Vacuum insulation and insulation box using it

A technology of vacuum heat insulation and heat insulation box, which is applied in the direction of protecting pipes, applications, and household appliances through heat insulation, which can solve the problems of low quality of recycled products and insufficient crushing of long-fiber non-woven fabrics, so as to improve the handling ability. Effect

Active Publication Date: 2016-01-06
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is due to the fact that the crushing device for the insulation box of the refrigerator in the current recycling center is designed and manufactured on the premise that the insulation box of the urethane insulation material is only used in the past, so there are resins such as polyester with toughness and flexibility. Insufficient shredding of long-fiber non-woven fabrics
As a result, the quality of recyclables decreases

Method used

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  • Vacuum insulation and insulation box using it
  • Vacuum insulation and insulation box using it
  • Vacuum insulation and insulation box using it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0049] In explaining the vacuum heat insulating material of Embodiment 1 of the present invention figure 1 , figure 2 Among them, the vacuum heat insulating material 1 is composed of a bag-shaped gas-barrier container 2 having air-blocking properties (hereinafter referred to as an outer cover), a core material 3 and an adsorbent 4 enclosed in the outer cover 2 . The adsorbent 4 is a moisture adsorbent or a gas adsorbent, and adsorbs moisture in the exterior material 2 that causes a decrease in thermal insulation performance.

[0050] Out of the four sides of the outer cover 2, three sides other than the opening 2a are sealed in advance by heat sealing, and the core material 3 is inserted into the outer cover 2 from the opening 2a as shown by arrow a, and the core material 3 is enclosed in the outer cover. 2, the inside of the exterior material 2 is decompressed to a predetermined degree of vacuum, and then the opening 2a is sealed by heat sealing, whereby the vacuum heat ins...

Embodiment 1

[0122] The processed portion 9a of the perforation 9 of the core material 3 of the vacuum heat insulating material 1 of Example 1 is based on Figure 11 In the processed part shown in Specification Example 4, the length of the processed part 9a is 3mm, the length of the non-processed part 9b is 1mm, the processed part 9a is a complete cut through the slit, and the ratio of the processed part of the perforation 9 (the processed part 9a to The ratio of the total length of the processed part 9a and the non-processed part 9b) was 75%.

Embodiment 2

[0123] The processing portion 9a of the perforation 9 of the core material 3 of embodiment 2 is the same specification as the case of embodiment 1, the processing portion 9a is a complete cut, and its length is 4mm, the length of the non-processing portion 9b is 2mm, and the processing portion ratio is 67%. Comparative example 1 has the same specifications, the length of the processed part 9a is 8mm, the length of the non-processed part 9b is 2mm, and the processing ratio is 83%. Both are 3mm, and the processing portion ratio is 50%.

[0124] In the core material 3 of Examples 1 and 2, as shown in Table 1, the lamination workability in the lamination process and the crushability in the recycling center were good.

[0125] On the other hand, as shown in Table 1, the core material 3 of Comparative Example 1 had no problem with the crushability, but the nonwoven fabric 6 was torn during the lamination process. It is considered that this is because the nonwoven fabric 6 cannot w...

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Abstract

A vacuum heat insulator (1) which comprises a core material (1) that is constituted of a stack of a plurality of sheet-shaped fibrous masses (3a) and a covering material (2) with which the core material (1) is covered and in which the internal pressure has been reduced, wherein the sheet-shaped fibrous masses (3a) of the core material (3) each have, formed therein, perforations (9) that each consist of uncut parts (9b) consecutively alternating with slit-shaped cut parts (9a). When products to which the vacuum heat insulator was applied are recycled, the products hence have enhanced crushability and the core material (3) of the vacuum heat insulator (1) does not get entangled with iron scraps, etc. which are valuables. The recycle characteristics can be improved thereby. Furthermore, the core material (3) is prevented from becoming loose during production and the productivity also can be improved.

Description

technical field [0001] The present invention relates to a vacuum heat insulating material and a heat insulating box such as a refrigerator using the same. Background technique [0002] Conventionally, urethane foams have been used as heat insulating materials for heat insulating boxes such as refrigerators, for example. However, in recent years, due to the market demand for energy saving, less space and larger capacity, it has become the mainstream to embed vacuum insulation parts with better heat insulation performance than urethane foam and use them together in urethane foam. The vacuum heat insulating material is a vacuum heat insulating material used for heat insulating boxes of cold and hot equipment such as heat preservation boxes, vehicle air conditioners, and water heaters in addition to refrigerators. [0003] Vacuum heat insulation materials are constructed by inserting powder, foam, fiber, etc. as a core material into an outer covering made of plastic laminated f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L59/06F25D23/06
CPCF16L59/065F16L59/026
Inventor 岩田修一野村京子中野秀明筱木俊雄高木司安孙子尚平难波章弘
Owner MITSUBISHI ELECTRIC CORP
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