US20020110456A1 - Electric fan - Google Patents

Electric fan Download PDF

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Publication number
US20020110456A1
US20020110456A1 US10/050,572 US5057202A US2002110456A1 US 20020110456 A1 US20020110456 A1 US 20020110456A1 US 5057202 A US5057202 A US 5057202A US 2002110456 A1 US2002110456 A1 US 2002110456A1
Authority
US
United States
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.)
Abandoned
Application number
US10/050,572
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English (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
Assigned to GATE S.P.A. reassignment GATE S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUSSA, MARCO
Publication of US20020110456A1 publication Critical patent/US20020110456A1/en
Assigned to WILMINGTON TRUST, NATIONAL ASSOCIATION reassignment WILMINGTON TRUST, NATIONAL ASSOCIATION SECURITY AGREEMENT Assignors: GLOBALFOUNDRIES INC.
Assigned to GLOBALFOUNDRIES INC. reassignment GLOBALFOUNDRIES INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: WILMINGTON TRUST, NATIONAL ASSOCIATION
Abandoned 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.
  • FIG. 1 is a partly exploded perspective view of an electric fan according to the invention
  • FIG. 2 is an axially sectioned partial view of a peripheral portion of the impeller of the electric fan of the invention
  • FIG. 3 is an axially sectioned partial view of the hub of the impeller
  • FIG. 4 is a perspective view of a support bracket of the electric fan
  • FIG. 5 is a perspective view of a variant embodiment of the support bracket
  • FIG. 6 is a perspective view which shows the bracket of FIG. 5 in association with an air conveying support structure for the electric fan;
  • FIGS. 7 and 8 are sectioned views taken on the lines VII-VII and VIII-VIII respectively of FIG. 5;
  • FIG. 9 is a partial perspective view which shows a particular way of making the stator part of an electric fan according to the invention.
  • FIG. 10 is a perspective view, on an enlarged scale, of a detail seen from the direction of the arrow X of FIG. 9;
  • FIG. 11 is a perspective view which shows the detail of FIG. 10 seen from the direction of the arrow XI of this Figure.
  • 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 (FIG. 1) to be fitted to them.
  • the electric fan 1 further includes a support bracket generally indicated 20 in FIG. 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 20 a 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 20 a 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 20 b 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 20 b of the bracket 20 has a pair of through holes 24 (only one of which is visible in FIG. 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 (FIG. 1) of the stator part.
  • 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 .
  • FIGS. A variant embodiment of the support bracket 20 will now be described with reference to FIGS. from 5 to 8 .
  • the parts and elements which are the same as or essentially equivalent to parts and elements already described have been again allocated the same reference numerals.
  • 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 FIG. 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 FIG. 7, which progressively curves in the direction of its radially outer portion in correspondence with which, as seen in FIG. 8, its cross section has an accentuated curvature.
  • the flow straighteners 41 of the support body 2 are essentially straight cross sections as shown in FIG. 7, which progressively curves in the direction of its radially outer portion in correspondence with which, as seen in FIG. 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 FIG. 7, which progressively curves in the direction of its radially outer portion in correspondence with which, as seen in FIG. 8, its cross section has an accentuated curvature.
  • the flow straighteners 41 of the support body 2 is obviously true.
  • the support bracket 20 essentially corresponds to that previously described with reference to FIGS. 1 and 4.
  • FIG. 11 These Figures 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 (FIG. 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)
US10/050,572 2001-01-19 2002-01-18 Electric fan Abandoned US20020110456A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2001A000038 2001-01-19
IT2001TO000038A ITTO20010038A1 (it) 2001-01-19 2001-01-19 Elettroventilatore.

Publications (1)

Publication Number Publication Date
US20020110456A1 true US20020110456A1 (en) 2002-08-15

Family

ID=11458404

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/050,572 Abandoned US20020110456A1 (en) 2001-01-19 2002-01-18 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080219841A1 (en) * 2007-03-05 2008-09-11 Xcelaero Corporation Fan with strut-mounted electrical components
CN102575683A (zh) * 2009-10-14 2012-07-11 罗伯特·博世有限公司 全集成化的风扇模块

Families Citing this family (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
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5492458A (en) * 1994-01-04 1996-02-20 Horng; Alex Stator of electric fan
US6024543A (en) * 1997-11-07 2000-02-15 Zero Corporation Blower wheel having interior motor cooling ribs
US6210134B1 (en) * 1998-01-22 2001-04-03 Matsushita Electric Industrial Co., Ltd Cooling device and cooling-fan-motor thereof for electronic apparatuses
US6227822B1 (en) * 1998-10-20 2001-05-08 Lakewood Engineering And Manufacturing Co. Fan with improved electric motor and mounting
US20020021973A1 (en) * 2000-08-18 2002-02-21 Horton, Inc. Circumferential arc segment motor cooling fan
US6398492B1 (en) * 1998-12-31 2002-06-04 Halla Climate Control Corp. Airflow guide stator vane for axial flow fan and shrouded axial flow fan assembly having such airflow guide stator vanes

Family Cites Families (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
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
DE19800570B4 (de) * 1998-01-09 2004-09-02 Bayerische Motoren Werke Ag Gebläse mit einem Lüfterrad
FR2778975B1 (fr) * 1998-05-20 2000-08-04 Valeo Thermique Moteur Sa Module d'echange de chaleur, en particulier pour vehicule automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5492458A (en) * 1994-01-04 1996-02-20 Horng; Alex Stator of electric fan
US6024543A (en) * 1997-11-07 2000-02-15 Zero Corporation Blower wheel having interior motor cooling ribs
US6210134B1 (en) * 1998-01-22 2001-04-03 Matsushita Electric Industrial Co., Ltd Cooling device and cooling-fan-motor thereof for electronic apparatuses
US6227822B1 (en) * 1998-10-20 2001-05-08 Lakewood Engineering And Manufacturing Co. Fan with improved electric motor and mounting
US6398492B1 (en) * 1998-12-31 2002-06-04 Halla Climate Control Corp. Airflow guide stator vane for axial flow fan and shrouded axial flow fan assembly having such airflow guide stator vanes
US20020021973A1 (en) * 2000-08-18 2002-02-21 Horton, Inc. Circumferential arc segment motor cooling fan

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080219841A1 (en) * 2007-03-05 2008-09-11 Xcelaero Corporation Fan with strut-mounted electrical components
US8282348B2 (en) * 2007-03-05 2012-10-09 Xcelaero Corporation Fan with strut-mounted electrical components
CN102575683A (zh) * 2009-10-14 2012-07-11 罗伯特·博世有限公司 全集成化的风扇模块

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
EP1225341B1 (en) 2008-12-17
DE60230347D1 (de) 2009-01-29

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Date Code Title Description
AS Assignment

Owner name: GATE S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BUSSA, MARCO;REEL/FRAME:012794/0583

Effective date: 20020118

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: WILMINGTON TRUST, NATIONAL ASSOCIATION, DELAWARE

Free format text: SECURITY AGREEMENT;ASSIGNOR:GLOBALFOUNDRIES INC.;REEL/FRAME:049490/0001

Effective date: 20181127

AS Assignment

Owner name: GLOBALFOUNDRIES INC., CAYMAN ISLANDS

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION;REEL/FRAME:054636/0001

Effective date: 20201117