Throttled exhaust outlet to reservoir for reducing noise resulti

Details Throttled exhaust outlet to reservoir for reducing noise resulti Throttled exhaust outlet to reservoir for reducing noise resulti

1988-01-13

1990-05-08

Garrett, Robert E.

Power plants

Pressure fluid source and motor

Cyclically operable reciprocating or oscillating motor or...

91471, 100269R, 251127, 137592, B30B 1518, F15B 2104

Patent

active

049227165

ABSTRACT:
A method and apparatus for reducing the intensity of the sound that accompanies a rapid decompression in a pressurized hydraulic system such as that of an injection molding machine. The apparatus includes a reduced area valve that interconnects the high pressure system with a low pressure system, with the valve connected with a tubular muffler so that high pressure fluid is initially released through the valve and into the muffler. The muffler includes a plurality of spaced apertures that face a rigid structural surface so that the high pressure fluid passing through the muffler issues from the several apertures and impinges on the rigid structure to dissipate the pressure shock accompanying decompression, and thereby modulate the intensity of the sound of decompression.

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