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Cold-storage material, cold-storage pack, and cold-reserving box

A technology of cold storage and supercooling, which can be used in household refrigeration devices, lighting and heating equipment, materials for heat exchange, etc., and can solve problems such as short duration.

Inactive Publication Date: 2002-04-03
水谷 耕治 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dry ice volatilizes at extremely low temperatures and can release carbon dioxide gas for sublimation in a short period of time, so the duration is very short

Method used

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  • Cold-storage material, cold-storage pack, and cold-reserving box
  • Cold-storage material, cold-storage pack, and cold-reserving box
  • Cold-storage material, cold-storage pack, and cold-reserving box

Examples

Experimental program
Comparison scheme
Effect test

no. 2 approach 〕

[0035] The cold storage agent of the second embodiment is in the aqueous solution of 20% by weight of sodium chloride, every 100 parts by weight of the aqueous solution adds 4 parts by weight of the PNVA cold storage duration extension agent, and every 100 parts by weight of the aqueous solution adds 3 parts by weight of sodium borate Anti-supercooling agent. In addition, a simple 20% by weight aqueous solution of sodium chloride was prepared as the cooling agent of Comparative Example ②, and dry ice was prepared as the cooling agent of Comparative Example ③.

[0036] The cold storage agent of the second embodiment is injected into the flat bag 1 made of resin as shown in the figure, and each bag is injected with about 1kg, put into the cold storage for cooling, and a total of 10 cold storage bags 1 (10kg in total) are equipped with the cold storage agent. )Such as figure 1 As shown, it is packed into the cold storage box 2 made of foamed styrene resin for cold storage transp...

no. 3 approach 〕

[0041] The cold storage agent of the third embodiment adds 30 parts by weight of metal salt ammonium sulfate, 20 parts by weight of calcium chloride, 5 parts by weight of magnesium chloride and 3 parts by weight of zinc oxide relative to 100 parts by weight of water, and adds 3 parts by weight of cold storage duration extension agent PNVA, Supercooling preventing agent sodium borate 5 parts by weight.

[0042] The cold storage agent of the third embodiment is injected into small bags (not shown in the figure), 1 / 3 kg is injected into each bag, and cooled for 20 hours in a -35° C. freezer to make it solidify. Three such bags (1 kg in total) that have been injected with the cooling agent are put into a cold storage box (not shown) with an internal volume of about 70 liters made of foamed styrene for cold storage transportation, and placed on the inner bottom surface.

[0043]Place the cold storage box added with the cold storage agent of the third embodiment in a room with a tem...

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Abstract

A cold-storage material obtained by adding 4 parts by weight of poly(N-vinylacetamide) as a cold-storage-prolonging agent to 100 parts by weight of 20 wt.% aqueous sodium chloride solution and adding thereto sodium borate as a supercooling inhibitor in an amount of 3 parts by weight per 100 parts by weight of the aqueous solution was packed into a pack (1) and cooled in a refrigerator to solidify it. This pack (1) containing the cold-storage material was placed in a cold-reserving box (2), which was examined for temperature change. As a result, it was ascertained that the cold-storage retention time was prolonged. Thus, a cold-storage material can be provided which has a prolonged cold-storage retention time and is suitable for use in cold reservation for long-term transportation, storage, display, etc.

Description

technical field [0001] The present invention relates to the use when carrying out long-term cold transportation, cold storage, cold display, etc. for various items that must be refrigerated or frozen (such as food, beverages, chemicals, pharmaceuticals, blood, internal organs, animals and plants), etc. Cold storage agent, cold storage bag and cold storage box. Background technique [0002] In the past, cold storage agents were generally made of sodium chloride aqueous solution and dry ice. But the cold storage agent that is made by sodium chloride aqueous solution has following two problems: [0003] (a) Cooling duration is shorter. [0004] As explained in the results of Comparative Example ② in Figure 4 below, since the cooling performance at the beginning of use disappears after 12 hours, it cannot be used for long-term cold transportation, cold storage, cold display, etc. [0005] (b) Supercooling occurs. [0006] The so-called supercooling phenomenon refers to that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCY02E60/147C09K5/066Y02E60/14F25D3/00F25D3/08F25D2303/082F25D2303/085
Inventor 水谷耕治
Owner 水谷 耕治
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