DE495266C - Cooling device for high-performance, high-speed electrical machines with a turbo runner designed as an air mover, in which the cooling air is supplied separately to the rotor and the rest of the machine interior - Google Patents
Cooling device for high-performance, high-speed electrical machines with a turbo runner designed as an air mover, in which the cooling air is supplied separately to the rotor and the rest of the machine interiorInfo
- Publication number
- DE495266C DE495266C DEA53463D DEA0053463D DE495266C DE 495266 C DE495266 C DE 495266C DE A53463 D DEA53463 D DE A53463D DE A0053463 D DEA0053463 D DE A0053463D DE 495266 C DE495266 C DE 495266C
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- air
- rest
- cooling
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Description
Kühleinrichtung für rasch laufende elektrische Maschinen großer Leistung mit als Luftbeweger ausgebildetem Turboläufer, bei der die Kühlluft dem Rotor und dem übrigen Maschineninnern getrennt zugeführt wird Die Erfindung bezieht sich auf eine Einrichtung zur Kühlung von rasch laufenden elektrischen Maschinen großer Leistung mit als Luftbeweger ausgebildetem Rotor von relativ kleinem Durchmesser. Bei derartigen Maschinen ist es schwierig bzw. unmöglich, die erforderliche Kühlluftmenge in den Rotor hineinzudrücken, da die Ventilationswirkung der in die Luftschlitze des Rotors eingesetzten Distanzstege den herrschenden Luftwiderstand (namentlich großen Eintrittswiderstand) nicht zu überwinden vermag.Cooling device for high-performance, high-speed electrical machines with a turbo runner designed as an air mover, in which the cooling air flows to the rotor and is fed separately to the rest of the machine interior. The invention relates to a device for cooling high-speed, high-performance electrical machines with a rotor designed as an air mover with a relatively small diameter. With such It is difficult or impossible to get the required amount of cooling air into the machines Push the rotor in, because the ventilation effect of the in the louvers of the rotor used spacer bars the prevailing air resistance (namely high entry resistance) unable to overcome.
Um die Kühlluft dem Rotor und dem übrigen Maschineninnern getrennt zuzuführen, ist es bekannt, Doppelventilatoren zu verwenden. Es ist ferner eine Kühleinrichtung unter Verwendung von zwei gesonderten Luftbewegern für die getrennten Kühlwege bekannt, von denen der eine ein Druckventilator und der andere ein Saugventilator ist, und wobei der erstere an seinem Umfang angezapft ist, um Kühlluft für den zweiten Kühlmittelweg und den Saugventilator zu schaffen.The rotor and the rest of the machine interior are separated by the cooling air feed, it is known to use double fans. It is also a Cooling device using two separate air movers for the separate ones Cooling paths known, one of which is a pressure fan and the other a suction fan is, and the former is tapped on its periphery to provide cooling air for the second To create the coolant path and the suction fan.
Diese Anzapfung bringt den großen Nachteil mit sich, daß der Ventilator für keinen der beiden Kühlmittelwege voll ausgenutzt wird, der Ventilator besitzt also einen sehr schlechten Wirkungsgrad. Gemäß der Erfindung wird dieser Nachteil dadurch vermieden, daß die Kühlluft sowohl dem Rotor als auch dem übrigen Maschineninnern durch einen in an sich bekannter Weise axial unterteilten Doppelventilator zugeführt wird, der auf seinem gesamten Umfang beide Kühlmittelwege dadurch gleichmäßig speist, daß der eine Teil des Ventilators sich frei nach dem Statorinnern öffnet, während der andere Teil des Ventilators in einen als Rotationskörper ausgebildeten Sammelbehälter einmündet, an den die feststehenden, radial nach der Welle zu verlaufenden und zwischen Ventilator und Rotor angebrachten Führungskanäle angeschlossen sind.This tap has the major disadvantage that the fan is not fully used for either of the two coolant paths, the fan has so a very poor efficiency. According to the invention, this disadvantage becomes thereby avoided that the cooling air both the rotor and the rest of the machine interior supplied by a double fan axially subdivided in a manner known per se which feeds both coolant paths evenly over its entire circumference, that one part of the fan opens freely to the inside of the stator, while the other part of the fan in a collecting container designed as a rotating body opens, to which the stationary, radially to the shaft to extend and between Fan and rotor attached guide channels are connected.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung in Abb. r im Längsschnitt dargestellt; Abb. 2 zeigt einen Schnitt durch den als Rotationskörper ausgebildeten Sammelbehälter nach der Linie A-B.In the drawing, an embodiment of the invention is shown in Fig. r shown in longitudinal section; Fig. 2 shows a section through the body of revolution trained collecting container after the line A-B.
Der als Luftbeweger dienende Rotor a ist mit Schlitzen b versehen, in die in bekannter Weise eine Ventilatorwirkung hervorrufende Distanzstege eingesetzt sind. Innerhalb des Maschinengehäuses c ist auf der Welle d ein Ventilator e angeordnet, der über die Luftführungskanäle f Kühlluft in der Pfeilrichtung in die axialen Kanäle g und von da in die Luftschlitze b des Rotors a drückt. Die Belüftung des übrigen Maschineninnern erfolgt getrennt davon, indem der Ventilator e mit einem zweiten Flügelsatz versehen ist, der die Kühlluft auf einem von dem Luftweg zum Rotor getrennten Wege in das Maschineninnere fördert. Zur Unterstützung der Luftzufuhr in das Maschineninnere können in das Maschineninnere ausmündende Durchbrechungen k in dem Luftführungskanal zum Rotor angebracht werden. Die Belüftung der Maschine kann von beiden Lagerseiten her erfolgen.Serving as an air mover rotor a is provided with slots b, into which a fan effect causing spacer webs are inserted in a known manner. Inside the machine housing c, a fan e is arranged on the shaft d which, via the air ducts f , presses cooling air in the direction of the arrow into the axial ducts g and from there into the air slots b of the rotor a. The ventilation of the rest of the inside of the machine takes place separately, in that the fan e is provided with a second set of blades which conveys the cooling air into the inside of the machine on a path that is separate from the air path to the rotor. To support the air supply into the interior of the machine, openings k opening into the interior of the machine can be made in the air duct to the rotor. The machine can be ventilated from both sides of the bearing.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA53463D DE495266C (en) | 1928-03-03 | 1928-03-03 | Cooling device for high-performance, high-speed electrical machines with a turbo runner designed as an air mover, in which the cooling air is supplied separately to the rotor and the rest of the machine interior |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA53463D DE495266C (en) | 1928-03-03 | 1928-03-03 | Cooling device for high-performance, high-speed electrical machines with a turbo runner designed as an air mover, in which the cooling air is supplied separately to the rotor and the rest of the machine interior |
Publications (1)
Publication Number | Publication Date |
---|---|
DE495266C true DE495266C (en) | 1930-04-04 |
Family
ID=6938987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA53463D Expired DE495266C (en) | 1928-03-03 | 1928-03-03 | Cooling device for high-performance, high-speed electrical machines with a turbo runner designed as an air mover, in which the cooling air is supplied separately to the rotor and the rest of the machine interior |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE495266C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE925596C (en) * | 1942-09-10 | 1955-03-24 | Siemens Ag | Fan arrangement for electrical machines |
DE951463C (en) * | 1942-04-28 | 1956-10-31 | Siemens Ag | Cooling of electrical machines |
DE1026843B (en) * | 1953-12-22 | 1958-03-27 | Siemens Ag | Ventilation arrangement of a homopolar machine with gear runner |
DE1094353B (en) * | 1958-01-07 | 1960-12-08 | Westinghouse Electric Corp | Ventilation device for an electrical machine |
-
1928
- 1928-03-03 DE DEA53463D patent/DE495266C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE951463C (en) * | 1942-04-28 | 1956-10-31 | Siemens Ag | Cooling of electrical machines |
DE925596C (en) * | 1942-09-10 | 1955-03-24 | Siemens Ag | Fan arrangement for electrical machines |
DE1026843B (en) * | 1953-12-22 | 1958-03-27 | Siemens Ag | Ventilation arrangement of a homopolar machine with gear runner |
DE1094353B (en) * | 1958-01-07 | 1960-12-08 | Westinghouse Electric Corp | Ventilation device for an electrical machine |
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