Natural cooling air-cooled chiller unit and relative method and device

Abstract

The invention discloses a natural cooling air-cooled chiller unit, a control method, a control device and an air-conditioner system of the chiller unit. The natural cooling air-cooled chiller unit comprises a compressor, a check valve, a condensing device, a variable frequency fan, a solenoid valve, an electronic expansion valve, a refrigerant pump and an evaporator, wherein the condensing device comprises an air-cooled condenser and the variable frequency fan; the output end of the compressor and the output end of the check valve are both connected with the input end of the air-cooled condenser; the output end of the air-cooled condenser is connected to the input end of the solenoid valve and the input end of the electronic expansion valve; the output end of the solenoid valve is connected to the input end of the refrigerant pump; the output end of the refrigerant pump and the output end of the electronic expansion valve are both connected to the input end of the evaporator; the output end of the evaporator is connected to the input end of the compressor and the input end of the check valve; in this way, a first refrigerating circulation and a second refrigerating circulation are formed. With the technical scheme provided by the invention, the accurate control on the refrigeration circulations is realized, and the reliability of the natural cooling air-cooled chiller unit is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, and more particularly, to a natural cooling air-cooled chiller unit and a control method thereof, a control device and an air conditioning system. Background technique [0002] Nowadays, most of the applications of air-cooled chillers require year-round cooling, such as computer rooms. In these occasions, not only cooling in summer, but also cooling in winter is required. However, the current ordinary air-cooled chillers often fail to start normally after the compressor shuts down due to excessive ambient temperature during winter cooling, which cannot meet the cooling needs of users. SUMMARY OF THE INVENTION [0003] In view of this, the present invention provides a natural cooling air-cooled chiller and its control method, control device and air conditioning system, which can not only meet the cooling needs of users in summer, but also meet the cooling needs of users in winter, and,...

AI Technical Summary

Problems solved by technology

However, the current ordinary air-cooled chillers often cause the compressor to fail to start normally after shutdown due to excessive ambient temperature during cooling in winter, which cannot meet the cooling needs of users.

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