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US 5,401,150 AGranted
Noise reduced liquid sealed compressor
AssigneeGeneral Signal Corporation
InventorJeffrey M. Brown
Life of this patent
Estimating the term…
Abstract
A low noise compressor is realized, involving a port and manifold assembly, and in which a reactive silencer means is formed integrally within the assembly and coupled acoustically with at least one of the input and output manifolds, the silencer including a pair of resonant cavities configured so as to attenuate at least the first overtone of the fundamental frequency.
Claims6
A noise reduced, liquid sealed compressor comprising:
- a rotary compressor body, including a port and manifold assembly having input and output manifolds, and respective input and output ports;
- a pair of reactive silencers integrally formed within said port and manifold assembly, and coupled acoustically with said respective input and output manifolds;
- said silencers each including a pair of resonant cavities connected by a passage, said cavities being configured to attenuate at least the first overtone of the fundamental frequency of the compressor, whereby significant noise reduction is attained.
A port and manifold assembly for incorporation into a liquid sealed compressor comprising:
- input and output manifolds, and respective input and output ports;
- a pair of reactive silencers integrally formed within said port and manifold assembly and coupled acoustically with said respective input and output manifolds;
- said silencers each including a pair of resonant cavities connected by a passage, said cavities being configured to attenuate at least the first overtone of the fundamental frequency of the compressor, whereby significant noise reduction is attained.
Dependencies are inferred from the claim text.