DE2322734A1 - FAN - Google Patents

FAN

Info

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
Application number
DE19732322734
Other languages
German (de)
Inventor
Helmut Dr Ing Hfert
Anton L Herborn Dipl Ing Jung
Manfred Dipl Ing Lapczyna
Gerhard Dr Phi Schmidt-Burbach
Lubomyr Dr Ing Turanskyj
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.)
Buderus AG
Original Assignee
BuderusSche Eisenwerke AG
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 BuderusSche Eisenwerke AG filed Critical BuderusSche Eisenwerke AG
Priority to DE19732322734 priority Critical patent/DE2322734A1/en
Publication of DE2322734A1 publication Critical patent/DE2322734A1/en
Pending 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
    • F04D29/26—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)

BUDERUS'SCHE EISENWERKEBUDERUS'S EISENWERKE TP/F/Z/PG 19-107 - 5 -TP / F / Z / PG 19-107 - 5 - PatentansprücheClaims Gebläse, insbesondere Querstromgebläse mit einem aus einzelnen Förderschaufein gebildeten trommeiförmigen Rotor, dadurch gekennzeichnet, daß die Förderschaufeln (1) auf dem Rotormantel in spitzem Winkel zur Rotorachse (2) angeordnet sind.Blower, in particular cross-flow blower with a drum-shaped one formed from individual conveyors Rotor, characterized in that the conveyor blades (1) on the rotor casing in are arranged at an acute angle to the rotor axis (2). 2. Gebläse nach Anspruch 1, dadurch gekennzeichnet, daß die Förderschaufeln (1) entsprechend der Wölbung des Rotormantels verwunden sind.2. Blower according to claim 1, characterized in that that the conveyor blades (1) are twisted according to the curvature of the rotor shell. 409847/0581409847/0581 LeerseiteBlank page
DE19732322734 1973-05-05 1973-05-05 FAN Pending DE2322734A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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