WO2020158012A1

WO2020158012A1 - Refrigerator

Info

Publication number: WO2020158012A1
Application number: PCT/JP2019/028982
Authority: WO
Inventors: 悠平鈴木; 誠岡部
Original assignee: 三菱電機株式会社
Priority date: 2019-01-29
Filing date: 2019-07-24
Publication date: 2020-08-06
Also published as: TWI727629B; AU2019427660A1; WO2020157825A1; CN113348334A; SG11202106162YA; CN113348334B; JP6964810B2; TW202028648A; AU2019427660B2; JPWO2020158012A1; MY196152A

Abstract

A refrigerator including an insulating partition that divides an inner box into storage compartments with different temperature zones, wherein: the insulating partition includes a second vacuum insulation material that is disposed along a surface defining the interior of the inner box, and a cover that covers the second vacuum insulation material; the cover is configured to include a first cover that covers one surface side of the second vacuum insulation material, and a second cover that combines with the first cover and covers another surface side of the second vacuum insulation material; a projecting portion that is in contact with the second vacuum insulation material, a recessed portion that recesses toward the side opposite from the second vacuum insulation material, and a flat portion that projects toward the second vacuum insulation material are formed on at least one cover surface of the first and second covers facing the second vacuum insulation material; and the flat portion is provided with an adhesive member that bonds to the second vacuum insulation material and the first or second cover. It is thus possible to improve the rigidity of the cover and suppress deformation, and also possible to stably secure the vacuum insulation material while improving the ease of fitting the vacuum insulation material.

Description

refrigerator

The present invention relates to a refrigerator provided with a heat insulating partition structure having a vacuum heat insulating material.

In recent years, this type of refrigerator has been used in order to save energy, such as between an outer box and an inner box forming a heat insulating box, and between an inner plate and an outer plate of a door that opens and closes a front opening of the heat insulating box. In addition, a vacuum heat insulating material is provided in place of the conventional rigid urethane foam to improve heat insulating performance. Generally, in a refrigerator, the outer box of the heat insulating box and the outer plate of the door are made of steel plates, and the inner box and the inner plate of the door are made of resin.

In addition, in a refrigerator that has multiple rooms with different temperature zones, it is necessary to separate these rooms with a heat insulating partition in order to maintain the temperature of each room. Here, in order to obtain high heat insulating properties, it is important to use, as a heat insulating partition, a vacuum heat insulating material having a heat insulating performance that is, for example, 6 times or more as high as that of a conventional rigid urethane foam.

Such a vacuum heat insulating material is, for example, peripherally bonded with two outer skin materials having gas barrier properties facing each other, and a core material such as glass wool or fiberglass fiber is evacuated to a space formed inside the outer skin material. While being enclosed, it is formed. The outer skin material is a material such as an aluminum foil adhered to a base material such as a nylon film. The fin portion in which the outer peripheries of the outer skin materials are adhered is folded back in the same plane as the vacuum heat insulating material, and is fixed with a tape or an adhesive.

Furthermore, in the refrigerator, from the viewpoint of space saving or increasing the internal volume, it is required to reduce the space formed between the outer and inner boxes of the heat insulating box, that is, the wall thickness of the heat insulating box. ing. For example, in Patent Document 1, a vacuum heat insulating material provided between an outer box and an inner box is directly attached to the outer box and the inner box, thereby reducing the wall thickness of the heat insulating box body and increasing the inner volume. The refrigerator which aims at expansion of is described.

However, the conventional heat insulating box body was manufactured by the technical idea that the hard urethane foam mainly plays a heat insulating function and the vacuum heat insulating material assists the heat insulating function of the hard urethane foam. Here, in the conventional heat insulating box, the box strength is ensured by filling the space between the inner box and the outer box with the rigid urethane foam at a predetermined density. However, when trying to reduce the thickness of the wall by reducing the thickness of the urethane, the thickness of the urethane becomes thin, the density of the urethane increases, and the heat insulation performance decreases, so that the heat insulation performance is not satisfied. However, it was difficult to secure the required box strength.

In other words, in a refrigerator equipped with a conventional vacuum heat insulating material, the heat insulating performance of the wall surface and the heat insulating box body and the strength of the heat insulating box body and the wall surface are secured by the rigid urethane foam. Therefore, if the thickness of the rigid urethane foam is reduced in order to reduce the wall thickness of the heat insulation box, the heat insulation performance or strength of the heat insulation box becomes insufficient, and it is difficult to reduce the wall thickness.

Therefore, as a measure against the strength of the heat insulating box body equipped with the vacuum heat insulating material, a method of surrounding the vacuum heat insulating material with a frame body made of resin-made coated parts was used. In this case, the circumference of the vacuum heat insulating material is covered with a plurality of coating components, and the vacuum heat insulating material is sandwiched between the frame bodies made of these coating components to fix the vacuum heat insulating material inside the frame body. At this time, the covered component forming the frame is formed into a desired shape by using a technique such as vacuum forming or pressure forming of a plastic material.

JP-A-11-159950

However, in the conventional method using the frame body, since the surface of the coated component that sandwiches the vacuum heat insulating material has a flat shape, deformation such as warpage is likely to occur on the flat surface of the coated component, and the workability of fitting the vacuum heat insulating material is improved. In addition, there was a problem that the fixing was hindered.

The present invention has been made in order to solve the above-described problems, and can improve the rigidity of the coated component to suppress deformation, improve the workability of fitting the vacuum heat insulating material, and stabilize the vacuum heat insulating material. An object of the present invention is to provide a refrigerator having a heat insulation partition structure that can be fixed.

The refrigerator according to the present invention is arranged in an outer box forming an outer appearance, an inner box arranged inside the outer box and forming a storage, and a space formed between the outer box and the inner box. A first vacuum heat insulating material, a foam heat insulating material filled in the space portion, and a heat insulating partition portion provided in the inner box and partitioning the inside of the inner box into storage chambers having different temperature zones; In the refrigerator, the heat insulation partition section, a second vacuum heat insulating material arranged along a surface partitioning the inside of the inner box, and a covering section for covering the second vacuum heat insulating material, The first coating portion that covers one surface side of the second vacuum heat insulating material and the first coating portion, and the other surface side of the second vacuum heat insulating material. A second coating part for coating is included, and the second vacuum heat insulating material is provided on the coating surface facing the second vacuum heat insulating material in at least one of the first or second coating parts. A flat portion protruding toward the second vacuum heat insulating material, and a flat portion protruding toward the second vacuum heat insulating material are formed. Is provided with an adhesive member for joining the first or second coating portion and the second vacuum heat insulating material.

According to the refrigerator of the present invention, by providing the first and second covering portions forming the heat insulating partition with the uneven shape, the surface rigidity of the first and second covering portions themselves is improved and the deformation is suppressed. can do. Therefore, it is possible to stably fix the second vacuum heat insulating material while improving the workability of fitting the second vacuum heat insulating material.

It is a perspective view which shows the refrigerator which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the inside of the refrigerator of FIG. 1 seeing from the right side. It is a perspective view which shows the heat insulation partition part in the refrigerator of FIG. It is a perspective view which decomposes|disassembles and shows the heat insulation partition part of FIG. It is sectional drawing which shows the ZZ cross section in the heat insulation partition part of FIG. It is an enlarged view which shows the principal part in the heat insulation partition part of FIG. It is a perspective view which shows the refrigerator which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the inside of the refrigerator of FIG. 7 seeing from the right side. It is a perspective view which shows the heat insulation partition part in the refrigerator of FIG. It is a perspective view which decomposes|disassembles and shows the heat insulation partition part of FIG. It is sectional drawing which shows the YY cross section in the heat insulation partition part of FIG.

An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the forms of the constituent elements shown in the entire specification are merely examples, and the present invention is not limited to these descriptions. That is, the present invention can be appropriately modified without departing from the spirit or idea of the invention which can be read from the claims and the entire specification. Further, a refrigerator accompanied by such changes is also included in the technical idea of the present invention. Further, in each of the drawings, the components denoted by the same reference numerals are the same or corresponding components, which are common to all the texts of the specification. Further, in the following description, the upper side in the drawings will be referred to as “upper side” and the lower side will be referred to as “lower side”. Further, for ease of understanding, terms indicating directions (for example, “right”, “left”, “front”, and “rear”) are used as appropriate, but these are for the purpose of explanation. The term does not limit the invention according to the present application. Further, when viewed from the front side of the refrigerator, the vertical direction is the height direction, and the horizontal direction is the width direction. Further, in the drawings, the relationship of the size of each component may be different from the actual one.

Embodiment 1.
<Structure of refrigerator 1>
A refrigerator 1 according to Embodiment 1 of the present invention will be described with reference to FIGS. 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 cross-sectional view showing the inside of the refrigerator 1 of FIG. 1 as viewed from the right side. As shown in FIGS. 1 and 2, the refrigerator 1 includes an outer box 2 made of a metal such as an iron plate and having an appearance, and a synthetic resin such as ABS (acrylonitrile-butadiene-styrene plastic). The main body is composed of the inner box 9 which is arranged and forms a storage. An inner space as a space portion is formed between the outer box 2 and the inner box 9. First vacuum

heat insulating materials

40, 41 and 42, etc. are arranged in the inner space of the outer box 2 and the inner box 9 on the top, back and bottom of the refrigerator 1, etc. A hard urethane foam heat insulating material 11, which is a heat insulating material, is filled.

The refrigerator 1 is provided in the inner box 9, and divides the inner box 9 into storage chambers having different temperature zones, a first heat insulating partition 29, a second heat insulating partition 30, and a third heat insulating partition. 31 and a fourth heat insulating partition 32. The refrigerator 1 includes the first heat insulation partition 29, the second heat insulation partition 30, the third heat insulation partition 31, and the fourth heat insulation partition 32 so that the space in the inner box 9 is divided into a plurality of storage chambers. It is divided into a certain refrigerating room 10, an ice making and switching room 12, a vegetable room 13, and a freezing room 14. The refrigerator 1 also includes a plurality of

doors

3, 4, 5, 6, 7 and 8 for opening and closing the front opening of the inner box 9 corresponding to these storage chambers.

In the refrigerator 1, a refrigerating compartment 10 is formed at the top, and an ice making compartment and a switching compartment 12, a vegetable compartment 13, and a storage compartment having a freezing compartment 14 at the bottom are formed in order from the top. Specifically, the refrigerating compartment 10 is divided into the upper part of the first heat insulating partition 29 and is maintained at the refrigerating temperature (about +5° C.). The ice making chamber and the switching chamber 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 the freezing temperature in the ice making room. (About -20°C), and the switching chamber 12 is maintained at the supercooling temperature (-7 to 0°C).

The vegetable compartment 13 is divided into a space formed by the lower part of the second heat insulating partition 30, the upper part of the third heat insulating partition 31, and the front of the fourth heat insulating partition 32, and is kept at a refrigerating temperature (about +5°C). Has been maintained. The freezer compartment 14 is sectioned below the third heat insulating partition 31, and is maintained at a freezing temperature (about -20°C).

Each storage room (refrigerating room 10, ice making room and switching room 12, vegetable room 13 and freezing room 14) is open on the front side, and

doors

3, 4, 5, 6, 7 and 8 can be opened and closed at the opening. Covered. The

refrigerating compartment doors

3 and 4 are two doors of a double-door type and cover the refrigerating compartment 10. The structure of the door that opens and closes the refrigerator compartment 10 may be a single-opening type single door. The ice making chamber door 5 and the switching chamber door 6 are drawer-type doors that cover the ice making chamber and the switching chamber 12, respectively. The vegetable compartment door 7 is a drawer type door that covers the vegetable compartment 13. The freezer compartment door 8 is a drawer-type door that covers the freezer compartment 14. Here, the pull-out door is pulled out together with the storage case that stores the stored items. Inside the

refrigerator compartment doors

3 and 4, the vegetable compartment door 7, and the freezer compartment door 8, first vacuum

heat insulating materials

46, 47, and 48 are arranged, respectively, and hard urethane is provided in the surrounding gap. The foam insulation 11 is filled.

The refrigerator 1 according to the first embodiment has a refrigerant circuit (refrigeration cycle) for cooling 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 piping. As shown in FIG. 2, in the inner box 9, a machine room 15 having a three-dimensional shape that rises in a stepwise manner is formed on the back side of the freezing room 14. Inside the machine room 15, a compressor 20 and a condenser (not shown) are arranged. Further, on the back side of the vegetable compartment 13, the storage compartments, which are partitioned by the fourth heat insulating partition 32, cool the refrigerating compartment 10, the ice making compartment and the switching compartment 12, the vegetable compartment 13 and the freezing compartment 14 to a predetermined temperature zone. A cooling device 21 is installed. The compressor 20 draws in the refrigerant, compresses it, and discharges it in a high temperature and high pressure state. The condenser radiates heat to the refrigerant to condense and liquefy it. Further, the capillary tube (capillary tube) serving as an expansion device decompresses the refrigerant passing therethrough and expands it. The cooler 21 heat-exchanges a refrigerant and air, and evaporates and gasifies the refrigerant. The air cooled by the cooler 21 is sent to each storage chamber by a blower (not shown). The amount of cold air (the amount of air) sent to each storage room is controlled by an electric open/close damper (not shown) provided in the air passage between the cooler 21 and each storage room.

Note that isobutane (R600a) is preferably used as the refrigerant circulating in the refrigeration cycle. Although other refrigerants can be used, isobutane has advantages such as not destroying the ozone layer when it is discarded, and a low global warming potential.

The first vacuum

heat insulating materials

40 and 42 arranged on the bottom surface and the top surface 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), which is a self-heating component for operation control, arranged on the rear surface of the ceiling. Therefore, it is preferable to dispose the first vacuum heat insulating material 40 having a higher heat insulating effect than urethane between the inner box 9 and the electronic control board. Further, since the refrigerator 1 has a radiation pipe (not shown) arranged on the ceiling, it is preferable to arrange the first vacuum heat insulating material 40 also between the radiation pipe and the inner box 9. Therefore, the first vacuum heat insulating material 40 arranged on the top surface of the refrigerator 1 is formed by bending the plate-like first vacuum heat insulating material 40 into an L shape, and applying a styrene rubber hot melt. It is adhered to the outer box 2 and simultaneously covers the ceiling of the refrigerator 1 and the electronic control board. That is, the manufacturing cost can be reduced by making the first vacuum heat insulating material 40 L-shaped. In addition, the L-shaped first vacuum heat insulating material 40 is not limited to the shape in which the bent portion is bent, and may be implemented in, for example, a curved shape.

Also, in the refrigerator 1, the compressor 20 and the condenser arranged in the machine room 15 generate heat during operation. Therefore, it is necessary to prevent heat from entering from the floor of the refrigerator 1, and for the same reason as in the case of the electronic control board, the first vacuum heat insulating material 42 is arranged between the inner box 9 and the machine room 15. Is preferred. Therefore, the first vacuum heat insulating material 42 arranged on the floor surface of the refrigerator 1 has an L-shaped plate-like first vacuum heat insulating material 42 so as to cover the floor surface of the refrigerator 1 and the machine room 15. It has a bent shape and is adhered to the inner box 9 by applying styrene rubber hot melt. The L-shaped first vacuum heat insulating material 42 is not limited to the bent shape of the bent portion, and may be, for example, a curved shape. The first vacuum heat insulating material 41 arranged on the back surface of the refrigerator 1 is adhered to the back metal component 22 by applying styrene rubber hot melt. The means for adhering the first vacuum

heat insulating materials

40, 41 and 42 is not limited to styrene rubber hot melt, and 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 the first embodiment, the second heat insulating partition 30 that partitions the vegetable compartment 13 includes the second vacuum heat insulating material 49. In the refrigerator 1 according to the first embodiment, not only the second heat insulating partition 30, but also the third heat insulating partition 31 and the fourth heat insulating partition 32 have the same structure as the second heat insulating partition 30. Two vacuum

heat insulating materials

50 and 51 may be provided. Hereinafter, the heat insulating partition structure of the refrigerator 1 according to the first embodiment will be described with the second heat insulating partition section 30 as a representative, with reference to FIGS. 3 to 6. Moreover, below, the 2nd heat insulation partition part 30 is only called the heat insulation partition part 30 for convenience.

FIG. 3 is a perspective view showing the heat insulating partition 30 in the refrigerator 1 of FIG. FIG. 4 is an exploded perspective view of the heat insulating partition 30 of FIG. FIG. 5 is a cross-sectional view showing a ZZ cross section in the heat insulating partition 30 of FIG. FIG. 6 is an enlarged view showing a main part of the heat insulating partition 30 of FIG. The main part of the heat insulating partition 30 shown in FIG. 6 is the part surrounded by the circle A in FIG.

As shown in FIGS. 3 and 4, the heat insulating partition 30 includes a second vacuum heat insulating material 49 arranged along a surface defining the inner box 9 and a coating for covering the second vacuum heat insulating material 49. And a section. The coating portion is combined with the first coating portion 62 that covers one surface side of the second vacuum heat insulating material 49 and the first coating portion 62, and covers the other surface side of the second vacuum heat insulating material 49. The second covering portion 63 is included. The first covering portion 62 and the second covering portion 63 are formed in a box shape with one surface open. A claw 62 a for fixing the first covering portion 62 and the second covering portion 63 is provided on the outer peripheral side portion of the first covering portion 62. A partition fixing portion 62b for fixing a partition portion (not shown) for partitioning the ice making chamber and the switching chamber 12 (see FIG. 2) is provided on the outer surface of the first coating portion 62 opposite to the coating surface. Has been. Further, a mounting portion 62c for fixing the heat insulating partition portion 30 to the inner box 9 with a screw is provided on the outer periphery of the first covering portion 62 on the

doors

5 and 6 side.

Specifically, as shown in FIG. 4, on the coating surface of the first and

second coating portions

62 and 63 that faces the second vacuum heat insulating material 49, a protrusion that abuts the second vacuum heat insulating material 49. The part 65 is formed. In addition, a concave portion 66 that is recessed toward the side opposite to the second vacuum heat insulating material 49 side is formed on the covering surface of the first and

second covering portions

62 and 63 facing the second vacuum heat insulating material 49. Has been done. In the case of the first embodiment, the convex portions 65 have a triangular shape, and a plurality of convex portions 65 are arranged on the covering surface. The shape of the convex portion 65 is not limited to the triangle as long as it is a polygonal shape. At this time, the convex portion 65 is formed in an embossed shape. Further, the recess 66 is arranged so as to intersect the covering surface. As a result, a depression corresponding to the convex portion 65 is formed on the outer surface of the first and

second covering portions

62 and 63 on the opposite side to the covering surface. That is, a recess corresponding to the convex portion 65 is formed on the outer surface portion of the first covering portion 62 that corresponds to the bottom surface of the ice making chamber and the bottom surface of the switching chamber 12 and the outer surface portion of the second covering portion 63 that corresponds to the top surface of the vegetable chamber 13. To be done. In this case, the above-mentioned outer surfaces of the first and

second covering portions

62 and 63 are provided with X-shaped irregularities formed of depressions corresponding to the convex portions 65.

Further, in addition to the convex portion 65 and the concave portion 66, a flat portion 63b facing the second vacuum heat insulating material 49 is formed on the coating surface of the second coating portion 63. Further, the flat portion 63b is provided with an adhesive member 64 for joining the second covering portion 63 and the second vacuum heat insulating material 49. Further,

soft tapes

60 and 61 are provided on the outer peripheral side surface of the second vacuum heat insulating material 49 and are joined to the inner side surface of the first covering portion 62 into which the second vacuum heat insulating material 49 is fitted.

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

second coating portions

62 and 63 that faces the second vacuum heat insulating material. In particular, by providing the convex portion 65 and the concave portion 66 on both coated surfaces of the first and

second coating portions

62 and 63, it is possible to improve the rigidity of the first and

second coating portions

62 and 63, respectively. it can. Therefore, the rigidity of the whole covering portion formed by combining these can be significantly improved. In addition, it is generally preferable to use a double-sided tape as the adhesive member 64 from the viewpoint of easy handling, but if there is a facility for applying a styrene rubber-based hot melt, those may be used.

A hole 63a is provided on the outer peripheral side of the second covering portion 63 for coupling with the claw 62a of the first covering portion 62 when it is combined with the first covering portion 62. The claw 62a may be provided on the outer peripheral side of the second covering portion 63, and the hole 63a for coupling with the claw 62a may be provided on the outer peripheral side of the first covering portion 62. Further, although the case where the hole 63a shown in FIG. 4 is formed as a through hole has been described, it may be a depression 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. An attachment portion 63c for fixing the heat insulating partition portion 30 to the inner box 9 with a screw is provided on the outer periphery of the second covering portion 63 on the

doors

5 and 6 side. Although the uneven shape of the first and

second covering portions

62 and 63 shown in FIGS. 3 and 4 is formed in an X shape, the uneven shape may be formed in a lattice shape, for example. For example, the concavo-convex shape is formed in a grid shape in which the convex portions 65 are formed in a quadrangular shape and a plurality of the convex portions 65 are arranged at equal intervals on the covering surface so that the concave portions 66 are arranged orthogonally.

As shown in FIG. 5, the upper surface and the outer periphery of the first covering portion 62 have an X-shaped uneven shape and a convex shape with respect to the outer surface due to the partition fixing portion 62b and the like. Therefore, the inner surface of the first covering portion 62 secures a certain clearance with respect to the surface of the second vacuum heat insulating material 49. The other portion of the inner surface of the first covering portion 62 has a concave shape that is in contact with the surface of the second vacuum heat insulating material 49. Similarly, the lower surface and the outer periphery of the second covering portion 63 have a convex shape with respect to the outer side surface due to the X-shaped concavo-convex shape and the flat portion 63b. Therefore, the inner side surface of the second covering portion 63 secures a certain clearance with respect to the surface of the second vacuum heat insulating material 49. The other portion of the inner surface of the second covering portion 63 has a concave shape that is in contact with the surface of the second vacuum heat insulating material 49. In addition, in FIG. 5, the X-shaped portion is formed in a convex shape, and the surrounding area is formed in a triangular concave shape. However, the X-shaped portion is formed in a concave shape, and the surrounding area is formed in a triangular convex shape. It may be formed.

Further, as shown in FIG. 6, a rib 63e is provided on the outer surface of the second covering portion 63 opposite to the covering surface, over the entire surface including the X-shaped uneven shape of the outer surface. ..

In the refrigerator 1 according to the first embodiment, the case where the vegetable compartment 13 and the ice making compartment and the switching compartment 12 are partitioned by the heat insulating partition 30 has been described, but this is an example. The heat insulating partition 30 according to the present invention can be installed at a heat insulating partition including the second vacuum heat insulating material between all the rooms in the inner box 9.

Further, as the structure of the covering portion of the heat insulating partition portion 30, in the first embodiment, the second vacuum heat insulating material 49 is fitted into the first covering portion 62, and the second covering member 62 Although a structure is shown in which the covering portion 63 is combined as a lid, this is an example. As the structure of the cover of the heat insulating partition 30, the second vacuum heat insulating material 49 is fitted into the second cover 63, and the first cover 62 is combined with the second cover 63 as a lid. It may be a structure that allows it.

That is, in the structure of the heat insulating partition 30 in the refrigerator 1 of the first embodiment, at least the entire six peripheral surfaces of the second vacuum heat insulating material 49 are covered with two or more covering components having concavo-convex shapes on the opposite surfaces. It should be structured.

The first and

second covering portions

62 and 63 constituting the heat insulating partition portion 30 are made of a hard plastic such as PP (polypropylene) or ABS and have a thickness of about 1.5 mm. As a material for the first and

second coating portions

62 and 63, an inexpensive material such as PP or ABS can be adopted as long as the temperature applied during manufacturing is about 70°C. Further, when the temperature applied during production exceeds 100° C. due to heat generation due to foaming of the polyurethane foam, a material such as heat-resistant ABS, PC (polycarbonate) or PA (polyamide) can be adopted. Since the first and

second covering portions

62 and 63 are resin molded products, it is desirable to provide the resin injection gate on the inner side surface which is inconspicuous from the viewpoint of the design surface.

<Assembly procedure of the second heat insulation partition 30>
Here, a procedure for assembling the heat insulating partition 30 in the first embodiment will be described. First, the

soft tapes

60 and 61 are adhered to the outer peripheral surface of the second vacuum heat insulating material 49, and the adhesive member 64 is attached to the lower surface of the second vacuum heat insulating material 49 facing the flat portion 63b of the second covering portion 63. Let it adhere. Next, the second vacuum heat insulating material 49 is inserted inside the first covering portion 62. Subsequently, the second covering portion 63 is covered as a lid from the opening side of the first covering portion 62, and the hole 63a provided in the outer peripheral side portion of the second covering portion 63 and the outer peripheral side of the first covering portion 62. The claw 62a provided on the section is connected. Then, the second vacuum heat insulating material 49 and the flat portion 63b are joined and fixed via the adhesive member 64. The procedure described here is merely an example, and the adhesive member 64 may be adhered to the flat portion 63b and then bonded to the lower surface of the second vacuum heat insulating material 49.

<Effects of First Embodiment>
As described above, in the refrigerator 1 of the first embodiment, the first and second coatings are provided by providing the first and

second coating portions

62 and 63 forming the heat insulating partition 30 with the uneven shape. The surface rigidity of the

parts

62 and 63 themselves is improved. Therefore, according to the refrigerator 1 of the first embodiment, the deformation of the first and

second covering portions

62 and 63 can be suppressed. Therefore, it is possible to prevent deterioration of workability when the second vacuum heat insulating material 49 is fitted into the first coating portion 62 or when the second coating portion 63 and the first coating portion 62 are combined. Further, since the deformation of the heat insulating partition 30 can be prevented, it is possible to avoid the occurrence of floating between the second vacuum heat insulating material 49 and 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 insulating material 49 by the convex portion 65, the flat portion 63b, or the like.

Moreover, it is preferable that the concave portion 66 is arranged so as to intersect the coating surfaces of the first and

second coating portions

62 and 63. Thereby, the rigidity of each of the first and

second covering portions

62 and 63 can be improved.

Further, it is preferable that the convex portion 65 has a polygonal shape such as a triangle or a quadrangle, and a plurality of convex portions 65 are arranged on the covering surfaces of the first and

second covering portions

62 and 63. As a result, the concave portions 66 formed between the adjacent convex portions 65 and the convex portions 65 are arranged so as to intersect the covering surfaces of the first and

second covering portions

62 and 63. Therefore, the rigidity of each of the first and

second covering portions

62 and 63 can be improved.

Further, in the refrigerator 1 according to the first embodiment, the second vacuum heat insulating material 49 of the second vacuum heat insulating material 49 is provided by providing the first and

second covering portions

62 and 63 forming the heat insulating partition portion 30 with the X-shaped concave and convex shape. It becomes possible to provide the concave portion 66 that secures a certain clearance from the surface. In this case, by providing a resin injection gate on the surface of the recess 66 on the inner side surfaces of the first and

second coating portions

62 and 63, the surface of the second vacuum heat insulating material 49 can be used without using a sub-member such as Styrofoam. It is possible to provide a structure that prevents contact between the protrusion and the resin injection gate. When the protrusion of the resin injection gate is generated, the concave portion 66 is provided on the second vacuum heat insulating material 49 side with respect to the convex portion 65 so that the surface of the second vacuum heat insulating material 49 does not contact the protrusion of the resin injection gate. It is desirable to recess the other side by about 3 mm. Therefore, it is possible to prevent the surface of the second vacuum heat insulating material 49 from being damaged due to contact with the protrusions of the resin injection gate, and the outer skin material of the second vacuum heat insulating material 49 from breaking and becoming a defective product. ..

Further, the thickness of the uneven shape of the first and

second covering portions

62 and 63 is set to about 1.5 mm, and the uneven shape is embossed not only on the inside facing the second vacuum heat insulating material 49 but also on the outside. I decided to provide it. In this case, as compared with the case where the outer sides of the first and

second covering portions

62 and 63 are made flat, the concave space outside the first and

second covering portions

62 and 63 is equal to the content of each room. The product can be secured.

Furthermore, by attaching the

soft tapes

60 and 61 to the outer peripheral side surface of the second vacuum heat insulating material 49, when the second vacuum heat insulating material 49 is fitted into the first covering portion 62, or the first and second It is possible to prevent a problem from occurring when the covering

portions

62 and 63 are united. That is, the outer skin material near the outer circumference of the second vacuum heat insulating material 49 comes into contact with the ribs provided near the inner side surfaces of the first and

second covering portions

62 and 63, and is torn and becomes a defective product. Can be prevented.

Further, it is preferable to provide a certain clearance in advance between the side surface of the second vacuum heat insulating material 49 and the inner side surface of the first covering portion 62 in order to facilitate the assembly. By providing

soft tapes

60 and 61 between the side surface of the second vacuum heat insulating material 49 and the inner side surface of the first covering portion 62, the clearance gap is filled, and the second vacuum heat insulating material 49 is formed. It is possible to prevent displacement or movement. Therefore, the risk that the outer cover material of the second vacuum heat insulating material 49 is damaged can be suppressed.

By providing a flat portion 63b for sticking the adhesive member 64 on the inner lower surface of the second cover portion 63, the second vacuum heat insulating material 49 and the second cover portion 63 are interposed via the adhesive member 64. Securely fixed. Therefore, when the heat insulating partition 30 is assembled to the inner box 9, the displacement or movement of the second vacuum heat insulating material 49 is prevented in the heat insulating partition 30 and the second vacuum heat insulating material 49 is prevented from moving. The risk of damage to the outer skin can be suppressed. Note that the flat portion 63b is formed by the thickness of the adhesive member 64 from the concave portion 66 as compared with the convex portion 65 so that the convex portion 65 of the second covering portion 63 does not float from the surface of the second vacuum heat insulating material 49. It is preferable to reduce the height.

As a joining method for assembling the first and

second coating portions

62 and 63, the claw 62a provided on the outer periphery of the first coating portion 62 and the hole 63a provided on the outer periphery of the second coating portion 63 are used. did. Thus, the two parts can be easily combined without using a sub member such as a screw or a tape, and the workability can be improved. Further, even if a problem occurs in the second vacuum heat insulating material 49, the first covering portion 62 and the second covering portion 63 are united by releasing the connection between the claw 62a and the hole 63a. Can be easily disassembled from the state.

Furthermore, by providing the claws 63d on both side surfaces of the second covering portion 63, it is possible to fix the heat insulating partition 30 to the inner box 9 without using a sub member such as a screw, and the heat insulating partition to the inner box 9. It is possible to improve workability when attaching the portion 30. Further, even if a problem occurs in the heat insulating partition 30, the heat insulating partition 30 can be easily removed from the inner box 9.

Further, by providing the ribs 63e over the entire surface including the uneven shape of the outer surface of the second covering portion 63, the surface area of the outer surface of the second covering portion 63 can be increased. Therefore, it is possible to easily evaporate the water adhering to the outer surface of the second covering portion 63, and it is possible to prevent dew from adhering to the outer surface of the second covering portion 63, which is the top surface of the vegetable compartment 13.

Embodiment 2.
Next, the refrigerator 1 according to Embodiment 2 of the present invention will be described with reference to FIGS. 7 and 8. FIG. 7: is a perspective view which shows the refrigerator 1 which concerns on Embodiment 2 of this 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 according to the first embodiment described above, the room as the storage room is configured by arranging the refrigerating room 10, the ice making room and the switching room 12, the vegetable room 13 and the freezing room 14 from the top. Then, 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, the second vacuum

heat insulating materials

49, 50, and The refrigerator 1 having a structure incorporating 51 has been described.

On the other hand, in the second embodiment, as compared with the refrigerator 1 of the first embodiment, a room in which the vegetable compartment 13 and the freezer compartment 14 are replaced with each other in order to improve efficiency in terms of energy saving and thermal efficiency. The arranged refrigerator 1 will be described. In the refrigerator 1 according to the second embodiment, the same parts as those of the refrigerator 1 according to the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 7 and FIG. 8, the refrigerator 1 according to the second embodiment is provided in the inner box 9 and divides the inner box 9 into storage chambers having different temperature zones. 29, a second heat insulating partition 33, a third heat insulating partition 31, and a fourth heat insulating partition 32. In the refrigerator 1, the first heat insulation partition 29, the second heat insulation partition 33, the third heat insulation partition 31, and the fourth heat insulation partition 32 form the space in the inner box 9 into a plurality of storage chambers. It is divided into a certain refrigerating room 10, an ice making and switching room 12, a vegetable room 13, and a freezing room 14. The refrigerator 1 also includes a plurality of

doors

In the refrigerator 1, a refrigerating compartment 10 is formed at the top, and an ice making compartment and a switching compartment 12, a freezing compartment 14, and a storage compartment having a vegetable compartment 13 at the bottom are formed in order from the top. Specifically, the refrigerating compartment 10 is divided into the upper part of the first heat insulating partition 29 and is maintained at the refrigerating temperature (about +5° C.). The ice making chamber and the switching chamber 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 of the fourth heat insulating partition 32, and the freezing temperature in the ice making room is changed. (About -20°C), and the switching chamber 12 is maintained at the supercooling temperature (-7 to 0°C).

The freezing compartment 14 is divided into a space 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 of the fourth heat insulating partition 32, and the freezing temperature (about -20°C). Has been maintained. The vegetable compartment 13 is divided into a lower part of the third heat insulating partition 31, and is maintained at a refrigerating temperature (about +5° C.).

<Structure of the second heat insulating partition 33>
Here, in the case of the refrigerator 1 according to the second embodiment, the second heat insulating partition 33 that partitions the freezer compartment 14 includes the second vacuum heat insulating material 49. In the refrigerator 1 according to the second embodiment, not only the second heat insulating partition 33 but also the third heat insulating partition 31 and the fourth heat insulating partition 32 have the same configuration as the second heat insulating partition 33. Two vacuum

heat insulating materials

50 and 51 may be provided. Hereinafter, the heat insulating partition structure of the refrigerator 1 according to the second embodiment will be described with the second heat insulating partition 33 as a representative, with reference to FIGS. 9 to 11. Moreover, below, the 2nd heat insulation partition part 33 is only called the heat insulation partition part 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 an exploded perspective view of the heat insulating partition 33 of FIG. 9. FIG. 11 is a cross-sectional view showing a YY cross section in the heat insulating partition 33 of FIG.

As shown in FIGS. 9 to 11 in which parts corresponding to those in FIGS. 3 to 5 are denoted by the same reference numerals, the heat insulating partition 33 is a second vacuum heat insulating member arranged along a surface that partitions the inside of the inner box 9. The material 49 and a covering portion that covers the second vacuum heat insulating material 49 are provided. That is, this covering portion is combined with the first covering portion 62 for covering one surface side of the second vacuum heat insulating material 49 and the first covering portion 62, like the covering portion of the first embodiment. , And a second coating portion 63 for coating the other surface side of the second vacuum heat insulating material 49. Therefore, the heat insulation partition part 33 is provided with ribs 63e on the point where the heat insulation partition part 30 partitions the freezer compartment 14 instead of partitioning the vegetable compartment 13, and on the outer surface of the second covering part 63. It is configured similarly to the heat insulating partition 30, except that it is not provided.

<Assembly procedure of the second heat insulation partition 33>
Here, the procedure for assembling the heat insulating partition 33 in the second embodiment will be described. First, the

soft tapes

60 and 61 are bonded to the outer peripheral surface of the second vacuum heat insulating material 49, and the adhesive member 64 is bonded to the lower surface of the second vacuum heat insulating material 49 facing the flat portion 63b of the second covering portion 63. Let Next, the second vacuum heat insulating material 49 is inserted inside the first covering portion 62. Subsequently, the second covering portion 63 is covered as a lid from the opening side of the first covering portion 62, and the hole 63a provided in the outer peripheral side portion of the second covering portion 63 and the outer peripheral side of the first covering portion 62. The claw 62a provided on the section is connected. Then, the second vacuum heat insulating material 49 and the flat portion 63b are joined and fixed via the adhesive member 64. The procedure described here is merely an example, and the adhesive member 64 may be adhered to the flat portion 63b and then bonded to the lower surface of the second vacuum heat insulating material 49.

<Effects of Second Embodiment>
As described above, in the refrigerator 1 according to the second embodiment, by providing the first and

second covering portions

62 and 63 forming the heat insulating partition 33 with the uneven shape, the first and second The surface rigidity of the

coating portions

62 and 63 themselves is improved. Therefore, according to the refrigerator 1 according to the second embodiment, the deformation of the first and

second covering portions

62 and 63 can be suppressed. Therefore, it is possible to prevent deterioration of workability when the second vacuum heat insulating material 49 is fitted into the first coating portion 62 or when the second coating portion 63 and the first coating portion 62 are combined. Further, since the deformation of the heat insulating partition 33 can be prevented, it is possible to avoid the occurrence of floating between the second vacuum heat insulating material 49 and 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 insulating material 49 by the convex portion 65, the flat portion 63b, or the like.

Further, in the refrigerator 1 according to the second embodiment, the refrigerating room 10 is formed at the uppermost part, and the ice making room and the switching room 12, the freezing room 14, and the storage room having the vegetable room 13 at the lowermost part are arranged in order from the top. Has been formed. That is, in the refrigerator 1 according to the second embodiment, the bottom of the vegetable compartment 13 is the vegetable compartment 13 without interposing the vegetable compartment 13 between the ice-making compartment and the switching compartment 12 and the freezing compartment 14, and the ice-making compartment and the switching compartment. 12 and the freezer compartment 14 were arranged vertically adjacent to each other. As a result, compared with the refrigerator 1 of the first embodiment, it is possible to improve efficiency in terms of energy saving and thermal efficiency.

Further, in the refrigerator 1 according to the second embodiment, by providing the first and

second covering portions

62 and 63 forming the heat insulating partition portion 33 with an X-shaped uneven shape, the second vacuum heat insulating material 49 It becomes possible to provide the concave portion 66 that secures a certain clearance from the surface. In this case, by providing a resin injection gate on the surface of the recess 66 on the inner surface of the first and

second coating portions

62 and 63, the surface of the second vacuum heat insulating material 49 can be formed without using a sub-member such as Styrofoam. The resin injection gate can be prevented from coming into contact with the protrusions. When the protrusion of the resin injection gate is generated, the concave portion 66 is provided on the second vacuum heat insulating material 49 side with respect to the convex portion 65 so that the surface of the second vacuum heat insulating material 49 does not contact the protrusion of the resin injection gate. It is desirable to recess the other side by about 3 mm. Therefore, it is possible to prevent the surface of the second vacuum heat insulating material 49 from being damaged due to contact with the protrusions of the resin injection gate, and the outer skin material of the second vacuum heat insulating material 49 from breaking and becoming a defective product. ..

Further, the thickness of the uneven shape of the first and

second covering portions

62 and 63 are made flat, the concave space outside the first and

second covering portions

62 and 63 is equal to the content of each room. The product can be secured.

Furthermore, by attaching the

soft tapes

portions

second covering portions

62 and 63, and is torn and becomes a defective product. Can be prevented.

Further, it is preferable to provide a certain clearance in advance between the side surface of the second vacuum heat insulating material 49 and the inner side surface of the first covering portion 62 in order to facilitate the assembly. By providing the

soft tapes

60 and 61 between the side surface of the second vacuum heat insulating material 49 and the inner side surface of the first covering portion 62, the clearance gap is filled and the second vacuum heat insulating material 49 is formed. It is possible to prevent displacement or movement. Therefore, the risk that the outer cover material of the second vacuum heat insulating material 49 is damaged can be suppressed.

By providing a flat portion 63b for sticking the adhesive member 64 on the inner lower surface of the second cover portion 63, the second vacuum heat insulating material 49 and the second cover portion 63 are interposed via the adhesive member 64. Securely fixed. Therefore, when the heat insulating partition 33 is assembled to the inner box 9, it is possible to prevent the second vacuum heat insulating material 49 from shifting or moving in the heat insulating partition 33, and to prevent the second vacuum heat insulating material 49 from moving. The risk of damage to the outer skin can be suppressed. Note that the flat portion 63b is formed by the thickness of the adhesive member 64 from the concave portion 66 as compared with the convex portion 65 so that the convex portion 65 of the second covering portion 63 does not float from the surface of the second vacuum heat insulating material 49. It is preferable to reduce the height.

As a joining method for assembling the first and

second coating portions

Further, by providing the claws 63d on both side surfaces of the second covering portion 63, the heat insulating partition 33 can be fixed to the inner box 9 without using a sub member such as a screw, and the heat insulating partition can be fixed to the inner box 9. It is possible to improve workability when attaching the portion 33. Further, even if a problem 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 the first and second embodiments described above. For example, the arrangement order or configuration of the refrigerating room 10, the ice making room and the switching room 12, the vegetable room 13 and the freezing room 14 in the refrigerator 1 are not limited to those in the first and second embodiments described above, and may be implemented in various variations. I shall.

1 refrigerator, 2 outer box, 3, 4, 5, 6, 7, 8 door, 9 inner box, 10 refrigerating room, 11 rigid urethane foam insulation, 12 switching room, 13 vegetable room, 14 freezer room, 15 machine room , 20, compressor, 21 cooler, 22 rear metal parts, 29 first heat insulating partition, 30, 33 second heat insulating partition, 31 third heat insulating partition, 32 fourth heat insulating partition, 40, 41, 42, 46, 47, 48 first vacuum heat insulating material, 49, 50, 51 second vacuum heat insulating material, 60, 61 soft tape, 62 first covering portion, 62a claw, 62b partition fixing portion, 62c mounting portion, 63 Second covering part, 63a hole, 63b flat part, 63c mounting part, 63d claw, 63e rib, 64 adhesive member, 65 convex part, 66 concave part.

Claims

An outer box that makes up the appearance,
An inner box arranged inside the outer box to form a storage,
A first vacuum heat insulating material arranged in a space formed between the outer box and the inner box,
A foam insulation material filled in the space,
A refrigerator provided in the inner box, comprising a heat insulating partition for partitioning the inside of the inner box for each storage compartment having a different temperature zone,
The heat insulating partition is
A second vacuum heat insulating material arranged along a surface that divides the inner box,
A second vacuum heat insulating material, and a covering portion,
The covering is
A first coating portion that covers one surface side of the second vacuum heat insulating material,
Combining with the first coating portion, a second coating portion that covers the other surface side of the second vacuum heat insulating material, and is configured to include:
The coating surface facing the second vacuum heat insulating material in at least one of the first or second coating portion,
A convex portion that contacts the second vacuum heat insulating material,
The second vacuum heat insulating material side and a recessed portion which is recessed toward the opposite side,
A flat portion protruding toward the second vacuum heat insulating material is formed,
The refrigerator in which the flat part is provided with an adhesive member for joining the first or second covering part and the second vacuum heat insulating material.
The recess is
The refrigerator according to claim 1, wherein the refrigerator is arranged so as to intersect with the covering surface.
The convex portion is
The refrigerator according to claim 1 or 2, which has a polygonal shape and is arranged in plural on the covering surface.
The refrigerator according to any one of claims 1 to 3, wherein a rib is provided over the entire outer surface of the second covering portion opposite to the covering surface.
The storage compartment partitioned by the heat insulation partition in the inner box, further comprising a partition to partition the storage compartments of different temperature zones,
The heat insulating partition is
The refrigerator according to any one of claims 1 to 4, wherein a partition fixing portion for fixing the partition portion is provided on an outer surface of the first coating portion opposite to the coating surface.