Blower, electric machine and associated method

A blower includes an impeller housing, an impeller rotatably secured to the housing and an electric motor. The motor has a motor housing with a central portion and a radially extending portion extending from the central portion, a venturi chamber adjacent the motor housing and opposed to the impeller housing, a stator secured to the central portion of the motor housing, a rotor rotatably secured to the central portion of the housing, and at least one heat generating electrical component secured to the radially extending portion of the motor housing. The impeller housing has a first air pressure therein and the motor housing has a second air pressure therein different that the first air pressure. The venturi housing and the motor housing define a passageway therebetween whereby the difference in air pressure generates air flow within the motor housing to cool the at least one heat generating electrical component. 本发明涉及鼓风机，包括叶轮壳体、可旋转地安装至壳体的叶轮以及电动马达。该电动马达具有带有中心部和从该中心部延伸的径向延伸部的马达壳体、邻近该马达壳体并且与该叶轮壳体相对的文丘里腔室、固定至马达壳体