| CPC F04D 29/5806 (2013.01) [F04D 1/00 (2013.01); F04D 25/06 (2013.01); F04D 29/4226 (2013.01)] | 14 Claims |
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1. A fluid pump for conveying coolant,
wherein the fluid pump comprises an electric motor with a shaft that can rotate about a rotational axis (RA), a rotor and a stator,
wherein the shaft is connected to the rotor for conjoint rotation, and the shaft can rotate with the rotor in the stator,
wherein the fluid pump comprises a motor housing, and the motor is contained in the motor housing,
wherein the motor housing comprises a housing body with a housing wall encompassing the rotational axis (RA), and a base that is transverse to the rotational axis (RA), and a lid that closes the housing body axially,
wherein the motor housing comprises an interior space filled with air that is sealed against fluids, and a drive end of the shaft extends out of the interior space in the motor housing through the base of the housing body, and
wherein the fluid pump comprises an impeller unit with an impeller, and the impeller in the impeller unit is connected to the drive end of the shaft of the motor for conjoint rotation,
wherein the rotor has numerous blades on one side, and the blades form a radial fan for conveying air inside the interior space,
wherein the lid on the motor housing forms a counter-directional surface for the blades of the impeller, and
wherein the motor housing comprises numerous radial cooling fins protruding into the interior space, and
the counter-directional surface is circular and the cooling fins transition radially into the counter-directional surface.
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