CN113348334A

CN113348334A - Refrigerator with a door

Info

Publication number: CN113348334A
Application number: CN201980088127.4A
Authority: CN
Inventors: 铃木悠平; 冈部诚
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2019-01-29
Filing date: 2019-07-24
Publication date: 2021-09-03
Anticipated expiration: 2039-07-24
Also published as: WO2020157825A1; WO2020158012A1; CN113348334B; JP6964810B2; AU2019427660B2; JPWO2020158012A1; TW202028648A; TWI727629B; MY196152A; AU2019427660A1; SG11202106162YA

Abstract

The invention provides a refrigerator, which is provided with a heat insulation partition part for dividing the interior of an inner box into storage rooms with different temperature ranges, wherein the heat insulation partition part is provided with: a second vacuum heat insulating member disposed along a surface defining the inside of the inner box; and a covering part for covering the second vacuum heat insulating material, the covering part including: a first covering part covering one surface side of the second vacuum heat insulation member; and a second covering portion which is joined to the first covering portion and covers the other surface side of the second vacuum heat insulator, wherein: a convex portion abutting against the second vacuum heat insulating material; a concave portion recessed toward a side opposite to the second vacuum heat insulator side; and a flat portion protruding toward the second vacuum heat insulator, wherein the flat portion is provided with an adhesive member for bonding the first cover portion or the second cover portion to the second vacuum heat insulator. This can increase the rigidity of the covering portion to suppress deformation, and can stably fix the vacuum heat insulator while improving the workability of fitting the vacuum heat insulator.

Description

Refrigerator with a door

Technical Field

The present invention relates to a refrigerator having a heat insulating partition structure having a vacuum heat insulator.

Background

In recent years, from the viewpoint of energy saving, such a refrigerator has a structure in which a vacuum heat insulator is provided between an outer box and an inner box constituting a heat insulating box body, between an inner plate and an outer plate of a door for opening and closing a front opening of the heat insulating box body, or the like, instead of conventional hard urethane foam, to improve heat insulating performance. Generally, an outer case of a heat-insulating box body and an outer panel of a door of a refrigerator are made of steel plates, and an inner case and an inner panel of the door are made of resin.

In addition, in a refrigerator having a plurality of compartments having different temperature stages, in order to secure the temperature of each compartment, it is necessary to divide the compartments by a heat insulating partition. Here, in order to obtain high heat insulation performance, it is important to use a vacuum heat insulator having heat insulation performance 6 times or more as high as that of conventional rigid polyurethane foam as a heat insulation separator.

The vacuum heat insulator is formed by bonding 2 sheets of gas-barrier outer skins in a state of facing each other, and vacuum-filling a core material such as glass wool or glass fiber into a space formed inside the outer skins. The skin material is a member in which an aluminum foil or the like is brought into close contact with a base material such as a nylon film. The fin portions bonding the outer peripheries of the outer skin members are folded back to be flush with the vacuum heat insulator, and fixed by an adhesive tape or an adhesive.

In addition, in the refrigerator, from the viewpoint of space saving or an increase in the capacity of the internal volume, a reduction in the thickness of the heat insulating box, which is a space formed between the outer box and the inner box of the heat insulating box, is also desired. For example, patent document 1 describes a refrigerator in which a vacuum heat insulator provided between an outer box and an inner box is directly attached to the outer box and the inner box, thereby reducing the thickness of a heat insulating box body and increasing the internal volume.

However, the conventional heat insulation box is manufactured according to the technical idea that rigid polyurethane foam mainly plays a heat insulation function, and a vacuum heat insulation material assists the heat insulation function of the rigid polyurethane foam. Here, in the conventional heat insulation box, the space between the inner box and the outer box is filled with rigid polyurethane foam at a predetermined density to secure the box strength. However, when the thickness of the wall surface is reduced by reducing the thickness of the polyurethane, the thickness of the polyurethane becomes thin, and the density of the polyurethane increases to lower the heat insulating performance, so that it is difficult to ensure the required strength of the cabinet while satisfying the heat insulating performance.

That is, in the conventional refrigerator having the vacuum heat insulator, the heat insulating performance of the wall surface and the heat insulating box and the strength of the heat insulating box and the wall surface are ensured by the rigid polyurethane foam. Therefore, if the thickness of the rigid polyurethane foam is reduced in order to reduce the thickness of the heat insulating box, insufficient heat insulating performance or insufficient strength of the heat insulating box occurs, and it is difficult to reduce the thickness.

Therefore, as a measure against the strength of the heat insulating box body provided with the vacuum heat insulator, a method of wrapping the vacuum heat insulator with a frame body made of a resin covering member is used. In this case, the periphery of the vacuum heat insulator is covered with a plurality of covering members, and the vacuum heat insulator is sandwiched by the frame body constituted by these covering members, whereby the vacuum heat insulator is fixed inside the frame body. In this case, the covering member constituting the housing is formed of a plastic material into a desired shape by, for example, vacuum forming or pressure forming.

Patent document 1: japanese laid-open patent publication No. 11-159950

However, in the conventional method using a frame, since the surface of the covering member sandwiching the vacuum heat insulator is flat, deformation such as warping is likely to occur on the flat surface of the covering member, which may hinder the fitting workability and fixing of the vacuum heat insulator.

Disclosure of Invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a refrigerator having a heat insulating partition structure capable of improving the rigidity of a covering member to suppress deformation, improving the workability of fitting a vacuum heat insulator, and stably fixing the vacuum heat insulator.

The refrigerator according to the present invention comprises: an outer case forming an appearance; an inner box disposed inside the outer box to form a storage; a first vacuum heat insulating material disposed in a space formed between the outer box and the inner box; a foaming heat insulating material filled in the space; and a heat-insulating partition portion provided in the inner box and dividing the inside of the inner box into storage compartments having different temperature ranges, wherein the heat-insulating partition portion includes: a second vacuum heat insulating material arranged along a surface defining the inside of the inner box; and a covering portion that covers the second vacuum heat insulating material, the covering portion including: a first covering part covering one surface side of the second vacuum heat insulating material; and a second cover portion which is joined to the first cover portion and covers the other surface side of the second vacuum heat insulator, wherein a cover surface of at least one of the first cover portion and the second cover portion, which faces the second vacuum heat insulator, is provided with: a convex portion abutting against the second vacuum heat insulator, a concave portion recessed toward a side opposite to the second vacuum heat insulator, and a flat portion protruding toward the second vacuum heat insulator, wherein an adhesive member for bonding the first covering portion or the second covering portion to the second vacuum heat insulator is provided on the flat portion.

According to the refrigerator of the present invention, the first cover portion and the second cover portion constituting the heat insulating partition portion are provided with the uneven shape, so that the surface rigidity of the first cover portion and the second cover portion itself can be increased, and the deformation can be suppressed. Therefore, the second vacuum heat insulating material can be stably fixed while improving the workability of fitting the second vacuum heat insulating material.

Drawings

Fig. 1 is a perspective view showing a refrigerator according to embodiment 1 of the present invention.

Fig. 2 is a sectional view showing the inside of the refrigerator of fig. 1 as viewed from the right side.

Fig. 3 is a perspective view illustrating an insulated partition in the refrigerator of fig. 1.

Fig. 4 is a perspective view showing the heat insulating partition of fig. 3 exploded.

Fig. 5 is a cross-sectional view showing a Z-Z section in the heat insulating partition of fig. 3.

Fig. 6 is an enlarged view showing a main part of the heat insulating partition of fig. 5.

Fig. 7 is a perspective view showing a refrigerator according to embodiment 2 of the present invention.

Fig. 8 is a sectional view showing the inside of the refrigerator of fig. 7 viewed from the right side.

Fig. 9 is a perspective view illustrating an insulated partition in the refrigerator of fig. 7.

Fig. 10 is a perspective view showing the heat insulating partition of fig. 9 exploded.

Fig. 11 is a cross-sectional view showing a Y-Y section in the heat insulating partition of fig. 9.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The form of the member shown throughout the specification is merely an example, and is not limited to these descriptions. That is, the present invention can be modified as appropriate within a range not departing from the gist or idea of the invention that can be understood from the technical solution and the entire specification. In addition, a refrigerator with such a modification is also included in the technical idea of the present invention. In the drawings, the same reference numerals are used to designate the same or corresponding structures, and the description is common throughout the specification. In the following description, the upper side in the drawings is referred to as the "upper side" and the lower side is referred to as the "lower side". For easy understanding, terms indicating directions (for example, "right", "left", "front", and "rear") and the like are used as appropriate, but these terms are merely terms for explanation and do not limit the invention according to the present application. The vertical direction when the refrigerator is viewed from the front side is defined as a height direction, and the horizontal direction is defined as a width direction. In the drawings, the relationship between the sizes of the respective components may be different from the actual relationship.

Embodiment 1.

< Structure of refrigerator 1 >

A refrigerator 1 according to embodiment 1 of the present invention will be described with reference to fig. 1 and 2. Fig. 1 is a perspective view showing a refrigerator 1 according to embodiment 1 of the present invention. Fig. 2 is a sectional view showing the inside of the refrigerator 1 of fig. 1 as viewed from the right side. As shown in fig. 1 and 2, the main body of the refrigerator 1 is composed of an outer box 2 and an inner box 9, the outer box 2 is composed of a metal such as an iron plate to form an external appearance, and the inner box 9 is composed of a synthetic resin such as ABS (acrylonitrile butadiene styrene), and is disposed inside the outer box 2 to form a storage. An internal space is formed as a space portion between the outer casing 2 and the inner casing 9. First

vacuum heat insulators

40, 41, and 42 are disposed in the inner spaces of the outer box 2 and the inner box 9 on the top, back, and bottom surfaces of the refrigerator 1, respectively, and a rigid polyurethane foam heat insulator 11 as a foam heat insulator is filled in the surrounding space.

The refrigerator 1 includes: a first heat-insulating partition 29, a second heat-insulating partition 30, a third heat-insulating partition 31, and a fourth heat-insulating partition 32 provided in the inner box 9 and dividing the inside of the inner box 9 into storage compartments having different temperature ranges. In the refrigerator 1, the space in the inner box 9 is divided into a refrigerating compartment 10, an ice making compartment and switching compartment 12, a vegetable compartment 13, and a freezing compartment 14, which are a plurality of storage compartments, by the first heat insulating partition 29, the second heat insulating partition 30, the third heat insulating partition 31, and the fourth heat insulating partition 32. The refrigerator 1 includes a plurality of

doors

3, 4, 5, 6, 7, and 8 for opening and closing a front opening of the inner box 9 in correspondence with the storage compartments.

In refrigerator 1, refrigerating room 10 is formed at the uppermost part, and ice making room and switching room 12, vegetable room 13, and storage room having the lowermost part as freezing room 14 are formed in this order from top to bottom. Specifically, refrigerating compartment 10 is partitioned into the upper part of first heat-insulating partition 29, and is maintained at a refrigerating temperature (+ about 5 ℃). The ice making compartment and the switching compartment 12 are divided into a space formed by the lower part of the first heat insulating partition 29, the upper part of the second heat insulating partition 30, and the front part of the fourth heat insulating partition 32, and are maintained at a freezing temperature (-20 ℃) in the ice making compartment and a supercooling temperature (-7 to 0 ℃) in the switching compartment 12.

The vegetable compartment 13 is divided into a space defined by a lower portion of the second heat-insulating partition 30, an upper portion of the third heat-insulating partition 31, and a front portion of the fourth heat-insulating partition 32, and is maintained at a refrigerating temperature (+ about 5 ℃). Freezing chamber 14 is divided into the lower part of third heat-insulating partition 31 and maintained at a freezing temperature (-20 ℃ or so).

The front surface of each storage room (refrigerating room 10, ice-making room and switching room 12, vegetable room 13, and freezing room 14) is open, and

doors

3, 4, 5, 6, 7, and 8 cover the opening portion so as to be openable and closable. The refrigerating chamber doors 3 and 4 are doors that are formed by two left and right halves and cover the refrigerating chamber 10. The door for opening and closing the refrigerating chamber 10 may be a single-door type. The ice making chamber door 5 and the switching chamber door 6 are extraction type doors that cover the ice making chamber and the switching chamber 12, respectively. The vegetable room door 7 is a drawer type door covering the vegetable room 13. In addition, the freezing chamber door 8 is a draw-out type door that covers the freezing chamber 14. Here, the drawer type door is drawn out together with the storage box for storing the stored articles. First

vacuum heat insulators

46, 47, and 48 are disposed inside the refrigerating compartment doors 3 and 4, the vegetable compartment door 7, and the freezing compartment door 8, respectively, and a rigid urethane foam heat insulator 11 is filled in a surrounding space.

The refrigerator 1 of embodiment 1 has a refrigerant circuit (refrigeration circuit) for cooling the inside of the storage chamber. The refrigerant circuit is configured by connecting a compressor 20, a cooler 21, a condenser (not shown), a capillary tube (not shown), and the like by pipes. As shown in fig. 2, the inner box 9 has a machine chamber 15 formed on the back side of the freezing chamber 14, and the machine chamber 15 is formed in a three-dimensional shape standing in a step shape. A compressor 20 and a condenser (not shown) are disposed inside the machine room 15. Further, a cooler 21 is disposed on the rear surface side of vegetable compartment 13, and this cooler 21 is partitioned by a fourth heat insulating partition 32 and cools each storage compartment of refrigerating compartment 10, ice making compartment and switching compartment 12, vegetable compartment 13, and freezing compartment 14 to a predetermined temperature range. The compressor 20 sucks a refrigerant, compresses the refrigerant into a high-temperature and high-pressure state, and discharges the refrigerant. The condenser condenses and liquefies the refrigerant by dissipating heat therefrom. Further, a capillary tube (capillary tube) serving as an expansion device decompresses and expands the refrigerant passing therethrough. The cooler 21 exchanges heat between the refrigerant and air to evaporate and gasify the refrigerant. The air cooled by the cooler 21 is sent to each storage room by a blower (not shown). The amount of cold air (air amount) to be supplied to each storage compartment is controlled by an electrically-operated damper (not shown) provided in an air passage between the cooler 21 and each storage compartment.

Among them, isobutane (R600a) is preferably used as the refrigerant circulating in the refrigeration cycle. Although other refrigerants can be used, isobutane has advantages such as no ozone layer destruction and a low warming potential when discarded.

The first

vacuum heat insulators

40 and 42 disposed on the bottom and top surfaces of the inner box 9 of the refrigerator 1 are formed in an L shape. The refrigerator 1 has an electronic control board (not shown) as a self-heating member for operation control disposed on the back surface of the top plate. Therefore, it is preferable to dispose the first vacuum heat insulator 40 having a higher heat insulating effect than urethane between the inner box 9 and the electronic control board. In addition, since the refrigerator 1 has a heat pipe (not shown) disposed on the top plate, the first vacuum heat insulator 40 is preferably disposed between the heat pipe and the inner box 9. Accordingly, the first vacuum heat insulator 40 disposed on the top surface of the refrigerator 1 is formed by bending the plate-shaped first vacuum heat insulator 40 into an L-shape, and is adhered to the outer box 2 by applying a styrene rubber hot melt adhesive, and covers the top plate of the refrigerator 1 and the electronic control board. That is, the first vacuum heat insulator 40 has an L-shape, so that the manufacturing cost can be reduced. The L-shaped first vacuum heat insulator 40 is not limited to a shape in which the bent portion is bent, and may be formed in a bent shape, for example.

Further, the refrigerator 1 self-heats when the compressor 20 and the condenser disposed in the machine room 15 are operated. Therefore, it is necessary to prevent heat from entering the floor of the refrigerator 1, and for the same reason as in the case of the electronic control board, it is preferable to dispose the first vacuum heat insulator 42 between the inner box 9 and the machine room 15. In view of this, the first vacuum heat insulator 42 disposed on the floor surface of the refrigerator 1 is formed by bending the plate-like first vacuum heat insulator 42 into an L-shape so as to cover the floor surface of the refrigerator 1 and the machine chamber 15, and is adhered to the inner box 9 by applying a styrene rubber hot melt adhesive. The L-shaped first vacuum heat insulator 42 is not limited to a shape in which the bent portion is bent, and may be formed in a bent shape, for example. The first vacuum heat insulator 41 disposed on the rear surface of the refrigerator 1 is adhered to the rear metal member 22 by being coated with a styrene rubber hot melt adhesive. The means for bonding the first

vacuum heat insulators

40, 41, and 42 is not limited to a styrene rubber hot melt adhesive, and a double-sided tape or the like may be used.

< Structure of the second heat-insulating partition 30 >

Here, in the case of the refrigerator 1 according to embodiment 1, the second heat insulating partition 30 that partitions the vegetable compartment 13 is provided with the second vacuum heat insulator 49. In addition, the refrigerator 1 according to embodiment 1 is not limited to the second heat insulating partition 30, and the third heat insulating partition 31 and the fourth heat insulating partition 32 may be provided with the second vacuum

heat insulating materials

50 and 51 by the same configuration as the second heat insulating partition 30. Hereinafter, an insulated partition structure of the refrigerator 1 according to embodiment 1 will be described with reference to fig. 3 to 6, as typified by the second insulated partition 30. Hereinafter, the second heat insulating partition 30 is simply referred to as a heat insulating partition 30 for convenience.

Fig. 3 is a perspective view showing the heat insulating partition 30 in the refrigerator 1 of fig. 1. Fig. 4 is an exploded perspective view of the heat insulating partition 30 of fig. 3. Fig. 5 is a cross-sectional view showing a Z-Z section in the heat insulating partition 30 of fig. 3. Fig. 6 is an enlarged view showing a main part of the heat insulating partition 30 of fig. 5. The main portion of the heat insulating partition 30 shown in fig. 6 is a portion enclosed by a circle a in fig. 5.

As shown in fig. 3 and 4, the heat insulating partition 30 includes: a second vacuum heat insulator 49 disposed along a surface defining the inside of the inner box 9; and a covering portion that covers the second vacuum heat insulator 49. The covered portion includes: a first covering portion 62 covering one surface side of the second vacuum heat insulator 49; and a second cover 63 which is joined to the first cover 62 and covers the other surface side of the second vacuum heat insulator 49. The first cover 62 and the second cover 63 are formed in a box shape with one surface opened. A claw 62a for fixing the first cover 62 and the second cover 63 is provided on the outer peripheral side of the first cover 62. A partition fixing portion 62b is provided on an outer surface of the first cover 62 opposite to the cover surface, and the partition fixing portion 62b is used to fix a partition portion (not shown) that partitions the ice making compartment and the switching compartment 12 (see fig. 2). Further, an attachment portion 62c is provided on the outer periphery of the first cover portion 62 on the door 5 or 6 side, and the attachment portion 62c is used to fix the heat insulating partition portion 30 to the inner box 9 by a screw.

Specifically, as shown in fig. 4, a convex portion 65 that abuts against the second vacuum heat insulator 49 is formed on the surface of the first cover portion 62 and the second cover portion 63 that faces the second vacuum heat insulator 49. Further, a concave portion 66 that is recessed toward the side opposite to the second vacuum heat insulator 49 side is formed in the covering surface of the first covering portion 62 and the second covering portion 63 that faces the second vacuum heat insulator 49. In embodiment 1, the convex portion 65 has a triangular shape, and a plurality of convex portions are arranged on the coating surface. The shape of the convex portion 65 is not limited to a triangle, and may be a polygonal shape. At this time, the convex portion 65 is formed in a relief pattern (embossed shape). In addition, the recess 66 is arranged to intersect the covered surface. As a result, a recess corresponding to the convex portion 65 is formed on the outer surface of the first cover portion 62 and the second cover portion 63 on the opposite side of the cover surface. That is, recesses corresponding to the convex portions 65 are formed in the outer surface portions of the first cover 62 contacting the bottom surface of the ice making compartment and the bottom surface of the switching compartment 12 and the outer surface portions of the second cover 63 contacting the top surface of the vegetable compartment 13. In this case, the outer surfaces of the first cover portion 62 and the second cover portion 63 are formed with X-shaped irregularities formed by recesses corresponding to the convex portions 65.

In addition, a flat portion 63b facing the second vacuum heat insulator 49 is formed on the covering surface of the second covering portion 63 in addition to the convex portion 65 and the concave portion 66. The flat portion 63b is provided with an adhesive member 64 for bonding the second cover portion 63 and the second vacuum heat insulator 49.

Soft tapes

60 and 61 are provided on the outer peripheral side surface of the second vacuum heat insulator 49, and the

soft tapes

60 and 61 are joined to the inner side surface of the first cover 62 fitted into the second vacuum heat insulator 49.

The convex portion 65, the concave portion 66, and the flat portion 63b may be formed on the surface of at least one of the first covering portion or the

second covering portions

62 and 63 facing the second vacuum heat insulator. In particular, the convex portions 65 and the concave portions 66 are provided on both the covering surfaces of the first covering portion 62 and the second covering portion 63, so that the rigidity of each of the first covering portion 62 and the second covering portion 63 can be improved. Therefore, the rigidity of the entire covering portion formed by combining these members can be remarkably improved. In addition, from the viewpoint of ease of handling, it is generally preferable to use a double-sided tape as the adhesive member 64, but in the case where there is a facility for coating a styrene rubber-based hot melt adhesive, these may be used.

A hole 63a is provided in an outer peripheral side portion of the second cover portion 63, and the hole 63a is engaged with the claw 62a of the first cover portion 62 when the second cover portion 63 is combined with the first cover portion 62. The second cover portion 63 may be provided with claws 62a on its outer peripheral side portion, and the first cover portion 62 may be provided with holes 63a on its outer peripheral side portion for coupling with the claws 62 a. In addition, although the case where the hole 63a is formed by a through hole as shown in fig. 4 has been described, it may be a recess or the like. Claws 63d for fixing the heat insulating partition 30 to the inner box 9 are provided on both side surfaces of the second covering portion 63. The second cover 63 has a mounting portion 63c for fixing the insulating partition 30 to the inner box 9 with screws on the outer periphery of the door 5 or 6. The uneven shapes of the first covering portion 62 and the second covering portion 63 shown in fig. 3 and 4 are formed in an X-shape, but the uneven shapes may be formed in a lattice shape, for example. For example, the convex portions 65 are formed in a square shape, and the plurality of convex portions 65 are arranged at equal intervals on the aforementioned facing surface, so that the uneven shape is formed in a lattice shape in which the concave portions 66 are arranged in an orthogonal state.

As shown in fig. 5, the upper surface and the outer periphery of the first cover portion 62 have a convex shape with respect to the outer surface due to the X-shaped uneven shape, the partition fixing portion 62b, and the like. Therefore, the inner surface of the first cover 62 ensures a certain gap with respect to the surface of the second vacuum heat insulator 49. The other part of the inner surface of the first cover 62 has a concave shape that contacts the surface of the second vacuum heat insulator 49. Similarly, the lower surface and the outer periphery of the second coating portion 63 have a convex shape with respect to the outer surface due to the X-shaped uneven shape, the flat portion 63b, and the like. Therefore, the inner surface of the second cover 63 ensures a certain gap with respect to the surface of the second vacuum heat insulator 49. The other part of the inner surface of the second cover 63 has a concave shape that contacts the surface of the second vacuum heat insulator 49. In fig. 5, the X-shaped portion is formed in a convex shape and the periphery thereof is formed in a triangular concave shape, but the X-shaped portion may be formed in a concave shape and the periphery thereof is formed in a triangular convex shape.

As shown in fig. 6, ribs (rib)63e are provided on the outer surface of the second cover portion 63 on the opposite side of the cover surface over the entire surface of the X-shaped uneven shape including the outer surface.

In the refrigerator 1 according to embodiment 1, the vegetable compartment 13 and the ice making compartment and switching compartment 12 are partitioned by the heat insulating partition 30. The installation site of the heat insulating partition 30 according to the present invention can be applied to the heat insulating partition including the second vacuum heat insulating material between all the chambers in the inner box 9.

In addition, in embodiment 1, as the structure of the covering portion of the heat insulating partition portion 30, a structure in which the second vacuum heat insulator 49 is fitted into the first covering portion 62 and the second covering portion 63 is integrated with the first covering portion 62 as a cover is shown, but this is an example. As the structure of the covering portion of the heat insulating partition 30, a structure may be adopted in which the second vacuum heat insulating material 49 is embedded in the second covering portion 63 and the first covering portion 62 is integrated with the second covering portion 63 as a cover.

That is, the heat insulating partition 30 in the refrigerator 1 according to embodiment 1 may have a structure in which at least all of the six surfaces around the second vacuum heat insulator 49 are covered with 2 or more covering members having an uneven shape on the opposing surfaces.

The first cover 62 and the second cover 63 constituting the heat insulating partition 30 are made of, for example, a hard plastic such as PP (polypropylene) or ABS, and are formed to have a thickness of about 1.5 mm. As the material of the first cover 62 and the second cover 63, if the temperature at the time of production is about 70 ℃, an inexpensive material such as PP or ABS can be used. When the temperature during production exceeds 100 ℃ due to heat generation or the like caused by foaming of the polyurethane foam, a material such as heat-resistant ABS, PC (polycarbonate), or PA (polyamide) can be used. Since the first cover 62 and the second cover 63 are resin molded articles, the resin injection port is preferably provided on an inconspicuous inner surface in view of design.

< Assembly step of second insulating partition 30 >

Here, the procedure of assembling the heat insulating partition 30 in embodiment 1 will be described. First, the

soft tapes

60 and 61 are bonded to the outer peripheral surface of the second vacuum heat insulator 49, and the adhesive member 64 is bonded to the lower surface of the second vacuum heat insulator 49 facing the flat portion 63b of the second cover portion 63. Next, the second vacuum heat insulator 49 is inserted into the first cover 62. Next, the second cover portion 63 is covered from the opening side of the first cover portion 62 as a cover, and the hole 63a provided in the outer peripheral side portion of the second cover portion 63 is coupled to the claw 62a provided in the outer peripheral side portion of the first cover portion 62. Then, the second vacuum heat insulator 49 is joined and fixed to the flat portion 63b via the adhesive member 64. The procedure described here is merely an example, and the adhesive member 64 may be bonded to the flat portion 63b and then bonded to the lower surface of the second vacuum heat insulator 49.

< Effect of embodiment 1 >

As described above, in the refrigerator 1 according to embodiment 1, the first cover portion 62 and the second cover portion 63 constituting the heat insulating partition portion 30 are provided with the uneven shape, so that the surface rigidity of the first cover portion 62 and the second cover portion 63 itself is improved. Therefore, according to the refrigerator 1 of embodiment 1, the deformation of the first cover portion 62 and the second cover portion 63 can be suppressed. Therefore, it is possible to prevent deterioration of workability when the second vacuum heat insulator 49 is fitted into the first cover portion 62 or when the second cover portion 63 and the first cover portion 62 are combined. Further, since the heat insulating partition 30 can be prevented from being deformed, the second vacuum heat insulator 49 can be prevented from floating from the convex portion 65 of the heat insulating partition 30. Therefore, the heat insulating partition 30 can reliably support and sandwich the second vacuum heat insulator 49 by the convex portion 65, the flat portion 63b, or the like.

Further, the recess 66 is preferably arranged to intersect the covering surfaces of the first covering portion 62 and the second covering portion 63. This can improve the rigidity of each of the first cover portion 62 and the second cover portion 63.

The convex portion 65 is preferably a polygonal shape such as a triangle or a quadrangle, and a plurality of convex portions are arranged on the coating surfaces of the first coating portion 62 and the second coating portion 63. Thus, the concave portion 66 formed between the adjacent convex portions 65 and convex portions 65 is arranged to intersect the coating surfaces of the first coating portion 62 and the second coating portion 63. Therefore, the rigidity of each of the first cover portion 62 and the second cover portion 63 can be improved.

In the refrigerator 1 according to embodiment 1, the first cover portion 62 and the second cover portion 63 constituting the heat insulating partition portion 30 are provided with the X-shaped uneven shape, whereby the recess 66 which ensures a constant gap with respect to the surface of the second vacuum heat insulator 49 can be provided. In this case, by providing the resin injection port on the surface of the recess 66 in the inner surfaces of the first cover portion 62 and the second cover portion 63, the surface of the second vacuum heat insulator 49 can be prevented from coming into contact with the projection of the resin injection port without using an auxiliary member such as foamed styrene. When the projection of the resin inlet is generated, the concave portion 66 is preferably recessed by about 3mm toward the side opposite to the second vacuum heat insulator 49 side with respect to the convex portion 65 so that the surface of the second vacuum heat insulator 49 does not contact the projection of the resin inlet. Therefore, the surface of the second vacuum heat insulator 49 is prevented from being damaged by contact with the projection of the resin inlet, and the outer skin of the second vacuum heat insulator 49 is prevented from being broken and thus is prevented from being defective.

The thickness of the uneven shape of the first cover portion 62 and the second cover portion 63 is set to about 1.5mm, and the uneven shape is provided in a relief pattern on the outer side as well as the inner side facing the second vacuum heat insulator 49. In this case, the internal volume of each chamber can be secured according to the amount of the concave space outside the first cover portion 62 and the second cover portion 63, compared to when the outside of the first cover portion 62 and the second cover portion 63 is flat.

Further, by attaching the

soft tapes

60 and 61 to the outer peripheral side surface of the second vacuum heat insulator 49, it is possible to prevent a problem from occurring when the second vacuum heat insulator 49 is fitted into the first cover 62 or when the first cover 62 and the second cover 63 are combined. That is, the skin material near the outer periphery of the second vacuum heat insulator 49 can be prevented from contacting the ribs provided near the inner side surfaces of the first cover 62 and the second cover 63 and breaking the ribs, and the skin material can be prevented from being defective.

In order to facilitate assembly, it is preferable to provide a predetermined gap between the side surface of the second vacuum heat insulator 49 and the inner side surface of the first cover 62. By providing the

soft tapes

60 and 61 between the side surface of the second vacuum heat insulator 49 and the inner side surface of the first cover 62, the gap of the gap amount can be filled and the second vacuum heat insulator 49 can be prevented from shifting or moving. Therefore, the risk of damage to the outer skin of the second vacuum heat insulator 49 can be suppressed.

By providing the flat portion 63b for attaching the adhesive member 64 to the inner lower surface of the second cover portion 63, the second vacuum heat insulator 49 and the second cover portion 63 can be reliably fixed by the adhesive member 64. Therefore, when the heat insulating partition 30 is assembled to the inner box 9, the second vacuum heat insulator 49 is prevented from being displaced or moved in the heat insulating partition 30, and the risk of damage to the outer skin of the second vacuum heat insulator 49 can be suppressed. The flat portion 63b is preferably lower in height from the concave portion 66 by the thickness of the adhesive member 64 than the convex portion 65 so that the convex portion 65 of the second cover portion 63 does not float from the surface of the second vacuum heat insulator 49.

As a method of combining the first cover 62 and the second cover 63, a claw 62a provided on the outer periphery of the first cover 62 and a hole 63a provided on the outer periphery of the second cover 63 are used. Thus, the 2 components can be easily combined without using auxiliary components such as screws or tapes, and workability can be improved. In addition, even if a trouble occurs in the second vacuum heat insulator 49, the first cover 62 and the second cover 63 can be easily separated from each other from the united state by releasing the engagement between the claws 62a and the holes 63 a.

Further, by providing the claws 63d on both side surfaces of the second covered portion 63, the heat insulating partition portion 30 can be fixed to the inner box 9 without using auxiliary members such as screws, and workability in attaching the heat insulating partition portion 30 to the inner box 9 can be improved. In addition, even if a trouble occurs in the heat insulating partition portion 30, the heat insulating partition portion 30 can be easily removed from the inner box 9.

Further, by providing the ribs 63e over the entire surface including the irregularities of the outer surface of the second cover portion 63, the surface area of the outer surface of the second cover portion 63 can be increased. Therefore, water attached to the outer surface of the second cover 63 can be easily evaporated, and dew can be prevented from attaching to the outer surface of the second cover 63 contacting the top surface of the vegetable compartment 13.

Embodiment 2.

Next, a refrigerator 1 according to embodiment 2 of the present invention will be described with reference to fig. 7 and 8. Fig. 7 is a perspective view showing the refrigerator 1 according to embodiment 2 of the present invention. Fig. 8 is a sectional view showing the inside of the refrigerator 1 of fig. 7 as viewed from the right side.

Here, in the refrigerator 1 of embodiment 1 described above, the refrigerator compartment as the storage compartment is configured as a refrigerating compartment 10, an ice making compartment and switching compartment 12, a vegetable compartment 13, and a freezing compartment 14 from above. The refrigerator 1 having the structure in which the second

vacuum heat insulators

49, 50, and 51 are respectively installed between the vegetable compartment 13 and the ice making compartment and the switching compartment 12, between the vegetable compartment 13 and the freezing compartment 14, and between the vegetable compartment 13 and the cooler 21 will be described.

In contrast, in embodiment 2, the refrigerator 1 in which the arrangement of the vegetable compartment 13 and the freezer compartment 14 is changed for the purpose of improving efficiency from the viewpoint of energy saving and thermal efficiency, as compared with the refrigerator 1 of embodiment 1, will be described. Note that, in the refrigerator 1 according to embodiment 2, the same reference numerals are given to portions common to the refrigerator 1 according to embodiment 1, and detailed description thereof is omitted.

As shown in fig. 7 and 8, the refrigerator 1 according to embodiment 2 includes a first heat-insulating partition 29, a second heat-insulating partition 33, a third heat-insulating partition 31, and a fourth heat-insulating partition 32 that are provided in the inner box 9 and divide the interior of the inner box 9 into storage compartments having different temperature ranges. The refrigerator 1 divides the space inside the inner box 9 into a plurality of storage compartments, i.e., a refrigerating compartment 10, an ice making compartment and switching compartment 12, a vegetable compartment 13, and a freezing compartment 14, by the first heat-insulating partition 29, the second heat-insulating partition 33, the third heat-insulating partition 31, and the fourth heat-insulating partition 32. The refrigerator 1 includes a plurality of

doors

In the refrigerator 1, a refrigerating chamber 10 is formed in the uppermost part, and an ice making chamber and a switching chamber 12, a freezing chamber 14, and a storage chamber having the lowermost part as a vegetable chamber 13 are formed in this order from top to bottom. Specifically, the refrigerating compartment 10 is partitioned into the upper part of the first heat insulating partition 29, and is maintained at a refrigerating temperature (+5 ℃ C.). The ice making compartment and the switching compartment 12 are divided into a space formed by the lower part of the first heat insulating partition 29, the upper part of the second heat insulating partition 33, and the front part of the fourth heat insulating partition 32, and are maintained at a freezing temperature (-20 ℃) in the ice making compartment and a supercooling temperature (-7 to 0 ℃) in the switching compartment 12.

The freezing chamber 14 is divided into spaces formed by the lower portion of the second heat-insulating partition 33, the upper portion of the third heat-insulating partition 31, and the front portion of the fourth heat-insulating partition 32, and is maintained at a freezing temperature (-20 ℃ or so). The vegetable compartment 13 is partitioned into a lower portion of the third heat-insulating partition 31 and maintained at a refrigerating temperature (+ about 5 ℃).

< Structure of second insulating partition 33 >

Here, in the case of the refrigerator 1 according to embodiment 2, the second heat insulating partition 33 that partitions the freezing chamber 14 includes the second vacuum heat insulator 49. In addition, the refrigerator 1 according to embodiment 2 is not limited to the second heat insulating partition 33, and the third heat insulating partition 31 and the fourth heat insulating partition 32 may be provided with the second

vacuum heat insulators

50 and 51 by the same configuration as the second heat insulating partition 33. Hereinafter, the heat insulating partition structure of the refrigerator 1 according to embodiment 2 will be described with reference to fig. 9 to 11, as typified by the second heat insulating partition portion 33. Hereinafter, the second heat insulating partition 33 is simply referred to as a heat insulating partition 33 for convenience.

Fig. 9 is a perspective view showing the heat insulating partition 33 in the refrigerator 1 of fig. 7. Fig. 10 is a perspective view illustrating the heat insulating partition 33 of fig. 9 in an exploded view. Fig. 11 is a cross-sectional view showing a Y-Y section in the heat insulating partition 33 of fig. 9.

As shown in fig. 9 to 11 in which the same reference numerals are given to corresponding portions of fig. 3 to 5, the heat insulating partition 33 includes: a second vacuum heat insulator 49 disposed along a surface defining the inside of the inner box 9; and a covering portion that covers the second vacuum heat insulator 49. That is, the covering portion is configured to include, as in the case of the covering portion of embodiment 1 described above: a first covering portion 62 covering one surface side of the second vacuum heat insulator 49; and a second cover 63 which is joined to the first cover 62 and covers the other surface side of the second vacuum heat insulator 49. Therefore, heat-insulating partition 33 is configured in the same manner as heat-insulating partition 30 except for a point at which vegetable compartment 13 is partitioned by heat-insulating partition 30 and freezing compartment 14 and a point at which rib 63e is not provided on the outer surface of second coating portion 63.

< Assembly step of second insulating partition 33 >

Here, the procedure of assembling the heat insulating partition 33 in embodiment 2 will be described. First, the

soft tapes

60 and 61 are bonded to the outer peripheral surface of the second vacuum heat insulator 49, and the adhesive member 64 is bonded to the lower surface of the second vacuum heat insulator 49 facing the flat portion 63b of the second cover portion 63. Next, the second vacuum heat insulator 49 is inserted into the first cover 62. Next, the second cover portion 63 is covered from the opening side of the first cover portion 62 as a cover, and a hole 63a provided in the outer peripheral side portion of the second cover portion 63 and a claw 62a provided in the outer peripheral side portion of the first cover portion 62 are coupled. Then, the second vacuum heat insulator 49 is joined and fixed to the flat portion 63b via the adhesive member 64. The procedure described here is merely an example, and the adhesive member 64 may be bonded to the flat portion 63b and then bonded to the lower surface of the second vacuum heat insulator 49.

< Effect of embodiment 2 >

As described above, in the refrigerator 1 according to embodiment 2, the first cover portion 62 and the second cover portion 63 constituting the heat insulating partition portion 33 are provided with the uneven shape, so that the surface rigidity of the first cover portion 62 and the second cover portion 63 itself is improved. Therefore, according to the refrigerator 1 of embodiment 2, the deformation of the first cover 62 and the second cover 63 can be suppressed. Therefore, it is possible to prevent deterioration of workability when the second vacuum heat insulator 49 is fitted into the first cover portion 62 or when the second cover portion 63 and the first cover portion 62 are combined. Further, since the heat insulating partition 33 can be prevented from being deformed, the second vacuum heat insulator 49 can be prevented from floating from the convex portion 65 of the heat insulating partition 33. Therefore, the heat insulating partition 33 can reliably support and sandwich the second vacuum heat insulator 49 by the convex portion 65, the flat portion 63b, or the like.

In the refrigerator 1 according to embodiment 2, the refrigerating compartment 10 is formed in the uppermost part, and the ice making compartment and switching compartment 12, the freezing compartment 14, and the storage compartment having the lowermost part as the vegetable compartment 13 are formed in this order from top to bottom. That is, in refrigerator 1 according to embodiment 2, vegetable compartment 13 is not interposed between ice making compartment and switching compartment 12 and freezing compartment 14, but the lowermost part is vegetable compartment 13, and ice making compartment and switching compartment 12 are vertically adjacent to freezing compartment 14. As a result, the efficiency can be improved from the viewpoint of energy saving and thermal efficiency as compared with the refrigerator 1 of embodiment 1.

In the refrigerator 1 according to embodiment 2, the first cover portion 62 and the second cover portion 63 constituting the heat insulating partition portion 33 are provided with the X-shaped uneven shape, whereby the recess 66 which ensures a constant gap with respect to the surface of the second vacuum heat insulator 49 can be provided. In this case, by providing the resin injection port on the surface of the recess 66 in the inner surfaces of the first cover portion 62 and the second cover portion 63, the surface of the second vacuum heat insulator 49 can be prevented from coming into contact with the projection of the resin injection port without using an auxiliary member such as foamed styrene. When the projection of the resin inlet is generated, the concave portion 66 is preferably recessed by about 3mm toward the side opposite to the second vacuum heat insulator 49 side with respect to the convex portion 65 so that the surface of the second vacuum heat insulator 49 does not contact the projection of the resin inlet. Therefore, the surface of the second vacuum heat insulator 49 is prevented from being damaged by contact with the projection of the resin inlet, and the outer skin of the second vacuum heat insulator 49 is prevented from being broken and thus is prevented from being defective.

The thickness of the uneven shape of the first cover portion 62 and the second cover portion 63 is set to about 1.5mm, and the uneven shape is provided in a relief pattern on the outer side as well as the inner side facing the second vacuum heat insulator 49. In this case, the internal volume of each chamber can be secured according to the amount of the concave space outside the first cover portion 62 and the second cover portion 63, compared to when the outside of the first cover portion 62 and the second cover portion 63 is made flat.

Further, by attaching the

soft tapes

60 and 61 between the side surface of the second vacuum heat insulator 49 and the inner side surface of the first cover 62, the gap of the gap amount can be filled, and the second vacuum heat insulator 49 can be prevented from shifting or moving. Therefore, the risk of damage to the outer skin of the second vacuum heat insulator 49 can be suppressed.

By providing the flat portion 63b for attaching the adhesive member 64 to the inner lower surface of the second cover portion 63, the second vacuum heat insulator 49 and the second cover portion 63 can be reliably fixed by the adhesive member 64. Therefore, when the heat insulating partition 33 is assembled to the inner box 9, the second vacuum heat insulator 49 is prevented from being displaced or moved in the heat insulating partition 33, and the risk of damage to the outer skin of the second vacuum heat insulator 49 can be suppressed. Preferably, the flat portion 63b has a height from the concave portion 66 that is lower than the convex portion 65 by the thickness of the adhesive member 64 so that the convex portion 65 of the second cover portion 63 does not float from the surface of the second vacuum heat insulator 49.

As a method of combining the first cover 62 and the second cover 63, a claw 62a provided on the outer periphery of the first cover 62 and a hole 63a provided on the outer periphery of the second cover 63 are used. This makes it possible to easily combine 2 members without using auxiliary members such as screws or tapes, thereby improving workability. In addition, even if a trouble occurs in the second vacuum heat insulator 49, the first cover 62 and the second cover 63 can be easily separated from each other from the united state by releasing the engagement between the claws 62a and the holes 63 a.

Further, by providing the claws 63d on both side surfaces of the second covered portion 63, the heat insulating partition 33 can be fixed to the inner box 9 without using auxiliary members such as screws, and workability in attaching the heat insulating partition 33 to the inner box 9 can be improved. In addition, even if a trouble occurs in the heat insulating partition 33, the heat insulating partition 33 can be easily removed from the inner box 9.

The present invention is not limited to the description of

embodiments

1 and 2. For example, the order or configuration of the arrangement of refrigerating room 10, ice making room and switching room 12, vegetable room 13, and freezing room 14 in refrigerator 1 is not limited to those in

embodiments

1 and 2 described above, and various modifications can be made.

Description of reference numerals:

1 … refrigerator; 2 … outer case; 3. 4, 5, 6, 7, 8 … doors; 9 … inner box; 10 … a cold storage compartment; 11 … rigid polyurethane foam insulation; 12 … switching chamber; 13 … vegetable room; 14 … freezing chamber; 15 … machine room; 20 … compressor; 21 … cooler; 22 … back metal parts; 29 … a first insulating partition; 30. 33 … a second thermally insulating partition; 31 … a third thermally insulated partition; 32 … fourth insulating partition; 40. 41, 42, 46, 47, 48 … a first vacuum insulation; 49. 50, 51 … a second vacuum insulation; 60. 61 … soft tape; 62 … a first cover; 62a … claws; 62b … separating the fastening portions; 62c … mounting portion; 63 … a second cover part; 63a … hole; 63b … flat portion; 63c … mounting part; 63d … claws; 63e … ribs; 64 … adhesive member; 65 … protrusions; 66 … recess.

Claims

1. A refrigerator is provided with:

an outer case forming an appearance;

an inner box disposed inside the outer box to form a storage;

a first vacuum heat insulator disposed in a space formed between the outer box and the inner box;

a foaming heat insulating material filled in the space; and

a heat insulation partition part arranged in the inner box and dividing the inner box into storage chambers with different temperature sections,

the refrigerator is characterized in that,

the heat-insulating partition portion includes:

a second vacuum heat insulating material disposed along a surface defining the inside of the inner box; and

a covering part for covering the second vacuum heat insulating material,

the covered portion includes:

a first covering portion covering one surface side of the second vacuum heat insulating material; and

a second covering portion which is combined with the first covering portion and covers the other surface side of the second vacuum heat insulator,

a covered surface facing the second vacuum heat insulator in at least one of the first covered portion and the second covered portion is provided with:

a convex portion abutting against the second vacuum heat insulator;

a concave portion recessed toward a side opposite to the second vacuum heat insulator side; and

a flat portion protruding toward the second vacuum insulation member,

an adhesive member for bonding the first cover portion or the second cover portion to the second vacuum heat insulator is provided on the flat portion.

2. The refrigerator according to claim 1,

the recess is configured to intersect the covered surface.

3. The refrigerator according to claim 1 or 2,

the convex portion has a polygonal shape, and a plurality of convex portions are arranged on the coating surface.

4. The refrigerator according to any one of claims 1 to 3,

ribs are provided on the entire outer surface of the second cover portion on the side opposite to the cover surface.

5. The refrigerator according to any one of claims 1 to 4,

a partition part for dividing the storage chamber divided by the heat-insulating partition part in the inner box into storage chambers having different temperature ranges,

the heat insulating partition portion is provided with a partition fixing portion for fixing the partition portion on an outer surface of the first cover portion opposite to the cover surface.