JP2014126223A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator in which thermal insulation performance of corner portions of a main body can be secured.SOLUTION: A refrigerator 1 comprises: an outer box 11; an inner box 12 arranged in the outer box 11; and vacuum insulation materials 30-33 provided between the outer box 11 and the inner box 12. The adjacent vacuum insulation materials 30-33 are arranged so as to contact each other at corner portions C of the outer box 11 and the inner box 12. For example, end portions of the laterally arranged vacuum insulation material 30 out of the adjacent vacuum insulation materials 30-33 are in contact with side surfaces of the longitudinally arranged vacuum insulation materials 31 and 32 at the corner portions C.

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, in the refrigerator using the vacuum heat insulating material, the end portions of the vacuum heat insulating materials arranged adjacent to each other are separated from each other at the corners of the main body, so that there is a gap between the end portions of the vacuum heat insulating material. . For this reason, the heat insulation performance in the corner | angular part of a main body cannot be ensured.

  This invention is made | formed in view of the above, The place made into the objective is to provide the refrigerator which can ensure the heat insulation performance of the corner | angular part of a main body.

  A refrigerator according to an 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. Adjacent vacuum heat insulating materials are arranged at the corners of the box so as to contact each other.

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. FIG. 3A is a development view showing an outer surface and a side surface of a metal plate constituting the outer box, and FIG. 3B shows an outer box configured by bending the metal plate shown in FIG. It is a perspective view. It is a figure which shows the structural example of a vacuum heat insulating material. It is a figure which shows 2nd Embodiment of this invention. It is a figure which shows 3rd Embodiment of the refrigerator of this invention. It is a figure which shows 4th Embodiment of the refrigerator of this invention. It is a figure which shows 5th Embodiment of the refrigerator of this invention. It is a figure which shows 6th Embodiment of the refrigerator of this invention. Furthermore, it is a figure which shows another embodiment of this invention. Furthermore, it is a figure which shows another embodiment of this invention. Furthermore, it is a figure which shows another 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 has an outer box 11, an inner box 12, and a plurality of vacuum heat insulating materials 30, 31, 32, 33 provided between the outer box 11 and the inner box 12. ing. In this embodiment, these vacuum heat insulating materials 30, 31, 32, and 33 are separate members. The main body 2 has four corners C, which can also be called corners or corners.

  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. 3A is a developed view showing the outer surface and side surfaces of the metal plate 13 constituting the outer box 11, and FIG. It is a perspective view which shows the outer case 11 comprised by bending the metal plate 13 shown to A).

  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. However, the bottom surface portion 17 can be assembled separately from the ceiling surface portion 14 and the left and right side surface portions 15 and 16.

  As shown in FIG. 3A, on the inner surface 14A of the ceiling surface portion 14, the inner surfaces 15A and 16A of the left and right side surface portions 15 and 16, and the inner surface 17A of the bottom surface portion 17, a plate-like vacuum heat insulating material 30 is provided. , 31, 32, 33 are fixed using, for example, an adhesive.

  On the other hand, returning to FIG. 2, the inner box 12 is vertically long 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, the left and right side surface portions 25 and 26, and the bottom surface portion 27 of the inner box 12 may be separate members, and may be separate members when the reinforcing member 40 is attached. 24, the left and right side surface portions 25 and 26, and the bottom surface portion 27 may be fixed to each other.

  The ceiling surface portion 24 of the inner box 12 in FIG. 2 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 there is a gap of the dimension T between the outer box 11 and the inner box 12.

  As shown in FIG. 2, in the gap between the outer box 11 and the inner box 12, the plate-like vacuum heat insulating materials 30, 31, 32, and 33 are respectively arranged to ensure the heat insulating performance as described above. Yes. The vacuum heat insulating materials 30 and 33 are vacuum heat insulating materials along the horizontal direction (X direction), and the remaining vacuum heat insulating materials 31 and 32 are vacuum heat insulating materials along the vertical direction (Z direction).

  These 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 thereof into a vacuum porous structure, thereby achieving a high vacuum space ratio (for example, 90 %)). 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 gap between the outer box 11 and the inner box 12 can be reduced by using the vacuum heat insulating materials 30, 31, 32, 33. When the outer dimensions are the same, the inner dimension of the inner box 12 can be increased, so that the accommodation volume of the main body 2 of the refrigerator 1 can be increased and the capacity of the refrigerator 1 can be increased. The thickness of the vacuum heat insulating material is, for example, 10 to 30 mm.

  As shown in FIG. 2, the vacuum heat insulating material 30 is arranged in the gap between the ceiling surface portion 24 of the inner box 12 and the ceiling surface portion 14 of the outer box 11, and another vacuum heat insulating material 31 is a left side surface portion of the inner box 12. 25 and the left side surface portion 15 of the outer box 11. Further, another vacuum heat insulating material 32 is disposed in a gap 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 between the bottom surface portion 27 of the inner box 12 and the bottom surface portion 17 of the outer box 11.

  As already described, for example, the outer surfaces of the vacuum heat insulating materials 30 to 33 are the inner surfaces of the outer box 11, that is, the inner surface 14A of the ceiling surface portion 14, the inner surfaces 15A and 16A of the left and right side surface portions 15 and 16, and the inner surfaces of the bottom surface portion 17. It can be attached to 17A using an adhesive.

  However, considering that the vacuum heat insulating materials 30, 31, 32, and 33 can be replaced with new vacuum heat insulating materials later, the inner surface 14A of the ceiling surface portion 14 and the inner surfaces 15A of the left and right side surface portions 15, 16 are used. 16A and the inner surface 17A of the bottom surface portion 17 may be provided with plate-like vacuum heat insulating materials 30, 31, 32 and 33, respectively, without using an adhesive.

  As shown in FIG. 2, the outer box 11 and the inner box 12 of the main body 2 have four corners C, but each corner C has a similar structure. There is a feature in the arrangement of the vacuum heat insulating materials 30 to 33 at the four corners C. That is, the upper end portions 31T and 32T of the vertical vacuum heat insulating materials 31 and 32 reach the inner surface 14A of the ceiling surface portion 14 and come into contact therewith. Similarly, lower end portions 31 </ b> R and 32 </ b> R of the vertical vacuum heat insulating materials 31 and 32 reach the inner surface 17 </ b> A of the bottom surface portion 17 and are in contact with each other. However, it is not necessary that all the surfaces of the end portions are in contact with each other, and it is sufficient that at least a part thereof is in contact. Further, the upper end portions of the vacuum heat insulating materials 31 and 32 may be slightly separated from the inner surface of the ceiling surface portion 14. For example, the upper end portions of the vacuum heat insulating materials 31 and 32 only need to be above the lower surface of the vacuum heat insulating material 30, and preferably above the middle portion of the vacuum heat insulating material 30. The lower end portions of the vacuum heat insulating materials 31 and 32 may be located below the upper surface of the vacuum heat insulating material 33, and preferably lower than the middle portion of the vacuum heat insulating material 30.

  In contrast, the left and right end portions 30F and 30G of the upper horizontal vacuum heat insulating material 30 are in contact with the inner side surfaces 31N and 32N of the vertical vacuum heat insulating materials 31 and 32, respectively. Similarly, the left and right ends 33F and 33G of the lower horizontal vacuum heat insulating material 33 are in contact with the inner side surfaces 31N and 32N of the vertical vacuum heat insulating materials 31 and 32, respectively.

  Thus, at each corner C, the upper horizontal vacuum heat insulating material 30 and the lower horizontal vacuum heat insulating material 33 are sandwiched between the left and right vertical vacuum heat insulating materials 31 and 32. Is arranged in. Thereby, in the structure which consists of the outer box 11, the inner box 12, and the vacuum heat insulating materials 30-33, since each corner | angular part C is filled with a vacuum heat insulating material and there is no clearance gap, the heat insulation performance in each corner | angular part C is ensured. In addition, air can be prevented from leaking. In other words, each corner C has a role of preventing vacuum leakage in which air leaks from the inside of the refrigerator 1 to the outside of the outer box 11 through the gap between the corners C, and increases the rigidity at each corner C of the main body 2. it can.

  FIG. 4 shows an example of the structure of the vacuum heat insulating materials 30, 31, 32, 33 already described. FIG. 5A is a perspective view showing the vacuum heat insulating materials 30 to 33, and FIG. 5B shows a cross-sectional structure of the vacuum heat insulating materials 30 to 33.

  As shown in FIGS. 4 (A) and 4 (B), the vacuum heat insulating materials 30, 31, 32 and 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.

(Second Embodiment)
FIG. 5 shows a second embodiment of the present invention and shows an example of the structure of one corner C on the upper right side. However, the structure of the four corners C is substantially the same as the structure of the corners C shown in FIG.

  In the main body 2 of the second embodiment of the present invention shown in FIG. 5, a method of accommodating the sealing portions 72 and 73 of the vacuum heat insulating materials 30 and 32 when the outer box 11 and the vacuum heat insulating materials 30 and 32 are assembled is illustrated. ing.

  As shown in FIG. 5, the sealing portion 73 of the vacuum heat insulating material 30 is bent toward the inner surface 14 </ b> A side of the ceiling surface portion 14 of the outer box 11 and is disposed in the recess 30 </ b> N of the vacuum heat insulating material 30. Similarly, the sealing portion 72 of the vacuum heat insulating material 32 is bent toward the inner surface 16 </ b> A side of the side surface portion 16 of the outer box 11 and is disposed in the recess 32 </ b> N of the vacuum heat insulating material 32. That is, the sealing portions 72 and 73 are not bent on the inner surface side of the inner box 12. The method of storing the sealing portions 72 and 73 is the same for the remaining three corners C.

  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 not to be affected by the thickness of the sealed portions 72 and 73 where the inner box 12 is bent, the sealed portions 72 and 73 are bent to the outer box 11 side and further into the recesses 30N and 32N. By storing, the flatness of the outer box 11 and the inner box 12 can be secured, and the inner box 12 can be neatly arranged with respect to the vacuum heat insulating materials 30, 31, 32, 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.

  In the first embodiment and the second embodiment of the present invention described above, the vacuum heat insulating materials 30, 31, 32, 33 are arranged between the outer box 11 and the inner box 12, and the vacuum heat insulating material 30 is also provided at each corner C. , 31, 32, 33 are in contact with each other, and the corner C is filled with the vacuum heat insulating material. Thereby, the heat insulation performance in each corner | angular part C is securable. A rectangular vacuum heat insulating material is disposed in advance on the back side of the main body 2.

(Third embodiment)
FIG. 6 shows a third embodiment of the present invention.

  The structure of the main body 2 shown in FIG. 6 is different from the structure of the main body 2 shown in FIG. 2 in the following points.

  In the main body 2 shown in FIG. 6, the outer box 11 and the inner box 12 of the main body 2 have four corners C, but each corner C has a similar structure. Although the vacuum heat insulating materials 30 to 33 are arranged at the four corners C, the vacuum heat insulating materials 30 to 33 are characterized in how they are arranged. That is, the left and right end portions 30C and 33D of the vacuum heat insulating material 30 in the horizontal direction (X direction) are in contact with the inner surfaces 15A and 16A of the left and right side surface portions 15 and 16 of the outer box 11, respectively. Similarly, the left and right end portions 33C and 33D of the horizontal vacuum heat insulating material 33 are in contact with the inner surfaces 15A and 16A of the left and right side surface portions 15 and 16 of the outer box 11, respectively.

  On the other hand, the upper and lower ends 31F and 31G of the vacuum heat insulating material 31 in the vertical direction (Z direction) are in contact with the inner surfaces 30M and 33M of the vacuum heat insulating materials 30 and 33 in the horizontal direction, respectively. Similarly, the upper and lower ends 32F and 32G of the vertical vacuum heat insulating material 32 are in contact with the inner surfaces 30M and 33M of the horizontal vacuum heat insulating materials 30 and 33, respectively.

  As described above, in each corner C, the vertical vacuum heat insulating materials 31 and 32 are arranged between the upper and lower horizontal heat insulating materials 30 and 33. Thereby, in the structure which consists of the outer box 11, the inner box 12, and the vacuum heat insulating materials 30-33, since each corner | angular part C is satisfy | filled with the vacuum heat insulating material, since space does not arise, the heat insulation in each corner | angular part C is carried out. Performance can be ensured and air can be prevented from leaking. In other words, each corner C has a role of preventing vacuum leakage in which air leaks from the inside of the refrigerator 1 to the outside of the outer box 11 through the gap between the corners C, and increases the rigidity at each corner C of the main body 2. it can.

(Fourth embodiment)
FIG. 7 shows a fourth embodiment of the present invention and shows an example of the structure of one corner C on the upper right side. However, the structure of the four corners C is substantially the same as the structure of the corner C shown in FIG.

  In the main body 2 of the fourth embodiment of the present invention shown in FIG. 7, when assembling the outer box 11 and the vacuum heat insulating materials 30 and 32, a method of housing the sealing portions 72 and 73 is illustrated.

  As shown in FIG. 7, the sealing portion 73 of the vacuum heat insulating material 30 is bent toward the inner surface 14 </ b> A side of the ceiling surface portion 14 of the outer box 11, and is disposed in the recess 30 </ b> H of the vacuum heat insulating material 30. Similarly, the sealing portion 72 of the vacuum heat insulating material 32 is bent toward the inner surface 16 </ b> A side of the side surface portion 16 of the outer box 11 and is disposed in the recess 32 </ b> J of the vacuum heat insulating material 32. That is, the sealing portions 72 and 73 are not bent on the inner surface side of the inner box 12. This is the same for the remaining three corners C.

  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 portions 72 and 73, the sealing portions 72 and 73 are bent toward the outer box 11 and further into the recesses 30 </ b> H and 32 </ b> J. By storing, the flatness of the outer box 11 and the inner box 12 can be secured, and the inner box 12 can be neatly arranged with respect to the vacuum heat insulating materials 30, 31, 32, 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.

(Fifth embodiment)
FIG. 8 shows a fifth embodiment of the present invention.

  As shown in FIG. 8A, for example, the inner surface 14A of the ceiling surface portion 14, the inner surfaces 15A and 16A of the left and right side surface portions 15 and 16, and the inner surface 17A of the bottom surface portion 17 are each provided with a plate-like vacuum heat insulating material 30. , 31, 32, 33 are fixed using, for example, an adhesive. The vacuum heat insulating materials 30, 31, 32, and 33 are not separate members but are connected in a continuous manner, and are integrated.

  This vacuum heat insulating material 30, 31, 32, 33 has the following special shape. That is, in the positions corresponding to the mountain fold portion 18, the mountain fold portion 19, and the mountain fold portion 20, the recessed portions 90 having a semicircular cross section as illustrated in FIG. , 32, 33. Further, the end portion 21 of the left side surface portion 15 and the end portion 22 of the bottom surface portion 17 are each formed with a recessed portion 91 having a ¼ circular cross section. The dent portion 90 has the same semicircular cross section as that of the dent portion 90. Therefore, the vacuum heat insulating materials 30, 31, 32, and 33 are continuously formed using the connection portion 95 that is thinner than the thickness of the vacuum heat insulating material.

  Thus, as shown in FIG. 8C, when the ceiling surface portion 14, the left and right side surface portions 15, 16 and the bottom surface portion 17 are bent at the mountain fold portion 18, the mountain fold portion 19 and the mountain fold portion 20, The vacuum heat insulating materials 30, 31, 32, and 33 can be easily bent at the three recessed portions 90. For this reason, the outer box 11 having the vacuum heat insulating materials 30, 31, 32, 33 can be easily obtained. Since the connection part 95 of the recessed part 90 of three semicircular cross sections is formed thinly compared with the thickness of the vacuum heat insulating materials 30, 31, 32, 33, the vacuum heat insulating materials 30, 31, 32, 33 are It can be easily bent at the corner C to form a box shape.

(Sixth embodiment)
FIG. 9 shows a sixth embodiment of the present invention.

  As shown in FIG. 9A, for example, the inner surface 14A of the ceiling surface portion 14, the inner surfaces 15A and 16A of the left and right side surface portions 15 and 16, and the inner surface 17A of the bottom surface portion 17 are each provided with a plate-like vacuum heat insulating material 30. , 31, 32, 33 are fixed using, for example, an adhesive. The vacuum heat insulating materials 30, 31, 32, and 33 are separate members from each other and are disconnected from each other.

  At positions corresponding to the mountain fold portion 18, the mountain fold portion 19, and the mountain fold portion 20, a recessed portion 100 having a substantially cross-sectional triangle shape as illustrated in FIG. , 32, 33. Further, as shown in FIG. 9 (A), the end portion 21 of the left side surface portion 15 and the end portion 22 of the bottom surface portion 17 are each formed with a recessed portion 101 having a triangular cross section, and two adjacent portions are formed. By combining the recessed portions 101, a recessed portion having the same cross-sectional triangle shape as the other recessed portions 100 is formed.

  As a result, as shown in FIG. 9C, at the corner portion C, the ceiling surface portion 14, the left and right side surface portions 15, 16, and the bottom surface portion 17 are replaced by a mountain fold portion 18, a mountain fold portion 19, and a mountain fold portion 20. When bending, the vacuum heat insulating materials 30, 31, 32, and 33 can be easily bent at the recessed portions 100 having three triangular sections. For this reason, the outer box 11 having the vacuum heat insulating materials 30, 31, 32, 33 can be easily obtained. That is, the three recessed portions 100 having a triangular cross section separate the vacuum heat insulating materials 30, 31, 32, 33 from each other, and the vacuum heat insulating materials 30, 31, 32, 33 are easily bent at the corner C. It can be formed in a box shape. The inner box side ends of the vacuum heat insulating materials 30 and 32 only need to be shorter than the outer box side ends.

  As shown in FIG. 9 (C), the end portions of the vacuum heat insulating materials 30 and 32 at the corner C are in contact with each other because they are 45-degree fastening portions 120. . However, another heat insulating material 130 is preferably disposed inside the retaining portion 120. Thereby, even if a gap is generated in the fastening portion 120 in the corner C, the other heat insulating material 130 can block the gap generated in the corner, so that the heat insulating performance of the corner C is ensured. be able to.

  10 and 11 further show another embodiment of the present invention.

  In the embodiment of the present invention shown in FIG. 10 (A), two indented portions 140 having a semicircular cross section are formed between adjacent vacuum heat insulating materials 30 to 33, and the adjacent vacuum heat insulating materials 30 and 32 are They are connected by a thin connection portion 141. Even in this case, since the connection portion 141 is formed thinner than the thickness of the vacuum heat insulating material, the vacuum heat insulating materials 30, 31, 32, and 33 are easily bent at the corner portion C to form a box shape. be able to. The connecting portion 141 does not need to have a core material, and it is only necessary to connect the sealing portions 72 and 73 of the laminate film having a metal film that is a bag that wraps the core material.

  In another embodiment of the present invention shown in FIG. 10B, the adjacent vacuum heat insulating materials 30 and 32 are separate members, and a gap SS is formed in advance in the vacuum heat insulating materials 30 and 32. For this reason, as shown in FIG. 10C, a gap SS is formed between the end portions 30K and 32K of the vacuum heat insulating materials 30 and 32 at the corner C. As described above, when the gap SS is generated at the corner C, for example, when it is desired to adjust the position by moving the vacuum heat insulating material 30 in the horizontal direction in the direction of the arrow V, the gap prepared in advance is used. The position of the vacuum heat insulating material 30 can be easily adjusted using SS.

  In another embodiment of the present invention shown in FIG. 11, the adjacent vacuum heat insulating materials 30 and 32 at the corner C are separate members but are covered with a laminate film 71. A gap SS is formed in the vacuum heat insulating materials 30 and 32. For example, when it is desired to adjust the position by moving the vertical vacuum heat insulating material 32 in the arrow P direction, the slack portion 145 of the laminate film 71 can be sandwiched and stored.

  FIG. 12 shows an example of the manufacturing method of the embodiment of the present invention.

  As shown in FIG. 12A, vacuum heat insulating materials 30, 31, and 32 are attached in advance to the metal plate 13M. These vacuum heat insulating materials 30, 31 and 32 are respectively fixed with a ceiling surface portion 24 and side surface portions 25 and 26 which are metal plates. A recessed portion 90 is formed between the vacuum heat insulating materials 30, 31 and 32.

  As shown in FIGS. 12A to 12B, when the metal plate 13M is bent at the recessed portion 90, the ceiling surface portion 14 and the left and right side surface portions 15 and 16 can be formed, and the side surface portions 25 and 26 face each other. . And the vacuum heat insulating material 33 is attached to the bottom face part 17 of a metal plate. A metal plate bottom surface 27 is attached to the vacuum heat insulating material 33. The bottom surface portion 17 is fixed to the mounting portions 15D and 16D of the left and right side surface portions 15 and 16 using screws 99. Thereby, as shown in FIG.12 (C), the refrigerator which has the outer box 11, the inner box 12, and the vacuum heat insulating materials 30-33 is obtained.

  As shown in FIG. 12C, a cover member 199 that covers the gap of the corner portion CN is disposed at the corner portion CN of the inner box 12. This covering member 199 has a role of a holding member for holding the formation angle of the corner portion CN at 90 degrees and a function of preventing light from entering by closing a gap between the corner portions CN. As a result, the ceiling surface portion 24 and the side surface portions 25 and 26 are bent to prevent the 90-degree angle from being maintained. In the covering member 199, an electric wire, piping, a cold air passage, and the like can be formed. As described above, the inner box 12 is configured by a plurality of plates, and adjacent end portions of the plurality of plates are connected by thin connection portions (recessed portions 90), or adjacent heat insulating materials are cut off. It is placed in a place. Thereby, the metal plate 13M can be easily bent at the recessed portion 90, and the inner box 12 can be formed at the same time.

  In any embodiment of the present invention described above, another rectangular vacuum heat insulating material forms the outer box 11 in the opening 56 on the back side of the outer box 11 of the main body 2 shown in FIG. It can arrange | position, after arranging the inner box 12 in the outer box 11, when doing.

  A refrigerator according to an embodiment of the present invention includes 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, and the corners of the outer box and the inner box. Are arranged so that adjacent vacuum heat insulating materials are in contact with each other. Thereby, since the corner | angular part of a refrigerator is satisfy | filled with a vacuum heat insulating material, the heat insulation performance of a corner | angular part is securable. Thus, at the corners, the end portions of the vacuum heat insulating material arranged in the horizontal direction among the adjacent vacuum heat insulating materials are in contact with the side surfaces of the vacuum heat insulating material arranged in the vertical direction. Thereby, since the corner | angular part of a refrigerator is satisfy | filled with a vacuum heat insulating material, since a clearance gap does not arise in a corner | angular part, the heat insulation performance of a corner | angular part is securable.

  Moreover, in the corner | angular part, the edge part of the vacuum heat insulating material arrange | positioned in the vertical direction among the adjacent vacuum heat insulating materials is contacting the side surface of the vacuum heat insulating material arrange | positioned in the horizontal direction. Thereby, since the corner | angular part of a refrigerator is satisfy | filled with a vacuum heat insulating material, the heat insulation performance of a corner | angular part is securable.

  At the corner, the end of the vacuum heat insulating material arranged in the vertical direction among the adjacent vacuum heat insulating materials is in contact with the side surface of the vacuum heat insulating material arranged in the horizontal direction. Thereby, since the corner | angular part of a refrigerator is satisfy | filled with a vacuum heat insulating material, the heat insulation performance of a corner | angular part is securable.

  The vacuum heat insulating material has a core material and a film covering the vacuum heat insulating material, and the sealing portion of the film in which the film seals the core material is disposed on the inner surface side of the outer box. . Thereby, since a sealing part can be arrange | positioned at the outer case side, since it is not necessary to arrange | position at the plastic inner case side, for example, the flatness of an inner case is securable.

  The corner portion of the outer box is formed by bending a continuous plate, and in the corner portion, the adjacent vacuum heat insulating material is connected by a thin connection portion, or the adjacent vacuum heat insulating material is disconnected. . Thereby, the vacuum heat insulating material can be easily bent in accordance with the shape of the corner portion of the outer box by using the thin connection portion or the disconnected portion at the corner portion while ensuring the heat insulating performance at the corner portion.

  At the corners, the ends of adjacent vacuum heat insulating materials are arranged so as to contact each other. Thereby, since the corner | angular part of a refrigerator is satisfy | filled with a vacuum heat insulating material, the heat insulation performance in a corner | angular part is securable. Since the heat insulating material is disposed between the ends of the adjacent vacuum heat insulating materials, even if a slight gap is generated between the end portions, the heat insulating material can block the gap. Insulation performance at the corners can be ensured.

  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 11 Outer box 12 Inner box 30 Vacuum heat insulating material 31 Vacuum heat insulating material 32 Vacuum heat insulating material 33 Vacuum heat insulating material 70 Core material 71 Laminating film 72 Sealing part 73 of laminating film 73 Sealing part 130 of laminating film Heat insulating material C 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,
The refrigerator characterized by arrange | positioning so that the said adjacent vacuum heat insulating material may mutually contact in the corner | angular part of the said outer box and the said inner box.   In the corner portion, the end portion of the vacuum heat insulating material arranged in the horizontal direction among the adjacent vacuum heat insulating materials is in contact with the side surface of the vacuum heat insulating material arranged in the vertical direction. The refrigerator according to claim 1.   In the corner portion, an end portion of the vacuum heat insulating material arranged in the vertical direction among the adjacent vacuum heat insulating materials is in contact with a side surface of the vacuum heat insulating material arranged in the horizontal direction. The refrigerator according to claim 1.   The vacuum heat insulating material has a core material and a film covering the vacuum heat insulating material, and the sealing portion of the film in which the film seals the core material is an inner surface of the outer box The refrigerator according to any one of claims 1 to 3, wherein the refrigerator is arranged on a side.   The corner part of the outer box is formed by bending a continuous plate, and in the corner part, the adjacent vacuum heat insulating material is connected by a thin connection portion or the adjacent vacuum heat insulating material. The refrigerator according to claim 1, wherein the refrigerator is cut off.   2. The refrigerator according to claim 1, wherein at the corner portion, the end portions of the adjacent vacuum heat insulating materials are arranged to contact each other.   The refrigerator according to claim 6, wherein a heat insulating material is disposed between the end portions of the adjacent vacuum heat insulating materials.   The inner box is composed of a plurality of plates, and the adjacent ends of the plurality of plates are connected at a thin connection portion, or are disposed where the adjacent vacuum heat insulating material is disconnected. The refrigerator according to claim 1.

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