ClassID:

144147

F04D27/0238 - CPC Classification

Classification description:

Control, e.g. regulation, of pumps, pumping installations or systems; Surge control by bleeding, bypassing or recycling fluids Details or means for fluid reinjection

Recent Application in this class:
#1
20250188944
2025-06-12

COMPRESSOR HOUSING, RADIAL COMPRESSOR WITH A COMPRESSOR HOUSING OF THIS TYPE, RADIAL COMPRESSOR ARRANGEMENT, EXHAUST GAS TURBOCHARGER AND INTERNAL COMBUSTION ENGINE

#2
20240368999
2024-11-07

TURBINE OVERSPEED PROTECTION

#3
20240280102
2024-08-22

Vapor injection structure for a compressor

#4
20240159247
2024-05-16

Casing Treatment for Gas Turbine Engines

#5
20230175522
2023-06-08

Stabilizer of a compressor

#6
20230142730
2023-05-11

Secondary-fluid supply for the diffuser of a compressor stage

#7
20230057749
2023-02-23

Compressor including aerodynamic swirl between inlet guide vanes and impeller blades

#8
20230025097
2023-01-26

Centrifugal compressor with recirculation passage

#9
20230011820
2023-01-12

MULTISTAGE CENTRIFUGAL PUMP

#10
20220154721
2022-05-19

Centrifugal compressor with recirculation structure

#11
20220010802
2022-01-13

Centrifugal compressor with recirculation passage

#12
20210131441
2021-05-06

Apparatus and method for diagnosing and controlling aerodynamic stability of compressor

#13
20200271130
2020-08-27

Compressor

#14
20200124052
2020-04-23

FAN ASSEMBLY WITH RECIRCULATION FLOW

#15
20200088097
2020-03-19

Ported shroud system for turboprop inlets

#16
20190249681
2019-08-15

Centrifugal compressor with recirculation passage

#17
20190226350
2019-07-25

Turbomachines that include a casing treatment

#18
20190203737
2019-07-04

Technique for controlling rotating stall in compressor for a gas turbine engine

#19
20190178161
2019-06-13

Bleed ejector

#20
20190107111
2019-04-11

Centrifugal compressor with recirculation structure

#21
20190072029
2019-03-07

COMPRESSOR ARRANGEMENT SUPPLYING CHARGED AIR TO A COMBUSTION ENGINE

#22
20190055952
2019-02-21

Compressor recirculation into annular volume

#23
20190040865
2019-02-07

Active surge control in centrifugal compressors using microjet injection

#24
20180347401
2018-12-06

Compressors with integrated secondary air flow systems

#25
20180238336
2018-08-23

COMPRESSOR RECIRCULATION VALVE WITH VALVE SEAT STRUCTURE FOR SUPPRESSING NOISE UPON OPENING OF VALVE

#26
20180142699
2018-05-24

Compressor assembly for a turbocharger

#27
20180066573
2018-03-08

Turbocharger for a motor vehicle

#28
20180058309
2018-03-01

Compressor of a turbocharger having an air recirculation valve and turbocharger and motor vehicle having such a compressor

#29
20170211465
2017-07-27

Compressor recirculation system having compressor inlet recirculation duct configured to reduce noise from Rossiter excitation and cavity acoustic resonance

#30
20170198720
2017-07-13

Centrifugal compressor with liquid injection

#31
20170198707
2017-07-13

Centrifugal compressor with hot gas injection

#32
20170176053
2017-06-22

Hot gas bypass for two-stage compressor

#33
20170122660
2017-05-04

De-superheater system and compression system employing such de-superheater system, and method of producing a pressurized and at least partially condensed mixture of hydrocarbons

#34
20170058687
2017-03-02

Vortex-injector casing for an axial turbomachine compressor

#35
20160327056
2016-11-10

Intermediate intake-type diaphragm and centrifugal rotating machine

#36
20160252098
2016-09-01

Systems and methods for axial compressor with secondary flow

#37
20160195109
2016-07-07

Attachment arrangement for turbo compressor

#38
20160160756
2016-06-09

Turbocharger combining axial flow turbine with a compressor stage utilizing active casing treatment

#39
20160131148
2016-05-12

Centrifugal compressor and turbocharger

#40
20160131145
2016-05-12

Adjustable-trim centrifugal compressor with ported shroud, and turbocharger having same

#41
20150354589
2015-12-10

Centrifugal compressor with extended operating range

#42
20150285257
2015-10-08

Compressor recirculation into annular volume

#43
20150118075
2015-04-30

COMPRESSOR THRUST BEARING SURGE PROTECTION

#44
20140356143
2014-12-04

Assembly for a fluid flow machine

#45
20140341708
2014-11-20

Valve for gas turbine engine

#46
20140208788
2014-07-31

Centrifugal compressor with extended operating range

#47
20140105723
2014-04-17

Gas turbine diffuser blowing method and corresponding diffuser

#48
20140093354
2014-04-03

Compressor of an exhaust-gas turbocharger

#49
20140033735
2014-02-06

Turbomachine including horizontal joint heating and method of controlling tip clearance in a gas turbomachine

#50
20130318797
2013-12-05

Compressor thrust bearing surge protection

#51
20130236300
2013-09-12

Housing and turbomachine

#52
20130232971
2013-09-12

Turbocharger compressor inlet flow control

#53
20130180249
2013-07-18

System for injecting a fluid, compressor and turbomachine

#54
20130058760
2013-03-07

Axial compressor with an injection device for injecting a fluid

#55
20130036760
2013-02-14

Centrifugal compressor with fluid injector diffuser

#56
20130017066
2013-01-17

Compressors with integrated secondary air flow systems

#57
20130000315
2013-01-03

Apparatus and method for reducing air mass flow for extended range low emissions combustion for single shaft gas turbines

#58
20120312027
2012-12-13

FLOW DISCHARGE DEVICE

#59
20120201654
2012-08-09

Turbine engine compressor having air injections

#60
20120121400
2012-05-17

Compressor of exhaust gas turbocharger

#61
20110280710
2011-11-17

Reversible system for injecting and extracting gas for fluid rotary machines

#62
20110214421
2011-09-08

Compressor of an exhaust-gas turbocharger

#63
20110103931
2011-05-05

Gas turbine compressor

#64
20110085900
2011-04-14

Housing for a compressor of a gas turbine, compressor, and method for producing a housing segment of a compressor housing

#65
20110076133
2011-03-31

Turbomachine compressor with an air injection system

#66
20110072829
2011-03-31

Gas turbine high pressure compressor fluid return and reinjection including an annular air bleeding manifold

#67
20110072828
2011-03-31

Gas turbine engine system providing simulated boundary layer thickness increase

#68
20110058931
2011-03-10

Injecting air into the flow path of a turbomachine compressor

#69
20100196137
2010-08-05

Closed-loop control for a gas turbine with actively stabilized compressor

#70
20100111688
2010-05-06

Axial-centrifugal compressor with ported shroud

#71
20090317232
2009-12-24

Blade shroud with aperture

#72
20090252596
2009-10-08

Fluid flow machine with fluid injector assembly

#73
20090238688
2009-09-24

Fluid injector nozzle for a main flow path of a fluid flow machine

#74
20090238677
2009-09-24

Centrifugal compressor with air extraction and return at the casing

#75
20090232642
2009-09-17

Adjustable compressor bleed system and method

#76
20090232636
2009-09-17

Multistage compressor for a gas turbine, comprising discharge ports and injection ports to stabilize the compressor flow

#77
20090196730
2009-08-06

Gas turbine with a compressor with self-healing abradable coating

#78
20090047120
2009-02-19

Blade shroud with fluid barrier jet generation

#79
20090047117
2009-02-19

Flow control arrangement

#80
20080298951
2008-12-04

Air reinjection compressor

#81
20080155989
2008-07-03

Operating line control of a compression system with flow recirculation

#82
20080133110
2008-06-05

Turbocharged internal combustion engine system

#83
20080112799
2008-05-15

Gas turbine engine providing simulated boundary layer thickness increase

#84
20080092516
2008-04-24

Engine arrangement

#85
20080038112
2008-02-14

Spiral air induction

#86
20060153673
2006-07-13

Turbomachine exerting dynamic influence on the flow

#87
20060115358
2006-06-01

Centrifugal compressor

#88
20060104805
2006-05-18

Turbomachine with means for the creation of a peripheral jet on the stator

#89
20060067833
2006-03-30

Integral add heat and surge control valve for compressor

#90
20060045772
2006-03-02

Compressor including an aerodynamically variable diffuser

#91
20050226717
2005-10-13

Flow control arrangement