EP2796722A1 - Pompe à liquide de refroidissement électrique d'automobile avec carter serti - Google Patents

Pompe à liquide de refroidissement électrique d'automobile avec carter serti Download PDF

Info

Publication number
EP2796722A1
EP2796722A1 EP20130165573 EP13165573A EP2796722A1 EP 2796722 A1 EP2796722 A1 EP 2796722A1 EP 20130165573 EP20130165573 EP 20130165573 EP 13165573 A EP13165573 A EP 13165573A EP 2796722 A1 EP2796722 A1 EP 2796722A1
Authority
EP
European Patent Office
Prior art keywords
pump
bordering
section housing
motor
housing
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.)
Granted
Application number
EP20130165573
Other languages
German (de)
English (en)
Other versions
EP2796722B1 (fr
Inventor
Wolfgang Zacher
Pietro Travaglini
Antonio Basilischi
Carmine Candeloro
Rene Patzner
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 Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Priority to EP13165573.0A priority Critical patent/EP2796722B1/fr
Publication of EP2796722A1 publication Critical patent/EP2796722A1/fr
Application granted granted Critical
Publication of EP2796722B1 publication Critical patent/EP2796722B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid 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
    • 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
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking

Definitions

  • the invention refers to an automotive electrical coolant pump for pumping a coolant in a coolant circuit of a car, for example for cooling the cars combustion engine.
  • the coolant pump is provided with a pump section comprising a pump wheel and with a motor section comprising a motor rotor and a motor stator.
  • the producers of automotive coolant pumps generally provide cooling pumps for many different car manufacturers or engine manufacturers.
  • the standard coolant pump type is the impeller pump which is provided with an axial coolant inlet and a tangential coolant outlet.
  • the size of the coolant pump and the rotational angle of the tangential coolant outlet with respect to the fixation means of the coolant pump can vary from customer to customer.
  • the producer of automotive coolant pumps must provide different variations of one coolant pump model with different rotational angles of the tangential coolant outlet.
  • the coolant pump comprises a pump section with a pump wheel and a motor section with a motor rotor and a motor stator.
  • the pump housing comprises at least two separate section housings, i.e. the pump section housing and a separate motor section housing which is directly fixed to the pump section housing.
  • the pump section housing comprises a central axial coolant inlet and a tangential coolant outlet.
  • the tangential coolant outlet needn't be strictly tangential but continues the outlet volute which is typical for an impeller liquid pump.
  • the fixation of the pump section housing at the motor section housing is provided by a bordering arrangement.
  • the bordering arrangement is defined by a circular fixation bulge at the axial end of one section housing and a corresponding circular bordering ring at the axial end of the other section housing.
  • the bordering ring embraces and engages behind the fixation bulge so that the bordering ring and the fixation bulge define a strong axial fixation of the pump section housing at the motor section housing.
  • the bordering arrangement generally allows to freely choose the rotational position of the pump section housing with respect to the motor section housing.
  • the fixation bulge is provided with at least one chamfer depression and the bordering ring is provided with a corresponding bordering tongue which is projecting into the chamfer depression at the fixation bulge.
  • This chamfer/tongue arrangement defines a strong rotational fixation of the pump section housing at the motor section housing.
  • the bordering arrangement is relatively simple and can be provided before assembling with relatively large mechanical tolerances because the bordering arrangement is assembled and fixed to each other by a cold forming process step.
  • the pump section housing has only to be preassembled, before bordering, to the motor section housing in the desired rotational angle.
  • the motor section housing can always be placed in the same rotational position in the bordering tool, no matter in which rotational angle the pump section housing is finally assembled.
  • a first positioning tool presses the part of the bordering tongue which is corresponding to and axially in-line with the chamfer depression into the chamfer depression. After this positioning step, the rotational position of the pump section housing with respect to the motor section housing is fixed and can not be changed anymore.
  • the bordering ring is bended around the fixation bulge over the entire circumference so that, in cross section, the bordering ring axially engages behind the fixation bulge.
  • these two fixation steps can also be provided in one single mechanical fixation step.
  • a strong axial and rotational fixation of the pump section housing at the motor section housing can be provided, whereby production and preparation of the bordering elements as well as of the bordering tools are simple and cost-effective. Also the final fixation step is simple, reliable and can be provided with the same machines and tools for different tangential fixation angles of the pump section housing with respect to the motor section housing and its mounting flanges.
  • a separate sealing arrangement is provided to provide a liquid tight sealing of the gap between the two section housings.
  • the sealing arrangement is axially not overlapping with the bordering arrangement.
  • the sealing arrangement and the bordering arrangement have no radial plane in common.
  • the axial separation of the sealing arrangement from the bordering arrangement avoids negative mechanical impacts on the sealing arrangement caused by the bordering process. Therefore, the liquid-tight sealing of the joint between the motor section housing and the pump section housing can be guaranteed even after the bordering process.
  • the proximal end of the pump section housing is provided with the fixation bulge and the distal end of the motor section housing is provided with the bordering ring.
  • two or more chamfer depressions are provided at the fixation bulge.
  • Two or more chamfer depressions in connection with the corresponding bordering tongues provide an increased rotational fixation.
  • the chamfer depression is provided at the axial end of the fixation bulge which means that the chamfer depression is provided at the position of high radial thickness of the bulge so that the total thickness of the bulge at the depression is not less than the housing wall thickness.
  • the housing is not weakened by the depression.
  • the figures show an automotive electrical coolant pump 10 for pumping a liquid coolant, for example water, to an internal combustion engine of an automotive vehicle.
  • the pump 10 is driven by an electric motor which is electronically commutated.
  • the coolant flows through the coolant inlet 24 into the axial pump wheel inlet 22 and is forced by the rotating pump wheel 40 radially outwardly into an outlet volute 28 from where the coolant leaves the pump 10 through the tangential coolant outlet 26.
  • the pump wheel 40 is supported by a rotatable rotor shaft 62 which also supports the permanent magnetic motor rotor 52.
  • the axial proximal end of the pump section housing 42 is fixed at the motor section housing 44 by a bordering arrangement 20 which is shown in detail in figures 4a and 4b .
  • the bordering arrangement 20 is generally circular and is defined by a circular fixation bulge 36 at the radial outside surface of a cylindrical end section 47 of the pump section housing 42 and by a circular bordering ring 34 embracing - seen in cross section - the fixation bulge 36.
  • the bordering ring 34 is provided at the axial end of the motor section housing 44 but not necessarily at the edge of the housing opening.
  • the bordering arrangement 20 is provided with three chamfer fixations 21 positioned in a rotational angle of 120° to each other.
  • the chamfer fixations 21 are defined by a chamfer depression 37 at the root of the fixation bulge 36 and by a corresponding bordering tongue 38 of the bordering ring 34.
  • the bordering tongues 38 are projecting into the corresponding chamfer depression 37, respectively.
  • the circular cylindrical end section 47 of the pump section housing 42 surrounds the corresponding circular cylindrical end section 47 of the motor section housing 44.
  • the corresponding circular cylindrical end section 49 of the motor section housing 44 has an axial length x of at least 20 mm.
  • the axial length y of the bordering arrangement 20 is less than half of the axial length x of the cylindrical end section of the motor section housing 44.
  • a sealing arrangement 31 is provided defined by a circular sealing groove 33 in the end section 49 of the motor section housing 44 and a circular flexible sealing ring 32 within the sealing groove 33. Seen in axial direction, the sealing arrangement 31 is not overlapping with the bordering arrangement 20.
  • the control section housing 46 is fixed at the motor section housing 44 by a bordering arrangement 18 similar or substantially identical to the bordering arrangement 20 between the pump section housing 42 and the motor section housing 44.
  • the bordering arrangement 20 is assembled by axially shifting the pump section housing 42 onto the corresponding axial end 49 of the motor section housing 44. After that, a fixation tool forces the corresponding parts of the open bordering ring 34 into the corresponding chamfer depressions 37 to define three bordering tongues 38 projecting into the corresponding chamfer depressions 37. Finally the bordering ring is completely bordered around the fixation bulge 36 over the entire circumference.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP13165573.0A 2013-04-26 2013-04-26 Pompe à liquide de refroidissement électrique d'automobile avec carter serti Active EP2796722B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13165573.0A EP2796722B1 (fr) 2013-04-26 2013-04-26 Pompe à liquide de refroidissement électrique d'automobile avec carter serti

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13165573.0A EP2796722B1 (fr) 2013-04-26 2013-04-26 Pompe à liquide de refroidissement électrique d'automobile avec carter serti

Publications (2)

Publication Number Publication Date
EP2796722A1 true EP2796722A1 (fr) 2014-10-29
EP2796722B1 EP2796722B1 (fr) 2016-03-16

Family

ID=48190276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13165573.0A Active EP2796722B1 (fr) 2013-04-26 2013-04-26 Pompe à liquide de refroidissement électrique d'automobile avec carter serti

Country Status (1)

Country Link
EP (1) EP2796722B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017140334A1 (fr) 2016-02-15 2017-08-24 Pierburg Pump Technology Gmbh Pompe électrique à liquide de refroidissement d'automobile
EP3242031A1 (fr) * 2016-05-03 2017-11-08 Robert Bosch GmbH Fixation d'un couvercle de pompe par des encoches formées dans une paroi de carter, lesdites encoches engageant un épaulement du couvercle
WO2017220119A1 (fr) 2016-06-20 2017-12-28 Pierburg Pump Technology Gmbh Pompe à fluide électrique pour un véhicule automobile
DE202018101223U1 (de) * 2018-03-05 2019-06-06 Evoguard Gmbh Gehäuse für eine Kreiselpumpe, Kreiselpumpe mit Gehäuse und Abfüllanlage umfassend eine solche Kreiselpumpe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4961018A (en) * 1989-08-11 1990-10-02 Wayne/Scott Fetzer Company Enclosed pump motor and wiring thereof
DE19646617A1 (de) * 1996-11-12 1998-05-14 Pierburg Ag Kühlmittelpumpe mit elektrisch kommutiertem Elektromotor
EP1635064A1 (fr) * 2004-09-14 2006-03-15 Dana Automotive Limited Assemblage de pompe
DE102006039712A1 (de) * 2006-08-24 2008-02-28 Robert Bosch Gmbh Förderaggregat
EP2469102A1 (fr) 2010-12-22 2012-06-27 Pierburg Pump Technology GmbH Pompe à moyen de refroidissement pour véhicule automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4961018A (en) * 1989-08-11 1990-10-02 Wayne/Scott Fetzer Company Enclosed pump motor and wiring thereof
DE19646617A1 (de) * 1996-11-12 1998-05-14 Pierburg Ag Kühlmittelpumpe mit elektrisch kommutiertem Elektromotor
EP1635064A1 (fr) * 2004-09-14 2006-03-15 Dana Automotive Limited Assemblage de pompe
DE102006039712A1 (de) * 2006-08-24 2008-02-28 Robert Bosch Gmbh Förderaggregat
EP2469102A1 (fr) 2010-12-22 2012-06-27 Pierburg Pump Technology GmbH Pompe à moyen de refroidissement pour véhicule automobile

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017140334A1 (fr) 2016-02-15 2017-08-24 Pierburg Pump Technology Gmbh Pompe électrique à liquide de refroidissement d'automobile
EP3242031A1 (fr) * 2016-05-03 2017-11-08 Robert Bosch GmbH Fixation d'un couvercle de pompe par des encoches formées dans une paroi de carter, lesdites encoches engageant un épaulement du couvercle
WO2017220119A1 (fr) 2016-06-20 2017-12-28 Pierburg Pump Technology Gmbh Pompe à fluide électrique pour un véhicule automobile
US10935028B2 (en) 2016-06-20 2021-03-02 Pierburg Pump Technology Gmbh Electric fluid pump for a motor vehicle
DE202018101223U1 (de) * 2018-03-05 2019-06-06 Evoguard Gmbh Gehäuse für eine Kreiselpumpe, Kreiselpumpe mit Gehäuse und Abfüllanlage umfassend eine solche Kreiselpumpe

Also Published As

Publication number Publication date
EP2796722B1 (fr) 2016-03-16

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