EP2253844A1 - Dispositif destiné au transport d'un fluide dans un circuit hydraulique - Google Patents

Dispositif destiné au transport d'un fluide dans un circuit hydraulique Download PDF

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Publication number
EP2253844A1
EP2253844A1 EP09006795A EP09006795A EP2253844A1 EP 2253844 A1 EP2253844 A1 EP 2253844A1 EP 09006795 A EP09006795 A EP 09006795A EP 09006795 A EP09006795 A EP 09006795A EP 2253844 A1 EP2253844 A1 EP 2253844A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic pump
drive motor
clutch
hydraulic
magnetic coupling
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Withdrawn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
EP09006795A
Other languages
German (de)
English (en)
Inventor
Thomas Butzki
Ralf Hartmann
Ulrich Stefan König
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.)
Walter Stauffenberg GmbH and Co KG
Original Assignee
Walter Stauffenberg 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 Walter Stauffenberg GmbH and Co KG filed Critical Walter Stauffenberg GmbH and Co KG
Priority to EP09006795A priority Critical patent/EP2253844A1/fr
Priority to PCT/EP2010/003030 priority patent/WO2010133339A1/fr
Priority to CN2010800329659A priority patent/CN102549263A/zh
Publication of EP2253844A1 publication Critical patent/EP2253844A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • 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
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0069—Magnetic couplings
    • 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
    • F04C15/0096—Heating; Cooling

Definitions

  • the invention relates to a device for conveying a fluid in a hydraulic circuit, comprising a hydraulic pump and a drive motor for driving the hydraulic pump.
  • motor-pump units a hydraulic fluid, in particular hydraulic oil, is conveyed by means of a hydraulic pump driven by a drive motor within a hydraulic circuit.
  • a field of application of such motor-pump units are by-pass filter units for filtering hydraulic fluid.
  • the invention aims to remedy this situation.
  • the invention is based on the object to provide a device for conveying a fluid in a hydraulic circuit, which allows the use of a lower-performance, designed for normal operation of the hydraulic system drive motor for use at low temperatures. According to the invention, this object is solved by the features of the characterizing part of patent claim 1.
  • a device for conveying a fluid in a hydraulic circuit which allows the use of a lower-performance, designed for normal operation of the hydraulic system drive motor for use at low temperatures. If the rated power of the drive motor is lower than the power required for driving the hydraulic pump in cold operation, when the viscosity of the hydraulic fluid is very large, the slip clutch slips, releasing heat energy. This heat energy causes a heating of the hydraulic fluid, whereby the viscosity and thus also the power required to operate the hydraulic pump decreases. With sufficient heating of the hydraulic fluid is a Coupling of the slip clutch, whereby the hydraulic pump is put into operation.
  • each friction clutch is a slip clutch that generates heat loss when slipping, which is useful for heating the hydraulic fluid.
  • the slip clutch is a magnetic clutch in the form of a hysteresis clutch. Due to the slipping of the magnetic coupling, eddy currents occur in the housing parts of the magnetic coupling, which leads to heating of the magnetic coupling. This heating of the magnetic coupling in turn leads to heating of the hydraulic pump, since the magnetic coupling between the drive motor and the hydraulic pump is connected. The hydraulic fluid in the hydraulic pump is in turn heated over time so that its viscosity decreases. Since it is a hysteresis in the magnetic coupling, a torque is transmitted to the hydraulic pump even in the case of slippage of the magnetic coupling, so that the magnetic coupling makes a rigid connection, even without having to stop the magnetic coupling.
  • Hydraulic fluid according to the invention may be any hydraulic medium, such as oil, water or an emulsion, etc.
  • a hydraulic oil with an average viscosity of 320 mm 2 / s can be used,
  • the housing of the slip clutch is attached directly to the housing of the hydraulic pump.
  • the heat transfer between slip clutch and hydraulic pump is improved.
  • the slip clutch can be flanged directly to the hydraulic pump.
  • means for heat transfer are arranged between the coupling and the hydraulic pump.
  • heat conducting elements made of metal, preferably copper, are recommended.
  • the nominal power of the drive motor corresponds approximately to the power required to drive the hydraulic pump in normal operation.
  • a sufficient dimensioning of the drive motor is achieved with minimized production costs.
  • the energy costs for operating the drive motor are reduced.
  • the motor-pump unit chosen as an exemplary embodiment consists essentially of a drive motor 1 which is connected via a magnetic coupling 2 to a hydraulic pump 3 ( FIG. 2 ).
  • the drive motor 1 has a drive shaft 12 which is rotatably mounted about a rotation axis D.
  • the drive shaft 12 is connected to an outer rotor 13 of the magnetic coupling 2.
  • the magnetic coupling 2 has an inner rotor 14, which is arranged within the outer rotor 13 and which is non-rotatably connected to a pump shaft 15 of the hydraulic pump 3.
  • the pump shaft 15 serves to drive the hydraulic pump 3.
  • the outer rotor 13 is fitted on its inner side and the inner rotor 14 on its outer side with permanent magnets of alternating polarity. At rest, the respective north and south poles of the rotors 13, 14 are opposite, wherein the magnetic field is symmetrical.
  • the Magneifefdlinien be deflected, whereby torques on the air gap between the rotors 13, 14 can be transmitted. If the maximum clutch torque is exceeded, the power transmission is interrupted, so that the two rotors 13, 14 slip through, that is, rotate relative to each other. This produces 2 eddy currents in the metal components of the magnetic coupling, which heat the magnetic coupling 2.
  • the magnetic coupling 2 is designed such that the maximum transmittable torque of the magnetic coupling 2 is less than the required torque for driving the hydraulic pump 3 in cold operation and that the maximum transmissible torque of the magnetic coupling 2 is greater than the torque required for driving the hydraulic pump. 3 in normal operation.
  • the magnetic coupling 2 slips in cold operation and transmits the full torque of the drive motor 1 in normal operation. It is understood that in this case the maximum torque of the drive motor is greater than the maximum transmissible torque of the magnetic coupling.
  • the magnetic coupling 2 is flanged directly to the drive motor 1 and the hydraulic pump.
  • the metallic housing 17 of the hydraulic pump 3 which is so directly connected to the magnetic coupling 2, as a heat transfer means, whereby the indexed by the magnetic coupling 2 heat is transmitted directly to the hydraulic pump 3.
  • a clutch bell 16 is provided, which surrounds the magnetic coupling 2.
  • the clutch bell 16 serves as a housing of the magnetic coupling 2 and is heated by the indicated eddy currents. Due to the heat-conducting connection with the housing 17 of the hydraulic pump 3, the heat is delivered to the hydraulic pump 3.
  • the hydraulic pump 3 may be provided in any type, for example as a gear pump, gear pump, screw pump, vane pump or piston pump.
  • the magnetic coupling can also be designed as a magnetic particle clutch. This is a frictionally engaged coupling.
  • a metal powder or metal gel In the gap between the drive pressure plate and the output pressure plate is a metal powder or metal gel.
  • the contained metal particles can be magnetized via an accommodated in a pressure plate electromagnet and so erected. As a result, a non-positive connection is achieved. By changing the applied voltage, a firm connection or slip can be generated.
  • FIG. 1 the use of a device according to the invention in a bypass filter unit is shown by way of example, in which hydraulic fluid in the form of a hydraulic oil is pumped through a filter unit 5.
  • the hydraulic pump 3 the input side with a hydraulic line 7 and the output side with an inlet 8, which is guided to the filter unit 5, is used.
  • a drain 11 of the filter unit 5 is connected to a further hydraulic line 9.
  • the outlet 11 and the inlet 8 are connected to each other via a bypass line 10, wherein in the bypass line 10, a bypass valve 6 is provided in the form of a check valve.
  • the bypass valve 6 opens from the inlet 8 to the outlet 11 at high pressures so as not to damage the filter unit 5 when the pressures are too high or to prevent the drive unit from overloading when the filter unit 5 has been added.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
EP09006795A 2009-05-20 2009-05-20 Dispositif destiné au transport d'un fluide dans un circuit hydraulique Withdrawn EP2253844A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09006795A EP2253844A1 (fr) 2009-05-20 2009-05-20 Dispositif destiné au transport d'un fluide dans un circuit hydraulique
PCT/EP2010/003030 WO2010133339A1 (fr) 2009-05-20 2010-05-19 Dispositif de transport d'un fluide dans un circuit hydraulique
CN2010800329659A CN102549263A (zh) 2009-05-20 2010-05-19 用于输送在一个液压循环回路中的流体的装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09006795A EP2253844A1 (fr) 2009-05-20 2009-05-20 Dispositif destiné au transport d'un fluide dans un circuit hydraulique

Publications (1)

Publication Number Publication Date
EP2253844A1 true EP2253844A1 (fr) 2010-11-24

Family

ID=41203739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09006795A Withdrawn EP2253844A1 (fr) 2009-05-20 2009-05-20 Dispositif destiné au transport d'un fluide dans un circuit hydraulique

Country Status (3)

Country Link
EP (1) EP2253844A1 (fr)
CN (1) CN102549263A (fr)
WO (1) WO2010133339A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109503297A (zh) * 2018-12-10 2019-03-22 北京矿冶科技集团有限公司 乳化炸药泵送装置以及乳化炸药装药系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019130719A1 (de) * 2019-11-14 2021-05-20 Fte Automotive Gmbh Flüssigkeitspumpe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2030455A1 (de) 1970-06-20 1971-12-23 Pierburg Kg A Elektrische Kraftstoffpumpe fur Verbrennungsmotoren
US4111614A (en) * 1977-01-24 1978-09-05 Micropump Corporation Magnetically coupled gear pump construction
WO1998004832A1 (fr) * 1996-07-31 1998-02-05 Horton, Inc. Pompe possedant un embrayage solidaire
WO1998042985A1 (fr) * 1997-03-24 1998-10-01 A/S De Smithske Pompe a engrenages et a couplage magnetique
WO2000029741A1 (fr) * 1998-11-12 2000-05-25 Volvo Lastvagnar Ab Systeme d'alimentation en carburant
EP1122866A2 (fr) * 2000-02-01 2001-08-08 Robert Bosch Gmbh Machine électrique, en particulier alternateur à courant triphasé

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040105768A1 (en) * 2002-11-27 2004-06-03 Cameron Donald B. Internal recirculation for magnetically coupled positive displacement pumps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2030455A1 (de) 1970-06-20 1971-12-23 Pierburg Kg A Elektrische Kraftstoffpumpe fur Verbrennungsmotoren
US4111614A (en) * 1977-01-24 1978-09-05 Micropump Corporation Magnetically coupled gear pump construction
WO1998004832A1 (fr) * 1996-07-31 1998-02-05 Horton, Inc. Pompe possedant un embrayage solidaire
WO1998042985A1 (fr) * 1997-03-24 1998-10-01 A/S De Smithske Pompe a engrenages et a couplage magnetique
WO2000029741A1 (fr) * 1998-11-12 2000-05-25 Volvo Lastvagnar Ab Systeme d'alimentation en carburant
EP1122866A2 (fr) * 2000-02-01 2001-08-08 Robert Bosch Gmbh Machine électrique, en particulier alternateur à courant triphasé

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109503297A (zh) * 2018-12-10 2019-03-22 北京矿冶科技集团有限公司 乳化炸药泵送装置以及乳化炸药装药系统
CN109503297B (zh) * 2018-12-10 2023-10-20 北京矿冶科技集团有限公司 乳化炸药泵送装置以及乳化炸药装药系统

Also Published As

Publication number Publication date
WO2010133339A1 (fr) 2010-11-25
CN102549263A (zh) 2012-07-04

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