EP0564938A1 - Centrifugal fan for automobile ventilation and heating - Google Patents

Centrifugal fan for automobile ventilation and heating Download PDF

Info

Publication number
EP0564938A1
EP0564938A1 EP93105122A EP93105122A EP0564938A1 EP 0564938 A1 EP0564938 A1 EP 0564938A1 EP 93105122 A EP93105122 A EP 93105122A EP 93105122 A EP93105122 A EP 93105122A EP 0564938 A1 EP0564938 A1 EP 0564938A1
Authority
EP
European Patent Office
Prior art keywords
impeller
blades
hub
air
shell
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Withdrawn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
EP93105122A
Other languages
German (de)
English (en)
French (fr)
Inventor
Renato Criscuolo
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.)
ELETTROVAGO SpA
Original Assignee
ELETTROVAGO 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
Application filed by ELETTROVAGO SpA filed Critical ELETTROVAGO SpA
Publication of EP0564938A1 publication Critical patent/EP0564938A1/en
Withdrawn legal-status Critical Current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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
    • 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
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • 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
    • F04D29/5806—Cooling the drive system

Definitions

  • the present invention falls within the field of automobiles, and more particularly relates to a centrifugal fan for air conditioning, heating and ventilation of cars.
  • Centrifugal fans for ventilating and, if necessary, heating the driver's cabin are known in which an impeller which is coaxially mounted with respect to its own electric motor, situated below.
  • the lower part of this motor is usually contained within a half-shell that is provided with an air intake.
  • the latter is connected to a casing which is located in a high pressure zone.
  • the air intake allows the air to penetrate in the lower part of the impeller, that is in the motor containing half-shell.
  • the fan due to its own action, generates a depression in its inner part, the concurrence of high pressure in the low part and depression in the high part creates an air circulation that flows on the outer and/or inner parts of the motor, according to the structure of the type of motor that is used (open or closed).
  • connection between the fan hub and the blades that form the outer structure is normally of a continuous type, with air passage holes.
  • the connection may be formed by a sheaf of thin plane spokes that determine gaps for the impeller motor air-cooling circulation.
  • a centrifugal fan for automobile ventilation and heating of the type comprising a half-shell for containing and bearing an electric motor on the shaft of which the hub of a centrifugal impeller is mounted, the impeller being substantially cylindrical in shape and having peripheral blades and a plurality of surfaces connecting said blades to the hub; the half-shell and the impeller being contained within a casing provided with an inlet for the air that is sucked up from front openings of the impeller and an outlet for delivering the air from the impeller to the driver's cabin; an air passage being provided for delivering air coming from the impeller to the half-shell and from the latter to the blades of the impeller itself; characterised in that the surfaces connecting the blades to the hub form further blades which determine a second impeller, coaxial to the first one and integral thereto, which is interposed between the inside of the half-shell and said peripheral blades.
  • a centrifugal fan or impeller 10 comproses a plurality of curved peripheral blades 11 that are connected to a central hub 13 by means of radial spokes 12.
  • the hub 13 is coaxially mounted on the rotor axis of a brushless electric motor 14 that is sketched in figs. 1 and 2.
  • each spoke 12 has a blade portion 21 adjacent to the hub 13.
  • Two outwardly and downwardly inclined spines 22 and 23 extend from the blade portions 21 and are connected to an annular base 24 that is joined to the peripheral blades 11.
  • the spokes 12 while performing their conventional function of connecting the inner and outer parts of the impeller, the spokes 12 have the function of increasing the air flow through the openings in the motor 14 (fig. 2, arrows B). Accordingly, the blade portions 21 are suitably inclined (fig. 3) like propeller blades, thereby forming a real axial fan that draws air from underneath as the impeller rotates. This action, in addition to the other cited effects, considerably increases the air flux that passes through the motor 14 and cools it.
  • centrifugal fan 10 is so shaped as to allow a radial flux of cooling air that comes from the motor underneath and is directed on the peripheral blades 11.
  • the hub 13' bears a cap 30 having downwardly directed concavity.
  • the peripheral edges of the cap 30 are rigidly connected to a substantially truncated-cone upwardly tapered surface 32 by means of a plurality of radially disposed vertical blades 31.
  • the surface 32 is joined to the annular base 24 which is in turn connected to the peripheral blades 11.
  • the centrifugal fan according to the invention is particularly advatageous for those cases in which it is driven by a brushless electric motor with an external rotor and with incorporated power electronics, as the latter require additional ventilation for cooling.

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)
EP93105122A 1992-04-06 1993-03-29 Centrifugal fan for automobile ventilation and heating Withdrawn EP0564938A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO920311 1992-04-06
ITTO920311A IT1259518B (it) 1992-04-06 1992-04-06 Ventola centrifuga per la ventilazione ed il riscaldamento di autoveicoli

Publications (1)

Publication Number Publication Date
EP0564938A1 true EP0564938A1 (en) 1993-10-13

Family

ID=11410382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93105122A Withdrawn EP0564938A1 (en) 1992-04-06 1993-03-29 Centrifugal fan for automobile ventilation and heating

Country Status (2)

Country Link
EP (1) EP0564938A1 (it)
IT (1) IT1259518B (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2737060A1 (fr) * 1995-07-21 1997-01-24 Valeo Climatisation Dispositif pour supporter un moteur electrique entrainant une turbine, notamment pour appareil de chauffage et/ou climatisation de vehicule automobile
FR2737062A1 (fr) * 1995-07-21 1997-01-24 Valeo Climatisation Dispositif pour supporter un moteur electrique entrainant une turbine, notamment pour appareil de chauffage et/ou climatisation de vehicule automobile
EP0805276A2 (en) * 1996-04-30 1997-11-05 Itt Automotive Electrical Systems, Inc. Blower assembly having integral air flow cooling duct
WO1997041630A1 (en) * 1996-04-30 1997-11-06 Siemens Canada Limited Blower wheel with axial air inlet for ventilation
FR2757907A1 (fr) * 1996-12-26 1998-07-03 Valeo Climatisation Roue de turbine centrifuge, notamment pour un systeme de chauffage/ventilation et/ou de climatisation de vehicule automobile
FR2781530A1 (fr) * 1998-07-22 2000-01-28 Valeo Climatisation Turbine centrifuge, notamment pour installation de chauffage et/ou de climatisation de vehicule automobile
CN1074098C (zh) * 1997-08-18 2001-10-31 台达电子工业股份有限公司 鼓风机的导流装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2155668A5 (it) * 1971-10-09 1973-05-18 Sueddeutsche Metallwerke Gmbh
FR2209410A5 (it) * 1972-11-03 1974-06-28 Technicair Sa
FR2236384A5 (en) * 1973-07-05 1975-01-31 Ferodo Sa Vehicle ventilating and heating fan unit - air passes around motor casing, and through holes in fan blade
FR2412976A1 (fr) * 1977-12-23 1979-07-20 Chausson Usines Sa Dispositif pour le montage et le refroidissement de moteurs electriques d'entrainement d'une turbine
DE3427565A1 (de) * 1984-07-26 1986-02-06 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Durch einen elektromotor angetriebenes radialgeblaese
WO1992010682A1 (de) * 1990-12-12 1992-06-25 Siemens Aktiengesellschaft Radiallüfter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2155668A5 (it) * 1971-10-09 1973-05-18 Sueddeutsche Metallwerke Gmbh
FR2209410A5 (it) * 1972-11-03 1974-06-28 Technicair Sa
FR2236384A5 (en) * 1973-07-05 1975-01-31 Ferodo Sa Vehicle ventilating and heating fan unit - air passes around motor casing, and through holes in fan blade
FR2412976A1 (fr) * 1977-12-23 1979-07-20 Chausson Usines Sa Dispositif pour le montage et le refroidissement de moteurs electriques d'entrainement d'une turbine
DE3427565A1 (de) * 1984-07-26 1986-02-06 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Durch einen elektromotor angetriebenes radialgeblaese
WO1992010682A1 (de) * 1990-12-12 1992-06-25 Siemens Aktiengesellschaft Radiallüfter

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2737060A1 (fr) * 1995-07-21 1997-01-24 Valeo Climatisation Dispositif pour supporter un moteur electrique entrainant une turbine, notamment pour appareil de chauffage et/ou climatisation de vehicule automobile
FR2737062A1 (fr) * 1995-07-21 1997-01-24 Valeo Climatisation Dispositif pour supporter un moteur electrique entrainant une turbine, notamment pour appareil de chauffage et/ou climatisation de vehicule automobile
WO1997004516A1 (fr) * 1995-07-21 1997-02-06 Valeo Climatisation Dispositif pour supporter un moteur electrique entrainant une turbine, notamment pour appareil de chauffage et/ou climatisation de vehicule automobile
CN1071507C (zh) * 1995-07-21 2001-09-19 瓦莱奥空调公司 驱动汽车加热器和/或空调器的涡轮电动机的支承装置
US5883451A (en) * 1995-07-21 1999-03-16 Valeo Climatisation Device for supporting an electric motor driving a turbine
US5878990A (en) * 1995-07-21 1999-03-09 Valeo Climatisation Device for supporting an electric motor driving a turbine, notably for heating and/or air conditioning equipment of a motor vehicle
US5814908A (en) * 1996-04-30 1998-09-29 Siemens Electric Limited Blower wheel with axial inlet for ventilation
WO1997041630A1 (en) * 1996-04-30 1997-11-06 Siemens Canada Limited Blower wheel with axial air inlet for ventilation
EP0805276A3 (en) * 1996-04-30 1999-05-19 Itt Automotive Electrical Systems, Inc. Blower assembly having integral air flow cooling duct
EP0805276A2 (en) * 1996-04-30 1997-11-05 Itt Automotive Electrical Systems, Inc. Blower assembly having integral air flow cooling duct
FR2757907A1 (fr) * 1996-12-26 1998-07-03 Valeo Climatisation Roue de turbine centrifuge, notamment pour un systeme de chauffage/ventilation et/ou de climatisation de vehicule automobile
US6095752A (en) * 1996-12-26 2000-08-01 Valeo Clamitisation Centrifugal blower impeller, especially for a heating and ventilating, and/or air conditioning, system for a motor vehicle
CN1074098C (zh) * 1997-08-18 2001-10-31 台达电子工业股份有限公司 鼓风机的导流装置
FR2781530A1 (fr) * 1998-07-22 2000-01-28 Valeo Climatisation Turbine centrifuge, notamment pour installation de chauffage et/ou de climatisation de vehicule automobile

Also Published As

Publication number Publication date
ITTO920311A0 (it) 1992-04-06
IT1259518B (it) 1996-03-20
ITTO920311A1 (it) 1993-10-06

Similar Documents

Publication Publication Date Title
JP3354157B2 (ja) 換気用の軸流空気入口を有するブロワーホイール
EP0921318B1 (en) Fan assembly having motor cooling enhancement
EP1878923A3 (en) Impeller of centrifugal fan and centrifugal fan disposed with the impeller
AU605042B2 (en) Shrouding for engine cooling fan
EP1016790A3 (en) Stator or axial flow fan
US20040101423A1 (en) Fan with motor ventilation system
EP1050682A3 (en) A motor-driven fan, particularly for a motor vehicle heat exchanger
MXPA03001054A (es) Motor de soplador.
US5342173A (en) Cowl for fan and its application to a vehicle motorized fan unit
US20100187919A1 (en) Electric Motor with Cooling Ventilator Effect
EP0293277B1 (en) Fan with motor cooling and enhancement
US4648312A (en) Apparatus for ventilating an enclosed area
CN106968985B (zh) 用于机舱空气压缩机的出口壳体
EP0651161B1 (en) Device for cooling en electric motor for a turbo-fan
EP0564938A1 (en) Centrifugal fan for automobile ventilation and heating
JPS5836169B2 (ja) 電動フアン・ユニツト
CN205154744U (zh) 离心式涡轮风叶及应用其的电机和食品搅拌机
KR20210114300A (ko) 에어 서큘레이터
US9920768B2 (en) Centrifugal fan assembly
EP0881394A2 (en) Fan with blades having integral rotating venturi
EP1070849A3 (en) Axial flow fan
US2582902A (en) Power-operated ventilator
US6379116B1 (en) Impeller and structure for an impeller housing
EP0074068B1 (en) Cooling device of automotive alternator
JPH07247991A (ja) 斜流ファン

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: A1

Designated state(s): CH DE ES FR GB LI

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19940414