Vacuum freeze-drying machine

Abstract

The invention relates to a vacuum freeze drier which comprises a freeze drying bin, a water catcher, a vacuum pump, a refrigeration compressor set consisting of a condensate storage tank, an oil separator and a double-stage type compressor, and a freezing evaporator arranged inside the freeze drying bin. As the vacuum freeze drier fully utilizes cold source and hot source of the refrigeration compressor set to cool and heat materials, the technical proposal has high utilization efficiency of energy and a reasonable structure, greatly improves the service life and use effect of the vacuum pump and the refrigeration compressor set in order that the power of the whole drier can be reduced by two thirds and the electricity consumption in the process of equipment operation is reduced by one half.

Description

technical field

[0001] The invention relates to a drying device, in particular to a vacuum freeze dryer. Background technique

[0002] In the process of freeze-drying, the quick-frozen material does not need to be melted by ice, but is directly sublimated from a solid state into water vapor to dehydrate it, thus maintaining the color, fragrance, nutritional components and appearance of the original fresh food to the greatest extent, and reproducing The water property is excellent, and it can be restored within a few seconds to a few minutes. Its color, taste, and shape are basically the same as the fresh product; due to thorough dehydration, the product can be stored at room temperature for more than 5 years without adding any preservatives, and the weight of the finished product Light, easy to carry and transport, has been recognized by consumers. On December 19, 2006, the China Intellectual Property Office applied for a patent titled "Vacuum Freeze-Drying Integrated Machi...

Examples

Embodiment Construction

[0010] Such as figure 1 As shown, among them, 1-heating tank, 2-valve VII, 3-oil separator I, 4-valve VI, 5-gas-liquid separator, 6-distributor I, 7-valve I, 8-refrigerated evaporator , 9-valve II, 10-distributor II, 11-vacuum pump, 12-water trap, 13-refrigerant liquid return heater, 14-valve III, 15-baffle, 16-valve IV, 17-valve V , 18-refrigeration compressor unit, 19-oil separator II, 20-condensation receiver.

[0011] The material to be dried is placed in the freezing evaporator through the material tray, and the material is frozen and heated by cold and heat transfer.

[0012] The material freezing process is as follows: At this time, valve I7, valve III14 and valve V17 are opened, valve II9, valve IV16, valve VI4 and valve VII2 are closed, and the refrigeration compressor unit is started. 1. Condensate the accumulator 20 and the valve I7 into the distributor I6, through the distributor I distribute the refrigerant evenly to the material placed on the refrigerated evapo...

technical field

[0001] The invention relates to a drying device, in particular to a vacuum freeze dryer. Background technique

[0002] In the process of freeze-drying, the quick-frozen material does not need to be melted by ice, but is directly sublimated from a solid state into water vapor to dehydrate it, thus maintaining the color, fragrance, nutritional components and appearance of the original fresh food to the greatest extent, and reproducing The water property is excellent, and it can be restored within a few seconds to a few minutes. Its color, taste, and shape are basically the same as the fresh product; due to thorough dehydration, the product can be stored at room temperature for more than 5 years without adding any preservatives, and the weight of the finished product Light, easy to carry and transport, has been recognized by consumers. On December 19, 2006, the China Intellectual Property Office applied for a patent titled "Vacuum Freeze-Drying Integrated Machi...

Examples

Embodiment Construction

[0010] Such as figure 1 As shown, among them, 1-heating tank, 2-valve VII, 3-oil separator I, 4-valve VI, 5-gas-liquid separator, 6-distributor I, 7-valve I, 8-refrigerated evaporator , 9-valve II, 10-distributor II, 11-vacuum pump, 12-water trap, 13-refrigerant liquid return heater, 14-valve III, 15-baffle, 16-valve IV, 17-valve V , 18-refrigeration compressor unit, 19-oil separator II, 20-condensation receiver.

[0011] The material to be dried is placed in the freezing evaporator through the material tray, and the material is frozen and heated by cold and heat transfer.

[0012] The material freezing process is as follows: At this time, valve I7, valve III14 and valve V17 are opened, valve II9, valve IV16, valve VI4 and valve VII2 are closed, and the refrigeration compressor unit is started. 1. Condensate the accumulator 20 and the valve I7 into the distributor I6, through the distributor I distribute the refrigerant evenly to the material placed on the refrigerated evapo...

Images