EP1070851A2 - Soufflante - Google Patents

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Publication number
EP1070851A2
EP1070851A2 EP00115430A EP00115430A EP1070851A2 EP 1070851 A2 EP1070851 A2 EP 1070851A2 EP 00115430 A EP00115430 A EP 00115430A EP 00115430 A EP00115430 A EP 00115430A EP 1070851 A2 EP1070851 A2 EP 1070851A2
Authority
EP
European Patent Office
Prior art keywords
damping
blower housing
blower
sound
box
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
EP00115430A
Other languages
German (de)
English (en)
Other versions
EP1070851A3 (fr
EP1070851B1 (fr
Inventor
Andreas Dr. Eilemann
Jörg Dipl.-Ing. Kilian
Franz Veitl
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.)
Bayerische Motoren Werke AG
Mahle Behr GmbH and Co KG
Original Assignee
Bayerische Motoren Werke AG
Behr GmbH and Co KG
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 Bayerische Motoren Werke AG, Behr GmbH and Co KG filed Critical Bayerische Motoren Werke AG
Publication of EP1070851A2 publication Critical patent/EP1070851A2/fr
Publication of EP1070851A3 publication Critical patent/EP1070851A3/fr
Application granted granted Critical
Publication of EP1070851B1 publication Critical patent/EP1070851B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • 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
    • F04D29/665—Sound attenuation by means of resonance chambers or interference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a blower, in particular for ventilation the passenger compartment of a motor vehicle with the in The preamble of claim 1 mentioned features.
  • the impeller rotating in such fans produces when conveying an airflow noises whose Sound energy at least partially together with the funded Airflow through a ventilation duct into the passenger compartment reaches and there to an undesirably high noise level leads.
  • DE 36 39 138 A1 discloses a sound-absorbing fan housing known with wall areas made of a foam-coated Support frames exist.
  • the foam has it a sound-absorbing and the supporting structure a load-bearing one Function.
  • a certain thickness of the foam is required, for which there is not always sufficient installation space is.
  • EP 0 412 454 B1 shows a housing of a single-flow radial fan with a sound-absorbing effect. This is about one Blower wheel arranged a spiral housing, which consists of a hard, porous and multi-layer material. A Layer of this material has a thickness direction and also variable with the surface direction specific weight. This is supposed to be the sound insulation properties adapted to local conditions and overall be improved to save space. The manufacture of a such a housing requires a high level of technology.
  • the invention has for its object a generic To create blowers that reduce noise emissions is.
  • the invention is based on the idea of an impeller generated sound waves several times by one Damping surface made of sound-absorbing material to lead. Every time the sound waves pass through it Part of the sound energy is dissipated, which is why the damping area compared to known ones sound-absorbing surfaces thin and simple can be. This is a noise-reduced fan created that is simple and low Has construction volume.
  • This idea is implemented by using a blower housing Damping surface made of a damping sound-permeable Has material and the blower housing in turn from one made of a sound reflecting material Reflection box enclosed in the area of the damping surface becomes.
  • the reflection box forms with the blower housing and the damping surface has a resonance space.
  • the ones from Blower wheel generated sound waves propagate through the Damping surface in the resonance room, where it Passed through the damping surface for the first time become. After passing through the resonance room, they are from reflected on the wall and hit the wall a second time Damping surface. When passing through the Damping surface, this time back to the fan wheel, the Sound waves dampened one more time, causing the Sound level reaches the desired low level.
  • the Reflection boxes do not need any additional components be, because in many known fan designs, by the function of the fan requires a suitable box is available. Especially with double-flow radial fans
  • the blower housing is with two separate inlet openings in the form of a volute from an overflow box to Air is supplied to both inlet openings.
  • the existing overflow box can be used without additional effort and space requirements Reflection box be formed.
  • the damping surface is in simply formed by a supporting lattice structure, which is covered with a damping membrane, whereby the wall thickness can be kept very low.
  • the damping surface and in particular the entire blower housing made of foamed Plastic formed, what with manufacturing technology can be realized with little effort.
  • This training allowed also in a simple way, one to protect the Inlet grille provided by foaming to be attached to the blower housing.
  • a blower housing 1 shows a radial fan with an axis 13 rotatable radial impeller 3 to promote Air.
  • a blower housing 1 the wall areas of which Fan coil 10, encloses the impeller 3 so that an outflow opening 12 remains on the circumference.
  • the Inlet opening 9 is covered with an inlet grille 8.
  • the blower housing can be one or more separate on the Damping surfaces 2 arranged on the circumferential side or on the Have damping surfaces 2 'arranged on the end face.
  • the exemplary embodiment shown is the entire blower housing 1 as a coherent damping surface 2, 2 ' formed in which the blower housing 1 from a damping sound-permeable material, and especially foamed Plastic is formed.
  • the reflection box 4 is as an overflow box 11 with a substantially square Floor plan designed and encloses the blower housing 1 partially in the area of the damping surfaces 2, 2 '.
  • a corner of the overflow box 11 is in the area of Outflow opening 12 arranged; in the remaining three corners forms the overflow box 11 together with the blower housing 1 and the damping surfaces 2 each have a circumferential side Resonance room 5.
  • the reflection box 4 consists of sound reflecting material, preferably made of injection molded plastic.
  • the inlet grille 8 covers the Inlet opening 9 and can with the blower housing 1 through Gluing, welding, screwing or by means of Snap connectors to be connected.
  • the inlet grille 8 in the edge region 14 of the Inlet opening 9 into the material of the blower housing 1 foamed.
  • the reflection box 4 in Area of the resonance room 5 additionally sound-absorbing material.
  • the blower according to the invention can be a single-flow blower his.
  • the blower housing 1 can then be double-walled be, the second wall soundproofing properties may have.
  • To reinforce noise reduction is a space between in the double-walled version the walls required. From that shown in Fig. 2 View of the embodiment of FIG. 1 is clear that this is a double-flow radial fan each with an inlet opening 9 on the two end faces of the blower housing 1.
  • the blower housing 1 is one Overflow box 11 so enclosed that both Inlet openings 9 together through the suction openings 15 be supplied with fresh air. The fresh air flow serves also for cooling the dashed line Blower motor 16.
  • the Overflow box 11 also in the area of the two end faces of the blower housing 1 a reflection box 4, which in turn together with the blower housing 1 and its damping surfaces 2 'on the end face each Room 5 'forms.
  • the two front spaces 5 ' are in Embodiment shown over the three in Fig. 1st illustrated circumferential spaces 5 to one another connected resonance room 5, 5 'connected.
  • the blower housing 1 can also on its circumference or Have one or more damping surfaces 2 on the end faces, each of a support grid 7 and a support grid 7 covering damping membrane 6 exist.
  • damping surfaces designed in this way 2 arranged on the circumference of the blower housing 1.
  • the blower shown corresponds to the embodiment 1 and 2, so that the damping surfaces 2 together with the blower housing 1 and as a reflection box 4 executed overflow box 11 in three its corners each form a circumferential resonance chamber 5.
  • section IV-IV of FIG. 3 shown in FIG. 4 shown that the of a damping membrane 6 and a Support grid 7 existing damping surfaces 2 in the circumferential direction 7 are extended so far that they interlock pass over and form a single damping surface 2.
  • the fan is designed with two flow channels Inlet opening 9 on the two end faces of the Blower housing 1.
  • the blower housing 1 is from an overflow box 11 enclosed, which also forms the reflection box 4.
  • the Reflection box 4 forms together with the blower housing 1 and the damping surface 2 a coherent Resonance room 5, 5 ', which consists of two ends of the Blower housing 1 arranged spaces 5 'as well as in FIG. 3 consists of three circumferential rooms 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP00115430A 1999-07-23 2000-07-18 Soufflante Expired - Lifetime EP1070851B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934586 1999-07-23
DE19934586A DE19934586A1 (de) 1999-07-23 1999-07-23 Gebläse

Publications (3)

Publication Number Publication Date
EP1070851A2 true EP1070851A2 (fr) 2001-01-24
EP1070851A3 EP1070851A3 (fr) 2002-04-17
EP1070851B1 EP1070851B1 (fr) 2006-07-12

Family

ID=7915810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00115430A Expired - Lifetime EP1070851B1 (fr) 1999-07-23 2000-07-18 Soufflante

Country Status (2)

Country Link
EP (1) EP1070851B1 (fr)
DE (2) DE19934586A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062184B4 (de) * 2005-01-11 2016-12-15 Yamabiko Corporation Gebläseventilator und mit diesem ausgestattete Arbeitsmaschine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2225398A (en) * 1939-09-13 1940-12-17 Clyde M Hamblin Construction of ventilating fans
GB926088A (en) * 1960-11-08 1963-05-15 Brightside Heating & Engineeri Improvements relating to centrifugal fans
US3312389A (en) * 1964-05-04 1967-04-04 Fukuo Saeki Air blower device with silencer
DE3639138A1 (de) * 1986-11-15 1988-05-19 Sueddeutsche Kuehler Behr Gehaeuse zur fuehrung von luftstroemen
EP0412454A1 (fr) * 1989-08-09 1991-02-13 Mitsubishi Denki Kabushiki Kaisha Ventilateur
US5199846A (en) * 1990-10-22 1993-04-06 Hitachi, Ltd. Centrifugal fan with noise suppressing arrangement
EP0798468A2 (fr) * 1996-03-29 1997-10-01 SANYO ELECTRIC Co., Ltd. Soufflante électrique
DE29611707U1 (de) * 1996-07-05 1997-10-30 AEG Hausgeräte GmbH, 90429 Nürnberg Spiralgehäuse für ein Luftfördergebläse in einem Haushaltsgerät, insbesondere in einem elektrischen Wäschetrockner
EP0837246A2 (fr) * 1996-10-15 1998-04-22 PM-Luft AB Boítier d'un ventilateur pour l'alimentation en air d'un système de ventilation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1403496A1 (de) * 1961-07-01 1969-01-30 Daimler Benz Ag Kuehl- oder Heissluftgeblaese
DE2240104A1 (de) * 1972-08-16 1974-02-28 Buderus Eisenwerk Schaufelgeblaese
FR2457399A1 (fr) * 1979-05-23 1980-12-19 Citroen Sa Silencieux de ventilateur

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2225398A (en) * 1939-09-13 1940-12-17 Clyde M Hamblin Construction of ventilating fans
GB926088A (en) * 1960-11-08 1963-05-15 Brightside Heating & Engineeri Improvements relating to centrifugal fans
US3312389A (en) * 1964-05-04 1967-04-04 Fukuo Saeki Air blower device with silencer
DE3639138A1 (de) * 1986-11-15 1988-05-19 Sueddeutsche Kuehler Behr Gehaeuse zur fuehrung von luftstroemen
EP0412454A1 (fr) * 1989-08-09 1991-02-13 Mitsubishi Denki Kabushiki Kaisha Ventilateur
US5199846A (en) * 1990-10-22 1993-04-06 Hitachi, Ltd. Centrifugal fan with noise suppressing arrangement
EP0798468A2 (fr) * 1996-03-29 1997-10-01 SANYO ELECTRIC Co., Ltd. Soufflante électrique
DE29611707U1 (de) * 1996-07-05 1997-10-30 AEG Hausgeräte GmbH, 90429 Nürnberg Spiralgehäuse für ein Luftfördergebläse in einem Haushaltsgerät, insbesondere in einem elektrischen Wäschetrockner
EP0837246A2 (fr) * 1996-10-15 1998-04-22 PM-Luft AB Boítier d'un ventilateur pour l'alimentation en air d'un système de ventilation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062184B4 (de) * 2005-01-11 2016-12-15 Yamabiko Corporation Gebläseventilator und mit diesem ausgestattete Arbeitsmaschine

Also Published As

Publication number Publication date
EP1070851A3 (fr) 2002-04-17
DE19934586A1 (de) 2001-01-25
EP1070851B1 (fr) 2006-07-12
DE50013145D1 (de) 2006-08-24

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