EP2366870A2 - Rotor d'un turbochargeur - Google Patents

Rotor d'un turbochargeur Download PDF

Info

Publication number
EP2366870A2
EP2366870A2 EP11157850A EP11157850A EP2366870A2 EP 2366870 A2 EP2366870 A2 EP 2366870A2 EP 11157850 A EP11157850 A EP 11157850A EP 11157850 A EP11157850 A EP 11157850A EP 2366870 A2 EP2366870 A2 EP 2366870A2
Authority
EP
European Patent Office
Prior art keywords
shaft
turbine wheel
rotor
intermediate piece
wheel
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.)
Granted
Application number
EP11157850A
Other languages
German (de)
English (en)
Other versions
EP2366870B1 (fr
EP2366870A3 (fr
Inventor
Klaus Czerwinski
Martin Schlegl
Thomas Berger
Oliver Gamm
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.)
BMTS Technology GmbH and Co KG
Original Assignee
Bosch Mahle Turbo Systems GmbH and Co KG
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 Bosch Mahle Turbo Systems GmbH and Co KG filed Critical Bosch Mahle Turbo Systems GmbH and Co KG
Publication of EP2366870A2 publication Critical patent/EP2366870A2/fr
Publication of EP2366870A3 publication Critical patent/EP2366870A3/fr
Application granted granted Critical
Publication of EP2366870B1 publication Critical patent/EP2366870B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • F01D5/063—Welded rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/025—Fixing blade carrying members on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/284—Selection of ceramic materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics
    • F05D2300/21—Oxide ceramics

Definitions

  • the present invention relates to a rotor for a charging device, in particular for an exhaust gas turbocharger, having a shaft carrying a turbine wheel and a compressor wheel according to the preamble of claim 1.
  • the invention also relates to a charging device equipped with such a rotor.
  • the invention additionally relates to a rotor for a charging device, according to the preamble of claims 8 and 10.
  • rotors are, for example, from the WO 2006/105891 A1 as well as from the US 4,557,704 known.
  • turbine / compressor wheels with an associated shaft are usually connected via thermal joining methods, for example electron beam or friction welding or soldering.
  • the parts to be joined are solid and the parts are joined in a separate production step from the actual parts production.
  • a local, often abrupt change of the material / structural properties and, consequently, a component weakening occur.
  • fusion joining method beam welding / soldering
  • the present invention therefore deals with the problem of providing a rotor of the generic type, an improved or at least one alternative embodiment, which does not have the disadvantages mentioned in the prior art in particular.
  • the present invention is based on the general idea to provide at least one porous, metallic or ceramic intermediate piece for connection, in particular, of a turbine wheel to a shaft of a rotor between the shaft and the turbine wheel, which is connected to the turbine wheel and / or the shaft via an infiltration process.
  • the said turbine wheel is Of course, by way of example also for a compressor wheel which can be connected in a similar manner to the shaft.
  • the porous intermediate piece can be sintered beforehand either by infiltration, for example during a casting process of the turbine wheel or by a casting process to the shaft or in a sintering process to the shaft or the turbine wheel and then connected to the second component by infiltration.
  • the invention offers the following advantages: It is possible to join a shaft and a turbine wheel which have completely different physical properties, such as a coefficient of thermal expansion, whereby mechanically unstable phases can form in the interface, especially in the case of conventional material joining.
  • the intermediate piece usually has a lower density than the turbine wheel or as the shaft, so that a center of gravity of the rotor is advantageously displaced in the direction of the compressor.
  • a heat wear resistance in the range of radial shaft seals can be increased due to a suitable material engineering design. It is particularly advantageous, however, that materials which have hitherto not been combinable can now be joined together reliably, that is to say they can be fastened to one another, wherein in the joining region no abrupt change in the material microstructural properties is to be feared, which could lead to undesired component weakening in this region.
  • the intermediate piece is formed as a metallic intermediate piece and materially connected to the shaft or the turbine wheel. This would be the optional option open, one of the two infiltration processes, that is to replace either the connection of the intermediate piece with the shaft or with the turbine wheel by a conventional cohesive connection.
  • a cohesive connection be selected on one of the two components.
  • the turbine wheel 2 can of course also be analogous to a compressor wheel not designated in detail.
  • at least between this and the shaft 3 at least one porous, metallic or ceramic intermediate piece 4 is provided for connecting the turbine wheel 2 to the shaft 3, which is connected to the turbine wheel 2 and / or to the shaft 3 via an infiltration process.
  • the intermediate piece 4 according to the invention can have an annular shape, as shown in FIGS Fig. 1 a and 1 b is shown, or a disc-like shape, as for example in Fig. 1c is drawn.
  • the intermediate piece 4 can be connected, for example, during the casting process of the turbine wheel 2 in / on this by means of infiltration and later via a casting process to the shaft 3.
  • the intermediate piece 4 sintered to the turbine wheel 2 or to the shaft 3 is.
  • the intermediate piece 4 is connected to the turbine wheel 2 by means of a sintering process, while the connection to the shaft 3 is produced in an adjoining infiltration process.
  • the intermediate piece 4 is formed as a metallic intermediate piece 4 and is first materially connected in a first connecting step with the shaft 3 or with the turbine wheel 2.
  • a Such material connection can be done, for example, by welding or soldering.
  • the intermediate piece 4 with the second component that is, for example. Connected to the turbine wheel 2 or the shaft 3 by means of infiltration process.
  • the intermediate piece 4 integrated in a back of the turbine wheel 2, for example, is embedded.
  • the rotor 1 produced according to the invention it is also possible, in particular, to reliably connect a turbine wheel 2 and a shaft 3 with completely different physical properties, for example thermal expansion coefficients. Due to the fact that the intermediate piece 4 usually has a lower density than the turbine wheel 2 or the shaft 3, moreover, a center of gravity of the rotor 1 is advantageously displaced in the direction of the compressor. Also, in the rotor 1 according to the invention, a material engineering embodiment of an optimal heat wear resistance of the rotor 1 in the region of radial shaft sealing rings can take place.
  • connection of the shaft 3 to the composite of turbine wheel 2 and spacer 4 can be represented in the following manner: casting (infiltrating a shaft material in a suitable device) or by local melting of the shaft material blank under axial pressure at the Stirnseitefugestelle.
  • the illustrated joining process can also be carried out in reverse order, so that first of all a sprue or an infiltration of the intermediate piece 4 takes place on the shaft 3 and then this compound formed from intermediate piece 4 and shaft 3 used as an insert in the casting process of the turbine wheel 2 and from Material of the turbine wheel 2 is infiltrated.
  • radially outwardly projecting webs 6 and / or on a receiving opening 5 of the turbine wheel 2 radially inwardly projecting webs 6 ' may be arranged, which at a sliding of the turbine wheel. 2 be plastically deformed on the shaft 3, as for example, in the right sectional view in Fig. 2 is shown.
  • the two sectional views are aligned with respect to a viewing plane orthogonal to the sectional image of the rotor 1.
  • the webs 6 ' are formed as longitudinal webs, wherein, of course, circumferential webs are conceivable.
  • the webs 6 'in this case have a small projection ü, so that an outer diameter of the shaft 3 is greater than an inner diameter of the receiving opening 5.
  • caulking of the turbine wheel 2 with the shaft 3 leads to a plastic deformation of the webs 6,6', whereby a positive and very stable connection can be achieved.
  • the reference I a not yet caulked area, while denoted by the reference numeral II already caulked area.
  • Fig. 2 are the webs 6 'arranged as radially inwardly projecting webs 6' on the turbine wheel 2, wherein according to the Fig. 3 the webs 6 may alternatively or additionally also be provided on the shaft 3 as radially outwardly projecting webs 6. Also in Fig. 3 is denoted by the reference numeral II already caulked and the reference numeral I not yet caulked area.
  • a further alternative embodiment for connecting a turbine wheel 2 with a shaft 3 wherein the shaft 3 in this case has a conically tapered portion 7 with an external thread 8 arranged at the free end of the shaft 3.
  • a conical receiving opening 9 designed to be complementary to the conical region 7 is provided, with an adjoining internal thread 10, whereby an exact radial alignment of the turbine wheel 2 can be achieved by the conical design of the conical region 7 or the conical receiving opening 9
  • the term turbine wheel 2 is of course analogous to the connection of the invention to a compressor wheel.
  • the external thread 8 is located outside of the turbine wheel 2, in which case then a nut is screwed onto the external thread 8, which is covered to improve the aerodynamic properties with a corresponding, not shown cap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Supercharger (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP11157850.6A 2010-03-16 2011-03-11 Rotor d'un turbochargeur Not-in-force EP2366870B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010011486A DE102010011486A1 (de) 2010-03-16 2010-03-16 Rotor für eine Ladeeinrichtung

Publications (3)

Publication Number Publication Date
EP2366870A2 true EP2366870A2 (fr) 2011-09-21
EP2366870A3 EP2366870A3 (fr) 2012-11-14
EP2366870B1 EP2366870B1 (fr) 2015-02-25

Family

ID=43797821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11157850.6A Not-in-force EP2366870B1 (fr) 2010-03-16 2011-03-11 Rotor d'un turbochargeur

Country Status (3)

Country Link
US (1) US20110229325A1 (fr)
EP (1) EP2366870B1 (fr)
DE (1) DE102010011486A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013755A1 (fr) * 2011-07-26 2013-01-31 Ihi Charging Systems International Gmbh Agencement de liaison d'un arbre et d'une roue mobile, et procédé de production d'un tel agencement de liaison
WO2014005906A1 (fr) * 2012-07-03 2014-01-09 Robert Bosch Gmbh Procédé et dispositif d'assemblage d'une roue de turbine et d'une pièce intercalaire
EP4102029A1 (fr) * 2021-06-07 2022-12-14 Atlas Copco Energas Gmbh Procédé de fabrication d'un rotor pour une turbomachine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012211481A1 (de) * 2012-07-03 2014-01-09 Robert Bosch Gmbh Verfahren und Vorrichtung zum Herstellen eines Bauteils
ITCO20130022A1 (it) * 2013-06-10 2014-12-11 Nuovo Pignone Srl Metodo per collegare una girante ad un albero, configurazione di connessione e macchina rotativa.
DE102013226594A1 (de) 2013-12-19 2015-06-25 Robert Bosch Gmbh Verfahren zum Herstellen eines Laufrads und eines Läufers
US10451085B2 (en) * 2016-10-05 2019-10-22 Borgwarner Inc. Assembly methods for the connection of a turbine wheel to a shaft
US10393134B2 (en) * 2017-08-04 2019-08-27 Borgwarner Inc. Polymeric compressor wheel with metal sleeve

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US4557704A (en) 1983-11-08 1985-12-10 Ngk Spark Plug Co., Ltd. Junction structure of turbine shaft
EP1002935A1 (fr) 1998-11-20 2000-05-24 Asea Brown Boveri AG Rotor de turbomachine en TiAl et procédé de fabrication
DE102004025049A1 (de) 2004-05-18 2005-12-15 Forschungszentrum Jülich GmbH Abgasturbolader
WO2006105891A1 (fr) 2005-04-07 2006-10-12 Daimlerchrysler Ag Procede de soudage par friction et composants en acier et aluminide metallique assembles au moyen d'une piece intermediaire en alliage de ni
DE102007028346A1 (de) 2007-06-20 2008-12-24 Robert Bosch Gmbh Aufladeeinrichtung für Brennkraftmaschinen

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NL7903664A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
US4595349A (en) * 1983-06-20 1986-06-17 Eaton Corp. Supercharger rotor, shaft, and gear arrangement
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557704A (en) 1983-11-08 1985-12-10 Ngk Spark Plug Co., Ltd. Junction structure of turbine shaft
EP1002935A1 (fr) 1998-11-20 2000-05-24 Asea Brown Boveri AG Rotor de turbomachine en TiAl et procédé de fabrication
DE102004025049A1 (de) 2004-05-18 2005-12-15 Forschungszentrum Jülich GmbH Abgasturbolader
WO2006105891A1 (fr) 2005-04-07 2006-10-12 Daimlerchrysler Ag Procede de soudage par friction et composants en acier et aluminide metallique assembles au moyen d'une piece intermediaire en alliage de ni
DE102007028346A1 (de) 2007-06-20 2008-12-24 Robert Bosch Gmbh Aufladeeinrichtung für Brennkraftmaschinen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013755A1 (fr) * 2011-07-26 2013-01-31 Ihi Charging Systems International Gmbh Agencement de liaison d'un arbre et d'une roue mobile, et procédé de production d'un tel agencement de liaison
WO2014005906A1 (fr) * 2012-07-03 2014-01-09 Robert Bosch Gmbh Procédé et dispositif d'assemblage d'une roue de turbine et d'une pièce intercalaire
EP4102029A1 (fr) * 2021-06-07 2022-12-14 Atlas Copco Energas Gmbh Procédé de fabrication d'un rotor pour une turbomachine

Also Published As

Publication number Publication date
EP2366870B1 (fr) 2015-02-25
US20110229325A1 (en) 2011-09-22
EP2366870A3 (fr) 2012-11-14
DE102010011486A1 (de) 2011-09-22

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