Low-temperature dehumidifier for refrigeration house

Abstract

The invention provides a low-temperature dehumidifier for a refrigeration house. The low-temperature dehumidifier for the refrigeration house comprises an indoor unit and a machine body. An air supplyopening of the machine body is provided with a centrifugal fan. An outlet pipe of a dehumidification reheater is sequentially connected with a filter, an electromagnetic valve and an expansion valve.An inlet of the expansion valve is connected with the electromagnetic valve, and an outlet of the expansion valve is connected with an evaporator. A defrosting reversing valve is a four-way valve, afirst outlet of the defrosting reversing valve is connected with an exhaust port of a vortex compressor, a second outlet of the defrosting reversing valve is connected with the dehumidification reheater, a third outlet of the dehumidification reheater is connected with an air return pipe of the evaporator, and a fourth outlet of the defrosting reversing valve is connected with an air inlet of thevortex compressor. One end of a high-pressure controller is connected with the defrosting reversing valve, and the other end of the high-pressure controller is connected with the vortex compressor. One end of a gas-liquid separator is connected with the vortex compressor, and the other end of the gas-liquid separator is connected with a low-pressure controller. The application range of the low-temperature dehumidifier is expanded, and the low-temperature dehumidifier can reliably run in the refrigeration house where the temperature ranges from 0 DEG C to 10 DEG C.

Description

technical field [0001] The invention belongs to a low-temperature dehumidifier, in particular to a low-temperature dehumidifier for cold storage. Background technique [0002] For general low-temperature dehumidification units, due to the problem of frosting on the evaporator, according to the national standard, it can only be applied to the working environment above 5°C, and the environment below this temperature cannot solve the problem of defrosting well. It will form a longer defrosting cycle and incomplete defrosting, which will cause the unit to fail to operate normally or even alarm to stop. Contents of the invention [0003] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a low-temperature dehumidifier for cold storage. [0004] The invention provides a low-temperature dehumidifier for cold storage, which includes an indoor unit and a body. The indoor unit includes a centrifugal fan, a dehumidificatio...

AI Technical Summary

Problems solved by technology

[0002] For general low-temperature dehumidification units, due to the problem of frosting on the evaporator, according to the national standard, it can only be applied to the working environment above 5°C, and the environment below this temperature cannot solve the problem of defrosting well. It will form a longer defrosting cycle and incomplete defrosting, which will cause the unit to fail to operate normally or even alarm to shut down

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