JP2009243742A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize both strength of a box body and heat insulating performance while facilitating separation of an outer box and a heat insulating part and improving dismantling property upon disposal and recycling of a refrigerator. <P>SOLUTION: The refrigerator 1 includes a heat insulating box body 20 having the heat insulating part 23 in a space formed by an outer box 21 and an inner box 21. The heat insulating part 23 includes a box-shaped heat insulating body 20 formed in a box shape in advance, and a fixing means 60 arranged between the box-shaped heat insulating body 20 and the outer box 21 in a non-adhesive state with respect to the box-shaped heat insulating body 20 and the outer box 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator that facilitates disposal and recycling.

  In recent years, from the viewpoint of protection of the global environment such as prevention of global warming, commercialization of refrigerators that employ vacuum heat insulation panels has been promoted as energy-saving technologies for refrigerators, and energy-saving technologies are continually progressing day by day. On the other hand, research for facilitating the disposal and recycling of refrigerators has been conducted in the past, but few have been commercialized.

  Conventionally, a refrigerator has a box made of an outer box, an inner box, a foam heat insulating material, etc., a refrigeration cycle component made up of a compressor, a condenser, a refrigerant pipe, etc. for circulating a refrigerant, an electric wiring, a control board, and And electric parts made of a power supply board and the like. And about a refrigerant | coolant pipe, an electrical wiring, etc., since it is buried in the foam heat insulating material, dismantling is often difficult.

  As a method of disassembling used refrigerators in the current home appliance recycling factory, parts that can be easily removed from the outside, such as doors, shelves and containers in containers, boards, refrigeration cycle parts such as compressors, etc. were removed in advance. Later, the buried parts such as refrigerant pipes, electrical wiring and reinforcing members are put into a crusher (shredder) together with the outer box, inner box, and heat insulating material, and then the metal, resin In addition, it is separated and collected into heat insulating materials. However, the urethane foam insulation used in many refrigerators can be separated and recovered, but it is difficult to reuse because it also contains buried parts such as refrigerant pipes, electrical wiring, and reinforcing members as described above. Met.

  JP-A-5-306879 (Patent Document 1), JP-A-6-159919 (Patent Document 2), and JP-A-7-77383 (Patent Document 3) have been proposed to improve the recyclability of conventional refrigerators. Is mentioned.

  The heat insulation box body of patent document 1 consists of an inner box made of styrene resin, an outer box made of styrene resin, and a slab-like foamed styrene heat insulating material incorporated between the inner box and the outer box. And the slab-like foamed polystyrene heat insulating material is adhere | attached on an inner box and an outer box with the styrene-type adhesive agent, and the stickiness of an inner box and an outer box is eliminated. Since the heat insulation box is entirely made of styrene material, it is not necessary to separate the outer box, the inner box, and the heat insulating material at the time of disposal or disassembly, and the disposal work can be easily performed.

  Moreover, the heat insulation box of patent document 2 provides the low melting point plastic layer in the surface which touches the foam insulation of an outer box and an inner box, and adhere | attaches an outer box and a foam insulation, and an inner box and a foam insulation through this This is a heat insulating box. And only by heating a heat insulation box, a low melting-point plastic layer fuse | melts, an outer box and an inner box peel from a foam heat insulating material, and can isolate | separate.

  Moreover, the heat insulation structure of patent document 3 is a direct contact between the inner box and the outer box, the vacuum heat insulating pack embedded between the inner box and the outer box, and the foam heat insulating material (urethane) filled therebetween. In order to prevent this, a release layer is provided on the inner surface of the inner box and the outer box and on the surface of the vacuum heat insulating pack or the like. And it can isolate | separate by removing the coupling | bonding of an outer box and an inner box.

JP-A-5-306879 JP-A-6-159919 JP 7-77383 A

  Although the heat insulation box body of patent documents 1 can carry out disposal work without separating each by making all the outer box, the inner box, the heat insulating material, and the adhesive into the styrene material, using the polystyrene foam as the heat insulating material. Therefore, in order to realize the heat insulating box of the refrigerator, it is necessary to greatly increase the thickness of the heat insulating wall, and in order to achieve the same internal volume, there has been a problem that the external dimensions become large. In addition, in this patent document 1, the content regarding a vacuum heat insulation panel is not described at all, and the heat insulation box structure which employ | adopted the vacuum heat insulation panel is not considered.

  Moreover, although the heat insulation box body of patent document 2 is supposed that it can isolate | separate only by heating a heat insulation box body by providing the low melting-point plastic layer in the surface which contact | connects the foam insulation of an outer box and an inner box, For example, a refrigerator In this case, a large-scale facility is required to heat the entire heat insulating box of the refrigerator due to its size, and there is a problem that a larger-scale heating device is required to dismantle a large amount. In addition, in this patent document 2, there is no description about the content regarding a vacuum heat insulation panel, and the heat insulation box structure which employ | adopted the vacuum heat insulation panel is not considered.

  Moreover, although the heat insulation structure of patent document 3 is separable by removing the coupling | bonding of an inner box and an outer box, since the inner box or an outer box, and a foam heat insulating material are not adhere | attached, the external force in use and foam heat insulation are used. There is a possibility that the outer box and the inner box may become sticky due to shrinkage of the material, which may cause a problem in terms of strength of the box and appearance quality. In addition, although patent document 3 has shown the structure which employ | adopted the vacuum heat insulation pack, since the vacuum heat insulation pack and the foam heat insulating material are not adhere | attached, removal of a vacuum heat insulation pack is easy, but a vacuum heat insulation pack is in use. There is a concern that deterioration of the heat insulation performance due to convection or the like may occur between the foam and the heat insulating foam material.

  Furthermore, in a general refrigerator that employs a conventional vacuum insulation panel, the temperature rise due to heat generation in the crusher or sorting device during disassembly due to the influence of the reactive adsorbent used in the vacuum insulation panel, etc. This is a problem as it causes overload of the device. Further, in a general refrigerator that employs a vacuum heat insulation panel using an inorganic fiber aggregate or powder as a core material, there are also problems such as clogging filters such as a sorting device. From this, before putting in apparatuses, such as a crusher, it is mentioned as a subject to make it the structure which can isolate | separate and remove a vacuum heat insulation panel easily.

  An object of the present invention is to provide a refrigerator that facilitates separation of an outer box and a heat insulating part, achieves both box strength and heat insulating performance, and improves dismantling at the time of disposal and recycling.

  A first aspect of the present invention for achieving the above object is a refrigerator including a heat insulating box having a heat insulating portion in a space formed by an outer box and an inner box, wherein the heat insulating portion is box-shaped in advance. And a fixing means for fixing the box-shaped heat insulator disposed between the box-shaped heat insulator and the outer box in a non-adhesive manner with respect to the box-shaped heat insulator and the outer box. It is in having prepared.

  Moreover, the 2nd aspect of this invention is the refrigerator provided with the heat insulation box which has a heat insulation part in the space formed by an outer box and an inner box, The box-shaped heat insulation by which the said heat insulation part was previously shape | molded by the box shape The outer box has a substantially arcuate side surface that swells outward and a substantially arcuate back surface part that swells outward and has a substantially U-shaped molded product. The box-shaped heat insulator is fixed by disposing a non-adhesive fixing means to the outer box and the box-shaped heat insulator between the bodies.

More preferred specific configuration examples in the first or second aspect of the present invention are as follows.
(1) A concave part for arranging a vacuum heat insulation panel was provided on a part of the outer box side surface of the box-shaped heat insulator, and the vacuum heat insulation panel was arranged in the concave part via an adhesive means and a peeling means.
(2) The recess is provided across a plurality of surfaces on the outer box side surface of the box-shaped heat insulator, and the three-dimensional vacuum heat insulation panel is disposed in the recess via an adhesive means and a peeling means.
(3) The peeling means is a gap for peeling provided on a part of the affixing surface of the vacuum heat insulating panel.
(4) The bonding means is a low melting point resin or a low melting point hot melt adhesive, and the peeling means covers a member that generates heat by supplying moisture with a gas barrier film and seals the gas barrier film in a reduced pressure state. It must be a thing.
(5) The fixing means includes a member having resilience in the thickness direction sandwiched between release layers, and the box-like heat insulator is fixed by the restoring force of the member having resilience.
(6) The fixing means is disposed between the outer box and the box-shaped heat insulator in a state where the heat insulating member having resilience in the thickness direction is covered with a resin film and compressed into a thin plate shape, The said heat insulating body was fixed with the restoring force of the thickness direction.
(7) The fixing means includes a foaming member sandwiched between release layers, and the box-shaped heat insulator is fixed by the foaming pressure of the foaming member.
(8) The box-shaped heat insulator is made of a foam material and is integrally formed with the inner box.
(9) A structure that can be separated and disassembled independently from a metal material, a resin material, an electrical component, a refrigeration cycle, and a vacuum heat insulation panel.

  According to the present invention having such a configuration, while making it easy to separate the outer box and the heat insulating portion, the box strength and the heat insulating performance can be made compatible, and the dismantling property at the time of disposal or recycling can be improved.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. The same reference numerals in the drawings of the respective embodiments indicate the same or equivalent.

(First embodiment)
The refrigerator of 1st Embodiment of this invention is demonstrated using FIGS. 1-6.

  The refrigerator 1 is provided with the heat insulation box 20 which has the refrigerator compartment 2 and the freezer compartment 4 up and down, as shown in FIG. A vegetable room 3 is provided at the bottom of the refrigerator compartment 2. As shown in FIG. 1, the door that closes the front opening of each of the chambers 2 and 4 includes a refrigerator compartment door 5 that rotates around a hinge 10 and a drawer-type freezer compartment door 6. When the pull-out door 6 is pulled out, the container constituting the freezer compartment 4 is pulled out together with the door. A packing 11 for sealing the refrigerator compartment 2 and the freezer compartment 4 is provided on the outer peripheral edges of the refrigerator compartment door 5 and the freezer compartment door 6.

  In addition, as shown in FIG. 2, a partition heat insulating wall 24 is installed to partition and insulate between the refrigerator compartment 2 and the freezer compartment 4. The partition heat insulating wall 24 is a heat insulating wall having a thickness of about 30 to 60 mm, and is made by using a styrofoam, a foam heat insulating material (for example, urethane foam), or a vacuum heat insulating panel alone or in combination. The partition heat insulating wall 24 is removable from the heat insulating box 20. In this embodiment, the partition heat insulation wall 24 includes the vacuum heat insulation panel 50 and is combined with the lid member 12a.

  As shown in FIGS. 2 to 4, the heat insulating box 20 is for insulating the storage chambers 2, 4 and the outside, and the heat insulating portion 23 is provided in the space formed by the outer box 21 and the inner box 22. It is arranged and configured. The heat insulation part 23 is composed of a box-shaped heat insulator 25 formed in a box shape in advance, and a vacuum heat insulation panel 50 disposed in a part of the box-shaped heat insulator 25.

  In addition, as the box-shaped heat insulator 25, a foam-based heat insulating material such as a polystyrene resin foam (EPS), an acrylonitrile / styrene copolymer resin foam (AS), a phenol resin foam, a urethane resin foam, or the like is used. In the present embodiment, the box-shaped heat insulator 25 is made of foamed styrofoam, and the vacuum heat insulating panel 50 is combined to ensure heat insulating performance. Further, a vacuum heat insulating panel 50 is disposed between the ceiling portion 21 a and the back surface portion 21 b of the outer box 21 and the concave portion of the box-shaped heat insulator 25. An adhesive means 40 and a peeling means 41 are arranged between the vacuum heat insulation panel 50 and the box-like heat insulator 25 so that the vacuum heat insulation panel 50 can be easily taken out at the time of disposal or recycling.

  A fixing means 60 is provided between the outer box 21 and the box-shaped heat insulator 25 or the vacuum heat insulating panel 50. In order to facilitate disassembly and separation of the outer box 21, the fixing means such as the restoring force, repulsive force, foaming pressure, etc. of the fixing means 60 without bonding the outer box 21 and the box-shaped heat insulating body 25 or the vacuum heat insulating panel 50. The surface pressure is maintained by 60.

  As the fixing means 60, a bag-like film made of polyethylene or the like is previously installed between the outer box 21 and the box-like heat insulator 25 or the vacuum heat insulating panel 50, and the bag is filled with a foam-type member. Then, the outer box 21 and the box-shaped heat insulator 25 or the vacuum heat insulating panel 50 are fixed and held by the foaming pressure. Note that instead of using a foam-based member, a member having a restoring force after being compressed in the thickness direction may be used. For example, examples of the foam member include flexible urethane foam, polyethylene foam, phenol resin foam, and urethane resin foam. Examples of the member generating the restoring force include inorganic fiber aggregates such as glass wool and ceramic wool, organic fiber aggregates such as resin fibers such as polyethylene terephthalate and polypropylene, and rubber and urethane materials.

  In addition, a cooler 28 is provided on the back side of the freezer compartment 4 in order to cool the refrigerator compartment 2 and the freezer compartment 4 of the refrigerator to a predetermined temperature. The cooler 28, the compressor 30, the condenser 31, and a capillary tube (not shown) are connected by a refrigerant pipe to constitute a refrigeration cycle. The compressor 30 and the condenser 31 constituting the refrigeration cycle are integrated into a bottom portion together with the control board 34 and the like so as to be easily removed for easy removal. Above the cooler 28, a blower 27 that circulates the cool air cooled by the cooler 28 in the refrigerator and maintains a predetermined low temperature is disposed.

  As shown in FIGS. 3 and 4, the vacuum heat insulation panel 50 is disposed in the concave portion 26 provided in the box-like heat insulator 25 via the adhesive means 40 and the peeling means 41, and the box-like heat insulator 25 in a normal use state. It is adhered and fixed to. As the bonding means 40, a low melting point resin or a low melting point hot melt adhesive is used. As the peeling means 41, an aluminum laminate film having a heat-welded layer is used as an outer packaging material, and calcium oxide molded into a sheet shape is put therein, and the inside of the outer packaging material is sealed in a reduced pressure state. The bonding means 40 is applied to the surface of the outer packaging material of the peeling means 41, and bonds the peeling means 41 and the box-shaped heat insulator 25 and between the peeling means 41 and the vacuum heat insulating panel 50. As a result, the vacuum heat insulating panel 50 is fixed to the box-shaped heat insulating body 25 via the bonding means 40 and the peeling means 41. Since calcium oxide generates heat when water is supplied, when the refrigerator 1 is discarded or recycled, water is supplied to the calcium oxide of the peeling means 41 by a syringe or the like to generate heat, and this heat is used to reduce the adhesion means 40. The vacuum heat insulating panel 50 can be peeled off by melting the melting point resin or the low melting point hot melt. The peeling means 41 is not limited to calcium oxide, and may be any one that generates heat by supplying moisture or the like and has no danger of ignition or the like.

  The compressor 30, the condenser 31, and the control board 34 disposed below the bottom wall of the heat insulating box 20 are components that generate large amounts of heat, and a cooler 28 is disposed on the back surface of the freezer compartment 4 immediately above these components. ing. For this reason, the bottom wall of the heat insulation box 20 is a portion having a large temperature difference between the low temperature portion and the high temperature portion. Therefore, for the purpose of effectively preventing heat intrusion into the cabinet, the bottom wall of the heat insulation box 20 is made to be a single three-dimensional vacuum heat insulation panel 50 to reduce the influence of the heat bridge of the outer packaging material. It is like that.

  The vacuum heat insulation panel 50 has flexibility without using a binder as a core material, and can be easily folded without processing a groove or the like. In the case of a vacuum insulation panel in which the core is molded to a certain thickness with a binder, a hardened layer with a high binder concentration is formed on the surface of the core. A decrease in thickness and a cut state of the core material are caused, and the heat insulating performance is deteriorated. The core material of the vacuum heat insulating panel of this embodiment has a large repulsive force against atmospheric pressure as well as flexibility, and buckling does not occur in the inner portion of the bend, so that a decrease in the core material thickness at the bent portion can be almost eliminated. Therefore, a bent shape can be obtained without deteriorating the heat insulation performance.

  As shown in FIG. 5, the vacuum heat insulating panel 50 covers a core material 51, an inner packaging material 52 for holding the core material 51 in a compressed state, and a core material 51 held in a compressed state by the inner packaging material 52. It is composed of a jacket material 53 having a gas barrier layer and an adsorbent 54.

  The core material 51 is a laminate of inorganic fibers that are not bonded or bound with a binder. Glass wool having an average fiber diameter of 4 μm is used as the inorganic fiber. By using a laminate of inorganic fiber materials as the core material 51, gas generation from the core material 51 is reduced, which is advantageous in terms of heat insulation performance. The core material 51 is not particularly limited to this, and may be, for example, inorganic fibers such as ceramic fibers, rock wool, or glass fibers other than glass wool. Depending on the type of the core material 51, the inner packaging material 52 may be unnecessary.

  The jacket material 53 is positioned on the surface of the vacuum heat insulating panel 50, and is configured in a bag shape in which a portion having a certain width is bonded to the ridge line of the laminate film having the same size by heat welding. The laminate structure of the jacket material 53 is not particularly limited as long as it has gas barrier properties and can be thermally welded.

  The jacket material 53 of the present embodiment is a laminate film having a three-layer structure of a surface layer, a gas barrier layer, and a heat welding layer. Here, the surface layer is configured by providing a metal vapor deposition layer on a resin film having low hygroscopicity. The gas barrier layer is formed by providing a metal vapor deposition layer on a resin film having a high oxygen barrier property. The surface layer and the gas barrier layer are bonded so that the metal vapor deposition layers face each other. A film having a low hygroscopic property is used for the heat-welded layer as in the case of the surface layer. Specifically, the surface layer is a biaxially stretched polypropylene film with aluminum vapor deposition or a biaxially stretched polyethylene terephthalate film with aluminum vapor deposition, and the gas barrier layer is a biaxially stretched ethylene vinyl alcohol copolymer resin film or aluminum with aluminum vapor deposition. A biaxially stretched polyvinyl alcohol resin film with vapor deposition is used, and the heat-welded layer is an unstretched polyethylene film or an unstretched polypropylene film. As the gas barrier layer, a metal foil or a resin-based film provided with a gas barrier film such as an inorganic layered compound or a resin-based gas barrier coating material, or a heat-welded layer such as a polybutylene terephthalate film having a high oxygen barrier property may be used. .

  The purpose of placing a resin with low hygroscopicity on the surface layer and the heat-welded layer is that the gas barrier layer film with high oxygen barrier properties deteriorates due to moisture absorption. It suppresses moisture absorption. Thereby, also in the evacuation process of the vacuum heat insulation panel 50, since the amount of moisture brought in by the jacket material 53 is small, the evacuation efficiency is greatly improved, leading to high performance.

  The laminate structure of the jacket material 53 is not particularly limited to a three-layer structure as long as it has moisture resistance, gas barrier properties, and heat weldability. The surface protective layer, the first gas barrier layer, the second layer A multi-layer structure in which a plurality of gas barrier layers are provided, such as a laminate film having a four-layer structure of a gas barrier layer and a heat welding layer, may be used. For example, as the surface protective layer, a film of polyamide, polypropylene, polyethylene terephthalate or the like, or a biaxially stretched film is preferable in consideration of gas barrier properties, hygroscopicity, and the like. As the first and second gas barrier layers, a biaxially stretched film provided with a gas barrier film made of metal, metal oxide, inorganic material or the like is preferable. For example, polyethylene terephthalate, ethylene vinyl alcohol copolymer, polyvinyl alcohol There are films such as. The heat-welding layer is required to have strength at the time of heat-welding, and is often combined with films such as polyethylene, polypropylene, polybutylene terephthalate such as low density, medium density, high density and linear low density. Each layer is bonded by a dry laminating method via a two-component curable urethane adhesive, but the adhesive and the bonding method are not particularly limited thereto.

  Moreover, although the heat-weldable polyethylene film was used for the encapsulating material 52 and the physical adsorption type synthetic zeolite was used for the adsorbent 54, they are not limited to these materials. The inner packaging material 52 may be a polypropylene film, a polyethylene terephthalate film, a polybutylene terephthalate film or the like that has low hygroscopicity and can be thermally welded and has little outgas, and the adsorbent 54 adsorbs moisture and gas. Either adsorption or chemical reaction type adsorption may be used.

  The overall schematic structure of the refrigerator 1 will be described with reference to FIG.

  A box-like heat insulator 25 which is previously formed into a box shape is formed integrally with the inner box 22. A heat insulating partition 24 for partitioning the heat insulating box 20 into the storage chambers 2 and 4 is disposed in the middle of the inner box 22. A refrigerant pipe 80 is disposed on the front surface of the box-shaped heat insulator 25. The outer box 21 is composed of a U-shaped molded portion 21b, a ceiling portion 21a, and bottom surface portions 21c and 21d that constitute a side surface and a back surface. The outer box 21 and the box-shaped heat insulating body 25 are formed by fitting a fitting bent portion provided in the outer box 21 and a front opening outer peripheral flange portion of the inner box 22 formed integrally with the box-shaped heat insulating body 25. Are combined.

  Also, the U-shaped molded part 21b is bent into a U-shaped vacuum heat insulation panel 50, the ceiling 21a is bent into a plate-like vacuum heat insulating panel 50, and the bottom part 21c is bent into a substantially Z shape. The three-dimensional vacuum heat insulation panel 50 is arranged. In addition, a refrigeration cycle such as a compressor 30, a condenser 31, and a substrate 34 and a control substrate 34 are arranged on the bottom surface portion 21d. A lid 21e is installed on the back of the refrigeration cycle. In order to ensure the box strength of the outer box 21, reinforcing members 90 are provided at the four corners of the upper and lower surfaces of the outer box 21 to ensure the strength against twisting and falling of the outer box 21.

  It was confirmed that the outer case 21 and the box-shaped heat insulator 25 can be easily separated by removing the top surface portion 21a and the bottom surface portion 21d and releasing the fixation of the outer case 21 and the inner case 22. Further, it was confirmed that by supplying moisture to the peeling means 41 with a syringe or the like, heat was generated at 80 to 100 ° C., and the low melting point hot melt was melted, and the vacuum heat insulating panel 50 could be easily peeled off. As a result, it was easy to remove each component, and it was possible to obtain a refrigerator that improved disassembly workability and facilitated recyclability at the component level.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is a view corresponding to FIG. 4 in the refrigerator according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in the points described below, and the other points are basically the same as those in the first embodiment, and thus redundant description is omitted.

  In the second embodiment, the bonding means 40 is applied to a range smaller than the contact area of the vacuum heat insulating panel 50 to the box-shaped heat insulator 25, and the portion near the ridge line of the vacuum heat insulating panel 50 is unbonded. The gap generated in the bonded portion is the peeling means 41. The peeling means 41 can be provided at a lower cost than the peeling means of the first embodiment.

  When the refrigerator according to the second embodiment is disassembled in the same manner as in the first embodiment, the gap portion of the non-bonded portion of the vacuum heat insulation panel 50 becomes a starting point for peeling the vacuum heat insulation panel 50. It was possible to peel off.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a view corresponding to FIG. 3 in the refrigerator according to the third embodiment of the present invention. The third embodiment is different from the first embodiment in the points described below, and the other points are basically the same as those in the first embodiment, and thus redundant description is omitted.

  In the third embodiment, the shape of the U-shaped molded portion 21b is preliminarily expanded outward. Although the bulging shape is not particularly limited, in the third embodiment, the central portion of each surface (side surface, rear surface) of the U-shaped molded portion 21b is 5 to 10 mm longer than the ridge line portion. Set.

  According to the third embodiment, the bulging shape of the outer box 21 not only facilitates the installation of the fixing means 60 but also causes the outer box 21 to be generated due to variations in restoring force of the fixing means 60 due to the bulging in advance. Therefore, it is possible to obtain a refrigerator with improved appearance.

  According to the above-described embodiment, in the refrigerator in which the heat insulating material is disposed in the space formed by the outer box and the inner box, the heat insulating material is formed of a heat insulating body that is formed in a box shape in advance, and the heat insulating body and the outer Since the non-adhesive fixing means is provided between the boxes, the outer box and the heat insulator can be easily separated.

  Moreover, a vacuum insulation panel and a box shape are provided by providing a recess for vacuum insulation panel placement on a part of the outer box side surface of the box-shaped insulation, and providing an adhesion means and a peeling means between the recess and the vacuum insulation panel. While ensuring the adhesive strength with a heat insulator, the separability at the time of disassembly can be improved.

  In addition, a concave portion for arranging a vacuum heat insulation panel across a plurality of surfaces is provided in a part of the outer surface of the box-shaped heat insulator, and a three-dimensional vacuum heat insulation panel is arranged in the concave portion, and the space between the concave portion and the vacuum heat insulation panel is provided. By providing the adhesive means and the peeling means, the vacuum heat insulation panel can be enlarged, so that the influence of the heat bridge can be reduced, the heat insulation performance can be improved and the separability at the time of disassembly can be improved.

  Further, in the refrigerator in which a heat insulating material is arranged in a space formed by the outer box and the inner box, the outer box is a substantially U-shaped molded product in which a side surface and a back surface portion are formed, and the side surface and the back surface portion are outside. By forming a non-adhesive fixing means between the outer box and the heat insulator, it can be fixed without using an adhesive, and the distortion of the outer box is conspicuous due to the substantially arc shape. It has the effect of disappearing, and it is possible to secure the box strength and improve the appearance. The outer box formed in a substantially U-shape can withstand the twisting, twisting, and falling of the outer box by placing reinforcing members at the corners of the upper and lower surfaces in order to secure the box strength. It can be done.

  In addition, the fixing means is composed of a material having resilience in the thickness direction sandwiched between release layers, and is fixed by the resilience of the material having resilience, so that the outer box and the heat insulator do not shift. When disassembling, fixing can be easily released by removing the outer plate.

  The fixing means is a resin film covering a heat insulating member having resilience in the thickness direction and temporarily compressed and sealed in a thin plate shape. After combining the outer box and the heat insulator, the sealing of the resin film is released. Therefore, it is easy to handle and can be inserted into a narrow space relatively easily.

  In addition, since the fixing means consists of a foamed material sandwiched between release layers and is fixed by the foaming pressure of the foamed material, it can be used for complex shaped parts with many uneven parts such as ribs, Since the gap between the outer box and the heat insulating body can be filled, the box strength can be secured and the appearance of the outer box can be improved.

  In addition, since the heat insulator is a box-shaped heat insulator made of a foam material and formed integrally with the inner box, the inner box and the heat insulating material have good adhesion, and peeling due to temperature fluctuations in the cabinet is unlikely to occur.

  Further, since the peeling means is a peeling portion provided on a part of the affixing surface of the vacuum heat insulating panel, the vacuum heat insulating panel can be peeled off relatively easily from the peeling portion after the outer box is disassembled.

  In addition, the adhesive means is a low melting point resin or a low melting point hot melt adhesive, and the peeling means covers the material that generates heat by supplying moisture with a gas barrier film, and the gas barrier film is sealed in a reduced pressure state. By supplying moisture at the time of dismantling, self-heating is generated, and the low melting point resin or the low melting point hot melt adhesive is melted by this heat to facilitate separation.

  In addition, since the metal material, the resin material, the electrical component, the refrigeration cycle, and the vacuum heat insulation panel can be separated and disassembled independently, recycling can be easily performed for each material field.

It is a front view of the refrigerator of 1st Embodiment of this invention. It is AA sectional drawing of FIG. It is ZZ sectional drawing of FIG. It is the B section enlarged view of FIG. It is a schematic sectional drawing of the vacuum heat insulation panel used for the refrigerator of FIG. It is a disassembled perspective view of the refrigerator of FIG. It is the FIG. 4 equivalent view in the refrigerator of 2nd Embodiment of this invention. It is the FIG. 3 equivalent view in the refrigerator of 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Refrigerator, 2 ... Cold room, 3 ... Vegetable container, 4 ... Freezer room, 5 ... Cold room door, 6 ... Freezer room door, 7 ... Cold room door, 10 ... Door hinge, 11 ... Packing, 12 ... Heat insulation Partition, 12a ... lid material, 20 ... heat insulation box, 21 ... outer box, 21a ... ceiling part, 21b ... U-shaped molded part, 21c ... bottom face part, 21d ... bottom face part, 21e ... lid, 22 ... inner box , 23 ... heat insulation part, 25 ... box-shaped heat insulator, 26 ... recess, 27 ... blower, 28 ... cooler, 30 ... compressor, 31 ... condenser, 34 ... control board, 40 ... adhesion means, 41 ... peeling means 50 ... Vacuum heat insulating panel, 51 ... Core material, 52 ... Enveloping material, 53 ... Cover material, 54 ... Adsorbent, 60 ... Fixing means, 80 ... Refrigerant pipe, 90 ... Reinforcing member.

Claims (11)

In the refrigerator provided with a heat insulating box having a heat insulating portion in the space formed by the outer box and the inner box,
The heat insulating portion is a box-shaped heat insulator formed in a box shape in advance, and is disposed between the box-shaped heat insulator and the outer box in a non-adhering manner with respect to the box-shaped heat insulator and the outer box. And a fixing means for fixing the heat insulator.   In Claim 1, the recessed part for vacuum heat insulation panel arrangement | positioning was provided in a part of outer box side surface of the said box-shaped heat insulation body, and the vacuum heat insulation panel was arrange | positioned in the said recessed part through the adhesion | attachment means and the peeling means, It is characterized by the above-mentioned. Refrigerator.   In Claim 2, the said recessed part was provided ranging over the several surface of the outer box side surface of the said box-shaped heat insulating body, and the said three-dimensional-shaped vacuum heat insulation panel was arrange | positioned through the adhesion | attachment means and the peeling means in the said recessed part. Features a refrigerator.   The refrigerator according to claim 2 or 3, wherein the peeling means is a peeling gap provided on a part of a sticking surface of the vacuum heat insulating panel.   5. The adhesive means according to claim 2, wherein the adhesive means is a low melting point resin or a low melting point hot melt adhesive, and the peeling means covers a member that generates heat by supplying water with a gas barrier film, and the inside of the gas barrier film. A refrigerator characterized by being sealed under reduced pressure. In the refrigerator provided with a heat insulating box having a heat insulating portion in the space formed by the outer box and the inner box,
The heat insulating portion is formed of a box-shaped heat insulator formed in a box shape in advance, and the outer box is formed in a substantially arcuate shape in which a substantially arc-shaped side surface bulging outward and a substantially arc-shaped back surface portion expanding outward are formed Having a molded product and fixing the box-shaped heat insulator by disposing a non-adhesive fixing means to the outer box and the box-shaped heat insulator between the outer box and the box-shaped heat insulator. Features a refrigerator.   The fixing means according to any one of claims 1 to 6, wherein the fixing means includes a member having resilience in a thickness direction sandwiched between peeling layers, and the box-shaped heat insulator is fixed by a restoring force of the member having resilience. A refrigerator characterized by that.   In any one of Claims 1-6, the said fixing means is between the said outer box and the said box-shaped heat insulator in the state which covered the heat insulation member which has the restoring property in the thickness direction with the resin film, and was compressed into thin plate shape. A refrigerator which is arranged and fixed with the heat insulator by a restoring force in a thickness direction of the heat insulating member.   The refrigerator according to any one of claims 1 to 6, wherein the fixing means includes a foaming member sandwiched between release layers, and the box-shaped heat insulator is fixed by a foaming pressure of the foaming member. .   The refrigerator according to any one of claims 1 to 9, wherein the box-shaped heat insulator is made of a foam material and is integrally formed with the inner box.   11. The refrigerator according to claim 1, wherein the refrigerator has a structure that can be separated and disassembled independently of a metal material, a resin material, an electrical component, a refrigeration cycle, and a vacuum heat insulation panel.

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