High vacuum preventing apparatus for whirlpool type compressor

Abstract

This invention discloses one kind of vortex type compressor perfect vacuum arresting gear, and discharges the region together with the inspiration region in the cylinder interior to skid the insertion, and when unusual movement prevented the compressor interior the perfect vacuum piston, on the piston circumference surface forms at least above the gas channel which indents to the circumference direction, therefore the compression gas along the gas channel to the piston circumference direction even distribution, prevented the piston in the air cylinder interior to any side deviation, prevents the compression gas divulging. And, does not need closely to maintain through between the air cylinder and the piston for the difference, also can effective prevent the compression gas divulging, can save the production cost.

Description

technical field [0001] The invention relates to a compressor, in particular to a high vacuum prevention device for a scroll compressor. In particular, it is a high-vacuum prevention device for scroll compressors that prevents discharge gas leakage and is easy to manufacture. Background technique [0002] In general, compressors convert mechanical energy into compressive fluid compression energy, and are usually divided into reciprocating, scroll, centrifugal, and vane types. The scroll compressor is different from the reciprocating type that uses the linear motion of the piston, and uses a rotating body to suck, compress, and discharge gas like a centrifugal or vane type. figure 1 It is a longitudinal sectional view of an example of a prior art scroll compressor. As shown in the figure, the scroll compressor in the prior art includes: a shell 1 with a gas suction pipe SP and a gas discharge pipe DP; the main frame 2 and the auxiliary machine are respectively fixed on the u...

AI Technical Summary

Problems solved by technology

[0010] The high-vacuum prevention device of the scroll compressor is that during normal operation, the relatively high-pressure exhaust gas passes through the discharge compression fluid passage 9c, and when the piston 9B is pushed, the vacuum compression fluid passage 9b discharges the gas and flows to such as image 3 The relatively low-pressure intermediate compressed fluid passage 9b in the middle moves to expand the pore between the cylinder 9A, and a part of the gas is discharged through the enlarged pore t, and there is a possibility that the compression efficiency will decrease during the process of leaking to the suction side.

[0011] The gap t between the cylinder 9A and the piston 9B should be kept as precise as possible, which is difficult to process and increases the production cost

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