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Recyclable food phase transition heating bag

A phase change heater and heating bag technology, applied in food heating containers, packaged food, sustainable manufacturing/processing, etc., can solve the problems of irritating gas generation, unsafe, non-reusable, etc., to reduce the probability of discovery , the effect of reducing temperature and simple structure

Inactive Publication Date: 2015-09-02
YUNNAN RUIWOSI NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of using exothermic chemical reaction as a heat source are short duration, local overheating (local temperature exceeds 150°C), irritating gas generation, unsafe, short shelf life, non-reusable, and easy to be detected by infrared detectors ( external temperature exceeds 90°C), etc.

Method used

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  • Recyclable food phase transition heating bag
  • Recyclable food phase transition heating bag
  • Recyclable food phase transition heating bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The phase change temperature of the phase change material used in this embodiment is 40° C., and the heating power source is a 12V storage battery.

[0021] The implementation process of the present embodiment is: encapsulating 300 grams of cooled boiled rice in the bag, the outside of the rice encapsulation bag ( figure 2 Curve 1), inside the rice ( figure 2 curve 2), and the outside of the insulated bag ( figure 2 Curve 3) Place three temperature probes to test the temperature change curve.

[0022] It can be seen from the curve change that when the heating time is 90 minutes, the internal temperature of the rice can reach 70°C, and the temperature outside the heat-insulating bag is only 43°C.

Embodiment 2

[0024] The phase change temperature of the phase change material used in this embodiment is 45° C., and the heating power is a 12V external power supply.

[0025] The implementation process of the present embodiment is: encapsulating 300 grams of cooled egg fried rice in a bag, and the outside of the egg fried rice packaging bag ( image 3 Curve 1), inside the egg fried rice ( image 3 curve 2), and the outside of the insulated bag ( image 3 Curve 3) Place three temperature probes to test the temperature change curve.

[0026] It can be seen from the change of the curve that when the heating time is 60 minutes, the temperature inside the egg and rice can reach 66°C, and the temperature outside the heat-insulating bag is only 46°C. At the same time, it can keep the food above 45°C for about 3 hours.

Embodiment 3

[0028] The phase change temperature of the phase change material used in this embodiment is 43° C., and the power source for heating is a 24V storage battery.

[0029] The implementation process of the present embodiment is: encapsulating 400 grams of military convenience food in the bag, the outside of the food packaging bag ( Figure 4 curve 1), the interior of the food ( Figure 4 curve 2), and the outside of the insulated bag ( Figure 4 Curve 3) Place three temperature probes to test the temperature change curve.

[0030] It can be seen from the change of the curve that when the heating time is 45 minutes, the temperature inside the food can reach 58°C, and the temperature outside the heat-insulating bag is only 47°C. At the same time, it can keep the food above 45°C for about 4 hours.

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Abstract

The invention discloses a recyclable food phase transition heating bag comprising an insulation and thermal membrane 1, a phase transition heater 2, a charging power supply 3, a switch 4, a charging port 5, and a seal port 6. The heating bag herein has the advantages of simple structure, recyclable usage, even heating, warmth-keeping, no need of supplementing exciting agents, no generation of gas, and no generation of environmental contamination. The heating bag herein effectively reduces the temperature outside the food bag and also the chances of being detected by an infrared detector.

Description

technical field [0001] The invention relates to a food phase change heating bag. Background technique [0002] When it comes to outdoor activities, such as outdoor sports, field army operations, etc., self-heating food can be heated conveniently and safely when it is inconvenient or forbidden to use open flames due to adverse weather conditions such as strong winds, dust, rain, snow, and low temperature edible. [0003] Self-heating food usually consists of three parts: heat source, activator, food bag. The heat source may include aluminum powder, iron powder, quicklime and the like. However, the disadvantages of using chemical reaction heat as a heat source are short duration, local overheating (local temperature exceeds 150°C), irritating gas generation, unsafe, short shelf life, non-reusable, and easy to be detected by infrared detectors ( external temperature exceeds 90°C), etc. Contents of the invention [0004] The object of the present invention is to address th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D81/34
CPCY02W30/80
Inventor 陈人杰
Owner YUNNAN RUIWOSI NEW ENERGY TECH
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