WO2009033699A1 - Ventilateur à tambour à entraînement direct - Google Patents

Ventilateur à tambour à entraînement direct Download PDF

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Publication number
WO2009033699A1
WO2009033699A1 PCT/EP2008/007506 EP2008007506W WO2009033699A1 WO 2009033699 A1 WO2009033699 A1 WO 2009033699A1 EP 2008007506 W EP2008007506 W EP 2008007506W WO 2009033699 A1 WO2009033699 A1 WO 2009033699A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
fan
stator
permanent magnets
rotor
Prior art date
Application number
PCT/EP2008/007506
Other languages
German (de)
English (en)
Inventor
Gerhard Huth
Matthias Engel
Original Assignee
Gea Air Treatment Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gea Air Treatment Gmbh filed Critical Gea Air Treatment Gmbh
Priority to EP08802066A priority Critical patent/EP2201252A1/fr
Publication of WO2009033699A1 publication Critical patent/WO2009033699A1/fr

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
    • 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
    • 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
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/105—Centrifugal pumps for compressing or evacuating with double suction
    • 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
    • F04D25/0653—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the motor having a plane air gap, e.g. disc-type
    • 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
    • F04D25/066—Linear Motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis

Definitions

  • the present invention relates to a fan in the embodiment of a drum fan with a fan motor, which has a stator and a permanent magnetic rotor, and with a fan drum, the at least a first and a second, in particular each end of the fan drum arranged, drum rim with interposed lamellae or Having blades, the fan drum carries permanent magnets and forms the rotor of the fan motor. Furthermore, the invention relates to a method for producing a drum fan.
  • the subject of the application is the direct drive of the fan drum, the design and structural arrangement of the engine components and the production of the fan unit.
  • drum fans win as decentralized air conditioning units for ventilation and air conditioning of living and offices over central fixed air conditioning systems increasingly important. They are compact small appliances that can be used flexibly, relatively inexpensively and, if necessary, can be replaced quickly and inexpensively without costly repairs.
  • Drum fans serve to transport in particular thermally treated air in a substantially radial direction, so that they are also referred to as radial fan. They are driven by an electric motor, wherein the fan unit is a separate unit, which is mechanically connected to the rotating component of the electric motor. Drum fans frequently have speed-variable drives for demand-driven fan power adjustment, by means of which the speed of the motor and thus of the fan can be adjusted stepwise or continuously. It is known to drive drum fans with asynchronous motors or EC motors. In versions with a single-phase asynchronous motor with capacitor auxiliary line, the speed of the drum fan is usually set stepwise via winding taps. For continuous speed adjustment with higher energy efficiency, EC motors are increasingly being used, which are fed by a motor-controlled converter.
  • the fan motor is usually designed as an external rotor motor and mounted inside the fan drum such that the fan drum is mechanically rigidly connected to the external rotor.
  • the fan drum is designed substantially cylindrical and has lamellas, at both ends of which a drum rim is provided on both sides, which connects the lamellae in a ring arrangement with each other. Another in the axial direction approximately centrally arranged drum rim serves as a mechanical coupling element, via which the fan drum is connected to the external rotor.
  • the drum fan also has an inner stator which is rotatably connected via a fixed shaft or a flange to the housing of the fan assembly.
  • a drum fan with a fan motor having a stator and a permanent magnetic rotor, and with a fan drum having at least a first and a second, in particular each end of the fan drum arranged drum rim with interposed lamellae or blades, wherein the fan drum Permanent magnets carries and forms the rotor of the fan motor and the stator is a double coil stator, which engages around the permanent magnets.
  • the basic idea of the invention is to functionally integrate the fan motor into the fan unit in such a way that a mechatronic system is present, the fan drum being directly driven thereby.
  • a direct drive of the fan drum results in a mechanically rigid and compact fan unit.
  • the motor function is realized by a stator module and a magnetic module, which can be made in a simple form compact and inexpensive and easy to install.
  • the active part of a conventional rotor ie the arrangement of the responsible for the formation of torque permanent magnets, thereby forming a structural part of the fan drum.
  • the permanent magnets are inventively arranged on the fan drum or integrated in the same, that the fan drum itself the rotor of the drum fan forms, which forms the magnetic module in such equipment.
  • the rotating mass of the fan unit is reduced, so that a lower noise emission is achieved.
  • the compact design of the drum fan therefore leads to a quiet and vibration-resistant operation.
  • the stator carries the rotating field winding system. He is preferably part of the housing construction, in particular rotatably connected thereto.
  • the permanent magnets may be formed by rare earth magnets.
  • the stator is designed as a double coil stator in the manner of a linear motor, as is known from German patent application 10 2006 022 773.5.
  • Such engine concepts are "ironless" concepts and therefore have a lower active part weight. They have a higher torque density, so that they require a lower power consumption for the application of the same driving force compared to conventional motor systems, and therefore also have a higher efficiency than previously used asynchronous concepts.
  • cogging torques due to electromagnetic edge effects are avoided. This considerably reduces the electromechanically induced noise emission of the drum fan.
  • the double coil stator is designed such that it encompasses the permanent magnets.
  • the permanent magnets can be made relatively thick in this embodiment with respect to their length and width. Furthermore, the permanent magnets may be arranged such that their north-south poles are respectively directed opposite to each other tangentially, i. the magnetization of which runs tangentially so that the north poles of two adjacent permanent magnets and the south poles of two adjacent permanent magnets alternately point towards one another in the circumferential direction.
  • the fan drum may be formed cylindrically with lamellae or vanes, the longitudinal axes of which extend parallel to the rotor axis, the longitudinal axis being understood to be the extension of the lamellae or vanes in the direction of the rotational symmetry axis of the cylindrical rotor drum.
  • the lamellae can also be arranged rotated relative to the rotor axis in the axial direction from one axial end to the other end by a small angle.
  • the angle by which the lamella backs of the slats opposite the tangent to the cylindrical cross section of Fan drum is tilted can be unchangeable or manually or electromechanically adjusted.
  • the air flow generated by the rotating fan drum can be additionally adjusted in its amount. In the case of the blades, these are curved in the radial direction outwards.
  • the fan drum may have fins or blades whose longitudinal axes are tilted outwards at an angle relative to the rotor axis, so that the fins or blades increasingly extend outward in the direction of the rotor axis.
  • the fan drum is replaced by a conical shape, so that the drum fan according to the invention can be used as a diagonal fan.
  • the permanent magnets can be arranged on or in the fan drum, wherein they can either be arranged on the surface of the fan drum, in particular adhesively bonded or enclosed by suitable structures on the fan drum, such as recesses or latching hooks, or integrated into the fan drum, in particular be spilled or spilled with her. In the latter case, the permanent magnets can at least partially eino in the fan drum.
  • the fan drum is produced by an injection process in which the permanent magnets are molded or molded onto the fan drum.
  • the fan drum can be made of stainless, in particular non-magnetic steel, or plastic.
  • the permanent magnets can be circumferentially applied to the fan drum or integrated into it to form a magnetic track.
  • the inner circumference of the fan drum of the stator is disposed within the fan drum. It thus forms an inner stator with externally circulating fan rotor rotor.
  • the magnetic track on the outer circumference of the fan drum of the stator is arranged outside of the fan drum. It thus forms an external stator with within the same rotating fan drum rotor. Due to the use of permanent magnets and the compact realization of the stator modules, the energy efficiency is comparatively high.
  • the permanent magnets can be applied or integrated at least on or in some lamellae or blades or on or in at least one of the drum rings. Preferably, the permanent magnets are arranged circumferentially at the axial end of the fan drum or in the region of its axial center.
  • the stator may also be designed such that it extends over only a part of the axial length of the fan drum. This ensures that a high air transport volume is achieved because that part of the axial length of the fan drum into which the stator does not extend virtually forms a hollow cylinder, as a result of which the air displaced by the rotating blades or vanes can flow back unhindered.
  • the stator may preferably be arranged on the front side or approximately in the middle of the axial length of the fan drum,
  • the stator may be segmented, i. be composed of several identical segment sections, whereby the production is simplified, especially for large drum fans. Due to the segmented design, it is also possible that the stator extends only over part of the fan drum circumference.
  • the stator may be formed by two or more segments which are spaced from each other symmetrically along the fan drum periphery.
  • Figure 1 conventional drum fan in radial arrangement with full stator and external rotor
  • FIG. 3 cross-section of the drum fan according to FIG. 2
  • FIG. 4 Drum fan in tangential arrangement with double coil stator in the axial center of the fan drum
  • FIG. 5 magnetization of the permanent magnets in the case of a tangential arrangement
  • FIG. 6 Tangential arrangement according to FIG. 4 with a round cross-section of FIG
  • FIG. 7 Tangential arrangement according to FIG. 4 with rectangular cross section of FIG
  • Figure 8 fan drum of a diagonal fan with magnetic ring and double coil
  • Figure 9 axial section of the diagonal fan of Figure 8 with two double coils
  • FIG. 1 shows a known drum fan 1 in external rotor construction.
  • the stator 2 is designed as an inner stator, around which the outer circumference of the fan drum 3 rotates.
  • the stator 2 covers the entire inner circumference of the fan drum 3.
  • This has at its axial ends in each case an annular drum rim 4, on which the lamellae 5 arranged parallel to the axis of rotation are integrally formed, so that they extend between the drum rings 4.
  • Drum rings 4 and 5 slats form a cage in shape.
  • the slats 5 have a remote from the fan drum 3 fin back 6, which lies in a plane which is tilted compared to a tangential plane to the cylindrical fan drum 3 by an angle of approximately 30 °.
  • the permanent magnets 8 are relatively thin in radial construction compared to their width in the circumferential direction and their length in the axial direction and arranged in the form of a magnetic track on the inside of the fan drum 3 circumferentially at its axial beginning, in particular on its front drum rim 4. Consequently, the stator 2 extends only partially into the fan drum 3 in accordance with the length of the permanent magnets 8. These are radially and magnetized in accordance with the Grundpolproschreib p of the stator 2 in a known manner.
  • the motor drive unit according to the invention as a linear motor according to the German patent application DE 10 2006 022 773.5 designed such that the stator of a double coil stator 9, also called Doppelspulenaktor formed.
  • the permanent magnets 8 are arranged such that their north south poles each are oppositely directed tangentially to each other, ie their magnetization is tangential, so that alternately in the circumferential direction in each case the north poles of two adjacent permanent magnets 8 and the south poles of two adjacent permanent magnets 8 point to each other.
  • Such an arrangement of the permanent magnets 8 with tangential field guidance is shown in Fig. 5 in unwound from the lateral surface of the fan drum 3 form.
  • the stator 9 has in the embodiment according to Fig. 2, 3 and 4, a U-shaped cross-sectional profile, so that the stator 9, the permanent magnets 8 engages around so that they lie between the two profile legs. The stator 9 is thus arranged at the end face of the fan drum 3 of FIG.
  • the stator 2 is designed in segmental construction, wherein a plurality of segments can form the stator 2, which extends over the entire circumference of the fan drum 3. According to FIG. 4, the stator 2 can also extend over only part of the circumference, here the outer circumference.
  • the drum fan 1 may have an inner stator 2 and a fan drum 3 rotating outside thereof.
  • the magnetic track formed from thick permanent magnets 8 is arranged annularly in this case on the inner circumference of the fan drum 3.
  • the permanent magnets 8 can also be at an axial end of the fan drum 3 or as in 4 to the outer stator shown to be circumferentially arranged in the axial center of the fan drum 3.
  • a corresponding third drum rim 4 can be provided, via which the slats 5 are connected to one another.
  • the fixedly connected to the drum fan housing inner stator may also be formed as a full stator or segment stator, wherein in the case of a segmented Statorbauweise the stator 2 may extend only over part of the circumference, in particular of the inner circumference.
  • FIG. 2 shows a stator with a circumferential extent of approximately 180 °, shown in FIG. 4 with a circumferential extent of approximately 90 °.
  • the circumferential length of a stator segment can also be chosen differently.
  • the stator 9 has at least two winding coils, which are each arranged in such a length and at a distance in the circumferential direction, one behind the other, that the distances between adjacent permanent magnets 8 can each be bridged, whereby due to the magnetic fields generated by the winding coils in each case Cooperation with the permanent magnet 8 sufficient tensile and compressive forces are generated.
  • the winding coils are energized and reversed in such a way that in each case a permanent magnet 8 is pulled in the direction of rotation in a winding coil and after exceeding the dead center, i. when the tensile and compressive forces generated by the winding coil on the permanent magnet 8 cancel each other, the magnetic field in the other direction, so that the corresponding permanent magnet 8 is again pushed out of the winding coil in the direction of rotation.
  • the winding coils of the stator 9 and the permanent magnets may have a round cross section according to FIG. 6 or a rectangular cross section according to FIG. 7, the stator 9 being open towards the fan drum 3 or to the drum rim 4 carrying the permanent magnets 8.
  • the stator 9 may be formed as a segment stator. This may extend by assembling a plurality of stator segments over the entire circumference or only over part of the circumference of the fan drum 3.
  • the double coil stator 9 is completely ironless, so that cogging moments due to magnetic edge effects are largely avoided. It can be made particularly compact in that the arrangement of the double coils is provided with a Kunststoffumspritzung.
  • the arranged on the fan drum 3 permanent magnets 8 can be compact encapsulated or sprayed as a unit of plastic.
  • the fan drum 3 is made of an amagnetic material, in particular metal or plastic, so that the arrangement consisting of fan drum 3 and permanent magnet 8 in one operation, for example in a plastic injection process, can be produced.
  • Figures 8 and 9 show a variant of the inventive drum fan 1 with a conical fan drum 3.
  • blades 5a are arranged, whose longitudinal axes are tilted relative to the rotor axis by an angle of about 30 °.
  • the wings 5a extend in the axial direction from the view of the front drum ring 4 increase outward.
  • the front drum ring 4 is disc-shaped and forms a flange on which a magnetic ring 8 'is centrally located.
  • the magnetic ring 8 ' is formed by an annular support 8 ", on the front side along its entire circumference a plurality of permanent magnets 8 is arranged, wherein the permanent magnets 8 are magnetized in the circumferential direction such that their north south poles are directed opposite each other tangentially to each other
  • An annular arrangement of the permanent magnets 8 is encompassed by a double coil stator 9 with a multiplicity of double coils 8.
  • a double coil is shown, whereas FIG. 9 shows two diametrically opposite double coils 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

La présente invention concerne un ventilateur à tambour (1) comprenant, d'une part un moteur constitué d'un stator (2) et d'un induit à aimantation permanente, et d'autre part un tambour de ventilation (3) présentant, à ses extrémités, une première et une seconde couronne (4) entre lesquelles sont montées des lamelles (5) ou des ailettes (5a). Le tambour de ventilation (3) porte des aimants permanents (8) et constitue l'induit du moteur du ventilateur. Le stator (2) est un stator à bobine double (9) et enveloppe les aimants permanents (8).
PCT/EP2008/007506 2007-09-15 2008-09-12 Ventilateur à tambour à entraînement direct WO2009033699A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08802066A EP2201252A1 (fr) 2007-09-15 2008-09-12 Ventilateur à tambour à entraînement direct

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007044176.4 2007-09-15
DE102007044176A DE102007044176A1 (de) 2007-09-15 2007-09-15 Trommellüfter mit Direktantrieb

Publications (1)

Publication Number Publication Date
WO2009033699A1 true WO2009033699A1 (fr) 2009-03-19

Family

ID=40243769

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/007506 WO2009033699A1 (fr) 2007-09-15 2008-09-12 Ventilateur à tambour à entraînement direct

Country Status (3)

Country Link
EP (1) EP2201252A1 (fr)
DE (2) DE102007044176A1 (fr)
WO (1) WO2009033699A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200329583A1 (en) * 2020-06-27 2020-10-15 Krishnakumar Varadarajan Fan for an electronic device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007044176A1 (de) 2007-09-15 2009-03-19 Gea Air Treatment Gmbh Trommellüfter mit Direktantrieb
DE102010056090A1 (de) * 2010-12-17 2012-06-21 Lutz Turowsky Arbeitsmaschine, Förderpumpe und Verfahren zum Betreiben derselben
ITFI20130283A1 (it) * 2013-11-22 2015-05-23 Nuovo Pignone Srl "motor-compressor with stage impellers integrated in the motor-rotors"
EP3580462B1 (fr) 2017-02-10 2021-12-22 Sew-Eurodrive GmbH & Co. KG Ensemble de ventilateur à ventilateur et bague dentée et moteur à convertisseur comprenant l'ensemble de ventilateur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1035316A (en) * 1962-07-26 1966-07-06 Matthews & Yates Ltd Improvements in or relating to fan driving arrangements
DE4226843A1 (de) * 1992-08-13 1994-02-17 Bayerische Motoren Werke Ag Zentrifugalgebläse mit einem elektrischen Antriebsmotor, insbesondere für Heiz- und Klimaanlagen in Kraftfahrzeugen
US20040062648A1 (en) * 2002-09-30 2004-04-01 Makinson Ian Douglas Impeller
US20070014675A1 (en) * 2005-07-15 2007-01-18 Nidec Corporation Fan assembly

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE159326T1 (de) * 1994-02-05 1997-11-15 Papst Motoren Gmbh & Co Kg Lüfter mit einem lüfterrad
DE4421855B4 (de) * 1994-06-22 2007-03-08 Acc Germany Gmbh Kompakte Gebläseeinheit für Kraftfahrzeuge
US6923619B2 (en) * 2003-08-05 2005-08-02 Rotys Inc. Integrated blade cooler for electronic components
JP2005171835A (ja) * 2003-12-10 2005-06-30 Fujitsu General Ltd 送風装置
US7173353B2 (en) * 2004-07-07 2007-02-06 Industrial Design Laboratories Inc. Integrated blower for cooling device
DE102006022773A1 (de) 2006-05-16 2007-11-22 Technische Universität Kaiserslautern Linearmotor
DE102007044176A1 (de) 2007-09-15 2009-03-19 Gea Air Treatment Gmbh Trommellüfter mit Direktantrieb

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1035316A (en) * 1962-07-26 1966-07-06 Matthews & Yates Ltd Improvements in or relating to fan driving arrangements
DE4226843A1 (de) * 1992-08-13 1994-02-17 Bayerische Motoren Werke Ag Zentrifugalgebläse mit einem elektrischen Antriebsmotor, insbesondere für Heiz- und Klimaanlagen in Kraftfahrzeugen
US20040062648A1 (en) * 2002-09-30 2004-04-01 Makinson Ian Douglas Impeller
US20070014675A1 (en) * 2005-07-15 2007-01-18 Nidec Corporation Fan assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200329583A1 (en) * 2020-06-27 2020-10-15 Krishnakumar Varadarajan Fan for an electronic device
US11895803B2 (en) * 2020-06-27 2024-02-06 Intel Corporation Fan for an electronic device

Also Published As

Publication number Publication date
EP2201252A1 (fr) 2010-06-30
DE102007044176A1 (de) 2009-03-19
DE102009013019A1 (de) 2010-09-23

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