EP2242930A1 - Compact fan - Google Patents

Compact fan

Info

Publication number
EP2242930A1
EP2242930A1 EP09712411A EP09712411A EP2242930A1 EP 2242930 A1 EP2242930 A1 EP 2242930A1 EP 09712411 A EP09712411 A EP 09712411A EP 09712411 A EP09712411 A EP 09712411A EP 2242930 A1 EP2242930 A1 EP 2242930A1
Authority
EP
European Patent Office
Prior art keywords
compact
motor mount
spacers
fan
front plate
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
EP09712411A
Other languages
German (de)
French (fr)
Other versions
EP2242930B1 (en
Inventor
Thomas Heli
Jürgen Schöne
Christian Haag
Alfred Korwin
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.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and Co KG
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 Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP2242930A1 publication Critical patent/EP2242930A1/en
Application granted granted Critical
Publication of EP2242930B1 publication Critical patent/EP2242930B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/023Selection of particular materials especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/60Mounting; Assembling; Disassembling
    • F04D29/62Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/60Mounting; Assembling; Disassembling
    • F04D29/62Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626Mounting or removal of fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/50Building or constructing in particular ways
    • F05D2230/53Building or constructing in particular ways by integrally manufacturing a component, e.g. by milling from a billet or one piece construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/40Organic materials
    • F05D2300/43Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the present invention relates to a compact fan according to the preamble of claim 1.
  • Such a compact fan is z. B. from DE-G 90 17 873.4.
  • the present invention is based on the object to realize a montage technically simple and compact design, with improved Strömlingseigenticianen.
  • the front plate and the motor mount are formed as plastic or metal injection molded parts and the spacers are connected as a plastic or metal injection molded completely or partially in one piece with the front panel and / or the motor mount. It is advantageous if the front plate, the motor mount and the spacers form a one-piece injection molded part. It may also be advantageous if the front plate, the motor mount and the spacers are formed from two plastic or metal injection molded parts which can be connected to one another in the region of the spacers.
  • FIG. 2 is a view of the compact fan of FIG. 1 in the viewing direction II in Fig. 1,
  • Fig. 3 is a view of the compact fan of FIG. 2 in the fully assembled
  • Fig. 5 is a view of another embodiment of an inventive
  • Fig. 6 shows a further embodiment of a compact fan according to the invention in
  • Fig. 7 is a view of the compact fan of FIG. 6 in a
  • FIG. 8 shows a view of the fully assembled compact ventilator according to FIG. 6.
  • An inventive compact fan consists of a fan, in particular radial fan 1, which is mounted on a rotor of an external rotor motor 2, in particular is pressed.
  • the fan 1 consists of a front cover plate 3 and a rear cover plate. 4
  • the front cover plate 3 has a circular air inlet opening 7, see Fig. 2.
  • the external rotor motor 2 is mounted with the radial fan 1 between a front plate 8 with an air inlet opening 9 and a motor mount 11, as shown in Fig. 3.
  • the front plate 8 and the motor mount 11 are interconnected by a plurality of circumferentially arranged on the circumference of the two parts 8, 11 spacers 12.
  • the spacers 12 define the width of an air outlet gap 13 formed circumferentially around the radial fan wheel 1.
  • the front plate 8 and the motor mount 11 as well as the spacers 12 are here as one-piece made of plastic or metal existing injection molded part formed.
  • the circular air inlet opening 9 has an inner edge region 14 formed as an inlet nozzle.
  • this inner nozzle region 14 protrudes into the air inlet opening 7 of the front cover disk 3, so that its inner diameter is slightly larger than the outer diameter of the inlet nozzle 14.
  • the external rotor motor 2 is fastened with its stator flange 16 to the motor mount 11 by means of an intermediate mount 17, namely on a peripherally closed edge web 18 of the motor mount 11.
  • the intermediate support 17 has a middle retaining plate 19, to which the motor flange 16 is fastened, for example by means of screws.
  • Extending radially outwardly from the middle retaining disk 19 are a plurality of spoke webs 21, which are connected in the region of their free ends by a circumferential annular web 22.
  • the spoke webs 21 continue with web extensions 23 over the annular web 22 radially outward.
  • the spoke webs 21 are in cross-section as unilaterally open channels, ie formed in cross-section U-shaped, which is useful for strength and material saving reasons.
  • the intermediate support 17 may be made as a plastic injection molded part or as a metal molding, in particular as a metal casting. In the case of training as a metal molding, the intermediate bracket 17 serves as a heat conducting element at the same time.
  • the motor mount 11 has on its side facing away from the front panel 8 side 24 receiving pockets 26 which serve to receive the web extensions 23 in the assembled state of the intermediate bracket 7 on the motor mount 11.
  • four spoke webs 21 are integrally formed on the middle retaining disk 19, wherein these spoke webs 21 each include right angles with their respective extensions.
  • the spoke webs 21 in this case do not run exactly radially, but are each arranged offset radially to the central axis.
  • the annular web 22 is also U-shaped in cross-section as a channel open on one side, again for material saving reasons and for increasing the rigidity.
  • the web extensions 23 On its upper side, the web extensions 23 have lugs 27, which in the mounted state of the intermediate holder 7 in adapted recesses 28 (Fig. 1) in the receiving pockets 26 for the positioning of the parts intervene.
  • the intermediate support 17 connected to the external rotor motor 2 is screwed to the motor mount 11 connected.
  • the external rotor motor 2 preassembled on the intermediate support 17 with the radial fan wheel 1 mounted on it is introduced through a circular receiving opening 29 of the motor mount 11 into the space between the front plate 8 and the motor mount 11.
  • the diameter of the receiving opening 29 is slightly larger than the outer diameter of the Radialzuffterrades 1.
  • the spacers 12 are formed as approximately rectangular cross-section struts with chamfered corners perpendicular to the front panel 8 and the edge web 18th run.
  • the web-shaped spacers 12 have the shape of flow profiles. These are expediently wing profiles that are optimized aerodynamically and aeroacoustically. By avoiding air separations or vortices on the spacer profiles, there are thus no negative effects on the air power and the noise due to the spacers 12 themselves.
  • the flow-profile-like spacers 12 have, as can be seen from Fig. 4, a longitudinal axis X and a transverse axis Y 1 wherein the longitudinal axis X is longer than the transverse axis Y.
  • the flow-profile-shaped spacers 12 are arranged such that they with their rounded Front are aligned opposite to the direction of rotation Z.
  • a further optimization according to the invention consists in optimizing the strut spacing A of the struts from the center point or the center axis M of the radial fan wheel 1, the strut spacing A preferably being dimensioned such that: 1, 05 x R ⁇ A ⁇ 1, 5 R, where R is the radius of the radial fan wheel 1.
  • the air inlet opening 9 of the front panel 8 can be closed by a protective grid 32.
  • the protective grid 32 which is designed in particular as a plastic injection-molded part, by means of a clip connection with the front panel 8 is locked.
  • the front panel 8 is preferably dimensioned such that it projects beyond the motor mount 11 at its outer edge.
  • the compact ventilator according to the invention can be replaced by an insertion opening in a Compact fan receiving wall or a housing are plugged in until the front panel 8 rests against the compact fan receiving wall and the insertion opening is thereby covered.
  • the compact ventilator according to the invention can be fastened in accordance with the screw.
  • the front plate 8 and the motor mount 11 preferably have a square shape, with the corners 30, 35 each being chamfered.
  • FIG. 5 shows an alternative embodiment of a compact ventilator according to the invention with respect to FIGS. 1 to 4.
  • the intermediate holder consists of the middle holding plate 19 and formed on this spoke webs 21.
  • spoke webs 21 which are arcuately shaped in this embodiment.
  • the spoke webs 21 are directly connected to the edge web 18 of the motor mount 11, so that in this embodiment, no annular web is present.
  • the spacers 12 are formed as streamlined, arcuate cross-section struts. In this case, the arc shape is selected such that there is a convex to the interior of the compact fan contour of the arcuate struts.
  • the spacers 12 extend obliquely to the front plate 8 and the edge web 18 and start and end respectively in the corners 30 and 35. Furthermore, it can be seen that a terminal box 40 is partially present in the space between the radial fan 1 and the front panel 8. Instead of a terminal box 40 for the electrical connection, only a simple cable connection can be provided.
  • FIGS. 6 to 8 show a further alternative embodiment of a compact ventilator according to the invention.
  • the front plate 8, the motor mount 11 and the spacers 12 are formed from two plastic or metal injection-molded parts which can be connected to one another in the region of the spacers 12.
  • the motor mount 11 consists of a central support plate 19 for attachment of the stator 16 of an external rotor motor 2. From this central support plate 19 extend approximately radial spoke webs 21 to the outside , which end in a peripherally closed edge web 37. Thus, the edge web 37, the spoke webs 21 and the middle retaining plate 19, the motor mount 11.
  • both the front plate 8 and the motor mount 11 on their sides facing each other sections 38, 39 of the spacer 12.
  • sections 38, 39 can be the same length or different lengths and it is also within the scope of the invention, when either the front plate or on the motor mount 11, the spacers 12 are formed in their entire length.
  • the assembly of the compact fan according to the invention is in this case such that initially the radial fan 1 with the external rotor motor 2 is secured schraubmul on the motor mount 11, on the front panel 8 facing side of the motor mount 11. Thereafter, the motor mount 11 with the front panel in the abutting portions 38, 39 of the spacers 12 connected by, for example, fastening screws are screwed through the sections 39, 39. This is preferably done from the back of the motor mount 11.
  • the intermediate mounting position with the radial fan 1 connected to the engine mount 11 is shown in FIG. Fig.
  • the front plate 8 and the motor mount 11 are manufactured in particular as plastic injection-molded parts.
  • the protective grid 32 can be clipped on or can also be formed in one piece with the front panel 8.
  • the front plate 8 and the motor mount 11, in particular its edge web 18, also have an approximately square peripheral contour, wherein the corners of the square are each bevelled.
  • the invention is not limited to such a configuration of the front panel 8 and the motor mount 11. Both the front plate 8 and the motor mount 11 can be stiffened by ribs 34, 35.
  • the invention is not limited to the illustrated embodiments, but also includes all the same in the context of the invention means. Furthermore, the invention has hitherto not been limited to the feature combination defined in claim 1, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of claim 1 can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claim 1 is to be understood only as a first formulation attempt for an invention.

Abstract

The present invention relates to a compact fan, comprising a fan wheel, in particular a radial fan wheel (1), which is fastened on a rotor of an external rotor motor (82). The fan wheel (1) is supported between a front plate (8) having an air inlet opening (9), which is central, and a motor mount (11). The front plate (8) and the motor mount (11) are connected to one another via multiple spacers (12), which are disposed around the circumference. The front plate (8) and the motor mount (11) are formed as plastic or metal spray parts. The spacers (12) are formed as plastic or metal parts entirely or partially in one piece to the front plate (8) and/or the motor mount (11).

Description

ebm-papst Mulfingen GmbH & Co. KG, Bachmühle 2, 74673 Mulfingen ebm-papst Mulfingen GmbH & Co. KG, Bachmühle 2, 74673 Mulfingen
„Kompaktlüfter""Compact fans"
Die vorliegende Erfindung betrifft einen Kompaktlüfter gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a compact fan according to the preamble of claim 1.
Ein derartiger Kompaktlüfter ist z. B. aus der DE-G 90 17 873.4 bekannt.Such a compact fan is z. B. from DE-G 90 17 873.4.
Ausgehend von einem derartigen Kompaktlüfter liegt der vorliegenden Erfindung die Aufgabe zu Grunde, eine montagetechnisch einfache und kompakte Konstruktion zu verwirklichen, mit verbesserten Strömlingseigenschaften.Based on such a compact fan, the present invention is based on the object to realize a montage technically simple and compact design, with improved Strömlingseigenschaften.
Erfindungsgemäß wird dies dadurch erreicht, dass die Frontplatte und die Motorhalterung als Kunststoff- oder Metallspritzgussteile ausgebildet sind und die Abstandhalter als Kunststoff- oder Metallspritzgussteile ganz oder teilweise einstückig mit der Frontplatte und/oder der Motorhalterung verbunden sind. Hierbei ist es vorteilhaft, wenn die Frontplatte die Motorhalterung und die Abstandhalter ein einstückiges Spritzgussteil bilden. Ebenfalls kann es vorteilhaft sein, wenn die Frontplatte, die Motorhalterung und die Abstandhalter aus zwei miteinander im Bereich der Abstandhalter verbindbaren Kunststoff- oder Metallspritzgussteilen gebildet sind.According to the invention this is achieved in that the front plate and the motor mount are formed as plastic or metal injection molded parts and the spacers are connected as a plastic or metal injection molded completely or partially in one piece with the front panel and / or the motor mount. It is advantageous if the front plate, the motor mount and the spacers form a one-piece injection molded part. It may also be advantageous if the front plate, the motor mount and the spacers are formed from two plastic or metal injection molded parts which can be connected to one another in the region of the spacers.
Somit wird erfindungsgemäß eine herstellungstechnisch einfache Konstruktion geschaffen, da das aus Frontplatte und Motorhalterung gebildete Gehäuse entweder einstückig ist oder nur aus zwei Einzelteilen bestehen kann. Zudem können alle wesentlichen Funktionen in das Gehäuse integriert werden. Vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen enthalten und werden an Hand der in den beiliegenden Zeichnungen dargestellten Ausführungsbeispiele näher erläutert.Thus, a manufacturing technology simple construction is created according to the invention, since the housing formed from the front panel and motor mount is either in one piece or can only consist of two parts. In addition, all essential functions can be integrated into the housing. Advantageous embodiments of the invention are contained in the subclaims and will be explained in more detail with reference to the embodiments illustrated in the accompanying drawings.
In den nachstehenden Figuren sind die gleichen Teile mit denselben Bezugsziffern jeweils gekennzeichnet.In the following figures, the same parts are identified by the same reference numerals.
Es zeigen: Fig. 1 eine Explosionsansicht einer ersten Ausführungsform eines erfindungsgemäßen Kompaktlüfters,Show it: 1 is an exploded view of a first embodiment of a compact fan according to the invention,
Fig. 2 eine Ansicht des Kompaktlüfters gemäß Fig. 1 in Blickrichtung Il in Fig. 1,2 is a view of the compact fan of FIG. 1 in the viewing direction II in Fig. 1,
Fig. 3 eine Ansicht des Kompaktlüfters gemäß Fig. 2 im fertig montiertenFig. 3 is a view of the compact fan of FIG. 2 in the fully assembled
Zustand,Status,
Fig. 4 einen Schnitt entlang der Schnittlinie IV-IV in Fig. 3,4 shows a section along the section line IV-IV in Fig. 3,
Fig. 5 eine Ansicht einer weiteren Ausführungsform eines erfindungsgemäßenFig. 5 is a view of another embodiment of an inventive
Kompaktlüfters,Compact fan
Fig. 6 eine weitere Ausführung eines erfindungsgemäßen Kompaktlüfters inFig. 6 shows a further embodiment of a compact fan according to the invention in
Explosionsdarstellung,Exploded
Fig. 7 eine Ansicht des Kompaktlüfters gemäß Fig. 6 in einerFig. 7 is a view of the compact fan of FIG. 6 in a
Vormontagestellung,pre-assembly,
Fig. 8 eine Ansicht des fertig montierten Kompaktlüfters gemäß Fig. 6.FIG. 8 shows a view of the fully assembled compact ventilator according to FIG. 6.
Ein erfindungsgemäßer Kompaktlüfter besteht aus einem Lüfterrad, insbesondere Radiallüfterrad 1 , das auf einem Rotor eines Außenläufermotors 2 befestigt, insbesondere aufgepresst ist. Das Lüfterrad 1 besteht aus einer vorderen Deckscheibe 3 und einer hinteren Deckscheibe 4.An inventive compact fan consists of a fan, in particular radial fan 1, which is mounted on a rotor of an external rotor motor 2, in particular is pressed. The fan 1 consists of a front cover plate 3 and a rear cover plate. 4
Zwischen diesen beiden Deckscheiben 3, 4 sind rückwärts gekrümmte Schaufeln 6 angeordnet. Die vordere Deckscheibe 3 besitzt eine kreisförmige Lufteinlassöffnung 7, siehe Fig. 2. Im dargestellten Ausführungsbeispiel wird der Außenläufermotor 2 mit dem Radiallüfterrad 1 zwischen einer Frontplatte 8 mit einer Lufteinlassöffnung 9 und einer Motorhalterung 11 gelagert, wie dies in Fig. 3 dargestellt ist. Die Frontplatte 8 und die Motorhalterung 11 sind durch mehrere umfangsgemäß am Umfang der beiden Teile 8, 11 angeordnete Abstandshalter 12 miteinander verbunden. Die Abstandshalter 12 definieren hierbei die Breite eines umfangsgemäß um das Radiallüfterrad 1 herum ausgebildeten Luftaustrittsspaltes 13. Die Frontplatte 8 und die Motorhalterung 11 sowie die Abstandhalter 12 sind hierbei als einstückiges aus Kunststoff oder Metall bestehendes Spritzgussteil ausgebildet. Die kreisförmige Lufteinlassöffnung 9 besitzt einen als Einströmdüse geformten Innenrandbereich 14. Dieser einströmdüsenartige Innenrandbereich 14 (Einströmdüse) ragt im montierten Zustand in die Lufteinlassöffnung 7 der vorderen Deckscheibe 3 hinein, so dass deren Innendurchmesser etwas größer ist als der Außendurchmesser der Einströmdüse 14.Between these two shrouds 3, 4 rearwardly curved blades 6 are arranged. The front cover plate 3 has a circular air inlet opening 7, see Fig. 2. In the illustrated embodiment, the external rotor motor 2 is mounted with the radial fan 1 between a front plate 8 with an air inlet opening 9 and a motor mount 11, as shown in Fig. 3. The front plate 8 and the motor mount 11 are interconnected by a plurality of circumferentially arranged on the circumference of the two parts 8, 11 spacers 12. In this case, the spacers 12 define the width of an air outlet gap 13 formed circumferentially around the radial fan wheel 1. The front plate 8 and the motor mount 11 as well as the spacers 12 are here as one-piece made of plastic or metal existing injection molded part formed. The circular air inlet opening 9 has an inner edge region 14 formed as an inlet nozzle. In the installed state, this inner nozzle region 14 (inlet nozzle) protrudes into the air inlet opening 7 of the front cover disk 3, so that its inner diameter is slightly larger than the outer diameter of the inlet nozzle 14.
Der Außenläufermotor 2 wird mit seinem Statorflansch 16 mittels einer Zwischenhalterung 17 an der Motorhalterung 11 , und zwar an einem umfangsgemäß geschlossenen Randsteg 18 der Motorhalterung 11 befestigt. Die Zwischenhalterung 17 besitzt eine mittlere Haltescheibe 19, an der der Motorflansch 16 beispielsweise mittels Schrauben befestigt wird. Von der mittleren Haltescheibe 19 erstrecken sich etwa radial nach außen mehrere Speichenstege 21 , die im Bereich ihrer freien Enden durch einen umlaufenden Ringsteg 22 verbunden sind. Die Speichenstege 21 setzen sich mit Stegfortsätzen 23 über dem Ringsteg 22 radial nach außen fort. Die Speichenstege 21 sind im Querschnitt als einseitig offene Kanäle, d. h. im Querschnitt U-förmig ausgebildet, was aus Festigkeits- und Materialersparnisgründen zweckmäßig ist. Gleichzeitig kann hierdurch einer der Speichenstege 21 zur Aufnahme eines Motoranschlusskabels dienen. Die Zwischenhalterung 17 kann als Kunststoffspritzgussteil oder als Metallformteil, insbesondere als Metallgussteil hergestellt sein. Im Falle der Ausbildung als Metallformteil dient die Zwischenhalterung 17 gleichzeitig als Wärmeleitelement. Die Motorhalterung 11 besitzt auf ihrer von der Frontplatte 8 abgekehrten Seite 24 Aufnahmetaschen 26, die zur Aufnahme der Stegfortsätze 23 im montierten Zustand der Zwischenhalterung 7 an der Motorhalterung 11 dienen. Im dargestellten Ausführungsbeispiel sind vier Speichenstege 21 an der mittleren Haltescheibe 19 angeformt, wobei diese Speichenstege 21 jeweils mit ihren jeweiligen Verlängerungen rechte Winkel einschließen. Die Speichenstege 21 verlaufen hierbei nicht exakt radial, sondern sind jeweils zur Mittelachse radial versetzt verlaufend angeordnet. Wie die Speichenstege 21 ist auch der Ringsteg 22 im Querschnitt U-förmig als einseitig offener Kanal ausgebildet, und zwar wiederum aus Materialersparnisgründen und zur Erhöhung der Steifigkeit. Eine entsprechend an die Speichenstege 21 angepasste Ausführung besitzt auch die mittlere Haltescheine 19. Auf ihrer Oberseite besitzen die Stegfortsätze 23 Ansätze 27, die im montierten Zustand der Zwischenhalterung 7 in angepasste Vertiefungen 28 (Fig. 1) in den Aufnahmetaschen 26 für die Positionierung der Teile zueinander eingreifen. Die mit dem Außenläufermotor 2 verbundene Zwischenhalterung 17 wird durch Schraubverbindungen mit der Motorhalterung 11 verbunden. Hierzu wird der auf der Zwischenhalterung 17 vormontierte Außenläufermotor 2 mit dem auf diesem befestigten Radiallüfterrad 1 durch eine kreisförmige Aufnahmeöffnung 29 der Motorhalterung 11 in den Zwischenraum zwischen der Frontplatte 8 und der Motorhalterung 11 eingeführt. Hierzu ist der Durchmesser der Aufnahmeöffnung 29 etwas größer als der Außendurchmesser des Radiallüfterrades 1. Wie in Fig. 1 , 2 dargestellt ist, sind die Abstandhalter 12 als etwa im Querschnitt rechteckige Streben mit abgeschrägten Ecken ausgebildet, die senkrecht zur Frontplatte 8 und zum Randsteg 18 verlaufen.The external rotor motor 2 is fastened with its stator flange 16 to the motor mount 11 by means of an intermediate mount 17, namely on a peripherally closed edge web 18 of the motor mount 11. The intermediate support 17 has a middle retaining plate 19, to which the motor flange 16 is fastened, for example by means of screws. Extending radially outwardly from the middle retaining disk 19 are a plurality of spoke webs 21, which are connected in the region of their free ends by a circumferential annular web 22. The spoke webs 21 continue with web extensions 23 over the annular web 22 radially outward. The spoke webs 21 are in cross-section as unilaterally open channels, ie formed in cross-section U-shaped, which is useful for strength and material saving reasons. At the same time this can serve one of the spoke webs 21 for receiving a motor connection cable. The intermediate support 17 may be made as a plastic injection molded part or as a metal molding, in particular as a metal casting. In the case of training as a metal molding, the intermediate bracket 17 serves as a heat conducting element at the same time. The motor mount 11 has on its side facing away from the front panel 8 side 24 receiving pockets 26 which serve to receive the web extensions 23 in the assembled state of the intermediate bracket 7 on the motor mount 11. In the illustrated embodiment, four spoke webs 21 are integrally formed on the middle retaining disk 19, wherein these spoke webs 21 each include right angles with their respective extensions. The spoke webs 21 in this case do not run exactly radially, but are each arranged offset radially to the central axis. Like the spoke webs 21, the annular web 22 is also U-shaped in cross-section as a channel open on one side, again for material saving reasons and for increasing the rigidity. On its upper side, the web extensions 23 have lugs 27, which in the mounted state of the intermediate holder 7 in adapted recesses 28 (Fig. 1) in the receiving pockets 26 for the positioning of the parts intervene. The intermediate support 17 connected to the external rotor motor 2 is screwed to the motor mount 11 connected. For this purpose, the external rotor motor 2 preassembled on the intermediate support 17 with the radial fan wheel 1 mounted on it is introduced through a circular receiving opening 29 of the motor mount 11 into the space between the front plate 8 and the motor mount 11. For this purpose, the diameter of the receiving opening 29 is slightly larger than the outer diameter of the Radialzuffterrades 1. As shown in Fig. 1, 2, the spacers 12 are formed as approximately rectangular cross-section struts with chamfered corners perpendicular to the front panel 8 and the edge web 18th run.
Wie sich insbesondere aus Fig. 4 ergibt, ist es erfindungsgemäß vorteilhaft, wenn die stegförmigen Abstandshalter 12 die Form von Strömungsprofilen besitzen. Hierbei handelt es sich zweckmäßigerweise um Flügelprofile, die aerodynamisch und aeroakustisch optimiert sind. Durch die Vermeidung von Luftablösungen bzw. Wirbeln an den Abstandhalterprofilen ergeben sich somit keine negativen Auswirkungen auf die Luftleistung und das Geräusch durch die Abstandhalter 12 selber. Die strömungsprofilartig ausgebildeten Abstandhalter 12 besitzen, wie dies aus Fig. 4 zu erkennen ist, eine Längsachse X und eine Querachse Y1 wobei die Längsachse X länger ist als die Querachse Y. Die strömungsprofilförmigen Abstandhalter 12 sind dabei derart angeordnet, dass sie mit ihrer abgerundeten Vorderseite entgegen der Drehrichtung Z ausgerichtet sind. Für eine Optimierung des Strömungsverhaltens der Abstandhalter 12 kann es zweckmäßig sein, wenn deren Längsachse X unter einem spitzen Anstellwinkel α vorzugsweise von - 10 ° ≤ α < 60 ° zu einer Tangente T verlaufen, die an dem kreisförmigen Umfang des Radiallüfterrades 1 angelegt ist, bzw. zu der zur Tangente T parallel verlaufenden Geraden P. Eine weitere erfindungsgemäße Optimierung besteht darin, den Strebenabstand A der Streben vom Mittelpunkt bzw. der Mittelachse M des Radiallüfterrades 1 zu optimieren, wobei vorzugsweise der Strebenabstand A derart bemessen ist, dass gilt: 1 ,05 x R ≤ A ≤ 1 ,5 R, wobei R der Radius des Radiallüfterrades 1 ist.As is apparent in particular from FIG. 4, it is advantageous according to the invention if the web-shaped spacers 12 have the shape of flow profiles. These are expediently wing profiles that are optimized aerodynamically and aeroacoustically. By avoiding air separations or vortices on the spacer profiles, there are thus no negative effects on the air power and the noise due to the spacers 12 themselves. The flow-profile-like spacers 12 have, as can be seen from Fig. 4, a longitudinal axis X and a transverse axis Y 1 wherein the longitudinal axis X is longer than the transverse axis Y. The flow-profile-shaped spacers 12 are arranged such that they with their rounded Front are aligned opposite to the direction of rotation Z. For an optimization of the flow behavior of the spacers 12, it may be expedient if their longitudinal axis X at an acute angle of attack α preferably runs from -10 ° ≦ α <60 ° to a tangent T, which is applied to the circular circumference of the radial fan wheel 1, respectively to the straight line P running parallel to the tangent T. A further optimization according to the invention consists in optimizing the strut spacing A of the struts from the center point or the center axis M of the radial fan wheel 1, the strut spacing A preferably being dimensioned such that: 1, 05 x R ≦ A ≦ 1, 5 R, where R is the radius of the radial fan wheel 1.
Wie weiterhin aus Fig. 1 zu erkennen ist, kann die Lufteinlassöffnung 9 der Frontplatte 8 mit einem Schutzgitter 32 verschlossen werden. Hierzu wird das Schutzgitter 32, das insbesondere als Kunststoffspritzgussteil ausgebildet ist, mittels einer Klipsverbindung mit der Frontplatte 8 verrastet. Es ist jedoch auch eine einteilige Ausbildung mit der Frontplatte 8 möglich. Die Frontplatte 8 ist vorzugsweise derart dimensioniert, dass sie die Motorhalterung 11 an ihrem Außenrand umfänglich überragt. Hierdurch kann der erfindungsgemäße Kompaktlüfter durch eine Durchstecköffnung in einer den Kompaktlüfter aufnehmenden Wand oder einem Gehäuse soweit eingesteckt werden, bis die Frontplatte 8 an der den Kompaktlüfter aufnehmenden Wand anliegt und die Durchstecköffnung hierdurch abgedeckt wird. Mittels der Frontplatte 8 kann der erfindungsgemäße Kompaktlüfter schraubgemäß befestigt werden. Die Frontplatte 8 und die Motorhalterung 11 haben vorzugsweise eine quadratische Form, wobei die Ecken 30, 35 jeweils abgeschrägt sind.As can furthermore be seen from FIG. 1, the air inlet opening 9 of the front panel 8 can be closed by a protective grid 32. For this purpose, the protective grid 32, which is designed in particular as a plastic injection-molded part, by means of a clip connection with the front panel 8 is locked. However, it is also a one-piece design with the front panel 8 possible. The front panel 8 is preferably dimensioned such that it projects beyond the motor mount 11 at its outer edge. As a result, the compact ventilator according to the invention can be replaced by an insertion opening in a Compact fan receiving wall or a housing are plugged in until the front panel 8 rests against the compact fan receiving wall and the insertion opening is thereby covered. By means of the front panel 8, the compact ventilator according to the invention can be fastened in accordance with the screw. The front plate 8 and the motor mount 11 preferably have a square shape, with the corners 30, 35 each being chamfered.
In Fig. 5 ist eine alternative Ausführungsform eines erfindungsgemäßen Kompaktlüfters zu den Fig. 1 bis 4 dargestellt. Hierbei besteht die Zwischenhalterung aus der mittleren Haltescheibe 19 und an dieser angeformten Speichenstegen 21. Es sind vier umfangsgemäß gleichförmig verteilte Speichenstege 21 vorhanden, die bei diesem Ausführungsbeispiel bogenförmig geformt sind. Die Speichenstege 21 sind unmittelbar mit dem Randsteg 18 der Motorhalterung 11 verbindbar, so dass bei dieser Ausführungsform kein Ringsteg vorhanden ist. Im dargestellten Ausführungsbeispiel sind die Abstandhalter 12 als strömungsgünstige, im Querschnitt bogenförmige Streben ausgebildet. Dabei ist die Bogenform derart gewählt, dass sich eine zum Inneren des Kompaktlüfters konvexe Kontur der bogenförmigen Streben ergibt. Die Abstandhalter 12 verlaufen schräg zur Frontplatte 8 und zum Randsteg 18 und beginnen bzw. enden jeweils in den Ecken 30 und 35. Weiterhin ist zu erkennen, dass ein Klemmenkasten 40 teilweise im Zwischenraum zwischen dem Radiallüfterrad 1 und der Frontplatte 8 vorhanden ist. An Stelle eines Klemmenkastens 40 für den elektrischen Anschluss kann auch nur ein einfacher Kabelanschluss vorgesehen sein.FIG. 5 shows an alternative embodiment of a compact ventilator according to the invention with respect to FIGS. 1 to 4. Here, the intermediate holder consists of the middle holding plate 19 and formed on this spoke webs 21. There are four circumferentially uniformly distributed spoke webs 21 which are arcuately shaped in this embodiment. The spoke webs 21 are directly connected to the edge web 18 of the motor mount 11, so that in this embodiment, no annular web is present. In the illustrated embodiment, the spacers 12 are formed as streamlined, arcuate cross-section struts. In this case, the arc shape is selected such that there is a convex to the interior of the compact fan contour of the arcuate struts. The spacers 12 extend obliquely to the front plate 8 and the edge web 18 and start and end respectively in the corners 30 and 35. Furthermore, it can be seen that a terminal box 40 is partially present in the space between the radial fan 1 and the front panel 8. Instead of a terminal box 40 for the electrical connection, only a simple cable connection can be provided.
In den Fig. 6 bis 8 ist eine weitere alternative Ausführungsform eines erfindungsgemäßen Kompaktlüfters dargestellt. Bei dieser Ausführungsform ist die Frontplatte 8, die Motorhalterung 11 und die Abstandhalter 12 aus zwei miteinander im Bereich der Abstandhalter 12 verbindbaren Kunststoff- oder Metallspritzgussteilen gebildet. Demnach entfällt bei dieser Ausführungsform eine Zwischenhalterung wie bei den Ausführungsformen gemäß Fig. 1 bis 5. Die Motorhalterung 11 besteht aus einer mittigen Haltescheibe 19 für die Befestigung des Statorflansches 16 eines Außenläufermotors 2. Von dieser mittigen Haltescheibe 19 aus verlaufen etwa radiale Speichenstege 21 nach außen, die in einem umfänglich geschlossenen Randsteg 37 enden. Somit bilden der Randsteg 37, die Speichenstege 21 sowie die mittlere Haltescheibe 19 die Motorhalterung 11. Im dargestellten Ausführungsbeispiel weist sowohl die Frontplatte 8 als auch die Motorhalterung 11 an ihren einander zugekehrten Seiten jeweils Teilstücke 38, 39 der Abstandhalter 12 auf. Diese Teilstücke 38, 39 können gleich lang oder unterschiedlich lang sein und es liegt ebenfalls im Rahmen der Erfindung, wenn entweder auf der Frontplatte oder auf der Motorhalterung 11 die Abstandhalter 12 in ihrer gesamten Länge ausgebildet sind. Die Montage des erfindungsgemäßen Kompaktlüfters erfolgt hierbei derart, dass zunächst das Radiallüfterrad 1 mit dem Außenläufermotor 2 auf der Motorhalterung 11 schraubgemäß befestigt wird, und zwar auf der der Frontplatte 8 zugekehrten Seite der Motorhalterung 11. Danach wird die Motorhalterung 11 mit der Frontplatte im Bereich der aneinanderstoßenden Teilstücke 38, 39 der Abstandhalter 12 verbunden, indem beispielsweise Befestigungsschrauben durch die Teilstücke 39, 39 eingeschraubt werden. Dies geschieht vorzugsweise von der Rückseite der Motorhalterung 11 aus. Die Zwischenmontagestellung, wobei das Radiallüfterrad 1 mit der Motorhalterung 11 verbunden ist, ist in Fig. 7 dargestellt. Fig. 8 zeigt den Fertigstellungszustand des erfindungsgemäßen Kompaktlüfters. Um eine sichere Verbindung der Teilstücke 38, 39 zu erreichen, ist es zweckmäßig, wenn diese an ihren Stoßstellen derart geformt sind, dass sie ineinandergreifen. Bei der in den Fig. 6 bis 8 dargestellten Ausführungsform sind die Frontplatte 8 und die Motorhalterung 11 insbesondere als Kunststoff- Spritzgussteile gefertigt. Das Schutzgitter 32 kann aufklipsbar sein oder auch einstückig mit der Frontplatte 8 ausgebildet sein. In diesem dargestellten Ausführungsbeispiel haben die Frontplatte 8 und die Motorhalterung 11 , insbesondere deren Randsteg 18, auch eine etwa quadratische Umfangskontur, wobei die Ecken des Quadrates jeweils abgeschrägt sind. Jedoch ist die Erfindung auf eine derartige Ausgestaltung der Frontplatte 8 und der Motorhalterung 11 nicht beschränkt. Sowohl die Frontplatte 8 als auch die Motorhalterung 11 können durch Verrippungen 34, 35 versteift werden.FIGS. 6 to 8 show a further alternative embodiment of a compact ventilator according to the invention. In this embodiment, the front plate 8, the motor mount 11 and the spacers 12 are formed from two plastic or metal injection-molded parts which can be connected to one another in the region of the spacers 12. The motor mount 11 consists of a central support plate 19 for attachment of the stator 16 of an external rotor motor 2. From this central support plate 19 extend approximately radial spoke webs 21 to the outside , which end in a peripherally closed edge web 37. Thus, the edge web 37, the spoke webs 21 and the middle retaining plate 19, the motor mount 11. In the illustrated embodiment, both the front plate 8 and the motor mount 11 on their sides facing each other sections 38, 39 of the spacer 12. These sections 38, 39 can be the same length or different lengths and it is also within the scope of the invention, when either the front plate or on the motor mount 11, the spacers 12 are formed in their entire length. The assembly of the compact fan according to the invention is in this case such that initially the radial fan 1 with the external rotor motor 2 is secured schraubgemäß on the motor mount 11, on the front panel 8 facing side of the motor mount 11. Thereafter, the motor mount 11 with the front panel in the abutting portions 38, 39 of the spacers 12 connected by, for example, fastening screws are screwed through the sections 39, 39. This is preferably done from the back of the motor mount 11. The intermediate mounting position with the radial fan 1 connected to the engine mount 11 is shown in FIG. Fig. 8 shows the completion state of the compact fan according to the invention. In order to achieve a secure connection of the sections 38, 39, it is expedient if these are formed at their joints in such a way that they intermesh. In the embodiment illustrated in FIGS. 6 to 8, the front plate 8 and the motor mount 11 are manufactured in particular as plastic injection-molded parts. The protective grid 32 can be clipped on or can also be formed in one piece with the front panel 8. In this illustrated embodiment, the front plate 8 and the motor mount 11, in particular its edge web 18, also have an approximately square peripheral contour, wherein the corners of the square are each bevelled. However, the invention is not limited to such a configuration of the front panel 8 and the motor mount 11. Both the front plate 8 and the motor mount 11 can be stiffened by ribs 34, 35.
Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt, sondern umfaßt auch alle im Sinne der Erfindung gleichwirkenden Mittel. Ferner ist die Erfindung bislang auch noch nicht auf die im Anspruch 1 definierte Merkmalskombination beschränkt, sondern kann auch durch jede beliebige andere Kombination von bestimmten Merkmalen aller insgesamt offenbarten Einzelmerkmalen definiert sein. Dies bedeutet, dass grundsätzlich praktisch jedes Einzelmerkmal des Anspruchs 1 weggelassen bzw. durch mindestens ein an anderer Stelle der Anmeldung offenbartes Einzelmerkmal ersetzt werden kann. Insofern ist der Anspruch 1 lediglich als ein erster Formulierungsversuch für eine Erfindung zu verstehen. The invention is not limited to the illustrated embodiments, but also includes all the same in the context of the invention means. Furthermore, the invention has hitherto not been limited to the feature combination defined in claim 1, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of claim 1 can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claim 1 is to be understood only as a first formulation attempt for an invention.

Claims

Ansprüche: Claims:
1. Kompaktlüfter, bestehend aus einem Lüfterrad, insbesondere Radiallüfterrad (1), das auf einem Rotor eines Außenläufermotors 82) befestigt ist, und das zwischen einer Frontplatte (8) mit einer insbesondere mittigen Lufteinlassöffnung (9) und einer Motorhalterung (11) gelagert ist und die Frontplatte (8) und die Motorhalterung (11) durch mehrere umfangsgemäß angeordnete Abstandhalter (12) miteinander verbunden sind, d a d u r c h g e k e n n z e i c h n e t, d a s s die Frontplatte (8) und die Motorhalterung (11) als Kunststoff- oder Metallspritzgussteile ausgebildet sind und die Abstandhalter (12) als Kunststoff- oder Metallspritzgussteile ganz oder teilweise einstückig mit der Frontplatte (8) und/oder der Motorhalterung (11) verbunden sind.1. Compact fan, consisting of a fan, in particular radial fan (1), which is mounted on a rotor of an external rotor motor 82) and which is mounted between a front plate (8) with a particular central air inlet opening (9) and an engine mount (11) and the front plate (8) and the motor mount (11) are interconnected by a plurality of spacers (12) arranged circumferentially, characterized in that the front plate (8) and the motor mount (11) are formed as plastic or metal injection molded parts and the spacers (12 ) are wholly or partially integral with the front plate (8) and / or the motor mount (11) as plastic or metal injection molded parts.
2. Kompaktlüfter nach Anspruch 1 , d a d u r c h g e k e n n z e i c h n e t, d a s s die Frontplatte (8), die Motorhalterung (11) und die Abstandhalter (12) ein einstückiges Spritzgussteil bilden.2. The compact fan as claimed in claim 1, characterized in that the front plate (8), the motor mount (11) and the spacers (12) form an integral injection-molded part.
3. Kompaktlüfter nach Anspruch 2, d ad u rc h g e ke n n z e i c h n e t, d a s s der Außenläufermotor (2) mit seinem Statorflansch (16) mittels einer Zwischenhalterung (17) an der Motorhalterung (11) an einem umfangsgemäß geschlossenen Randsteg (18) befestigt ist.3. Compact ventilator according to claim 2, characterized in that the external rotor motor (2) is fastened with its stator flange (16) to the motor mount (11) by means of an intermediate mount (17) on a peripherally closed edge web (18).
4. Kompaktlüfter nach Anspruch 3, d ad u rch ge ke n n ze i ch n et, d ass die Zwischenhalterung (17) eine mittlere Haltescheibe (19) für die Befestigung des Statorflansches (16) aufweist, von der mehrere Speichenstege (21) etwa radial nach außen ragen, die vorzugsweise im Bereich ihrer freien Enden durch einen umlaufenden Ringstege (22) verbunden sind, wobei sich die Speichenstege (21) mit Stegfortsätzen (23) über den Ringsteg (22) hinaus radial nach außen fortsetzen. 4. Compact ventilator according to claim 3, characterized in that the intermediate holder (17) has a middle holding disk (19) for fastening the stator flange (16), of which a plurality of spoke webs (21) project radially outwards, which are preferably connected in the region of their free ends by a circumferential annular webs (22), wherein the spoke webs (21) with web extensions (23) on the annular web (22) continue radially outward.
5. Kompaktlüfter nach Anspruch 4, d a d u rch g e ke n n ze i ch n et, d a ss die Motorhalterung (11 ) auf ihrer von der Frontplatte (8) abgekehrten Seite Aufnahmetaschen (26) für die Enden der Speichenstege (21), vorzugsweise für die Stegfortsätze (23) aufweisen.5. Compact ventilator according to claim 4, characterized in that the motor mount (11) has on its side facing away from the front plate (8) receiving pockets (26) for the ends of the spoke webs (21), preferably for have the web extensions (23).
6. Kompaktlüfter nach Anspruch 4 oder 5, d a d u r c h g e k e n n z e i c h n e t, d a s s mindestens einer der Speichenstege (21) im Querschnitt U-förmig als einseitig offener Kanal ausgebildet ist.6. Compact fan according to claim 4 or 5, d a d u r c h e c e n e c e n e s, at least one of the spoke webs (21) in cross-section U-shaped is formed as a unilaterally open channel.
7. Kompaktlüfter nach einem der Ansprüche 3 bis 6, d a d u r c h g e k e n n z e i c h n e t, d a s s die Zwischenhalterung (17) als Kunststoff-Spritzgussteil oder als Metallformteil ausgebildet ist.7. Compact ventilator according to one of claims 3 to 6, characterized in that the intermediate holder (17) is designed as a plastic injection-molded part or as a metal shaped part.
8. Kompaktlüfter nach einem der Ansprüche 3 bis 7, d a d u r c h g e k e n n z e i c h n e t, d a s s die Zwischenhalterung (17) mittels Schraubverbindungen mit der Motorhalterung (11) im Bereich der Enden der Speichenstege (21) oder der Stegfortsätze (23) und mit dem Motorflansch im Bereich der mittleren Haltescheibe (19) verbunden ist.8. Compact fan according to one of claims 3 to 7, characterized in that the intermediate support (17) by means of screw connections to the motor mount (11) in the region of the ends of the spoke webs (21) or the web extensions (23) and with the motor flange in the middle Holding disc (19) is connected.
9. Kompaktlüfter nach Anspruch 1 , d a d u r c h g e k e n n z e i c h n e t, d a s s die Frontplatte (8), die Motorhalterung (11) und die Abstandhalter (12) aus zwei miteinander im Bereich der Abstandhalter (12) verbindbaren Kunststoff- oder Metallspritzgussteilen gebildet sind, wobei vorzugsweise die Abstandhalter (12) aus mit der Frontplatte (8) und der Motorhalterung (11) verbundenen Teilstücken (38, 39) bestehen.9. Compact fan according to claim 1, characterized in that the front plate (8), the motor mount (11) and the spacers (12) of two mutually in the region of the spacers (12) connectable plastic or metal injection molded parts are formed, wherein preferably the spacers ( 12) consist of with the front panel (8) and the motor mount (11) connected to sections (38, 39).
10. Kompaktlüfter nach Anspruch 9, d a d u r c h g e k e n n z e i c h n e t, d a s s die Motorhalterung (11) eine mittige Haltescheibe (19) für die Befestigung des Statorflansches (16) aufweist, von der etwa radial verlaufende Speichenstege (21) nach außen abstehen, die in einem umfänglich geschlossenen Randsteg (37) enden. 10. Compact ventilator according to claim 9, characterized in that the motor mount (11) has a central retaining disc (19) for fixing the Statorflansches (16) projecting from the approximately radially extending spoke webs (21) to the outside, in a circumferentially closed edge web (37) end.
11. Kompaktlüfter nach einem der Ansprüche 1 bis 10, d a d u r c h g e k e n n z e i c h n e t, d a s s die Abstandhalter (12) senkrecht oder schräg zu der Frontplatte (8) und der Motorhalterung (11) verlaufen und insbesondere als Strömungsprofile ausgebildet sind.11. Compact ventilator according to one of claims 1 to 10, wherein the spacers (12) run perpendicular or obliquely to the front plate (8) and the motor mount (11) and are in particular designed as flow profiles.
12. Kompaktlüfter nach Anspruch 11 , d a d u r c h g e k e n n z e i c h n e t, d a s s die Abstandhalter (12) eine Längsachse (X) und eine hierzu senkrecht verlaufende Querachse (Y) besitzen, wobei die Längsachse (X) länger ist als die Querachse (Y).12. Compact ventilator according to claim 11, wherein the spacers (12) have a longitudinal axis (X) and a transverse axis (Y) perpendicular thereto, the longitudinal axis (X) being longer than the transverse axis (Y).
13. Kompaktlüfter nach Anspruch 12, d a d u rc h g e k e n n z e i c h n e t, d a s s die Längsachse (X) parallel oder unter einem spitzen Winkel (α) vorzugsweise von - 10 ° < α ≤ 60 ° zu einer Tangente (T) an einer kreisförmigen Umfangslinie des Radiallüfterrades (1) verläuft.13. The compact fan according to claim 12, characterized dadu rc hgekennzeichnet that the longitudinal axis (X) parallel or at an acute angle (α) preferably from - 10 ° <α ≤ 60 ° to a tangent (T) on a circular peripheral line of the radial fan (1 ) runs.
14. Kompaktlüfter nach einem der Ansprüche 11 bis 13, d a d u r c h g e k e n n z e i c h n e t, d a s s ein radialer Abstand (A) der Abstandhalter (12) von einer Mittelachse (M) des Radiallüfterrades (1) in Abhängigkeit vom Außenradius (R) des Radiallüfterrades (1) entsprechend der Messungsregel 1 ,05 R < A < 1 ,5 R gewählt ist.14. Compact fan according to one of claims 11 to 13, characterized in that a radial distance (A) of the spacers (12) from a central axis (M) of the radial fan (1) in dependence on the outer radius (R) of the radial fan (1) corresponding to Measurement rule 1, 05 R <A <1, 5 R is selected.
15. Kompaktlüfter nach einem der Ansprüche 1 bis 14, d a d u r c h g e k e n n z e i c h n e t, d a s s die Lufteinlassöffnung (9) der Frontplatte (8) kreisförmig ist und einen als Einströmdüse geformten Innenrandbereich (14) aufweist.15. The compact fan according to claim 1, wherein the air inlet opening (9) of the front panel (8) is circular and has an inner edge area (14) shaped as an inlet nozzle.
16. Kompaktlüfter nach einem der Ansprüche 1 bis 15, d a d u rc h g e k e n n ze i c h n et, d a s s die Lufteinlassöffnung (19) mit einem an der Frontplatte (8) befestigbaren oder ausgebildeten Schutzgitter (32) verschließbar ist. 16. Compact fan according to one of claims 1 to 15, dadu rc hgekenn ze ichn et that the air inlet opening (19) with a front panel (8) can be fastened or formed protective grille (32) is closed.
17. Kompaktlüfter nach einem der Ansprüche 1 bis 16, d a d u r c h g e k e n n z e i c h n e t, d a s s die Frontplatte (8) die Motorhalterung (11) an ihrem Außenrand umfänglich überragt, sowie beide Teile (8, 11) vorzugsweise eine quadratische Form mit abgeschrägten Ecken (30, 35) besitzen.17. Compact fan according to one of claims 1 to 16, characterized in that the front plate (8) projects beyond the motor mount (11) at its outer edge, and both parts (8, 11) preferably a square shape with bevelled corners (30, 35) have.
18. Kompaktlüfter nach einem der Ansprüche 1 bis 17, d a d u rc h g e ke n n ze i c h n et, d a s s das Radiallüfterrad (1) aus einer vorderen Deckscheibe (3) und einer hinteren Deckscheibe (4) besteht, zwischen denen rückwärts gekrümmte Schaufeln (6) angeordnet sind und die vordere Deckscheibe (3) eine kreisförmige Lufteinlassöffnung (7) aufweist, deren Durchmesser etwas größer ist als der Außendurchmesser der Einströmdüse (14).18. The compact ventilator according to claim 1, wherein the radial fan wheel (1) comprises a front cover disk (3) and a rear cover disk (4), between which rearwardly curved blades (6) are arranged and the front cover plate (3) has a circular air inlet opening (7) whose diameter is slightly larger than the outer diameter of the inlet nozzle (14).
19. Kompaktlüfter nach einem der Ansprüche 1 bis 18, d a d u rc h g e ke n n ze i c h n et, d a s s das Radiallüfterrad (1) auf dem Rotor des Außenläufermotors (2) aufgepresst ist.19. Compact ventilator according to one of claims 1 to 18, characterized in that the radial fan impeller (1) is pressed onto the rotor of the external rotor motor (2).
20. Kompaktlüfter nach einem der Ansprüche 1 bis 19, d a d u rc h g e ke n n z e i c h n et, d a s s die Frontplatte (8) und die Motorhalterung (11) durch Rippenstrukturen (33, 34) versteift sind. 20. Compact ventilator according to one of claims 1 to 19, characterized in that the front plate (8) and the motor mount (11) are stiffened by rib structures (33, 34).
EP09712411A 2008-02-19 2009-01-30 Compact fan Active EP2242930B1 (en)

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DE202008002356U DE202008002356U1 (en) 2008-02-19 2008-02-19 compact fans
PCT/EP2009/051069 WO2009103606A1 (en) 2008-02-19 2009-01-30 Compact fan

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US20110200438A1 (en) 2011-08-18
CN101946092A (en) 2011-01-12
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EP2242930B1 (en) 2012-03-07
US20100329857A1 (en) 2010-12-30
ES2382438T4 (en) 2012-10-10
WO2009103606A1 (en) 2009-08-27
CN101946092B (en) 2015-07-01
DE102008056459A1 (en) 2009-08-20
ATE548568T1 (en) 2012-03-15
US8992175B2 (en) 2015-03-31
DE202008002356U1 (en) 2009-06-25
US8672615B2 (en) 2014-03-18

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