Micro-wave vacuum freeze-drying equipment

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...

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

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