CAPACITY MODULATED SCROLL COMPRESSOR

摘要

A capacity modulation assembly is provided and may include a control valve and a first line extending between the control valve and a suction pressure region disposed within a compressor shell, whereby the suction pressure region is in communication with a suction inlet gas fitting extending through a shell of a compressor. The capacity modulation assembly may additionally include a second line extending between the control valve and an intermediate pressure region disposed within the compressor shell, whereby the intermediate pressure region is in communication with compression pockets defined between an orbiting scroll and a non-orbiting scroll.

主权项

1. A compressor comprising:
a shell defining an opening that receives a suction gas inlet fitting in communication with a suction pressure region disposed within the shell; a bearing housing fixed relative to the shell; a compression mechanism located within the shell, supported on the bearing housing and in communication with the suction pressure region, the compression mechanism including an orbiting scroll and a non-orbiting scroll that include spiral wraps defining compression pockets therebetween, at least one of the orbiting scroll and the non-orbiting scroll defining an intermediate passage that provides communication between the compression pockets and an intermediate pressure region disposed within the shell; and a capacity modulation assembly including a first control valve, a first line, and a second line, the first line extending between the suction pressure region and the first control valve, the second line extending between the intermediate pressure region and the first control valve, the first control valve selectively opening to provide communication between the intermediate pressure region and the suction pressure region and thereby separate the orbiting scroll and the non-orbiting scroll to reduce the capacity of the compressor.