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Pressure-assisted electromagnetic thrust bearing

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02C-006/18   
미국특허분류(USC) 60/03907; 415/104; 415/105; 415/106; 417/365; 310/0905
출원번호 US-0384497 (1999-08-27)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Woodard, Emhardt, Naughton, Moriarty & McNett
인용정보 피인용 횟수 : 15  인용 특허 : 29
초록

A thrust compensation apparatus for high-speed rotating machinery includes an electromagnetic thrust bearing having a thrust rotor and a thrust stator, a first chamber filled with a pressurized medium on one side of the bearing, and a second chamber on the other side of the bearing. The pressure differential across the bearing augments the electromagnetic force between the rotor and stator in order to counteract the axial thrust load of the high-speed rotating machinery.

대표
청구항

1. The apparatus wherein said first medium is air.

이 특허에 인용된 특허 (29)

  1. Girault Jean-Philippe (Tourny FRX). Active radial magnetic bearing combined with a back-up bearing. USP1992065126612.
  2. Andres Michael (Rockford IL) Coons Terry L. (Dayton OH). Air cycle machine with magnetic bearings. USP1994055310311.
  3. Lorenzen Heinrich (Untersiggenthal CHX). Axially thrust-compensated turbo machine. USP1994055312225.
  4. Katsuta Seigo (Kanagawa JPX) Kanemitsu Yoichi (Kanagawa JPX) Matsumura Masao (Kanagawa JPX). Centrifugal pump having magnet bearing. USP1992075127792.
  5. Bear Clayton (Calgary CAX) Harris Timothy A. (Calgary CAX). Control system for regulating the axial loading of a rotor of a fluid machine. USP1992085141389.
  6. Kulle Vaclav (Blind Bay CAX) Peterson Robert A. (Calgary CAX). Gas compressor having a dry gas seal on an overhung impeller shaft. USP1991075028204.
  7. Kulle Vaclav (Blind Bay CAX) Peterson Robert A. (Calgary CAX). Gas compressor having dry gas seals. USP1991024993917.
  8. Haramura Shigenori,GBX ; Birch Peter H.,GBX ; Norton Mark G.,GBX ; Raine Michael J.,GBX ; Reynolds Graham A.,GBX. Gas turbine engine. USP1998115836739.
  9. Henry Mark S. ; King Brian P.. High speed, high temperature hybrid magnetic thrust bearing. USP1998055749700.
  10. Ando Shigenori (Narashino JPX) Iijima Ryuji (Narashino JPX). Machining apparatus having a main spindle supported by magnetic bearings. USP1991065027280.
  11. Pinkerton Joseph F. (Austin TX). Magnetic bearing and method utilizing movable closed conductive loops. USP1994045302874.
  12. Littlefield David E. (Lake Jackson TX). Magnetic bearing assembly. USP1991014988906.
  13. New Nigel H. (Harrow GBX). Magnetic bearing back-up. USP1994105355040.
  14. Yamamura Akira (Tokyo JPX). Magnetic bearing device. USP1991095046151.
  15. Vaillant de Guelis Hubert (Aubergenville FRX) Roland Jean-Pierre (Vienne en Arthie FRX) Jamain Patrice (Maule FRX). Magnetic bearing for active centering of a body movable relative to a static body with respect to at least one axis. USP1990044918345.
  16. Burns Donald W. (Danville IN) Fagan ; Jr. John Robert (Zionsville IN). Magnetic bearings as actuation for active compressor stability control. USP1997085658125.
  17. Lewis David W. (Charlottesville VA) Humphris Robert R. (Charlottesville VA) Maslen Eric H. (Charlottesville VA) Allaire Paul E. (Charlottesville VA) Williams Ronald D. (Charlottesville VA). Magnetic bearings for pumps, compressors and other rotating machinery. USP1994105355042.
  18. Hinckley Charles J. (Hardwick MA). Magnetic drive pump. USP1993045201642.
  19. Richardson ; Jr. Hubert (Brooklyn MI). Orbiting rotary compressor with adjustable eccentric. USP1993085236318.
  20. Groom Nelson J. (White Marsh VA). Permanent magnet flux-biased magnetic actuator with flux feedback. USP1991035003211.
  21. Johnston Richard P.. System and method of controlling thrust forces on a thrust bearing in a rotating structure of a gas turbine engine. USP1998045735666.
  22. Hustak ; Jr. Jerome F. (Olean NY) Peer David J. (Olean NY). Thrust compensating apparatus. USP1992045104284.
  23. Andrews Frank X. (Mission Viejo CA). Thrust control system for fluid handling rotary apparatus. USP1993095248239.
  24. Hines William R. (Montgomery OH). Tractor steam piston balancing. USP1989094864810.
  25. Miura Haruo (Ibaraki JPX) Takeda Kazuo (Ibaraki JPX). Turbo compressor and method of controlling the same. USP1994055312226.
  26. Weimer Matthew M. (Indianapolis IN) Klusman Steven A. (Indianapolis IN). Turbomachine with active tip clearance control. USP1993115263816.
  27. Miyazaki Masayuki (Amagasaki JPX) Kitora Yoshihisa (Amagasaki JPX) Sekiya Shin (Amagasaki JPX) Taketoh Kiyoshi (Amagasaki JPX) Itaya Yoshiyuki (Fukuoka JPX). Turbomolecular pump. USP1988114787829.
  28. Tsumaki Nobuo (Ibaraki JPX) Ueda Shinjiro (Abiko JPX) Noda Kousuke (Tsuchiura JPX) Izumi Hideki (Tsuchiura JPX) Matsushita Osami (Ibaraki JPX) Okawada Takeshi (Ibaraki JPX). Turbomolecular pump. USP1986044579508.
  29. Isenberg Gerhard (Dachau DT) Tuzinsky Wolfgang (Munich DT). Vacuum pump having a rotor supported in the interior of its casing. USP1977114057369.

이 특허를 인용한 특허 피인용횟수: 15

  1. Tecza, Joseph A.; Kidd, H. Allan. Circulating dielectric oil cooling system for canned bearings and canned electronics. USP2017019551349.
  2. Maier, William C.; Peer, David J.. Compact shaft support device for turbomachines. USP2011118061970.
  3. Schwarz, Frederick M.; Glahn, Jorn A.. Fan drive thrust balance. USP20181010107131.
  4. Klaass, Reinhard M.; Takeuchi, Donald I.; Schenk, Bjoern. Gearless/oilless gas turbine engine. USP2005046881027.
  5. Keller, Thomas; Meyer, Gerhard. Load-relieving device. USP20181010094388.
  6. Steinmeyer, Florian. Magnetic bearing for suspending a rotating shaft using high Tc superconducting material. USP2004076762522.
  7. Griffin, Timothy R.; Gilarranz, Jose L.. Method for on-line detection of liquid and potential for the occurrence of resistance to ground faults in active magnetic bearing systems. USP2015038994237.
  8. Gilarranz, Jose L.; Griffin, Timothy R.. Method for on-line detection of resistance-to-ground faults in active magnetic bearing systems. USP2015059024493.
  9. Epstein,Stanley W.. Onboard supplemental power system at varying high altitudes. USP2007067231770.
  10. Epstein,Stanley W.. Onboard supplemental power system at varying high altitudes. USP2006087089744.
  11. Epstein,Stanley W.. Onboard supplemental power system at varying high altitudes. USP2006097111462.
  12. Franconi, Robert; Banta, Paul; Lam, Cecilia Sum. Pressure and flow altitude compensated shutoff valve. USP2015079080687.
  13. Maier, Martin D.; Kidd, H. Allan. Segmented coast-down bearing for magnetic bearing systems. USP2014118876389.
  14. Nakazeki, Tsugito; Ozaki, Takayoshi; Yamada, Hiroyuki. Turbine unit for refrigerating/cooling air cycle. USP2012078215898.
  15. Maier, Martin D.; Kidd, H. Allan. Whirl inhibiting coast-down bearing for magnetic bearing systems. USP2014108851756.

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