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Chemical refrigerant and application thereof and product

A refrigerant and chemical technology, applied in the field of medical products, can solve the problems of easy melting, failure, low melting point of sodium carbonate and sodium sulfate, etc., and achieve the effect of long cooling time, simple and convenient use, and avoiding moisture

Pending Publication Date: 2020-12-01
GUIZHOU PROVINCIAL PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, nitrates are flammable and explosive, ammonium bisulfate is corrosive, sodium carbonate and sodium sulfate have low melting points, and are easy to melt and fail in summer high temperature environment

Method used

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  • Chemical refrigerant and application thereof and product

Examples

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Effect test

Embodiment 2

[0013] Embodiment 2 of the present invention: chemical refrigerant, comprise 25g ammonium chloride, 50g urea and 100g water, before not using, carry out independent packaging with ammonium chloride and urea as solid reactant and water, make ammonium chloride and urea Urea does not come into contact with water. And prepared into a medical cooling patch, the structure of the medical cooling patch is to include a packaging bag 1 filled with the above-mentioned quality of ammonium chloride and urea in the packaging bag 1, and put the above-mentioned total amount of water into the inner bag 2, so that The reactant in the packaging bag 1 fixes the inner bag 2 in the packaging bag 1 . When in use, the packaging bag 1 is pressurized vigorously, and the granular reactant will burst the inner bag 2, so that the reactant contacts with water to generate an endothermic reaction. The refrigerant in Example 2 is used at an ambient temperature of 17°C, its temperature drops to 0°C in about 3...

Embodiment 3

[0014] Embodiment 3 of the present invention: chemical refrigerant, comprise 50g ammonium chloride, 100g urea and 100g water, before not using, carry out independent packaging with ammonium chloride and urea as solid reactant and water, make ammonium chloride and urea Urea does not come into contact with water. And prepared into a medical cooling patch, the structure of the medical cooling patch is to include a packaging bag 1 filled with the above-mentioned quality of ammonium chloride and urea in the packaging bag 1, and put the above-mentioned total amount of water into the inner bag 2, so that The reactant in the packaging bag 1 fixes the inner bag 2 in the packaging bag 1 . When in use, the packaging bag 1 is pressurized vigorously, and the granular reactant will burst the inner bag 2, so that the reactant contacts with water to generate an endothermic reaction. The refrigerant in Example 3 is used at an ambient temperature of 22°C, its temperature drops to 0°C in about ...

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Abstract

The invention discloses a chemical refrigerant and application thereof and a product. Ammonium chloride and urea are used as reactants; after water is added into ammonium chloride and urea, a reactionis carried out immediately, so the temperature of the chemical refrigerant can be reduced to 0 DEG C within about 30 seconds, can reach the lowest temperature of -8 DEG C within about 100 seconds andis gradually increased to about 10 DEG C within 1-2 hours; and the cooling and low-temperature maintaining effects of chemical refrigerant are very ideal, so the chemical refrigerant is particularlysuitable for medical cooling. An outer-layer bag is filled with the reactants, and an inner-layer bag is filled with water; during use, the outer-layer bag only needs to be held forcibly so as to extrude and break the inner-layer bag, so the dissolution reactant and the refrigeration reactants are combined to generate a dissolution endothermic reaction, the purpose of refrigeration is achieved, and the use of the chemical refrigerant is easy and convenient. The chemical refrigerant of the invention has the advantages of high heat absorption capacity, no explosion hazard, small refrigeration temperature fluctuation range, long refrigeration time, and usage of easily-available and cheap materials.

Description

technical field [0001] The invention relates to the technical field of medical products, in particular to a chemical refrigerant and its application and product. Background technique [0002] At present, in the fields of medical treatment, scientific experiments, tourism, outdoor heatstroke prevention and food preservation, most of the cooling bags used have gel or water built in, and the entire ice bag must be placed in the refrigerator to freeze the gel in the cooling bag. Or the cooling effect of water is achieved, which is inefficient and inconvenient to carry and store. Chemical refrigerants and their cooling bags are very popular because of their good cooling effect and can be used at any time. The cooling principle is to mix the cooling reactant and the dissolving reactant to produce a dissolution endothermic reaction to cool. Patent CN 202235884U and other relevant reports all use ammonium nitrate, sodium nitrate, potassium nitrate, and ammonium bisulfate as refrige...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06A61F7/02
CPCA61F7/02C09K5/066
Inventor 郭涛王慧韩志王远铖王志苗
Owner GUIZHOU PROVINCIAL PEOPLES HOSPITAL
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