Cryogenic freezing dryer, also called the lyophilizer, ultra-low temperature freezer, how does it work?
What magic can be stored items magic change?
Let help you uncover the mysterious veil.
According to the principle of physics, the compressed air pressure in the case of the basic unchanged, by lowering the temperature of the compressed air to reduce water vapor content in the compressed air and excess of water vapor will condense into liquid.
Cryogenic freezing dryer is the use of this principle, dry compressed air through the cooling technology.
So as to make the ultra-low temperature freezing dryer can realize the function of the freeze drying.
the ultra-low temperature freezing dryer is the use of compression refrigeration way to form their own refrigeration system.
Cryogenic freezing dryer is usually a core part refrigeration compressor, evaporator, condenser, expansion valve and so on four basic parts.
Between these four components using pipeline connection, in turn to form a closed system.
Injection refrigerant, make its in cryogenic freezing dryer system constantly circulating repeatedly, so change state with compressed air and heat exchange with the cooling medium, the cryogenic freezing dryer can realize the function of freeze drying.
Refrigeration compressor low pressure in the evaporator (first
Low temperature)
Return refrigerant compressor cylinder, and then after compression,
industrial ice machine and steam temperature and pressure will increase at the same time;
After high pressure to be industrial ice machine of high temperature steam pressure, condenser in the condenser, a relatively low temperature of the cooling water or air with higher temperature refrigerant vapor and heat exchange, the quantity of heat of refrigerant was taken away by water or air to condense down, refrigerant vapor is changed, the gas into a liquid.
Then, this part of the condensed liquid to be transported to the ultra-low temperature freezing dryer expansion valve, after cryogenic freezing dryer of expansion valve throttling became low temperature low pressure liquid into the evaporator;
Low pressure low temperature in the evaporator refrigerant liquid absorption will be compressed air heat and boil (
Commonly known as & other;
Evaporation & throughout;
）
, but the ultra-low temperature freezing dryer in the compressed air after cooling condensation precipitation a large amount of liquid water;
in the evaporator steam was compressor suck, such refrigerants in refrigeration system after compression, condensation, throttle, evaporation such four process, thus completed a cycle.
In cryogenic freezing dryer refrigeration system, the evaporator is conveying equipment, cooling capacity in which refrigerant absorbs heat of compressed air, achieve the goal of dehydration.
original articles:
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