US 12,188,406 B2
Axial-centrifugal contra-rotating light weight, compact compression system
Chetankumar Sureshbhai Mistry, West Bengal (IN); and Akchhay Kumar, West Bengal (IN)
Assigned to INDIAN INSTITUTE OF TECHNOLOGY, KHARAGPUR, West Bengal (IN)
Appl. No. 18/248,998
Filed by INDIAN INSTITUTE OF TECHNOLOGY, KHARAGPUR, West Bengal (IN)
PCT Filed Oct. 19, 2021, PCT No. PCT/IN2021/050994
§ 371(c)(1), (2) Date Apr. 13, 2023,
PCT Pub. No. WO2022/085024, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 202031045996 (IN), filed on Oct. 22, 2020.
Prior Publication US 2023/0392546 A1, Dec. 7, 2023
Int. Cl. F02C 3/08 (2006.01); F04D 1/06 (2006.01); F04D 3/00 (2006.01)
CPC F02C 3/08 (2013.01) [F04D 1/06 (2013.01); F04D 3/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An axial centrifugal contra rotating light weight and compact compressor configuration suitable for any working fluid based systems selectively including a compressor system with air/gas as the working fluid and a pumping system with any liquid as the working fluid comprising:
an axial-centrifugal contra-rotating compressor configuration with at least one back end centrifugal compressor stage;
said axial-centrifugal contra-rotating compressor configuration comprises:
at least a twin-spool configuration comprising of at least two rotor blading assemblies, wherein a first rotor blading assembly rotates in the direction opposite to a second rotor blading assembly, and
at least one low-pressure (LP) rotor blading assembly comprising of at least one axial rotor, and at least one high-pressure (HP) rotor blading assembly, comprising of at least two rotors including one axial rotor and one centrifugal rotor;
a flow passage comprising an inter-stage connecting duct between an axial and a centrifugal compressors; and
an exhaust diffuser passage of the centrifugal compressors with an axial exit;
said compressor system include a multistage, gas turbine-driven or motor-driven system.