High to low side bypass to prevent reverse rotation

Details High to low side bypass to prevent reverse rotation High to low side bypass to prevent reverse rotation

1991-09-23

1992-12-01

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

With condition responsive control of pump fluid valve

417 32, 417292, 621963, F04B 4902

Patent

active

051674912

ABSTRACT:
Rotary compressors such as screw compressors and scroll compressors are capable of reverse operation at shutdown as the system pressure seeks to equalize through the running gear. The present invention provides a valved bypass which is opened responsive to the initiation of stopping the compressor. The valve bypass may be located internally or externally with respect to the compressor.

REFERENCES:
patent: 2007388 (1935-07-01), Tarleton
patent: 2039089 (1936-04-01), Koch
patent: 2331264 (1943-10-01), Carter
patent: 2646205 (1953-07-01), Rosenschold
patent: 3759057 (1973-08-01), English et al.
patent: 4820130 (1989-04-01), Eber et al.

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