EP0826884A2 - Lüfter - Google Patents
Lüfter Download PDFInfo
- Publication number
- EP0826884A2 EP0826884A2 EP97110004A EP97110004A EP0826884A2 EP 0826884 A2 EP0826884 A2 EP 0826884A2 EP 97110004 A EP97110004 A EP 97110004A EP 97110004 A EP97110004 A EP 97110004A EP 0826884 A2 EP0826884 A2 EP 0826884A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- driving element
- fan
- fan wheel
- fan according
- contact surface
- 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
Links
Images
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
- F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
Definitions
- the invention is based on a fan in which a Fan wheel by means of a driving element with a shaft is connected, according to the features of the preamble of Claim 1.
- Such a fan is known from DE 44 15 915 C1.
- the fan consists of a fan wheel and a fan hub, are firmly attached to the fan blades.
- the fan wheel is arranged on a shaft that is towards the free Shaft end has two stop shoulders. On the of that free shaft end from the second stop shoulder is one Drive plate attached.
- the fan wheel is with the Fan hub is loosely attached to the shaft end and is included a retaining screw in the front of the shaft is screwed in, secured.
- the fan wheel has between the first stop shoulder from the shaft end and the Retaining screw axial play. The fan wheel can be on the Turn the shaft so that the shaft has no torque directly transmits.
- the motor torque is transferred from the shaft to the fan wheel Transfer drive disc, which is via spring or Damping elements with the fan hub in the direction of rotation connected is.
- the damping elements transmit that Torque and also aim that the fan wheel from Vibrations of the shaft is decoupled.
- the decoupling of the Fan from the vibration of the shaft will only reached when the fan wheel is loose, d. H. with axial and radial play, is mounted on the shaft, otherwise over this connection the vibrations are transmitted.
- the fan wheel has an imbalance or a height or Flattened face so that the fan wheel wobbles when Runs, so this can not be sufficient by the loose fit of the fan hub on the shaft can be reduced.
- the fan wheel itself becomes a high-frequency vibration exciter. Especially with larger fan wheels, where the Amplitude of the wobble from inside to outside according to the Beam set significantly enlarged and therefore large forces generated, this can lead to the fan hub deflects, the fan wheel rubs against the housing and the fan and the adjacent components are destroyed.
- the described fan has through the damping elements, which is between the driving element and the fan wheel are a very large length. The damping elements also change it at different operating temperatures Damping behavior, which means that the fan at different Operating temperatures has a different running behavior.
- the fan wheel is radial on the Driving element and axially through defined contact surfaces on Driving element and fixed to the fan wheel itself, creating a Wobble of the fan wheel is prevented.
- the fan wheel is directly connected to a larger mass and can do not become a high-frequency vibration exciter.
- the fan wheel directly on the Driving element without intermediate elements, a short overall length reached.
- the running behavior remains at different Operating temperatures constant.
- the driving element has a radial contact surface, on which the fan wheel with a radial contact surface is attached and fixed radially, have fan wheel and Driving element exactly defined positions to each other. Game that arises when, for example, both parts on the Shaft with different tolerances are stored avoided and thus also unrest in the fan movement.
- the fan wheel By webs between the radial contact surface of the Fan wheel and the driving element, the fan wheel is exact arranged in the center, which ensures smooth running.
- the webs can be on the radial contact surface of the Fan wheel or on the radial contact surface of the Take away element.
- the fan wheel on the driving element is also advantageous Axially fixed contact surfaces, which are in the outermost area of the driving element.
- On the outer area of the Fan wheels kick the largest according to the radiation set Amplitudes of a wobble and thus the largest Powers up.
- the acting torque is reduced to a minimum.
- Driving element dimensioned weaker and the Wobble can be reduced. It can also be particularly useful large fan wheels effectively absorb the greater forces will. Due to a weaker dimensioned driving element, in particular by a driving element with three arms Weight and costs can be saved. By a little Weight is the influence on the rotational movement by the Driving element reduced and it becomes less for the drive Energy needed.
- the driving element with the shaft by friction is connected in a rotationally fixed manner, for example with a clamp seat, Cone seat, shrink fit or by means of clamping elements, wedges, Flanges, etc., will be inexpensive and easy producible rotatable connection reached.
- a high Alignment accuracy is achieved when that Driving element in its hub, for example 3 webs has, which radially on the driving element when plugged fix the shaft and the driving element separately axially, for example on an abutment shoulder of the shaft, is fixed and non-rotatably connected.
- the driving element is preferably pressed on the shaft, which is particularly inexpensive.
- the press fit be, for example, more or less deep is pressed.
- a so-called soft screwing is preferred applied, which prevents tolerance chains.
- a soft screwdriving is achieved, for example, when the Screw head only comes into contact with the plastic and only this biased noteworthy.
- the fan wheel is made of plastic and the screw head only comes into contact with the fan wheel and not with the Driving element, which is for example made of metal.
- This Effect is enhanced by using a screw which has a larger screw head in circumference and this only in the outer area with the fan wheel in system is coming. This creates a larger area of the plastic biased.
- the fan wheel and Driving element with small, concentric radial Contact surfaces come into contact because they are simply high Accuracy must be established.
- the preload in the plastic ensures that the screw does not loosen. This effect can be done by pasting a screw lock can be increased. It is suitable for this for example a spring washer, a serrated lock washer, a Toothed lock washer, a spring lock washer, a snap lock or a locking tooth screw etc.
- the pins become non-positive Torque transmission is used to secure the Fan function achieved with a short overall length.
- the driving element made of a material that through the Environment, e.g. structural steel (e.g. ST 37) in a humid environment, is covered with a coating the driving element with a material that the Driving element protects from the environment, the function of the Long-term fan.
- a coating the driving element with a material that the Driving element protects from the environment, the function of the Long-term fan.
- This can be done, for example Metal coatings, e.g. with zinc, chrome, nickel etc., or also can be achieved by plastic coatings.
- Metallic Layers can be applied using immersion processes, Brewing process, contact process or galvanic process be applied.
- the galvanic process is special Advantageous, since it is easy to control on the one hand and other layers with this method in the desired thickness can be applied quickly.
- the driving element can also be made of weight and Elasticity reasons made of plastic or suitable Materials e.g. corrosion protection is unnecessary make, exist.
- a shaft 5 is shown on the one Driving element 4 is mounted with a press fit 10.
- the Hub 22 of the driving element 4 extends across the width of the driving element 4 in the direction of the free shaft end and in the opposite direction. This allows on Driving element 4 occurring torques better absorbed will.
- the driving element 4 has an axial Projection, which at the same time has a radial contact surface 8 represents.
- On the radial contact surface 8 is a fan wheel 1 with a radial contact surface 2, on which Fan blades 3 are firmly attached.
- On the radial Contact surface 2 is preferably three webs 9, with which the fan wheel 1 on the driving element 4 in radial Direction is fixed exactly.
- the fan wheel 1 is axially defined by annular Contact surfaces 7, 23 on the driving element 4 and on the fan wheel 1 fixed yourself.
- the contact surfaces 7, 23 are in the outer area of the driving element 4.
- the driving element 4 and the fan wheel 1 are with a Screw connection 11 non-positively connected to one another. Screws 16 are preferably located in the center of the Contact surfaces 7, 23, which ensures a uniform Surface pressure is reached. Are on the driving element 4 Pin 13 mounted in the middle of the contact surfaces 7, 23. The Pins 13 are through cutouts 14 in the fan wheel 1 recorded a slightly larger scope than that Have pin 13, which prevents a tolerance chain becomes. This will center the fan clearly the driving element 4 guaranteed by the webs 9. In the Pins are holes 24 in the screws 16 of the fan side are screwed in, expediently a thread 15 is generated when screwing in. The pins 13 are shorter than the fan wheel 1 is wide, so that Screw heads 17 only come into contact with fan wheel 1.
- a so-called soft screwing case 12 is thus achieved, by only the fan wheel 1, which is made of plastic, a significant preload due to the tightening torque of the Screws 16 experiences.
- the screws 16 are through Screw locks 21, for example with a toothed lock washer or by using locking toothed screw 16 against loosen secured.
- Positioning aids 18 are located on the driving element 4 appropriate. These can be in the middle, for example Direction of the contact surfaces 7 and the pin 13 are.
- the Fan wheel 1 has a recess in the middle, so that the Positioning aids 18 still controlled from the fan side can be, even if the fan wheel 1 on the Driving element 4 sits.
- the driving element 4 and the fan wheel 1 after being fixed to each other are, by a positioning device, for example consists of pins which in the positioning aids 18, for example grooves, engages in a defined position be twisted. Then in the defined position then in an automated process positive connection between the driving element 4 and the Fan wheel 1 produces, for example by a screwdriver.
- the fan wheel 1 faces the driving element Stiffening webs 19 in the region of the pin 13 are interrupted 20, so that when turning the fan wheel 1 on the driving element 4, the pin 13 not to the Stiffening webs 19 get stuck.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Es zeigen
- Fig. 1
- eine Schnittzeichnung eines Lüfters,
- Fig. 2
- eine Frontansicht eines Mitnahmeelements,
- Fig. 3
- eine Ansicht der Rückseite eines Lüfterrads verkleinert dargestellt,
- Fig. 4
- ein Ausschnitt aus Figur 3 entsprechend der Linie IV.
Claims (14)
- Lüfter mit einem Lüfterrad (1), das mittels eines Mitnahmeelements (4) mit einer Antriebswelle (5) drehfest verbunden ist, dadurch gekennzeichnet, daß das mit der Antriebswelle (5) drehfest verbundene Mitnahmeelement (4) wenigstens eine axiale und wenigstens eine radiale Anlagefläche (7, 8) aufweist, an der das Lüfterrad (1) mit wenigstens einer axialen und radialen Anlagefläche (23, 2) anliegt.
- Lüfter nach Anspruch 1, dadurch gekennzeichnet, daß das Mitnahmeelement (4) mindestens drei sich in radialer Richtung erstreckende Arme (6) aufweist.
- Lüfter nach Anspruch 1, dadurch gekennzeichnet, daß das Mitnahmeelement (4) eine radiale Anlagefläche (8) besitzt, auf dem das Lüfterrad(1) mit einer radialen Anlagefläche (2) aufgesteckt und radial fixiert ist.
- Lüfter nach Anspruch 3, dadurch gekennzeichnet, daß die radiale Anlagefläche (2) des Lüfterrades (1) oder die radiale Anlagefläche (8) des Mitnahmeelements (4) mindestens drei Stege (9) aufweist.
- Lüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich die Anlageflächen (7) im radial äußeren Bereich des Mitnahmeelenents (4) befinden.
- Lüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Mitnahmeelement (4) auf die Welle (1) aufgepreßt ist.
- Lüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Mitnahmeelement (4) mittels einer Schraubverbindung (11) mit dem Lüfterrad (1) verbunden ist.
- Lüfter nach Anspruch 7, dadurch gekennzeichnet, daß die Schraubverbindung (11) mit mindestens einem nachgiebigen Material zusammenwirkt.
- Lüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Mitnahmeelement (4) oder das Lüfterrad (1) Zapfen (13) aufweist, die in Aussparungen (14) des anderen Bauteils greifen.
- Lüfter nach Anspruch 9, dadurch gekennzeichnet, daß die Zapfen (13) bei lockerer Schraubenverbindung (11) eine formschlüssige Verbindung schaffen.
- Lüfter nach Anspruch 10, dadurch gekennzeichnet, daß sich Bohrungen (24) in den Zapfen (13) befinden, in die jeweils eine Schraube (16) mit Gewinde (15) eingreift.
- Lüfter nach Anspruch 9 oder einem der folgenden Ansprüche, dadurch gekennzeichnet, daß das Lüfterrad (1) Versteifungsstege (19) aufweist, die im Bereich der Zapfen (13) unterbrochen (20) sind.
- Lüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß im Mitnahmeelement (4) und / oder im Lüfterrad (1) Positionierhilfen (18) integriert sind.
- Lüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auf dem Mitnahmeelement (4) eine Schicht gegen Korrosion aufgebracht ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19635179 | 1996-08-30 | ||
DE19635179A DE19635179A1 (de) | 1996-08-30 | 1996-08-30 | Lüfter |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0826884A2 true EP0826884A2 (de) | 1998-03-04 |
EP0826884A3 EP0826884A3 (de) | 1998-11-04 |
EP0826884B1 EP0826884B1 (de) | 2003-09-03 |
Family
ID=7804173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97110004A Expired - Lifetime EP0826884B1 (de) | 1996-08-30 | 1997-06-19 | Lüfter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0826884B1 (de) |
DE (2) | DE19635179A1 (de) |
ES (1) | ES2206631T3 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2801647A1 (fr) * | 1999-11-30 | 2001-06-01 | Valeo Thermique Moteur Sa | Dispositif de fixation d'une helice de ventilateur sur un arbre moteur |
FR2805573A1 (fr) * | 2000-02-25 | 2001-08-31 | Ecia Equip Composants Ind Auto | Ventilateur pour vehicule automobile |
WO2001071196A1 (de) * | 2000-03-18 | 2001-09-27 | Robert Bosch Gmbh | Vorrichtung zum befestigen eines anbauteils mit einer im wesentlichen glatten antriebswelle |
DE10136729A1 (de) * | 2001-07-27 | 2003-02-13 | Behr Gmbh & Co | Lüfter mit einem Lüfterrad |
EP1892421A2 (de) * | 2006-08-18 | 2008-02-27 | Behr GmbH & Co. KG | Axiallüfter mit elektrischem Antrieb |
PL422799A1 (pl) * | 2017-09-09 | 2019-03-11 | Wróblewski Andrzej Przedsiębiorstwo Techniczno-Handlowe Energowent | Wirnik wentylatora promieniowego |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3885888A (en) * | 1973-03-26 | 1975-05-27 | John G Warhol | Cooling fan for radiators and the like |
DE3339075A1 (de) * | 1983-10-28 | 1985-05-09 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Befestigung eines luefterfluegelrades an einer motorwelle |
DE9205097U1 (de) * | 1992-04-11 | 1993-08-05 | Robert Bosch Gmbh, 70469 Stuttgart | Lüfter mit einem eine topfförmige Nabe aufweisenden Lüfterrad |
DE4415915C1 (de) * | 1994-05-05 | 1995-06-22 | Siemens Ag | Anordnung eines Lüfters an der Läuferwelle einer elektrischen Maschine |
-
1996
- 1996-08-30 DE DE19635179A patent/DE19635179A1/de not_active Ceased
-
1997
- 1997-06-19 EP EP97110004A patent/EP0826884B1/de not_active Expired - Lifetime
- 1997-06-19 ES ES97110004T patent/ES2206631T3/es not_active Expired - Lifetime
- 1997-06-19 DE DE59710679T patent/DE59710679D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3885888A (en) * | 1973-03-26 | 1975-05-27 | John G Warhol | Cooling fan for radiators and the like |
DE3339075A1 (de) * | 1983-10-28 | 1985-05-09 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Befestigung eines luefterfluegelrades an einer motorwelle |
DE9205097U1 (de) * | 1992-04-11 | 1993-08-05 | Robert Bosch Gmbh, 70469 Stuttgart | Lüfter mit einem eine topfförmige Nabe aufweisenden Lüfterrad |
DE4415915C1 (de) * | 1994-05-05 | 1995-06-22 | Siemens Ag | Anordnung eines Lüfters an der Läuferwelle einer elektrischen Maschine |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2801647A1 (fr) * | 1999-11-30 | 2001-06-01 | Valeo Thermique Moteur Sa | Dispositif de fixation d'une helice de ventilateur sur un arbre moteur |
US6527516B2 (en) | 1999-11-30 | 2003-03-04 | Valeo Thermique Moteur | Device for fixing a fan-blade assembly onto a motor shaft |
DE10058935B4 (de) * | 1999-11-30 | 2015-04-02 | Valeo Thermique Moteur | Vorrichtung zur Befestigung einer Ventilatorschraube an einer Antriebswelle |
FR2805573A1 (fr) * | 2000-02-25 | 2001-08-31 | Ecia Equip Composants Ind Auto | Ventilateur pour vehicule automobile |
DE10109299B4 (de) * | 2000-02-25 | 2005-09-01 | Faurecia Bloc Avant | Ventilator für Kraftfahrzeuge |
WO2001071196A1 (de) * | 2000-03-18 | 2001-09-27 | Robert Bosch Gmbh | Vorrichtung zum befestigen eines anbauteils mit einer im wesentlichen glatten antriebswelle |
DE10136729A1 (de) * | 2001-07-27 | 2003-02-13 | Behr Gmbh & Co | Lüfter mit einem Lüfterrad |
EP1892421A2 (de) * | 2006-08-18 | 2008-02-27 | Behr GmbH & Co. KG | Axiallüfter mit elektrischem Antrieb |
EP1892421A3 (de) * | 2006-08-18 | 2008-03-26 | Behr GmbH & Co. KG | Axiallüfter mit elektrischem Antrieb |
PL422799A1 (pl) * | 2017-09-09 | 2019-03-11 | Wróblewski Andrzej Przedsiębiorstwo Techniczno-Handlowe Energowent | Wirnik wentylatora promieniowego |
Also Published As
Publication number | Publication date |
---|---|
EP0826884B1 (de) | 2003-09-03 |
DE59710679D1 (de) | 2003-10-09 |
DE19635179A1 (de) | 1998-03-05 |
ES2206631T3 (es) | 2004-05-16 |
EP0826884A3 (de) | 1998-11-04 |
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