DE516747C - Forced ventilated asynchronous motor in which the cooling effect of the fan also increases with increasing power of the cooled motor - Google Patents

Forced ventilated asynchronous motor in which the cooling effect of the fan also increases with increasing power of the cooled motor

Info

Publication number
DE516747C
DE516747C DES77296D DES0077296D DE516747C DE 516747 C DE516747 C DE 516747C DE S77296 D DES77296 D DE S77296D DE S0077296 D DES0077296 D DE S0077296D DE 516747 C DE516747 C DE 516747C
Authority
DE
Germany
Prior art keywords
motor
fan
increases
cooling effect
ventilated
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.)
Expired
Application number
DES77296D
Other languages
German (de)
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
Publication date
Priority to DES77296D priority Critical patent/DE516747C/en
Application granted granted Critical
Publication of DE516747C publication Critical patent/DE516747C/en
Expired legal-status Critical Current

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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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Description

Die Erfindung betrifft einen Asynchronmotor mit Fremdbelüftung, die nach, dem jeweiligen Bedarf dadurch geregelt wird, daß der den Ventilator antreibende Motor in seiner Leistung von der Schlupffrequenz des zu lüftenden Motors so abhängig ist, daß die Kühlwirkung mit der Schlupf frequenz proportional oder in anderem Verhältnis wächst. Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt. Der Asynchronmotor« wird mittels des Widerständsreglers b geregelt und weist eine seinem Schlupf entsprechende Erwärmung auf. Er wird durch einen Ventilator c belüftet, dessen Antriebsmotord, z.B. ein Kurzschlußläufermotor, an den Läuferstromkreis e des Hauptmotors angeschlossen ist. Die Leistung des Ventilator motors nimmt mit der Frequenz des Läuferstrpmkreises, also mit dem Schlupf des zu lüftenden Hauptmotors zu oder ab; die Kühlwirkung wird damit selbsttätig geregelt und bleibt auf den jeweiligen Bedarf beschränkt. Hierdurch wird eine Ersparnis an Ventilätorleistung erzielt. Die Abhängigkeit der Ventilatormotorleistung vom Hauptmotorschlupf kann auch durch andere Schaltungen und Mittel erzielt werden. Z. B. könnte der Ventilatormotor ein Gleichstrommotor sein, dessen Erregung von einem Frequenzrelais gesteuert wird; doch ist diese Einrichtung weniger einfach und setzt eine Gleichstromquelle voraus.The invention relates to an asynchronous motor with external ventilation, which is controlled according to the respective need in that the performance of the motor driving the fan is dependent on the slip frequency of the motor to be ventilated so that the cooling effect with the slip frequency is proportional or in a different ratio grows. An embodiment of the invention is shown in simplified form in the drawing. The asynchronous motor «is regulated by means of the resistance regulator b and has a temperature rise corresponding to its slip. It is ventilated by a fan c whose drive motor d, for example a squirrel cage motor, is connected to the rotor circuit e of the main motor. The performance of the fan motor increases or decreases with the frequency of the rotor speed circuit, i.e. with the slip of the main motor to be ventilated; the cooling effect is thus regulated automatically and remains limited to the respective requirement. A saving in fan power is achieved in this way. The dependence of the fan motor power on the main motor slip can also be achieved by other circuits and means. For example, the fan motor could be a DC motor, the excitation of which is controlled by a frequency relay; however, this facility is less straightforward and requires a direct current source.

Claims (2)

Patentansprüche:Patent claims: ι. Fremdbelüfteter Asynchronmotor, bei dem die Kühlwirkung des Lüfters mit zunehmender Leistung des gekühlten Motors ebenfalls zunimmt, dadurch gekennzeichnet, daß der Antriebsmotor des Fremdlüfters durch die Schlupf energie des Asynchronmotors derart angetrieben oder gesteuert wird, daß" die Drehzahl des Lüftermotors bei zunehmender Schlupfenergie, d. h. bei abnehmender Drehzahl des Asynchronmotors, ansteigt und damit auch die Kühlwirkung des Ventilators selbst wächst.ι. Forced ventilated asynchronous motor in which the cooling effect of the fan increases with increasing The power of the cooled engine also increases, characterized in that that the drive motor of the external fan through the slip energy of the asynchronous motor is driven or controlled such that "the speed of the fan motor with increasing slip energy, d. H. with decreasing speed of the asynchronous motor, increases and thus the cooling effect of the fan itself increases. 2. Ausführungsform nach Anspruch 1, dadurch gekennzeichnet, daß ein an den Läuferstromkreis des zu lüftenden Motors 5" angeschlossener Wechselstrommotor als Antriebsmotor des Ventilators dient.2. Embodiment according to claim 1, characterized in that one to the Rotor circuit of the motor to be ventilated 5 "connected AC motor as Drive motor of the fan is used. *) Von dein Patentsucher ist als der Erfinder angegeben worden:*) Your patent seeker stated as the inventor: Jakob Giltmann in Wien.Jakob Giltmann in Vienna.
DES77296D Forced ventilated asynchronous motor in which the cooling effect of the fan also increases with increasing power of the cooled motor Expired DE516747C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES77296D DE516747C (en) Forced ventilated asynchronous motor in which the cooling effect of the fan also increases with increasing power of the cooled motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES77296D DE516747C (en) Forced ventilated asynchronous motor in which the cooling effect of the fan also increases with increasing power of the cooled motor

Publications (1)

Publication Number Publication Date
DE516747C true DE516747C (en) 1931-01-27

Family

ID=7506713

Family Applications (1)

Application Number Title Priority Date Filing Date
DES77296D Expired DE516747C (en) Forced ventilated asynchronous motor in which the cooling effect of the fan also increases with increasing power of the cooled motor

Country Status (1)

Country Link
DE (1) DE516747C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112782B (en) * 1960-05-20 1961-08-17 Siemens Ag Ventilation of motors with slack runners by their own, co-rotating fan motor
DE3231152A1 (en) * 1981-08-27 1983-08-04 Robert Bosch Gmbh, 7000 Stuttgart Externally-ventilated alternator, especially as a three-phase alternator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112782B (en) * 1960-05-20 1961-08-17 Siemens Ag Ventilation of motors with slack runners by their own, co-rotating fan motor
DE3231152A1 (en) * 1981-08-27 1983-08-04 Robert Bosch Gmbh, 7000 Stuttgart Externally-ventilated alternator, especially as a three-phase alternator

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