EP2971792A1 - Housing for a radial fan of an extractor hood - Google Patents

Housing for a radial fan of an extractor hood

Info

Publication number
EP2971792A1
EP2971792A1 EP14705783.0A EP14705783A EP2971792A1 EP 2971792 A1 EP2971792 A1 EP 2971792A1 EP 14705783 A EP14705783 A EP 14705783A EP 2971792 A1 EP2971792 A1 EP 2971792A1
Authority
EP
European Patent Office
Prior art keywords
housing
stiffening rib
housing according
edge
spiral
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.)
Granted
Application number
EP14705783.0A
Other languages
German (de)
French (fr)
Other versions
EP2971792B1 (en
Inventor
Christoph Häusig
Dietmar Jordan
Eugen Maurer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2971792A1 publication Critical patent/EP2971792A1/en
Application granted granted Critical
Publication of EP2971792B1 publication Critical patent/EP2971792B1/en
Active 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
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the present invention relates to a housing for a radial fan of an extractor hood.
  • DE 90 16 767 U1 describes an extractor hood with a radial fan.
  • the radial fan comprises a housing and a blower motor.
  • the blower motor is held on the housing by means of a motor suspension.
  • the engine mounting comprises three arms, which are each flanged to the housing. The arms extend from their respective attachment portion on the housing into a fan wheel which surrounds the fan motor.
  • the housing is designed as a double-flow spiral housing. Sucked air flows substantially axially through air inlets on both sides of the fan wheel into it and is discharged radially via an air outlet at a higher pressure.
  • a housing for a radial fan of an extractor hood is provided with an air inlet.
  • the air inlet is bounded by an edge which has at least one stiffening rib.
  • the at least one stiffening rib reduces vibration of the housing, so that less disturbing noises are generated.
  • a stiffening rib can be arranged such that it only slightly or not at all disturbs the air flow when it flows into the air inlet.
  • the stiffening rib is placed on the edge, so it is over the edge over.
  • edge is meant that surface which directly adjoins the air inlet, that is to say a corresponding opening in the housing in which the fan wheel is arranged, and a plurality of stiffening ribs may be provided.
  • the stiffening ribs cover less than 50%, preferably less as 80% and more preferably less than 90% of the rim.
  • the radial fan may be formed as a double-flow radial fan.
  • the housing has two opposing air inlets.
  • Each of the air inlets may be bounded by an edge having at least one stiffening rib.
  • the hood is designed as a household appliance.
  • the housing comprises a spiral-shaped base body, which has the air inlet and the edge.
  • a spiral, expanding annular space is formed, which surrounds the fan and extends to the air outlet.
  • the spiral-shaped basic body is designed in the form of a spiral-shaped cylinder which forms the edge on one of its end faces.
  • the end faces preferably extend radially to a rotational axis of the fan wheel.
  • the lateral surface formed between the end faces is broken, for example, by the air outlet.
  • the lateral surface may have a parting plane between two housing halves forming the housing.
  • the air inlet is circular.
  • the at least one stiffening rib extends radially with respect to a central axis of the air inlet or parallel to a radial with respect to the central axis.
  • Such a stiffening rib is suitable for directing the air flow towards the air inlet and in particular not obstructing it.
  • such a stiffening rib ensures stiffening of the housing, in particular the edge.
  • the at least one stiffening rib extends in the same direction spirally with the spiral base body. In other words, the at least one stiffening rib defines a portion of a spiral, which has a spiral course in the same direction of rotation as the spiral-shaped base body.
  • the at least one stiffening rib directly adjoins the air inlet. As a result, the air flow can be guided into the air inlet without turbulence.
  • the at least one stiffening rib extends towards an air outlet of the housing.
  • the stiffening rib may extend along a collar, which connects a tube defining the air outlet with the spiral-shaped base body.
  • the at least one stiffening rib extends over a lateral surface of the spiral cylinder. As a result, the lateral surface can be stiffened.
  • the at least one stiffening rib in the form of a ring section extends on the edge.
  • the at least one stiffening rib thickens along its length. As a result, different areas of the edge can be easily reinforced as needed.
  • the edge has at least one attachment point for fastening an engine mount, which is surrounded by the at least one stiffening rib.
  • the stiffening rib can also serve as a positioning aid.
  • the engine mount can be flanged to the attachment point in particular by means of a screw.
  • the at least one stiffening rib in the form of a semicircular arc extends around the fastening point. As a result, a good shielding of the attachment point is achieved, so that form little air turbulence here.
  • the corresponding semicircle may be open to the air inlet.
  • the housing is composed of two housing halves, which are axially connected to each other. Along a parting plane, a further stiffening rib is formed. The stiffening rib can receive a seal, which seals the two housing halves against each other.
  • an extractor hood is provided with a radial fan.
  • the extractor hood has a housing described above.
  • a fan wheel and a blower motor driving the fan wheel are arranged in the housing.
  • the at least one stiffening rib curves in the direction of rotation of the fan during operation of the Radialgeblässes.
  • the curvature is to be understood here as meaning that the at least one stiffening rib curves away from a radial (in relation to an axis of rotation of the fan wheel) in the direction of rotation.
  • FIG. 1 shows a perspective view of a housing for a radial fan of an extractor hood
  • Fig. 2 a perspective view of a partial extractor hood with a radial fan.
  • FIG. 1 shows a perspective view of a housing 1 for a radial fan 2 shown in FIG. 2 of a schematically illustrated extractor hood 3.
  • the housing 1 comprises a spiral-shaped main body 4 in the form of a spiral-shaped cylinder with end faces 5 (in FIG. 1, only the front end face 5 can be seen due to the illustration). Between the end faces 5, the main body 4 forms a jacket surface 6. The end faces 5 each form an edge which delimits an air inlet 7, 8.
  • the air inlets 7, 8 are opposite.
  • the air inlets 7, 8 can each be formed as circular openings with a central axis 1 1.
  • a spirally expanding annular space 12 is formed, which widens toward a radial air outlet 13.
  • the air outlet 13 may be bounded by a tube 14, which connects via a collar 15 to the lateral surface 6 of the spiral-shaped main body 4.
  • the housing 1 may be composed of two housing halves 16, 17, which are connected together axially along a parting plane 18.
  • "Axial" refers in the present case to the central axis 1 1, which is identical to a rotational axis of a fan motor 21 shown in Figure 2.
  • the parting plane 18 extends radially to the central axis 1 1.
  • the edge 5 may further comprise, for example, three attachment points 22 for flanging a motor suspension 23 shown in FIG.
  • the engine mount 23 may, for example, three support arms 24 which, for example, in one piece to a Connect mount 25 for blower motor 21.
  • the receptacle 25 holds the rotor (not shown) of the blower motor 21 rotatably relative to a stator 26 of the blower motor 21.
  • the engine mount 23 can thus simultaneously form a bearing plate of the blower motor 21.
  • the support arms 24 are designed such that they hold the blower motor 21 (here in particular the rotor and the stator 26) concentric with the central axis 1 1.
  • the central axis 1 1 is also the axis of rotation of a fan disposed in the housing 1 27, which drives the fan motor 21 at the same time. Furthermore, the support arms 24 also position the blower motor 21 axially (with respect to the central axis 1 1) within the fan 27 and thus also within the housing 1.
  • the edge 5 can have several, for example more than ten, stiffening ribs.
  • the stiffening ribs are in the form of webs and, for example, take up less than 95% of the surface of the edge 5.
  • some of the stiffening ribs are described in more detail below and are denoted by 30, 31, 32, 33, 36, 41 and 42 for this purpose.
  • the stiffening rib 30 may extend radially (relative to the central axis 1 1).
  • the reinforcing rib 31 extends parallel to a radial 34 (relative to the central axis or axis of rotation 11).
  • the reinforcing rib 32 curves spirally about an axis of rotation designated 35, in the same direction as the spiral-shaped basic body 4. It can also be seen that the reinforcing rib 32 extends both over the edge 5 and over the lateral surface 6.
  • the stiffening rib 33 extends from the edge 5 via the collar 15.
  • Figure 1 further shows a stiffening rib 36, which see along the parting plane 18 between the two housing halves 16, 17 is formed.
  • the stiffening rib 36 may have a groove for a seal for sealing the two housing halves 16, 17 against each other.
  • the stiffening rib 36 thus also extends along the lateral surface 6 of the main body 4.
  • the direction of rotation of the fan 27 is designated 37.
  • FIG. 1 shows semicircular stiffening ribs 41 which each surround a fastening point 22.
  • the semicircles formed thereby are open towards the air inlet 7.
  • stiffening ribs 30, 31, 32, 33 and 41 have in common that they are directly adjacent to the air inlet 7.
  • a stiffening rib 42 is further illustrated, which extends in sections annularly around the central axis 1 1. Furthermore, the stiffening rib 42 may be thickened lengthwise, as also shown for the stiffening rib 42 in FIG. The stiffening rib 42 also extends on the edge 5 of the housing 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a housing (1) for a radial fan (2) of an extractor hood (3), comprising an air inlet (7, 8) which is delimited by an edge (5) that has at least one reinforcing rib (30, 31, 32, 33, 36, 41, 42).

Description

Gehäuse für ein Radialgebläse einer Dunstabzugshaube  Housing for a radial fan of an extractor hood
Die vorliegende Erfindung betrifft ein Gehäuse für ein Radialgebläse einer Dunstabzugshaube. Beispielsweise beschreibt die DE 90 16 767 U1 eine Dunstabzugshaube mit einem Radialgebläse. Das Radialgebläse umfasst ein Gehäuse und einen Gebläsemotor. Der Gebläsemotor wird mittels einer Motoraufhängung an dem Gehäuse gehalten. Die Motoraufhängung umfasst drei Arme, welche jeweils an dem Gehäuse angeflanscht sind. Die Arme erstrecken sich von ihrem jeweiligen Befestigungsabschnitt an dem Gehäuse in ein Lüfterrad hinein, welches den Gebläsemotor umgibt. Das Gehäuse ist als doppelflutiges Spiralgehäuse ausgeführt. Angesaugte Luft fließt im Wesentlichen axial über Lufteinlässe zu beiden Seiten des Lüfterrads in dieses hinein und wird radial über einen Luftauslass mit einem höheren Druck abgegeben. Es ist allgemein bekannt, dass solche Gehäuse im Betrieb des Radialgebläses schwingen und dabei störende Geräusche entstehen können. Gleichzeitig gilt es, den Lufteinlass so wenig wie möglich zu versperren, insbesondere um die Effizienz des Radialgebläses nicht zu mindern. Eine Aufgabe der vorliegenden Erfindung besteht somit darin, ein Gehäuse für ein Radialgebläse einer Dunstabzugshaube bereitzustellen, welches im Betrieb möglichst wenig störende Geräusche erzeugt und gleichzeitig effizient ist. The present invention relates to a housing for a radial fan of an extractor hood. For example, DE 90 16 767 U1 describes an extractor hood with a radial fan. The radial fan comprises a housing and a blower motor. The blower motor is held on the housing by means of a motor suspension. The engine mounting comprises three arms, which are each flanged to the housing. The arms extend from their respective attachment portion on the housing into a fan wheel which surrounds the fan motor. The housing is designed as a double-flow spiral housing. Sucked air flows substantially axially through air inlets on both sides of the fan wheel into it and is discharged radially via an air outlet at a higher pressure. It is well known that such housing oscillate during operation of the radial fan and thereby disturbing noises can occur. At the same time, it is important to block the air intake as little as possible, in particular so as not to reduce the efficiency of the radial fan. It is therefore an object of the present invention to provide a housing for a radial fan of an extractor hood, which generates as little annoying noise as possible during operation and at the same time is efficient.
Demgemäß wird ein Gehäuse für ein Radialgebläse einer Dunstabzugshaube mit einem Lufteinlass bereitgestellt. Der Lufteinlass ist von einem Rand begrenzt, der zumindest eine Versteifungsrippe aufweist. Accordingly, a housing for a radial fan of an extractor hood is provided with an air inlet. The air inlet is bounded by an edge which has at least one stiffening rib.
Vorteilhaft mindert die zumindest eine Versteifungsrippe ein Schwingen des Gehäuses, so dass weniger störende Geräusche erzeugt werden. Ferner lässt sich eine solche Verstei- fungsrippe derart anordnen, dass sie den Luftstrom beim Einströmen in den Lufteinlass nur wenig oder gar nicht stört. Mit anderen Worten ist die Versteifungsrippe auf den Rand aufgesetzt ist, steht also über den Rand über. Mit„Rand" ist diejenige Fläche gemeint, welche direkt an den Lufteinlass, das heißt an eine entsprechende Öffnung im Gehäuse, in der das Lüfterrad angeordnet ist, angrenzt. Es können mehrere Versteifungsrippen vorgesehen sein. Die Versteifungsrippen bedecken weniger als 50 %, bevorzugt weniger als 80 % und weiter bevorzugt we- niger als 90 % des Rands. Advantageously, the at least one stiffening rib reduces vibration of the housing, so that less disturbing noises are generated. Furthermore, such a stiffening rib can be arranged such that it only slightly or not at all disturbs the air flow when it flows into the air inlet. In other words, the stiffening rib is placed on the edge, so it is over the edge over. By "edge" is meant that surface which directly adjoins the air inlet, that is to say a corresponding opening in the housing in which the fan wheel is arranged, and a plurality of stiffening ribs may be provided.The stiffening ribs cover less than 50%, preferably less as 80% and more preferably less than 90% of the rim.
Ferner kann das Radialgebläse als doppelflutiges Radialgebläse ausgebildet sein. In diesem Fall weist das Gehäuse zwei sich gegenüberliegende Lufteinlässe auf. Jeder der Lufteinlässe kann von einem Rand begrenzt sein, der zumindest eine Versteifungsrippe aufweist. Furthermore, the radial fan may be formed as a double-flow radial fan. In this case, the housing has two opposing air inlets. Each of the air inlets may be bounded by an edge having at least one stiffening rib.
Die Dunstabzugshaube ist als Haushaltsgerät ausgebildet. The hood is designed as a household appliance.
Gemäß einer Ausführungsform umfasst das Gehäuse einen spiralförmigen Grundkörper, welcher den Lufteinlass und den Rand aufweist. In dem Grundkörper ist ein spiralförmiger, sich erweiternder Ringraum ausgebildet, welcher das Lüfterrad umgibt und sich hin zu dem Luftauslass erstreckt. According to one embodiment, the housing comprises a spiral-shaped base body, which has the air inlet and the edge. In the main body, a spiral, expanding annular space is formed, which surrounds the fan and extends to the air outlet.
Gemäß einer weiteren Ausführungsform ist der spiralförmige Grundkörper in Form eines spiralförmigen Zylinders ausgebildet, welcher an einer seiner Stirnflächen den Rand ausbildet. Die Stirnflächen erstrecken sich bevorzugt radial zu einer Drehachse des Lüfterrads. Die zwischen den Stirnflächen gebildete Mantelfläche ist beispielsweise von dem Luftauslass durchbrochen. Ferner kann die Mantelfläche eine Trennebene zwischen zwei das Gehäuse bildenden Gehäusehälften aufweisen. According to a further embodiment, the spiral-shaped basic body is designed in the form of a spiral-shaped cylinder which forms the edge on one of its end faces. The end faces preferably extend radially to a rotational axis of the fan wheel. The lateral surface formed between the end faces is broken, for example, by the air outlet. Furthermore, the lateral surface may have a parting plane between two housing halves forming the housing.
Gemäß einer weiteren Ausführungsform ist der Lufteinlass kreisrund ausgeführt. Die zumindest eine Versteifungsrippe erstreckt sich radial bezogen auf eine Mittelachse des Lufteinlasses oder parallel zu einer Radialen bezogen auf die Mittelachse. Eine derartige Versteifungsrippe ist geeignet, den Luftstrom hin zum Lufteinlass zu leiten und diesen insbesondere nicht zu versperren. Gleichzeitig sorgt eine solche Versteifungsrippe für eine Versteifung des Gehäuses, insbesondere des Rands. Gemäß einer weiteren Ausführungsform erstreckt sich die zumindest eine Versteifungsrippe gleichsinnig spiralförmig mit dem spiralförmigen Grundkörper. Mit anderen Worten definiert die zumindest eine Versteifungsrippe einen Abschnitt einer Spirale, welche in der gleichen Drehrichtung einen spiralförmigen Verlauf aufweist wie der spiralförmige Grundkörper. According to a further embodiment, the air inlet is circular. The at least one stiffening rib extends radially with respect to a central axis of the air inlet or parallel to a radial with respect to the central axis. Such a stiffening rib is suitable for directing the air flow towards the air inlet and in particular not obstructing it. At the same time, such a stiffening rib ensures stiffening of the housing, in particular the edge. According to a further embodiment, the at least one stiffening rib extends in the same direction spirally with the spiral base body. In other words, the at least one stiffening rib defines a portion of a spiral, which has a spiral course in the same direction of rotation as the spiral-shaped base body.
Gemäß einer weiteren Ausführungsform grenzt die zumindest eine Versteifungsrippe direkt an den Lufteinlass an. Dadurch kann der Luftstrom ohne Verwirbelungen in den Luft- einlass hineingeführt werden. Gemäß einer weiteren Ausführungsform erstreckt sich die zumindest eine Versteifungsrippe zu einem Luftauslass des Gehäuses hin. Insbesondere kann sich die Versteifungsrippe entlang eines Kragens erstrecken, welcher ein den Luftauslass definierendes Rohr mit dem spiralförmigen Grundkörper verbindet. Gemäß einer weiteren Ausführungsform erstreckt sich die zumindest eine Versteifungsrippe bis über eine Mantelfläche des spiralförmigen Zylinders. Dadurch kann auch die Mantelfläche versteift werden. According to a further embodiment, the at least one stiffening rib directly adjoins the air inlet. As a result, the air flow can be guided into the air inlet without turbulence. According to a further embodiment, the at least one stiffening rib extends towards an air outlet of the housing. In particular, the stiffening rib may extend along a collar, which connects a tube defining the air outlet with the spiral-shaped base body. According to a further embodiment, the at least one stiffening rib extends over a lateral surface of the spiral cylinder. As a result, the lateral surface can be stiffened.
Gemäß einer weiteren Ausführungsform erstreckt sich die zumindest eine Versteifungs- rippe in Form eines Ringabschnitts auf dem Rand. According to a further embodiment, the at least one stiffening rib in the form of a ring section extends on the edge.
Gemäß einer weiteren Ausführungsform verdickt sich die zumindest eine Versteifungsrippe ihrer Länge nach. Dadurch können unterschiedliche Bereiche des Rands einfach bedarfsabhängig verstärkt werden. According to a further embodiment, the at least one stiffening rib thickens along its length. As a result, different areas of the edge can be easily reinforced as needed.
Gemäß einer weiteren Ausführungsform weist der Rand zumindest eine Befestigungsstelle für ein Befestigen einer Motoraufhängung auf, welche von der zumindest einen Versteifungsrippe umgeben ist. Dadurch werden Verwirbelungen im Bereich der Befestigungsstelle vermieden. Gleichzeitig kann die Versteifungsrippe auch als Positionierhilfe dienen. Die Motoraufhängung kann an der Befestigungsstelle insbesondere mittels einer Schraube angeflanscht werden. Gemäß einer weiteren Ausführungsform erstreckt sich die zumindest eine Versteifungsrippe in Form eines halbkreisförmigen Bogens um die Befestigungsstelle. Dadurch wird eine gute Abschirmung der Befestigungsstelle erzielt, so dass sich hier nur wenig Luftwirbelungen bilden. Der entsprechende Halbkreis kann zum Lufteinlass hin offen ausgebildet sein. According to a further embodiment, the edge has at least one attachment point for fastening an engine mount, which is surrounded by the at least one stiffening rib. As a result, turbulence in the region of the attachment point can be avoided. At the same time, the stiffening rib can also serve as a positioning aid. The engine mount can be flanged to the attachment point in particular by means of a screw. According to a further embodiment, the at least one stiffening rib in the form of a semicircular arc extends around the fastening point. As a result, a good shielding of the attachment point is achieved, so that form little air turbulence here. The corresponding semicircle may be open to the air inlet.
Gemäß einer weiteren Ausführungsform setzt sich das Gehäuse aus zwei Gehäusehälften zusammen, welche axial miteinander verbunden sind. Entlang einer Trennebene ist eine weitere Versteifungsrippe ausgebildet. Die Versteifungsrippe kann eine Dichtung aufnehmen, welche die beiden Gehäusehälften gegeneinander abdichtet. According to a further embodiment, the housing is composed of two housing halves, which are axially connected to each other. Along a parting plane, a further stiffening rib is formed. The stiffening rib can receive a seal, which seals the two housing halves against each other.
Weiterhin wird eine Dunstabzugshaube mit einem Radialgebläse bereitgestellt. Die Dunstabzugshaube weist ein vorstehend beschriebenes Gehäuse auf. Furthermore, an extractor hood is provided with a radial fan. The extractor hood has a housing described above.
Gemäß einer Ausführungsform ist in dem Gehäuse ein Lüfterrad sowie ein das Lüfterrad antreibender Gebläsemotor angeordnet. Die zumindest eine Versteifungsrippe krümmt sich in Drehrichtung des Lüfterrads im Betrieb des Radialgeblässes. Das Krümmen ist hier so zu verstehen, dass sich die zumindest eine Versteifungsrippe weg von einer Radialen (bezogen auf eine Drehachse des Lüfterrads) in der Drehrichtung krümmt. Dadurch können Verwirbelungen und damit eine Geräuschbildung reduziert werden. According to one embodiment, a fan wheel and a blower motor driving the fan wheel are arranged in the housing. The at least one stiffening rib curves in the direction of rotation of the fan during operation of the Radialgeblässes. The curvature is to be understood here as meaning that the at least one stiffening rib curves away from a radial (in relation to an axis of rotation of the fan wheel) in the direction of rotation. As a result, turbulences and thus noise can be reduced.
Weitere mögliche Implementierungen der Erfindung umfassen auch nicht explizit genannte Kombinationen von zuvor oder im Folgenden bezüglich der Ausführungsbeispiele beschriebenen Merkmale oder Ausführungsformen des Gehäuses oder der Dunstabzugshaube. Dabei wird der Fachmann auch Einzelaspekte als Verbesserungen oder Ergän- zungen zu der jeweiligen Grundform der Erfindung hinzufügen oder abändern. Further possible implementations of the invention also include not explicitly mentioned combinations of features or embodiments of the housing or of the extractor hood described above or below with regard to the exemplary embodiments. The person skilled in the art will also add or modify individual aspects as improvements or additions to the respective basic form of the invention.
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 beigelegten Figuren näher erläutert. Further advantageous embodiments and aspects of the invention are the subject of the dependent claims and the embodiments of the invention described below. Furthermore, the invention will be explained in more detail by means of preferred embodiments with reference to the attached figures.
Es zeigt dabei: Fig. 1 : in einer perspektivischen Ansicht ein Gehäuse für ein Radialgebläse einer Dunstabzugshaube; und It shows: 1 shows a perspective view of a housing for a radial fan of an extractor hood; and
Fig. 2: in einer perspektivischen Ansicht ausschnittsweise eine Dunstabzugshaube mit einem Radialgebläse. Fig. 2: a perspective view of a partial extractor hood with a radial fan.
In den Figuren sind gleiche oder funktionsgleiche Elemente mit denselben Bezugszeichen versehen worden, sofern nichts anderes angegeben ist. In the figures, the same or functionally identical elements have been given the same reference numerals, unless stated otherwise.
Fig. 1 zeigt in einer perspektivischen Ansicht ein Gehäuse 1 für ein in Fig. 2 gezeigtes Radialgebläse 2 einer schematisch dargestellten Dunstabzugshaube 3. 1 shows a perspective view of a housing 1 for a radial fan 2 shown in FIG. 2 of a schematically illustrated extractor hood 3.
Das Gehäuse 1 umfasst einen spiralförmigen Grundkörper 4 in Form eines spiralförmigen Zylinders mit Stirnflächen 5 (in Figur 1 ist aufgrund der Darstellung nur die vordere Stirnfläche 5 zu sehen). Zwischen den Stirnflächen 5 bildet der Grundkörper 4 eine Mantelflä- che 6 aus. Die Stirnflächen 5 bilden jeweils einen Rand aus, welcher einen Lufteinlass 7, 8 begrenzt. The housing 1 comprises a spiral-shaped main body 4 in the form of a spiral-shaped cylinder with end faces 5 (in FIG. 1, only the front end face 5 can be seen due to the illustration). Between the end faces 5, the main body 4 forms a jacket surface 6. The end faces 5 each form an edge which delimits an air inlet 7, 8.
Die Lufteinlässe 7, 8 liegen sich gegenüber. Die Lufteinlässe 7, 8 können jeweils als kreisrunde Öffnungen mit einer Mittelachse 1 1 ausgebildet sein. Im Inneren des spiralförmigen Grundkörpers 4 ist ein sich spiralförmig erweiternder Ringraum 12 ausgebildet, welcher sich hin zu einem radialen Luftauslass 13 erweitert. Der Luftauslass 13 kann von einem Rohr 14 begrenzt sein, welches über einen Kragen 15 an die Mantelfläche 6 des spiralförmigen Grundkörpers 4 anschließt. Das Gehäuse 1 kann sich aus zwei Gehäusehälften 16, 17 zusammensetzen, welche entlang einer Trennebene 18 axial miteinander verbunden werden. „Axial" bezieht sich vorliegend auf die Mittelachse 1 1 , welche identisch mit einer Drehachse eines in Figur 2 gezeigten Gebläsemotors 21 ist. Die Trennebene 18 erstreckt sich radial zur Mittelachse 1 1. The air inlets 7, 8 are opposite. The air inlets 7, 8 can each be formed as circular openings with a central axis 1 1. In the interior of the spiral-shaped main body 4, a spirally expanding annular space 12 is formed, which widens toward a radial air outlet 13. The air outlet 13 may be bounded by a tube 14, which connects via a collar 15 to the lateral surface 6 of the spiral-shaped main body 4. The housing 1 may be composed of two housing halves 16, 17, which are connected together axially along a parting plane 18. "Axial" refers in the present case to the central axis 1 1, which is identical to a rotational axis of a fan motor 21 shown in Figure 2. The parting plane 18 extends radially to the central axis 1 1.
Der Rand 5 kann ferner beispielsweise drei Befestigungsstellen 22 für ein Anflanschen einer in Figur 2 gezeigten Motoraufhängung 23 aufweisen. Die Motoraufhängung 23 kann beispielsweise drei Tragarme 24 aufweisen, welche sich beispielsweise einstückig an eine Aufnahme 25 für den Gebläsemotor 21 anschließen. Die Aufnahme 25 hält dabei den Rotor (nicht gezeigt) des Gebläsemotors 21 drehbar gegenüber einem Stator 26 des Gebläsemotors 21 . Die Motoraufhängung 23 kann somit auch gleichzeitig einen Lagerschild des Gebläsemotors 21 ausbilden. Insbesondere sind die Tragarme 24 derart ausgebildet, dass sie den Gebläsemotor 21 (hier insbesondere den Rotor und den Stator 26) konzent- risch mit der Mittelachse 1 1 halten. Die Mittelachse 1 1 ist auch gleichzeitig die Drehachse eines in dem Gehäuse 1 angeordneten Lüfterrads 27, welches der Gebläsemotor 21 antreibt. Weiterhin positionieren die Tragarme 24 den Gebläsemotor 21 auch axial (bezogen auf die Mittelachse 1 1 ) innerhalb des Lüfterrads 27 und damit auch innerhalb des Gehäuses 1. The edge 5 may further comprise, for example, three attachment points 22 for flanging a motor suspension 23 shown in FIG. The engine mount 23 may, for example, three support arms 24 which, for example, in one piece to a Connect mount 25 for blower motor 21. The receptacle 25 holds the rotor (not shown) of the blower motor 21 rotatably relative to a stator 26 of the blower motor 21. The engine mount 23 can thus simultaneously form a bearing plate of the blower motor 21. In particular, the support arms 24 are designed such that they hold the blower motor 21 (here in particular the rotor and the stator 26) concentric with the central axis 1 1. The central axis 1 1 is also the axis of rotation of a fan disposed in the housing 1 27, which drives the fan motor 21 at the same time. Furthermore, the support arms 24 also position the blower motor 21 axially (with respect to the central axis 1 1) within the fan 27 and thus also within the housing 1.
Nun zurückkehrend zu Figur 1 ist dort gezeigt, dass der Rand 5 mehrere, beispielsweise mehr als zehn Versteifungsrippen aufweisen kann. Die Versteifungsrippen sind in Form von Stegen ausgebildet und nehmen beispielsweise weniger als 95 % der Fläche des Rands 5 auf. Beispielhaft werden nachfolgend einige der Versteifungsrippen näher be- schrieben und sind dazu mit 30, 31 , 32, 33, 36, 41 und 42 bezeichnet. Returning now to FIG. 1, there is shown that the edge 5 can have several, for example more than ten, stiffening ribs. The stiffening ribs are in the form of webs and, for example, take up less than 95% of the surface of the edge 5. By way of example, some of the stiffening ribs are described in more detail below and are denoted by 30, 31, 32, 33, 36, 41 and 42 for this purpose.
Die Versteifungsrippe 30 kann sich radial (bezogen auf die Mittelachse 1 1 ) erstrecken. The stiffening rib 30 may extend radially (relative to the central axis 1 1).
Beispielsweise erstreckt sich die Versteifungsrippe 31 parallel zu einer Radialen 34 (be- zogen auf die Mittelachse bzw. Drehachse 1 1 ). For example, the reinforcing rib 31 extends parallel to a radial 34 (relative to the central axis or axis of rotation 11).
Die Versteifungsrippe 32 krümmt sich spiralförmig um eine mit 35 bezeichnete Drehachse, und zwar gleichsinnig mit dem spiralförmigen Grundkörper 4. Ferner ist zu erkennen, dass sich die Versteifungsrippe 32 sowohl über den Rand 5 als auch über die Mantelflä- che 6 erstreckt. The reinforcing rib 32 curves spirally about an axis of rotation designated 35, in the same direction as the spiral-shaped basic body 4. It can also be seen that the reinforcing rib 32 extends both over the edge 5 and over the lateral surface 6.
Die Versteifungsrippe 33 erstreckt sich von dem Rand 5 über den Kragen 15. The stiffening rib 33 extends from the edge 5 via the collar 15.
Figur 1 zeigt weiterhin eine Versteifungsrippe 36, welche entlang der Trennebene 18 zwi- sehen den beiden Gehäusehälften 16, 17 ausgebildet ist. Die Versteifungsrippe 36 kann eine Nut für eine Dichtung zur Abdichtung der beiden Gehäusehälften 16, 17 gegeneinander aufweisen. Die Versteifungsrippe 36 erstreckt sich somit auch entlang der Mantelfläche 6 des Grundkörpers 4. In Figur 1 ist die Drehrichtung des Lüfterrads 27 mit 37 bezeichnet. Mehrere der Versteifungsrippen, wie beispielsweise für die Versteifungsrippe 36 illustriert, krümmen sich von der Radialen 34 weg in Drehrichtung 37 des Lüfterrads 27. Figure 1 further shows a stiffening rib 36, which see along the parting plane 18 between the two housing halves 16, 17 is formed. The stiffening rib 36 may have a groove for a seal for sealing the two housing halves 16, 17 against each other. The stiffening rib 36 thus also extends along the lateral surface 6 of the main body 4. In Figure 1, the direction of rotation of the fan 27 is designated 37. Several of the stiffening ribs, as illustrated for example for the stiffening rib 36, curve away from the radial 34 in the direction of rotation 37 of the fan 27.
Weiterhin zeigt Figur 1 halbkreisförmige Versteifungsrippen 41 , welche jeweils eine Befes- tigungsstelle 22 umgeben. Die dabei gebildeten Halbkreise sind hin zu dem Lufteinlass 7 offen ausgebildet. Furthermore, FIG. 1 shows semicircular stiffening ribs 41 which each surround a fastening point 22. The semicircles formed thereby are open towards the air inlet 7.
Die vorbeschriebenen Versteifungsrippen 30, 31 , 32, 33 und 41 ist gemein, dass sie direkt an den Lufteinlass 7 angrenzen. The above-described stiffening ribs 30, 31, 32, 33 and 41 have in common that they are directly adjacent to the air inlet 7.
Anhand von Figur 1 ist ferner eine Versteifungsrippe 42 illustriert, welche sich abschnittsweise ringförmig um die Mittelachse 1 1 erstreckt. Weiterhin kann sich die Versteifungsrippe 42 ihrer Länge nach verdicken, wie ebenfalls für die Versteifungsrippe 42 in Figur 2 dargestellt. Die Versteifungsrippe 42 erstreckt sich ebenfalls auf dem Rand 5 des Gehäu- ses 1. On the basis of Figure 1, a stiffening rib 42 is further illustrated, which extends in sections annularly around the central axis 1 1. Furthermore, the stiffening rib 42 may be thickened lengthwise, as also shown for the stiffening rib 42 in FIG. The stiffening rib 42 also extends on the edge 5 of the housing 1.
Obwohl die vorliegende Erfindung anhand von Ausführungsbeispielen beschrieben wurde, ist sie vielfältig modifizierbar. Although the present invention has been described with reference to embodiments, it is variously modifiable.
Verwendete Bezugszeichen: Used reference signs:
1 Gehäuse 1 housing
2 Radialgebläse 2 radial fans
3 Dunstabzugshaube3 extractor hood
4 Grundkörper4 main body
5 Stirnfläche5 face
6 Mantelfläche6 lateral surface
7 Lufteinlass7 air intake
8 Lufteinlass8 air intake
1 1 Mittelachse1 1 central axis
12 Ringraum 12 annulus
13 Luftauslass 13 air outlet
14 Rohr 14 pipe
15 Kragen  15 collar
16 Gehäusehälfte 16 housing half
17 Gehäusehälfte17 housing half
18 Trennebene18 parting plane
21 Gebläsemotor21 blower motor
22 Befestigungsstelle22 attachment point
23 Motoraufhängung23 engine mount
24 Tragarm 24 support arm
25 Aufnahme 25 recording
26 Stator 26 stator
27 Lüfterrad  27 fan wheel
30 Versteifungsrippe 30 stiffening rib
31 Versteifungsrippe31 stiffening rib
32 Versteifungsrippe32 stiffening rib
33 Versteifungsrippe33 stiffening rib
34 Radiale 34 radials
35 Drehachse 35 axis of rotation
36 Versteifungsrippe36 stiffening rib
37 Drehrichtung37 direction of rotation
41 Versteifungsrippe 42 Versteifungsrippe 41 stiffening rib 42 stiffening rib

Claims

PATENTANSPRÜCHE
1. Gehäuse (1 ) für ein Radialgebläse (2) einer Dunstabzugshaube (3), mit einem Luftein- lass (7, 8), welcher von einem Rand (5) begrenzt ist, der zumindest eine Versteifungsrippe (30, 31 , 32, 33, 36, 41 , 42) aufweist. 1. Housing (1) for a radial fan (2) of an extractor hood (3), with an air inlet (7, 8) which is bounded by an edge (5), the at least one stiffening rib (30, 31, 32, 33, 36, 41, 42).
2. Gehäuse nach Anspruch 1 , gekennzeichnet durch einen spiralförmigen Grundkörper (4), weicher den Lufteinlass (7, 8) und den Rand (5) aufweist. 2. Housing according to claim 1, characterized by a spiral-shaped base body (4), softer the air inlet (7, 8) and the edge (5).
3. Gehäuse nach Anspruch 2, dadurch gekennzeichnet, dass der spiralförmige Grundkör- per (4) in Form eines spiralförmigen Zylinders ausgebildet ist, welcher an einer seiner3. Housing according to claim 2, characterized in that the spiral-shaped basic body (4) in the form of a spiral-shaped cylinder is formed, which at one of its
Stirnflächen (5) den Rand ausbildet. End faces (5) forms the edge.
4. Gehäuse nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, dass der Lufteinlass (7, 8) kreisrund ausgeführt ist und sich die zumindest eine Versteifungsrippe (30, 31 ) radial bezogen auf eine Mittelachse (1 1 ) des Lufteinlasses (7, 8) oder parallel zu einer Radialen (34) bezogen auf die Mittelachse (1 1 ) erstreckt. 4. Housing according to one of claims 1 - 3, characterized in that the air inlet (7, 8) is designed circular and the at least one stiffening rib (30, 31) radially relative to a central axis (1 1) of the air inlet (7, 8) or parallel to a radial (34) with respect to the central axis (1 1) extends.
5. Gehäuse nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass sich die zumindest eine Versteifungsrippe (32, 36) gleichsinnig spiralförmig mit dem spiralförmigen Grund- körper (4) erstreckt. 5. Housing according to claim 2 or 3, characterized in that extending the at least one stiffening rib (32, 36) in the same direction spirally with the spiral-shaped base body (4).
6. Gehäuse nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, dass die zumindest eine Versteifungsrippe (30, 31 , 32, 33, 36, 41 ) direkt an den Lufteinlass (7, 8) angrenzt. 6. Housing according to one of claims 1-5, characterized in that the at least one stiffening rib (30, 31, 32, 33, 36, 41) directly adjacent to the air inlet (7, 8).
7. Gehäuse nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, dass sich die zumindest eine Versteifungsrippe (33) zu einem Luftauslass (13) des Gehäuses (1 ) hin erstreckt. 7. Housing according to one of claims 1-6, characterized in that the at least one stiffening rib (33) extends to an air outlet (13) of the housing (1).
8. Gehäuse nach einem der Ansprüche 3 - 7, dadurch gekennzeichnet, dass sich die zumindest eine Versteifungsrippe (32, 36) über eine Mantelfläche (6) des spiralförmigen Zylinders (4) erstreckt. 8. Housing according to one of claims 3 - 7, characterized in that extending the at least one stiffening rib (32, 36) via a lateral surface (6) of the spiral-shaped cylinder (4).
9. Gehäuse nach einem der Ansprüche 1 - 7, dadurch gekennzeichnet, dass sich die zumindest eine Versteifungsrippe (42) in Form eines Ringabschnitts auf dem Rand (5) erstreckt. 9. Housing according to one of claims 1-7, characterized in that extending at least one stiffening rib (42) in the form of a ring portion on the edge (5).
10. Gehäuse nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, dass sich die zumindest eine Versteifungsrippe (42) ihrer Länge nach verdickt. 10. Housing according to one of claims 1-8, characterized in that the at least one stiffening rib (42) thickened in length.
1 1. Gehäuse nach einem der Ansprüche 1 - 10, dadurch gekennzeichnet, dass der Rand (5) zumindest eine Befestigungsstelle (22) für ein Befestigen einer Motoraufhängung (23) des Radialgebläses (2) aufweist, welche von der zumindest einen Versteifungsrippe (41 ) umgeben ist. 1 1. Housing according to one of claims 1-10, characterized in that the edge (5) has at least one attachment point (22) for fixing an engine mount (23) of the radial fan (2), which of the at least one stiffening rib (41 ) is surrounded.
12. Gehäuse nach Anspruch 1 1 , dadurch gekennzeichnet, dass sich die zumindest eine Versteifungsrippe (41 ) in Form eines halbkreisförmigen Bogens um die Befestigungsstelle (22) erstreckt. 12. Housing according to claim 1 1, characterized in that extending at least one stiffening rib (41) in the form of a semicircular arc around the attachment point (22).
13. Gehäuse nach einem der Ansprüche 1 - 12, dadurch gekennzeichnet, dass sich das Gehäuse (1 ) aus zwei Gehäusehälften (16, 17) zusammensetzt, welche axial miteinander verbunden sind, und dass entlang einer Trennebene (18) eine weitere Versteifungsrippe13. Housing according to one of claims 1-12, characterized in that the housing (1) consists of two housing halves (16, 17), which are axially connected to each other, and that along a parting plane (18) has a further stiffening rib
(36) ausgebildet ist. (36) is formed.
14. Dunstabzugshaube (3) mit einem Radialgebläse (2), welches ein Gehäuse (1 ) nach einem der Ansprüche 1 - 13 aufweist. 14. Extractor hood (3) with a radial fan (2), which has a housing (1) according to one of claims 1-13.
15. Dunstabzugshaube nach Anspruch 14, dadurch gekennzeichnet, dass in dem Gehäu- se (1 ) ein Lüfterrad (27) sowie ein das Lüfterrad (27) antreibender Gebläsemotor (21 ) angeordnet ist und dass sich die zumindest eine Versteifungsrippe (32, 36) in Drehrichtung15. Extractor hood according to claim 14, characterized in that in the housing (1) a fan wheel (27) and a blower motor (27) driving the blower motor (21) is arranged and that the at least one stiffening rib (32, 36) in the direction of rotation
(37) des Lüfterrads (27) im Betrieb des Radialgebläses (2) krümmt. (37) of the fan wheel (27) during operation of the radial fan (2) curves.
EP14705783.0A 2013-03-11 2014-02-21 Housing for a radial fan of an extractor hood Active EP2971792B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013204144.6A DE102013204144A1 (en) 2013-03-11 2013-03-11 Housing for a radial fan of an extractor hood
PCT/EP2014/053466 WO2014139780A1 (en) 2013-03-11 2014-02-21 Housing for a radial fan of an extractor hood

Publications (2)

Publication Number Publication Date
EP2971792A1 true EP2971792A1 (en) 2016-01-20
EP2971792B1 EP2971792B1 (en) 2019-08-21

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ID=50151291

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Country Status (4)

Country Link
EP (1) EP2971792B1 (en)
CN (1) CN105408637B (en)
DE (1) DE102013204144A1 (en)
WO (1) WO2014139780A1 (en)

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CN106968984B (en) 2015-12-11 2020-10-23 松下知识产权经营株式会社 Turbine engine
ITUA20162311A1 (en) * 2016-04-05 2017-10-05 Elica Spa Hob with integrated hood.
CN107701512A (en) * 2017-10-18 2018-02-16 珠海格力电器股份有限公司 Volute, compressor and air conditioner
DE102019115741A1 (en) * 2019-06-11 2020-12-17 Ebm-Papst Landshut Gmbh Stiffened fan housing part for arrangement on a gas fan

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CN105408637A (en) 2016-03-16
WO2014139780A1 (en) 2014-09-18
DE102013204144A1 (en) 2014-09-11
CN105408637B (en) 2020-01-17
EP2971792B1 (en) 2019-08-21

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