Dynamo electric machines and stators for use in same

Details Dynamo electric machines and stators for use in same Dynamo electric machines and stators for use in same

H - Electricity

02

K

H02K 1/02 (2006.01) F04D 13/06 (2006.01) F04D 25/06 (2006.01) H02K 5/128 (2006.01) H02K 21/24 (2006.01) H02K 29/00 (2006.01)

Patent

CA 2299721

Dynamo electric machines and stators for use in such machines are provided. The stators comprise plates configured to be substantilly flat and a plurality of spaced apart projections or teeth extending away from the plate and, together with the plate, defining a plurality of slots therebetween. The stators comprise masses of metal particles. Using stators made from such metal particles provides enhanced machine efficiency, which is believed to be because of reduced eddy current effects in the stator. Motors including rotors having generally flat arrays of permanent magnetic poles and such stators which are spaced apart from and generally facing the permanent magnetic poles and have a plurality of magnetic windings, and pumps powered by such motors are included within the scope of the present invention.

L'invention concerne des machines dynamoélectriques et des stators destinés à être utilisés dans ces machines. Ces stators sont constitués de plaques sensiblement plates, et de plusieurs saillies ou dents espacées, qui s'étendent à l'opposé de la plaque tout en définissant plusieurs fentes entre elles et cette plaque. Ces stators renferment en outre des masses de particules métalliques. L'utilisation de stators fabriqués à partir de telles particules métalliques permet d'obtenir un meilleur rendement des machines, grâce à une diminution des effets dus au courant de Foucault dans le stator. L'invention concerne également: des moteurs comprenant des rotors pourvus d'ensembles généralement plats de pôles magnétiques permanents; des stators espacés des pôles magnétiques permanents et faisant face à ceux-ci, ces stators présentant par ailleurs des enroulements magnétiques; et des pompes alimentées par de tels moteurs.

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