| CPC F04D 13/064 (2013.01) [F04D 29/5806 (2013.01); F04D 13/0626 (2013.01); F04D 29/5813 (2013.01); F04D 29/5893 (2013.01)] | 9 Claims |
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1. An electric coolant pump comprising:
a pump housing comprising,
a pumping chamber which is filled with a coolant during a pump operation, the pumping chamber comprising,
a radially inner pump inlet,
a radially outer pump outlet, and
a pump volute which extends from downstream of the radially inner pump inlet to the radially outer pump outlet, the pump volute comprising a volute cooling sector, and
a motor chamber which is fluidically separated from the pumping chamber by a separation sidewall which extends substantially in a radial plane, the separation sidewall comprising a cooling section which is defined by the volute cooling sector;
an electric motor comprising,
a rotatable motor rotor,
a static motor stator comprising a single compact stator coil arrangement comprising at least one stator coil and being arranged laterally with respect to the rotatable motor rotor in the motor chamber, and
a motor electronics which is arranged in the motor chamber and which is configured to energize the single compact stator coil arrangement; and
a pump wheel arranged in the pumping chamber, the pump wheel being co-rotatably connected with the rotatable motor rotor,
wherein,
the single compact stator coil arrangement is arranged axially adjacent to the volute cooling sector of the pump volute and in a thermal contact with the cooling section of the separation sidewall, and
each of the at least one stator coil is arranged on a same side of the motor rotor as the pump outlet.
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