EP0780579A1 - Radial blower, particularly for heating- and airconditioning systems of motor vehicles - Google Patents

Radial blower, particularly for heating- and airconditioning systems of motor vehicles Download PDF

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Publication number
EP0780579A1
EP0780579A1 EP96119730A EP96119730A EP0780579A1 EP 0780579 A1 EP0780579 A1 EP 0780579A1 EP 96119730 A EP96119730 A EP 96119730A EP 96119730 A EP96119730 A EP 96119730A EP 0780579 A1 EP0780579 A1 EP 0780579A1
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EP
European Patent Office
Prior art keywords
electric motor
fan
air
radial
fan blades
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Granted
Application number
EP96119730A
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German (de)
French (fr)
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EP0780579B1 (en
Inventor
Rainer Blumenberg
Heinrich Hillrichs
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Temic Automotive Electric Motors GmbH
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Temic Automotive Electric Motors GmbH
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Publication of EP0780579A1 publication Critical patent/EP0780579A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • 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
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Definitions

  • the invention relates to a radial fan, in particular for heating and air conditioning systems of motor vehicles of the type specified in the preamble of claim 1.
  • the space available in a motor vehicle for the installation of a heating and ventilation device is generally very small, and if the air is to be set in motion with a centrifugal fan, in particular in order to achieve silent operation, a space-saving design is achieved if the Air enters the housing directly from the side opposite the electric motor driving the blower. Cooling the motor is therefore a difficult problem.
  • a radial blower driven by an electric motor with a radial fan is already known, in which a support disk is provided with blower blades pointing axially away from the motor on the radial outer region.
  • the support disk has openings through which the cooling air heated by the electric motor reaches the suction side of the impeller and is mixed with the conveying air and discharged into the spiral space. Since the openings in the support plate enable short-circuit currents between the pressure and suction sides and therefore tend to generate noise, this impeller is less suitable for low-noise operation.
  • the invention has for its object to improve a radial fan of the type mentioned in such a way that noise is reduced and sufficient cooling of the electric motor is achieved. This object is achieved by the invention characterized in patent claim 1.
  • the radial fan according to the invention is characterized by a low-noise operation, but adequate cooling of the electric motor is also always guaranteed. Low-frequency roaring noises are largely avoided by switching off, or at least reducing, short-circuit currents between the pressure and suction sides of the fan wheel.
  • the radial blower meets today's demands for air performance, engine cooling and low noise.
  • the figure shows a radial fan, in particular for heating and air conditioning systems of motor vehicles with a fan wheel 3 driven by an electric motor 1 and a spiral housing 5 surrounding it.
  • a support disk 11 of the fan wheel 3 via the hub 9 attached, which has a plurality of fan blades 13 evenly distributed on the outer circumference.
  • air is conveyed from a suction opening 15 in a cover plate 17 for a pot-shaped housing part 21 of the housing 5 into the spiral space 19 and from there to an outlet opening, not shown.
  • the fan wheel 3 is surrounded by the spiral-shaped housing part 21, which has a dome-like recess 23 on the side opposite the air intake opening 15, in which at least one end 24 of the electric motor 1 is accommodated.
  • the support disk 11 is provided with a recess 25 opposite the dome-like recess 23, which is cup-shaped and serves to receive the other end 27 of the electric motor 1.
  • the support disk 11 is provided with first fan blades 13 pointing axially away from the electric motor 1 on the radial outer region and with second fan blades 31 on the smooth, closed inner surface 29, through which a cooling air flow for cooling the electric motor 1 while generating local pressure differences within the air space surrounding the electric motor 1 33 is branched off essentially circulating from the main air flow into the spiral space 19.
  • These second fan blades 31 are distributed on the upper inner wheel 35 on the inner surface 29 of the support disk 11.
  • the support disk 11 is formed in one piece with the bearing hub 9 of the fan wheel 3, the bearing hub 9 connected to the drive shaft 7 of the electric motor 1 being formed with one end 37 projecting above the inner surface 29 in the bottom 39 of the support disk 11 41 formed stiffening ribs between the free end 37 of the bearing hub 9 and the inner surface 29 of the support plate 11 are arranged in the bottom 39. These third fan blades 41 support the circulation of the cooling air flow through the electric motor 1.
  • the branching of a cooling air flow to the electric motor from the main air flow in the spiral space 19 is produced in that the closed housing part 21 has at least one air supply duct 45 arranged from the spiral space 19 to the bottom 43 of the dome-like recess 23 for supplying cooling air to the electric motor 1.
  • the cooling air flow from the spiral space 19 to the floor 43 runs in the direction of the arrow 47 and then passes in the direction of the arrow 49 through the unlocked electric motor 1 to the Bottom 39 in the support plate 11, from where at least part of the heated cooling air flow is finally pressed in the direction of arrow 51 via the fan blades 31 and 41 into the spiral space 19 against the excess pressure prevailing there.
  • the cooling air conducted and heated by the electric motor 1 into the spiral space 19 is then mixed with the cooling air in the spiral space 19.
  • a circulation of cooling air flows which mix with possibly preheated fresh air, is also generated within the air space 33 due to pressure differences which are generated by the fan blades 31 and 41.
  • the temperature level of the circulating cooling air streams is stabilized by the constant circulation with partial addition of air from the main stream via the air supply duct 45 and, on the other hand, by heat being released to the walls of the dome-like recess 23.
  • the second fan blades 31 z. B triangular shapes on each of which a first leg 53 each parallel to the drive shaft 7 of the electric motor 1 and the other leg 55 are arranged perpendicular to the first leg 53 and in extension to the peripheral edge 57 of the support plate 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The fan has a fan wheel driven by an electric motor (1) and a spiral housing with an air inlet opening into a suction chamber and leading outside from the housing interior. A dome-shaped recess opposite the inlet holds part of the electric motor and is opposite a cup-shaped recess in the fan wheel carrier plate (11) which accepts the other part of the motor. The carrier plate has a first group of fan vanes (13) on the radially outer region and diverging axially from the motor and a second group (31) on the smooth, closed inner surface (29) to deflect the cooling air to form a circulating flow by causing local pressure difference.

Description

Die Erfindung betrifft ein Radialgebläse, insbesondere für Heizungs- und Klimaanlagen von Kraftfahrzeugen der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to a radial fan, in particular for heating and air conditioning systems of motor vehicles of the type specified in the preamble of claim 1.

Der in einem Kraftfahrzeug verfügbare Raum für den Einbau einer Heiz- und Lüftungsvorrichtung ist allgemein sehr klein, und wenn die Luft mit einem Zentrifugalgebläse in Bewegung gesetzt werden soll, insbesondere um ein geräuschloses Arbeiten zu erzielen, wird eine wenig Raum beanspruchende Gestaltung erreicht, wenn die Luft von der dem das Gebläse antreibenden Elektromotor gegenüberliegenden Seite direkt in das Gehäuse eintritt. Die Kühlung des Motors stellt somit ein schwieriges Problem dar.The space available in a motor vehicle for the installation of a heating and ventilation device is generally very small, and if the air is to be set in motion with a centrifugal fan, in particular in order to achieve silent operation, a space-saving design is achieved if the Air enters the housing directly from the side opposite the electric motor driving the blower. Cooling the motor is therefore a difficult problem.

Durch die DE 34 27 565 ist ein durch einen Elektromotor angetriebenes Radialgebläse mit einem Radiallüfter schon bekannt, bei welchem eine Tragscheibe mit am radialen Außenbereich axial vom Motor wegweisende Gebläseflügel vorgesehen ist. Die Tragscheibe weist Durchbrechungen auf, durch welche die durch den Elektromotor erwärmte Kühlluft zur Saugseite des Gebläserades gelangt und mit der Förderluft vermischt und in den Spiralraum abgeleitet wird. Da die Durchbrechungen in der Tragscheibe Kurzschlußströme zwischen Druck- und Saugseite ermöglichen und daher zu Geräuschbildungen neigen, ist dieses Gebläserad für einen geräuscharmen Betrieb weniger geeeignet.From DE 34 27 565 a radial blower driven by an electric motor with a radial fan is already known, in which a support disk is provided with blower blades pointing axially away from the motor on the radial outer region. The support disk has openings through which the cooling air heated by the electric motor reaches the suction side of the impeller and is mixed with the conveying air and discharged into the spiral space. Since the openings in the support plate enable short-circuit currents between the pressure and suction sides and therefore tend to generate noise, this impeller is less suitable for low-noise operation.

Der Erfindung liegt die Aufgabe zugrunde, ein Radialgebläse der eingangs genannten Art derart zu verbessern, daß die Geräuschentwicklung verringert und eine ausreichende Kühlung des Elektromotors erzielt wird. Diese Aufgabe wird durch die im Patenanspruch 1 gekennzeichnete Erfindung gelöst.The invention has for its object to improve a radial fan of the type mentioned in such a way that noise is reduced and sufficient cooling of the electric motor is achieved. This object is achieved by the invention characterized in patent claim 1.

Das erfindungsgemäße Radialgebläse zeichnet sich durch einen geräuscharmen Lauf aus, wobei aber auch eine ausreichende Kühlung des Elektromotors stets gewährleistet wird. Tieffrequente Dröhngeräusche werden weitgehend dadurch vermieden, daß Kurzschlußströme zwischen Druck- und Saugseite des Lüfterrades ausgeschaltet, zumindest aber reduziert werden.The radial fan according to the invention is characterized by a low-noise operation, but adequate cooling of the electric motor is also always guaranteed. Low-frequency roaring noises are largely avoided by switching off, or at least reducing, short-circuit currents between the pressure and suction sides of the fan wheel.

Das Radialgebläse entspricht den heutigen Forderungen an Luftleistung, Motorkühlung und Geräuscharmut.The radial blower meets today's demands for air performance, engine cooling and low noise.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgegenstandes sind den weiteren Unteransprüchen zu entnehmen.Further advantageous refinements of the subject matter of the invention can be found in the further subclaims.

Die Erfindung wird anhand eines Ausführungsbeispieles gemäß der Figur näher beschrieben.The invention is described in more detail using an exemplary embodiment according to the figure.

Die Figur zeigt ein Radialgebläse, insbesondere für Heizungs- und Klimaanlagen von Kraftfahrzeugen mit einem von einem Elektromotor 1 angetriebenen Lüfterrad 3 und einem dieses umgebenden, spiralförmigen Gehäuse 5. Auf dem Wellenende 7 des Elektromotors 1 ist über die Nabe 9 eine Tragscheibe 11 des Lüfterrades 3 befestigt, welches am äußeren Umfang gleichmäßig verteilt eine Vielzahl von Lüfterflügeln 13 aufweist. Durch diese Lüfterflügel 13 wird Luft von einer Ansaugöffnung 15 in einer Abdeckplatte 17 für ein topfförmiges Gehäuseteil 21 des Gehäuses 5 in den Spiralraum 19 gefördert und von dort zu einer nicht dargestellten Austrittsöffnung geleitet.The figure shows a radial fan, in particular for heating and air conditioning systems of motor vehicles with a fan wheel 3 driven by an electric motor 1 and a spiral housing 5 surrounding it. On the shaft end 7 of the electric motor 1 there is a support disk 11 of the fan wheel 3 via the hub 9 attached, which has a plurality of fan blades 13 evenly distributed on the outer circumference. Through these fan blades 13, air is conveyed from a suction opening 15 in a cover plate 17 for a pot-shaped housing part 21 of the housing 5 into the spiral space 19 and from there to an outlet opening, not shown.

Das Lüfterrad 3 wird von dem spiralförmig ausgebildeten Gehäuseteil 21 umgeben, welches auf der der Luftansaugöffnung 15 gegenüberliegenden Seite eine domartige Vertiefung 23 aufweist, in welcher mindestens ein Ende 24 des Elektromotors 1 untergebracht ist. Die Tragscheibe 11 ist mit einer der domartigen Vertiefung 23 gegenüberliegenden Vertiefung 25 versehen, welche schalenförmig ausgebildet ist und zur Aufnahme des anderen Endes 27 des Elektromotors 1 dient.The fan wheel 3 is surrounded by the spiral-shaped housing part 21, which has a dome-like recess 23 on the side opposite the air intake opening 15, in which at least one end 24 of the electric motor 1 is accommodated. The support disk 11 is provided with a recess 25 opposite the dome-like recess 23, which is cup-shaped and serves to receive the other end 27 of the electric motor 1.

Die Tragscheibe 11 ist mit am radialen Außenbereich axial vom Elektromotor 1 wegweisende erste Lüfterflügel 13 und auf der glattausgebildeten, geschlossenen Innenoberfläche 29 mit zweiten Lüfterflügeln 31 versehen, durch welche ein Kühlluftstrom zur Kühlung des Elektromotors 1 unter Erzeugung örtlicher Druckunterschiede innerhalb des den Elektromotor 1 umgebenden Luftraumes 33 im wesentlichen zirkulierend vom Haupftluftstrom in den Spiralraum 19 abgezweigt wird. Diese zweiten Lüfterflügel 31 sind an dem oberen Innenrad 35 auf der Innenoberfläche 29 der Tragscheibe 11 verteilt angeordnet.The support disk 11 is provided with first fan blades 13 pointing axially away from the electric motor 1 on the radial outer region and with second fan blades 31 on the smooth, closed inner surface 29, through which a cooling air flow for cooling the electric motor 1 while generating local pressure differences within the air space surrounding the electric motor 1 33 is branched off essentially circulating from the main air flow into the spiral space 19. These second fan blades 31 are distributed on the upper inner wheel 35 on the inner surface 29 of the support disk 11.

Die Tragscheibe 11 ist mit der Lagernabe 9 des Lüfterrades 3 einstückig ausgebildet, wobei die mit der Antriebswelle 7 des Elektromotors 1 verbundene Lagernabe 9 mit einem Ende 37 gegenüber der Innenoberfläche 29 im Boden 39 der Tragscheibe 11 vorstehend ausgebildet Hierdurch wird ermöglicht, daß als dritte Lüfterflügel 41 ausgebildete Versteifungsrippen zwischen dem freien Ende 37 der Lagernabe 9 und der Innenoberfläche 29 der Tragscheibe 11 im Boden 39 angeordnet sind. Diese dritten Lüfterflügel 41 unterstützen die Zirkulation des Kühlluftstromes durch den Elektromotor 1.The support disk 11 is formed in one piece with the bearing hub 9 of the fan wheel 3, the bearing hub 9 connected to the drive shaft 7 of the electric motor 1 being formed with one end 37 projecting above the inner surface 29 in the bottom 39 of the support disk 11 41 formed stiffening ribs between the free end 37 of the bearing hub 9 and the inner surface 29 of the support plate 11 are arranged in the bottom 39. These third fan blades 41 support the circulation of the cooling air flow through the electric motor 1.

Das Abzweigen eines Kühlluftstromes zum Elektromotor von dem Hauptluftstrom in dem Spiralraum 19 wird dadurch erzeugt, daß das geschlossene Gehäuseteil 21 mindestens einen von dem Spiralraum 19 bis zum Boden 43 der domartigen Vertiefung 23 angeordneten Luftzuführungskanal 45 zum Zuführen von Kühlluft zu dem Elektromotor 1 aufweist.The branching of a cooling air flow to the electric motor from the main air flow in the spiral space 19 is produced in that the closed housing part 21 has at least one air supply duct 45 arranged from the spiral space 19 to the bottom 43 of the dome-like recess 23 for supplying cooling air to the electric motor 1.

Der Kühlluftstrom aus dem Spiralraum 19 zu dem Boden 43 verläuft in Pfeilrichtung 47 und gelangt dann in Pfeilrichtung 49 durch den nicht geschlossenen Elektromotor 1 bis zu dem Boden 39 in der Tragscheibe 11, von wo zumindest ein Teil des erwärmten Kühlluftstromes schließlich in Pfeilrichtung 51 über die Lüfterflügel 31 und 41 in den Spiralraum 19 gegen den dort herrschenden Überdurck gedrückt wird. Die durch den Elektromotor 1 in den Spiralraum 19 geleitete und erwärmte Kühlluft wird hierbei dann mit der Kühlluft in dem Spiralraum 19 vermischt.The cooling air flow from the spiral space 19 to the floor 43 runs in the direction of the arrow 47 and then passes in the direction of the arrow 49 through the unlocked electric motor 1 to the Bottom 39 in the support plate 11, from where at least part of the heated cooling air flow is finally pressed in the direction of arrow 51 via the fan blades 31 and 41 into the spiral space 19 against the excess pressure prevailing there. The cooling air conducted and heated by the electric motor 1 into the spiral space 19 is then mixed with the cooling air in the spiral space 19.

Andererseits wird auch innerhalb des Luftraumes 33 aufgrund von Druckunterschieden, welche durch die Lüfterflügel 31 und 41 erzeugt werden,eine Zirkulation von Kühlluftströmen erzeugt, welche sich mit eventuell vorgeheizter Frischluft durchmischen. Das Temperaturniveau der zirkulierenden Kühlluftströme stabilisiert sich durch das ständige Umwälzen mit teilweise Beigabe von Luft aus dem Hauptstrom über den Luftzuführungskanal 45 und andererseits durch Wärmeabgabe an die Wände der domartigen Vertiefung 23.On the other hand, a circulation of cooling air flows, which mix with possibly preheated fresh air, is also generated within the air space 33 due to pressure differences which are generated by the fan blades 31 and 41. The temperature level of the circulating cooling air streams is stabilized by the constant circulation with partial addition of air from the main stream via the air supply duct 45 and, on the other hand, by heat being released to the walls of the dome-like recess 23.

In vorteilhafter Ausgestaltung weisen die zweiten Lüfterflügel 31 z. B. dreieckförmige Formen auf von denen je ein erster Schenkel 53 jeweils parallel zur Antriebswelle 7 des Elektromotors 1 und der andere Schenkel 55 senkrecht zu dem ersten Schenkel 53 und in Verlängerung zu dem umlaufenden Rand 57 der Tragscheibe 11 ausgerichtet angeordnet sind.In an advantageous embodiment, the second fan blades 31 z. B. triangular shapes on each of which a first leg 53 each parallel to the drive shaft 7 of the electric motor 1 and the other leg 55 are arranged perpendicular to the first leg 53 and in extension to the peripheral edge 57 of the support plate 11.

Claims (6)

Radialgebläse, insbesondere für Heizungs- und Klimaanlagen von Kraftfahrzeugen,mit einem durch einen Elektromotor angetriebenen Lüfterrad und einem dieses umgebenden, spiralförmigen Gehäuse, welches einen in einem Saugraum mündende Lufteinlaßöffnung und eine vom Innenraum des Gehäuses nach außen führenden Luftauslaßöffnung besitzt, wobei das der Luftansaugöffnung gegenüberliegende geschlossene Gehäuseteil des Gehäuses eine domartige Vertiefung aufweist, in der mindestens ein Teil des Elektromotors untergebracht ist, und wobei dieser domartigen Vertiefung eine schalenförmig ausgebildete Vertiefung der Tragscheibe des Lüfterrades zur Aufnahme des anderen Teiles des Elektromotors gegenüberliegt, dadurch gekennzeichnet, daß die Tragscheibe (11)am radialen Außenbereich axial vom Elektromotor (1) wegweisende erste Lüfterflügel (13) und auf der glatt ausgebildeten, geschlossenen Innenoberfläche (29) zweite Lüfterflügel (31) aufweist, durch welche ein Kühlluftstrom zur Kühlung des Elektromotors (1) unter Erzeugung örtlicher Druckunterschiede innerhalb des den Elektromotor (1) unmittelbar umgebenden Luftraumes (33) im wesentlichen zirkulierend vom Hauptluftstrom in dem Spiralraum (19) abgezweigt wird.Radial blower, in particular for heating and air conditioning systems of motor vehicles, with a fan wheel driven by an electric motor and a spiral housing surrounding it, which has an air inlet opening opening into a suction chamber and an air outlet opening leading outwards from the interior of the housing, the one opposite the air suction opening closed housing part of the housing has a dome-like recess in which at least part of the electric motor is accommodated, and this dome-like recess is opposite a cup-shaped recess of the support disk of the fan wheel for receiving the other part of the electric motor, characterized in that the support disk (11) on the radial outer area axially pointing away from the electric motor (1) first fan blades (13) and on the smooth, closed inner surface (29) has second fan blades (31) through which a cooling air flow to cool the electric motor (1) while generating local pressure differences within the air space (33) immediately surrounding the electric motor (1), essentially in a circulating manner from the main air flow in the spiral space (19). Radialgebläse nach Anspruch 1, dadurch gekennzeichnet, daß die zweiten Lüfterflügel (31) an dem oberen Innenrand (35) auf der Innenoberfläche (29) der Tragscheibe (11) verteilt angeordnet sind.Radial fan according to claim 1, characterized in that the second fan blades (31) are arranged distributed on the upper inner edge (35) on the inner surface (29) of the supporting disc (11). Radialgebläse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Tragscheibe (11) mit der Lagernabe (9) des Lüfterrades (3) einstückig ausgebildet ist, wobei die mit der Antriebswelle (7) des Elektromotors (1) verbindende Lagernabe (9) mit einem Ende (37) gegenüber der Innenoberfläche (29) des Bodens (39) der Tragscheibe (11) vorstehend ausgebildet ist.Radial blower according to claim 1 or 2, characterized in that the support disc (11) is integrally formed with the bearing hub (9) of the fan wheel (3), the bearing hub (9) connecting to the drive shaft (7) of the electric motor (1) one end (37) opposite the inner surface (29) of the bottom (39) of the support disk (11) is formed protruding. Radialgebläse nach A3, dadurch gekennzeichnet, daß als dritte Lüfterflügel (41) ausgebildete Versteifungsrippen zwischen dem freien Ende (37) der Lagernabe (9) und der Innenoberfläche (29) der Tragscheibe (11) im Boden (39) angeordnet sind.Radial fan according to A3, characterized in that stiffening ribs designed as third fan blades (41) are arranged in the base (39) between the free end (37) of the bearing hub (9) and the inner surface (29) of the support disk (11). Radialgebläse nach einem der vorhergehendenAnsprüche, dadurch gekennzeichnet, daß das geschlossene Gehäuseteil (21) mindestens einen von dem Spiralraum (19) bis zum Boden (43) der domartigen Vertiefung (23) angeordnete Luftzuführungskanal (45) zum Zuführen von Kühlluft zu dem Elektromotor (1) aufweist.Radial fan according to one of the preceding claims, characterized in that the closed housing part (21) at least one of the spiral space (19) to the bottom (43) of the dome-like recess (23) arranged air supply channel (45) for supplying cooling air to the electric motor (1). Radialgebläse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die auf der Innenoberfläche (29) angeordneten zweiten Lüfterflügel (31) dreieckförmige Formen aufweisen, von denen je ein erster Schenkel (53) jeweils parallel zur Antriebswelle (7) des Elektromotors (1) und der andere Schenkel (55) senkrecht zu dem ersten Schenkel (53) und in Verlängerung zu dem umlaufenden Rand (57) der Tragscheibe ( ) ausgerichtet angeordnet sind.Radial fan according to one of the preceding claims, characterized in that the second fan blades (31) arranged on the inner surface (29) have triangular shapes, of which a first leg (53) each parallel to the drive shaft (7) of the electric motor (1) and the other leg (55) is arranged perpendicular to the first leg (53) and in an extension to the circumferential edge (57) of the supporting disc ().
EP96119730A 1995-12-20 1996-12-10 Radial blower, particularly for heating- and airconditioning systems of motor vehicles Expired - Lifetime EP0780579B1 (en)

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Application Number Priority Date Filing Date Title
DE19547674A DE19547674A1 (en) 1995-12-20 1995-12-20 Radial blowers, in particular for heating and air conditioning systems in motor vehicles
DE19547674 1995-12-20

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EP0780579A1 true EP0780579A1 (en) 1997-06-25
EP0780579B1 EP0780579B1 (en) 2002-02-06

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US6074181A (en) * 1998-07-09 2000-06-13 Ff Seeley Nominees Pty. Ltd. Shroud for fan motor cooling
FR2789447A1 (en) * 1999-02-10 2000-08-11 Valeo Climatisation HEATING AND / OR AIR CONDITIONING DEVICE INCLUDING A CENTRIFUGAL PULSER
WO2000054996A1 (en) * 1999-03-13 2000-09-21 Dong Jin Motor Co., Ltd Air guiding configuration for refrigeration of motor in air symmetrize device of car
WO2003038281A1 (en) * 2001-11-02 2003-05-08 Valeo Climatisation Motor fan system
EP2102506A1 (en) * 2006-12-29 2009-09-23 LG Electronics Inc. Air conditioner fan
FR2961971A1 (en) * 2010-06-24 2011-12-30 Valeo Systemes Thermiques MOTOR SUPPORT WITH MOVEMENT LIMITATION DEVICE
CN108297485A (en) * 2018-02-28 2018-07-20 海宁市冲达机械设计有限公司 A kind of twin flue of paper cup making machine blows cup device

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DE19909507C1 (en) 1999-03-04 2000-11-16 Temic Auto Electr Motors Gmbh Radial blowers, especially for heating and air conditioning systems
DE10346187A1 (en) * 2003-10-02 2005-04-21 Behr Gmbh & Co Kg fan
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US6074181A (en) * 1998-07-09 2000-06-13 Ff Seeley Nominees Pty. Ltd. Shroud for fan motor cooling
FR2789447A1 (en) * 1999-02-10 2000-08-11 Valeo Climatisation HEATING AND / OR AIR CONDITIONING DEVICE INCLUDING A CENTRIFUGAL PULSER
WO2000054996A1 (en) * 1999-03-13 2000-09-21 Dong Jin Motor Co., Ltd Air guiding configuration for refrigeration of motor in air symmetrize device of car
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FR2831928A1 (en) * 2001-11-02 2003-05-09 Valeo Climatisation MOTOR-FAN GROUP WITH INTEGRATED COOLING CHANNELS
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FR2961971A1 (en) * 2010-06-24 2011-12-30 Valeo Systemes Thermiques MOTOR SUPPORT WITH MOVEMENT LIMITATION DEVICE
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CN108297485A (en) * 2018-02-28 2018-07-20 海宁市冲达机械设计有限公司 A kind of twin flue of paper cup making machine blows cup device

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DE59608703D1 (en) 2002-03-21
EP0780579B1 (en) 2002-02-06
DE19547674A1 (en) 1997-06-26

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