DE2322734A1 - FAN - Google Patents
FANInfo
- Publication number
- DE2322734A1 DE2322734A1 DE19732322734 DE2322734A DE2322734A1 DE 2322734 A1 DE2322734 A1 DE 2322734A1 DE 19732322734 DE19732322734 DE 19732322734 DE 2322734 A DE2322734 A DE 2322734A DE 2322734 A1 DE2322734 A1 DE 2322734A1
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- conveyor blades
- fan
- blower
- drum
- 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.)
- Pending
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
-
- 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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
3UDERUS1SCHe EISEIWERKE
TP/P/Z/PG I9-IO73UDERUS 1 SCHE EISEIWERKE
TP / P / Z / PG I9-IO7
Gebläsefan
Beim Betrieb von Gebläsen treten oft unangenehme Geräusche auf. Dieses Problem ist besonders bei Gebläsen vorhanden, die auf dem Mantel eines trommeiförmigen Rotors eine verhältnismäßig geringe Anzahl von parallel zur Rotorachse verlaufenden Förderschaufeln besitzen. In den zwischen den Förderschaufeln liegenden großen Lufträumen entstehen dabei Lufteigenschwingungen, die zu der Geräuschbildung führen. Eine besondere Intensität der Geräusche wird noch dadurch hervorgerufen, daß die Förderschaufeln schlagartig in den Luftstrom, beispielsweise beim Passieren einer feststehenden Gehäusekante, eingreifen.There are often unpleasant noises when operating fans. This problem is particularly present with fans that on the shell of a drum-shaped rotor a relatively small number of parallel to the rotor axis Own conveyor blades. In the large air spaces between the conveyor blades, natural air oscillations arise, which lead to the generation of noise. A special intensity of the noises is caused by the fact that the Conveyor blades suddenly intervene in the air flow, for example when passing a stationary edge of the housing.
Ein Gebläse, insbesondere ein Querstromgeoläse mit einem aus einzelnen Förderschaufein gebildeten trommeiförmigen Rotor soll so gestaltet werden, daß eine möglichst geräuscharme Luftförderung erzielt werden kann. Dieses geschieht gemäß der Erfindung dadurch, daß die Förderschaufeln auf dem Rotormantel in spitzem Vrinkel zur Rotorachse angeordnet sind. Damit die trommeiförmige Gestaltung des Rotors erhalten bleibt, sollten die Förderschaufeln entsprechend der Wölbung des Rotormantels verwunden sein.A fan, in particular a cross-flow geolaser with a drum-shaped rotor formed from individual conveyor blades, is to be designed in such a way that the air can be conveyed as quietly as possible. This is done according to the invention characterized in that the feed vanes are arranged on the rotor casing at an acute V r inkel to the rotor axis. So that the drum-shaped design of the rotor is retained, the conveyor blades should be twisted according to the curvature of the rotor shell.
Gegenüber einem bekannten Gebläse mit zur Rotorachse parallel verlaufenden Förderschaufeln wird bei einem Gebläse nach der Erfindung das schlagartige Eingreifen der Förderschaufeln in den Luftstrom vermieden. Ein entscheidender Geräuschfaktor ist somit ausgeschaltet.Compared to a known fan with conveyor blades running parallel to the rotor axis, a fan according to the Invention avoided the sudden engagement of the conveyor blades in the air flow. A crucial noise factor is thus switched off.
— 2 ~- 2 ~
409847/0581409847/0581
Die beigefügte Zeichnung stellt ein Ausführungsbeispiel der Erfindung dar.The accompanying drawing represents an embodiment of the Invention.
Es zeigen:Show it:
Fig. 1: Die Draufsicht auf einen Rotor und Fig. 2: Einen Querschnitt durch den Rotor.Fig. 1: The top view of a rotor and Fig. 2: A cross section through the rotor.
Der Rotor besitzt auf seinem Umfang eine Anzahl Förderschaufeln 1, welche während des Betriebes die Luftförderung bewirken. Um das schlagartige Eingreifen der Förderschaufeln in den Luftstrom zu vermeiden, sind diese in spitzem Winkel zur Rotorachse 2 angeordnet und entsprechend der Wölbung des Rotormantels verwunden. Die Größe des Verwindungswinkels kann je nach den vorliegenden Bedingungen beliebig gewählt werden.The rotor has a number of conveyor blades on its circumference 1, which cause the air to be conveyed during operation. About the sudden engagement of the conveyor blades To avoid in the air flow, these are arranged at an acute angle to the rotor axis 2 and corresponding to the curvature twist of the rotor shell. The size of the twist angle can be arbitrary depending on the prevailing conditions to get voted.
40984 7/058140984 7/0581
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732322734 DE2322734A1 (en) | 1973-05-05 | 1973-05-05 | FAN |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732322734 DE2322734A1 (en) | 1973-05-05 | 1973-05-05 | FAN |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2322734A1 true DE2322734A1 (en) | 1974-11-21 |
Family
ID=5880086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19732322734 Pending DE2322734A1 (en) | 1973-05-05 | 1973-05-05 | FAN |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2322734A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0175229A2 (en) * | 1984-09-21 | 1986-03-26 | Heidolph-Elektro GmbH & Co. KG | Cross-current ventilator |
US5611667A (en) * | 1994-08-09 | 1997-03-18 | Kabushiki Kaisha Toshiba | Transverse fan |
EP0785362A1 (en) * | 1996-01-18 | 1997-07-23 | Mitsubishi Denki Kabushiki Kaisha | Cross flow fan impeller |
WO2004015275A1 (en) * | 2002-08-02 | 2004-02-19 | Spal S.R.L. | A centrifugal fan impeller with blades inclined relative to the axis of rotation |
-
1973
- 1973-05-05 DE DE19732322734 patent/DE2322734A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0175229A2 (en) * | 1984-09-21 | 1986-03-26 | Heidolph-Elektro GmbH & Co. KG | Cross-current ventilator |
EP0175229A3 (en) * | 1984-09-21 | 1987-09-30 | Heidolph-Elektro Gmbh & Co. Kg | Cross-current ventilator |
US5611667A (en) * | 1994-08-09 | 1997-03-18 | Kabushiki Kaisha Toshiba | Transverse fan |
EP0785362A1 (en) * | 1996-01-18 | 1997-07-23 | Mitsubishi Denki Kabushiki Kaisha | Cross flow fan impeller |
WO2004015275A1 (en) * | 2002-08-02 | 2004-02-19 | Spal S.R.L. | A centrifugal fan impeller with blades inclined relative to the axis of rotation |
US7210907B2 (en) | 2002-08-02 | 2007-05-01 | Spal S.R.L | Centrifugal fan impeller with blades inclined relative to the axis of rotation |
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