US 12,345,279 B2
Oil lubricated fluid pumps with oil separators
David Raju Yamarthi, Bengaluru (IN); Ravindra Shankar Ganiger, Bengaluru (IN); Mohan Kannaiah Raju, Bengaluru (IN); Prachi Anand Tappu, Bengaluru (IN); Santosh Pattnaik, Bengaluru (IN); Shishir Paresh Shah, Bengaluru (IN); and Adam Joseph Wangler, Evandale, OH (US)
Assigned to GENERAL ELECTRIC COMPANY, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Jun. 14, 2022, as Appl. No. 17/840,414.
Claims priority of application No. 202211025723 (IN), filed on May 3, 2022.
Prior Publication US 2023/0358255 A1, Nov. 9, 2023
Int. Cl. F04D 29/70 (2006.01); F04D 13/06 (2006.01); F04D 25/06 (2006.01); F04D 29/049 (2006.01); F04D 29/05 (2006.01); F04D 29/056 (2006.01); F04D 29/06 (2006.01); F04D 29/063 (2006.01); F04D 29/28 (2006.01); F25B 1/053 (2006.01); F25B 31/00 (2006.01)
CPC F04D 29/708 (2013.01) [F04D 13/06 (2013.01); F04D 25/06 (2013.01); F04D 29/049 (2013.01); F04D 29/05 (2013.01); F04D 29/056 (2013.01); F04D 29/061 (2013.01); F04D 29/063 (2013.01); F04D 29/284 (2013.01); F25B 1/053 (2013.01); F25B 31/002 (2013.01); F25B 31/004 (2013.01); F25B 2400/23 (2013.01); F25B 2500/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A pump system to pressurize a supercritical fluid within a closed loop thermal transport bus, the pump system comprising:
a pump housing;
a duct fluidly coupled to the pump housing, a first portion of the duct to include a mixture of an oil and the supercritical fluid, a second portion of the duct to include the supercritical fluid;
a separator positioned in a third portion of the duct between the first portion of the duct and the second portion of the duct, the separator to separate the oil in the mixture from the supercritical fluid;
a rotatable shaft disposed in the pump housing;
a motor coupled to the rotatable shaft, wherein the rotatable shaft includes a first end and a second end opposite the first end, a first portion of the rotatable shaft disposed between the first end and the motor, a second portion of the rotatable shaft disposed between the second end and the motor;
an impeller coupled to the first end of the rotatable shaft;
a first bearing coupled to the first portion of the rotatable shaft, the first bearing including a first stiffness; and
a second bearing coupled to the second portion of the rotatable shaft, the second bearing including a second stiffness greater than the first stiffness.