EP2236838A1 - Radial fan - Google Patents
Radial fan Download PDFInfo
- Publication number
- EP2236838A1 EP2236838A1 EP09004232A EP09004232A EP2236838A1 EP 2236838 A1 EP2236838 A1 EP 2236838A1 EP 09004232 A EP09004232 A EP 09004232A EP 09004232 A EP09004232 A EP 09004232A EP 2236838 A1 EP2236838 A1 EP 2236838A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- blower according
- electric motor
- motor
- rotor
- 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
Links
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- 230000007613 environmental effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
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- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5813—Cooling the control unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- 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
- F04D25/068—Mechanical details of the pump control unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/424—Double entry casings
Definitions
- the invention relates to a radial fan, with at least one axial air inlet opening and a radial Heilausblasö réelle, consisting of a housing assembly and a fan assembly comprising an electric motor and a fan, said housing assembly at least one holding part, which is arranged in the region of the axial air inlet opening and to the stored Receiving a supporting part of the fan assembly is used, and two releasably interconnectable, the air inlet opening dividing shell parts, between which the holding part is fixed in the assembled state.
- a fan of this kind is from the German patent DE 198 41 762 C2 known and has proven itself in practice.
- Double-entry means that the radial fan has two inlet ports located on axially opposite sides of the fan. Also for that in the DE 198 41 762 C2 described blower is described as a preferred embodiment of such a double-flow design.
- an electric motor is used, which is mounted vibration-isolating on both sides in an elastic element. About a partially hollow axis, the connecting cable, starting from the motor, out via a support arm to one of the housing assembly associated terminal box.
- the electric motor is an AC motor, which is designed as a closed external rotor motor.
- the ends of the connecting leads of the motor are connected and both a required operating capacitor, as well as fuses and a terminal strip for pluggable connection of a motor connection cable housed.
- the invention is based on the object to provide a blower of the generic type described above, which has a significant weight reduction compared to the known blower and the lower energy consumption can promote at least the same amount of air. In this case, the noise levels of the fan should not increase.
- This task is related to demands from legislators and consumers for improved mass-to-power ratios of such fans.
- the electric motor of the fan assembly is an electronically commutated DC motor (hereinafter: EC motor).
- the electric motor according to the invention is a brushless DC machine, in which the rotor has permanent magnets and the stator has a plurality of magnetic coils.
- the stator can be designed in particular in three-phase.
- the coil strands of the stator are connected for electronic commutation via a bridge circuit, in which transistors, such as preferably metal oxide semiconductor field effect transistors (MOSFET) or insulated gate bipolar transistors (IGBT) can be used.
- MOSFET metal oxide semiconductor field effect transistors
- IGBT insulated gate bipolar transistors
- the circuit can be designed as an integrated circuit (power IC), so that one speaks of a Umrichtelektronik
- This electronics is essentially a three-phase controller, as it is also used in Frequenzumrichtem, so that the electric motor with DC voltage can be fed. Since such electronics can also fulfill other functions in addition, the term control electronics is used in this regard.
- blower according to the invention can advantageously because of the high engine efficiency and its compact design with the same construction volumes and significantly reduced masses as in the known blower higher - or at lower volumes and masses same - benefits are achieved.
- the motor may have a rigid axis as the AC motor of the known fan, wherein the stator of the motor is fixed on the axis.
- it is also an external rotor motor whose two-sided axle ends can be fastened in carrier elements of the fan.
- An inventive fan can be constructed modularly in an advantageous manner, as will be shown in detail below, wherein the individual basic elements can be mounted by simply plugging and clipping or screwing. The assembly times can be kept extremely short.
- the motor is sensor-controlled, wherein the position of the rotor by at least one magnetic, electrical or optical position sensor, for. B. a Hall sensor, a field plate or a potentiometer is detected.
- the reverse voltage is linearly dependent on the engine speed and the exciter strength and can therefore also be used to precisely set the speed. It exists So hereby further advantageous with the ability to use these and other control functions of the EC motor in the fan according to the invention.
- the additional advantage compared to a sensor-controlled EC motor in position detection via the reverse voltage is also the fact that no - sometimes fault-prone - position sensors must be used.
- the control electronics are usually integrated in the engine and can be correspondingly large depending on the power of the engine.
- this electronics which is not required in AC motors, especially in the intake of the blower, because there can be done by the sucked air sufficient cooling, so that a prescribed operating temperature is not exceeded. Cooling is essential for the functionality of the electronics.
- a certain obstruction is produced in the intake area of the blower, which can disadvantageously result in an uneven distribution of the sucked-in air, especially in the case of double-sidedly sucking blowers.
- control electronics housed separately from the EC motor in a terminal box, as it is known from the prior art in AC motors - but there to accommodate the motor terminals, the operating capacitor, etc. -. Since the electronics are arranged at a distance from the motor in the terminal box, unfavorable mutual influences are prevented, and the motor and electronic components complement each other optimally.
- a special electronics module to be cooled that is essentially a circuit board on which the control electronics is arranged or connected, can be inserted into a recess of the terminal box or to a slot on the underside of the fan.
- a heat sink of the electronic module can protrude into a corresponding recess on the lower housing shell and thus be in direct contact with the air flow inside the fan.
- the stator of the EC motor can be completely encapsulated with a Umgussmaterial, preferably a thermosetting plastic, whereby optimal heat dissipation from the engine can be achieved and all live parts are isolated and protected against contact.
- the rotating rotor - in contrast to the known DC motors - not open as a closed bell, but be performed on both sides open at the ends.
- a high IP protection class It is known that the degree of protection against contact, foreign bodies, such as dust, and moisture is understood by this IP protection class according to the EN 60529 standard.
- the openings cause the air conveyed by the fan to flow around the stator Stator existing gap is performed, which counteracts excessive heating of the engine components in advance.
- blower according to the invention Due to the above-mentioned spatially separate combination of EC motor and electronic module, an adaptation of the blower according to the invention to the most varied customer interfaces is also possible in a quick and simple manner.
- a preferred field of application are extractor hoods, where the fan according to the invention can be used. Especially in this area will be previously used because of the humid and often greasy exhaust fan with closed AC motors.
- the invention provides an efficient and energy-saving alternative with a simple possibility of substitution.
- Each power range, whether with or without additionally required electronics, with partial electronics or full electronics, can be covered by the blower according to the invention. Possible different gradations of the electronic modules can be adapted to the different air outputs of the fan.
- a fan according to the invention has at least one axial air inlet opening 1 - in the present preferred case, double-flooded, as Fig. 2 shows, two axially opposite air inlet openings 1 - and a radial Beerausblasö réelle 2.
- the blower according to the invention consists of a housing assembly and a fan assembly, the latter comprising an electric motor 3 and a fan 4.
- the invention is particularly suitable for an embodiment in which, as in the illustration shown, the electric motor 3 is designed as an external rotor motor.
- the housing assembly comprises at least one holding part 5, in the illustrated case, two holding parts 5, which are each arranged in the region of the axial air inlet opening 1 and serve for the bearing receiving a support member 6 of the fan assembly.
- the support member 6 is how Fig. 2 to 5 show, as an elongated, held with their ends held in the holding parts 5 support shaft, on the one hand, the stator 30 of the electric motor 3 sits rotationally, as shown in Fig. 3 is shown in detail, and on the other hand, the rotor 40 is rotatably supported as an external rotor.
- the housing assembly further comprises two releasably interconnectable, the air inlet opening 1 dividing shell parts 71, 72, an upper half-shell part 71 and a lower half-shell part 72, between which the holding part 5 is held in the assembled state.
- the separation point between the shell parts 71, 72 lies in a plane which runs approximately centrally to the exhaust opening 2 and the axial position of the motor 3.
- the shell parts 71, 72 are preferably made of plastic, so that the individual components of the housing assembly can be advantageously produced by injection molding.
- the shell parts 71, 72 are connected to each other in the embodiment shown by means of brackets 8.
- brackets 8 In order to hold the upper and the lower shell part 71, 72, a total of four brackets 8 are mounted, two of which in the illustration Fig. 1 are arranged in the rear region of the housing and two in the front region of the housing laterally of the air inlet openings 1 and the Heilausblasö réelle 2.
- the holding parts 5 have in particular in its basic shape annular, braced frame 9.
- the strut is formed by three star-shaped interconnected support arms 10.
- the support arms 10 extend in each case arcuately outward from the center of the holding part 5 and are connected there to the frame 9.
- the space between struts and frame 9 of the holding part 5 respectively forms the axial air inlet opening. 1
- Fig. 2 shows, is out of the electric motor 3, the support member 6 as a standing - that is not rotating - support axis led out on both sides. At least one held in the holding part 5 end of the support shaft - this shows more clearly Fig. 3 - Has an inner guide channel 11 for receiving connection lines 12 for the electric motor 3.
- the axis is thus partially, starting from an axle end, designed as a hollow shaft.
- the connection lines 12 are brought by the guide channel 11 into the interior of the electric motor 3 to the stator 30.
- the mold also ensures that a high area moment of inertia of the support member 6 sets, which in terms of bending and possibly also torsional load - is of importance.
- the area moment of inertia, together with the modulus of elasticity, is a measure of the stiffness of a plane cross-section with respect to the load cases mentioned. In this way, no steel shaft needs to be used without impairing the strength or stability of the stator 30 and without requiring an enlargement of the geometric dimensions.
- connection lines 12 which are not connected to the stator 30 can be guided by a support arm 10a which is advantageously a cable channel and terminate in a terminal box 13 in which, for example, fuses and similar components as well as a terminal strip for pluggable connection of an external motor connection cable, not shown ,
- the terminal box 13 which is in Fig. 1 . 7 and 8th is shown, belongs to the housing assembly and is on one of the shell parts 71, 72, in particular on the lower shell part 72 releasably fastened. To attach a screw can be provided or - as shown - a catch.
- the electric motor 3 of the fan assembly is an electronically commutated DC motor. Due to the low mass of such EC motor, on the other hand with respect to a known blower increased blower power can be achieved, can also be achieved with known means also a very good Entkoppelungstex, as far as the reduction of structure-borne noise and bearing noise.
- Fig. 2 shows - elastic elements 14 attached, which serve for the vibration-insulating mounting of the electric motor 3 to the holding parts 5.
- the attached on the side of the electrical connection lines 12 elastic element 14 is penetrated by these lines.
- the elastic elements 14 are preferably each formed in one piece, but each consist of three axially behind the other unspecified sections. These are a non-rotatably connected to the holding part 5 carrier-connecting portion, a rotationally fixed to the support member 6 connected motor-connecting portion and arranged between the two connecting portions elastically twistable intermediate portion.
- the respective elastic element 14 can be connected to the support part 6 and / or to the holding part 5 by means of positive-locking plug connections, which thereby prevent relative rotation, in the direction of rotation of the electric motor 3.
- the stator 30 of the motor 3 can be encapsulated with advantage and thus protected against environmental influences, while the rotor 40 may be preferably opened on both sides, so that the heat generated in the stator 30 can be easily removed from the motor 3 out.
- FIG Fig. 3 the illustration in FIG Fig. 3 in that the stator 30 is completely surrounded by an encapsulation material 15 for the laminated stator core 16, the windings 17 and all other components known to be present, such as the electrical connection lines 12.
- the material may preferably be a duroplastic. All live parts are thereby isolated and can not be touched, which, as mentioned above, ensures a high IP protection class and the fan according to the invention for use in cooker hoods particularly predestined.
- the encapsulation of the stator 30 makes it possible, without detriment to the quality of the degree of protection, to provide the rotating rotor 40 with openings 18 on both sides at its end faces, even in the more critical climate applications Fig. 1 . 4 and 5 illustrate.
- the openings 18 allow the air - acting as cooling air - flows around the stator 30 and thus ensures optimum heat dissipation.
- a shorter motor assembly can be used in many cases, which is advantageously associated with lower production costs.
- the use of an EC motor according to the invention implies, as mentioned, the necessity of the presence of special electronics for electronic commutation.
- the motor 3 may preferably be sensorlessly controlled, the position of the rotor 40 being determined by one in the stator windings 17 of the stator 30 induced reverse voltage is detected.
- Exemplary are in Fig. 7 and 8th for this control electronics components designated by the reference numeral 19.
- control electronics 19 may advantageously be arranged separately from the motor 3 in the housing assembly. This avoids obstruction of the air intake existing in known EC motors.
- control electronics 19 can be arranged in the terminal box 13, thereby advantageously simultaneously assumes the function of an electronics housing.
- a separate electronics housing can be omitted.
- the control electronics 19 may preferably form a mountable as a whole electronic module, which can be inserted into a recess or to a designated mounting position of the terminal box 13, in particular plugged.
- a heat sink 20 may be provided which projects into a recess 21 in the housing shell 72 from the terminal box 13 in the space formed by the housing shells 71, 72 and the so in direct contact with the air flow inside the fan stands. By applying the forced air, an optimal flow around the heat sink 20 takes place.
- the heat sink 20 in terms of efficient cooling and in adaptation to the space in the terminal box 13 - as also out Fig.
- the production or assembly of the blower according to the invention is simple, with a modular design in which the individual basic elements can be mounted by simply plugging and clipping or screwing, a short assembly time and optimal adaptation to different user interfaces can be achieved.
- stator 30 For the manufacture of the blower according to the invention, first the manufacture of the stator 30 or a stator assembly (including the support member 6), as these in Fig. 3 is shown.
- the stator assembly comprises the laminated stator core 16 and the stator winding 17 with the connecting line 12, which is guided through the unilaterally hollow axis to the connection points on the stator.
- the stator assembly is encapsulated with the plastic casting 15.
- a front-side flange 22 of the rotor 40 is first pushed over the connecting cable 12 and then on the axis (support member 6).
- This unit as well as the opposite flange 22 of the rotor 40 are then attached to a prefabricated fan unit, the Fig. 6 shows, by means of screws 23 which are guided through the holes 24 on the rotor flange 22, attached.
- Prefabricated fan unit means that this includes both the fan 4 with its fan blades 25, and the rotor 40 of the motor 3.
- the fan 4 with the fan blades 25 and the rotor 40 form a one-piece component.
- the rotor 40 can - see Fig. 2 and 7 - Be formed of a return ring 26, on the inside magnet segments 27 are attached and the outside approximately tubular is overmolded with a plastic wrap 28.
- the magnet segments 27 can, as Fig. 2 shows, be pre-assembled in two axially adjacent rows, each with a plurality of magnetic segments 27 and circumferentially to each other have a small circumferential angular offset.
- single-row magnet segments 27 or a magnetic tape are possible,
- the plastic sheath 28 is in the illustrated embodiment of the invention over a right angle to the motor axis, in particular centrally disposed disk-shaped region 29 in the fan blades 25 via.
- the preassembled fan unit has an advantageously compact design.
- the unit fulfills the electrotechnical function of the rotor 40 and is also designed as a fan blade assembly to fulfill the fluidic tasks
- the use of material of metal is limited to the return ring 26, so that over conventional fan assemblies and a weight reduction can be achieved.
- a surface treatment of the rotor body in the sense of corrosion protection can advantageously be dispensed with because of the complete plastic extrusion coating 28.
- a charge drain at electrostatically charged return ring 26 by foreign currents for example via a rotor shaft (which is not present as such in the fan according to the invention) or on the shaft bearing 60, which sit centrally in the end flanges 22, which thus form bearing flanges of the motor 3, not occur because the rotor 40 is completely isolated by the plastic
- this unit is on both sides of the support member 6 with the in Fig. 2 provided vibration-isolating elastic elements 14, which are preferably used in additional outside of the elastic elements 14 existing bell-shaped support members 70.
- This unit is now centrally connected to the holding parts 5, in particular inserted into the holding parts 5 and inserted between the shell parts 71, 72 of the housing assembly.
- the heat sink 20 is inserted into the recess 21 of the shell part 72, so that it can be swept by the air flow during operation of the fan and thus can be cooled.
- the present invention is not limited to the illustrated embodiment, but includes all the same in terms of the invention means and measures, for. B. also a single-flow fan.
- the design of the stator 30 or rotor 40 of the blower according to the invention may be different from those described above, without departing from the scope of the invention, but the described electric motor 3 and its use is also attributed independent inventive importance.
- the invention is not limited to the feature combination defined in claim 1, but may also be defined by any other combination of certain features of all individually disclosed features. This means that in principle virtually every individual feature of the independent claim can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claim form is to be understood only as a first formulation attempt for an invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
Die Erfindung betrifft ein Radialgebläse, mit mindestens einer axialen Lufteintrittsöffnung und einer radialen Luftausblasöffnung, bestehend aus einer Gehäusebaugruppe und einer Lüfterbaugruppe, welche einen Elektromotor und ein Lüfterrad umfasst, wobei die Gehäusebaugruppe mindestens ein Halteteil, das im Bereich der axialen Lufteintrittsöffnung angeordnet ist und zur lagernden Aufnahme eines Tragteils der Lüfterbaugruppe dient, und zwei lösbar miteinander verbindbare, die Lufteintrittsöffnung teilende Schalenteile aufweist, zwischen denen das Halteteil im Montagezustand befestigt ist.The invention relates to a radial fan, with at least one axial air inlet opening and a radial Luftausblasöffnung, consisting of a housing assembly and a fan assembly comprising an electric motor and a fan, said housing assembly at least one holding part, which is arranged in the region of the axial air inlet opening and to the stored Receiving a supporting part of the fan assembly is used, and two releasably interconnectable, the air inlet opening dividing shell parts, between which the holding part is fixed in the assembled state.
Ein Gebläse dieser Art ist aus der deutschen Patentschrift
In vielen Haushaltsanwendungen, Klimaanwendungen sowie anderen Bereichen werden verstärkt sogenannte doppelflutige Radialgebläse eingesetzt. Doppelflutig bedeutet, dass das Radialgebläse zwei Einlassöffnungen besitzt, die sich auf axial gegenüberliegenden Seiten des Gebläses befinden. Auch für das in der
Der Erfindung liegt die Aufgabe zu Grunde, ein Gebläse der vorstehend beschriebenen, gattungsgemäßen Art zu schaffen, das bei im Vergleich zum bekannten Gebläse eine deutliche Gewichtsreduzierung aufweist und das niedrigerem Energieverbrauch mindestens die gleiche Luftmenge fördern kann. Hierbei sollen auch die Geräuschwerte des Gebläses nicht ansteigen. Diese Aufgabe steht im Zusammenhang mit Forderungen von Gesetzgebern sowie Verbrauchern nach verbesserten Masse-Leistungs-Verhältnisse derartiger Gebläse.The invention is based on the object to provide a blower of the generic type described above, which has a significant weight reduction compared to the known blower and the lower energy consumption can promote at least the same amount of air. In this case, the noise levels of the fan should not increase. This task is related to demands from legislators and consumers for improved mass-to-power ratios of such fans.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Elektromotor der Lüfterbaugruppe ein elektronisch kommutierter Gleichstrommotor (im Weiteren: EC-Motor) ist.This object is achieved in that the electric motor of the fan assembly is an electronically commutated DC motor (hereinafter: EC motor).
Es handelt sich somit beim Elektromotor gemäß der Erfindung um eine bürstenlose Gleichstrommaschine, bei der der Rotor Permanentmagneten und der Stator mehrere Magnetspulen aufweist Der Stator kann insbesondere dreiphasig ausgeführt sein. Die Spulenstränge des Stators werden zur elektronischen Kommutierung über eine Brückenschaltung geschaltet, in der Transistoren, wie bevorzugt Metalloxid-Halbleiter-Feldeffekt-Transistoren (MOSFET) oder Bipolartransistoren mit isolierter Gate-Elektrode (IGBT), eingesetzt werden können. Insbesondere bei kleineren Leistungen kann die Schaltung als integrierter Schaltkreis (Leistungs-IC) ausgeführt sein, so dass man auch von einer Umrichtelektronik spricht Diese Elektronik stellt dem Wesen nach einen Drehstromregler dar, wie er ähnlich auch in Frequenzumrichtem verwendet wird, so dass der Elektromotor mit Gleichspannung gespeist werden kann. Da eine solche Elektronik auch zusätzlich noch andere Funktionen erfüllen kann, wird im Weiteren diesbezüglich der Ausdruck Steuerelektronik verwendet.Thus, the electric motor according to the invention is a brushless DC machine, in which the rotor has permanent magnets and the stator has a plurality of magnetic coils. The stator can be designed in particular in three-phase. The coil strands of the stator are connected for electronic commutation via a bridge circuit, in which transistors, such as preferably metal oxide semiconductor field effect transistors (MOSFET) or insulated gate bipolar transistors (IGBT) can be used. In particular, at lower power, the circuit can be designed as an integrated circuit (power IC), so that one speaks of a Umrichtelektronik This electronics is essentially a three-phase controller, as it is also used in Frequenzumrichtem, so that the electric motor with DC voltage can be fed. Since such electronics can also fulfill other functions in addition, the term control electronics is used in this regard.
Mit dem erfindungsgemäßen Gebläse können vorteilhafterweise wegen des hohen Motor-Wirkungsgrads und dessen kompakter Bauweise bei gleichen Bauvolumina und deutlich reduzierten Massen wie bei dem bekannten Gebläse höhere - oder bei geringeren Bauvolumina und Massen gleiche - Leistungen erzielt werden.With the blower according to the invention can advantageously because of the high engine efficiency and its compact design with the same construction volumes and significantly reduced masses as in the known blower higher - or at lower volumes and masses same - benefits are achieved.
Der Motor kann dabei wie der Wechselstrommotor des bekannten Gebläses eine starre Achse aufweisen, wobei der Stator des Motors auf der Achse fixiert ist. Es handelt sich also erfindungsgemäß ebenfalls um einen Außenläufermotor, dessen beidseitige Achsenden in Trägerelementen des Gebläses befestigt werden können.The motor may have a rigid axis as the AC motor of the known fan, wherein the stator of the motor is fixed on the axis. Thus, according to the invention, it is also an external rotor motor whose two-sided axle ends can be fastened in carrier elements of the fan.
Hierbei kann eine der Reduzierung von Körperschall und Lagergeräuschen dienende Entkopplung des Antriebs in bewährter Weise - wie eingangs erwähnt - über Elastikelemente, wie Elastomerteile, die über ein Fixierteil an der Achse angebracht sind, enfolgen. Durch den vergleichsweise sehr massearmen EC-Motor lässt sich so ein sehr gutes Entkoppelungsergebnis erreichen.Here, one of the reduction of structure-borne noise and bearing noise serving decoupling of the drive in a proven manner - as mentioned - on elastic elements, such as elastomeric parts, which are attached via a fixing part on the axis, enfolgen. Due to the comparatively very low-mass EC motor, a very good decoupling result can be achieved.
Ein erfindungsgemäßes Gebläse kann in vorteilhafter Weise, wie nachfolgend noch im Detail dargestellt wird, modular aufgebaut sein, wobei die einzelnen Grundelemente durch einfaches Zusammenstecken und Verclipsen bzw. Verschrauben montiert werden können. Die Montagezeiten können dadurch äußerst kurz gehalten werden.An inventive fan can be constructed modularly in an advantageous manner, as will be shown in detail below, wherein the individual basic elements can be mounted by simply plugging and clipping or screwing. The assembly times can be kept extremely short.
Erfindungsgemäß kann, was die elektronische Kommutierung betrifft, vorgesehen sein, dass der Motor sensorgesteuert ist, wobei die Stellung des Rotors durch mindestens einen magnetischen, elektrischen oder optischen Lagesensor, z. B. einen Hall-Sensor, eine Feldplatte oder ein Potentiometer, detektiert wird.According to the invention, as regards the electronic commutation, be provided that the motor is sensor-controlled, wherein the position of the rotor by at least one magnetic, electrical or optical position sensor, for. B. a Hall sensor, a field plate or a potentiometer is detected.
Besonders bevorzugt ist es jedoch, einen solchen EC-Motor einzusetzen, der sensorlos gesteuert ist, wobei die Stellung des Rotors durch eine in den Spulen des Stators induzierte Gegenspannung detektiert und diese Gegenspannung über entsprechend aufbereitete Signale zur Festlegung der Kommutierungszeitpunkte verwendet wird.However, it is particularly preferred to use such an EC motor, which is sensorlessly controlled, the position of the rotor being detected by a countervoltage induced in the coils of the stator and this countervoltage being used via appropriately conditioned signals for determining the commutation times.
Die Gegenspannung ist linear abhängig von der Motordrehzahl und der Erregerstärke und kann daher auch dazu benutzt werden, um die Drehzahl exakt einzustellen. Es besteht also hiermit des Weiteren mit Vorteil die Möglichkeit, diese und andere Steuer- und Regelfunktionen des EC-Motors in dem erfindungsgemäßen Gebläse zu nutzen. Der zusätzliche Vorteil gegenüber einem sensorgesteuerten EC-Motor besteht bei der Positionsdetektierung über die Gegenspannung auch darin, dass keine - manchmal störanfälligen - Positionssensoren verwendet werden müssen.The reverse voltage is linearly dependent on the engine speed and the exciter strength and can therefore also be used to precisely set the speed. It exists So hereby further advantageous with the ability to use these and other control functions of the EC motor in the fan according to the invention. The additional advantage compared to a sensor-controlled EC motor in position detection via the reverse voltage is also the fact that no - sometimes fault-prone - position sensors must be used.
Bei EC-Motoren ist die Steuerelektronik üblicherweise in den Motor integriert und kann je nach der Leistung des Motors entsprechend groß sein. Dabei befindet sich diese Elektronik, die in Wechselstrommotoren nicht erforderlich ist, insbesondere im Ansaugbereich des Gebläses, weil dort auch durch die angesaugte Luft eine ausreichende Kühlung erfolgen kann, damit eine vorgeschriebene Arbeitstemperatur nicht überschritten wird. Eine Kühlung ist für die Funktionsfähigkeit der Elektronik nämlich unabdingbar notwendig. Dadurch wird aber im Ansaugbereich des Gebläses eine gewisse Versperrung erzeugt, durch die gerade bei doppelseitig saugenden Gebläsen nachteiligerweise eine ungleichmäßige Verteilung der angesaugten Luft entstehen kann.For EC motors, the control electronics are usually integrated in the engine and can be correspondingly large depending on the power of the engine. In this case, there is this electronics, which is not required in AC motors, especially in the intake of the blower, because there can be done by the sucked air sufficient cooling, so that a prescribed operating temperature is not exceeded. Cooling is essential for the functionality of the electronics. As a result, however, a certain obstruction is produced in the intake area of the blower, which can disadvantageously result in an uneven distribution of the sucked-in air, especially in the case of double-sidedly sucking blowers.
In vorteilhafter Ausführungsform der Erfindung kann daher vorgesehen sein, dass die Steuerelektronik vom EC-Motor getrennt in einem Klemmenkasten untergebracht ist, wie er auch aus dem Stand der Technik bei Wechselstrommotoren - jedoch dort zur Aufnahme der Motoranschlüsse, des Betriebskondensators usw. - bekannt ist. Da die Elektronik in räumlicher Distanz vom Motor im Klemmenkasten angeordnet ist, sind ungünstige gegenseitige Beeinflussungen unterbunden, und die Motor- und ElektronikBauteile ergänzen sich optimal.In an advantageous embodiment of the invention can therefore be provided that the control electronics housed separately from the EC motor in a terminal box, as it is known from the prior art in AC motors - but there to accommodate the motor terminals, the operating capacitor, etc. -. Since the electronics are arranged at a distance from the motor in the terminal box, unfavorable mutual influences are prevented, and the motor and electronic components complement each other optimally.
Insbesondere kann ein speziell zu kühlendes Elektronikmodul, also im Wesentlichen eine Platine, auf der die Steuerelektronik angeordnet bzw, geschaltet ist, in eine Aussparung des Klemmenkastens oder an einen Steckplatz an der Unterseite des Gebläses einsetzbar sein. Ein Kühlkörper des Elektronikmoduls kann dabei in eine korrespondierende Aussparung an der unteren Gehäuseschale einragen und so in unmittelbarem Kontakt mit dem Luftstrom im Inneren des Gebläses stehen. Durch die Beaufschlagung mit der Gebläseluft erfolgt eine optimale Umströmung des Kühlkörpers, ohne dass aber dabei das Gebläseinnenvolumen vermindert oder der Luftstrom gestört wird.In particular, a special electronics module to be cooled, that is essentially a circuit board on which the control electronics is arranged or connected, can be inserted into a recess of the terminal box or to a slot on the underside of the fan. A heat sink of the electronic module can protrude into a corresponding recess on the lower housing shell and thus be in direct contact with the air flow inside the fan. By the Exposure to the fan air is an optimal flow around the heat sink, but without the fan internal volume is reduced or the air flow is disturbed.
Da im Motor dann keine Temperaturbegrenzung durch Elektronikbauteile zu beachten ist, kann durch die Trennung von Motor und Elektronik für den Motor eine höhere Eigenerwärmung des Motors zugelassen werden, nämlich beispielsweise eine solche, wie sie sich gemäß der zulässigen Temperaturbelastung von zur Isolation des Motors eingesetzten Werkstoffen ergibt.Since no temperature limitation by electronic components is to be considered in the motor, a higher self-heating of the motor can be allowed by the separation of motor and electronics for the motor, namely, for example, such as they are in accordance with the permissible temperature load of materials used to isolate the motor results.
Der Stator des EC-Motors kann dabei komplett mit einem Umgussmaterial, vorzugsweise einem Duroplast, verkapselt sein, wodurch eine optimale Wärmeabfuhr vom Motor erreicht werden kann sowie alle stromführenden Teile isoliert und gegen Berührung geschützt sind.The stator of the EC motor can be completely encapsulated with a Umgussmaterial, preferably a thermosetting plastic, whereby optimal heat dissipation from the engine can be achieved and all live parts are isolated and protected against contact.
Bei einer derartigen Verkapselung des Stators kann der umlaufende Rotor - im Gegensatz zu den bekannten Gleichstrommotoren - nicht als geschlossene Glocke, sondern beidseitig an den Stirnseiten geöffnet ausgeführt werden. Trotz eines solchen offenen Rotors lässt sich aber wegen der allseitigen Umhüllung des Stators eine hohe IP-Schutzklasse erreichen. Bekanntermaßen versteht man unter dieser IP-Schutzklasse gemäß der Norm EN 60529 den Schutzgrad gegenüber Berührung, Fremdkörpern, wie Staub, und Feuchtigkeit Die Öffnungen bewirken dabei, dass die durch das Gebläse geförderte Luft den Stator umströmt, wobei sie auch durch den üblicherweise zwischen Rotor und Stator vorhandenen Spalt geführt wird, was einer zu starken Erwärmung der Motorbauteile im Voraus entgegenwirkt.In such an encapsulation of the stator, the rotating rotor - in contrast to the known DC motors - not open as a closed bell, but be performed on both sides open at the ends. Despite such an open rotor but can be achieved because of the all-round wrapping of the stator, a high IP protection class. It is known that the degree of protection against contact, foreign bodies, such as dust, and moisture is understood by this IP protection class according to the EN 60529 standard. The openings cause the air conveyed by the fan to flow around the stator Stator existing gap is performed, which counteracts excessive heating of the engine components in advance.
Durch die genannte, räumlich getrennte Kombination von EC-Motor und Elektronikmodul ist des Weiteren auch in schneller und einfacher Weise eine Anpassung des erfindungsgemäßen Gebläses an die unterschiedlichsten Kundenschnittstellen möglich. Ein bevorzugter Einsatzbereich sind dabei Dunstabzugshauben, wo das erfindungsgemäße Gebläse Verwendung finden kann. Insbesondere in diesem Bereich werden bisher wegen der feuchten und oft fetthaltigen Abluft Gebläse mit geschlossenen Wechselstrommotoren eingesetzt. Die Erfindung stellt dazu eine effiziente und energiesparende Alternative mit einfacher Möglichkeit der Substitution dar. Jeder Leistungsbereich, ob ohne oder mit zusätzlich geforderter Elektronik, mit Teilelektronik oder Vollelektronik, kann durch das erfindungsgemäße Gebläse abgedeckt werden. Dabei können mögliche unterschiedliche Abstufungen der Elektronikmodule den unterschiedlichen Luftleistungen des Gebläses angepasst werden.Due to the above-mentioned spatially separate combination of EC motor and electronic module, an adaptation of the blower according to the invention to the most varied customer interfaces is also possible in a quick and simple manner. A preferred field of application are extractor hoods, where the fan according to the invention can be used. Especially in this area will be previously used because of the humid and often greasy exhaust fan with closed AC motors. The invention provides an efficient and energy-saving alternative with a simple possibility of substitution. Each power range, whether with or without additionally required electronics, with partial electronics or full electronics, can be covered by the blower according to the invention. Possible different gradations of the electronic modules can be adapted to the different air outputs of the fan.
Weitere vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen und der nachfolgenden Beschreibung enthalten. Anhand eines in den beiliegenden Zeichnungsfiguren dargestellten Ausführungsbeispiels wird die Erfindung näher erläutert. Es zeigen:
- Fig. 1
- eine perspektivische Seitenansicht einer Ausführung eines erfindungs- gemäßen Radialgebläses,
- Fig. 2
- einen perspektivischen Längsschnitt durch das in
Fig. 1 dargestellte er- findungsgemäße Radialgebläse, - Fig. 3
- einen Längsschnitt durch einen Stator des erfindungsgemäßen Radial- gebläses,
- Fig. 4 bis 6
- jeweils in perspektivischer Darstellung verschiedene Montagezustände des erfindungsgemäßen Radialgebläses,
- Fig. 7
- einen perspektivisch dargestellten Schnitt durch das erfindungsgemäße Radialgebläse quer zu seiner Längsachse,
- Fig. 8
- eine perspektivische Darstellung des erfindungsgemäßen Radial- gebläses in einer Ansicht von oben mit einem abgenommenen Klem- menkasten.
- Fig. 1
- 3 a perspective side view of an embodiment of a radial fan according to the invention,
- Fig. 2
- a perspective longitudinal section through the in
Fig. 1 illustrated inventive radial blower, - Fig. 3
- a longitudinal section through a stator of the radial blower according to the invention,
- 4 to 6
- each perspective view of various mounting states of the radial fan according to the invention,
- Fig. 7
- a perspective section through the inventive radial fan transverse to its longitudinal axis,
- Fig. 8
- a perspective view of the radial blower according to the invention in a view from above with a removed terminal box.
In den verschiedenen Figuren der Zeichnung sind dieselben Teile auch stets mit denselben Bezugszeichen versehen, so dass sie in der Regel auch jeweils nur einmal beschrieben werden.In the various figures of the drawing, the same parts are always provided with the same reference numerals, so that they are usually described only once in each case.
Wie zunächst aus
Das erfindungsgemäße Gebläse besteht dabei aus einer Gehäusebaugruppe und einer Lüfterbaugruppe, wobei Letztere einen Elektromotor 3 und ein Lüfterrad 4 umfasst. Die Erfindung ist insbesondere für eine Ausführung geeignet, bei der wie in der gezeigten Darstellung der Elektromotor 3 als Außenläufermotor ausgebildet ist.The blower according to the invention consists of a housing assembly and a fan assembly, the latter comprising an
Die Gehäusebaugruppe umfasst mindestens ein Halteteil 5, im dargestellten Fall zwei Halteteile 5, die jeweils im Bereich der axialen Lufteintrittsöffnung 1 angeordnet sind und zur lagernden Aufnahme eines Tragteils 6 der Lüfterbaugruppe dienen.The housing assembly comprises at least one holding
Das Tragteil 6 ist, wie
Die Gehäusebaugruppe umfasst des Weiteren zwei lösbar miteinander verbindbare, die Lufteintrittsöffnung 1 teilende Schalenteile 71, 72, ein oberes Halbschalenteil 71 und ein unteres Halbschalenteil 72, zwischen denen das Halteteil 5 im Montagezustand gehalten ist. Die Trennstelle zwischen den Schalenteilen 71, 72 liegt dabei in einer Ebene, die etwa mittig zur Ausblasöffnung 2 und zur Achslage des Motors 3 verläuft. Die Schalenteile 71, 72 bestehen in bevorzugter Weise aus Kunststoff, so dass die einzelnen Bestandteile der Gehäusebaugruppe vorteilhafterweise im Spritzgussverfahren hergestellt werden können.The housing assembly further comprises two releasably interconnectable, the
Die Schalenteile 71, 72 sind in der gezeigten Ausführung über Klammern 8 miteinander verbindbar. Um das obere und das untere Schalenteil 71, 72 zusammenzuhalten, sind insgesamt vier Klammern 8 angebracht, von denen zwei in der Darstellung gemäß
Die Halteteile 5 weisen insbesondere in ihrer Grundgestalt kreisringförmige, verstrebte Rahmen 9 auf. Die Verstrebung ist dabei durch drei sternförmig miteinander verbundene Tragarme 10 gebildet. Die Tragarme 10 verlaufen jeweils von der Mitte des Halteteils 5 bogenförmig nach außen und sind dort mit dem Rahmen 9 verbunden. Der Raum zwischen Streben und Rahmen 9 des Halteteils 5 bildet jeweils die axiale Lufteinlassöffnung 1.The holding
Wie
Die jeweils nicht am Stator 30 angeschlossenen Enden der Anschlussleitungen 12 können durch einen mit Vorteil als Kabelkanal ausgeführten Tragarm 10a geführt sein und enden in einem Klemmenkasten 13, in dem sich beispielsweise Sicherungen und ähnliche Bauelemente sowie eine Anschlussklemmleiste zum steckbaren Verbinden eines nicht dargestellten äußeren Motoranschlusskabels befinden.The respective ends of the connection lines 12 which are not connected to the
Der Klemmenkasten 13, der in
Erfindungsgemäß ist vorgesehen, dass der Elektromotor 3 der Lüfterbaugruppe ein elektronisch kommutierter Gleichstrommotor ist. Durch die geringe Masse eines solchen EC-Motors, mit dem andererseits gegenüber einem bekannten Gebläse eine erhöhte Gebläseleistung erzielbar ist, lässt sich darüber hinaus mit bekannten Mitteln auch ein sehr gutes Entkoppelungsergebnis erreichen, was die Reduzierung von Körperschall und Lagergeräuschen angeht.According to the invention, it is provided that the
Zur Schwingungsentkopplung sind auf die beiden Enden der Tragachse - wie
Insbesondere zeigt diesbezüglich die Darstellung in
Die Verkapselung des Stators 30 gestattet es, ohne Einbuße an der Qualität des Schutzgrades auch bei den kritischeren Klimaanwendungen den umlaufenden Rotor 40 beidseitig an seinen Stirnseiten mit Öffnungen 18 zu versehen, wie dies
Der erfindungsgemäße Einsatz eines EC-Motors impliziert, wie erwähnt, die Notwendigkeit des Vorhandenseins einer speziellen Elektronik zur elektronischen Kommutierung, So kann der Motor 3 in bevorzugter Weise sensorlos gesteuert sein, wobei die Stellung des Rotors 40 durch eine in den Statorwicklungen 17 des Stators 30 induzierte Gegenspannung detektiert wird. Exemplarisch sind in
Wie bereits ausgeführt und in der dargestellten Ausführung gezeigt, kann die Steuerelektronik 19 mit Vorteil vom Motor 3 getrennt in der Gehäusebaugruppe angeordnet sein. Damit wird eine bei bekannten EC-Motoren vorhandene Versperrung der Luftansaugung vermieden.As already stated and shown in the illustrated embodiment, the
Insbesondere kann die Steuerelektronik 19 dabei in dem Klemmenkasten 13 angeordnet sein, der dadurch gleichzeitig vorteilhafterweise die Funktion eines Elektronikgehäuses übernimmt. Ein separates Elektronikgehäuse kann dadurch entfallen.In particular, the
Die Steuerelektronik 19 kann bevorzugt ein als Ganzes montierbares Elektronikmodul bilden, welches in eine Aussparung oder an einen dafür vorgesehenen Montageplatz des Klemmenkastens 13 einsetzbar, insbesondere einsteckbar, ist. Hierbei kann zur Kühlung der Elektronik 19 ein Kühlkörper 20 vorgesehen sein, der in eine Aussparung 21 in der Gehäuseschale 72 aus dem Klemmenkasten 13 in den durch die Gehäuseschalen 71, 72 gebildeten Raum einragt und der so in unmittelbarem Kontakt mit dem Luftstrom im Inneren des Gebläses steht. Durch die Beaufschlagung mit der Gebläseluft erfolgt eine optimale Umströmung des Kühlkörpers 20.The
Hierbei ist es im Sinne einer Minimierung der Strömungsverluste der Luft von besonderem Vorteil, wenn der Kühlkörper 20, wie dies insbesondere
Die Herstellung bzw. Montage des erfindungsgemäßen Gebläses ist einfach, wobei durch einen modularen Aufbau, bei dem die einzelnen Grundelemente durch einfaches Zusammenstecken und Verclipsen bzw. Verschrauben montiert werden können, eine kurze Montagezeit und auch eine optimale Adaptionsmöglichkeit an unterschiedliche Anwenderschnittstellen erzielt werden können.The production or assembly of the blower according to the invention is simple, with a modular design in which the individual basic elements can be mounted by simply plugging and clipping or screwing, a short assembly time and optimal adaptation to different user interfaces can be achieved.
Zur Fertigung des erfindungsgemäßen Gebläses erfolgt zunächst die Herstellung des Stators 30 bzw. einer Statorbaugruppe (einschließlich des Tragteils 6), wie diese in
Nun wird, wie
Vorgefertigte Lüftereinheit bedeutet dabei, dass diese sowohl das Lüfterrad 4 mit seinen Lüfterschaufeln 25, als auch den Rotor 40 des Motors 3 umfasst. Das Lüfterrad 4 mit den Lüfterschaufeln 25 und der Rotor 40 bilden ein einstückiges Bauteil. Der Rotor 40 kann dabei - siehe
Die Kunststoffumhüllung 28 geht in der dargestellten Ausführung der Erfindung Ober einen rechtwinklig zur Motorachse, insbesondere mittig angeordneten scheibenförmigen Bereich 29 in die Lüfterschaufeln 25 über. Durch diese Umhüllung 28 des metallischen Rückschlussringes 26 mit den Magnetsegmenten 27 einerseits sowie durch das materialeinheitlich mit der Kunststoffumhüllung 28 ausgebildete Lüfterrad 4 weist die vormontierte Lüftereinheit eine vorteilhaft kompakte Bauweise auf. Die Einheit erfüllt die elektrotechnische Funktion des Rotors 40 und ist zugleich als Lüfterflügelanordnung zur Erfüllung der strömungstechnischen Aufgaben ausgebildet Dabei beschränkt sich der Materialeinsatz von Metall auf den Rückschlussring 26, so dass gegenüber herkömmlichen Lüfterbaugruppen auch eine Gewichtsreduzierung erzielt werden kann. Eine Oberflächenbehandlung des Rotorkörpers im Sinne eines Korrosionsschutzes kann wegen der vollständigen Kunststoffumspritzung 28 vorteilhafterweise entfallen. Auch kann ein Ladungsabfluss bei elektrostatisch aufgeladenem Rückschlussring 26 durch Fremdströme beispielsweise über eine Rotorwelle (die als solche im erfindungsgemäßen Gebläse nicht vorhanden ist) oder über die Wellenlager 60, die zentral in den stimseitigen Flanschen 22 sitzen, welche also Lagerflansche des Motors 3 bilden, nicht auftreten, da der Rotor 40 durch den Kunststoff vollständig isoliert istThe
Nachdem der Motor 3 im Innenraum des Lüftereinheit gemäß
Abschließend erfolgt die Montage des Klemmenkastens 13 bzw. des Elektronikgehäuses an dem unteren Schalenteil 72. Hierbei wird der Kühlkörper 20 in die Aussparung 21 des Schalenteils 72 eingefügt, so dass er beim Lauf des Gebläses vom Luftstrom überstrichen und damit gekühlt werden kann.In this case, the
Zusammenfassend lassen sich folgende wichtige Vorteile konstatieren, die ein erfindungsgemäßes Gebläse auszeichnen:
- vergleichsweise geringes Masse-Leistungs-Verhältnis bei optimalem Materialeinsatz, geringer Baugröße und hohem Motorwirkungsgrad,
- Reduktion der Anzahl von Bauteilevarianten durch modulare, an verschiedene Leistungsstufen anpassbare Baukastenbauweise, insbesondere von Motor, Gehäuse und Elektronik,
- einfache Montage und an unterschiedliche Kundenschnittstellen adaptierbare, steckfertige Funktions-Module,
- hoher IP-Schutz,
- optimales Wärmemanagement bei hoher zulässiger Motorbetriebstemperatur.
- comparatively low mass-to-power ratio with optimal material usage, small size and high motor efficiency,
- Reduction in the number of component variants through modular design, which can be adapted to different power levels, in particular of motor, housing and electronics,
- simple assembly and plug-in function modules that can be adapted to different customer interfaces,
- high IP protection,
- optimal heat management at a high permissible engine operating temperature.
Die vorliegende Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt, sondern umfasst alle im Sinne der Erfindung gleichwirkenden Mittel und Maßnahmen, z. B. auch ein einflutiges Gebläse. So kann beispielsweise die Bauart des Stators 30 oder Rotors 40 des erfindungsgemäßen Gebläses eine andere sein als vorstehend dargestellt, ohne dass der Rahmen der Erfindung verlassen wird, wobei jedoch dem beschriebenen Elektromotor 3 und seiner Verwendung ebenfalls eigenständige erfinderische Bedeutung beigemessen wird.The present invention is not limited to the illustrated embodiment, but includes all the same in terms of the invention means and measures, for. B. also a single-flow fan. For example, the design of the
Ferner ist die Erfindung nicht auf die im Anspruch 1 definierte Merkmalskombination beschränkt, sondern kann auch durch jede beliebige andere Kombination von bestimmten Merkmalen aller insgesamt offenbarten Einzelmerkmale definiert sein. Dies bedeutet, dass grundsätzlich praktisch jedes Einzelmerkmal des unabhängigen Anspruchs weggelassen bzw. durch mindestens ein an anderer Stelle der Anmeldung offenbartes Einzelmerkmal ersetzt werden kann. Insofern ist die Anspruchsfassung lediglich als ein erster Formulierungsversuch für eine Erfindung zu verstehen.Furthermore, the invention is not limited to the feature combination defined in
- 11
- LufteintrittsöffnungAir inlet opening
- 22
- Luftausblasöffnungair blow
- 33
- Elektromotorelectric motor
- 3030
- Stator von 3Stator of 3
- 44
- Lüfterradfan
- 4040
- Rotor von 3Rotor of 3
- 55
- Halteteilholding part
- 66
- Tragteil (Achse)Supporting part (axle)
- 7070
- Trägerelement für 6 mit 14Carrier element for 6 with 14
- 7171
- oberes SchalenteilUpper shell part
- 7272
- unteres Schalenteillower shell part
- 88th
- Klammer für 71, 72Clamp for 71, 72
- 99
- Rahmen von 5Frame of 5
- 1010
- Tragarm von 5Support arm of 5
- 10a10a
- Tragarm von 5 mit KabelkanalSupport arm of 5 with cable channel
- 1111
- Führungskanal in 6Guide channel in 6
- 1212
- Anschlussleitungconnecting cable
- 1313
- Klemmenkastenterminal box
- 1414
- Elastikelementelastic member
- 1515
- Umgussmaterial von 30Umgussmaterial of 30
- 1616
- Statorblechpaket von 30Stator laminated core of 30
- 1717
- Wicklungen von 30Windings of 30
- 1818
- Öffnungen in 40 (22)Openings in 40 (22)
- 1919
- Steuerelektronik (Bauteile)Control electronics (components)
- 2020
- Kühlkörperheatsink
- 2121
- Aussparung in 71Recess in 71
- 2222
- Flansch von 40Flange of 40
- 2323
- Schraubescrew
- 2424
- Bohrung in 22Bore in 22
- 2525
- Lüfterschaufel von 4Fan blade of 4
- 2626
- Rückschlussring von 40Return ring of 40
- 2727
- Magnetsegment von 40Magnet segment of 40
- 2828
- Kunststoffumhüllung um 40Plastic wrap around 40
- 2929
- scheibenförmiger Bereich von 4disc-shaped area of 4
- KTKT
- speziell zu kühlendes Teil von 19specially to be cooled part of 19
Claims (19)
dadurch gekennzeichnet, dass der Elektromotor (3) der Lüfterbaugruppe ein elektronisch kommutierter Gleichstrommotor ist.Radial fan, having at least one axial air inlet opening (1) and a radial air outlet opening (2), consisting of a housing assembly and a fan assembly comprising an electric motor (3) and a fan wheel (4), wherein the housing assembly at least one holding part (5), which is arranged in the region of the axial air inlet opening (1) and serves to support a supporting part (6) of the fan assembly, and two detachably interconnectable, the air inlet opening (1) dividing shell parts (71, 72), between which the holding part (5 ) is mounted in the assembled state,
characterized in that the electric motor (3) of the fan assembly is an electronically commutated DC motor.
dadurch gekennzeichnet, dass der Elektromotor (3) sensorgesteuert ist, wobei die Stellung des Rotors (40) durch mindestens einen magnetischen, elektrischen oder optischen Lagesensor, z. B. einen Hall-Sensor, eine Feldplatte oder ein Potentiometer, detektiert wird.Blower according to claim 1,
characterized in that the electric motor (3) is sensor-controlled, wherein the position of the rotor (40) by at least one magnetic, electrical or optical position sensor, for. B. a Hall sensor, a field plate or a potentiometer is detected.
dadurch gekennzeichnet, dass der Elektromotor (3) sensorlos gesteuert ist, wobei die Stellung des Rotors (40) durch eine in Wicklungen (17) des Stators (30) induzierte Gegenspannung detektiert wird.Blower according to claim 1,
characterized in that the electric motor (3) is sensorless controlled, wherein the position of the rotor (40) by a in windings (17) of the stator (30) induced counter-voltage is detected.
dadurch gekennzeichnet, dass eine Steuerelektronik (19) vom Elektromotor (3) getrennt in der Gehäusebaugruppe angeordnet ist.Blower according to one of claims 1 to 3,
characterized in that an electronic control unit (19) from the electric motor (3) is arranged separately in the housing assembly.
dadurch gekennzeichnet, dass eine/die Steuerelektronik (19) in einem Klemmenkasten (13) zur Aufnahme von Motoranschlüssen (12) angeordnet ist, der insbesondere an der Unterseite eines unteren Schalenteils (72) der Gehäusebaugruppe befestigt ist.Blower according to one of claims 1 to 4,
characterized in that one / the control electronics (19) in a terminal box (13) for receiving motor terminals (12) is arranged, which is fastened in particular on the underside of a lower shell part (72) of the housing assembly.
dadurch gekennzeichnet, dass die Steuerelektronik (19) ein Elektronikmodul bildet, welches in eine Aussparung oder an einen Montageplatz des Klemmenkastens (13) einsetzbar, insbesondere einsteckbar, ist, wobei ein Kühlkörper (20) des Elektronikmoduls in eine Aussparung (21) in der Gehäuseschale (72) einragt und so in unmittelbarem Kontakt mit dem Luftstrom im Inneren des Gebläses stehtBlower according to claim 5,
characterized in that the control electronics (19) forms an electronic module, which in a recess or to a mounting position of the terminal box (13) used, in particular insertable, wherein a heat sink (20) of the electronic module in a recess (21) in the housing shell Protrudes (72) and thus is in direct contact with the air flow inside the fan
dadurch gekennzeichnet, dass der Kühlkörper (20) eine Form aufweist, die der Gehäusewandung angepasst, also beispielsweise bogenförmig gekrümmt, ist.Blower according to claim 6,
characterized in that the cooling body (20) has a shape which is adapted to the housing wall, that is curved, for example, arcuate.
dadurch gekennzeichnet, dass der Kühlkörper (20) die Aussparung (21) in der Gehäuseschale (72) verschließt, insbesondere dichtend, ggf. bei Anwesenheit einer zusätzlichen Dichtung, verschließt.Blower according to claim 6 or 7,
characterized in that the cooling body (20) closes the recess (21) in the housing shell (72), in particular sealingly, possibly in the presence of an additional seal closes.
dadurch gekennzeichnet, dass der Kühlkörper (20) eine gewinkelte, beispielsweise V-förmige, Grundgestalt aufweist, wobei ein Schenkel des Winkels in Kontakt mit dem Luftstrom im Inneren des Gebläses steht, während der andere Schenkel sich vollständig im Inneren des Klemmenkastens (13) erstreckt.Blower according to one of claims 6 to 8,
characterized in that the heat sink (20) has an angled, for example V-shaped, basic shape, wherein one leg of the angle is in contact with the air flow inside the fan, while the other leg extends completely inside the terminal box (13) ,
dadurch gekennzeichnet, dass in der Gehäusebaugruppe zwei sich axial gegenüberliegende Lufteintrittsöffnungen (1) ausgebildet sind.Blower according to one of claims 1 to 9,
characterized in that two axially opposite air inlet openings (1) are formed in the housing assembly.
dadurch gekennzeichnet, dass das Tragteil (6) als eine längliche, mit ihren Enden in den Halteteilen (5) gehalterte Tragachse ausgebildet ist, auf der einerseits der Stator (30) des Elektromotors (3) verdrehfest sitzt und auf der andererseits der Rotor (40) als Außenläufer drehbar gelagert ist.Blower according to one of claims 1 to 10,
characterized in that the supporting part (6) is formed as an elongate, with their ends in the holding parts (5) supported axle, on the one hand, the stator (30) of the electric motor (3) sits rotationally and on the other hand, the rotor (40 ) is rotatably mounted as an external rotor.
dadurch gekennzeichnet, dass das Tragteil (6), zumindest teilweise, von einem Achsende ausgehend, als Hohlachse ausgeführt ist, wobei das Tragteil (6) einen inneren Führungskanal (11) zur Aufnahme von Anschlussleitungen (12) für den Elektromotor (3) aufweist.Blower according to one of claims 1 to 11,
characterized in that the support part (6), at least partially, starting from an axle end, designed as a hollow shaft, wherein the support member (6) has an inner guide channel (11) for receiving connection lines (12) for the electric motor (3).
dadurch gekennzeichnet, dass das Tragteil (6), jeweils über ein Elastikelement (14) mit dem Trägerteil (5) verbunden ist, wobei das Elastikelement (14) vorzugsweise aus drei axial hintereinanderliegenden Abschnitten besteht, und zwar einem verdrehfest mit dem Trägerteil (5) verbundenen Träger-Verbindungs-Abschnitt, einem verdrehfest mit dem Trägerteil verbundenen Motor-Verbindungs-Abschnitt sowie einem zwischen den beiden Verbindungsabschnitten angeordneten elastisch verformbaren Zwischenabschnitt.Blower according to one of claims 1 to 12,
characterized in that the supporting part (6), in each case via an elastic element (14), is connected to the carrier part (5), the elastic element (14) preferably consisting of three axially successive sections, namely a rotationally fixed manner to the carrier part (5). connected carrier-connection portion, a rotationally fixed to the support member connected to the motor-connecting portion and an arranged between the two connecting portions elastically deformable intermediate portion.
dadurch gekennzeichnet, dass der Stator (30) des Elektromotors (3) gekapselt, vorzugsweise komplett von einem Umgussmaterial (15) für das Statorblechpaket (16), die Wicklungen (17) sowie für weitere vorhandene Bauteile, wie die elektrischen Anschlussleitungen (12), umgeben ist.Blower according to one of claims 1 to 13,
characterized in that the stator (30) of the electric motor (3) encapsulated, preferably completely of a Umgussmaterial (15) for the stator lamination (16), the windings (17) and for other existing components, such as the electrical connection lines (12), is surrounded.
dadurch gekennzeichnet, dass der Rotor (40) des Elektromotors (3), vorzugsweise in Flanschen (22), die an seinen beiden Stirnseiten befestigt sind, Öffnungen (18) aufweist.Blower according to one of claims 1 to 14,
characterized in that the rotor (40) of the electric motor (3), preferably in flanges (22) which are attached to its two end faces, openings (18).
dadurch gekennzeichnet, dass der Rotor (40) mit dem Lüfterrad (4) eine vorgefertigte Lüftereinheit bildet, wobei vorzugsweise das Lüfterrad (4) mit seinen Lüfterschaufeln (25) und der Rotor (40) ein einstückiges Bauteil bilden.Blower according to one of claims 1 to 15,
characterized in that the rotor (40) with the fan wheel (4) forms a prefabricated fan unit, wherein preferably the fan wheel (4) with its fan blades (25) and the rotor (40) form a one-piece component.
dadurch gekennzeichnet, dass der Rotor (40) aus einem Rückschlussring (26) gebildet ist, an dem innenseitig Magnetsegmente (27) befestigt sind und der außenseitig, insbesondere rohrförmig, von einer Kunststoffumhüllung (28) umgeben ist.Blower according to claim 16,
characterized in that the rotor (40) of a return ring (26) is formed on the inside magnetic segments (27) are attached and the outside, in particular tubular, surrounded by a plastic sheath (28).
dadurch gekennzeichnet, dass die Kunststoffumhüllung (28) über einen rechtwinklig zur Motorachse, insbesondere mittig angeordneten, scheibenförmigen Bereich (29) in die Lüfterschaufeln (25) übergeht, wobei die Kunststoffumhüllung (28) materialeinheitlich mit dem Lüfterrad (4) ausgebildet ist.Blower according to claim 17,
characterized in that the plastic sheath (28) via a perpendicular to the motor axis, in particular centrally arranged disc-shaped area (29) merges into the fan blades (25), wherein the plastic sheath (28) of the same material with the fan (4) is formed.
gekennzeichnet durch die Merkmale des kennzeichnenden Teils eines der Ansprüche 1 bis 4 und/oder 11 bis 18.Electric motor for a fan assembly of a radial fan according to one of claims 1 to 18,
characterized by the features of the characterizing part of one of claims 1 to 4 and / or 11 to 18.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09004232.6A EP2236838B1 (en) | 2009-03-25 | 2009-03-25 | Radial fan |
ES09004232.6T ES2607841T3 (en) | 2009-03-25 | 2009-03-25 | Radial fan |
CN201010194958.0A CN101865146B (en) | 2009-03-25 | 2010-03-25 | Radial fan |
US12/731,437 US9109610B2 (en) | 2009-03-25 | 2010-03-25 | Radial blower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09004232.6A EP2236838B1 (en) | 2009-03-25 | 2009-03-25 | Radial fan |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2236838A1 true EP2236838A1 (en) | 2010-10-06 |
EP2236838B1 EP2236838B1 (en) | 2016-09-21 |
Family
ID=40962038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09004232.6A Active EP2236838B1 (en) | 2009-03-25 | 2009-03-25 | Radial fan |
Country Status (4)
Country | Link |
---|---|
US (1) | US9109610B2 (en) |
EP (1) | EP2236838B1 (en) |
CN (1) | CN101865146B (en) |
ES (1) | ES2607841T3 (en) |
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Also Published As
Publication number | Publication date |
---|---|
US20100254826A1 (en) | 2010-10-07 |
ES2607841T3 (en) | 2017-04-04 |
US9109610B2 (en) | 2015-08-18 |
CN101865146A (en) | 2010-10-20 |
EP2236838B1 (en) | 2016-09-21 |
CN101865146B (en) | 2014-12-24 |
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