Turbine noise absorber
First Claim
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1. A turbine housing for housing a turbine wheel, the turbine housing comprising:
- cylindrical wall having an cylindrical wall axis for coaxial alignment with a rotational axis of a turbine wheel;
an integral exhaust outlet conduit that damps structural vibrations and absorbs acoustic energy wherein the integral exhaust outlet conduit comprises a proximal end having an axis coaxial to the cylindrical wall axis, wherein the integral exhaust outlet conduit holds an inner conduit layer disposed between a rigid metal outer conduit layer and an innermost conduit layer and wherein the inner conduit layer comprises at least one member selected from a group consisting of woven wire, glass, metal foam, ceramic foam, ceramic particles, and metal particles.
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Abstract
Exemplary methods, devices and/or system for reducing noise produced by a turbine, such as, a turbocharger turbine. An exemplary exhaust conduit employs material to absorb exhaust-borne noise and/or structure-borne noise. Another exemplary exhaust conduit employs features that dampen wall vibration.
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Citations
26 Claims
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1. A turbine housing for housing a turbine wheel, the turbine housing comprising:
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cylindrical wall having an cylindrical wall axis for coaxial alignment with a rotational axis of a turbine wheel; an integral exhaust outlet conduit that damps structural vibrations and absorbs acoustic energy wherein the integral exhaust outlet conduit comprises a proximal end having an axis coaxial to the cylindrical wall axis, wherein the integral exhaust outlet conduit holds an inner conduit layer disposed between a rigid metal outer conduit layer and an innermost conduit layer and wherein the inner conduit layer comprises at least one member selected from a group consisting of woven wire, glass, metal foam, ceramic foam, ceramic particles, and metal particles. - View Dependent Claims (2, 3, 4, 5)
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6. An exhaust conduit to receive exhaust from a turbine, to receive structural vibrations from a housing of the turbine, to damp the structural vibrations and to absorb acoustic energy carried by the exhaust, the exhaust conduit comprising:
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an inner conduit layer comprising at least one member selected from a group consisting of woven wire, glass, metal foam, ceramic foam, ceramic particles, and metal particles; and a rigid outer conduit layer for housing the inner conduit layer and connecting the exhaust conduit to a turbine wherein the rigid outer conduit layer has a proximal end having an axis for coaxial alignment with a rotational axis of a turbine wheel of the turbine. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 24)
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19. An exhaust conduit for receiving exhaust from a turbine, the exhaust conduit comprising:
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a proximal end having an axis for coaxial alignment with a rotational axis of a turbine wheel of the turbine; a first inner conduit layer comprising perforated steel; a second inner conduit layer comprising woven wire; and a metal outer conduit layer to hold the first inner conduit layer and the second inner conduit layer, to connect the exhaust conduit to the turbine and to receive structural vibrations from the housing wherein the exhaust conduit damps the structural vibrations and absorbs acoustic enemy carried by the exhaust. - View Dependent Claims (20, 21, 22, 23)
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25. A turbine housing for housing a turbine wheel, the turbine housing comprising:
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a cylindrical wall having a cylindrical wall axis for coaxial alignment with a rotational axis of a turbine wheel; an exhaust conduit that damps structural vibrations and absorbs acoustic energy, the exhaust conduit comprising a proximal end having an axis coaxial to the cylindrical wall axis, an impervious metal conduit layer, a perforated metal conduit layer wherein the impervious metal conduit layer substantially surrounds the perforated metal conduit layer and wherein the layers define a substantially annular space therebetween, and a sound absorbing material disposed in the substantially annular space. - View Dependent Claims (26)
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Specification