Motor-integrated fluid machine including rotatable ring with magnets and restrainer part, and vertical take-off and landing aircraft

Patent metadata

Field	Value
Publication number	US-12155281-B2
Application number	US-202017762245-A
Country	US
Kind code	B2
Filing date	Jul 7, 2020
Priority date	Sep 26, 2019
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

A motor-integrated fluid machine includes a rotatable part configured to rotate around a rotation axis; an outer peripheral part at an outer periphery of the rotatable part; a motor configured to provide power from the outer peripheral part to rotate the rotatable part; and a restrainer part. The rotatable part includes a support ring around the rotation axis, and blades on a center side of the support ring. The blades are side by side in a circumferential direction. The motor includes a rotor side magnet on an outer peripheral side of the support ring in a radial direction, and a stator side magnet on an inner peripheral side of the outer peripheral part to face the rotor side magnet. The restrainer part is configured to restrain the support ring and the rotor side magnet from outside to integrate the support ring and the rotor side magnet.

First claim

The invention claimed is:

1. A motor-integrated fluid machine comprising:
a rotatable part configured to rotate around a rotation axis;
an outer peripheral part at an outer periphery of the rotatable part;
an outer peripheral drive motor configured to provide power from the outer peripheral part so as to rotate the rotatable part; and
a restrainer part,
wherein the rotatable part includes:
a rotatable support ring in an annular shape around the rotation axis; and
a plurality of blades on a center side of the rotatable support ring, the plurality of blades being side by side in a circumferential direction of the rotation axis,
wherein the outer peripheral drive motor includes:
a rotor side magnet on an outer peripheral side of the rotatable support ring in a radial direction; and
a stator side magnet on an inner peripheral side of the outer peripheral part, the stator side magnet facing the rotor side magnet, and
wherein:
the restrainer part is wound around the rotatable support ring and configured to restrain the rotatable support ring and the rotor side magnet so as to integrate the rotatable support ring and the rotor side magnet, serving as a core; and
a first length of the restrainer part in a longitudinal direction is longer than a second length of the restrainer part in a width direction.

2. A vertical take-off and landing aircraft comprising:
the motor-integrated fluid machine according to claim 1 ; and
an airframe configured to be moved by thrust generated from the motor-integrated fluid machine.

3. The motor-integrated fluid machine according to claim 1 ,
wherein the restrainer part includes a composite material.

4. The motor-integrated fluid machine according to claim 3 ,
wherein the composite material is wound around the rotatable support ring and the rotor side magnet over an entire circumference of the rotatable support ring.

5. The motor-integrated fluid machine according to claim 3 ,
wherein the composite material is wound in an overlapping manner in a circumferential direction of the rotatable support ring.

6. The motor-integrated fluid machine according to claim 3 ,
wherein at least one of the rotatable support ring or the rotor side magnet is chamfered at a corner that is in contact with the composite material.

7. The motor-integrated fluid machine according to claim 3 , wherein:
a width of the rotatable support ring in an axial direction is wider than a width of the rotor side magnet in the axial direction; and
the rotor side magnet is at a center of the rotatable support ring in the axial direction.

8. The motor-integrated fluid machine according to claim 3 , further comprising:
a restrainer ring in an annular shape on an outer peripheral side opposite to the rotatable support ring with the rotor side magnet interposed between the rotatable support ring and the restrainer ring,
wherein the composite material is wound around the rotatable support ring, the rotor side magnet, and the restrainer ring from outside the rotatable support ring, the rotor side magnet, and the restrainer ring.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Ohashi Kazuki
• Fujiwara Naoaki

Classifications

• H02K21/14 Primary

  with magnets rotating within the armatures · CPC title

• F04D25/0606 Primary

  the electric motor being specially adapted for integration in the pump · CPC title

• B64U10/20

  Vertical take-off and landing [VTOL] aircraft (flying platforms B64U10/13; helicopters B64U10/17) · CPC title

• B64U30/20

  Rotors; Rotor supports · CPC title

• B64C27/20

  Rotorcraft characterised by having shrouded rotors, e.g. flying platforms · CPC title