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EP1413764A2 - Assemblage de roue de compresseur - Google Patents

Assemblage de roue de compresseur Download PDF

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Publication number
EP1413764A2
EP1413764A2 EP03256586A EP03256586A EP1413764A2 EP 1413764 A2 EP1413764 A2 EP 1413764A2 EP 03256586 A EP03256586 A EP 03256586A EP 03256586 A EP03256586 A EP 03256586A EP 1413764 A2 EP1413764 A2 EP 1413764A2
Authority
EP
European Patent Office
Prior art keywords
bore
shaft
compressor wheel
axial
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03256586A
Other languages
German (de)
English (en)
Other versions
EP1413764A3 (fr
Inventor
Anthony c/o Holset engineering co. LTD Billington
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cummins Turbo Technologies Ltd
Original Assignee
Holset Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Holset Engineering Co Ltd filed Critical Holset Engineering Co Ltd
Publication of EP1413764A2 publication Critical patent/EP1413764A2/fr
Publication of EP1413764A3 publication Critical patent/EP1413764A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts

Definitions

  • This invention relates to the assembly of a compressor wheel to a rotating shaft.
  • the invention relates to the compressor wheel assembly of a turbocharger.
  • Turbochargers are well known devices for supplying air to the intake of an internal combustion engine at pressures above atmospheric (boost pressures).
  • a conventional turbocharger essentially comprises an exhaust gas driven turbine wheel mounted on a rotatable shaft within a turbine housing. Rotation of the turbine wheel rotates a compressor wheel mounted on the other end of the shaft within a compressor housing. The compressor wheel delivers compressed air to the intake manifold of the engine, thereby increasing engine power.
  • the shaft is supported on journal and thrust bearings located within a central bearing housing connected between the turbine and compressor wheel housings.
  • a conventional compressor wheel comprises an array of blades extending from a central hub provided with a bore for receiving one end of the turbocharger shaft.
  • the compressor wheel is secured to the shaft by a nut which threads onto the end of the shaft where it extends through the wheel bore, and bears against the nose end of the wheel to clamp the wheel against a shaft shoulder (or other radially extending abutment that rotates with the shaft).
  • a compressor wheel assembly comprising a compressor wheel mounted to a rotating shaft, the shaft extending through a bore provided along the rotational axis of the wheel, wherein the bore has a first axial portion corresponding in diameter to the diameter of the shaft, and a second axial portion of enlarged diameter, such that the inner surface of the second portion of the bore is radially spaced from the shaft.
  • the wheel is supported on the shaft by the first axial portion of the bore only. This portion of the bore can be machined to the required diameter along the length of the wheel axis over which the required degree of accuracy can be readily maintained. The remainder of the bore is simply enlarged so that it will not interfere with the concentric mounting of the wheel on the shaft.
  • FIG. 1 illustrates the basic components of a conventional centripetal type turbocharger.
  • the turbocharger comprises a turbine 1 joined to a compressor 2 via a central bearing housing 3.
  • the turbine 1 comprises a turbine housing 4 which houses a turbine wheel 5.
  • the compressor 2 comprises a compressor housing 6 which houses a compressor wheel 7.
  • the turbine wheel 5 and compressor wheel 7 are mounted on opposite ends of a common shaft 8 which is supported on bearing assemblies 9 within the bearing housing 3.
  • the turbine housing 4 is provided with an exhaust gas inlet 10 and an exhaust gas outlet 11.
  • the inlet 10 directs incoming exhaust gas to an annular inlet chamber 12 surrounding the turbine wheel 5.
  • the exhaust gas flows through the turbine and into the outlet 11 via a circular outlet opening which is co-axial with the turbine wheel 5.
  • Rotation of the turbine wheel 5 rotates the compressor wheel 7 which draws in air through axial inlet 13 and delivers compressed air to the engine intake via an annular outlet volute 14.
  • the compressor wheel comprises a plurality of blades 15 extending from a central hub 16 which is provided with a through bore to receive one end of the shaft 8.
  • the shaft 8 extends slightly from the nose of the compressor wheel 7 and is threaded to receive a flanged nut 17 which bears against the compressor wheel nose to clamp the compressor wheel 7 against a thrust bearing and oil seal assembly 18.
  • Details of the thrust bearing/oil seal assembly may vary and are not important to understanding of the compressor wheel mounting arrangement. Essentially, the compressor wheel 7 is prevented from slipping on the shaft 8 by the clamping force applied by the nut 17.
  • Figure 2 illustrates a compressor wheel assembly in accordance with the present invention. Details of the shaft 8, thrust bearing and seal assembly 18, and clamp nut 17 may be entirely conventional, as for instance illustrated in Figure 1.
  • the bore through the compressor wheel is radially stepped so that it has two different diameter axial portions 21 and 22.
  • the first axial portion 21 has a relatively small diameter corresponding to the outer diameter of the shaft 8.
  • the second axial portion 22 has an enlarged diameter so that its inner surface is radially spaced from the shaft 8.
  • the compressor wheel is thus supported on the shaft 8 along the length of the first portion 21 of the bore only.
  • the enlarged portion of the bore 22, is formed in the nose region of the wheel where wheel stresses are lower and thus does not adversely effect operation of the wheel.
  • a relatively small diameter bore of a diameter required to match the shaft 8 is machined in to the compressor wheel to a maximum length which is shorter than the axial length of the wheel at its axis, but which can be readily machined with the required accuracy.
  • the through bore is then completed by machining the enlarged diameter second portion in the nose region of the wheel.
  • a cylindrical sleeve may be fitted in to the relatively large diameter portion of the through bore, the sleeve having an inner diameter matching the diameter of the wheel to provide further support for the wheel on the shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Supercharger (AREA)
  • Compressor (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP03256586A 2002-10-24 2003-10-20 Assemblage de roue de compresseur Withdrawn EP1413764A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0224726.0A GB0224726D0 (en) 2002-10-24 2002-10-24 Compressor wheel assembly
GB0224726 2002-10-24

Publications (2)

Publication Number Publication Date
EP1413764A2 true EP1413764A2 (fr) 2004-04-28
EP1413764A3 EP1413764A3 (fr) 2005-04-13

Family

ID=9946478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03256586A Withdrawn EP1413764A3 (fr) 2002-10-24 2003-10-20 Assemblage de roue de compresseur

Country Status (6)

Country Link
US (1) US20040126251A1 (fr)
EP (1) EP1413764A3 (fr)
JP (1) JP2004144096A (fr)
KR (1) KR20040036657A (fr)
CN (1) CN1499083A (fr)
GB (1) GB0224726D0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012045531A1 (fr) * 2010-10-05 2012-04-12 Bosch Mahle Turbo Systems Gmbh & Co. Kg Dispositif de suralimentation

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0224727D0 (en) * 2002-10-24 2002-12-04 Holset Engineering Co Compressor wheel assembly
GB0224723D0 (en) * 2002-10-24 2002-12-04 Holset Engineering Co Compressor wheel assembly
GB0224721D0 (en) * 2002-10-24 2002-12-04 Holset Engineering Co Compressor wheel assembly
GB0425088D0 (en) 2004-11-13 2004-12-15 Holset Engineering Co Compressor wheel
US20070059188A1 (en) * 2005-09-09 2007-03-15 Borgwarner Inc. Aerodynamically enhanced bearing housing pocket geometry
JP4053563B2 (ja) * 2005-12-01 2008-02-27 ファナック株式会社 流体機械
JP4826417B2 (ja) * 2006-09-29 2011-11-30 株式会社ジェイテクト 過給器
ITMI20071100A1 (it) * 2007-05-30 2008-11-30 Nuovo Pignone Spa Sistema di ancoraggio per le giranti di una macchina rotativa a fluido
DE102010020213A1 (de) * 2010-05-12 2011-11-17 Bosch Mahle Turbo Systems Gmbh & Co. Kg Ladevorrichtung, insbesondere Abgasturbolader für ein Kraftfahrzeug
KR101102567B1 (ko) * 2010-10-20 2012-01-04 케이넷(주) 가스 및 습기 차단용 블록
JP6777222B2 (ja) * 2017-03-22 2020-10-28 株式会社Ihi 回転体、過給機、および、回転体の製造方法
CN109612863A (zh) * 2018-12-12 2019-04-12 中国北方发动机研究所(天津) 一种增压器压气机叶轮磨损试验验证装置
CN113090570B (zh) * 2020-01-09 2024-10-18 珠海格力电器股份有限公司 压缩机转子组件、压缩机和冷媒循环系统
KR102419842B1 (ko) 2021-09-24 2022-07-12 주식회사 제이더블유테크 터보차저용 컴프레셔 휠 및 이의 제조 방법

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2377740A (en) * 1944-03-31 1945-06-05 Gen Electric Centrifugal compressor
US2860827A (en) * 1953-06-08 1958-11-18 Garrett Corp Turbosupercharger
US3200753A (en) * 1963-02-07 1965-08-17 Martin Marietta Corp Turbo-boost pump
US3601501A (en) * 1970-02-26 1971-08-24 John G Johnson Gas compressor impeller and shaft assembly
BE787539A (fr) * 1971-08-27 1973-02-14 Alsthom Cgee Elements constitutifs d'un rotor soude
DE2829150A1 (de) * 1978-07-03 1980-01-24 Barmag Barmer Maschf Abgasturbolader
DE3268013D1 (en) * 1981-08-18 1986-01-30 Bbc Brown Boveri & Cie Exhaust-gas turbocharger with bearings between turbine and compressor
US5163816A (en) * 1991-07-12 1992-11-17 General Motors Corporation Wheel lock, centering and drive means and turbocharger impeller combination
JP3777648B2 (ja) * 1996-04-03 2006-05-24 石川島播磨重工業株式会社 羽根車の締結構造
US6017184A (en) * 1997-08-06 2000-01-25 Allied Signal Inc. Turbocharger integrated bearing system
US5895204A (en) * 1997-08-06 1999-04-20 Carrier Corporation Drive positioning mechanism for a variable pipe diffuser
DE19736333C1 (de) * 1997-08-21 1999-03-04 Man B & W Diesel Ag Befestigung eines Laufrades einer Strömungsmaschine an einer Welle
GB0224727D0 (en) * 2002-10-24 2002-12-04 Holset Engineering Co Compressor wheel assembly
GB0224723D0 (en) * 2002-10-24 2002-12-04 Holset Engineering Co Compressor wheel assembly
GB0224721D0 (en) * 2002-10-24 2002-12-04 Holset Engineering Co Compressor wheel assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012045531A1 (fr) * 2010-10-05 2012-04-12 Bosch Mahle Turbo Systems Gmbh & Co. Kg Dispositif de suralimentation

Also Published As

Publication number Publication date
US20040126251A1 (en) 2004-07-01
KR20040036657A (ko) 2004-04-30
JP2004144096A (ja) 2004-05-20
CN1499083A (zh) 2004-05-26
GB0224726D0 (en) 2002-12-04
EP1413764A3 (fr) 2005-04-13

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