EP2110530A1 - Pompe de recirculation de fluides dotée d'un dispositif de transmission du mouvement de rotation à arbre commandé associé - Google Patents

Pompe de recirculation de fluides dotée d'un dispositif de transmission du mouvement de rotation à arbre commandé associé Download PDF

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Publication number
EP2110530A1
EP2110530A1 EP09157580A EP09157580A EP2110530A1 EP 2110530 A1 EP2110530 A1 EP 2110530A1 EP 09157580 A EP09157580 A EP 09157580A EP 09157580 A EP09157580 A EP 09157580A EP 2110530 A1 EP2110530 A1 EP 2110530A1
Authority
EP
European Patent Office
Prior art keywords
armature
pump
axially
driven shaft
pump according
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Withdrawn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
EP09157580A
Other languages
German (de)
English (en)
Inventor
Piercarlo Boffelli
Erminio Depoli
Fabio Natale
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.)
Baruffaldi SpA
Original Assignee
Baruffaldi SpA
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
Priority claimed from ITMI20080675 external-priority patent/ITMI20080675A1/it
Priority claimed from ITMI20080676 external-priority patent/ITMI20080676A1/it
Application filed by Baruffaldi SpA filed Critical Baruffaldi SpA
Publication of EP2110530A1 publication Critical patent/EP2110530A1/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Withdrawn legal-status Critical Current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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps

Definitions

  • the present invention relates to a pump for recirculating a fluid for cooling vehicle engines, equipped with a device for actuating the associated driven shaft.
  • the technical problem which is posed, therefore, is to provide pumps for recirculating fluids, such as fluids for cooling vehicle engines, equipped with a device for operation of the associated driven shaft, able to cause rotation thereof when operated.
  • this device should have small dimensions, in particular in the radial direction, but at the same time should be able to provide high torques and/or a high number of revolutions also at a slow running speed of the engine, so as to be applicable also to high-capacity pumps of heavy vehicles which have an engine with a low rpm.
  • the device should be easy and inexpensive to produce and assemble and be able to be installed easily on the pump body without the need for special adaptation.
  • the pump body 11 has, arranged internally, a first bearing 12 which supports the shaft 2 of the impeller 1.
  • the pump body 11 is provided externally with a second bearing 13 which is keyed onto the shaft 2 by means of the associated inner ring 13a and an outer ring 13b carrying a flange 21 which has a radial pulley 21a suitable for engagement with a movement transmission belt 3 and a front surface 21b for contact with a friction part 31 integral with the armature 33 of an electromagnet coupling 30 which is situated axially on the outside of the pulley 21a and which comprises a fixed electromagnet 32 coaxially mounted on a support 32a fastened to the pump body 11, being arranged on the opposite side to the armature with respect to the flange 21.
  • Said armature 33 has eyelets 33a which are arranged along a suitable diameter of the armature itself and which receive, engaged inside them, axial end teeth 35a of a sleeve 35 keyed onto the driven shaft 2 on the opposite side to the pump body relative to the bearing 13; at the end opposite to that of the teeth 35a the sleeve 35 has an annular edge 35b able to form the reaction surface for springs 34 which are axially arranged between the annular edge 35b itself and the armature 33 which is thus pushed axially against the flange 21.
  • the armature 33 is able to perform movements in an axial direction towards/away from the flange 21, but is locked as regards relative rotation with respect to the sleeve 35.
  • the electromagnetic coupling 30 acts as a brake for the driven shaft 2 which is kept in the stable stopped condition.
  • a second embodiment of the pump according to the invention is envisaged, wherein the coupling 130 arranged between the electromagnet 32 and the armature 33 has a rotor 136 which is axially fixed and rotationally locked with the driven shaft 2.
  • Said armature 33 has seats 133 on its surface situated frontally opposite the rotor 136 and able to receive one end of respective compression springs 134 which are axially arranged between the said armature 33 and the rotor 136 and designed to exert an axial thrust on the armature 33, reacting against the axially fixed rotor 136.
  • the device allows operation in fail-safe mode, keeping the driven shaft rotating by means of the thrust of the springs also in the event of a fault in the electrical system, while being composed of a minimum number of components, thereby ensuring easy assembly and a low cost of the device as a whole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP09157580A 2008-04-15 2009-04-08 Pompe de recirculation de fluides dotée d'un dispositif de transmission du mouvement de rotation à arbre commandé associé Withdrawn EP2110530A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20080675 ITMI20080675A1 (it) 2008-04-15 2008-04-15 Dispositivo di trasmissione del moto di rotazione ad un albero condotto particolarmente per pompe di ricircolo di fluidi
ITMI20080676 ITMI20080676A1 (it) 2008-04-15 2008-04-15 Dispositivo di trasmissione frenatura del moto di rotazione ad un albero condotto particolarmente per pompe di ricircolo di fluidi

Publications (1)

Publication Number Publication Date
EP2110530A1 true EP2110530A1 (fr) 2009-10-21

Family

ID=40848138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09157580A Withdrawn EP2110530A1 (fr) 2008-04-15 2009-04-08 Pompe de recirculation de fluides dotée d'un dispositif de transmission du mouvement de rotation à arbre commandé associé

Country Status (1)

Country Link
EP (1) EP2110530A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2221496A3 (fr) * 2009-02-19 2011-01-12 Schaeffler Technologies AG & Co. KG Dispositif de séparation pour un embrayage à friction
CN113994099A (zh) * 2019-06-24 2022-01-28 巴鲁法蒂股份公司 用于车辆的冷却液泵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1481307A (en) * 1920-06-14 1924-01-22 Harve R Stuart Temperature-regulating mechanism for internal-combustion engines
FR1319912A (fr) * 1962-04-18 1963-03-01 Pintsch Bamag Ag Embrayage électromagnétique sans bagues
DE3915065A1 (de) * 1988-05-13 1989-11-23 Zahnradfabrik Friedrichshafen Antriebseinrichtung mit einer elektromagnetisch bestaetigten doppelkupplung
WO2004007923A1 (fr) * 2002-07-12 2004-01-22 Behr Gmbh & Co. Kg Dispositif pour l'entrainement d'une pompe a agent de refroidissement
EP1400697A1 (fr) * 2002-09-23 2004-03-24 Baruffaldi S.p.A. Dispositif pour commander le refroidissement d'un moteur à combustion interne
EP1659307A2 (fr) * 2004-11-22 2006-05-24 Baruffaldi S.p.A. Dispositif de transmission d'un mouvement de rotation sur un arbre, en particulier pour pompe centrifuge de refoulement
WO2006056494A1 (fr) * 2004-11-23 2006-06-01 Dayco Europe S.R.L. Con Unico Socio Dispositif de commande d'une pompe de recirculation destine a un circuit de refroidissement d'un moteur a combustion interne

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1481307A (en) * 1920-06-14 1924-01-22 Harve R Stuart Temperature-regulating mechanism for internal-combustion engines
FR1319912A (fr) * 1962-04-18 1963-03-01 Pintsch Bamag Ag Embrayage électromagnétique sans bagues
DE3915065A1 (de) * 1988-05-13 1989-11-23 Zahnradfabrik Friedrichshafen Antriebseinrichtung mit einer elektromagnetisch bestaetigten doppelkupplung
WO2004007923A1 (fr) * 2002-07-12 2004-01-22 Behr Gmbh & Co. Kg Dispositif pour l'entrainement d'une pompe a agent de refroidissement
EP1400697A1 (fr) * 2002-09-23 2004-03-24 Baruffaldi S.p.A. Dispositif pour commander le refroidissement d'un moteur à combustion interne
EP1659307A2 (fr) * 2004-11-22 2006-05-24 Baruffaldi S.p.A. Dispositif de transmission d'un mouvement de rotation sur un arbre, en particulier pour pompe centrifuge de refoulement
WO2006056494A1 (fr) * 2004-11-23 2006-06-01 Dayco Europe S.R.L. Con Unico Socio Dispositif de commande d'une pompe de recirculation destine a un circuit de refroidissement d'un moteur a combustion interne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2221496A3 (fr) * 2009-02-19 2011-01-12 Schaeffler Technologies AG & Co. KG Dispositif de séparation pour un embrayage à friction
CN113994099A (zh) * 2019-06-24 2022-01-28 巴鲁法蒂股份公司 用于车辆的冷却液泵

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