Variable capacity scroll compressor

Details Variable capacity scroll compressor Variable capacity scroll compressor

1997-02-25

1999-03-23

Thorpe, Timothy

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

4174105, F04B 4900

Patent

active

058850635

ABSTRACT:
A variable capacity control scroll compressor, including: a cylinder disposed in the end plate of the fixed scroll incorporating a reciprocating shuttle valve to selectively enable fluid passage through a first group of bypass holes communicating with a pair of fluid pockets in a given compression stroke, and further through a second group of bypass holes communicating with a single fluid pocket as the pair of fluid pockets merge into one pocket during compression, sequential opening and closing of these bypass holes being controlled by a pressure control valve administering a control pressure Pm to operate the shuttle valve, the control valve being provided in the fixed end plate such that all of the control mechanism components are integrated into a single structure to reduce fabrication costs and enhance control efficiency.

REFERENCES:
patent: 4890987 (1990-01-01), Sato et al.
patent: 5639225 (1997-06-01), Matsuda et al.

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