DE440393C - Arrangement to improve the cooling air flow between the salient poles of electrical machines inserted into the rotor body with air slots in the rotor body - Google Patents

Arrangement to improve the cooling air flow between the salient poles of electrical machines inserted into the rotor body with air slots in the rotor body

Info

Publication number
DE440393C
DE440393C DES63280D DES0063280D DE440393C DE 440393 C DE440393 C DE 440393C DE S63280 D DES63280 D DE S63280D DE S0063280 D DES0063280 D DE S0063280D DE 440393 C DE440393 C DE 440393C
Authority
DE
Germany
Prior art keywords
rotor body
arrangement
electrical machines
improve
salient poles
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
DES63280D
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
Original Assignee
Siemens Schuckertwerke AG
Publication date
Priority to DES63280D priority Critical patent/DE440393C/en
Application granted granted Critical
Publication of DE440393C publication Critical patent/DE440393C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Description

Anordnung zur Verbesserung der Kühlluftführüng zwischen den in den Läuferkörper eingesetzten'Schenkelpöien elektrischer Maschinen mit Luftschlitzen im Läuferkörper. Bei Läufern mit Schenkelpolen ist es bekannt, Luftschlitze im Läuferkörper anzubringen, durch die den Erregerwicklungen Kühlluft zugeführt wird. Nach der Erfindung wird die Kühlung derartiger Läufer dadurch erheblich verbessert, daß die Schenkel der Pole in der Nähe des Läuferkörpers von der Erregerwicklung frei bleiben.Arrangement to improve the Kühlluftführung between the in the Rotor body used 'thighs of electrical machines with air slots in the runner body. In rotors with salient poles, it is known to have air slots in the rotor body through which cooling air is supplied to the excitation windings. According to the invention the cooling of such runners is significantly improved in that the legs the pole in the vicinity of the rotor body remain free from the excitation winding.

Ein Ausführungsbeispiel für die Erfindung ist in der Zeichnung dargestellt. In dieser zeigt Abb. r einen Schnitt senkrecht zur Achse eines Läufers mit Schenkelpolen, Abb. 2 einen Schnitt in der Richtung der Achse. k bedeutet den Läuferkörper mit den Luftschlitzen z. Mit p sind die Pole, mit s die Polschenkel und mit w die Erregerwicklungen bezeichnet. Nach der Erfindung bleiben die Polschenkel s in der Nähe des Läuferkörpers h auf dem Stück d von Erregerwicklungen frei. Hierdurch wird erreicht, daß die Austrittsbreite für die Luft aus den Kanälen z um ein erhebliches Stück größer wird als bei einer Anordnung, bei der die Erregerwicklungen bis an den Polkörper heranreichen. Die Breite wird jetzt, wie ersichtlich, anstatt a die Größe b erhalten. Es kann also mehr Luft durch die Luftschlitze z austreten als bisher. Da die Luft in dem freien Raum zwischen den Erregerwicklungen und dem Läuferkörper sich ausbreiten kann, wird auch der Querschnitt a für die Durchführung der Luft zwischen den nach den Achsenden zu liegenden Teilen der Erregerwicklungen voll ausgenutzt, so daß die durch die Kanäle z austretende Luft uneingeschränkt weiterfließen kann. Außerdem wird eine bessere Verteilung des Kühlluftstromes auch auf die nach den Seiten zu gelegenen Teile der Erregerwicklungen erzielt, so daß die Kühlung dieser Wicklungen ganz erheblich verbessert wird.An embodiment of the invention is shown in the drawing. In this Fig. R shows a section perpendicular to the axis of a rotor with salient poles, Fig. 2 shows a section in the direction of the axis. k means the rotor body with the air slots z. The poles are designated with p, the pole legs with s and the excitation windings with w. According to the invention, the pole legs s in the vicinity of the rotor body h on the piece d remain free of excitation windings. This ensures that the exit width for the air from the channels z is considerably larger than in an arrangement in which the excitation windings reach up to the pole body. As can be seen, the width is now given size b instead of a. So more air can escape through the air slots z than before. Since the air in the free space between the excitation windings and the rotor body can spread, the cross-section a is also fully utilized for the passage of the air between the parts of the excitation windings that are to the axis ends, so that the air exiting through the channels z is unrestricted can continue to flow. In addition, a better distribution of the cooling air flow is also achieved on the parts of the excitation windings that are to the sides, so that the cooling of these windings is considerably improved.

Die Kühlung kann in an sich bekannter Weise noch dadurch weiter verbessert werden, daß in den die Wicklung überragenden Teilen der Polschenkel Einschnitte e zur Führung der Kühlluft vorgesehen werden. Hierdurch wird die Breite der Austrittsöffnungen für die Kühlluft aus dem Läuferkörper auf die Größe c gebracht und der Strömungswiderstand für die Luft innerhalb des Läuferkörpers verringert.The cooling can thereby be further improved in a manner known per se that in the parts of the pole legs protruding beyond the winding incisions e are provided to guide the cooling air. This increases the width of the outlet openings for the cooling air from the rotor body brought to size c and the flow resistance for the air inside the rotor body is reduced.

Claims (1)

PATENTANSPRUCH: Anordnung zur Verbesserung der Kühlluftführung zwischen den in den Läuferkörper eingesetzten Schenkelpolen elektrischer Maschinen mit Luftschlitzen im Läuferkörper, dadurch gekennzeichnet, daß der Polschenkel an der Stelle, wo er aus dem Läuferkörper herausragt, auf eine Strecke (d) von Wicklung frei bleibt. Claim: Arrangement for improving the cooling air flow between the leg poles of electrical machines inserted into the rotor body with air slots in the rotor body, characterized in that the pole leg remains free of winding for a distance (d) at the point where it protrudes from the rotor body.
DES63280D Arrangement to improve the cooling air flow between the salient poles of electrical machines inserted into the rotor body with air slots in the rotor body Expired DE440393C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES63280D DE440393C (en) Arrangement to improve the cooling air flow between the salient poles of electrical machines inserted into the rotor body with air slots in the rotor body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES63280D DE440393C (en) Arrangement to improve the cooling air flow between the salient poles of electrical machines inserted into the rotor body with air slots in the rotor body

Publications (1)

Publication Number Publication Date
DE440393C true DE440393C (en) 1927-02-04

Family

ID=7496258

Family Applications (1)

Application Number Title Priority Date Filing Date
DES63280D Expired DE440393C (en) Arrangement to improve the cooling air flow between the salient poles of electrical machines inserted into the rotor body with air slots in the rotor body

Country Status (1)

Country Link
DE (1) DE440393C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919040A1 (en) * 1999-02-25 2000-09-07 Helmuth Beneke Electric machine, in particular three-phase machine
DE102006020149A1 (en) * 2006-05-02 2007-11-15 Siemens Ag Synchronous salient pole machine e.g. ring motor, for use in ball mill, has yoke with yoke section arranged between two salient poles, where yoke section has radial air passage that radially separates air portion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919040A1 (en) * 1999-02-25 2000-09-07 Helmuth Beneke Electric machine, in particular three-phase machine
DE19919040C2 (en) * 1999-02-25 2002-06-20 Helmuth Beneke Synchronous or asynchronous machine for large wind turbines
DE102006020149A1 (en) * 2006-05-02 2007-11-15 Siemens Ag Synchronous salient pole machine e.g. ring motor, for use in ball mill, has yoke with yoke section arranged between two salient poles, where yoke section has radial air passage that radially separates air portion

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