Wide temperature range type full fresh air temperature-adjustable dehumidifier

Abstract

The invention relates to a wide temperature range type full fresh air temperature-adjustable dehumidifier, which is characterized in that an evaporator is connected with a gas-liquid separator; the gas-liquid separator is connected with a stepless adjustable screw compressor; the stepless adjustable screw compressor is respectively connected with a hot air bypass valve, an electromagnetic valve and a water-cooling condenser; the water-cooling condenser is respectively connected with a flow regulating valve and an air-cooling condenser; the air-cooling condenser is connected with a check valve; the check valve is respectively connected with a flow regulating valve and a liquid reservoir; and the liquid reservoir is respectively connected with a liquid spray valve and a drying filter. The invention has the following technical effects: 1. the dehumidifier can reduce the effective exhaust of the compressor and absorb heat of liquid refrigerant in the evaporator to decrease the heat exchanging ability of the evaporator; 2.the opening degree of the flow regulating valve can be automatically adjusted according to the predetermined outlet air temperature; 3. high temperature air enters the inlet of the evaporator to melt away frost on the evaporator; 4. when fresh air load is high and the overheating of a motor of the compressor is caused, the liquid refrigerant is sprayed on the motor to cool the motor.

Description

technical field [0001] The invention relates to a fresh air temperature-regulating dehumidifier, in particular to a wide-temperature fresh air temperature-regulating dehumidifier. Background technique [0002] At present, fresh air temperature-adjustable dehumidifiers are usually used in conjunction with electronic expansion valves and stepless adjustable screw compressors to adapt to load changes caused by ambient temperature changes during fresh air operation; the outlet air temperature is adjusted through water flow regulating valves. Since the adjustment range of the steplessly adjustable screw compressor in this system is between 25% and 100%, when the fresh air load is lower than 25% of the compressor capacity due to low ambient temperature, the compressor will stop due to low suction pressure. As a result, the unit starts and stops frequently, which affects the control of the temperature and humidity of the outlet air, the working stability, and the life of the unit. ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a wide-temperature fresh air temperature-adjusting dehumidifier, which overcomes the narrow applicable ambient temperature range, low air temperature and humidity accuracy, unstable operation, and And can't defrost automatically

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