JP2017172967A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that can improve rigidity of a refrigerator while securing thermal insulation performance by using a vacuum heat insulation material, and can improve assembling workability.SOLUTION: The refrigerator 1 includes: an outer box 11; an inner box 12 disposed inside the outer box 11; and the vacuum heat insulation materials 30, 31, 32, 33 provided between the outer box 11 and the inner box 12. A reinforcement member 40 is disposed in a corner part C of the outer box 11 and the inner box 12. The reinforcement member 40 has an inner face 12A on a side of the inner box 12 that is positioned on a side of the outer box 11 relative to inner faces on the side of the inner box 12 of the vacuum heat insulation materials 30, 31, 32, 33.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to a refrigerator.

  The refrigerator has an outer box made of steel plate and an inner box made of plastic, and a heat insulating member is arranged between the outer box and the inner box in order to ensure heat insulating performance. For example, Patent Document 1 discloses a heat insulating structure for a refrigerator door device. Inside the door device, a heat insulating performance of the door device is obtained by disposing a vacuum heat insulating material and filling a polyurethane foam material by an in-situ foaming method (see Patent Document 1).

JP 2006-90649 A

  By the way, the heat insulation performance of the vacuum heat insulating material is higher than the heat insulation performance of the polyurethane foam material, so by using the vacuum heat insulating material, the thickness formed by the outer box and the inner box of the refrigerator can be reduced, and the assembly property of the refrigerator can be reduced. improves. By reducing the thickness of the refrigerator, the capacity of the inner box of the refrigerator can be increased while maintaining the size of the outer box of the refrigerator, so that the capacity of the refrigerator can be increased. However, it is difficult to ensure the rigidity of the entire refrigerator using the vacuum heat insulating material.

  Therefore, if you try to increase the rigidity of the refrigerator by injecting polyurethane foam into the gap while using vacuum insulation, the polyurethane foam will adhere to the vacuum insulation, so it is necessary to replace the vacuum insulation If there is, the vacuum insulation cannot be replaced. Moreover, since the foamed polyurethane material is injected into the gap while using the vacuum heat insulating material, workability at the time of assembling the refrigerator is poor.

  The present invention has been made in view of the above, and the object of the present invention is to increase the rigidity of the refrigerator while ensuring the heat insulation performance using the vacuum heat insulating material, and to improve the assembly workability. It is to provide a refrigerator that can.

  The refrigerator of the embodiment of the present invention is a refrigerator having an outer box, an inner box disposed in the outer box, and a vacuum heat insulating material provided between the outer box and the inner box, A part of the corner of the outer box is formed by bending a belt-shaped steel plate, and a reinforcing member for increasing the rigidity of the corner is disposed at the corner.

It is a perspective view showing the whole refrigerator concerning a 1st embodiment of the present invention. It is sectional drawing of the vertical direction in the AA of the main body of the refrigerator shown in FIG. 3A is a development view of a metal plate constituting the outer box, and FIG. 3B is a perspective view showing the outer box formed by bending the metal plate shown in FIG. 3A. It is a figure which shows the cross-sectional shape example of the reinforcement member shown in FIG. It is a figure which shows 2nd Embodiment and 3rd Embodiment of this invention. It is a figure which shows 4th Embodiment and 5th Embodiment of this invention. It is a figure which shows 6th Embodiment of this invention. It is a figure which shows 7th Embodiment and 8th Embodiment of this invention. It is a figure which shows 9th Embodiment and 10th Embodiment of this invention. It is a figure which shows other embodiment of this invention. It is a figure which shows the example of the manufacturing method of other embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing the entire refrigerator 1 according to the first embodiment of the present invention.

  A refrigerator 1 shown in FIG. 1 has a main body 2. At the uppermost position of the main body 2, there is provided a refrigerator compartment 5 that is opened and closed by double-opening left and right doors (revolving doors) 3 and 4. These doors 3 and 4 are attached so as to be openable and closable around the rotation shafts 3A and 4A of the main body 2, respectively.

  Below the refrigerator compartment 5 is provided a vegetable compartment 7 that is opened and closed by a drawer-type door 7a. An ice making room 8 and an upper freezing room 9 are provided side by side in the lower side of the vegetable room 7. The ice making chamber 8 is opened and closed by a drawer type door 8a, and the upper freezing chamber 9 is opened and closed by a drawer type door 9a.

  A main freezer compartment 10 is provided at the lowermost part of the main body 2 and below the ice making compartment 8 and the upper freezer compartment 9. The main freezer compartment 10 is opened and closed by a drawer type door 10a. Recessed handles 3b and 4b for hooking fingers are respectively provided in the lower portions of the doors 3 and 4. Recessed handles 7b, 8b, 9b, and 10b for hooking fingers are respectively provided on the upper portions of the drawer type doors 7a, 8a, 9a, and 10a.

  FIG. 2 is a longitudinal sectional view taken along line AA of the main body 2 of the refrigerator 1 shown in FIG.

  The main body 2 of the refrigerator 1 shown in FIG. 2 includes an outer box 11, an inner box 12, a plurality of vacuum heat insulating materials 30, 31, 32, 33 provided between the outer box 11 and the inner box 12, The reinforcing member 40 is provided at each of the four corners C between the box 11 and the inner box 12. In FIG. 2, the middle part of the main body 2 is omitted. This corner C can also be called a corner or a corner. In FIG. 2, the upper right corner C is enlarged as an example, but the structures of the four corners C are substantially the same.

  First, an example of the shape of the outer box 11 shown in FIG. 2 will be described with reference to FIG.

  3 shows an example of the shape of the outer box 11, FIG. 3 (A) is a development view of the metal plate 13 constituting the outer box 11, and FIG. 3 (B) shows the metal shown in FIG. 3 (A). It is a perspective view which shows the outer box 11 comprised by bending the board 13. FIG.

  The metal plate 13 shown in FIG. 3A is formed by, for example, bending a belt-shaped steel plate, and has a ceiling surface portion 14, left and right side surface portions 15 and 16, and a bottom surface portion 17. A mountain fold portion 18 between the ceiling surface portion 14 and the left side surface portion 15, a mountain fold portion 19 between the ceiling surface portion 14 and the right side surface portion 16, and a right side surface portion 16 and a bottom surface portion 17. The mountain fold portions 20 between them are each bent at 90 degrees. In addition, by welding the end portion 21 of the left side surface portion 15 and the end portion 22 of the bottom surface portion 17, the vertically long outer box 11 shown in FIG. 3B can be configured. The outer box 11 is a rectangular parallelepiped box with the front and back openings 55 and 56 being vertically long.

  Returning to FIG. 2, the inner box 12 is a vertically long box like the outer box 11, and is a rectangular parallelepiped box disposed in the outer box 11. The inner box 12 is made, for example, by molding plastic. The size of the inner box 12 is smaller than the size of the outer box 11 so as to enter the outer box 11. The inner box 12 has a ceiling surface portion 24, left and right side surface portions 25 and 26, and a bottom surface portion 27. The ceiling surface portion 24 of the inner box 12 is parallel to the ceiling surface portion 14 of the outer box 11 and faces away by a dimension T.

  The left side surface portion 25 of the inner box 12 is parallel to the left side surface portion 15 of the outer box 11 and faces away by a dimension T. The right side surface portion 26 of the inner box 12 is parallel to the right side surface portion 16 of the outer box 11 and faces away by a dimension T. The bottom surface portion 27 of the inner box 12 is parallel to the bottom surface portion 17 of the outer box 11 and faces away by a dimension T. As described above, the inner box 12 is disposed in the outer box 11, and a gap S having a dimension T is provided between the outer box 11 and the inner box 12.

  As shown in FIG. 2, plate-like vacuum heat insulating materials 30, 31, 32, and 33 are disposed in the gaps S between the outer box 11 and the inner box 12 in order to ensure heat insulating performance. The vacuum heat insulating materials 30, 31, 32, and 33 are formed by, for example, wrapping a glass wool plate-shaped core material with a laminate film, and forming the inside into a vacuum porous structure, thereby achieving a high vacuum space ratio (for example, 90%). Is over). For this reason, this vacuum heat insulating material 30, 31, 32, 33 can exhibit high heat insulation performance by vacuum.

  Since the heat insulating performance of the vacuum heat insulating materials 30, 31, 32, 33 is considerably higher than that of the polyurethane foam material, the heat insulating performance of the main body 2 even when the vacuum heat insulating materials 30, 31, 32, 33 having a small thickness are used. Can be secured. For this reason, compared with the case where a polyurethane foam material is used, the clearance S between the outer box 11 and the inner box 12 can be reduced by using the vacuum heat insulating materials 30, 31, 32, and 33. Since the inner dimension of the inner box 12 can be enlarged when the outer dimensions of the refrigerator 1 are the same, the accommodation volume of the main body 2 of the refrigerator 1 can be increased.

  As shown in FIG. 2, the vacuum heat insulating material 30 is disposed in the gap S between the ceiling surface portion 24 of the inner box 12 and the ceiling surface portion 14 of the outer box 11, and the other vacuum heat insulating material 31 is the left side surface of the inner box 12. It is arranged in the gap S between the portion 25 and the left side surface portion 15 of the outer box 11. Further, another vacuum heat insulating material 32 is disposed in the gap S between the right side surface portion 26 of the inner box 12 and the right side surface portion 16 of the outer box 11. Another vacuum heat insulating material 33 is disposed in the gap S between the bottom surface portion 27 of the inner box 12 and the bottom surface portion 17 of the outer box 11. For example, the outer surfaces of the vacuum heat insulating materials 30 to 33 can be attached to the inner surface 11A of the outer box 11 using an adhesive, but are arranged between the outer box 11 and the inner box 12 without using an adhesive. You can also.

  As shown in FIG. 2, the outer box 11 and the inner box 12 of the main body 2 have four corners C, and each corner C has the same structure. The four corners C are not provided with the vacuum heat insulating materials 30 to 33, and the four corners C include the inner surface 11 </ b> A of the outer box 11, the inner surface 12 </ b> A of the inner box 12, and the vacuum heat insulating materials 30 to 33. Spaces 35 are respectively formed by the end surfaces 34. In the space 35 of each corner C, the reinforcing member 40 is provided in the vertical direction of FIG. 2 in order to reinforce and hold the structure composed of the outer box 11, the inner box 12, and the vacuum heat insulating materials 30 to 33. It is arranged along the direction. Since the reinforcing members 40 are arranged at the four corners C, the rigidity of the main body 2 can be increased when the vacuum heat insulating materials 30 to 33 are used.

  As shown in FIG. 2, the reinforcing member 40 is, for example, an L-shaped metal or plastic member, and the reinforcing member 40 is bonded to the inner surface 11 </ b> A of the outer box 11 at the corner C, for example. It can be fixed with an agent. The thickness of the reinforcing member 40 is considerably smaller than the thickness of the vacuum heat insulating material 30, and the inner surface 40A of the reinforcing member 40 is disposed at a position retracted along the direction DR toward the inner surface 11A side of the outer box 11. Has been. Similarly, the inner surface 40A of another reinforcing member 40 is disposed at a position retracted along the direction DR toward the inner surface 11A side of the outer box 11. Furthermore, the inner surface 40A of another reinforcing member 40 is disposed at a position retracted along the direction DR toward the inner surface 11A side of the outer box 11. Further, the inner surface 40A of another reinforcing member 40 is disposed at a position retracted along the direction DR toward the inner surface 11A side of the outer box 11.

  Thus, the inner surface 40A on the inner box 12 side of the reinforcing member 40 is positioned closer to the outer box 11 side than the inner surfaces 30A to 33A on the inner box 12 side of the vacuum heat insulating materials 30 to 33. Thereby, when ensuring the heat insulation performance of the main body 2 using the vacuum heat insulating materials 30 to 33, the reinforcing member 40 can increase the rigidity of the refrigerator 1 having the vacuum heat insulating material at each corner C. And the weight reduction of the main body 2 can be achieved by using the reinforcement member 40 with small thickness.

  As shown in FIG. 2, the reinforcing member 40 is disposed at a position retracted along the direction DR from the inner surfaces 30A to 33A of the vacuum heat insulating materials 30 to 33 toward the outer box 11 side. 40 does not protrude from the inner surfaces 30A to 33A of the vacuum heat insulating materials 30 to 33 to the inner box 12 side. Accordingly, each reinforcing member 40 does not protrude toward the inner surface 12A side of the inner box 12 and is arranged close to the outer box 11 side. Therefore, even if the reinforcing member 12 is disposed at the corner C, the reinforcing member 40 is disposed. The device itself does not get in the way when the outer box 11 and the inner box 12 are assembled. Therefore, the main body 2 composed of the outer box 11, the inner box 12, the vacuum heat insulating materials 30 to 33, and the plurality of reinforcing members 40 is an assembly site even though the reinforcing members 40 are additionally used. Can be assembled easily.

  The main body 2 of the refrigerator 1 according to the first embodiment of the present invention can increase the rigidity of the main body 2 of the refrigerator 1 while ensuring the heat insulating performance using the vacuum heat insulating materials 30 to 33, and further improves the assembly workability. be able to. After the vacuum heat insulating materials 30 to 33 are disposed between the outer box 11 and the inner box 12, the reinforcing member 40 can be easily formed in the longitudinal direction along the vertical direction of the paper without damaging the vacuum heat insulating materials 30 to 33. Can be inserted and placed. For this reason, when the replacement | exchange operation | work of the reinforcement member 40 is required, it can carry out easily.

  By the way, as the order of attachment of the reinforcing member 40, when assembling the outer box 11, the inner box 12, the vacuum heat insulating materials 30 to 33 and the reinforcing member 40 shown in FIG. After affixing the inner surface 11 </ b> A to the inner surface 11 </ b> A using an adhesive, for example, the reinforcing member 40 is installed on the inner surface 11 </ b> A of each corner C of the outer box 11. Alternatively, after the reinforcing member 40 is first disposed on the inner surface 11A of the outer box 11 at each corner C, the vacuum heat insulating materials 30 to 33 are attached to the inner surface 11A of the outer box 11 using an adhesive. Also good.

  FIG. 4 shows an example of a cross-sectional shape of the reinforcing member 40 shown in FIG. In the reinforcing member 40 shown in FIGS. 2 and 4A, the lateral length L1 and the longitudinal length L1 are the same, and are constituted by one member. In contrast, another reinforcing member 40 shown in FIG. 4B is configured by joining two members 40F and a member 40G. In another reinforcing member 40 shown in FIG. 4C, the length L1 in the horizontal direction is longer than the length L2 in the vertical direction. In another reinforcing member 40 shown in FIG. 4D, the length L1 in the vertical direction is longer than the length L2 in the horizontal direction.

(Second embodiment and third embodiment)
Next, a second embodiment and a third embodiment of the present invention will be described with reference to FIG.

  5 (A) and 5 (B) show a second embodiment and a third embodiment of the present invention, respectively. In FIGS. 5 (A) and 5 (B), the main body 2 shown in FIG. 2 is shown. Although one corner C of the outer box 11 and the inner box 12 is shown as a representative, the four corners C have the same structure. 2nd Embodiment and 3rd Embodiment of this invention have the effect of 1st Embodiment of this invention, and also have the following effect.

  The structure of the corner C shown in FIGS. 5A and 5B is different from the structure of the corner C shown in FIG. 2 in that the heat insulating members 60 and 61 correspond to the reinforcing member 40 having an L-shaped cross section. Are additionally provided. As the heat insulating members 60 and 61, a heat insulating material, for example, a pre-molded polystyrene foam (EPS) can be used. In addition, as the heat insulating members 60 and 61, a silicon material, a soft tape, or the like can be employed. The heat insulating members 60 and 61 are respectively disposed in the space 35 of the corner portion C, and are fixed to the inner surface 40A side of the reinforcing member 40 using, for example, an adhesive, thereby filling the space 35 and improving the heat insulating properties. can do.

  In the example shown in FIG. 5A, the heat insulating member 60 has a square cross section. Thereby, the heat insulating member 60 can substantially fill the space 35 and maintain the heat insulating property at the corner C. The connection end 24T of the ceiling surface portion 24 of the inner box 12 and the connection end 26T of the right side surface portion 26 are connected so as to overlap each other. The structure of the connection end portions 24T and 26T in the corner portion C is the same in each corner portion C.

  In the example shown in FIG. 5B, the heat insulating member 61 has an L-shaped cross section. Thereby, the heat insulation member 61 can fill a part of the space 35 and improve the heat insulation in the corner portion C. The connection end 24T of the ceiling surface portion 24 of the inner box 12 and the connection end 26T of the right side surface portion 26 are overlapped and joined to each other. The structure of the connection end portions 24T and 26T in the corner portion C is the same in each corner portion C. As a result, the ceiling surface portion 24, the left and right side surface portions 25 and 26, and the bottom surface portion 27 of the inner box 12 can be divided into four parts and joined together by plastic molding. Compared to the case of molding, it can be made easily.

(Fourth and fifth embodiments)
Next, with reference to FIG. 6, 4th Embodiment and 5th Embodiment of this invention are described.

  6 (A) and 6 (B) show a fourth embodiment and a fifth embodiment of the present invention, respectively. In FIGS. 6 (A) and 6 (B), the main body 2 shown in FIG. 2 is shown. Although one corner C of the outer box 11 and the inner box 12 is shown as a representative, the four corners C have the same structure.

  6A and 6B is different from the structure of the corner C shown in FIGS. 5A and 5B in that the ceiling surface portion 24 of the inner box 12 is That is, the right side surface portion 26 is continuous. Such a structure in the corner C is the same in each corner C. Accordingly, the structure of the corner portion C shown in FIGS. 6A and 6B is a component of the inner box 12 as compared with the structure of the corner portion C shown in FIGS. 5A and 5B. The score can be reduced.

(Sixth embodiment)
FIG. 7 shows a sixth embodiment of the present invention.

  FIG. 7 shows an example of the structure of the vacuum heat insulating materials 30, 31, 32, 33 already described. 7A is a perspective view showing the vacuum heat insulating materials 30, 31, 32, and 33, and FIG. 7B shows a cross-sectional structure of the vacuum heat insulating materials 30, 31, 32, and 33, and FIG. C) is an example in which the vacuum heat insulating material 32 among the vacuum heat insulating materials 30, 31, 32, 33 is disposed between the right side surface portion 16 of the outer box 11 and the right side surface portion 26 of the inner box 12. Is shown as a representative.

  As shown in FIGS. 7 (A) and 7 (B), the vacuum heat insulating materials 30, 31, 32, 33 are formed by wrapping a glass wool core material 70 with a laminate film 71, and the inside thereof is a vacuum porous structure. As a result, a high vacuum space ratio (for example, exceeding 90%) is maintained. The laminate film 71 has one sealing portion 72 that seals the core material 70 and the other sealing portion 73. One sealing portion 72 and the other sealing portion 73 can be formed by applying heat, for example.

  FIG. 7C illustrates a method of storing the sealing portions 72 and 73 when assembling the outer box 11 and the vacuum heat insulating materials 30, 31, 32, and 33. As shown in FIG. 7C, for example, the sealing portion 72 of the laminate film 71 is bent to the inner surface 16A side of the right side surface portion 16 of the outer box 11, and the inner surface 16A. And put between the laminated film 71. That is, the sealing portion 72 is not bent toward the inner surface 26 </ b> A side of the side surface portion 26 of the inner box 12. The same applies to the sealing portion 73.

  In this way, the sealing portion 72 is folded and accommodated while the outer box 11 is a metal plate having a high rigidity, whereas the inner box 12 is a plastic plate having a lower rigidity than a metal. . If the sealing portions 72 and 73 are bent toward the inner box 12, the inner box 12 bulges inward due to the influence of the thickness of the sealing portions 72 and 73 that the inner box 12 is bent. The flatness may be lost, and the appearance may deteriorate.

  Therefore, in order to prevent the inner box 12 from being affected by the thickness of the bent sealing parts 72 and 73, the sealing parts 72 and 73 are bent toward the outer box 11, thereby the outer box 11 and the inner box. 12 can be ensured, and the inner box 12 can be neatly adhered to the vacuum heat insulating materials 30, 31, 32 and 33. The structure in which the sealing portions 72 and 73 are folded and housed in the outer box 11 in this manner is the same in any of the vacuum heat insulating materials 30, 31, 32, and 33.

(Seventh and eighth embodiments)
Next, with reference to FIG. 8, 7th Embodiment and 8th Embodiment of this invention are described.

  FIGS. 8A and 8B show a seventh embodiment and an eighth embodiment of the present invention, respectively. In FIGS. 8A and 8B, the main body 2 shown in FIG. Although one corner C of the outer box 11 and the inner box 12 is shown as a representative, the four corners C have the same structure. 7th Embodiment and 8th Embodiment of this invention have the effect of 1st Embodiment of this invention, and also have the following effect.

  8A is different from the structure of the corner C shown in FIG. 2 in that the end 32T of the vacuum heat insulating material 32 has advanced into the space 35 of the corner C. The end portion 32T has a step portion 32R. The step portion 32R is a stepped portion formed outside the end portion 32T. The end portion 32T faces the inner surface 40A of the reinforcing member 40 with a space therebetween, and the stepped portion 32R also faces the inner surface 40A of the reinforcing member 40 with a space therebetween.

  By adopting such a structure, the end portion 32T of the vacuum heat insulating material 32 can enter the space 35 of the corner portion C. In other words, the reinforcing member 40 can be positioned in the stepped portion 32 </ b> R of the vacuum heat insulating material 32. Thereby, the usable volume of the vacuum heat insulating material 32 can be expanded without reducing the size of the reinforcing member 40 or even increasing the size of the reinforcing member 40. Thereby, the reinforcement member 40 can raise the heat insulation effect by the vacuum heat insulating material 32 in the corner | angular part C, maintaining the intensity | strength in the corner | angular part C or raising intensity | strength. This structure is the same in each corner C.

  8B is different from the structure of the corner C shown in FIG. 2 in that the end portions 30T and 32T of the vacuum heat insulating materials 30 and 32 are both in the space 35 of the corner C. The end portions 30T and 32T have step portions 30R and 32R, respectively. The step portions 30R and 32R are stepped portions formed outside the end portions 30T and 32T, respectively. The end portions 30T and 32T face the inner surface 40A of the reinforcing member 40, and the step portions 30R and 32R also face the inner surface 40A of the reinforcing member 40.

  By adopting such a structure, the end portions 30T and 32T of the vacuum heat insulating materials 30 and 32 can enter the space 35 of the corner portion C. In other words, the reinforcing member 40 can be positioned both in the stepped portion 30R of the vacuum heat insulating material 30 and in the stepped portion 32R of the vacuum heat insulating material 32. Accordingly, the usable volume of the vacuum heat insulating materials 30 and 32 can be increased without reducing the size of the reinforcing member 40 or even increasing the size of the reinforcing member 40. Thereby, the reinforcement member 40 can raise the heat insulation effect by the vacuum heat insulating materials 30 and 32 in the corner C while maintaining the strength in the corner C or increasing the strength. This structure is the same in each corner C.

(Ninth and tenth embodiments)
Next, with reference to FIG. 9, 9th Embodiment and 10th Embodiment of this invention are described.

  9A and 9B show a ninth embodiment and a tenth embodiment of the present invention, respectively. In FIGS. 9A and 9B, the main body 2 shown in FIG. Although one corner C of the outer box 11 and the inner box 12 is shown as a representative, the four corners C have the same structure. The ninth and tenth embodiments of the present invention have the effects of the seventh embodiment of the present invention shown in FIG. 8A, and further have the following effects.

  The structure of the corner portion C of the ninth embodiment of the present invention shown in FIG. 9 (A) is different from the structure of the corner portion C shown in FIG. 8 (A) because the heat insulating member 80 is additionally arranged in the space 35. It has been done. The heat insulating member 80 is a member that is long in the direction perpendicular to the paper surface of FIG. 9A, and is made of a heat insulating material, for example, pre-molded molded polystyrene (EPS). The heat insulating member 80 has, for example, a rectangular cross section, and is disposed between the inner surface 40A of the reinforcing member 40 and the end portions 30T and 32T of the vacuum heat insulating materials 30 and 32. Thereby, the added heat insulation member 80 can raise the heat insulation effect in the corner | angular part C. FIG.

  In the tenth embodiment of the present invention shown in FIG. 9B, a heat insulating member 80 is additionally arranged in the space 35 of the corner C. The heat insulating member 80 is a member that is long in the direction perpendicular to the paper surface of FIG. 9B, and is made of a heat insulating material, for example, a pre-molded polystyrene foam (EPS). The heat insulating member 80 has, for example, a rectangular cross section, and is disposed between the inner surface 40A of the reinforcing member 40 and the end portions 30T and 32T of the vacuum heat insulating materials 30 and 32. Thereby, the added heat insulation member 80 can raise the heat insulation effect in the corner | angular part C. FIG.

  Moreover, the end portions 30T and 32T of the vacuum heat insulating materials 30 and 32 shown in FIG. 9B are provided with step portions 30R and 32R as shown in FIGS. 8A, 8B, and 9A. Is not formed. That is, the end portions 30T and 32T of the vacuum heat insulating materials 30 and 32 do not enter the space 35 of the corner portion C, and the end portions 30T and 32T of the vacuum heat insulating materials 30 and 32 are separated from the reinforcing member 40. .

  For this reason, at the time of assembly, after arranging the vacuum heat insulating materials 30 and 32 between the outer box 11 and the inner box 12, the reinforcing member 40 is inserted in the longitudinal direction along the direction perpendicular to the plane of FIG. 9B. At this time, the reinforcing member 40 does not damage the laminate film 71 that is the outer covering of the vacuum heat insulating materials 30 and 32.

  Thereby, even if it is after the vacuum insulating materials 30 and 32 are arrange | positioned between the outer box 11 and the inner box 12, the reinforcement member 40 is a corner | angular part, without damaging the laminate film 71 of the vacuum insulating materials 30 and 32. Can be easily inserted by inserting into C. That is, after arrange | positioning the vacuum heat insulating materials 30-33 between the outer box 11 and the inner box 12, the reinforcement member 40 does not damage the vacuum heat insulating materials 30-33 in a longitudinal direction along a paper surface perpendicular | vertical direction. Easy to insert and place. For this reason, the replacement | exchange operation | work of the reinforcement member 40 can also be performed easily. Step portions 30R and 32R as shown in FIGS. 8A, 8B, and 9A are formed at the end portions 30T and 32T of the vacuum heat insulating materials 30 and 32 shown in FIG. 9B. The same is true for the first embodiment of the present invention shown in FIG.

(Other embodiments)
10 (A) to 10 (C) each show still another embodiment of the present invention.

  In the embodiment of the present invention shown in FIG. 10 (A), the reinforcing member 120 has a rectangular cross section, the inner box 12 is composed of a plurality of inner plates, and the thickness G1 of the reinforcing member 120 is adjacent. Further, the thickness of the reinforcing member 120 is smaller than the thickness of the vacuum heat insulating materials 30 and 32 to be separated from the inner box 12.

  In the embodiment of the present invention shown in FIG. 10B, the reinforcing member 130 has a substantially rectangular cross section, but has an inclined surface 131 at a corner portion facing the inner box 12. By providing the inclined surface 131 on the reinforcing member 130, the width FH of the side surface portion 132 of the reinforcing member 130 facing the ends of the vacuum heat insulating materials 30 and 32 can be made larger than the thickness of the member of the inner box 12. The width FG of the reinforcing member 130 can be made larger than the width of the vacuum heat insulating materials 30 and 32. A heat insulating member 170 is disposed on the side of the corner of the ceiling surface portion 24 and the side surface portion 26 of the inner box 12.

  In the embodiment of the present invention shown in FIG. 10C, the reinforcing member 140 has an inclined surface 141 at the corner portion facing the inner box 12. In accordance with the inclined surface 141, an inclined portion 12V may be provided also on the inner box 12 side. Accordingly, the inclined portion 12V can escape in space according to the inclined surface 141, so that the reinforcing member 140 of FIG. 10C has a cross-sectional area further than that of the reinforcing member 130 shown in FIG. Can be bigger.

  Next, with reference to FIG. 11, the example of the manufacturing method of the outer box and inner box of the refrigerator of this invention is demonstrated.

  As shown in FIG. 11A, two reinforcing members 150 and two vacuum heat insulating materials 31 and 32 are attached to the metal plate 13. Left and right side portions 25 and 26 for constituting an inner box are attached to the vacuum heat insulating materials 31 and 32, respectively. By bending the metal plate 13 shown in FIG. 11A at the two reinforcing members 150, as shown in FIG. 11B, the ceiling surface part 14 and the left and right side parts 15, 16 of the outer box 11 are obtained. Can be formed. That is, the two reinforcing members 150 can be used as bending means for bending the metal plate 13. In this state, the left and right side portions 25 and 26 face each other. As shown in FIG. 11A, the reinforcing members 150 and 150 and the vacuum heat insulating materials 31 and 32 are attached to the metal plate 13 in advance because the reinforcing member and the vacuum heat insulating material are bent after the metal plate is bent. This is in order to avoid the attachment workability when the material is to be attached.

  Next, as shown in FIG. 11C, the ceiling surface portion 24 constituting the inner box is arranged with respect to the left and right side surface portions 25 and 26. Further, the bottom surface portion 27 is disposed on the left and right side surface portions 15 and 16. Accordingly, as shown in FIG. 11D, the vacuum heat insulating material 30 can be disposed between the ceiling surface portions 14 and 24, and the vacuum heat insulating material 33 can be disposed between the bottom surface portions 17 and 27. In addition, the ceiling surface portion 14, the left and right side surface portions 15, 16, and the bottom surface portion 17 of the outer box 11 can be configured by reinforcing members 150, 150 and other reinforcing members 151, 151. The inner box 12 can be constituted by a ceiling surface portion 24, left and right side surface portions 25 and 26, and a bottom surface portion 27.

  Note that the vacuum heat insulating material 30 of the ceiling surface portion 24 illustrated in FIG. 11C may be fixed in advance to the metal plate 13 illustrated in FIG.

  In addition, you may provide piping, an electric wire, a cold air path, etc. in the reinforcement member arrange | positioned at the corner | angular part of an outer box and an inner box.

  In the refrigerator 1 of the embodiment of the present invention, the outer box 11, the inner box 12 arranged in the outer box 11, and the vacuum heat insulating materials 30, 31, 32, 33 provided between the outer box 11 and the inner box 12. And a refrigerator. A reinforcing member 40 is disposed at a corner C of the outer box 11 and the inner box 12, and an inner surface 12 A of the reinforcing member 40 on the inner box 12 side is an inner box of the vacuum heat insulating materials 30, 31, 32, 33. It is located closer to the outer box 11 than the inner surface on the 12 side.

  Thereby, when ensuring the heat insulation performance using the vacuum heat insulating materials 30, 31, 32, 33, the reinforcing member 40 can increase the rigidity of the refrigerator 1 having the vacuum heat insulating material, and the reinforcing member 40 is vacuum heat insulating. Since each of the reinforcing members 40 is disposed at a position retracted along the direction DR from the inner surfaces 30A to 33A of the members 30 to 33 toward the outer box 11 side, each of the reinforcing members 40 is each of the inner surfaces 30A to 30V of the vacuum heat insulating materials 30 to 33. It does not protrude from 33A to the inner box 12 side. Therefore, the reinforcing member 40 does not protrude to the inner box 12 side, and even if the reinforcing member 12 is arranged at the corner C, the reinforcing member 40 does not get in the way, and the outer box 11, the inner box 12, and the vacuum insulation. The main body 2 including the materials 30 to 33 and the reinforcing member 40 can be easily assembled.

  Thus, in the refrigerator 1 of embodiment of this invention, the rigidity of a refrigerator can be improved using the reinforcement member arrange | positioned at a corner | angular part, ensuring heat insulation performance using a vacuum heat insulating material. And since the polyurethane foam material is not used, the assembly workability | operativity of the refrigerator 1 can be improved. Since the foamed polyurethane material does not adhere to the vacuum heat insulating material, the vacuum heat insulating material can be easily replaced when repairing the refrigerator.

  As shown in FIG. 5, in the corner portion C, heat insulating members 60 and 61 that maintain the heat insulating property in the corner portion C are arranged. Thereby, even if it arrange | positions the reinforcement member 40 in the corner | angular part C, the heat insulation members 60 and 61 can ensure the heat insulation performance in the corner | angular part C. FIG.

  The outer box 11 is made of metal, and the inner box 12 is made of plastic. As shown in FIG. 7, the vacuum heat insulating materials 30, 31, 32, and 33 have a vacuum heat insulating material 70 and a film 71 covering the vacuum heat insulating material 70, and a sealing portion 72 that is an end portion of the film 71. , 73 are bent and arranged on the inner surface 11A side of the outer box 11. Thereby, since the sealing parts 72 and 73 are not arrange | positioned at the plastic inner box 12, the inconvenience that the plastic inner box 12 swells inward can be prevented, and the flatness of the inner box 12 is ensured. it can.

  As shown in FIG. 8A, in each corner portion C, a step portion 32R for accommodating a part of the reinforcing member 40 is provided on the outer surface side of the vacuum heat insulating material 32, for example. Thereby, even if it does not make the dimension of the reinforcement member 40 small, the edge part 32T of the vacuum heat insulating material 32 can be extended and arrange | positioned in the space 35 of the corner | angular part C, and can be used for the size of each vacuum heat insulating material which can be used. The size can be increased, and the heat insulation performance can be further improved.

  As shown in FIGS. 2 and 9B, the reinforcing member 40 is disposed at a position away from the vacuum heat insulating materials 30 to 33. Thereby, after arrange | positioning the vacuum heat insulating materials 30-33 between the outer box 11 and the inner box 12, the reinforcement member 40 is a longitudinal direction along a paper surface perpendicular | vertical direction, without damaging the vacuum heat insulating materials 30-33. Can be easily inserted and arranged. For this reason, it is possible to replace the reinforcing member 40 without damaging the vacuum heat insulating materials 30 to 33.

  The inner surface on the inner box side of the reinforcing member is located closer to the outer box side than the inner surface on the inner box side of the vacuum heat insulating material. For this reason, the reinforcing member does not interfere with the inner box.

  Since the thickness of the reinforcing member is smaller than the thickness of the vacuum heat insulating material, the reinforcing member does not interfere with the inner box and the outer box.

  Since the reinforcing member has an inclined portion, a reinforcing member having a larger cross-sectional area can be disposed.

  As mentioned above, although embodiment of this invention was described, embodiment is shown as an example and is not intending limiting the range of invention. The novel embodiment can be implemented in various other modes, and various omissions, replacements, and changes can be made without departing from the spirit of the 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.

  Each embodiment of the present invention can be used in any combination. Moreover, the structure of the refrigerator 1 shown in FIG. 1 is an example, and can employ | adopt arbitrary structures.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Main body 3 Kannon door 4 Kannon door 5 Refrigerator room 7 Vegetable room 8 Ice making room 9 Upper freezer room 10 Main freezer room 30 Vacuum heat insulating material 30R Step part 30T of vacuum heat insulating material End part 31 of vacuum heat insulating material Vacuum heat insulating material 32 Vacuum heat insulating material 32R Step portion 32T of vacuum heat insulating material End 33 of vacuum heat insulating material Vacuum heat insulating material 35 Corner space 40 Reinforcing member 70 Core material 71 Laminating film 72 Sealing portion 73 of laminating film Sealing portion C of laminating film Corner

Claims (8)

A refrigerator having an outer box, an inner box disposed in the outer box, and a vacuum heat insulating material provided between the outer box and the inner box,
A part of corners of the outer box is formed by bending a strip-shaped steel plate, and a reinforcing member for increasing the rigidity of the corners is arranged at the corners.   The refrigerator according to claim 1, wherein a heat insulating member that retains heat insulation at the corner is disposed at the corner.   The outer box is made of metal, the inner box is made of plastic, and the vacuum heat insulating material has a vacuum heat insulating material and a film covering the vacuum heat insulating material, and an end of the film is The refrigerator according to claim 1, wherein the refrigerator is arranged by being bent on the inner surface side of the outer box.   The refrigerator according to any one of claims 1 to 3, wherein a step portion for accommodating a part of the reinforcing member is provided on an outer surface side of the vacuum heat insulating material.   The refrigerator according to any one of claims 1 to 3, wherein the reinforcing member is disposed at a position separated from the vacuum heat insulating material.   The inner surface on the inner box side of the reinforcing member is located closer to the outer box side than the inner surface on the inner box side of the vacuum heat insulating material. Refrigerator.   The refrigerator according to any one of claims 1 to 3, wherein a thickness of the reinforcing member is smaller than a thickness of the vacuum heat insulating material.   The refrigerator according to any one of claims 1 to 3, wherein the reinforcing member has an inclined portion.