EP3308023A1 - Elektromotorisch angetriebene flüssigkeitspumpe - Google Patents

Elektromotorisch angetriebene flüssigkeitspumpe

Info

Publication number
EP3308023A1
EP3308023A1 EP16733873.0A EP16733873A EP3308023A1 EP 3308023 A1 EP3308023 A1 EP 3308023A1 EP 16733873 A EP16733873 A EP 16733873A EP 3308023 A1 EP3308023 A1 EP 3308023A1
Authority
EP
European Patent Office
Prior art keywords
bearing
pump
electric motor
spherical
spherical bearing
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Withdrawn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
EP16733873.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Thomas Peterreins
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.)
Buehler Motor GmbH
Original Assignee
Buehler Motor 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 Buehler Motor GmbH filed Critical Buehler Motor GmbH
Publication of EP3308023A1 publication Critical patent/EP3308023A1/de
Withdrawn legal-status Critical Current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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • 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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/54—Hydrostatic or hydrodynamic bearing assemblies specially adapted for rotary positive displacement pumps or compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/601—Shaft flexion

Definitions

  • the invention relates to an electric motor-driven liquid pump, in particular oil pump or reducing agent pump, with an electric motor (1), a positive displacement pump, in particular gear pump (2) and arranged between the electric motor (1) and the positive displacement bearing plate (3).
  • hydrodynamic sliding bearings are used to absorb high radial forces and at the same time to form a cost-optimized storage.
  • Passage for a connecting shaft between the permanent magnet rotor and pump is provided with a sintered plain bearing, which at high speeds as
  • Liquids also suitable for oil and for different speeds.
  • spherical bearing (4) receives a connecting shaft (5) between the electric motor (1) and the gear pump (2), wherein between the inner diameter of the spherical bearing (4) and the connecting shaft (5) an annular liquid-filled bearing gap (6) can remain and the arrangement of spherical bearing (4), connecting shaft (5) and liquid-filled bearing gap (6) acts in operation as a hydrodynamic sliding bearing, high radial forces can be intercepted. Since spherical bearings are used in large numbers in conventional electric motors, which can also be mounted in a simple manner, a very economical production is possible. Also plain bearings with special shapes fall under the scope of the invention.
  • a clamping spring for producing a clamping force between the bearing and bearing plate is also provided in the present invention.
  • the spherical bearing is pressed by the clamping spring to an at least partially conical, facet-shaped or hollow spherical contact surface of the bearing plate.
  • the clamping spring is dimensioned such that an axially acting on the spherical bearing force component is greater than a generated by a liquid pressure axially acting counterforce (Fp) on the spherical bearing. It is important that it does not come to axial movements - not even for a short time, because this would cause unpleasant noise.
  • the clamping force must not be too large, so that a tilting of the spherical bearing as tolerance compensation due to hydrodynamic forces is possible.
  • the bearing should be able to move from the outside at the latest
  • the spherical bearing as usual in many dry applications, should be designed as a sintered sliding bearing and have pore-shaped interspaces which can be filled with liquid, in particular oil. These spaces act as a lubricant depot and can provide sufficient lubrication even in exceptional cases where the fluid level drops.
  • Fig. 2 is a force diagram to Fig. 1 and
  • Fig. 3 is a stylized representation of an inventive
  • Fig. 1 shows a simplified sectional view through a storage area of an electric motor according to the invention for a liquid pump, here for a
  • Oil pump with a bearing plate 3, a connecting shaft 5, a spherical bearing 4 and a clamping spring 7.
  • the clamping spring 7 is arranged in a cylindrical recess 9 of the bearing plate 3 and thereby by a cone-shaped
  • the clamping spring 7 consists of an annular bearing portion 1 1 and a cone-shaped bearing support portion 1 2.
  • the contact area 1 1 of the spherical spring 7 abuts against an annular contact surface at the end of the recess 9.
  • the recess 9 is so on the length of the
  • Calotte bearing 4 tuned that the cone-shaped bearing support portion 1 2 exerts a force FF on the spherical bearing 4 and this in a conical
  • the Kalottenfeder 4 has a plurality of not recognizable here Kalottenfederfingern, which increase the elasticity of the Kalottenfeder 7.
  • FIG. 2 shows a force diagram to FIG. 1, with a spring force FF which is perpendicular to the bearing holding region 1 2 at a contact circle between the two
  • a fluid pressure force / oil pressure force Fp which acts by an occurring during operation fluid pressure / oil pressure in the axial direction on the spherical bearing 4 and a radial force FR, which is largely generated in the pump.
  • Dome length 1 5 mm which produced by the fluid pressure / oil pressure
  • Fig. 3 shows a stylized representation of an oil pump motor according to the invention, with an electric motor 1 and a gear pump 2, which is designed here as a gerotor pump.
  • the electric motor 1 has a wound stator 1 5 and a permanent magnet rotor 1 6 on. Between the stator 1 5 and the permanent magnet rotor 1 6, a gap tube 21 is arranged, which seals the stator 1 5 against an oil-filled rotor chamber 22.
  • Connecting shaft 5 is mounted in the pump remote region of the electric motor 1 in a second motor bearing 25, which is accommodated in a motor housing cover 1 9.
  • the gerotor pump comprises an on the connecting shaft 5 rotatably mounted internal gear 1 7, the outer toothing with a
  • End shield 3 of the electric motor 1 is formed, a second outer wall by a pump housing cover 20.
  • a pump housing cover 20 Next is the spherical bearing 4, the clamping spring 7 and the recess 9 shown.
  • an electronically commutated DC motor z. B. also a brush-commutated DC motor or another type of electric motor can be used.
  • Fig. 4 shows a stylized representation of a variation of the oil pump motor according to the invention, with an electric motor 1 'and a gear pump 2', which is also designed here as a gerotor pump.
  • the electric motor 1 ' has a wound stator 1 5' and a permanent magnet rotor 1 6 '.
  • a split tube 21 ' is arranged, which seals the stator 1 5' with respect to an oil-filled rotor chamber 22 '.
  • An opening 23 ' which here as an annular space between a Connecting shaft 5 'and a bearing plate 3' is shown, connecting the
  • the gerotor pump comprises an on the connecting shaft 5 rotatably mounted internal gear 17 ', the outer toothing with an internal toothing of an external gear 18' is engaged.
  • a pump volume which is defined by the teeth of the gears 17 ', 18' and outer walls of the oil pump, so that a conveying effect arises.
  • An outer wall is formed by a bearing plate 3 'of the electric motor 1', a second outer wall by a pump housing cover 20 '.
  • the spherical bearing 4 ', the clamping spring 7' and the recess 9 ' is shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP16733873.0A 2015-06-15 2016-06-09 Elektromotorisch angetriebene flüssigkeitspumpe Withdrawn EP3308023A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015210908.9A DE102015210908A1 (de) 2015-06-15 2015-06-15 Elektromotorisch angetriebene Flüssigkeitspumpe
PCT/DE2016/200271 WO2016202334A1 (de) 2015-06-15 2016-06-09 Elektromotorisch angetriebene flüssigkeitspumpe

Publications (1)

Publication Number Publication Date
EP3308023A1 true EP3308023A1 (de) 2018-04-18

Family

ID=56296444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16733873.0A Withdrawn EP3308023A1 (de) 2015-06-15 2016-06-09 Elektromotorisch angetriebene flüssigkeitspumpe

Country Status (5)

Country Link
US (1) US10451057B2 (zh)
EP (1) EP3308023A1 (zh)
CN (1) CN107810329B (zh)
DE (1) DE102015210908A1 (zh)
WO (1) WO2016202334A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020131360A1 (de) 2020-11-26 2022-06-02 Fte Automotive Gmbh Fluidpumpe, insbesondere für eine Komponente eines Antriebsstrangs eines Kraftfahrzeugs

Family Cites Families (27)

* Cited by examiner, † Cited by third party
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US3361068A (en) * 1966-08-18 1968-01-02 Allis Chalmers Mfg Co Double hydraulic pump with built-in unloading valve
US4008928A (en) * 1975-03-25 1977-02-22 Martin Abel Lubricating self-aligning bearing
DE3249469A1 (de) * 1982-10-12 1984-07-12 Pierburg Gmbh & Co Kg, 4040 Neuss Foerderaggregat fuer brennstoff bzw. brennstoff-luft-gemisch
US4598220A (en) * 1984-08-15 1986-07-01 Universal Electric Company End play and lubricating system for fractional horsepower electric motors
US4958988A (en) * 1985-09-26 1990-09-25 Ormat Turbines, Ltd. Motor driven pump for pumping viscous solutions
GB2226090A (en) * 1988-11-14 1990-06-20 Johnson Electric Ind Mfg Bearing assembly for electric motor
US5237231A (en) * 1989-10-19 1993-08-17 General Electric Company Structured product dynamoelectric machine
US5447376A (en) * 1993-12-13 1995-09-05 Cunningham, Deceased; Eldon R. Package bearing system
DE59400475D1 (de) * 1994-08-24 1996-09-05 Siemens Ag Anlauf- bzw. Abdeckscheibe für ein Lager auf einer Rotorwelle
DE4430909A1 (de) * 1994-08-31 1996-03-07 Bosch Gmbh Robert Einheit aus Antriebsmotor und Radialkolbenpumpe
DE9422487U1 (de) * 1994-08-31 2004-04-15 Robert Bosch Gmbh Einheit aus Antriebsmotor und Radialkolbenpumpe
US5677584A (en) * 1995-02-09 1997-10-14 General Electric Company Bearing assembly for dynamoelectric machines
DE19806077A1 (de) * 1997-11-27 1999-06-02 Itt Mfg Enterprises Inc Rotorlagerung für ein Motorpumpenaggregat
DE19952201A1 (de) * 1999-10-29 2001-05-31 Buhler Motor Gmbh Elektromotor
JP2002048139A (ja) * 2000-08-01 2002-02-15 Asmo Co Ltd 軸受装置及びその軸受装置を備えたモータ
DE10144653B4 (de) 2001-09-11 2006-05-11 Ate Antriebstechnik Und Entwicklungs Gmbh Permanent erregte elektromechanische Maschine für den Betrieb in Flüssigkeiten und Gasen
JP2003090341A (ja) * 2001-09-17 2003-03-28 Asmo Co Ltd 含油軸受構造
US6884043B2 (en) * 2002-02-28 2005-04-26 Standex International Corp. Fluid circulation path for motor pump
JP4475391B2 (ja) * 2004-02-16 2010-06-09 株式会社ジェイテクト 電動ポンプユニット
DE102005030871A1 (de) * 2005-07-01 2007-01-11 Robert Bosch Gmbh Lagervorrichtung, Verfahren zur Befestigung einer Lagervorrichtung und elektrische Maschine mit einer Lagervorrichtung
CN2870279Y (zh) * 2005-11-05 2007-02-14 中山大洋电机股份有限公司 一种电机的含油轴承结构
CN201063482Y (zh) * 2007-06-22 2008-05-21 肖鸿平 微型电机
DE102008023574A1 (de) * 2008-05-05 2009-11-12 Laing, Oliver Umwälzpumpe
CN201568183U (zh) * 2009-12-23 2010-09-01 宁波洛卡特汽车零部件有限公司 齿轮式电动燃油泵
JP5927870B2 (ja) * 2011-11-30 2016-06-01 アイシン精機株式会社 電動ポンプ
JP5860695B2 (ja) * 2011-12-28 2016-02-16 Ｋｙｂ株式会社 電動オイルポンプ

Also Published As

Publication number Publication date
WO2016202334A1 (de) 2016-12-22
CN107810329A (zh) 2018-03-16
CN107810329B (zh) 2020-09-04
US10451057B2 (en) 2019-10-22
DE102015210908A1 (de) 2016-12-15
US20180100503A1 (en) 2018-04-12

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