US 12,372,100 B2
Fluid compressor device with e-machine and plural working fluid flow paths for e-machine and bearing cooling
Subhash Nayak, Bangalore (IN); Anup Varadkar, Pune (IN); Suryakant Gupta, Bangalore (IN); and Poomkuzhimannil John, Bangalore (IN)
Assigned to GARRETT TRANSPORTATION I INC., Torrance, CA (US)
Filed by Garrett Transportation I Inc., Torrance, CA (US)
Filed on Feb. 21, 2023, as Appl. No. 18/171,724.
Claims priority of application No. 202211074219 (IN), filed on Dec. 21, 2022.
Prior Publication US 2024/0209870 A1, Jun. 27, 2024
Int. Cl. F04D 29/58 (2006.01); F04D 25/06 (2006.01); F04D 29/057 (2006.01)
CPC F04D 29/582 (2013.01) [F04D 25/06 (2013.01); F04D 25/0606 (2013.01); F04D 29/057 (2013.01); F04D 29/5806 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fluid compressor device comprising:
a housing;
a rotating group;
a bearing system that supports the rotating group for rotation within the housing about an axis of rotation;
a compressor section that is cooperatively defined by a compressor wheel of the rotating group and a compressor housing of the housing, the compressor housing including a compressor inlet;
a motor section with an electric motor that is housed within a motor housing of the housing;
a working fluid first flow path that extends in a downstream direction through the motor housing to the compressor inlet, the working fluid first flow path configured to receive a first flow of a working fluid that flows downstream through the motor housing past the electric motor and into the compressor inlet to be compressed by the compressor section;
a working fluid second flow path extending through the housing, the working fluid second flow path configured to receive a portion of the working fluid from the compressor section and direct the portion to the bearing system before merging with the working fluid first flow path; and
a controller section that is configured to control the electric motor, the controller section including a cavity that defines a portion of the working fluid first flow path.