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특허 상세정보

Three bearing flexible shaft for high speed turbomachinery

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F01D-015/08   
미국특허분류(USC) 415/124.2; 415/060; 415/216.1; 416/244A
출원번호 US-0633591 (2009-12-08)
등록번호 US-8376690 (2013-02-19)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 1  인용 특허 : 10
초록

A three journal bearing supported shaft with a link between two of the bearings may allow for longer spacing between the wheels supported by the shaft. The flexible shaft may move one bending critical speed below the minimum operating speed of the shaft and the next bending critical speed above the maximum operating speed of the shaft, thus extending the speed range significantly. A tie rod may be used as the link in the shaft.

대표
청구항

1. A three-bearing-supported shaft comprising: a first shaft member;a second shaft member; anda tie rod connecting the first rigid shaft member with the second rigid shaft member, whereinthe tie rod is located between two of the three bearings supporting the shaft, and whereinthe tie rod has a greater propensity for bending than that of the first and second shaft members; whereinthe shaft supports four wheels wherein the four wheels are a fan, a compressor, and two turbines supported by the shaft. 2. The shaft of claim 1, wherein the tie rod is located b...

이 특허에 인용된 특허 (10)

  1. Merritt Brent J. (Westfield MA) Dziorny Paul J. (Manchester CT). Air cycle machine with heat isolation having back-to-back turbine and compressor rotors. USP1993105249934.
  2. Dziorny Paul J. (132 Strawberry La. Manchester CT 06040) McAuliffe Christopher (18 Kellogg St. Windsor CT 06095). Air cycle machine with interstage venting. USP1993075224842.
  3. McAuliffe Christopher (Windsor CT) Dziorny Paul J. (Manchester CT). Bearing cooling arrangement for air cycle machine. USP1992055113670.
  4. Bosley Robert W. (Cerritos CA). Compound shaft with flexible disk coupling. USP1997125697848.
  5. Muju, Sandeep; Sandoval, Robert S.. Curvic coupling fatigue life enhancement through unique compound root fillet design. USP2004016672966.
  6. Stewart Matthew J. ; Roberts Kenneth G. ; Weissert Dennis H. ; Bosley Robert W.. Double diaphragm compound shaft. USP1999105964663.
  7. Stewart Matthew J. ; Roberts Kenneth G. ; Weissert Dennis H. ; Bosley Robert W.. Double diaphragm compound shaft. USP2000036037687.
  8. Maher ; Jr. John F. (Enfield CT) Merritt Brent J. (Westfield MA) McAuliffe Christopher (Windsor CT) Dziorny Paul J. (Manchester CT). Four wheel air cycle machine. USP1994055309735.
  9. Stewart Matthew J. ; Roberts Kenneth G. ; Weissert Dennis H. ; Bosley Robert W.. Method of making double diaphragm compound shaft. USP2000086094799.
  10. Carter Michael E. ; Crabtree Ronald E. ; Emerson Terrence P. ; Moreno Arturo ; Morris Terry ; Rapozo Raymond ; Saville Marshall. Two spool air cycle machine having concentric shafts. USP2000116151909.