EP1122444A3 - Radial fan and nozzle for a radial fan - Google Patents

Radial fan and nozzle for a radial fan Download PDF

Info

Publication number
EP1122444A3
EP1122444A3 EP01100089A EP01100089A EP1122444A3 EP 1122444 A3 EP1122444 A3 EP 1122444A3 EP 01100089 A EP01100089 A EP 01100089A EP 01100089 A EP01100089 A EP 01100089A EP 1122444 A3 EP1122444 A3 EP 1122444A3
Authority
EP
European Patent Office
Prior art keywords
nozzle
air flow
fan
radial fan
inlet
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
EP01100089A
Other languages
German (de)
French (fr)
Other versions
EP1122444A2 (en
EP1122444B1 (en
Inventor
Oliver Dipl.-Ing. Haaf
Wolfgang Hafen
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.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Werke 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 Ebm Werke GmbH and Co KG filed Critical Ebm Werke GmbH and Co KG
Publication of EP1122444A2 publication Critical patent/EP1122444A2/en
Publication of EP1122444A3 publication Critical patent/EP1122444A3/en
Application granted granted Critical
Publication of EP1122444B1 publication Critical patent/EP1122444B1/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
    • F04D29/42—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
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers 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
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection

Abstract

The radial ventilator fan has a funnel shaped air inlet nozzle (1) for the entry of axial primary air flow (P) fed to a free blowing fan rotor (2) for radial discharge. The wall of the nozzle has a frusto-conical inflow section (3a) leading to a cylindrical central flow duct (4) on the suction side of the fan. A gap (5) for secondary air inflow is provided between the rotor and the inlet duct wall. An annular formation (6) is provided in the inlet so that the nozzle forms a boundary layer of the primary air flow causing an air flow mixing.
EP01100089A 2000-02-01 2001-01-11 Radial fan and nozzle for a radial fan Expired - Lifetime EP1122444B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20001746U 2000-02-01
DE20001746U DE20001746U1 (en) 2000-02-01 2000-02-01 Radial fan and nozzle for a radial fan

Publications (3)

Publication Number Publication Date
EP1122444A2 EP1122444A2 (en) 2001-08-08
EP1122444A3 true EP1122444A3 (en) 2003-02-05
EP1122444B1 EP1122444B1 (en) 2005-03-23

Family

ID=7936693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01100089A Expired - Lifetime EP1122444B1 (en) 2000-02-01 2001-01-11 Radial fan and nozzle for a radial fan

Country Status (3)

Country Link
EP (1) EP1122444B1 (en)
AT (1) ATE291698T1 (en)
DE (2) DE20001746U1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1479917A1 (en) * 2003-05-22 2004-11-24 Nidec Shibaura Corporation Fan
DE102004055023B4 (en) * 2004-11-15 2015-06-25 Siemens Aktiengesellschaft Coolant feed wheel with injector suction nozzle
RU2429386C2 (en) * 2007-09-26 2011-09-20 Вячеслав Георгиевич Караджи Fan unit with free radial wheel rotor
DE102012021372B4 (en) 2012-10-25 2023-05-04 Ziehl-Abegg Se Inlet nozzle for centrifugal fans and centrifugal fans
DE102015207948A1 (en) 2015-04-29 2016-11-03 Ziehl-Abegg Se Inlet nozzle for a radial, diagonal or axial fan and radial, diagonal or axial fan with an inlet nozzle
DE202016105522U1 (en) 2016-10-05 2016-10-26 Ebm-Papst Mulfingen Gmbh & Co. Kg Inlet nozzle for a centrifugal fan
DE102016118856A1 (en) * 2016-10-05 2018-04-05 Ebm-Papst Mulfingen Gmbh & Co. Kg Inlet nozzle for a centrifugal fan

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276858B (en) * 1957-03-12 1968-09-05 Paul Pollrich & Comp Centrifugal fan or pump
DE3304963A1 (en) * 1983-02-12 1984-08-16 Hans Joachim 7440 Nürtingen Leithner Radial fan for ventilation installations
US5547339A (en) * 1995-04-11 1996-08-20 Comair Rotron, Inc. Turbulator for a fluid impelling device
US5551838A (en) * 1992-10-01 1996-09-03 Abb Flakt Ab Inlet bell for centrifugal fans
FR2772437A1 (en) * 1997-12-11 1999-06-18 Valeo Climatisation Air fan for air conditioning system of vehicle,

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1403081A1 (en) 1958-07-12 1968-10-03 Pollrich Paul & Co Impeller for radial fan or pump
DE2940773C2 (en) 1979-10-08 1986-08-14 Punker GmbH, 2330 Eckernförde High-performance centrifugal fan
JP3794098B2 (en) 1997-01-31 2006-07-05 株式会社デンソー Centrifugal blower
JP3921832B2 (en) 1998-02-02 2007-05-30 株式会社デンソー Centrifugal blower

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276858B (en) * 1957-03-12 1968-09-05 Paul Pollrich & Comp Centrifugal fan or pump
DE3304963A1 (en) * 1983-02-12 1984-08-16 Hans Joachim 7440 Nürtingen Leithner Radial fan for ventilation installations
US5551838A (en) * 1992-10-01 1996-09-03 Abb Flakt Ab Inlet bell for centrifugal fans
US5547339A (en) * 1995-04-11 1996-08-20 Comair Rotron, Inc. Turbulator for a fluid impelling device
FR2772437A1 (en) * 1997-12-11 1999-06-18 Valeo Climatisation Air fan for air conditioning system of vehicle,

Also Published As

Publication number Publication date
DE20001746U1 (en) 2001-06-21
EP1122444A2 (en) 2001-08-08
ATE291698T1 (en) 2005-04-15
DE50105660D1 (en) 2005-04-28
EP1122444B1 (en) 2005-03-23

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