Device for cooling an electrical machine and electrical...

Details Device for cooling an electrical machine and electrical... Device for cooling an electrical machine and electrical...

2011-05-31

2011-05-31

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S061000

Reexamination Certificate

active

07952243

ABSTRACT:
The invention relates to a device (1) for cooling an electrical machine, in particular an electric motor, the electrical machine having a stator (3) with a stator core (31) and a rotor (4) having a rotor core (41) resting on a rotor shaft (5). Coil windings with axially protruding winding heads (6) are introduced in the stator core (31). According to the invention, the device has at least one cap ring (7) which can be cooled and through which the rotor shaft (5) is guided, the cap ring (7) which can be cooled taking up at least part of an annular intermediate space (ZR) which is in the axial region (BW) of a protruding winding head (6) and the rotor shaft (5). The invention relates to an electrical machine, in particular an asynchronous or synchronous motor, having such a cooling device.

REFERENCES:
patent: 2648018 (1953-08-01), Meier
patent: 3151262 (1964-09-01), Howard et al.
patent: 3829720 (1974-08-01), Swanke et al.
patent: 7102267 (2006-09-01), Gromoll et al.
patent: 7154201 (2006-12-01), Kuhn
patent: 2001/0031214 (2001-10-01), Haavik
patent: 2005/0194847 (2005-09-01), Gromoll et al.
patent: 102 44 428 (2004-06-01), None
patent: 103 42 791 (2005-04-01), None
patent: 2 859 836 (2005-03-01), None
patent: WO 2004/030183 (2004-04-01), None

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