IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0895268
(2007-08-23)
|
등록번호 |
US-8197188
(2012-06-12)
|
우선권정보 |
GB-0503660.3 (2005-02-23); GB-0519152.3 (2005-09-20) |
발명자
/ 주소 |
- Clay, David Christopher
- Sheng, Xioazhen
|
출원인 / 주소 |
- Cummins Turbo Technologies Limited
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
A compressor for compressing a gas comprises an impeller wheel mounted within a housing (2) defining an inlet (8) and an outlet (6). The inlet (8) has a plurality of apertures (20) in the form of bores or grooves defined in its surface that serve as an integral silencer. The inlet (8) may comprise a
A compressor for compressing a gas comprises an impeller wheel mounted within a housing (2) defining an inlet (8) and an outlet (6). The inlet (8) has a plurality of apertures (20) in the form of bores or grooves defined in its surface that serve as an integral silencer. The inlet (8) may comprise a map-width enhanced structure (4) with the bores provided on one to a number of surfaces. The design provides for a compact and efficient compressor with noise reduction such that higher pressure ratio designs may be adopted. The apertures (20) may be provided in the housing (2) that defines the inlet (8) or in a separate insert.
대표청구항
▼
1. A compressor for compressing a gas, the compressor comprising: a housing having an inlet and an outlet;an impeller wheel including a plurality of vanes rotatably mounted within the housing between said inlet and outlet;the housing having an inner wall defining a surface located in close proximity
1. A compressor for compressing a gas, the compressor comprising: a housing having an inlet and an outlet;an impeller wheel including a plurality of vanes rotatably mounted within the housing between said inlet and outlet;the housing having an inner wall defining a surface located in close proximity to radially outer edges of impeller vanes which sweep across said surface as the impeller wheel rotates about its axis;the inlet comprises an outer tubular wall extending away from the impeller wheel in an upstream direction and forming a gas intake portion of the inlet and an inner tubular wall of diameter extending away from the impeller wheel in an upstream direction within the outer tubular wall and defining an inducer portion of the inlet and an annular gas flow passage defined between the inner and outer tubular walls, the annular gas flow passage being in fluid communication with the impeller wheel; andwherein there is provided a plurality of blind noise attenuation apertures defined in an inside surface of a part of the housing that defines said inlet, along the length of the inlet, upstream of said impeller vanes. 2. A compressor according to claim 1, wherein the inlet is further defined by a member disposed inside said housing, and the, or each, noise attenuation aperture is defined in said member. 3. A compressor according to claim 2, wherein the member is supported at one end of the inlet part of the housing and the inner tubular wall is defined by the insert. 4. A compressor according to claim 3, wherein the inner tubular wall is free from supports in the annular gas flow passage. 5. A compressor according to claim 4, wherein the member has a first portion that is supported at one end of the inlet part of the housing such that an outer surface of that first portion engages the inner surface of the end of the inlet part of the housing. 6. A compressor according to claim 5, wherein the first portion of the member has an outer annular section and an inner tapered portion that, in use, directs air into the inlet. 7. A compressor according to claim 6, wherein the member has a second portion that forms said inner tubular wall, the second portion being joined to the first portion but being separated by a discontinuous annular slot. 8. A compressor according to claim 3, wherein the member has a first portion that is supported at one end of the inlet part of the housing such that an outer surface of that first portion engages the inner surface of the end of the inlet part of the housing. 9. A compressor according to claim 8, wherein the first portion of the member has an outer annular section and an inner tapered portion that, in use, directs air into the inlet. 10. A compressor according to claim 9, wherein the member has a second portion that forms said inner tubular wall, the second portion being joined to the first portion but being separated by a discontinuous annular slot. 11. A compressor according to claim 1, wherein at least one noise attenuation aperture is defined in an inside surface of the inner tubular wall. 12. A compressor according to claim 1, wherein at least one noise attenuation aperture is defined in an inside surface of the outer tubular wall. 13. A compressor according to claim 1, wherein there are a plurality of noise attenuation apertures defined along the length of the annular gas flow passage. 14. A compressor according to claim 13, wherein at least one noise attenuation aperture is a blind bore. 15. A compressor according to claim 14, wherein the, or each, noise attenuating aperture has a longitudinal axis that extends in a non-radial direction. 16. A compressor according to claim 15, wherein the longitudinal axis of the aperture extends in a direction that is inclined at an angle of less than 90° to the axis of the inlet. 17. A compressor according to claim 13, wherein at least one noise attenuation aperture is an elongated groove. 18. A compressor according to claim 17, wherein the groove or grooves extend circumferentially around the inlet. 19. A compressor according to claim 17, wherein the groove or grooves extend in a direction that is substantially parallel with a centre axis of the inlet. 20. A compressor according to claim 1, wherein at least one noise attenuation aperture is in communication with a closed chamber defined in or around the inlet. 21. A compressor according to claim 1, wherein at least one noise attenuation aperture is lined with acoustic absorption material. 22. A compressor according to claim 1, wherein the depth of each aperture is substantially one quarter of the wavelength of the noise emitted at a predetermined blade pass frequency. 23. A compressor according to claim 1, wherein at least one noise attenuation aperture is substantially circular. 24. A compressor according to claim 23, wherein the, or each, noise attenuating aperture has a longitudinal axis that extends in a non-radial direction. 25. A compressor according to claim 24, wherein the longitudinal axis of the aperture extends in a direction that is inclined at an angle of less than 90° to the axis of the inlet. 26. A compressor according to claim 1, wherein the, or each, noise attenuation aperture is substantially non-circular. 27. A compressor according to claim 1, wherein the inlet is an integral part of the housing. 28. A compressor according to claim 1, wherein the inlet defines an inner surface that is an upstream extension of said surface of the housing that is swept by outer edges of the impeller vanes. 29. A compressor according to claim 1, wherein the housing is a unitary structure. 30. A turbocharger comprising a compressor according to claim 1. 31. A compressor for compressing a gas, the compressor comprising: a housing having an inlet and an outlet;an impeller wheel including a plurality of vanes rotatably mounted within the housing between said inlet and outlet;the housing having an inner wall defining a surface located in close proximity to radially outer edges of impeller vanes which sweep across said surface as the impeller wheel rotates about its axis;wherein the inlet comprises an outer tubular wall extending away from the impeller wheel in an upstream direction and forming a gas intake portion of the inlet and an inner tubular wall of diameter extending away from the impeller wheel in an upstream direction within the outer tubular wall and defining an inducer portion of the inlet and an annular gas flow passage defined between the inner and outer tubular walls, the annular gas flow passage being in fluid communication with the impeller wheel;wherein there is provided at least one noise attenuation aperture defined in said inlet, upstream of said impeller vanes;wherein the inlet is defined by a member disposed inside said housing, and the, or each, noise attenuation aperture is defined in said member, the member being supported at one end of the inlet part of the housing and the inner tubular wall being defined by the member. 32. A compressor according to claim 31, wherein the, or each, noise attenuation aperture is defined in an inside surface of a part of the housing that defines said inlet. 33. A compressor according to claim 32, wherein the inner tubular wall is free from supports in the annular gas flow passage. 34. A compressor according to claim 32, wherein the member has a first portion that is supported at one end of the inlet part of the housing such that an outer surface of that first portion engages the inner surface of the end of the inlet part of the housing. 35. A compressor according to claim 34, wherein the first portion of the member has an outer annular section and an inner tapered portion that, in use, directs air into the inlet. 36. A compressor according to claim 34, wherein the member has a second portion that forms said inner tubular wall, the second portion being joined to the first portion but being separated by a discontinuous annular slot. 37. A compressor according to claim 31, wherein the member has a first portion that is supported at one end of the inlet part of the housing such that an outer surface of that first portion engages the inner surface of the end of the inlet part of the housing. 38. A compressor according to claim 37, wherein the first portion of the member has an outer annular section and an inner tapered portion that, in use, directs air into the inlet. 39. A compressor according to claim 37, wherein the member has a second portion that forms said inner tubular wall, the second portion being joined to the first portion but being separated by a discontinuous annular slot. 40. A compressor according to claim 31, wherein at least one noise attenuation aperture is defined on an inside surface of the inner tubular wall. 41. A compressor according to claim 31, wherein at least one noise attenuation aperture is defined in an outside surface of the inner tubular wall. 42. A compressor for compressing a gas, the compressor comprising: a housing having an inlet and an outlet;an impeller wheel including a plurality of vanes rotatably mounted within the housing between said inlet and outlet;the housing having an inner wall defining a surface located in close proximity to radially outer edges of impeller vanes which sweep across said surface as the impeller wheel rotates about its axis;the inlet comprises an outer tubular wall extending away from the impeller wheel in an upstream direction and forming a gas intake portion of the inlet and an inner tubular wall of diameter extending away from the impeller wheel in an upstream direction within the outer tubular wall and defining an inducer portion of the inlet and an annular gas flow passage defined between the inner and outer tubular walls, the annular gas flow passage being in fluid communication with the impeller wheel;wherein there is provided a plurality of noise attenuation apertures defined in an inside surface of a part of the housing that defines said inlet, along the length of the inlet, upstream of said impeller vanes; andwherein at least one of the noise attenuation apertures is a blind bore. 43. A compressor for compressing a gas, the compressor comprising: a housing having an inlet and an outlet;an impeller wheel including a plurality of vanes rotatably mounted within the housing between said inlet and outlet;the housing having an inner wall defining a surface located in close proximity to radially outer edges of impeller vanes which sweep across said surface as the impeller wheel rotates about its axis;the inlet comprises an outer tubular wall extending away from the impeller wheel in an upstream direction and forming a gas intake portion of the inlet and an inner tubular wall of diameter extending away from the impeller wheel in an upstream direction within the outer tubular wall and defining an inducer portion of the inlet and an annular gas flow passage defined between the inner and outer tubular walls, the annular gas flow passage being in fluid communication with the impeller wheel;wherein there is provided a plurality of noise attenuation apertures defined in an inside surface of a part of the housing that defines said inlet, along the length of the inlet, upstream of said impeller vanes; andwherein at least one of the noise attenuation apertures is a blind elongated groove.
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