scroll compressor

Abstract

A scroll compressor is provided that may include a casing, an orbiting scroll and a non-orbiting scroll that suctions in a refrigerant from a suction space of the casing, compresses the suctioned refrigerant in a plurality of compression chambers, and discharges the compressed refrigerant into a discharge space of the casing, and a capacity varying device having a first valve and at least one second valve coupled with each other inside of the casing to selectively bypass a portion of the refrigerant in the plurality of compression chambers. With this structure, it is possible to prevent, in advance, refrigerant from being leaked outside of the scroll compressor, reduce pressure loss as a bypass flow path is shortened, reduce a size, weight, and manufacturing costs of the scroll compressor, and vary a capacity of the scroll compressor with a small operating force, and small power consumption.

Description

technical field [0001] The present invention relates to a scroll compressor, and more particularly, to a scroll compressor capable of changing the compression capacity by dividing a part of the refrigerant being compressed. Background technique [0002] Generally, a compressor is a device for compressing a fluid such as a refrigerant gas, and can be classified into a rotary compressor, a reciprocating compressor, a scroll compressor, and the like according to a method of compressing the fluid. [0003] The compressor is a high-efficiency and low-noise compressor widely used in the field of air conditioners. In the scroll compressor, an orbiting scroll (scroll) having a wrap (hereinafter referred to as an orbiting wrap) and a wrap (hereinafter referred to as an orbiting wrap) meshing with the orbiting wrap (hereinafter , known as the non-orbiting scroll) of the non-orbiting scroll for relative orbital motion. In addition, during the relative orbital motion of the orbiting s...

AI Technical Summary

Problems solved by technology

As a result, the branch flow path becomes longer to increase the pressure loss, and the refrigerant flows through each connecting part (the connection part between the first branch pipe 91 and the casing, the first branch pipe 91 and the opening and closing part). The connecting part of the valve 93, the connecting part of the on-off valve 93 and the second branch pipe 92, the connecting part of the second branch pipe 92 and the suction pipe 11) leaks to the outside of the compressor and causes compression Machine size, weight and manufacturing costs increase

[0019] In addition, in the conventional scroll compressor, the on-off valve 93 directly opens and closes the branch flow path, so it needs to overcome the pressure of the refrigerant to be branched and operate, which requires a considerable effort. operating force

Therefore, in order to change the capacity of the compressor, it will need to consume a considerable amount of power

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