Micro-wave vacuum freeze-drying equipment

A technology of microwave vacuum and drying equipment, which is used in drying solid materials, lighting and heating equipment, and methods to dry solid materials, etc., can solve the problems of microwave shielding and vacuum sealing, deformation of thermally conductive plastics, and large heat loss. , to achieve the effect of avoiding the phenomenon of spark discharge, uniform energy distribution, and reducing the probability of microwave low-voltage discharge

Active Publication Date: 2011-09-28
CHINESE ACAD OF AGRI MECHANIZATION SCI +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] 1. The problem of microwave shielding and vacuum sealing has not been completely solved;
[0008] 2. Thermally conductive plastics may be deformed or melted due to prolonged exposure to microwaves;
[0009] 3. The use of heat-conducting glass, heat-conducting ceramics, etc., leads to excessive heat loss, which contradicts the purpose of saving energy by using microwave freeze-drying

Method used

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  • Micro-wave vacuum freeze-drying equipment

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Embodiment Construction

[0060] The present invention is based on the ordinary freeze-drying process technology, changing the way of providing the latent heat of sublimation, changing the infrared heating to microwave heating, so that the inside and outside of the material are heated at the same time, avoiding the heat transfer resistance in the freeze-drying process and reducing the heat loss. The sublimation efficiency is improved, the freeze-drying time is shortened, and the drying cost is reduced. The specific structure and principle of the present invention will be described in detail below.

[0061] see figure 2 , figure 2 It is a structural schematic diagram of an embodiment of the present invention. The microwave vacuum freeze-drying equipment of the present invention includes a microwave power source 10 and a microwave vacuum freeze-drying device 20, the microwave power source 10 is connected with the microwave vacuum freeze-drying device 20, and the microwave vacuum freeze-drying device ...

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Abstract

The invention discloses micro-wave vacuum freeze-drying equipment, which comprises a micro-wave power source and a micro-wave vacuum freeze-drying device, wherein the micro-wave power source is connected with the micro-wave vacuum freeze-drying device; the micro-wave vacuum freeze-drying device comprises a micro-wave resonant cavity and a vacuum bin; the vacuum bin is arranged in the micro-wave resonant cavity; and the vacuum bin can realize double functions of micro-wave screening and vacuum sealing to ensure freeze-drying conditions of micro-wave vacuum freeze-drying. In the invention, on the basis of the conventional freeze-drying technology, a providing mode of latent heat of sublimation is changed from infrared heating to micro-wave heating, so materials are heated internally and externally, heat transfer resistance in a freeze-drying process is avoided, energy loss is reduced, sublimation efficiency is improved, freeze-drying time is shortened, and drying cost is reduced.

Description

technical field [0001] The invention relates to a vacuum freeze-drying device, in particular to a microwave vacuum freeze-drying device. Background technique [0002] Vacuum freeze-drying technology originated in 1890, when Altmann used it for the production of biological specimens. During World War II, due to a large number of applications in the medical field, the freeze-drying technology was developed rapidly. From the 1950s to the 1970s, foreign research on freeze-drying technology, especially in the field of food, was very active. Freeze-dried food has shown its unique characteristics and functions as soon as it comes out. Because of its good quality, fast rehydration, excellent nutrition, flavor, color and appearance, it has a unique position in some special industries abroad, such as aviation, mountain climbing, exploration, field combat and other fields. After China entered the 1980s, the application of freeze-drying technology in the food industry has developed g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B7/00
Inventor 李树君曹有福杨炳南韩清华李凤成马季威尚增山朱卫华付大军张雷
Owner CHINESE ACAD OF AGRI MECHANIZATION SCI
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