CN1126815A - Refrigerating bag - Google Patents

Abstract

The refregerating bag is used for cold dressing for local body temp reducing, hemorrhage and stopping pain or the temp-decreasing storage of medicine or food. Structurally, it has inside substances which can effect endothermal chemical reaction to refragerate. It has clamping fastener to separate the inner cavity into two parts, one for sodium thiosulphate and the other for ammonium nitrate. When used, the clamping fastener is released so as to make the chemical substances react, absorb heat and refrigerate.

Description

Refrigeration bag

The invention relates to a cold compress article for local temperature reduction, hemostasis and pain relief of human bodies, or an article with refrigeration and temperature reduction effects on precious medicines or foods, beverages and the like, in particular to a refrigeration bag.

When a person is ill, the body temperature is raised, the head needs to be cooled, local cold compress is adopted, or when a certain part of the body needs to be locally cold compressed due to injury, or when the person goes out for travel and plays, and carried food, beverage or medicine needs to be stored at low temperature, an ice bag is generally adopted. Placing ice below 0 deg.C in the ice bag. Before use, the ice bag is required to be placed in a refrigerating device below 0 ℃, otherwise, in the atmosphere, the temperature is generally above 0 ℃, so that the ice in the ice bag is melted into water, and the cold compress effect of the ice bag is lost. Therefore, the ice bag is not suitable for a long timeThe ice bag is inconvenient to use due to the fact that the ice bag is stored for a long time or transported for a long distance. In the patent application entitled multifunctional portable cooling bag, which is published in chinese utility model publication number 91223579.9 on 1/4/1992, filed on 26/91/8/10/1992, a cooling bag with refrigeration function is disclosed, which is divided into two small bags without communication by a separation band (card) at a proper position outside a soft and sealed bag, and the small bags are respectively sealed with a refrigerant: ammonium nitrate NH₄NO₃And sodium carbonate Na₂CO₃H₂O, absorbing heat and refrigerating after reaction to generate sodium nitrate NaNO₃And ammonium bicarbonate NH₄HCO₃. The main disadvantage of this technique is that ammonium bicarbonate is unstable and readily decomposes to give NH₃Ammonia gas has an unpleasant odor, and causes pollution to the atmosphere, which is also unacceptable to users.

The invention aims to overcome the defects in the prior art and provide a refrigeration bag which is convenient to store and transport for a long time, only comprises two components, is easy to obtain raw materials, low in price, free of odor pollution, safe, reliable and convenient to use.

The purpose of the invention can be realized by the following technical scheme: two substances which can absorb a great deal of heat through chemical reaction and generate good refrigeration effect are arranged in the refrigeration bag body, and a clamping chain is arranged in the refrigeration bag bodyThe inner cavity of the refrigerating bag body is divided into two parts of space, and sodium thiosulfate is filled in one part of space: na (Na)₂S₂O₃∶5H₂O, the other part is filled with ammonium nitrate NH₄HO₃。

The sodium thiosulfate and the ammonium nitrate in the refrigeration bag are mutually isolated in the refrigeration bag body, so that chemical reaction can not occur, the refrigeration bag can be stored for a long time, and the refrigeration bag is convenient to transport. When the refrigeration bag needs to be used, the clamp chain is twisted from the outside of the refrigeration bag, the clamp chain is loosened, ammonium nitrate and sodium thiosulfate are mixed, the two substances react together, and the ambient heat is absorbed to generate the refrigeration effect.

The weight ratio of ammonium nitrate to sodium thiosulfate is 1: 0.6-1.2, so that the obtained ammonium nitrate and sodium thiosulfate can completely react, and waste of raw materials is avoided. The optimal weight ratio of ammonium nitrate to sodium thiosulfate is 2: 3.

The 2 clamp chains which divide the refrigeration bag body into 2 parts are arranged in parallel in the refrigeration bag body, and the 2 clamp chains can ensure that the division is more reliable and firm. Is not easy to loosen automatically. 5-15 vertical stripes are arranged between 2 clamp chains. The two clamp chains are locked, the inner cavity of the bag body is cut into 2 parts, and sodium thiosulfate and ammonium nitrate are respectively filled into the spaces at the two sides of the two clamp chains in the refrigerating bag body. Because the middle of the device is provided with the locking clamping chain, the sodium thiosulfate and the ammonium nitrate are isolated and do not contact with each other, no chemical reaction occurs, and the device can be stored for a long time at normal temperature and is convenient to store and transport. When the refrigeration bag is needed, the clamping chain can be opened by twisting the clamping chain, so that two sides of the clamping chain are communicated, sodium thiosulfate and ammonium nitrate on two sides are mixed to generate chemical reaction, and a large amount of heat around is absorbed to generate refrigeration effect, and the refrigeration bag is cooled and is placed on a part of a human body needing cold compress as an ice bag or on food, medicines and other articles needing cooling. 5-15 protruding long strips are arranged between the two clamp chains, so that on one hand, when the clamp chains are rubbed, friction force can be increased, the clamp chains are conveniently rubbed open, on the other hand, the strength of the position can be increased, and substances in the refrigerating bag cannot overflow due to damage caused by rubbing. The structure of the clip chain is that a convex clip strip is arranged on one surface of two surfaces which are contacted in the refrigeration bag body, a clip groove is arranged on the corresponding position of the other surface, and the bag body can be made of soft, elastic and waterproof materials, such as plastics, rubber and the like. The clamping strips are embedded into the clamping grooves and are easy to clamp, the clamping strips are easy to open during twisting, and the clamping chains are not easy to pull open when two sides of the bag body are pulled or when the clamping chains in the middle have small tension due to the fact that the refrigerating materials are arranged on two sides of the clamping chains of the bag body because the bag body is soft and elastic. The clamping chain is prevented from loosening in the storage and transportation process, and the storage and transportation safety is guaranteed.

Inside the refrigeration bag bodyThe 2 clamping chains can reliably and firmly divide the bag body into 2 spaces, so that substances which are separately packaged in the spaces on the two sides can be stored for a long time without being mixed, the clamping chains can be conveniently twisted, the clamping chains are opened, the two sides of the clamping chains are communicated, the sodium thiosulfate and the ammonium nitrate on the two sides are mixed and react, the surrounding heat is absorbed, and the cooling bag is used as a refrigeration bag. If the two substances are slowly mixed, namely the two substances slowly react, the reaction lasts for a long time, the cold compress effect is weaker after the refrigeration, if the refrigeration temperature is required to be very low, the two substances can be fully mixed, the contact surface of the two substances is large, the chemical reaction speed is high, the heat absorption speed is high, the very low temperature can be quickly reached, through tests, in summer, the refrigeration bag can reach-6 ℃, the refrigeration bag is convenient to manufacture, the clamp chain can be clamped in advance, sodium thiosulfate and ammonium nitrate are respectively filled from the two sides of the clamp chain, and then the two sides are sealed in a heat sealing mode. The refrigerating bag has the advantages of simple raw material selection, only two components, easy obtaining, low price, no toxicity, no odor, safety and reliability, and the reaction product ammonium thiosulfate (NH)₄)S₂O₃The sodium nitrate can be used as fertilizer or industrial detergent, or used for washing sanitary equipment in hospital or household, and is non-toxic and odorless, and does not cause environmental pollution. The heat absorption refrigeration effect is good, and the temperature can reach below-6 ℃ in summer.

The advantage of this refrigeration bag is that the structure is ingenious, reasonable, and it is easy to make, and two kinds of refrigerant substances of choosing make the composition simple, only two kinds, and the raw materials is easy, and cheap, safe, reliable, can deposit and transport for a long time, and reaction product is odorless, pollution-free, and convenient to use can extensively be used for the cooling cold compress of human local cooling, medicine, food, beverage.

Embodiments are described with reference to the accompanying drawings:

figure 1 is a block diagram of a refrigeration bag,

figure 2 is an enlarged view of the structure of the clip chain,

the bag body (1) of the refrigeration bag is made of transparent plastic, 2 parallel arranged clamp chains (2) are arranged in the middle of the bag body (1), 15 vertical lines (3) are arranged in the middle of the clamp chains (2), the vertical lines (3) are raised vertical bars on the inner side of the bag body, the strength of the position can be enhanced, the friction force can be increased when the clamp chains are rubbed, the clamp chains are not easily broken by rubbing, and the clamp chains are formed by embedding the clamp bars (5) into clamp grooves (4). The internal space of the bag body is divided into 2 parts by the clamping chains, and sodium thiosulfate (6) is filled into one side of each clamping chain, and ammonium nitrate (7) is filled into the other side of each clamping chain.

Example 1, 1 part of ammonium nitrate, 225 g of ammonium nitrate, 0.6 part of sodium thiosulfate and 135 g of sodium thiosulfate are taken, a zipper (2) in the middle of a refrigeration bag body is locked in advance, then ammonium nitrate and thiosulfate are respectively arranged on two sides of the zipper from two sides of the refrigeration bag body (1), and then two side edges of the refrigeration bag body are subjected to heat sealing. When the refrigerating bag is used, the clamping chains (2) are twisted to enable the clamping strips (5) to be separated from the clamping grooves (4), the sodium thiosulfate (6) and the ammonium nitrate (7) in the refrigerating bag body are mixed, and the chemical reaction absorbs heat. The refrigerating bag is folded, a thermometer is clamped in the middle for measuring the temperature, the temperature is reduced to minus 5 ℃ to minus 1 ℃, and the temperature can be maintained for 1 hour. The ambient atmospheric temperature was 25 ℃.

Example 2: 1 part of 175 g of ammonium nitrate and 0.8 part of 150 g of sodium thiosulfate are taken and put into the two sides of the zipper in the refrigeration bag body (1) which is locked in advance by the zipper according to the same method of the embodiment 1. Then the two side edges of the refrigeration bag body (1) are heat sealed. Then twisting the clamp chain (2), loosening the clamp chain (2), mixing and reacting ammonium nitrate (7) and sodium thiosulfate (6), folding the refrigeration bag, clamping a thermometer for measuring temperature in the middle, observing the temperature change, and keeping the temperature at minus 7 ℃ to minus 1 ℃ for 1 hour, keeping the temperature at minus 1 ℃ to 5 ℃ for 1 hour, keeping the temperature at 5 ℃ to 10 ℃ for 1 hour, and keeping the ambient atmospheric temperature at 25 ℃.

Example 3: the same refrigeration bag body (1) is put into 1 part of 150 g of ammonium nitrate and 1.2 parts of 180 g of sodium thiosulfate according to the same method of the embodiment, and after the mixture is reacted, the temperature is measured to be minus 6.5 ℃ to minus 1 ℃ and kept for 1 hour; keeping the temperature of-1-5 ℃ for 1 hour; maintaining the temperature of 5-10 ℃ for 1.5 hours; the atmospheric temperature was 25 ℃.

Claims (5)

1. A refrigerating bag contains two kinds of substances capable of reacting chemicallyThe material capable of absorbing heat to produce refrigerating effect features that there are clamping chains in the refrigerating bag to separate the inner cavity of the refrigerating bag into two spaces, one of which contains sodium thiosulfate: na (Na)₂SO₃∶5H₂O, the other part of the space is filled with ammonium nitrate NH₄NO₃。

2. The refrigeration bag of claim 1, wherein the weight ratio of ammonium nitrate to sodium thiosulfate is 1: 0.6 to 1.2, preferably 2: 3.

3. A refrigeration bag as recited in claim 1 wherein said 2 part separating said refrigeration bag body has 2 parallel side chains, and 5 to 15 vertical lines are provided between said 2 side chains.

4. The refrigeration bag of claim 1 wherein the zipper is constructed so that one of the two surfaces in contact with the interior of the refrigeration bag body has a raised strip and the other surface has a corresponding slot.

5. A refrigeration bag as recited in claim 3 wherein the riser is a raised riser on the inside of the refrigeration bag body.

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