Scroll compressor

Abstract

A scroll compressor may include a first scroll member and a second scroll member. A first scroll blade of the first scroll member is engaged with a second scroll blade of the second scroll member to form a series of compression cavities including a suction cavity, a plurality of intermediate cavities, and a discharge cavity. A bypass passage extends through the first end plate of the first scrollmember. One end of the bypass passage communicates with an exhaust passage via a bypass port and the other end of the bypass passage communicates with the intermediate cavity. The position of the bypass port is deviated in a radial direction from the position where the bypass passage communicates with the intermediate cavity. The configuration of the bypass passage allows an increase in the degreeof freedom in the design of the variable volume ratio of the scroll compressor.

Description

technical field [0001] The present disclosure relates to the technical field of scroll compressors, and more particularly, to scroll compressors with variable volume ratios. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] A climate control system—such as a heat pump system, refrigeration system, or air conditioning system—may include a fluid circuit having an outdoor heat exchanger, an indoor heat exchanger, an An expansion device, and one or more compressors that circulate a working fluid (eg, refrigerant) between an indoor heat exchanger and an outdoor heat exchanger. Effective and reliable operation of the compressor is desired to ensure that the climate control system in which the compressor is installed can effectively and efficiently provide cooling and / or heating as required. Scroll compressors with a variable volume ratio (VVR) are often used in such systems to...

AI Technical Summary

Problems solved by technology

[0006] However, due to the limited area of ​​the area where the exhaust passage is located, the design freedom of the bypass passage is very low when the outlet of the discharge passage and the bypass passage and the bypass valve are all arranged in the limited space of the exhaust passage.

It not only limits the adjustment ability of the design volume ratio, but also limits the design of the bypass valve itself.

In addition, the axially extending medium-pressure gas inlet of the bypass passage needs to communicate with the axially extending medium-pressure gas outlet, so the location of the medium-pressure gas inlet is also limited, which also limits the ability to adjust the design volume ratio

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