JP6046453B2 - Insulated box, method for manufacturing the same, and device equipped with the same - Google Patents

Description

  The present invention relates to a heat insulating box, a method for manufacturing the same, and a device including the same.

  As the heat insulating box, a heat insulating box for a refrigerator described in JP 2010-169302 A (hereinafter referred to as Patent Document 1) and a heat insulating body described in JP 2006-242497 A (hereinafter referred to as Patent Document 2). And a heat insulating box for a refrigerator described in Japanese Patent Application Laid-Open No. 2004-52774 (hereinafter referred to as Patent Document 3) and a heat insulating material described in Japanese Patent Application Laid-Open No. 60-146994 (hereinafter referred to as Patent Document 4). Are known.

  The heat insulating box is formed by bonding a heat insulating material to an inner box or an outer box and filling a space between the inner box and the outer box with a foam heat insulating material. The inner box or the outer box to which the heat insulating material is bonded is formed by a metal material plate.

  As in the heat insulating box described in Patent Document 1, in many heat insulating bodies, a metallic plate material and a heat insulating material are bonded together by a hot melt adhesive.

  In the heat insulating body described in Patent Document 2, a water-based adhesive is uniformly applied by a roll coater to the vapor deposition film side of the vacuum heat insulating material, and the vacuum heat insulating material is bonded to an iron plate forming an inner box or an outer box.

  In the heat insulating box described in Patent Document 3, a vacuum heat insulating material is fixed to an outer box obtained by press-molding an iron plate with a thermoplastic gel-like hot melt adhesive. The adhesive is uniformly and thoroughly applied to the surface of the vacuum heat insulating material that is bonded to the outer box using a roller or the like.

  By the way, when a foam heat insulating material penetrates into a cavity which is an unbonded portion between the heat insulating material and the metal plate, the heat insulating material falls off or is distorted. Thereby, the situation where the heat insulation performance distribution varies, or the situation where the appearance of the heat insulator deteriorates occurs.

  Therefore, in the heat insulating body described in Patent Document 4, by injecting a soft material between the metal plate and the vacuum heat insulating material, foam insulation is formed in a cavity that is an unbonded portion between the metal plate and the heat insulating material pack. The material is prevented from entering.

JP 2010-169302 A JP 2006-242497 A JP 2004-52774 A JP 60-146994 A

  However, in the heat insulating body described in Patent Document 2 and the heat insulating box described in Patent Document 3, an adhesive is uniformly applied to the surface of the vacuum heat insulating material that is bonded to the steel plate. Therefore, in the vicinity of the outer edge of the heat insulating material, the adhesion between the heat insulating material and the metal plate is easily peeled off, and the foamed heat insulating material may invade into such an unbonded portion. Moreover, in the heat insulating body described in Patent Document 4, there is an extra process for interposing a soft material between the metal plate and the vacuum heat insulating material even though deterioration of the appearance of the heat insulating body can be prevented. Has occurred.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a heat insulating box that can prevent the appearance from being deteriorated without generating an extra step during manufacturing, a method for manufacturing the same, and a device including the same.

  The heat insulation box according to the present invention includes an inner box, an outer box, a heat insulating material, and a foam heat insulating material. The heat insulating material has a first outer edge and a second outer edge facing each other. The foam heat insulating material is filled in a space formed by the inner box and the outer box. One of the inner box and the outer box is a plate formed of a metallic material.

  The surface of the heat insulating material that is bonded to the plate has an adhesive region to which an adhesive is applied. In the adhesion region, the first region in the vicinity of the first outer edge and the second region in the vicinity of the second outer edge are more firmly bonded to the plate than the third region other than the first region and the second region.

  In the heat insulation box according to the present invention, the first region and the second region of the heat insulating material are bonded to the plate more firmly than the third region. Thereby, a heat insulating material can be made hard to peel from a board. Therefore, deterioration of the appearance of the heat insulation box can be prevented.

  Thus, in order to make it difficult to bond the heat insulating material and the plate, an adhesive may be applied to the first region and the second region in the heat insulating material bonding region so as to be different from the third region. That is, in the heat insulation box according to the present invention, it is possible to prevent the appearance of the heat insulation box from deteriorating without requiring another extra step only by devising the application of the adhesive in the bonding region. .

  By doing in this way, the heat insulation box which can prevent the deterioration of an external appearance, without generating an extra process at the time of manufacture can be provided.

  It is preferable that the apparatus according to this invention is equipped with the said heat insulation box. In the equipment provided with the heat insulation box, the appearance of the heat insulation box is deteriorated only by devising the application of an adhesive for bonding the heat insulating material and the plate, without requiring another extra step. Can be prevented.

  The manufacturing method of the heat insulation box according to this invention is a manufacturing method of the heat insulation box provided with the inner box, the outer box, the heat insulating material, and the foam heat insulating material. The heat insulating material has a first outer edge and a second outer edge facing each other. The foam heat insulating material is filled in a space formed by the inner box and the outer box. One of the inner box and the outer box is a plate formed of a metallic material.

  Moreover, the manufacturing method of the heat insulation box according to this invention is equipped with a 1st process, a 2nd process, a 3rd process, and a 4th process. The first step is a step of joining the inner box and the outer box. In the second step, the first region in the vicinity of the first outer edge and the second region in the vicinity of the second outer edge on the surface of the heat insulating material bonded to the plate are other than the first region and the second region. This is a step of applying an adhesive to the heat insulating material so that it is more firmly bonded to the plate than the third region. A 3rd process is a process of adhere | attaching the heat insulating material with which the adhesive agent was apply | coated to a board. A 4th process is a process of throwing a foam heat insulating material into the space between an inner box and an outer box along the direction which goes to a 2nd outer edge from a 1st outer edge.

  As described above, in order to make it difficult to remove the bond between the heat insulating material and the plate, the first region and the second region in the bonding region of the heat insulating material are different from the third region when the adhesive is applied. An adhesive may be applied. That is, according to the manufacturing method of the heat insulation box according to the present invention, the appearance of the heat insulation box is prevented from deteriorating without requiring another extra step only by devising the method of applying the adhesive. be able to.

  As described above, according to the present invention, it is possible to provide a heat insulating box that can prevent deterioration of the appearance without generating an extra step during manufacturing, a method for manufacturing the same, and a device including the same. Can do.

It is sectional drawing which shows roughly the structure which looked at the refrigerator as an example of the apparatus provided with the heat insulation box according to this invention from the front. It is sectional drawing which shows roughly the structure which looked at the refrigerator provided with the heat insulation box according to this invention from the right side surface. It is a figure which shows roughly an example of the method of apply | coating an adhesive agent to the vacuum heat insulating material arrange | positioned at the left side of a refrigerator provided with the heat insulation box according to this invention, a ceiling surface, and a right side. It is a figure which shows roughly an example of the method of apply | coating an adhesive agent to the vacuum heat insulating material arrange | positioned at the back surface of the refrigerator provided with the heat insulation box according to this invention. It is a perspective view which shows the whole washing-drying machine as an example of the apparatus provided with the heat insulation box according to this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In FIG. 1, the refrigerator 100 as an example of the household appliances provided with the heat insulation box 1 according to this invention is shown. As shown in FIG. 1, the heat insulating box 1 includes an outer box 21, an inner box 22, and a vacuum heat insulating material 30. By joining the outer box 21 and the inner box 22, a space is formed between the outer box 21 and the inner box 22. The outer box 21 is a plate material obtained by press-molding a plate containing a metallic material such as iron. The inner box 22 is formed by vacuum molding a resin material such as ABS resin.

  A space formed by the outer box 21 and the inner box 22 is filled with a foam heat insulating material 23. As the foam heat insulating material 23, a general foam heat insulating material such as urethane foam, which is polymerized while foaming by adding a foaming agent to isocyanate and polyol, for example, is used.

  In the heat insulating box 1, the vacuum heat insulating material 30 is bonded to the outer box 21. The hot melt adhesive used for bonding contains a thermoplastic component. The vacuum heat insulating material 30 is bonded to the outer box 21 such that the flat portion of the vacuum heat insulating material 30 faces the inner surface of the outer box 21. On the left side surface, the ceiling surface, and the right side surface of the refrigerator 100, a folded sheet-like vacuum heat insulating material 30 is bonded to the outer box 21. A part of the vacuum heat insulating material 30 positioned on the left side surface of the refrigerator 100 is referred to as the left side portion 31, and a part of the vacuum heat insulating material 30 positioned on the ceiling surface is referred to as the ceiling portion 32, and the vacuum heat insulating material 30 positioned on the right side surface. Is called the right side 33.

  FIG. 2 is a cross-sectional view schematically showing the configuration of the refrigerator 100 as viewed from the right side. As shown in FIG. 2, a back surface portion 34 is bonded to the outer box 21 in the heat insulating box 1 as the vacuum heat insulating material 30 located on the back surface of the refrigerator 100.

  Resinous joining members 24 and 25 are used for joining the outer box 21 and the inner box 22. The inside of the heat insulation box 1 is partitioned into a plurality of spaces as storage rooms by a partition plate 3c. A damper 8 is attached to the partition plate 3c. The upper space is the refrigerator compartment 2a, and the lower space is the freezer compartment 2b. In addition, the number and position of the storage chambers of the refrigerator 100 are not particularly limited.

  A machine room 2 c is formed inside the refrigerator 100. The machine room 2 c is disposed in the lower part on the back side of the refrigerator 100. A compressor 4 is disposed in the machine room 2c. A refrigerant pipe 9 is connected to the compressor 4. A refrigerant is sealed in the refrigerant pipe 9. The refrigeration cycle is formed in the refrigerator 100 by connecting the compressor 4, the condenser 5, the capillary tube 6, and the evaporator 7 by the refrigerant pipe. In addition, the refrigerant | coolant piping 9 is installed not only in the back side of the refrigerator 100 but in another part (not shown).

  Cold air is supplied from the evaporator 7 to the freezer compartment 2b. The interior of the refrigerator 100 is configured so that cold air can move between the freezer compartment 2b and the refrigerator compartment 2a. In addition, although not shown in figure, other evaporators may be arrange | positioned in the position facing the refrigerator compartment 2a other than the evaporator 7. FIG.

  Doors 3 a and 3 b are attached to the refrigerator 100. The door 3a and the door 3b open and close the refrigerator compartment 2a and the freezer compartment 2b, respectively. The number of doors can be appropriately set according to the number of storage rooms. A vacuum heat insulating material 30 is also arranged inside the doors 3a and 3b. Inside the doors 3a and 3b, a space excluding the vacuum heat insulating material 30 is filled with a foam heat insulating material 23.

  In the vacuum heat insulating material 30, a core material is accommodated in a gas barrier outer packaging material having a rectangular parallelepiped shape and formed in a bag shape. Before the core material is filled into the outer packaging material, the outer packaging material is thermally welded on three of the four sides. The remaining one-side heat-welded portion is heat-welded in a reduced pressure state after the core material is filled.

  The core material is configured by laminating a plurality of nonwoven fabrics. Each nonwoven fabric is produced by a papermaking method using glass fibers which are an example of inorganic fibers and a small amount of an organic binder. An inorganic binder can also be used for the binder.

  The nonwoven fabric of the core material is configured to include at least a plurality of inorganic fibers manufactured by a continuous filament method. As a nonwoven fabric, the thing formed with the glass fiber manufactured by the continuous filament method, or the thing formed with glass wool can be used. Furthermore, examples of the inorganic fiber include glass fiber, ceramic fiber, rock wool fiber, and the like.

  As an example of a specific configuration of the outer packaging material, the outermost layer is made of polyethylene terephthalate (PET) resin, the intermediate layer is made of an ethylene-vinyl alcohol copolymer resin having an aluminum vapor deposition layer, and the innermost layer is made of a linear low Gas barrier film using high-density polyethylene resin (LLDPE), nylon as the outermost layer, two layers of aluminum-deposited PET resin and aluminum foil as the intermediate layer, and linear low-density polyethylene resin (LLDPE) as the innermost layer Examples thereof include a gas barrier film. The heat welding part is formed in a part of the innermost layer.

  As the outer packaging material, nylon may be used for the outermost layer, two layers of aluminum-deposited PET resin and aluminum foil may be used for the intermediate layer, and two types of polyethylene resins may be used for the innermost layer. The polyethylene resin used for the innermost layer may be a polypropylene resin or high density polyethylene (HDPE).

  In order to maintain the initial heat insulation performance and the temporal heat insulation performance of the vacuum heat insulating material 30, it is preferable to use an adsorbent such as a gas adsorbent or a moisture adsorbent in the vacuum heat insulating material 30. As the adsorbent, it is preferable to use a material containing calcium oxide (CaO) as a component. The adsorbent is disposed in the vicinity of the heat welding portion that is heat-welded after being in a reduced pressure state. However, the adsorbent may be disposed at another position inside the outer packaging material.

  As described above, the non-woven fabric is laminated to form the core material, and the core material is placed inside the outer packaging material, and is decompressed and sealed to form the vacuum heat insulating material 30.

  Next, a method for applying an adhesive to the vacuum heat insulating material 30 in the method for manufacturing the heat insulating box 1 will be described.

  The manufacturing method of the heat insulation box 1 is provided with the following 1st processes, 2nd processes, 3rd processes, and 4th processes. As will be described later, the order of the first step, the second step, the third step, and the fourth step is that the third step is performed after the second step. There is no particular limitation.

  The first step is a step of joining the inner box 22 and the outer box 21 together. As described above, the outer box 21 and the inner box 22 are joined via the resinous joining members 24 and 25. The second step is a step of applying an adhesive to the vacuum heat insulating material 30. The third step is a step of bonding the vacuum heat insulating material 30 coated with an adhesive to the outer box 21. The fourth step is a step in which the foam heat insulating material 23 is put into the space between the inner box 22 and the outer box 21.

  FIG. 3 is a diagram schematically showing an example of a method of applying an adhesive to the flat portion of the vacuum heat insulating material 30. As shown in FIG. 3, the sheet-like vacuum heat insulating material 30 includes a left side portion 31, a ceiling portion 32, and a right side portion 33 arranged on the left side, the ceiling surface, and the right side of the refrigerator 100 (see FIG. 1). Have The shape of the vacuum heat insulating material 30 shown in FIG. 3 is a shape before being bent.

  For example, a method of applying an adhesive on the left side 31 will be described. The surface of the vacuum heat insulating material 30 that is bonded to the outer box 21 (see FIG. 1) has a bonding area where an adhesive is applied. The surface of the vacuum heat insulating material 30 that is bonded to the outer box 21 is one flat surface portion of the front and back flat surface portions of the vacuum heat insulating material 30. In each of the left side portion 31, the ceiling portion 32, and the right side portion 33, the adhesive is applied linearly to substantially the whole of one flat portion of the front and back flat portions. Substantially the entire area is the bonding area.

  As shown in FIG. 3, the left side portion 31 has a first outer edge 41, a second outer edge 42, a third outer edge 43, and a fourth outer edge 44, and has a substantially rectangular shape. The first outer edge 41 and the second outer edge 42 are edges on the long side, and the third outer edge 43 and the fourth outer edge 44 are edges on the short side. In the second step, for example, the vacuum heat insulating material 30 is placed on a conveyor and then moves in a direction in which the first outer edge 41 and the second outer edge 42 extend with the third outer edge 43 as the head.

  In the adhesion region of the left side portion 31, the adhesive is applied linearly along the direction in which the first outer edge 41 and the second outer edge 42 extend. In the adhesive region, the width of the line of the adhesive 51 applied to the first region near the first outer edge 41 and the width of the line of the adhesive 52 applied to the second region near the second outer edge 42 Is larger than the line width of the adhesive 53 applied to the third region other than the first region and the second region. Thus, a larger amount of adhesive than the third region is applied to the first region and the second region.

  In this way, in the bonding region of the left side portion 31, the first region and the second region are bonded to the outer box 21 (see FIG. 1) more firmly than the third region. Note that the adhesive is also applied to the ceiling portion 32 and the right side portion 33 in the same manner as the left side portion 31.

  FIG. 4 is a diagram schematically illustrating another example of a method of applying an adhesive to the flat surface portion of the vacuum heat insulating material 30. The vacuum heat insulating material 30 shown in FIG. 4 is the back surface part 34 arrange | positioned at the back surface of the refrigerator 100 (refer FIG. 2). In the back surface portion 34, the entire flat surface portion becomes an adhesive region by applying an adhesive to the entire flat surface portion of one of the front and back flat surface portions.

  As shown in FIG. 4, the back surface portion 34 has an outer edge 45, an outer edge 46, an outer edge 47, and an outer edge 48, and has a substantially rectangular shape. The outer edge 45 and the outer edge 46 are edges on the long side, and the outer edge 47 and the outer edge 48 are edges on the short side. In the second step, the vacuum heat insulating material 30 as the back surface portion 34 is placed on a conveyor, for example, and moves in a direction in which the outer edge 45 and the outer edge 46 extend with the outer edge 47 as the head.

  In the state where the refrigerator 100 (see FIG. 1) is installed on the floor surface, the outer edge 47 of the back surface portion 34 is located at the upper part of the refrigerator 100 and the outer edge 48 is located at the lower part of the refrigerator 100. However, the outer edge 47 and the outer edge 48 may be reversed. The outer edge 45 is an example of a first outer edge or a second outer edge. When the outer edge 45 is a first outer edge, the outer edge 46 is an example of a second outer edge, and when the outer edge 45 is a second outer edge, the outer edge 46 is an example of a first outer edge.

  An adhesive 59 is applied to the entire bonding area of the back surface portion 34. However, in the bonding region, a larger amount of adhesive than the adhesive 59 applied to the entire bonding region is present in the first region near the outer edge 45 and the second region near the outer edge 46. Applied. As shown in FIG. 4, an adhesive 57 is applied to the first region in the vicinity of the outer edge 45 in addition to the adhesive 59, and an adhesive 58 in addition to the adhesive 59 is applied to the second region in the vicinity of the outer edge 46. Applied. Thus, the amount of adhesive applied to the first region and the second region in the bonding region of the back surface portion 34 is greater than the amount of adhesive applied to the third region.

  An adhesive 57 different from the adhesive 59 is applied to the first area near the outer edge 45, and an adhesive 58 different from the adhesive 59 is applied to the second area near the outer edge 46. May be. The amount of these adhesives 57 and 58 only needs to be larger than the amount of adhesive 59 applied to the third region. Also in the third region other than the first region in the vicinity of the outer edge 45 and the second region in the vicinity of the outer edge 46, the adhesive 59 is applied linearly along the direction in which the outer edge 45 and the outer edge 46 extend. May be. As described above, also in the adhesion region of the back surface portion 34, the width of the line of the adhesive applied to the first region and the second region is the same as that of the left side portion 31, the ceiling portion 32, and the right side portion 33. It may be larger than the line width of the adhesive applied to the region.

  Alternatively, the adhesive strength of these adhesives 57 and 58 other than the adhesive 59 may be larger than the adhesive strength of the adhesive 59 applied to the third region. Preferably, the adhesive strength of the adhesives 57 and 58 is at least twice that of the adhesive 59 applied to the third region.

  For example, an adhesive having an adhesive strength corresponding to the composition of the components can be prepared by changing the composition of the components in the adhesive. In this way, the adhesive applied to the first region and the second region can be obtained by separately using an adhesive having a relatively large adhesive strength and an adhesive having a relatively small adhesive strength. A difference can be made between the adhesive strength and the adhesive strength of the adhesive applied to the third region.

  Thus, also in the said adhesion | attachment area | region of the back part 34, a 1st area | region and a 2nd area | region are adhere | attached on the outer case 21 (refer FIG. 1) more firmly than a 3rd area | region.

  As described above, in the second step, the first region in the vicinity of the first outer edge 41 and the second region in the vicinity of the second outer edge 42 on the surface to be bonded to the outer box 21 of the vacuum heat insulating material 30. This is a step of applying an adhesive to the vacuum heat insulating material 30 so that the two regions are more firmly bonded to the outer box 21 (see FIG. 1) than the third region other than the first region and the second region.

  A third step as a step after the second step is a step of bonding the vacuum heat insulating material 30 coated with an adhesive to the outer box 21 (see FIG. 1). On the other hand, a 4th process is a process of throwing in the foam heat insulating material 23 (all refer FIG. 1) in the space between the inner box 22 and the outer box 21. FIG. In the fourth step, the foam insulation 23 is put into the space between the inner box 22 and the outer box 21 along the direction from the first outer edge 41 to the second outer edge 42 (see FIG. 3). The

  Note that the first step may be performed after the second step and the third step. The first step may be performed after the second step, the third step, and the fourth step. The fourth step may be performed before the second step and the third step, or may be performed after the second step and the third step.

  As described above, the heat insulating box 1 includes the inner box 22, the outer box 21, the vacuum heat insulating material 30, and the foam heat insulating material 23. For example, the vacuum heat insulating material 30 as the left side portion 31 includes a first outer edge 41 and a second outer edge 42 that face each other. The vacuum heat insulating material 30 as the back surface portion 34 has an outer edge 45 and an outer edge 46 facing each other. The foam heat insulating material 23 is filled in a space formed by the inner box 22 and the outer box 21. The outer box 21 is a plate formed of a metallic material.

  The plane part bonded to the outer box 21 of the vacuum heat insulating material 30 has an adhesive region to which an adhesive is applied. For example, in the adhesion region of the left side portion 31, the first region in the vicinity of the first outer edge 41 and the second region in the vicinity of the second outer edge 42 are stronger than the third region other than the first region and the second region. Bonded to the box 21. In the adhesion region of the back surface portion 34, the first region near the outer edge 45 and the second region near the outer edge 46 are adhered to the outer box 21 more firmly than the first region and the third region other than the second region. ing.

  In the heat insulation box 1, the first region and the second region of the vacuum heat insulating material 30 are bonded to the outer box 21 more firmly than the third region. Thereby, the adhesion between the vacuum heat insulating material 30 and the outer box 21 can be made difficult to peel off. Therefore, deterioration of the appearance of the heat insulating box 1 can be prevented.

  Thus, in order to make it difficult to peel off the adhesion between the vacuum heat insulating material 30 and the outer box 21, the first region and the second region in the bonding region of the vacuum heat insulating material 30 are different from the third region in the adhesive. May be applied. That is, in the heat insulation box 1, it is possible to prevent the appearance of the heat insulation box 1 from deteriorating without requiring another extra step only by devising the application of the adhesive in the bonding region.

  By doing in this way, the heat insulation box 1 which can prevent the deterioration of an external appearance, without generating an extra process at the time of manufacture can be provided.

  In the adhesion region of the vacuum heat insulating material 30, the amount of adhesive applied to the first region and the second region is larger than the amount of adhesive applied to the third region.

  Moreover, in the adhesion | attachment area | region of the vacuum heat insulating material 30, the adhesive agents 51 and 52 are attached linearly along the direction where the 1st outer edge 41 and the 2nd outer edge 42 are extended. The line width of the adhesives 51 and 52 applied to the first area and the second area is larger than the line width of the adhesive 53 applied to the third area.

  For example, in the adhesion region of the vacuum heat insulating material 30 as the back surface portion 34, the adhesive strength of the adhesives 57 and 58 applied to the first region and the second region is the adhesion of the adhesive 59 applied to the third region. Greater than strength.

  By doing so, the first region and the second region of the vacuum heat insulating material 30 are bonded to the outer box 21 more firmly than the third region.

  In the refrigerator 100 provided with the heat insulation box 1, it is possible to prevent the appearance of the heat insulation box 1 from deteriorating without requiring another extra step only by devising a method of applying an adhesive.

  In the method for manufacturing the heat insulating box 1, the first region and the second region of the vacuum heat insulating material 30 are bonded so that the first region and the second region adhere to the outer box 21 more firmly than the third region. The agent is applied. Further, in the method for manufacturing the heat insulating box 1, the foam heat insulating material 23 is thrown into the space between the inner box 22 and the outer box 21 along the direction from the first outer edge 41 to the second outer edge 42.

  The foam heat insulating material 23 is changed from a liquid state to a foam shape by introducing the foam heat insulating material 23 into the space between the inner box 22 and the outer box 21 along the direction from the first outer edge 41 to the second outer edge 42. Much of the force generated from the foam insulation 23 when changing varies along the direction from the second outer edge 42 toward the first outer edge 41 and the direction from the first outer edge 41 toward the second outer edge 42. And the second outer edge 42 act to peel the vacuum heat insulating material 30 from the outer box 21.

  However, since the adhesive is applied to the first region and the second region of the vacuum heat insulating material 30 so that the first region and the second region adhere to the outer box 21 more firmly than the third region, Even when a force that peels the vacuum heat insulating material 30 from the outer box 21 acts on the first outer edge 41 and the second outer edge 42, the vacuum heat insulating material 30 is hardly peeled off from the outer box 21. Thus, according to the manufacturing method of the heat insulation box 1, the deterioration of the external appearance of the heat insulation box 1 can be prevented.

  In the vacuum heat insulating material 30 as the back surface portion 34, most of the force generated from the foam heat insulating material 23 acts on the outer edge 45 and the outer edge 46 substantially simultaneously when the foam heat insulating material 23 changes from a liquid state to a foam shape. .

  Thus, in order to make it difficult to remove the adhesion between the vacuum heat insulating material 30 and the outer box 21, when applying an adhesive, the first region and the second region in the bonding region of the vacuum heat insulating material 30 include the first region and the second region. What is necessary is just to apply | coat an adhesive agent so that it may differ from 3 area | regions. That is, according to the manufacturing method of the heat insulation box 1, it is possible to prevent the appearance of the heat insulation box 1 from deteriorating without requiring another extra step only by devising the method of applying the adhesive. .

  By doing in this way, the heat insulation box 1 which can prevent the deterioration of an external appearance, without generating an extra process at the time of manufacture, its manufacturing method, and the refrigerator 100 provided with the same can be provided.

  In addition, the method of apply | coating the quantity of adhesives larger than a 3rd area | region to the 1st area | region and 2nd area | region in the adhesion | attachment area | region of the vacuum heat insulating material 30 may be another method. For example, in the adhesion region of the left side portion 31, the thickness of the adhesive 51 applied to the first region near the first outer edge 41 and the thickness of the adhesive 52 applied to the second region near the second outer edge 42. However, it may be larger than the thickness of the adhesive 53 applied to the third region other than the first region and the second region.

  Further, for example, in the adhesion region of the left side portion 31, the line of the adhesive 51 applied to the first region and the line of the adhesive 52 applied to the second region meander without being applied linearly. It may be applied as follows.

  Further, for example, in order to apply a larger amount of adhesive in the first region and the second region of the left side portion 31 than in the third region, the first outer edge 41 and the second outer edge 42 are respectively connected to the first line. It is not limited, You may enlarge the width | variety of a some line. Furthermore, the interval between two adjacent lines among the plurality of lines of adhesive applied to the first region and the interval between two adjacent lines among the plurality of lines of adhesive applied to the second region May be smaller than the interval between two adjacent lines of the plurality of lines of the adhesive 53 applied to the third region.

  Further, also in the left side portion 31, the ceiling portion 32, and the right side portion 33, the adhesive strength of the adhesives 51 and 52 applied to the first region and the second region is the adhesive 53 applied to the third region. It may be larger than the adhesive strength. At this time, the line width of the adhesives 51 and 52 may be smaller than the line width of the adhesive 53, or may be substantially the same as the line width of the adhesive 53.

  In the vacuum heat insulating material 30, the core material is preferably made of a relatively flexible material. In such a case, the vacuum heat insulating material 30 and the outer box 21 are easily adapted to each other via the adhesive, and the vacuum heat insulating material 30 can be effectively prevented from being peeled from the outer box 21.

  In the heat insulating box according to the present invention, the outer box may be a vacuum molded resin material. On the other hand, the inner box may be a plate material obtained by press-molding a plate containing a metallic material such as iron. In the heat insulating box according to the present invention, the heat insulating material is not limited to being bonded to the outer box, and may be bonded to the inner box as a metallic plate.

  As a shape of the heat insulating material in the heat insulating box according to the present invention, the planar portion of the heat insulating material is not limited to a rectangular shape, and may be another shape. The shape of the planar portion of the heat insulating material may be, for example, a trapezoidal shape, a parallelogram shape, a substantially circular shape, or the like, or a shape in which a polyhedron is developed. Moreover, the heat insulating material may have a ring shape so as to have a plurality of first outer edges and a plurality of second outer edges, for example.

  FIG. 5 is a perspective view showing the entirety of a washing / drying machine 600 which is another example of the home electric appliance according to the present invention. The washing / drying machine 600 is a washing machine with a drying function. As shown in FIG. 5, the washing and drying machine 600 includes an exterior 601, a lid 602 for opening and closing an opening of the exterior 601, a cylindrical steel plate 603 accommodated inside the exterior 601, and the interior of the steel plate 603. And a washing / drying tank (not shown). A vacuum heat insulating material 610 is disposed between the exterior 601 and the steel plate 603.

  The vacuum heat insulating material 610 is bonded to the steel plate 603 with a hot melt adhesive containing a thermoplastic component. The steel plate 603 is formed of a metallic material plate. On the surface of the steel plate 603 to which the vacuum heat insulating material 610 is attached, a resin material including a foam heat insulating material is disposed so as to cover the vacuum heat insulating material 610.

  The outer edge corresponding to the first outer edge of the vacuum heat insulating material 610 is located near the upper end of the steel plate in a state where the washing / drying machine 600 is installed on the floor surface. The outer edge corresponding to the second outer edge is located near the lower end of the steel plate in a state where the washing / drying machine 600 is installed on the floor surface. However, the outer edge corresponding to the first outer edge and the outer edge corresponding to the second outer edge may be reversed.

  The vacuum heat insulating material 610 is configured in the same manner as the vacuum heat insulating material 30 (both refer to FIG. 1) used in the refrigerator 100 of the first embodiment. Moreover, the adhesive agent is apply | coated to the vacuum heat insulating material 610 similarly to the vacuum heat insulating material 30 used for the refrigerator 100 of 1st Embodiment. In the washing / drying machine 600, the vacuum heat insulating material 610 may be disposed at other positions.

  In addition, the apparatus provided with the heat insulation box 1 according to the present invention may be a cooler box in which a heat insulating material is bonded to a metallic plate material, for example.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

1: heat insulation box, 21: outer box, 22: inner box, 23: foam heat insulating material, 30: vacuum heat insulating material, 41: first outer edge, 42: second outer edge, 45, 46: outer edge, 51, 52, 53, 57, 58, 59: adhesive, 100: refrigerator, 600: washing dryer

Claims (3)

An inner box, an outer box, a heat insulating material having a first outer edge and a second outer edge facing each other, and a foam heat insulating material filled in a space formed by the inner box and the outer box,
Either the inner box or the outer box is a plate formed of a metallic material,
The surface of the heat insulating material to be bonded to the plate has an adhesive region to which an adhesive is applied,
In the adhesion region, the first region near the first outer edge and the second region near the second outer edge are more firmly attached to the plate than the third region other than the first region and the second region. Glued ,
The amount of adhesive applied to the first region and the second region is greater than the amount of adhesive applied to the third region,
In the bonding region, the adhesive is applied linearly along a direction in which the first outer edge and the second outer edge extend,
The heat insulation box which the width of the line of the adhesive applied to the 1st field and the 2nd field is larger than the width of the line of the adhesive applied to the 3rd field . The apparatus provided with the heat insulation box of Claim 1 . Heat insulation comprising an inner box, an outer box, a heat insulating material having a first outer edge and a second outer edge facing each other, and a foam heat insulating material filled in a space formed by the inner box and the outer box A method for manufacturing a box,
Either the inner box or the outer box is a plate formed of a metallic material,
A first step of joining the inner box and the outer box;
In the bonding region where the adhesive on the surface bonded to the plate of the heat insulating material is applied , the first region in the vicinity of the first outer edge and the second region in the vicinity of the second outer edge include the first region. A second step of applying an adhesive to the heat insulating material so as to be more firmly bonded to the plate than the third region other than the first region and the second region;
A third step of bonding the heat insulating material coated with the adhesive to the plate;
Along a direction toward the second outer edge from said first outer edge, Bei example and a fourth step of introducing the foam insulation in the space between the outer box and the inner box,
The amount of adhesive applied to the first region and the second region is greater than the amount of adhesive applied to the third region,
In the bonding region, the adhesive is applied linearly along a direction in which the first outer edge and the second outer edge extend,
The method for manufacturing a heat insulating box , wherein the width of the adhesive line applied to the first region and the second region is larger than the width of the adhesive line applied to the third region .

Images