US3504986A - Wide range inducer - Google Patents

Wide range inducer Download PDF

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Publication number
US3504986A
US3504986A US712427A US3504986DA US3504986A US 3504986 A US3504986 A US 3504986A US 712427 A US712427 A US 712427A US 3504986D A US3504986D A US 3504986DA US 3504986 A US3504986 A US 3504986A
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United States
Prior art keywords
inducer
passage
fluid
impeller
pressure
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US712427A
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English (en)
Inventor
Clive Jackson
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Bendix Corp
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Bendix Corp
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Filing date
Publication date
Application filed by Bendix Corp filed Critical Bendix Corp
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Publication of US3504986A publication Critical patent/US3504986A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2277—Rotors specially for centrifugal pumps with special measures for increasing NPSH or dealing with liquids near boiling-point
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0011—Control, e.g. regulation, of pumps, pumping installations or systems by using valves by-pass valves

Definitions

  • a pressure gradient can be determined and when pressure downstream becomes high, indicating reduced flow from the pump, this high pressure can operate to open a fluid return passage so that fluid may be'recirculated from the downstream side of the inducer to the upstream side of the inducer.
  • An inducer which is required to function over a wide flow range at high speed can develop a condition of cyclic flow instability at low flow rates. This is caused by prerotation of the fluidupstream of the inducer entry plane which may cause a cylindrical core of vaporto appear in the inducer entry passage. This cavity can go into forced radial oscillation at frequency dependent upon the system configuration.
  • the pressure pulses produced at the pump discharge can be violent enough to destroy the system, unless the pump speed is reduced or the flow raate is increased to regain a stable operating condition.
  • inducer rotational speed is proportional to or equal to main pump rotational speed as is the case in aircraft after burner applications where independent rotation of the inducer would cause an increase in weight and/or a decrease in available power. It is, therefore, an object of this invention to provide an inducer capable of stable operation over a wide range of flow rates and which does not require an independent driving source.
  • This invention discloses a method of automatically varying flow rate through the inducer in such a way that pump output is not affected. It, therefore, is an object of this invention to provide an inducer capable of stable operation over a wide range of pump output flow conditions. It is also an object of this invention to provide a novel means of recirculating pump flow. It is a further object of this invention to provide an automatic means for a high-speed fluid pump of by-passing fluid back to the upstream side of the inducer, whenever the downstream pressure conditions indicate approaching instability in the operating conditions of the pump.
  • the drawing shows a high speed centrifugal pump indicated generally by 10.
  • the inducer section indicated generally by 11, consists of a helical inducerblade or blades 12 formed on a shaft 14 which is a part of the main pump shaft 16.
  • Centrifugal impeller blades 18 and 20 radiate from the main pump shaft 16.
  • Surrounding the blade 12 is slidable valve or sleeve 22 which moves to open or close the port 24 of by-pass or recirculating passage 26. Passage 26 communicates with the main fluid passage 34 upstream of the inducer blade 12.
  • the sleeve 22 includes a flange 28 and seal 30 received in annular recess 32.
  • Fluid passage 36 extends from the recess 32 and communicates with the main fluid passage 34.
  • Fluid passage 38 extends from the recess 32 and communicates with the main fluid passage 34 downstream of the inducer blade 12.
  • Spring 40 is shown biasing the sleeve 22 to close the opening 24.
  • the flow characteristic of inducers is such that the pressure of fluid at the downstream side of the inducer is greater than the pressure at the upstream side of the inducer and the pressure at the downstream side is also inversely proportional to the flow through the inducer.
  • the passages 36 and 38 serve to establish the pressure rise across the impeller blade 12 and the spring 40 provides suflicient bias pressure against the flange 28 to keep the sleeve valve 22 closed until the downstream pressure rises to a sufllcient degree to indicate that the flow has approached the desired minimum for the inducer. At this point, the pressure in passage 38 will begin to move the flange 28 and sleeve 22 against the bias of the spring 40 and the port 24 will begin to open.
  • the improvement in the inducer comprising:
  • a main fluid passage operative to communicate a fluid to be pumped to the inlet of the downstream high speed pump;
  • said inducer comprising a helically bladed axial flow impeller rotatably located in said main fluid passage;
  • recirculatory passage means having an inlet port downstream from said impeller and an outlet port upstream from said impeller, operative to increase total flow through said impeller;
  • sensing means communicating with said main fluid passage downstream of said impeller and upstream of said high speed pump operative to sense fluid flow through said impeller;
  • valve means in co-operative association with said recirculatory passage means and operatively coupled to said sensing means to control fluid flow through said recirculatory passage means.
  • sensing means sense fluid flow by comparing fluid pressure upstream and downstream from said impeller.
  • valve means comprise a normally-closed valve means located in proximity to the inlet ports of said passage means.
  • sensing means comprise mechanical positioning means connected to said valve means, means for sensing and comparing fluid pressure upstream and downstream of said impeller and means for applying the resultant pressure to said mechanical positioning means.
  • An inducer for a high speed pump having a main fluid passage comprising: a helical axial flow impeller located in said passage; fluid by-pass means connected to said passage and operable when open to circulate fluid from the downstream side of the impeller to the upstream side of the impeller; and flow control means in cooperative association with said fluid by-pass to control flow therethrough operative to increase flow therethrough, as the fluid output from said pump decreases below a predetermined minimum wherein said flow control means comprise in combination:
  • each of said pressure sensing passages connected to opposed portions of said chamber, the other end of said first pressure sensing passage connected to said main fluid passage upstream of said impeller, the other end of said second pressure passage connected to said main fluid passage downstream of said impeller;
  • said pressure comparison chamber divided by a slidable partition to isolate each of said pressure sensing passages from the other;
  • valve control means connected to said partition to control valve position in response to partition position.
  • An inducer for a fluid pump having a main fluid passage comprising:
  • a slidable sleeve having a flange surrounding said impeller and in frictional contact with the wall defining said fluid input passage
  • said sleeve slidable from a first position to a second position and yieldably biased toward said first position by said spring
  • At least one recirculating passage having inlet and outlet passages in said main fluid passage, said inlet being downstream of said impeller and said outlet being upstream of said impeller;
  • said inlet being defined by the first and second positions of the downstream edge of said sleeve such that when said sleeve is in said first position, said inlet is closed;
  • said second passage operative to apply fluid pressure to said flange in opposition to said spring to position said flange insaid passage and control said inlet.
  • a device comprising in combination:
  • a high speed centrifugal pump having a fluid inlet passage
  • an axial flow inducer located in said inlet passage
  • said inducer including a helically bladed rotatable impeller
  • recirculatory passages means having inlet and outlet ports in said inlet passage and forming a by-pass around said inducer;
  • sensing means in communication with said inlet passage operative to sense fluid flow through said inducer
  • valve means in cooperative association with said recirculatory passage means and operatively coupled to said sensing means to control fluid flow through said recirculatory passage means to maintain flow through the inlet passage above a predetermined minimum.
  • valve means comprise normally closed sleeve valve means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
US712427A 1968-03-12 1968-03-12 Wide range inducer Expired - Lifetime US3504986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71242768A 1968-03-12 1968-03-12

Publications (1)

Publication Number Publication Date
US3504986A true US3504986A (en) 1970-04-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US712427A Expired - Lifetime US3504986A (en) 1968-03-12 1968-03-12 Wide range inducer

Country Status (4)

Country Link
US (1) US3504986A (enrdf_load_stackoverflow)
DE (1) DE1912623A1 (enrdf_load_stackoverflow)
FR (1) FR2003743A1 (enrdf_load_stackoverflow)
GB (1) GB1257567A (enrdf_load_stackoverflow)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994620A (en) * 1975-06-30 1976-11-30 Wallace-Murray Corporation Variable exducer turbine control
US4120603A (en) * 1977-03-28 1978-10-17 General Motors Corporation Jet flap controlled fuel pump
US4149825A (en) * 1977-11-08 1979-04-17 Chandler Evans Inc. Power conserving inducer
US4375937A (en) * 1981-01-28 1983-03-08 Ingersoll-Rand Company Roto-dynamic pump with a backflow recirculator
US4375938A (en) * 1981-03-16 1983-03-08 Ingersoll-Rand Company Roto-dynamic pump with a diffusion back flow recirculator
US4643635A (en) * 1984-07-02 1987-02-17 Chandler Evans Inc. Vapor core centrifugal pump having main and low flow impellers
DE3724299A1 (de) * 1986-10-09 1988-04-21 Rockwell International Corp Pumpe mit ummanteltem vorlaufrad
EP0297464A3 (en) * 1987-06-25 1989-07-26 A. Ahlstrom Corporation Method and apparatus for pumping high consistency fiber suspension
US4930978A (en) * 1988-07-01 1990-06-05 Household Manufacturing, Inc. Compressor stage with multiple vented inducer shroud
US4930979A (en) * 1985-12-24 1990-06-05 Cummins Engine Company, Inc. Compressors
WO1990014510A1 (en) * 1989-05-18 1990-11-29 Sundstrand Corporation Compressor shroud air bleed passages
US5059091A (en) * 1989-07-21 1991-10-22 Rolls-Royce Plc Gas turbine engine compressor assembly
US5156522A (en) * 1990-04-30 1992-10-20 Exxon Production Research Company Deflector means for centrifugal pumps
US5214920A (en) * 1990-11-27 1993-06-01 Leavesley Malcolm G Turbocharger apparatus
US5235803A (en) * 1992-03-27 1993-08-17 Sundstrand Corporation Auxiliary power unit for use in an aircraft
US5427501A (en) * 1994-05-03 1995-06-27 Parker-Hannifin Corporation Fuel pump impeller with pump down extension
US5505587A (en) * 1995-01-05 1996-04-09 Northrop Grumman Corporation RAM air turbine generating apparatus
WO2002103209A1 (en) * 2001-06-15 2002-12-27 Concepts Eti, Inc. Flow stabilizing device
US20050152775A1 (en) * 2004-01-14 2005-07-14 Concepts Eti, Inc. Secondary flow control system
WO2008141381A1 (en) * 2007-05-21 2008-11-27 Weir Minerals Australia Ltd Improvements in and relating to pumps
US20090060708A1 (en) * 2007-07-30 2009-03-05 Thomas Hale Radial flow compressor for a turbo-supercharger
US20090301082A1 (en) * 2005-11-16 2009-12-10 Alain Lombard Turbocharger having piston-type variable nozzle with integrated actuation system
EP2163769A3 (en) * 2008-09-11 2014-03-05 Honeywell International, Inc. Compressor with variable-geometry ported shroud
US20140377051A1 (en) * 2013-06-25 2014-12-25 Ford Global Technologies, Llc Turbocharger
AU2013202763B2 (en) * 2007-05-21 2015-09-17 Weir Minerals Australia Ltd Improvements in and relating to pumps
US20160131145A1 (en) * 2014-11-10 2016-05-12 Honeywell International Inc. Adjustable-trim centrifugal compressor with ported shroud, and turbocharger having same
US20180045214A1 (en) * 2016-08-15 2018-02-15 Borgwarner, Inc. Compressor wheel, method of making the same, and turbocharger including the same
EP1473465B2 (en) † 2003-04-30 2018-08-01 Holset Engineering Company Limited Compressor
US20180238236A1 (en) * 2015-07-24 2018-08-23 Nuovo Pignone Technologie Srl Charge gas compression train for ethylene
US20190368374A1 (en) * 2018-05-29 2019-12-05 Ford Global Technologies, Llc Systems and methods for a variable inlet compressor
US20190368373A1 (en) * 2018-05-29 2019-12-05 Ford Global Technologies, Llc Systems and methods for a variable inlet compressor
CN114396383A (zh) * 2022-01-10 2022-04-26 成都凯天电子股份有限公司 一种油汽混输系统
CN116335959A (zh) * 2023-05-26 2023-06-27 泰州康乔机电设备有限公司 一种可提高流速的盘片泵结构
US20240011493A1 (en) * 2020-11-27 2024-01-11 Nuovo Pignone Tecnologie Srl Compressor for co2 cycle with at least two cascade compression stages for assuring supercritical conditions

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1464369A (en) * 1973-06-12 1977-02-09 Rolls Royce Hydraulic systems
DK139989B (da) * 1973-07-03 1979-05-28 Smedegaard As Centrifugalpumpe med reguleringsmekanisme.
US4094613A (en) * 1976-05-07 1978-06-13 Sundstrand Corporation Variable output centrifugal pump
SE464657B (sv) * 1987-03-04 1991-05-27 Stal Refrigeration Ab Reglersystem foer reglering av en rotationskompressors inre volymfoerhaallande
DE10249191B3 (de) * 2002-10-22 2004-02-19 Siegfried Blaschko Düsenantriebssystem
DE102004003206A1 (de) * 2004-01-22 2005-08-11 Daimlerchrysler Ag Verdichter im Ansaugtrakt einer Brennkraftmaschine
DE102008047506A1 (de) * 2008-09-17 2010-04-15 Daimler Ag Radialverdichter, insbesondere für einen Abgasturbolader einer Brennkraftmaschine
FR3067407B1 (fr) * 2017-06-12 2021-06-25 Airbus Safran Launchers Sas Turbopompe comprenant un inducteur ameliore
CN112253478A (zh) * 2020-09-29 2021-01-22 高邮环流泵业有限公司 一种稳定式轴流泵用新型反转透平装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1111498A (en) * 1909-12-24 1914-09-22 Allis Chalmers Mfg Co Turbo-blower.
US2398619A (en) * 1942-11-05 1946-04-16 Armstrong Siddeley Motors Ltd Regulation of rotary compressors
GB605032A (en) * 1945-12-12 1948-07-14 B F Sturtevant Co Improvements relating to axial flow fans
GB611447A (en) * 1946-04-30 1948-10-29 Atkiengesellschaft Brown A combined axial flow and centrifugal compressor for aircraft engines
US2786420A (en) * 1952-03-27 1957-03-26 Stanley G Harwood Pressure controlled pump
US2865297A (en) * 1952-12-22 1958-12-23 Thompson Prod Inc Injector cover for pumps
US2874642A (en) * 1955-10-05 1959-02-24 Allis Chalmers Mfg Co Adjustable bypass valve
US3070025A (en) * 1958-03-03 1962-12-25 Thompson Ramo Wooldridge Inc Injector discharge pressure regulator for pumps
US3106165A (en) * 1960-06-15 1963-10-08 Dowty Fuel Syst Ltd Liquid pressure supply system
US3163119A (en) * 1961-07-03 1964-12-29 North American Aviation Inc Inducer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1111498A (en) * 1909-12-24 1914-09-22 Allis Chalmers Mfg Co Turbo-blower.
US2398619A (en) * 1942-11-05 1946-04-16 Armstrong Siddeley Motors Ltd Regulation of rotary compressors
GB605032A (en) * 1945-12-12 1948-07-14 B F Sturtevant Co Improvements relating to axial flow fans
GB611447A (en) * 1946-04-30 1948-10-29 Atkiengesellschaft Brown A combined axial flow and centrifugal compressor for aircraft engines
US2786420A (en) * 1952-03-27 1957-03-26 Stanley G Harwood Pressure controlled pump
US2865297A (en) * 1952-12-22 1958-12-23 Thompson Prod Inc Injector cover for pumps
US2874642A (en) * 1955-10-05 1959-02-24 Allis Chalmers Mfg Co Adjustable bypass valve
US3070025A (en) * 1958-03-03 1962-12-25 Thompson Ramo Wooldridge Inc Injector discharge pressure regulator for pumps
US3106165A (en) * 1960-06-15 1963-10-08 Dowty Fuel Syst Ltd Liquid pressure supply system
US3163119A (en) * 1961-07-03 1964-12-29 North American Aviation Inc Inducer

Cited By (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994620A (en) * 1975-06-30 1976-11-30 Wallace-Murray Corporation Variable exducer turbine control
US4120603A (en) * 1977-03-28 1978-10-17 General Motors Corporation Jet flap controlled fuel pump
US4149825A (en) * 1977-11-08 1979-04-17 Chandler Evans Inc. Power conserving inducer
DE2848514A1 (de) * 1977-11-08 1979-05-10 Chandler Evans Inc Kraftsparendes pumpenrad
US4375937A (en) * 1981-01-28 1983-03-08 Ingersoll-Rand Company Roto-dynamic pump with a backflow recirculator
US4375938A (en) * 1981-03-16 1983-03-08 Ingersoll-Rand Company Roto-dynamic pump with a diffusion back flow recirculator
US4643635A (en) * 1984-07-02 1987-02-17 Chandler Evans Inc. Vapor core centrifugal pump having main and low flow impellers
US4930979A (en) * 1985-12-24 1990-06-05 Cummins Engine Company, Inc. Compressors
DE3724299A1 (de) * 1986-10-09 1988-04-21 Rockwell International Corp Pumpe mit ummanteltem vorlaufrad
EP0297464A3 (en) * 1987-06-25 1989-07-26 A. Ahlstrom Corporation Method and apparatus for pumping high consistency fiber suspension
US4884943A (en) * 1987-06-25 1989-12-05 A. Ahlstrom Corporation Method and apparatus for pumping high-consistency fiber suspension
US4930978A (en) * 1988-07-01 1990-06-05 Household Manufacturing, Inc. Compressor stage with multiple vented inducer shroud
WO1990014510A1 (en) * 1989-05-18 1990-11-29 Sundstrand Corporation Compressor shroud air bleed passages
US4981018A (en) * 1989-05-18 1991-01-01 Sundstrand Corporation Compressor shroud air bleed passages
US5059091A (en) * 1989-07-21 1991-10-22 Rolls-Royce Plc Gas turbine engine compressor assembly
US5156522A (en) * 1990-04-30 1992-10-20 Exxon Production Research Company Deflector means for centrifugal pumps
US5214920A (en) * 1990-11-27 1993-06-01 Leavesley Malcolm G Turbocharger apparatus
US5235803A (en) * 1992-03-27 1993-08-17 Sundstrand Corporation Auxiliary power unit for use in an aircraft
US5427501A (en) * 1994-05-03 1995-06-27 Parker-Hannifin Corporation Fuel pump impeller with pump down extension
US5505587A (en) * 1995-01-05 1996-04-09 Northrop Grumman Corporation RAM air turbine generating apparatus
WO2002103209A1 (en) * 2001-06-15 2002-12-27 Concepts Eti, Inc. Flow stabilizing device
US6699008B2 (en) 2001-06-15 2004-03-02 Concepts Eti, Inc. Flow stabilizing device
JP2008255996A (ja) * 2001-06-15 2008-10-23 Concepts Eti Inc 流れ安定化装置
EP1473465B2 (en) † 2003-04-30 2018-08-01 Holset Engineering Company Limited Compressor
US20050152775A1 (en) * 2004-01-14 2005-07-14 Concepts Eti, Inc. Secondary flow control system
US7025557B2 (en) 2004-01-14 2006-04-11 Concepts Eti, Inc. Secondary flow control system
US20090301082A1 (en) * 2005-11-16 2009-12-10 Alain Lombard Turbocharger having piston-type variable nozzle with integrated actuation system
CN102678618A (zh) * 2007-05-21 2012-09-19 伟尔矿物澳大利亚私人有限公司 泵的改进和与泵有关的改进
CN102678618B (zh) * 2007-05-21 2015-06-17 伟尔矿物澳大利亚私人有限公司 泵的改进和与泵有关的改进
EA015197B1 (ru) * 2007-05-21 2011-06-30 Уэйр Минералз Острэйлиа Лтд. Усовершенствования, относящиеся к насосам
CN105864054B (zh) * 2007-05-21 2018-06-26 伟尔矿物澳大利亚私人有限公司 一种具有转轴的泵叶轮
CN101779044B (zh) * 2007-05-21 2012-09-05 伟尔矿物澳大利亚私人有限公司 泵的改进和与泵有关的改进
CN104061184B (zh) * 2007-05-21 2017-08-04 伟尔矿物澳大利亚私人有限公司 泵的改进和与泵有关的改进
US8622706B2 (en) * 2007-05-21 2014-01-07 Weir Minerals Australia Ltd. Slurry pump having impeller flow elements and a flow directing device
AU2008253598B2 (en) * 2007-05-21 2014-02-06 Weir Minerals Australia Ltd Improvements in and relating to pumps
WO2008141381A1 (en) * 2007-05-21 2008-11-27 Weir Minerals Australia Ltd Improvements in and relating to pumps
CN104061184A (zh) * 2007-05-21 2014-09-24 伟尔矿物澳大利亚私人有限公司 泵的改进和与泵有关的改进
US20100135765A1 (en) * 2007-05-21 2010-06-03 Kevin Edward Burgess Pumps
US9897090B2 (en) 2007-05-21 2018-02-20 Weir Minerals Australia Ltd. Pumps
AU2013202763B2 (en) * 2007-05-21 2015-09-17 Weir Minerals Australia Ltd Improvements in and relating to pumps
AU2013202767B2 (en) * 2007-05-21 2015-12-17 Weir Minerals Australia Ltd Improvements in and relating to pumps
AU2013202765B2 (en) * 2007-05-21 2016-01-07 Weir Minerals Australia Ltd Improvements in and relating to pumps
AU2013202764B2 (en) * 2007-05-21 2016-01-07 Weir Minerals Australia Ltd Improvements in and relating to pumps
US11274669B2 (en) 2007-05-21 2022-03-15 Weir Minerals Australia Ltd. Relating to pumps
CN105864054A (zh) * 2007-05-21 2016-08-17 伟尔矿物澳大利亚私人有限公司 泵的改进和与泵有关的改进
US20090060708A1 (en) * 2007-07-30 2009-03-05 Thomas Hale Radial flow compressor for a turbo-supercharger
US8210793B2 (en) 2007-07-30 2012-07-03 Bosch Mahle Turbo Systems Gmbh & Co. Kg Radial flow compressor for a turbo-supercharger
EP2163769A3 (en) * 2008-09-11 2014-03-05 Honeywell International, Inc. Compressor with variable-geometry ported shroud
US20140377051A1 (en) * 2013-06-25 2014-12-25 Ford Global Technologies, Llc Turbocharger
US10107296B2 (en) * 2013-06-25 2018-10-23 Ford Global Technologies, Llc Turbocharger systems and method to prevent compressor choke
US9719518B2 (en) * 2014-11-10 2017-08-01 Honeywell International Inc. Adjustable-trim centrifugal compressor with ported shroud, and turbocharger having same
US20160131145A1 (en) * 2014-11-10 2016-05-12 Honeywell International Inc. Adjustable-trim centrifugal compressor with ported shroud, and turbocharger having same
US10724439B2 (en) * 2015-07-24 2020-07-28 Nuovo Pignone Srl Charge gas compression train for ethylene
US20180238236A1 (en) * 2015-07-24 2018-08-23 Nuovo Pignone Technologie Srl Charge gas compression train for ethylene
US10436211B2 (en) * 2016-08-15 2019-10-08 Borgwarner Inc. Compressor wheel, method of making the same, and turbocharger including the same
US20180045214A1 (en) * 2016-08-15 2018-02-15 Borgwarner, Inc. Compressor wheel, method of making the same, and turbocharger including the same
US10774677B2 (en) * 2018-05-29 2020-09-15 Ford Global Technologies, Llc Systems and methods for a variable inlet compressor
US20190368373A1 (en) * 2018-05-29 2019-12-05 Ford Global Technologies, Llc Systems and methods for a variable inlet compressor
US10774676B2 (en) * 2018-05-29 2020-09-15 Ford Global Technologies, Llc Systems and methods for a variable inlet compressor
US20190368374A1 (en) * 2018-05-29 2019-12-05 Ford Global Technologies, Llc Systems and methods for a variable inlet compressor
US20240011493A1 (en) * 2020-11-27 2024-01-11 Nuovo Pignone Tecnologie Srl Compressor for co2 cycle with at least two cascade compression stages for assuring supercritical conditions
US12338827B2 (en) * 2020-11-27 2025-06-24 Nuovo Pignone Tecnologie—S.R.L. Compressor for CO2 cycle with at least two cascade compression stages for assuring supercritical conditions
CN114396383A (zh) * 2022-01-10 2022-04-26 成都凯天电子股份有限公司 一种油汽混输系统
CN116335959A (zh) * 2023-05-26 2023-06-27 泰州康乔机电设备有限公司 一种可提高流速的盘片泵结构
CN116335959B (zh) * 2023-05-26 2023-09-05 泰州康乔机电设备有限公司 一种可提高流速的盘片泵结构

Also Published As

Publication number Publication date
GB1257567A (enrdf_load_stackoverflow) 1971-12-22
FR2003743A1 (fr) 1969-11-14
DE1912623A1 (de) 1969-10-09

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