US 12,191,717 B2
Rotor with cooling fluid flow channels formed in permanent magnets
Fuminori Suzuki, Tokyo (JP); and Naoki Seki, Tokyo (JP)
Assigned to IHI Corporation, Tokyo (JP)
Filed by IHI Corporation, Tokyo (JP)
Filed on Apr. 5, 2022, as Appl. No. 17/657,976.
Application 17/657,976 is a continuation of application No. PCT/JP2020/046341, filed on Dec. 11, 2020.
Claims priority of application No. 2020-053918 (JP), filed on Mar. 25, 2020.
Prior Publication US 2022/0231559 A1, Jul. 21, 2022
Int. Cl. H02K 1/32 (2006.01); H02K 1/278 (2022.01); H02K 1/28 (2006.01)
CPC H02K 1/32 (2013.01) [H02K 1/278 (2013.01); H02K 1/28 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A rotor of an electrical rotating device, the rotor comprising:
a rotor core;
a plurality of permanent magnets mounted on an outer circumference of the rotor core;
a retaining sleeve that is configured of a plurality of divided sleeves divided along a direction of a rotation axis of the rotor and holds the plurality of permanent magnets from an outer side of the plurality of permanent magnets;
a seam formed between adjacent divided sleeves in the plurality of divided sleeves;
a cooling fluid flow channel formed on each surface of the plurality of permanent magnets on a side of the retaining sleeve; and
a seal ring that covers the seam from an outer circumferential side or an inner circumferential side.