EP2495446A1 - Elastisches Isoliersystem für einen Elektromotor zum Reduzieren der Schwingungsübertragung - Google Patents

Elastisches Isoliersystem für einen Elektromotor zum Reduzieren der Schwingungsübertragung Download PDF

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Publication number
EP2495446A1
EP2495446A1 EP12157664A EP12157664A EP2495446A1 EP 2495446 A1 EP2495446 A1 EP 2495446A1 EP 12157664 A EP12157664 A EP 12157664A EP 12157664 A EP12157664 A EP 12157664A EP 2495446 A1 EP2495446 A1 EP 2495446A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
seat
cover
elastic insulation
insulation means
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Withdrawn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
EP12157664A
Other languages
English (en)
French (fr)
Inventor
Raffaele Gataleta
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.)
Denso Thermal Systems SpA
Original Assignee
Denso Thermal Systems 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 Denso Thermal Systems SpA filed Critical Denso Thermal Systems SpA
Publication of EP2495446A1 publication Critical patent/EP2495446A1/de
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a fan assembly for air treatment systems for vehicles, comprising a support case having a seat in which an electric motor bearing a fan is housed.
  • An air treatment system for vehicles normally includes a variable-speed centrifugal fan generating a flow of air which is directed, after any necessary heating and/or cooling/dehumidifying, into the passenger compartment of the vehicle.
  • the fan assembly of an air treatment system for vehicles is normally formed by a case of injection-moulded plastic material having a seat in which an electric motor bearing a centrifugal fan is mounted. The electric motor is connected to an electrical power source by a connector extending through an opening in the case.
  • a fan assembly of the type defined above is described in EP 1 516 756 .
  • This fan assembly comprises radial support elements of elastic material, overmoulded on the inner surface of the seat, together with securing elements which are also of elastic material, overmoulded on the bottom of the seat.
  • the securing screws used to fasten the motor to the support case crush the securing elements on the bottom of the seat, thus introducing a degree of rigidity into the system.
  • the radial support elements may be damaged by the sharp edges of the electric motor frame, which may cause some parts to be lost.
  • One object of the present invention is therefore to provide an improved fan assembly which can at least partially overcome the aforesaid drawbacks, and which can be assembled more simply and rapidly than the aforesaid prior art fan assembly.
  • the support case comprises a support base and a cover secured to the support base and provided with an opening through which a shaft of the electric motor protrudes, wherein opposite ends of the electric motor bear against the bottom of the seat within the support base and against the cover, respectively, through first and second elastic insulation means arranged on the bottom of the seat and on the cover, respectively, which are adapted to bias the electric motor axially, and to cause the electric motor to be radially centred with respect to the seat.
  • the fan assembly 10 indicates a fan assembly for air treatment systems for vehicles.
  • the fan assembly 10 comprises a support case 11 made of injection-moulded plastic material.
  • the plastic material used for moulding the support case 11 can be polypropylene or a similar thermoplastic material.
  • the plastic material forming the support case 11 can be mixed with fillers such as talc.
  • the support case 11 comprises a support base 12 and a cover 13 secured to this support base 12 and provided with an opening 13a.
  • the cover 13 can be secured to the support base 11, for example by means of sprung snap-fitting elements (as in the example of Figures 1 to 3 ), or by means of screws.
  • the cover 13 can be provided with appendages and/or formations (not shown) for supporting and/or fastening it on an external structure (not shown), to ensure that any fracture of the means of securing to the base 12 does not compromise the operation of the system.
  • the support base 12 comprises a seat 14 having a cavity delimited by a lateral wall 18 and a bottom wall 20.
  • the lateral wall 18 of the seat 14 is formed in one piece with a radial flange 22 having a securing portion 24, provided for fastening the case 11 to an external structure (not shown).
  • the seat 14 is provided with a through-opening 30 which preferably extends partially along the lateral wall 18 and partially along the bottom wall 20.
  • the fan assembly 10 comprises an electric motor 32 housed in the cavity 14 of the case 12.
  • the electric motor 32 has a shaft 34 which is integral with the rotor (not shown) of the motor, and which protrudes through the opening 13a of the cover 13 and bears a centrifugal fan 38 at one of its ends.
  • the casing of the electric motor 32 comprises a coupling end section 32a, through which the shaft 34 protrudes, an intermediate frame section 32b, and a section 32c located opposite the coupling end.
  • an electrical connector 42 On the section 32c opposite the coupling end, there is arranged an electrical connector 42, adapted to interact with a complementary connector (not shown) connected to an electrical power supply cable.
  • the electrical connector 42 extends with clearance through the through-opening of the seat 14.
  • a sealing sheath 46 having a flange portion 48 which bears along the edge of the through-opening 30, on the inner side thereof, thus forming a seal to prevent the outflow of air through the space between the outer surface of the connector 42 and the edge of the opening 30.
  • first and second elastic insulation means 52, 54 engage with corresponding bearing or shoulder surfaces which are normally present on the casing of an electric motor. These surfaces can be located on the coupling end section 32a, on the intermediate frame section 32b, and/or on the section 32c opposite the coupling end.
  • Figures 7 and 8 show an electric motor 32 in which possible areas of engagement for the elastic insulation means 52, 54 are indicated by horizontal and vertical arrows. The dark vertical arrows represent the axial locking action, while the light horizontal arrows represent the radial centring action.
  • Figure 7 shows an area of engagement on the section 32c opposite the coupling end and on the corresponding electrical connector 42, and, on the opposite end, an area of engagement on the coupling end section 32a.
  • Figure 8 shows areas of engagement on the opposite ends of the intermediate frame portion 32b.
  • the actual areas of engagement may be formed by a combination of the locations illustrated above, or other locations which may be present on the electric motor casing, depending on constructional requirements.
  • Figure 5 shows an exemplary embodiment in which the first elastic insulation means 52 are interposed between the bottom 20 of the seat 14 and the section 32c opposite the coupling end of the electric motor 32, while the second elastic insulation means 54 are interposed between the cover 13 and the coupling end section of the intermediate frame section 32b of the electric motor.
  • Figure 6 shows another exemplary embodiment in which the first elastic insulation means 52 are interposed between the bottom 20 of the seat 14 and the end of the intermediate frame section 32b of the electric motor 32 opposite the coupling end, while the second elastic insulation means 54 are interposed between the cover 13, on the one hand, and the coupling end section 32a and the coupling end of the intermediate frame section 32b of the electric motor, on the other hand.
  • the first and second elastic insulation means 52, 54 are made of elastic material, such as thermoplastic rubber, in order to prevent the displacement of the electric motor and keep it in its correct position, while also preventing the transmission of vibrations to the case 11. In this way the acoustic and vibration performance of the fan assembly are improved.
  • Each of the first and second elastic insulation means 52, 54 can be formed by a single element, for example a ring- or cap-shaped element. If present, the sealing sheath 46 of the electrical connector 42 can be made in one piece with the first elastic insulation means 52, as in the example shown in Figure 5 . Alternatively, each of the first and second elastic insulation means 52, 54 can be formed by a plurality of separate elements arranged circumferentially in corresponding seats on the bottom of the seat 14 and on the cover 13.
  • the first and second elastic insulation means 52, 54 can be formed by elements which are produced separately and are subsequently mounted on the bottom of the seat 14 and on the cover 13.
  • the first and second elastic insulation means 52, 54 can be formed by overmoulding an elastomeric material on the plastic material forming the support base 12 and the cover 13.
  • the first and second elastic insulation means 52, 54 can also be shaped, or provided with reference formations, so as to allow them to be correctly angularly positioned with respect to the bottom of the seat 14 and the cover 13 during assembly, and/or to allow the electric motor to be correctly angularly positioned with respect to them.
  • the first and second elastic insulation means 52, 54 enable the separation between the motor and fan assembly and the casing 11 to be maintained in order to prevent the transmission of vibrations originating from the motor and fan assembly to the case and to the parts connected thereto, with the aim of reducing the noise generated by the fan assembly.
  • These elements can also be used to secure the motor axially to the case without using additional securing elements, while maintaining an elastic connection which does not transmit vibrations.
  • the sealing sheath 46 allows mechanical decoupling to be provided between the case and the connector, in such a way that the connector is free to move together with the motor to which it is secured, without interfering with the case and without transmitting vibrations to the case.
EP12157664A 2011-03-02 2012-03-01 Elastisches Isoliersystem für einen Elektromotor zum Reduzieren der Schwingungsübertragung Withdrawn EP2495446A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000188A ITTO20110188A1 (it) 2011-03-02 2011-03-02 Sistema di isolamento elastico di un motore elettrico per ridurre la trasmissione di vibrazioni

Publications (1)

Publication Number Publication Date
EP2495446A1 true EP2495446A1 (de) 2012-09-05

Family

ID=43977425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12157664A Withdrawn EP2495446A1 (de) 2011-03-02 2012-03-01 Elastisches Isoliersystem für einen Elektromotor zum Reduzieren der Schwingungsübertragung

Country Status (6)

Country Link
EP (1) EP2495446A1 (de)
CN (1) CN102734230A (de)
BR (1) BR102012004656A2 (de)
IT (1) ITTO20110188A1 (de)
MA (1) MA33718B1 (de)
RU (1) RU2012107866A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015014505A1 (de) * 2013-08-02 2015-02-05 Ebm-Papst Landshut Gmbh Radialgebläse in kompakter bauweise
WO2019063776A1 (fr) * 2017-09-29 2019-04-04 Valeo Termico, S.A. Ensemble support moteur pour unite de chauffage, ventilation et/ou climatisation (hvac) et groupe moto-ventilateur
DE102018101761A1 (de) 2018-01-26 2019-08-01 Denso Automotive Deutschland Gmbh Gehäuseanordnung für einen Gebläsemotor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134657B (zh) * 2015-09-11 2020-09-29 珠海格力电器股份有限公司 一种单进风的蜗壳结构
CN106762755A (zh) * 2017-02-20 2017-05-31 卢碧莲 智能空气处理装置
CN109546797A (zh) * 2019-01-25 2019-03-29 孙新年 一种马达降噪结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4438751A1 (de) * 1994-10-29 1996-05-02 Pierburg Gmbh Elektrisch angetriebene Luftpumpe
US5786647A (en) * 1993-03-04 1998-07-28 Robert Bosch Gmbh Device for incorporating a motor
EP0909006A2 (de) * 1997-10-08 1999-04-14 Siemens Canada Limited Befestigungsflansch für einen besonders geräuscharmen elektrischen Motor
EP1516756A1 (de) 2003-09-19 2005-03-23 DENSO THERMAL SYSTEMS S.p.A. Gebläseanordnung für die Lüftungseinrichtung eines Fahrzeugs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786647A (en) * 1993-03-04 1998-07-28 Robert Bosch Gmbh Device for incorporating a motor
DE4438751A1 (de) * 1994-10-29 1996-05-02 Pierburg Gmbh Elektrisch angetriebene Luftpumpe
EP0909006A2 (de) * 1997-10-08 1999-04-14 Siemens Canada Limited Befestigungsflansch für einen besonders geräuscharmen elektrischen Motor
EP1516756A1 (de) 2003-09-19 2005-03-23 DENSO THERMAL SYSTEMS S.p.A. Gebläseanordnung für die Lüftungseinrichtung eines Fahrzeugs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015014505A1 (de) * 2013-08-02 2015-02-05 Ebm-Papst Landshut Gmbh Radialgebläse in kompakter bauweise
WO2019063776A1 (fr) * 2017-09-29 2019-04-04 Valeo Termico, S.A. Ensemble support moteur pour unite de chauffage, ventilation et/ou climatisation (hvac) et groupe moto-ventilateur
DE102018101761A1 (de) 2018-01-26 2019-08-01 Denso Automotive Deutschland Gmbh Gehäuseanordnung für einen Gebläsemotor
US11515751B2 (en) 2018-01-26 2022-11-29 Denso Automotive Deutschland Gmbh Housing arrangement for a blower motor

Also Published As

Publication number Publication date
MA33718B1 (fr) 2012-11-01
ITTO20110188A1 (it) 2012-09-03
RU2012107866A (ru) 2013-09-10
CN102734230A (zh) 2012-10-17
BR102012004656A2 (pt) 2013-11-26

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