Compressor sound suppression

Details Compressor sound suppression Compressor sound suppression

2005-03-07

2009-08-04

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

C418S201100, C418S181000, C418S270000, C417S295000, C417S312000

Reexamination Certificate

active

07568898

ABSTRACT:
A compressor apparatus has a housing (22) having first (53) and second (58) ports along a flowpath. One or more working elements (26, 28) cooperate with the housing to define a compression path between suction and discharge locations along the flowpath. A check valve (70) has a valve element having a first condition permitting downstream flow along the flowpath and a second condition blocking a reverse flow. Sound suppressing means (120, 220, 320) at least partially surround the flowpath upstream of the valve element (70).

REFERENCES:
patent: 4062199 (1977-12-01), Kasahara et al.
patent: 4781545 (1988-11-01), Yokomizo et al.
patent: 5208429 (1993-05-01), Field
patent: 6312232 (2001-11-01), Mori et al.
patent: 2004/0040322 (2004-03-01), Engel et al.

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