EP0413987A3 - Axial fan - Google Patents

Axial fan Download PDF

Info

Publication number
EP0413987A3
EP0413987A3 EP19900114295 EP90114295A EP0413987A3 EP 0413987 A3 EP0413987 A3 EP 0413987A3 EP 19900114295 EP19900114295 EP 19900114295 EP 90114295 A EP90114295 A EP 90114295A EP 0413987 A3 EP0413987 A3 EP 0413987A3
Authority
EP
European Patent Office
Prior art keywords
axial fan
impeller
wall
duct
enclosed
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
EP19900114295
Other languages
German (de)
Other versions
EP0413987B1 (en
EP0413987A2 (en
Inventor
Helmut Prof.Dr.Ing. Fuchs
Andreas Dipl-.Ing. Jacobs
Heinz Dipl-.Ing. Wieland
Ulrich. Dr.Rer.Nat. Ackermann
Joachim Dipl.-Ing. Mohr
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.)
Gebhardt Ventilatoren GmbH and Co KG
Original Assignee
Gebhardt Ventilatoren 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 Gebhardt Ventilatoren GmbH and Co KG filed Critical Gebhardt Ventilatoren GmbH and Co KG
Publication of EP0413987A2 publication Critical patent/EP0413987A2/en
Publication of EP0413987A3 publication Critical patent/EP0413987A3/en
Application granted granted Critical
Publication of EP0413987B1 publication Critical patent/EP0413987B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F04D29/547—Ducts having a special shape in order to influence fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Seasonings (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

Axial fan which contains an impeller (6) provided with rotor blades (14), which impeller is arranged in a flow duct (4) enclosed by a wall (1). In or on the wall (1) in the area of the blade tips (15) at least one opening is provided which is equipped on the duct side with a cover (21) having through holes (22). <IMAGE>
EP90114295A 1989-08-23 1990-07-26 Axial fan Expired - Lifetime EP0413987B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3927791 1989-08-23
DE3927791A DE3927791A1 (en) 1989-08-23 1989-08-23 AXIAL FAN

Publications (3)

Publication Number Publication Date
EP0413987A2 EP0413987A2 (en) 1991-02-27
EP0413987A3 true EP0413987A3 (en) 1991-09-25
EP0413987B1 EP0413987B1 (en) 1996-12-27

Family

ID=6387675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114295A Expired - Lifetime EP0413987B1 (en) 1989-08-23 1990-07-26 Axial fan

Country Status (6)

Country Link
EP (1) EP0413987B1 (en)
AT (1) ATE146855T1 (en)
DD (1) DD297208A5 (en)
DE (2) DE3927791A1 (en)
DK (1) DK0413987T3 (en)
ES (1) ES2095226T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3584704B2 (en) * 1997-10-24 2004-11-04 昭和風力機械株式会社 Suction flow pre-swirl control bypass structure for blower
DE102004014876B4 (en) * 2004-03-22 2010-06-10 Mdexx Gmbh Fan shroud, fan with a fan shroud and wind turbine with a fan
DE102006049076B4 (en) * 2006-10-13 2019-09-26 Mahle International Gmbh Axial fan arranged to promote cooling air for a cooling device of a motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1490923A (en) * 1975-06-23 1977-11-02 Short Brothers & Harland Ltd Sound-absorbing structures
DE2548999B2 (en) * 1974-11-05 1978-12-14 Sasakura Engineering Co., Ltd., Osaka (Japan) Fan ring for an axial fan
DE3322295A1 (en) * 1982-07-29 1984-02-02 Doneckij Gosudarstvennyj proektno-konstruktorskij i eksperimental'nyj institut kompleksnoj mechanizacii &scaron;acht, Doneck AXIAL FAN
DE3511769A1 (en) * 1985-03-30 1986-10-02 MAN Gutehoffnungshütte GmbH, 4200 Oberhausen ONE AND MULTI-STAGE AXIAL COMPRESSOR

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318799Y2 (en) * 1980-12-02 1988-05-26

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2548999B2 (en) * 1974-11-05 1978-12-14 Sasakura Engineering Co., Ltd., Osaka (Japan) Fan ring for an axial fan
GB1490923A (en) * 1975-06-23 1977-11-02 Short Brothers & Harland Ltd Sound-absorbing structures
DE3322295A1 (en) * 1982-07-29 1984-02-02 Doneckij Gosudarstvennyj proektno-konstruktorskij i eksperimental'nyj institut kompleksnoj mechanizacii &scaron;acht, Doneck AXIAL FAN
DE3511769A1 (en) * 1985-03-30 1986-10-02 MAN Gutehoffnungshütte GmbH, 4200 Oberhausen ONE AND MULTI-STAGE AXIAL COMPRESSOR

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Ventilatoren", B. ECK, 4. Auflage, 1962, Springer- Verlag Berlin, G!ttingen, Heidelberg "Schallabsorption durch Resonatoren" *

Also Published As

Publication number Publication date
ES2095226T3 (en) 1997-02-16
DD297208A5 (en) 1992-01-02
ATE146855T1 (en) 1997-01-15
EP0413987B1 (en) 1996-12-27
DE3927791A1 (en) 1991-02-28
DE59010616D1 (en) 1997-02-06
DK0413987T3 (en) 1997-06-09
EP0413987A2 (en) 1991-02-27

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