Scroll compressor

Abstract

A scroll compressor is provided that may include a casing including a rotational shaft, a cover fixed inside of the casing to partition the inside of the casing into a suction space and a discharge space, a first scroll revolved by rotation of the rotational shaft, a second scroll disposed on or at one side of the first scroll to define a compression chamber together with the first scroll, the second scroll including a discharge, through which a refrigerant pressed in the compression chamber may be discharged, a switching device movably disposed on or at one side of the discharge to selectively open and close the discharge, a back pressure portion including a moving guide that accommodates at least a portion of the switching device, and a top surface that covers one side of the switching device; and an adhesion preventer that reduces a contact area between the switching device and at least a portion of the back pressure portion.

Description

Technical field [0001] The invention relates to a scroll compressor. Background technique [0002] The scroll compressor, as a compressor using a fixed scroll having a spiral scroll portion and a orbiting scroll relative to the above-mentioned fixed scroll, follows the fixed scroll and the orbiting scroll. The disk rotates in an intermeshing manner, so that the volume of the compression chamber formed between the fixed scroll and the orbiting scroll decreases with the orbiting motion of the orbiting scroll, and the pressure of the fluid rises accordingly, and from the perforation to the fixed A compressor that discharges fluid from the discharge port in the center of the scroll. [0003] This scroll compressor has the feature of continuous suction, compression and discharge during the orbiting scroll of the orbiting scroll. Therefore, in principle, there is no need to provide a discharge valve and a suction valve. Moreover, it not only has a simple structure due to the small numb...

AI Technical Summary

Problems solved by technology

Eventually, the discharge path of the discharge-side refrigerant is blocked, and the above-mentioned discharge-side refrigerant cannot be discharged toward the suction side of the compressor, and the fixed scroll is pressed further downward.

[0014] As described above, if the fixed scroll is pressurized and maintained in close contact with the orbiting scroll at a predetermined level or higher, it is difficult to quickly restart the scroll compressor.

As a result, in order to be able to quickly restart the scroll compressor, a large initial torque of the compressor is required, and when the initial torque becomes large, noise and wear are generated, and the operating efficiency of the compressor is reduced

Images