Abstract: An air guide structure is disposed between an axial flow fan and a heating body. The air guide structure includes a frame body and at least three air guide vanes, and the air guide vanes are arranged in an annular array on the frame body. A curved surface or multiple planar surfaces are provided between an air guide vane leading edge and an air guide vane trailing edge for transition between the air guide vane leading edge and the air guide vane trailing edge, the air guide vane leading edge is parallel to an incoming flow direction of the axial flow fan, and the air guide vane trailing edge is parallel to an air outlet channel of the heating body. A fan heater includes an axial flow fan, a heating body, and the air guide structure.

Abstract: An air channel arrangement of a tower fan, arranged for accommodating an air blower therein, includes a housing having an air inlet, an air outlet and an air blower installation space therein, a volute shell and a volute member having a curved surface portion, wherein the volute shell and the curved surface portion of the volute member are arranged on two sides of the air outlet respectively such that, when the air blower is driven to rotate, the airflow is guided to flow through the air channel smoothly, so that the tower fan has excellent air supply efficiency and is able to prevent eddy airflow being formed in in the air channel and reduce working noise of the tower fan.

Abstract: An air channel arrangement of a tower fan, arranged for accommodating an air blower therein, includes a housing having an air inlet, an air outlet and an air blower installation space therein, a volute shell and a volute member having a curved surface portion, wherein the volute shell and the curved surface portion of the volute member are arranged on two sides of the air outlet respectively such that, when the air blower is driven to rotate, the airflow is guided to flow through the air channel smoothly, so that the tower fan has excellent air supply efficiency and is able to prevent eddy airflow being formed in in the air channel and reduce working noise of the tower fan.