Air conditioning system and control method

Abstract

The invention provides an air conditioning system and a control method. The air conditioning system comprises a circuit board, a double-stage compressor and a flash generator, wherein the double-stagecompressor is provided with a low-pressure inlet and a medium-pressure inlet, and an outlet of the flash generator communicates with the medium-pressure inlet. According to the air conditioning system and the control method, a heat dissipation assembly is arranged on the circuit board, cooling is carried out by further utilizing a refrigerant gravity liquid supply mode in the flash generator, a liquid refrigerant enters the inner side of the heat dissipation assembly for heat absorption through the flash generator, the refrigerant after heat absorption is changed into gas and flows back intothe flash generator, the gas-state refrigerant can also be used for supplementing the gas and increasing the enthalpy to the two-stage compressor, so that the energy efficiency of the system is improved; and when the heat dissipation assembly communicates with a heat exchange coil pipe, sealing circulation is formed between the heat dissipation assembly of the circuit board and the heat exchange coil pipe, heat of the circuit board can be transferred into the flash generator, namely, the heat of the circuit board can be recycled, so that the evaporation efficiency in the flash generator is improved, the exhaust volume of the flash generator is increased, and the energy efficiency of the system is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning equipment, in particular to an air conditioning system and a control method. Background technique [0002] The two-stage compressor unit can provide users with hot and cold water under a wide range of operating temperature conditions to meet the user's cooling and heating requirements. However, the unit runs for a long time, and the heat dissipation of the main board is large. If the temperature is not cooled in time, it will affect the main board. The stability and service life of the main board are currently mainly air-cooled, the air-cooled cooling effect is poor, and air ducts and fans need to be installed, the structure is more complicated, and the direct use of refrigerants to directly control the temperature of the main board will lead to compression The pressure ratio of the machine becomes larger, which increases the system load. Contents of the invention [0003] In order to ...

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Problems solved by technology

[0002] The two-stage compressor unit can provide users with hot and cold water under a wide range of operating temperature conditions to meet the user's cooling and heating requirements. However, the unit runs for a long time, and the heat dissipation of the main board is large. If the temperature is not cooled in time, it will affect the main board. The stability and service life of the main board are currently mainly air-cooled, the air-cooled cooling effect is poor, and air ducts and fans need to be installed, the structure is more complicated, and the direct use of refrigerants to directly control the temperature of the main board will lead to compression The pressure ratio of the machine becomes larger, which increases the system load

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