Electric propulsion device with hollow shaft and cooling blades and support body with heat member on outer surface

An electric propulsion device comprising:

• a hollow shaft extending along an axis and having a shaft flow path, extending in a direction of the axis, formed therein;
• a boss portion having a disc shape centered on the axis, attached to the hollow shaft on one side in the direction of the axis, and having a space formed therein;
• a plurality of blades extending from an outer circumferential surface of the boss portion in a radial direction, arranged at intervals in a circumferential direction, and having a blade flow path, communicating with the space of the boss portion, formed therein;
• an electric motor having a rotor core that is provided on an outer circumferential surface of the hollow shaft and a stator core that covers the rotor core from an outer circumferential side;
• a casing having an accommodation space, accommodating the electric motor and communicating with the shaft flow path, formed therein;
• a support body that is supported by the casing and that is inserted inside the shaft flow path;
• and
• a heater member that is provided in the support body, wherein
• a suction port is formed to communicate between an outside of the casing and the accommodation space, in a position between each of the plurality of blades and the electric motor in the casing,
• a blowing port is formed to communicate between the blade flow path and the outside of the casing, in a region including an end portion of each of the plurality of blades on an outer side in the radial direction in the each of the plurality of blades,
• the suction port is open toward the one side in the direction of the axis to face each of the plurality of blades,
• the blowing port is opened to blow air from the end portion of the each of the plurality of blades toward a rear edge,
• the support body has a cylindrical shape centered on the axis, and
• the heater member is attached to an outer circumferential surface of the support body.