Refrigerant switching valve and air conditioning refrigeration system

By designing a refrigerant switching valve and optimizing its structure and operating mode switching, the complexity caused by the large number of valves in the air conditioning system was solved. This resulted in simplified connections, increased integration, improved defrosting efficiency, and reduced compressor energy consumption.

CN122774493APending Publication Date: 2026-09-18ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO LTD SHAOXING CITY
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Patent Information

Application Number
CN202510867000.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2025-03-18
Filing Date
2025-06-25
Publication Date
2026-09-18

AI Technical Summary

Technical Problem

In existing air conditioning systems, multiple valves are required to achieve various functions, resulting in complex system piping connections. How to achieve the corresponding functions without increasing complexity is a topic of concern for technicians.

Method used

A refrigerant switching valve is designed. By optimizing its structure, it can replace multiple valve components, improve integration, and simplify pipeline connections and control logic. The valve core rotates circumferentially along the valve seat to switch working modes, thereby achieving multiple functions.

Benefits of technology

The pipeline connection structure and control logic between valves have been simplified, the integration of valves has been improved, and the defrosting efficiency has been increased in defrosting mode, reducing the energy consumption of the compressor.

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Abstract

This application discloses a refrigerant switching valve and an air conditioning refrigeration system. The refrigerant switching valve includes a first operating mode and a second operating mode. The valve core can rotate circumferentially along the valve seat to switch between the first and second operating modes. The air conditioning refrigeration system includes a heating mode and a defrosting mode. In the heating mode, the refrigerant switching valve is in the first operating mode, with the inlet port and the first port connected through the valve cavity, and the third and fourth ports connected through a connecting channel. The valve core blocks the fifth port. In the defrosting mode, the refrigerant switching valve is in the second operating mode, with the inlet port and the second port connected through the valve cavity, and the fourth and fifth ports connected through a connecting channel. The valve core blocks the third port. In the refrigerant switching valve of this application, by optimizing the structural design of the refrigerant switching valve, it can replace multiple valve components in the prior art, improving the integration of the valve components, while simplifying the pipeline connection structure between the valve components and the control logic of each valve component.
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