JP2014031904A - Refrigerator - Google Patents

Abstract

Provided is a refrigerator in which a vacuum heat insulating material is hardly damaged and a storage capacity can be increased by using the vacuum heat insulating material.
A refrigerator according to an embodiment includes an outer plate 51, 61 made of a metal member, an inner plate 52, 62, and a vacuum disposed between the outer plate 51, 61 and the inner plate 52, 62. It has a heat insulating box configured by connecting the side ends of a plurality of plate-like bodies 5 and 9 provided with heat insulating materials 55a and 65, and this heat-insulating box is connected to the adjacent plate-like bodies 5 and 9 In this structure, the connecting portions are joined by spot welding 70.
[Selection] Figure 7

Description

  Embodiments of the present invention relate to a refrigerator.

  In order to improve the heat insulation performance and save energy, the refrigerator is configured by sandwiching a heat insulating material in a space between an outer box and an inner box constituting a heat insulating box body serving as a refrigerator main body. And, as this heat insulating material, conventionally, a foamed and hardened liquid foam heat insulating material made of hard urethane foam or the like has been used. However, in recent years, the heat insulating effect is larger and thinner than this foam heat insulating material. The use of vacuum heat insulating materials that can be converted is being considered.

JP 2006-90649 A

  A vacuum heat insulating material is the structure which vacuum-packed the core material with the thin envelope film. This vacuum heat insulating material is superior in heat insulating performance to foamed urethane, but the outer packaging film is easily damaged, and when it is damaged due to scratches, the heat insulating performance is remarkably reduced.

  This invention is made | formed in view of the said technical subject, and it aims at providing the refrigerator which can increase a storage capacity using a vacuum heat insulating material while it is hard to damage a vacuum heat insulating material.

  The embodiment is configured by connecting a plurality of plate-like bodies provided with an outer plate, an inner plate, and a vacuum heat insulating material disposed between the outer plate and the inner plate in a box shape having a front opening. A refrigerator having a heat insulating box, wherein the heat insulating box is formed by connecting the connecting portions with adjacent plate-like bodies by welding.

It is a perspective view of the refrigerator in 1st and 2nd embodiment. It is a perspective view from the back of the said refrigerator which removed the upper surface cover. It is a perspective view of the state which removed the door of the said refrigerator. It is a perspective view from the back which shows the state which removed the upper surface plate-like object of the above-mentioned refrigerator. It is a vertical sectional view of the width direction in the upper surface plate-like body. It is a perpendicular | vertical sectional view of the depth direction in the said upper surface plate-shaped object. It is sectional drawing which shows the connection part of the said upper surface plate-shaped body and a right side plate-shaped body. It is a perspective view from the back which shows the state which removed the upper surface plate-like object of the refrigerator in a 2nd embodiment. It is a disassembled perspective view of the right side plate-shaped object in 2nd Embodiment. It is sectional drawing of the right side plate-shaped object in 2nd Embodiment. It is sectional drawing which shows the connection part of the said upper surface plate-shaped body and right side plate-shaped body in 2nd Embodiment.

  Hereinafter, embodiments will be described in detail with reference to the drawings.

(First embodiment)
The refrigerator 1 of 1st Embodiment is shown in FIGS. The refrigerator 1 of this embodiment is a heat insulating box 3 configured by connecting ends of a plurality of plate-like bodies configured by sandwiching a vacuum heat insulating material between an outer plate and an inner plate in a box shape having an opening on the front surface. It has.

  On the front opening side of the heat insulation box 3, the folding door type refrigerator compartment doors 15 and 16, the drawer type vegetable compartment door 17, the drawer type ice making room door 19, the drawer type first freezer compartment door 21, and the drawer A second freezer compartment door 23 of the type is attached. The second freezer compartment door 23 is provided alongside the ice making compartment door 19. And in the space corresponding to the back side of these refrigerator compartment doors 15 and 16, the vegetable compartment door 17, the ice making compartment door 19, the first freezer compartment door 21 and the second freezer compartment door 23 in the heat insulating box 3. A refrigeration room, a vegetable room, an ice making room, a first freezing room, and a second freezing room are provided.

  The heat insulating box 3 includes an upper surface plate-like body 5 constituting an upper surface wall serving as a ceiling, a bottom surface plate-like body 7 constituting a bottom wall, a right side plate-like body 9 constituting a right side wall, and a left side plate shape constituting a left side wall. It comprises a body 11 and a back plate-like body 13 constituting the back wall. And the heat insulation box 3 is comprised by connecting the outer plates of each plate-shaped body by spot welding. In each figure, a black dot indicates a spot welding point or a spot welding position.

  As shown in FIG. 4, the upper surface plate-like body 5 constituting the upper surface wall of the heat insulating box 3 has a step shape in the front-rear direction, and is a flat front portion 5 a parallel to the bottom plate-like body 7 in the forward direction. And a rear portion 5c having a flat plate positioned below the front portion and parallel to the bottom plate-like body 7 and a side wall standing upright from the side edge of the flat plate, the front portion 5a and the rear portion 5c. Between the rear plate-like body 13 and the flat rear wall portion 5b. In this way, the machine room 25 is formed on the flat plate of the rear part 5c recessed below the upper plate member 5, and the refrigeration cycle of the refrigerator 1 is formed in the machine room 25 as shown in FIG. Machines, fans, pumps, pipes, etc. are arranged.

  As shown in FIG. 6, the upper plate member 5 is sandwiched between an outer plate 51 located on the outer side, an inner plate 52 located on the inner side (inside the refrigerator), and the outer plate 51 and the inner plate 52. The first vacuum heat insulating material 55a, the second vacuum heat insulating material 55b, and the third vacuum heat insulating material 55c, which are three vacuum heat insulating materials arranged in this manner, are provided. The 1st vacuum heat insulating material 55a is flat plate shape, and is arrange | positioned at the front part 5a. The second vacuum heat insulating material 55b is disposed on the rear wall portion 5b, and the third vacuum heat insulating material 55c is disposed on the rear portion 5c.

  As shown in detail in FIG. 6, the outer plate 51 is formed of a metal member, and the front portion 5a, the rear wall portion 5b, and the rear portion 5c are integrally formed. As for the outer plate 51 in the front part 5a, the front end part is formed in the substantially U shape (U shape), and the edge part of the inner plate 52 is inserted in this U-shaped part. As shown in detail in FIG. 5, the outer plate 51 in the front portion 5 a is folded at the side end portion to form a contact portion 51 f, and the end portion of the inner plate 52 is inserted into the folded portion.

  As shown in detail in FIG. 4, the outer plate 51 in the rear portion 5 c includes a flat plate portion 51 a parallel to the bottom plate member 7, and a side wall portion 51 b that rises vertically from a side end of the flat plate portion 51 a, and the side wall portion 51 b. The upper end of each is bent outwardly perpendicularly to form a contact portion 51c. The contact portion 51c is continuous with the contact portion 51f of the front portion 5a. Further, the rear end of the side wall 51b is also bent vertically outward to form an edge 51d.

  The inner plate 52 is also formed of a metal member, and the edge portion is overlapped with the outer plate 51 and caulked. The first vacuum heat insulating material 55 a, the second vacuum heat insulating material 55 b, and the third vacuum heat insulating material 55 c are disposed between the outer plate 51 and the inner plate 52.

  Next, a connection portion between the upper plate member 5 and the right plate member 9 will be described. As shown in FIG. 7, the upper surface plate-like body 5 is in a state where the contact portions 51 c and 51 f of the outer plate 51 are placed on the upper end surfaces of the right-side plate-like body 9 and the left-side plate-like body 11. The mounted portions are joined to each other by spot welding (70), so that the right plate 9 and the left plate 11 are firmly connected.

  The right plate 9 is also composed of an outer plate 61, an inner plate 62, and a vacuum heat insulating material 65 arranged so as to be sandwiched between the outer plate 61 and the inner plate 62.

  The method of connecting the bottom plate 7 to the lower ends of the right plate 9, left plate 11, and back plate 13 is the same as the method of connecting the top plate 5 to them, and spot welding. by. The bottom plate 7 is common to the top plate 5 in that the vacuum heat insulating material is disposed in substantially the entire facing space between the outer plate and the inner plate. However, the bottom plate-like body 7 is different in shape from the top plate-like body 5 and has a flat plate shape.

  Thus, in the refrigerator 1 in this embodiment, the connection part of the upper surface plate-shaped body 5, the bottom surface plate-shaped body 7, and the right side plate-shaped body 9 (and the left side plate-shaped body 11) which forms the heat insulation box 3 is spot-welded. Therefore, it is not necessary to use a screw having a sharp tip such as a screw at the connecting portion. Therefore, since there is nothing which becomes the origin which the coating film of a vacuum heat insulating material damages, a vacuum heat insulating material can be arrange | positioned in the wide range between an outer plate and an inner plate. And by being able to use the vacuum heat insulating material with a high heat insulation effect in a wide range, the thickness of each plate-shaped body which comprises the heat insulation box 3 can be made thin, and it stores without changing the outer dimension of the heat insulation box 3 A wide space can be formed. In addition, if it is the structure couple | bonded by welding, it is not necessarily limited to spot welding, However, Spot welding is preferable.

  Moreover, since the rear part of the upper surface plate-like body 5 is L-shaped and the machine room 25 is formed there, the strength of the machine room 25 can be increased. Further, since the vacuum heat insulating materials 55 b and 55 c are arranged in front and below the machine room 25, it is possible to prevent heat from the machine room 25 from being transferred into the refrigerator 1. In addition, since the sound generated from the devices arranged in the machine room 25 is absorbed by the vacuum heat insulating materials 55b and 55c arranged in front and below the machine room 25, a silencing effect can be obtained.

  In addition, in order to explain the connection of each plate-like body, the joint portion of the upper plate-like body 5 and the right-side plate-like body 9 has been described as a representative, but welding is used when joining the plate-like bodies. Needless to say, the vacuum heat insulating material can be used in a wide range. In addition, the structure of the connecting portion of each plate-like body and the structure of each plate-like body are not limited to the above form, and any design change is possible as long as welding can be used as a connecting method of each plate-like body. is there.

(Second Embodiment)
Next, the refrigerator of 2nd Embodiment is demonstrated. In the first embodiment described above, spot welding can be performed by using a metal member for each plate-like body. However, in this embodiment, at least the left and right side plate-like bodies 9 and 11 are provided with the vacuum heat insulating material 103. Is disposed over almost the entire interior, covered with a resin outer plate 101 and an inner plate 102, and a metal reinforcing member 104 to 107 is attached to the periphery of the resin plate material. And Also in the present embodiment, the top plate 5, the bottom plate 7, and the back plate 13 can be connected to the left and right side plates 9 and 11 by spot welding.

  As shown in FIG. 8, the heat insulation box 3 of the present embodiment is composed of a top plate 5, a bottom plate (not shown), a right plate 9, a left plate 11, and a back plate 13. ing. The right-side plate-like body 9 and the left-side plate-like body 11 use resin members for the outer plates. As a description of the right side plate 9 and the left side plate 11 using the resin member, the right side plate 9 will be representatively described.

  As shown in FIG. 9, the right side plate-like body 9 has an outer plate 101 and an inner plate 102 that are resin flat plates, a flat vacuum heat insulating material 103, and a metal member that has an L-shaped cross section 4. It is comprised from the individual reinforcement members 104-107. The right plate-like body 9 is arranged such that the outer plate 101 and the inner plate 102 are arranged in parallel, and the vacuum heat insulating material 103 is sandwiched between the outer plate 101 and the inner plate 102. The vacuum heat insulating material 103 is bonded to the outer plate 101 and / or the inner plate 102.

  And the reinforcement members 104-107 are arrange | positioned so that the outer plate | board 101, the vacuum heat insulating material 103, and the outer peripheral part of the inner plate 102 may be enclosed, and each reinforcement member 104-107 is adjacent to the reinforcement member 104-107, spot welding, etc. They are connected to each other by a method to form a frame. That is, the reinforcing members 104 to 107 constitute a metal frame by joining the end portions in the longitudinal direction, and the outer plate 101, the inner plate 102, and the vacuum heat insulating material 103 are arranged in the frame. It is what. The reinforcing members 104 to 107 constitute the plate-like bodies 9 and 11 by, for example, bonding and fixing around the outer plate 101.

  Next, the upper surface plate-like body 5 in this embodiment will be described. As shown in FIGS. 8 and 10, the upper plate member 5 is composed of two members, a first upper plate member 111 disposed at the front and a second upper plate member 112 disposed at the rear. Has been. The upper surface plate-like body 5 is stepped in the front-rear direction by the first upper surface plate-like body 111 and the second upper surface plate-like body 112, and a machine room 25 is formed in the rear.

  The first upper surface plate-like body 111 includes a flat plate portion 111a parallel to the bottom surface plate-like body, and a flat plate-like rear wall portion 111b depending from the rear end of the flat plate portion 111a. The first front plate-like body 111 includes a metal outer plate 121 and an inner plate 122, and vacuum heat insulating materials 125 and 126 arranged so as to be sandwiched between the outer plate 121 and the inner plate 122.

  The outer plate 121 has an L-shape in which a flat plate portion 111a and a rear wall portion 111b are integrally molded, and front and rear end portions are formed in a U-shaped cross section (a U-shape). And the edge part of the inner board 122 is arrange | positioned inside the part formed in this U shape. The vicinity of the side edge of the flat plate portion 111a of the first front plate-like body 111 is a folded shape as shown in FIG. 4 in the first embodiment, and the end portion of the inner plate 122 is formed in the folded portion. Has been inserted. As in the first embodiment, the folded portion is a contact portion 121a (see FIG. 11) that is placed on the upper end surfaces of the right and left plate-like bodies 9 and 11 and spot-welded. Since the inner plate 122 has the same shape as the front portion 5a of the upper plate member 5 in the first embodiment, detailed description thereof is omitted.

  The second upper surface plate-like body 112 includes a flat plate portion 112a that is parallel to the bottom plate-like body, and a side wall portion 112b that rises perpendicularly from an end on the amount side of the flat plate portion 112a. The second upper plate member 112 includes a metal outer plate 131 and an inner plate 132, and a vacuum heat insulating material 135 disposed so as to be sandwiched between the outer plate 131 and the inner plate 132.

  The flat plate portion 112 a of the outer plate 131 is folded at the front end portion and engaged with the front end portion of the inner plate 132. The upper end of the side wall portion 112b of the outer plate 131 is bent outward to form an edge portion 131b, and the front end of the side wall portion 112b of the outer plate 131 is bent inward to form a contact wall 131c. A contact wall 131d is formed by bending the rear end of the side wall portion 112b outward.

  The second upper surface plate 112 is fixed to the first upper surface plate 111 by spot welding. That is, the second upper surface plate 112 has the contact wall 131c in contact with the rear wall 111b of the first front plate 111, and the contact portion is fixed by spot welding. By connecting the first upper surface plate-like body 111 and the second upper surface plate-like body 112 in this way, the upper surface plate-like body 5 has a stepped shape in the front-rear direction. In a state where the first upper surface plate body 111 and the second upper surface plate body 112 are connected, the contact portion 121a of the first upper surface plate body 111 and the edge 131b of the second upper surface plate body 112 are continuous. It has become.

  The upper plate 5 has the contact portion 121a and the edge 131b placed on the upper end surfaces of the right plate 9 and the left plate 11, and the contact wall 131d has the right plate 9 and the left plate. The plate-like body 11 is brought into contact with the vicinity of the upper end of the rear end face, and is fixed by spot welding (70). The bottom plate-like body 7 and the back plate-like body 13 are similarly connected to the left and right side plate-like bodies 9 and 11 by spot welding.

  According to this embodiment, since the connection part of each plate-like body is fixed by spot welding as in the first embodiment, a sharp tip such as a screw may protrude into the plate-like body. The vacuum heat insulating material can be arranged in a wide range inside the plate-like body. Therefore, since each plate-like body can be made thin, the internal storage space can be widened without changing the outer dimensions, and the volumetric efficiency can be increased. Moreover, since most of the right side plate-like body 9 and the left side plate-like body 11 are made of resin members, the weight of the refrigerator 1 can be reduced.

  Furthermore, since the upper surface plate-like body 5 is composed of two members, it is easy to change the design between the case where the machine room 25 is not located above and the case where it is located.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Refrigerator 3 Heat insulation box 4 Upper surface cover 5 Upper surface plate-like body 5a Front part 5b Rear wall part 5c Rear part 7 Bottom plate-like body 9 Right side plate-like body 11 Left side plate-like body 13 Back surface plate-like body 25 Machine room 51 Outer plate 51a Flat plate portion 51b Side wall portion 51c Contact portion 51d Edge portion 51f Contact portion 52 Inner plate 55a First vacuum heat insulating material 55b Second vacuum heat insulating material 55c Third vacuum heat insulating material 61 Outer plate 62 Inner plate 65 Vacuum heat insulating material 70 Spot welding DESCRIPTION OF SYMBOLS 101 Outer plate 102 Inner plate 103 Vacuum heat insulating material 104-107 Reinforcement member 111 First upper surface plate-like body 111a Flat plate portion 111b Rear wall portion 112 Second upper surface plate-like body 112a Flat plate portion 112b Side wall portion 121 Outer plate 121a Contact portion 122 Inner plate 125 Vacuum heat insulating material 126 Vacuum heat insulating material 131 Outer plate 131a Abutting wall 131b Edge 131c Abutting wall 131d Abutting wall 132 Inner plate 135 Vacuum insulation

Claims (6)

A refrigerator having a heat insulation box configured by connecting a plurality of plate-like bodies around an outer plate, an inner plate, and a vacuum heat insulating material disposed between the outer plate and the inner plate. And
The said heat insulation box connected the connection part with an adjacent plate-shaped object by welding, The refrigerator characterized by the above-mentioned.   2. The refrigerator according to claim 1, wherein the heat insulating box is formed by joining the connecting portions with adjacent plate-like bodies by spot welding.   The refrigerator according to claim 1 or 2, wherein the outer plates are all made of a metal member.   Among the plurality of plate-like bodies, the right-side plate-like body and the left-side plate-like body sandwich a vacuum heat insulating material between an outer plate and an inner plate made of a resin member, and a metal is formed around the outer plate and the inner plate. The refrigerator according to claim 1, wherein the reinforcing frame member is attached and configured, and the reinforcing frame member is joined to the adjacent plate-like body by welding.   The reinforcing frame member is formed into a frame by combining a plurality of metal reinforcing members having an L-shaped cross section, and the outer plate, the inner plate, and the vacuum heat insulating material are arranged inside the frame by the L-shaped reinforcing member. The refrigerator according to claim 4, wherein a material is arranged. The upper surface plate-like body of the plurality of plate-like bodies constituting the heat insulating box body includes a recess constituting a machine room at the rear,
The upper surface plate-like body is composed of a first upper surface plate-like body located at the front and a second upper face plate-like body located below the machine room, and the first upper surface plate-like body and the second plate-like body. The refrigerators according to claim 1, wherein the refrigerators are connected by welding.

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