WO2022100616A1

WO2022100616A1 - Refrigerator

Info

Publication number: WO2022100616A1
Application number: PCT/CN2021/129835
Authority: WO
Inventors: 穗高淳; 铃木悠太; 冢原紘也
Original assignee: 重庆海尔制冷电器有限公司; 海尔智家股份有限公司; 青岛海尔电冰箱有限公司; Aqua 株式会社
Priority date: 2020-11-11
Filing date: 2021-11-10
Publication date: 2022-05-19
Also published as: CN115280086A; EP4227619A1; JP2022077371A; EP4227619A4

Abstract

Provided is a refrigerator, comprising an outer case and an inner case, and a refrigerant pipe, a vacuum thermal insulation material, a foam thermal insulation material, and a cushioning member which are arranged between the outer case and the inner case; a refrigerant flows in the refrigerant pipe; in an area where the refrigerant pipe and the vacuum thermal insulation material are arranged, the cushioning member is arranged between the refrigerant pipe and the vacuum thermal insulation material; the inner surface of the outer case is connected to the refrigerant pipe; a space between the inner surface of the outer case and the vacuum thermal insulation material is filled with the foam thermal insulation material; when the foam thermal insulation material in a liquid state is filled, no deformation is generated on the outer surface of the outer case.

Description

refrigerator

technical field

The present invention relates to a refrigerator including a vacuum insulation material.

Background technique

In the refrigerator, in order to keep cold in the storage area provided in the inner box, a heat insulating material is provided in the area between the outer box and the inner box. Generally, filled foam insulation materials are used as insulation materials, such as polyurethane foam, but in order to improve the insulation performance, some refrigerators also use vacuum insulation materials at the same time (for example, refer to Patent Document 1: Japanese Patent Laid-Open No. 2005-55086 Bulletin No. ).

In the refrigerator described in Patent Document 1, a vacuum heat insulating material is arranged in a region where no refrigerant pipes are arranged, and the refrigerant flows through the refrigerant pipes. However, in order to improve the thermal insulation performance of a refrigerator, it is desired to install the vacuum heat insulating material in a wider area in addition to the location where the refrigerant piping is arranged. In this case, the space between the outer case and the inner case may be blocked by the refrigerant piping and the vacuum heat insulating material, and the liquid foam heat insulating material may not be sufficiently filled at the time of manufacture, and air may accumulate. Reduce thermal insulation performance.

In addition, the liquid foam insulation material may be injected unevenly locally, and in this case, the vacuum insulation material or the refrigerant piping may be pushed to the outside, and the outer surface of the outer case may be deformed to bulge outward.

SUMMARY OF THE INVENTION

The object of the present invention is to solve the above-mentioned problems, and to provide a refrigerator in which the area where the refrigerant piping and the vacuum heat insulating material are arranged between the outer box and the inner box is sufficiently filled with the foamed heat insulating material, without the outside The outer surface of the box is deformed.

The refrigerator of the present invention is characterized in that it includes:

The refrigerator main body has an outer box and an inner box, and a storage area is arranged on the inner side of the inner box;

a refrigerant pipe through which a refrigerant flows, and is disposed between the outer case and the inner case;

a vacuum heat insulating material, arranged between the outer box and the inner box;

foam insulation material, filled between the outer box and the inner box;

as well as,

In the area where the refrigerant piping and the vacuum heat insulating material are arranged between the outer case and the inner case,

The inner surface of the outer case is in contact with the refrigerant piping,

A buffer member is arranged between the refrigerant piping and the vacuum heat insulating material,

The foamed heat insulating material is filled in the space between the inner surface of the outer case and the vacuum heat insulating material.

According to the present invention, in the area where the refrigerant piping and the vacuum heat insulating material are arranged between the outer case and the inner case, the inner surface of the outer case is in contact with the refrigerant piping, and between the refrigerant piping and the vacuum heat insulating material A buffer member is provided. With this buffer member, since a space can be secured between the refrigerant piping and the vacuum heat insulating material, the space between the inner surface of the outer case and the vacuum heat insulating material can be sufficiently filled via the space during manufacture in the space between the inner surface of the outer case and the vacuum heat insulating material. Liquid foam insulation material. In addition, the air between the outer box and the inner box can also escape to the outside through this space, so that air accumulation does not occur. In addition, since the liquid foam heat insulating material smoothly flows through the space, it is not partially filled unevenly, and deformation in which the outer surface of the outer case protrudes outward is not generated.

Therefore, the present invention provides a refrigerator that can sufficiently fill the area where the refrigerant piping and the vacuum heat insulating material are arranged between the outer box and the inner box with the foam insulation material, without filling the outer surface of the outer box with the foam insulation material. produce deformation.

Moreover, the refrigerator of this invention is characterized in that the said buffer member is formed of EPS (Expanded polystyrene/expanded polystyrene).

EPS is produced by foaming polystyrene mainly with hydrocarbon gases such as butane or pentane. Due to the existence of air bubbles, EPS has elasticity, good shock absorption and good heat insulation. Thereby, a space can be reliably secured between the refrigerant piping and the vacuum heat insulating material, the space serving as a flow path of the liquid foam heat insulating material, and the deformation of the outer surface of the outer case can be prevented as a buffer material. in the future.

Furthermore, the refrigerator of the present invention is characterized in that,

A recessed portion having a shape along the outer shape of the refrigerant pipe is formed on a surface of the buffer member that is in contact with the refrigerant pipe.

According to the present invention, on the surface of the buffer member that is in contact with the refrigerant piping, the recessed portion having the shape along the outer shape of the refrigerant piping is formed. Therefore, since the buffer member holds the refrigerant pipe so as to bite, the buffer member can be prevented from slipping off the refrigerant pipe. Thereby, a buffer member can be arrange|positioned stably between a refrigerant|coolant piping and a vacuum heat insulating material.

At least two of the buffer members are arranged with a predetermined interval therebetween.

According to this invention, since at least two said buffer members are arrange|positioned at predetermined space|interval, sufficient space which can flow a liquid foam heat insulating material can be ensured between a buffer member and a buffer member.

In a plan view of the outer case and the inner case, the buffer member is arranged in a direction connecting the injection port and the farthest position where the vacuum heat insulating material and the refrigerant piping are arranged. The position where the injection port is the injection port of the liquid foam thermal insulation material, and the farthest position is the liquid foam thermal insulation material arranged in the vacuum thermal insulation material The position in the injection area that is farthest from the injection port.

ADVANTAGE OF THE INVENTION According to this invention, the injection port of the liquid foam heat insulating material is connected to the position farthest from the injection port in the injection area of the liquid foam heat insulation material provided in the vacuum heat insulating material. The buffer member is arranged at the position where the refrigerant piping and the vacuum heat insulating material are arranged. Therefore, the space is surely secured along the direction in which the buffer member is arranged. By injecting the liquid foam heat insulating material, the liquid foam heat insulating material flows into the air reservoir existing between the outer case and the inner case, and the liquid foam heat insulating material flows into the air reservoir existing between the outer case and the inner case, along the line connecting the farthest position to the injection port. direction, push this air out and let it escape from the injection port to the outside. Thereby, it is possible to prevent the generation of air from being accumulated beforehand.

Invention effect

As described above, according to the present invention, it is possible to provide a refrigerator in which the foamed heat insulating material is sufficiently filled in the area where the refrigerant piping and the vacuum heat insulating material are arranged between the outer case and the inner case, without the outside The outer surface of the box is deformed.

Description of drawings

1A is a bottom view schematically showing the refrigerator according to the first embodiment of the present invention when the refrigerator is horizontally down and the door side is downward;

1B is a side view schematically showing a refrigerator of the present invention with a small amount of liquid foam insulation material injected when the refrigerator of the present invention is placed sideways and the door side is down;

1C is a side view schematically showing a refrigerator of the present invention injected with a liquid foam insulation material when the refrigerator of the present invention is placed sideways and the door side is down;

1D is a side view schematically showing a refrigerator of the present invention injected with a liquid foam insulation material when the refrigerator of the present invention is placed sideways and the door side is downward;

2 is a cross-sectional view schematically showing a structure in which a buffer member is arranged between a refrigerant pipe and a vacuum heat insulating material in the refrigerator shown in FIGS. 1A to 1D ;

3A is a cross-sectional view schematically showing another embodiment 1 of the buffer member disposed between the refrigerant piping and the vacuum heat insulating material;

3B is a perspective view schematically showing the buffer member shown in FIG. 3A;

4A is a cross-sectional view schematically showing another embodiment 2 of the buffer member disposed between the refrigerant piping and the vacuum heat insulating material;

4B is a perspective view schematically showing the buffer member shown in FIG. 4A;

5A is a side view schematically showing a refrigerator according to a second embodiment of the present invention;

5B is a side view schematically showing the flow of air remaining between an outer case and an inner case in the refrigerator shown in FIG. 5A;

Fig. 6A is a bottom view schematically showing a conventional refrigerator when the refrigerator is turned sideways and the door side is downward;

6B is a side view schematically showing a refrigerator in which a liquid foam insulating material is injected when the conventional refrigerator is placed sideways and the door side is down;

6C is a side view schematically showing a refrigerator in which a liquid foam insulating material is injected when the conventional refrigerator is placed sideways and the door side is down;

6D is a side view schematically showing a refrigerator in which a liquid foam insulating material is injected when the conventional refrigerator is placed sideways and the door side is down;

7 is a cross-sectional view schematically showing a problem that occurs at a position where the refrigerant piping and the vacuum heat insulating material are arranged in the refrigerator shown in FIGS. 6A to 6D .

Detailed ways

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In addition, the refrigerator demonstrated below is in order to express the technical idea of this invention, and unless there is specific description, this invention is not limited to the following content. In each drawing, the same reference numerals are sometimes attached to members having the same function. In consideration of the easiness of explanation or understanding of the main points, the embodiments are sometimes shown separately for convenience, but the replacement or combination of parts of the structures shown in different embodiments is possible. In order to clarify the description, the sizes, positional relationships, and the like of members shown in the drawings are sometimes exaggerated.

(conventional refrigerator)

6A to 6D are side views schematically showing an example of the conventional refrigerator 102 . FIG. 7 is a cross-sectional view schematically showing a problem that occurs at a position where the vacuum heat insulating material 110 and the refrigerant piping 120 are arranged in the refrigerator 102 shown in FIG. 6 . First, with reference to FIGS. 6A-6D and FIG. 7, the problem in the conventional refrigerator containing a vacuum heat insulating material is demonstrated.

FIGS. 6A to 6D show a situation in which the refrigerator 102 is turned sideways with the door side down, so that the liquid foam insulating material 130 is injected between the outer box 106 and the inner box 104 of the refrigerator 102 . FIG. 6A shows the bottom surface of the refrigerator 102 in this state, and FIGS. 6B to 6D show the side surfaces of the refrigerator 102 . In each figure, the internal constituent members are shown in a perspective manner, and in particular, in FIGS. 6B to 6D , the vacuum heat insulating material 110 and the refrigerant arranged between the outer case 106 and the inner case 104 are shown. The piping 120 and the injected liquid foam heat insulating material 130 are shown colored gray.

Vacuum Insulation Panel (VIP: Vacuum Insulation Panel) is a thermal insulation material that wraps the thermal insulation material with a resin film and decompresses the inside to make it into a vacuum state. It can prevent the heat transfer of the gas, so it has more advantages than other The thermal insulation material has a much higher thermal insulation performance. The refrigerant piping 120 is a constituent member of the cooling cycle of the refrigerator, and is a metal piping in which the refrigerant flows. In particular, in the illustrated refrigerant piping 120, a high-temperature and high-pressure refrigerant (mainly gas) discharged from the compressor C in the machine room flows. In order to dissipate the heat of the refrigerant flowing therein, the refrigerant piping 120 forms a long flow path whose extension direction is changed several times in a region between the outer case 106 and the inner case 104 .

In the example shown in the figure, in the region between the outer case 106 and the inner case 104, the vacuum heat insulating material 110 is arranged from the center of the refrigerator 102 to the lower side (right side in the figure). In the center area of the refrigerator 102, the refrigerant piping 120 and the vacuum heat insulating material 110 are arranged. Moreover, in the center area|region of the refrigerator 102, the injection port Q of the liquid foam heat insulating material 130 is provided. The liquid foam heat insulating material 130 is injected by the injection device P attached to the injection port Q.

In the area where such refrigerant piping 120 and the vacuum heat insulating material 110 are arranged, as shown in FIG. The vacuum heat insulating material 110 is arranged on the inner tank 104 side of the refrigerant piping 120 .

FIGS. 6B to 6D show the state in which the liquid foam insulating material 130 is injected. In the area where the vacuum heat insulating material 110 and the refrigerant piping 120 are arranged, the refrigerant piping 120 is in contact with the inner surface 106A of the outer case 106 , and there is no space between the refrigerant piping 120 and the vacuum heat insulating material 110 . Therefore, in the area on the upper side (left side in the figure) of the vacuum heat insulating material 110 , the inflow of the liquid foam heat insulating material 130 is blocked by the refrigerant piping 120 and the vacuum heat insulating material 110 . Thereby, the liquid foam heat insulating material 130 does not flow into the area|region in which the vacuum heat insulating material 110 is arrange|positioned, and residual air accumulates A as shown to FIG. 6D. Since a region where the foamed heat insulating material 130 is not filled is generated, the heat insulating performance is lowered. In addition, the air reservoir A expands and contracts repeatedly due to temperature fluctuations, which may cause a problem in durability.

In addition, since the liquid foam heat insulating material 130 flows to the side with lower flow resistance, as shown in FIG. 7 , the liquid foam heat insulating material 130 is unevenly filled in the vacuum heat insulating material 110 and the vacuum heat insulating material 110 . between the inner surfaces 104A of the inner box 104 . Therefore, the vacuum heat insulating material 110 and the refrigerant piping 120 are pushed to the outer case 106 side. As a result, the outer case 106 is pushed by the refrigerant piping 120, and the outer surface of the outer case 106 is deformed to bulge outward.

In the refrigerator 2 according to the first embodiment of the present invention shown below, it is possible to solve the above-mentioned problems such as the reduction of the thermal insulation performance due to insufficient filling of the foamed heat insulating material 130, the problems due to the accumulation of air A, Problems such as deformation of the outer surface of the outer case 106 and the like.

(Refrigerator of the first embodiment)

FIG. 1 is a side view schematically showing a refrigerator 2 according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing a structure in which a buffer member 40 is arranged between the vacuum heat insulating material 10 and the refrigerant piping 20 in the refrigerator 2 shown in FIG. 1 .

Similar to FIG. 6 , FIGS. 1A-1D also show the following situation: the refrigerator 2 is turned sideways with the door side down, so as to inject liquid foam insulation between the outer box 6 and the inner box 4 of the refrigerator 2 Material 30. FIG. 1A shows the bottom surface of the refrigerator 2 in this state, and FIGS. 1B to 1D show the side surfaces of the refrigerator 2 . In each figure, the internal constituent members are shown in a perspective manner, and in particular, in FIGS. 1B to 1D , the vacuum heat insulating material 10 and the refrigerant arranged between the outer case 6 and the inner case 4 are shown. The piping 20 and the injected liquid foam heat insulating material 30 are shown colored gray.

1, also in the area between the outer box 6 and the inner box 4, the vacuum heat insulating material 10 is arrange|positioned from the center of the refrigerator 2 to the lower side (right side in the figure) in FIG. In the center area of the refrigerator 2, the refrigerant piping 20 and the vacuum heat insulating material 10 are arranged. Moreover, in the center area|region of the refrigerator 2, the injection port Q of the liquid foam heat insulating material 30 is provided. The liquid foam heat insulating material 30 is injected by the injection device P attached to the injection port Q. The region in which the refrigerant piping 20 and the vacuum heat insulating material 10 are arranged has a structure as shown in FIG. 2 .

As shown in FIG. 2 , the refrigerant pipe 20 is fixed in a state of being in contact with the inner surface 6A of the outer case 6 by the tape 22 . In the present embodiment, the buffer member 40 is arranged between the refrigerant piping 20 and the vacuum heat insulating material 10 . Due to the buffer member 40 , a space in which the liquid foam heat insulating material 30 can flow can be secured between the refrigerant piping 20 and the vacuum heat insulating material 10 .

Referring to FIGS. 1B to 1D showing the state in which the liquid foam heat insulating material 30 is injected, in the area on the upper side (left side in the drawing) of the vacuum heat insulating material 10, the buffer member 40 is also used for cooling. Since an inflow space exists between the agent piping 20 and the vacuum heat insulating material 10, the liquid foam heat insulating material 30 flows into the whole area|region in which the vacuum heat insulating material 10 is arrange|positioned, as indicated by the arrow. Therefore, as shown in FIG. 1D , the air accumulation A is not generated, and the foamed heat insulating material 30 is sufficiently filled in the entire area between the outer case 6 and the inner case 4 .

The liquid foam heat insulating material 30 is well balanced in the space between the inner surface 6A of the outer case 6 and the vacuum heat insulating material 10 and the space between the vacuum heat insulating material 10 and the inner surface 4A of the inner case 4 flow, and therefore, regions where the foamed insulating material 30 is unevenly filled are not created. Further, since the buffer member 40 is appropriately elastically deformed, the outer case 6 is not pushed by the refrigerant piping 20 as shown in FIG.

As described above, in the refrigerator 2 of the present embodiment, in the region where the refrigerant piping 20 and the vacuum heat insulating material 10 are arranged between the outer case 6 and the inner case 4, the inner surface 6A of the outer case 6 and the refrigerant The pipes 20 are connected, a buffer member 40 is arranged between the refrigerant pipes 20 and the vacuum heat insulating material 10 , and the foam heat insulating material 30 is sufficiently filled between the inner surface 6A of the outer case 6 and the vacuum heat insulating material 10 . in the space.

Thereby, it is possible to provide the refrigerator 2 in which the foamed heat insulating material 30 is sufficiently filled in the area where the refrigerant piping 20 and the vacuum heat insulating material 10 between the outer case 6 and the inner case 4 are arranged, without Deformation occurs on the outer surface of the outer case 6 .

In the present embodiment, the two buffer members 40 are arranged at the lowermost (right side in the figure) position in the refrigerant piping 20 , that is, the innermost position of the vacuum heat insulating material 10 , with a predetermined interval therebetween. s position. Thereby, a sufficient space for allowing the liquid foam heat insulating material 30 to flow can be secured between the two buffer members 40 according to the thickness of the buffer member 40 .

Thereby, a sufficient space in which the liquid foam heat insulating material 30 can flow can be secured between the two buffer members 40 .

In the present embodiment, the two buffer members 40 have the same shape, but the present invention is not limited to this, and buffer members 40 of different shapes may be arranged. In addition, the number of the buffer members 40 to be arranged is not limited to two, and three or more buffer members 40 may be arranged.

In the present embodiment, the buffer member 40 is formed of EPS (Expanded polystyrene). EPS has elasticity, good shock absorption, and good heat insulation. Thereby, a space can be reliably secured between the refrigerant piping 20 and the vacuum heat insulating material 10, the space serving as a flow path of the liquid foam heat insulating material 30, and, as a buffer material, it is possible to prevent the outer case 6 from being trapped. Concave and convex on the outer surface before it occurs.

However, the material of the buffer member 40 is not limited to EPS, and other arbitrary materials having elasticity and heat insulation properties, including extruded polystyrene foam (XPS), polyurethane foam, high-expanded polyethylene foam, and phenol foam can be used.

2, an example of the dimension of the structure between the outer case 6 and the inner case 4 in this embodiment is shown below. The distance T1 between the inner surface 6A of the outer case 6 and the inner surface 4A of the inner case 4 can be exemplified by 30 to 50 mm. As thickness T2 of the vacuum

heat insulating material

10, 10 to 20 mm can be illustrated. As the outer diameter T3 of the refrigerant piping 20, 3 to 10 mm can be exemplified. In this case, as the thickness dimension of the buffer member 40, 15 to 35 mm can be exemplified. As the thickness of the buffer member 40, it is preferable to have a thickness of at least about 10 to 20 mm even after the liquid foam heat insulating material 30 is filled and compressively deformed.

By employing such a thickness dimension of the buffer member 40 , even after elastic deformation, a space in which the liquid foam heat insulating material 30 can flow can be secured between the vacuum heat insulating material 10 and the refrigerant piping 20 .

Assuming that the buffer member 40 is arranged between the inner surface 6A of the outer case 6 and the vacuum heat insulating material 10, the thickness of the buffer member 40 becomes thick, and therefore, the elastic deformation becomes large, and there is a possibility that the refrigerant pipe 20 and the refrigerant pipe 20 cannot be connected to each other. A sufficient space is secured between the vacuum heat insulating materials 10 . On the contrary, in order to prevent this, when the elastic modulus of the buffer member 40 is too high (when too rigid), the outer surface of the outer case 6 may be pushed by the buffer member 40 and deformed to protrude outward.

Therefore, it can be said that, in order to secure a sufficient space between the refrigerant piping 20 and the vacuum heat insulating material 10 and not cause deformation in which the outer surface of the outer case 6 protrudes outward, it is preferable that the refrigerant piping 20 and the vacuum A buffer member 40 is arranged between the heat insulating materials 10 .

(Other examples of buffer members)

3A is a cross-sectional view schematically showing another embodiment 1 of the buffer member 40 disposed between the refrigerant piping 20 and the vacuum heat insulating material 10 . FIG. 3B is a perspective view schematically showing the buffer member 40 shown in FIG. 3A . 4A is a cross-sectional view schematically showing another embodiment 2 of the buffer member 40 disposed between the refrigerant piping 20 and the vacuum heat insulating material 10. FIG. 4B is a perspective view schematically showing the buffer member 40 shown in FIG. 4A .

In both the other Embodiments 1 and 2 of the buffer member 40 , the recessed portion 42 having a shape along the outer shape of the refrigerant pipe 20 is formed on the surface of the buffer member 40 in contact with the refrigerant pipe 20 . That is, it has the recessed part 42 which consists of a smooth curved surface which has an arc-shaped cross-sectional shape corresponding to the outer shape of the cylindrical refrigerant|coolant piping 20. As shown in FIG. Therefore, as shown in FIGS. 3A and 4A , the buffer member 40 can hold the refrigerant pipe 20 in such a manner that it bites, and the buffer member 40 can be prevented from slipping off the refrigerant pipe 20 . Thereby, the buffer member 40 can be stably arranged between the vacuum heat insulating material 10 and the refrigerant piping 20 .

In addition, in another embodiment 1, the part of the buffer member 40 in contact with the vacuum heat insulating material 10 is a plane, but in another embodiment 2, the part of the buffer member 40 in contact with the vacuum heat insulating material 10 has curved shape. In another embodiment 2, since the top of the curved convex shape of the buffer member 40 is in contact with the vacuum heat insulating material 10 , there is an advantage that the heat adhering to the surface of the vacuum heat insulating material 10 is not easily received. The influence of melt glue, etc.

(Refrigerator of the second embodiment)

FIG. 5A is a side view schematically showing the refrigerator 2 according to the second embodiment of the present invention. FIG. 5B is a side view schematically showing the flow of air remaining between the outer case 6 and the inner case 4 in the refrigerator 2 shown in FIG. 5A .

Similar to FIG. 1 , FIGS. 5A and 5B also show the following situation: the refrigerator 2 is turned sideways with the door side down, so as to inject liquid foam insulation between the outer box 6 and the inner box 4 of the refrigerator 2 material 30, and the side of the refrigerator 2 is shown. 1 , the vacuum heat insulating material 10 and the refrigerant piping 20 arranged between the outer case 6 and the inner case 4 are shown, and the injected liquid foam heat insulating material 30 is shown colored gray .

In the present embodiment, the vacuum heat insulating material 10 is arranged in the entire region between the outer case 6 and the inner case 4 . Therefore, the refrigerant piping 20 and the vacuum heat insulating material 10 are arranged in a wider area than the first embodiment shown in FIG. 1 . Moreover, in the upper side area|region (left side in the figure) of the refrigerator 2, the injection port Q of the liquid foam heat insulating material 30 is provided. The liquid foam heat insulating material 30 is injected by the injection device P attached to the injection port Q. Therefore, for example, in order to discharge the air in the region R farthest from the injection port Q on the right side in the figure from the injection port Q, it is necessary to ensure the flow path of the air reliably.

In the present embodiment, in the plan view of the outer case 6 and the inner case 4 as shown in FIG. 5A , the injection port Q of the liquid foam heat insulating material 30 and the vacuum heat insulating material 10 are arranged along the lines. The three buffer members 40 are arranged on the vacuum heat insulating material 10 and the refrigerant piping 20 in the direction in which the position R farthest from the injection port Q in the injection area of the provided liquid foam heat insulating material 30 is connected. set location.

Thereby, a space is reliably ensured between the vacuum heat insulating material 10 and the refrigerant piping 20 along the direction in which the buffer member 40 is arranged. That is, in the region surrounded by the one-dot chain line in FIG. 5A , a sufficient space is secured between the vacuum heat insulating material 10 and the refrigerant piping 20 .

Therefore, by injecting the liquid heat insulating foam material 30, the liquid heat insulating foam material 30 flows into the area of the air A existing between the outer case 6 and the inner case 4, as indicated by the arrow in FIG. 5B . As shown, the air can be pushed out in the direction connecting the farthest position R and the injection port Q to escape from the injection port Q to the outside. Thereby, the formation of the air accumulation A can be prevented beforehand.

Although the embodiments and embodiments of the present invention have been described, the disclosure can be changed in structural details, and the embodiments and embodiments can be implemented without departing from the scope and spirit of the claimed invention. Combination of elements, change of order, etc.

Claims

A refrigerator, characterized in that, comprising:

The refrigerator main body has an outer box and an inner box, and a storage area is arranged on the inner side of the inner box;

refrigerant piping, in which refrigerant flows, disposed between the outer case and the inner case;

a vacuum heat insulating material, arranged between the outer box and the inner box;

foam insulation material, filled between the outer box and the inner box;

as well as,

In a region where the refrigerant piping and the vacuum heat insulating material are arranged between the outer case and the inner case, the inner surface of the outer case is in contact with the refrigerant piping,

A buffer member is arranged between the refrigerant piping and the vacuum heat insulating material,

The foamed heat insulating material is filled in the space between the inner surface of the outer case and the vacuum heat insulating material.
The refrigerator according to claim 1, wherein the foamed heat insulating material is filled in a space between the vacuum heat insulating material and the inner surface of the inner box.
The refrigerator according to claim 1, wherein the buffer member is a material having elasticity and heat insulation.
The refrigerator according to claim 3, wherein the buffer member is made of EPS (Expanded

polystyrene/expanded polystyrene).
The refrigerator according to claim 1, wherein a recessed portion having a shape along the outer shape of the refrigerant pipe is formed on a surface of the buffer member in contact with the refrigerant pipe.
The refrigerator according to claim 5, wherein the outer shape of the refrigerant piping is cylindrical, the recess has a smooth curved surface, and the cross section of the curved surface is the same as that of the cylindrical refrigerant piping. Corresponds to the bow.
The refrigerator according to claim 5, wherein a portion of the buffer member in contact with the vacuum heat insulating material is a plane.
The refrigerator according to claim 5, wherein a portion of the buffer member that is in contact with the vacuum heat insulating material has a curved shape.
The refrigerator according to claim 1, wherein at least two of the buffer members are arranged at a predetermined interval so that the liquid foam heat insulating material is placed between the two buffer members. There is enough room for movement.
The refrigerator according to claim 9, wherein in the plan view of the outer case and the inner case, the buffer member is arranged in the direction connecting the injection port and the farthest position. The position where the vacuum heat insulating material and the refrigerant piping are arranged, the injection port is an injection port of the liquid foam heat insulating material, and the farthest position is the vacuum heat insulating material. The position farthest from the said injection port in the injection area|region of the said liquid foam heat insulating material arrange|positioned.