ATE291698T1 - CENTRAL FAN AND NOZZLE FOR A CENTRAL FAN - Google Patents

CENTRAL FAN AND NOZZLE FOR A CENTRAL FAN

Info

Publication number
ATE291698T1
ATE291698T1 AT01100089T AT01100089T ATE291698T1 AT E291698 T1 ATE291698 T1 AT E291698T1 AT 01100089 T AT01100089 T AT 01100089T AT 01100089 T AT01100089 T AT 01100089T AT E291698 T1 ATE291698 T1 AT E291698T1
Authority
AT
Austria
Prior art keywords
nozzle
fan
air flow
inlet
central fan
Prior art date
Application number
AT01100089T
Other languages
German (de)
Inventor
Oliver Dipl-Ing Haaf
Wolfgang Hafen
Original Assignee
Ebm Papst Mulfingen Gmbh & Co
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 Papst Mulfingen Gmbh & Co filed Critical Ebm Papst Mulfingen Gmbh & Co
Application granted granted Critical
Publication of ATE291698T1 publication Critical patent/ATE291698T1/en

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.
AT01100089T 2000-02-01 2001-01-11 CENTRAL FAN AND NOZZLE FOR A CENTRAL FAN ATE291698T1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ATE291698T1 true ATE291698T1 (en) 2005-04-15

Family

ID=7936693

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01100089T ATE291698T1 (en) 2000-02-01 2001-01-11 CENTRAL FAN AND NOZZLE FOR A CENTRAL 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
WO2009041844A1 (en) * 2007-09-26 2009-04-02 Balakirev, Evgeny Borisovitch Fan unit with a free radial fan impeller
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

Family Cites Families (9)

* 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
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
DE3304963A1 (en) * 1983-02-12 1984-08-16 Hans Joachim 7440 Nürtingen Leithner Radial fan for ventilation installations
SE515524C2 (en) 1992-10-01 2001-08-20 Flaekt Ab Centrifugal fan inlet clock
US5547339A (en) * 1995-04-11 1996-08-20 Comair Rotron, Inc. Turbulator for a fluid impelling device
JP3794098B2 (en) 1997-01-31 2006-07-05 株式会社デンソー Centrifugal blower
FR2772437B1 (en) * 1997-12-11 2000-02-25 Valeo Climatisation MOTOR-FAN GROUP, PARTICULARLY FOR MOTOR VEHICLE HEATING AND AIR-CONDITIONING INSTALLATION
JP3921832B2 (en) 1998-02-02 2007-05-30 株式会社デンソー Centrifugal blower

Also Published As

Publication number Publication date
EP1122444A2 (en) 2001-08-08
EP1122444B1 (en) 2005-03-23
DE20001746U1 (en) 2001-06-21
EP1122444A3 (en) 2003-02-05
DE50105660D1 (en) 2005-04-28

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee