Z-shaped two-position four-way reversing valve

Abstract

A Z-shaped two-position four-way reversing valve comprises a Z-shaped valve element and a valve body, wherein the valve body is provided with a rectangular valve cavity; a low-pressure air inlet and a high-pressure air inlet which communicate with the rectangular valve cavity are formed in one side of the valve body; a first heat exchanger flow channel opening and a second heat exchanger flow channel opening which communicate with the rectangular valve cavity are formed in the other side of the valve body; the Z-shaped valve element is slidably arranged in the rectangular valve cavity and divides the rectangular valve cavity into a plurality of independent chambers, so that the high-pressure air inlet and the first heat exchanger flow channel opening are positioned in the same chamber, and the low-pressure air inlet and the second heat exchanger flow channel opening are positioned in the same chamber; and by sliding of the Z-shaped valve element, the high-pressure air inlet and the second heat exchanger flow channel opening are positioned in the same chamber, and the low-pressure air inlet and the first heat exchanger flow channel opening are positioned in the same chamber. The Z-shaped two-position four-way reversing valve has an all-metal structure. Compared with the traditional valve element with a rubber sliding block, the Z-shaped two-position four-way reversing valve is stable in switching, failure rate of switching can be reduced by 20%, the valve is not easily affected by environmental factors such as vibration and corrosion, and the service life is long.

Description

technical field [0001] The invention relates to a technology in the field of heat pump air conditioners, in particular to a zigzag two-position four-way reversing valve. Background technique [0002] In a heat pump air conditioning system, one heat exchanger needs to be used as an evaporator for cooling and a condenser for heating; the other heat exchanger needs to be used as a condenser for cooling and an evaporator for heating . In order to switch between cooling and heating functions, the heat pump air conditioning system needs to use a four-way valve to change the flow direction of the refrigerant in the system pipeline. One end of the four-way valve is connected with the two heat exchangers, and the other end is connected with the inlet and outlet of the compressor. Through the switching of the four-way valve, the heat exchanger used as the evaporator can be connected to the inlet of the compressor, and the heat exchanger used as the condenser can be connected to the ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at defects such as relatively complex pipeline design and difficulty in maintaining sealing performance in the prior art, the present invention proposes a Z-shaped two-position four-way reversing valve, which adopts an all-metal structure, and compared with the traditional rubber slider spool, the switching Stable, the switching failure rate can be reduced by 20%, and it is not easily affected by environmental factors such as vibration and corrosion, and has a long service life

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