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DE275002C - - Google Patents

Info

Publication number
DE275002C
DE275002C DENDAT275002D DE275002DA DE275002C DE 275002 C DE275002 C DE 275002C DE NDAT275002 D DENDAT275002 D DE NDAT275002D DE 275002D A DE275002D A DE 275002DA DE 275002 C DE275002 C DE 275002C
Authority
DE
Germany
Prior art keywords
magnet
winding
cooling
generated
fan
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.)
Active
Application number
DENDAT275002D
Other languages
German (de)
Publication of DE275002C publication Critical patent/DE275002C/de
Active legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/20Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206Electromagnets for lifting, handling or transporting of magnetic pieces or material

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Transformer Cooling (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die Einführung von Lasthebemagneten scheitert in vielen Fällen daran, daß sie infolge ihres sehr großen Eigengewichtes das Hebezeug sehr stark unnütz belasten.
Die Tragfähigkeit des Magneten läßt sich durch stärkere Erregung wesentlich erhöhen; aus Gründen der Erwärmung der Bewicklung ist jedoch eine Grenze bald erreicht.
The introduction of lifting magnets fails in many cases because, as a result of their very large weight, they load the hoist very heavily and uselessly.
The load-bearing capacity of the magnet can be increased significantly by stronger excitation; for reasons of warming the wrapping, however, a limit will soon be reached.

Es ist nun bereits versucht worden, dieIt has now been tried that

ίο Leistungsfähigkeit der Magnete durch künstliche Kühlung der Wicklung zu erhöhen. Aber die zu diesem Zwecke vorgeschlagene Rippenkühlung wirkt nur unvollkommen, da sie im wesentlichen nur den Magnetmantel kühlt; denn bei ihr findet kein genügender Wärmeaustausch zwischen der von elektrischem Isoliermaterial, das auch ein schlechter Wärmeleiter ist, umkleideten Wicklung und der Außenluft statt.ίο Performance of the magnets through artificial ones Increase cooling of the winding. But the rib cooling proposed for this purpose only works imperfectly it essentially only cools the magnetic jacket; because with her none will find a sufficient one Heat exchange between that of electrical insulating material, which is also a poor conductor of heat is, sheathed winding and the outside air instead.

Es ist auch eine Kühlung der Wicklungen durch Preßluft bekannt, bei welcher aber die notwendige Schlauchführung bei der zu fordernden Beweglichkeit der Hebemagnete zu erheblichen Anständen im Betriebe Anlaß gibt.It is also known to cool the windings by compressed air, but in which the necessary hose routing with the required mobility of the lifting magnets gives rise to considerable adversity in the company.

Gemäß vorliegender Erfindung wird eine wirkungsvolle und betriebssichere Kühlung dadurch erzielt, daß, wie in der Zeichnung angedeutet ist, durch einen im Hebemagneten eingebauten elektrisch betriebenen Ventilator ein Luftstrom durch Kanäle derart geleitet wird, daß der Luftstrom unmittelbar an den in mehrere Lagen unterteilten Wicklungen vorbeistreicht und nach seiner Wirkung als Kühler aus dem Wicklungskanal entweicht. Dieser Ventilator wird zweckmäßig behufs Regelung seiner Umlaufsgeschwindigkeit mit dem Schalter des Lasthebemagneten in der Weise vereinigt, daß mit wachsender Erregung des Magneten auch die Kühlwirkung des Ventilators gesteigert und damit eine erhebliche Erhöhung der Tragfähigkeit des Magneten erzielt werden kann. Infolgedessen kommt auch das Eigengewicht des Magneten weniger in Betracht.According to the present invention, effective and reliable cooling is thereby achieved achieved that, as indicated in the drawing, by a built-in lifting magnet electrically operated fan an air flow is passed through ducts in such a way that that the air flow sweeps past the windings, which are divided into several layers and escapes from the winding channel after its effect as a cooler. This fan is useful for regulation its rotational speed is combined with the switch of the lifting magnet in such a way that that with increasing excitation of the magnet, the cooling effect of the fan increases and thus a considerable increase the load capacity of the magnet can be achieved. As a result, the dead weight also comes of the magnet is less of a consideration.

In der Zeichnung bedeutet: m das Magnetgehäuse, in welchem die in wasserdichten Metallkästen eingebauten Spulen s liegen, zwischen denen sich die Luftkanäle c befinden, durch welche der Kühlstrom direkt hindurchstreichen soll. Der Luftzug wird vom Ventilator a, b erzeugt.In the drawing: m means the magnet housing, in which the coils s built into watertight metal boxes are located, between which the air ducts c are located, through which the cooling flow is to pass directly. The draft is generated by the fan a, b .

Claims (1)

Pate nt-Anspruch :Sponsorship claim: Lasthebemagnet, dadurch gekennzeichnet, daß die unter Bildung von Luftkanälen unterteilte Wicklung durch einen Luftstrom gekühlt wird, welcher von einem am Magnetkörper angeordneten, elektrisch betriebenen Ventilator erzeugt wird.Lifting magnet, characterized in that the formation of air channels subdivided winding is cooled by an air flow, which is generated by a on the magnet body arranged, electrically operated fan is generated. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT275002D Active DE275002C (en)

Publications (1)

Publication Number Publication Date
DE275002C true DE275002C (en)

Family

ID=531321

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT275002D Active DE275002C (en)

Country Status (1)

Country Link
DE (1) DE275002C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056071A (en) * 1959-02-12 1962-09-25 William R Baker Electrical coil structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056071A (en) * 1959-02-12 1962-09-25 William R Baker Electrical coil structure

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