• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a method for interconnecting loose grains of insulation present in a cavity wall, comprising the steps of making at least one hole extending through the depth of an inner or outer leaf of a cavity wall; inserting a spraying element with spray nozzle through the at least one hole in the cavity, so that the spray nozzle discharges into the cavity wall; and spraying a binder through the spray element into the cavity wall. The invention further relates to a spraying device for spraying a binder in a cavity wall with such a method, comprising a spraying element comprising a tube or hose-like element at or near a first end of which - whether at least one spray nozzle is provided in a tube-like element, and a supply device for supplying a binding agent to an opposite end of the spray element.
    公开号:BE1027576B1
    申请号:E20205582
    申请日:2020-08-21
    公开日:2021-04-13
    发明作者:Stefan Jozef Maria Nooijens；Arnold Hofland
    申请人:S Nooijens Beheer B V；
    IPC主号:
    专利说明:

    Short description: Method and device for connecting loose insulation granules present in a cavity wall
    DESCRIPTION According to a first aspect, the present invention relates to a method for interconnecting loose, or partially loose, insulation granules, such as EPS (expanded polystyrene) insulation beads, perlite, vermiculite, airgel granulation, airgel flakes or other hydrophobic elements present in a cavity wall. insulation granules.
    Such insulation granules are used, among other things, for insulating a space with a double wall between which there is an empty space, also called a cavity. In a modern method, the space is filled by blowing insulation granules mixed with binding agent into the empty space with the aid of a hose that is fed through an opening made for this purpose at the top of one of the walls. The granules are blown into the empty space by means of a certain filling pattern and pile up until the empty space is filled. The binder then hardens and a solid, homogeneous filling of mutually connected insulation grains is formed in the empty space.
    However, there are also other methods of insulating a cavity using insulation granules. In practice it appears that the grains are sometimes not properly connected to each other. When a hole is created in the outer leaf, or possibly in the inner leaf of the double-walled wall, the insulation grains flow out of the cavity, as it were. This can be counteracted by closing the gap quickly. But sometimes that is not an option, for example when the hole is or has been made consciously, for example to install a frame in the wall or to make an extra feed-through. The current solution consists of making an opening in the outer leaf of the cavity wall and then sucking the insulation granules from the cavity wall out of the cavity, in order to subsequently insulate the cavity wall again with insulation granules. This is a relatively laborious and expensive solution, among other things because the insulating granules that have been sucked away must be collected and removed, and the cavity must then be filled again with new (supplied) insulating granules and a binding agent. When the insulation grains are still partly connected to each other, their removal is extra time-consuming and expensive. There is also a risk of damage to the facade due to breaking of existing masonry. Recovered by bricklaying again. Not the same stone available. Not even a hole may be made in monumental buildings.
    The object of the present invention is to provide a better solution to the problem of the loose insulation grains in an empty space between two sheets of a wall than the present method. This object is achieved according to the present invention by a method for interconnecting loose insulation granules present in a cavity wall, comprising the steps of: - making at least one hole extending through the depth of an inner or outer leaf of a cavity wall. ; - inserting a spraying element with a spraying head from outside the cavity wall through the at least one hole in the cavity, such that the spraying head opens into the cavity; and - subsequently spraying a binder through the spray element with the spray nozzle into the cavity wall.
    It has been found that a reasonably liquid binder, for example a binder with a viscosity in the range of 3 to 250 mPa, preferably between 10 and 50 mPa, remains somewhat behind on the insulating grains over which the binder runs, but also as a result of the force of gravity runs down through the insulation granules and can thus reach the bottom insulation granules with the correct dosage. Dispersion glues, or so-called white glues comprising a polymer dispersed in water, are very suitable for this. The polymers in aqueous dispersions are very finely divided as innumerable particles with granules having an average particle size of 0.25 microns. Only when the water evaporates will the particles be forced and coalesce into a film (film formation).
    The drying time depends on the vapor pressure (relative humidity and temperature) in the cavity. In the days after spraying the binder into the cavity, the binder hardens and a connection of the insulation granules is realized into a solid homogeneous filling of insulation granules. Insulation granules present in the cavity therefore no longer need to be removed and removed from the cavity by breaking out the masonry bricks and no new insulation granules need to be placed in the cavity. The necessary equipment, as will be described below,
    relatively easy to transport and use to the location. Thus, the object of the present invention has been achieved with this method.
    Incidentally, the method according to the present invention can be used excellently for insulating a cavity that is still unfilled, for instance by providing relatively large bead filling openings for filling the cavity with insulation grains, actually filling the cavity with insulation grains, possibly closing the cavity. the bead holes and then applying the steps of the first aspect of the invention. In an embodiment according to the present invention it is preferred that a series of holes spaced apart across the width of the wall is provided, the mutual distances between adjacent holes being preferably always at least substantially equal. It has been found that the binder spreads over a limited width of the wall, so that a parabolic run-off pattern of the binder over the insulation grains is obtained. By arranging a number of holes next to each other, a number of adjacent, preferably overlapping parabolic patterns are created in the practice of the invention.
    For a good distribution of the binder over the insulation grains in the cavity wall, it is preferred that the mutual distance between two adjacent holes is between 3 and 25 cm, preferably between 4 and 20 cm, further preferably between 5 and 15 cm. , most preferably less than 12 cm. A pattern of overlapping parabolas is thus obtained, so that after the binder has hardened, one solid, homogeneous filling of mutually connected insulation grains is formed, as it were.
    When the at least one hole is made substantially in the upper part of the wall, and preferably also just below any existing windows or other interruptions that interrupt the cavity in vertical direction, all lower-lying insulation grains in the cavity can be penetrated by the binder. reached. It will be clear that an interruption, for instance a window frame, of a cavity viewed in the vertical direction, prevents the insulation grains situated under the interruption from being reached by the binder. By again making holes in the cavity wall just below the window frame and spraying binder there into the cavity, the insulation grains present under the interruption can also be reached.
    In a preferred embodiment of the invention, a liquid, relatively slow curing binder is sprayed into the cavity. Because of its flow property, a binder with such properties offers the possibility of reaching the insulation grains over the entire height of the wall through holes which are only provided at the top of the wall. Because the binder hardens relatively slowly, distributing the binder over the entire height of the wall can take some time, for example days.
    It is preferred that the binder is driven in the direction of the spray nozzle under such a pressure that between 250 and 10000 ml / min, preferably between 500 and 5000 ml / min of binder is introduced into the cavity. This allows the binder to be spread relatively wide over the space next to the hole in the cavity. In the cavity there are usually insulating granules around the spray head of the spraying element, which granules limit the radius of action of the binder, at least during the spraying of the binder in the cavity.
    If in the method according to the invention a spraying device with several substantially fixed mutual spacing, preferably at least substantially aligned with respect to one another, spraying elements with spray heads is used, correspondingly oriented holes can be made in each other. a wall, and a binder can be sprayed into the cavity through several holes at the same time. This improves efficiency.
    For a good distribution and curing of the binder it is preferred that a binder with the following properties is sprayed into the cavity.
    When in the method according to the present invention between 5 and 100 liters, preferably between 20 and 70 liters, and further preferably between 25 and 50 liters of binder per m insulation granules are sprayed into the cavity, on the one hand the binder can be distributed over the entire height of the cavity, without on the other hand running the risk of a large amount of excess binder accumulating at the bottom of the cavity. Incidentally, it will be clear that the properties of the binder, such as viscosity and curing time and the environmental conditions, such as temperature of the binder and of the environment and air humidity, influence the achievement of the optimum conditions. However, a good mutual adhesion of the insulation grains can be obtained within reasonable margins.
    The method has been described above for restoring the interconnection of insulation granules in a complete wall. However, the method can just as well be used to prevent the insulation grains from coming loose, for instance some time before a frame is fitted in a cavity wall.
    According to a second aspect, the present invention relates to a spraying device adapted for spraying a binder in a cavity wall, for instance for a method according to the first aspect of the invention. The underlying problem statement corresponds to that of the previously described method according to the invention and advantages corresponding with the method can therefore be achieved with the spraying device. Incidentally, the spraying device can also be designed and / or used for other purposes than for applying binding agent in a cavity. In that case, a different fluid can be used instead of the binder.
    In order to achieve the advantages contemplated by the present invention, the spraying device comprises a spraying element in the form of a tube or hose-like element, at or near one end of which at least one spray nozzle is provided in the circumferential wall, and a supplying device. for supplying a binder to an opposite end, also referred to as the inlet end, of the spray element. The part of the tube with the at least one nozzle is also referred to as a nozzle. The inlet end is provided with a feed opening for the binder. In a very simple embodiment, the spray nozzle is a hole or through bore in the circumferential wall of the tube or hose-like element. The circumferential wall of a tube is the wall that extends parallel to a flow channel formed by the tube. The inlet end of the spray element is preferably open to serve as a supply opening. The opposite end is preferably closed, so that in use the binder flows or can flow out of the spray element through the at least one nozzle and not out of the head end. Binder then flows at right angles to the direction in which the flow channel extends from the at least one nozzle of the nozzle.
    In contrast to spraying devices with which binder-mixed insulation beads are sprayed into a space to be insulated, such as a cavity wall, a spraying device according to the present invention does not require a connection for bead supply. This is therefore lacking in a spraying device according to the present invention. Incidentally, this second aspect of this document is also intended to protect a spraying device which is provided with a supply device for insulating beads, but which can be switched off in order to pass only (diluted) binder through at least one in a circumferential wall of a spraying device. spray nozzle provided with the element into a space to be insulated, in order to glue together (partially) loose pearls located in the space.
    When the spraying device is used in a method according to the first aspect of the present invention, the tubular or hose-like element with the spray nozzle is introduced through the at least one hole in the cavity and a binding agent is supplied by the supply device, which is sprayed through the nozzle into the cavity. When sufficient binder has been sprayed into the cavity, the spray element is removed from the at least one hole. This process can be repeated for any other holes made in the wall.
    In the spraying device according to the present invention, several spray nozzles are preferably provided at or near the first end in the circumferential wall of the tube or hose-like element, of which at least two nozzles are preferably located on opposite wall parts, i.e. on either side of the the flow channel, formed by the tube wall, of the spray element. When more than one nozzle is provided, more binder can be sprayed into the cavity per unit of time, and / or the binder can be better distributed over the cavity and thus over the insulation granules.
    For a good dosage and distribution of binder, the at least one nozzle preferably has a diameter in the range of 0.5 to 10 mm, preferably from 0.7 to 5 mm, further preferably between 0.9 to 2 mm.
    When spray nozzles are provided on two opposite wall parts in a longitudinal direction of the tube or hose-like element spaced apart nozzles, the mutual distance between two adjacent nozzles being in the range of 4 to 20 mm, preferably in the range of 5 up to 15 mm, further preferably in the range of 6-10 mm, the spray nozzle can be arranged in the cavity such that the nozzles are oriented in opposite horizontal directions. A binder can then be distributed over the insulation grains over a relatively wide area next to the at least one hole in the wall, after which the binder can sink down through the cavity between the grains over a relatively wide range, whereby part of the binder is always remains on the insulation grains.
    It is preferred that the supply device comprises a pressure reservoir with binder or a supply line and a pump. As stated, a relatively wide range of the insulation grains can be achieved by spraying binder under pressure into the cavity.
    For spraying binder properly dosed and distributed in the cavity, it is preferred that the supply device comprises pressure setting means with which the pressure at which the binder is fed to the spray element can be measured. Incidentally, the pressure setting means can also be provided outside the supply device and indirectly adjust the supply pressure of the binder.
    When the supply device includes a pressure gauge, the actual pressure in the supply line can be fed back and the pressure can be better controlled.
    For a good dosage of the binder it is preferred that the supply device comprises a flow meter which measures the amount of binder that is supplied to the spray element.
    The present invention will be further elucidated hereinbelow with reference to the appended drawing, in which: Figure 1a shows a schematic representation of the process of applying binder according to the present invention in a cavity; Figure 1b shows a schematic representation as in Figure 1 for a wall provided with a frame; and Figure 2 shows a spray element according to the present invention.
    Turning now to figure 1, a house 1 with cavity walls 3a, 3b, 3c filled with insulation grains 2 is schematically shown. As can be seen in figure 1 and will be explained below, a cavity 4a is filled with loose insulation granules 2, which could of course also be insulation granules which, in the example, contain insulation beads 2, in cavity 4b mutually connected insulation beads 2, or at least insulation beads over which a glue. sprayed as binder, which adhesive may or may not have already hardened. Cavity 4c is under treatment and is partly filled with loose insulation beads 2, and partly with insulation beads 2 over which glue has been sprayed.
    Holes 5 have been drilled almost completely at the top of cavity wall 3c, with a horizontal mutual distance of half a brick length. In each of, in this example, 4 holes, there is a spray element 6 according to the present invention. But the number of holes can be increased to 10, 20 or more.
    The spraying elements 6 are connected via a pipe 7 to a glue reservoir 8 under pressure and provided with an operating device 9 with which at least the pressure with which glue is fed to the spraying elements 6 can be set.
    The amount of glue that flows through the line 7 to the spraying elements per unit of time can also be adjusted with the operating device.
    Such fluid reservoirs and the adjustment of such devices are well known and are therefore not discussed in detail in this document.
    When spraying glue in the cavity, here cavity 4c, the height of the relevant cavity wall 3c is measured, at least the height over which the glue must spread.
    Based on this, the amount of glue to be sprayed into the cavity 4c is determined.
    For a 6 cm cavity, this amount is approximately 1/3 liter per height meter.
    But this also depends on the mutual distance of the holes 5. The spraying elements 6 are then inserted into the wall, so that the spray head (not shown in Figs. 1) is located in the cavity 4c.
    Subsequently, the supply of glue to the spraying elements 6 is started with the operating device 9 of the glue reservoir 8 until sufficient glue has been sprayed into the cavity 4c.
    The adhesive slowly flows down between the insulation beads 2 in the cavity 4c.
    In the figure, it is true that the area that the adhesive flows through to the bottom of the cavity wall 3c has been drawn with wavy lines 10. Depending on the viscosity of the adhesive, it may take some time, up to minutes, for the adhesive to reach the bottom of the cavity 4c reached.
    Figure 1b shows a situation of a house 31 which is comparable to house 1 of figure 1a, however, a frame 41 for a window is provided in cavity wall 34c.
    Holes 35a, b for the insertion of spray elements are provided on the top of cavity wall 33c, respectively just below the frame 41. Cavity 34c is in a state in which through all holes 35a at the top of the wall glue in the cavity of the wall. wall 33c has been inserted.
    The glue pattern is indicated by wavy lines 40a.
    However, less glue has been introduced through the holes 35b located above the frame 41.
    After all, the frame 41 prevents the glue from running all the way down into the cavity concerned, and less glue is required for the reduced height.
    Another consequence of the presence of the frame 41 is that the space under the frame 41 cannot be filled with glue from holes 35b.
    For this reason, holes 35c are provided under the frame 41, through which a quantity of glue corresponding with the relevant distance from the underside of the cavity, by means of spraying
    elements 36, pipe 37 and glue reservoir 38 under the frame can be placed in the cavity. Its glue pattern is indicated by wavy lines 40b. Figure 2 shows a drawing of an injection needle in the shape of a spray element 61 according to an embodiment of the present invention. Spray element 61 is formed by a tube 62 having a wall of stainless steel with an open proximal end 63 that is connectable to a fluid line (not shown in Figure 2), such as an adhesive line (7, 37 in Figures 14, 1b) and an opposite closed distal end 64. The tube 62 in the present example has a length of 20 cm. It will be clear that the length of the pipe and the following distances depend on a space to be filled and its boundaries, for instance a cavity in a wall with an inner leaf and an outer leaf. The diameter of the tube 62 is 6 mm. Through the wall of the tube 62, more near the distal end 64 than near the proximal end 63, spray holes 65 functioning as nozzles are provided. The diameter of the spray holes 65 is 1.5 mm. The mutual center-to-center distance between two adjacent spray holes 65 is 9.5 mm in this exemplary embodiment. In use, the spray element is connected by means of connecting means 66 to a fluid conduit (not shown) which connects the spray element in communicative manner with a glue source, such as a glue reservoir under pressure.
    In the figures and the description, only a few exemplary embodiments of the present invention are shown and discussed respectively. It will be clear that many modifications, whether or not obvious to those skilled in the art, can be made within the scope of the present invention, which is defined in the appended claims.
    For instance, a spray element can have other dimensions and be manufactured from a different material, for instance a different metal or plastic. Other suitable binders can be used instead of the said glue. The application of the present invention need not be limited to gluing insulation granules and not to a cavity. The application is not limited to repair work, but also extends to interconnecting loose granules present in a space for the first time. The term loose grains is to be interpreted broadly and includes loose grains located between interconnected grains. In the examples, the line branches out into four sub-lines. it is also possible that a spray element has one connection to a supply line and that the spray element has a number of branches to a number of spray heads.
    A situation with only one nozzle is also possible.
    权利要求:
    Claims (17)
    [1]
    Method for interconnecting loose granules of insulation present in a cavity wall, comprising the steps of: - arranging at least one hole extending through the depth of an inner or outer leaf of a cavity wall; - inserting a spraying element with a spraying head from outside the cavity wall through the at least one hole in the cavity, such that the spraying head opens into the cavity; and - subsequently spraying a binder through the spray element with the spray nozzle into the cavity wall.
    [2]
    2. A method according to claim 1, wherein a series of holes spaced apart across the width of the wall is provided, wherein the mutual distances between adjacent holes are preferably always at least substantially equal.
    [3]
    A method according to claim 2, wherein the mutual distance between two adjacent holes is between 3 and 25 cm, preferably between 4 and 20 cm, further preferably between 5 and 15 cm, most preferably less than 12 cm.
    [4]
    4. A method according to claim 1, wherein a hole or holes are / are made substantially in the upper part of the lake, and preferably also under any windows or other interruptions that interrupt the cavity in vertical direction.
    [5]
    A method according to any one or more of the preceding claims, wherein a liquid, relatively slowly hardening binder is sprayed into the cavity.
    [6]
    A method according to any one or more of the preceding claims, wherein the binder is driven under pressure, preferably such a pressure in the direction of the spray nozzle, that between 250 and 10000 ml / min, preferably between 500 and 5000 ml / mn of binder cavity is brought.
    [7]
    A method according to any one or more of the preceding claims, wherein a spraying device with several substantially fixedly spaced, preferably at least substantially aligned with respect to one another, spraying elements comprises spray heads.
    [8]
    8. A method according to one or more of the following claims, wherein a binder with the following properties is sprayed into the cavity.
    [9]
    Method according to one or more of the preceding claims, wherein a ratio of the binder and the insulating material is between 5 and 100 liters / m3, preferably between 20 and 70 liters / m3, further preferably between 25 and 50 liters / m3. is sprayed into the cavity.
    [10]
    10. Spraying device adapted for spraying a binder in a cavity wall with a method according to one or more of the preceding claims, comprising a spraying element with a tube or hose-like element, at or near a first end of which in the circumferential wall. at least one spray nozzle is provided with the tube or hose-shaped element, and a supply device for supplying a binding agent to an opposite second end of the spray element.
    [11]
    Spraying device according to claim 10, wherein several spray nozzles are provided at or near the first end in the circumferential wall of the tube or hose-like element, of which at least two nozzles are preferably located on opposite wall parts of the spray element.
    [12]
    Spraying device according to claim 10 or 11, wherein a spray nozzle has a diameter in the range of 0.5 to 10 mm, preferably from 0.7 to 5 mm, further preferably between 0.9 to 2 mm.
    [13]
    Spraying device according to one or more of claims 10-13, wherein two opposite wall parts are provided with spray nozzles spaced apart in a longitudinal direction of the tubular or hose-like element, the mutual distance being situated between two adjacent spray nozzles. in the range of 4 to 20 mm, preferably in the range of 5 to 15 mm, further preferably in the range of 6-10 mm.
    [14]
    Spraying device according to one or more of claims 10-14, wherein the supply device comprises a pressure reservoir with binding agent or a supply line and a pump.
    [15]
    Spraying device as claimed in one or more of the claims 10-14, wherein the supplying device comprises a flow rate setting means, with which the flow rate at which the binding agent is supplied to the spraying element can be measured.
    [16]
    Spraying device according to claim 15, wherein the supply device comprises a pressure gauge.
    [17]
    Spraying device according to one or more of claims 10-16, wherein the supply device comprises a pressure gauge which measures the pressure with which the binding agent is supplied to the spray element.
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    同族专利:
    公开号 | 公开日
    NL2023677B1|2021-04-21|
    BE1027576A1|2021-04-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4272935A|1980-02-19|1981-06-16|Retro-Flex, Inc.|Field-installed insulation and apparatus for and method of making and installing the same|
    GB2139118A|1983-04-30|1984-11-07|Enzo Casale|Apparatus for injecting material into a wall|
    US5666780A|1995-12-14|1997-09-16|Guardian Industries Corp.|Fiberglass/dry adhesive mixture and method of applying same in a uniform manner|
    US5947646A|1997-02-25|1999-09-07|Guardian Fiberglass, Inc.|System for blowing loose-fill insulation|
    NL2014884B1|2015-05-29|2017-01-31|S Nooijens Beheer B V|An apparatus and a method for dispensing bead insulation into cavity walls for providing insulation between two skins of the walls.|
    NL2015006B1|2015-06-22|2017-01-24|S Nooijens Beheer B V|Filling gun for applying insulation in a cavity wall of a building, as well as a related method.|
    法律状态:
    2021-05-26| FG| Patent granted|Effective date: 20210413 |
    优先权:
    申请号 | 申请日 | 专利标题
    NL2023677A|NL2023677B1|2019-08-21|2019-08-21|Method and device for connecting loose insulation granules present in a cavity wall|
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