EP2713059B1 - Fan arrangement - Google Patents
Fan arrangement Download PDFInfo
- Publication number
- EP2713059B1 EP2713059B1 EP13183834.4A EP13183834A EP2713059B1 EP 2713059 B1 EP2713059 B1 EP 2713059B1 EP 13183834 A EP13183834 A EP 13183834A EP 2713059 B1 EP2713059 B1 EP 2713059B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base plate
- fan apparatus
- drive shaft
- nut
- fan
- 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.)
- Active
Links
- 238000010411 cooking Methods 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
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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
- 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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/50—Building or constructing in particular ways
- F05D2230/51—Building or constructing in particular ways in a modular way, e.g. using several identical or complementary parts or features
Definitions
- Fan devices are used for even heat distribution in a cooking chamber of a cooking device.
- the DE 10 2005 035 462 A1 such a fan device.
- the known fan device comprises a fan wheel and a drive shaft.
- a driver is arranged on the drive shaft in a rotationally fixed manner.
- the driver comprises projections which engage in corresponding recesses in the fan wheel, as a result of which the drive shaft is connected to the fan wheel in a rotationally fixed manner.
- a nut presses the fan wheel together with the driver axially against a stop formed on the shaft.
- the driver is designed as a separate part which is pressed onto the drive shaft.
- the US 4,174,559 A shows a fan device with a plate, on which blades are provided, and a further plate, which is connected to the plate.
- the plate and the further plate are connected with the aid of connecting elements of the further plate, which extend through the plate.
- the object of the present invention is to provide an improved fan device which can preferably be easily installed in a cooking appliance.
- a fan device for a cooking device, in particular for an oven which has a fan wheel.
- the fan wheel comprises a base plate and a wing arrangement.
- the wing arrangement is arranged on the base plate and positively connected to it in the direction of rotation.
- a drive shaft having an axial stop and a nut are provided which presses the fan wheel against the stop.
- the nut presses radially against the impeller assembly.
- the base plate and the wing arrangement can be connected to one another in another way, for example riveted, in addition to the positive connection in the direction of rotation.
- the base plate and / or the wing arrangements can each be made of sheet metal and in particular by stamping and / or bending.
- the cooking appliance is designed as a household cooking appliance.
- the base plate for the positive connection with the wing arrangement has at least one axial projection which engages in an opening in the wing arrangement.
- a plurality of axial projections for example four such projections, are preferably provided, each of which engages in a corresponding opening in the wing arrangement.
- the one or more projections act as drivers, that is, they take the wing arrangement in the direction of rotation.
- "Axial”, “radial” and “in the circumferential direction” in the present case refer to an axis of rotation of the fan wheel, unless stated otherwise.
- the projection is designed in the form of a hook which is bent out of the main plane of extension of the base plate.
- the wing arrangement comprises a plurality of wings which form gaps between them in the circumferential direction.
- Such a wing arrangement is easy to manufacture.
- the base plate is designed such that it partially or completely closes the spaces in the axial direction.
- the base plate can have a diameter which is at least as large as the diameter of the wing arrangement.
- Such a two-part fan wheel is easy to manufacture.
- a drive shaft is provided which is connected to the base plate in a rotationally fixed manner.
- the base plate then transmits the rotary movement to the wing arrangement by means of the positive connection.
- the drive shaft is positively connected to the base plate for the rotationally fixed connection.
- Such a positive connection for example, in contrast to the non-positive press fit described in the introduction, can be produced simply when the fan device is installed in the cooking appliance, that is to say, for example, after the drive shaft has been pushed through the opening in the muffle rear wall.
- the base plate has a D-hole in which the drive shaft engages in a form-fitting manner with a corresponding contour.
- Such a D-hole can be produced easily, for example by punching out.
- a drive shaft having an axial stop and a nut are provided which presses the fan wheel against the stop.
- the nut presses radially against the impeller assembly.
- the drive shaft is guided through an opening in the impeller arrangement.
- the opening is designed, for example, as a circular hole.
- the nut presses radially against an edge region of the opening.
- the edge region has a section in the form of a cone envelope around its circumference, against which the nut presses.
- An outer surface of the section can, for example, form an angle between 5 and 10 ° with the axis of rotation of the fan wheel.
- the edge region has a further section which adjoins the section and guides the drive shaft.
- the further section can have the shape of a circular cylinder enveloping its circumference.
- the projection is designed as a counter-holder for a tool for screwing on the nut.
- Fig. 1 schematically shows a cooking appliance 1.
- the cooking appliance 1 is designed in the form of a household cooking appliance, in particular in the form of an oven.
- a fan device 2 is arranged in the cooking device 1.
- the fan device 2 is shown in section through an axis of rotation 3 thereof.
- the fan device 2 comprises a fan wheel 4.
- Fig. 2 shows the fan wheel 4 in an exploded view.
- Fig. 3 shows the fan wheel 4 Fig. 2 in the assembled state.
- the fan wheel 4 is composed of a base plate 5 and a wing arrangement 6.
- the base plate 5 has a circular disk element 7.
- the disk element 7 has a D-hole 11 in the center, as in FIG Figures 2 and 3rd to recognize.
- the D-hole 11 is in positive engagement with a corresponding contour 12 of a drive shaft 13 of the fan device 2 defining the axis of rotation 3 in the direction of rotation 18 about the axis of rotation 3, see Fig. 1 .
- axial projections 14, for example four axial projections 14, are formed on the disk element 7.
- "Axial”, “radial” and “in the circumferential direction” in the present case refers to the axis of rotation 3, unless stated otherwise.
- the projections 14 are about the axis of rotation 3, see Fig. 1 , evenly distributed in the circumferential direction.
- the projections 14 are in the form of Hooks are formed, which are bent out of the main plane of extension of the disc element 7 so that they extend axially.
- the base plate 5 can be easily made from sheet metal. This can be done by punching and bending a corresponding sheet metal blank.
- the vane arrangement 6 comprises a plurality of vanes 15, for example seven such vanes 15.
- the vanes 15 extend radially with respect to the axis of rotation 3.
- the vanes 15 are held on a hub 16.
- the hub 16 has openings 17 corresponding to the projections 14.
- the projections 14 In the assembled state of the fan wheel 4, the projections 14 each extend through an opening 17, see Figures 1 and 3rd . This results in a positive connection in the direction of rotation 18 between the base plate 5 and the wing arrangement 6.
- the wings 15 are spaced apart from one another in the circumferential direction, so that there are spaces 21 between them.
- the disk element 7 has the same diameter as the wing arrangement 6, as in FIG Fig. 3 to recognize. The gaps 21 are thus closed in the axial direction by the disk element 7.
- the wing arrangement 6 is preferably also made of sheet metal, in particular by bending and punching.
- the drive shaft 13 has an axial stop 22.
- the fan device 2 comprises a nut 23.
- the nut 23 is screwed onto the free end 24 of the drive shaft 13 and presses the assembled fan wheel 4 against the stop 22. This prevents the wing arrangement 6 arranged on the base plate 5 from being detached from the base plate 5 releases and in extreme cases even disengages from the projections 14.
- the free end 24 of the drive shaft 13 is through a central opening 25 (see Fig. 2 ) performed the wing assembly 6.
- the opening 25 is, as in Fig. 1 seen, bordered by an edge region 26.
- the edge region 26 comprises a section 27 and a section 28 which adjoins the section 27.
- the shape of section 27 corresponds the envelope of a truncated cone on its circumference.
- the shape of section 28 corresponds to the envelope of a circular cylinder on its circumference.
- the nut 23 has a contour 31 corresponding to the section 27, with which it presses radially inwards and at the same time axially onto the section 27. A tool is used to tighten the nut 23, which is supported on the projections 14 which then act as counterholders.
- the drive shaft 13 is guided through a schematically illustrated opening 32 in a muffle rear wall of the cooking device 1, not shown in detail.
- the diameter of the opening 32 only has to be slightly larger than that of the stop 22 so that the drive shaft 13 can be guided through the latter when the fan device 2 is installed in the cooking device 1.
- a large opening as is required in the introductory solution known from the prior art due to the driver designed as a separate part, can be avoided in the present case. This minimizes temperature loss and vapors discharge through the opening 32.
- An electric motor (not shown) of the cooking device 1 can be arranged behind the opening 32 and drives the fan device 2 for rotation about the axis of rotation 3.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Lüftervorrichtungen dienen zur gleichmäßigen Wärmeverteilung in einem Garraum eines Gargeräts. Beispielsweise beschreibt die
Die
Aufgabe der vorliegenden Erfindung ist es, eine verbesserte Lüftervorrichtung bereitzustellen, welche sich bevorzugt einfach in ein Gargerät einbauen lässt.The object of the present invention is to provide an improved fan device which can preferably be easily installed in a cooking appliance.
Daher wird eine Lüftervorrichtung für ein Gargerät, insbesondere für einen Backofen, vorgeschlagen, welche ein Lüfterrad aufweist. Das Lüfterrad umfasst eine Basisplatte und eine Flügelanordnung. Die Flügelanordnung ist auf der Basisplatte angeordnet und mit dieser in Drehrichtung formschlüssig verbunden. Weiterhin sind eine einen axialen Anschlag aufweisende Antriebswelle und eine Mutter vorgesehen, welche das Lüfterrad gegen den Anschlag presst. Außerdem presst die Mutter radial gegen die Flügelradanordnung.A fan device for a cooking device, in particular for an oven, is therefore proposed, which has a fan wheel. The fan wheel comprises a base plate and a wing arrangement. The wing arrangement is arranged on the base plate and positively connected to it in the direction of rotation. Furthermore, a drive shaft having an axial stop and a nut are provided which presses the fan wheel against the stop. In addition, the nut presses radially against the impeller assembly.
Aufgrund der formschlüssigen Verbindung zwischen der Basisplatte und der Flügelanordnung in Drehrichtung wird kein zusätzlicher Mitnehmer benötigt. Dies hat den Vorteil, dass sich die Antriebswelle bei der erfindungsgemäßen Lösung (ohne Mitnehmer) durch eine kleinere Öffnung in einer Muffelrückwand des Gargeräts zum Montieren der Lüftervorrichtung in dem Gargerät führen lässt. Die kleinere Öffnung ist mit einem geringen Temperaturverlust und Wrasenaustrag durch diese verbunden.Due to the positive connection between the base plate and the wing arrangement in the direction of rotation, no additional driver is required. This has the advantage that the drive shaft in the solution according to the invention (without driver) can be fitted through a smaller opening in a muffle rear wall of the cooking device Fan device in the cooking device. The smaller opening is associated with a low temperature loss and vapor discharge through it.
Die Basisplatte und die Flügelanordnung können zusätzlich zu dem Formschluss in Drehrichtung noch anderweitig miteinander verbunden, beispielsweise vernietet, sein. Die Basisplatte und/oder die Flügelanordnungen können jeweils aus Blech und insbesondere durch Stanzen und/oder Biegen hergestellt sein.The base plate and the wing arrangement can be connected to one another in another way, for example riveted, in addition to the positive connection in the direction of rotation. The base plate and / or the wing arrangements can each be made of sheet metal and in particular by stamping and / or bending.
Das Gargerät ist vorliegend als Haushaltsgargerät ausgeführt.In the present case, the cooking appliance is designed as a household cooking appliance.
Gemäß einer Ausführungsform weist die Basisplatte zur formschlüssigen Verbindung mit der Flügelanordnung zumindest einen axialen Vorsprung auf, welcher in eine Öffnung in der Flügelanordnung greift.According to one embodiment, the base plate for the positive connection with the wing arrangement has at least one axial projection which engages in an opening in the wing arrangement.
Bevorzugt sind mehrere axiale Vorsprünge, beispielsweise vier solcher Vorsprünge, vorgesehen, welche jeweils in eine entsprechende Öffnung in der Flügelanordnung greifen. Der eine oder die mehreren Vorsprünge fungieren als Mitnehmer, das heißt, sie nehmen die Flügelanordnung in der Drehrichtung mit. "Axial", "radial" und "in Umfangsrichtung" bezieht sich vorliegend auf eine Drehachse des Lüfterrads, soweit nichts anderes angegeben ist.A plurality of axial projections, for example four such projections, are preferably provided, each of which engages in a corresponding opening in the wing arrangement. The one or more projections act as drivers, that is, they take the wing arrangement in the direction of rotation. "Axial", "radial" and "in the circumferential direction" in the present case refer to an axis of rotation of the fan wheel, unless stated otherwise.
Gemäß einer weiteren Ausführungsform ist der Vorsprung in Form eines Hakens ausgebildet, welcher aus der Haupterstreckungsebene der Basisplatte herausgebogen ist.According to a further embodiment, the projection is designed in the form of a hook which is bent out of the main plane of extension of the base plate.
Dadurch lässt sich der axiale Vorsprung einfach herstellen.This makes it easy to produce the axial projection.
Gemäß einer weiteren Ausführungsform umfasst die Flügelanordnung mehrere Flügel, welche in Umfangsrichtung Zwischenräume zwischen sich ausbilden.According to a further embodiment, the wing arrangement comprises a plurality of wings which form gaps between them in the circumferential direction.
Eine solche Flügelanordnung lässt sich einfach herstellen.Such a wing arrangement is easy to manufacture.
Gemäß einer weiteren Ausführungsform ist die Basisplatte derart ausgebildet, dass sie die Zwischenräume in axialer Richtung teilweise oder vollständig verschließt.According to a further embodiment, the base plate is designed such that it partially or completely closes the spaces in the axial direction.
Dazu kann die Basisplatte einen Durchmesser aufweisen, welcher zumindest so groß ist wie der Durchmesser der Flügelanordnung. Ein solches zweiteiliges Lüfterrad lässt sich einfach herstellen.For this purpose, the base plate can have a diameter which is at least as large as the diameter of the wing arrangement. Such a two-part fan wheel is easy to manufacture.
Gemäß einer weiteren Ausführungsform ist eine Antriebswelle vorgesehen, welche mit der Basisplatte drehfest verbunden ist.According to a further embodiment, a drive shaft is provided which is connected to the base plate in a rotationally fixed manner.
Die Basisplatte überträgt dann die Drehbewegung mittels des Formschlusses auf die Flügelanordnung.The base plate then transmits the rotary movement to the wing arrangement by means of the positive connection.
Gemäß einer weiteren Ausführungsform ist die Antriebswelle zur drehfesten Verbindung mit der Basisplatte formschlüssig verbunden.According to a further embodiment, the drive shaft is positively connected to the base plate for the rotationally fixed connection.
Eine solche formschlüssige Verbindung lässt sich beispielsweise im Gegensatz zu der einleitend beschriebenen, kraftschlüssigen Presspassung einfach bei der Montage der Lüftervorrichtung in dem Gargerät, also beispielsweise nach Durchschieben der Antriebswelle durch die Öffnung in der Muffelrückwand, herstellen.Such a positive connection, for example, in contrast to the non-positive press fit described in the introduction, can be produced simply when the fan device is installed in the cooking appliance, that is to say, for example, after the drive shaft has been pushed through the opening in the muffle rear wall.
Gemäß einer weiteren Ausführungsform weist die Basisplatte ein D-Loch auf, in welches die Antriebswelle mit einer entsprechenden Kontur derselben formschlüssig eingreift.According to a further embodiment, the base plate has a D-hole in which the drive shaft engages in a form-fitting manner with a corresponding contour.
Ein solches D-Loch lässt sich einfach herstellen, beispielsweise durch Ausstanzen.Such a D-hole can be produced easily, for example by punching out.
Weiterhin sind eine einen axialen Anschlag aufweisende Antriebswelle und eine Mutter vorgesehen, welche das Lüfterrad gegen den Anschlag presst.Furthermore, a drive shaft having an axial stop and a nut are provided which presses the fan wheel against the stop.
Dadurch ist sichergestellt, dass die Flügelanordnung sich nicht in axialer Richtung bewegt und dadurch außer Eingriff mit den Vorsprüngen der Basisplatte gerät, wodurch die formschlüssige Verbindung aufgehoben werden würde.This ensures that the wing arrangement does not move in the axial direction and thus disengages from the projections of the base plate, as a result of which the positive connection would be canceled.
Außerdem presst die Mutter radial gegen die Flügelradanordnung.In addition, the nut presses radially against the impeller assembly.
Dadurch wird erzielt, dass sich die Mutter auch unter den hohen im Betrieb der Lüftervorrichtung anzutreffenden Temperaturen im Gargerät nicht löst, ohne dass zusätzliche Sicherungselemente vorgesehen werden müssen.It is thereby achieved that the mother does not come loose in the cooking device even under the high temperatures encountered during operation of the fan device without additional securing elements having to be provided.
Gemäß einer weiteren Ausführungsform ist die Antriebswelle durch eine Öffnung in der Flügelradanordnung geführt.According to a further embodiment, the drive shaft is guided through an opening in the impeller arrangement.
Die Öffnung ist beispielsweise als kreisrundes Loch ausgebildet.The opening is designed, for example, as a circular hole.
Gemäß einer weiteren Ausführungsform presst die Mutter radial gegen einen Randbereich der Öffnung.According to a further embodiment, the nut presses radially against an edge region of the opening.
Dadurch lässt sich die gewünschte Presspassung einfach konstruktionstechnisch erzielen.This allows the desired press fit to be easily achieved in terms of construction.
Gemäß einer weiteren Ausführungsform weist der Randbereich einen Abschnitt in der Gestalt einer einen Kegelstumpf an dessen Umfang Umhüllenden auf, gegen welchen die Mutter presst.According to a further embodiment, the edge region has a section in the form of a cone envelope around its circumference, against which the nut presses.
Eine Außenfläche des Abschnitts kann mit der Drehachse des Lüfterrads beispielsweise einen Winkel zwischen 5 und 10° einschließen.An outer surface of the section can, for example, form an angle between 5 and 10 ° with the axis of rotation of the fan wheel.
Gemäß einer weiteren Ausführungsform weist der Randbereich einen weiteren Abschnitt auf, welcher sich an den Abschnitt anschließt und die Antriebswelle führt. Der weitere Abschnitt kann die Gestalt einer einen Kreiszylinder an dessen Umfang Umhüllenden aufweisen.According to a further embodiment, the edge region has a further section which adjoins the section and guides the drive shaft. The further section can have the shape of a circular cylinder enveloping its circumference.
Dadurch wird ein Verkanten der Flügelanordnung gegenüber der Antriebswelle beim Aufschieben der Flügelanordnung auf die Antriebswelle vermieden.This prevents the wing assembly from tilting with respect to the drive shaft when the wing assembly is pushed onto the drive shaft.
Gemäß einer weiteren Ausführungsform ist der Vorsprung als Gegenhalter für ein Werkzeug zum Aufschrauben der Mutter ausgebildet.According to a further embodiment, the projection is designed as a counter-holder for a tool for screwing on the nut.
Dadurch wird ein Gegenhalten beispielsweise an der Flügelradanordnung und damit ein etwaiges Verbiegen derselben vermieden.This avoids holding back against the impeller arrangement, for example, and thus prevents the same from bending.
Weitere vorteilhafte Ausgestaltungen und Aspekte der Erfindung sind Gegenstand der Unteransprüche sowie der im Folgenden beschriebenen Ausführungsbeispiele der Erfindung. Im Weiteren wird die Erfindung anhand von bevorzugten Ausführungsformen unter Bezugnahme auf die beiliegenden Figuren näher erläutert.Further advantageous refinements and aspects of the invention are the subject of the subclaims and the exemplary embodiments of the invention described below. The invention is explained in more detail below on the basis of preferred embodiments with reference to the accompanying figures.
Es zeigt dabei:
-
Fig. 1 : ein schematisch angedeutetes Gargerät mit einer Lüftervorrichtung, welche im Schnitt dargestellt ist, gemäß einer Ausführungsform; -
Fig. 2 : in einer Explosionsansicht ein Lüfterrad der Lüftervorrichtung ausFig. 1 ; und -
Fig. 3 : das Lüfterrad ausFig. 2 im zusammengesetzten Zustand.
-
Fig. 1 : A schematically indicated cooking device with a fan device, which is shown in section, according to one embodiment; -
Fig. 2 : in an exploded view of a fan wheel of the fan deviceFig. 1 ; and -
Fig. 3 : the fan wheel offFig. 2 in the assembled state.
In den Figuren sind gleiche oder funktionsgleiche Elemente mit denselben Bezugszeichen versehen worden, soweit nichts anderes angegeben ist.In the figures, elements that are the same or have the same function have been provided with the same reference symbols, unless stated otherwise.
Das Gargerät 1 ist in Form eines Haushaltsgargeräts, insbesondere in Form eines Backofens, ausgebildet. In dem Gargerät 1 ist eine Lüftervorrichtung 2 angeordnet. Die Lüftervorrichtung 2 ist im Schnitt durch eine Drehachse 3 derselben dargestellt. Die Lüftervorrichtung 2 umfasst ein Lüfterrad 4.The cooking appliance 1 is designed in the form of a household cooking appliance, in particular in the form of an oven. A
Wie in
Nun zurückkehrend zu
Die Flügelanordnung 6 umfasst mehrere Flügel 15, beispielsweise sieben solcher Flügel 15. Die Flügel 15 erstrecken sich radial bezogen auf die Drehachse 3. Die Flügel 15 sind an einer Nabe 16 gehalten. Die Nabe 16 weist zu den Vorsprüngen 14 korrespondierende Öffnungen 17 auf. Im zusammengesetzten Zustand des Lüfterrads 4 erstrecken sich die Vorsprünge 14 jeweils durch eine Öffnung 17, siehe
Die Flügel 15 sind in Umfangsrichtung voneinander beabstandet angeordnet, so dass sich zwischen diesen Zwischenräume 21 ergeben. Das Scheibenelement 7 weist denselben Durchmesser auf wie die Flügelanordnung 6, wie in
Die Basisplatte 5 und die Flügelanordnung 6 dienen im Betrieb der Lüftervorrichtung 2 gemeinsam der Lüftführung.The
Zurückkehrend zu
Das freie Ende 24 der Antriebswelle 13 ist durch eine mittige Öffnung 25 (siehe
Die Antriebswelle 13 ist durch eine schematisch dargestellte Öffnung 32 in einer nicht näher dargestellten Muffelrückwand des Gargeräts 1 geführt. Der Durchmesser der Öffnung 32 muss lediglich geringfügig größer sein als der des Anschlags 22, damit die Antriebswelle 13 bei der Montage der Lüftervorrichtung 2 in dem Gargerät 1 durch diese hindurchgeführt werden kann. Eine große Öffnung, wie sie bei der einleitend, aus dem Stand der Technik bekannten Lösung aufgrund des als Separatteil ausgeführten Mitnehmers erforderlich ist, kann vorliegend vermieden werden. Dadurch wird ein Temperaturverlust und Wrasenaustrag durch die Öffnung 32 minimiert. Hinter der Öffnung 32 kann ein nicht gezeigter Elektromotor des Gargeräts 1 angeordnet sein, welcher die Lüftervorrichtung 2 zum Drehen um die Drehachse 3 antreibt.The
Obwohl die vorliegende Erfindung anhand von Ausführungsbeispielen beschrieben wurde, ist sie vielfältig modifizierbar.Although the present invention has been described using exemplary embodiments, it can be modified in many ways.
- 11
- GargerätCooking appliance
- 22nd
- LüftervorrichtungFan device
- 33rd
- DrehachseAxis of rotation
- 44th
- LüfterradFan wheel
- 55
- BasisplatteBase plate
- 66
- FlügelanordnungWing arrangement
- 77
- ScheibenelementDisc element
- 1111
- D-LochD-hole
- 1212th
- Konturcontour
- 1313
- Antriebswelledrive shaft
- 1414
- Vorsprunghead Start
- 1515
- Flügelwing
- 1616
- Nabehub
- 1717th
- Öffnungopening
- 1818th
- DrehrichtungDirection of rotation
- 2121
- ZwischenraumSpace
- 2222
- Anschlagattack
- 2323
- Muttermother
- 2424th
- EndeThe End
- 2525th
- Öffnungopening
- 2626
- RandbereichEdge area
- 2727
- Abschnittsection
- 2828
- Abschnittsection
- 3131
- KontaktflächeContact area
- 3232
- Öffnungopening
Claims (13)
- Fan apparatus (2) for a cooking appliance (1), in particular for a baking oven, with a fan wheel (4), which comprises a base plate (5) and a blade arrangement (6), which is arranged on the base plate (5) and connected thereto in a form-fitting manner in the direction of rotation (18), wherein a drive shaft (13) having an axial end stop (22) and a nut (23) are provided, wherein the nut (23) presses the fan wheel (4) against the end stop (22), and wherein the nut (23) presses radially against the blade arrangement (6).
- Fan apparatus according to claim 1, characterised in that the base plate (5), for connecting to the blade arrangement (6) in a form-fitting manner, has at least one axial protrusion (14) which engages into an opening (17) in the blade arrangement (6).
- Fan apparatus according to claim 2, characterised in that the protrusion (14) is embodied in the form of a hook, which is bent out from the main extension plane of the base plate (5).
- Fan apparatus according to one of claims 1 - 3, characterised in that the blade arrangement (6) comprises a plurality of blades (15), which form intermediate spaces (21) between themselves in the peripheral direction.
- Fan apparatus according to claim 4, characterised in that the base plate (5) is embodied such that it partially or fully closes off the intermediate spaces (21) in the axial direction.
- Fan apparatus according to one of claims 1 - 5, characterised in that a drive shaft (13) is provided, which is connected to the base plate (5) in a rotationally-fixed manner.
- Fan apparatus according to claim 6, characterised in that the drive shaft (13) is connected to the base plate (5) in a form-fitting manner for the rotationally-fixed connection.
- Fan apparatus according to claim 7, characterised in that the base plate (5) has a D hole (11), into which the drive shaft (13) engages in a form-fitting manner with a corresponding contour (12) of the same.
- Fan apparatus according to one of claims 1 - 8, characterised in that the drive shaft (13) is guided through an opening (25) in the blade arrangement (6).
- Fan apparatus according to claim 9, characterised in that the nut (23) presses radially against an edge region (26) of the opening (25).
- Fan apparatus according to claim 10, characterised in that the edge region (26) has a section (27) in the shape of an encasing of a truncated cone on the periphery thereof, against which the nut (23) presses.
- Fan apparatus according to one of claims 2 - 11, characterised in that the protrusion (14) is embodied as a counterhold for a tool for screwing on the nut (23).
- Cooking appliance (1) with a fan apparatus (2) according to one of claims 1 - 12.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012217349.8A DE102012217349A1 (en) | 2012-09-26 | 2012-09-26 | fan device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2713059A2 EP2713059A2 (en) | 2014-04-02 |
EP2713059A3 EP2713059A3 (en) | 2017-08-02 |
EP2713059B1 true EP2713059B1 (en) | 2020-04-22 |
Family
ID=49182083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13183834.4A Active EP2713059B1 (en) | 2012-09-26 | 2013-09-11 | Fan arrangement |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2713059B1 (en) |
DE (1) | DE102012217349A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112283152B (en) * | 2020-10-15 | 2023-04-21 | 青岛海尔智慧厨房电器有限公司 | Bidirectional fan blade and kitchen appliance |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1957988C3 (en) * | 1969-11-18 | 1974-05-02 | Wilhelm 8090 Wasserburg Gronbach | Radial fan wheel for blower |
US4174559A (en) * | 1978-02-09 | 1979-11-20 | J.J. & M. | Fastening method |
DE3039035A1 (en) * | 1980-10-16 | 1982-04-29 | Ebm Elektrobau Mulfingen Gmbh & Co, 7119 Mulfingen | FAN |
DE102005035462A1 (en) | 2005-07-28 | 2007-02-01 | BSH Bosch und Siemens Hausgeräte GmbH | Blower device for a cooking appliance |
US7484934B2 (en) * | 2006-04-26 | 2009-02-03 | Field Controls, Llc | Method and apparatus for propelling an intercepted fluid |
FR2908941B1 (en) * | 2006-11-22 | 2014-03-14 | Valeo Equip Electr Moteur | METHOD FOR PRODUCING A FAN DEVICE FOR A ROTATING ELECTRIC MACHINE AND A FAN DEVICE FOR CARRYING OUT SAID METHOD |
-
2012
- 2012-09-26 DE DE102012217349.8A patent/DE102012217349A1/en not_active Withdrawn
-
2013
- 2013-09-11 EP EP13183834.4A patent/EP2713059B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2713059A3 (en) | 2017-08-02 |
EP2713059A2 (en) | 2014-04-02 |
DE102012217349A1 (en) | 2014-03-27 |
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