Rotary compressor with capacity modulation

Details Rotary compressor with capacity modulation Rotary compressor with capacity modulation

1984-08-03

1985-12-17

Gluck, Richard E.

Pumps

With condition responsive pumped fluid control

Bypass or relief valve controls venting by movable pump...

417299, 417310, F04B 4908

Patent

active

045589933

ABSTRACT:
The compression capacity of a rotary compressor may be changed by a cylinder bypass system. The change of compression capacity is achieved by a slide wall member which composes part of an inside wall of a cylinder containing a compression mechanism and which is movable, thereby bypassing gas being compressed to a suction side of the compressor. The slide wall member is caused to slide forward by gas pressure applied and to slide backward by a spring force. By controlling such gas pressure, the capacity of the compressor may be changed. A relatively large opening is formed in the cylinder when the slide wall member is moved backward, so that the compression capacity can be greatly reduced without a large decrease in efficiency.

REFERENCES:
patent: 2193244 (1940-03-01), Wolcott
patent: 3767328 (1973-10-01), Ladusaw
patent: 4344297 (1982-08-01), Ueno
patent: 4373352 (1983-02-01), Ladusaw
patent: 4459817 (1984-07-01), Inagaki et al.

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