EP1458982B1 - Fan device - Google Patents

Fan device Download PDF

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Publication number
EP1458982B1
EP1458982B1 EP02805296A EP02805296A EP1458982B1 EP 1458982 B1 EP1458982 B1 EP 1458982B1 EP 02805296 A EP02805296 A EP 02805296A EP 02805296 A EP02805296 A EP 02805296A EP 1458982 B1 EP1458982 B1 EP 1458982B1
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EP
European Patent Office
Prior art keywords
radial
webs
fan
fanwheel
openings
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
Application number
EP02805296A
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German (de)
French (fr)
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EP1458982A1 (en
Inventor
Wilfried Rückert
Dietrich Schmid
Dieter Rosmann
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1458982A1 publication Critical patent/EP1458982A1/en
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Publication of EP1458982B1 publication Critical patent/EP1458982B1/en
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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
    • F04D29/40—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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • 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
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Definitions

  • the invention relates to a fan device for an extractor hood as defined in the preamble of claim 1.
  • a fan device with the structural features of claim 1, but for an automobile, is known from US-A-5,951,245 known.
  • the fan assembly includes a cooling fan with radial impellers, which is provided with an axially directed inlet nozzle and a front cover plate of the impeller.
  • a guide ring In the inlet region and within the inlet opening of the radial impeller, a guide ring is arranged with a deflection angle of about 90 °, the front entry level terminates approximately with the plane of the cover plate of the impeller or lies in front of this.
  • the rear plane of the guide ring is arranged in the front region of the axial extent of the blade ring, resulting in a significantly lower axial depth without significantly affecting the running properties of the cooling fan.
  • an axial fan housing which consists in particular for cooling purposes in EMC-shielded devices, consisting of an air passage opening having a receiving part for an axial fan and the air passage opening covering, metallic Ablegitter.
  • the shielding grid is formed in the manner of an air guide wheel with blade-like, extending over a certain air guide length, substantially radially arranged guide webs.
  • the guide webs are arranged distributed in at least two concentric rows of circles, wherein the number of guide ribs in the outer circle row is greater than in the adjacent inner row of circles.
  • a circumferential angular spacing of the guide webs at the respective inner connection decreases starting from the innermost circle row up to the outermost circle row.
  • an inclination angle, ie an angle inclination of the guide ribs to the radial, as well as a guide angle, ie an angle inclination to the axial from the innermost circle row to the outermost circle row decrease.
  • each guide bar has an inlet side facing the top and a downstream side facing the bottom.
  • the upper sides in each case from the inflow side to the outflow side convexly curved in particular arcuately form with a radius of curvature R curved.
  • This radius of curvature is in each case selected such that a tangent applied in the region of the inflow side substantially corresponds to the respective guide angle, while a tangent applied to the opposite outflow side to the upper side corresponds essentially to the axial direction.
  • the underside of each guide bar should preferably be formed substantially flat, but it may also be provided that the underside is also provided with a concave or convex curvature.
  • the blower assembly comprises a centrifugal fan driven by an electric motor and a stationary means for selectively swirling a certain volume of air as the air enters the centrifugal blower assembly.
  • the device is arranged axially with respect to the axis of rotation of the ventilation device and is fixed in such a way that it does not move with respect to the fan.
  • the fan unit and the stationary device is surrounded by a housing, wherein the stationary device may be formed integrally with the housing.
  • the centrifugal blower arrangement has the disadvantage that the stationary device is structurally very complicated and only a low efficiency of the centrifugal fan is achieved due to the turbulence caused by the stationary device.
  • a fan with angled webs in which a network of struts and circular ribs are provided over the fan wheel.
  • the struts are angled here and have an outer part which extends in the radial direction from the outer periphery.
  • the inner part of the struts is angled relative to the outer part and blued in the plane of the outer part.
  • the cross section of the struts may have a rounded front and a back in the flow direction.
  • the circular ribs are arranged concentrically about the axis of the axial fan and connect the struts of the network.
  • the ribs While the inner ribs are axially aligned, the ribs are arranged inclined in the outer region of the network. Due to the bent or bent geometry of the struts, the edges of the blades of the fan wheel are not aligned with the course of the struts. A disadvantage of the network described is that only through the inclination of the ribs targeted guidance of the air flow is not possible.
  • a ventilator and diffuser device which comprises a first series of conically shaped vanes arranged concentrically and at a distance from one another. Furthermore, a second series of vanes or guide surfaces is provided which are cylindrical. The two rows of baffles are each firmly connected to each other, wherein the axial distance from each other via a screw spindle is variable.
  • Object of the present invention is to provide a fan device in particular for extractor hoods, which has a low noise during operation, a high air flow rate achieved with low power consumption and only a small space required.
  • the walls of the openings in the carrier part are curved in the flow direction such that the air can flow smoothly through the openings and / or smoothly overflow to the fan or that the air from the fan overflow to the openings smoothly and / or can flow out of the openings , the sucked or blown air is deflected gentler and significantly reduces the flow resistance of the openings in the support member.
  • the fan wheel is mounted on the carrier part, which has the openings in an inflow region of the fan wheel.
  • the openings are formed by a grid, which is formed by the walls having thin-walled webs, wherein the webs are curved in cross-section such that inflowing air is spatially pre-aligned and fed bumplessly to the fan or the air flowing from the fan air the openings spatially prepared and supplied bumpless, the flow resistance of the fan device can be reduced.
  • the curved webs are mechanically very stiff, so that the webs can be formed very thin-walled.
  • the flow resistance can be reduced and, on the other hand, the forces introduced by the fan can be transmitted better.
  • a motor preferably an electric motor
  • the fan wheel is mounted on an output shaft of the motor.
  • a particularly effective noise minimization and an increase in the fan power is achieved in that the curvature of the webs in the cross-sectional direction or the curvature of the walls of the openings is provided such that substantially in the axial direction of the fan to be sucked air is deflected in the direction of rotation of the fan so that it is guided by the blades of the fan in a simple manner to a Ausström Rail the fan with minimal flow resistance.
  • the walls of the openings or the webs of the grid are formed convexly or concavely in the cross-sectional direction so that air initially flowing perpendicular to the fan wheel slowly with increasing flow path in the grid and steadily in an at least approximately radial direction of the fan wheel, in the direction of rotation of the fan wheel is deflected.
  • the fan device it is provided to design the walls of the openings or the webs in the cross-sectional direction parabolic, so that initially only slightly deflected air flowing into the grid is increasingly deflected with increasing flow in the grid in the direction of rotation of the fan.
  • a very harmonious, afflicted with lower flow energy losses deflection is achieved in an advantageous manner, which additionally reduces noise and reduces the power requirement of the fan device with the same air flow.
  • Another constructional measure for the harmonious and quiet flow guidance of sucked by the fan air represents a further advantageous embodiment of the fan device, wherein a portion of the walls of the openings or a portion of the webs of the grid are at least approximately formed as a hyperboloid.
  • these webs or circular webs form so-called partial or radial inlet nozzles for the intake air, the circular webs ensure a constant flow over its entire circumference.
  • the fan wheel is surrounded by an air guide on which the carrier part is mounted in the installed position.
  • the air guide body is provided in a discharge area of the fan wheel with a separate outflow opening depending on the flow direction inflow, via which the air of the fan wheel can be guided.
  • FIG. 1 shows a preferred fan device 1 which can be used in a non-illustrated extractor hood, in a schematic longitudinal section, which has a motor 3 fastened to a carrier part 2, preferably an electric motor for driving a fan wheel 4.
  • the support part 2 has in a Anström Lake of the fan 4, a grid 5, which is formed by a plurality of webs 6.
  • a plurality of openings 17 are defined having walls 18 for conducting the air.
  • the walls 18 and the webs 6 are curved in the cross-sectional direction in such a way that air flowing in via the openings 17 of the grille 5 is supplied to the fan wheel 4 in a three-dimensionally and bum-free manner.
  • the motor 3 is provided with a housing 7, which is fastened to the support part 2 via a fastening device 8, which in the present case are designed as two screwed connections. In the region of the fastening device 8, two electrical contact modules 14 are provided for connecting the motor 3 to a power source.
  • a drive shaft 9 which is fixedly connected to the fan 4 and via which the rotary drive of the fan 4 by the motor 3 takes place.
  • fan 4 is a radial fan, in which a plurality of parallel to the drive shaft 9 extending blades 12 are arranged on a circle.
  • the carrier part 2 has, in the region of the grid 5, a flat central part 10 and an at least approximately frusto-conical outer region 11, which adjoins the middle part 10. Through the truncated-cone-shaped outer region 11 In addition, the flow resistance or a pressure drop during the suction of air through the fan 4 in the outer region 11 of the support member 2 is minimized because the sucked in the outer region 11 of the support member 2 air flows directly in the direction of the fan 4 and the curved Webs 6 in the radial direction on the fan 4 and the blades 12 is supplied.
  • the webs 6 of the grating 5 are convex or concave in the cross-sectional direction, so that sucked air at the webs 6 from a substantially vertical in the central part 10 and 11 in the outer region 11 primarily radial flow to the grid 5 in a radial flow direction the fan 4 is deflected (see arrows 19). Dipped by the attachment or arrangement of the motor 3 in the inflow of the fan 4 and in the fan 4, the space required for the deflection of the sucked air axial space is optimally used, so that the fan device 1 is compact in the axial direction. Another advantage of this arrangement is the integration of Lucasleitmaschineen in the support part. 2
  • FIG. 2 shows a plan view of the carrier part 2 of the fan device 1.
  • the grid 5 is in addition to the webs formed as a circle webs 6 designed by so-called radial webs 13 like a net.
  • the central portion 10 of the support member, to which the motor is attached, has ventilation slots 16 for cooling the engine.
  • the outermost region 15 of the grid 5 is funnel-shaped, so that in cooperation with the circular webs 6 and the radial webs 13, the air is aerodynamically guided to the fan, as shown by the arrows 19 in FIGS. 1 and 2.
  • the radial webs 13 of the support member 2 are also formed, as shown in Fig. 3, in the cross-sectional direction such curved, that sucked by the fan 4 air in the direction of rotation of the fan 4 and the fan 4 is supplied to reduce a flow resistance.
  • sucked air is deflected by the circular webs 6, the outermost region 15 and the radial webs 13 three-dimensionally directed in the direction of rotation of the fan wheel 4 (arrow 19), whereby a flow resistance is minimized in a simple manner.
  • the curvature of the webs 6, 13 or the walls 18 of the webs 6, 13 can be designed for a direction opposite to the arrows 19 flow direction, with the same advantages as shown above, can be achieved.

Abstract

The invention relates to a fan device (1) comprising a fan wheel (4), which is mounted on a supporting part (2), whereby the supporting part (2) has openings (17) delimited by walls (18), and the walls (18) are curved in the direction of flow whereby permitting the air to smoothly flow in via the openings (17) and/or to smoothly flow over to the fan wheel (4) or permitting the air to smoothly flow over from the fan wheel (4) to the openings (17) and/or to flow out of the openings (17).

Description

Die Erfindung betrifft eine Lüftervorrichtung für eine Dunstabzugshaube wie im Oberbegriff des Anspruchs 1 definiert wird. Eine Lüftervorrichtung mit den strukturellen Merkmalen des Anspruchs 1, jedoch für ein Automobil, ist aus der US-A-5 951 245 bekannt.The invention relates to a fan device for an extractor hood as defined in the preamble of claim 1. A fan device with the structural features of claim 1, but for an automobile, is known from US-A-5,951,245 known.

Aus der DE 42 27 901 A1 ist eine Lüfteranordnung, insbesondere für die Kühlung von Kraftfahrzeugmotoren, bekannt. Die Lüfteranordnung umfasst einen Kühllüfter mit Radiallaufrädern, der mit einem axial gerichteten Einlaufstutzen und einer vorderseitigen Deckscheibe des Laufrades versehen ist. Im Einlaufbereich und innerhalb der Eintrittsöffnung des Radiallaufrades ist ein Leitring mit einem Umlenkwinkel von etwa 90 ° angeordnet, dessen vordere Eintrittsebene etwa mit der Ebene der Deckscheibe des Laufrades abschließt oder vor dieser liegt. Die rückwärtige Ebene des Leitringes ist im vorderen Bereich der axialen Erstreckung des Schaufelkranzes angeordnet, wodurch sich eine deutlich geringere axiale Bautiefe ohne eine wesentliche Beeinträchtigung der Laufeigenschaften des Kühllüfters ergibt.From the DE 42 27 901 A1 is a fan assembly, in particular for the cooling of motor vehicle engines, known. The fan assembly includes a cooling fan with radial impellers, which is provided with an axially directed inlet nozzle and a front cover plate of the impeller. In the inlet region and within the inlet opening of the radial impeller, a guide ring is arranged with a deflection angle of about 90 °, the front entry level terminates approximately with the plane of the cover plate of the impeller or lies in front of this. The rear plane of the guide ring is arranged in the front region of the axial extent of the blade ring, resulting in a significantly lower axial depth without significantly affecting the running properties of the cooling fan.

In der DE 197 53 373 A1 ist ein Axiallüfter-Gehäuse beschrieben, welches insbesondere für Kühlungszwecke bei EMV-abgeschirmten Geräten, bestehend aus einem eine Luftdurchlaßöffnung aufweisenden Aufnahmeteil für einen Axiallüfter und einem die Luftdurchlaßöffnung überdeckenden, metallischen Abschirmgitter besteht. Das Abschirmgitter ist nach Art eines Luft-Leitrades mit schaufelartigen, sich über eine bestimmte Luftführungslänge erstreckenden, im wesentlichen etwa radial angeordneten Leitstegen ausgebildet. Die Leitstege sind in mindestens zwei konzentrischen Kreisreihen verteilt angeordnet, wobei die Anzahl der Leitstege in der äußeren Kreisreihe größer ist als in der benachbarten inneren Kreisreihe. Des weiteren ist es vorgesehen, dass ein Umfangswinkelabstand der Leitstege an der jeweils inneren Anbindung ausgehend von der innersten Kreisreihe bis hin zur äußersten Kreisreihe abnimmt. Zusätzlich soll ein Neigungswinkel, d. h. eine Winkelneigung der Leitstege zur Radialen, sowie ein Leitwinkel, d. h. eine Winkelneigung zur Axialen von der innersten Kreisreihe bis hin zur äußersten Kreisreihe abnehmen.In the DE 197 53 373 A1 is described an axial fan housing, which consists in particular for cooling purposes in EMC-shielded devices, consisting of an air passage opening having a receiving part for an axial fan and the air passage opening covering, metallic Abschirmgitter. The shielding grid is formed in the manner of an air guide wheel with blade-like, extending over a certain air guide length, substantially radially arranged guide webs. The guide webs are arranged distributed in at least two concentric rows of circles, wherein the number of guide ribs in the outer circle row is greater than in the adjacent inner row of circles. Furthermore, it is provided that a circumferential angular spacing of the guide webs at the respective inner connection decreases starting from the innermost circle row up to the outermost circle row. In addition, an inclination angle, ie an angle inclination of the guide ribs to the radial, as well as a guide angle, ie an angle inclination to the axial from the innermost circle row to the outermost circle row decrease.

Aus der Schrägstellung jedes Leitsteges ergibt sich, dass jeder Leitsteg eine der Einströmseite zugekehrte Oberseite und eine der Ausströmseite zugekehrte Unterseite aufweist. Für eine gute Luftführung entlang der Leitstege ist es vorgesehen, die Oberseiten jeweils von der Einströmseite zur Ausströmseite hin konvex insbesondere kreisbogenförmig mit einem Krümmungsradius R gekrümmt auszubilden. Dieser Krümmungsradius ist jeweils derart gewählt, dass eine im Bereich der Einströmseite angelegte Tangente im wesentlichen dem jeweiligen Leitwinkel entspricht, während eine an der gegenüberliegenden Ausströmseite an die Oberseite angelegte Tangente im wesentlichen der Axialrichtung entspricht. Die Unterseite jedes Leitsteges soll bevorzugt im wesentlichen eben ausgebildet sein, wobei es jedoch auch vorgesehen sein kann, dass die Unterseite ebenfalls mit einer konkaven oder konvexen Krümmung versehen ist.From the inclination of each guide bar it follows that each guide bar has an inlet side facing the top and a downstream side facing the bottom. For a good air flow along the guide webs, it is provided that the upper sides in each case from the inflow side to the outflow side convexly curved in particular arcuately form with a radius of curvature R curved. This radius of curvature is in each case selected such that a tangent applied in the region of the inflow side substantially corresponds to the respective guide angle, while a tangent applied to the opposite outflow side to the upper side corresponds essentially to the axial direction. The underside of each guide bar should preferably be formed substantially flat, but it may also be provided that the underside is also provided with a concave or convex curvature.

Nachteilig hierbei ist jedoch, dass ein Einströmbereich und ein Ausströmbereich gekoppelt sind, was zu nicht beherrschbaren Strömungszuständen führt, die in bestimmten Betriebszuständen zu hohen Strömungswiderständen sowie zu einer hohen Geräuschentwicklung führen.The disadvantage here, however, that an inflow and an outflow area are coupled, resulting in uncontrollable flow conditions that lead in certain operating conditions to high flow resistance and high noise.

In der US 5,951,245 ist eine Anordnung eines Zentrifugalgebläses offenbart, bei der die Gebläseanordnung einen von einem Elektromotor angetriebenen Zentrifugalventilator und eine stationäre Einrichtung zum gezielten Verwirbeln einer bestimmten Luftvolumenmenge aufweist, wenn die Luft in die Zentrifugalgebläseanordnung eintritt. Die Einrichtung ist axial in Bezug auf die Rotationsachse der Ventilationseinrichtung angeordnet und ist derart befestigt, dass sie in Bezug auf den Ventilator keine Bewegung ausführt. Die Ventilatoreinheit und die stationäre Einrichtung ist von einem Gehäuse umgeben, wobei die stationäre Einrichtung einstückig mit dem Gehäuse ausgebildet sein kann.In the US 5,951,245 An arrangement of a centrifugal blower is disclosed in which the blower assembly comprises a centrifugal fan driven by an electric motor and a stationary means for selectively swirling a certain volume of air as the air enters the centrifugal blower assembly. The device is arranged axially with respect to the axis of rotation of the ventilation device and is fixed in such a way that it does not move with respect to the fan. The fan unit and the stationary device is surrounded by a housing, wherein the stationary device may be formed integrally with the housing.

Die Zentrifugalgebläseanordnung weist jedoch den Nachteil auf, dass die stationäre Einrichtung konstruktiv sehr aufwendig ausgestaltet ist und aufgrund der durch die stationäre Einrichtung bewirkten Verwirbelung der Luft nur ein geringer Wirkungsgrad des Zentrifugalventilators erreicht wird.However, the centrifugal blower arrangement has the disadvantage that the stationary device is structurally very complicated and only a low efficiency of the centrifugal fan is achieved due to the turbulence caused by the stationary device.

Weiterhin ist in der US 5,466,120A ein Lüfter mit abgewinkelten Stegen beschrieben. In dieser Schrift ist insbesondere ein Axiallüfter beschrieben, bei dem ein Netz aus Streben und kreisförmigen Rippen über den Lüfterrad vorgesehen ist. Die Streben sind hierbei abgewinkelten und weisen einen äußeren Teil auf, der in radialer Richtung vom äußeren Umfang aus verläuft. Der innere Teil der Streben ist gegenüber dem äußeren Teil abgewinkelt und verläut in der Ebene des äußeren Teils. Der Querschnitt der Streben kann in Strömungsrichtung eine abgerundete Vorderseite und eine fache Rückseite aufweisen. Die kreisförmigen Rippen sind konzentrisch um die Achse des Axiallüfterrades angeordnet und verbinden die Streben des Netzes. Während die inneren Rippen axial ausgerichtet sind, sind die Rippen im äußeren Bereich des Netzes geneigt angeordnet. Durch die gebogene beziehungsweise abgeknickte Geometrie der Streben sind die Kanten der Schaufeln des Lüfterrades nicht mit dem Verlauf der Streben ausgerichtet sind. Ein Nachteil des beschriebenen Netzes liegt darin, dass ausschließlich durch die Neigung der Rippen eine gezielte Führung des Luftstroms nicht möglich ist.Furthermore, in the US 5,466,120A a fan with angled webs described. In this document, in particular an axial fan is described in which a network of struts and circular ribs are provided over the fan wheel. The struts are angled here and have an outer part which extends in the radial direction from the outer periphery. The inner part of the struts is angled relative to the outer part and blued in the plane of the outer part. The cross section of the struts may have a rounded front and a back in the flow direction. The circular ribs are arranged concentrically about the axis of the axial fan and connect the struts of the network. While the inner ribs are axially aligned, the ribs are arranged inclined in the outer region of the network. Due to the bent or bent geometry of the struts, the edges of the blades of the fan wheel are not aligned with the course of the struts. A disadvantage of the network described is that only through the inclination of the ribs targeted guidance of the air flow is not possible.

Aus der US 867,596 ist eine Ventilator- und Diffusorvorrichtung bekannt, welche eine erste Reihe konisch ausgebildeter Schaufeln bzw. Leitbleche aufweist, die konzentrisch und beabstandet voneinander angeordnet sind. Des weiteren ist eine zweite Serie von Schaufeln bzw. Leitflächen vorgesehen, die zylindrisch ausgebildet sind. Die beiden Reihen der Leitbleche sind jeweils fest miteinander verbunden, wobei deren axialer Abstand zueinander über eine Schraubspindel veränderbar ist.From the US 867,596 For example, a ventilator and diffuser device is known which comprises a first series of conically shaped vanes arranged concentrically and at a distance from one another. Furthermore, a second series of vanes or guide surfaces is provided which are cylindrical. The two rows of baffles are each firmly connected to each other, wherein the axial distance from each other via a screw spindle is variable.

Aufgabe der vorliegenden Erfindung ist es, eine Lüftervorrichtung insbesondere für Dunstabzugshauben zu schaffen, welche im Betrieb eine geringe Geräuschentwicklung aufweist, eine hohe Luftfördermenge bei geringer Leistungsaufnahme erreicht und nur einen geringen Bauraum benötigt.Object of the present invention is to provide a fan device in particular for extractor hoods, which has a low noise during operation, a high air flow rate achieved with low power consumption and only a small space required.

Erfindungsgemäß wird diese Aufgabe mit einer Lüftervorrichtung gemäß den Merkmalen des Patentanspruches 1 gelöst.According to the invention this object is achieved with a fan device according to the features of claim 1.

Dadurch, dass die Wände der Öffnungen im Trägerteil in Strömungsrichtung derart gekrümmt sind, dass die Luft über die Öffnungen stoßfrei einströmen und/oder zum Lüfterrad stoßfrei überströmen kann oder dass die Luft vom Lüfterrad stoßfrei zu den Öffnungen überströmen und/oder aus den Öffnungen ausströmen kann, wird die angesaugte oder ausgeblasene Luft sanfter umgelenkt und der Strömungswiderstand der Öffnungen im Trägerteil wesentlich verringert. Durch die Verringerung des Strömungswiderstandes der erfindungsgemäßen Lüftervorrichtung wird im Betrieb insbesondere einer Dunstabzugshaube ein geringeres Betriebsgeräusch erzeugt und der Luftdurchsatz einer mit der erfindungsgemäßen Lüftervorrichtung versehenen Dunstabzugshaube wird in vorteilhafter Weise erhöht.
Darüber hinaus ist von Vorteil, dass das Lüfterrad am Trägerteil gelagert ist, welches in einem Anströmbereich des Lüfterrades die Öffnungen aufweist. Durch diese konstruktive Maßnahme wird die Bauteilanzahl der Lüftervorrichtung reduziert und eine kompakte, eine nur einen geringen Bauraum aufweisende Baueinheit gebildet. Dies ist insbesondere dann von Vorteil, wenn eine Dunstabzugshaube relativ flach ausgeführt werden soll.Characterized in that the walls of the openings in the carrier part are curved in the flow direction such that the air can flow smoothly through the openings and / or smoothly overflow to the fan or that the air from the fan overflow to the openings smoothly and / or can flow out of the openings , the sucked or blown air is deflected gentler and significantly reduces the flow resistance of the openings in the support member. By reducing the Flow resistance of the fan device according to the invention, a lower operating noise is generated in operation, in particular a cooker hood and the air flow rate of a provided with the fan device according to the invention extractor hood is increased in an advantageous manner.
In addition, it is advantageous that the fan wheel is mounted on the carrier part, which has the openings in an inflow region of the fan wheel. By this constructive measure, the number of components of the fan device is reduced and formed a compact, only a small space having structural unit. This is particularly advantageous when a cooker hood should be made relatively flat.

Dadurch, dass die Öffnungen durch ein Gitter gebildet werden, das durch die Wände aufweisende dünnwandige Stege ausgebildet wird, wobei die Stege im Querschnitt derart gekrümmt sind, dass einströmende Luft dem Lüfterrad räumlich vorgerichtet und stoßfrei zugeführt wird oder dass vom Lüfterrad abströmende Luft den Öffnungen räumlich vorgerichtet und stoßfrei zugeführt wird, kann der Strömungswiderstand der Lüftervorrichtung verringert werden.Characterized in that the openings are formed by a grid, which is formed by the walls having thin-walled webs, wherein the webs are curved in cross-section such that inflowing air is spatially pre-aligned and fed bumplessly to the fan or the air flowing from the fan air the openings spatially prepared and supplied bumpless, the flow resistance of the fan device can be reduced.

Weiterhin sind die gekrümmt ausgebildeten Stege mechanisch sehr steif, so dass die Stege sehr dünnwandig ausbildet werden können. Wodurch einerseits der Strömungswiderstand herabsetzt werden kann und andererseits die durch das Lüfterrad eingeleiteten Kräfte besser übertragen werden können.Furthermore, the curved webs are mechanically very stiff, so that the webs can be formed very thin-walled. As a result, on the one hand, the flow resistance can be reduced and, on the other hand, the forces introduced by the fan can be transmitted better.

Darüber hinaus ist von Vorteil, dass ein Motor, bevorzugt ein Elektromotor, am Trägerteil angeordnet ist und dass das Lüfterrad auf einer Abtriebswelle des Motors befestigt ist Durch diese konstruktive Maßnahme wird die Bauteilanzahl der Lüftervorrichtung weiter reduziert und eine kompakte, eine nur einen geringen Bauraum aufweisende Baueinheit gebildet. Weiterhin ist es möglich durch die gekrümmte und damit steife Ausbildung der Stege auch die durch den Motor eingeleiteten Kräfte aufzunehmen, wobei die Stege dünnwandig und damit strömungsgünstig ausgebildet werden können.In addition, it is advantageous that a motor, preferably an electric motor, is arranged on the carrier part and that the fan wheel is mounted on an output shaft of the motor. By this structural measure, the number of components of the fan device is further reduced and a compact, one having only a small space Building unit formed. Furthermore, it is possible by the curved and thus rigid formation of the webs also absorb the forces introduced by the motor, wherein the webs can be formed thin-walled and thus streamlined.

Eine besonders effektive Geräuschminimierung sowie eine Erhöhung der Lüfterleistung wird dadurch erreicht, dass die Krümmung der Stege in Querschnittsrichtung bzw. die Krümmung der Wände der Öffnungen derart vorgesehen ist, dass im wesentlichen in axialer Richtung auf das Lüfterrad zu angesaugte Luft in Drehrichtung des Lüfterrades umgelenkt wird, so dass diese von den Schaufeln des Lüfterrades auf einfache Art und Weise zu einem Ausströmbereich des Lüfterrades bei minimalen Strömungswiderständen geführt wird.A particularly effective noise minimization and an increase in the fan power is achieved in that the curvature of the webs in the cross-sectional direction or the curvature of the walls of the openings is provided such that substantially in the axial direction of the fan to be sucked air is deflected in the direction of rotation of the fan so that it is guided by the blades of the fan in a simple manner to a Ausströmbereich the fan with minimal flow resistance.

Um die von dem Lüfterrad angesaugte Luft räumlich bzw. dreidimensional vorgerichtet dem Lüfterrad zuzuführen, sind die Wände der Öffnungen bzw. die Stege des Gitters in Querschnittsrichtung konvex oder konkav gebildet, so dass zunächst senkrecht auf das Lüfterrad zuströmende Luft mit zunehmendem Strömungsweg in dem Gitter langsam und stetig in eine wenigstens annähernd radiale Richtung des Lüfterrades, und zwar in Drehrichtung des Lüfterrades umgelenkt wird.In order to supply the air sucked in by the fan spatially or three-dimensionally in front of the fan wheel, the walls of the openings or the webs of the grid are formed convexly or concavely in the cross-sectional direction so that air initially flowing perpendicular to the fan wheel slowly with increasing flow path in the grid and steadily in an at least approximately radial direction of the fan wheel, in the direction of rotation of the fan wheel is deflected.

In einer weiteren vorteilhaften Ausführungsform der Lüftervorrichtung ist es vorgesehen, die Wände der Öffnungen bzw. die Stege in Querschnittsrichtung parabelförmig auszugestalten, so dass in das Gitter einströmende Luft zunächst nur leicht umgelenkt wird und mit zunehmendem Strömungsweg in dem Gitter verstärkt in Drehrichtung des Lüfterrades umgelenkt wird. Damit wird in vorteilhafter Weise eine sehr harmonische, mit geringeren Strömungsenergieverlusten behaftete Umlenkung erreicht, welche zusätzlich eine Geräuschentwicklung reduziert und den Leistungsbedarf der Lüftervorrichtung bei gleicher Luftfördermenge reduziert.In a further advantageous embodiment of the fan device, it is provided to design the walls of the openings or the webs in the cross-sectional direction parabolic, so that initially only slightly deflected air flowing into the grid is increasingly deflected with increasing flow in the grid in the direction of rotation of the fan. Thus, a very harmonious, afflicted with lower flow energy losses deflection is achieved in an advantageous manner, which additionally reduces noise and reduces the power requirement of the fan device with the same air flow.

Eine weitere konstruktive Maßnahme zur harmonischen und geräuscharmen Strömungsführung von durch das Lüfterrad angesaugter Luft stellt eine weitere vorteilhafte Ausführungsform der Lüftervorrichtung dar, bei der ein Abschnitt der Wände der Öffnungen bzw. ein Teil der Stege des Gitters wenigstens annähernd als ein Hyperboloid ausgebildet sind. Damit bilden diese Stege bzw. Kreisstege sogenannte partielle bzw. radiale Einströmdüsen für die angesaugte Luft aus, wobei die Kreisstege über ihren gesamten Umfang eine gleichbleibende Strömungsführung gewährleisten.Another constructional measure for the harmonious and quiet flow guidance of sucked by the fan air represents a further advantageous embodiment of the fan device, wherein a portion of the walls of the openings or a portion of the webs of the grid are at least approximately formed as a hyperboloid. Thus, these webs or circular webs form so-called partial or radial inlet nozzles for the intake air, the circular webs ensure a constant flow over its entire circumference.

In einer weiteren vorteilhaften Ausgestaltung der Lüftervorrichtung kann es vorgesehen sein, dass das Lüfterrad von einem Luftleitkörper umgeben ist, an welchem das Trägerteil in Einbaulage befestigt ist. Der Luftleitkörper ist in einem Abströmbereich des Lüfterrades mit einer separaten Ausströmöffnung je nach Strömungsrichtung Einströmöffnung versehen, über welche die Luft des Lüfterrades gezielt führbar ist. Damit wird in vorteilhafter Weise erreicht, dass der Anströmbereich des Lüfterrades bzw. der Lüftervorrichtung durch die von dem Lüfterrad abgeführte Luft an den Abströmbereich des Lüfterrades nicht beeinträchtigt wird, wodurch insbesondere Turbulenzen, Verwirbelungen der angesaugten Luft auf einfache Art und Weise vermieden werden und ein Leistungsbedarf der Lüftervorrichtung reduziert wird.In a further advantageous embodiment of the fan device, it may be provided that the fan wheel is surrounded by an air guide on which the carrier part is mounted in the installed position. The air guide body is provided in a discharge area of the fan wheel with a separate outflow opening depending on the flow direction inflow, via which the air of the fan wheel can be guided. This is achieved in an advantageous manner that the Anströmbereich of the fan or the fan device is not affected by the discharged air from the fan to the outflow of the fan, which turbulence in particular, turbulence of the sucked air can be avoided in a simple manner and a power requirement the fan device is reduced.

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus dem anhand der Zeichnung näher beschriebenen Ausführungsbeispiel. Es zeigen:

Fig. 1
eine Lüftervorrichtung insbesondere für eine Dunstabzugshaube in einem stark schematisierten Querschnitt;
Fig. 2
eine Draufsicht auf das Trägerteil der Lüftervorrichtung gemäß Fig. 1; und
Fig. 3
eine Detailansicht eines Radialsteges im Querschnitt entlang der Linie III-III aus Fig. 2.
Further advantages and advantageous embodiments of the invention will become apparent from the embodiment described in more detail with reference to the drawing. Show it:
Fig. 1
a fan device in particular for a fume hood in a highly schematic cross section;
Fig. 2
a plan view of the support member of the fan device of FIG. 1; and
Fig. 3
a detailed view of a radial web in cross section along the line III-III of Fig. 2nd

In der Fig. 1 ist eine bevorzugte, in einer nicht näher dargestellten Dunstabzugshaube verwendbare Lüftervorrichtung 1 in einem schematisierten Längsschnitt dargestellt, welche einen an einem Trägerteil 2 befestigten Motor 3, bevorzugt einen Elektromotor zum Antreiben eines Lüfterrades 4 aufweist. Das Trägerteil 2 weist in einem Anströmbereich des Lüfterrades 4 ein Gitter 5 auf, das von mehreren Stegen 6 gebildet ist. Durch das Gitter 5 werden eine Vielzahl von Öffnungen 17 definiert, die Wände 18 zur Leitung der Luft aufweisen. Die Wände 18 bzw. die Stege 6 sind in Querschnittsrichtung derart gekrümmt, dass über die Öffnungen 17 des Gitters 5 einströmende Luft dem Lüfterrad 4 dreidimensional und stoßfrei vorgerichtet zugeführt wird.FIG. 1 shows a preferred fan device 1 which can be used in a non-illustrated extractor hood, in a schematic longitudinal section, which has a motor 3 fastened to a carrier part 2, preferably an electric motor for driving a fan wheel 4. The support part 2 has in a Anströmbereich of the fan 4, a grid 5, which is formed by a plurality of webs 6. Through the grid 5, a plurality of openings 17 are defined having walls 18 for conducting the air. The walls 18 and the webs 6 are curved in the cross-sectional direction in such a way that air flowing in via the openings 17 of the grille 5 is supplied to the fan wheel 4 in a three-dimensionally and bum-free manner.

Der Motor 3 ist mit einem Gehäuse 7 versehen, welches über eine Befestigungseinrichtung 8, die vorliegend als zwei Verschraubungen ausgeführt sind, an dem Trägerteil 2 befestigt ist. Im Bereich der Befestigungseinrichtung 8 sind zwei elektrische Kontaktmodule 14 zum Anschließen des Motors 3 an einer Stromquelle vorgesehen. Auf der dem Gitter 5 abgewandten Seite ragt aus dem Gehäuse 7 des Motors 3 eine Antriebswelle 9, welche fest mit dem Lüfterrad 4 verbunden ist und über die der Drehantrieb des Lüfterrades 4 durch den Motor 3 erfolgt. Beim Lüfterrad 4 handelt es sich um ein Radiallüfterrad, bei dem eine Vielzahl von sich parallel zur Antriebswelle 9 erstreckende Schaufeln 12 auf einem Kreis angeordnet sind.The motor 3 is provided with a housing 7, which is fastened to the support part 2 via a fastening device 8, which in the present case are designed as two screwed connections. In the region of the fastening device 8, two electrical contact modules 14 are provided for connecting the motor 3 to a power source. On the side facing away from the grid 5 protrudes from the housing 7 of the motor 3, a drive shaft 9 which is fixedly connected to the fan 4 and via which the rotary drive of the fan 4 by the motor 3 takes place. When fan 4 is a radial fan, in which a plurality of parallel to the drive shaft 9 extending blades 12 are arranged on a circle.

Das Trägerteil 2 weist im Bereich des Gitters 5 einen, ebenen mittleren Teil 10 und einen wenigstens annähernd kegelstumpfartigen äußeren Bereich 11 auf, der sich an den mittleren Teil 10 anschließt. Durch den kegelstumpfartigen äußeren Bereich 11 des Trägerteiles 2 wird zusätzlich der Strömungswiderstand bzw. ein Druckabfall beim Ansaugen von Luft durch das Lüfterrad 4 im äußeren Bereich 11 des Trägerteiles 2 minimiert, da die im äußeren Bereich 11 des Trägerteiles 2 angesaugte Luft direkt in Richtung des Lüfterrades 4 strömt und von den gekrümmten Stegen 6 in radialer Richtung auf das Lüfterrad 4 bzw. dessen Schaufeln 12 zugeführt wird.The carrier part 2 has, in the region of the grid 5, a flat central part 10 and an at least approximately frusto-conical outer region 11, which adjoins the middle part 10. Through the truncated-cone-shaped outer region 11 In addition, the flow resistance or a pressure drop during the suction of air through the fan 4 in the outer region 11 of the support member 2 is minimized because the sucked in the outer region 11 of the support member 2 air flows directly in the direction of the fan 4 and the curved Webs 6 in the radial direction on the fan 4 and the blades 12 is supplied.

Die Stege 6 des Gitters 5 sind in Querschnittsrichtung konvex bzw. konkav ausgebildet, so dass angesaugte Luft an den Stegen 6 von einer im mittleren Teil 10 im wesentlichen senkrechten und im äußeren Bereich 11 vornehmlich radialen Anströmung auf das Gitter 5 zu in eine radiale Strömungsrichtung zu dem Lüfterrad 4 umgelenkt wird (siehe Pfeile 19). Durch die Befestigung bzw. Anordnung des Motors 3 im Anströmbereich des Lüfterrades 4 und in das Lüfterrad 4 eingetaucht, wird der für die Umlenkung der angesaugten Luft benötigte axiale Bauraum optimal genutzt, so dass die Lüftervorrichtung 1 in axialer Richtung kompakt gebaut ist. Ein weiterer Vorteil dieser Anordnung ist die Integration von Luftleitfunktionen in das Trägerteil 2.The webs 6 of the grating 5 are convex or concave in the cross-sectional direction, so that sucked air at the webs 6 from a substantially vertical in the central part 10 and 11 in the outer region 11 primarily radial flow to the grid 5 in a radial flow direction the fan 4 is deflected (see arrows 19). Dipped by the attachment or arrangement of the motor 3 in the inflow of the fan 4 and in the fan 4, the space required for the deflection of the sucked air axial space is optimally used, so that the fan device 1 is compact in the axial direction. Another advantage of this arrangement is the integration of Luftleitfunktionen in the support part. 2

In Fig. 2 ist eine Draufsicht auf das Trägerteil 2 der Lüftervorrichtung 1 dargestellt. Das Gitter 5 ist zusätzlich zu den als Kreisstegen ausgebildeten Stegen 6 durch sogenannte Radialstege 13 netzartig ausgeführt. Der mittlere Bereich 10 des Trägerteil, an dem der Motor befestigt ist, hat Lüftungsschlitze 16 zur Kühlung des Motors. Der äußerste Bereich 15 des Gitters 5 ist trichterförmig gekrümmt, so dass in Zusammenwirken mit den Kreisstegen 6 und den Radialstege 13 die Luft strömungsgünstig zum Lüfterrad geführt wird, wie dies durch die Pfeile 19 in Fig. 1 und 2 dargestellt ist.FIG. 2 shows a plan view of the carrier part 2 of the fan device 1. The grid 5 is in addition to the webs formed as a circle webs 6 designed by so-called radial webs 13 like a net. The central portion 10 of the support member, to which the motor is attached, has ventilation slots 16 for cooling the engine. The outermost region 15 of the grid 5 is funnel-shaped, so that in cooperation with the circular webs 6 and the radial webs 13, the air is aerodynamically guided to the fan, as shown by the arrows 19 in FIGS. 1 and 2.

Die Radialstege 13 des Trägerteiles 2 sind ebenfalls, wie in Fig. 3 dargestellt, in Querschnittsrichtung derart gekrümmt ausgebildet, dass von dem Lüfterrad 4 angesaugte Luft in Drehrichtung des Lüfterrades 4 umgelenkt und dem Lüfterrad 4 zur Reduzierung eines Strömungswiderstandes zugeführt wird. Damit wird angesaugte Luft von den Kreisstegen 6, dem äußersten Bereich 15 und den Radialstegen 13 dreidimensional vorgerichtet in Drehrichtung des Lüfterrades 4 umgelenkt (Pfeil 19), womit ein Strömungswiderstand auf einfache Art und Weise minimiert wird.The radial webs 13 of the support member 2 are also formed, as shown in Fig. 3, in the cross-sectional direction such curved, that sucked by the fan 4 air in the direction of rotation of the fan 4 and the fan 4 is supplied to reduce a flow resistance. Thus, sucked air is deflected by the circular webs 6, the outermost region 15 and the radial webs 13 three-dimensionally directed in the direction of rotation of the fan wheel 4 (arrow 19), whereby a flow resistance is minimized in a simple manner.

Durch die gekrümmte Ausführung der Kreisstege 6, des äußersten Bereichs 15 und der Radialstege 13 des Trägerteiles 2 wird darüber hinaus eine erhöhte Steifigkeit des Trägerteiles 2 insgesamt erreicht, wodurch eine Verringerung der Wandstärke des Trägerteiles 2 vorgesehen werden kann, die wiederum zu einer kostensenkenden Materialersparnis sowie zu einer Verringerung des Gewichtes des Trägerteiles 2 und zu einer Verringerung des Strömungswiderstands des Trägerteils 2 führt.Due to the curved design of the circular webs 6, the outermost region 15 and the radial webs 13 of the support member 2, an increased rigidity of the Carrier part 2 achieved in total, whereby a reduction in the wall thickness of the support member 2 can be provided, which in turn leads to a cost-saving material savings and to a reduction in the weight of the support member 2 and a reduction of the flow resistance of the support part 2.

Alternativ zur vorstehend dargestellten Ausführung kann die Krümmung der Stege 6, 13 bzw. der Wände 18 der Stege 6, 13 für eine zu den Pfeilen 19 entgegengesetzte Strömungsrichtung ausgelegt werden, wobei die gleichen Vorteile wie vorstehend dargestellt, erzielt werden können.As an alternative to the embodiment described above, the curvature of the webs 6, 13 or the walls 18 of the webs 6, 13 can be designed for a direction opposite to the arrows 19 flow direction, with the same advantages as shown above, can be achieved.

Anstatt den Motor 3 am Trägerteil 2 zu befestigen und das Lüfterrad 4 an der Antriebswelle 9 des Motors 3 zu befestigen, kann auch nur die Welle des Lüfterrads 4 im Trägerteil 2 gelagert werden, wobei das Lüfterrad 4 dann beispielsweise über einen externen Motor und über einen Riementrieb antreibbar ist.Instead of attaching the motor 3 to the support member 2 and to secure the fan 4 to the drive shaft 9 of the motor 3, only the shaft of the fan 4 can be stored in the support member 2, wherein the fan 4 then, for example via an external motor and a Belt drive is driven.

Claims (8)

  1. Fan device (1) for a fume extractor hood with a radial fanwheel (4) mounted at a carrier part (2), wherein the carrier part (2) has openings (17), which are bounded by walls (18) and which are formed by a grill (5), which is constructed by radial webs (13) having the walls (18) and by circular webs (6), wherein the walls (18) of the radial webs (13) are curved in such a manner in flow direction that the air flows in via the openings (17) in shock-free manner and can flow in shock-free manner over to the fanwheel (4) or the air can flow in shock-free manner from the fanwheel (4) to the openings (17) and flow out of the openings (17), characterised in that the circular webs (6) are also curved in cross-section and, in particular, in such a manner that the air to be inducted or flowing out through each opening (17) of the grill (5) is spatially pre-aligned to the radial fanwheel (4) so that in co-operation with the similarly curved radial webs (13) the air in the grill (5) is deflected by the curvature of the walls (18) of the openings (17) three-dimensionally into an at least approximately radial direction of the radial fanwheel (4) and, in particular, into the rotational direction of the radial fanwheel (4) or can flow over from a radial direction of the radial fanwheel (4) to the openings (17) and flow out of the openings (17).
  2. Fan device according to claim 1, characterised in that the grill (5) has an outer region (15) curved in a funnel shape and the inflowing or outflowing air is three-dimensionally pre-aligned by the walls (18) of the webs (6, 13) and the outer region (15).
  3. Fan device according to claim 1 or 2, characterised in that a motor (3), preferably an electric motor, is arranged at the carrier part (2) and that the fanwheel (4) is fastened on a drive output shaft (9) of the motor (3).
  4. Fan device according to one of claims 1 to 3, characterised in that the walls (18) are constructed to be convex or concave in flow direction.
  5. Fan device according to one of claims 1 to 4, characterised in that the walls (18) are formed to be parabolic in flow direction.
  6. Fan device according to one of claims 1 to 5, characterised in that the grill has several radially extending radial webs (13) and at least one circularly formed circular web (6) connecting the radial webs (13) together.
  7. Fan device according to claim 6, characterised in that the circular web (6) is formed to be of hyperboloid shape in cross-section.
  8. Fan device according to one of claims 1 to 7, characterised in that the carrier part (2) in installed position is fastened to an air guide body which surrounds the fanwheel (4) and is provided in a flow discharge region of the fanwheel (4) with a separate outflow opening.
EP02805296A 2001-12-20 2002-11-27 Fan device Expired - Lifetime EP1458982B1 (en)

Applications Claiming Priority (3)

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DE10162919 2001-12-20
DE10162919A DE10162919A1 (en) 2001-12-20 2001-12-20 fan device
PCT/EP2002/013397 WO2003054395A1 (en) 2001-12-20 2002-11-27 Fan device

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EP1458982A1 EP1458982A1 (en) 2004-09-22
EP1458982B1 true EP1458982B1 (en) 2007-11-14

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DE (2) DE10162919A1 (en)
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DE50211232D1 (en) 2007-12-27
ATE378515T1 (en) 2007-11-15
ES2295460T3 (en) 2008-04-16
BR0215147A (en) 2004-10-19
EP1458982A1 (en) 2004-09-22
DE10162919A1 (en) 2003-07-03
WO2003054395A1 (en) 2003-07-03

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