EP2098733A2 - Appareil électrique motorisé, en particulier un ventilateur électrique motorisé - Google Patents

Appareil électrique motorisé, en particulier un ventilateur électrique motorisé Download PDF

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Publication number
EP2098733A2
EP2098733A2 EP09154072A EP09154072A EP2098733A2 EP 2098733 A2 EP2098733 A2 EP 2098733A2 EP 09154072 A EP09154072 A EP 09154072A EP 09154072 A EP09154072 A EP 09154072A EP 2098733 A2 EP2098733 A2 EP 2098733A2
Authority
EP
European Patent Office
Prior art keywords
main cover
terminals
motor
cover
motorized
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
EP09154072A
Other languages
German (de)
English (en)
Other versions
EP2098733A3 (fr
EP2098733B1 (fr
Inventor
Marco Bussa
Marco Mastrototaro
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.)
Johnson Electric Asti SRL
Original Assignee
Johnson Electric Moncalieri 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 Johnson Electric Moncalieri SRL filed Critical Johnson Electric Moncalieri SRL
Publication of EP2098733A2 publication Critical patent/EP2098733A2/fr
Publication of EP2098733A3 publication Critical patent/EP2098733A3/fr
Application granted granted Critical
Publication of EP2098733B1 publication Critical patent/EP2098733B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • 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
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/064—Details of the rotor
    • 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
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/0646—Details of the stator
    • 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
    • F04D25/068—Mechanical details of the pump control unit
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings

Definitions

  • the present invention relates in general to motorized electrical apparatus.
  • the invention relates to a motorized electric apparatus, in particular a motorized electric fan, of the type comprising a rigid support housing defining internally a working chamber, and an electric motor, in particular a brushless motor, arranged inside the housing and connected thereto by vibration-damping means, for actuating an operating device such as a fan impeller extending inside the working chamber.
  • a motorized electric apparatus in particular a motorized electric fan, of the type comprising a rigid support housing defining internally a working chamber, and an electric motor, in particular a brushless motor, arranged inside the housing and connected thereto by vibration-damping means, for actuating an operating device such as a fan impeller extending inside the working chamber.
  • the electric motor is activated by rotational actuation of the associated operating device.
  • the combined rotation of the rotor part of the motor and the associated operating device results in the generation of vibrations, the transmission of which to the support housing (and to the structure to which the latter is fixed) is reduced by the damping means which are arranged between this motor and the support housing.
  • power supply and control circuits mounted on (at least) one support card or board are typically associated with the electric motor. These circuits typically also comprise fairly voluminous and relatively heavy components, such as electrolytic capacitors.
  • the same support card or board for the power supply and control circuits also typically has, connected thereto, means for dissipating the heat generated during operation of the circuit components.
  • the support card or board which houses the power supply and control circuits and the associated heat-dissipation means is fixed directly to the motor. Therefore, the weight of the power supply and control circuits as well as the weight of the associated heat-dissipation means and that of the support card or board is added to the overall weight of the motor, resulting in a substantial increase in the intensity of the vibrations produced during operation.
  • One object of the present invention is to propose a motorized electrical apparatus of the type initially mentioned, which is able to eliminate or at least substantially limit the aforementioned drawback of the solutions according to the prior art.
  • a motorized electrical apparatus In a motorized electrical apparatus according to the invention the abovementioned at least one support card or board for the power supply and control circuit means, together with the associated heat-dissipation means, is fixed directly to the support housing. In this way their weight is not added to that of the motor or to that of the source of the vibrations, but is instead added to the weight of the operationally stationery structure of the apparatus.
  • the support housing of the apparatus comprises a hollow body defining internally the abovementioned working chamber, and a cover which is fixed to this body, and the support card or board for the power supply and control circuit means is preferably fixed to this cover.
  • FIG. 1 denotes overall a motorized electrical apparatus, in particular a motorized electric fan, according to the invention.
  • the motorized fan 1 comprises a rigid support housing which, in the embodiment shown, comprises a hollow body 2 which is, for example, made of moulded plastic and to the top of which a cover 3, which is also conveniently made of moulded plastic, is fixed.
  • Fixing of the cover 3 to the body 2 is performed for example using screw means 4 ( Figures 1 and 2 ).
  • the body 2 is open at the top and defines internally a chamber 5 (see also Figure 3 ) communicating with a tangential outlet duct 6 formed integrally with this body.
  • the body 2 forms substantially a tangential outlet spiral or volute of a fan.
  • the chamber 5 houses an electric motor denoted overall by 7 in Figure 2 .
  • This motor is, for example, a direct-current brushless motor and has an operationally stationary stator part 8.
  • the stator part 8 of the electric motor 7 has a plurality of radial-arm assemblies 9 which extend in a practically radial direction outwards.
  • each assembly is interconnected by a connecting element 10 ( Figure 4 , right-hand side) having a progression in the form of a circle arc.
  • Respective sheaths 11 of a vibration-damping material, such as elastomer material ( Figures 2 to 4 ), for example in the form of essentially cylindrical sleeves, are mounted on these connecting elements 10.
  • the electric motor is positioned inside the container 2, with the ends 10 of the radial arms and the associated damping elements 11 which rest on a channel 12 provided in the top edge of the body 2.
  • the cover 3, complete with the associated devices which will be described below, is then fixed to the body 2 so that the connecting elements 10 and the associated vibration-damping elements 11 are firmly gripped between this cover 3 and said body 2.
  • the electric motor 7 comprises a rotor to which an operating device extending inside the bottom of the working chamber 5 is connected.
  • an operating device is, for example, a vaned fan impeller.
  • the body 2 of the support housing of the motorized fan 1 has at the bottom an axial intake opening 13 which is essentially concentric with the axis of rotation of the motor 7.
  • activation of the electric motor 7 causes the intake of an airflow into the chamber 5 through the opening 13 and the conveying of an airflow inside the tangential outlet duct 6 integrally formed in the body 2.
  • the stator 8 of the electric motor 7 has a plurality of electrical connection terminals 14 projecting upwards in the direction of the cover 3. These terminals are connected to the windings or phases of the motor 7.
  • the cover 3 is formed by an element made of moulded plastic and having an opening 15 in its central portion.
  • FIG. 5 and 6 16 denotes a printed circuit board or card which houses a plurality of electrical/electronic components which form power supply and control circuits of the electric motor 7.
  • FIGS 5 and 6 show only some components of these circuits, such as electrolytic capacitors 17 and electronic solid-state switches (MOSFET transistors) 18.
  • the board or card 16 also has a central opening, denoted by 19, with a shape essentially corresponding to that of the opening 15 in the cover 3.
  • the bottom side of the board or card 16 has, fixed thereto, a heat-dissipation element 20 made of metallic material, with the arrangement, in between, of a thin sheet 21 of material which is electrically conductive, but has at least a reasonable thermal conductivity.
  • the board or card 16 and the associated dissipator 20 are fixed to the bottom side of the cover 3 by means of a plurality of screws denoted by 22 in Figures 5 and 6 .
  • the bottom side of the cover 3 also has, fixed thereto, a covering element 23 which is, for example, made of plastic and covers the bottom side of the card or board 16.
  • This covering element 23 has an opening 24, through which the heat dissipator 20 extends, and a further central opening 25 which has a shape essentially corresponding to that of the opening 19 of the card or board 16 and to the opening 15 of the cover 3.
  • top cover piece 26 denotes a small top cover piece which is, for example, made of moulded plastic and closes at the top the opening 15 of the main cover 3.
  • the top cover piece 26 and the main cover 3 may be joined together for example by means of snap-engagement.
  • the main cover 3 has, integrally formed therein, a multi-pole connector 27 including a plurality of electrical terminals 28 ( Figure 2 ) for example in the form of flat pins connected, inside the cover 3, to the circuits mounted on the card 16.
  • the terminals 14 of the phases of the electric motor 7 are each connected in order to a corresponding terminal 29 incorporated in the cover 3 during moulding thereof ( Figure 7 ), for example by means of flexible electrically conductive braids. These braids may be provided at one end with a connector, designed to be connected to a respective phase terminal 14, and at the other end may be provided with a similar terminal designed to be connected to a terminal 29, or they may be soldered directly to this terminal 29.
  • the connectors connecting together the phase terminals 14 and the terminals 29 of the main cover are confined within the region situated between the main cover 3 and the associated top cover piece 26 which not only covers and closes the opening 15 but also extends so as to cover and close also the portion of the main cover 3 from which the terminals 29 protrude.
  • FIGS 9 to 12 show a variation of embodiment of the main cover 3.
  • parts and elements already described have again been assigned the same reference numbers.
  • the main cover 3 incorporates, during moulding thereof, three terminals 129 essentially in the form of a turret, one of which can be seen in detail in Figure 10 .
  • Each of these terminals has a top end 129a, with an opening 129b for engaging a screw or the like, and a bottom end 129c from which four stems 129d protrude downwards, said stems being intended to be soldered to corresponding conductors mounted on the circuit card or board 16.
  • connection between the phase terminals 14 of the windings of the electric motor 7 and the terminals 129 of the main cover 3, and therefore the power supply and control circuits mounted on the card or board 16, may be performed, for example, using connecting conductors such as that shown by way of example and denoted by 30 in Figure 12 .
  • This conductor essentially comprises a conductive braid 31 which has fixed, at one end thereof, a terminal 32 in the form of an eyelet intended to be fitted onto the top portion 129a of a corresponding terminal 129 and to be fixed to the latter by means of a screw and has fixed, at the other end, a terminal 33, for example of the so-called "fast-on" type, which can be connected to a corresponding phase terminal 14 of the electric motor 7.
  • the circuit card or board, with the power supply and control circuit components, as well as the associated heat dissipator, is fixed to the operationally stationary structure of the motorized electrical apparatus and not to the electric motor as was the case in the apparatus according to the prior art. As a result, it is possible to achieve a substantial reduction in the vibrations.
  • a further advantage of the solution according to the invention consists in the fact that the main cover 3 which helps form the support housing of the apparatus ensures at the same time effective protection of the circuits mounted on the card or board 16, without the need for specific measures, such as resin-coating of said circuits, the use of seals, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Frames (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP09154072.4A 2008-03-04 2009-03-02 Ventilateur électrique motorisé Expired - Fee Related EP2098733B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO20080159 ITTO20080159A1 (it) 2008-03-04 2008-03-04 Apparecchio elettrico motorizzato, in particolare motoventilatore elettrico.

Publications (3)

Publication Number Publication Date
EP2098733A2 true EP2098733A2 (fr) 2009-09-09
EP2098733A3 EP2098733A3 (fr) 2014-07-23
EP2098733B1 EP2098733B1 (fr) 2016-07-20

Family

ID=40293236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09154072.4A Expired - Fee Related EP2098733B1 (fr) 2008-03-04 2009-03-02 Ventilateur électrique motorisé

Country Status (2)

Country Link
EP (1) EP2098733B1 (fr)
IT (1) ITTO20080159A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2653729A1 (fr) * 2012-04-20 2013-10-23 ebm-papst Mulfingen GmbH & Co. KG Ventilateur radial avec un carter auxiliaire protégé électromagnétiquement pour l'électronique de contrôle
US20160053772A1 (en) * 2010-11-05 2016-02-25 Gentherm Incorporated Low-profile blowers and methods
CN106739939A (zh) * 2015-10-29 2017-05-31 法雷奥热系统公司 电机支撑单元和相应机动车辆加热、通风和/或空调装置
WO2018146424A1 (fr) * 2017-02-13 2018-08-16 Valeo Systemes Thermiques Ensemble de montage d'un moteur dans un dispositif de pulsion d'air pour un dispositif de chauffage, de ventilation et/ou de climatisation d'un vehicule automobile
US10160356B2 (en) 2014-05-09 2018-12-25 Gentherm Incorporated Climate control assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022511801A (ja) 2018-11-30 2022-02-01 ジェンサーム インコーポレイテッド 熱電調整システム及び方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419159A (en) * 1944-12-19 1947-04-15 Albert R Pezzillo Combination pump-motor-heater
US6098948A (en) * 1995-04-03 2000-08-08 Valeo Climatisation Device for the resilient fastening of an electric motor within a housing, especially for a motor vehicle
EP1063752A1 (fr) * 1999-06-25 2000-12-27 Calsonic Corporation Moteur sans balais
EP1793126A2 (fr) * 2005-11-30 2007-06-06 Greenwood Air Management Limited Dispositif d'amortissement pour un ventilateur électrique
WO2008019038A1 (fr) * 2006-08-04 2008-02-14 Hewlett-Packard Development Company, L.P. Module de ventilateur de refroidissement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312848A (en) * 1941-01-07 1943-03-02 Albert R Pezzillo Motor driven pump unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419159A (en) * 1944-12-19 1947-04-15 Albert R Pezzillo Combination pump-motor-heater
US6098948A (en) * 1995-04-03 2000-08-08 Valeo Climatisation Device for the resilient fastening of an electric motor within a housing, especially for a motor vehicle
EP1063752A1 (fr) * 1999-06-25 2000-12-27 Calsonic Corporation Moteur sans balais
EP1793126A2 (fr) * 2005-11-30 2007-06-06 Greenwood Air Management Limited Dispositif d'amortissement pour un ventilateur électrique
WO2008019038A1 (fr) * 2006-08-04 2008-02-14 Hewlett-Packard Development Company, L.P. Module de ventilateur de refroidissement

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10288084B2 (en) * 2010-11-05 2019-05-14 Gentherm Incorporated Low-profile blowers and methods
US11408438B2 (en) 2010-11-05 2022-08-09 Gentherm Incorporated Low-profile blowers and methods
US20160053772A1 (en) * 2010-11-05 2016-02-25 Gentherm Incorporated Low-profile blowers and methods
US9538889B2 (en) 2012-04-20 2017-01-10 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial blower
CN103375415B (zh) * 2012-04-20 2017-03-29 依必安-派特穆尔芬根股份有限两合公司 鼓风机
EP2653729A1 (fr) * 2012-04-20 2013-10-23 ebm-papst Mulfingen GmbH & Co. KG Ventilateur radial avec un carter auxiliaire protégé électromagnétiquement pour l'électronique de contrôle
CN103375415A (zh) * 2012-04-20 2013-10-30 依必安-派特穆尔芬根股份有限两合公司 鼓风机，特别是径流式鼓风机
US10160356B2 (en) 2014-05-09 2018-12-25 Gentherm Incorporated Climate control assembly
US10457173B2 (en) 2014-05-09 2019-10-29 Gentherm Incorporated Climate control assembly
US10647232B2 (en) 2014-05-09 2020-05-12 Gentherm Incorporated Climate control assembly
CN106739939A (zh) * 2015-10-29 2017-05-31 法雷奥热系统公司 电机支撑单元和相应机动车辆加热、通风和/或空调装置
CN106739939B (zh) * 2015-10-29 2022-02-01 法雷奥热系统公司 电机支撑单元和相应机动车辆加热、通风和/或空调装置
WO2018146424A1 (fr) * 2017-02-13 2018-08-16 Valeo Systemes Thermiques Ensemble de montage d'un moteur dans un dispositif de pulsion d'air pour un dispositif de chauffage, de ventilation et/ou de climatisation d'un vehicule automobile
FR3062971A1 (fr) * 2017-02-13 2018-08-17 Valeo Systemes Thermiques Ensemble de montage d'un moteur dans un dispositif de pulsion d'air pour un dispositif de chauffage, de ventilation et/ou de climatisation d'un vehicule automobile

Also Published As

Publication number Publication date
EP2098733A3 (fr) 2014-07-23
ITTO20080159A1 (it) 2009-09-05
EP2098733B1 (fr) 2016-07-20

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