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EP0888663A2 - Turbomachine destinee notamment a un appareil electromenager - Google Patents

Turbomachine destinee notamment a un appareil electromenager

Info

Publication number
EP0888663A2
EP0888663A2 EP97916405A EP97916405A EP0888663A2 EP 0888663 A2 EP0888663 A2 EP 0888663A2 EP 97916405 A EP97916405 A EP 97916405A EP 97916405 A EP97916405 A EP 97916405A EP 0888663 A2 EP0888663 A2 EP 0888663A2
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
machine according
drive motor
induction
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.)
Ceased
Application number
EP97916405A
Other languages
German (de)
English (en)
Inventor
Dietmar Kern
Jan Dijkstra
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG Hausgeraete GmbH
Original Assignee
AEG Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AEG Hausgeraete GmbH filed Critical AEG Hausgeraete GmbH
Publication of EP0888663A2 publication Critical patent/EP0888663A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Definitions

  • the invention relates to a turbomachine, in particular for a household appliance.
  • a permanent magnet motor In addition to universal motors with commutation through the sliding contacts, electronic, brushless commutated permanent magnet motors are also known.
  • the rotor instead of a rotor winding has permanent magnetic material with two or more magnetic poles.
  • the stator has two or more pole shoes with stator windings. These pole shoes with the stator windings are arranged and are controlled in such a way that an alternating or rotating induction field of the stator is generated and a torque is exerted on the permanent magnet rotor. Since the rotor follows the induction rotating field of the stator synchronously, such a motor is also called a synchronous motor.
  • Brushless direct current permanent magnet motors are known from DE-A-40 21 599, DE-A-39 28 313, DE-A-37 10 658, DE-A-36 22 231 and EP-A-0 682 404. Applications of these motors are not disclosed in these documents.
  • an electronically commutated permanent magnet direct current motor is known with a stator of a shaded-pole motor, in which the short-circuit windings forming the gap pole are omitted, and a two- or multi-pole permanent magnet rotor.
  • this known DC motor is magnetically two-pole and electrically single-phase (single-strand).
  • the rotor has two opposing magnetic poles (north and south poles) in a permanent magnet ring, which is arranged around a cylindrical core made of magnetizable material. The runner is enclosed by a symmetrically constructed stand.
  • the stand has a square cross-section and frame shaped yoke package, in which a pole package with a rotor bore is inserted for the rotor.
  • the pole pack completely encloses the rotor parallel to its axis of rotation in the form of a hollow cylinder and at a constant distance from the rotor.
  • a concentrated induction winding (stator winding) is arranged on two extensions of the pole package.
  • constrictions are provided in the hollow cylindrical pole packet in which the magnetic field saturates even at low winding currents.
  • there is also a running creation sensor which serves for electronic commutation and determination of the direction of rotation.
  • An application of the permanent magnet DC motor is not specified in DE-A-39 15 539.
  • German utility model 90 17 912 U1 describes an electric kitchen machine with an electronically commutated permanent magnet motor, which has a multi-pole disk-shaped rotor and a stator ring with a large number of pole pieces, around which an induction coil is wound , includes.
  • DE-A-39 28 313 discloses a vacuum cleaner with a brushless DC motor as the drive motor.
  • the DC motor is cooled in the intake duct of the vacuum cleaner by the intake air.
  • the object of the invention is to provide a turbomachine which is improved over the prior art and is particularly suitable for a household appliance.
  • the invention is based on the consideration of using an electrically single-phase and magnetically at least two-pole permanent magnet motor as the electric drive motor for a turbomachine for the first time.
  • a stator of this motor has a single-phase induction winding arrangement and, when energizing the induction winding arrangement, generates an induction field (magnetic flux density) which is at least approximately mirror-symmetrical with respect to a main symmetry plane containing the axis of rotation of the rotor.
  • the single-phase induction winding arrangement can contain one or more induction windings, all of which are supplied by a single operating voltage (phase). Due to the symmetry of the induction field, a higher efficiency of the drive motor is achieved than with an asymmetrical field, because a higher proportion of the field energy is converted into kinetic energy of the rotor, and furthermore stray fields are suppressed when the induction field changes over time.
  • the flow machine has a number of advantages over conventional flow machines with universal or induction motors: • Less wear, since there is no mechanical commutation
  • the induction field of the stator is also essentially mirror-symmetrical with respect to an additional symmetry plane that is perpendicular to the main plane of symmetry mentioned.
  • the induction winding arrangement of the stator can in particular comprise a distributed or a concentrated winding.
  • the induction winding arrangement has two concentrated induction windings which are arranged on the stator on opposite sides of the rotor.
  • the stator comprises a pole body made of a magnetizable material (with a relative permeability greater than one) which surrounds the rotor and is essentially mirror-symmetrical to the main plane of symmetry and a yoke in which the pole body is detachably inserted.
  • a particularly advantageous embodiment is distinguished by the fact that the stator has two pole bodies made of magnetizable material that lie opposite one another essentially mirror-symmetrically to the main plane of symmetry, between which the rotor is arranged. Since in this embodiment there is an air gap between the pole bodies and
  • Air has a higher magnetic resistance than the magnetizable material of the pole body, a greater part of the energy of the induction field of the stator is used for uses the movement of the rotor and thus achieves a higher degree of efficiency than in the case of the motor with a closed pole body.
  • the rotor and the magnetic poles of the rotor can be implemented in many different ways.
  • the rotor comprises a base body, preferably made of magnetizable material, and magnetic material that is magnetized in slots in accordance with the desired position and number of magnetic poles
  • the magnetic material in the slots of the rotor can be formed with prefabricated, in particular pressed, sintered or plastic-bonded, magnetic shaped bodies, with magnetic powder or magnetic granules provided with a binder, or else with injection-molded, magnet-containing plastic.
  • covers are provided at the ends of the rotor in both directions of the axis of rotation to prevent foreign bodies from penetrating into the space formed between the rotor and the stator.
  • the turbomachine comprises at least one sensor assigned to the stator, preferably a magnetic field sensor, for generating a measurement signal dependent on the angular position of the rotor and means for energizing the single-phase induction winding arrangement in Dependence on the measurement signal from the sensor.
  • the means preferably energize the induction winding arrangement with a current pulse (current pulse) of a predetermined polarity when the measurement signal of the sensor has accepted a predetermined signal value at least once.
  • the means apply a current pulse of a predetermined polarity to the induction winding arrangement during half a period of the measurement signal and with a current pulse of the opposite polarity during the other half period.
  • the period of the measurement signal is generally determined by the number of poles of the rotor and their angular positions.
  • a further embodiment of the turbomachine is characterized in that the drive motor is designed and arranged in a flow channel of the turbomachine for a flowing medium in such a way that the flowing medium between the inner walls of the flow channel and the outer walls of the stator of the drive motor flows through. As a result, the stator can be cooled with the flowing medium of the flow machine.
  • the drive motor can be designed and arranged in the flow channel such that the outer walls of the stator of the drive motor are flush with the inner walls of the flow channel and the flowing medium flows through the drive motor. This embodiment takes up less space.
  • FIG. 1 shows a permanent magnet motor as a drive motor for a turbomachine in cross section
  • Fig. 9 shows a permanent magnet drive motor for a turbomachine with a concentrated
  • FIG. 10 a permanent magnet drive motor for a turbomachine with a distributed induction winding
  • FIG. 11 a turbomachine with a permanent magnet drive motor and special control means
  • FIGS. 1 to 14 shows a further embodiment of a permanent magnet rotor for a permanent magnet motor in cross section, each in a schematic representation. Corresponding parts are the same in FIGS. 1 to 14
  • FIG. 1 shows a permanent magnet motor as the drive motor 2 of a turbomachine with a stator 3 and a rotor 4 in cross section.
  • the rotor 4 is preferably of hollow cylindrical shape with a diameter d and the cylinder axis as the axis of rotation (axis of rotation) A and is placed on a drive shaft 5 running parallel to the axis of rotation A for driving one or more impellers (not shown) of the turbomachine a main plane of symmetry E.
  • the rotor 4 is arranged within the stator 3, which is essentially symmetrical to the main plane of symmetry E and a yoke 35 and two pole bodies (pole shoes) 7 and 8 connected to the yoke 35.
  • the two pole bodies 7 and 8 are arranged symmetrically to the main plane of symmetry E and enclose the rotor 4 in a claw or crescent shape except for an intermediate space (gap) lying symmetrically to the main plane of symmetry E between the two pole bodies 7 and 8.
  • This intermediate space is part of an inside the Stator 3 formed interior 36, which also the intended for the rotor 4 central opening comprises.
  • the air gap formed between the rotor 4 and the pole bodies 7 and 8 preferably has a constant gap width (symmetrical air gap).
  • the stator 3 can be composed in particular as a laminated core made of one-piece, preferably white stamped, laminated steel sheets of the cross section shown in FIG. 1.
  • Each of the pole bodies 7 and 8 is assigned a concentrated induction winding 31 or 32, for example a copper coil, on a connecting piece running towards the yoke 35.
  • the two induction windings 31 and 32 are connected in series or in parallel between two poles (not shown) of a supply voltage (operating voltage) of control means (single-phase design) and at the same time are coordinated with one another in their sense of development so that they produce a rectified magnetic induction field B.
  • the induction windings 31 and 32 are arranged symmetrically to the main plane of symmetry E and are of identical design.
  • the induction windings 31 and 32 generate an induction field B which is mirror-symmetrical to the main plane of symmetry E (with regard to the strength or the amount of the induction field B).
  • the induction windings 31 and 32 can also be arranged asymmetrically to the main plane of symmetry E, since the pole bodies 7 and 8 guide and symmetrize the induction field B due to their high permeability compared to air.
  • the induction field B and in particular also the pole bodies 7 and 8 and the rotor 4 are preferably also mirror-symmetrical to a further plane of symmetry F which is oriented orthogonally to the main plane of symmetry E and also contains the axis of rotation A of the rotor 4.
  • the induction field B penetrates the intermediate space between the pole bodies 7 and 8 and thus the rotor 4. Due to the magnetic poles, not shown in FIG A torque is exerted on the rotor 4 and the attractive or repulsive forces acting on the induction field B as long as the poles are not aligned in the induction field B. This torque causes the rotation of the rotor 4 during operation of the drive motor 2.
  • the supply voltage applied to the induction winding arrangement with the induction windings 31 and 32 by the control means, not shown can be an AC voltage as an AC synchronous motor with a predetermined frequency, for example 230 V at 50 Hz, and in one embodiment as a DC motor synchronous motor, a DC voltage which is applied to the induction windings 31 and 32 at certain times, for example using a pulse alternation method.
  • the rotor 4 follows an alternating or rotating induction field B generated by the induction windings 31 and 32 and guided by the pole shoes 7 and 8.
  • the induction field B and the corresponding magnetic field of the stator 3 are superimposed on the rotating magnetic field of the rotor 4.
  • the resulting magnetic field is a field which is essentially symmetrical to the axis of rotation A of the rotor 4.
  • a magnetic field sensor 6 for detecting the position (angular position) of the rotor 4 is attached to the stator 3.
  • the magnetic field sensor 6 can, for example, be a Hall generator or also be a magnetoresistive sensor. When using a bipolar Hall generator, the magnetic field sensor 6 is also able to measure the polarity (north pole or south pole) of the rotor 4.
  • the magnetic field sensor 6 is used to determine the direction of rotation of the rotor 4 for the control means for controlling the drive motor 2.
  • other means for detecting the rotational position can also be provided, for example optical or inductive position sensors.
  • the rotor R is made of solid permanent magnet material, which is provided with two magnetic poles N (north pole) and S (south pole) which are offset by 180 ° to one another.
  • a central opening 45 for the drive shaft 5, not shown, is provided in the permanent magnet material.
  • the rotor 4 consists of a permanent magnet outer part 47 of circular cross-section and a three-dimensional cylindrical shell with two poles N and S and a core 46 again provided with the opening 45 made of a magnetizable ferromagnetic material, in particular soft magnetic iron such as sheet steel.
  • the rotor 4 according to FIG. 4 has four permanently magnetic outer parts, each shaped like a quarter-cylinder shell, around the core 46 47A to 47D, which are polarized alternately. This rotor 4 is thus four-pole.
  • the attached permanent magnet outer parts 47A to 47D on the core 46 according to FIG. 4 can be non-positively, positively or materially.
  • the rotor 4 each has a solid rotor body 43, preferably made of a magnetizable material such as, for example, steel that has been tinned again.
  • the rotor body 43 has a central opening 45 and slots (gaps, bores, openings) 42A to 42F in FIG. 1 or 41A to 41D in FIG. 2 or 40A and 40B in FIG. 3, which are filled with permanent magnetic material, on.
  • the size of the rotor body 43 decreases in the illustrated embodiments from FIG. 5 to FIG. 7.
  • the slots 40A to 42F are all the same size with the same length a.
  • the number of slots and slot arrangement is adapted to the different sizes of the rotor body 43. This has the advantage that a tool that is common for different rotors 4 can be used for the slots in production. It is of course also possible to use different slot sizes.
  • the slot dimensions are adapted to the mechanical and magnetic requirements of the drive motor 2.
  • the six slots 42A to 42F in FIG. 5, four slots 41A to 41D in FIG. 6 and two Slits 40A and 40B in FIG. 7 are arranged symmetrically to the central opening 45 on the periphery of the rotor body 43.
  • continuous slots in the rotor can also be provided in the circumferential direction.
  • the permanent magnetic material into the slots 40A to 42F and 44A and 44B according to FIGS. 5 to 7 and 14 to form the magnetic poles of the rotor 4.
  • prefabricated sintered, pressed or plastic-bonded magnets can be inserted into the slots.
  • the slots can be filled with magnetic powder or magnetic granulate, which is mixed with a binder.
  • a thermoplastic plastic, mixed with a magnetic granulate or powder can also be injected into the slots.
  • the magnetic material is magnetized after insertion into the slots in accordance with the desired preferred axes.
  • the parts of the rotor 4 consisting of laminated steel are also preferably formed as a laminated core, in that individual laminations punched according to the cross section shown in FIGS. 5, 6, 7 or 14 are connected to one another, for example welded or pressed together .
  • roller bearings or metal plain bearings for example made of copper, bronze or steel, not shown, can be used on the rotor 4 itself or on the drive shaft 5 in all embodiments.
  • plastic bearings which can be operated dry, wet or with special lubricants.
  • FIGS. 8 and 9 show embodiments of a drive motor 2 with a coherent, annular pole body 9, which is designed symmetrically to the main symmetry plane E and completely surrounds the rotor 4, not shown in FIGS. 8 and 9.
  • the pole body 9 is a part separate from the yoke 35 of the stator 3 and can be inserted into the yoke 35, two extensions 90 and 91 or 95 and 97 each engaging in bulges 92 and 93 or 94 and 96 in the yoke 35.
  • FIG. 8 and 9 show embodiments of a drive motor 2 with a coherent, annular pole body 9, which is designed symmetrically to the main symmetry plane E and completely surrounds the rotor 4, not shown in FIGS. 8 and 9.
  • the pole body 9 is a part separate from the yoke 35 of the stator 3 and can be inserted into the yoke 35, two extensions 90 and 91 or 95 and 97 each engaging in bulges 92 and 93 or 94 and 96 in the yok
  • the stator 3 again has a structure which is symmetrical with respect to the main plane of symmetry E, with a square yoke 35 and two induction windings 31 and 32 which are arranged symmetrically with respect to the main plane of symmetry E and are preferably prefabricated, each on one of the extensions 90 and 91 are placed on the pole body 9.
  • FIG. 10 An embodiment of a stator 3 with a distributed induction winding 34 for a drive motor 2 is illustrated in FIG. 10.
  • the induction winding 34 is guided in recesses 37 on the inside of the stator 3 in such a way that the resulting induction field B generated by all turns is mirror-symmetrical to the main plane of symmetry E.
  • a particularly advantageous control of the drive motor 2 is illustrated in the schematic diagram in FIG. 11.
  • a single-phase induction winding arrangement 30 is provided which, optionally together with additional pole bodies, generates an induction field B mirrored on a main plane of symmetry E.
  • the permanent magnet rotor 4 is mounted so that its axis of rotation A lies in the main plane of symmetry E.
  • the rotor 4 is designed with two poles, with a north pole N and a south pole S.
  • the rotor 4 is assigned a magnetic field sensor 6, which generates a measurement signal M which is a measure of the magnetic field of the permanent-magnet rotor 4.
  • the measurement signal M of the magnetic field sensor 6 changes periodically with a period of 360 ° for the angle of rotation of the rotor 4.
  • Means 12 for controlling the induction winding arrangement 30 with an electrical current I are also provided , which preferably a microprocessor and electronic actuators. These means 12 are also electrically connected to the magnetic field sensor 6 and evaluate the measurement signal M to form the current current value I.
  • the induction winding arrangement 30 is energized with a current pulse I of one polarity for half a period of 180 ° of the measurement signal M.
  • the polarity of the current I is reversed, so that the field direction of the induction field B is also reversed (electronic commutation). This ensures that the same torque is always exerted on the rotor 4 and that the rotor 4 rotates in the same direction.
  • the current pulse I lasts only part of the half period of 180 ° or also individual
  • the power of the drive motor 2 can also be controlled. If there are more than two magnetic poles of the rotor 4, the period of the measurement signal M is correspondingly shortened, corresponding to the number of pole changes in one revolution of the rotor 4. As long as the magnetic field sensor 6 is opposite a north pole of the rotor 4, corresponding to a first half period of 180 ° of the measurement signal M, the means 12 generate a current I of a polarity and vice versa for a south pole, corresponding to the other half period of likewise 180 ° of the measurement signal M, a current I of reversed polarity.
  • the means 12 preferably contain a corresponding start-up control in the form of a value table stored in a memory and readable by the microprocessor.
  • the motor itself controls its induction field B and its frequency by detecting the angular position of the rotor 4.
  • the speed of the motor 2 is thus determined on the basis of the mechanical load and the electrical energy supplied and not on the basis of an external frequency as in the case of a conventional synchronous motor.
  • the motor control principle according to FIG. 11 is not limited to a drive motor for a turbomachine, but can basically be used with any single-phase permanent magnet motor.
  • FIGS. 12 and 13 show the attachment of the drive motor 2 within a flow channel 10 of a flow machine, in particular a vacuum cleaner fan, for conveying a gaseous medium, for example air L.
  • a flow channel 10 In the flow channel 10 there is an impeller 13 of the turbomachine ordered, which is driven by the drive motor 2 via the drive shaft 5 and brings air L in the flow channel 10 to flow.
  • the drive motor 2 is now introduced into the flow channel 10 in such a way that an air gap remains between the drive motor 2 and the walls 14 and 15 of the flow channel 10, so that the air flow L between the side walls 14 and 15 of the flow channel and the outer surface of the drive motor 2 is performed.
  • This is particularly useful when the drive motor M is wound particularly tightly, so that internal ventilation of the laminated core and the copper coils is unfavorable, and ensures external cooling of the drive motor 2.
  • the length 1 along the axis of rotation A in the embodiment according to FIG. 12 is at most as large as the corresponding dimensions of the stator 3, so that the rotor 4 does not protrude from the stator 3, and smaller than the diameter d of the rotor 4.
  • covers 48 and 49 provided that cover the space between the rotor 4 and the stator 3 and protect it from the ingress of dirt or other foreign bodies and, if appropriate, protect the bearings of the rotor 4 that are also arranged there.
  • the drive motor 2 fills the entire flow channel 10 in cross section, i.e. the outer walls of the drive motor 2 rest on the inner walls 14 and 15 of the flow channel 10, so that here the sheet core and the copper coils are ventilated internally for cooling.
  • the rotor 4 protrudes from the stator 3 and has a greater length 1 than the diameter d.
  • FIGS. 12 and 13 A combination of the types of ventilation according to FIGS. 12 and 13 is also conceivable.
  • the air is first passed through the drive motor and then through the fan operated by the motor (impeller).
  • the cooling air can either come from the dust room or be sucked in directly through the ambient air through a bypass.
  • the electric motor described is suitable as a drive motor for all types of turbomachines, in particular fans for conveying air or another gas, pumps for conveying liquid media, compressors for gases or Liquids or heat pumps, however, is also suitable for other electric drives, for example for driving a washing drum of a washing machine, a grill in a stove and the like.
  • the motor according to the invention is preferably suitable for applications in a power range between approximately 100 W and approximately 2500 W.
  • the motor described is preferably used as the drive motor of a turbomachine of a household appliance.
  • Such flow machines can be, for example, blowers of vacuum cleaners, hair dryers, tumble dryers or domestic stoves (cooling blowers or circulating air blowers), circulation and / or drain pumps of washing machines or dishwashers, heat pumps of tumble dryers or also compressors (compressors) of refrigerators and / or freezers .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

Utilisation d'un moteur synchrone à aimants permanents (2) comme moteur d'entraînement d'une turbomachine dans un appareil électroménager.
EP97916405A 1996-03-29 1997-03-27 Turbomachine destinee notamment a un appareil electromenager Ceased EP0888663A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19612595 1996-03-29
DE19612595 1996-03-29
PCT/EP1997/001567 WO1997037423A2 (fr) 1996-03-29 1997-03-27 Turbomachine destinee notamment a un appareil electromenager

Publications (1)

Publication Number Publication Date
EP0888663A2 true EP0888663A2 (fr) 1999-01-07

Family

ID=7789889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97916405A Ceased EP0888663A2 (fr) 1996-03-29 1997-03-27 Turbomachine destinee notamment a un appareil electromenager

Country Status (2)

Country Link
EP (1) EP0888663A2 (fr)
WO (1) WO1997037423A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4089072B2 (ja) * 1998-10-23 2008-05-21 三菱電機株式会社 永久磁石埋込み形モータ
WO2003075733A1 (fr) * 2002-03-12 2003-09-18 Cube Investments Limited Moteur d'aspiration pour aspirateur
US6856113B1 (en) 2004-05-12 2005-02-15 Cube Investments Limited Central vacuum cleaning system motor control circuit mounting post, mounting configuration, and mounting methods
US8575873B2 (en) * 2010-08-06 2013-11-05 Nidec Motor Corporation Electric motor and motor control
US9729093B2 (en) 2015-12-15 2017-08-08 Whirlpool Corporation Observer based sensorless control for U-shape single phase synchronous permanent magnet motors

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703175C2 (de) * 1977-01-26 1979-03-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Gebläseaggregat für einen Staubsauger
FR2458933A1 (fr) * 1979-06-07 1981-01-02 Auxilec Moteur a courant continu sans contact glissant
US4845837A (en) * 1986-10-06 1989-07-11 Emerson Electric Co. Method of making permanent magnet assembly
FR2632465A1 (fr) * 1988-06-03 1989-12-08 Ventilation Electricite Appliq Moteur electrique a commutation electronique, notamment pour l'entrainement d'une machine de deplacement d'un fluide, en particulier un seche-cheveux, equipee d'un tel moteur
EP0358806B1 (fr) * 1988-09-15 1993-03-17 Siemens Aktiengesellschaft Moteur synchrone monophasé autodémarrant
JPH02264619A (ja) * 1989-04-05 1990-10-29 Hitachi Ltd 電気掃除機
SI8912097B (sl) * 1989-10-30 1999-04-30 Iskra-Elektromotorji, P.O., Enofazni enosmerni motor brez krtačk z veliko hitrostjo in veliko močjo
JP2852106B2 (ja) * 1990-07-20 1999-01-27 株式会社日立製作所 電気掃除機及び電動送風機
DE4033454A1 (de) * 1990-10-20 1992-04-23 Bosch Gmbh Robert Permanentmagnetrotor
JPH06261847A (ja) * 1993-03-11 1994-09-20 Hitachi Ltd ファンユニット及び電気掃除機
JP3257149B2 (ja) * 1993-05-20 2002-02-18 大同特殊鋼株式会社 環状マグネットのホィール配設構造
JP3619885B2 (ja) * 1995-02-15 2005-02-16 株式会社日立製作所 永久磁石回転子

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9737423A3 *

Also Published As

Publication number Publication date
WO1997037423A3 (fr) 1998-01-29
WO1997037423A2 (fr) 1997-10-09

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