DE475433C - Cooling device for completely encapsulated electrical machines with an annular distribution space provided on one side of the machine housing, directly connected to it and continuously fed with a coolant from an external source - Google Patents

Cooling device for completely encapsulated electrical machines with an annular distribution space provided on one side of the machine housing, directly connected to it and continuously fed with a coolant from an external source

Info

Publication number
DE475433C
DE475433C DEA43877D DEA0043877D DE475433C DE 475433 C DE475433 C DE 475433C DE A43877 D DEA43877 D DE A43877D DE A0043877 D DEA0043877 D DE A0043877D DE 475433 C DE475433 C DE 475433C
Authority
DE
Germany
Prior art keywords
coolant
distribution space
cooling device
external source
directly connected
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
DEA43877D
Other languages
German (de)
Inventor
Alois Doerfel
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
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 AEG AG filed Critical AEG AG
Priority to DEA43877D priority Critical patent/DE475433C/en
Application granted granted Critical
Publication of DE475433C publication Critical patent/DE475433C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/02Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

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

Description

Kühleinrichtung für vollkommen gekapselte elektrische Maschinen mit an einer Seite des Maschinengehäuses vorgesehenem, mit diesem unmittelbar verbundenem und von einer fremden Quelle ununterbrochen mit einem Kühlmittel gespeistem ringförmigen Verteilungsraum Die Anforderungen, die an die Antriebsmotoren in angestrengt arbeitenden Massenbewegungsbetrieben gestellt werden, sind heute außerordentlich hoch. Für die Motoren ergeben sich insbesondere dadurch ungünstige Betriebsbedingungen, daß sie vollkommen geschlossen sein und in der Stunde zuweilen mehrere hundertmal umgesteuert werden müssen. Um eine Überlastbarkeit der Motoren zu sichern und dabei die zulässige Erwärmungsgrenze nicht zu überschreiten, ist man in Ermangelung einer ausreichenden Kühlung daher gezwungen, meist größere und schwerere Motoren zu verwenden, als eigentlich notwendig wäre. Diese Maßnahme ist aber sehr nachteilig, weil man dabei größere und schwerere Motoren gerade in solchen Betrieben verwenden muß, in denen man sie wegen ihres zu hohen Schwungmomentes zu vermeiden sucht. Überdies entstehen durch Verwendung größerer Motoren natürlich erhöhte Anschaffungs-, Betriebs-und Unterhaltungskosten. Um diese Nachteile zu vermeiden, wird eine besonders wirksame Art der Kühlung vorgeschlagen, die den gestellten Anforderungen in vollkommenster Weise genügt, so daß man mit kleineren Nennleistungen und demnach mit kleineren Motoren auskommen kann.Cooling device for completely enclosed electrical machines with provided on one side of the machine housing and directly connected to it and annularly fed with coolant continuously from an external source Distribution space The demands placed on the drive motors in hard working Enterprises of mass movement are now extremely high. For the Motors result in particular from unfavorable operating conditions that they be completely closed and sometimes reversed several hundred times an hour Need to become. In order to ensure that the motors can be overloaded and that the permissible Not to exceed the heating limit, one is in the absence of a sufficient Cooling therefore forced to use mostly larger and heavier motors than actually would be necessary. However, this measure is very disadvantageous because it is larger and heavier engines have to be used in those factories where they are used tries to avoid because of their too high moment of inertia. In addition, arise through Using larger engines naturally increases acquisition, operating and maintenance costs. In order to avoid these disadvantages, a particularly effective type of cooling is proposed, which meets the requirements in the most perfect way, so that one with smaller rated powers and therefore can get by with smaller motors.

Es ist an einer Seite des Gehäuses der zu kühlenden Maschine ein ringförmiger Raum vorgesehen, von dem erfindungsgemäß sowohl Kühlkanäle durch das Innere der Maschine in axialer Richtung führen, so daß der in bekannter Weise in Kreislauf gebrachte Innenluftstrom der Maschine an diesen Kühlrohren abgekühlt wird, als auch Düsen angebracht sind, die einen Teil des Kühlmittels an der äußeren Gehäusewand entlang führen und so eine weitere Abkühlungsmöglichkeit schaffen. Diese Außenkühlung ist in Zusammenwirkung mit der inneren Kühlung von besonderer Wichtigkeit, weil die Gehäuseoberfläche ein Mehrfaches der Kühlrohroberfläche ausmacht. Das Kühlmittel wird in an sich bekannter Weise dem Verteilungsraum von einer fremden Quelle, etwa einem besonders angetriebenen Gebläse, einer Preßluftlei:tung o. dgl., zugeführt. Von besonderer Bedeutung ist der Umstand, daß das Kühlmittel ohne Unterbrechung zuströmt, damit auch während der Betriebspausen eine fortlaufende Abkühlung erzielt wird. Der Verteilungsraum wird zweckmäßig durch Trennwände in einzelne Räume unterteilt, um die Ströme zu regeln und Wirbel zu vermeiden.It is a ring-shaped one on one side of the housing of the machine to be cooled Space is provided from which, according to the invention, both cooling channels through the interior of the Machine run in the axial direction, so that the circuit in a known manner The internal air flow brought by the machine is cooled on these cooling tubes as well Nozzles are attached, the part of the coolant on the outer housing wall lead along and create another opportunity to cool off. This external cooling is of particular importance in conjunction with internal cooling because the surface of the housing is a multiple of the surface of the cooling tube. The coolant is in a known manner the distribution space from an external source, for example a specially driven fan, a Preßluftlei: device o. The like., Supplied. Of particular importance is the fact that the coolant is uninterrupted flows in so that continuous cooling is achieved even during breaks in operation will. The distribution space is expediently divided into individual partitions Spaces divided to regulate the currents and avoid eddies.

Die Zeichnung veranschaulicht in einem Ausführungsbeispiel den Gegenstand der Erfindung. Es bedeutet hier a den Verteilungsraum für das Kühlmittel, in den die durch das Innere der Maschine führenden Kühlrohre b münden. An dem äußeren Umfang des Verteilers sind Düsen c angebracht, mittels deren das Kühlmittel über die Gehäuseoberfläche, die auch mit Kühlrippen versehen sein kann, geleitet wird. Die Kühlkanäle können runden Querschnitt besitzen, wie in der Abb. 2 angedeutet, sie können aber auch entsprechend dem im Inneren der Maschine zur Verfügung stehenden Raum jeden anderen Querschnitt haben, wodurch sich in vielen Fällen eine Vergrößerung der wirksamen Kühlfläche erreichen läßt. Eine solche Anordnung ist z. B. in der Abb. 3 gezeigt, in der die zwischen den Feldpolen der Maschine untergebrachten Kühlkanäle dreieckigen Querschnitt haben und mit dem Gehäuse metallisch verbunden sein und Kühlrippen k besitzen können, die fast bis an den Anker reichen. Der Verteilungsraum a wird von einem besonderen Ventilator d mit den erforderlichen Kühlmittelmengen gespeist, er kann aber auch unmittelbar an eine Preßluftleitung oder an eine ein anderes Kühlmittel führende Leitung angeschlossen sein.The drawing illustrates the subject matter in one embodiment the invention. It means here a the distribution space for the coolant into the the cooling tubes b open through the interior of the machine. On the outer perimeter of the distributor are attached nozzles c, by means of which the coolant over the housing surface, which can also be provided with cooling fins, is conducted. The cooling channels can have round cross-section, as indicated in Fig. 2, but they can also each other depending on the space available inside the machine Cross-section, which in many cases increases the effective Can reach cooling surface. Such an arrangement is e.g. B. shown in Fig. 3, in which the cooling channels accommodated between the field poles of the machine are triangular Have cross-section and be metallically connected to the housing and cooling fins k can own that almost reach the anchor. The distribution space a is determined by a special fan d fed with the required quantities of coolant, but it can also be connected directly to a compressed air line or to another coolant leading line must be connected.

Wie aus der Abb. 2 ersichtlich, ist der Verteilungsraum durch Trennwände e in zwei halbringförmige Teile getrennt, um Wirbel zu vermeiden und eine gleichmäßige Versorgung allen Kanäle mit dem Kühlmittel zu erzielen.As can be seen from Fig. 2, the distribution space is through partition walls e separated into two semicircular parts in order to avoid eddies and an even To achieve supply of all channels with the coolant.

Claims (2)

PATETANSPRÜCHE: I. Kuhleinrichtung für vollkommen gekapselte elektrische Maschinen mit an einer Seite des Maschinengehäuses vorgesehenem, mit diesem unmittelbar verbundenem und von einer fremden Quelle ununterbrochen mit einem Kühlmittel gespeistem ringförmigen Verteilungsraum, dadurch gekennzeichnet, daß dieser Raum sowohl mit durch das Innere der Maschine in axialer Richtung führenden Kühlrohren verbunden als auch mit düsenartig ausgebildeten Öffnungen versehen ist, die einen Teil des Kühlmittels an der äußeren Gehäuseoberfläche der Maschine entlang führen. CLAIMS: I. Cooling device for completely encapsulated electrical Machines with provided on one side of the machine housing, with this directly connected and continuously fed with a coolant from an external source annular distribution space, characterized in that this space has both connected through the interior of the machine in the axial direction leading cooling tubes and is provided with nozzle-like openings that form part of the Guide the coolant along the outer surface of the housing of the machine. 2. Kühleinrichtung nach Anspruch r, dadurch gekennzeichnet, daß der Verteilungsraum zur Regelung der Kühlmittelzuführung und Vermeidung von Wirbelbildung unterteilt ist.2. Cooling device according to claim r, characterized in that the distribution space for regulating the Coolant supply and avoidance of vortex formation is divided.
DEA43877D 1925-01-08 1925-01-08 Cooling device for completely encapsulated electrical machines with an annular distribution space provided on one side of the machine housing, directly connected to it and continuously fed with a coolant from an external source Expired DE475433C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA43877D DE475433C (en) 1925-01-08 1925-01-08 Cooling device for completely encapsulated electrical machines with an annular distribution space provided on one side of the machine housing, directly connected to it and continuously fed with a coolant from an external source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA43877D DE475433C (en) 1925-01-08 1925-01-08 Cooling device for completely encapsulated electrical machines with an annular distribution space provided on one side of the machine housing, directly connected to it and continuously fed with a coolant from an external source

Publications (1)

Publication Number Publication Date
DE475433C true DE475433C (en) 1929-04-27

Family

ID=6933883

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA43877D Expired DE475433C (en) 1925-01-08 1925-01-08 Cooling device for completely encapsulated electrical machines with an annular distribution space provided on one side of the machine housing, directly connected to it and continuously fed with a coolant from an external source

Country Status (1)

Country Link
DE (1) DE475433C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2367371A1 (en) * 1976-10-06 1978-05-05 Skf Ab ELECTRIC MOTOR FOR DISHWASHING MACHINE OR OTHER SIMILAR MACHINE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2367371A1 (en) * 1976-10-06 1978-05-05 Skf Ab ELECTRIC MOTOR FOR DISHWASHING MACHINE OR OTHER SIMILAR MACHINE

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