Thrust generating apparatus
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsMasahito Tanaka, Hiromitsu Kiyose, Tetsuro Ikebuchi, Kentaro Nakagawa
Life of this patent
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Abstract
A thrust generating apparatus is provided under water and configured to generate thrust by ejecting the water. A rotor main body includes: a first member including a side surface and outer peripheral surface which are opposed to a first water lubricated bearing; a second member including a side surface and outer peripheral surface which are opposed to a second water lubricated bearing; and a third member including a supporting surface contacting an inner peripheral surface of a rotor core. The first to third members are fixed to one another so that each member is detachable.
Claims8
A thrust generating apparatus provided in a liquid and configured to generate thrust by ejecting the liquid,
- the thrust generating apparatus comprising:
- an annular stator including a casing, a plurality of coils being provided on an inner periphery side of the casing;
- a rotor provided on an inner periphery side of the stator and including an annular rotor main body at which a plurality of magnets are provided;
- a propeller blade provided on a radially inner side of the rotor main body and formed integrally with the rotor main body;
- and
- a sliding bearing provided to be opposed to a side surface and outer peripheral surface of the rotor main body and configured to support a thrust load and a radial load, wherein:
- the casing includes an annular outer casing and an annular inner casing provided on an inner periphery side of the outer casing;
- the inner casing includes funnel-shaped fairings respectively provided on both sides of the rotor main body and each formed so as to enlarge a diameter thereof in a direction away from the rotor main body;
- the fairings are provided on the inner periphery side of the outer casing and integrated with the outer casing so that each is detachable;
- the stator includes a coil accommodating space for accommodating a stator core around which the coils wind and a cooling space formed between the outer casing and the inner casing;
- a gap is formed between each of outer end portions of the fairings and the outer casing;
- and
- the cooling space communicates through the gap with a main channel where the propeller blade is provided.
A thrust generating apparatus provided in a liquid and configured to generate thrust by ejecting the liquid,
- the thrust generating apparatus comprising:
- an annular stator at which a plurality of coils are provided;
- a rotor including a rotor main body at which a plurality of magnets are provided;
- a propeller blade provided on a radially inner side of the rotor main body and formed integrally with the rotor main body;
- and
- a boss formed integrally with a radially inner tip end of the propeller blade and provided on a rotation axis line of the rotor, wherein:
- the rotor main body, the propeller blade, and the boss rotate integrally, and the rotor main body, the propeller blade, and the boss are fixed to one another so that each is detachable;
- the boss includes a pair of separable bosses configured to be separable in both directions along the rotation axis line;
- and
- the pair of separable bosses are fastened to each other by a bolt and compressively sandwich the radially inner tip end of the propeller blade directly.
Dependencies are inferred from the claim text.