DE515766C - Ventilation device for closed electrical machines, in which the cooling air is supplied to the inside of the machine by one or more centrifugal fans - Google Patents
Ventilation device for closed electrical machines, in which the cooling air is supplied to the inside of the machine by one or more centrifugal fansInfo
- Publication number
- DE515766C DE515766C DES89337D DES0089337D DE515766C DE 515766 C DE515766 C DE 515766C DE S89337 D DES89337 D DE S89337D DE S0089337 D DES0089337 D DE S0089337D DE 515766 C DE515766 C DE 515766C
- Authority
- DE
- Germany
- Prior art keywords
- cooling air
- machine
- ventilation device
- electrical machines
- supplied
- 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
Links
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
- H02K9/06—Arrangements 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Description
Es ist bekannt, dem Innern von elektrischen Maschinen Kühlluft durch Fliehkraftlüfter zuzuführen. Diese Belüftungsart hat aber in vielen Fällen den Nachteil, daß dem Läufer nicht genügend Kühlluft zugeführt wird. Um diesen Nachteil zu beseitigen, hat man als Lüfter sogenannte Axiallüfter verwendet, die eine gute Belüftung des Läufers sichern. Diese Axiallüfter genügen aber nicht in allen Fällen zurIt is known to supply cooling air to the interior of electrical machines by means of centrifugal fans. However, in many cases this type of ventilation has the disadvantage that the runner does not sufficient cooling air is supplied. In order to eliminate this disadvantage, so-called fans are used Axial fans are used to ensure good ventilation of the rotor. These axial fans but are not sufficient in all cases
ίο Belüftung des gesamten Maschineninnern, insbesondere dann nicht, wenn der Widerstand, der dem Kühlluftstrom entgegenwirkt, durch Kanäle, Filter und Rückkühler erheblich gesteigert wird. Dieser Nachteil soll nun nach der Erfindung dadurch behoben werden, daß die beiden Belüftungsarten derart miteinander kombiniert werden, daß zunächst dem Maschineninnern Kühlluft durch einen Fliehkraftlüfter zugeführt wird, der einen starken Druck für das ganze Innere der Maschine sichert, und daß ein Teil der von diesem Lüfter geförderten Luft mit Hilfe eines Axiallüfters dem Läufer in axialer Richtung zugeführt wird, so daß auch eine ausreichende Belüftung des Läufers gesichert ist.ίο Ventilation of the entire inside of the machine, in particular then not, if the resistance that counteracts the cooling air flow through channels, Filter and dry cooler is increased significantly. This disadvantage is now intended by the invention be remedied that the two types of ventilation are combined with one another in such a way that first the inside of the machine Cooling air is supplied by a centrifugal fan, which creates a strong pressure for the whole Inside the machine ensures, and that part of the air conveyed by this fan with the help an axial fan is fed to the rotor in the axial direction, so that a sufficient Ventilation of the runner is ensured.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung veranschaulicht. Diese zeigt eine elektrische Maschine mit einem Ständerblechpaket s, in das eine Wicklung w eingebettet ist, und mit einem als Polrad ausgebildeten Läufer f. An embodiment of the invention is illustrated in the drawing. This shows an electrical machine with a stator core s, in which a winding w is embedded, and with a rotor f designed as a pole wheel.
Ferner ist ein Gehäuse g vorgesehen, das das Innere der Maschine gegen die Außenluft abschließt, sowie ein Zuführungskanal ζ und ein Abführungskanal α für die Kühlluft. Nach der Erfindung ist nun an der Eintrittsstelle der Kühlluft in das Gehäuse ein Fliehkraftlüfter ν vorgesehen und neben diesem, innerhalb des Gehäuses, noch ein Axiallüfter b. Beide Lüfter sitzen auf der Welle e. Der Fliehkraftlüfter ν sorgt für den nötigen Luftdruck in dem Gehäuse, so daß genügend Luft auch gegen die Widerstände in dem Zuführungskanal ζ und dem Abführungskanal α gefördert werden kann, insbesondere wenn diese Kanäle im Kreislauf geschlossen sind und zur Reinigung der Luft noch Filter und zur Rückkühlung noch besondere Rückkühler vorgesehen sind.Furthermore, a housing g is provided which closes the inside of the machine from the outside air, as well as a supply channel ζ and a discharge channel α for the cooling air. According to the invention, a centrifugal fan ν is provided at the point of entry of the cooling air into the housing and, in addition to this, within the housing, an axial fan b. Both fans sit on shaft e. The centrifugal fan ν ensures the necessary air pressure in the housing, so that enough air can also be conveyed against the resistances in the supply channel ζ and the discharge channel α , especially when these channels are closed in the circuit and filters for cleaning the air and for recooling special dry coolers are also provided.
Die Zeichnung zeigt auch noch Leitschaufeln t zwischen den beiden Lüftern. Durch diese Schaufehl wird vermieden, daß die Wirkung der Lüfter durch Rotation der zwischen ihnen strömenden Luft herabgesetzt wird.The drawing also shows guide vanes t between the two fans. This Schaufehl avoids that the effect of the fan is reduced by the rotation of the air flowing between them.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES89337D DE515766C (en) | Ventilation device for closed electrical machines, in which the cooling air is supplied to the inside of the machine by one or more centrifugal fans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES89337D DE515766C (en) | Ventilation device for closed electrical machines, in which the cooling air is supplied to the inside of the machine by one or more centrifugal fans |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE515766C true DE515766C (en) | 1931-01-12 |
Family
ID=7515051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES89337D Expired DE515766C (en) | Ventilation device for closed electrical machines, in which the cooling air is supplied to the inside of the machine by one or more centrifugal fans |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE515766C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604501A (en) * | 1951-05-15 | 1952-07-22 | Gen Electric | Dynamoelectric machine |
| US2690513A (en) * | 1952-01-02 | 1954-09-28 | Hoover Co | Motor cooling system |
| DE1013771B (en) * | 1951-09-28 | 1957-08-14 | Westinghouse Electric Corp | Gas-cooled dynamo-electric machine |
| DE1047927B (en) * | 1952-06-13 | 1958-12-31 | Siemens Ag | Encapsulated, surface-cooled electrical machine with high performance and high speed |
| DE1052546B (en) * | 1953-05-29 | 1959-03-12 | Siemens Ag | Cooling air duct for electrical machines with pronounced inner poles |
| DE1097545B (en) * | 1955-02-04 | 1961-01-19 | Westinghouse Electric Corp | Tail unit arrangement in front of the suction fan of a self-ventilated electrical machine |
| 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) |
-
0
- DE DES89337D patent/DE515766C/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604501A (en) * | 1951-05-15 | 1952-07-22 | Gen Electric | Dynamoelectric machine |
| DE1013771B (en) * | 1951-09-28 | 1957-08-14 | Westinghouse Electric Corp | Gas-cooled dynamo-electric machine |
| US2690513A (en) * | 1952-01-02 | 1954-09-28 | Hoover Co | Motor cooling system |
| DE1047927B (en) * | 1952-06-13 | 1958-12-31 | Siemens Ag | Encapsulated, surface-cooled electrical machine with high performance and high speed |
| DE1052546B (en) * | 1953-05-29 | 1959-03-12 | Siemens Ag | Cooling air duct for electrical machines with pronounced inner poles |
| DE1097545B (en) * | 1955-02-04 | 1961-01-19 | Westinghouse Electric Corp | Tail unit arrangement in front of the suction fan of a self-ventilated electrical machine |
| 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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