DE350936C - Fan for electrical machines with alternating direction of rotation - Google Patents

Fan for electrical machines with alternating direction of rotation

Info

Publication number
DE350936C
DE350936C DENDAT350936D DE350936DD DE350936C DE 350936 C DE350936 C DE 350936C DE NDAT350936 D DENDAT350936 D DE NDAT350936D DE 350936D D DE350936D D DE 350936DD DE 350936 C DE350936 C DE 350936C
Authority
DE
Germany
Prior art keywords
fan
rotation
electrical machines
alternating direction
blades
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
DENDAT350936D
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.)
AEG AG
Original Assignee
AEG AG
Publication date
Application granted granted Critical
Publication of DE350936C publication Critical patent/DE350936C/en
Expired 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Lüfter für elektrische Maschinen mit wechselnder Drehrichtung. Zur Lüftung -von elektrischen Maschinen, (lie in Massenfabrikation hergestellt werden und gleichzeitig für Rechts- wie Linkslauf eingerichtet sein müssen; hat man bisher Lüfter mit radialen Schaufeln verwendet, .um .unabhängig von der Drehrichtung zu sein. Solche Lüfter haben naturgemäß einem sehr schlechten Nutzeffekt, da die Luft nur mit Stoß eintreten kann.Fan for electrical machines with alternating direction of rotation. To the Ventilation - of electrical machines, (were mass-produced and must be set up for clockwise and counterclockwise rotation at the same time; one has so far Fan with radial blades used. To .independent of the direction of rotation be. Such fans naturally have a very poor efficiency, since the air can only occur with shock.

Dieser Übelstand kann dadurch beseitigt werden, daß die Schaufeln drehbar angeordnet sind und sich selbsttätig in die der Drehrichtung entsprechende günstige Lage einstellen können.This drawback can be eliminated by removing the blades are arranged rotatably and automatically in the direction of rotation corresponding can set favorable location.

Um die ungewünschte Wirkung der Zentrifugalkräfte der Schaufeln zu beseitigen, bringt man gemäß der Erfindung an jeder Schaufel ein Gegengewicht an, dessen Masse und Lage so bestimmt wird, daß der Einfluß der Zentrifugalkräfte ohne Einfluß ist. DieAbbildungen zeigen ein Beispiel derAnordnüng. Es bezeichnet a und b :die Seitenwände des Lüfters, c und d Befestigungsschrauben und Streben,' mittels deren die Scheibe b an die Scheibe a befestigt wird, e die drehbaren Schaufeln, die .mittels Lappen f in Bohrungen der Scheiben gelabert sind, g. das Gegengewicht.In order to eliminate the undesired effect of the centrifugal forces of the blades, according to the invention, a counterweight is attached to each blade, the mass and position of which is determined in such a way that the influence of the centrifugal forces has no influence. The figures show an example of the arrangement. It denotes a and b: the side walls of the fan, c and d fastening screws and struts, by means of which the disk b is fastened to the disk a , e the rotatable blades, which are labeled by means of tabs f in the bores of the disks, g. the counterweight.

Claims (1)

PATENT-ANspRUcH: Lüfter für elektrische Maschinen, bei ;dem die Schaufeln derart .drehbar angeordnet sind, daß sie sich beim Wechsel der Drehrichtung in eine der Förderung ,des Lüfters günstige Lage einstellen können, dadurch gekennzeichnet @, daß durch an den Schaufeln angebrachte Wegenge eichte die ider Einstellum,g entgegenwirkenden Zentrifu.galkräfte unwirksam gemacht werden.PATENT CLAIM: Fan for electrical machines with blades Are arranged so .rotatably that they are when changing the direction of rotation in a the promotion, the fan can set a favorable position, characterized @ that the ider setting, g counteracting by means of paths attached to the shovels Centrifugal forces are rendered ineffective.
DENDAT350936D Fan for electrical machines with alternating direction of rotation Expired DE350936C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE350936T

Publications (1)

Publication Number Publication Date
DE350936C true DE350936C (en) 1922-03-29

Family

ID=6265332

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT350936D Expired DE350936C (en) Fan for electrical machines with alternating direction of rotation

Country Status (1)

Country Link
DE (1) DE350936C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394199A1 (en) * 1977-06-07 1979-01-05 Westinghouse Electric Corp Sync. dynamoelectric machine cooling system - has series of shaped and angled blades ends to circulate air through interpolar spaces (NO 2.1.79)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394199A1 (en) * 1977-06-07 1979-01-05 Westinghouse Electric Corp Sync. dynamoelectric machine cooling system - has series of shaped and angled blades ends to circulate air through interpolar spaces (NO 2.1.79)

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