The working principle of Shanghai Birang Freezer and the advantages of computer display.
First, the working principle of the freeze dryer
1. The compressed air first enters the pre-cooler for preliminary cooling, and then introduces the gas-to-gas heat exchanger (regenerator), which is further cooled by the cooled exhaust air, and the condensed water is discharged outside the machine. The heat exchanger (evaporator) of the agent is further cooled by the oil refrigeration system.
2. After the compressed air is gradually cooled by the pre-cooler, the regenerator and the evaporator, the water vapor in the air condenses into liquid water beads, and the liquid water is separated by the action of the gas-liquid separator.
3. Another process in which the dry cooling air passing through the gas-liquid separator passes through the gas-to-gas heat exchanger (regenerator) is heated as it leaves the dryer.
Second, the advantages of the computer display:
1. Phase loss protection: When any phase or two phases of the three-phase power supply are disconnected, the control circuit automatically cuts off the power supply.
2. Reverse phase protection: When the phase sequence of the three-phase power supply is incorrect (resulting in the opposite direction of operation), it cannot be started.
3. High-voltage protection: When the cooling fan is bad, the heat dissipation <condenser> is blocked, the ambient temperature is too high, and when the water cooling or cooling water system is bad, the control circuit is automatic.
4. Low-pressure protection: When the refrigerant leaks, the machine freezes, the system expansion valve (capillary) and the filter are blocked, the control circuit automatically cuts off the power.
5. Overload protection: When the machine is in an overload state and the compressor or cooling fan is defective, the freeze dryer control circuit automatically cuts off the power.
6. Free choice of drainage: When operating in different working conditions, you can choose different interval time, drainage time and reduce gas consumption according to the amount of gas used.
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