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Copious cooling fast freezing infrared drying technology

An infrared drying technology, which is applied in the direction of drying solid materials, drying solid materials without heating, drying, etc., can solve the problems of slow cooling speed protein, raw material tissue cell destruction, active enzyme inactivation, etc., and achieve drying speed Fast, good drying effect, fast freezing effect

Inactive Publication Date: 2019-05-21
海尔生物医疗科技(成都)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of the slow freezing speed and low refrigeration efficiency of the Freon refrigeration method using the traditional phase change refrigeration principle in the vacuum freeze-drying method. On the one hand, the slow cooling speed will cause some proteins, especially the inactivation of active enzymes. On the other hand, due to the large ice crystal particles formed in the raw material cells and tissues, it will cause damage to the raw material tissue cells and cause loss, and a cryogenic quick-freezing infrared drying technology is provided

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0031] Freezing chamber, turbine, infrared vacuum freeze-drying chamber, cold trap, the turbine is in communication with the freezing chamber, and the infrared vacuum freeze-drying chamber uses infrared heating to heat materials. For animal Chinese medicinal materials, use compressed air of 0.7-0.9Mpa, the initial air expansion pressure ratio is 5-9, and rapidly cool animal Chinese medicinal materials to -60--120 degrees Celsius within 15-25 minutes to make the raw material tissue The liquid water in the structure solidifies quickly and becomes extremely tiny ice crystals; then, the material is sent to an infrared vacuum freeze-drying chamber for heating, so that the solid water in the material is sublimated into gaseous water, and the moisture content of the material is reduced to 0-10%.

Embodiment 2

[0033] Freezing chamber, turbine, infrared vacuum freeze-drying chamber, cold trap, the turbine is in communication with the freezing chamber, and the infrared vacuum freeze-drying chamber uses infrared heating to heat materials. For vegetables, fruits and fresh plant Chinese medicinal materials, use 0.6-0.9MPa compressed air, the initial air expansion pressure ratio is 5-8.5, and quickly cool the vegetables, fruits and fresh plant Chinese medicinal materials within 10-25 minutes. -60~-110 degrees Celsius, so that the liquid water in the raw material structure can be solidified quickly and become extremely tiny ice crystals; then, the material is sent to the infrared vacuum freeze drying chamber for heating, so that the solid water in the material is sublimated into gaseous water, so that The moisture content of the material is reduced to 0-10%.

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Abstract

The invention discloses a copious cooling fast freezing infrared drying technology and belongs to the technical field of chemical engineering and light industry machining. The copious cooling fast freezing infrared drying technology is characterized in that a gas turbine expanding refrigerating technology is adopted for performing copious cooling fast freezing on materials, compressed air at 0.5-0.9 Mpa is used, the initial air expanding pressure intensity ratio is 3-9, and fresh product vegetables and fruits and traditional Chinese medicinal materials except mineral drug are fast cooled to minus 20- minus 120 DEG C within 5-30 min, so that liquid water in a raw material organization structure fast solidifies, and becomes extremely micro ice crystal; and then, the materials are fed into aninfrared vacuum freezing drying bin to be heated, so that solid water in the materials sublimates into vaporous water, and the water content of the materials is lowered to 0-10%. The copious coolingfast freezing infrared drying technology has the characteristics of being high in freezing speed, low in cooling temperature, high in drying speed, uniform in material heating, uniform in material product quality and good in drying effect.

Description

technical field [0001] The invention belongs to the technical field of chemical and light industry processing, and further relates to a processing technology for drying fresh agricultural, animal husbandry and fishery products, fresh Chinese medicinal materials, fruits, vegetables and food to preserve all components. Background technique [0002] With the development of science and technology, the technical level of agriculture, animal husbandry and fishery has also made great progress, the output of related products has increased rapidly, and the quality has also been greatly improved; It is also becoming more common. However, the problems are becoming more and more prominent. For example, because fresh vegetables and fruits are still growing during the storage period, they are active plants, which are difficult to store for a long time and are perishable; at the same time, because they contain a lot of water, they increase the cost of storage, transportation and sales. co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B5/06
Inventor 唐文明
Owner 海尔生物医疗科技(成都)有限公司
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