Electric propulsion device
AssigneeSuzuki Motor Corporation
InventorYasushi MIYASHITA
Life of this patent
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Abstract
An electric propulsion device includes a motor configured to rotate a propeller, a propeller shaft disposed below the motor and provided with the propeller in a rear part, a lower case accommodating a front part of the propeller shaft, and a cooling device configured to cool the motor. The cooling device includes a heat exchanger configured to cool refrigerant by using water outside the electric propulsion device as cooling water, a motor cooling jacket provided in the motor and configured to cool the motor by using the refrigerant, and a circulation passage configured to circulate the refrigerant between the heat exchanger and the motor cooling jacket. The heat exchanger is provided in the lower case.
Claims10
An electric propulsion device comprising:
- a motor configured to rotate a propeller;
- a propeller shaft disposed below the motor and provided with the propeller in a rear part;
- a lower case accommodating a front part of the propeller shaft;
- and
- a cooling device configured to cool the motor, wherein
- the cooling device includes
- a heat exchanger configured to cool refrigerant by using water outside the electric propulsion device as cooling water,
- a motor cooling jacket provided in the motor and configured to cool the motor by using the refrigerant, and
- a circulation passage configured to circulate the refrigerant between the heat exchanger and the motor cooling jacket, and
- the heat exchanger is provided in the lower case.
Dependencies are inferred from the claim text.