A check valve for a scroll compressor

Abstract

The invention discloses a check valve of a scroll compressor. The check valve comprises a valve base; the valve base includes a valve base body arranged in an exhaust port of a high-low pressure separation plate of the compressor; a valve base exhaust port is formed in the valve base body; one side of a valve plate is hinged to the valve base body, and covers the valve base exhaust port; an elastic twisting piece is arranged in the hinged place of the valve plate to the valve base body; and / or the gravity center of the valve plate is arranged on the opposite side of the hinged place of the valve plate to the valve base body. When the compressor is operated, the elastic force of the elastic twisting piece can balance the unbalanced force of exhaust pulsation of the compressor to the valve plate, so that the collision between the valve plate and the valve base is prevented, and the noise of the compressor is reduced; when the compressor is stopped, the elastic twisting piece provides initial elastic force, so that the valve plate can be quickly closed to prevent reverse rotation of the compressor to generate noise; and on the other hand, when the compressor is stopped, the valve plate obtains initial closing torque under the effect of gravity, and is quickly closed under the effect of high-pressure airflow backflow, so that the noise caused by reverse rotation of the compressor is prevented.

Description

technical field [0001] The invention belongs to the field of compressors, and in particular relates to a check valve of a scroll compressor. Background technique [0002] Scroll compressors are widely used in various industries of national life. The scroll compressor is mainly composed of a shell, high and low pressure partitions, a top cover, a stationary scroll, a movable scroll and power equipment. The cover and the exhaust pipe form a high pressure cavity, the high and low pressure partitions and the casing form a low pressure cavity, and the stationary scroll, the movable scroll and the power equipment are arranged in the low pressure cavity. The motor drives the movable scroll and the stationary scroll to mesh with each other. In the process of suction, compression and exhaust, the movable scroll is driven by the eccentric shaft to rotate in a small plane around the center of the stationary scroll. The pressure difference is sucked into the suction port on the periph...

AI Technical Summary

Problems solved by technology

However, under the condition of low exhaust gas flow, insufficient return gas will lead to slow shutdown or even failure to close the flap valve plate, causing the gas to flow back into the compression chamber and cause the compressor to reverse, causing the compressor to generate very loud noise

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