Shuttle valve for refrigerator compressor

Abstract

The invention discloses a shuttle valve for a refrigerator compressor. The shuttle valve comprises a valve body and a valve element, wherein the valve body comprises a middle-section pipeline as well as a first gas inlet pipeline and a second gas inlet pipeline which are connected with the middle-section pipeline; the pipe diameters of the first and second gas inlet pipelines are smaller than the pipe diameter of the middle-section pipeline; the valve element comprises an element body and two element heads positioned on the end surface of the element body; the element heads are wedge-shaped and face toward a gas inlet direction; and a bench is arranged on a junction of the first gas inlet pipeline, the second gas inlet pipeline and the middle-section pipeline. According to the technical scheme adopted by the invention, the core heads are wedge-shaped and face towards the gas inlet direction, so that the element heads can reduce flowing resistance of gas to the greatest extent, and a medium can be guaranteed to smoothly circulate in pipelines. The bench is arranged, so that the element body limits the valve element from returning in a resisting mode, and the element body is prevented from blocking the pipelines to affect normal passing of gas; and moreover, the element body clings to the bench, so that the pipeline at one end is sealed very well by the valve element.

Description

technical field [0001] The invention relates to the technical field of manufacturing refrigerator accessories, in particular to a shuttle valve for a refrigerator compressor. Background technique [0002] The valve body of the shuttle valve has first, second inlets and an outlet. When the compressed air enters from the first inlet, the inner valve core seals the second inlet, and the compressed air flows from the first inlet to the outlet. If the compressed air enters from the second inlet, the valve core will close the first inlet, and the compressed air will flow from the second inlet to the outlet. When the compressed air flows in the reverse direction, such as a pneumatic cylinder or valve disc discharges compressed air, the valve core stays in its original position due to the pressure condition. At present, the spool of the traditional shuttle valve is just a round steel ball. When the gas is flowing, the steel ball seal is not only slow, but also has poor sealing per...

AI Technical Summary

Problems solved by technology

At present, the spool of the traditional shuttle valve is just a round steel ball. When the gas is flowing, the steel ball seal is not only slow, but also has poor sealing performance; sometimes when the steel ball is at the outlet, the entire gas circulation process is not smooth. Reduced work efficiency

The pipeline of the traditional compressor shuttle valve is in contact with high-temperature and high-pressure gas, and the service life of the shuttle valve is short

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