US 12,286,202 B2
Fluid machine and underwater vehicle
Shigeki Senoo, Tokyo (JP); Shinichi Isobe, Tokyo (JP); Wataru Yamada, Tokyo (JP); Takehiko Nishida, Tokyo (JP); Takuyoshi Yamada, Tokyo (JP); Kazuki Hosono, Tokyo (JP); Yoshitomo Noda, Tokyo (JP); Hiroki Takeda, Tokyo (JP); and Yuichi Sekine, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Mar. 24, 2022, as Appl. No. 17/703,093.
Claims priority of application No. 2021-061810 (JP), filed on Mar. 31, 2021.
Prior Publication US 2022/0315185 A1, Oct. 6, 2022
Int. Cl. B63H 1/28 (2006.01); B63G 8/08 (2006.01); B63H 21/17 (2006.01); F04D 13/06 (2006.01); H02K 1/30 (2006.01); H02K 5/132 (2006.01); H02K 21/14 (2006.01)
CPC B63H 1/28 (2013.01) [B63G 8/08 (2013.01); B63H 21/17 (2013.01); F04D 13/06 (2013.01); H02K 1/30 (2013.01); H02K 5/132 (2013.01); H02K 21/14 (2013.01); H02K 2205/03 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A fluid machine comprising:
a shaft portion extending in an axial direction;
a shroud provided to surround the shaft portion and having a diameter decreasing from an upstream side on one side in the axial direction toward a downstream side on another side in the axial direction, a flow path being formed between the shroud and the shaft portion and having a flow path cross-sectional area decreasing toward the downstream side;
a propeller rotatably provided about an axis between the shaft portion and the shroud and configured to pump a fluid from the upstream side toward the downstream side; and
a motor provided to correspond to the propeller, the motor including
a rotor having a ring shape and being fixed to an outer circumference portion of the propeller and accommodated in the shroud, and
a stator having a ring shape surrounding the rotor and being fixed in the shroud, wherein;
the motor is a conical motor in which diameters of the rotor and the stator decrease from the upstream side toward the downstream side;
the shroud includes a plurality of segments of the shroud divided into a plurality of pieces in the axial direction; and
the fluid machine further includes a coupling portion configured to couple the plurality of segments in the axial direction.