WO2019117061A1 - Refrigerator and method for manufacturing same - Google Patents

Abstract

This refrigerator is provided with: a box-shaped casing (50) having an outer box (60) and an inner box (70), and having an opening portion (22); a thermal insulation region (57) enclosed by the outer box (60) and the inner box (70); two first vacuum thermally insulating materials (80) disposed in the thermal insulation region (57) with a corner portion (56) of the casing (50) therebetween; and a second vacuum thermally insulating material (90) disposed in the thermal insulation region (57) and extending along the corner portion (56). The second vacuum thermally insulating material (90) is in contact with first surfaces of each of the two first vacuum thermally insulating materials (80) that face the inner box (70).

Description

Refrigerator and method of manufacturing the same

The present disclosure relates to a refrigerator and a method of manufacturing the same.

The refrigerator of patent document 1 is known as a conventional refrigerator. In this refrigerator, a vacuum heat insulating material is provided between the outer case and the inner case. Moreover, the sealing material and the heat insulation member are arrange | positioned at the corner | angular part of an outer case and an inner case.

In the refrigerator of Patent Document 1, the seal material and the heat insulating member are disposed in the space surrounded by the inner surface of the outer case, the inner surface of the inner case, and the side surface of the vacuum heat insulating material at the corner. However, since this heat insulating member is a molded foam polystyrene (EPS) or the like, the heat insulating performance is inferior to that of a vacuum heat insulating material. In addition, the sealing material is 100% solid content based on a thermoplastic synthetic resin or rubber, and the heat insulating performance is further inferior to that of the heat insulating member. In addition, since the sealing material is disposed between the heat insulating member and the vacuum heat insulating material, heat may be transferred between the outer case and the inner case via the sealing material. Therefore, the heat insulation performance in the corner part of a refrigerator will fall.

JP 2014-126224 Patent No. 5310928 gazette

The present disclosure provides a refrigerator that can reduce the decrease in heat insulation performance at the corners, and a method of manufacturing the same.

Specifically, the refrigerator according to the present disclosure includes a box-shaped case having an outer case and an inner case and having an opening, a heat insulating area surrounded by the outer case and the inner case, and a case. It comprises two first vacuum heat insulating materials disposed in the heat insulating area across the corner of the body, and a second vacuum heat insulating material disposed in the heat insulating area and extending along the corner. The second vacuum heat insulating material is in contact with the first surface of each of the two first vacuum heat insulating materials facing the inner box.

According to this configuration, the second vacuum heat insulating material is excellent in heat insulating performance, and is in a state of being overlapped and in contact with the first vacuum heat insulating material. For this reason, the heat transfer between the adjacent 1st vacuum heat insulating materials is interrupted | blocked. Therefore, it is possible to reduce the decrease in the heat insulation performance at the corner of the housing.

FIG. 1 is a perspective view of the refrigerator according to the first embodiment of the present disclosure as viewed from the front side. FIG. 2 is a cross-sectional view of the refrigerator of FIG. 1 as viewed from the left side. FIG. 3 is a cross-sectional view of the refrigerator of FIG. 2 taken along line III-III. FIG. 4 is an enlarged cross-sectional view of the corner on the right side of the main body in FIG. FIG. 5 is an enlarged cross-sectional view of the periphery of the right side of the main body in FIG. FIG. 6 is a perspective view schematically showing a first vacuum heat insulating material, a second vacuum heat insulating material, and a third vacuum heat insulating material of the refrigerator according to the first embodiment. FIG. 7 is an exploded perspective view showing a second vacuum heat insulating material. FIG. 8 is a perspective view showing a second vacuum heat insulating material. FIG. 9A is a cross-sectional view of the case of the second vacuum heat insulating material as viewed from above. FIG. 9B is an enlarged cross-sectional view of a portion of the case of the second vacuum heat insulating material in FIG. 9A. FIG. 10 is a perspective view of the refrigerator according to the first embodiment as viewed from the rear side. FIG. 11 is a view of the refrigerator according to the first embodiment as viewed from the rear side. FIG. 12 is a rear view of the refrigerator according to the second embodiment of the present disclosure. FIG. 13 is a perspective view schematically showing a first vacuum heat insulating material, a second vacuum heat insulating material, and a third vacuum heat insulating material of the refrigerator according to the second embodiment. FIG. 14 is a rear view of the refrigerator according to the third embodiment of the present disclosure. FIG. 15 is a perspective view schematically showing a first vacuum heat insulating material, a second vacuum heat insulating material, and a third vacuum heat insulating material of the refrigerator according to the third embodiment. FIG. 16 is a perspective view schematically showing a first vacuum heat insulator, a second vacuum heat insulator, a third vacuum heat insulator, and a fourth vacuum heat insulator in a modification of the present disclosure. FIG. 17 is a cross-sectional view of the refrigerator according to the fourth embodiment of the present disclosure, taken along line XVII-XVII in FIG. FIG. 18 is an enlarged cross-sectional view of the corner on the right side of the main body in FIG. FIG. 19A is a cross-sectional view showing an example of a second vacuum heat insulating material according to another embodiment of the present disclosure. FIG. 19B is a cross-sectional view showing another example of the second vacuum heat insulating material according to the other embodiment.

A refrigerator according to one aspect of the present disclosure includes an outer case and an inner case, and a box-shaped case having an opening, a heat insulating area surrounded by the outer case and the inner case, and a case. The first vacuum heat insulating material includes two first vacuum heat insulating materials disposed in the heat insulating area across the corner, and a second vacuum heat insulating material disposed in the heat insulating area and extending along the corner. The second vacuum heat insulating material is disposed in contact with the first surface of each of the two first vacuum heat insulating materials facing the inner box.

According to this configuration, the second vacuum heat insulating material is excellent in heat insulating performance, and is in a state of being overlapped with and in contact with the first vacuum heat insulating material. For this reason, the heat transfer between the adjacent 1st vacuum heat insulating materials is interrupted | blocked. Therefore, it is possible to reduce the decrease in the heat insulation performance at the corner of the housing.

In the refrigerator according to another aspect of the present disclosure, the shape of the cross section orthogonal to the extending direction of the second vacuum heat insulating material may be an L shape, a triangle or a square.

According to this configuration, the corner portion of the housing is reinforced by the second vacuum heat insulating material, so the rigidity of the housing is enhanced.

In the refrigerator according to another aspect of the present disclosure, the second vacuum heat insulating material is disposed between the two first vacuum heat insulating materials, and further having a convex portion protruding toward the outer case. Good.

According to this configuration, the convex portion of the second vacuum heat insulating material fills the space between the two adjacent first vacuum heat insulating materials. This further reduces the decrease in the heat insulation performance at the corner of the housing.

The refrigerator according to another aspect of the present disclosure further includes a third vacuum heat insulating material disposed in the heat insulating area, the housing has a peripheral portion surrounding the periphery of the opening, and the third vacuum heat insulating material is The first vacuum heat insulating material of one of the two first vacuum heat insulating materials may be disposed in contact with the second surface opposite to the peripheral portion.

According to this configuration, the third vacuum heat insulating material reduces the reduction in the heat insulation around the opening in the housing. In addition, since the vicinity of the opening of the housing is reinforced by the third vacuum heat insulating material, the rigidity of the housing is enhanced.

The refrigerator according to another aspect of the present disclosure further includes a fourth vacuum heat insulating material disposed in the heat insulating region on the side opposite to the side where the opening is disposed, the fourth vacuum heat insulating material being the second vacuum heat insulating material It may be extended in the direction orthogonal to the material.

According to this configuration, the second vacuum heat insulating material and the fourth vacuum heat insulating material are extended in the direction orthogonal to each other, whereby the rigidity of the housing is further enhanced.

The refrigerator according to another aspect of the present disclosure may further include a foam insulation disposed in the heat insulation area.

According to this configuration, the heat insulating performance and the rigidity of the casing can be improved by arranging the heat insulating area with the foam heat insulating material.

The refrigerator according to another aspect of the present disclosure further includes an inlet provided in the outer case, into which the undiluted solution of the foamed insulation material is injected, and when the outer case is viewed from one side, the inlet has two inlets. The first vacuum heat insulating material and the second vacuum heat insulating material may be arranged not to overlap with each other.

According to this configuration, since the injection port is not blocked by the first vacuum heat insulating material and the second vacuum heat insulating material, the undiluted solution of the foamed heat insulating material is appropriately injected from the injection port to the heat insulating region.

In the refrigerator according to another aspect of the present disclosure, the inlet includes a plurality of inlets, and when the outer case is viewed from one side, the direction in which the second vacuum heat insulating material is extended among the plurality of inlets. A first vacuum insulator and one second vacuum insulator of the two first vacuum insulators may be disposed between the two inlets adjacent to each other at.

According to this configuration, in the outer case of the housing, since the plurality of injection ports are disposed apart from each other, the undiluted solution of the foamed heat insulating material is injected more uniformly from the injection port into the heat insulation space of the housing.

In the refrigerator according to another aspect of the present disclosure, the inlet includes a plurality of inlets, the second vacuum heat insulating material includes two second vacuum heat insulating materials, and the outer case is viewed from one side. The first vacuum insulator of one of the two first vacuum insulators is disposed between two inlets adjacent to each other in the direction in which the second vacuum insulator extends in the inlets, In addition, two inlets adjacent to each other in a direction perpendicular to the direction in which the second vacuum heat insulating material extends may be disposed between the two second vacuum heat insulating materials.

According to this configuration, in the outer case of the housing, since the plurality of injection ports are disposed apart from each other, the undiluted solution of the foamed heat insulating material is injected more uniformly from the injection port to the heat insulation area of the housing. Further, the length of the second vacuum heat insulating material in the direction in which the first vacuum heat insulating material and the second vacuum heat insulating material are extended can be made longer than the length of the first vacuum heat insulating material, and the rigidity of the housing Can be enhanced.

In the refrigerator according to another aspect of the present disclosure, the inlet includes a plurality of inlets, and when the outer case is viewed from one side, two adjacent ones in a direction in which the second vacuum heat insulating material extends. Between the two inlets, the second vacuum insulator is disposed between the inlets and adjacent to each other in a direction orthogonal to the direction in which the second vacuum insulator extends, two first vacuums A first vacuum insulation of one of the insulation may be arranged.

According to this configuration, in the outer case of the housing, since the plurality of injection ports are disposed apart from each other, the undiluted solution of the foamed heat insulating material is injected more uniformly from the injection port to the heat insulation area of the housing. Further, since the length of the first vacuum heat insulating material in the direction in which the first vacuum heat insulating material and the second vacuum heat insulating material are extended can be made longer than the length of the second vacuum heat insulating material, Thermal insulation is enhanced.

According to one aspect of the present disclosure, there is provided a method of manufacturing a refrigerator, including: a box-shaped case having an outer case and an inner case and having an opening, a heat insulating area surrounded by the outer case and the inner case; A second vacuum heat insulating material disposed in the heat insulating area and extended along the corner, the first vacuum heat insulating material disposed in the heat insulating area across the corner of the housing; [2] Manufacture of a refrigerator having a hollow pillar shaped case and being in contact with the first surface of each of the two first vacuum heat insulators facing the inner box The method includes the steps of forming the case by extrusion molding, inserting the core into the case, and covering the openings at both ends of the case with a lid.

According to this manufacturing method, the hollow columnar case is formed by extrusion molding to form a case of an arbitrary length. As a result, it is not necessary to use different molds and the like for different vacuum heat insulating materials having different lengths, and an increase in manufacturing cost can be suppressed. Further, the vacuum heat insulating material formed in this manner reduces the reduction in the heat insulating performance at the corner of the housing.

The above object, other objects, features and advantages of the present disclosure will be apparent from the following detailed description of the preferred embodiments with reference to the attached drawings.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In all the drawings, the same or corresponding parts will be denoted by the same reference symbols, and overlapping descriptions may be omitted. Further, in all the drawings, components for explaining the present disclosure are extracted and illustrated, and the other components may be omitted. Furthermore, the present disclosure is not limited by the following embodiments.

Embodiment 1
<Structure of refrigerator>
FIG. 1 is a perspective view of the refrigerator according to the first embodiment of the present disclosure as viewed from the front side.

As shown in FIG. 1, the refrigerator 10 includes a main body 20 having an internal space 21 and a door 30 attached to the main body 20. In addition, the door 30 side is called the front side rather than the main body 20, and the other side is called a rear side. Further, the direction orthogonal to the front-rear direction and the up-down direction is referred to as the left-right direction. In addition, these directions mean the thing of the direction seen from the refrigerator 10, respectively.

The refrigerator 10 further includes a refrigerant circuit 40 that cools the internal space 21 of the main body 20. In the refrigerant circuit 40, a compressor 41, a condenser (not shown), a pressure reducer (not shown) and an evaporator 42 are annularly connected by a refrigerant pipe, and the refrigerant is circulated in the refrigerant circuit 40. Do. The internal space 21 of the main body 20 may be referred to as the inside of the storage, and the space outside the main body 20 may be referred to as the outside of the storage.

The main body 20 is box-shaped and has an opening (first opening 22). The front surface of the main body 20 is opened by the first opening 22. The periphery of the first opening 22 is surrounded by the peripheral edge 24 of the main body 20. The internal space 21 of the main body 20 is in communication with the outside via the first opening 22. Further, the internal space 21 is partitioned by the partition wall 23 into a plurality of (five in the present embodiment) spaces (partition spaces). The details of the main body 20 will be described later.

The refrigerator 10 of the present embodiment may have at least one or more doors 30, and may have, for example, a plurality of (five in the present embodiment) doors 30. Each door 30 is provided on the front surface of the main body 20, and can open and close the first opening 22 in each partition space of the main body 20. The form of the door 30 includes, for example, a rotatable type that can be rotated via a hinge 31 and a pull-out type that can be drawn out via a rail (not shown).

<Configuration of main unit>
FIG. 2 is a cross-sectional view of the refrigerator of FIG. 1 as viewed from the left side.

As shown in FIG. 2, the main body 20 has a housing 50 and a heat insulating material described later. The housing 50 is formed of an outer case 60 and an inner case 70.

The housing 50 has a top surface 51, a bottom surface 52, a back surface 53, a right surface 54, and a left surface 55, which have a rectangular plate shape. The back surface portion 53 is provided on the side opposite to the first opening 22 in the housing 50. In addition, the top surface 51, the bottom surface 52, the right surface 54, and the left surface 55 cross each other (orthogonally in this embodiment) with the back surface 53.

The outer case 60 is made of, for example, a thin steel plate and forms a surface exposed to the outside (outside the case) of the housing 50. The inner box 70 is formed of, for example, a resin, and forms a surface exposed to the internal space 21 (inside the cabinet) of the housing 50. The inner case 70 is disposed in the outer case 60 and joined together to form the case 50.

A space (heat insulation space 57), which is a heat insulation area, is provided between the outer case 60 and the inner case 70 in the housing 50. The heat insulating material is disposed in the heat insulating space 57. In the outer case 60 and the inner case 70, the surface on the heat insulation space 57 side may be referred to as an inner surface, and the surface on the opposite side to the inner surface may be referred to as an outer surface. Moreover, in the heat insulation space 57, the outer case 60 side is called outer side rather than the inner case 70, and the other side is called inner side.

FIG. 3 is a cross-sectional view of the refrigerator of FIG. 2 taken along line III-III.

As shown in FIG. 3, in the case 50, an area where the back surface portion 53 and the left surface portion 55 are connected and a region where the back surface portion 53 and the right surface portion 54 are connected are each referred to as a corner portion 56. At the corners 56, the inner box 70 is formed to have a curved cross-sectional shape. At the corner 56, the curvature of the inner box 70 is smaller than the curvature of the outer box 60. Thereby, the inner box 70 curves more gently than the outer box 60. Therefore, the distance between the inner box 70 and the outer box 60 at the corner 56 (the dimension of the heat insulating space 57) is larger than the distance between the inner box 70 and the outer box 60 in the other part. In addition, at least one of the corner 56 between the back face 53 and the top face 51 and the corner 56 between the back face 53 and the bottom face 52, the cross section of the inner box 70 is curved. It may be formed.

FIG. 4 is an enlarged cross-sectional view of the corner on the right side of the main body in FIG.

As shown in FIG. 4, in the heat insulation space 57, for example, a part of the refrigerant pipe 45 of the refrigerant circuit 40 is disposed. In the present embodiment, the flow path of the refrigerant pipe 45 from the compressor 41 to the condenser is disposed on the inner surface of the outer case 60. In this flow path, a high temperature refrigerant is circulated by the compressor 41 of the refrigerant circuit 40, whereby condensation is suppressed.

<Heat insulation material>
The heat insulating material has a vacuum heat insulating material, and a foam heat insulating material 110 filled in the heat insulating space 57. As shown in FIG. 3, the vacuum heat insulating material includes a first vacuum heat insulating material 80, a second vacuum heat insulating material 90, and a third vacuum heat insulating material 100. In the present embodiment, as described later, two first vacuum heat insulating materials 80 are disposed adjacent to each other at the corner 56 of the housing 50. The second vacuum heat insulating material 90 is disposed in the heat insulating space 57 at the corner 56 of the housing 50. Further, the third vacuum heat insulating material 100 is disposed in the heat insulating space 57 in the peripheral portion 24 of the housing 50.

<First vacuum insulation material>
FIG. 6 is a perspective view schematically showing a first vacuum heat insulating material, a second vacuum heat insulating material, and a third vacuum heat insulating material of the refrigerator according to the first embodiment.

As shown in FIGS. 3 and 6, the first vacuum heat insulating material 80 has a plate shape. The first vacuum heat insulating material 80 is disposed on the inner surface of the outer case 60, and is attached to the outer case 60 with an adhesive or the like, for example. Further, the two first vacuum heat insulating materials 80 are disposed at an interval from each other at the corner 56 of the housing 50.

The first vacuum heat insulating material 80 has a plurality of (three in the present embodiment) first vacuum heat insulating materials 80 (rear side heat insulating material 81, left side heat insulating material 82, and right side heat insulating material 83). . The back side heat insulating material 81 is disposed in the back surface part 53, the left side heat insulating material 82 is disposed in the left side part 55, and the right surface side heat insulating material 83 is disposed in the right side part 54.

The back side heat insulating material 81 and the left side heat insulating material 82 are disposed adjacent to each other at the upper right corner 56 in FIG. 3. Further, the back side heat insulating material 81 and the right side heat insulating material 83 are disposed adjacent to each other at the upper left corner 56 in FIG. 3. The first vacuum heat insulating material 80 may be disposed on the top surface 51 of the casing 50 or may be disposed on the bottom surface 52. Here, that the two first vacuum heat insulating materials 80 are arranged adjacent to each other means that each of the two first vacuum heat insulating materials 80 is arranged on two adjacent surface parts, and the corner parts 56 It says that they cross each other. In other words, the two first vacuum heat insulating materials 80 are disposed across the corner 56 of the housing 50.

As the first vacuum heat insulating material 80, for example, a plate-like vacuum heat insulating material is used. In this case, the first vacuum heat insulating material 80 includes a core material (first core material 84), an adsorbent (not shown), and a covering material 85. The first core material 84 has a porous structure, and is formed of an inorganic fiber aggregate such as glass wool. The adsorbent adsorbs moisture and gas. The adsorbent may not be provided in the first vacuum heat insulating material 80.

As the covering material 85, a laminate film is used. The laminate film is formed of a member including, for example, a heat-weldable resin layer, a moisture-proof layer of polyethylene terephthalate or the like, and a laminated portion on which a gas barrier layer of aluminum foil or the like is laminated. The first core 84 and the adsorbent are disposed in the inside of the covering material 85, the inside is depressurized to a vacuum, and the end portions are heat-welded.

<Second vacuum insulation material>
As shown in FIGS. 3, 4 and 6, in the present embodiment, at least one second vacuum heat insulating material 90 is provided in the heat insulating space 57 of the housing 50. In the present embodiment, two second vacuum heat insulating materials 90 are provided. One of the second vacuum heat insulating materials 90 is disposed at the corner 56 in a region where the back surface 53 and the right surface 54 are connected. The other second vacuum heat insulating material 90 is disposed at the corner 56 in a region where the back surface portion 53 and the left surface portion 55 are connected. Hereinafter, one second vacuum heat insulating material 90 will be described. In addition, since the other 2nd vacuum heat insulating material 90 is the same as that of the one 2nd vacuum heat insulating material 90, the description is abbreviate | omitted.

The two first vacuum heat insulators 80 (the back surfaces in FIG. 4) are disposed so as to cross each other (orthogonally in the present embodiment) via the corner portions 56 of the housing 50. It arrange | positions inside the side heat insulating material 81 and the right side heat insulating material 83). The second vacuum heat insulating material 90 is an elongated member, and extends in the vertical direction along the corner 56 of the housing 50.

As shown in FIG. 6, the second vacuum heat insulator 90 has the same or substantially the same size as the first vacuum heat insulator 80 in the vertical direction. Therefore, the upper end of the second vacuum heat insulating material 90 does not protrude above the upper end of the first vacuum heat insulating material 80, and the lower end of the second vacuum heat insulating material 90 is lower than the lower end of the first vacuum heat insulating material 80. It does not protrude to the side. In addition, the second vacuum heat insulating material 90 is disposed to overlap the first vacuum heat insulating material 80 in the front-rear direction and the left-right direction.

The second vacuum heat insulating material 90 has an L-shaped cross section perpendicular to the direction in which the second vacuum heat insulating material 90 extends, and as shown in FIG. 4, two wall portions (a first wall portion 91 and a second wall portion Wall 92). The first wall portion 91 and the second wall portion 92 are long plate shapes extending in the vertical direction, respectively, and intersect each other (orthogonally in the present embodiment). In the present embodiment, the first wall 91 and the second wall 92 are integrally formed.

The first wall portion 91 of the second vacuum heat insulating material 90 is a flat plate extended in the vertical direction and the lateral direction, and is overlapped with the rear side heat insulating material 81. Here, as shown in FIG. 4, it is the rear surface of the first wall 91 that faces the outer case 60 (rear surface) and the front surface of the rear heat insulating material 81. The surface (the front side surface (first surface 81 b)) facing the inner box 70 is in contact with the surface. Further, an adhesive member 86 or the like is disposed on the contact surface, whereby the first wall portion 91 is fixed to the back side heat insulating material 81.

The second wall portion 92 of the second vacuum heat insulating material 90 is a flat plate extended in the vertical direction and the front-rear direction, and is overlapped with the right side heat insulating material 83. Here, as shown in FIG. 4, it is the surface on the right side of the second wall portion 92 that faces the outer case 60 (right surface) and the surface on the left side of the right side heat insulating material 83. The surface (left surface (first surface 83 b)) facing the inner case 70 is in contact with the inner case 70. In addition, an adhesive member 86 or the like is disposed on the contact surface, whereby the second wall 92 is fixed to the right heat insulating material 83.

Thus, the second vacuum heat insulator 90 covers between the two adjacent first vacuum heat insulators 80 at the corner 56 of the housing 50. Thereby, the heat transfer between the outer case 60 and the inner case 70 is prevented by the second vacuum heat insulator 90 between the two first vacuum heat insulators 80. Therefore, the heat insulation performance at the corner 56 of the housing 50 can be enhanced.

Further, as described above, the second vacuum heat insulating material 90 is disposed so as to be superimposed on each of the two first vacuum heat insulating materials 80, and the bonding member 86 or the like for the two first vacuum heat insulating materials 80. It is fixed by. Therefore, the integral thickness of the heat insulating material in the heat insulating space 57 is increased. Also, the second vacuum heat insulator 90 limits the movement of the two first vacuum heat insulators 80. Accordingly, the rigidity of the housing 50 is enhanced.

FIG. 7 is an exploded perspective view showing a second vacuum heat insulating material. FIG. 8 is a perspective view showing a second vacuum heat insulating material. FIG. 9A is a cross-sectional view of the case of the second vacuum heat insulating material as viewed from above. Moreover, FIG. 9B is sectional drawing to which a part of case of the 2nd vacuum heat insulating material in FIG. 9A was expanded.

As shown in FIGS. 7 to 9B, the second vacuum heat insulating material 90 includes a case (first case 93), a lid (first lid 94), a core (second core 95), and an adsorbent (first adsorption). Agent 96). The second core material 95 and the first adsorbent 96 are enclosed in the internal space formed by the first case 93 and the first lid 94, and the internal space is maintained in a state of being decompressed to a predetermined degree of vacuum. There is.

The first case 93 has a tubular shape. In the present disclosure, the cylindrical shape refers to a columnar shape having a hollow inside, that is, a hollow pillar shape. The first case 93 is, for example, long and has an L-shaped cross section orthogonal to the extending direction. The first case 93 is a molded product having a desired shape. The first case 93 has an opening (second opening 97) at each of both ends.

The first case 93 is formed of a laminated portion in which a gas barrier layer 93a, an adhesive layer 93b, and a water barrier layer 93c are laminated in this order. The gas barrier layer 93a is disposed on the inner side of the water barrier layer 93c, and is formed of an organic resin. The organic resin may be, for example, an ethylene-vinyl alcohol copolymer or a polyvinyl alcohol polymer. Further, the gas barrier layer 93a may be formed of an organic resin and a scale-like inorganic material, and examples of the scale-like inorganic material include montmorillonite which is a main component of natural clay mineral bentonite, and montmorillonite which has been subjected to ion exchange treatment. Or synthetic silica. The water barrier layer 93 c is formed of a resin such as polypropylene. The adhesive layer 93 b is a layer for adhering the gas barrier layer 93 a and the water barrier layer 93 c, and is formed of a resin such as adhesive polyolefin (modified polyolefin).

However, the laminated portion is composed of two layers among the three layers of the gas barrier layer 93a, the water barrier layer 93c and the adhesive layer 93b (for example, the water barrier layer 93c and the adhesive layer 93b, the gas barrier layer 93a and the adhesive layer 93b) May be The laminated portion may further include layers other than the three layers of the gas barrier layer 93a, the water barrier layer 93c, and the adhesive layer 93b.

Two first lids 94 are provided for one first case 93 so as to cover the second openings 97 at both ends of the first case 93. The first lid 94 has, for example, a recess in which the end of the first case 93 is fitted. The end of the first case 93 is fitted in the recess, and the second opening 97 provided at the end of the first case 93 is covered by the first lid 94. Thereby, the internal space formed by the first case 93 and the first cover 94 is sealed.

Similarly to the first case 93, the first lid 94 may be a molded product formed of a member including a laminated portion of the gas barrier layer 93a, the adhesive layer 93b, and the water barrier layer 93c. The first lid 94 may be formed of a laminate film of a thermoplastic resin. In this case, the laminate film may have a metal layer such as aluminum or stainless steel. The metal layer may be a metal foil such as an aluminum foil, or may be formed by vapor-depositing aluminum or the like on the surface of the laminate film.

The second core material 95 is formed by foam molding, and may be made of, for example, an open-celled urethane foam. The open cell urethane foam may have, for example, the features disclosed in Patent Document 2. In this case, the second core member 95 is formed in the same shape as the shape along the inner surface of the first case 93 (the shape of the internal space of the first case 93), and is elongated. In addition, as the second core material 95, for example, phenol foam, glass fiber, rock wool, alumina fiber, or polyethylene terephthalate fiber may be used.

In such a second vacuum heat insulating material 90, the first case 93 is formed by extrusion. Then, the second core material 95 and the first adsorbent 96 are inserted into the first case 93 from the second opening 97. After the pressure in the internal space of the first case 93 is reduced to a predetermined degree of vacuum, the second opening 97 is covered with the first lid 94. Thereby, the first case 93 can be formed to an arbitrary length. Therefore, different molds and the like do not need to be used for each of the second vacuum heat insulating materials 90 having different lengths, and an increase in manufacturing cost can be suppressed.

<Third vacuum insulation material>
The refrigerator 10 has at least one third vacuum heat insulating material 100.

FIG. 5 is an enlarged cross-sectional view of the periphery of the right side of the main body in FIG.

In the present embodiment, as shown in FIGS. 3, 5 and 6, two third vacuum heat insulating materials 100 are provided in the housing 50. The two third vacuum heat insulating materials 100 are disposed at positions where the first openings 22 are sandwiched between each other in the left-right direction. One third vacuum heat insulator 100 of the two third vacuum heat insulators 100 is disposed at the front end of the right side 54 and the other third vacuum insulator 100 is disposed at the front end of the left side 55 ing. Hereinafter, one third vacuum heat insulating material 100 will be described. In addition, since the other 3rd vacuum heat insulating material 100 is the same as that of the one 3rd vacuum heat insulating material 100, the description is abbreviate | omitted.

As shown in FIG. 6, the third vacuum heat insulating material 100 is a long member. The third vacuum heat insulating material 100 extends in the vertical direction in parallel with the second vacuum heat insulating material 90. The length in the vertical direction of the third vacuum heat insulating material 100 is longer than the length in the vertical direction of each of the first vacuum heat insulating material 80 and the second vacuum heat insulating material 90. Therefore, the third vacuum heat insulating material 100 protrudes upward and downward relative to the first vacuum heat insulating material 80 and the second vacuum heat insulating material 90. Thereby, the rigidity in the vertical direction of the main body 20 is enhanced.

The third vacuum heat insulating material 100 has an L-shaped cross section perpendicular to the direction in which the third vacuum heat insulating material 100 is extended. The 3rd vacuum heat insulating material 100 has two wall parts (the 3rd wall part 101 and the 4th wall part 102). The third wall portion 101 and the fourth wall portion 102 each have a long plate shape extending in the vertical direction, and cross each other (orthogonally in the present embodiment). The third wall 101 and the fourth wall 102 are integrally formed.

The third wall portion 101 of the third vacuum heat insulating material 100 is extended in the vertical direction and the front-rear direction. The third wall portion 101 is disposed to overlap the right side heat insulating material 83. Here, as shown in FIG. 5, it is the right side surface of the third wall portion 101 that faces the outer case 60 (right side surface) and the left side surface of the right side heat insulating material 83 The surface (left side surface) opposite to the outer case 60 is in contact. In addition, an adhesive member 86 or the like is disposed on this contact surface, whereby the third wall portion 101 is fixed to the right side heat insulating material 83.

The fourth wall portion 102 of the third vacuum heat insulating material 100 is extended in the vertical direction and the lateral direction. The fourth wall portion 102 is disposed at a position sandwiched between the right side heat insulating material 83 and the peripheral portion 24. Here, as shown in FIG. 5, the surface (rear surface) of the fourth wall 102 and the surface of the right side heat insulating material 83 that is the front surface facing the peripheral edge 24 ( It is in contact with the front side surface (second surface 83c). In addition, an adhesive member 86 or the like is disposed on this contact surface, whereby the third wall portion 101 is fixed to the right side heat insulating material 83.

Thus, the third vacuum heat insulating material 100 is bonded to the front end of the right side heat insulating material 83. Further, the rear end of the right side heat insulating material 83 is bonded to the second vacuum heat insulating material 90. Thereby, the movement of the right side heat insulating material 83 is limited, and the rigidity of the housing 50 is further enhanced.

Further, the third vacuum heat insulating material 100 is provided in contact with the peripheral portion 24 of the housing 50 surrounding the periphery of the first opening 22. Therefore, the peripheral portion 24 is reinforced by the third vacuum heat insulating material 100, and the rigidity of the housing 50 is enhanced. Furthermore, the thickness of the heat insulating material integrally fixed in the heat insulating space 57 is increased by overlapping and arranging the third vacuum heat insulating material 100 on the right side heat insulating material 83. Accordingly, the heat insulation at the peripheral portion 24 is enhanced.

The third vacuum heat insulating material 100 includes a case (second case 103), a lid (second lid, not shown), a core (third core 105) and an adsorbent (second adsorbent, not shown). Have. The second case 103 is similar to the first case 93, the second lid is similar to the first lid 94, the third core 105 is similar to the second core 95, and the second adsorbent is the first. It is the same as the adsorbent 96. Therefore, these explanations are omitted.

<Foam insulation>
As shown in FIGS. 1 to 5, the foamed heat insulating material 110 is disposed in the heat insulating space 57 between the first vacuum heat insulating material, the second vacuum heat insulating material, and the third vacuum heat insulating material, and the housing 50. ing. In the present embodiment, the foam insulation material 110 is filled in the heat insulation space 57. For example, a rigid polyurethane foam is used for the foam insulation 110. The rigid polyurethane foam is obtained by injecting a stock solution such as a polyol component, an isocyanate component, and a foaming agent into the housing 50 and reacting while the stock solution is foamed in the heat insulation space 57 of the housing 50.

FIG. 10 is a perspective view of the refrigerator according to the first embodiment as viewed from the rear side. FIG. 11 is a view of the refrigerator according to the first embodiment viewed from the rear side.

As shown in FIG. 2, FIG. 10 and FIG. 11, the inlet 61 for the stock solution to be injected is disposed on the back surface of the back surface 53 of the case 50 (that is, the outer box 60 of the back surface 53). . The inlet 61 is disposed above or below the first vacuum heat insulating material 80 and the second vacuum heat insulating material 90 disposed in the back surface portion 53. In addition, while the undiluted | stock solution is inject | poured into the heat insulation space 57 of the housing | casing 50, the discharge port (not shown) in which the air of the heat insulation space 57 is discharged | emitted may be provided in the housing | casing 50.

The inlet 61 is located between the upper end of the first vacuum heat insulating material 80 and the second vacuum heat insulating material 90 and the upper end of the back portion 53 or the first vacuum heat insulating material 80 when the refrigerator 10 is viewed from the rear side. It is disposed between the lower end of the second vacuum heat insulating material 90 and the lower end of the back surface portion 53. Thus, the inlet 61 does not overlap the first vacuum heat insulator 80 and the second vacuum heat insulator 90 in the vertical direction. Therefore, the injection port 61 is not blocked by the first vacuum heat insulating material 80 and the second vacuum heat insulating material 90, and is communicated with the heat insulating space 57 in the back surface portion 53. Then, the heat insulating space 57 of the back surface portion 53 is in communication with all the heat insulating spaces 57 of the housing 50, whereby the injection port 61 is in communication with the heat insulating space 57 of the housing 50.

The housing 50 is provided with at least one inlet 61. The at least one inlet 61 may be a plurality of (for example, four in the present embodiment) inlets 61. The four inlets 61 are disposed at the upper right, the upper left, the lower right, and the lower left on the back side of the housing 50 so as to be in communication with each other through the heat insulating space 57. The first vacuum heat insulating material 80 and the second vacuum heat insulating material 90 are arranged at positions sandwiched by the upper right inlet 61 and the lower right inlet 61 arranged in the vertical direction. Further, the first vacuum heat insulating material 80 and the second vacuum heat insulating material 90 are arranged in the vertical direction, and are disposed at positions sandwiched between the upper left inlet 61 and the lower left inlet 61. As a result, the plurality of injection ports 61 are arranged in the housing 50 in a state of being spaced apart from one another.

Next, the filling of the foamed heat insulating material 110 will be described.

First, the first vacuum heat insulating material 80 is fixed to the inner surface of the outer case 60 by the bonding member 86. The second vacuum heat insulator 90 and the third vacuum heat insulator 100 are fixed to the first vacuum heat insulator 80 by the bonding member 86. An inner case 70 is combined with the outer case 60 to form a case 50. In addition, the housing 50 is heated to a predetermined temperature. Then, the peripheral portion 24 of the housing 50 is disposed downward, and the rear portion 53 is disposed upward. And the undiluted | stock solution of the foaming heat insulating material 110 is inject | poured into the heat insulation space 57 from the injection port 61 of the back surface part 53. As shown in FIG.

When the stock solution is injected simultaneously from the four inlets 61, the components of the stock solution react with each other while colliding with each other. In addition, the undiluted solution is pressurized by the bubbling pressure and spreads to the heat insulating space 57 in the housing 50. Thereby, the foam heat insulating material 110 is more uniformly filled in the housing 50.

Here, the injection port 61 at the upper right is disposed on the upper side of the right end of the back side heat insulating material 81, and the injection port 61 at the lower right is disposed below the right end of the back side heat insulating material 81. Therefore, even if the heat insulating space 57 (the heat insulating space 57 at the corner portion 56) between the second vacuum heat insulating material 90 and the outer case 60 on the right side of the back side heat insulating material 81 is narrow, the foam heat insulating material The 110 is properly filled in the adiabatic space 57. In addition, since the upper left and lower left inlets 61 are also similar to the upper right and lower right inlets 61, the description thereof is omitted.

Also, the corner portion of the inner box 70 facing the second vacuum heat insulating material 90 is smoothly curved as described above. The inner box 70 is extended from the corner to the back surface 53 and the right surface 54. Thereby, the undiluted solution injected from the upper side and the lower side of the second vacuum heat insulating material 90 passes through the heat insulating space 57 between the second vacuum heat insulating material 90 and the inner case 70 and along the inner case 70, The heat insulating space 57 of the back surface portion 53 and the right surface portion 54 smoothly flows and is filled.

At the corner portion 56 of the housing 50, the foamed heat insulating material 110, the second vacuum heat insulating material 90, and the foamed heat insulating material 110 are arranged in this order between the outer case 60 and the inner case 70 in an overlapping manner. Thereby, the heat insulation performance in the corner 56 of the housing 50 is enhanced. In addition, the housing 50 is reinforced, and the rigidity of the main body 20 is improved.

Second Embodiment
In the refrigerator 10 according to the second embodiment, the dimension of the second vacuum heat insulating material 90 a and the position of the inlet 61 a are different from those of the second vacuum heat insulating material 90 and the inlet 61 of the refrigerator 10 according to the first embodiment. . The other configuration according to the second embodiment and the operation and effects thereof are the same as those of the first embodiment, and thus the description thereof is omitted.

FIG. 12 is a rear view of the refrigerator according to the second embodiment of the present disclosure. FIG. 13 is a perspective view schematically showing a first vacuum heat insulating material, a second vacuum heat insulating material, and a third vacuum heat insulating material of the refrigerator according to the second embodiment.

The length in the vertical direction of the second vacuum heat insulating material 90 a is the same as or substantially the same as the length in the vertical direction of the third vacuum heat insulating material 100, and is longer than the length in the vertical direction of the first vacuum heat insulating material 80. The position of the upper end of the second vacuum heat insulating material 90 a is equal to or substantially the same as the position of the upper end of the third vacuum heat insulating material 100, and is above the position of the upper end of the first vacuum heat insulating material 80. Further, the position of the lower end of the second vacuum heat insulating material 90 a is equal to or substantially the same as the position of the lower end of the third vacuum heat insulating material 100, and is disposed below the position of the lower end of the first vacuum heat insulating material 80. Therefore, the second vacuum heat insulating material 90a, together with the third vacuum heat insulating material 100, reinforces the casing 50 of the main body 20 in the vertical direction, and the rigidity of the main body 20 is enhanced.

In the present embodiment, as shown in FIG. 12, the injection port 61a is between the two second vacuum heat insulating materials 90a, and between the upper end of the first vacuum heat insulating material 80 and the upper end of the back portion 53, Alternatively, it is disposed between the lower end of the first vacuum heat insulating material 80 and the lower end of the back surface portion 53.

The housing 50 is provided with at least one inlet 61a. The at least one inlet 61a may be a plurality of (for example, four in the present embodiment) inlets 61a. The first vacuum heat insulating material 80 is positioned between the upper right inlet 61a and the lower right inlet 61a and the upper left inlet 61a and the lower left inlet 61a in the vertical direction. It is arranged. Further, the four inlets 61a are disposed at positions sandwiched between the two second vacuum heat insulating materials 90a in the left-right direction.

Thus, the inlet 61 a is not blocked by the first vacuum heat insulating material 80 and the second vacuum heat insulating material 90 a, and is in communication with the heat insulating space 57 of the housing 50. Further, the four inlets 61 a are disposed in the housing 50 in a state where they are spaced from each other. Therefore, the undiluted | stock solution of the foaming heat insulating material 110 inject | poured from the injection port 61a flows in into the heat insulation space 57, and the foam heat insulation material 110 is uniformly filled in the heat insulation space 57. FIG.

Also in the refrigerator 10 according to the present embodiment, the decrease in the heat insulation performance at the corner portion 56 of the housing 50 is reduced by having the second vacuum heat insulating material 90 a.

Third Embodiment
In the refrigerator 10 according to the third embodiment, the dimensions of the first vacuum heat insulating material 80a and the third vacuum heat insulating material 100a and the position of the inlet 61b are the first vacuum heat insulating material of the refrigerator 10 according to the first embodiment. 80, the third vacuum heat insulating material 100 and the inlet 61 are different from each other. The other configuration according to the third embodiment and the operation and effects thereof are the same as those of the first embodiment, and thus the description thereof is omitted.

FIG. 14 is a rear view of the refrigerator according to the third embodiment of the present disclosure. FIG. 15 is a perspective view schematically showing a first vacuum heat insulating material, a second vacuum heat insulating material, and a third vacuum heat insulating material of the refrigerator according to the third embodiment.

The lengths in the vertical direction of the second vacuum heat insulator 90 and the third vacuum heat insulator 100a are shorter than the lengths in the vertical direction of the first vacuum heat insulator 80a. The positions of the upper ends of the second vacuum heat insulator 90 and the third vacuum heat insulator 100a are respectively below the position of the upper end of the first vacuum heat insulator 80a. Further, the positions of the lower ends of the second vacuum heat insulator 90 and the third vacuum heat insulator 100a are respectively above the position of the lower end of the first vacuum heat insulator 80a. In addition, the length in the vertical direction of the second vacuum heat insulating material 90 is the same as or substantially the same as the length of the third vacuum heat insulating material 100a. Also in this case, since the second vacuum heat insulating material 90 is fixed to the first vacuum heat insulating material 80a together with the third vacuum heat insulating material 100a, the movement of the first vacuum heat insulating material 80a is restricted. The rigidity of the

In the present embodiment, as shown in FIG. 14, the inlets 61 b are on both ends with respect to the first vacuum heat insulating material 80 a, and between the upper end of the second vacuum heat insulating material 90 and the upper end of the back portion 53, Alternatively, it is disposed between the lower end of the second vacuum heat insulating material 90 and the lower end of the back surface portion 53.

The housing 50 is provided with at least one inlet 61 b. The at least one inlet 61 b may be a plurality of (for example, four in the present embodiment) inlets 61 b. The second vacuum heat insulating material 90 is disposed at a position between the upper right inlet 61 b and the lower right inlet 61 b and between the upper left inlet 61 b and the lower left inlet 61 b arranged in the vertical direction. It is arranged. Further, the first vacuum heat insulating material 80a is disposed between the upper right inlet 61b and the upper left inlet 61b aligned in the left-right direction, and the lower right inlet 61b and the lower left inlet 61b aligned in the left-right direction. It is disposed at a position to be sandwiched between.

Thus, the inlet 61 b is not blocked by the first vacuum heat insulating material 80 a and the second vacuum heat insulating material 90, and is in communication with the heat insulating space 57 of the housing 50. Further, the four inlets 61 b are disposed in the housing 50 in a state of being spaced apart from one another. Therefore, the undiluted solution of the foamed heat insulating material 110 injected from the injection port 61 b flows into the heat insulating space 57, and the foamed heat insulating material 110 is more uniformly filled in the heat insulating space 57.

Further, as in the present embodiment, in the outer case 60 of the housing 50, positions corresponding to the first vacuum heat insulating material 80a and the second vacuum heat insulating material 90, that is, the sides of the first vacuum heat insulating material 80a, and By providing the inlet 61b above or below the second vacuum heat insulating material 90, the dimension of the first vacuum heat insulating material 80a can be increased within the dimension in the vertical direction of the housing 50. Therefore, the heat insulation performance of the main body 20 is improved.

Also in the refrigerator 10 according to the present embodiment, the decrease in the heat insulation performance at the corner portion 56 of the housing 50 is reduced by having the second vacuum heat insulator 90.

(Modification)
FIG. 16 is a perspective view schematically showing a first vacuum heat insulator, a second vacuum heat insulator, a third vacuum heat insulator, and a fourth vacuum heat insulator in a modification of the present disclosure.

As shown in FIGS. 2 and 16, the refrigerator 10 according to the modification of the third embodiment further includes a fourth vacuum heat insulating material 120. The fourth vacuum heat insulating material 120 is provided in the heat insulating space 57 of the back surface portion 53, and extends in the left-right direction orthogonal to the second vacuum heat insulating material 90. The fourth vacuum heat insulating material 120 includes a case (third case), a lid (third lid), a core material (fourth core material), and an adsorbent (third adsorbent). The third case is similar to the first case 93, the third lid is similar to the first lid 94, the fourth core is similar to the second core 95, and the third adsorbent is the first adsorbent. Similar to 96. Therefore, the description thereof is omitted.

The fourth vacuum heat insulating material 120 is a long member, and the shape of the cross section orthogonal to the extending direction is an L-shape. The fourth vacuum heat insulating material 120 has two wall portions (fifth wall portion 121 and sixth wall portion 122). The fifth wall portion 121 and the sixth wall portion 122 each have a long plate shape extended in the left-right direction, and cross each other (in this embodiment, at right angles). In the present embodiment, the fifth wall 121 and the sixth wall 122 are integrally formed.

In the present embodiment, the refrigerator 10 has two fourth vacuum heat insulating materials 120. One of the fourth vacuum heat insulators 120 is disposed above the first vacuum heat insulator 80a, and the other fourth vacuum heat insulator 120 is disposed below the first vacuum heat insulator 80a. There is.

The upper fourth vacuum heat insulating material 120 is disposed, for example, along a recess (upper mechanical chamber 25 (see FIG. 2)) provided at the rear upper corner of the main body 20. The fifth wall 121 of the fourth vacuum heat insulating material 120 is bonded to the rear surface of the outer case 60 defining the upper mechanical chamber 25. Further, the sixth wall portion 122 is adhered to the upper surface of the outer case 60 which defines the upper mechanical chamber 25. Thereby, the upper part of the housing 50 is reinforced by the upper fourth vacuum heat insulating material 120, and the rigidity of the main body 20 is enhanced.

The lower fourth vacuum heat insulating material 120 is disposed, for example, along a recess (lower mechanical chamber 26 (see FIG. 2)) provided at the lower corner of the main body 20. The fifth wall 121 of the fourth vacuum heat insulating material 120 is bonded to the rear surface of the outer case 60 above the lower machine room 26. Further, the sixth wall portion 122 is bonded to the lower surface of the outer case 60 which defines the lower mechanical chamber 26. Thereby, the lower part of the housing 50 is reinforced by the lower fourth vacuum heat insulating material 120, and the rigidity of the main body 20 is further enhanced.

Thus, the second vacuum heat insulating material 90 and the fourth vacuum heat insulating material 120 are provided in the main body 20 (FIG. 1) orthogonal to each other. This suppresses the lowering of the door 30 due to the unbalance of the door 30 (FIG. 1) and the reduction of the slidability of the door 30 due to the unbalance of the main body 20.

In addition, the 4th vacuum heat insulating material 120 which concerns on this modification may be provided in the refrigerator 10 which concerns on Embodiment 1 and Embodiment 2. FIG. Also in this case, the rigidity of the main body 20 in the refrigerator 10 is enhanced.

Embodiment 4
In the refrigerator 10 according to the fourth embodiment, the shape of the second vacuum heat insulating material 90 b is different from the shape of the second vacuum heat insulating material 90 of the refrigerator 10 according to the first embodiment. The other configuration according to the fourth embodiment and the operation and effects thereof are the same as those of the first embodiment, and thus the description thereof is omitted.

FIG. 17 is a cross-sectional view of the refrigerator according to the fourth embodiment of the present disclosure, taken along line XVII-XVII in FIG. FIG. 18 is an enlarged cross-sectional view of the corner on the right side of the main body in FIG.

As shown in FIGS. 17 and 18, the second vacuum heat insulating material 90 b has a convex portion 98. The first wall portion 91 and the second wall portion 92 and the convex portion 98 of the second vacuum heat insulating material 90 b are integrally formed. The convex portion 98 has, for example, a rectangular parallelepiped shape, and is extended in the vertical direction at the corner portion 56 of the housing 50.

The convex portion 98 of the second vacuum heat insulating material 90 b is projected toward the outer case 60 and is disposed between the two first vacuum heat insulating materials 80 which are disposed to intersect with each other (in the present embodiment, orthogonally). It is arranged. In the second vacuum heat insulating material 90b disposed at the corner 56 on the right side, the convex portion 98 is the inner surface of the outer case 60 of the back surface portion 53, the inner surface of the outer case 60 of the right surface portion 54, and the rear surface side. The right side of the heat insulator 81 and the rear side of the right side heat insulator 83 are in contact with each other. The convex portion 98 is bonded at each of these contact surfaces by a bonding member 86 or the like. Thereby, the heat insulation space 57 of the corner part 56 on the right side is filled with the convex part 98, and the rigidity and the heat insulation performance of the main body 20 at the corner part 56 are improved. The second vacuum heat insulating material 90b disposed in the left corner 56 is the same as the second vacuum heat insulating material 90b disposed in the right corner 56, and thus the description thereof will be omitted.

In addition, also in the refrigerator 10 which concerns on this Embodiment, the 4th vacuum heat insulating material 120 shown in FIG. 16 may be provided. Also in this case, the rigidity of the main body 20 in the refrigerator 10 is enhanced.

(Other embodiments)
In the above embodiments, the second vacuum heat insulators 90, 90a, 90b are L-shaped in cross section perpendicular to the extending direction, but the present invention is not limited to this shape.

FIG. 19A is a cross-sectional view showing an example of a second vacuum heat insulating material according to another embodiment of the present disclosure. FIG. 19B is a cross-sectional view showing another example of the second vacuum heat insulating material according to the other embodiment.

As shown in FIG. 19A, for example, the shape of the cross section orthogonal to the extending direction of the second vacuum heat insulating material 90c may be a triangle. In addition, as shown in FIG. 19B, the second vacuum heat insulating material 90d may have a rectangular cross section orthogonal to the extending direction.

Similarly, in all the above embodiments, the third vacuum heat insulating material 100 and the fourth vacuum heat insulating material 120 have an L-shaped cross section perpendicular to the direction in which the third vacuum heat insulating material 100 and the fourth vacuum heat insulating material 120 extend. It is not limited.

In the above embodiments, the main body 20 is provided with the third vacuum heat insulating material 100 or 100a, but they may not be provided.

Further, in all the embodiments described above, two third vacuum heat insulating materials 100 extended in the vertical direction are provided at positions where the first opening 22 is sandwiched between them in the horizontal direction. On the other hand, two third vacuum heat insulating materials 100 extending in the left-right direction may be provided at positions where the first opening 22 is sandwiched between them in the vertical direction.

In the first embodiment and the second embodiment, although the length in the vertical direction of the third vacuum heat insulating material 100 is longer than the length in the vertical direction of the first vacuum heat insulating material 80, the vertical direction of the first vacuum heat insulating material 80 It may be the same as or shorter than the length in In the third embodiment and its modification, the length in the vertical direction of the third vacuum heat insulating material 100a is shorter than the length in the vertical direction of the first vacuum heat insulating material 80a, but in the vertical direction of the first vacuum heat insulating material 80a. It may be the same as or longer than the length.

In the above embodiments, the first vacuum heat insulating material 80, 80a is formed of a vacuum heat insulating material in which a film is used as a covering material, but other materials such as a vacuum heat insulating material in which a molded case is used It may be formed of a vacuum heat insulating material of In addition, the second vacuum heat insulators 90, 90a, 90b, 90c, 90d, the third vacuum heat insulators 100, 100a, and the fourth vacuum heat insulator 120 are vacuum heat insulators in which a molded case is used. Although formed, it may be formed of another vacuum heat insulating material such as a vacuum heat insulating material in which a film is used as a covering material.

From the above description, many modifications and other embodiments of the present disclosure will be apparent to those skilled in the art. Accordingly, the above description should be taken as exemplary only, and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the present disclosure. The details of at least one of the structure and function may be substantially changed without departing from the scope of the present disclosure. In addition, various disclosures can be formed by appropriate combinations of the plurality of components disclosed in the above-described embodiments.

The refrigerator according to the present disclosure and the method for manufacturing the same can reduce the decrease in the heat insulation performance at the corner of the main body, and thus are useful for various refrigerators and the like.

10 refrigerator 20 main body 21 internal space 22 first opening (opening)
23 partition wall 24 peripheral portion 25 upper machine room 26 lower machine chamber 30 door 31 hinge 40 refrigerant circuit 41 compressor 42 evaporator 50 casing 51 top surface portion 52 bottom surface portion 53 back surface portion 54 right surface portion 55 left surface portion 56 corner portion 57 Heat insulation space (heat insulation area)
60 outer case 61, 61a, 61b inlet 70 inner case 80, 80a first vacuum heat insulating material 81, 81a rear side heat insulating material 81b first surface 82, 82a left side heat insulating material 83, 83a right surface side heat insulating material 83b first Surface 83c Second surface 84 First core material 85 Coating material 86 Bonding members 90, 90a, 90b, 90c, 90d Second vacuum heat insulating material 91 First wall 92 Second wall 93 First case 93a Gas barrier layer 93b Adhesive layer 93 c Water barrier layer 94 first lid (lid)
95 2nd core material (core material)
96 first adsorbent 97 opening (second opening)
98 convex part 100, 100a third vacuum heat insulating material 101 third wall part 102 fourth wall part 103 second case 105 third core material 110 foam heat insulating material 120 fourth vacuum heat insulating material

Claims (11)

1. A box-shaped case having an outer case and an inner case and having an opening;
   A heat insulating area surrounded by the outer case and the inner case;
   Two first vacuum heat insulating materials disposed in the heat insulating area across the corner of the housing;
   And a second vacuum heat insulating material disposed in the heat insulating area and extended along the corner.
   The second vacuum heat insulating material is in contact with the first surface of each of the two first vacuum heat insulating materials facing the inner box.
   refrigerator.
2. The refrigerator according to claim 1, wherein the second vacuum heat insulating material has an L-shaped, triangular or rectangular cross-sectional shape perpendicular to the extending direction.
3. The second vacuum heat insulating material is
   The refrigerator according to claim 1, further comprising a convex portion disposed between the two first vacuum heat insulating materials and protruding toward the outer case.
4. It further comprises a third vacuum heat insulating material disposed in the heat insulating area,
   The housing has a peripheral portion surrounding the periphery of the opening,
   The third vacuum heat insulating material is in contact with a second surface of the first vacuum heat insulating material of one of the two first vacuum heat insulating materials facing the peripheral portion. The refrigerator as described in any one.
5. It further comprises a fourth vacuum heat insulating material disposed in the heat insulating area opposite to the side where the opening is disposed,
   The refrigerator according to any one of claims 1 to 4, wherein the fourth vacuum heat insulating material is extended in a direction orthogonal to the second vacuum heat insulating material.
6. The refrigerator according to any one of claims 1 to 5, further comprising a foam insulation disposed in the heat insulation area.
7. It further comprises an inlet provided in the outer case and into which the undiluted solution of the foam insulation material is injected,
   The refrigerator according to claim 6, wherein the inlet is disposed at a position not overlapping the two first vacuum heat insulating materials and the second vacuum heat insulating material when the outer case is viewed from one side. .
8. The inlet comprises a plurality of inlets,
   In the case where the outer case is viewed from the one side, the first two of the plurality of injection ports are adjacent to each other in a direction in which the second vacuum heat insulating material extends. The refrigerator according to claim 7, wherein one of the vacuum heat insulating materials and the second vacuum heat insulating material are disposed.
9. The inlet comprises a plurality of inlets,
   The second vacuum heat insulating material comprises two second vacuum heat insulating materials,
   When the outer case is viewed from the one side,
   The first vacuum insulation of one of the two first vacuum insulations between two injections adjacent to each other in the direction in which the second vacuum insulation extends among the plurality of injections Materials are placed, and
   The refrigerator according to claim 7, wherein two inlets adjacent to each other in a direction orthogonal to a direction in which the second vacuum heat insulating material extends are disposed between the two second vacuum heat insulating materials.
10. The inlet comprises a plurality of inlets,
    When the outer case is viewed from the one side,
    The second vacuum heat insulating material is disposed between two inlets adjacent to each other in a direction in which the second vacuum heat insulating material extends.
    A first vacuum insulator of one of the two first vacuum insulators is disposed between two inlets adjacent to each other in a direction orthogonal to the direction in which the second vacuum insulator extends. The refrigerator according to claim 7.
11. A box-shaped case having an outer case and an inner case and having an opening;
    A heat insulating area surrounded by the outer case and the inner case;
    Two first vacuum heat insulating materials disposed in the heat insulating area across the corner of the housing;
    And a second vacuum heat insulating material disposed in the heat insulating area and extended along the corner.
    The second vacuum heat insulating material has a hollow columnar case, and is in contact with the first surface of each of the two first vacuum heat insulating materials facing the inner box. There,
    Forming the case by extrusion;
    Inserting a core into the case;
    And a step in which the openings at both ends of the case are respectively covered by a lid.

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