Vaccum preventing device for vortex complessor

Abstract

Disclosed is a vacuum preventing device of a scroll compressor comprising: a discharge cover installed at a body of a fixed scroll for dividing inside of a case into a discharge region and a suction region; a vacuum cylinder installed in the discharge cover thus to be connected to a compression chamber formed between the fixed scroll and an orbiting scroll and having a pressure space therein so that the discharge region can be connected to the suction region; a piston movably installed in the pressure space for selectively connecting the discharge region with the suction region by a pressure difference between the compression chamber and the suction region; and an elastic member installed in the pressure space for providing an elastic force to the piston.

Description

technical field [0001] The present invention relates to a vacuum prevention device for a scroll compressor, and more particularly, to a vacuum prevention device for a scroll compressor which can prevent abnormal During operation, prevents vacuum in the compressor by recirculating exhaust from the discharge area into the suction area. Background technique [0002] Generally speaking, a compressor is a device that converts mechanical energy into compressed fluid potential. According to the compression method, it is mainly divided into the following types: reciprocating compressor, scroll compressor, centrifugal compressor and vane compressor. [0003] Scroll compressors are structured as follows: Gas is sucked, compressed, and discharged by using a rotating member similar to centrifugal and vane compressors, unlike reciprocating compressors, which use linear reciprocation of pistons sports. [0004] figure 1 is a longitudinal cross-sectional view showing the interior of a s...

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Problems solved by technology

[0023] However, since the existing vacuum preventer is formed in the fixed volute, the manufacturing cost of the vacuum preventer is very expensive, and the strength of the fixed volute is also greatly reduced.

Therefore, the fixed volute is easily damaged during operation

[0024] In addition, since the pressure space is formed on the side surface of the fixed volute, and in order to prevent the spring installed in the pressure space from being separated from the piston, the plug must be inserted into one end of the opening portion of the pressure space, so the whole structure becomes complicated and increases manufacturing cost

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