Electric vacuum cleaner

Abstract

The electric vacuum cleaner here disclosed includes a main motor housing supporting a bypass type motor within it. The motor housing is separably connected to and swingable about the materials collecting tank beneath it. A tube projecting above the cover of the tank and extending laterally over the cover defines the air flow communication between the tank and depending side sections of the motor housing which meet and are releasably attached to the ends of the tube. The tube also defines the swing axis of the motor housing. Detents control this swinging. A resilient cuff over the motor in the housing separates the fan motor bypass cooling air inlet and outlet from each other and from the main suction fan outlet and also separates all of these from the main suction fan inlet, while also defining respective flow paths communicating with inlets and outlets from the motor housing. A series of baffles between the main suction fan outlet and the outlet for this air from the motor housing elongates the path of this air, redirects it and damps its vibration for reducing noise. An inlet airflow regulator selectively recirculates some of the air from the main fan outlet back to the main fan inlet which correspondingly adjusts inlet suction in the tank. The bearings for the wheels under the tank at the air inlet support the wheels eccentrically on the bearings, whereby rotation of the orientations of the bearings adjusts the height of the air inlet.