CN108278847B - Electric refrigerator - Google Patents

Abstract

The inner box is formed of one integrally molded product by die molding, and therefore, there is a problem that a large die is required and the manufacturing cost is high. Thus, a low-cost refrigerator is provided. The refrigerator is provided with a heat insulation box body, and the heat insulation box body is provided with: an outer case (14); an inner box (15) provided inside the outer box (14); and a vacuum insulation panel (16) which is provided between the outer box (14) and the inner box (15), and at least a part of the inner box (15) is formed of flat plate-like sheet members (Sa, Sb).

Description

Electric refrigerator

The application is a divisional application of Chinese patent application with application date of 2012, 5 and 11 and application number of 201280039506.2, entitled refrigerator.

Technical Field

Embodiments of the present invention relate to a refrigerator.

Background

In recent years, a heat insulation box body of a refrigerator has a structure in which a vacuum heat insulation panel is provided between an inner box and an outer box. In this case, the entire inner box is formed of an integrally molded product formed by injection molding and/or vacuum molding.

Documents of the prior art

Patent document 1: japanese patent application laid-open No. Hei 4-260780;

patent document 2: japanese patent application laid-open No. 6-147744.

Disclosure of Invention

Problems to be solved by the invention

In the refrigerator, the inner box is formed of one integrally molded product by die molding, and thus, there is a problem in that a large die is required and manufacturing cost is high.

Thus, a low-cost refrigerator is provided.

Means for solving the problems

The refrigerator of the embodiment is provided with a heat insulation box body, and the heat insulation box body is provided with: an outer box; an inner box disposed inside the outer box; and a vacuum insulation panel provided between the outer casing and the inner casing, at least a part of the inner casing being formed of a flat plate-like sheet member.

Drawings

Fig. 1 is a perspective view of a heat insulating box of a refrigerator according to a first embodiment as viewed from below.

Fig. 2 is a perspective view of the heat insulating box viewed from above.

Fig. 3 is a perspective view of the refrigerator viewed from above.

FIG. 4 is a cross-sectional top view of the insulated box.

Fig. 5 is an exploded perspective view of the left side heat insulating wall.

Fig. 6 is a perspective view of the upper inner plate portion as viewed from below.

Fig. 7 is a perspective view of the lower inner plate portion as viewed from above.

Fig. 8 is an enlarged view of a portion indicated by the symbol K in fig. 4.

Fig. 9 is a cross sectional plan view of corner portions of the left side insulating wall and the depth side insulating wall.

Fig. 10 is a front longitudinal sectional view of a corner portion of the left side insulating wall and the upper side insulating wall.

Fig. 11 is an exploded perspective view of the fixing member and the left inner plate portion.

Fig. 12 is a perspective view showing a state in which the fixing member is attached to the left inner plate portion.

Fig. 13 is a longitudinal sectional side view showing the periphery of the fastener.

Fig. 14 is a vertical cross-sectional side view showing a state where the coupling plate is attached to the fixing tool.

Fig. 15 is a cross-sectional plan view showing a joint portion between the cross member and the left side heat insulating wall.

Fig. 16 is a perspective view of the shelf support as viewed from the inside.

FIG. 17 is an exploded vertical sectional side view of the shelf support and left inner plate portion and screws.

Fig. 18 is a vertical sectional side view showing an installation state of the shelf support.

Fig. 19 is a view corresponding to fig. 1 of the second embodiment.

Fig. 20 is a view corresponding to fig. 2.

Fig. 21 is a view corresponding to fig. 5.

Fig. 22 is a view corresponding to fig. 9.

Fig. 23 is a longitudinal sectional side view showing the shelf supporting portion.

Fig. 24 is a longitudinal sectional side view of the shelf supporting portion at a position different from that of fig. 23.

Fig. 25 is an exploded perspective view of the shelf support and the reinforcing plate as viewed from the rear side.

Fig. 26 is a longitudinal sectional side view of the partition wall supporting portion.

Fig. 27 is a perspective view of the partition wall supporting portion.

Fig. 28 is a view corresponding to fig. 1 of the third embodiment.

Fig. 29 is a view corresponding to fig. 5.

Fig. 30 is a view corresponding to fig. 18 showing the fourth embodiment.

Fig. 31 is a view corresponding to fig. 17.

Fig. 32 is a longitudinal sectional front view showing a part of a heat insulating box body of a refrigerator according to a fifth embodiment.

Fig. 33 is a front view in vertical section, in which a part of the heat insulating box is developed.

Fig. 34 is a front vertical sectional view showing an exploded state of a part of the heat insulation box.

Detailed Description

A refrigerator according to a plurality of embodiments will be described with reference to the accompanying drawings. In the embodiments, substantially the same components are denoted by the same reference numerals, and description thereof is omitted.

(first embodiment)

First, a refrigerator 1 according to a first embodiment will be described with reference to fig. 1 to 18. The refrigerator 1 shown in fig. 3 is mainly constituted by a heat insulating box 2. As shown in fig. 1, the heat-insulating box body 2 has an opening formed in one surface. In the present specification, the opening side of the heat insulating box 2 is set to be the front side of the refrigerator 1 as the heat insulating box 2. The left-right direction of the drawing sheet of fig. 1 is the left-right direction of the refrigerator 1 as the heat insulating box 2.

As shown in fig. 3, a left swing door 3 and a right swing door 4 which are rotatable are provided on the front surface side of the heat insulating box 2, and a plurality of pull-out doors 5 to 8 are provided. Each of the doors 3 to 8 has an insulating material therein. As shown in fig. 1 and 2, heat-insulating box 2 includes hinges 3a and 3b and hinges 4a and 4 b. The left swing door 3 is rotatably supported by a pair of upper and lower hinge portions 3a and 3 b. The right swing door 4 is rotatably supported by a pair of upper and lower hinge portions 4a and 4 b.

The heat insulation box body 2 is formed by connecting a plurality of divided unit heat insulation walls 9-13. That is, the heat-insulating box body 2 is configured by connecting the left heat-insulating wall 9, the right heat-insulating wall 10, the upper heat-insulating wall 11, the lower heat-insulating wall 12, and the depth-side heat-insulating wall 13.

The heat-insulating box 2 has beam members 51, 52, 53 and a column member 54. The beam members 51, 52, 53 are provided on the opening side of the heat insulation box 2. The cross members 51, 52, 53 laterally connect the left and right edges of the heat-insulating box 2, i.e., the left and right heat-insulating walls 9, 10. The column member 54 connects the cross members 52, 53 in the longitudinal direction at the midway portions of the cross members 52, 53 in the left-right direction. A first partition wall 55 for partitioning the storage chamber is provided on the rear side of the cross member 51. A second partition wall 56 for partitioning the storage chamber is provided on the rear side of the cross member 52.

The heat-insulating box 2 has a refrigerating compartment 57, a vegetable compartment 58, a small freezing compartment 59, an ice-making compartment 60, and a freezing compartment 61 as storage compartments therein. The refrigerating chamber 57 is formed above the first partition wall 55. The vegetable compartment 58 is formed between the first partition wall 55 and the second partition wall 56. A small freezing chamber 59 is formed between the cross member 52 and the cross member 53 and on the right side of the pillar member 54. The ice making compartment 60 is formed between the cross member 52 and the cross member 53 and on the left side of the column member 54, i.e., the left side of the small freezing compartment 59. The freezing chamber 61 is formed below the cross member 53.

As shown in fig. 3, the opening in the front surface of refrigerating compartment 57 is opened and closed by swing doors 3 and 4. The opening of the front surface of the vegetable compartment 58 is opened and closed by the pull-out door 5. The pull-out door 5 integrally has a vegetable container, not shown, on a rear surface side thereof. The opening of the front surface of the small freezing chamber 59 is opened and closed by the pull-out door 6. The drawer door 6 integrally has a refrigerated-product storage container, not shown, on a rear surface side thereof. The opening of the front surface of the ice making compartment 60 is opened and closed by the pullout door 7. The pull-out door 7 integrally has an ice container, not shown, on a rear surface side thereof. The opening of the front surface of the freezing chamber 61 is opened and closed by a pull-out door 8. The drawer door 8 integrally has a frozen product container, not shown, on a rear surface side thereof.

The second partition wall 56 shown in fig. 1 and 2 has a heat insulating material such as foamed styrene and/or foamed urethane (foam ウレタン) therein. In this way, second partition wall 56 thermally separates small freezing compartment 59, ice making compartment 60, and vegetable compartment 58, which have large storage temperature differences. The first partition wall 55 is made of, for example, a synthetic resin plate material. Thus, the first partition wall 55 partitions the refrigerating chamber 57 and the vegetable chamber 58, which have a small difference in storage temperature.

Next, the heat insulating box 2 and the heat insulating walls 9 to 13 will be described. As shown in fig. 1 and 2, the outer box 14 constitutes the entire outer contour of the heat insulating box 2. The outer box 14 is formed by combining a plurality of outer plate sections. That is, the outer box 14 is formed by combining the left outer plate portion 14A, the right outer plate portion 14B, the upper outer plate portion 14C, the lower outer plate portion 14D, and the rear outer plate portion 14E. The left outer plate portion 14A constitutes the left outer surface of the outer box 14. The right outer plate portion 14B constitutes a right outer surface of the outer box 14. The upper outer plate portion 14C constitutes an upper outer surface of the outer box 14. The lower outer plate portion 14D constitutes a lower outer surface of the outer box 14. The rear outer plate portion 14E constitutes a rear outer surface of the outer box 14. Each of the outer plate portions 14A to 14E is made of a steel plate. The left outer plate portion 14A and the right outer plate portion 14B are configured to be bilaterally symmetrical.

The inner case 15 constitutes an inner surface of the heat-insulating case 2. The inner box 15 is formed by combining a plurality of divided inner plate portions. That is, the inner box 15 is configured by combining the left inner plate portion 15A, the right inner plate portion 15B, the upper inner plate portion 15C, the lower inner plate portion 15D, and the depth inner plate portion 15E. The left inner plate portion 15A constitutes the left inner surface of the inner case 15. The right inner plate portion 15B constitutes the right inner surface of the inner case 15. The upper inner plate portion 15C constitutes an upper inner surface of the inner case 15. The lower inner plate portion 15D constitutes a lower inner surface of the inner case 15. The depth inner plate portion 15E constitutes a depth inner surface of the inner case 15.

The left inner panel 15A and the right inner panel 15B are formed symmetrically. The left inner panel 15A and the right inner panel 15B are made of synthetic resin such as ABS resin, and are formed of a flat plate-like sheet member Sa. In fig. 5, the sheet member Sa is shown with the later-described mount 26, shelf support 30, rail mounts 33 and 34, and partition wall supports 35 and 36 attached in advance.

As shown in fig. 6, the upper inner plate portion 15C integrally has an L-shaped portion 17. The L-shaped portion 17 functions as a bent portion and bulges into the box, i.e., the inside of the heat-insulating box body 2. The upper inner plate portion 15C is formed of an integrally molded part la made of synthetic resin such as olefin resin, for example.

As shown in fig. 7, the lower inner panel portion 15D integrally has a drain receiving portion 18. The drain receiving portion 18 functions as a bent portion. The lower inner plate portion 15D is formed of an integrally molded part lb made of synthetic resin. The integrally molded articles la, lb are formed by injection molding and/or vacuum molding.

As shown in fig. 1 and 2, the depth inner plate portion 15E is formed of a flat plate-like sheet member Sb made of synthetic resin. The sheet members Sa and Sb can be produced by extrusion molding, calender molding, or the like without using a die having a special shape. Further, a commercially available flat plate-like sheet member may be used.

As shown in fig. 4, between the outer case 14 and the inner case 15, a vacuum insulation panel 16 is provided. The vacuum insulation panel 16 is formed of a plate-shaped unit plate divided into a plurality of pieces. That is, the vacuum insulation panel 16 includes a left unit panel 16A, a right unit panel 16B, an upper unit panel 16C shown in fig. 10, a lower unit panel not shown, and a depth unit panel 16E. Since the unit plates have basically the same configuration, for example, the left unit plate 16A will be described.

As shown in fig. 8 and 9, the left unit plate 16A is configured by housing the base 19 in the bag body 20 and vacuum-sealing the inside thereof by evacuation. The substrate 19 is a member formed into a plate shape by compressing and hardening a laminate of inorganic fibers such as glass wool. In order to obtain airtightness which makes it difficult for gas to pass through, the bag body 20 includes a metal layer such as an aluminum vapor deposition layer and/or an aluminum foil layer. Each unit panel is generally referred to as a vacuum insulation panel.

As shown in fig. 5, the left heat insulating wall 9 is configured as a unit heat insulating wall by disposing a left unit plate 16A between the left outer plate portion 14A and the left inner plate portion 15A and bonding the three with an adhesive.

As shown in fig. 8, the front ends of the outer box 14 and the inner box 15, that is, the front ends of the left insulating wall 9 and the right insulating wall 10 are connected by a front end connecting member 21. That is, when the front end portion of the left heat insulating wall 9 is viewed, the front end portions of the left outer plate portion 14A and the left inner plate portion 15A are coupled to each other by the front end coupling member 21. The distal end connecting member 21 is made of synthetic resin and has heat insulating properties. In this case, the front end portion of the left heat insulating wall 9 and the front end portion of the right heat insulating wall 10 are bilaterally symmetrical, and therefore, the configuration of the front end portion of the left heat insulating wall 9 will be described.

The front end portions of the left outer plate portion 14A and the left inner plate portion 15A extend forward from the front end portion of the left unit plate 16A. The left outer plate portion 14A is bent at the front end toward the left inner plate portion 15A, and extends to the central portion in the thickness direction of the left unit plate 16A. The bent portion at the front end of the left outer plate portion 14A is a bent portion 14 Aa. In this case, the bent portion 14Aa does not enter the storage compartment side, which is the inside of the heat insulating box 2. That is, the bent portion 14Aa does not extend to the right side of the left inner plate portion 15A. This can suppress the inflow of heat from the outside of the heat-insulating box 2 into the storage chamber through the outer box 14, in this case, through the left outer plate portion 14A.

A heat insulating material, such as a soft tape (ソフトテープ)22, is provided in an internal space defined by the front end of the left unit plate 16A, the inner surface of the front end of the left outer plate 14A, and the inner surface of the front end connecting member 21. Further, foamed styrene may be used instead of the soft belt 22.

The right insulating wall 10 has the same configuration as the left insulating wall 9 and is formed in a bilaterally symmetrical shape.

As shown in fig. 10, the upper heat insulating wall 11 has an upper unit plate 16C between the upper outer plate 14C and the upper inner plate 15C. The upper unit plate 16C is bonded to the upper inner plate 15C. Foam urethane 24 is filled between the upper unit plate 16C and the upper outer plate portion 14C. As shown in fig. 2, the upper outer plate portion 14C has an L-shaped portion 17a corresponding to the L-shaped portion 17 of the upper inner plate portion 15C. Thus, the entire rear portion of the upper heat insulating wall 11 protrudes downward. That is, the upper heat insulating wall 11 has a concave portion 11a at the rear. The space behind the concave portion 11a functions as a machine chamber 11 b. The machine chamber 11b is provided with a compressor, a condenser, and the like, not shown, which constitute a refrigeration cycle. As shown in fig. 3, the machine room 11b is closed by a machine room cover 11 c.

As shown in fig. 10, the dimension between the upper unit plate 16C and the upper outer plate 14C, that is, the thickness dimension of the portion filled with the foamed urethane 24 is set to be smaller than the thickness of the upper unit plate 16C and smaller than the outer diameter of a pipe, for example, a suction pipe, of the refrigeration cycle. Thus, the amount of the foamed urethane 24 used can be reduced. In fig. 10, when piping for the refrigeration cycle is arranged (drawn き back わす), the piping can be passed in the front-rear direction at the corner of the upper left portion of the heat insulation box 2. In this case, the corner represents a space surrounded by the left end surface of the upper unit plate 16C, the upper end surface of the left unit plate 16A, the left end edge of the upper outer plate 14C, and the upper end edge of the left outer plate 14A.

As shown in fig. 10, the left end of the upper outer plate 14C is connected to the left outer plate 14A away from the upper surface of the upper unit plate 16C. Although not shown in detail, the right end portion of the upper outer plate portion 14C is similarly separated from the upper surface of the upper unit plate 16C and connected to the right outer plate portion 14B. The upper inner plate 15C has a connection portion 15C 1. As shown in fig. 6, the connection portion 15C1 is provided at both left and right side edges of the upper inner plate portion 15C. As shown in fig. 10, the connection portion 15C1 connects the upper inner panel portion 15C and the left inner panel portion 15A. In this case, the front end of the connecting portion 15C1 is connected to the left inner plate 15A by a connector, not shown.

Here, the left connection portion 15C1 will be described. The right connecting portion is configured in the same manner as the left connecting portion 15C1, except that it is symmetrical in the left-right direction. As shown in fig. 10, the coupling portion 15C1 has a rib 15C 2. The rib 15C2 is located inside the distal end of the connecting portion 15C1, i.e., on the urethane foam 24 side, and protrudes upward substantially parallel to the left inner plate portion 15A. Between the rib 15C2 and the left inner panel 15A, for example, a soft tape 23 is inserted as a heat insulator leakage prevention member. The soft band 23 suppresses leakage of the foamed urethane 24 when the foamed urethane 24 is filled.

The lower heat insulating wall 12 has a lower unit plate, not shown, between the lower outer plate portion 14D and the lower inner plate portion 15D. The lower unit plates are bonded to the lower outer plate portion 14D and the lower inner plate portion 15D, respectively. Thus, a unit insulating wall is constructed. The lower insulating wall 12 is formed by bonding the lower inner plate 15D and the lower unit plate, and filling urethane foam between the lower unit plate and the lower outer plate 14D to cure them. In the lower insulating wall 12, the lowermost portion of the drain receiver 18 communicates with the outside of the insulating box 2.

Further, the depth-side heat insulating wall 13 is also configured by disposing a depth unit plate 16E between the rear outer plate portion 14E and the depth inner plate portion 15E and bonding the three with an adhesive. In this case, a composition in which the foam urethane is appropriately filled and cured may be added.

In addition, the integrally molded products la and lb made of olefin resin are formed by surface-processing the surfaces to be bonded to the unit plates to be rough surfaces, so that the adhesiveness to the unit plates is improved in the upper inner plate portion 15C and the lower inner plate portion 15D. Further, since the sheet members Sa and Sb are made of ABS resin, the left inner plate 15A, the right inner plate 15B, and the depth inner plate 15E have good adhesion to the unit plates.

Here, the connection between the left side heat insulating wall 9 and the depth side heat insulating wall 13 will be described with reference to fig. 9 and 11 to 14. The left side heat insulating wall 9 and the depth side heat insulating wall 13 are connected by a sheet member connecting plate 25, a fixing member 26, and the like. In this case, the sheet member connecting plate 25 functions as a sheet member connecting member, and the fixing member 26 functions as a first projecting portion. Next, the structure of the connecting portion between the left side heat insulating wall 9 and the depth side heat insulating wall 13 will be described. The structure of the coupling portion between the right heat insulating wall 10 and the depth heat insulating wall 13 is the same as the structure of the coupling portion between the left heat insulating wall 9 and the depth heat insulating wall 13, except that the coupling portion is symmetrical.

First, the fixture 26 will be explained. The fixing member 26 is provided on each of the left side heat insulating wall 9 and the depth side heat insulating wall 13 so as to protrude toward the inside of the box. The structure of the fixture 26 and the structure of the portion to which the fixture 26 is attached are common to the left heat insulating wall 9 and the depth heat insulating wall 13, and therefore the fixture 26 of the left heat insulating wall 9 will be described below. The fixing member 26 is made of synthetic resin such as ABS resin, and is formed in a vertically long rectangular parallelepiped shape. The fixture 26 has an edge portion 26a and a threaded hole portion 26 c. The edge-shaped portion 26a is located on one end side of the rectangular parallelepiped shape of the fixing member 26 and is provided so as to protrude in the vertical direction. The threaded hole 26c is a female thread formed from the other end surface of the rectangular parallelepiped shape of the fixing 26 toward one end side.

When assembling the left insulating wall 9, first, the fixing member 26 is bonded to the left unit plate 16A. Here, the sealing member Sa, which is the left inner plate portion 15A, has a hole 15u formed in advance in a substantially vertically long rectangular shape. The fixing member 26 is bonded to the left unit plate 16A, and then the hole 15u is inserted from the rear side of the left inner plate 15A, i.e., the left unit plate 16A side, to the front side, i.e., the storage compartment side. At this time, an adhesive is provided between the left unit plate 16A and the left inner plate 15A. Therefore, the left unit plate 16A and the left inner plate 15A are bonded. At this time, the edge-shaped portion 26A is sandwiched between the left inner plate portion 15A and the left unit plate 16A, and the fixing member 26 is fixed. Thus, the fixture 26 is attached to the left insulating wall 9 and projects into the inner box 15. The fixing members 26 are provided at a plurality of positions above and below the adjacent end portions of the left side heat insulating wall 9 and the depth side heat insulating wall 13.

As shown in fig. 1 and 2, the sheet member connecting plate 25 and the left inner plate portion 15A are formed to have substantially the same length in the vertical direction. As shown in fig. 9, the sheet member web 25 has L-shaped recessed portions 25a recessed at both end portions in the horizontal direction. The recesses 25a correspond to the fixing pieces 26, respectively. In the recess 25a, a screw insertion hole portion 25b is formed. A screw 27 is inserted into the screw insertion hole 25 b. The screw 27 is screwed (ね side Write まれる) into the threaded hole portion 26c of the fixture 26. Thus, the left inner plate 15A and the depth inner plate 15E are connected by the sheet member connecting plate 25. The sheet member connecting plate 25 is provided at the corner portions on both sides of the refrigerating compartment 57, the vegetable compartment 58, the small freezing compartment 59, the ice making compartment 60, and the freezing compartment 61.

The styrofoam 28 and the soft band 29 are provided in a space portion on the back side of the sheet member connecting plate 25, that is, a space surrounded by the sheet member connecting plate 25, the left inner plate portion 15A, and the depth inner plate portion 15E. The styrofoam 28 and the soft tape 29 function as a heat insulating member.

Further, the piping of the refrigeration cycle may extend in the vertical direction through the polystyrene foam 28 portion of fig. 9.

As shown in fig. 1 and 5, the shelf supports 30 are provided on the left and right heat insulating walls 9 and 10. Next, the structure of the shelf support 30 will be described with reference to fig. 16 to 18. The shelf supports 30 provided on the right insulating wall 10 are configured similarly to the shelf supports 30 provided on the left insulating wall 9.

The shelf support 30 is a member different from the inner plate portions 15A, 15B formed of the sheet member Sa, and is formed of, for example, synthetic resin such as ABS resin. The shelf support 30 integrally has a main body portion 30a, a shelf support portion 30b, and a threaded hole portion 30 c. The main body 30a is formed in a rectangular plate shape that is long in the vertical direction. The shelf support 30b is provided on one surface of the main body 30a and protrudes into the box. In this case, the shelf support 30b functions as a second protrusion. Three shelf support portions 30b are provided in the vertical direction with respect to the main body portion 30 a. The screw hole 30c is provided at a position corresponding to the shelf support 30b of the main body 30 a. The threaded holes 30c are formed in the main body 30a so as to penetrate the main body 30a from the side of the main body 30a opposite to the shelf support 30b toward the shelf support 30b, and further so as to penetrate the shelf support 30b halfway. The threaded hole 30c has a female thread formed therein. The threaded hole 30c functions as a connecting member engaging portion. A countersink 30d having a so-called countersink shape, which is conically opened, is formed in an opening peripheral edge portion of the screw hole portion 30 c.

As shown in fig. 17, the left inner plate portion 15A has a screw insertion hole portion 31. The screw insertion hole 31 functions as a connection member insertion hole. Three screw insertion holes 31 are provided in a vertical direction in a portion corresponding to refrigerating room 57 shown in fig. 1. Fig. 17 shows one of the three screw insertion holes 31. The shelf support 30 is attached to the left inner plate portion 15A before the left insulating wall 9 is assembled. In this case, the countersunk screws 32 passed through the screw insertion holes 31 of the left inner plate portion 15A are screwed into the threaded hole portions 30c of the shelf support 30. Thus, the shelf support 30 is fixed to the inner surface of the left inner plate portion 15A, i.e., the surface on the refrigerating chamber 57 side, so as to protrude toward the refrigerating chamber 57 side. In this case, the countersunk head screw 32 functions as a connecting member.

In this case, the left inner plate portion 15A is a sheet member and can be deformed slightly. Therefore, in the process of screwing the countersunk screw 32 into the threaded hole 30c, the peripheral edge portion of the screw insertion hole 31 of the left inner plate portion 15A is deformed into a dish shape so as to bulge toward the inside of the refrigerator, that is, toward the refrigerating chamber 57, until the dish-shaped screw head 32a of the countersunk screw 32 reaches the spot facing 30 d. As a result, as shown in fig. 18, the peripheral edge 31a of the screw insertion hole 31 is separated from the left unit plate 16A. Further, the screw head 32a, which is the end of the countersunk screw 32, does not protrude from the back surface of the left inner plate portion 15A toward the left unit plate 16A.

As shown in fig. 1, 2, and 5, the left and right heat insulating walls 9 and 10 are provided with rail attachment pieces 33 and 34. The rail mount 33 corresponds to the vegetable compartment 58, and the rail mount 34 corresponds to the freezing compartment 61. The rail mounts 33, 34 are both made of synthetic resin and are formed of a member different from the sheet member. The rail mounts 33 and 34 function as second protruding portions protruding from the left and right inner plate portions 15A and 15B toward the inside of the box.

The rail mounts 33, 34 are attached to the left inner panel 15A and the right inner panel 15B in the same manner as the shelf supports 30. The rail mounts 33 and 34 are provided with rails, not shown. Although not shown in detail, the guide rail supports the container integrated with the pullout doors 5 and 8 so as to be drawable.

As shown in fig. 1, 2, and 5, partition wall supports 35 and 36 are provided on the left insulating wall 9 and the right insulating wall 10. The partition wall support 35 supports a first partition wall 55, and the partition wall support 36 supports a second partition wall 56. The partition wall supports 35, 36 are both made of synthetic resin and are constituted by a member different from the sheet member. The partition wall supports 35 and 36 are attached to the inner plate portions 15A and 15B by the same configuration as the fixing member 26. In this case, the partition wall supports 35 and 36 function as first protruding portions protruding from the left and right inner plate portions 15A and 15B toward the inside of the tank.

A rear cover attachment 37 is provided at an appropriate position on the inner surface of the inner box 15 of the depth side heat insulating wall 13, that is, on the depth inner plate portion 15E formed of the sheet member Sb. The back cover attachment 37 is made of synthetic resin and is different from the depth inner plate 15E made of the sheet member Sb. The back cover attachment 37 functions as a protruding portion protruding from the depth inner plate portion 15E toward the inside of the case. The back cover attachment 37 is used to attach a back cover for shielding a duct or the like disposed in a front portion of the depth-side heat insulating wall 13. The back cover attachment 37 is attached to the depth inner plate portion 15E by the same configuration as the fixing member 26. In this case, the rear cover attachment 37 functions as a first protruding portion protruding from the deep inner plate portion 15E toward the inside of the box.

Each of the heat insulating walls 9 to 13 is not filled with urethane foam between each of the inner plate portions and each of the unit plates.

As shown in fig. 2, an evaporator 64 of the freezing cycle is disposed in the deep portion of the freezing chamber 61. Below the evaporator 64, a drain water receiving portion 18 is provided. The drain receiving portion 18 receives the defrosting water generated when the frost adhering to the evaporator 64 is removed, and guides the defrosting water to the lower portion outside the depth side heat insulating wall 13.

Next, the structure of the connecting portion between the cross member 52 and the left and right heat insulating walls 9 and 10 will be described with reference to fig. 15. Although fig. 15 shows the connection portion between the cross member 52 and the left heat insulating wall 9, the connection portion between the right heat insulating wall 10 is configured in the same manner except for being symmetrical in the left-right direction. The cross member 52 has a front surface partition plate 52a constituting a front surface portion, a reinforcing plate 52b, a back surface partition cover 52c, and a heat insulating material 52 d. The left outer plate portion 14A of the left insulating wall 9 has a front surface portion 14A 1. The front surface portion 14a1 has a folded portion 14a2 formed by folding back the front end portion.

The front surface separation plate 52a is sandwiched by the reinforcement plate 52b and the folded- back portion 14a 2. When assembling the cross member 52, first, the front partition plate 52a and the reinforcing plate 52b are integrated with the screws 63. The left end portions of the front partition plate 52a and the reinforcing plate 52b are inserted into the back side of the front portion 14A1 of the left outer plate 14A. Then, the screw 62 is passed through the hole of the end portion of the folded back portion 14A2 and the front surface partition plate 52a of the left outer plate portion 14A and screwed into the screw hole of the reinforcement plate 52 b. Thus, the front surface separation plate 52a is sandwiched and fixed between the reinforcement plate 52b and the folded- back portion 14a 2.

A rear partition cover 52c for housing a heat insulator 52d is attached to the rear side of the front partition plate 52 a. The left and right edges of the front opening of the heat insulating box 2 are connected by the front partition plate 52a, and the left and right heat insulating walls 9 and 10 are fixed. Thus, the opening of the front surface of the heat insulating box 2 is prevented from being opened or reduced, and the storage room can be kept in a rectangular parallelepiped.

When the strength of the front surface partition plate 52a is sufficient, the reinforcing plate 52b may not be provided.

Although not shown, the rear partition cover 52c has a mounting portion projecting downward, and the mounting portion is fastened by a screw by a fastener similar to the fastener 26.

According to the first embodiment, the left inner panel 15A and the right inner panel 15B of the inner box 15 are formed by the flat plate-like sheet member Sa. The depth inner plate portion 15E is formed of a flat plate-like sheet member Sb. In this way, since the left inner plate portion 15A, the right inner plate portion 15B, and the depth inner plate portion 15E do not require a forming die in manufacturing, manufacturing is extremely simple, and as a result, manufacturing cost can be reduced.

The upper inner plate 15C and the lower inner plate 15D, which are the other portions of the inner box 15, are integrally molded products formed by a mold. However, compared to the conventional structure in which the entire inner box 15 is integrally molded by a large mold, the manufacturing is easy and the manufacturing cost can be reduced. Thereby contributing to the reduction in cost of the refrigerator 1.

In this case, at least one of the left inner panel 15A, the right inner panel 15B, the upper inner panel 15C, the lower inner panel 15D, and the depth inner panel 15E may be formed of a sheet member.

In this embodiment, the inner box 15 is configured by combining the left inner plate portion 15A, the right inner plate portion 15B, the upper inner plate portion 15C, the lower inner plate portion 15D, and the depth inner plate portion 15E. In this case, the left inner plate 15A, the depth inner plate 15E, and the right inner plate 15B, which are two adjacent inner plates, are each formed by dividing a different sheet member. Further, sheet member connecting plates 25, 25 as sheet member connecting members for connecting the adjacent inner plate portions are provided between the left inner plate portion 15A and the depth inner plate portion 15E and between the right inner plate portion 15B and the depth inner plate portion 15E, respectively, between the adjacent inner plate portions.

Thus, the left inner plate portion 15A and the depth inner plate portion 15E, and the right inner plate portion 15B and the depth inner plate portion 15E, which are formed of a single member, can be easily coupled to each other using the separate member coupling plates 25, and assembly can be simplified.

In the first embodiment, the heat insulating box body 2 is configured by connecting a left heat insulating wall 9, a right heat insulating wall 10, an upper heat insulating wall 11, a lower heat insulating wall 12, and a depth heat insulating wall 13, which are unit heat insulating walls divided into a plurality of parts. In the conventional structure, the heat insulation box body is formed by assembling the outer box and the inner box which are not divided, so the size is large and the assembling operation scale is complicated. However, in the present embodiment, since the heat insulating box 2 can be configured by assembling the heat insulating walls 9 to 13 having the vacuum heat insulating panels, the assembly is simple, the assembly work is not troublesome, and the work is easy.

Further, according to the first embodiment, the front end portion of the inner box 15 made of the sheet member and the front end portion of the outer box 14 are connected by the front end connecting member 21. Therefore, even in the case 15 made of a sheet member, the outer box 14 and the distal end connecting member 21, which is a separate member, can be easily assembled, i.e., joined.

Further, in the first embodiment, the inner box 15 has an L-shaped portion 17 on the upper heat insulating wall 11, and a drain receiving portion 18 on the lower heat insulating wall 12. The L-shaped portion 17 is formed integrally with the upper inner panel portion 15C, and the drain receiving portion 18 is formed integrally with the lower inner panel portion 15D. Thus, even if the L-shaped portion 17 and/or the drain receiving portion 18 have complicated shapes, they can be easily formed by integrally forming the inner plate portions 15C, 15D.

In the first embodiment, the inner box 15 has the fixing member 26 which is a first protruding portion protruding inward of the box and is formed of a member different from the sheet members Sa and Sb. The fixing member 26 is, for example, directly adhered to the left unit panel 16A at a stage before assembling the left insulating wall 9. Holes 15u are formed in the left and right inner panels 15A and 15B made of the sheet member Sa and the deep inner panel 15E made of the sheet member Sb. The fixing member 26 is disposed through the hole portion 15 u.

By inserting the fastener 26 into the hole 15u in this way, the position of the fastener 26 can be determined with respect to the inner box 15, that is, the sheet members Sa, Sb. The partition wall supports 35 and 36 and the rear cover attachment 37 are also configured to be attached to the fixing member 26. Therefore, the partition wall supports 35 and 36 and the rear cover attachment 37 are also positioned in the same manner as the fixing member 26.

The fasteners 26 may be inserted into and bonded to the holes 15u from the back side of the sheet members Sa and Sb in a stage before the left heat insulating wall 9 is assembled. Thus, the holder 26 and the sheet member can be handled in an integrated state. Therefore, when assembling the unit heat insulating wall, the unit plate can be bonded to the integrated member of the fixture 26 and the sheet members Sa and Sb, and the assembling workability is improved.

As shown in fig. 13, the mount 26 mounting surface of the unit board 16A may be recessed. Thus, the fixing member 26 can be attached without bending the sheet member Sa.

Even when the unit plate 16A bulges, the inner plate 15A is formed of the sheet member Sa, and therefore, the inner plate 15A may be slightly deformed without being broken.

In addition, the fixing member 26, the shelf support 30, the rail mounting members 33, 34, and the partition wall supports 35, 36 may be commonly used in heat-insulated boxes of different kinds of refrigerators.

In the first embodiment, the fixing members 26 are directly bonded to the left unit plate 16A, the right unit plate 16B, and the depth unit plate 16E. Therefore, the unit plates 16A, 16B, and 16E can be easily positioned with respect to the inner plate portions 15A, 15B, and 15E by inserting the fasteners 26 into the holes 15u of the corresponding inner plate portions 15A, 15B, and 15E, respectively. In this case, since the anchor 26 is made of ABS resin having good adhesiveness, the adhesive strength between the anchor 26 and each of the unit plates 16A, 16B, and 16E can be improved.

The partition wall supports 35 and 36 and the back cover attachment 37 are also configured to be attached to the fixing member 26. Therefore, the partition wall supports 35 and 36 and the rear cover attachment 37 also contribute to the alignment of the inner plate portions and the unit plates.

The fixing member 26 may be bonded to each of the unit plates 16A, 16B, and 16E via a different member.

In the first embodiment, the fixing member 26 has the edge portion 26a larger than the hole portion 15 u. The edge-shaped portions 26a are sandwiched between the sheet members Sa, Sb and the unit plates corresponding to both. Thus, the fastener 26 is prevented from falling out of the hole 15u by the edge-shaped portion 26 a. Further, the edge-shaped portion 26a can be bonded to the corresponding inner plate portion, and can contribute to an improvement in the strength of the corresponding inner plate portion. The edge-shaped portion 26a is thin. Therefore, the fixing member 26 can be inserted between the inner plate portion and the unit plate by bending the edge-shaped portion 26a to pass through the hole portion 15u from the inside of the case.

In the first embodiment, the inner case 15 has the shelf support portion 30b as the second protruding portion. The shelf support 30 having the shelf support portion 30B is formed of a member different from the sheet member Sa forming the left and right inner plate portions 15A, 15B, and projects toward the inside of the case. The sheet member Sa is formed with a screw insertion hole 31. The shelf support 30 is fixed to the surface of the sheet member Sa, i.e., the surface inside the case, from the back side of the sheet member Sa, i.e., the side opposite to the inside of the case, through countersunk screws 32 inserted into the case from the screw insertion holes 31.

In this way, the shelf support 30 can be mounted with respect to the sheet member Sa by the countersunk screws 32 as the connection members. In this case, a rivet may be used as the connecting member. The rivets penetrate the sheet member Sa and the shelf support 30, for example, and rivet both ends of the rivets to fix the shelf support 30 to the sheet member Sa.

In the first embodiment, the peripheral edge portions 31a of the screw insertion holes 31 are spaced apart from the left and right unit plates 16A and 16B, which are vacuum insulation panels. That is, the head 32a of the countersunk head screw 32 does not protrude from the peripheral edge 31a of the screw insertion hole 31 toward the left and right unit plates 16A and 16B, respectively.

Thus, the screw head 32a does not protrude toward the rear surface of the inner plates 15A, 15B, i.e., the unit plates 16A, 16B. Therefore, the screw head 32a can be prevented from contacting each unit plate 16A, 16B. Therefore, the bag 20 of each unit plate 16A, 16B can be prevented from being damaged by the contact of the screw head 32 a. Further, the adhesion of the left unit plate 16A and the left inner plate portion 15A and the adhesion of the right unit plate 16B and the right inner plate portion 15B are not hindered by the screw head portion 32 a.

Further, the shelf support 30 is formed by spot facing 30d in which the opening peripheral edge portion of the screw hole portion 30c is dish-shaped. When the countersunk screws 32 are screwed into the threaded holes 30c in this way, the peripheral edge portions 31a of the screw insertion holes 31 of the sheet member Sa are deformed toward the countersinks 30d and are separated from the left and right unit plates 16A and 16B. Thus, there is no need to intentionally form a recess for accommodating the screw head 32a in the sheet member Sa.

Also, the rail mounts 33, 34 are also of the same mounting configuration as the shelf supports 30. Accordingly, the same effect as that of the shelf support 30 is also exerted on the rail mounts 33, 34. The shelf supports 30 and the rail mounts 33 and 34, which are not shown, provided on the right heat insulating wall 10 also have the same effects as those of the shelf supports 30.

(second embodiment)

Fig. 19 to 27 show a second embodiment. In the second embodiment, the left and right heat insulating walls 9-2 and 10-2 are different from the first embodiment in configuration. Hereinafter, the difference will be described by taking the left side heat insulating wall 9-2 as an example. The right insulating wall 10-2 is similarly configured except that it is bilaterally symmetric to the left insulating wall 9-2.

In the left heat insulating wall 9-2, the left inner plate portion 15A-2, which is a part of the inner box 15, has shelf support portions 40a, 40b, and 40c, rail attachment portions 41a and 41b, and partition wall support portions 42a and 42b as third projecting portions. The left inner plate portion 15A-2 is formed of an integrally molded product lc in which the shelf support portions 40a, 40b, and 40c, the rail attachment portions 41a and 41b, and the partition wall support portions 42a and 42b are integrally formed. The integrally molded product lc is formed by molding with a mold, for example, injection molding or vacuum molding. Shelf support portions 40a, 40b, and 40c, rail mounting portions 41a and 41b, and partition wall support portions 42a and 42b protrude toward the inside of the box, respectively.

As shown in FIG. 21, the left inner plate portion 15A-2 has a sheet member connecting portion 25-2 at the deep-depth end. The sheet member connecting portion 25-2 is formed integrally with the left inner panel portion 15A-2. The sheet member connecting portion 25-2 functions as a sheet member connecting member for connecting the left inner panel portion 15A-2 and the depth inner panel portion 15E. As shown in fig. 22, the sheet member connection portion 25-2 is connected to the depth side heat insulating wall 13 by a fastener 26 attached to the depth inner plate portion 15E.

As shown in fig. 21, the shelf support portions 40a, 40b, and 40c and the rail mounting portions 41a and 41b have different lengths in the front-rear direction. In this case, the rail mounting portions 41a, 41b are longer in the front-rear direction than the shelf support portions 40a, 40b, 40 c. On the other hand, the shelf support portions 40a, 40b, and 40c and the rail mounting portions 41a and 41b have the same vertical cross-sectional shapes. Thus, the rail mounting portions 41a, 41b are configured substantially the same as the shelf support portions 40a, 40b, 40c except for the specific shape. Therefore, the shelf support portion 40a will be described below, and the description of the shelf support portions 40b and 40c and the rail mounting portions 41a and 41b will be omitted.

As shown in fig. 22 to 25, the shelf support portion 40a is formed integrally with the left inner panel portion 15A-2 as an integrally molded product lc. The shelf support portion 40a protrudes from the inside surface of the left inner panel portion 15A-2 in the direction of the inside of the box. As shown in fig. 23, the shelf support portion 40a has a screw boss 43 formed on a part of the surface opposite to the inside of the case. The screw boss 43 has a screw hole 43 a.

A reinforcing plate 44 made of, for example, a metal plate is attached as a reinforcing member to an inner surface portion of the shelf support portion 40a on the side opposite to the inside of the tank. The reinforcement plate 44 is formed in a shape along the inner surface of the shelf support 40a on the side opposite to the inside of the case. The reinforcing plate 44 has a convex fitting portion 44 a. The convex fitting portion 44a is formed with a screw insertion hole portion 44 b. The reinforcing plate 44 is inserted with the screw 45 through the screw insertion hole portion 44b so that the convex portion fitting portion 44a abuts against the inner surface portion of the shelf support portion 40 a. The reinforcing plate 44 is attached to the shelf support portion 40a, i.e., the left inner plate portion 15A-2, by screwing the screw 45 into the screw hole portion 43 a. Thus, the reinforcement plate 44 reinforces the shelf support portion 40 a.

The partition wall supporting portions 42a, 42b correspond to the partition wall supports 35, 36 of the first embodiment. As shown in fig. 26 and 27, a reinforcing plate 46 made of, for example, a metal plate is provided as a reinforcing member on the inner surface of the partition wall supporting portions 42a, 42 b. The reinforcing plate 46 is mounted by screws 47. Thus, the partition wall supporting portions 42a, 42b are reinforced by the reinforcing plate 46.

Further, the screw fastening of the reinforcing plates 44, 46 may be performed as needed. For example, the reinforcing plates 44 and 46 may be bonded instead of screws. In this case, the reinforcing plates 44 and 46 may be positioned between the left unit plate 16A and the left inner plate portion 15A-2, and may be configured to reinforce the shelf support portions 40a, 40b, and 40c, the rail attachment portions 41a and 41b, and the partition wall support portions 42a and 42b, which are protruding portions.

According to the second embodiment, the shelf support portions 40a, 40b, and 40c, the rail attachment portions 41a and 41b, and the partition wall support portions 42a and 42b, which are the third protruding portions, are integrally configured as the integrally molded product lc. Therefore, it is not necessary to constitute the third projecting portion by a different member. The shelf support portions 40a, 40b, and 40c, the rail attachment portions 41a and 41b, and the partition wall support portions 42a and 42b, which are third protruding portions, are reinforced by reinforcing plates 44 and 46. Therefore, even when a material having a lower strength is used for the third projecting portion according to the present embodiment than in the case where the projecting portion is formed of a separate member, sufficient strength can be obtained. Therefore, according to the present embodiment, as a material of the integrally molded product lc, an olefin resin such as a polypropylene material, which has lower strength than the ABS resin but is low cost, can be used.

(third embodiment)

Fig. 28 and 29 show a third embodiment. The third embodiment is different from the first and second embodiments in the configurations of the left and right heat insulating walls 9-3 and 10-3. Next, the difference will be explained. In this case, the left side heat insulating wall 9-3 and the right side heat insulating wall 10-3 have the same configuration except for the left-right symmetrical shape. Therefore, the left insulating wall 9-3 will be explained.

As shown in fig. 29, the left insulating wall 9-3 has a unit plate 16A and a left inner plate 15A. The left inner plate portion 15A is divided into an upper plate portion 15Aa and a lower plate portion 15 Ab. The upper plate portion 15Aa and the lower plate portion 15Ab are vertically adjacent to each other. The upper plate portion 15Aa is formed as an integrally molded product ld by, for example, injection molding or vacuum molding. The upper plate portion 15Aa integrally includes shelf support portions 40a, 40b, and 40c and a sheet member connecting portion 25-2 as a third protruding portion, as in the second embodiment. The joining portion 25-2 for sheet member is located on the refrigerating compartment 57 side. As shown in fig. 28, the lower plate portion 15Ab side and the depth inner plate portion 15E are connected by a sheet member connecting plate 25-3. The sheet member connecting plate 25-3 has the upper plate portion 15Aa and the lower plate portion 15Ab as separate members. Sheet member connecting plate 25-3 is located on the side of vegetable compartment 58, small freezing compartment 59, ice making compartment 60, and freezing compartment 61.

The lower plate portion 15Ab is formed of a flat plate-like sheet member Sc. The lower plate portion 15Ab has the anchor 26 and the partition wall supports 35 and 36 as first protruding portions that are separate members from the sheet member Sc, and has the rail mounts 33 and 34 as second protruding portions, as in the first embodiment. The protruding portions are attached in the same manner as in the first embodiment. Thus, upper plate portion 15Aa is positioned in refrigerating compartment 57 and constitutes an inner surface of refrigerating compartment 57.

According to the third embodiment, the inner surface of the refrigerating chamber 57 having the swing doors 3 and 4 is formed by the upper plate portion 15Aa as the integrally molded product ld. Therefore, the appearance of the inner surface of the refrigerating chamber 57 is good. That is, the inner surface of the refrigerating chamber 57 is easily visually recognized by the user when the swing doors 3 and 4 are opened. According to the present embodiment, the inner surface of the refrigerating chamber 57 is formed of an integrally molded product ld integrally including the shelf support portions 40a, 40b, and 40 c. Therefore, the shelf support portions 40a, 40b, and 40c smoothly protrude from the upper plate portion 15Aa, and thus the appearance is good. Further, according to this configuration, since the gaps between the shelf support portions 40a, 40b, and 40c and the upper plate portion 15Aa are not formed, foreign matter or the like does not enter the gaps. Therefore, the cleaning performance of the upper plate portion 15Aa is improved, and the impression of hygiene is also improved.

(fourth embodiment)

Fig. 30 and 31 show a fourth embodiment. In the fourth embodiment, the shelf support 30 is different from the first embodiment in that it has the fin portion 30 e. In this case, the flap portion 30e functions as a covering portion. The fin portion 30e is located at a peripheral edge portion of the main body portion 30a of the shelf support 30 and is provided integrally with the main body portion 30 a. As shown in fig. 31, the fin portion 30e is configured to be elastically deformable while being inclined toward the left inner plate portion 15A side of the inner case 15, which is the inner surface side.

The fin portion 30e is in close contact with the left inner plate portion 15A in the inner surface of the inner case 15 in the mounted state of the shelf support 30. The gap between the inner surface of the inner case 15 and the shelf support 30 is hidden by the flap portion 30 e. That is, when the countersunk screws 32 are screwed into the screw holes 30c of the shelf support 30, the peripheral edge portions 31a of the screw insertion holes 31 of the left inner plate portion 15A are deformed, and wrinkles may be generated in the screw insertion holes 31. Further, a gap may be formed between the left inner plate portion 15A and the shelf support 30 due to the wrinkles. According to the fourth embodiment, the gap can be hidden by the flap portion 30 e.

(fifth embodiment)

Fig. 32 to 34 show a fifth embodiment. In the fifth embodiment, the following points are different from those of the first embodiment. That is, in the first embodiment, the inner box 15 is divided into the left outer panel 14A, the lower outer panel 14D, and the right outer panel 14B, which constitute a part of the inner box. In contrast, in the present embodiment, the left and lower outer plate portions 14A, 14D and the right outer plate portion 14B are constituted by the continuous outer plate portion 14Z. Further, numeral 16D denotes a unit plate provided between the lower outer plate portion 14D and the lower inner plate portion 15D.

As shown in the fifth embodiment, the outer box 14 may not be divided into all the plate portions.

In the fourth embodiment shown in fig. 30 and 31, the shelf support 30 is provided with the fin portion 30e so that the gap between the inner surface of the inner box 15 and the shelf support 30 is hidden by the fin portion 30e, but the gap may be made inconspicuous by making the shelf support 30 itself transparent.

The inner plate portions of the respective heat insulating walls 9 to 13 as the unit heat insulating walls may be all made of sheet members, or one inner plate portion may be made of sheet members. In addition, at least two unit heat insulation walls are required. For example, the left heat insulating wall 9 may be formed separately, and the other heat insulating walls 10 to 13 may be formed integrally. That is, the heat insulating walls 10 to 13 may be formed by connecting and integrating outer plate portions, inner plate portions, or unit plates.

The unit heat insulating wall may be configured such that a unit plate is provided between the inner plate portion and the outer plate portion, one surface of the unit plate is bonded to the inner plate portion, and the other surface of the unit plate is bonded to the outer plate portion. The unit heat insulating wall may be formed by bonding the inner plate portion and one surface of the unit plate and interposing a heat insulating material such as urethane foam between the other surface of the unit plate and the outer plate portion.

Further, the outer box and the vacuum insulation panel may be connected by dividing only the inner box into a plurality of inner plate portions without dividing the inner box.

As described above, the refrigerator according to the present embodiment includes the heat insulating box including the outer box, the inner box, and the vacuum heat insulating panel disposed between the outer box and the inner box, and at least a part of the inner box is formed of the flat plate-like sheet member. Thus, a large die is not needed, and the manufacturing is easy and the cost is low.

Although several embodiments of the present invention have been described, the embodiments are merely examples and are not intended to limit the scope of the invention. These novel embodiments may be embodied in other various forms, and various omissions, substitutions, and changes may 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 range equivalent to the aspect described in the claimed range.

Claims (6)

1. A refrigerator is characterized in that a refrigerator body is provided with a refrigerator door,

the heat insulation box body is provided with: an outer box; an inner box disposed inside the outer box; and a vacuum insulation panel disposed between the outer case and the inner case,

at least a part of the inner box is formed by a flat plate-shaped sheet member,

the refrigerator further comprises a connecting member which passes through the connecting member insertion hole part formed on the sheet member from the side opposite to the inner side of the refrigerator,

the inner box has a protruding portion protruding toward the inside of the box,

the portion of the inner box having the protruding portion is a member different from the sheet member and is formed of an integrally molded product integrally formed with the protruding portion, and is reinforced by a reinforcing member provided inside the protruding portion and along the protruding portion.

2. The refrigerator according to claim 1,

the peripheral portion of the connecting member insertion hole is spaced apart from the vacuum insulation panel, and the end portion of the connecting member does not protrude from the peripheral portion of the connecting member insertion hole toward the vacuum insulation panel side.

3. The refrigerator according to claim 1,

the protruding portion has a covering portion that covers a gap between the protruding portion and the inner case.

4. The refrigerator according to claim 1,

the protrusion is transparent.

5. A refrigerator is characterized in that a refrigerator body is provided with a refrigerator door,

the heat insulation box body is provided with: an outer box; an inner box disposed inside the outer box; and a vacuum insulation panel disposed between the outer case and the inner case,

at least a part of the inner box is formed by a flat plate-shaped sheet member,

the inner box has a protruding portion protruding toward the inside of the box,

the portion of the inner box having the protruding portion is a member different from the sheet member and is formed of an integrally molded product integrally formed with the protruding portion, and is reinforced by a reinforcing member provided inside the protruding portion and along the protruding portion.

6. The refrigerator according to claim 5,

the protrusion is fixed to the vacuum insulation panel.

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