US20080292480A1 - Electric Motor - Google Patents

Electric Motor Download PDF

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Publication number
US20080292480A1
US20080292480A1 US11/781,684 US78168407A US2008292480A1 US 20080292480 A1 US20080292480 A1 US 20080292480A1 US 78168407 A US78168407 A US 78168407A US 2008292480 A1 US2008292480 A1 US 2008292480A1
Authority
US
United States
Prior art keywords
electric motor
rotor
motor according
media
stator
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.)
Abandoned
Application number
US11/781,684
Other languages
English (en)
Inventor
Holger Godeke
Rudolf Loffler
Sandra Maier
Oliver Kampfer
Ralf Heber
Thomas Bischof
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.)
Lindenmaier AG
SYCOTEC GmbH and Co KG
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to LINDENMAIER AG, SYCOTEC GMBH & CO. KG reassignment LINDENMAIER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BISCHOF, THOMAS, GODEKE, HOLGER, HEBER, RALF, LOFFLER, RUDOLF, MAIER, SANDRA, KAMPFER, OLIVER
Priority to US12/601,690 priority Critical patent/US8550793B2/en
Priority to PCT/EP2008/003197 priority patent/WO2008141710A1/de
Priority to ES08749032T priority patent/ES2420968T3/es
Priority to PL08749032T priority patent/PL2158387T3/pl
Priority to EP08749032.2A priority patent/EP2158387B1/de
Priority to CN200880017273XA priority patent/CN101688470B/zh
Publication of US20080292480A1 publication Critical patent/US20080292480A1/en
Abandoned legal-status Critical Current

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    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
    • F02B37/025—Multiple scrolls or multiple gas passages guiding the gas to the pump drive
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
    • F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
    • 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
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/061—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially in flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • 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
    • F04D25/024—Units comprising pumps and their driving means the driving means being assisted by a power recovery turbine
    • 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
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • 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
    • 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
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/107—More than one exhaust manifold or exhaust collector
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/40—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
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • F05B2220/7064—Application in combination with an electrical generator of the alternating current (A.C.) type
    • F05B2220/70642—Application in combination with an electrical generator of the alternating current (A.C.) type of the synchronous type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • F05B2220/7068—Application in combination with an electrical generator equipped with permanent magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/304—Spool rotational speed
    • 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
    • F05D2220/00—Application
    • F05D2220/70—Application in combination with
    • F05D2220/76—Application in combination with an electrical generator
    • 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
    • F05D2220/70—Application in combination with
    • F05D2220/76—Application in combination with an electrical generator
    • F05D2220/764—Application in combination with an electrical generator of the alternating current (A.C.) type
    • F05D2220/7642—Application in combination with an electrical generator of the alternating current (A.C.) type of the synchronous type
    • 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
    • F05D2220/70—Application in combination with
    • F05D2220/76—Application in combination with an electrical generator
    • F05D2220/768—Application in combination with an electrical generator equipped with permanent magnets
    • 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
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/304—Spool rotational speed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to an electric motor.
  • Electric motors are known in various embodiments.
  • motors are known for conducting media, which comprise a rotor and a stator located around this, wherein the rotor is connected to a media impeller and by way of this may regulate the flow of media.
  • the present invention relates to an electric motor which has an extremely simple construction, has a good sealedness with regard to the media to be delivered and despite this has a high performance and is energy efficient.
  • an electric motor for delivering media wherein this comprises a stator, a rotor with a rotor magnet, as well as a media passage opening between the stator and rotor.
  • the smaller inner diameter of the stator is 1.5- to 8-times, preferably 2- to 4-times that of the largest outer diameter of the rotor magnet.
  • media e.g. gases, liquids, pastes, dusts or granular substances.
  • the “largest outer diameter” of the rotor magnet is to be understood as the diameter which the actual magnetically effective material actually has (this without sheathing around the rotor magnet). If the rotor magnet does not have a circularly round shape, then the largest outer diameter is to be understood as the largest possible inscribed circle in the respective cross section of the magnet material
  • the “smallest inner diameter of the stator” is to be understood as the smallest diameter of the electrically or magnetically actually effective stator.
  • a shielding e.g. of a plastic material from the stator towards the rotor, which for example serves for corrosion protection, with this is not to be seen as part of the stator, but only the smallest diameter of the (as a rule metallic) electrically or magnetically effective parts count.
  • the motor according to the invention it is the case of a media gap motor, thus of a permanent magnet synchronous motor with the particular characteristic of an excessively large air gap between the stator and the rotor. This large air gap permits the transport of various media between the rotor and the stator in the axial direction.
  • the rotor magnet here may be directly coupled to a delivery device or also integrated into this.
  • the present media gap motor is basically constructed as a conventional permanent magnet synchronous motor, but with the particularity of a stator inner diameter which is overdimesionally large compared to the outer diameter of the rotor of the permanent magnet.
  • the large gap between the rotor and stator even permits to rotor magnet to be displaced somewhat in the axial direction (direction of the rotation axis) without the characteristic values noticeably worsening by way of this.
  • the rotor of the electric motor preferably has a rotor magnet which is surrounded by a sheathing.
  • the rotor magnet is mechanically protected by way of this. One may also have an influence on the type of magnetic field in this manner.
  • the rotor magnet may be designed such that it is partly or completely integrated into the compressor wheel. If the compressor wheel consists of fibre-reinforced or non-reinforced plastic, then on production, the rotor magnet may be directly peripherally injected with the plastic mass, by which means an inexpensive large-scale manufacture is possible.
  • the electric motor preferably contains a stator which has an essentially hollow-cylindrical shape and which surrounds the rotor in a concentric manner.
  • the stator may be designed as part of the inner wall of the compressor housing.
  • the stator may for example also be applied as an insert into a corresponding opening of the compressor housing.
  • the stator may yet also be provided with a shielding towards the rotor.
  • This serves for the protection of the stator, in particular for corrosion protection.
  • the shielding may preferably be given in the form of a thin tube or flexible tubing, wherein this shielding is preferably designed of electrically and magnetically not-conductive material.
  • the hollow-cylindrical design of the stator is advantageous but not absolutely necessary.
  • the rotor may be designed in different manners.
  • the motor preferably has a rotor shaft, wherein this rotor shaft is mounted in a simple or in a multiple manner over its length.
  • the rotor shaft is essentially mounted on one side and projects out essentially freely on the other side.
  • struts between the rotor and stator which could further increase the throughput resistance, may be done away with.
  • a further embodiment envisages the rotor magnet in the inside being hollow in regions, for placing on a common shaft connected to a medium impeller or a medium conveyor worm.
  • a further advantages formation envisages the mounting of the rotor shaft being non-lubricated or being lubricated by the medium to be delivered itself (this is advantageous for example with hydrodynamic bearings).
  • any media may be considered for the delivery with the electric motor according to the invention, specifically all gases (in particular air) as well as liquid media (in particular aqueous media).
  • One particular advantage of the medium gap motor according to the invention lies in the fact that the axial centre of the stator and the axial centre of the rotor may be displaced in the axial direction, and specifically by tenth up to a fifth of the largest axial extension of the rotor magnet.
  • the electric motor according to the invention is particularly suitable for the use in an electrically supported turbocharger with a freely projecting electric motor, for the transport of explosive gases, dusts, vapours, sticking substances, pastes, liquids such as water or oil; decomposing products, such as foodstuffs; in ventilation devices, in pumps, in particular in pumps for aggressive media, such as salt water, chemical solutions (in particular in the orthodontic field); in disinfectable or sterilisable pumps, canned pumps (medium transport in the axial direction), metering pumps, micro-pumps, disposable pumps, multi-stage pump systems; for use in turbines, generators, delivery worms for example for granular media, fluids or pastes; in gas-, water- and steam turbines; in devices for measuring the media flow via a generator voltage.
  • FIGS. 1 a to 1 d show views of a turbocharger, with which the electric motor according to an exemplary embodiment of the present invention is applied,
  • FIGS. 2 a and 2 b show cross-sectional views of an electric motor according to the present invention
  • FIGS. 3 to 6 show views or sections of further exemplary embodiments of the electric motor according to the present invention.
  • FIGS. 1 a to 1 d One application example of the invention is firstly shown by way of the FIGS. 1 a to 1 d.
  • FIGS. 1 a to 1 d show a turbocharger 1 which may be coupled to a turbine housing 5 on an internal combustion engine. After the combustion, the exhaust gas is collected by way of the exhaust gas fans shown in FIG. 1 a and is used for driving a turbine wheel 2 .
  • the turbine wheel 2 is surrounded by the turbine housing 5 and is essentially deduced from a conventional mechanical turbocharger.
  • a bearing housing 7 connects to the turbine housing 5 , and then a compressor housing 6 .
  • a compressor wheel 6 is attached in this compressor housing 6 , and compresses the air fed through an inlet opening (this inlet opening is in particular easily seen in FIG. 1 c ) and leads it to the combustion space of the internal combustion engine in a manner which is not shown here.
  • the compressor wheel 3 on the left side in FIG. 1 a shows a continuation, to which a rotor 4 a of an electric motor is given.
  • the rotor 4 a is attached centrally in the inlet air opening 4 e.
  • a stator 4 b which has an essentially hollow-cylindrical shape and is represented as part of the inner wall of the compressor housing in the region of the inlet air opening, is provided around the rotor 4 a .
  • the stator 4 b is even provided as an insert into a suitable opening, so that this may be assembled very easily.
  • the rotor gap between the rotor 4 a and the stator 4 b is the inlet air opening 4 e for the compressor wheel.
  • the inlet air opening 4 e is free of struts between the rotor and the stator also according to FIG. 1 a .
  • the smallest inner diameter of the stator (see “d s ” in FIG. 1 d ) is 1.5 times larger than the largest outer diameter d R of the rotor.
  • the rotor 4 a of the electric motor 4 comprises a rotor magnet 4 c which here is surrounded by an sheathing (see e.g. FIG. 1 d ).
  • the sheathing is designed in an essentially “beaker-shaped” manner, wherein the base of the beaker is almost completely closed towards the compressor wheel (disregarding a centric assembly bore).
  • the compressor wheel may (but need not) be of a non-metallic material, here with one embodiment, for example of a non-reinforced plastic, and the influence on the electromagnetic field of the electric motor is minimised.
  • the rotor magnet 4 c in turn is hollow in regions for placing on a common shaft with the compressor wheel.
  • a bore 4 c of the rotor magnet is to be accordingly seen in FIG. 1 d .
  • a sequence of elements is shown in the sequence of the rotor (consisting of the rotor magnet 4 c and sheathing 4 d ), the compressor wheel 3 , shaft 8 , turbine wheel 2 , which minimises a thermal loading of the electric motor.
  • the shaft 8 here in the present embodiment is designed such that the turbine wheel 2 , compressor wheel 3 as well as rotor 4 a are firmly (rotationally fixedly) connected to one another, thus may not be separated by a rotation clutch or free-wheel.
  • the nominal voltage of the electric motor 4 in FIG. 1 a here is 12 V, but other voltages (for example 48V for hybrid vehicles) are also possible.
  • the electric motor may be operated in motor operation (for accelerating and avoiding a “turbolag”), as well as in generator operation (for recovering energy). If the charging pressure (in the turbine housing) reaches a certain nominal value, then additional energy is produced by way of using a converter capable of return feed. Ideally, one may do away with a wastegate/pressure dose for blowing out excess exhaust gas pressure, as is represented in FIG. 1 b , numeral 9 , by way of this energetic conversion of the braking energy in generator operation.
  • the turbocharger according to the invention is used in a drive system according to the invention for motor vehicles which contain an internal combustion engine connected to the turbocharger, as well as a storage device for electrical energy.
  • the electric motor of the turbocharger 1 here is connected to the storage device for electric energy for taking electrical energy in a motor operation of the turbocharger 1 , and for feeding in electrical energy in a generator operation of the turbocharger.
  • the electric motor of the turbocharger is connected to an electrical storage device, wherein this electrical storage device is additionally connectable to an electromotoric drive of a motor vehicle.
  • This may be a “hub motor” of a motor vehicle or another electric motor, which is provided in the drive train of a motor vehicle (for example in the region of the gear).
  • This connection of the electrical turbocharger to a hybrid vehicle is particularly energy efficient.
  • Control electronics for determining the rotational speed of the turbine wheel 2 or the compressor wheel 3 , actual values of pressure conditions on the turbine housing side and compressor housing side, as well as further values relevant to the torque for the internal combustion engine are provided for the efficient control of the drive system or the turbocharger.
  • FIG. 2 a shows a field line representation of the magnetic flux between the rotor 4 a and the stator 4 b.
  • FIG. 2 b once again shows the geometric particulars of the electric motor according to the invention.
  • a solid-cylindrical rotor magnet which has a largest diameter d RM .
  • a sheathing 4 d is attached around this rotor magnet 4 c .
  • a medium impeller 10 a is attached on this sheathing.
  • a medium passage opening 4 e is given around the media impeller 10 a and this is surrounded radially outwardly by a shielding 11 .
  • the actual stator 4 b whose outer diameter is specified at d s is then given around the shielding 11 .
  • the remanence is 1.28 Teslas
  • the energy density 315 kJ/m 3 and the rotor magnet consists of NdFeB.
  • an electric motor 4 for the delivery of media wherein this comprises a stator 4 b , a rotor 4 a with a rotor magnet 4 c , as well as a media passage opening 4 e between the stator and rotor.
  • the rotor magnet is preferably surrounded with a sheathing for the protection from media or damage. This may be designed in a beaker-like manner.
  • the stator is preferably designed as an insert into a corresponding opening of a surrounding housing.
  • a shielding 11 is preferably provided to the inside, thus towards the media passage opening, and this protects the stator from corrosion and improves the flux characteristics.
  • the rotor particularly preferably has a rotor shaft, wherein this rotor shaft is mounted in a simple or multiple manner over its length.
  • the rotor shaft here is preferably mounted on one side and thus in a “projecting” manner.
  • the flow resistance through the rotor is further reduced by way of this.
  • the rotor magnet is preferably placed on a common shaft with a media impeller or a media conveyor worm or is integrated in the inside and thus centered straight away.
  • FIG. 3 shows a use of an electric motor which comprises a media impeller 10 a of a plastic material.
  • a rotor magnet 4 c is attached on the end-side of this media impeller 10 a .
  • Bearing locations 12 mount a rotor shaft 8 which is screwed in the medium impeller.
  • a stator 4 b is accommodated in an inner wall of a housing 6 .
  • the flow of a medium 13 is introduced from the left, and is conveyed towards the right by the media impeller 10 a .
  • there is a large gap width not only radially about the axis 14 , but also axially in the direction of the axis 14 .
  • FIG. 4 shows a representation corresponding essentially to FIG. 3 , wherein here a shielding 11 is additionally provided, which protects the stator from the medium 13 .
  • FIG. 5 shows a further embodiment of a pump according to the invention or of a throughput meter according to the invention, with which three propellers 10 a are mounted on a rotor shaft 8 .
  • the bearings are attached on the left, as well as on the right side of the three media impellers 10 a .
  • the stator 4 b is attached in the axial direction with respect to the axis 14 centered about the rotor magnet 4 c .
  • the media impellers have an inner cavity which accommodates the rotor shaft 8 or the rotor magnets 4 c located therein.
  • a particularly simple and securely mounted device is given in this manner, and by way of suitable webs, on the one hand the retention of the rotor shaft 8 is ensured, and also an adequate throughput of media 13 is achieved on account of the relatively small web cross sections.
  • FIG. 6 shows an embodiment example which is quite similar to FIG. 5 .
  • a media conveyor worm 10 b is provided instead of the three individual impellers 10 , and this seals media towards the shielding 11 in a particularly good manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Supercharger (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
US11/781,684 2007-05-24 2007-07-23 Electric Motor Abandoned US20080292480A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US12/601,690 US8550793B2 (en) 2007-05-24 2008-04-15 Fastening of rotor magnets on the shaft of a compressor arrangement
PCT/EP2008/003197 WO2008141710A1 (de) 2007-05-24 2008-04-15 Elektromotor
ES08749032T ES2420968T3 (es) 2007-05-24 2008-04-15 Disposición de compresor
PL08749032T PL2158387T3 (pl) 2007-05-24 2008-04-15 Układ sprężarki
EP08749032.2A EP2158387B1 (de) 2007-05-24 2008-04-15 Verdichteranordnung
CN200880017273XA CN101688470B (zh) 2007-05-24 2008-04-15 电动机

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP07090100.4 2007-05-24
EP07090100A EP1995429B1 (de) 2007-05-24 2007-05-24 Turbolader
EP07075496A EP1995426B1 (de) 2007-05-24 2007-06-20 Elektromotor
EP07075496.5 2007-06-20

Publications (1)

Publication Number Publication Date
US20080292480A1 true US20080292480A1 (en) 2008-11-27

Family

ID=38421585

Family Applications (4)

Application Number Title Priority Date Filing Date
US11/781,644 Active 2028-10-19 US8371121B2 (en) 2007-05-24 2007-07-23 TurboCharger with an electric motor
US11/781,684 Abandoned US20080292480A1 (en) 2007-05-24 2007-07-23 Electric Motor
US11/915,350 Abandoned US20110076166A1 (en) 2007-05-24 2007-10-25 Turbo Charger II
US11/915,353 Abandoned US20110076167A1 (en) 2007-05-24 2007-10-25 Electric Motor II

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US11/781,644 Active 2028-10-19 US8371121B2 (en) 2007-05-24 2007-07-23 TurboCharger with an electric motor

Family Applications After (2)

Application Number Title Priority Date Filing Date
US11/915,350 Abandoned US20110076166A1 (en) 2007-05-24 2007-10-25 Turbo Charger II
US11/915,353 Abandoned US20110076167A1 (en) 2007-05-24 2007-10-25 Electric Motor II

Country Status (7)

Country Link
US (4) US8371121B2 (ko)
EP (6) EP1995429B1 (ko)
CN (2) CN101715509B (ko)
AT (3) ATE498061T1 (ko)
DE (1) DE502007006457D1 (ko)
ES (1) ES2420968T3 (ko)
WO (2) WO2008141670A1 (ko)

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US20110076167A1 (en) 2011-03-31
EP1995428A1 (de) 2008-11-26
CN101688470A (zh) 2010-03-31
EP2158386A1 (de) 2010-03-03
EP1995427A1 (de) 2008-11-26
WO2008141670A1 (de) 2008-11-27
US20080289333A1 (en) 2008-11-27
ATE525559T1 (de) 2011-10-15
CN101688470B (zh) 2012-05-23
CN101715509A (zh) 2010-05-26
EP1995429B1 (de) 2011-02-09
EP2158385A1 (de) 2010-03-03
CN101715509B (zh) 2011-12-07
EP1995429A1 (de) 2008-11-26
EP2158386B1 (de) 2017-07-12
US20110076166A1 (en) 2011-03-31
US8371121B2 (en) 2013-02-12
EP1995428B1 (de) 2011-02-09
EP1995426B1 (de) 2011-09-21
WO2008141669A1 (de) 2008-11-27
EP1995426A1 (de) 2008-11-26
ES2420968T3 (es) 2013-08-28
EP1995427B1 (de) 2013-12-25
ATE498061T1 (de) 2011-02-15
DE502007006457D1 (de) 2011-03-24
ATE498060T1 (de) 2011-02-15

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