Four-way reversing valve and heat exchange system comprising same

Abstract

The invention discloses a four-way reversing valve and a heat exchange system comprising the same. The four-way reversing valve comprises a valve body; a valve element is arranged inside the valve body; an air suction pipe opening, an air exhaust pipe opening, a first connecting pipe opening and a second connecting pipe opening are formed in the valve body; the valve element can move along an inner cavity of the valve body; a first cavity is formed by the left side of the valve body and the valve element; a second cavity is formed by the right side of the valve body and the valve element; a connecting rod is horizontally arranged on one side, connected with the first cavity, of the valve element; one end of the connecting rod is rotationally connected with an inner crank; one end of the inner crank is rotationally connected with a control shaft; a linear actuator is arranged in the position, close to the first connecting pipe opening, of the outer side of the valve body; an outer crankis rotationally connected to a front-end extending shaft of the linear actuator; and the control shaft penetrates through the valve body outwards to be rotationally connected with the outer crank. Bythe aid of the four-way reversing valve and the heat exchange system comprising the same, the problem of ineffective reversing caused by the fact that valve elements are relatively heavy and are relatively difficult to push and high-pressure gas colludes in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a four-way reversing valve and a heat exchange system comprising the four-way reversing valve. Background technique [0002] At present, there are mainly two types of large-capacity four-way reversing valves on the market: four-way reversing valves with cross-channel piston structure and four-way reversing valves with internal slider U-shaped channel design. All four-way reversing valves realize the linear movement of the valve core through the high and low pressure difference inside the refrigeration system, so as to achieve the purpose of switching between refrigeration and heating cycles. [0003] The structures of the two four-way reversing valves rely on the internal pressure difference to push the action of the valve core. The design of the mechanical structure is relatively simple, but there are the following disadvantages: due to the large weight and volum...

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a four-way reversing valve and a heat exchange system including the four-way reversing valve, which solves the problem that the spool is heavy and difficult to push the spool in the prior art. Commutation failure caused by high-pressure gas collusion

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