High efficiency motor for low velocity, high volume fan and...

H - Electricity – 02 – K

Patent

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H02K 23/40 (2006.01) A47L 5/22 (2006.01) A47L 11/14 (2006.01) H02K 5/24 (2006.01) H02K 7/14 (2006.01)

Patent

CA 2386469

A high efficiency and low audio noise motor includes an armature (Figure 5) and a stator (Figure 6). The armature has an armature aspect ratio which is equal to the armature diameter (DA) divided by the armature thickness and is not less than three. The stator has a stator aspect ratio which is equal to the stator outer diameter (DO) divided by the stator thickness and is not less than five. The motor can be used in vacuum cleaners, floor buffers, and yard blowers. Audio noise is substantially reduced with such armature and stator structure.

La présente invention concerne un moteur à haut rendement et faible bruit audio, qui comprend un induit (figure 5) et un stator (figure 6). L'induit possède un facteur de forme d'induit qui est égal au diamètre de l'induit (DA) divisé par l'épaisseur de l'induit et qui est supérieur ou égal à trois. Le stator possède un facteur de forme de stator qui est égal au diamètre extérieur du stator (DO) divisé par l'épaisseur du stator et qui est supérieur ou égal à cinq. Le moteur de l'invention peut être utilisé dans les aspirateurs, les machines à polir et les souffleuses à feuilles. La structure d'induit et de stator de l'invention permet de réduire sensiblement les bruits audio.

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