EP1306559B1 - Ventilation assembly for vehicles - Google Patents

Ventilation assembly for vehicles Download PDF

Info

Publication number
EP1306559B1
EP1306559B1 EP20020010978 EP02010978A EP1306559B1 EP 1306559 B1 EP1306559 B1 EP 1306559B1 EP 20020010978 EP20020010978 EP 20020010978 EP 02010978 A EP02010978 A EP 02010978A EP 1306559 B1 EP1306559 B1 EP 1306559B1
Authority
EP
European Patent Office
Prior art keywords
sheet
gap
sound
absorbing material
ventilation assembly
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
EP20020010978
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1306559A1 (en
Inventor
Adelio Aimone
Giovanni Tortorelli
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 EP1306559A1 publication Critical patent/EP1306559A1/en
Application granted granted Critical
Publication of EP1306559B1 publication Critical patent/EP1306559B1/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
    • 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
    • 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
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material

Definitions

  • the present invention relates to a ventilation assembly for vehicles, comprising a shell or casing forming a duct having an intake section and an outlet section for the flow of air and a fan set in a seat of the shell between the intake section and the outlet section.
  • the electric motor for operating the fan is carried by a supporting element fixed to the shell of the ventilation assembly, the said supporting element having a projecting portion basically tubular in shape, within which the motor is housed.
  • the problem underlying the present invention is that of noise of ventilation assemblies. Automobile manufacturers impose increasingly stringent limits on allowable noise levels, and traditional solutions are unable to respect such limits.
  • EP0372718 discloses a ventilation assembly according to the precharacterizing portion of claim 1, comprising a high-speed electric motor sealed within a noise-attenuating cover.
  • the motor is surrounded by an aluminium cover and by a polypropylene shell. Foam pads are sandwiched between the cover and the shell.
  • the purpose of the present invention is to provide a simple and inexpensive solution that will enable reduction of noise of a ventilation assembly of the type defined above.
  • the ventilation assembly 10 comprises a shell or casing 12 made of plastic material defining a duct for passage of a flow of air.
  • the shell 12 has an intake section 14, an outlet section 16, and a seat 18 for a centrifugal fan.
  • the ventilation assembly comprises a supporting element 20 made of plastic material, which carries an electric motor 22, a variable speed drive 24 and a centrifugal fan 26 mounted on the shaft of the motor 22.
  • the supporting element 20 has a wall 28, from which there extends an integral projecting portion 30 with a basically tubular shape forming within it a seat, inside which the motor 22 is housed.
  • the supporting element 20 is fixed to the part of the shell 12 forming the seat 18 for the centrifugal fan.
  • the projecting portion within which the motor is housed projects from the shell in a direction substantially parallel to the axis of the circular seat 18, inside which the fan is housed.
  • FIG. 3 illustrates the development in a plane of the sheet 32. This sheet is cut according to a given profile in such a way that it is able to cover the entire outer surface of the projecting portion 30.
  • An covering element 34 is fixed to the supporting element 20 and is set in such a way as to surround the sheet of sound-deadening material 32.
  • the covering element 34 forms a gap with a substantially constant thickness around a side wall 36 and a base wall 38 of the projecting portion 30. The said gap is filled with the sheet of sound-deadening material 32.
  • the gap surrounding the projecting portion 30 has a thickness of approximately 5 mm, whilst the thickness of the sheet of sound-absorbing material 32 is approximately twice the thickness of the gap, so that said sheet is compressed in the gap.
  • the sheet 32 is preferably made up of a plurality of thin layers of non-woven material joined together and consisting of polypropylene and polyester fibres. A material that is commercially available and that provides an excellent result as regards the properties of acoustic attenuation is produced by the company 3M and marketed under the brand name Thinsulate. As an alternative to this product, it is possible to use flexible sheets of non-woven fabric with various compositions of fibres, either stratified or formed by a single layer.
  • the covering element 40 completely surrounds the projecting portion within which the motor is housed.
  • Experimental tests conducted by the present applicant have demonstrated that the housing of the motor is the place in which most of the noise is generated in a ventilation assembly.
  • the assembly according to the present invention enables selective acoustic insulation of the noisiest area.
  • the assembly according to the present invention can be applied to currently existing ventilation assemblies without substantial modifications of the moulds in so far as it envisages simply the addition of the covering element 34 and of the sound-absorbing material 32, without requiring any substantial modifications to the supporting element 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP20020010978 2001-10-24 2002-05-16 Ventilation assembly for vehicles Expired - Lifetime EP1306559B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20011015 2001-10-24
ITTO20011015 ITTO20011015A1 (it) 2001-10-24 2001-10-24 ,,gruppo di ventilazione per veicoli,,

Publications (2)

Publication Number Publication Date
EP1306559A1 EP1306559A1 (en) 2003-05-02
EP1306559B1 true EP1306559B1 (en) 2005-12-28

Family

ID=11459275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020010978 Expired - Lifetime EP1306559B1 (en) 2001-10-24 2002-05-16 Ventilation assembly for vehicles

Country Status (7)

Country Link
EP (1) EP1306559B1 (it)
AR (1) AR034823A1 (it)
BR (1) BR0202769A (it)
DE (1) DE60208300T2 (it)
ES (1) ES2252352T3 (it)
IT (1) ITTO20011015A1 (it)
PL (1) PL355122A1 (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012020683A1 (de) * 2012-10-22 2014-04-24 Volkswagen Aktiengesellschaft Anordnung zur Vermeidung von Schallimmission in den Innenraum eines Fahrzeugs und Fahrzeug mit einer solchen Anordnung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272985A (en) * 1939-10-14 1942-02-10 Spencer Turbine Co Motor mounting for vacuum cleaners
US4893995A (en) * 1988-12-05 1990-01-16 General Motors Corporation Electric motor-driven impeller-type air pump
US5049770A (en) * 1990-03-26 1991-09-17 General Motors Corporation Electric motor-driven impeller-type air pump
US5567127A (en) * 1994-11-09 1996-10-22 Wentz; Kennith W. Low noise air blower
DE19755172A1 (de) * 1997-12-11 1999-06-17 Bosch Siemens Hausgeraete Gebläseaggregat

Also Published As

Publication number Publication date
BR0202769A (pt) 2003-09-09
PL355122A1 (en) 2003-05-05
DE60208300D1 (de) 2006-02-02
AR034823A1 (es) 2004-03-17
DE60208300T2 (de) 2006-07-06
ITTO20011015A1 (it) 2003-04-24
ES2252352T3 (es) 2006-05-16
EP1306559A1 (en) 2003-05-02

Similar Documents

Publication Publication Date Title
JP2846167B2 (ja) 遠心送風機，自動車用空気調和装置の送風機及び遠心送風機を備えた自動車用空気調和装置
US5199846A (en) Centrifugal fan with noise suppressing arrangement
EP2172655B1 (en) Dual reversal-rotating type axial blower
US6554101B2 (en) Structure and method of absorbing and shielding sound
JPH09156345A (ja) 車両用空調装置
JP2008248866A (ja) 防音カバー
CA2684663A1 (en) Recessed fan inlet cover
EP1306559B1 (en) Ventilation assembly for vehicles
JP2000027798A (ja) 送風装置
JPH10318198A (ja) 電動送風機
JP3638355B2 (ja) 空気調和機の室外機
JP4876586B2 (ja) 天井埋込型換気扇
KR20240040220A (ko) 스피커가 장착된 자동차용 헤드 라이너
KR101580917B1 (ko) 전동 압축기의 제진장치
JP2503215B2 (ja) 自動車用空気調和装置
KR940000902Y1 (ko) 덕트용 환기팬
JPS6233965B2 (it)
JP4057247B2 (ja) 防音カバーの取付構造
JPS6325438Y2 (it)
JP2004175200A (ja) エンジンアンダーカバー及びエンジンカバー
JPH0612442Y2 (ja) 空気調和機
JPS61277900A (ja) 送風機
JP2006096092A (ja) 空気通路切替装置
CN216716538U (zh) 导风板及落地式空调器
ES2305370T3 (es) Soplante accionado por motor electrico.

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

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

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030911

AKX Designation fees paid

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

17Q First examination report despatched

Effective date: 20040923

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051228

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60208300

Country of ref document: DE

Date of ref document: 20060202

Kind code of ref document: P

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060328

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060328

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

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

Ref country code: IE

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

Effective date: 20060516

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2252352

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060529

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

Ref country code: MC

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

Effective date: 20060531

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

ET Fr: translation filed
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

26N No opposition filed

Effective date: 20060929

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: LU

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

Effective date: 20060516

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

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

Ref country code: GB

Payment date: 20100519

Year of fee payment: 9

Ref country code: SE

Payment date: 20100528

Year of fee payment: 9

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

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

Effective date: 20110516

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: 20110516

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

Ref country code: ES

Payment date: 20120518

Year of fee payment: 11

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

Ref country code: SE

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

Effective date: 20110517

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

Ref country code: FR

Payment date: 20130620

Year of fee payment: 12

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

Ref country code: DE

Payment date: 20130731

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R231

Ref document number: 60208300

Country of ref document: DE

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 THE APPLICANT RENOUNCES

Effective date: 20140522

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150130

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: 20140602

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150629

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

Ref country code: ES

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

Effective date: 20140517