scroll compressor

Abstract

The present invention provides a scroll compressor, which includes: a shell, the sealed internal space is separated into a low-pressure part and a high-pressure part; , form a compression chamber consisting of a suction chamber, an intermediate pressure chamber and a discharge chamber together with the above-mentioned orbiting scroll; the back pressure chamber assembly is combined with the above-mentioned non-rotating scroll to form a back pressure chamber; the valve housing groove is formed in At least one of the above-mentioned non-rotating scroll or the above-mentioned back pressure chamber assembly; a detour hole passing through from the above-mentioned intermediate pressure chamber to the above-mentioned valve housing groove; The pressure opening and closing of the above-mentioned detour hole; the communication path communicates from the above-mentioned valve housing groove to the above-mentioned low-pressure part; and the control valve selectively opens and closes the above-mentioned communication path according to needs, so the production of the scroll compressor is simple, and the responsiveness of the valve is improved. It is improved, and the specification restriction on the valve can be eased.

Description

technical field [0001] The present invention relates to a scroll compressor, in particular to a capacity variable device of the scroll compressor. Background technique [0002] The scroll compressor has the following structure: a non-rotating scroll is arranged in the inner space of the casing, the rotating scroll engages with the non-rotating scroll and performs a rotating motion, and the non-rotating scroll and the non-rotating scroll of the non-rotating scroll Two paired compression chambers consisting of a suction chamber, an intermediate pressure chamber and a discharge chamber are formed between the orbiting wraps of the orbiting scroll. [0003] Compared with other types of compressors, the scroll compressor can obtain a relatively high compression ratio, and can smoothly connect the suction, compression, and discharge strokes of the refrigerant, so as to obtain a stable torque (torque), so it is used in air conditioners. etc., are widely used for refrigerant compres...

AI Technical Summary

Problems solved by technology

[0019] However, the variable capacity device of the existing scroll compressor as described above has a large number of parts because it is composed of the adjusting ring 61, the lifting ring 62 and the control valve 63. In order to make the adjusting ring 61 work, it needs to be adjusted. The first communication path 61a, the second communication path 61b, and the third communication path 61c are formed on the ring 61, so the structure of the adjustment ring 61 is complicated.

[0020] In addition, the variable capacity device of the conventional scroll compressor needs to use the refrigerant in the back pressure chamber 60a to make the adjustment ring 61 float up quickly. And the weight increases, so it is difficult to make the adjustment ring 61 float up quickly.

In addition, the flow path for floating the adjusting ring 61 is long, and refrigerant needs to flow into the space between the adjusting ring 61 and the lifting ring 62 to float the adjusting ring 61, but because there is still a back pressure on the adjusting ring 61 The pressure of the chamber 60a, so it is not easy to make the adjustment ring 61 float, and the response of the corresponding valve is reduced, so that the capacity change of the compressor cannot be quickly controlled.

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