Rotary compressor and exhaust valve

Abstract

The invention discloses a rotary compressor and an exhaust valve. The compressor comprises a closed shell in which a motor and a compression pump are arranged, a compressor crankshaft, and a gas-liquid separator which is communicated with the compression pump through an air inlet elbow, wherein the compression pump comprises an upper flange, a cylinder and a lower flange which are sequentially arranged along the axial direction of the compressor crankshaft; a valve seat countersunk groove is formed in the upper flange; a valve seat and an exhaust port which is communicated with the cylinder are arranged in the valve seat countersunk groove; an exhaust valve capable of closing the exhaust port is arranged on the valve seat; a valve plate fixing hole adjacent to the exhaust port is formed in the valve seat; the exhaust valve comprises a valve, a fixing bolt and a spring positioned between the valve and the fixing bolt; a through hole is formed in the valve plate; the fixing bolt comprises a head part, a limiting part and a fixing part; the fixing part can penetrate through the through hole of the valve plate to be matched with the valve plate fixing hole; the valve plate is arranged on the valve seat; and the valve plate can move up and down along an axis of the fixing bolt. According to the rotary compressor, the strength of the upper flange can be improved, and the exhaust noise and energy loss of the valve plate can be eliminated, so that the performance of the compressor is improved.

Description

technical field [0001] The invention belongs to the technical field of compressors, in particular to a rotary compressor and an exhaust valve used therein. Background technique [0002] A compressor usually includes a casing, a pump body, a stator, a rotor, a rotating shaft, a gas-liquid separator, a suction pipe and an exhaust pipe. When working, the rotor rotates inside the stator, and drives the rollers to rotate eccentrically in the cylinder through the rotating shaft. Under the action of the eccentric rotation of the rollers, the refrigerant is sucked into the cylinder and compressed until the pressure exceeds the critical pressure before being discharged. The air pipe is output to the heat exchange system. Conventional compressors generally adopt the valve baffle method for exhaust. Due to the existence of the flange exhaust valve seat, the strength of the flange is greatly reduced, and thickening the valve seat will affect the clearance volume of the compressor. Mor...

AI Technical Summary

Problems solved by technology

Compared with the strip-shaped valve plate, this circular exhaust valve plate has better strength and is not easy to break, but it still has the disadvantages of complex structure and complicated process.

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