• 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:
    (57) A dish is provided having a top part and a base part. The top part includes an upper surface defining a cross-section to receive a food-item to be heated, and a lower surface having a central part. The lower surface includes a rim to support the dish over a level plane. The lower surface further includes an abutment zone provided between the central part and the rim towards an inner side in a radial direction along the lower surface. The base part is sealingly fixed to the top part at the abutment zone. The base part defines an inner space with the top part. The inner space is at least partially filled with a latent heat storing material. The abutment zone of the dish has a radius of curvature of at least 2 mm, when measured in the radial direction along the lower surface.
    公开号:BE1023979B1
    申请号:E2016/0119
    申请日:2016-06-30
    公开日:2017-09-28
    发明作者:Pol Speleers；Karim Redjal
    申请人:Probalco Bvba；
    IPC主号:
    专利说明:

    Dish for serving food and method for producing it
    Technical area
    The present invention generally relates to a dish for serving food, and more specifically relates to a dish with a latent heat-saving material to keep food warm for a longer period of time.
    Background
    It is well known that temperature of food starts to fall as soon as it is removed from the area where it was cooked / baked, because the food is generally warmer than the environment and therefore emits heat. This is especially true for commercial kitchens, for example restaurants, hospitals, canteens, cafeterias and, generally, the catering industry, where food is prepared in a central kitchen and must be served to individuals who are not in the vicinity of the central kitchen, as a result, the time required to transfer food from the kitchen to the intended table is often considerable. Accordingly, the hot prepared food will cool quickly and will not retain the heat for a long enough time. Furthermore, in such circumstances, typically, the food loses its original taste and can therefore be a disappointment for the customer.
    Much time and effort has already been spent solving this problem, usually by minimizing rapid cooling of the food. One particular approach that is mainly used by restaurants is preheating the trays, so that part of the heat loss by the food can be compensated for by the heat released by such preheated trays. However, this approach has a certain limit. Because the dishes can only be preheated to a temperature that can be safely manipulated by a waiter and / or the customer. Moreover, the dish also has a limited heat storage capacity, generally dependent on the heat coefficients of the material from which the dish is made. Some catering companies also use expensive and complicated carriers that cover the dish with the food from the kitchen to the table, and where such carriers have heaters to keep the food within a desired temperature range. But here too, once the lid is removed for table service, the food starts to cool quickly.
    In other cases, heat storage trays of various types have been developed in the past to keep serving trays warm during transfer from the kitchen to the patient or guest. Such previously proposed heat storage trays usually have upper and lower walls welded together at their edges to form a double-walled with a cavity inside. Typically, a heavy heat storage plate is provided in this cavity which serves as a heat sink which is used to keep a plate warm on the dish and to protect the food from thermal loss. Such a food serving plate is disclosed in WIPO Publication No. 2015 011 195 (hereinafter referred to as the '195 Publication), and relates to a plate suitable for directly preparing and serving meals thereon. The plate comprises a heat storage material that keeps the meal presented thereon warm for a longer period than on normal plates without heat storage material. Such trays, usually made of ceramic, with the heat-storage material are produced by a baking method, wherein two separate pieces are glued together to provide a cavity in which the heat-storage material is provided. Because ceramic materials tend to shrink during the baking production step, the dimensions of the tray and more particularly of the zone where the two separate parts are to be glued together are difficult to control. When gluing both parts together, however, a perfectly sealed connection must be obtained to prevent the heat storage material from flowing away during heating of the tray.
    Therefore, there is a need for a ceramic tray that can be produced with the known baking production techniques and which provides means to keep the shape of the ceramic tray stable, especially at the contact zone, to obtain a well-sealed joint for holding the heat storage material.
    Summary
    In one aspect of the present invention, a tray is provided with an upper portion and a base portion. The upper portion includes an upper surface that defines a cross section in which food can be received. The upper portion further comprises a lower surface, opposite the upper surface, with a central portion. The bottom surface includes a collar projecting in a direction away from the top surface to support the dish over a flat surface, so that the collar limits the central portion. The bottom surface further comprises an abutment zone provided between the central portion and the edge and includes a contact area between the bottom surface of the central portion and the abutment zone. The base plate is attached to the abutment zone in a sealing manner at the upper portion. The base portion defines an interior space with the top portion. The interior space is at least partially filled with a latent heat storage material. The contact area between the central part and the abutment zone of the dish has a minimum curvature radius of at least 2 mm when measured in the radial direction along the lower surface.
    In another aspect of the present invention, a production method for the dish is provided. The method comprises preparing a first mold for casting the upper part. The first mold has an inner cavity that defines counter surfaces corresponding to the abutment zone for the upper portion, so that the abutment zone has the radius of curvature of at least 2 mm. The method also includes preparing a second mold for casting the base portion. The second mold has an inner cavity that defines counter surfaces corresponding to an outer curved profile for the base portion, the outer curved profile in turn corresponding to the abutment zone. The method further comprises preparing castings from the top portion and the base portion by means of the first mold and the second mold, respectively. The method further comprises baking the castings from the top portion and the base portion to obtain baked castings from the top portion and the base portion. The method further comprises applying glaze to the baked casting from the upper portion and the base portion to obtain glazed castings. The method further comprises baking the glazed castings of the top portion and the base portion. The method further comprises a latent heat storage material along the lower surface of the upper portion. The method further comprises gluing the base portion to the upper portion to the abutment zone so that the latent heat storage material becomes trapped in an interior space between the upper portion and the base portion.
    The details of one or more embodiments are included in the accompanying drawings and the description below. Other aspects, features and advantages of the subject matter disclosed herein become apparent from the description, the drawings, and the claims. (also describe keeping cool) (dimensional stability is not really important for isostatic pressing) For large plates a diagonal abutment line may be needed to prevent the central invasion, in which case the counter plate is replaced by 2 separate plates, each for half of the board.
    BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial perspective view of a cross-sectional dish according to an embodiment of the present invention; FIG. 2 is a sectional side view of the dish of FIG. 1 without a latent heat storage material according to an embodiment of the present invention; FIG. 3 is a sectional side view of the dish of FIG. 1 with a latent heat storage material according to an embodiment of the present invention; FIG. 4 is a side cross-sectional view of an upper portion of the dish of FIG. 1 according to an embodiment of the present invention; FIG. 5 is a side cross-sectional view of a base portion of the dish of FIG. 1 according to an embodiment of the present invention; FIG. 6 is a flow chart showing steps for a method of producing the dish of FIG. 1 according to an embodiment of the present invention; FIG. 7 is a cross-sectional side view of a mold for casting the upper portion of FIG. 4 according to an embodiment of the present invention; and FIG. 8i is a cross-sectional side view of a mold for casting the base portion of FIG. 5 according to an embodiment of the present invention.
    Detailed description
    As required, a schematic, purely illustrative embodiment of the present application is described herein; however, it should be noted that the disclosed embodiment is merely illustrative of the present invention, which may be embodied in various and / or alternative forms. Specific structural and functional details disclosed herein are not to be interpreted as constituting a limitation, but merely as a basis for the claims and as a representative basis for teaching anyone skilled in the art to use the present invention in virtually any suitable detailed structure. .
    Aspects, advantages, and / or other features of the exemplary embodiment of the invention become apparent through the following detailed description, which discloses various non-limiting embodiments of the invention. When describing characterizing embodiments, a specific terminology is used for clarity. However, the embodiments are not intended to be limited to this specific terminology. It should be noted that each specific part includes all technical equivalents that work in a similar way to achieve the same objective.
    Illustrative embodiments can be modified for many different purposes and are not intended to be limited to the specific exemplary objectives as incorporated herein. Anyone skilled in the art is capable of adapting the purely characterizing embodiment of the present invention depending, for example, on the intended use of the modified embodiment. In addition, the examples and limitations included below are intended to be purely illustrative and not exclusive. Other limitations of the related prior art become apparent to anyone skilled in the art after reading the following specification and a study of the related figures.
    Referring to FIG. 1, a dish, generally represented by the number 100, is illustrated in accordance with an embodiment of the present invention. In one example, the dish 100 can be tableware, such as one from a plate, a bowl or a cup. In other examples, the tray 100 can be any type of heat storage device that can be used to retain the heat of the material placed thereon, as will be explained in the following paragraphs of this invention. Due to the function of the dish 100, it is preferred that the dish 100 can be made of material suitable for food, such as is obvious to anyone skilled in the art. For example, the dish 100 can be made of a ceramic material, an acrylic material, a heat-resistant glass or a heat-resistant laminated glass. In a preferred embodiment, the dish 100 is made of ceramic material. The ceramic material can comprise any fine ceramic and raw ceramic compositions such as stoneware, earthenware, glassy porcelain, porcelain as well as industrial ceramic compositions, for example ceramics with small amounts of silicon carbide, silicon nitride, aluminum oxide and zirconium oxide.
    As is apparent from FIGS. 1-3, the tray 100 generally comprises an upper portion 102, a base portion 104, and a heat storage material 106. In one example, the tray 100 may be substantially circular due to the geometry of the upper portion 102. In FIG. In some examples, the dish 100 may also have other shapes, such as, elliptical, square, rectangular, or any other suitable polygonal shape. Furthermore, in the present example, it can be seen that the thickness and other dimensions of the tray 100 are generally equivalent to the dimensions of the upper portion 102, which in turn may be based on various factors such as the heating requirement and other specifications those from the dish 100 are required. FIG. 4 illustrates a cross-sectional side view of the upper portion 102 according to an embodiment of the present invention. In the illustrated example, the upper portion 102 is shown as a monolith structure. As illustrated, the upper portion 102 may include an upper surface 108 and a lower surface 110. The upper surface 108 and the lower surface 110 form the two opposite surfaces of the upper portion 102, an edge 112 running along the periphery of the upper portion 102 to connect the two surfaces. In general, the upper surface 108 and the lower surface 110 may have a similar cross-sectional profile, as shown in FIG. 4.
    In one example, the upper surface 108, of the upper portion 102, provides a cross section 114 also shown in FIG. 1) which may be in the form of a well or a cavity in the upper portion 102. It may be said that the cross-section 114 includes an outboard 116 extending inclined outward in a radial direction "R" along the upper surface 108 of the dish 100, and thereby define a portion portion 118 in the top surface 108. The portion portion 118 is used to receive food on the dish 100. A depth of the cross-section 114 can be appropriately formed according to the uses of the tray 100. For example, the cross-section 114 can be deeper if the tray 100 is to include liquid or semi-liquid food; otherwise, the cross section 114 may be formed with a relatively smaller depth if the dish 100 is only required to include solid food.
    In one example, the bottom surface 110 provides a central portion 120. In the illustrated example, the central portion 120 is shown as an inverted cup. The central portion 120 may comprise a portion of substantially constant thickness 122 and a portion of increasing thickness 124. Generally, the portion of substantially constant thickness 122 may be the area just below the cross-section 114. In one example, the portion of substantially constant thickness 122 may have the same profile as the portion region 118, of the cross-section 114, above it. For example, both the portion region 118 formed in the upper surface 108 and the portion of substantially constant thickness 122 provided in the lower surface 110 may be substantially circular. The portion of increasing thickness 124 may extend outwardly from the portion of substantially constant thickness 122 in the radial direction "R". The arc length of the portion of increasing thickness 124 can be clearly smaller than the horizontal length of the portion of substantially constant thickness 122, i.e., by comparison.
    The lower surface 110 may further comprise a collar 126 extending perpendicularly in a direction away from the upper surface 108. The collar 126 may extend in a direction orthogonal to the radial direction "R". It can be seen that the edge 126 limits the central portion 120 in the lower surface 110. For this purpose, the profile of the edge 12 may correspond to the profile of the central portion 120, or specifically to the profile of the portion of increasing thickness 124 of the central portion 120. In the present example, the edge 126 may be annular. The collar 126 can define a free end 128 on which the tray 100 can be supported over a flat surface "P", such as a tabletop or the like.
    In one embodiment of the present invention, the bottom surface 110 may include an abutment zone 130. The abutment zone 130 can be provided between the central portion 120 and the edge 126, in the bottom surface 110. The abutment zone 130 can be provided in the direction of an inside in the radial direction "R" along the bottom surface 110. The abutment zone 130 can be extend along a perimeter of the central portion 120. It can be seen in the illustration of FIG. 4 that the abutment zone 130 is provided adjacent to the portion of increasing thickness 124 that at least partially defines a contact area between the central portion and the abutment zone, in the lower surface 110 of the tray 100. In one example, the abutment zone 130 may be in the form of a substantially 1-shaped hook. Further, in one example, the abutment zone 130 may have an inner curved profile 132 formed in the radial direction "R" along the lower surface 110. FIG. 5 illustrates a planar side view of the base portion 104. The base portion 104 may be a substantially flat element with an upper surface 134 and a lower surface 136, and an edge 138 extending along its periphery. The edge 138 may have an outer curved profile 140 corresponding to the inner curved profile 132 of the abutment zone 130. In the dish 100 of the present invention, as more clearly illustrated in FIG. 2, the base portion 104 at the top portion 102 is attached to the abutment zone 130. By the corresponding outer curved profile 140 of the edge 138, of the base portion 104, and the inner curved profile 132 of the abutment zone 130, the base portion 104 can be provided in the abutment zone 130 with which it can be attached. In one example, the base portion 104 can be attached to the top portion 102 for forming the tray 100 by means of certain adhesives. The adhesive may be of the thermal bonding type comprising various materials by heat, such as, but not limited to, epoxy, silicon, polyurethane, cyanoacrylate, and acrylic polymers. In one example, the adhesive can withstand up to 220 ° C at low moisture levels, for example in the case of high heating requirements; and up to 70 ° C at 100% humidity, for example, when the dish 100 is washed in the presence of detergents. In other examples, the base portion 104 may be attached to the top portion 102 by spot welding, friction welding; laser welding, ultrasonic welding, or other similar techniques known in the art.
    Referring again to FIGURES 2-3, the base portion 104 defines an inner space (not labeled) with the upper portion 102. The inner space may be in the form of a substantially rectangular cavity provided between the upper portion 102 and the base portion 104, in the tray 100. Specifically hanging as illustrated in FIG. 4, the profile of the inner space away from the portion of substantially constant thickness 122, the portion of increasing thickness 124, from the upper portion 102, and the upper surface 134, from the base portion 104, which form the edges thereof. The inner space can be at least partially filled with a latent heat storage material 106. The inner space can have a suitable height or width to receive a required mass of the latent heat storage material 106 in order to obtain a required heat storage capacity for the dish for the purpose of application of it. In general, the inner space is completely closed and filled with the latent heat storage material 106 during the production of the tray 100. Because the base portion 104 is sealed with the upper portion 102, the inner space can be leak tight to allow filling of the latent heat storage material 106. In one example, the latent heat storage material 106 of a predetermined mass is encapsulated in a heat pack 142 in accordance with the shape of the inner space. The volume of the heat pack 142 is generally smaller than the volume of the inner space of the tray 100 to keep the latent heat storage material 106 compact and in place in the inner cavity. The heat pack 142 is shown in more detail in FIG. 3, and may be formed from a thin flexible web of, for example, PVC. The heat pack 142 may be able to withstand a heat load of up to 220 ° C. In some examples, the heat suit 142 can be sealed in the interior by means of a suitable adhesive, for example epoxy resin, provided around the edge of the heat suit 142.
    The latent heat storage material 106 of the present invention is defined as a material that can absorb, store and release an amount of energy over a longer period of time. In one example, the latent heat or cold storage process can be obtained by a phase change material (PCM) that changes from a solid to solid, solid to liquid, solid to gas and liquid to gas once the material has been subjected to a certain temperature. Moreover, this process can be repeatedly achieved by obtaining said temperature of the phase change material. The PCM can, for example, hydrated salts such as Na 2 SO 4 - 10H 2 O, glycols such as polyethylene glycol, paraffin such as octadecane, n-paraffins, sugar alcohols or fatty acids; paraffin mixed with hydrophobic silica, non-paraffin organic compounds such as lauric acid, fatty acids, esters, silica gel or dry powder, eutectic solutions, ionic solutions or a combination thereof. To ensure different storage and release of heat and cold properties that would be suitable for different types of application of the tray 100, the latent heat storage material 106 covers a temperature range of -40 ° C to + 180 ° C, with the present The latent heat storage material 106 with a phase change temperature between 50 ° C and 85 ° C is preferred. In some examples, the latent heat storage material 106 may exist in gas form, such as, but not limited to, helium gas.
    Because the latent heat storage material 106 undergoes multiple temperature changes due to repeated heating and cooling, it sometimes experiences cracks or deformations during heating and / or cooling, especially during periods of phase change. To overcome this problem, the latent heat storage material 106 may desirably comprise a reinforcing element (not shown) formed in this form. The reinforcement element provides structural support to the layer of latent heat-storage material 106 to prevent the latent heat-storage material 106 from deforming and / or disintegrating due to the mechanical stresses resulting from heating and cooling and undergoing multiple phase changes. The reinforcing element can be partially or completely formed in the layer of the latent heat storage material 106. The reinforcing element can be a screen, grid, mesh or bars. If the reinforcing element is a grid or mesh, it may be formed from temperature-resistant synthetic, natural, or glass fibers or polytetrafluoroethylene (PTFE) or metal. In other examples, the reinforcement element 38 may be a mesh formed from cotton fiber because cotton fiber can withstand high temperatures without burning.
    In a characterizing embodiment, the contact area has a minimum radius of curvature of at least 2 mm when measured in the radial direction "R" along the lower surface surface 110. It is also preferred that the abutment zone also has a minimum radius of curvature of at least 2 mm, when measured in the radial direction "R" along the bottom surface 110. Further, in one example, the radius of curvature of the portion of increasing thickness 124 may be greater than the radius of curvature of the abutment zone 130, or specifically the radius of curvature of the inner curved profile 132 of the abutment zone 130. In addition, the edge 126 can further define an arc 144 to the inside of the lower surface 110. As illustrated in FIG. 4, the arc 144 can be formed adjacent to the abutment zone 130 and the free end 128. In one example, the arc 144 can also have a small curved profile in the radial direction "R" along the lower surface 110. The curved profile of the arc 144 may have the same curvature radius as the curvature radius of the increasing thickness portion 124. In one example, as illustrated in FIG. 3, the tray 100 may also include an insulating layer 146 attached to the lower surface 136 of the base portion 104. In some examples, the insulating layer 146 may extend further to the lower surface 110 of the upper portion 102, not shown in any of the drawings.
    In some examples, the dish 100 may include one or more handles. Any number of different handles can be used without affecting the heat distribution provided by the latent heat storage material 106. Placing handles helps balance and transport the tray 100, and can also provide an aesthetic and functional use. Furthermore, in some examples, the bottom surface 136 of the base portion 104 may be twisted or have a different shape to increase the volume of the interior space, and thus to obtain an increased heat storage capacity of the tray 100. In some examples, the tray 100 may further be provided with a portable, battery-driven heating unit (not shown) that may be attached to the bottom surface 136 of the base portion 104. Anyone skilled in the art will recognize that such a configuration charge of the latent heat storage material 106 when required. The tray 100 of the present invention can include various other optional features such as, for example, scratch resistance, or anti-stick or anti-stain, or diamond powder coatings on the top surface 108, etc.
    In one example, the tray 100 of the present invention has a radius of about 200 to 400 mm, and preferably between 250 and 300 mm, and more preferably 275 mm. Furthermore, the radius of the annular edge 126 is in the range of about 150 to 250 mm, and preferably between 180 and 200 mm, and more preferably 190 mm. In the same configuration, the radius at the abutment zone is approximately 180 mm. Furthermore, the tray 100 has a height in the range of 20 to 40 mm, and preferably between 25 and 30 mm, and more preferably 28.5 mm. Furthermore, with its falling wall, the cross-section 114 can have a depth of about 10 mm. In such a configuration, the thickness of the tray 100 at the portion of substantially constant thickness 122 is approximately 4 mm.
    Further, the height of the dish 100 at the portion of substantially constant thickness 122 above the horizontal plane "P", defined as the first height, is about 14 mm; and the height of an upper edge of the abutment zone 130 above the horizontal plane "P", defined as a second height, is about 7 mm. It is clear that the first height is greater than the second height, which means that the abutment zone 130 is below the portion of substantially constant thickness 122. With these dimensions it can be calculated that the height of the inner space is approximately 7 mm. It is to be noted that the stated dimensions are merely characterizing and should not be construed as limiting in any way, and furthermore, the dish 100 can be produced in various dimensions and shapes without departing from the object of the present invention. FIG. 6 illustrates a flow chart illustrating the various steps involved in a method 600 for producing the tray 100. In step 602, the method 600 comprises preparing a first mold (shown in FIG. 7 and designated by the number 700) for casting the upper portion 102. The first mold 700 may have an inner cavity 702. The inner cavity 702 defines counter surfaces 704, 706 corresponding to the abutment zone 130 and the increasing thickness portion 124 for the upper portion 102. Specifically, the counter surface 704 corresponds to the inner curved profile 132 of the abutment zone 130. Further, the mold 700 comprises a port channel 708 to allow casting of the molten or powdered ceramic material for casting the upper portion 102. In step 604, the method 600 includes preparing a second mold (shown in FIG. 8 and designated by the number 800) for casting the base portion 104. As with the first mold 700, the second mold 800 may have an inner cavity 802 defining a counter surface 804 corresponding to the outer curved profile 140 for the base portion 104. As previously described, the outer curved profile 140 corresponds to the abutment zone 130, or specifically to the inner curved profile 132 of the abutment zone 130. Further, the mold includes 800 a port channel 806 to allow casting of the molten or powdered ceramic material for casting the base portion 104. It is clear that the molds 700, 800 may have appropriate tolerances for proper molding of the parts, such as the inner curved profile 132 and the outer curved profile 140, of the upper portion 102 and the base portion 104.
    In step 606, the method 600 includes separately casting the upper portion 102 and the base portion 104 of the tray 100. In one example, the casting of the parts 102, 104 can be performed by isostatic printing technique. It should be noted that the mold for casting the upper portion 102 is designed to include a corresponding counterpart to provide the abutment zone 130 and other features of the upper portion 102. In some examples, the method 600 may include making the castings of the parts 102, 104 to undergo, to smoothen, a process that includes brushing and sandblasting the edges to eliminate the rough edges. In step 608, the method 600 includes baking the castings of the parts 102, 104, or, in other words, baking the parts 102, 104 at a temperature of about 1000 ° C. This step ensures that baked castings from the parts 102, 104 are available with an initial strength but still porous enough to absorb enamel, as will be described later. In step 610, the method 600 includes applying the glaze to the baked castings of the parts 102, 104 by immersion technique, as is well known in the art. In step 612, the method 600 further comprises baking the glazed castings of the parts 102, 104 at a temperature of about 1400 ° C. This step ensures that the ceramic powdered material used for casting is completely converted to porcelain. In some examples, the method 600 further comprises grinding and polishing the glazed parts 102, 104 obtained.
    Once the upper portion 102 and the base portion 104 are formed separately, in step 614, the method 600 includes providing the latent heat storage material 106. The latent heat storage material 106, encapsulated in the heat pack 142, may temporarily support against the portion of substantially constant thickness 122 and between the edges of the portion with increasing thickness 124. In step 616, the method 600 includes gluing the base portion 104 to the top portion 102 to the abutment zone 130, trapping the latent heat storage material 106 in the interior of the tray 100. Industrial applicability
    The present invention relates to a tray 100 with the latent heat storage material 106 disposed in an interior space. To produce the tray 100 of the present invention, it is necessary to fill the inner space with the latent heat storage material 106. To achieve this, the tray 100 is produced as two separate pieces, the upper portion 102 and the base portion 104, which are joined together glued after applying the latent heat storage material 106.
    These dishes are generally produced with ceramic and glass-based materials. It is known that glass-ceramic products can be made by producing molten glass from glass-forming constituents, or pieces of glass, including a nucleating agent, shaping the molten glass into a desired shape, for example by pressing it into plates, and then reheating the formed glass mold at a temperature at which crystallization occurs. Because ceramic materials tend to shrink during the baking production step, the dimensions of the tray and more particularly of the contact zone where the two separate parts are to be glued together are difficult to control. When gluing both parts together, however, a perfectly sealed connection must be obtained to prevent the heat storage material from flowing away during heating of the tray.
    For example, in the '195 publication, the cross-sectional dimension of the upper portion of the ceramic plate exhibits sharp variations in thickness. It can be stated that during production of such a ceramic plate, the plate can deform in the zone or sharp thickness variations, because the ceramic material becomes dry and cured during the baking step. As a result, the connection between the upper part and the lower part cannot be properly accomplished unless the ceramic plate is heavily over-dimensioned to compensate for the deformation, which in turn increases the weight of the plate and / or the volume of the void that results in a loss of storage space for the PCM material that affects the heat storage capacity of the plate.
    The present invention solves this problem by adjusting the curvature of the tray 100 at the contact position, ie the abutment zone 130 between the upper portion 102 and the base portion 104. The tray 100 provides a curved profile 132 to the abutment zone 130 that allows compensation by shrinking during production, thereby increasing dimensional stability to a level that allows industrial production of the trays, such as the tray 100 of the present invention. The abutment zone 130 of the upper portion 102 is shaped such that the upper portion 102 does not lose its round shape, so that the narrow contact zone provided by the abutment zone 130 remains stable, even after the baking production step. This allows proper contact and gluing of the base portion 104 with the top portion 102 of the dish 100, so that a good connection can be obtained between the two parts.
    Referring to FIG. 6, methodology according to a preferred embodiment of the claimed subject matter is illustrated. Although the methodology has been presented and described as a series of actions to simplify the explanation, it should be stated and acknowledged that the claimed subject matter is not limited to the sequence of the actions, since some actions can be performed in different sequences and / or simultaneously with others acts other than those described herein. For example, anyone skilled in the art understands and recognizes that a methodology can also be represented as a series of interrelated states or events, such as in a state diagram. In addition, not all illustrated actions may be required to perform a methodology according to the claimed subject matter.
    Throughout the specifications of the present invention, the term "comprising" means "including," but not necessarily the exclusion of other elements or steps. In other words, the term including indicates an open list. Furthermore, all guiding references (such as, but not limited to, upper, lower, inner, outer, up, down, in, out, right, left, right, left, inside, outside, top, bottom, top) (bottom, vertical, horizontal, clockwise, counterclockwise, linear, axial and / or radial, or any other directional and / or similar reference) used for identification purposes only to to help improve the reader in illustrative embodiments of the present invention, and should not constitute any limitation, especially as regards position, orientation or use, unless specifically stated in the claims. Moreover, all guiding references are approximate and should not be interpreted as being exact, but rather as the description of a general indicator of an approximate position.
    Similarly, aggregation references (such as, but not limited to, confirmed, linked, connected, recorded, and the like and their derivations) should be broadly interpreted and may include intermediate elements between a connection of segments and relative movement between segments. As such, merge references do not necessarily mean that two segments are directly connected and in fixed relationship with each other.
    In some cases, components are described with reference to "ends" that include a specific feature and / or are connected to another part. However, anyone skilled in the art will recognize that the present invention is not limited to components that end immediately after their junctions with other parts. The term "end" should therefore be interpreted broadly, in a manner that includes regions adjacent, backward, forward, or otherwise near the end of a specific segment, connection, component, part, element, or the like. Additionally, all numerical terms, such as, but not limited to, "second", "second", "third", "fourth", or any other ordinal and / or numerical term, are to be used solely as an identifier for the understanding of to help improve the reader in the various embodiments, variations and / or modifications of the present invention, and should not constitute a limitation, specifically as to the order, or preference, of an embodiment, variation and / or modification relative to, or above, another embodiment, variation and / or modification. As is apparent to anyone skilled in the art, the present invention can be easily produced in other specific forms without departing from its essential characteristics. The present embodiment is, therefore, to be regarded as merely illustrative and not restrictive, the object of the invention being indicated by the claims instead of by the foregoing description, and any changes thereto are to be included therein. Many variations, modifications, additions and improvements are possible. More generally, embodiments of the present invention have been described in the context of the preferred embodiments. In various embodiments of the invention, functionalities can be separated or combined in various ways in procedures or described with different terminology. These and other variations, modifications, additions, and improvements may fall within the object of the invention as defined in the appended claims.
    权利要求:
    Claims (14)
    [1]
    CONCLUSIONS
    A dish comprising: an upper portion comprising: an upper surface defining a cross-section for receiving food; a lower surface, opposite the upper surface, comprising: a central portion; a collar projecting in a direction away from the upper surface to support the dish over a horizontal plane, the collar limiting the central portion; and an abutment zone provided between the central portion and the edge; and a contact area between the bottom surface of the central portion and the abutment zone; and a base portion attached in a sealing manner to the top portion at the abutment zone, wherein the base portion defines an interior space with the top portion, and further wherein the interior space is at least partially filled with a latent heat storage material; characterized in that, when measured in the radial direction along the lower surface, the contact area between the central portion and the abutment zone has a minimum curvature radius of at least 2 mm.
    [2]
    The dish of claim 1, wherein the central portion comprises a portion of substantially constant thickness and a portion with increasing thickness that extends into the contact area.
    [3]
    The dish of claim 1, wherein the collar defines an arc toward the inside in the radial direction along the bottom surface adjacent to the abutment zone.
    [4]
    The dish of claim 1, wherein the top portion and the base portion are attached to each other, along the abutment zone, by means of an adhesive.
    [5]
    The dish of claim 1, wherein the base portion is substantially flat.
    [6]
    The dish of claim 1, further comprising an insulating layer attached to a bottom surface of the base portion.
    [7]
    The dish of claim 1 which is tableware selected from one of a plate, a bowl or a cup.
    [8]
    Dish according to claim 1, made from ceramic material, porcelain material, acrylic material, heat-resistant glass or heat-resistant laminated glass.
    [9]
    Dish according to claim 1, wherein the inner space has a height in the range of 5 to 15 mm, preferably from 5 to 10 mm.
    [10]
    The dish of claim 1, wherein the top portion and the base portion have a thickness in the range of 1 to 5 mm, and preferably 3 to 4 mm.
    [11]
    The dish of claim 1, wherein the latent heat storage material of a predetermined mass is encapsulated in a heat suit in accordance with a shape of the interior space.
    [12]
    A method for producing a dish, comprising: preparing a first mold for casting an upper portion, the first mold comprising an inner cavity defining a counter surface corresponding to an abutment zone for the upper portion, so that the abutment zone has a radius of curvature has at least 2 mm; preparing a second mold for casting a base portion, the second mold comprising an inner cavity defining a counter surface corresponding to an outer curved profile for the base portion, the outer curved profile in turn corresponding to the abutment zone; preparing castings from the top portion and the base portion with the first mold and the second mold, respectively; baking the castings from the top portion and the base portion to obtain baked castings from the top portion and the base portion; applying glaze to the baked castings of the upper portion and the base portion to obtain glazed castings; baking the glazed castings of the top portion and the base portion; providing a latent heat storage material along a lower surface of the upper portion; and gluing the base portion to the top portion to the abutment zone, so that the latent heat storage material is trapped in an interior space between the top portion and the base portion.
    [13]
    The method of claim 12, wherein the castings of the upper portion and the base portion are prepared by isostatic printing technique.
    [14]
    The method of claim 12, wherein the latent heat storage material encapsulated in a heat suit is provided.
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    同族专利:
    公开号 | 公开日
    BE1023979B9|2017-10-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2404609A1|1977-09-28|1979-04-27|Basset Bretagne Loire|Isostatic pressing of white-ware - using a mould with a rigid inner mould and a flexible, outer membrane|
    WO2006101643A1|2005-03-18|2006-09-28|Ramirez, Juan|Integrated microwaveable heat storage device|
    DE202005014162U1|2005-09-08|2006-02-16|Gömmer, Stefan|Presentation plate for cooled food, has base and recess formed in base, where plate is made of ceramic material and cooling pad is put inside of recess in such manner that pad contacts plate directly|
    WO2011066618A1|2009-12-02|2011-06-09|Karen Shema Powell|A ceramic ware|
    WO2012176121A1|2011-06-20|2012-12-27|Marcato Roberto|Thermo plate|
    EP2829202A1|2013-07-23|2015-01-28|Probalco bvba|Plate for serving hot meals thereon|
    法律状态:
    2018-01-10| FG| Patent granted|Effective date: 20170928 |
    优先权:
    申请号 | 申请日 | 专利标题
    BE20160119A|BE1023979B9|2016-06-30|2016-06-30|A DISH FOR SERVING FOOD AND A METHOD FOR PRODUCING IT|BE20160119A| BE1023979B9|2016-06-30|2016-06-30|A DISH FOR SERVING FOOD AND A METHOD FOR PRODUCING IT|
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