US 12,258,876 B2
Electric turbocharger with cooling passages
Koji Sakota, Tokyo (JP); Yuji Sasaki, Tokyo (JP); and Shun Nakayama, Tokyo (JP)
Filed by IHI Corporation, Tokyo (JP)
Filed on May 24, 2023, as Appl. No. 18/322,600.
Application 18/322,600 is a continuation of application No. PCT/JP2022/000560, filed on Jan. 11, 2022.
Claims priority of application No. 2021-019660 (JP), filed on Feb. 10, 2021.
Prior Publication US 2023/0296031 A1, Sep. 21, 2023
Int. Cl. F01D 25/12 (2006.01); F01D 25/14 (2006.01)
CPC F01D 25/12 (2013.01) [F01D 25/14 (2013.01); F05D 2220/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric turbocharger comprising:
an electric motor having a stator disposed annularly about an axis of rotation;
a stator case thermally coupled to a first end face of the stator in a direction of the axis of rotation, wherein the stator case has a case body containing the stator, and a case rib extending from an outer circumferential surface of the case body;
a casing member in contact with the stator case, wherein the stator case and the casing member form a first passage substantially surrounding the axis of rotation and disposed on a side of the first end face;
a diffuser plate that is thermally coupled to a second end face of the stator in the direction of the axis of rotation and that is spaced apart from the case rib by the case body of the stator case; and
a path block disposed between the case rib and the diffuser plate,
wherein the diffuser plate has a second passage substantially surrounding the axis of rotation,
wherein the second passage is disposed on a side of the second end face so as to be spaced apart from the first passage in the direction of the axis of rotation, and
wherein the path block has a coupling passage connecting the first passage to the second passage.