초록 ▼

A motor assembly for use in combination with an air handling system such as an automotive blower system for supplying cooling or heating air to a passenger compartment of an automobile. The assembly comprises a support member which is adapted to be mounted on the air handling system. Stationary and

A motor assembly for use in combination with an air handling system such as an automotive blower system for supplying cooling or heating air to a passenger compartment of an automobile. The assembly comprises a support member which is adapted to be mounted on the air handling system. Stationary and annular rotatable assemblies are mounted on one side of the support plate and a printed circuit board including a motor control circuit is mounted on the other side thereof. The stationary assembly has a plurality of winding stages adapted to be electrically energized to generate an electromagnetic field. The annular rotatable assembly has a plurality of permanent magnet elements surrounding the stationary assembly and is adapted to engage a squirrel cage fan for moving air in the air handling system. The control circuit is connected to the winding stages for applying a voltage to one or more of the winding stages at a time and for commutating the winding stages in a preselected sequence to rotate the rotatable assembly. The support member has an opening in communication with apertures in the stationary and rotatable assemblies so that impellers on the rotatable assembly cool the control circuit by drawing air over it and through the opening and apertures.

대표청구항 ▼

A motor assembly comprising: a support member adapted to be mounted on a stationary support for supporting said motor assembly and having a first side and a second side opposite the first side, said support member having at least one opening therein adapted to permit airflow therethrough; a stationa

A motor assembly comprising: a support member adapted to be mounted on a stationary support for supporting said motor assembly and having a first side and a second side opposite the first side, said support member having at least one opening therein adapted to permit airflow therethrough; a stationary assembly mounted on the first side of said support member and having a plurality of winding stages adapted to be electrically energized to generate an electromagnetic field; an annular rotatable assembly on the first side of said support member and including a plurality of permanent magnetic elements surrounding said stationary assembly; control means, connected to the winding stages and mounted on the second side of said support member, for applying a voltage to one or more of the winding stages at a time and for commutating the winding stages in a preselected sequence to rotate the rotatable assembly; and impeller means on said rotatable assembly for moving air in heat exchange relationship with said control means and through the opening in said support member.