瑞士专利CH714410B1 Capsule, system for preparing a drinkable beverage from such a capsule and use of such a capsule in

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专利摘要:
A capsule containing a substance for making a drinkable scent, the capsule comprising an aluminum capsule body (12) having a side wall and an outwardly extending flange (20) and a sealing element (28) on the outwardly extending flange (20) for Providing a fluid-sealing contact with an enclosing element (6) of a beverage preparation device. The beverage preparation device comprises an annular element (41) with a free contact end which can be provided with a plurality of radially extending open grooves (40). The sealing element (28) is formed integrally with the outwardly extending flange (20) and has a single annular protrusion (50) with a protrusion top defined by an inner protrusion foot (53) radially outside a flat inner flange portion (52), the extends between the capsule body sidewall (16) and the protrusion (50), and an outer protrusion foot (54) protrudes radially inward of a flat outer flange portion (56) extending between the protrusion (50) and the corrugated outer edge. The flat outer flange portion (56) and the flat inner flange portion (52) are aligned, and a radially outer wall (50B) of the protrusion (50) is oriented across the flat outer flange portion (56).
公开号:CH714410B1
申请号:CH00640/19
申请日:2017-10-06
公开日:2020-08-14
发明作者:Kamerbeek Ralf；Hendrik Groothornte Arend；Dijkstra Hielke；Pieter Van Gaasbeek Erik
申请人:Koninklijke Douwe Egberts Bv；
IPC主号:

专利说明:

The invention relates to a capsule according to the preamble of claim 1
The invention also relates to a system for preparing a drinkable beverage from a capsule using a fluid supplied under pressure into the capsule, comprising:<tb> <SEP> a beverage preparation device comprising an enclosing element for receiving the capsule, wherein the enclosing element comprises a liquid injection means for supplying pressurized fluid into the capsule, the beverage preparation device further comprising a closing element such as an extraction plate for closing the enclosing A member of the beverage maker, the enclosing member of the beverage maker further comprising an annular member having a central member axis of the annular member and a free contact end, the free contact end of the annular member being provided with a plurality of radially extending open grooves;<tb> <SEP> a capsule containing a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by supplying a pressurized fluid into the capsule, the capsule comprising an aluminum capsule body with a central capsule body axis, the Aluminum capsule body with a capsule body bottom, a side wall and an outwardly extending flange which comprises a corrugated outer edge, the outwardly extending flange extending transversely to the central capsule body axis, the capsule further comprising an aluminum cover which is attached to the outwardly extending flange, the cover hermetically sealing the capsule, the capsule further comprising a sealing element disposed on the outwardly extending flange for providing fluid sealing contact with an enclosing element of a beverage preparation device when the capsule i is positioned in the enclosing element of the beverage preparation device and the enclosing element is closed by means of a closing element of the beverage preparation device.
The invention further relates to the use of a capsule in a beverage preparation device comprising an enclosing element for receiving the capsule, the enclosing element comprising a liquid injection means for supplying pressurized fluid into the capsule, the beverage preparation device further comprising a Closing element such as an extraction plate for closing the enclosing element of the beverage preparation device comprises, wherein the enclosing element of the beverage preparation device further comprises an annular element with a central element axis of the annular element and a free contact end, the free contact end of the annular element having a plurality of radially extending open ones Is provided with grooves; wherein the capsule contains a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by means of the fluid that is supplied to the capsule by the liquid injection means of the beverage preparation device under pressure, the capsule comprising an aluminum capsule body with a central capsule body axis, the aluminum capsule body is provided with a capsule body bottom, a side wall and an outwardly extending flange which comprises a corrugated outer edge, the outwardly extending flange extending transversely to the central capsule body axis, the capsule further comprising an aluminum cover which is attached to the outwardly extending flange, the cover hermetically sealing the capsule, the capsule further including a sealing member on the outwardly extending flange for providing fluid sealing contact with an enclosing member of a beverage Comprises preparation device when the capsule is positioned in the enclosing element of the beverage preparation device and the enclosing element is closed by means of a closing element of the beverage preparation device.
Such a capsule, such a system and such a use are known from EP-B-1,700,548. In the known system the capsule is provided with a sealing element in the form of a step, i. H. a sudden increase in the diameter of the side wall of the capsule, and the enclosing element of this known system has a sealing surface which acts on the sealing element to cause a deflection of the sealing element, the sealing surface being inclined so that it is when the sealing element is deflected is an inward and downward deformation of the step. In addition, in the known system, the enclosing element comprises a capsule holder and a manually operated or automatic mechanism for relative displacement of the enclosing element and the capsule holder. The manually operated or an automatic mechanism exerts a force on the sealing element of the capsule when the enclosing element closes on the capsule holder. This force is intended to ensure the fluid-tight seal between the enclosing element and the capsule. Since the manually operated or an automatic mechanism is arranged to be moved relative to the ground, the sealing ability of the system may depend on the pressure of the fluid injected by the liquid injection means. If the pressure of the fluid increases, the force between the sealing element of the capsule and the free end of the enclosing element also increases, and thus the force between the sealing element of the capsule and the free end of the enclosing element also increases. Such a system is described below. The sealing element of the capsule must be arranged so that when the maximum fluid pressure is reached in the enclosing element, the sealing element should still provide a fluid sealing contact between the enclosing element and the capsule. However, the sealing element must also be arranged so that prior to brewing or at the start of brewing when the pressure of the fluid in the enclosing element outside the capsule is relatively low, the sealing element also provides fluid sealing contact between the enclosing element and the capsule. If there were no fluid sealing contact between the capsule and the enclosing element at the start of brewing, leakage would occur. However, if a leak does occur, there is a real chance that the pressure in the containment element and outside the capsule will not rise enough to increase the force on the sealing element by the free end of the enclosing element when the enclosing element is actuated by the manually operated or an automatic mechanism is moved towards the capsule holder. Only when there is an adequate initial seal will the pressure in the enclosing element increase, thereby also increasing the force of the free end of the enclosing element on the sealing element of the capsule to ensure adequate fluid sealing contact even with increased fluid pressure. This increased fluid pressure outside the capsule also ensures an increased fluid pressure inside the capsule, which is essential if the capsule is provided with a cover which, under the influence of fluid pressure in the capsule, tears open relief elements of the capsule holder (also called extraction plate or closing element ) the beverage preparation device is arranged.
From the above it can be seen that the sealing element is a structurally very critical element. It should be able to provide fluid sealing contact between the enclosing element and the capsule at a relatively low fluid pressure when only a relatively small force is exerted on the sealing element by the free end of the enclosing element, but it should also provide fluid sealing contact at a much higher fluid pressure in the provide enclosing element outside of the capsule when a higher force is exerted on the sealing element of the capsule by means of the free end of the enclosing element. In particular if the free contact end of the enclosing element is provided with radially extending open grooves, which serve as an air inlet channel as soon as the force between the enclosing element and the capsule holder is released, so that it is easier for a user to remove the capsule, the sealing element must also be able to "close" the radially extending open grooves in order to ensure an effective seal.
The object of the invention is to provide a relatively simple to manufacture alternative sealing element which is environmentally friendly when the capsule is disposed of after use and / or which provides adequate sealing both at a relatively low fluid pressure when only a relatively low force is applied the sealing element is exerted by the free end of the enclosing element (sometimes also called the initial seal), as well as at a much higher fluid pressure when a greater force is exerted on the sealing element of the capsule by means of the free end of the enclosing element (e.g. during brewing), even in the case of an enclosing element whose free contact end is provided with radially extending open grooves.
It is also an object of the invention to provide an alternative system for producing a drinkable beverage from a capsule and an alternative use of a capsule in a beverage preparation device.
According to the invention in a first aspect a capsule according to claim 1 is provided.
Since the sealing element is formed integrally with the outwardly extending flange and comprises an annular projection with a projection top which protrudes from an inner projection foot radially outside an inner sealing element section and an outer projection foot radially inside an outer flange section axially to the capsule body bottom, and the flat outer flange portion is axially spaced from the flat inner flange portion toward the bottom of the capsule body; or the flat outer flange portion and the flat inner flange portion are aligned and a radially outer wall of the projection is oriented transversely to the flat outer flange portion, the sealing element is relatively easy to manufacture and provides a satisfactory seal for the radially extending open grooved, free end of contact. A transition from the projection to the flat outer flange portion of the outwardly extending flange can have an inner radius of less than 0.15 mm or less than 0.12 mm, for example. In particular, the bottom of the annular trough, which is axially spaced from the bottom of the capsule body away from the outer projection foot, allows the flat outer flange portion to be pushed towards the closure element, causing the projection to be pushed outward by tilting and "rolling" the projection is so that the radial contact pressure exerted against the free contact end of the annular element increases, which contributes to achieving a satisfactory seal. Alternatively, the features that the flat outer flange portion and the flat inner flange portion are in alignment and that the radially outer wall of the protrusion is oriented transversely to the flat outer flange portion, also cause the protrusion by tilting and "rolling" the protrusion is pressed outwards, so that the radial contact pressure exerted against the free contact end of the annular element increases, which contributes to achieving a satisfactory seal. In practically all cases, in an embodiment of a capsule according to the invention, a satisfactory seal can be achieved in which the height of the sealing element portion which is first contacted by the free end of the enclosing element when the enclosing element is closed is at least about 0.1 mm , more preferably at least 0.2 mm and most preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm and most preferably at most 1.2 mm.
It is noted that in WO-A1-2014 / 184652 (with reference to Figure 13 to 18 thereof) an embodiment of a sealing element is disclosed in which a flat outer flange portion axially from the flat inner flange portion to the bottom of the Capsule body is spaced out. Furthermore, in contrast to the invention, the outer wall of the projection in the known embodiment comprises three different areas - an upper area which is perpendicular to the flat inner flange section before insertion, a central area which is at an angle β of 20 to 80 ° , preferably 60 °, is angled to the central capsule body axis, and a lower region which comprises the flat outer flange portion before the transition into the corrugated outer edge of the flange. This geometry of the outer wall of the protrusion adds to the rigidity of the distal end of the sidewall, but prevents the protrusion from being pushed outward to some extent.
It is further noted that in WO-A1-2014 / 184653 (with reference to Figures 4 and 5 thereof) an embodiment of a sealing element is disclosed in which a flat outer flange portion and a flat inner flange portion are on a line . However, this known capsule is made of a laminate material which comprises an expandable structural layer formed from aluminum or an aluminum alloy and another elastic layer formed from a polymer. During compression (i.e., during closure of the enclosing element), the polymer layer assists in conforming the sealing element to the shape of the annular element of the enclosing element. Furthermore, in contrast to the invention, the projection of the capsule according to this known embodiment has a generally triangular shape, so that the outer wall of the projection encloses an obtuse angle with the flat outer flange portion. Due to this known geometry during the closing of the enclosing element, the projection is driven downwards so that the projection is not pressed outwards.
In one embodiment of a capsule according to the invention, the projection is configured such that its projection top exerts an outwardly directed radial force on the free contact end of the annular element when the capsule is positioned in the enclosing element of the beverage preparation device and the enclosing element is closed by the closing element of the beverage preparation device.
In this application, the presence of a fluid sealing contact means that 0 to 6%, preferably 0 to 4%, more preferably 0 to 2.5% of the total fluid supplied to the enclosing element for preparing the beverage by leakage between the free contact end and the Sealing element of the capsule can escape.
In the event that the flat outer flange portion is axially spaced from the flat inner flange portion to the bottom of the capsule body, it is preferred that the sealing element is deformable such that when in use the closing of the enclosing element causes the axial distance between the flat outer flange portion and the flat inner flange portion is reduced, in particular the sealing element is deformable such that when in use the closing of the enclosing element causes the axial distance between the flat outer flange portion and the flat inner flange portion is eliminated. Preferably, the axial distance between the flat inner flange section and the flat outer section is between 0.5 and 0.7 mm or is 0.6 mm or is half the largest dimension of the corrugated outer edge.
A radially inner wall of the projection is preferably oriented at an angle between 93 ° and 110 °, preferably between 95 ° and 98 °, and most preferably at an angle of 97 °, to the flat inner flange portion. When the flat outer flange portion is axially spaced from the flat inner flange portion towards the bottom of the capsule body, it is preferred that a radially outer wall of the projection is at an angle between 93 ° and 110 °, preferably between 95 ° and 98 ° and most preferably at an angle of 97 ° to the flat outer flange portion. Thus, upper sections of the projection are effectively supported against collapsing and inward “rolling” of the projection, similar to a deep-drawing process. For the same purpose, it is also advantageous if at the outer projection foot a transition from the projection to a radially outwardly projecting section of the outwardly extending flange has an inner radius of less than 0.15 mm and preferably less than 0.12 mm. The pressure movement causes the projection to yield plastically, which increases the contact force exerted on the free end of the enclosing element.
The invention is particularly advantageous when, in one embodiment of a capsule, the capsule contains an extractable product as a substance for preparing a drinkable drink, the extractable product preferably 5 to 20 grams, preferably 5 to 10 grams, more preferably 5 to 7 grams of an extractable product such as roast and ground coffee.
In an embodiment of a capsule according to the invention, which is particularly easy to manufacture, the outer diameter of the outwardly extending flange of the capsule is greater than the diameter of the capsule base. The outside diameter of the outwardly extending flange is preferably approximately 37.1 mm and the diameter of the capsule base is approximately 23.3 mm.
The invention is particularly advantageous when, in one embodiment of a capsule, the wall thickness of the aluminum capsule body is between 20 and 200 micrometers, preferably between 80 and 110 micrometers, most preferably between 90 and 100 micrometers, so that it is easily deformed, when the capsule is positioned in the enclosing element of the beverage preparation device and the enclosing element is closed by means of a closing element of the beverage preparation device.
The invention is particularly advantageous when, in one embodiment of a capsule, the wall thickness of the aluminum cover is 15 to 65 micrometers, preferably 30 to 45 micrometers and more preferably 39 micrometers.
In one embodiment of a capsule according to the invention, the wall thickness of the aluminum cover is less than the wall thickness of the aluminum capsule body. The cover can be attached to the flat inner flange portion and / or to the flat outer flange portion. In a further embodiment of a capsule according to the invention, the aluminum cover is arranged on a closing element of the beverage preparation device, such as an extraction plate of the beverage preparation device, under the influence of fluid pressure in the capsule for tearing open.
In order to ensure that the corrugated outer edge does not affect the operation of a large number of commercial and future beverage preparation devices, the corrugated outer edge of the outwardly extending flange has a largest dimension of about 1.2 millimeters.
The invention is particularly advantageous for capsules whose inner diameter of the free end of the side wall of the aluminum capsule body is about 29.5 mm. The distance between the free end of the side wall of the aluminum capsule body and an outermost edge of the outwardly extending flange can be about 3.8 millimeters. The preferred height of the aluminum capsule body is about 28.4 mm.
In one embodiment of a capsule according to the invention, which is easier for a user to take out of a beverage preparation device after use, the aluminum capsule body is truncated, the side wall of the aluminum capsule body preferably forming an angle with a line transverse to the central capsule body axis of about 97.5 ° includes.
In an advantageous embodiment of a capsule according to the invention, the bottom of the aluminum capsule body has a largest inner diameter of approximately 23.3 mm. It is preferred that the bottom of the aluminum capsule body be truncated, preferably with a bottom height of about 4.0 mm, and that the bottom further have a generally flat central portion opposite the cover with a diameter of about 8.3 mm.
In a preferred embodiment of a capsule according to the invention, the capsule comprises an inner surface, an inner coating being present on the inner surface of at least the side wall of the capsule. In particular when producing the capsule by deep drawing, the inner coating facilitates the deep drawing process. When fastening the aluminum cover of the capsule by means of a sealing lacquer on the outwardly extending flange, it is particularly advantageous if the inner coating consists of the same material as the sealing lacquer. Depending on the inner coating used, it is preferred that the sealing element is free of an inner coating in order to prevent the inner coating from peeling off from the sealing element.
In a further embodiment of a capsule according to the invention, the capsule comprises an outer surface, a colored lacquer being present on the outer surface of the capsule. In order to facilitate deep drawing, it is preferred to apply an outer coating to an outer surface of the colored lacquer. Depending on the color varnish and outer coating used, it is preferred that the sealing element is free from a colored varnish (and thus the outer coating) in order to prevent the colored varnish / outer coating from crumbling off the sealing element.
To achieve a reliable seal, it is also advantageous if the projection has an outer upper end which extends around the capsule axis with a diameter of 31.9 to 32.4 mm. Thus, when used in commercially available coffee preparation devices such as Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza, an outer edge area of the free end of the enclosing element is pressed firmly against the projection.
According to the invention in a second aspect a system for preparing a drinkable beverage according to claim 24 is provided.
The flat inner flange portion preferably has a radial width which is substantially greater than the radial thickness of the free contact end portion of the annular element, so that a gap remains between the free contact end portion of the annular element and the side wall of the capsule body. This ensures that the full axial force is available to create a seal between the enclosing element and the sealing element.
The projection top can form a portion of the projection, for example a half, a third or a quarter of the projection, which is axially farthest from the feet of the projection.
With regard to the preferred embodiments of the system as mentioned in the dependent claims, which refer to the same features as the features of the dependent claims of the capsule, reference is made to the above.
The invention is particularly suitable for use in a system according to the invention in which the maximum fluid pressure in the enclosing element of the beverage preparation device in use is in the range of 6 to 20 bar, preferably between 12 and 18 bar. Even at such high pressures, a satisfactory seal between the capsule and the beverage preparation device can be achieved.
Preferably, the system is arranged such that, when in use during brewing, a free end of the enclosing member of the beverage maker applies a force F2 to the sealing member of the capsule to establish fluid sealing contact between the outwardly extending flange of the capsule and the enclosing member the beverage preparation device, where F2 is in the range from 500 to 1500 N, preferably in the range from 750 to 1250 N, when the fluid pressure P2 in the enclosing element of the beverage preparation device outside the capsule is in the range from 6 to 20 bar, preferably between 12 and 18 bar lies. In particular, the system is arranged such that when in use before or at the start of brewing, a free end of the enclosing element of the beverage preparation device exerts a force F1 on the sealing element of the capsule in order to establish fluid sealing contact between the outwardly extending flange of the capsule and the enclosing element of the beverage preparation device, where F1 is in the range from 30 to 150 N, preferably in the range from 40 to 150 N, more preferably from 50 to 100 N, when the fluid pressure P1 in the enclosing element of the beverage preparation device outside the capsule is in the range of 0.1 to 4 bar, preferably between 0.1 and 1 bar.
In one embodiment of a system according to the invention, wherein the plurality of radially extending open grooves in the tangential direction of the free contact end of the annular element of the beverage preparation device are equally spaced from one another, so that it is easier for a user to remove the capsule while still one adequate sealing between capsule and beverage preparation device can be ensured.
In an advantageous embodiment of a system according to the invention, the longest tangential width of each groove (from top to top, ie equal to the groove-to-groove distance) is 0.9 to 1.1 mm, preferably 0.95 to 1.05 mm, more preferably 0.98 to 1.02 mm, the maximum height of each groove in the axial direction of the enclosing element of the beverage preparation device being 0.01 to 0.09 mm, preferably 0.03 to 0.07 mm, more is preferably 0.045 to 0.055 mm, most preferably 0.05 mm, and the number of grooves is 90 to 110, preferably 96. The radial width of the annular end surface at the location of the grooves can e.g. B. 0.05 to 0.9 mm, preferably 0.2 to 0.7 mm and more preferably 0.3 to 0.55 mm. The invention is particularly suitable when it is applied to an embodiment of a system according to the invention in which during use, when the closing element of the beverage preparation device closes the enclosing element of the beverage preparation device, at least the free contact end of the enclosing element of the beverage preparation device relative to the closing element the beverage preparation device can move under the action of the fluid pressure in the enclosing element of the beverage preparation device in the direction of the closing element of the beverage preparation device in order to exert the maximum force between the flange of the capsule and the free end of the enclosing element of the beverage preparation device. The enclosing element may comprise a first part and a second part, the second part comprising the free contact end of the enclosing element, the second part being movable between a first and a second position relative to the first part. The second part can move under the influence of fluid pressure in the enclosing element from the first position to the second position in the direction of the closing element. The force F1 described above can be achieved when the second part is in the first position with a fluid pressure P1. The force F2 described above can be achieved when the second part is moved to the second position under the influence of the fluid pressure P2 in the enclosing element.
According to the invention in a third aspect a use of a capsule according to the invention according to claim 37 is provided.
[0037] Particular embodiments of the invention are specified in the dependent claims. Regarding the advantage of the inventive use and the preferred embodiments of the use as mentioned in the dependent claims, which refer to the same features as the features of the dependent claims of the capsule or the subclaims of the system, reference is made to the above.
Further features, details and effects of the invention will now be explained in more detail using non-limiting examples with reference to the drawing, wherein<tb> Fig. Figure 1 <SEP> shows a schematic representation of an embodiment of a system according to the invention;<tb> Fig. Fig. 2 <SEP> shows in a perspective view an embodiment of a beverage preparation device of a system according to the invention, the free contact end of the enclosing element of the beverage preparation device being shown with the plurality of radially extending open grooves;<tb> Fig. 3A <SEP> shows in schematic cross section an embodiment of a capsule according to the invention before use;<tb> Fig. 3B <SEP> schematically shows an enlarged section from the capsule of FIG. 3A with the outwardly extending flange and the sealing element;<tb> Fig. 3C <SEP> schematically shows an enlarged section of the outwardly extending flange of the capsule in FIGS. 3A and 3B after use;<tb> Fig. 4 <SEP> is an enlarged cross-sectional view of one embodiment of a sealing element on the outwardly extending flange of a capsule according to the invention in which the flat outer flange portion is axially spaced from the flat inner flange portion towards the bottom of the capsule body and with a transition from the projection to the flat outer flange portion of the outwardly extending flange has an inner radius of less than 0.15 mm, preferably less than 0.12 mm, in combination with an end portion of the enclosing element and a closing element of a beverage preparation device; and<tb> Fig. 5 <SEP> is an enlarged cross-sectional view of an embodiment of a sealing element on the outwardly extending flange of a capsule according to the invention, in which the flat outer flange portion and the flat inner flange portion are in line and with a radially outer wall of the projection transverse to the is aligned flat outer flange portion, in combination with an end portion of the enclosing member and a closure member of a beverage maker.
In the figures and the following description, the same reference numbers relate to the same features.
Fig. 1 shows in cross section a schematic representation of an embodiment of a system 1 for producing a drinkable beverage from a capsule with a fluid fed into the capsule under pressure. The system 1 comprises a capsule 2 and a beverage preparation device 4. The device 4 comprises the enclosing element 6 for holding the capsule 2. The device 4 further comprises a closing element, for example an extraction plate 8, for supporting the capsule 2.
In Fig. 1, a distance between the capsule 2, the enclosing element 6 and the extraction plate 8 is drawn for clarity. It will be understood that in use the capsule 2 can be in contact with the enclosing element 6 and the extraction plate element 8. The enclosing element 6 generally has a shape that is complementary to the capsule 2. The beverage preparation device 4 further comprises a liquid injection means 10 for supplying an amount of a fluid such as water under a pressure in the range from 6 to 20 bar, preferably between 12 and 18 bar, to the exchangeable capsule 2.
In the example shown in FIG. 1, the exchangeable capsule 2 consists of an aluminum capsule body 12 with a central capsule body axis 12A and an aluminum cover 14. In the present context, the term “aluminum” is also understood to mean an aluminum alloy. In this example, the aluminum capsule body 12 includes a side wall 16, a bottom 18 that closes the side wall 16 at a first end, and an outwardly extending flange 20 that extends outwardly from the peripheral wall 16 at a second end opposite the bottom 18 . The side wall 16, the bottom 18 and the cover 14 enclose an interior 22 comprising a substance for the production of a drinkable beverage by extracting and / or dissolving the substance. Preferably, the substance is an extractable product for making a drinkable beverage, the extractable product preferably being 5 to 20 grams, preferably 5 to 10 grams, more preferably 5 to 7 grams of roast and ground coffee for making one individual drink. The capsule is first sealed; H. Hermetically sealed before use.
The system 1 of FIG. 1 comprises a bottom piercing device 24 for piercing the bottom 18 of the capsule 2 in order to form at least one inlet opening 25 in the bottom 18 so that the fluid is supplied to the extractable product through the inlet opening 25.
The system 1 of Fig. 1 further comprises the cover piercing device 26, designed here as projections of the closing element 8, for piercing the cover 14 of the capsule 2. The cover piercing device 26 can be arranged so that it tears open the cover 14 as soon as a (Fluid) pressure in the interior 22 exceeds a threshold pressure and the cover 14 presses against the cover piercing device 26 with sufficient force. The aluminum cover 14 is arranged in such a way that it tears open under the influence of fluid pressure in the capsule on the closing element 8 of the beverage preparation device.
The capsule 2 further includes a sealing member 28 formed integrally with the outwardly extending flange, as shown as a general box in Figures 1, 3A and 3B, but described in more detail with reference to Figure 4, which Sealing element 28 is arranged to provide a fluid sealing contact with the enclosing element 6 when the capsule 2 is positioned in the enclosing element 6 and the enclosing element 6 is closed by means of the extraction plate 8 such that the outwardly extending flange 20 of the capsule 2 and at least a portion of the sealing member 28 sealingly engaged between the enclosing member 6 and the extraction plate 8. This means that a fluid sealing contact is established between the sealing element 28 and the free contact end.
As shown in Figure 2, the enclosing element 6 of the beverage preparation device consists of an annular element 41 with a central element axis 41A of the annular element and a free contact end 30. The free contact end 30 of the annular element 41 is with a plurality of radially extending open grooves 40 provided. The plurality of radially extending open grooves 40 are evenly spaced from one another in the tangential direction of the free contact end 30 of the annular element 41. The longest tangential width of each groove 40 is 0.9 to 1.1 mm, preferably 0.95 to 1.05 mm, more preferably 0.98 to 1.02 mm, with a maximum height of each groove 40 in the axial direction of the enclosing Element 6 is 0.01 to 0.09 mm, preferably 0.03 to 0.07 mm, more preferably 0.045 to 0.055 mm and most preferably 0.05 mm. The number of grooves 40 is in the range from 90 to 110, preferably 96. As a rule, the radial width of the free end at the position of the grooves is 0.05 to 0.9 mm, more precisely 0.2 to 0.7 mm , more precisely 0.3 to 0.55 mm.
One embodiment of a capsule according to the invention is shown in more detail in FIGS. 3A and 3B. In the embodiment shown, the outer diameter ODF of the outwardly extending flange 20 is greater than the diameter DB of the bottom 18 of the capsule 2. In the illustrated embodiment, the outer diameter ODF of the outwardly extending flange 20 is approximately 37.1 mm and the diameter DB of the bottom 18 approximately 23.3 mm. The wall thickness of the aluminum capsule body 12 is such that it deforms slightly when the capsule is positioned in the enclosing element of the beverage preparation device and the enclosing element is closed by means of a closing element of the beverage preparation device, preferably the wall thickness of the aluminum capsule body is 100 micrometers, but in other embodiments the wall thickness can be 20 to 200 micrometers.
In the embodiment shown, the wall thickness of the aluminum cover 14 is 39 micrometers. The wall thickness of the aluminum cover 14 is preferably less than the wall thickness of the aluminum capsule body 12.
The side wall 16 of the aluminum capsule body 12 has a free end 42 opposite the bottom 18. The inner diameter IDF of the free end 42 of the side wall 16 of the aluminum capsule body 12 is approximately 29.5 mm. The outwardly extending flange 20 extends from this free end 42 in a direction transverse to the central capsule body axis 12A. The outwardly extending flange 20 includes a corrugated outer edge 43 which enables a seal between the capsule and the enclosing element. In the embodiment shown, the corrugated outer edge 43 of the outwardly extending flange 20 has a largest dimension of about 1.2 millimeters and extends axially on both sides of a flat outer flange portion 56. The axial distance between the flat inner flange portion 52 and the flat outer flange portion 56 is preferably approximately half the largest dimension of the corrugated outer edge 43. The distance DIF between the free end 42 of the side wall 16 of the aluminum capsule body 12 and an inner edge 43A of the corrugated outer edge 43 is about 2.7 mm, while the distance DOF between the free end 42 of the side wall 16 of the aluminum capsule body 12 and an outermost edge 43B of the outwardly extending flange 20 is about 3.8 millimeters. The radius around the central capsule body axis of the inner edge 43A of the corrugated outer edge 43 is preferably at least 32 mm.
As shown in Figures 3A and 3B, the sealing element 28 is located between the free end 42 of the side wall 16 of the aluminum capsule body 12 and the inner edge 43A of the corrugated outer edge 43 of the outwardly extending flange. The sealing element 28 is shown as a general box but is described in more detail below. Regardless of the embodiment of the sealing element 28, the height of the sealing element portion which is first contacted by the free end of the enclosing element when the enclosing element is closed is at least about 0.1 mm, more preferably at least 0.2 mm and most preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm, and most preferably at most 1.2 mm to provide a proper seal.
As can be seen from FIG. 3A, the aluminum capsule body 12 is truncated. In the embodiment shown, the side wall 16 of the aluminum capsule body 12 encloses an angle A with a line transverse to the central capsule body axis 12A of approximately 97.5 °. The bottom 18 of the aluminum capsule body 12 has a largest inner diameter DB of approximately 23.3 mm. The bottom 18 of the aluminum capsule body 12 is also truncated and, in the embodiment shown, has a bottom height BH of approximately 4.0 mm. The bottom 18 also has a generally flat central portion 18A opposite the cover 14, the central portion 18A having a diameter DEE of approximately 8.3 mm and wherein the inlet opening (s) 25 may be provided in the central portion 18A. The inlets can also be made in the truncated section between the central section 18A and the side wall 16. The total height TH of the aluminum capsule body 12 of the capsule is approximately 28.4 mm.
The system 1 shown in Fig. 1 is, as described below, operated for preparing a cup of a drinkable beverage, coffee in the present example, the substance being roasted and ground coffee.
The capsule 2 is placed in the enclosing element 6. The extraction plate 8 is brought into contact with the capsule 2. The bottom piercing device 24 pierces the bottom 18 of the capsule 2 to create the inlet openings 25. The fluid, here hot water under pressure, is supplied to the extractable product in the interior 22 through the inlet openings 25. The water wets the coffee powder and extracts the desired substances in order to prepare the coffee beverage.
While the water is passed under pressure into the interior 22, the pressure inside the capsule 2 rises. As a result of the rise in pressure, the cover 14 is deformed and is pressed against the lid piercing device 26 of the extraction plate. As soon as the pressure has reached a certain level, the tear strength of the cover 14 is exceeded and the cover 14 tears open against the lid piercing device 26 and forms outlet openings. The prepared coffee runs out of the capsule 2 through the outlet openings and outlets 32 (see FIG. 1) of the extraction plate 8 and can be placed in a container such as a cup (not shown).
The system 1 is arranged so that prior to or at the beginning of the brewing the free end 30 of the enclosing element 6 exerts a force F1 on the sealing element 28 of the capsule 2 to establish a fluid sealing contact between the outwardly extending flange 20 the capsule 2 and the enclosing element 6 of the beverage preparation device to provide, where F1 is in the range of 30 to 150 N, preferably from 40 to 150 N, more preferably from 50 to 100 N, when the fluid pressure P1 in the enclosing element of the beverage preparation device is outside the range Capsule in the range from 0.1 to 4 bar, preferably 0.1 to 1 bar. During brewing, the free end 30 of the enclosing element 6 exerts a force F2 on the sealing element 28 of the capsule 2 in order to establish fluid sealing contact between the outwardly extending flange 20 of the capsule 2 and the enclosing element 6, the force F2 im Range from 500 to 1500 N, preferably in the range from 750 to 1250 N, when the fluid pressure P2 in the enclosing element 6 of the beverage preparation device outside the capsule 2 is in the range from 6 to 20 bar, preferably between 12 and 18 bar. In the embodiment shown, the free contact end of the enclosing element 6 can move relative to the extraction plate 8 under the action of the fluid pressure in the enclosing element 6 to the extraction plate 8 in order to achieve the maximum force F2 between the outwardly extending flange 20 and the free end 30 of the surrounding element 6 exercise. This movement can occur during use, i.e. H. take place in particular at the start of brewing and during brewing. The enclosing element 6 has a first part 6A and a second part 6B, the second part comprising the free contact end 30. The second part 6B can move relative to the first part 6A between a first and a second position. The second part 6B can move from the first position to the second position in the direction of the closing element 8 under the influence of fluid pressure in the enclosing element 6. The force F1 described above can be achieved when the second part 6B is in the first position with a fluid pressure P1. The force F2 described above can be achieved when the second part 6B is moved to the second position under the influence of the fluid pressure P2 in the enclosing element 6.
The sealing element 28 of the capsule according to the invention undergoes a plastic deformation by the force exerted and fits tightly to the grooves 40 of the free contact end 30, thus ensuring a fluid sealing contact between the enclosing element 6 and the capsule 3 at relatively little Fluid pressure at the start of brewing, but also for a fluid sealing contact at the much higher fluid pressure in the enclosing element outside the capsule during brewing. This close adaptation to the grooves 40 of the enclosing element is shown in FIG. 3C, which shows the capsule 2 of the invention after use and which clearly shows that the outwardly extending flange 20 has deformations 40 'which correspond to the grooves 40 of the enclosing element Elements correspond.
Referring now to FIG. 4, one embodiment of a sealing member 28 on the outwardly extending flange 20 of the capsule 2 in which the flat outer flange portion 56 is axially spaced from the flat inner flange portion 52 towards the bottom of the capsule body will be described described in more detail. The axial distance between the flat inner flange section 52 and the flat outer flange section 56 is between 0.5 and 0.7 mm, preferably the axial distance is 0.6 mm.
FIG. 4 shows a first embodiment of a sealing element 28 which forms an additional bearing on the outwardly extending flange 20 of the capsule body 12. The sealing element 28 and the rest of the capsule body 12 are made from the same plate material. The sealing element 28 has a single projection 50 which projects axially from the inner and outer foot sections 53, 54 in the axial direction 55 to the bottom of the capsule body 12. A trough with a flat inner flange portion 52 is disposed inwardly adjacent to the protrusion 50. The flat inner flange portion 52 of the trough is axially spaced from the outer projection foot 54 in a direction away from the bottom of the capsule body 12 and axially spaced from a flat outer flange portion 56 of the outwardly extending flange 20 between the sealing element 28 and the corrugated outer edge 43 positioned.
Furthermore, the projection 50 and the flat inner flange portion 52 of the trough are arranged such that the free contact end 60 of the annular element 41 is contacted by the flat inner flange portion 52 of the trough when the capsule is positioned in the enclosing element of the beverage preparation device and that enclosing element is closed by the closing element 8.
The distance between the projection 50 and a side wall 16 of the capsule body 12 is preferably 0.9 to 1.25 mm, whereby the inner web or the free contact end 60 of the enclosing element 6 of widely used and commercially available beverage preparation devices (such as Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza) can be reliably pressed against the projection 50, the side wall 16 being in the immediate vicinity, but being somewhat spaced from the side wall 16.
The projection 50 has a projection top which forms a portion of the projection, for example a half, a third or a quarter of the projection that is axially furthest from the feet 53, 54 of the projection 50. The projection 50 is configured such that its projection upper side exerts a radial force on the free contact end 30 of the annular element 41 when the capsule is positioned in the enclosing element 6 of the beverage preparation device and the enclosing element is closed with the aid of a closing element 8 of the beverage preparation device. When the enclosing element 6 and / or the closing element 8 with the sealing element 28 of the capsule in between is moved in the direction of the other, the free contact end 30 of the enclosing element 6 contacts the projections 50. This causes the capsule to be relative to the enclosing element 6 is centered along with the contact between the free contact end 60 and the protrusion. A large contact force is exerted when the protrusion 50 is deformed. Circumferential stress in the projection 50 causes opposing forces to be distributed evenly over the circumference, so that a uniformly distributed sealing pressure is achieved.
As can also be seen from FIG. 4, the free contact end 60 of the enclosing member 6 has an inner peripheral surface portion 71 and an outer peripheral surface portion 70 which contact the projection 50. The radially extending open grooves 40 are deeper in the inner circumferential surface section 71 than in the outer circumferential surface section 70, or the grooves may be absent in the outer circumferential surface section 70. Thus, the projection 50 is pressed firmly and precisely against the relatively smooth outer circumferential surface section 70 of the free contact end 60.
As can be seen from Fig. 4, since the flat outer flange portion 56 is axially spaced from the inner projection foot 53 in an axial direction 55 toward the bottom of the capsule body 12, the flat outer flange portion 56 relative to the outer side foot 53 of the projection in the direction of the closing element 8, causing the protrusion 50 to be pushed outward by inclining and deforming the protrusion 50, which increases the radial contact pressure exerted against the free contact end 30 of the annular element 41. At the same time, the flat outer flange section 56 is lowered and can contact the closing element 8.
In the first stage of contact between the annular member 6 and the sealing member 28, an initial seal between a generally inwardly directed surface portion of the protrusion 50 and the outer peripheral surface portion 70 of the free end 60 of the annular member 6 is created.
The radial position of this inwardly directed surface section of the projection 50 and the local radius of curvature of the projection 50 are arranged in such a way that it is ensured that the surfaces in contact with one another are aligned almost vertically. This allows a very strong wedge effect to be achieved, so that a very low vertical closing force leads to very high horizontal contact pressures. These large horizontal forces are exerted with little deformation of the outer protrusion 50 while maintaining a high degree of flexibility to accommodate tolerances and misplacement of the capsule.
In the second stage, the closing and further compression of the brewing chamber onto the sealing ring is supported by the build-up of hydraulic pressure. When the compressive force builds up, the flat outer flange portion 56 is pressed downward by the mechanical and hydraulic loads until the flat outer flange portion 56 contacts the closing element 8. Movement of the sealing element 28 and deformation of the sealing element shape lead to the fact that a contact pressure is additionally transmitted to the primary sealing surface. Because much of the deformation occurs plastically, the contact area effectively conforms to the sealing area of the enclosing element and allows misalignments and manufacturing tolerances to be somewhat compensated for. In the third stage, a further increase in the axial (here vertical) force causes a slight further deformation of the sealing element 28.
In the present example, the cover 14 is attached to the flat inner flange portion 52. This cover 14 (preferably made of aluminum) also contributes to the sealing properties of the sealing element 28, since it attempts to force the projection 50 axially inward against radially outwardly directed forces exerted on it by the free end 30 of the enclosing element 6 hold.
In the embodiment shown, the radially inner wall 50A of the protrusion 50 is oriented at an angle between 93 ° to 110 °, preferably between 95 ° to 98 ° and most preferably at an angle of 97 ° with respect to the flat inner flange portion 52 and a radially outer wall 50B of protrusion 50 is also oriented at an angle between 93 ° to 110 °, preferably between 95 ° to 98 °, and most preferably at an angle of 97 °, with respect to the flat outer flange portion 56. The transition from the projection 50 to the flat inner flange portion 52 of the outwardly extending flange 20 has an inner radius of less than 0.15 mm, preferably less than 0.12 mm.
It should be noted that in an embodiment not shown, the radially inner wall 50A of the projection 50 is aligned essentially parallel to the capsule body axis, so that upper portions of the projection 50 are effectively supported against collapsing and inwardly "rolling" of the projection 50, similar to a deep drawing process. For the same purpose, the transition from the projection 50 to the radially outwardly protruding portion 56 of the outwardly extending flange 20 has the small inner radius, e.g. B. of less than 0.15 mm and preferably less than 0.12 mm.
Since the outwardly extending flange 20 has no more than a single annular projection, the capsule body 12 can be manufactured efficiently, particularly when the capsule is deep drawn from plate material.
In particular in connection with the final mutual displacement of the annular element 6 and the sealing element 28, there is a particular problem that some enclosing elements have one or more bridges between outer and inner webs 80, 81 of the annular element 41 in practice. Such bridges form an interruption in an annular head space 62 into which the projection 50 is wedged during the third stage. Leakage, particularly at the junctions where a circumferential bridge begins and ends, is reduced because protrusion 50 is shaped to roll radially outwardly and give way, causing excess sealing element material locally from the seal between protrusion 50 and the annular Element 6 is pushed away, which reduces interference with this seal and allows a substantially continuous seal along a line that runs under the bridge.
Now, another embodiment of a sealing element 28 on the outwardly extending flange 20 of the capsule 2 according to the invention, in which the flat outer flange portion 56 and the flat inner flange portion 52 are in line and wherein the radially outer wall 50B of protrusion 50 is oriented transverse to flat outer flange portion 56, will be described in greater detail with reference to FIG. The axial distance between the flat inner flange portion 52 and the flat outer flange portion 56 in this embodiment is thus zero.
FIG. 5 shows a second embodiment of a sealing element 28 which forms an additional bearing on the outwardly extending flange 20 of the capsule body 12. The sealing element 28 and the rest of the capsule body 12 are made from the same plate material. The sealing element 28 has a single projection 50 which projects axially from the inner and outer foot sections 53, 54 in the axial direction 55 to the bottom of the capsule body 12. A trough with a flat inner flange portion 52 is disposed inwardly adjacent to the protrusion 50. The flat inner flange portion 52 of the trough is positioned at the same level as the outer protrusion foot 54 and also at the same level as the flat outer flange portion 56 of the outwardly extending flange 20 between the sealing member 28 and the corrugated outer edge 43.
Furthermore, the protrusion 50 and the flat inner flange portion 52 of the trough are arranged such that the free contact end 60 of the annular element 41 is contacted by the flat inner flange portion 52 of the trough when the capsule is positioned in the enclosing element of the beverage preparation device and the enclosing element is closed by the closing element 8.
The distance between the projection 50 and a side wall 16 of the capsule body 12 is preferably 0.9 to 1.25 mm, whereby the inner web or the free contact end 60 of the enclosing element 6 of widely used and commercially available beverage preparation devices (such as Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza) can be reliably pressed against the projection 50, the side wall 16 being in the immediate vicinity, but being somewhat spaced from the side wall 16.
The projection 50 has a projection top which forms a portion of the projection, for example a half, a third or a quarter of the projection, which is axially furthest from the feet 53, 54 of the projection 50. The projection 50 is configured such that its projection upper side exerts a radial force on the free contact end 30 of the annular element 41 when the capsule is positioned in the enclosing element 6 of the beverage preparation device and the enclosing element is closed with the aid of the closing element 8 of the beverage preparation device.
When the enclosing element 6 and / or the closing element 8 with the sealing element 28 of the capsule in between is moved in the direction of the other, the free contact end 60 of the enclosing element 6 contacts the projections 50. This causes the capsule to be relative to the surrounding element 6 is centered, while the projection 50 exerts a large contact force when it is deformed. The relatively high counter pressure ensures a particularly reliable seal with high compressive strength. The load exerted is also counteracted by circumferential tension in the projection 50, which is evenly distributed over the circumference, so that a uniformly distributed sealing pressure is achieved.
As can be seen from FIG. 5, the free contact end 60 of the enclosing member 6 has an inner peripheral surface portion 71 and an outer peripheral surface portion 70 which contact the projection 50. The radially extending open grooves 40 are deeper in the inner circumferential surface section 71 than in the outer circumferential surface section 70, or the grooves may be absent in the outer circumferential surface section 70. The projection 50 is pressed firmly and precisely against the relatively smooth outer circumferential surface section 70 of the free contact end 60.
When the projection 50 is pressed outwards, the radial contact pressure which is thereby exerted against the free contact end 30 of the annular element 41 is increased.
In the first stage of contact between the annular member 6 and the sealing member 28, an initial seal is created between a generally inwardly facing surface portion of the protrusion 50 and the outer peripheral surface portion 70 of the free end 60 of the annular member 6. The radial position of this inwardly directed surface section of the projection 50 and the local radius of curvature of the projection 50 are arranged in such a way that it is ensured that the surfaces in contact with one another are aligned almost vertically. This enables a very strong wedge effect to be achieved, so that a very low vertical closing force leads to very high horizontal (radial) contact pressures. These large horizontal forces are exerted with little deformation of the outer protrusion 50 while maintaining a high degree of flexibility to accommodate tolerances and misplacement of the capsule.
In the second stage, the closing and further compression of the brewing chamber onto the sealing ring is supported by the build-up of hydraulic pressure. When the compressive force builds up, the inner wall 50A of the protrusion 50 is bent. This tilting and deformation of the sealing element shape lead to the fact that a contact pressure is additionally transmitted to the primary sealing surface. Since much of the deformation occurs plastically, the contact area effectively adapts to the sealing area so that misalignments and manufacturing tolerances can be somewhat compensated for.
In the last stage, a further increase in the axial (here vertical) force causes a slight further deformation of the sealing element 28, in particular the projection 50 is further compressed and the flat inner flange section is further deformed.
In the present example, the cover 14 extends to the flat outer flange portion 56 and is attached to both the flat inner flange portion 52 and the flat outer flange portion 56. In this way, the cover 14 (preferably made of aluminum) also contributes to the sealing properties of the sealing member 28, as it tries to keep the projection 50 in position against radially outward forces exerted by the free end 60 of the enclosing element 6 to keep it exercised. However, in a further embodiment, the cover 14 could only be attached to the flat outer flange portion 56. In another embodiment, cover 14 could only extend to and be attached to flat inner flange portion 52.
In the embodiment shown, the radially inner wall 50A of the protrusion 50 is at an angle between 93 ° and 110 °, preferably between 95 ° and 98 °, and most preferably at an angle of 97 °, to the flat inner flange portion 52 aligned.
It is noted that the radially inner wall 50A of the projection 50 can also be aligned essentially parallel to the capsule body axis in an embodiment not shown, so that upper sections of the projection 50 effectively prevent the projection 50 from collapsing and inwardly “rolling off” be supported, similar to a deep drawing process. For the same purpose, the transition from the projection 50 to the flat inner flange portion 52 and / or to the flat outer flange portion 56 of the outwardly extending flange 20 has an inner radius of less than 0.15 mm, preferably less than 0.12 mm .
Since the outwardly extending flange 20 has no more than a single annular projection, the capsule body 12 can be manufactured efficiently, particularly when the capsule is deep drawn from plate material.
In particular in connection with the final mutual displacement of the enclosing element 6 and the sealing element 28, there is a particular problem that some enclosing elements may have one or more bridges between outer and inner webs 80, 81 of the annular element 41 in practice . Such bridges represent an interruption of an annular head space 62 into which the projection 50 is wedged during the third stage. Leakage, in particular at the transitions where a bridge begins and ends in the circumferential direction, is reduced because the projection 50 is shaped in this way that it rolls and yields radially outwards, whereby excess sealing element material is locally pushed away from the seal between the protrusion 50 and the annular element 6, which reduces interference with this seal and allows a substantially continuous seal along a line that runs under the bridge runs.
In the foregoing specification the invention is described with reference to specific examples of embodiments of the invention. It is apparent, however, that various modifications and changes can be made therein without departing from the scope of the invention as set out in the appended claims.

权利要求:
Claims (43)
[1]
1. A capsule (2) comprising a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by supplying a pressurized liquid into the capsule (2), the capsule (2) having an aluminum capsule body (12) with a central capsule body axis (12A), the aluminum capsule body (12) having a capsule body base (18), a side wall (16) and an outwardly extending flange (20) which comprises a corrugated outer edge (43), the outwardly extending flange (20) extending transversely to the central capsule body axis, the capsule (2) further comprising an aluminum cover (14) attached to the outwardly extending flange (20), the cover (14) the The capsule (2) hermetically seals, the capsule (2) further including a sealing element (28) on the outwardly extending flange (20) for providing fluid sealing contact with an enclosing element element (6) of a beverage preparation device (4) when the capsule (2) is positioned in the enclosing element (6) of the beverage preparation device (4) and the enclosing element (6) is positioned by means of a closing element (8) of the beverage preparation device (4), such as an extraction plate of the beverage preparation device (4) is closed in such a way that the outwardly extending flange (20) of the capsule (2) and at least part of the sealing element (28) of the capsule (2) sealingly between the surrounding element (6) and the closing element (8) of the beverage preparation device (4) are in engagement, the enclosing element (6) of the beverage preparation device (4) comprising an annular element (41) with a central annular element axis (41A) and a free contact end (30), characterized in that the sealing element (28) is formed integrally with the outwardly extending flange (20) and has a single ringf comprises a shaped projection (50) with a projection top, which from an inner foot portion (53) radially outside of a flat inner flange portion which extends between the capsule body side wall (16) and the projection (50), and an outer foot portion (54) radially inward a flat outer flange portion extending between the protrusion (50) and the corrugated outer edge (43) protruding axially towards the capsule body bottom (18), and wherein the flat outer flange portion (56) and the flat inner flange portion (52) are in line and wherein a radially outer wall (50B) of the projection (50) is oriented transversely to the flat outer flange portion (56), the corrugated outer edge extending axially on both sides of the flat outer flange portion,wherein the cover (14) is attached to the flat outer flange portion (56).wherein the capsule (2) comprises a bearing for the enclosing element (6) when the capsule (2) is positioned in the enclosing element (6) and the enclosing element (6) is closed by means of the closing element (8), the Bearing is formed at least by the projection (50),wherein the wall thickness of the aluminum capsule body (12) is between 20 and 200 micrometers, preferably between 80 and 110 micrometers, so that it is easily deformable when the capsule (2) is positioned in the enclosing element (6) of the beverage preparation device (4) and that enclosing element (6) is closed by means of the closing element (8) of the beverage preparation device (4),wherein the wall thickness of the aluminum cover (14) is 15 to 65 micrometers, preferably 30 to 45 micrometers and more preferably 39 micrometers,wherein the aluminum cover (14) is configured so that it tears open on the closing element (8) of the beverage preparation device (4), such as an extraction plate of the beverage preparation device (4), under the influence of the fluid pressure in the capsule (2),wherein the height of the sealing element section, which is first contacted by the free end of the enclosing element (6) when the enclosing element (6) is closed, is at least 0.8 mm and at most 2 mm,wherein the sealing element (28) and the remainder of the aluminum capsule body consist of the same plate material, andwherein the protrusion (50) has an outer upper end which extends about the capsule axis (12A) with a diameter of 31.9 to 32.4 mm.
[2]
2. Capsule (2) according to claim 1, wherein a radially inner wall (50A) of the projection (50) at an angle between 93 ° and 110 °, preferably between 95 ° and 98 ° and most preferably at an angle of 97 ° , is aligned with the flat inner flange portion (52).
[3]
3. The capsule (2) according to any one of the preceding claims, wherein the upper side of the projection forms a portion of the projection (50), for example half, a third or a quarter of the projection (50) which is axially furthest from the feet (53, 54 ) of the projection (50) is removed.
[4]
4. The capsule (2) according to any one of the preceding claims, wherein the projection (50) is configured such that its projection upper side exerts an outwardly directed radial force on the free contact end (30) of the annular element (41) when the capsule ( 2) is positioned in the enclosing element (6) of the beverage preparation device (4) and the enclosing element (6) is closed by the closing element (8) of the beverage preparation device (4).
[5]
5. The capsule (2) according to any one of the preceding claims, wherein the projection (50) is shaped so that it rolls radially outward and yields when it is compressed in the axial direction while having an outwardly facing surface (70) of the free contact end (30) of the annular element (41) is in contact.
[6]
6. capsule (2) according to any one of the preceding claims, wherein the outer diameter of the outwardly extending flange (20) of the capsule (2) is greater than the diameter of the capsule base (18).
[7]
7. capsule (2) according to any one of the preceding claims, wherein the outer diameter of the outwardly extending flange (20) is approximately 37.1 mm.
[8]
8. capsule (2) according to any one of the preceding claims, wherein the wall thickness of the aluminum cover (14) is less than the wall thickness of the aluminum capsule body (12).
[9]
9. capsule (2) according to any one of the preceding claims, wherein the corrugated outer edge (43) of the outwardly extending flange (20) has a largest dimension of about 1.2 millimeters.
[10]
10. Capsule (2) according to one of the preceding claims, wherein the aluminum capsule body (12) is truncated, wherein preferably the side wall (16) of the aluminum capsule body (12) forms an angle with a line transverse to the central capsule body axis (12A) of about 97.5 ° includes.
[11]
11. The capsule (2) according to any one of the preceding claims, wherein the capsule (2) comprises an inner surface and wherein an inner coating is present on the inner surface of at least the side wall (16) of the capsule (2).
[12]
12. The capsule (2) according to claim 11, wherein the aluminum cover of the capsule (2) is attached to the outwardly extending flange (20) by means of a sealing lacquer, the inner coating being made of the same material as the sealing lacquer.
[13]
13. Capsule (2) according to one of the preceding claims, wherein the capsule (2) comprises an outer surface and wherein the outer surface of the capsule (2) is provided with a colored lacquer.
[14]
14. Capsule (2) according to claim 13, wherein the outer surface of the colored lacquer is provided with an outer coating.
[15]
15. capsule (2) according to any one of the preceding claims, wherein the sealing element (28) is deformable so that the projection (50) at least a portion of the free contact end (30) of the annular element (41) fluid-sealingly contacted when using the maximum fluid pressure in the enclosing element (6) of the beverage preparation device (4) is in the range from 6 to 20 bar, preferably between 12 and 18 bar.
[16]
16. The capsule (2) according to any one of the preceding claims, wherein the sealing element (28) is deformable so that the projection (50) contacts at least part of the free contact end (30) of the annular element (41) in a fluid-sealing manner when during brewing the free contact end (30) of the annular element (41) exerts a force F2 on the sealing element (28) of the capsule (2), F2 being in the range from 500 to 1500 N, preferably in the range from 750 to 1250 N, when the Fluid pressure P2 in the enclosing element (6) outside the capsule (2) is in the range from 6 to 20 bar, preferably between 12 and 18 bar.
[17]
17. Capsule (2) according to one of the preceding claims, wherein the sealing element (28) is deformable so that the projection (50) at least a portion of the free contact end (30) of the annular element (41) fluid-sealingly contacted when the The free contact end (30) of the annular element (41) exerts a force F1 on the sealing element (28) of the capsule (2) before or at the beginning of the brewing process, the force F1 in the range from 30 to 150 N, preferably from 40 to 150 N and more preferably from 50 to 100 N when the fluid pressure P1 in the enclosing element (6) of the beverage preparation device (4) outside the capsule (2) is in the range from 0.1 to 4 bar, preferably 0.1 to 1 bar lies.
[18]
18. The capsule (2) according to any one of the preceding claims, wherein the sealing element (28) is deformable such that the projection (50) contacts at least part of the free contact end (30) of the annular element (41) in a fluid-sealing manner when the free contact end (30) of the annular element (41), which is pressed against the sealing element (28), has a plurality of radially extending open grooves (40) which are evenly spaced from one another in the circumferential direction of the free contact end (30) of the annular element (41) .
[19]
19. Capsule (2) according to one of the preceding claims, wherein a transition from the projection (50) to the flat outer flange portion (56) of the outwardly extending flange (20) has an inner radius of less than 0.15 mm, preferably less than 0 , 12 mm.
[20]
20. Capsule (2) according to one of the preceding claims, wherein the capsule (2) contains an extractable product as a substance for preparing a drinkable beverage, the extractable product preferably 5 to 20 grams, preferably 5 to 10 grams, more preferably 5 to 7 grams of an extractable product such as roast and ground coffee.
[21]
21. Capsule (2) according to one of the preceding claims, wherein the outer diameter of the outwardly extending flange (20) is approximately 37.1 mm and the diameter of the capsule base (18) is approximately 23.3 mm.
[22]
22. Capsule (2) according to one of the preceding claims, wherein the inner diameter of the free end of the side wall (16) of the aluminum capsule body (12) is approximately 29.5 mm and the distance between the free end of the side wall (16) of the aluminum capsule body (12) ) and an outermost edge of the outwardly extending flange (20) is about 3.8 millimeters.
[23]
23. Capsule (2) according to one of the preceding claims, wherein the capsule (2) is produced by deep drawing.
[24]
24. A system for preparing a drinkable beverage from a capsule (2) using a fluid fed into the capsule (2) under pressurea beverage preparation device (4) comprising an enclosing element (6) for receiving the capsule (2), wherein the enclosing element (6) comprises a liquid injection means for supplying pressurized fluid into the capsule (2), wherein the beverage preparation device (4 ) further comprises a closing element (8), such as an extraction plate, for closing the enclosing element (6) of the beverage preparation device (4), the enclosing element (6) of the beverage preparation device (4) further comprising an annular element (41) with a central Element axis (41A) of the annular element and a free contact end (30); anda capsule (2) according to any one of the preceding claims.
[25]
25. The system of claim 24, wherein the free contact end (30) of the annular element (41) is provided with a plurality of radially extending open grooves (40).
[26]
26. The system of claim 25, wherein the free contact end portion of the annular member (41) has an outer peripheral surface portion (70) which contacts the projection (50) when the capsule (2) is disposed in the enclosing element (6) and the enclosing element (6) is closed by means of the closing element (8), and wherein the radially extending open grooves (40) are deeper in an inner circumferential surface section (71) than in the outer circumferential surface section (70) or the radially extending open grooves (40) are not present in the outer peripheral surface portion (70).
[27]
27. The system of claim 24, 25 or 26, wherein the flat inner flange portion (52) has a radial width that is substantially greater than the radial thickness of the free contact end portion of the annular member (41), so that a gap between the free contact end portion of the annular element (41) and the side wall (16) of the aluminum capsule body remains.
[28]
28. System according to one of claims 24 to 27, wherein the capsule (2) is a capsule (2) according to claim 2 and wherein the annular element (41) is arranged for deforming the radially inner wall (50A) of the projection (50) .
[29]
29. System according to one of claims 24 to 28, wherein the capsule (2) is a capsule (2) according to claim 5 and wherein the annular element (41) has one or more bridges between outer and inner webs (81, 80), the or each bridge constituting an interruption of an annular space between the outer and inner webs (81, 80).
[30]
30. System according to one of claims 24 to 29, wherein the maximum fluid pressure in the enclosing element (6) of the beverage preparation device (4) when used is in the range from 6 to 20 bar, preferably between 12 and 18 bar.
[31]
31. System according to any one of claims 24 to 30, wherein the system is arranged so that, in use, a free end of the enclosing element (6) of the beverage preparation device (4) exerts a force F2 on the sealing element (28) during brewing Capsule (2) exerts to provide fluid sealing contact between the outwardly extending flange (20) of the capsule (2) and the enclosing element (6) of the beverage preparation device (4), where F2 is in the range of 500 to 1500N, preferably in The range from 750 to 1250 N is when the fluid pressure P2 in the enclosing element (6) of the beverage preparation device (4) outside the capsule (2) is in the range from 6 to 20 bar, preferably between 12 and 18 bar.
[32]
32. System according to one of claims 24 to 31, wherein the system is arranged such that, when used, before or at the start of brewing, a free end of the enclosing element (6) of the beverage preparation device (4) exerts a force F1 on the sealing element ( 28) of the capsule (2) to provide fluid sealing contact between the outwardly extending flange (20) of the capsule (2) and the enclosing element (6) of the beverage maker (4), where F1 is in the range of 30 to 150N , preferably 40 to 150 N, more preferably 50 to 100 N, when the fluid pressure P1 in the enclosing element (6) of the beverage preparation device (4) outside the capsule (2) is in the range from 0.1 to 4 bar, preferably 0, 1 to 1 bar.
[33]
33. System according to claim 25 or any one of claims 26 to 32 when dependent on claim 25, wherein the plurality of radially extending open grooves (40) in the tangential direction of the free contact end (30) of the annular element (41) of the beverage preparation device (4 ) are equally spaced relative to each other.
[34]
34. The system of claim 25 or any one of claims 26 to 33 when dependent on claim 25, wherein a free contact end (30) of the annular member (41) is provided with a plurality of radially extending open grooves (40), one largest Width of each groove (40) is 0.9 to 1.1 mm, preferably 0.95 to 1.05 mm, more preferably 0.98 to 1.02 mm, with a maximum height of each groove (40) in the axial direction of the enclosing element (6) of the beverage preparation device (4) is 0.01 to 0.09 mm, preferably 0.03 to 0.07 mm, more preferably 0.045 to 0.055 mm, most preferably 0.05 mm and wherein the number of grooves (40) is 90 to 110, preferably 96, and where optionally the radial width of the free contact end (30) at the location of the grooves (40) is 0.05 to 0.9 mm, preferably 0.2 to 0.7 mm and more is preferably 0.3 to 0.55 mm.
[35]
35. System according to one of claims 24 to 34, wherein, when, in use, the closing element (8) of the beverage preparation device (4) closes the enclosing element (6) of the beverage preparation device (4), at least the free contact end (30) of the Moving the surrounding element (6) of the beverage preparation device (4) under the influence of the fluid pressure in the surrounding element (6) of the beverage preparation device (4) relative to the closing element (8) of the beverage preparation device (4) towards the closing element (8) of the beverage preparation device (4) can to exert the maximum force between the flange (20) of the capsule (2) and the free end of the enclosing element (6) of the beverage preparation device (4), wherein the enclosing element (6) preferably has a first part (6A) and a second part (6B), wherein the second part (6B) comprises the free contact end (30) of the enclosing element (6), wherein the second part (6B) relative to the first part (6A) between a first and second position, the second part (6B) moving from the first position to the second position in the direction of the closing element (8) under the influence of fluid pressure in the enclosing element (6) where the force F1 is in the range of 30 to 150 N, preferably 40 to 150 N, more preferably 50 to 100 N, when the second part (6B) is in the first position, with a fluid pressure P1 in the enclosing element (6) in the range from 0.1 to 4 bar, preferably 0.1 to 1 bar, and wherein the force F2 is in the range from 500 to. 1500 N, preferably in the range from 750 to 1250 N, when the second part (6B) is moved into the second position under the influence of the fluid pressure P2 in the enclosing element (6), the fluid pressure P2 in the range from 6 to 20 bar, preferably between 12 and 18 bar.
[36]
36. System according to one of claims 24 to 35, wherein during use, when the closing element (8) of the beverage preparation device (4) closes the enclosing element (6) of the beverage preparation device (4), the enclosing element (6) of the beverage preparation device ( 4) relative to the closing element (8) of the beverage preparation device (4) under the action of the fluid pressure in the enclosing element (6) of the beverage preparation device (4) in the direction of the closing element (8) of the beverage preparation device (4) can move to the maximum force between the Exert the flange (20) of the capsule (2) and the free end of the enclosing element (6) of the beverage preparation device (4).
[37]
37. Use of a capsule (2) according to one of claims 1 to 23 in a beverage preparation device (4) for preparing a drinkable drink, which comprises an enclosing element (6) for receiving the capsule (2), the enclosing element (6) a liquid injection means for supplying pressurized fluid into the capsule (2), the beverage preparation device (4) further comprising a closing element (8), such as an extraction plate, for closing the enclosing element (6) of the beverage preparation device (4), wherein the enclosing element (6) of the beverage preparation device (4) further comprises an annular element (41) having a central element axis (41A) of the annular element and a free contact end (30);- wherein the capsule (2) contains a substance for preparing a drinkable drink by extracting and / or dissolving the substance by means of the liquid fed into the capsule under pressure by the liquid injection means of the beverage making device (4), the capsule (2) further a sealing element (28) formed integrally with the outwardly extending flange (20) for providing fluid sealing contact with the enclosing element (6) of the beverage maker (4) when the capsule (2) is in the enclosing member (6) of the beverage maker (4) is positioned and the enclosing element (6) is closed by means of the closing in such a way that the outwardly extending flange (20) of the capsule (2) and at least a portion of the sealing element (28) of the capsule (2) sealingly between the enclosing element (6) and the closing element (8) of the beverage preparation device (4) in engagement stand.
[38]
38. Use according to claim 37, wherein when using the maximum fluid pressure in the enclosing element (6) of the beverage preparation device (4) is in the range from 6 to 20 bar, preferably between 12 and 18 bar.
[39]
39. Use according to claim 37 or 38, wherein when used during brewing a free end of the enclosing element (6) of the beverage preparation device (4) exerts a force F2 on the sealing element (28) of the capsule (2) in order to establish a fluid sealing contact between the outwardly extending flange (20) of the capsule (2) and the enclosing element (6) of the beverage preparation device (4), where F2 is in the range of 500 to 1500 N, preferably in the range of 750 to 1250 N, when the fluid pressure P2 in the enclosing element (6) of the beverage preparation device (4) outside the capsule (2) is in the range from 6 to 20 bar, preferably between 12 and 18 bar, and there is a fluid sealing contact there.
[40]
40. Use according to one of claims 37 to 39, wherein when used before or at the start of brewing, a free contact end of the enclosing element (6) of the beverage preparation device (4) exerts a force F1 on the sealing element (28) of the capsule (2), to provide fluid sealing contact between the outwardly extending flange (20) of the capsule (2) and the enclosing element (6) of the beverage preparation device (4), with F1 in the range of 30 to 150N, preferably 40 to 150N, more preferred 50 to 100 N when the fluid pressure P1 in the enclosing element (6) of the beverage preparation device (4) outside the capsule (2) is in the range from 0.1 to 4 bar, preferably 0.1 to 1 bar, and where there there is fluid sealing contact.
[41]
41. Use according to one of claims 37 to 40, wherein the free contact end (30) of the ring-shaped element (41) is provided with a plurality of radial grooves (40), the plurality of radially extending open grooves (40) at regular intervals from one another are arranged in the tangential direction of the free contact end (30) of the annular element (41) of the beverage preparation device (4).
[42]
42. Use according to one of claims 37 to 41, wherein the annular element (41) presses the projection (50) outwards.
[43]
43. Use according to one of claims 37 to 42, wherein the capsule (2) is a capsule (2) according to claim 5, and wherein the projection (50) rolls radially outward and gives way where it is compressed by the bridge.

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同族专利:

公开号 | 公开日

RU2019113328A3|2020-12-23|

US20200047987A1|2020-02-13|

IL265886A|2021-12-01|

IL265887D0|2019-06-30|

EP3523220A1|2019-08-14|

PT3523217T|2021-04-05|

CA3039165A1|2018-04-12|

DK3523217T3|2021-03-29|

DK3523220T3|2021-06-07|

EP3901060A4|2021-10-27|

NL2019692B1|2018-04-16|

CA3039159C|2021-06-15|

BR112019006791A2|2019-07-09|

CN109789966A|2019-05-21|

IL265887A|2021-12-01|

ES2858173T3|2021-09-29|

AU2017338598B2|2020-09-17|

US20200047986A1|2020-02-13|

AU2017338602B2|2020-09-17|

JP2019536699A|2019-12-19|

RU2019113328A|2020-11-09|

PT3523220T|2021-06-09|

AU2017338598A1|2019-05-02|

AU2017338602A1|2019-05-02|

NL2019254B9|2018-09-10|

RU2019113326A|2020-11-09|

US20220055827A1|2022-02-24|

BR112019006740A2|2019-06-25|

IL265886D0|2019-06-30|

RU2738286C2|2020-12-11|

KR20190063466A|2019-06-07|

CN109789967A|2019-05-21|

EP3901060A1|2021-10-27|

CA3039165C|2021-06-15|

US11198557B2|2021-12-14|

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RU2754015C2|2021-08-25|

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KR20190063465A|2019-06-07|

PL3523217T3|2021-09-06|

WO2018067013A1|2018-04-12|

NL2019254B1|2018-04-16|

DE202017007161U1|2019-11-15|

JP2019534750A|2019-12-05|

ES2874278T3|2021-11-04|

CH714356B1|2020-08-14|

DE202017007160U1|2019-11-21|

EP3904237A4|2021-11-03|

PL3523220T3|2021-09-20|

RU2019113326A3|2020-11-09|

EP3523217A1|2019-08-14|

MX2019003873A|2019-08-14|

EP3904237A1|2021-11-03|

CA3039159A1|2018-04-12|

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

NL2017592|2016-10-07|

NL2019254A|NL2019254B9|2016-10-07|2017-07-14|A capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device|

PCT/NL2017/050659|WO2018067009A1|2016-10-07|2017-10-06|A capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device|

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