Air conditioning system and air conditioning system control method

By introducing a split-type finned heat exchanger and compressor heat dissipation module into the air conditioning system and using an electronic expansion valve to control the refrigerant flow, the system pressure loss and liquid slugging problems caused by refrigerant throttling are solved, thereby improving the operating efficiency and reliability of the air conditioning system.

CN122170479APending Publication Date: 2026-06-09TCL AIR CONDITIONER ZHONGSHAN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TCL AIR CONDITIONER ZHONGSHAN CO LTD
Filing Date
2026-02-11
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The existing modular hot water system has its refrigerant heat dissipation module installed on the main circuit of the system, which causes refrigerant throttling, resulting in system pressure loss and a gas-liquid two-phase state, affecting the efficiency of the plate heat exchanger and the reliability of the compressor.

Method used

By introducing a split-type finned heat exchanger and a compressor heat dissipation module into the air conditioning system, and using an electronic expansion valve to control the refrigerant flow, the main refrigerant is prevented from being throttled in the compressor heat dissipation module. Combined with multi-sensor collaborative control, the valve opening of the electronic expansion valve is adjusted to prevent liquid slugging.

Benefits of technology

It reduces system pressure loss, improves the efficiency of plate heat exchangers and the operational reliability of air conditioning systems, and prevents liquid slugging.

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Abstract

This application relates to an air conditioning system and an air conditioning system control method. The air conditioning system includes an outdoor unit, a multi-split indoor unit, and a hydraulic module. In the outdoor unit, a compressor is connected to a plate heat exchanger, a finned heat exchanger is connected to the first end of a first electronic expansion valve and the plate heat exchanger, and the second end of the first electronic expansion valve is connected to a compressor cooling module. The compressor cooling module is also connected to a first four-way valve and a second four-way valve. The multi-split indoor unit includes at least two indoor units, the first end of which is connected to the plate heat exchanger, and the second end of which is connected to the first four-way valve. The first end of the hydraulic module is connected to the plate heat exchanger, the second end of which is connected to the first four-way valve, and the third end of which is connected to the finned heat exchanger. Thus, the main refrigerant is transferred to the plate heat exchanger through the finned heat exchanger, while the main refrigerant does not flow through the compressor cooling module, thereby reducing system pressure loss and improving the efficiency of the plate heat exchanger.
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