EP1225341B1 - An electric fan - Google Patents

An electric fan Download PDF

Info

Publication number
EP1225341B1
EP1225341B1 EP02000923A EP02000923A EP1225341B1 EP 1225341 B1 EP1225341 B1 EP 1225341B1 EP 02000923 A EP02000923 A EP 02000923A EP 02000923 A EP02000923 A EP 02000923A EP 1225341 B1 EP1225341 B1 EP 1225341B1
Authority
EP
European Patent Office
Prior art keywords
impeller
bracket
electric fan
support
fixed
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.)
Expired - Lifetime
Application number
EP02000923A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1225341A2 (en
EP1225341A3 (en
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/en
Publication of EP1225341A3 publication Critical patent/EP1225341A3/en
Application granted granted Critical
Publication of EP1225341B1 publication Critical patent/EP1225341B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 of the kind defined in the preamble of claim 1, usable, for example, for cooling a heat exchanger such as a radiator associated with the internal combustion engine of a motor vehicle.
  • FR-A-2 501 933 discloses a fan of this type with four support brackets which join an octagonal stator structure to a central support ring for the impeller.
  • a rotor position sensor is carried by the stator structure between two stator polepieces.
  • the object of the present invention is to provide an improved 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.
  • 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 10 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
  • 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 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)
  • Insulated Conductors (AREA)
  • Saccharide Compounds (AREA)
EP02000923A 2001-01-19 2002-01-16 An electric fan Expired - Lifetime EP1225341B1 (en)

Applications Claiming Priority (3)

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

Publications (3)

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

Family

ID=11458404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02000923A Expired - Lifetime EP1225341B1 (en) 2001-01-19 2002-01-16 An electric fan

Country Status (5)

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

Families Citing this family (4)

* 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
DE102008049757A1 (de) * 2008-09-30 2010-04-01 GM Global Technology Operations, Inc., Detroit Gebläse mit Luftschaufeln
DE102009045655A1 (de) * 2009-10-14 2011-04-21 Robert Bosch Gmbh Vollintegriertes Gebläsemodul
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

Family Cites Families (12)

* 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
GB2285541B (en) * 1994-01-05 1997-04-16 Alex Horng Electric fans and method of assembly thereof
DE19612679C2 (de) * 1996-03-29 2003-10-30 Temic Auto Electr Motors Gmbh Kühlerventilator für Kraftfahrzeuge
FR2766235B1 (fr) * 1997-07-17 1999-09-24 Valeo Climatisation Dispositif de fixation d'un groupe moto-ventilateur sur un element d'un vehicule automobile, notamment un echangeur de chaleur
FR2766302B1 (fr) * 1997-07-17 1999-09-24 Valeo Climatisation Moteur electrique, notamment de vehicule automobile, a radiateur de refroidissement a configuration d'ailettes variable
US6024543A (en) * 1997-11-07 2000-02-15 Zero Corporation Blower wheel having interior motor cooling ribs
DE19800570B4 (de) * 1998-01-09 2004-09-02 Bayerische Motoren Werke Ag Gebläse mit einem Lüfterrad
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
FR2778975B1 (fr) * 1998-05-20 2000-08-04 Valeo Thermique Moteur Sa Module d'echange de chaleur, en particulier pour vehicule automobile
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
CA2415877A1 (en) * 2000-08-18 2002-02-28 Horton, Inc. Circumferential arc segment motor cooling fan

Also Published As

Publication number Publication date
ITTO20010038A1 (it) 2002-07-19
ITTO20010038A0 (it) 2001-01-19
HK1048351A1 (zh) 2003-03-28
EP1225341A2 (en) 2002-07-24
EP1225341A3 (en) 2003-01-22
US20020110456A1 (en) 2002-08-15
DE60230347D1 (de) 2009-01-29

Similar Documents

Publication Publication Date Title
US6740995B2 (en) Automotive alternator
EP0649213B1 (en) Electric rotating machine
US6184600B1 (en) Alternating-current generator for vehicles and heat sink incorporated therein
US20160197535A1 (en) Electric machine
US6078116A (en) Alternator for vehicle
EP0488961B1 (en) A fan, particularly for motor vehicles
US20030117033A1 (en) Motor vehicle alternator
EP0671803B1 (en) Alternator for vehicle
US5952749A (en) Cooling arrangement of alternator
US20080018192A1 (en) Permanent magnet motor
US8113775B2 (en) Axial flow fan
EP0977342B1 (en) Ac generator having claw-pole rotor
JPH0236756A (ja) 電子転流式電動機、送風機と一体の該電動機、ならびに該電動機の静止および回転可能なアセンブリ
EP1777798B1 (en) Rotating electric machine
US7358630B2 (en) Ventilating device for rotary electrical machine
US8398378B2 (en) Tangential drive module assembly and method of assembly for airflow induction
WO2021100292A1 (ja) スロットレス型電動機、電動送風機および電気掃除機
US5007801A (en) Impeller made from a sheet-metal disk and method of manufacturing same
EP1225341B1 (en) An electric fan
AU2005226131A1 (en) Rotating electrical machine, in particular motor vehicle alternator, whereof the inputs/outputs comprise fins inclined relative to the fan blades
EP1443630B1 (en) Generator fan
JPH02219447A (ja) スタータの電機子
GB2398842A (en) Cooling fan for alternator
CN107836072B (zh) 具有增大负压的涡轮的旋转电机
CN114982105A (zh) 电子换向直流马达

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20030717

AKX Designation fees paid

Designated state(s): DE FR GB

GRAC Information related to communication of intention to grant a patent modified

Free format text: ORIGINAL CODE: EPIDOSCIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GATE S.R.L.

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60230347

Country of ref document: DE

Date of ref document: 20090129

Kind code of ref document: P

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090130

Year of fee payment: 8

REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1048351

Country of ref document: HK

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090130

Year of fee payment: 8

26N No opposition filed

Effective date: 20090918

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100116

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100116

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110121

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120801

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60230347

Country of ref document: DE

Effective date: 20120801