A four-way reversing valve and an outdoor unit of an air-conditioning system

Abstract

Embodiments of the present invention provide a four-way reversing valve and an outdoor unit of an air-conditioning system, which relate to the field of air-conditioning, can reduce the noise generated by the piston hitting the inner wall, and prolong the service life of the four-way reversing valve. The specific plan is: the four-way reversing valve includes a piston arranged in the inner cavity, a condenser connecting pipe, an evaporator connecting pipe, an exhaust connecting pipe and a suction connecting pipe arranged in the outer shell and communicating with the inner cavity. The reversing valve includes a first shock absorber, one end of the first shock absorber is fixed to the first end of the inner cavity, and the other end of the first shock absorber is suspended, when the piston moves toward the first end of the inner cavity When the direction of the end continues to slide, the piston compresses the suspended end of the first shock absorber. The invention is used in the manufacture of a four-way reversing valve and an outdoor unit of an air-conditioning system.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a four-way reversing valve and an outdoor unit of an air conditioning system. Background technique [0002] The air conditioning system includes an indoor unit and an outdoor unit. The outdoor unit controls the flow direction of the refrigerant through a four-way reversing valve to realize switching of the working mode of the air conditioning system. [0003] combine figure 1 Shown is a four-way reversing valve in the prior art. The casing of the four-way reversing valve is provided with four communication pipes communicating with its inner cavity, which are respectively condenser communication pipes 101, which are used to communicate with the outdoor unit for heat exchange condenser (condenser), evaporator communication pipe 102, used to communicate with the heat exchanger (evaporator) of the indoor unit, exhaust communication pipe 103, used to communicate with the exhaust end o...

AI Technical Summary

Problems solved by technology

[0004] The piston slides in the inner cavity of the four-way reversing valve driven by the pressure difference between its two arms. If the pressure difference is small, the piston cannot be driven to slide left and right against the friction force. If the pressure difference between the two sides of the piston is large, it will often Noise will be generated because the piston hits the inner wall of the four-way reversing valve, and the service life of the four-way reversing valve will be shortened

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