DE951651C - Air- and liquid-cooled electric motor with short-circuit rotor and a starting resistor assembled with the winding for frequent switching on - Google Patents
Air- and liquid-cooled electric motor with short-circuit rotor and a starting resistor assembled with the winding for frequent switching onInfo
- Publication number
- DE951651C DE951651C DES40065A DES0040065A DE951651C DE 951651 C DE951651 C DE 951651C DE S40065 A DES40065 A DE S40065A DE S0040065 A DES0040065 A DE S0040065A DE 951651 C DE951651 C DE 951651C
- Authority
- DE
- Germany
- Prior art keywords
- electric motor
- short
- starting resistor
- motor according
- liquid
- 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
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Description
Die Erfindung-- bezieht sich auf einen luft- und flüssigkeitsgekühlten Elektromotor mit Kurzschlußläufer und einem mit der Wicklung zusammengebauten Anlaßwiderstand für häufiges Einschalten, insbesondere für den Antrieb von Zuckerzentrifugen. Bei einem bekannten derartigen Elektromotor zum Antrieb einer 'Schleudermaschine, die zum Aus--scheiden von Flüssigkeit aus dem Schleudergut dient, wird sowohl der Ständer als auch der Läufer des Motors durch die aus der 'Schleudertrommel anfallende Flüssigkeit . gekühlt, wobei die Kühlflüssigkeit durch besondere axiale Kanäle im Läuferblechpaket fließt.The invention - relates to an air and liquid cooled Electric motor with squirrel cage rotor and a starting resistor assembled with the winding for frequent switching on, especially for driving sugar centrifuges. at a known such electric motor for driving a 'centrifugal machine that is used to separate liquid from the material to be centrifuged, both the stand as well as the rotor of the motor by the liquid from the 'centrifugal drum . cooled, the cooling liquid through special axial channels in the rotor core flows.
Die Erfindung hat die Aufgabe, den Motor mit einer Kühleinrichtung zu versehen, die eine noch wirksamere Abführung der Läuferverluste gewährleistet. Erfindungsgemäß besteht der Anlaßwiderstand aus von der Flüssigkeit durichströrriten Rohren. t In der Zeichnung ist ein Ausführungsbeispiel dargestellt. 'Sie zeigt einen Elektromotor für den Antrieb einer Zuckerzentrifuge im. Längsschnitt. Das 'Ständergehäuse i ist in bekannter Weise für den Anschluß an eine Flüssigkeitsleitung doppelwandig ausgeführt und liegt unmittelbar an dem 'Ständerblac4paket2 an. Das Läuferblechpaket 3 sitzt auf der Hohlwelle 4, die aus dem. rohrförmigen Teil 5, dem den Hohlraum 6 abschließenden Antriebsteil 7 und dein. mit einer Bohrung 8 .versehenen Zuführungsteil. 9 besteht, die miteinander verschweißt sind. In den Hohlraum 8 ragt ein Anschlußstück i o hinein, das an eine nicht dargestellte Zuflnßleitung für die Kühlsüssigkeit angeschlossen ist. In den Hohlraum 6 der Welle münden auf der Antriebsseite Rohre i i, die den Anlaßwiderstand bilden und mit den Läuferstäben 12 verschweißt sind. Die Enden 13 der Rohre sind nach unten gebogen und münden in einen Raum 14, der von dem Lagerschild 15 und einer die Ständerwickelköpfe 16 abdeckenden Blechverkleidung 17 gebildet ist. Auf der oberen Maschinenseite ist eia Lüfter 18 angeordnet, der die durch die obere Gehäuseöffnung i9 eintretende Kühlluft gegen die Ständerwickelköpfe 2o zu den axialen -Luftkanälen 21 im. 'Ständerblechpaket 2 drückt. Von dort aus strömt die Kühlluft durch die Öffnung 22 ins Freie.The invention has the task of providing the motor with a cooling device which ensures an even more effective dissipation of the rotor losses. According to the invention, the starting resistor consists of tubes permeated by the liquid. An exemplary embodiment is shown in the drawing. 'It shows an electric motor for driving a sugar centrifuge in the. Longitudinal section. The 'stator housing i is double-walled in a known manner for connection to a liquid line and rests directly on the' Ständerblac4paket2. The laminated rotor core 3 sits on the hollow shaft 4, which consists of the. tubular part 5, the drive part 7 terminating the cavity 6 and your. with a hole 8 .provided feed part. 9, which are welded together. A connector 10 protrudes into the cavity 8 and is connected to an inflow line, not shown, for the cooling liquid. Pipes ii, which form the starting resistor and are welded to the rotor bars 12, open into the cavity 6 of the shaft on the drive side. The ends 13 of the tubes are bent downwards and open into a space 14 which is formed by the end shield 1 5 and a sheet metal cladding 17 covering the stator winding heads 1 6. A fan 18 is arranged on the upper side of the machine, which directs the cooling air entering through the upper housing opening i9 against the stator winding heads 2o to the axial air ducts 21 im. '' Stator core 2 presses. From there, the cooling air flows through the opening 22 into the open.
Im dargestellten Ausführungsbeispiel bildet der Antriebsteil 7 der Welle gleichzeitig den Kurzschlußring. Es kann aber auch. ein besonderer, auf der Welle sitzender Kurzschlußring vorgesehen werden.In the illustrated embodiment, the drive part 7 forms the Wave the short-circuit ring at the same time. But it can also. a special one on the Shaft seated short-circuit ring are provided.
Dadurch, daß die Anlaßwiderstände selbst als Kanäle für die Kühlflüssigkeit ausgebildet sind, wird eine sehr - intensive Kühlung erzielt.Because the starting resistors themselves act as channels for the cooling liquid are formed, a very intensive cooling is achieved.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES40065A DE951651C (en) | 1954-07-18 | 1954-07-18 | Air- and liquid-cooled electric motor with short-circuit rotor and a starting resistor assembled with the winding for frequent switching on |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES40065A DE951651C (en) | 1954-07-18 | 1954-07-18 | Air- and liquid-cooled electric motor with short-circuit rotor and a starting resistor assembled with the winding for frequent switching on |
Publications (1)
Publication Number | Publication Date |
---|---|
DE951651C true DE951651C (en) | 1956-10-31 |
Family
ID=7483517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES40065A Expired DE951651C (en) | 1954-07-18 | 1954-07-18 | Air- and liquid-cooled electric motor with short-circuit rotor and a starting resistor assembled with the winding for frequent switching on |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE951651C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2107547A5 (en) * | 1970-09-10 | 1972-05-05 | Westinghouse Electric Corp |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE570729C (en) * | 1929-06-07 | 1933-02-20 | Siemens Schuckertwerke Akt Ges | Extractor driven by an electric motor |
DE587814C (en) * | 1929-12-14 | 1933-11-10 | Siemens Schuckertwerke Akt Ges | Electric centrifugal machine with motor cooling air flowing through between the drum and the bottom of the housing |
DE589440C (en) * | 1933-12-09 | Siemens Schuckertwerke Akt Ges | Centrifuge with electric single drive |
-
1954
- 1954-07-18 DE DES40065A patent/DE951651C/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE589440C (en) * | 1933-12-09 | Siemens Schuckertwerke Akt Ges | Centrifuge with electric single drive | |
DE570729C (en) * | 1929-06-07 | 1933-02-20 | Siemens Schuckertwerke Akt Ges | Extractor driven by an electric motor |
DE587814C (en) * | 1929-12-14 | 1933-11-10 | Siemens Schuckertwerke Akt Ges | Electric centrifugal machine with motor cooling air flowing through between the drum and the bottom of the housing |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2107547A5 (en) * | 1970-09-10 | 1972-05-05 | Westinghouse Electric Corp |
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