EP2329149A1 - Diagonal fan - Google Patents

Diagonal fan

Info

Publication number
EP2329149A1
EP2329149A1 EP09783559A EP09783559A EP2329149A1 EP 2329149 A1 EP2329149 A1 EP 2329149A1 EP 09783559 A EP09783559 A EP 09783559A EP 09783559 A EP09783559 A EP 09783559A EP 2329149 A1 EP2329149 A1 EP 2329149A1
Authority
EP
European Patent Office
Prior art keywords
fan according
diagonal fan
spacers
webs
diagonal
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
EP09783559A
Other languages
German (de)
French (fr)
Other versions
EP2329149B1 (en
Inventor
Christian RÜCKERT
Jürgen Schöne
Jörg GÜNTHER
Oliver Haaf
Erich Hofmann
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
Priority claimed from DE102008056459A external-priority patent/DE102008056459A1/en
Application filed by Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP2329149A1 publication Critical patent/EP2329149A1/en
Application granted granted Critical
Publication of EP2329149B1 publication Critical patent/EP2329149B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/06—Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/53—Building or constructing in particular ways by integrally manufacturing a component, e.g. by milling from a billet or one piece construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the present invention relates to a diagonal fan consisting of a Diagonallsymmetricerrad which is mounted on a rotor of an external rotor motor, and which is arranged between a front plate with a particular central inlet opening and a motor mount, wherein the motor mount is connected by a plurality of circumferentially arranged spacers with the front panel ,
  • the present invention is based on the object to realize a montage technical simple and compact design for diagonal fan, which further ensures additional improved flow characteristics.
  • this is achieved in a construction of a diagonal fan described above, characterized in that the front plate and the motor mount are formed as plastic and / or metal injection molded parts and the spacers are formed as plastic and / or metal injection molded parts integral with the front panel or the motor mount.
  • the spacers consist of flat webs which have a cross-sectional profile whose height is greater than the thickness, and wherein the webs can preferably be aligned such that they run inclined in the outflow direction of the flow medium emerging from the diagonal fan.
  • FIG. 1 is a perspective view of the front of a diagonal fan according to the invention in a first embodiment
  • Fig. 2 is a perspective view of the back of the invention
  • FIG. 3 is an exploded view of the diagonal fan according to the invention according to the view of FIG. 1,
  • FIG. 4 is an exploded view of a diagonal fan according to the invention in the view of FIG. 2,
  • Fig. 5 is a view corresponding to Fig. 1 of a second, alternative
  • FIG. 6 shows the embodiment according to FIG. 5 in a view analogous to FIG. 2, FIG.
  • FIG. 7 is an exploded perspective view analogous to FIG. 4 of
  • Fig. 8 is a separate perspective view of the motor mount of FIG. 7 on the inside thereof (approximately corresponding to FIG. 3).
  • a diagonal fan consists of a Diagonallsymmetricerrad 1, which is mounted on a rotor 2 of an external rotor motor 3.
  • the external rotor motor 3 is arranged between a motor mount 4 and a front plate 5.
  • the front plate 5 has a central inflow opening 6, through the opening center of which the axis of rotation of the external rotor motor 3 extends.
  • a peripheral web 7 pointing in the direction of the external rotor motor 3 is formed, wherein the transition of a front surface 8 of the front panel 5 to the edge web 7 is rounded, so that a flow-favorable wall course is formed by forming a type of inlet nozzle.
  • the diagonal fan wheel 1 consists of a hub 9 (see Fig. 4) on which fan blades 11 are arranged circumferentially.
  • the fan blades 11 are shaped in a conventional manner, wherein an air flow in the direction of arrow X via the inlet opening 6 through the diagonal fan 1 in the diagonal direction, d.
  • FIGS. H. By the blade shape shown in FIGS. H. in an axial-radial flow direction, through outward in a direction of rotation in the direction of arrow Y results.
  • the fan blades 11 are surrounded by an air guide casing 12, which is preferably connected to the fan blades 11 at their ends, so that it rotates with the fan blades 11.
  • the hub 9 and the air duct 12 have the shape of a truncated cone, with the corresponding radii increasing from the inflow side (suction side) to the blow-out side. This ensures that the flow to its axial flow component receives a radial flow component, whereby an increase in pressure is effected.
  • the Diagonallcererrad 1 has On the inflow side of the air guide casing 12, an annular collar 13, which comprises the inflow opening of the diagonal fan wheel 1.
  • the outer diameter of the annular collar 13 is dimensioned such that it protrudes in the mounted state in the enclosed by the edge web 7 inflow without contact with little play.
  • the annular collar 13 pockets 15 (Fig. 3), in which balancing weights can be attached.
  • the external rotor motor 3 has at its stator 16 a stator flange 17, which serves for fastening the motor mount 4.
  • the motor mount 4 has a circular retaining plate 18 whose outer diameter is adapted to the outer diameter of the circular hub 9.
  • the stator flange 17 is screwed by means of screws to the holding plate 18 through screw holes 19 in this.
  • spacers 21 The connection between the motor mount 4 and the front plate 5 via spacers 21.
  • four spacers 21 are integrally formed on the periphery of the support plate 18 at the peripheral edge 22.
  • the spacers 21 consist of flat webs 23 with a cross-sectional profile whose height or width is greater than its thickness.
  • the webs 23 consist of a first web leg 24, which extends approximately radially outwardly from the peripheral wall 22 and over a approximately 90 ° bend in a second, approximately in the axial direction, ie parallel to the motor axis extending web leg 26 passes.
  • the webs 23 with the flat profile of their web legs 24, 26 are aligned obliquely so that they extend in the direction of discharge of the emerging from the diagonal fan 1 air flow. As a result, flow vortices are reduced, which would lead to flow noise.
  • the webs 23 have at their free ends a plate-shaped connecting element 27 with which they are attached to the front panel 5 at the rear, preferably by a releasable connection z. B. by means of screws.
  • the front plate 5 bearing projections 28.
  • hollow chambers 20 may be formed in the respective connection region of the connecting elements 27 of the spacers 21 with the bearing projections 28.
  • These hollow chambers 20 may be for receiving electronic components, for.
  • capacitors serve as components of an engine electronics.
  • the bearing protrusions 28 are mainly shaped as hollow chambers 20 (see in particular FIG. 4).
  • the plate-shaped connecting elements 27 serve expediently at the same time as a lid for the hollow-chamber-like bearing projections 28th
  • each spacer 21 preferably consists of two webs 23 which are parallel to each other and are connected together at their free ends via the connecting element 27.
  • the webs 23 may be connected to each other by at least one bridge web 29 for stiffening.
  • the connecting elements 27 have guide projections 31 integrally formed on their shorter transverse side edges, which fit into guide pockets 32 of the bearing projections 28 and are inserted into them when the webs 23 are fastened.
  • the hub 9 has at its engine mount 4 facing end side in a wall of the hub body pockets 33, can be inserted into the balancing weights.
  • the front plate 5 is provided with a rib structure 25, which on the one hand, a material saving and on the other hand, a stiffening of the front panel 5 is achieved.
  • a rib structure 25 a As shown in Fig. 3, and the holding plate 18 on its side facing the external rotor motor 3 side a rib structure 25 a, so that the holding plate is not formed as a thick-walled, solid part.
  • the front plate 5 and the motor mount 4 are formed as plastic and / or metal injection molded parts and the spacers 21 as plastic or metal injection molded parts integral with the front panel 5 or Motor bracket 4 are made.
  • This embodiment of the invention results in an existing only two injection molded fan housing, resulting in a montage technically simple and compact design.
  • FIGS. 5 to 8 embodiment of the diagnostic fan according to the invention the same parts with the corresponding reference numerals as in Figs. 1 to 4 are initially designated.
  • the hollow chambers 20 are formed mainly in the region of the connecting elements 27 of the spacers 21 (see FIG. 8).
  • the spacers 21 or their webs 23 according to FIGS. 6 and 7 also have ribs 23a for saving material and weight as well as for stiffening.
  • the invention is not limited to the illustrated embodiments, but also includes all means acting in accordance with the invention means. Furthermore, the invention has hitherto not yet been defined on the feature combination defined in claim 1 of certain 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 diagonal fan, comprising a diagonal fan impeller (1) which is fastened to a rotor (2) of an external rotor motor (3) and which is arranged between a front plate (5), which has an in particular central inflow opening (6), and a motor bracket (4). The motor bracket (4) is connected to the front plate (5) by means of a plurality of peripherally arranged spacers (21). Here, the front plate (5) and the motor bracket (4) are formed as plastic or metal injection moulded parts. The spacers (21) are formed, as plastic and/or metal injection moulded parts, in one piece with the front plate (5) or with the motor bracket (4).

Description

„Diagonallüfter" "Diagonal fan"
Die vorliegende Erfindung betrifft einen Diagonallüfter, bestehend aus einem Diagonallüfterrad, das auf einem Rotor eines Außenläufermotors befestigt ist, und das zwischen einer Frontplatte mit einer insbesondere mittigen Einströmöffnung und einer Motorhalterung angeordnet ist, wobei die Motorhalterung durch mehrere umfangsgemäß angeordnete Abstandhalter mit der Frontplatte verbunden ist.The present invention relates to a diagonal fan consisting of a Diagonallüfterrad which is mounted on a rotor of an external rotor motor, and which is arranged between a front plate with a particular central inlet opening and a motor mount, wherein the motor mount is connected by a plurality of circumferentially arranged spacers with the front panel ,
Kompaktlüfter, die eine derartige Ausgestaltung aufweisen, sind beispielsweise aus dem Dokument DE 90 17 873 U1 bekannt.Compact fans, which have such a configuration, are known for example from the document DE 90 17 873 U1.
Ausgehend von einem derartigen Kompaktlüfter liegt der vorliegenden Erfindung die Aufgabe zu Grunde, eine montagetechnische einfache und kompakte Konstruktion für Diagonallüfter zu verwirklichen, die weiterhin zusätzlich verbesserte Strömungseigenschaften gewährleistet.Based on such a compact fan, the present invention is based on the object to realize a montage technical simple and compact design for diagonal fan, which further ensures additional improved flow characteristics.
Erfindungsgemäß wird dies bei einer eingangs beschriebenen Bauweise eines Diagonallüfters dadurch erreicht, dass die Frontplatte und die Motorhalterung als Kunststoff- und/oder Metallspritzgussteile ausgebildet sind und die Abstandhalter als Kunststoff- und/oder Metallspritzgussteile einstückig mit der Frontplatte oder der Motorhalterung ausgebildet sind. Hierbei ist es vorteilhaft, wenn die Abstandhalter aus flachen Stegen bestehen, die ein Querschnittsprofil besitzen, dessen Höhe größer ist als die Dicke, und wobei die Stege bevorzugt derart ausgerichtet sein können, dass sie in Ausströmrichtung des aus dem Diagonallüfterrad austretenden Strömungsmediums geneigt verlaufen. Somit wird erfindungsgemäß eine herstellungstechnisch einfache Konstruktion geschaffen, da das aus der Frontplatte und der Motorhalterung gebildete Gehäuse nur aus zwei Einzelteilen besteht. Zudem können alle wesentlichen Funktionen in das Gehäuse integriert werden. Hierbei gewährleistet die bevorzugte Ausgestaltung der Abstandhalter, dass geringe Strömungsverwirbelungen bei dem Austritt des Strömungsmediums auftreten, so dass keine störenden Geräusche entstehen können.According to the invention this is achieved in a construction of a diagonal fan described above, characterized in that the front plate and the motor mount are formed as plastic and / or metal injection molded parts and the spacers are formed as plastic and / or metal injection molded parts integral with the front panel or the motor mount. In this case, it is advantageous if the spacers consist of flat webs which have a cross-sectional profile whose height is greater than the thickness, and wherein the webs can preferably be aligned such that they run inclined in the outflow direction of the flow medium emerging from the diagonal fan. Thus, a manufacturing technology simple construction is created according to the invention, since the housing formed from the front panel and the motor mount only consists of two parts. In addition, all essential functions can be integrated into the housing. In this case, the preferred embodiment of the spacers ensures that small Strömungsverwirbelungen occur at the outlet of the flow medium, so that no disturbing noises may arise.
Vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen und der nachfolgenden Beschreibung enthalten. Anhand von in den beiliegenden Zeichnungen dargestellten Ausführungsbeispielen wird die Erfindung näher erläutert. Es zeigen:Advantageous embodiments of the invention are contained in the subclaims and the following description. Based on embodiments shown in the accompanying drawings, the invention will be explained in more detail. Show it:
Fig. 1 eine perspektivische Ansicht auf die Vorderseite eines erfindungsgemäßen Diagonallüfters in einer ersten Ausführungsform,1 is a perspective view of the front of a diagonal fan according to the invention in a first embodiment,
Fig. 2 eine perspektivische Ansicht auf die Rückseite des erfindungsgemäßenFig. 2 is a perspective view of the back of the invention
Diagonallüfters gemäß Fig. 1 ,Diagonal fan according to FIG. 1,
Fig. 3 eine Explosionsdarstellung des erfindungsgemäßen Diagonallüfters entsprechend der Ansicht gemäß Fig. 1 ,3 is an exploded view of the diagonal fan according to the invention according to the view of FIG. 1,
Fig. 4 eine Explosionsdarstellung eines erfindungsgemäßen Diagonallüfters in der Ansicht gemäß Fig. 2,4 is an exploded view of a diagonal fan according to the invention in the view of FIG. 2,
Fig. 5 eine Ansicht entsprechend Fig. 1 einer zweiten, alternativenFig. 5 is a view corresponding to Fig. 1 of a second, alternative
Ausführungsform des erfindungsgemäßen Diagonallüfters,Embodiment of the diagonal fan according to the invention,
Fig. 6 die Ausführung gemäß Fig. 5 in einer Ansicht analog zu Fig. 2,6 shows the embodiment according to FIG. 5 in a view analogous to FIG. 2, FIG.
Fig. 7 eine perspektivische Explosionsdarstellung analog zu Fig. 4 des7 is an exploded perspective view analogous to FIG. 4 of
Diagonallüfters gemäß Fig. 5 und 6, jedoch ohne Motor und Lüfterrad, und Fig. 8 eine gesonderte Perspektivansicht der Motorhalterung gemäß Fig. 7 auf deren Innenseite (etwa entsprechend Fig. 3).Diagonal fan according to FIGS. 5 and 6, but without motor and fan, and Fig. 8 is a separate perspective view of the motor mount of FIG. 7 on the inside thereof (approximately corresponding to FIG. 3).
In den verschiedenen Figuren der Zeichnung sind gleiche Teile stets mit denselben Bezugsziffern gekennzeichnet.In the various figures of the drawing, like parts are always identified by the same reference numerals.
Wie zunächst in den Figuren 1 und 2 dargestellt ist, besteht ein erfindungsgemäßer Diagonallüfter aus einem Diagonallüfterrad 1 , das auf einem Rotor 2 eines Außenläufermotors 3 befestigt ist. Der Außenläufermotor 3 ist zwischen einer Motorhalterung 4 und einer Frontplatte 5 angeordnet. Die Frontplatte 5 besitzt eine mittige Einströmöffnung 6, durch deren Öffnungsmittelpunkt die Drehachse des Außenläufermotors 3 verläuft. Am Umfang der Einströmöffnung 6 ist ein in Richtung auf den Außenläufermotor 3 weisender Randsteg 7 angeformt, wobei der Übergang einer Frontfläche 8 der Frontplatte 5 zum Randsteg 7 verrundet ist, so dass sich ein strömungsgünstiger Wandungsverlauf ausbildet, indem eine Art Einströmdüse gebildet wird. Das Diagonallüfterrad 1 besteht aus einer Nabe 9 (s. Fig. 4), an der umfangsgemäß Lüfterflügel 11 angeordnet sind. Die Lüfterflügel 11 sind in üblicher Weise geformt, wobei sich durch die in Fig. 1 bis 4 dargestellte Schaufelform eine Luftströmung in Pfeilrichtung X über die Einströmöffnung 6 durch das Diagonallüfterrad 1 in diagonaler Richtung, d. h. in einer axial-radialer Strömungsrichtung, hindurch nach außen bei einer Drehrichtung in Pfeilrichtung Y ergibt.As first shown in Figures 1 and 2, a diagonal fan according to the invention consists of a Diagonallüfterrad 1, which is mounted on a rotor 2 of an external rotor motor 3. The external rotor motor 3 is arranged between a motor mount 4 and a front plate 5. The front plate 5 has a central inflow opening 6, through the opening center of which the axis of rotation of the external rotor motor 3 extends. At the periphery of the inflow opening 6, a peripheral web 7 pointing in the direction of the external rotor motor 3 is formed, wherein the transition of a front surface 8 of the front panel 5 to the edge web 7 is rounded, so that a flow-favorable wall course is formed by forming a type of inlet nozzle. The diagonal fan wheel 1 consists of a hub 9 (see Fig. 4) on which fan blades 11 are arranged circumferentially. The fan blades 11 are shaped in a conventional manner, wherein an air flow in the direction of arrow X via the inlet opening 6 through the diagonal fan 1 in the diagonal direction, d. By the blade shape shown in FIGS. H. in an axial-radial flow direction, through outward in a direction of rotation in the direction of arrow Y results.
Die Lüfterflügel 11 werden von einem Luftführungsmantel 12 umgeben, der vorzugsweise mit den Lüfterflügeln 11 an ihren Enden verbunden ist, so dass er sich mit den Lüfterflügeln 11 mitdreht. Hierzu wird insbesondere auf die Figuren 3 und 4 verwiesen. Die Nabe 9 und der Luftführungsmantel 12 haben die Form eines Kegelstumpfes, wobei die entsprechenden Radien von der Einströmseite (Ansaugseite) zu der Ausblasseite zunehmen. Hierdurch wird erreicht, dass die Strömung zu ihrer axialen Strömungskomponente eine radiale Strömungskomponente erhält, wodurch eine Druckerhöhung bewirkt wird. Das Diagonallüfterrad 1 besitzt einströmseitig an dem Luftführungsmantel 12 einen Ringkragen 13, der die Einströmöffnung des Diagonallüfterrades 1 umfasst. Der Außendurchmesser des Ringkragens 13 ist derart bemessen, dass er in montiertem Zustand in die von dem Randsteg 7 umschlossene Einströmöffnung berührungsfrei mit geringem Spiel hineinragt. In seiner Stirnfläche 14 weist der Ringkragen 13 Taschen 15 auf (Fig. 3), in denen Auswuchtgewichte befestigt werden können. Der Außenläufermotor 3 besitzt an seinem Stator 16 einen Statorflansch 17, der zur Befestigung der Motorhalterung 4 dient. Hierzu besitzt die Motorhalterung 4 eine kreisförmige Halteplatte 18, deren Außendurchmesser dem Außendurchmesser der kreisförmigen Nabe 9 angepasst ist. Der Statorflansch 17 wird mittels Schrauben mit der Halteplatte 18 durch Schraublöcher 19 in dieser verschraubt.The fan blades 11 are surrounded by an air guide casing 12, which is preferably connected to the fan blades 11 at their ends, so that it rotates with the fan blades 11. Reference is made in particular to FIGS. 3 and 4. The hub 9 and the air duct 12 have the shape of a truncated cone, with the corresponding radii increasing from the inflow side (suction side) to the blow-out side. This ensures that the flow to its axial flow component receives a radial flow component, whereby an increase in pressure is effected. The Diagonallüfterrad 1 has On the inflow side of the air guide casing 12, an annular collar 13, which comprises the inflow opening of the diagonal fan wheel 1. The outer diameter of the annular collar 13 is dimensioned such that it protrudes in the mounted state in the enclosed by the edge web 7 inflow without contact with little play. In its end face 14, the annular collar 13 pockets 15 (Fig. 3), in which balancing weights can be attached. The external rotor motor 3 has at its stator 16 a stator flange 17, which serves for fastening the motor mount 4. For this purpose, the motor mount 4 has a circular retaining plate 18 whose outer diameter is adapted to the outer diameter of the circular hub 9. The stator flange 17 is screwed by means of screws to the holding plate 18 through screw holes 19 in this.
Die Verbindung zwischen der Motorhalterung 4 und der Frontplatte 5 erfolgt über Abstandhalter 21. Im vorliegenden Fall sind vier Abstandhalter 21 am Umfang der Halteplatte 18 an deren Umfangsrand 22 angeformt.The connection between the motor mount 4 and the front plate 5 via spacers 21. In the present case, four spacers 21 are integrally formed on the periphery of the support plate 18 at the peripheral edge 22.
Die Abstandhalter 21 bestehen aus flachen Stegen 23 mit einem Querschnittsprofil, dessen Höhe bzw. Breite größer als dessen Dicke ist. Die Stege 23 bestehen aus einem ersten Stegschenkel 24, der sich etwa radial nach außen von der Umfangswand 22 erstreckt und über eine ca. 90°-Biegung in einen zweiten, etwa in axialer Richtung, d.h. parallel zur Motorachse verlaufenden Stegschenkel 26 übergeht. Die derart geformten Stege 23 umfassen das Diagonallüfterrad 1. Hierbei sind die Stege 23 mit dem flachen Profil ihrer Stegschenkeln 24, 26 derart schräg ausgerichtet, dass sie in Ausblasrichtung des aus dem Diagonallüfterrad 1 austretenden Luftstroms verlaufen. Hierdurch werden Strömungswirbel reduziert, die zu Strömungsgeräuschen führen würden. Die Stege 23 besitzen an ihren freien Enden ein plattenförmiges Verbindungselement 27, mit dem sie an der Frontplatte 5 an deren Rückseite befestigt werden, und zwar vorzugsweise durch eine lösbare Verbindung z. B. mittels Schrauben. Hierzu weist die Frontplatte 5 Lagervorsprünge 28 auf. Im jeweiligen Verbindungsbereich der Verbindungselemente 27 der Abstandhalter 21 mit den Lagervorsprüngen 28 können Hohlkammern 20 gebildet sein. Diese Hohlkammern 20 können zur Aufnahme von elektronischen Bauteilen, z. B. auch Kondensatoren, als Bestandteile einer Motorelektronik dienen. Im ersten Ausführungsbeispiel gemäß Fig. 1 bis 4 sind hauptsächlich die Lagervorsprünge 28 als Hohlkammern 20 geformt (siehe insbesondere Fig. 4). Die plattenförmigen Verbindungselemente 27 dienen dabei zweckmäßigerweise gleichzeitig als Deckel für die hohl kammerartigen Lagervorsprünge 28.The spacers 21 consist of flat webs 23 with a cross-sectional profile whose height or width is greater than its thickness. The webs 23 consist of a first web leg 24, which extends approximately radially outwardly from the peripheral wall 22 and over a approximately 90 ° bend in a second, approximately in the axial direction, ie parallel to the motor axis extending web leg 26 passes. In this case, the webs 23 with the flat profile of their web legs 24, 26 are aligned obliquely so that they extend in the direction of discharge of the emerging from the diagonal fan 1 air flow. As a result, flow vortices are reduced, which would lead to flow noise. The webs 23 have at their free ends a plate-shaped connecting element 27 with which they are attached to the front panel 5 at the rear, preferably by a releasable connection z. B. by means of screws. For this purpose, the front plate 5 bearing projections 28. In the respective connection region of the connecting elements 27 of the spacers 21 with the bearing projections 28 hollow chambers 20 may be formed. These hollow chambers 20 may be for receiving electronic components, for. As well as capacitors, serve as components of an engine electronics. In the first embodiment according to FIGS. 1 to 4, the bearing protrusions 28 are mainly shaped as hollow chambers 20 (see in particular FIG. 4). The plate-shaped connecting elements 27 serve expediently at the same time as a lid for the hollow-chamber-like bearing projections 28th
Wie in den dargestellten Ausführungsbeispielen gezeigt, besteht jeder Abstandhalter 21 bevorzugt aus zwei Stegen 23, die parallel zueinander verlaufen und an ihren freien Enden über das Verbindungselement 27 miteinander verbunden sind. Im Bereich zwischen den Anbindungen der Stege 23 an der Halteplatte 18 und dem Verbindungselement 27 können die Stege 23 durch mindestens einen Brückensteg 29 zur Aussteifung miteinander verbunden sein.As shown in the illustrated embodiments, each spacer 21 preferably consists of two webs 23 which are parallel to each other and are connected together at their free ends via the connecting element 27. In the region between the connections of the webs 23 on the holding plate 18 and the connecting element 27, the webs 23 may be connected to each other by at least one bridge web 29 for stiffening.
Gemäß Fig. 1 bis 4 weisen die Verbindungselemente 27 an ihren kürzeren Querseiten- rändern angeformte Führungsansätze 31 auf, die in Führungstaschen 32 der Lagervorsprünge 28 hineinpassen und beim Befestigen der Stege 23 in diese hineingesteckt werden. Wie aus Fig. 4 zu erkennen ist, besitzt die Nabe 9 an ihrer der Motorhalterung 4 zugekehrten Stirnseite in einer Wandung des Nabenkörpers Taschen 33, in die Auswuchtgewichte eingesteckt werden können. Auf ihrer Rückseite ist die Frontplatte 5 mit einer Rippenstruktur 25 versehen, wodurch einerseits eine Materialersparnis und andererseits eine Versteifung der Frontplatte 5 erreicht wird. Wie in Fig. 3 gezeigt ist, weist auch die Halteplatte 18 an ihrer dem Außenläufermotor 3 zugekehrten Seite eine Rippenstruktur 25a auf, so dass die Halteplatte nicht als dickwandiges, massives Teil ausgebildet ist.According to FIGS. 1 to 4, the connecting elements 27 have guide projections 31 integrally formed on their shorter transverse side edges, which fit into guide pockets 32 of the bearing projections 28 and are inserted into them when the webs 23 are fastened. As can be seen from Fig. 4, the hub 9 has at its engine mount 4 facing end side in a wall of the hub body pockets 33, can be inserted into the balancing weights. On its rear side, the front plate 5 is provided with a rib structure 25, which on the one hand, a material saving and on the other hand, a stiffening of the front panel 5 is achieved. As shown in Fig. 3, and the holding plate 18 on its side facing the external rotor motor 3 side a rib structure 25 a, so that the holding plate is not formed as a thick-walled, solid part.
Erfindungsgemäß ist vorgesehen, dass die Frontplatte 5 und die Motorhalterung 4 als Kunststoff und/oder Metallspritzgussteile ausgebildet sind und die Abstandhalter 21 als Kunststoff- oder Metallspritzgussteile einstückig mit der Frontplatte 5 oder der Motorhalterung 4 hergestellt sind. Durch diese erfindungsgemäße Ausgestaltung entsteht ein nur aus zwei Spritzgussteilen bestehendes Lüftergehäuse, wodurch sich eine montagetechnisch einfache und kompakte Konstruktion bedingt.According to the invention it is provided that the front plate 5 and the motor mount 4 are formed as plastic and / or metal injection molded parts and the spacers 21 as plastic or metal injection molded parts integral with the front panel 5 or Motor bracket 4 are made. This embodiment of the invention results in an existing only two injection molded fan housing, resulting in a montage technically simple and compact design.
Bei der alternativen, in den Fig. 5 bis 8 dargestellten Ausführungsform des erfindungsgemäßen Diagnoallüfters sind zunächst gleiche Teile mit den entsprechenden Bezugszeichen wie in Fig. 1 bis 4 bezeichnet. Bei dieser Ausführung ist unterschiedlich, dass die Hohlkammern 20 hauptsächlich im Bereich der Verbindungselemente 27 der Abstandhalter 21 gebildet sind (siehe Fig. 8). Gemäß Fig. 7 können aber auch auf der Seite der Lagervorsprünge 28 der Frontplatte 5 anteilige Kammern 20a gebildet sein. Ferner weisen auch die Abstandhalter 21 bzw. deren Stege 23 gemäß Fig. 6 und 7 Verrippungen 23a zur Material- und Gewichtseinsparung sowie zur Versteifung auf.In the alternative, illustrated in FIGS. 5 to 8 embodiment of the diagnostic fan according to the invention the same parts with the corresponding reference numerals as in Figs. 1 to 4 are initially designated. In this embodiment, it is different that the hollow chambers 20 are formed mainly in the region of the connecting elements 27 of the spacers 21 (see FIG. 8). According to FIG. 7, but also on the side of the bearing projections 28 of the front panel 5 proportionate chambers 20a may be formed. Furthermore, the spacers 21 or their webs 23 according to FIGS. 6 and 7 also have ribs 23a for saving material and weight as well as for stiffening.
Die Erfindung ist nicht auf die dargestellten Ausführungen 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 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 means acting in accordance with the invention means. Furthermore, the invention has hitherto not yet been defined on the feature combination defined in claim 1 of certain 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. Diagonallüfter, bestehend aus einem Diagonallüfterrad (1 ), das auf einem Rotor (2) eines Außenläufermotors (3) befestigt und zwischen einer Frontplatte (5) mit einer insbesondere mittigen Einströmöffnung (6) und einer Motorhalterung (4) angeordnet ist, wobei die Motorhalterung (4) durch mehrere umfangsgemäß angeordnete Abstandhalter (21 ) mit der Frontplatte (5) verbunden ist, und wobei die Frontplatte (5) und die Motorhalterung (4) als Kunststoff- oder Metallspritzgussteile ausgebildet sind und die Abstandhalter (21 ) als Kunststoff- und/oder Metallspritzgussteile einstückig mit der Frontplatte (5) oder der Motorhalterung (4) ausgebildet sind.1. Diagonal fan, consisting of a Diagonallüfterrad (1) which is mounted on a rotor (2) of an external rotor motor (3) and between a front plate (5) with a particular central inlet opening (6) and a motor mount (4), wherein the motor mount (4) is connected to the front panel (5) by a plurality of circumferentially arranged spacers (21), and wherein the front panel (5) and motor mount (4) are formed as plastic or metal injection molded parts and the spacers (21) are plastic - And / or metal injection molded parts are integrally formed with the front plate (5) or the motor mount (4).
2. Diagonallüfter nach Anspruch 1 , dadurch gekennzeichnet, dass die Abstandhalter (21 ) aus flachen Stegen (23) bestehen, die ein Querschnittsprofil besitzen, dessen Höhe bzw. Breite größer ist als die Dicke, und wobei die Stege (23) insbesondere derart ausgerichtet sind, dass sie in Ausströmrichtung des aus dem Diagonallüfterrades (1 ) austretenden Strömungsmediums geneigt verlaufen.2. Diagonal fan according to claim 1, characterized in that the spacers (21) consist of flat webs (23) having a cross-sectional profile whose height or width is greater than the thickness, and wherein the webs (23) in particular aligned are that they are inclined in the outflow direction of the emerging from the Diagonallüfterrades (1) flow medium.
3. Diagonallüfter nach Anspruch 2, dadurch gekennzeichnet, dass die Abstandhalter (21 ) einstückig an der Motorhalterung (4) angeformt und mit ihren freien Enden an der Frontplatte (5) über eine lösbare Verbindung, insbesondere eine Schraubverbindung, befestigt sind.3. Diagonal fan according to claim 2, characterized in that the spacers (21) integrally formed on the motor mount (4) and with their free ends on the front panel (5) via a releasable connection, in particular a screw, are attached.
4. Diagonallüfter nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Abstandhalter (21 ) aus jeweils zwei parallel verlaufenden Stegen (23) gebildet sind. 4. Diagonal fan according to claim 2 or 3, characterized in that the spacers (21) are each formed of two parallel webs (23).
5. Diagonallüfter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Stege (23) der Abstandhalter (21 ) an ihren freien Enden ein plattenförmiges Verbindungselement (27) aufweisen.5. Diagonal fan according to one of claims 1 to 4, characterized in that the webs (23) of the spacers (21) at their free ends a plate-shaped connecting element (27).
6. Diagonallüfter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Frontplatte (5) auf ihrer den Abstandhaltern (21 ) zugewandten Rückseite Lagervorsprünge (28) besitzt, an denen die Stege (23) befestigbar sind.6. Diagonal fan according to one of claims 1 to 5, characterized in that the front plate (5) on its spacers (21) facing the rear bearing projections (28), on which the webs (23) can be fastened.
7. Diagonallüfter nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass im Bereich der Verbindungselemente (27) und/oder der Lagervorsprünge (28) Hohlkammern (20, 20a) zur Aufnahme von insbesondere elektronischen Bauteilen ausgebildet sind.7. Diagonal fan according to claim 5 or 6, characterized in that in the region of the connecting elements (27) and / or the bearing projections (28) hollow chambers (20, 20a) are formed for receiving in particular electronic components.
8. Diagonallüfter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die paarweise ausgebildeten Stege (23) über mindestens einen Brückensteg (29) miteinander verbunden sind.8. Diagonal fan according to one of claims 1 to 7, characterized in that the paired webs (23) via at least one bridge web (29) are interconnected.
9. Diagonallüfter nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Stege (23) jeweils aus einem ersten Stegschenkel (24) bestehen, der sich etwa radial nach außen vom Umfangsrand (22) der Motorhalterung (4) erstreckt, und aus einem zweiten, etwa in axialer Richtung verlaufenden Stegschenkel (26), wobei der erste Stegschenkel (24) über eine ca. 90°-Biegung in den zweiten Stegschenkel (26) übergeht.9. Diagonal fan according to one of claims 1 to 8, characterized in that the webs (23) each consist of a first web leg (24) extending approximately radially outwardly from the peripheral edge (22) of the motor mount (4), and from a second, approximately in the axial direction extending web leg (26), wherein the first web leg (24) passes over an approximately 90 ° bend in the second web leg (26).
10. Diagonallüfter nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Frontplatte (5) insbesondere auf ihrer Rückseite eine Rippenstruktur (25) aufweist. 10. Diagonal fan according to one of claims 1 to 9, characterized in that the front plate (5) in particular on its rear side has a rib structure (25).
11. Diagonallüfter nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Motorhalterung (4) aus einer kreisförmigen Halteplatte (18) besteht, an deren Umfangsrand (22) die Abstandhalter (21 ) angeformt sind.11. Diagonal fan according to one of claims 1 to 10, characterized in that the motor holder (4) consists of a circular retaining plate (18), at the peripheral edge (22), the spacers (21) are integrally formed.
12. Diagonallüfter nach einem der Ansprüche 1 bis 11 , dadurch gekennzeichnet, dass an der Motorhalterung (4) der Außenläufermotor (3) mittels seines Stators (16) über Schrauben befestigbar ist.12. Diagonal fan according to one of claims 1 to 11, characterized in that on the motor mount (4) of the external rotor motor (3) by means of its stator (16) can be fastened by screws.
13. Diagonallüfter nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das Diagonallüfterrad (1 ) aus einer den Rotor (2) des Außenläufermotors (3) umfassenden Nabe (9) besteht, an deren Umfang die Lüfterflügel (11 ) angeordnet sind und die Lüfterflügel (11 ) von einem Luftführungsmantel (12) umgeben sind.13. Diagonal fan according to one of claims 1 to 12, characterized in that the Diagonallüfterrad (1) consists of a rotor (2) of the external rotor motor (3) comprising the hub (9), on whose circumference the fan blades (11) are arranged and the fan blades (11) are surrounded by an air guide casing (12).
14. Diagonallüfter nach Anspruch 13, dadurch gekennzeichnet, dass die Nabe (9) und der Luftführungsmantel (12) in der Form zweier zueinander konzentrischer Kegelstümpfe ausgebildet sind.14. Diagonal fan according to claim 13, characterized in that the hub (9) and the air guide casing (12) are formed in the form of two mutually concentric truncated cones.
15. Diagonallüfter nach Anspruch 13 oder 14, dadurch gekennzeichnet, dass der Luftführungsmantel (12) mit den äußeren Enden der Lüfterflügel (11 ) einstückig verbunden ist. 15. Diagonal fan according to claim 13 or 14, characterized in that the air guide casing (12) with the outer ends of the fan blades (11) is integrally connected.
EP09783559.9A 2008-11-07 2009-09-29 Diagonal fan Active EP2329149B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008056459A DE102008056459A1 (en) 2008-02-19 2008-11-07 diagonal fan
PCT/EP2009/062627 WO2010052074A1 (en) 2008-11-07 2009-09-29 Diagonal fan

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EP2329149A1 true EP2329149A1 (en) 2011-06-08
EP2329149B1 EP2329149B1 (en) 2014-05-07

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WO2010052074A1 (en) 2010-05-14
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EP2329149B1 (en) 2014-05-07
ES2472840T3 (en) 2014-07-03

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