WO2016078945A1 - Compresseur de gaz à entraînement électrique - Google Patents

Compresseur de gaz à entraînement électrique Download PDF

Info

Publication number
WO2016078945A1
WO2016078945A1 PCT/EP2015/076012 EP2015076012W WO2016078945A1 WO 2016078945 A1 WO2016078945 A1 WO 2016078945A1 EP 2015076012 W EP2015076012 W EP 2015076012W WO 2016078945 A1 WO2016078945 A1 WO 2016078945A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive shaft
compressor
rotor housing
gas compressor
housing
Prior art date
Application number
PCT/EP2015/076012
Other languages
German (de)
English (en)
Inventor
Hartmut Rosendahl
Axel-Oliver Koehler
Sergej KUJAT
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Publication of WO2016078945A1 publication Critical patent/WO2016078945A1/fr

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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • 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
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a gas compressor, in particular for an exhaust gas turbocharger of an internal combustion engine of a vehicle according to the preamble of claim 1.
  • the invention is not limited to use in the exhaust gas turbocharger, but rather applicable to any electrically operated gas compressor, such as in the air supply of a fuel cell.
  • the exhaust gas turbocharger of an internal combustion engine has, in current practice, a compressor whose compressor wheel via a shaft with an exhaust gas turbine in the exhaust gas of the
  • the exhaust gas turbine has a turbine wheel which is offset from the exhaust gas flow and which is connected in a rotationally fixed manner to a drive shaft of the compressor wheel which is arranged in the intake tract of the internal combustion engine.
  • a generic gas compressor has an electric motor whose rotor is drivingly coupled via a drive shaft with a compressor wheel of the gas compressor.
  • Compressor is in a compressor room, which connects a pressure port and a suction nozzle fluidly.
  • the compressor wheel is mounted via a threaded connection to the drive shaft.
  • the compressor wheel and the shaft may be made of different materials, whereby the compressor wheel is to be placed on the drive shaft with the interposition of an additional metallic bushing to make a perfect connection.
  • Compressor reaches the nominal point almost without delay. This is a small one
  • Mass moment of inertia of the rotating compressor components advantageous.
  • the compressor is subject to operationally high heat load, which may be the risk of excessively large heat transfer from the compressor to the pivot bearing or electric drive.
  • the compressor and the leading to the electric drive drive shaft constructed in two parts, resulting in a production-technically complex and costly connection between the compressor and the drive shaft.
  • the object of the invention is a simply constructed gas compressor
  • the invention is based on the problem that in the prior art, the compressor and the drive shaft of the electric drive are constructed in two parts, which is disadvantageous in terms of ease of manufacture and in terms of a space requirement. Against this background forms according to the characterizing part of claim 1 the
  • Compressor and the drive shaft a unit of material and one-piece unit.
  • the manufacturing cost of the gas compressor can be considerably reduced.
  • mechanical problems at the connection points can be omitted, for example failures due to unintentional release of the connection.
  • the mass moment of inertia of the rotating compressor components can be reduced with the uniform material and one-piece connection.
  • the high-temperature resistant plastic can also be reduced, the heat transfer and thus the heat load of the pivot bearing and the electric drive. Due to the reduced mass moment of inertia, the electric drive, for example an electric motor, can also be made smaller. In addition, less energy is required to accelerate the compressor wheel. If the gas compressor in a motor vehicle with
  • the spaced from the compressor shaft end of the drive unit is rotatably coupled to the rotor of the electric motor.
  • the compressor wheel opposite shaft end of the drive shaft can pass into a hollow cylindrical rotor housing, in the interior of which the rotor is arranged.
  • the rotor housing may be attached as a separate attachment to the shaft end of the drive shaft.
  • the drive shaft may have a hub portion which is supported via a pivot bearing on a radially outer bearing flange of a compressor housing.
  • the rotary bearing may have rolling elements in a conventional manner.
  • the inner races of the rolling elements of the rotary bearing may possibly be formed directly in the hub portion or alternatively in a separate inner ring which is placed on the hub portion of the drive shaft.
  • the rotor housing When assembling existing from the compressor and the drive shaft assembly can be used in a first mounting direction from the outside with still dismantled rotor housing with the hub portion in the housing side bearing flange, with the interposition of the above-mentioned pivot bearing. Subsequently, the rotor housing in a, the first mounting direction axially opposite second mounting direction can be attached to the shaft end of the drive shaft. In such an assembly process, therefore, the rotor housing is not introduced by the housing-side bearing flange limited by the stator interior. Rather, the rotor housing is to be mounted on the, the bearing flange axially opposite compressor side. Accordingly, the geometry of the rotor housing is independent of the passage cross section of the housing side
  • the outer diameter of the rotor housing can be dimensioned larger than the outer diameter of the drive shaft.
  • the rotor housing In order to enable such an assembly process, the rotor housing must be made smaller diameter compared to the drive shaft, that is, the rotor housing goes on an annular shoulder in the larger diameter drive shaft, so that the total rotationally symmetrical unit is designed in approximately cone-like and the diameter of the assembly against the mounting direction increases stepwise.
  • the drive shaft can be designed as a hollow shaft whose cavity is closed on one side at the transition to the compressor wheel and on the axially opposite side in the interior of the
  • the rotationally symmetric assembly may have a blind bore at the shaft end opposite the compressor wheel with a smaller diameter portion in the area of the drive shaft (i.e., the shaft cavity) and a larger diameter bore portion forming the interior of the rotor housing.
  • Bore sections forms an axial stop, with which the rotor is in abutment.
  • FIG. 1 is a simplified block diagram of an internal combustion engine of a vehicle with an exhaust gas turbocharger and an electric compressor.
  • Fig. 3 is a unit consisting of the compressor wheel, the drive shaft and the rotor housing unit;
  • Fig. 4 in an exploded view of one of the compressor and the drive shaft
  • FIG. 1 shows a roughly simplified block diagram with an internal combustion engine 1 with an associated exhaust gas turbocharger 8.
  • the block diagram in only insofar as it is necessary for understanding the invention.
  • the internal combustion engine 1 has an intake tract 2 for the intake of fresh air into the cylinders 3 of the internal combustion engine and an exhaust tract 4 for the removal of the combustion exhaust gases from the cylinders 3.
  • an exhaust manifold, not shown, and an exhaust pipe 6 is arranged, between which a through-flow exhaust gas turbine 7 of the exhaust gas turbocharger 8 is connected.
  • the turbine 7 is connected via a shaft 9 in driving connection with a compressor 10, which in the intake tract second
  • High-pressure line 13 in which a charge air cooler, not shown, is arranged in the cylinder 3 of the internal combustion engine 1 passes.
  • a gas compressor 15 is connected with speed-controlled electric motor 16, which is powered by a vehicle battery 17 with electrical energy.
  • the electric motor 16 of the gas compressor 15 is controlled by an electronic control unit, not shown speed controlled.
  • Compressor housing 19 with an axially aligned suction nozzle 21 and a radially outer tangentially adjoining discharge port 23, which open into a compressor chamber 25 in which a compressor 27 is rotatably mounted.
  • a drive shaft 29 Connected to the compressor wheel 27 is a drive shaft 29 leading to the electric motor 16, which merges into a hollow-cylindrical rotor housing 31.
  • the compressor wheel 27, the drive shaft 29 and the rotor housing 31 are summarized in FIGS. 1 and 2 in a unitary and integral unit 33. According to FIG. 2, the drive shaft 29 directly on the compressor wheel 27 a
  • Hub portion 35 which is supported with the interposition of a pivot bearing 37 against a radially outer bearing flange 39.
  • the bearing flange 39 is part of a
  • a stator 43 of the electric motor 16 is arranged rotationally fixed, the stator windings 45 define a hollow cylindrical stator interior, in which the rotor housing 31 of the assembly 33 is rotatably arranged.
  • Stator windings 45 cooperates.
  • the electric motor 16 is indicated above
  • Motor phase lines 49 in conjunction with an electronic control unit to make a speed-controlled control of the gas compressor 15.
  • the rotary bearing 37 has, in FIG. 1, two roller bearings spaced apart from one another in the axial direction by means of intermediate rings, the inner and outer rings of which are respectively supported on the shaft hub section 35 and on the radially outer bearing flange 39.
  • Fig. 3 consisting of the compressor 27, the drive shaft 29 and the rotor housing 31 assembly 33 is shown in isolation.
  • the assembly 33 is made of a high strength and high temperature resistant plastic, preferably Torion, in a plastic injection molding process.
  • the outer diameter d R of the rotor housing 31 is smaller compared to the outer diameter d A of the drive shaft 29, so that the rotor housing 31 at an outer annular shoulder 51 in the larger diameter
  • Drive shaft 29 passes.
  • the assembly 33 is inserted from the outside in a first mounting direction I in the drive housing 41, in such a way that first the rotor housing 31 is inserted with play clearance through the housing side bearing flange 39 into the stator 43 and the hub portion 35 with the interposition of the Swivel 37 is inserted into the housing-side bearing flange 39.
  • the interior of the rotor housing 31 is axially provided in the direction of the compressor 27 with a blind hole 53, that is, the drive shaft is designed as a hollow shaft approximately up to the level of running from solid material compressor wheel 27.
  • the unitary material and one-piece assembly 33 is shown in a further embodiment.
  • the assembly 33 consists of the compressor wheel 27 and the drive shaft 29, while the rotor housing 31 is designed as a separate attachment, for example, with the free end of the shaft 55th
  • the outer diameter d R of the rotor housing 31 is dimensioned larger than the outer diameter d A of the drive shaft 29.
  • the assembly consisting of the compressor 27 and the drive shaft 29 33 in the first mounting direction I from the outside - at still dismantled
  • Hub portion 35 with the interposition of the rotary bearing 37 in the housing-side bearing flange 39 is seated. Subsequently, the rotor housing 31 is connected in a, the first mounting direction I opposite second mounting direction II at the free shaft end 55 of the drive shaft 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Supercharger (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un compresseur de gaz, notamment pour un turbocompresseur de gaz d'échappement, comprenant un mécanisme d'entraînement électrique (16), notamment pour un moteur à combustion interne (1) d'un véhicule, lequel possède un stator (43) et un rotor (47) qui est en accouplement moteur par le biais d'un arbre d'entraînement (29) avec une roue de compresseur (27), laquelle est disposée dans un espace de compresseur (25) reliant fluidiquement un raccord de refoulement (23) et un raccord d'aspiration (21). Selon l'invention, au moins la roue de compresseur (25) et l'arbre d'entraînement (29) forment une unité de fabrication (33) monobloc et homogène par son matériau.
PCT/EP2015/076012 2014-11-17 2015-11-09 Compresseur de gaz à entraînement électrique WO2016078945A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014223417.4 2014-11-17
DE102014223417.4A DE102014223417A1 (de) 2014-11-17 2014-11-17 Gasverdichter, insbesondere für einen Abgasturbolader

Publications (1)

Publication Number Publication Date
WO2016078945A1 true WO2016078945A1 (fr) 2016-05-26

Family

ID=54545107

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/076012 WO2016078945A1 (fr) 2014-11-17 2015-11-09 Compresseur de gaz à entraînement électrique

Country Status (2)

Country Link
DE (1) DE102014223417A1 (fr)
WO (1) WO2016078945A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3626940A1 (fr) * 2018-09-20 2020-03-25 Robert Bosch GmbH Machine d'entraînement électrique pour un compresseur et / ou une turbine, turbocompresseur et / ou turbine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1995426A1 (fr) * 2007-05-24 2008-11-26 SycoTec GmbH & Co. KG Moteur électrique
US20090026061A1 (en) * 2007-07-24 2009-01-29 Mechanical Equipment Company, Inc. Vapor compression distillation system including an integrated motor/compressor unit
US20090220362A1 (en) * 2006-02-03 2009-09-03 Rainer Gausmann Compressor Unit
DE102012222205A1 (de) * 2012-12-04 2014-06-05 Robert Bosch Gmbh Turbomaschine, Abgasturbolader

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61291702A (ja) * 1985-06-18 1986-12-22 Toyota Central Res & Dev Lab Inc 熱機関用回転体およびその製造方法
DE19934382A1 (de) * 1999-07-22 2001-02-01 Bosch Gmbh Robert Flüssigkeitspumpe
DE102009004881A1 (de) 2009-01-16 2010-07-29 Bosch Mahle Turbo Systems Gmbh & Co. Kg Ladeeinrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090220362A1 (en) * 2006-02-03 2009-09-03 Rainer Gausmann Compressor Unit
EP1995426A1 (fr) * 2007-05-24 2008-11-26 SycoTec GmbH & Co. KG Moteur électrique
US20090026061A1 (en) * 2007-07-24 2009-01-29 Mechanical Equipment Company, Inc. Vapor compression distillation system including an integrated motor/compressor unit
DE102012222205A1 (de) * 2012-12-04 2014-06-05 Robert Bosch Gmbh Turbomaschine, Abgasturbolader

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3626940A1 (fr) * 2018-09-20 2020-03-25 Robert Bosch GmbH Machine d'entraînement électrique pour un compresseur et / ou une turbine, turbocompresseur et / ou turbine
CN110925081A (zh) * 2018-09-20 2020-03-27 罗伯特·博世有限公司 用于压缩机和/或涡轮机的电驱动机及压缩机和/或涡轮机
CN110925081B (zh) * 2018-09-20 2023-08-22 罗伯特·博世有限公司 压缩机和用于压缩机的电驱动机

Also Published As

Publication number Publication date
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