DE50105660D1 - Centrifugal fan and nozzle for a centrifugal fan - Google Patents
Centrifugal fan and nozzle for a centrifugal fanInfo
- Publication number
- DE50105660D1 DE50105660D1 DE50105660T DE50105660T DE50105660D1 DE 50105660 D1 DE50105660 D1 DE 50105660D1 DE 50105660 T DE50105660 T DE 50105660T DE 50105660 T DE50105660 T DE 50105660T DE 50105660 D1 DE50105660 D1 DE 50105660D1
- Authority
- DE
- Germany
- Prior art keywords
- nozzle
- centrifugal fan
- air flow
- inlet
- fan
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Nozzles (AREA)
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50105660T DE50105660D1 (en) | 2000-02-01 | 2001-01-11 | Centrifugal fan and nozzle for a centrifugal fan |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20001746U DE20001746U1 (en) | 2000-02-01 | 2000-02-01 | Radial fan and nozzle for a radial fan |
DE50105660T DE50105660D1 (en) | 2000-02-01 | 2001-01-11 | Centrifugal fan and nozzle for a centrifugal fan |
Publications (1)
Publication Number | Publication Date |
---|---|
DE50105660D1 true DE50105660D1 (en) | 2005-04-28 |
Family
ID=7936693
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20001746U Expired - Lifetime DE20001746U1 (en) | 2000-02-01 | 2000-02-01 | Radial fan and nozzle for a radial fan |
DE50105660T Expired - Lifetime DE50105660D1 (en) | 2000-02-01 | 2001-01-11 | Centrifugal fan and nozzle for a centrifugal fan |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20001746U Expired - Lifetime DE20001746U1 (en) | 2000-02-01 | 2000-02-01 | 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)
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)
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 |
-
2000
- 2000-02-01 DE DE20001746U patent/DE20001746U1/en not_active Expired - Lifetime
-
2001
- 2001-01-11 AT AT01100089T patent/ATE291698T1/en not_active IP Right Cessation
- 2001-01-11 DE DE50105660T patent/DE50105660D1/en not_active Expired - Lifetime
- 2001-01-11 EP EP01100089A patent/EP1122444B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1122444A2 (en) | 2001-08-08 |
DE20001746U1 (en) | 2001-06-21 |
EP1122444B1 (en) | 2005-03-23 |
ATE291698T1 (en) | 2005-04-15 |
EP1122444A3 (en) | 2003-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |