US Patent 11873824 Blower

A blower, comprising: a blower body, having accommodated therein a fan and a drive unit, a rotation shaft of the fan defining a longitudinal axis, and the blower body defining an air inlet; a blow pipe, attached to the blower body and extending along the longitudinal axis, the blow pipe defining an air outlet; and a control unit, for controlling operation of the drive unit. The blower defines an airflow path extending from the air inlet to the air outlet, the control unit being at least partially located in the airflow path, such that when the blower is operating, at least a portion of an airflow entering the air inlet cools the control unit and is then discharged through the air outlet.