Acoustics – Miscellaneous
Patent
1992-04-03
1993-02-02
Eldred, J. Woodrow
Acoustics
Miscellaneous
181249, 181255, 181269, 181271, 417312, F01N 100
Patent
active
051839741
ABSTRACT:
An attenuator for pressure and sound energy pulsations, such as are commonly produced in refrigerant gas discharged from a piston-type refrigerant compressor, is provided. The attenuator includes an annular elastomeric body supported by a rigid tubular housing. The body forms a cavity filled with a damping fluid and annular dividers define multiple chambers that are concentrically disposed about a central refrigerant gas flow passage. Damping tracks are provided in the dividers to allow fluid flow between the chambers. As refrigerant gas flows through the passage, the pressure/sound pulsations are flattened and smoothed. The resilient walls of the body are designed to bulge inwardly for a maximum 50% restriction. Gas flow orifices of the dividers have substantially the same cross-sectional area as the refrigerant line.
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Adonakis Nikolaos A.
Wilhelm Richard D.
Eldred J. Woodrow
General Motors Corporation
Phillips Ronald L.
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