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Vacuum heat insulating material and refrigerator

A technology of vacuum heat insulation materials and refrigerators, applied in the direction of heat insulation protection pipelines, heat exchange equipment, lighting and heating equipment, etc., can solve problems such as low heat insulation performance, and achieve the effect of expanding the installation area

Active Publication Date: 2015-03-18
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the vacuum insulation material is pasted on the outer box, and the space between the outer box and the inner box is filled with the foam insulation material and foamed, the foam insulation is formed in the part where the space between the outer box and the inner box is narrowed. The unfilled part of the material has poor thermal insulation performance

Method used

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  • Vacuum heat insulating material and refrigerator
  • Vacuum heat insulating material and refrigerator
  • Vacuum heat insulating material and refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] figure 1 It is a front view of the refrigerator which concerns on Example of this invention. figure 2 yes figure 1 A-A cutaway view.

[0030] exist figure 1 In the refrigerator main body 1, a refrigerator compartment 2, an ice-making compartment 3, a second freezer compartment 4, a first freezer compartment 5, and a vegetable compartment 6 arranged laterally side by side with the ice-maker compartment 3 are arranged in sequence from top to bottom as storage compartments. . Moreover, the doors 2a, 3a, 4a, 5a, 6a for closing the front opening are attached to each of these storage rooms, respectively. The left and right refrigerator compartment doors 2a that close the front opening of the refrigerator compartment 2 are French doors held by hinges 2b so as to be individually rotatable and openable. The other doors 3a, 4a, 5a, and 6a are pull-out doors that move in the front-rear direction and close the openings of the respective storage compartments.

[0031] exist ...

Embodiment 2

[0060] Image 6 It is a partial enlarged sectional view of the heat insulating wall of Example 2.

[0061] exist Image 6 In the space 18 formed between the outer box 14 and the inner box 17, the first vacuum insulation material 19 and the foam insulation material 21 are filled. This vacuum heat insulating material 19 is formed by putting the core material 22 and an adsorbent in a bag-shaped covering material 23 , vacuumizing the inside of the covering material 23 , and sealing it.

[0062] The fiber aggregate 22 is comprised by three layers of the 1st fiber aggregate 22a, the 2nd fiber aggregate 22b, and the 3rd fiber aggregate 22c. The second fiber aggregate 22b is longer than the first fiber aggregate 22a and the third fiber aggregate 22c, and the third fiber aggregate 22c is shorter than the first fiber aggregate 22a. The second groove 19b and the third groove 19c (as Figure 4 shown) is formed by pressing the evacuated first vacuum heat insulating material 19 with a m...

Embodiment 3

[0067] Figure 7 It is a partial enlarged sectional view of the heat insulating wall of Example 3.

[0068] exist Figure 7 In the space 18 formed between the outer box 14 and the inner box 17, the first vacuum insulation material 19 and the foam insulation material 21 are filled. This vacuum heat insulating material 19 is formed by putting the core material 22 and an adsorbent in a bag-shaped covering material 23 , vacuumizing the inside of the covering material 23 , and sealing it.

[0069] The fiber aggregate 22 is comprised by three layers of the 1st fiber aggregate 22a, the 2nd fiber aggregate 22b, and the 3rd fiber aggregate 22c. The first fiber aggregate 22a and the second fiber aggregate 22b have the same length and width. On the other hand, the third fiber aggregate 22c is shorter in width than the first and second fiber aggregates 22a and 22b. The second groove 19b and the third groove 19c (as Figure 4 shown) is formed by pressing the evacuated first vacuum hea...

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Abstract

The invention aims to provide a refrigerator which does not impede foaming of polyurethane foam and can improve coverage of a vacuum heat insulating material on a heat insulating wall. The refrigerator comprises a cooling pipe (15) on the inner wall surface of an outer box (14), and a foam heat insulating material (21) and a vacuum heat insulating material (19) both inside the space formed between the outer box and an inner box. The vacuum heat insulating material (19) comprises a core material including a plurality of layers of fiber aggregates (22), and a wrapping material (23) which holds the core material and is decompressed inside. The vacuum heat insulating material (19) comprises a first groove (19a) formed by changing stacking thickness of the fiber aggregates (22), and a second groove (19b) formed by pressing the wrapping material (23) which is decompressed inside. The first groove (19a) is located in a thin wall part of the foam heat insulating material (21) where the thickness is reduced.

Description

technical field [0001] The present invention relates to a vacuum heat insulating material and a refrigerator. Background technique [0002] As the prior art of the refrigerator equipped with the vacuum heat insulating material, for example, Unexamined-Japanese-Patent No. 2012-82954 (patent document 1), Japanese Patent No. 4545126 (patent document 2), etc. are mentioned. [0003] Patent Document 1 discloses a refrigerator equipped with a vacuum heat insulating material in which recesses for accommodating heat radiation pipes are formed by pressing with a mold. [0004] In addition, Patent Document 2 discloses a refrigerator in which a groove is provided in a vacuum heat insulating material facing a heat radiation pipe, and a heat radiation pipe is positioned in the groove. [0005] prior art literature [0006] patent documents [0007] Patent Document 1: Japanese Patent Laid-Open No. 2012-82954 [0008] Patent Document 2: Japanese Patent No. 4545126 [0009] The problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/065F25D23/06
CPCF16L59/029F16L59/065F25D23/066
Inventor 茂中启介堀井笃史
Owner HITACHI APPLIANCES INC
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