IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0651926
(2003-08-29)
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발명자
/ 주소 |
- Giesler, William L.
- Langston, Todd A.
- Geck, Kellan P.
- Kincheloe, Todd A.
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출원인 / 주소 |
- Honeywell International, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
9 인용 특허 :
14 |
초록
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A fluid-cooled seal rotor is described for a seal assembly that includes a seal case, a seal stator, and wherein the rotor has a sealing face on a first side and a heat-transfer structure on a second side. The heat-transfer structure may be a roughened surface. The heat-transfer structure may have p
A fluid-cooled seal rotor is described for a seal assembly that includes a seal case, a seal stator, and wherein the rotor has a sealing face on a first side and a heat-transfer structure on a second side. The heat-transfer structure may be a roughened surface. The heat-transfer structure may have protrusions which may be fins, including fins with roughened surfaces. The heat-transfer structure may have additional heat-transfer structures thereon to create complex, including fractal, structures. The fins may be shaped as impellers to move oil over the heat-transfer structure. Channels between fins may have a width greater than twice the boundary layer thickness for the fluid engaged by the fins. The fluid-cooled rotor, the seal assembly having the fluid-cooled rotor, an air turbine starter having the seal assembly, air turbine starters and other machines with rotating shafts using the seal are within the scope of the invention.
대표청구항
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1. An air turbine starter, comprising:a housing having a fluid inlet port, fluid outlet port, and a fluid flow passage extending therebetween; a turbine wheel having a turbine shaft rotationally mounted within the housing, the turbine wheel further having at least two turbine blades extending radial
1. An air turbine starter, comprising:a housing having a fluid inlet port, fluid outlet port, and a fluid flow passage extending therebetween; a turbine wheel having a turbine shaft rotationally mounted within the housing, the turbine wheel further having at least two turbine blades extending radially into the fluid flow passage; and a seal assembly mounted in the housing, the seal assembly including: a seal case mounted on the housing; a seal stator mounted within the seal case, the seal stator having at least a first face and a second face; a seal rotor mounted on the turbine shaft, said seal rotor having: a first side adapted to sealingly engage said seal stator first face; and a second side having at least a partially roughened surface and one or more fins thereon. 2. The air turbine starter of claim 1, wherein the roughened surface forms a fractal pattern on the seal rotor second side.3. The air turbine starter of claim 1, wherein each fin forms a fractal pattern.4. The air turbine starter of claim 1, wherein each fin is adapted to impel a fluid.5. The air turbine starter of claim 4, wherein the seal rotor further comprises an annular well formed on the second side, and wherein each fin has a surface aligned substantially tangentially to the annular well.6. The air turbine starter of claim 1, further comprising one or more channels formed on the seal rotor second side, each channel disposed between two fins.7. The air turbine starter of claim 6, wherein each channel is configured such that a fluid flowing through each channel forms a boundary layer adjacent to the surface of the channel, the channel comprising a width greater than twice the thickness of the boundary layer of the fluid propelled.8. The air turbine starter of claim 6, wherein said seal rotor has a circumferential arc and each channel has a width, the sum of the channel widths comprising between one percent and eighty percent of the circumferential arc of the seal rotor.9. The air turbine starter of claim 6, wherein at least a portion of each channel extends axially through the rotor between the seal rotor first and second sides proximate a portion of the first face of the seal stator.10. A seal assembly for sealing an opening through which a rotating shaft extends, comprising:a seal case mounted proximate the opening; a seal stator mounted within the seal case, the seal stator having at least a first face and a second face; and a seal rotor assembly adapted to the mounted on the rotating shaft, the seal rotor assembly having: a first side adapted to sealingly engage said seal stator first face; and a second side having at least a partially roughened surface and one or more fins thereon. 11. The seal assembly of claim 10, wherein the roughened surface forms a fractal pattern on the seal rotor second side.12. The seal assembly of claim 10, wherein each fin forms a fractal pattern.13. The seal assembly of claim 10, wherein each fin is adapted to impel a fluid.14. The seal assembly of claim 13, wherein the seal rotor further comprises an annular well formed on the second side, and wherein each fin has a surface aligned substantially tangentially to the annular well.15. The seal assembly of claim 10, further comprising one or more channels formed on the seal rotor second side, each channel disposed between two fins.16. The seal assembly of claim 15, wherein each channel is configured such that a fluid flowing through each channel forms a boundary layer adjacent to the surface of the channel, the channel comprising a width greater than twice the thickness of the boundary layer of the fluid propelled.17. The seal assembly of claim 15, wherein said seal rotor has a circumferential arc and each channel has a width, the sum of the channel widths comprising between one percent and eighty percent of the circumferential arc of the meal rotor.18. The seal assembly of claim 15, wherein a portion of each channel extends axially through the rotor between the seal rotor first and second sides proximate a portion of the first face of the stator.19. A rotor for a face seal having a stator including a sealing face, comprising:a substantially annular body having a first side and a second side, the first side adapted to sealingly engage the sealing face of the stator; and one or more fins and at least a partially roughened surface on the second side of the body. 20. The rotor of claim 19, wherein the fins are machined from the material of the seal rotor.21. The rotor of claim 19, wherein the roughened surface forms a fractal pattern on the seal rotor second side.22. The rotor of claim 19, wherein each fin forms a fractal pattern.23. The rotor of claim 19, wherein each fin is adapted to impel a fluid.24. The rotor of claim 23, wherein the seal rotor further includes an annular well formed on the second side, and wherein each fin has a surface aligned substantially tangentially to the annular well.25. The rotor of claim 19, further comprising one or more channels formed on the seal rotor second side, each channel disposed between two fins.26. The rotor of claim 25, wherein each channel is configured such that a fluid flowing through each channel forms a boundary layer adjacent to the surface of the channel, the channel comprising a width equal to or greater than twice the thickness of the boundary layer of the fluid propelled.27. The rotor of claim 25, wherein a portion of each channel extends axially through the rotor between the seal rotor first and second sides proximate a portion of the first face of the stator.28. The rotor of claim 19, further comprising one or more channels formed on the seal rotor second side, each channel of said one or more channels disposed between two fins, wherein said each channel is configured to vary in depth over its length.29. The rotor of claim 19, wherein said seal rotor further comprises an outer peripheral surface between said first side and said second side and an annular well formed in said second side, the seal rotor further comprising one or more radial holes penetrating said outer peripheral surface.30. The rotor of claim 29, wherein said holes penetrate through said seal rotor to said annular well.31. The rotor of claim 29, wherein said holes penetrate through said seal rotor to at least one of said first side and said second side of said seal rotor.32. The rotor of claim 19, further comprising one or more channels formed on the seal rotor second side by one or more spiral fins on said seal rotor second side.33. The rotor of claim 19, further comprising one or more channels formed on the seal rotor second side, each channel disposed between two fins, said fins adapted to meet particular operational requirements for heat transfer and fluid flow control.34. An apparatus having a shaft rotationally mounted therein and extending between a first volume and a second volume, the apparatus comprising:a web disposed between the first and second volumes, the web having an opening through which the shaft extends; a seal stator mounted on the web proximate the opening; and a seal rotor, mounted on the shaft and disposed at least partially within the first volume and proximate the opening, the seal rotor having a first side adapted to sealingly engage the seal stator and a second side having one or more fins and at least a partially roughened surface. 35. An apparatus having a shaft rotationally mounted therein and extending between a first volume and a second volume, the apparatus comprising:a web disposed between the first and second volumes, the web having an opening through which the shaft extends; a seal stator mounted on the web proximate the opening; and a seal rotor, mounted on the shaft and disposed at least partially within the first volume and proximate the opening, the seal rotor having a first side adapted to sealingly engage the seal stator, a second side having more than ten fins, a partially roughened surface, and a circumferential arc. 36. The apparatus of claim 35, wherein said second side of said seal rotor comprises a plurality of channels between said more than ten fins, each channel having a width, the sum of all channel widths comprising between one percent and eighty percent of said circumferential arc.37. An apparatus having a shaft rotationally mounted therein and extending between a first volume and a second volume, the apparatus comprising:a web disposed between the first and second volumes, the web having an opening through which the shaft extends; a seal stator mounted on the web proximate the opening; and a seal rotor, mounted on the shaft and disposed at least partially within the first volume and proximate the opening, the seal rotor having a first side adapted to sealingly engage the seal stator, a second side having a partially roughened surface, a circumferential arc, and a plurality of channels, each channel having a width, the sum of all said widths of said channels comprising between one percent and eighty percent of said circumferential arc. 38. The apparatus of claim 37, wherein each two channels of said plurality of channels are separated by a fin, said seal rotor second side comprising more than ten fins.39. The apparatus of claim 37, wherein the first aide of the seal rotor is adapted to generate a fluid film between the stator sealing face from the rotor first side when said rotor rotates.40. The apparatus of claim 37, wherein the stator has a stator sealing face adapted to generate a fluid film between said stator sealing face and the rotor first side when said rotor rotates.41. In an air turbine starter including a housing, a turbine wheel having a turbine shaft rotationally mounted within the housing, a seal rotor mounted on the turbine shaft, and a seal stator assembly mounted to the housing and surrounding the shaft and having at least a portion thereof sealingly engaging a face of the seal rotor, a method of modifying the air turbine starter, the method comprising:removing the seal rotor from the turbine shaft; and mounting a new seal rotor on the turbine shaft, wherein the new seal rotor assembly includes said seal rotor having: a first side adapted to sealingly engage said seal stator first face; and a second side having at least a partially roughened surface and one or more fins thereon.
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