EP1777417B1 - Turbocompresseur - Google Patents

Turbocompresseur Download PDF

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Publication number
EP1777417B1
EP1777417B1 EP05023173A EP05023173A EP1777417B1 EP 1777417 B1 EP1777417 B1 EP 1777417B1 EP 05023173 A EP05023173 A EP 05023173A EP 05023173 A EP05023173 A EP 05023173A EP 1777417 B1 EP1777417 B1 EP 1777417B1
Authority
EP
European Patent Office
Prior art keywords
bearing housing
sealing ring
turbocharger
sealing
end faces
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.)
Ceased
Application number
EP05023173A
Other languages
German (de)
English (en)
Other versions
EP1777417A1 (fr
Inventor
Dirk Frankenstein
Markus Schwerdtfeger
Bruno Ferling
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.)
Kaco GmbH and Co KG
BorgWarner Inc
Original Assignee
Kaco GmbH and Co KG
BorgWarner Inc
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 Kaco GmbH and Co KG, BorgWarner Inc filed Critical Kaco GmbH and Co KG
Priority to DE502005004418T priority Critical patent/DE502005004418D1/de
Priority to EP05023173A priority patent/EP1777417B1/fr
Priority to JP2008536947A priority patent/JP5106406B2/ja
Priority to PCT/EP2006/004908 priority patent/WO2007048451A1/fr
Priority to US12/091,123 priority patent/US8096774B2/en
Publication of EP1777417A1 publication Critical patent/EP1777417A1/fr
Application granted granted Critical
Publication of EP1777417B1 publication Critical patent/EP1777417B1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/057—Bearings hydrostatic; hydrodynamic

Definitions

  • the invention relates to a turbocharger according to the preamble of claim 1.
  • Such a turbocharger is for example from the US 4,420,160 known.
  • This turbocharger has a sealing device for sealing a bearing housing oil space with respect to a compressor chamber, which is provided with a sealing ring which is fixedly mounted in the bearing housing.
  • the sealing ring has frontal sealing surfaces, which bear against rotating mating surfaces to build up the sealing effect. Since a mechanical contact between the end faces of the sealing ring and the opposite with the compressor shaft rotating counter surfaces is thus required to build a sealing effect, mechanical wear and thus deterioration of the sealing effect, at least after a certain period of turbocharger inevitable.
  • an engine blower unit having a housing of an electric motor wherein a number of substantially axial bores extend through a scar of the blower impeller between a recess thereof and a low pressure portion.
  • turbocharger specified in the preamble of claim 1 way, which is provided with a sealing device, the at least significantly longer life reduced wear of the sealing surfaces and thus makes a better sealing effect possible.
  • the turbocharger according to the invention has in detail a sealing device, which has a sealing ring for sealing the bearing housing oil space with respect to the compressor chamber.
  • This sealing ring is arranged in the bearing housing and is provided with two end faces, which are used to construct the Sealing effect are provided with associated end faces of a disc on one side and a sealing bushing on another side, wherein the disc and the sealing bushing are mounted on the rotor shaft.
  • the sealing ring characterized in that the sealing ring is arranged with axial clearance on the rotor shaft between the disc and the sealing bush, the sealing ring usually places during assembly on one of the two end faces (ie either to the end face of the disc or to that of the sealing bushing).
  • the sealing ring separates from the contact position and forms depending on the existing pressure difference between the compressor and bearing housing side with the respective associated end face a conveying gap. It arises mainly through the conveyor, which forms the conveying gap with the respectively associated end face of the sealing ring, an air flow, which leads to the construction of air cushions between each of the non-rotating fixed end faces of the sealing ring and the associated rotating end faces of the disc or the sealing bushing.
  • this air flow prevents oil from flowing out of the bearing housing in the direction of the compressor and, on the other hand, direct mechanical contact between the end surfaces causing the seal is avoided, which at least considerably reduces the wear of the turbocharger according to the invention.
  • the mentioned air flow is achieved by the arranged in the two end faces of the sealing ring conveyors or conveyor structures which are oppositely oriented, which means that substantially either the compressor side conveyor promotes air from the outer periphery to the inner circumference, or the bearing housing side conveyor an air delivery from inner circumference to the outer periphery causes.
  • the air is directed into an axial gap between the inner circumference of the sealing ring and the sealing bush and can thus reach the bearing housing side from the compressor side. This creates an approximately U-shaped forced air flow, which, as said, the sealing effect and the avoidance of mechanical contact between the opposing fixed and rotating faces achieved.
  • the sealing device according to the invention is defined as an independently tradeable object.
  • a part of a turbocharger 15 according to the invention is shown, which has a bearing housing 7, which supports a rotor shaft 12 and which is connected to a compressor housing, of which only the compressor chamber 14 is visible.
  • the turbocharger has, as usual, a turbine with a turbine housing, which, however, as well as the entire compressor side, in Fig. 1 not shown, since these parts are not required for the explanation of the present invention.
  • Fig. 1 further shows a sealing device, which is illustrated in its entirety by the reference numeral 20.
  • the sealing device 20 is used to seal a bearing housing oil chamber 13 with respect to the compressor chamber 14 of the compressor housing of the turbocharger 15, not shown.
  • the sealing device 20 has a sealing ring 1 which is stationary, ie not rotating, arranged in the bearing housing 7 and has two end faces 17 and 17 '. These end faces 17 and 17 'act to build up the sealing effect of the sealing device 20 with end faces 10 and 11 of a disc 9 and a sealing bushing 16 together.
  • Fig. 1 illustrates here that the disc 9 is disposed adjacent to the compressor chamber 14, and that the sealing bush 16 has two flanges 16A and 16B, which according to the in Fig. 1 chosen representation arranged right from the sealing ring 1 and spaced from each other.
  • the flanges 16A and 16B guide a thrust bearing 21.
  • the flange 16A, together with the disc 9, further defines a groove in which the sealing ring 1 is inserted with axial clearance, that is, play in the longitudinal direction of the rotor shaft 12.
  • conveyors 2 and 3 are arranged, wherein the conveyor 2 is the compressor side, while on the bearing housing side 3, the conveyor 3 is arranged.
  • These conveyors are from the FIGS. 2 and 3 seen. They are formed in the example of by webs 18 and 18 'limited grooves 19 and 19', which are oppositely oriented, which means that the compressor-side conveyor 2 promotes air from the outer periphery to the inner periphery, while the bearing housing side conveyor 3 air from inner circumference promotes the outer circumference.
  • the sealing ring 1 is floatingly mounted in the bearing housing 7 for this purpose. At the in Fig. 1 illustrated particularly preferred embodiment, the sealing ring 1 is connected to an end portion 5A of an elastomeric molded part 5, which is fixed with its other end portion 5B in the bearing housing 7.
  • connection between the sealing ring and the end region 5 A can be designed positively, non-positively or frictionally. A combination of these types of connections is possible.
  • Fig. 1 further clarifies that the end portion 5 A is pressed by a first locking ring 4 to the sealing ring 1.
  • the other end portion 5B of the elastomeric molded part 5 is fixed by a second locking ring 6 in a bore of the bearing housing 7 or in an attachment 8, which is a kind of cover with which the opening of the bearing housing 7 is closed, as can be seen in detail from the graphic representation of the Fig. 1 opens.
  • the above-described sealing device 20 seals the bearing housing oil chamber 13 from the compressor chamber 14.
  • the sealing function is achieved here by the sealing ring 1, which is disposed between the simultaneously rotating end faces 10 and 11 of the disc 9 and the annular flange 16A.
  • the sealing ring 1 usually sets to one of the two said end faces 10 and 11 at.
  • an air cushion between the fixed end face 17 of the sealing ring 1 and the rotating end face 11 constructed or the air cushion is through the Conveying effect between the fixed end face 17 'and the rotating end face 10 is formed.
  • the conveyors or conveyor structures 2 and 3 an air flow in the direction of the bearing housing oil space 13, which prevents ⁇ 1 from flowing from the bearing housing 7 in the direction of the compressor.
  • the locking ring 4 which presses the elastomeric molded part 5 to the sealing ring 1, can be additionally used by appropriate design (recesses, tabs, cams, etc.) for the positive torque transmission between the sealing ring 1 and the bearing housing 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Claims (11)

  1. Turbocompresseur (15), comprenant :
    - un logement de palier (7) qui loge un arbre de rotor (12) et présente une chambre d'huile de logement de palier (13),
    - un logement de compresseur qui est relié au logement de palier (7) et présente une chambre de compresseur (14) ; et
    - un dispositif d'étanchéité (20) prévu pour assurer l'étanchéité de la chambre d'huile de logement de palier (13) par rapport à la chambre de compresseur (14) et présentant une bague d'étanchéité (1) qui est disposée dans le logement de palier (7) et présente deux faces avant (17, 17') qui coopèrent avec des faces avant associées (10 ou 11) d'un disque (9) ou d'un manchon d'étanchéité (16) et qui sont fixées à l'arbre de rotor (12),
    caractérisé en ce que
    - la bague d'étanchéité (1) est disposée avec du jeu axial sur l'arbre de rotor (12) entre le disque (9) et le manchon d'étanchéité (16) ; et
    - des dispositifs de débit d'air (2, 3) orientés à l'opposé sont disposés dans ou sur les faces avant (17, 17') de la bague d'étanchéité (1).
  2. Turbocompresseur selon la revendication 1, caractérisé en ce que le disque (9) et le manchon d'étanchéité (16) délimitent une rainure dans laquelle est disposée la bague d'étanchéité (1).
  3. Turbocompresseur selon la revendication 1 ou 2, caractérisé en ce que la bague d'étanchéité (1) est logée de façon flottante dans le logement de palier (7).
  4. Turbocompresseur selon la revendication 3, caractérisé en ce que la bague d'étanchéité (1) est reliée à une zone d'extrémité (5A) d'une pièce moulée élastomère (5) qui peut être fixée par son autre zone d'extrémité (5B) dans le logement de palier (7).
  5. Turbocompresseur selon la revendication 4, caractérisé en ce que la bague d'étanchéité (1) est reliée à ladite une zone d'extrémité (5A) de la pièce moulée élastomère (5) par complémentarité de forme, par adhérence et par friction ou par une combinaison de ces types de raccordement.
  6. Turbocompresseur selon l'une quelconque des revendications 3 à 5, caractérisé en ce que ladite une zone d'extrémité (5A) est pressée contre la bague d'étanchéité (1) par un premier circlip (4).
  7. Turbocompresseur selon l'une quelconque des revendications 4 à 6, caractérisé en ce que ladite autre zone d'extrémité (5B) peut être fixée par un deuxième circlip (6) dans un alésage du logement de palier (7) ou dans une pièce rapportée (8) du logement de palier (7).
  8. Turbocompresseur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les dispositifs de débit (2, 3) sont réalisés comme des rainures (19) dans ou sur les faces avant (17, 17') de la bague d'étanchéité (1).
  9. Turbocompresseur selon la revendication 8, caractérisé en ce que les rainures (19, 19') sont délimitées par des passages conducteurs d'air (18, 18') disposés sur les faces avant (17, 17') de la bague d'étanchéité (1).
  10. Dispositif d'étanchéité (20) pour un turbocompresseur (15) qui présente un logement de palier (7), un arbre de rotor (12) logé dans le logement de palier (7) et une chambre d'huile de logement de palier (13) se trouvant dans le logement de palier (7) ainsi qu'un logement de compresseur avec une chambre de compresseur (14), dans lequel le dispositif d'étanchéité (20) présente une bague d'étanchéité (1) avec deux faces avant (17, 17'),
    caractérisé en ce que
    - la bague d'étanchéité (1) présente des dispositifs de débit d'air (2, 3), orientés à l'opposé, dans ou sur les faces avant (17, 17') ; et
    - la bague d'étanchéité (1) peut être placée avec du jeu axial sur l'arbre de rotor (12) du turbocompresseur (15) entre un disque (9) et un manchon d'étanchéité (16) du turbocompresseur (15).
  11. Dispositif d'étanchéité selon la revendication 10, caractérisé par au moins l'une des particularités des revendications 2 à 9.
EP05023173A 2005-10-24 2005-10-24 Turbocompresseur Ceased EP1777417B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE502005004418T DE502005004418D1 (de) 2005-10-24 2005-10-24 Turbolader
EP05023173A EP1777417B1 (fr) 2005-10-24 2005-10-24 Turbocompresseur
JP2008536947A JP5106406B2 (ja) 2005-10-24 2006-05-23 ターボチャージャ
PCT/EP2006/004908 WO2007048451A1 (fr) 2005-10-24 2006-05-23 Tubocompresseur
US12/091,123 US8096774B2 (en) 2005-10-24 2006-05-23 Turbocharger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05023173A EP1777417B1 (fr) 2005-10-24 2005-10-24 Turbocompresseur

Publications (2)

Publication Number Publication Date
EP1777417A1 EP1777417A1 (fr) 2007-04-25
EP1777417B1 true EP1777417B1 (fr) 2008-06-11

Family

ID=35610220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05023173A Ceased EP1777417B1 (fr) 2005-10-24 2005-10-24 Turbocompresseur

Country Status (5)

Country Link
US (1) US8096774B2 (fr)
EP (1) EP1777417B1 (fr)
JP (1) JP5106406B2 (fr)
DE (1) DE502005004418D1 (fr)
WO (1) WO2007048451A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9249887B2 (en) * 2010-08-03 2016-02-02 Dresser-Rand Company Low deflection bi-metal rotor seals
US20150125263A1 (en) * 2012-05-16 2015-05-07 Borgwarner Inc. Flinger oil seal and turbocharger incorporating the same
WO2014003057A1 (fr) * 2012-06-29 2014-01-03 株式会社Ihi Compresseur à suralimentation
CN103758589A (zh) * 2013-12-30 2014-04-30 常州环能涡轮动力股份有限公司 汽油机用涡轮增压器石墨密封装置
FR3024492B1 (fr) * 2014-07-29 2019-08-23 Safran Aircraft Engines Element comprenant un stator et un rotor de turbomachine avec un joint d'etancheite et test de ce joint
US10274087B2 (en) * 2015-09-25 2019-04-30 Flowserve Management Company Reverse pressure capable mechanical seal
CN105240308A (zh) * 2015-11-10 2016-01-13 湖南天雁机械有限责任公司 涡轮增压器压气机端密封套

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407994A (en) * 1966-11-15 1968-10-29 Hoover Co Shaft seal
US4196910A (en) * 1977-05-19 1980-04-08 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Shaft sealing device for turbocharger
US4268229A (en) * 1979-04-19 1981-05-19 The Garrett Corporation Turbocharger shaft seal arrangement
JPS5613513U (fr) * 1979-07-10 1981-02-05
US4420160A (en) 1980-03-10 1983-12-13 The Garrett Corporation Face seal system
FR2503478A2 (fr) * 1981-04-03 1982-10-08 Etri Sa Ventilateur electrique, notamment du type plat
US4502693A (en) * 1984-07-19 1985-03-05 Allis-Chalmers Corporation Bushing seal with dual restricted fluid passages
JPS63297734A (ja) * 1987-05-29 1988-12-05 Canon Inc タ−ボ過給機
DE3830470A1 (de) * 1988-09-08 1990-03-15 Mtu Friedrichshafen Gmbh Dichtungseinrichtung zwischen welle und gehaeuse einer stroemungsmaschine mit mindestens einem laufrad
US4986733A (en) * 1989-10-30 1991-01-22 Allied-Signal, Inc. Turbocharger compressor wheel assembly with boreless hub compressor wheel
JPH0874590A (ja) * 1994-09-01 1996-03-19 Toyota Motor Corp 過給機の軸封構造
US5890881A (en) * 1996-11-27 1999-04-06 Alliedsignal Inc. Pressure balanced turbocharger rotating seal
GB2359863B (en) * 2000-03-04 2003-03-26 Alstom Turbocharger
GB0108119D0 (en) * 2001-03-30 2001-05-23 Holset Engineering Co Oil control device
GB0218092D0 (en) * 2002-08-03 2002-09-11 Holset Engineering Co Turbocharger

Also Published As

Publication number Publication date
US8096774B2 (en) 2012-01-17
DE502005004418D1 (de) 2008-07-24
WO2007048451A1 (fr) 2007-05-03
JP5106406B2 (ja) 2012-12-26
JP2009512815A (ja) 2009-03-26
EP1777417A1 (fr) 2007-04-25
US20080317596A1 (en) 2008-12-25

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