GLZY-2 Freeze drying machine & LyophilizerVacuum freeze drying
machine is machine which providing the frozen and sublimation
environment in mechanical way. First we put the products on the
shelf which maintain plane and clean in the seatant chamber. All
the parts connecting with products are composed of antirust. No
powder and no hazard material transmit the heat equally in order to
ensure the transproducts got the same temperature at the sme time.
The refrigerating system can cool the themal oil equality. When the
temperature declines to the euteclic temperature, the system will
switch to the condensing coiled pipe to cool the temperature.
Condesing coiled pipe is to cause the pressure difference between
the chamber and condenser. We adopt the Freon to directly evaporate
and reach the lower temperature than the shelf, which can make the
chamber and condenser have the temperature difference. Condenser
had another function to protect the vacuum system. If the great
amount steam directly sublimate into the vacuum system or vacuum
pump, it will spoil the vacuum pump and vacuum parts. When the
condenser declines to the required temperature, the vacuum system
will start working for the chamber and the condenser. When the
products reach the required pressure, electric heating in the
circulating system will start heating through the thermal oil. The
thermal oil will exchange the heat through the shell to make the
products reach the purpose for heating sublimation. Drying in the
freeze drying process should be divided into two parts: the 1set
stage drying is called sublimation drying, which task is to remove
the crystal from the product. Of course, it will also remove some
water from the products. The 2nd stage drying is called desorption
drying, which task is to remove the remain water from the products,
that can make the products storable. When the products finish
drying and the vacuum degree reach the required control scope of
the customer, a batch of qualified freeze drying products can be
finished to take out from the chamber./* March 10, 2023 17:59:20
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