Blower motor with adjustable timing

Details Blower motor with adjustable timing Blower motor with adjustable timing

H - Electricity

02

K

H02K 29/06 (2006.01) F04D 27/02 (2006.01) H01S 3/036 (2006.01) H02K 29/08 (2006.01)

Patent

CA 2190697

A brushless DC motor with an adjustable timing feature is provided. The timing adjustment allows a specific motor's performance to be optimized by compensating for individual variations both in the characteristics of the rotor position sensors as well as in their locations. The rotor position sensors may be affixed to a heat sink within a portion of the motor housing. To improve the cooling efficiency of the heat sink at least a portion of the motor housing to which the heat sink is thermally coupled is cooled through either active or passive cooling. The rotor position sensors may be enclosed by a structure which improves their thermal and electrical isolation. A means of monitoring and controlling the speed of the motor is also provided.

La présente invention vise un moteur à courant continu sans balai muni d'un dispositif de régulation. La régulation du moteur permet d'en optimiser la performance en compensant les variations individuelles des capteurs de position du rotor, tant sur le plan de leurs caractéristiques que de leur emplacement. Les capteurs de position du rotor peuvent être fixés sur un puits de chaleur sur une partie du carter. Afin d'améliorer la fonction de refroidissement du puits de chaleur, au moins une partie du carter à laquelle le puits de chaleur est thermocouplé est refroidie, soit par refroidissement actif ou par refroidissement passif. Les capteurs de position du rotor peuvent être protégés par une structure qui améliore l'isolation électrique et thermique. Il est également possible de contrôler et de régler la vitesse du moteur.

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