EP1225341A2 - Ventilateur électrique - Google Patents

Ventilateur électrique Download PDF

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Publication number
EP1225341A2
EP1225341A2 EP02000923A EP02000923A EP1225341A2 EP 1225341 A2 EP1225341 A2 EP 1225341A2 EP 02000923 A EP02000923 A EP 02000923A EP 02000923 A EP02000923 A EP 02000923A EP 1225341 A2 EP1225341 A2 EP 1225341A2
Authority
EP
European Patent Office
Prior art keywords
electric fan
impeller
fixed
support
bracket
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
EP02000923A
Other languages
German (de)
English (en)
Other versions
EP1225341B1 (fr
EP1225341A3 (fr
Inventor
Marco Bussa
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.)
Gate SRL
Original Assignee
Gate SRL
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 Gate SRL filed Critical Gate SRL
Publication of EP1225341A2 publication Critical patent/EP1225341A2/fr
Publication of EP1225341A3 publication Critical patent/EP1225341A3/fr
Application granted granted Critical
Publication of EP1225341B1 publication Critical patent/EP1225341B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • 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
    • F04D25/066—Linear Motors
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5813—Cooling the control unit

Definitions

  • the present invention relates to an electric fan usable, for example, for cooling a heat exchanger such as a radiator associated with the internal combustion engine of a motor vehicle.
  • the subject of the invention is an electric fan of the type comprising a blade impeller and an associated electric motor including a rotor part comprising a ring of permanent magnets fixed to a peripheral ring of the impeller, and a stator part which faces a portion of the said ring of magnets of the impeller and which includes a winding and a support structure in which the impeller is rotatably mounted and to which the said stator part of the motor is fixed.
  • the object of the present invention is to provide an electric fan of the above-specified type, which has a particularly simple structure which can be assembled and installed in a simple and economic manner.
  • an electric fan of the above-specified type characterised in that the said support structure comprises a bracket of generally elongate form having a first end provided with means for supporting rotation of the impeller and a second end to which the said stator part of the electric motor is fixed.
  • a receptacle is formed in the said second end of the bracket, which can receive control circuit means coupled to the stator part of the electric motor.
  • the bracket is made of a metal material such as aluminium, and is in heat exchange relation with at least some components of the said circuit means in order to encourage the dissipation of heat.
  • the winding of the stator part is made with stacks of laminations of electrically conductive material such as copper or its alloys, carried by a support plate which also carries connection conductors for interconnecting them.
  • an electric fan 1 comprises a support casing 2 in which there is defined an essentially circular passage 3. At the exit from this passage, that is to say essentially on the rear side of the support body 2, extends a support ring 4 interconnected with the body 2 by means of a series of spokes 5.
  • the electric fan 1 comprises an impeller generally indicated 6, having a hub 7 from which extends a ring of arcuate blades 8. The outer ends of these blades are joined to a peripheral ring 9.
  • the hub 7, the blades 8 and the peripheral ring 9 of the impeller are made in one piece of moulded plastics material.
  • the reference numeral 10 indicates a metal ring on the outer surface of which is fixed, for example by adhesive, a ring 11 of permanent magnets 12.
  • the ring 2 and the ring 11 formed by the magnets 12 are embedded in the peripheral ring 9 of the bladed impeller 6 upon moulding of this latter, in such a way that the rotor part of the motor associated with this impeller is practically integral with it.
  • a tubular metal insert 13 is conveniently embedded, upon moulding, in the hub 7 of the impeller 6, at the ends of which are defined two seats 14 and 15 of greater diameter to allow respective bearing supports 16 and 17 (Figure 1) to be fitted to them.
  • the electric fan 1 further includes a support bracket generally indicated 20 in Figure 1 and 4.
  • This support bracket 20 is conveniently made of metal such as aluminium or its alloys. It has a generally elongate form and one end 20a thereof carries a pin 21 which is inserted into the bearing support 16 and 17 of the impeller 6 to act as a fixed shaft for the rotation of this latter.
  • the end 20a of the bracket 20 further has three holes for the passage of screws which, being engaged in corresponding holes of the ring 4 of the support body 2, contribute to the fixing of the bracket 20 to this body.
  • the other end 20b of the bracket 20 forms a receptacle 23 in which is conveniently housed a circuit board (not illustrated) carrying the control circuit components associated with the motor of the electric fan.
  • a circuit board (not illustrated) carrying the control circuit components associated with the motor of the electric fan.
  • these components in the mounted condition, are in heat exchange relationship with the bracket 20 which therefore also acts as a dissipater for heat developed in operation of these components.
  • the end portion 20b of the bracket 20 has a pair of through holes 24 (only one of which is visible in Figure 4) for the passage of corresponding fixing screws which allow this end of the bracket 20 also to be fixed to the support body 2.
  • the stator part comprises a stack of stator laminations 28 in the form of arcuate segments, forming a plurality of teeth 29 alternating with recesses 30. Around these teeth and in the said recesses are wound conductors which form the winding 31 (Figure 1) of the stator part.
  • stator laminations 28 and the terminal block 25 are conveniently fixed to the bracket 20 by means of the same pair of screws.
  • the intermediate portion of the support bracket 20 has a plurality of longitudinal slots 32 intended to allow the passage of air which in operation is blown by the impeller 20 into the passage 3 of the support body 2.
  • the intermediate portion of the support bracket 20 forms a plurality of angularly spaced deflector elements or flow straighteners 40.
  • a similar series of deflector elements or flow straighteners indicated 41 in Figure 6 extend from the support ring 4 to the outlet of the conveyor duct 3.
  • the deflectors or flow straighteners 41 form an angularly complementary assembly to that formed by the deflectors or flow straighteners 40 of the support bracket 20.
  • the bracket 20 when the bracket 20 is mounted in position on the body 2 its deflectors or flow straighteners 40 combine with the deflectors or flow straighteners 41 to form, overall, a ring of angularly equally spaced deflectors or straighteners.
  • each deflector or flow straightener 40 has in its radially innermost region an essentially straight cross section as shown in Figure 7, which progressively curves in the direction of its radially outer portion in correspondence with which, as seen in Figure 8, its cross section has an accentuated curvature.
  • the flow straighteners 41 of the support body 2 are in its radially innermost region and progressively curves in the direction of its radially outer portion in correspondence with which, as seen in Figure 8, its cross section has an accentuated curvature.
  • the flow straighteners 41 of the support body 2 has in its radially innermost region an essentially straight cross section as shown in Figure 7, which progressively curves in the direction of its radially outer portion in correspondence with which, as seen in Figure 8, its cross section has an accentuated curvature.
  • the flow straighteners 41 of the support body 2 has in its radially innermost region and progressively curves in the direction of its radially outer portion in correspondence with which, as seen in Figure 8, its cross section has an accentuated curvature
  • the support bracket 20 essentially corresponds to that previously described with reference to Figures 1 and 4.
  • the winding of the stator part of the electric motor must be made with conductors having a large cross section for the purpose of ensuring a high performance.
  • the formation of windings with conductors of large cross section is a complicated operation.
  • FIGS. 1-10 illustrate portions of the stator part of the motor associated with the electric fan, in which the winding 31 is made with stacks 50 of laminations 51 of electrically conductive material such as copper or its alloys, carried by a support plate 52 of electrically insulating material which carries connection conductors 53 for interconnecting them ( Figure 11).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Saccharide Compounds (AREA)
  • Insulated Conductors (AREA)
EP02000923A 2001-01-19 2002-01-16 Ventilateur électrique Expired - Lifetime EP1225341B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITTO20010038 2001-01-19
IT2001TO000038A ITTO20010038A1 (it) 2001-01-19 2001-01-19 Elettroventilatore.
ITTO000038 2001-01-19

Publications (3)

Publication Number Publication Date
EP1225341A2 true EP1225341A2 (fr) 2002-07-24
EP1225341A3 EP1225341A3 (fr) 2003-01-22
EP1225341B1 EP1225341B1 (fr) 2008-12-17

Family

ID=11458404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02000923A Expired - Lifetime EP1225341B1 (fr) 2001-01-19 2002-01-16 Ventilateur électrique

Country Status (5)

Country Link
US (1) US20020110456A1 (fr)
EP (1) EP1225341B1 (fr)
DE (1) DE60230347D1 (fr)
HK (1) HK1048351A1 (fr)
IT (1) ITTO20010038A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008049757A1 (de) * 2008-09-30 2010-04-01 GM Global Technology Operations, Inc., Detroit Gebläse mit Luftschaufeln
CN105443446A (zh) * 2015-12-02 2016-03-30 珠海格力电器股份有限公司 电风扇机头锁紧结构和电风扇

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8282348B2 (en) * 2007-03-05 2012-10-09 Xcelaero Corporation Fan with strut-mounted electrical components
DE102009045655A1 (de) * 2009-10-14 2011-04-21 Robert Bosch Gmbh Vollintegriertes Gebläsemodul

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501933A1 (fr) * 1981-03-13 1982-09-17 Peugeot Aciers Et Outillage Unite de ventilation, notamment pour un moteur a combustion interne
DE19612679A1 (de) * 1996-03-29 1997-10-09 Temic Auto Electr Motors Gmbh Kühlerventilator für Kraftfahrzeuge
FR2766302A1 (fr) * 1997-07-17 1999-01-22 Valeo Climatisation Moteur electrique, notamment de vehicule automobile, a radiateur de refroidissement a configuration d'ailettes variable
DE19800570A1 (de) * 1998-01-09 1999-07-15 Bayerische Motoren Werke Ag Gebläse mit einem Lüfterrad
FR2778975A1 (fr) * 1998-05-20 1999-11-26 Valeo Thermique Moteur Sa Module d'echange de chaleur, en particulier pour vehicule automobile
US6158979A (en) * 1997-07-17 2000-12-12 Valeo Climatisation And Valeo Thermique Moteur Device for fixing a motor-fan unit on a motor vehicle element, in particular a heat exchanger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285541B (en) * 1994-01-05 1997-04-16 Alex Horng Electric fans and method of assembly thereof
US6024543A (en) * 1997-11-07 2000-02-15 Zero Corporation Blower wheel having interior motor cooling ribs
JPH11214877A (ja) * 1998-01-22 1999-08-06 Matsushita Electric Ind Co Ltd 電子機器の冷却装置およびその冷却ファン
US6227822B1 (en) * 1998-10-20 2001-05-08 Lakewood Engineering And Manufacturing Co. Fan with improved electric motor and mounting
KR100548036B1 (ko) * 1998-12-31 2006-05-09 한라공조주식회사 축류팬용 안내깃과 그 안내깃을 구비한 축류팬 슈라우드 조립체
US20020021973A1 (en) * 2000-08-18 2002-02-21 Horton, Inc. Circumferential arc segment motor cooling fan

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501933A1 (fr) * 1981-03-13 1982-09-17 Peugeot Aciers Et Outillage Unite de ventilation, notamment pour un moteur a combustion interne
DE19612679A1 (de) * 1996-03-29 1997-10-09 Temic Auto Electr Motors Gmbh Kühlerventilator für Kraftfahrzeuge
FR2766302A1 (fr) * 1997-07-17 1999-01-22 Valeo Climatisation Moteur electrique, notamment de vehicule automobile, a radiateur de refroidissement a configuration d'ailettes variable
US6158979A (en) * 1997-07-17 2000-12-12 Valeo Climatisation And Valeo Thermique Moteur Device for fixing a motor-fan unit on a motor vehicle element, in particular a heat exchanger
DE19800570A1 (de) * 1998-01-09 1999-07-15 Bayerische Motoren Werke Ag Gebläse mit einem Lüfterrad
FR2778975A1 (fr) * 1998-05-20 1999-11-26 Valeo Thermique Moteur Sa Module d'echange de chaleur, en particulier pour vehicule automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008049757A1 (de) * 2008-09-30 2010-04-01 GM Global Technology Operations, Inc., Detroit Gebläse mit Luftschaufeln
CN105443446A (zh) * 2015-12-02 2016-03-30 珠海格力电器股份有限公司 电风扇机头锁紧结构和电风扇
CN105443446B (zh) * 2015-12-02 2018-04-13 珠海格力电器股份有限公司 电风扇机头锁紧结构和电风扇

Also Published As

Publication number Publication date
EP1225341B1 (fr) 2008-12-17
ITTO20010038A1 (it) 2002-07-19
HK1048351A1 (zh) 2003-03-28
EP1225341A3 (fr) 2003-01-22
DE60230347D1 (de) 2009-01-29
ITTO20010038A0 (it) 2001-01-19
US20020110456A1 (en) 2002-08-15

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