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Vacuum freeze-drying technological method

A process method and vacuum freeze-drying technology, applied in the field of freeze-drying technology, can solve the problems that the original flavor of food cannot be guaranteed, and can not meet the requirements of instant food, etc., and achieve the effects of increasing diversity, increasing scope, and reducing the difficulty of drying.

Inactive Publication Date: 2015-11-04
DANDONG JUNAO FOODSTUFF
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing food processing technology, the freeze-drying process is relatively primitive. During the freeze-drying process, the tissue composition of the food changes greatly, which cannot guarantee the original flavor of the food and cannot meet the requirements of instant food.

Method used

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Embodiment Construction

[0016] The dryer mainly includes: refrigeration system, heating system, vacuum system, and control system. During the entire material freeze-drying process, the moisture in the material is removed through the cooperation of the four major systems. The specific structure is as follows: figure 1 , figure 2 As shown, it includes a housing 1, the upper part of the housing 1 is provided with a heating box 2, the lower part of the heating box 2 is provided with a cold trap 3, and the lower side of the cold trap 3 is provided with a defrosting device 4; the heating box is set in half , the interior of the heating box is provided with a multi-layer heating grid 21, and the material box 5 is placed on the heating grid 21; the housing 1 is provided with a vacuum tube 6, and the vacuum tube 6 is connected to a vacuum pump.

[0017] The heating system includes: heating controller, cold water tank, hot water tank, circulation pump, connecting pipes, heating plate in the warehouse, tempera...

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Abstract

The invention discloses a vacuum freeze-drying technological method. The vacuum freeze-drying technological method includes the following steps of quick freezing of materials, precooling of a drying bin, warehousing of the materials, vacuumizing, drying and material discharging. The vacuum freeze-drying technological method has the advantages that a drying machine mainly comprises a refrigerating system, a heating system, a vacuum system and a control system, and the four systems are used in cooperation to remove water in the materials in the whole material freeze-drying process. According to a temperature curve of the method, temperature is increased rapidly at first, is maintained and then is gradually decreased and maintained repeatedly, in this way, water in the frozen materials is evaporated rapidly at first, and then is released gradually and slowly; the nutritional ingredients and microelements of freeze-dried materials are almost the same with fresh materials, the color, flavor and smell are changeless, and the method is environmentally friendly. The range of materials capable of being dried is greatly enlarged by means of the method, the drying difficulty is reduced, and thus the diversity of food options is improved for people.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a freeze-drying process. Background technique [0002] In the existing food processing technology, the freeze-drying process is relatively primitive. During the freeze-drying process, the tissue composition of the food changes greatly, which cannot guarantee the original flavor of the food and cannot meet the requirements of instant food. Contents of the invention [0003] In order to solve the problems of the technologies described above, the object of the present invention is to provide a vacuum freeze-drying process, and the specific technical scheme is as follows: [0004] A vacuum freeze-drying process, which is characterized in that it includes the following steps: including rapid freezing of materials, pre-cooling of drying bins, loading of materials into bins, vacuuming, drying, and blanking; [0005] The material quick-freezing step refers to freezing the mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B5/06
Inventor 伊才勇吕希华朱建旺
Owner DANDONG JUNAO FOODSTUFF
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