Abstract: A fan unit (1), in particular for an air conditioning system of a motor vehicle, comprising an electric motor (2) for driving a fan wheel (3), an electronic device (7) which generates waste heat and provides electrical current to the electric motor (2) and a fan housing (6), wherein the fan wheel (3) is disposed together with the electric motor (2) in an air guiding region (5) delimited by the fan housing (6). Provision is thereby made for the electronic device (7) to be fastened to the side of the fan housing (6) which faces away from the air guiding region (5) in a heat transferring manner so that a heat transfer connection is formed between the electronic device (7) and the air guiding region (5).

Abstract: The invention is based on an axial fan with a hub region (4, 27) for connecting the axial fan with a driven shaft (20) of an electrical drive (21), whereby the axial fan is statically balanced by means of a balancing weight (26). A flexurally soft connection is formed in the hub region (4, 27) between the axial fan (1) and the driven shaft (20) of an electrical drive (21).

Abstract: The invention is based on an axial fan with a hub region (4, 27) for connecting the axial fan with a driven shaft (20) of an electrical drive (21), whereby the axial fan is statically balanced by means of a balancing weight (26). A flexurally soft connection is formed in the hub region (4, 27) between the axial fan (1) and the driven shaft (20) of an electrical drive (21).

Abstract: A blower for cooling an internal combustion engine of a power vehicle comprises an electric drive motor having a housing with slots for ventilation, and a series resistance provided on an outer side of the housing at a distance from the latter and covering the slots, the series resistance being connectable with and disconnectable from a working current circuit of the drive motor.