DE3313768A1 - Asynchronous electric motor having a rotation frequency which can be regulated - Google Patents

Asynchronous electric motor having a rotation frequency which can be regulated

Info

Publication number
DE3313768A1
DE3313768A1 DE19833313768 DE3313768A DE3313768A1 DE 3313768 A1 DE3313768 A1 DE 3313768A1 DE 19833313768 DE19833313768 DE 19833313768 DE 3313768 A DE3313768 A DE 3313768A DE 3313768 A1 DE3313768 A1 DE 3313768A1
Authority
DE
Germany
Prior art keywords
rotor
electric motor
fan
motor
asynchronous electric
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.)
Withdrawn
Application number
DE19833313768
Other languages
German (de)
Inventor
Minko Iliev Dipl.-Ing. Beli Ossam Lovetsch Dotschev
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.)
ELEKTROMOTOREN SAVOD ELPROM
Original Assignee
ELEKTROMOTOREN SAVOD ELPROM
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 ELEKTROMOTOREN SAVOD ELPROM filed Critical ELEKTROMOTOREN SAVOD ELPROM
Priority to DE19833313768 priority Critical patent/DE3313768A1/en
Publication of DE3313768A1 publication Critical patent/DE3313768A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor

Abstract

The invention relates to an asynchronous electric motor having a rotation frequency which can be regulated, for electrical drives. The asynchronous electric motor has a simplified structure and a reduced consumption of active materials and energy. The asynchronous electric motor having a rotation frequency which can be regulated has a stator (1), a front and a rear bearing plate (4, 8), a laminated, short-circuited motor rotor (2) which is supported in the front bearing plate (4), a ventilator rotor (3) which is supported in the rear bearing plate (8), and a ventilator (10) which is surrounded by a jacket (11) which is attached to the body of the stator (1). The motor rotor (2) has an increased rotor impedance and is supported together with the ventilator rotor (3) in two bearing seats having bearings in the ventilator rotor (3) which is produced from a dense ferromagnetic material and has a formed shaft (13) on its other side. <IMAGE>

Description

ASYNCHRONER ELEKTROMOTOR MIT REGULIERBARER DREHFREQUENZASYNCHRONOUS ELECTRIC MOTOR WITH ADJUSTABLE ROTATION FREQUENCY

Die Erfindung betrifft einen asynchronen Elektromotor mit regulierbarer Drehfrequenz zur Anwendung bei elektrischen Antrieben.The invention relates to an asynchronous electric motor with adjustable Rotational frequency for use in electrical drives.

Bekannt ist ein asynchroner Elektromotor mit in einem breiten Bereich regulierbarer Drehfrequenz (US-PS 3 749 949).An asynchronous electric motor is known with a wide range adjustable rotational frequency (U.S. Patent No. 3,749,949).

Drei Läufer befinden sich innerhalb des Stators dieses Elektromotors: ein schichtkurzgeschlossener Motorläufer, ein hohler unmagnetischer Läufer, der zur Welle des Motorläufers unbeweglich zugeordnet ist und ein schichtkurzgeschlossener Ventilatorläufer mit einer unabhängigen Lagerung, an dessen Welle ein Ventilator montiert ist. Der Ventilatorläufer befindet sich innerhalb des hohlen Läufers. Die Welle des Ventilatorläufers ist hohl und durch sie tritt die Welle des Motorläufers frei hindurch. Die Lagerung des Motorläufers ist mit einem Lager in dem vorderen Lagerschild und mit einem Außenlager im Mantel des Ventilators verwirklicht. Der Ventilatorläufer ist mittels eines im hinteren Lagerschild liegenden. tagersundeines im Mantel des Ventilators liegenden inneren Lagers gelagert, welcher Mantel am Körper des Stators befestigt ist. Der Ventilator des Elektromotors befindet sich hinter dem hinteren Lagerschild und ist vom Mantel des Ventilators umfaßt.There are three rotors inside the stator of this electric motor: a layer short-circuited motor runner, a hollow, non-magnetic runner, the is assigned immovably to the shaft of the motor rotor and a layer short-circuited Fan rotor with an independent bearing, on whose shaft a fan is mounted. The fan runner is inside the hollow runner. the The fan rotor shaft is hollow and the motor rotor shaft passes through it freely through. The bearing of the motor rotor is with a bearing in the front Realized end shield and with an external bearing in the jacket of the fan. Of the Fan runner is by means of a located in the rear end shield. day and day stored in the jacket of the fan lying inner bearing, which jacket on the body of the stator is attached. The fan of the electric motor is behind the rear end shield and is covered by the jacket of the fan.

Ein Nachteil dieses bekannten Elektromotors ist seine komplizierte Konstruktion und der große Luftraum zwischen dem Ventilatorläufer und dem Stator, welcher zu einem erhöhten Verbrauch von aktiven Materialien und Energie führt.A disadvantage of this known electric motor is that it is complicated Construction and the large air space between the fan rotor and the stator, which leads to an increased consumption of active materials and energy.

Die Aufgabe der Erfindung besteht darin, einen asynchronen Elektromotor mit regulierbarer Drehfrequenz zu schaffen, der der eine vereinfachte Konstruktion und einen verminderten Verbrauch von aktiven Materialien und Energie hat.The object of the invention is to provide an asynchronous electric motor with adjustable rotational frequency to create the the one simplified Construction and a reduced consumption of active materials and energy Has.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß sich innerhalb des Stators zwei Läufer befinden: ein schichtkurzgeschlossener Motorläufer mit einem erhöhten Läuferwiderstan und ein Ventilatorläufer. Der Ventilatorläufer ist aus eine dichten Ferromagnetmaterial hergestellt, innerhalb dessen es auf der Seite des Motorläufers zwei Lagersitze gibt und der auf der anderen Seite mit einer geformten Welle endet. Der Motorläufer ist einerseits im vorderen Lagerschild und andererseits zusammen mit dem Ventilatorläufer durch zwei Lager gelagert, die sich im Lagersitz des Ventilatorläufers befinden. Der Ventilatorläufer ist auch im hinteren Lagerschild gelagert. An der Welle des Ventilatorläufers ist ein Ventilator montiert, der von einem am Körper des Stators befestig ten Mantel umfaßt ist.This object is achieved in that within of the stator there are two rotors: a layer-short-circuited motor rotor with one increased runner resistance and a fan runner. The fan runner is off a dense ferromagnetic material is made within which it is on the side of the motor rotor are two bearing seats and the one on the other side with a shaped one Wave ends. The motor rotor is on the one hand in the front end shield and on the other hand Bearing together with the fan rotor by two bearings, which are in the bearing seat of the fan rotor. The fan runner is also in the rear end shield stored. A fan is mounted on the shaft of the fan rotor, which is operated by a cladding fastened to the body of the stator is included.

Die Vorteile des erfindungsgemäßen asynchronen Elektromotors bestehen in der vereinfachten Konstruktion, der vereinfachte Lagerung des Motorläufers und des Ventilatorläufers in den Lagerschilden und im reduzierten Verbrauch von aktiven Materialien und Energie.The advantages of the asynchronous electric motor according to the invention exist in the simplified construction, the simplified storage of the motor rotor and of the fan rotor in the end shields and in the reduced consumption of active ones Materials and energy.

Anhand des in der Zeichnung gezeigten Ausführungsbeispiels, das einen Längsschnitt des asynchronen Elektromotors mit regulierbarer Drehfrequenz darstellt, wird die Erfindung näher erläutert.Based on the embodiment shown in the drawing, the one Shows the longitudinal section of the asynchronous electric motor with adjustable rotational frequency, the invention is explained in more detail.

Innerhalb des Stators 1 befinden sich ein Motorläufer 2 und ein Ventilatorläufer 3. Der Motorläufer 2 ist ein schichtkurz geschlossener Läufer mit erhöhtem Läuferwiderstand. Der Ventilatorläufer 3 ist aus einem dichten Ferromagnetmaterial hergestellt und endet mit einer geformten Welle. Der Motorläufer 2 ist in einem vorderen Lagerschild 4 mittels eines Lagers 5 gelagert und zusammen mit dem Ventilatorläufer 3 in Lagersitzen des Ventilatorläufers 3 mit Lagern 6 und 7 gelagert, die aus zwei Schutzscheiben ausgeführt sind. Der Ventilatorläufer 3 ist auch im hinteren Lagerschild 8 mittels eines Lagers 9 gelagert. An der Welle 13 des Ventilatorläufers 3 ist ein Ventilator 10 montiert, der von einem am Körper 12 des Stators 1 befestigten Mantel 11 umfaßt ist.A motor rotor 2 and a fan rotor are located inside the stator 1 3. The motor rotor 2 is a short-shift closed rotor with increased rotor resistance. The fan rotor 3 is made of a dense ferromagnetic material and ends with a shaped shaft. The motor runner 2 is in one front bearing plate 4 mounted by means of a bearing 5 and together with the fan rotor 3 mounted in bearing seats of the fan rotor 3 with bearings 6 and 7, which consist of two Protective discs are carried out. The fan rotor 3 is also in the rear end shield 8 stored by means of a bearing 9. On the shaft 13 of the fan rotor 3 is a Fan 10 is mounted by a jacket attached to the body 12 of the stator 1 11 is included.

Der Elektromotor wirkt wie folgt: Das von dem Stator 1 erzeugte Magnetfeld tritt durch den Motorläufer 2 und den Ventilatorläufer 3 hindurch. Das Charakteristische in diesem Fall ist, daß der Motorläufer 2 in dem Ventilatorläufer 3 mittels den Lagern 6 und 7 gelagert ist.The electric motor works as follows: The magnetic field generated by the stator 1 passes through the motor rotor 2 and the fan rotor 3. The characteristic in this case is that the motor rotor 2 in the fan rotor 3 by means of the Bearings 6 and 7 is stored.

Die Drehfrequenzen der beiden Läufer werden verschieden sein bei einer Veränderung der Speisespannung des Elektromotors und konstanter Belastung des Motorläufers 2. Die Drehfrequenz des Motorläufers 2 bei konstanter Belastung wird in dem ganzen von der Veränderung der Speisespannung bestimmten Regulierungsbereich geändert, während die Drehfrequenz des Ventilatorläufers 3 in einem verhältnismäßig kleinen Bereich verändert wird. Hierdurch erzeugt der Ventilatorläufer 3 mittels des Ventilators 10 einenfürdieKühlung des Elektromotors ausreichenden Kühl luftstrom.The rotational frequencies of the two rotors will be different in one Change in the supply voltage of the electric motor and constant load on the motor rotor 2. The rotational frequency of the motor rotor 2 at constant load is in the whole the regulation range determined by the change in the supply voltage, while the rotational frequency of the fan rotor 3 is relatively small Area is changed. As a result, the fan rotor 3 generates by means of the fan 10 a cooling air flow that is sufficient to cool the electric motor.

Die Drehfrequenz des Motorläufers 2 kann auch durch Belastungsveränderung des Elektromotors geändert werden. Die Rolle des Ventilatorläufers bleibt in diesem Fall dieselbe.The rotational frequency of the motor rotor 2 can also be changed by changing the load of the electric motor can be changed. The role of the fan rotor remains in this Case the same.

Das gilt für den ganzen Regulierbereich der Drehfrequenz des Elektromotors, dessen untere Grenze nahe Null sein kann.This applies to the entire regulation range of the rotational frequency of the electric motor, the lower limit of which can be close to zero.

Claims (1)

ASYNCHRONER ELEKTROMOTOR MIT REGULIERBARER DREHFREQUENZ Patentanspruch Asynchroner Elektromotor mit regulierbarer Drehfrequenz, mit einem Stator (1), einem vorderen und einem hinteren Lagerschild (4, 8), einem im vorderen Lagerschild (4) gelagerten schichtkurzgeschlossenen Motorläufer (2), einem im hinteren Lagerschild (8) gelagerten Ventilatorläufer (3) und einem Ventilator (1G), der von einem am Körper des Stators (1) befestigten Mantel (11) erfaßt ist, dadurch g e k e n n -z e i c h n e t, daß der Motorläufer (2) einen erhöhten Läuferwiderstand aufweist und zusammen mit dem Ventilatorläufer (3) in zwei Lagersitzen mit Lagern (6, 7) im Ventilatorläufer (3) gelagert ist, welcher aus einem dichten Ferromagnetmaterial hergestellt ist und auf seiner anderen Seite eine geformte Welle (13) hat.ASYNCHRONOUS ELECTRIC MOTOR WITH ADJUSTABLE ROTATION FREQUENCY Patent claim Asynchronous electric motor with adjustable rotational frequency, with a stator (1), a front and one rear end shield (4, 8), one in the front end shield (4) layered motor rotor (2) with a short-circuit, one in the rear end shield (8) mounted fan rotor (3) and a fan (1G), which is operated by an am Body of the stator (1) attached jacket (11) is detected, thereby g e k e n n -z e i c h n e t that the motor rotor (2) has an increased rotor resistance and together with the fan rotor (3) in two bearing seats with bearings (6, 7) is mounted in the fan rotor (3), which is made of a dense ferromagnetic material is made and has a shaped shaft (13) on its other side.
DE19833313768 1983-04-15 1983-04-15 Asynchronous electric motor having a rotation frequency which can be regulated Withdrawn DE3313768A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833313768 DE3313768A1 (en) 1983-04-15 1983-04-15 Asynchronous electric motor having a rotation frequency which can be regulated

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833313768 DE3313768A1 (en) 1983-04-15 1983-04-15 Asynchronous electric motor having a rotation frequency which can be regulated

Publications (1)

Publication Number Publication Date
DE3313768A1 true DE3313768A1 (en) 1984-10-18

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998050998A1 (en) * 1997-05-06 1998-11-12 Notetry Limited A motor
WO1999039426A1 (en) * 1998-01-30 1999-08-05 Schroedl Manfred Electric machine
CN103441632A (en) * 2013-09-11 2013-12-11 永济新时速电机电器有限责任公司 High-power asynchronous traction motor for alternating-current transmission rapid passenger transportation electric locomotive

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH200794A (en) * 1937-08-10 1938-10-31 Oerlikon Maschf AC motor with a gas-tight rotor sealed from the rest of the motor interior, especially for driving refrigeration machines
DE1935246B2 (en) * 1969-07-11 1975-09-11 Arnold 7312 Kirchheim Mueller Induction motor for variable speed drive - has concentric auxiliary blower and eddy current rotors
DE7225366U (en) * 1975-09-18 Mueller A Controllable asynchronous motor
DE2606807B2 (en) * 1976-02-20 1980-05-29 Walter Dipl.-Ing. 8080 Emmering Rappenglueck Electric motor for output on both sides
DE2145919B2 (en) * 1971-09-14 1981-01-22 Nipkiep, Sofia Encapsulated electrical machine with external rotor
EP0050771A1 (en) * 1980-10-24 1982-05-05 Mitsubishi Denki Kabushiki Kaisha Rotating electric machinery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7225366U (en) * 1975-09-18 Mueller A Controllable asynchronous motor
CH200794A (en) * 1937-08-10 1938-10-31 Oerlikon Maschf AC motor with a gas-tight rotor sealed from the rest of the motor interior, especially for driving refrigeration machines
DE1935246B2 (en) * 1969-07-11 1975-09-11 Arnold 7312 Kirchheim Mueller Induction motor for variable speed drive - has concentric auxiliary blower and eddy current rotors
DE2145919B2 (en) * 1971-09-14 1981-01-22 Nipkiep, Sofia Encapsulated electrical machine with external rotor
DE2606807B2 (en) * 1976-02-20 1980-05-29 Walter Dipl.-Ing. 8080 Emmering Rappenglueck Electric motor for output on both sides
EP0050771A1 (en) * 1980-10-24 1982-05-05 Mitsubishi Denki Kabushiki Kaisha Rotating electric machinery

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998050998A1 (en) * 1997-05-06 1998-11-12 Notetry Limited A motor
US6316858B1 (en) 1997-05-06 2001-11-13 Notetry Limited Motor
MY120041A (en) * 1997-05-06 2005-08-30 Dyson Technology Ltd A motor
WO1999039426A1 (en) * 1998-01-30 1999-08-05 Schroedl Manfred Electric machine
US6373160B1 (en) 1998-01-30 2002-04-16 Schroedl Manfred Electric machine
CN103441632A (en) * 2013-09-11 2013-12-11 永济新时速电机电器有限责任公司 High-power asynchronous traction motor for alternating-current transmission rapid passenger transportation electric locomotive
CN103441632B (en) * 2013-09-11 2015-08-05 永济新时速电机电器有限责任公司 Alternating-current transmission rapid passenger transportation use for electric locomotive power asynchronous traction motor of high

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