EP1797333B1 - Ventilateur comprenant une roue - Google Patents

Ventilateur comprenant une roue Download PDF

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Publication number
EP1797333B1
EP1797333B1 EP05795191A EP05795191A EP1797333B1 EP 1797333 B1 EP1797333 B1 EP 1797333B1 EP 05795191 A EP05795191 A EP 05795191A EP 05795191 A EP05795191 A EP 05795191A EP 1797333 B1 EP1797333 B1 EP 1797333B1
Authority
EP
European Patent Office
Prior art keywords
air
fan
fan according
wall
rotation
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.)
Not-in-force
Application number
EP05795191A
Other languages
German (de)
English (en)
Other versions
EP1797333A1 (fr
Inventor
Wolfgang Arno Winkler
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.)
Ebm Papst St Georgen GmbH and Co KG
Original Assignee
Ebm Papst St Georgen GmbH and Co KG
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 St Georgen GmbH and Co KG filed Critical Ebm Papst St Georgen GmbH and Co KG
Publication of EP1797333A1 publication Critical patent/EP1797333A1/fr
Application granted granted Critical
Publication of EP1797333B1 publication Critical patent/EP1797333B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • 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

Definitions

  • the invention relates to a fan with a fan, which can also be referred to as Heilleitrad.
  • this object is achieved by a fan according to claim 1. Because the air guide vanes from the inlet openings opposite to the predetermined direction of rotation to the outlet openings, the pressure in the fan can build up over a greater distance, which benefits the air performance. In addition, such a design allows for a very compact and low design when needed.
  • Such a fan is particularly well suited for the cooling of electrical components on printed circuit boards.
  • Fig. 1 shows a side view of the fan 10 of a circuit board fan, as shown in Fig. 5 and 6 is shown.
  • the fan 10 rotates in operation in the direction of an arrow 14 in a predetermined direction of rotation about a rotation axis eleventh Fig. 6 shows a slightly different sized fan wheel, which is designated 10 ', but in terms of its structure and its drive with the fan 10 of the Fig. 1 to 5 matches.
  • To drive the fan 10 is preferably an electronically commutated external rotor motor 12, in the Fig. 5 and 6 is shown in section.
  • the fan 10 has an inner baffle 16, which is concave when viewed from above, and an outer baffle 18, which is also concave as seen from above, wherein the curvatures of the baffles 16, 18 are designed so that an air passage 20 results.
  • this air passage 20 is sucked in operation, ie upon rotation of the fan 10, air in the direction of arrows 22, that is approximately axially, and this air is blown out again in a radial plane (arrows 24), z. B. on electronic components 28 on a printed circuit board 26, as in Fig. 5 shown.
  • the air inlet 40 (dimension arrow X1) is greater than the air outlet 42 (dimension arrow X2) to substantially improve the pressure build-up in the fan 10 and thereby the cooling effect.
  • the two air guide walls 16, 18 are connected to one another within the air passage 20 by five air guide vanes 30, 32, 34, 36, 38.
  • the air guide vane 30 is shown partially cut away to show the course of the air guide vane 38 completely.
  • the air guide vane 30 approximately at the position 7.30 clock (based on the dial), extending in the upper part of the Fig. 4 counter to the direction of rotation 14 approximately to the position 5.00 clock and extends from there according to the lower part of Fig. 4 , as well as according to Fig. 3 continue until about 2 o'clock.
  • Such an air guide vane thus extends in this example from the inlet to the outlet about 160 to 180 °.
  • five air guide channels 39 are formed in this example, each beginning at a circular sector-shaped inlet 40 on the upper end face of the fan wheel 10 and extending over about 180 ° to an associated outlet 42 at the periphery of this fan wheel 10.
  • This outlet itself has an extension of about 120 °, because the air vanes form an oblique boundary of the outlet 42, and has approximately the shape of a parallelogram.
  • the outlet 42 visible there is delimited by the two air guide vanes 36, 38 and the two air guide surfaces 16, 18.
  • the number of air vanes depends on the airflow requirement and the permitted noise level. If, for reasons of noise, the speed must be low, this will affect the number of blades needed. This number can be optimized by experiments.
  • the sectional view according to Fig. 2 shows on the inside of the air guide 16 a part 52 of the rotor 50.
  • the part 52 is preferably formed integrally with the fan 10 and has approximately the shape of a shell in cross section.
  • a bearing tube 58 is provided, in which a sintered bearing 60 is pressed.
  • the stator 62 of the motor is pressed.
  • a sealing plug 64 is pressed, and this has resilient claws 66, which engage during assembly in an annular groove 68 at the lower end of the shaft 56 and thereby secure against removal.
  • a magnetic yoke 70 is fixed, and to this a rotor magnet 72 is fixed, which cooperates with the stator 62.
  • stator 62 mounted on the circuit board 26 characterized in that the lower end of the bearing tube 58 is pressed into a recess 74 of the circuit board 26 to a stop 76.
  • an air guide member 76 is fixed around the stator 62, which is provided with support legs 78 and locking feet 80 and is secured in the manner shown on the circuit board 26 by snapping.
  • the part 76 connects directly to the outlet openings 42 of the fan wheel 10. Its distance from the printed circuit board 26 increases in the direction away from the stator 62. This part 76 improves the cooling and avoids unnecessary turbulence of the air at the points where it exits the fan 10.
  • the printed circuit board 26, on which the stator 62 and the part 76 are mounted, can be transported in this form.
  • the fan 10 is fixed by the shaft 56 is inserted into the bearing 60 and locked there by the resilient claws 66.
  • These claws preferably have no sliding contact with the annular groove 86 in order to avoid friction losses.
  • Subsequent mounting of the impeller 10 is recommended because the shaft 56 has a diameter in practice, which corresponds approximately to a knitting needle, so that they could easily bend when struck. Mounting at the work site of the device prevents damage during transport.
  • the structure of the engine 12 is at Fig. 6 same as at Fig. 5
  • the fan 10 'further extends upward, which may be fluidly advantageous.
  • the part 76 is identical to the part 76, which at Fig. 5 has been described.
  • the inlet opening X1 is larger than the outlet opening X2, in order to achieve a good pressure build-up and a good cooling.
  • openings 80 which are preferably distributed symmetrically to avoid imbalances in the fan 10.
  • the openings 80 are each preferably as shown, for example, following the point at which a wing 30, 32, 34, 36, 38 in the in Fig. 7 the lower part of the inner wall 16 passes, so that through these recesses 80 cooling air is transported to the area which lies between the circuit board 76 and the inner wall 16 of the fan 10. This air cools for a motor 12, and on the other hand cools - not shown - electronic components, which are arranged there on the circuit board 76. This increases the area available on the printed circuit board 76 for component mounting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Claims (17)

  1. Ventilateur comprenant une roue de ventilateur (10, 10') qui est conçue pour tourner autour d'un axe de rotation (11) dans un sens de rotation (14) prédéfini et qui présente une paroi extérieure (18) qui est reliée rigidement à une paroi intérieure (16),
    des canaux de guidage d'air (39) courbes étant formés entre les deux parois (16, 18), lesquels s'étendent chacun d'une ouverture d'entrée axiale (40) vers une ouverture de sortie radiale (42),
    une ouverture d'entrée axiale (40) présentant une plus petite distance à l'axe de rotation (11) qu'une ouverture de sortie radiale (42),
    et les canaux de guidage d'air (39) étant séparés les uns des autres par des aubes de guidage d'air (30, 32, 34, 36, 38) qui s'étendent chacune à l'encontre du sens de rotation (14) prédéfini d'un point situé entre deux ouvertures d'entrée (40) vers un endroit situé entre deux ouvertures de sortie (42) et là, d'un endroit de la paroi extérieure (18) situé en avant par rapport au sens de rotation (14) prédéfini vers un endroit de la paroi intérieure (16) situé plus en arrière par rapport au sens de rotation (14) prédéfini,
    de sorte que les canaux de guidage d'air (39) s'étendent en hélice de leur ouverture d'entrée (40) vers leur ouverture de sortie (42)
    et font passer l'air aspiré d'un écoulement axial à l'ouverture d'entrée (40) à un écoulement à l'ouverture de sortie (42) qui, à l'état monté du ventilateur, s'étend parallèlement à un substrat (26) sur lequel le ventilateur est monté.
  2. Ventilateur selon la revendication 1, dans lequel l'ouverture d'entrée d'air axiale (40 ; X1) d'un canal de guidage d'air (39) est plus grande que l'ouverture de sortie d'air radiale (42 ; X2) de ce canal de guidage d'air (39).
  3. Ventilateur selon la revendication 1 ou 2, dans lequel l'extension radiale (X1) d'une ouverture d'entrée d'air axiale (40) est plus grande que l'extension axiale (X2) d'une ouverture de sortie d'air radiale (42).
  4. Ventilateur selon l'une des revendications 1 à 3, dans lequel la section transversale d'un canal de guidage d'air (39) diminue de manière sensiblement continue dans la direction d'écoulement.
  5. Ventilateur selon l'une des revendications précédentes, dans lequel, dans la région des ouvertures d'entrée d'air (40), les aubes de guidage d'air (30, 32, 34, 36, 38) s'étendent approximativement en direction radiale entre les deux parois de guidage d'air (16, 18).
  6. Ventilateur selon l'une des revendications précédentes, dans lequel la paroi intérieure (16) de la roue de ventilateur (10) est reliée au rotor (50) d'un moteur à commutation électronique (12) qui, en fonctionnement, entraîne la roue de ventilateur (10) dans le sens de rotation (14) prédéfini.
  7. Ventilateur selon l'une des revendications précédentes, dans lequel, à la suite ou prolongement des ouvertures de sortie (42) de la roue de ventilateur (10), il est prévu un élément de guidage d'air (76) stationnaire qui forme une ouverture de sortie qui s'élargit dans la direction l'éloignant des ouvertures de sortie (42) de la roue de ventilateur (10 ; 10').
  8. Ventilateur selon l'une des revendications précédentes, dans lequel au moins une des parois de guidage d'air (16, 18) est, vue du côté entré d'air de la roue de ventilateur, de forme concave.
  9. Ventilateur selon la revendication 8, dans lequel les deux parois de guidage d'air (16, 18) sont concaves de la même manière ou le même esprit.
  10. Ventilateur selon l'une des revendications précédentes, dans lequel la paroi de guidage d'air intérieure (16) est pourvue dans sa région centrale d'un élément de liaison (52) pour la liaison avec le rotor extérieur (50) d'un moteur à induit extérieur à commutation électronique (12).
  11. Ventilateur selon la revendication 10, dans lequel une pièce de retour magnétique (70) en matériau ferromagnétique doux, sur laquelle un aimant permanent (72) du rotor extérieur (50) est disposé, est intégrée dans l'élément de liaison (52).
  12. Ventilateur selon la revendication 10 ou 11, dans lequel un arbre (56) du moteur (12) est fixé dans l'élément de liaison (52).
  13. Ventilateur selon l'une des revendications précédentes, dans lequel la paroi intérieure (16) présente au moins une ouverture ou traversée (80) qui permette un écoulement d'air de refroidissement depuis un canal de guidage d'air à travers cette paroi intérieure (16) de la roue de ventilateur (10).
  14. Ventilateur selon l'une des revendications précédentes, dans lequel les aubes de guidage d'air (30, 32, 34, 36, 38) s'étendent chacune à l'encontre du sens de rotation (14) prédéfini d'un point ou endroit situé entre deux ouvertures d'entrée (40) adjacentes vers un point ou endroit situé entre deux ouvertures de sortie (42) adjacentes,
    la distance angulaire entre le point ou endroit de transition d'une aube de guidage d'air (30, 32, 34, 36, 38) à la paroi intérieure (16), laquelle distance angulaire est mesurée sur cette aube de guidage d'air entre l'ouverture d'entrée (40) et l'ouverture de sortie (42), étant supérieure à un cinquième d'un tour complet de la roue de ventilateur (10 ; 10').
  15. Ventilateur selon la revendication 14, dans lequel la distance angulaire est supérieure à un quart d'un tour complet de la roue de ventilateur (10 ; 10').
  16. Ventilateur selon la revendication 14 ou 15, dans lequel la distance angulaire est d'environ 160° à 180°.
  17. Ventilateur selon l'une des revendications précédentes, lequel est conçu ou réalisé pour refroidir une carte à circuit imprimé (26).
EP05795191A 2004-10-09 2005-10-01 Ventilateur comprenant une roue Not-in-force EP1797333B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202004015896 2004-10-09
DE202005015357U DE202005015357U1 (de) 2004-10-09 2005-09-29 Lüfter mit einem Lüfterrad
PCT/EP2005/010624 WO2006040031A1 (fr) 2004-10-09 2005-10-01 Ventilateur comprenant une roue

Publications (2)

Publication Number Publication Date
EP1797333A1 EP1797333A1 (fr) 2007-06-20
EP1797333B1 true EP1797333B1 (fr) 2008-03-26

Family

ID=35613285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05795191A Not-in-force EP1797333B1 (fr) 2004-10-09 2005-10-01 Ventilateur comprenant une roue

Country Status (5)

Country Link
US (1) US8105011B2 (fr)
EP (1) EP1797333B1 (fr)
AT (1) ATE390563T1 (fr)
DE (2) DE202005015357U1 (fr)
WO (1) WO2006040031A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9428237B2 (en) * 2010-09-01 2016-08-30 Peer Toftner Motorcycle with adjustable geometry
GB2503531A (en) * 2012-06-29 2014-01-01 Samsung Electro Mech Fan motor structure
DE102014112821A1 (de) * 2014-09-05 2016-03-10 Ebm-Papst Mulfingen Gmbh & Co. Kg Lüfter mit Leiterplattenkühlkreislauf
JP6312338B2 (ja) * 2016-02-26 2018-04-18 ミネベアミツミ株式会社 遠心ファン
JP2018053804A (ja) * 2016-09-29 2018-04-05 日本電産テクノモータ株式会社 送風機

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US2658455A (en) * 1948-02-26 1953-11-10 Laval Steam Turbine Co Impeller with center intake
US3260443A (en) * 1964-01-13 1966-07-12 R W Kimbell Blower
US3395649A (en) * 1966-09-27 1968-08-06 Ampco Metal Inc Impeller construction
US3984193A (en) * 1974-10-07 1976-10-05 General Motors Corporation Radial-flow turbomachine
US4257733A (en) * 1978-12-26 1981-03-24 Carrier Corporation Diffuser control
DE3247453C1 (de) 1982-12-22 1983-12-15 Funken & Co GmbH, 5200 Siegburg Ventilatorlaufrad und Verfahren zu seiner Herstellung
US4643639A (en) * 1984-12-24 1987-02-17 Sundstrand Corporation Adjustable centrifugal pump
GB2190429B (en) * 1986-04-14 1990-10-17 Hitachi Ltd An electric blower
US4802817A (en) * 1987-12-23 1989-02-07 Sundstrand Corporation Centrifugal pump with self-regulating impeller discharge shutter
DE4131193A1 (de) * 1991-09-19 1993-03-25 Bayerische Motoren Werke Ag Radialventilator mit verwundenen schaufeln
JP3482668B2 (ja) 1993-10-18 2003-12-22 株式会社日立製作所 遠心形流体機械
EP0666424B1 (fr) 1994-02-05 1997-10-15 PAPST-MOTOREN GmbH & Co. KG Ventilateur avec rotor, particulièrement un rotor radial
JP3796974B2 (ja) * 1998-07-31 2006-07-12 松下電器産業株式会社 電動送風機
TW533277B (en) * 1998-05-13 2003-05-21 Matsushita Electric Ind Co Ltd Electric fan and electric cleaner using the electric fan
US6074166A (en) * 1998-10-01 2000-06-13 Moddemeijer; Pieter J. H. Pump
DE10020878C2 (de) * 2000-04-28 2002-05-02 Verax Ventilatoren Gmbh Lüfter insbesondere zur Belüftung von elektronischen Geräten
DE10122516B4 (de) 2001-05-09 2006-10-19 Mtu Friedrichshafen Gmbh Laufrad
AU2003259558A1 (en) * 2002-08-28 2004-03-19 Ebara Corporation Centrifugal impeller and pump apparatus
US7476081B2 (en) * 2005-10-03 2009-01-13 Mitsubishi Heavy Industries, Ltd. Centrifugal compressing apparatus

Also Published As

Publication number Publication date
ATE390563T1 (de) 2008-04-15
DE202005015357U1 (de) 2006-01-05
US20090142191A1 (en) 2009-06-04
DE502005003503D1 (de) 2008-05-08
EP1797333A1 (fr) 2007-06-20
WO2006040031A1 (fr) 2006-04-20
US8105011B2 (en) 2012-01-31

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