Back to results
US 8,021,126 B2Granted
Compressor sound suppression
AssigneeCarrier Corporation
InventorsVishnu M. Sishtla, Lee G. Tetu, William P. Patrick
Life of this patent
Estimating the term…
Abstract
A compressor has first and second enmeshed rotors: rotating about first and second axes. The first rotor is supported by a bearing system carried by a bearing case. The bearing case has at least a first port to a discharge plenum. A first sound-absorbing material is positioned within the first port.
Claims31
A compressor comprising:
- a first rotor having a first rotational axis;
- a second rotor having a second rotational axis and enmeshed with the first rotor;
- a discharge plenum;
- a first bearing system supporting the first rotor for rotation about the first rotational axis;
- a bearing case carrying the bearing system and having at least a first port to the discharge plenum;
- a first sound absorbing material positioned within the first port;
- a muffler downstream of the discharge plenum;
- and
- a centerbody within the discharge plenum and spanning a major portion of a length between the bearing case and the muffler.
6 more elements
A muffler element comprising:
- a structural body;
- and
- a sound-absorbing material carried by the body,
- wherein the body comprises:
- first and second ends;
- a transversely outwardly convex first sidewall portion;
- a transversely outwardly concave second sidewall portion essentially opposite the first sidewall portion and at least partially foraminate;
- a first endwall proximate the first end and at least partially foraminate;
- and
- one or more mounting projections having one or more mounting apertures and extending transversely proximate the first end.
7 more elements
A compressor comprising:
- a housing;
- a suction plenum;
- a plurality of working elements defining a plurality of compression path segments downstream of the suction plenum;
- a discharge plenum;
- a first muffler downstream of the discharge plenum;
- and
- a plurality of additional mufflers upstream of the discharge plenum and downstream of the plurality of working elements.
4 more elements
A method for remanufacturing a compressor or reengineering a configuration of the compressor comprising:
- providing an initial such compressor or configuration having:
- a first rotor having a first rotational axis;
- a second rotor having a second rotational axis and enmeshed with the first rotor;
- a third rotor having a third rotational axis and enmeshed with the first rotor;
- a discharge end bearing case having a plurality of discharge ports;
- a first bearing carried by the discharge end bearing case and supporting the first rotor;
- a second bearing carried by the discharge end bearing case and supporting the second rotor;
- a third bearing carried by the discharge end bearing case and supporting the third rotor;
- and
- a discharge plenum;
- enlarging at least one of the discharge ports to accommodate a sound-absorbing material;
- and
- placing the sound-absorbing material in the at least one of the discharge ports.
10 more elements
A compressor comprising:
- a first rotor having a first rotational axis;
- a second rotor having a second rotational axis and enmeshed with the first rotor;
- a discharge plenum;
- and
- a muffler system comprising:
- a sound-absorbing centerbody at least partially within the discharge plenum;
- and
- a sound-absorbing outer element at least partially surrounding the centerbody and defining a generally annular flow path portion between the centerbody and outer element, wherein:
- the outer element has an inboard surface at least partially downstream convergent along a first longitudinal span;
- the outer element has an outboard surface at least partially downstream convergent along the first longitudinal span;
- and
- the centerbody has an outboard surface at least partially downstream divergent along said first longitudinal span.
9 more elements
A compressor comprising:
- a first rotor having a first rotational axis;
- a second rotor having a second rotational axis and enmeshed with the first rotor;
- a discharge plenum;
- and
- a muffler system comprising:
- a sound-absorbing centerbody at least partially within the discharge plenum;
- and
- a sound-absorbing outer element at least partially surrounding the centerbody and
- defining a generally annular flow path portion between the centerbody and outer element, wherein:
- the outer element has an inboard surface at least partially downstream convergent along a first longitudinal span;
- the muffler system comprises a central inner tube extending along at least 80% of a total longitudinal span of the muffler system;
- and
- the centerbody has an outboard surface at least partially downstream divergent along said first longitudinal span.
10 more elements
A compressor comprising:
- a first rotor having a first rotational axis;
- a second rotor having a second rotational axis and enmeshed with the first rotor;
- a discharge plenum;
- and
- a muffler system comprising:
- a sound-absorbing centerbody at least partially within the discharge plenum;
- and
- a sound-absorbing outer element at least partially surrounding the centerbody and
- defining a generally annular flow path portion between the centerbody and outer element, wherein:
- the outer element has an inboard surface at least partially downstream convergent along a first longitudinal span;
- along the first longitudinal span the outer element comprises a plurality of radially staggered rings of like radial span;
- and
- the centerbody has an outboard surface at least partially downstream divergent along said first longitudinal span.
10 more elements
Dependencies are inferred from the claim text.