EP3164604A1 - Dispositif de fixation et procédé pour fixer une roue à aubes d'un compresseur sur un arbre d'entrée - Google Patents

Dispositif de fixation et procédé pour fixer une roue à aubes d'un compresseur sur un arbre d'entrée

Info

Publication number
EP3164604A1
EP3164604A1 EP15728540.4A EP15728540A EP3164604A1 EP 3164604 A1 EP3164604 A1 EP 3164604A1 EP 15728540 A EP15728540 A EP 15728540A EP 3164604 A1 EP3164604 A1 EP 3164604A1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
impeller
fastening device
nut
recess
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Withdrawn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
EP15728540.4A
Other languages
German (de)
English (en)
Inventor
Stefan Rothgang
Sven Nigrin
Hendrik Ferner
Andreas Burger
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP3164604A1 publication Critical patent/EP3164604A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
    • F02B33/40—Engines with pumps other than of reciprocating-piston type with rotary pumps of non-positive-displacement type
    • 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
    • F02B39/02—Drives of pumps; Varying pump drive gear ratio
    • F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
    • F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
    • 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

Definitions

  • the invention relates to a fastening device for an impeller of a compressor on a drive shaft with a drive shaft having an external thread having axial portion and an impeller which is biased by means of a screwed onto the external thread of the drive shaft mounting nut axially against a stop formed on the drive shaft, and a Method for fixing an impeller of a compressor on a drive shaft by means of such a device.
  • an impeller of a compressor on a drive shaft, in particular on a drive shaft of an electric motor known.
  • the attachment is made by producing a radial interference fit, wherein a press fit between the impeller and the drive shaft is produced by thermal treatment of the two components by the impeller is shrunk onto the drive shaft.
  • the wheels are often attached by an Axialspannverbund on the shaft.
  • the paragraph can be formed either directly behind the impeller or it can be arranged between the impeller and the paragraph other components, such as bearings on the shaft, which are pressed against the stop when tightening the mounting nut, so that a Axialspannverbund arises.
  • the torque generated in the drive shaft when tightening the nut is usually taken at the opposite axial end of the shaft by holding the shaft.
  • Such Axialspannverbund is known for example from US 2014/0090626 AI, in which the impeller is clamped by a nut against a socket whose opposite side bears against a shoulder of the shaft.
  • the following bearing is arranged on a larger shaft diameter.
  • expansion anchor is pushed over the shaft end and then applied to the expansion anchor initially the impeller and then screwed a fastening nut with the interposition of a disc against the impeller.
  • a shoulder of the drive shaft is pushed against a spacer sleeve, which in turn is pushed against a sealing bush, which abuts against the back of the impeller on the opposite side.
  • the expansion anchor is simultaneously pulled into the bore of the impeller, causing it to be clamped on the expansion anchor.
  • a twisting of the expansion anchor when tightening is prevented by the fact that at the free end of the Expansible anchor a square is formed, via which the expansion anchor can be held in its rotational position.
  • the assembly should be possible without additional components on the compressor and can be carried out as simply as possible by ensuring good accessibility of all components to produce the press assembly.
  • the drive shaft can be held by the free side when tightening the mounting nut and so the necessary counter-torque can be introduced at a position immediately adjacent is arranged to the position where the torque arises during tightening.
  • the torsional load is correspondingly limited to a very small portion of the shaft.
  • the assembly is significantly simplified due to the good accessibility of this free shaft end. Other components are also not needed, so that the Axialspannverbund can be produced inexpensively.
  • the contour is formed as an axially extending recess at the axial end of the drive shaft and extending in the drive shaft to the portion of the drive shaft on which the external thread is formed, in particular, the recess extends axially into a portion of the drive shaft, the radial surrounded in the assembled state of the fastening nut.
  • the recess is formed as a polygon, preferably as a hexagon socket.
  • a standard tool can be introduced, which can reliably absorb the moments on the surfaces of the polygon.
  • the stop against which the impeller is braced designed as a shoulder of the drive shaft.
  • the impeller, a mechanical seal and a bearing are arranged on the drive shaft between the heel and the fastening nut.
  • the mechanical seal and fixed bearings designed as a bearing can be fixed in position. Accordingly, there is a simplification of the assembly in the manufacture of such Axialspannverbundes.
  • the method for fixing the impeller is carried out according to the invention by first the impeller is pushed onto the free end of the drive shaft on which the external thread is formed, then the fastening nut is turned onto the external thread of the drive shaft is, still no biasing torque is applied, then a corresponding to the introduced at the axial end in the drive shaft recess contoured key into the axial portion on which the external thread is formed and which is located radially within the fastening nut, and finally the fastening nut is tightened so that the impeller is braced axially on the drive shaft against the stop, wherein the key is held simultaneously in its rotational position.
  • the preload moment is absorbed by the key, which is simply inserted at the free end, without torsion moments occurring in the shaft.
  • a fastening device and a method for fastening an impeller on a drive shaft in which a torsion of the shaft is reliably reduced or completely prevented by a counter-torque are introduced to a biasing torque at the same height of the shaft.
  • the assembly is simplified in comparison to known designs, since the biasing torque and the counter-torque can be introduced in an easily accessible position and no additional components must be mounted. Instead, a complete Axialspannverbund with fixing the bearing and the seal is created with only one assembly step.
  • Fastening device for an impeller of a compressor on a drive shaft is shown in the figures and will be described below as well as a method for fixing the impeller on the drive shaft.
  • FIG. 1 shows a perspective view of a fastening device according to the invention.
  • Figure 2 shows a side view of the fastening device according to the invention of Figure 1 in a sectional view.
  • the fastening device consists of a drive shaft 10, which may be, for example, the drive shaft 10 of an electric motor, which serves as a drive motor of an electric compressor.
  • the drive shaft 10 is mounted in arranged on opposite sides of the rotor 12 of the electric motor bearings in a housing 14, of which a front bearing 16 is disposed in a bearing receptacle 18, as can be seen in Figure 2.
  • This bearing 16 is radially inwardly against a serving as a stop paragraph 20 of the drive shaft 10 at.
  • On the opposite side to the shoulder 20 of the fixed bearing 16 this is against an inner ring 22 of a mechanical seal 24 and in its radially outer region against a formed on the housing 14 stop 26.
  • At this stop 26 is located from the opposite side of an outer ring 28 of the mechanical seal 24th on, which cooperates to produce a seal with the fixedly arranged on the drive shaft 10 inner ring 22 in a known manner.
  • the opposite axial end of the inner ring 22 of the mechanical seal 24 in turn abuts against the back of an impeller 30 of the compressor, which is also arranged on the drive shaft 10.
  • an external thread 34 in the form of a fine thread is formed, onto which a fastening nut 36 is turned on. This can either rest directly against the front of the impeller 30 or with the interposition of an additional ring.
  • the fastening nut also has a fine thread, wherein the pitches of the threads are chosen so that they rise in the opposite direction to the direction of the compressor, whereby a release of the impeller 30 is avoided.
  • a contour in the form of a recess 38 which is formed as a hexagon, which extends axially from the axial end to the axial portion 32 of the drive shaft 10, on which the external thread 34 is formed , so that the fastening nut 36 surrounds the recess 38 radially.
  • the fastening nut 36 is tightened on the external thread 34 against the impeller 30.
  • a key is inserted into the hexagon socket 38, whose end is designed as a hexagon corresponding size.
  • This fastening device and the method described for securing the impeller on the drive shaft serve to secure the impeller against rotation on the drive shaft without tordierende forces acting on the drive shaft, which may have a high ductility, as these directly at the place of their formation by the Keys are included.
  • both the location of the introduction of the torque and the location of the recording of these forces is easily accessible, whereby the assembly of the impeller is significantly simplified. Additional components are just as little needed as a thermal treatment of the drive shaft or the impeller.
  • the recess can be designed as any polygonal.
  • various other components or additional components can be clamped within the Axialspannverbundes.
  • the heel of the drive shaft can be braced directly against the back of the impeller or between the impeller and he mounting nut additional sockets are arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un dispositif de fixation et un procédé pour fixer un roue à aubes d'un compresseur sur un arbre d'entrée. L'invention concerne des dispositifs de fixation conçus pour des roues à aubes (30) de compresseurs sur des arbres d'entrée (10) comprenant un arbre de sortie (10) présentant une section axiale (32) à filetage externe (34) et une roue à aubes (30) qui est précontrainte axialement contre une butée (20) formée sur l'arbre d'entrée (10), au moyen d'un écrou de fixation (36) vissé sur le filetage externe (34) de l'arbre d'entrée (10). Pour empêcher une torsion de l'arbre dans la mesure du possible, un profil (38) est formé sur une extrémité axiale (37) à partir de laquelle la roue à aube (30) est montée par glissement sur l'arbre d'entrée (10). Dans ce profil, il est possible d'insérer une clé correspondante permettant l'application directe des couples, lors du serrage de l'écrou de fixation (36).
EP15728540.4A 2014-07-02 2015-06-12 Dispositif de fixation et procédé pour fixer une roue à aubes d'un compresseur sur un arbre d'entrée Withdrawn EP3164604A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014109256 2014-07-02
DE102015106638.6A DE102015106638A1 (de) 2014-07-02 2015-04-29 Befestigungsvorrichtung sowie Verfahren zur Befestigung eines Laufrades eines Verdichters auf einer Antriebswelle

Publications (1)

Publication Number Publication Date
EP3164604A1 true EP3164604A1 (fr) 2017-05-10

Family

ID=59009114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15728540.4A Withdrawn EP3164604A1 (fr) 2014-07-02 2015-06-12 Dispositif de fixation et procédé pour fixer une roue à aubes d'un compresseur sur un arbre d'entrée

Country Status (3)

Country Link
EP (1) EP3164604A1 (fr)
DE (1) DE102015106638A1 (fr)
WO (1) WO2016000933A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10677257B2 (en) 2016-03-25 2020-06-09 Garrett Transportation I Inc. Turbocharger compressor wheel assembly
US10876547B2 (en) * 2016-09-07 2020-12-29 Garrett Transportation I Inc. Compressor wheel and shaft assembly
CN109555725A (zh) * 2017-09-25 2019-04-02 盖瑞特交通公司 涡轮增压器压缩机叶轮组件
CN112780587B (zh) * 2019-11-08 2024-02-27 青岛海尔智能技术研发有限公司 气体增压器及燃气设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729724A (en) * 1985-09-30 1988-03-08 Kraftwerk Union Aktiengesellschaft Blower for propelling a continuous gas stream with inflatable gas seals
DE102009005386A1 (de) * 2009-01-21 2010-07-22 Bosch Mahle Turbo Systems Gmbh & Co. Kg Ladeeinrichtung für eine Brennkraftmaschine
GB2508921A (en) * 2012-12-17 2014-06-18 Valeo Air Man Uk Ltd Compressing device with thermal protection provided by a labyrinth seal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202644U (fr) * 1985-06-10 1986-12-19
DE3625996A1 (de) 1986-07-31 1988-02-04 Kuehnle Kopp Kausch Ag Laufzeug fuer einen abgasturbolader
US5890881A (en) * 1996-11-27 1999-04-06 Alliedsignal Inc. Pressure balanced turbocharger rotating seal
CN102365440B (zh) * 2009-03-27 2014-02-05 丰田自动车株式会社 涡轮增压器的轴承装置
JP5535992B2 (ja) 2011-07-15 2014-07-02 三菱重工業株式会社 電動過給圧縮機、その組立方法及び内燃機関
DE102011080889B4 (de) * 2011-08-12 2026-05-07 Seg Automotive Germany Gmbh Elektrische Maschine sowie Verfahren zur Montage einer elektrischen Maschine
GB2508647B (en) * 2012-12-07 2017-11-22 Valeo Air Man Uk Ltd Electric supercharger with a seal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729724A (en) * 1985-09-30 1988-03-08 Kraftwerk Union Aktiengesellschaft Blower for propelling a continuous gas stream with inflatable gas seals
DE102009005386A1 (de) * 2009-01-21 2010-07-22 Bosch Mahle Turbo Systems Gmbh & Co. Kg Ladeeinrichtung für eine Brennkraftmaschine
GB2508921A (en) * 2012-12-17 2014-06-18 Valeo Air Man Uk Ltd Compressing device with thermal protection provided by a labyrinth seal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016000933A1 *

Also Published As

Publication number Publication date
WO2016000933A1 (fr) 2016-01-07
DE102015106638A1 (de) 2016-01-07

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