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EP2080910B1 - Fan especially for vehicle ventilation - Google Patents

Fan especially for vehicle ventilation Download PDF

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Publication number
EP2080910B1
EP2080910B1 EP08020487.8A EP08020487A EP2080910B1 EP 2080910 B1 EP2080910 B1 EP 2080910B1 EP 08020487 A EP08020487 A EP 08020487A EP 2080910 B1 EP2080910 B1 EP 2080910B1
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EP
European Patent Office
Prior art keywords
intake
impeller
fan
axis
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.)
Ceased
Application number
EP08020487.8A
Other languages
German (de)
French (fr)
Other versions
EP2080910A2 (en
EP2080910A3 (en
Inventor
Matthias Lang
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Mahle Behr GmbH and Co KG
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Publication date
Application filed by Mahle Behr GmbH and Co KG filed Critical Mahle Behr GmbH and Co KG
Publication of EP2080910A2 publication Critical patent/EP2080910A2/en
Publication of EP2080910A3 publication Critical patent/EP2080910A3/en
Application granted granted Critical
Publication of EP2080910B1 publication Critical patent/EP2080910B1/en
Ceased 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
    • F04D29/40—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
    • F04D29/4226—Fan casings
    • 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
    • F04D29/4226—Fan casings
    • F04D29/424—Double entry casings

Definitions

  • the invention relates to a fan, in particular for the fresh and / or Um Kunststoffansaugung a vehicle air conditioning system, according to the preamble of claim 1.
  • the DE 1 428 085 A1 discloses a tumbler fan with a housing which is substantially open on one side and sucks air from there.
  • the impeller runs partially free, ie without a cover.
  • an outer guide surface is provided which comprises approximately half of the impeller circumference.
  • the air intake takes place via the open area of the blower in both the radial and axial directions.
  • blower arrangement for the fresh and / or Um Kunststoffansaugung a vehicle air conditioning system known
  • said blower arrangement comprises two opposing intake ports, which are arranged in a direction offset in the direction of the axis of rotation of the impeller to the outlet opening.
  • Such a fan leaves nothing to be desired.
  • the invention relates to a fan, in particular for the fresh and / or Um Kunststoffansaugung for a vehicle air conditioner, with a blower housing, an impeller with a rotation axis and the impeller driving fan motor, wherein the fan housing at least one suction port for an intake port and an outlet port for an outlet channel having.
  • the surface normal to the intake opening of the intake duct is skewed with respect to the axis of rotation of the impeller and the intake opening is arranged in a plane offset in the direction of the axis of rotation of the impeller to the outlet opening.
  • the lateral influx of air causes a pre-whirl and thus improves the inflow to the impeller or impeller blading. Speed peaks when flowing around the Zargenrandes by strong deflection can be avoided, resulting in a noise reduction.
  • the surface normal to the suction opening is arranged parallel to a plane in which the axis of rotation of the impeller is located, wherein the central longitudinal axis of the intake duct is arranged in particular approximately tangentially to the preferably circular inlet opening to the impeller.
  • a plane in which a suction port is located preferably includes the axis of rotation of the impeller.
  • the intake channel in a plane which extends perpendicular to the axis of rotation of the impeller has a width which corresponds at most to the width of the inlet opening or, in the case of a circular opening, to the diameter of the inlet opening to the impeller.
  • the blower motor is disposed on the opposite side of the impeller with respect to the intake passage (s).
  • the intake passage (s) There are two intake ducts, in particular a fresh air and a recirculating air duct, provided so that an intake from two directions can be realized.
  • the suction openings are arranged on opposite sides of the axis of rotation of the impeller and extend in a plane.
  • the intake ports are formed in a Zuströmgephaseuse, wherein the Zuströmgephaseuse preferably connects in the axial direction of the axis of rotation of the impeller to the fan housing.
  • the inflow housing and the blower housing are formed as separate components, wherein the inflow housing is an attachment or stem to the blower housing.
  • the intake ducts are arranged uniformly over the circumference of an inlet opening to the impeller, wherein the two intake passages are located diagonally opposite each other, wherein the central longitudinal axes of the two intake passages are arranged parallel to one another.
  • blower is preferably used in a vehicle air conditioner, however, the blower may also be used, for example, for a pure heating or ventilation system of a vehicle. Likewise, the blower can also be used in the chemical industry for the promotion of gases or in the ventilation technology.
  • a blower 1 of a vehicle air conditioning system 2 has an impeller 4 arranged in a blower housing 3 and a blower motor 5.
  • the blower 1 sucks controlled via the flaps (not shown) air from the environment (fresh air) via a fresh air duct 6a and air from the vehicle interior (circulating air) via a circulating air duct 6b.
  • the two air ducts will hereinafter also be referred to as intake air ducts.
  • the intake air ducts 6a, 6b are formed in a Zuströmgephaseuse 22 which is connected as an attachment to the fan housing 3. In the parting plane between the Zuströmgepatuse 22 and blower housing 3, the actual inlet opening 23 of the blower is.
  • the regulation of the temperature is carried out in a conventional manner by means of temperature mixing flaps 12, which distribute the cold, coming from the evaporator 10 air flow to the radiator 11 and bypasses 13.
  • the thus different tempered partial air streams are mixed in the mixing chamber 14 arranged below and fed to the various areas of the vehicle interior via flap-controlled outlet openings and air ducts 15.
  • the embodiment of the air conditioner 2 may be provided deviating from the embodiment in any conventional manner.
  • blower 1 For the description of the blower 1 is hereinafter referred to the Figures 1 and 2 Reference is made, for better clarity in the drawing, the figures are interconnected by dashed lines shown gravity lines.
  • the flow patterns of the air are at the entrances and exits from Fig. 2 and at the entrance of the fresh air channel 6a of Fig. 1 illustrated by arrows.
  • Fig. 1 how out Fig. 1 can be seen, the fan housing on three stages, in the uppermost stage, the Zuströmgepatuse 22, the fresh and the recirculating air duct 6a, 6b open and the air flow is slightly deflected. In the second, middle stage, the actual volute casing of the blower 1 together with the impeller 4 and the outlet (outlet air duct 7) is arranged. Below this, the blower motor 5 is arranged in the third stage.
  • the flow is in this case in the middle perpendicular to the radial direction, the center of the air channels 6 is clearly offset with respect to the impeller 4 to the outside.
  • the impeller 4 closest to the wall is slightly offset to the outside.
  • the inlet of the air to be conveyed into the corresponding intake ducts 6a, 6b takes place through the associated intake openings 20a, 20b, wherein in the present case the surface normals are arranged on these intake openings 20a, 20b parallel to one another and perpendicular to the rotor axis.
  • these surface normals are shown as dash-dotted lines and perpendicular to the respective intake opening 20a, 20b and extending through the center of area thereof.
  • the intake openings lie in a common plane, in which the axis of the impeller 4 is located.
  • the surface normal through the outlet opening 21 is substantially perpendicular to the surface normals of the suction openings 20a, 20b and to the axis of the impeller 4.
  • the sum of the cross section of the intake openings 20a, 20b which in a plane E (see Fig. 2 ), according to the present embodiment corresponds approximately to the cross-sectional area of the impeller in the corresponding plane E, in which also lies the axis of rotation, or substantially the cross section of the inlet opening 23.
  • the two intake air ducts 6 spiral the sucked air to the impeller 4, wherein It passes through the above-arranged circular inlet opening 23 - also referred to as a frame opening - from the intake air ducts 6a, 6b to the impeller 4.
  • the spiral-shaped configuration of the intake air ducts 6a, 6b generates a pre-whirl which, superimposed with a relatively small linear component, is continued through the door opening and improves the inflow to the impeller blading.
  • the air does not move directly to the Zargenö réelle 23, but flows - seen with respect to the center of the intake air duct 6 - tangentially thereto, wherein a total of one skew arrangement of the axis of rotation of the impeller 4 (center of the frame opening) and the surface normal on the suction port 21a, 21b of an intake passage 6 is present.
  • Such a configuration results in a vortex-like rotational movement into the frame opening.
  • an air blower is provided, but a corresponding configuration for other fluids, such as. Gases, applicable and also not necessarily limited to air conditioning.
  • a blower is shown with an alternative arrangement of the suction ports 20a, 20b to each other, which is not part of the invention.
  • the reference signs correspond insofar as they relate to functionally equivalent components, the reference numerals which have already been used for the first embodiment.
  • the fan housing has three stages, wherein in the uppermost stage, the Zuströmgepatuse 22, the fresh and the recirculating air duct 6a, 6b open and the air flow is slightly deflected.
  • the suction openings 20a, 20b are no longer arranged in a common plane, but inclined at an angle of about 80 ° to each other.
  • This also applies to the corresponding surface normals, which in Fig. 5 again shown as dash-dotted lines.
  • the suction port 20a formed on the left side is opposed to the suction port 20b on the right side in a plane offset from the rotation axis.
  • the axis of rotation of the impeller 4 is also parallel to this plane.

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

Description

Die Erfindung betrifft ein Gebläse, insbesondere für die Frisch- und/oder Umluftansaugung einer Fahrzeugklimaanlage, gemäß dem Oberbegriff des Anspruches 1.The invention relates to a fan, in particular for the fresh and / or Umluftansaugung a vehicle air conditioning system, according to the preamble of claim 1.

Bei herkömmlichen Gebläsen mit einer Ansaugung von Frisch- und/oder Umluft wird die Luft oft in radialer Richtung, d.h. senkrecht zur Drehachse des Gebläsemotors, angesaugt.In conventional blowers with fresh and / or circulating air intake, the air is often drawn in the radial direction, i. perpendicular to the axis of rotation of the fan motor, sucked.

Die DE 1 428 085 A1 offenbart ein Trommelläufer-Gebläse mit einem Gehäuse, welches im Wesentlichen einseitig offen ist und von dort her Luft ansaugt. Das Laufrad läuft bereichsweise frei, d.h. ohne eine Abdeckung. Hierbei ist eine äußere Leitfläche vorgesehen, welche etwa die Hälfte des Laufradumfangs umfasst. Die Luftansaugung erfolgt über den offenen Bereich des Gebläses sowohl in radialer als auch axialer Richtung.The DE 1 428 085 A1 discloses a tumbler fan with a housing which is substantially open on one side and sucks air from there. The impeller runs partially free, ie without a cover. In this case, an outer guide surface is provided which comprises approximately half of the impeller circumference. The air intake takes place via the open area of the blower in both the radial and axial directions.

Ferner ist aus der DE 10 2006 019 328 A1 eine Gebläseanordnung für die Frisch- und/oder Umluftansaugung einer Fahrzeugklimaanlage bekannt, wobei diese Gebläseanordnung zwei einander gegenüber liegende Ansaugkanäle aufweist, die in einer in Richtung der Drehachse des Laufrads versetzten Ebene zur Austrittsöffnung angeordnet sind. Ein derartiges Gebläse lässt noch Wünsche offen.Furthermore, from the DE 10 2006 019 328 A1 a blower arrangement for the fresh and / or Umluftansaugung a vehicle air conditioning system known, said blower arrangement comprises two opposing intake ports, which are arranged in a direction offset in the direction of the axis of rotation of the impeller to the outlet opening. Such a fan leaves nothing to be desired.

Es ist Aufgabe der Erfindung, ein verbessertes Gebläse zur Verfügung zu stellen.It is an object of the invention to provide an improved blower available.

Diese Aufgabe wird gelöst durch ein Gebläse mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche.This object is achieved by a blower with the features of claim 1. Advantageous embodiments are the subject of the dependent claims.

Die Erfindung betrifft ein Gebläse, insbesondere für die Frisch- und/oder Umluftansaugung für eine Fahrzeugklimaanlage, mit einem Gebläsegehäuse, einem Laufrad mit einer Drehachse und einem das Laufrad antreibenden Gebläsemotor, wobei das Gebläsegehäuse mindestens eine Ansaugöffnung für einen Ansaugkanal und eine Austrittsöffnung für einen Austrittskanal aufweist. Hierbei ist die Flächennormale auf die Ansaugöffnung des Ansaugkanals windschief bezüglich der Drehachse des Laufrades und die Ansaugöffnung in einer in Richtung der Drehachse des Laufrads versetzten Ebene zur Austrittsöffnung angeordnet. Das seitliche Anströmen der Luft bewirkt einen Vordrall und verbessert so die Zuströmung zum Laufrad bzw. zur Laufradbeschaufelung. Geschwindigkeitsspitzen beim Umströmen des Zargenrandes durch starke Umlenkung können vermieden werden, wodurch sich eine Geräuschreduzierung ergibt.The invention relates to a fan, in particular for the fresh and / or Umluftansaugung for a vehicle air conditioner, with a blower housing, an impeller with a rotation axis and the impeller driving fan motor, wherein the fan housing at least one suction port for an intake port and an outlet port for an outlet channel having. In this case, the surface normal to the intake opening of the intake duct is skewed with respect to the axis of rotation of the impeller and the intake opening is arranged in a plane offset in the direction of the axis of rotation of the impeller to the outlet opening. The lateral influx of air causes a pre-whirl and thus improves the inflow to the impeller or impeller blading. Speed peaks when flowing around the Zargenrandes by strong deflection can be avoided, resulting in a noise reduction.

Bevorzugt ist die Flächennormale auf die Ansaugöffnung parallel zu einer Ebene angeordnet, in welcher die Drehachse des Laufrads liegt, wobei die Mittellängsachse des Ansaugkanals insbesondere etwa tangential zur vorzugsweise kreisrunden Eintrittsöffnung zum Laufrad angeordnet ist. Durch ein tangentiales Anströmen bildet sich ein Wirbel aus, welcher sich durch die Eintrittsöffnung in Richtung Laufrad erstreckt, wodurch sich eine verbesserte Anströmung zum Laufrad ergibt und Strömungsgeräusche verringert werden können.Preferably, the surface normal to the suction opening is arranged parallel to a plane in which the axis of rotation of the impeller is located, wherein the central longitudinal axis of the intake duct is arranged in particular approximately tangentially to the preferably circular inlet opening to the impeller. By a tangential influx, a vortex forms, which extends through the inlet opening in the direction of the impeller, resulting in an improved flow to the impeller and flow noise can be reduced.

Eine Ebene, in welcher eine Ansaugöffnung liegt, schließt bevorzugt die Drehachse des Laufrades mit ein. Alternativ oder im Falle mehrerer Ansaugöffnungen, ist eine solche Ebene, in der eine Ansaugöffnung liegt bevorzugt auch parallel versetzt zur Drehachse des Laufrades ausgebildet.A plane in which a suction port is located preferably includes the axis of rotation of the impeller. Alternatively, or in the case of a plurality of suction openings, such a plane in which a suction opening is preferably also formed parallel offset from the axis of rotation of the impeller.

Insbesondere bevorzugt weist der Ansaugkanal in einer Ebene, die sich senkrecht zur Drehachse des Laufrades erstreckt, eine Breite auf, welche maximal der Breite der Eintrittsöffnung oder für den Fall einer kreisrunden Öffnung dem Durchmesser der Eintrittsöffnung zum Laufrad entspricht.Particularly preferably, the intake channel in a plane which extends perpendicular to the axis of rotation of the impeller has a width which corresponds at most to the width of the inlet opening or, in the case of a circular opening, to the diameter of the inlet opening to the impeller.

Der Gebläsemotor ist auf der entgegengesetzten Seite des Laufrads in Bezug auf den oder die Ansaugkanäle angeordnet. Es sind zwei Ansaugkanäle, insbesondere ein Frischluft- und ein Umluftkanal, vorgesehen, so dass eine Ansaugung aus zwei Richtungen realisiert werden kann. Die Ansaugöffnungen sind auf einander gegenüberliegenden Seiten der Drehachse des Laufrades angeordnet und verlaufen in einer Ebene.The blower motor is disposed on the opposite side of the impeller with respect to the intake passage (s). There are two intake ducts, in particular a fresh air and a recirculating air duct, provided so that an intake from two directions can be realized. The suction openings are arranged on opposite sides of the axis of rotation of the impeller and extend in a plane.

Zweckmäßigerweise sind die Ansaugkanäle in einem Zuströmgehäuse ausgebildet, wobei das Zuströmgehäuse bevorzugt in axialer Richtung der Drehachse des Laufrads an das Gebläsegehäuse anschließt. Insbesondere sind das Zuströmgehäuse und das Gebläsegehäuse als separate Bauteile ausgebildet, wobei das Zuströmgehäuse einen Aufsatz oder Vorbau zum Gebläsegehäuse darstellt.Conveniently, the intake ports are formed in a Zuströmgehäuse, wherein the Zuströmgehäuse preferably connects in the axial direction of the axis of rotation of the impeller to the fan housing. In particular, the inflow housing and the blower housing are formed as separate components, wherein the inflow housing is an attachment or stem to the blower housing.

Die Ansaugkanäle sind gleichmäßig über den Umfang einer Eintrittöffnung zum Laufrad angeordnet, wobei die zwei Ansaugkanäle einander diagonal gegenüber liegen, wobei die Mittellängsachsen der beiden Ansaugkanäle parallel zueinander angeordnet sind.The intake ducts are arranged uniformly over the circumference of an inlet opening to the impeller, wherein the two intake passages are located diagonally opposite each other, wherein the central longitudinal axes of the two intake passages are arranged parallel to one another.

Ein derartiges Gebläse wird vorzugsweise in einer Fahrzeug-Klimaanlage verwendet, jedoch kann das Gebläse auch beispielsweise für ein reines Heizungs- oder Belüftungssystem eines Fahrzeugs verwendet werden. Ebenso kann das Gebläse auch in der chemischen Industrie zur Förderung von Gasen oder in der Raumlufttechnik verwendet werden.Such a blower is preferably used in a vehicle air conditioner, however, the blower may also be used, for example, for a pure heating or ventilation system of a vehicle. Likewise, the blower can also be used in the chemical industry for the promotion of gases or in the ventilation technology.

Im Folgenden wird die Erfindung anhand von einem Ausführungsbeispiel unter Bezugnahme auf die Zeichnung im Einzelnen erläutert. Es zeigen:

Fig. 1
eine Draufsicht auf ein Gebläse gemäß dem ersten Ausführungsbeispiel,
Fig. 2
einen Schnitt entlang Linie A-A von Fig. 1, und
Fig. 3
eine schematische Ansicht des Gebläses entsprechend Fig. 2 samt angedeuteter Frisch- und Umluftansaugung und nachfolgend angeordneter Klimaanlage.
Fig. 4
eine Draufsicht auf ein Gebläse, das nicht zum Gegenstand der Erfindung gehört.
Fig. 5
einen Schnitt entlang Linie A-A von Fig. 4.
In the following the invention with reference to an embodiment with reference to the drawings will be explained in detail. Show it:
Fig. 1
a plan view of a blower according to the first embodiment,
Fig. 2
a section along line AA of Fig. 1 , and
Fig. 3
a schematic view of the fan accordingly Fig. 2 including indicated fresh and Umluftansaugung and subsequently arranged air conditioning.
Fig. 4
a plan view of a blower, which does not belong to the subject invention.
Fig. 5
a section along line AA of Fig. 4 ,

Ein Gebläse 1 einer Fahrzeugklimaanlage 2 weist ein in einem Gebläsegehäuse 3 angeordnetes Laufrad 4 sowie einen Gebläsemotor 5 auf. Das Gebläse 1 saugt über Klappen (nicht dargestellt) geregelt Luft aus der Umgebung (Frischluft) über einen Frischluftkanal 6a und Luft aus dem Fahrzeuginnenraum (Umluft) über einen Umluftkanal 6b an. Auf die beiden Luftkanäle wird im Folgenden auch als Ansaugluftkanäle Bezug genommen.A blower 1 of a vehicle air conditioning system 2 has an impeller 4 arranged in a blower housing 3 and a blower motor 5. The blower 1 sucks controlled via the flaps (not shown) air from the environment (fresh air) via a fresh air duct 6a and air from the vehicle interior (circulating air) via a circulating air duct 6b. The two air ducts will hereinafter also be referred to as intake air ducts.

Die Ansaugluftkanäle 6a, 6b sind in einem Zuströmgehäuse 22 ausgebildet, das als Aufsatz mit dem Gebläsegehäuse 3 verbunden ist. In der Trennebene zwischen dem Zuströmgehäuse 22 und Gebläsegehäuse 3 befindet sich die eigentliche Eintrittsöffnung 23 des Gebläses.The intake air ducts 6a, 6b are formed in a Zuströmgehäuse 22 which is connected as an attachment to the fan housing 3. In the parting plane between the Zuströmgehäuse 22 and blower housing 3, the actual inlet opening 23 of the blower is.

Die über die beiden Luftkanäle 6a, 6b angesaugte Luft gelangt nach Durchströmen des Gebläses 1 über einen Austrittsluftkanal 7 direkt in den folgenden Bereich des Klimaanlagengehäuses 8, in welchem ein Filter 9, ein Verdampfer 10 und ein Heizkörper 11 angeordnet sind. Die Regelung der Temperatur erfolgt auf herkömmliche Weise mittels Temperaturmischklappen 12, welche den kalten, vom Verdampfer 10 kommenden Luftstrom auf den Heizkörper 11 und Bypässe 13 verteilen. Die dadurch unterschiedliche temperierten Teilluftströme werden im nachfolgend angeordneten Mischraum 14 vermischt und über klappengeregelte Auslassöffnungen und Luftkanäle 15 den verschiedenen Bereichen des Fahrzeuginnenraums zugeführt. Die Ausgestaltung der Klimaanlage 2 kann abweichend vom Ausführungsbeispiel auf beliebige herkömmliche Weise vorgesehen sein.The air sucked in via the two air ducts 6a, 6b, after flowing through the blower 1, flows via an outlet air duct 7 directly into the following region of the air conditioning housing 8, in which a filter 9, an evaporator 10 and a radiator 11 are arranged. The regulation of the temperature is carried out in a conventional manner by means of temperature mixing flaps 12, which distribute the cold, coming from the evaporator 10 air flow to the radiator 11 and bypasses 13. The thus different tempered partial air streams are mixed in the mixing chamber 14 arranged below and fed to the various areas of the vehicle interior via flap-controlled outlet openings and air ducts 15. The embodiment of the air conditioner 2 may be provided deviating from the embodiment in any conventional manner.

Für die Beschreibung des Gebläses 1 wird im Folgenden auf die Figuren 1 und 2 Bezug genommen, wobei zur besseren Ersichtlichkeit in der Zeichnung die Figuren durch gestrichelt dargestellte Schwerelinien miteinander verbunden sind. Die Strömungsverläufe der Luft sind an den Ein- und Austritten von Fig. 2 und am Eintritt des Frischluftkanals 6a von Fig. 1 durch Pfeile verdeutlicht.For the description of the blower 1 is hereinafter referred to the Figures 1 and 2 Reference is made, for better clarity in the drawing, the figures are interconnected by dashed lines shown gravity lines. The flow patterns of the air are at the entrances and exits from Fig. 2 and at the entrance of the fresh air channel 6a of Fig. 1 illustrated by arrows.

Wie aus Fig. 1 ersichtlich, weist das Gebläsegehäuse drei Stufen auf, wobei in der obersten Stufe, dem Zuströmgehäuse 22, der Frisch- und der Umluftkanal 6a, 6b einmünden und die Luftströmung etwas umgelenkt wird. In der zweiten, mittleren Stufe ist das eigentliche Spiralgehäuse des Gebläses 1 samt Laufrad 4 sowie der Austritt (Austrittsluftkanal 7) angeordnet. Unterhalb hiervon ist in der dritten Stufe der Gebläsemotor 5 angeordnet. Hierbei ist, wie aus Fig. 2 deutlich ersichtlich, sowohl der Frisch- als auch der Umluftkanal 6a, 6b seitlich versetzt bezüglich der Drehachse des Laufrades 4 und etwas oberhalb desselben angeordnet, wobei die beiden Ansaugluftkanäle 6 gemäß dem vorliegenden Ausführungsbeispiel in ihrer Anordnung punktsymmetrisch zueinander bezüglich der Drehachse des Laufrades 4 angeordnet sind, d.h. sie sind an diagonal zueinander angeordneten Seiten oberhalb des Laufrades 4 angeordnet. Die Anströmung erfolgt hierbei im Mittel senkrecht zur radialen Richtung, wobei die Mitte der Luftkanäle 6 deutlich bezüglich des Laufrades 4 nach außen versetzt ist. Vorliegend ist auch die dem Laufrad 4 am Nächsten kommende Wand leicht nach außen versetzt.How out Fig. 1 can be seen, the fan housing on three stages, in the uppermost stage, the Zuströmgehäuse 22, the fresh and the recirculating air duct 6a, 6b open and the air flow is slightly deflected. In the second, middle stage, the actual volute casing of the blower 1 together with the impeller 4 and the outlet (outlet air duct 7) is arranged. Below this, the blower motor 5 is arranged in the third stage. Here's how out Fig. 2 clearly visible, both the fresh and the recirculating air duct 6a, 6b laterally offset with respect to the axis of rotation of the impeller 4 and arranged slightly above it, wherein the two intake air ducts 6 are arranged according to the present embodiment in their arrangement point-symmetrical to each other with respect to the axis of rotation of the impeller 4 ie they are arranged on diagonally arranged sides above the impeller 4. The flow is in this case in the middle perpendicular to the radial direction, the center of the air channels 6 is clearly offset with respect to the impeller 4 to the outside. In the present case, the impeller 4 closest to the wall is slightly offset to the outside.

Der Eintritt der zu fördernden Luft in die entsprechenden Ansaugkanäle 6a, 6b erfolgt durch die zugeordneten Ansaugöffnungen 20a, 20b, wobei vorliegend die Flächennormalen auf diese Ansaugöffnungen 20a, 20b parallel zueinander und senkrecht zur Laufradachse angeordnet sind. In Fig. 2 sind diese Flächennormalen als strichpunktierte Linien dargestellt und senkrecht zur jeweiligen Ansaugöffnung 20a, 20b und durch den Flächenmittelpunkt derselben verlaufend. In dem gezeigten ersten Ausführungsbeispiel liegen die Ansaugöffnungen in einer gemeinsamen Ebene, in der auch die Achse des Laufrads 4 liegt. Die Flächennormale durch die Austrittöffnung 21 ist im Wesentlichen senkrecht zu den Flächennormalen der Ansaugöffnungen 20a, 20b, sowie zur Achse des Laufrades 4.The inlet of the air to be conveyed into the corresponding intake ducts 6a, 6b takes place through the associated intake openings 20a, 20b, wherein in the present case the surface normals are arranged on these intake openings 20a, 20b parallel to one another and perpendicular to the rotor axis. In Fig. 2 these surface normals are shown as dash-dotted lines and perpendicular to the respective intake opening 20a, 20b and extending through the center of area thereof. In the first embodiment shown, the intake openings lie in a common plane, in which the axis of the impeller 4 is located. The surface normal through the outlet opening 21 is substantially perpendicular to the surface normals of the suction openings 20a, 20b and to the axis of the impeller 4.

Die Summe des Querschnitts der Ansaugöffnungen 20a, 20b welche in einer Ebene E (siehe Fig. 2) liegen, entspricht gemäß dem vorliegenden Ausführungsbeispiel annährend der Querschnittsfläche des Laufrads in der entsprechenden Ebene E, in welcher auch die Drehachse liegt, bzw. im Wesentlichen dem Querschnitt der Eintrittsöffnung 23. Die beiden Ansaugluftkanäle 6 führen spiralförmig die angesaugte Luft zum Laufrad 4, wobei sie über die oben angeordnete kreisförmige Eintrittsöffnung 23 - auch als Zargenöffnung bezeichnet - aus den Ansaugluftkanälen 6a, 6b zum Laufrad 4 gelangt.The sum of the cross section of the intake openings 20a, 20b which in a plane E (see Fig. 2 ), according to the present embodiment corresponds approximately to the cross-sectional area of the impeller in the corresponding plane E, in which also lies the axis of rotation, or substantially the cross section of the inlet opening 23. The two intake air ducts 6 spiral the sucked air to the impeller 4, wherein It passes through the above-arranged circular inlet opening 23 - also referred to as a frame opening - from the intake air ducts 6a, 6b to the impeller 4.

Durch die spiralförmige Ausgestaltung der Ansaugluftkanäle 6a, 6b wird ein Vordrall erzeugt, welcher - überlagert mit einer relativ kleinen Linearkomponente - durch die Zargenöffnung hinweg weitergeführt wird, und die Zuströmung zur Laufradbeschaufelung verbessert. Hierbei bewegt sich die Luft also nicht direkt auf die Zargenöffnung 23 zu, sondern strömt - in Bezug auf die Mitte des Ansaugluftkanals 6 gesehen - tangential hierzu an, wobei insgesamt jeweils eine windschiefe Anordnung von Drehachse des Laufrades 4 (Mitte der Zargenöffnung) und der Flächennormalen auf die Ansaugöffnung 21a, 21b eines Ansaugkanals 6 vorliegt. Durch eine derartige Ausgestaltung ergibt sich eine wirbelartige Drehbewegung in die Zargenöffnung hinein.The spiral-shaped configuration of the intake air ducts 6a, 6b generates a pre-whirl which, superimposed with a relatively small linear component, is continued through the door opening and improves the inflow to the impeller blading. In this case, the air does not move directly to the Zargenöffnung 23, but flows - seen with respect to the center of the intake air duct 6 - tangentially thereto, wherein a total of one skew arrangement of the axis of rotation of the impeller 4 (center of the frame opening) and the surface normal on the suction port 21a, 21b of an intake passage 6 is present. Such a configuration results in a vortex-like rotational movement into the frame opening.

Beim vorstehend beschriebenen Ausführungsbeispiel ist ein Luftgebläse vorgesehen, jedoch ist eine entsprechende Ausgestaltung auch für andere Fluide, wie bspw. Gase, anwendbar und zudem nicht notwendigerweise auf Klimaanlagen beschränkt. In den Figuren 4 und 5 ist ein Gebläse dargestellt mit einer alternativen Anordnung der Ansaugöffnungen 20a, 20b zueinander, das jedoch kein Teil der Erfindung ist. Die Bezugszeichen entsprechen sofern sie funktional gleichwirkende Bauteile betreffen, den Bezugszeichen die bereits für das erste Ausführungsbeispiel Verwendung fanden.In the embodiment described above, an air blower is provided, but a corresponding configuration for other fluids, such as. Gases, applicable and also not necessarily limited to air conditioning. In the FIGS. 4 and 5 a blower is shown with an alternative arrangement of the suction ports 20a, 20b to each other, which is not part of the invention. The reference signs correspond insofar as they relate to functionally equivalent components, the reference numerals which have already been used for the first embodiment.

Wie auch im ersten Ausführungsbeispiel, weist das Gebläsegehäuse drei Stufen auf, wobei in der obersten Stufe, dem Zuströmgehäuse 22, der Frisch- und der Umluftkanal 6a, 6b einmünden und die Luftströmung etwas umgelenkt wird. Im Unterschied zum ersten Ausführungsbeispiel sind die Ansaugöffnungen 20a, 20b nicht mehr in einer gemeinsamen Ebene, sondern in einem Winkel von etwa 80° zueinander geneigt angeordnet. Ebenso gilt dies selbstverständlich auch für die entsprechenden Flächennormalen, die in Fig. 5 wiederum als strichpunktierte Linien dargestellt sind. Die auf der linken Seite ausgebildete Ansaugöffnung 20a liegt im Gegensatz zur Ansaugöffnung 20b auf der rechten Seite in einer Ebene, die versetzt zur Drehachse angeordnet ist. Die Drehachse des Laufrads 4 ist zu dieser Ebene allerdings ebenfalls parallel. As in the first embodiment, the fan housing has three stages, wherein in the uppermost stage, the Zuströmgehäuse 22, the fresh and the recirculating air duct 6a, 6b open and the air flow is slightly deflected. In contrast to the first embodiment, the suction openings 20a, 20b are no longer arranged in a common plane, but inclined at an angle of about 80 ° to each other. Of course, this also applies to the corresponding surface normals, which in Fig. 5 again shown as dash-dotted lines. The suction port 20a formed on the left side is opposed to the suction port 20b on the right side in a plane offset from the rotation axis. However, the axis of rotation of the impeller 4 is also parallel to this plane.

Claims (7)

  1. A fan, in particular for the fresh and/or circulating air intake for a vehicle air-conditioning system, with a fan housing (3), an impeller (4) with an axis of rotation and a fan motor (5) driving the impeller (4), wherein the fan housing (3) has at least one intake opening (20) for an intake duct (6) and an outlet opening (21) for an outlet duct (7), wherein the surface normal to the intake opening (20) of the intake duct (6) is arranged in a skewed manner with respect to the axis of rotation of the impeller (4) and the intake opening (20) in a plane offset to the outlet opening (21) in the direction of the axis of rotation of the impeller (4), wherein the fan motor (5) on the opposite side of the impeller (4) is arranged with respect to the intake duct(s) (6) and two intake ducts (6a, 6b) with one respective assigned intake opening (20a, 20b) are provided, wherein the intake openings (20a, 20b) are arranged on opposite sides of the axis of rotation of the impeller (4), characterised in that the intake openings (20a, 20b) are arranged in one plane, wherein the intake openings are point-symmetrical to one another with respect to the axis of rotation.
  2. The fan according to claim 1, characterised in that the surface normal to each intake opening (20) is arranged parallel to a plane in which the axis of rotation of the impeller (4) lies, wherein in particular the central longitudinal axis of each intake duct (6) is arranged approximately tangentially to the inlet opening to the impeller (4) .
  3. The fan according to one of claims 1 to 2, characterised in that the intake ducts (6a, 6b) are arranged in an inflow housing (22).
  4. The fan according to claim 3, characterised in that the inflow housing (22) abuts the fan housing (3) in the axial direction of the axis of rotation of the impeller (4).
  5. The fan according to one of claims 3 or 4, characterised in that the inflow housing (22) and the fan housing (3) are formed as separate components.
  6. The fan according to one of the preceding claims, characterised in that the fan (1) is a fan for gaseous media, in particular air.
  7. A vehicle air-conditioning system (2), characterised by a fan (1) according to one of claims 1 to 6.
EP08020487.8A 2008-01-16 2008-11-26 Fan especially for vehicle ventilation Ceased EP2080910B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008004746A DE102008004746A1 (en) 2008-01-16 2008-01-16 Blower, in particular for the fresh and / or Umluftansaugung a vehicle air conditioning

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EP2080910A2 EP2080910A2 (en) 2009-07-22
EP2080910A3 EP2080910A3 (en) 2013-11-06
EP2080910B1 true EP2080910B1 (en) 2018-06-20

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EP2846100B1 (en) * 2013-09-10 2018-05-30 Electrolux Appliances Aktiebolag Cooling and exhaust system for a cooking oven

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DE102008004746A1 (en) 2009-07-23
EP2080910A3 (en) 2013-11-06

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