US2658455A - Impeller with center intake - Google Patents
Impeller with center intake Download PDFInfo
- Publication number
- US2658455A US2658455A US11097A US1109748A US2658455A US 2658455 A US2658455 A US 2658455A US 11097 A US11097 A US 11097A US 1109748 A US1109748 A US 1109748A US 2658455 A US2658455 A US 2658455A
- Authority
- US
- United States
- Prior art keywords
- impeller
- vanes
- ribs
- hub
- center intake
- Prior art date
- 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
Links
- 239000007788 liquid Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
-
- 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
- F04D29/2205—Conventional flow pattern
- F04D29/2211—More than one set of flow passages
Definitions
- This invention relates to centrifugal pumps and has particular reference to improved impeller constructions therefor.
- open impellers are desirable for single suction pumps operated at high speeds.
- the diameters of such open impellers are necessarily small because unreinforced vanes of large diameter impellers would flutter both during machining and during oporation.
- the conventional manner of reinforcing and balancing large diameter open impellers has involved extending the impeller hub into a circular or radial rib providing balancing holes in the rib opposite the impeller eye and providing narrow vanes at the back of the rib as viewed from the impeller eye. Balancing holes are adequate, however, to assure sufficient flow only for narrow vanes; but narrow vanes create high turbulence and therefore cause erosion and loss of head resulting in reduced hydraulic efficiency.
- high speed single suction impellers are constructed in such a way that the liquid entering the impeller eye is split into two streams while passing into the impeller, the streams not necessarily being equal in volume.
- This splitting is achieved by providing a circular rib of adequate strength to withstand the centrifugal forces of high speed of rotation as well as to reinforce the vanes of the impeller without being in direct contact with the impeller hub.
- Figure 1 is a section illustrating the incorporation of the invention in a single suction impeller the vanes being shown in circumferential projection for clarity;
- Figure 2 is an elevation showing the inlet side of the impeller of Figure 1.
- Vanes M are provided which are supported by an annular member I6 providing ribs between the adjacent vanes the edges ll of which serve to divide the inflowing stream into two portions flowing on opposite sides of these ribs.
- the ribs 16, as will be evident from Figure 1, provide for smooth guidance of the two flows adjacent to the walls 8 and ll! of the casing, the hub 2 being arranged as indicated at 20 to form contoured shrouds or side plates for short lengths between the radially inward portions of the backs of the vanes which guide the liquid, providing smooth flow in cooperation with the housing wall ii Balancing openings R8 are provided through the ribs It to equalize pressures at the front and back of the ribs, and provide improved hydraulic balance.
- the impeller thus constructed is particularly adapted for high speed boiler feed pump use. Maintenance of similar fiow conditions on both sides of the ribs is achieved and thereby the hydraulic efliciency is substantially improved with reduction of erosive conditions as compared with impellers heretofore constructed. It will be evident that the vanes are Well supported and consequently high speed operation may be achieved Without fluttering of the vanes or their destruction by centrifugal forces.
- the construction is such that the volumes of liquid flowing on the two sides of reinforcing ribs are substantially equal but this is not absolutely essential. It will be noted that the inner diameter of the rib arrangement is smaller than the maximum diameter of the portion 20 of the hub 2 so that the two jointly provide shrouding for a portion of the path of liquid flow at the back of the rib.
- a centrifugal impeller of the high speed single suction type having a central inlet comprising a hub, radially and axially extending vanes carried by the hub, and annular means radially spaced from the hub and extending along the vanes and dividing the vanes axially of the impeller and providing ribs extending between the vanes, said ribs and vanes forming channels of dissimilar length on opposite sides of said annular member, the axial extremities of said hub, vanes and annular member providing the central inlet for said impeller, said ribs having portions extending axially toward said central inlet for splitting a stream of fluid entering the impeller, each rib being provided with a plurality of passages interconnecting said channels, said passages being disposed between the vanes and being arranged in radially spaced relation to the impeller axis at successively greater distances therefrom to permit pressure equalizing flow between said channels on opposite sides of said ribs at intervals at said successively greater distances.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Nov. 10, 1953 R. SEINFELD IMPELLER WITH CENTER INTAKE Filed Feb. 26, 1948 JNVENTOR. LUDW/K R. SE/NFELD d dwi ag ATTORNEY ?at ented Nov. iii,
IMPELLER WITH CENTER INTAKE Ludwik R. Seinfeld, New Providence Township, Union County, N. J., assignor to De Laval Steam Turbine Company, Trenton, N. J., a corporation of New Jersey Application February 26, 1948, Serial No. 11,097
1 Claim.
This invention relates to centrifugal pumps and has particular reference to improved impeller constructions therefor.
It is well known that open impellers are desirable for single suction pumps operated at high speeds. The diameters of such open impellers, however, are necessarily small because unreinforced vanes of large diameter impellers would flutter both during machining and during oporation. The conventional manner of reinforcing and balancing large diameter open impellers has involved extending the impeller hub into a circular or radial rib providing balancing holes in the rib opposite the impeller eye and providing narrow vanes at the back of the rib as viewed from the impeller eye. Balancing holes are adequate, however, to assure sufficient flow only for narrow vanes; but narrow vanes create high turbulence and therefore cause erosion and loss of head resulting in reduced hydraulic efficiency.
In accordance with the present invention high speed single suction impellers are constructed in such a way that the liquid entering the impeller eye is split into two streams while passing into the impeller, the streams not necessarily being equal in volume. This splitting is achieved by providing a circular rib of adequate strength to withstand the centrifugal forces of high speed of rotation as well as to reinforce the vanes of the impeller without being in direct contact with the impeller hub.
The foregoing general object of the invention as well as specific objects relating to details will become apparent from the following description read in conjunction with the accompanying drawing in which:
Figure 1 is a section illustrating the incorporation of the invention in a single suction impeller the vanes being shown in circumferential projection for clarity; and
Figure 2 is an elevation showing the inlet side of the impeller of Figure 1.
There is indicated at 2 the hub of an impeller 4 of single suction type which may be included in a conventional housing which is indicated by the construction lines 8 and I0. Discharge takes place into a conventional diffuser passage indicated at I2.
Vanes M are provided which are supported by an annular member I6 providing ribs between the adjacent vanes the edges ll of which serve to divide the inflowing stream into two portions flowing on opposite sides of these ribs. The ribs 16, as will be evident from Figure 1, provide for smooth guidance of the two flows adjacent to the walls 8 and ll! of the casing, the hub 2 being arranged as indicated at 20 to form contoured shrouds or side plates for short lengths between the radially inward portions of the backs of the vanes which guide the liquid, providing smooth flow in cooperation with the housing wall ii Balancing openings R8 are provided through the ribs It to equalize pressures at the front and back of the ribs, and provide improved hydraulic balance.
It will be seen that the axial extremities of the hub, vanes and annular member provide a central inlet for the fluid which then discharges from the periphery of the impeller.
The impeller thus constructed is particularly adapted for high speed boiler feed pump use. Maintenance of similar fiow conditions on both sides of the ribs is achieved and thereby the hydraulic efliciency is substantially improved with reduction of erosive conditions as compared with impellers heretofore constructed. It will be evident that the vanes are Well supported and consequently high speed operation may be achieved Without fluttering of the vanes or their destruction by centrifugal forces.
Desirably the construction is such that the volumes of liquid flowing on the two sides of reinforcing ribs are substantially equal but this is not absolutely essential. It will be noted that the inner diameter of the rib arrangement is smaller than the maximum diameter of the portion 20 of the hub 2 so that the two jointly provide shrouding for a portion of the path of liquid flow at the back of the rib.
It will be clear that various modifications of the invention may be made Without departing therefrom as defined in the following claim.
What I claim and desire to protect by Letters Patent is:
A centrifugal impeller of the high speed single suction type having a central inlet comprising a hub, radially and axially extending vanes carried by the hub, and annular means radially spaced from the hub and extending along the vanes and dividing the vanes axially of the impeller and providing ribs extending between the vanes, said ribs and vanes forming channels of dissimilar length on opposite sides of said annular member, the axial extremities of said hub, vanes and annular member providing the central inlet for said impeller, said ribs having portions extending axially toward said central inlet for splitting a stream of fluid entering the impeller, each rib being provided with a plurality of passages interconnecting said channels, said passages being disposed between the vanes and being arranged in radially spaced relation to the impeller axis at successively greater distances therefrom to permit pressure equalizing flow between said channels on opposite sides of said ribs at intervals at said successively greater distances.
LUDWIK R. SEINEELD.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 445,919 Brown Feb. 3, 1891 Number Number 28,980
Name Date Orton July 28, 1896 McMurdie Mar. 14, 1916 Weil Aug. 5, 1924 McMurdie Sept. 13, 1932 Kiep et a1 Apr. 18, 1933 Bennett Aug. 5, 1947 FOREIGN PATENTS Country Date Great Britain A. D. 1911
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11097A US2658455A (en) | 1948-02-26 | 1948-02-26 | Impeller with center intake |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11097A US2658455A (en) | 1948-02-26 | 1948-02-26 | Impeller with center intake |
Publications (1)
Publication Number | Publication Date |
---|---|
US2658455A true US2658455A (en) | 1953-11-10 |
Family
ID=21748876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11097A Expired - Lifetime US2658455A (en) | 1948-02-26 | 1948-02-26 | Impeller with center intake |
Country Status (1)
Country | Link |
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US (1) | US2658455A (en) |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2997959A (en) * | 1958-01-24 | 1961-08-29 | Westinghouse Electric Corp | Pump |
US3013501A (en) * | 1956-12-27 | 1961-12-19 | Skoglund & Olson Ab | Centrifugal impeller |
DE1140460B (en) * | 1959-09-04 | 1962-11-29 | Henschel Werke Ag | High-speed high-pressure turbo pump of single-stage design |
US3411759A (en) * | 1964-08-14 | 1968-11-19 | Aluminum Lab Ltd | Apparatus for splashing liquids |
US3465523A (en) * | 1967-09-11 | 1969-09-09 | John J Clark Jr | Hydraulic power unit |
US3659957A (en) * | 1969-10-27 | 1972-05-02 | Vann Yuen | Apparatus for atomizing liquid materials |
US3693913A (en) * | 1970-08-24 | 1972-09-26 | Lockheed Aircraft Corp | Fluid flow control device |
US4060337A (en) * | 1976-10-01 | 1977-11-29 | General Motors Corporation | Centrifugal compressor with a splitter shroud in flow path |
US4086020A (en) * | 1974-06-07 | 1978-04-25 | Hitachi, Ltd. | Hydraulic machine |
US4171928A (en) * | 1977-09-19 | 1979-10-23 | The Garrett Corporation | Foil bearing turbomachine |
US4778341A (en) * | 1986-08-06 | 1988-10-18 | Nuovo-Pignone-Industrie Meccaniche E Fonderia S.P.A. | Centrifugal pump particularly suitable for pumping fluids with a high gas content |
US4890980A (en) * | 1988-08-08 | 1990-01-02 | Ingersoll-Rand Company | Centrifugal pump |
US5106263A (en) * | 1989-09-22 | 1992-04-21 | Jidosha Denki Kogyo K.K. | Centrifugal pump with high efficiency impeller |
US5511881A (en) * | 1995-01-06 | 1996-04-30 | General Signal Corporation | Impeller system and method for enhanced-flow pumping of liquids |
US5628616A (en) * | 1994-12-19 | 1997-05-13 | Camco International Inc. | Downhole pumping system for recovering liquids and gas |
US6523995B2 (en) | 2001-03-23 | 2003-02-25 | Chemineer, Inc. | In-tank mixing system and associated radial impeller |
US20040202539A1 (en) * | 2001-05-09 | 2004-10-14 | Andreas Blank | Rotor disk |
US20040219013A1 (en) * | 2003-03-24 | 2004-11-04 | Reinhold Hopfensperger | Radial fan |
WO2005012732A1 (en) * | 2003-08-04 | 2005-02-10 | Sulzer Pumpen Ag | Blade wheel for a pump |
US20060280631A1 (en) * | 2005-06-10 | 2006-12-14 | Delta Electronics, Inc. | Centrifugal pump |
US20080050239A1 (en) * | 2004-03-01 | 2008-02-28 | Matthias Brunig | Propeller Blower, Shell Propeller |
US20090142191A1 (en) * | 2004-10-09 | 2009-06-04 | Ebm-Papst St. Georgen Gmbh & Co.Kg | Fan Comprising A Fan Wheel |
US20090238680A1 (en) * | 2004-12-17 | 2009-09-24 | Fevzi Yildirim | Pumping unit |
US20110012356A1 (en) * | 2008-02-22 | 2011-01-20 | Douglas Burnham | Generator |
EP2411156A1 (en) * | 2009-03-25 | 2012-02-01 | Woodward, Inc. | Centrifugal impeller with controlled force balance |
US20120051885A1 (en) * | 2009-05-11 | 2012-03-01 | Francois Danguy | Double exhaust centrifugal pump |
US20150240833A1 (en) * | 2012-06-19 | 2015-08-27 | Nuovo Pignone Srl | Centrifugal compressor impeller cooling |
US20150267711A1 (en) * | 2014-03-20 | 2015-09-24 | Flowserve Management Company | Centrifugal pump impellor with novel balancing holes that improve pump efficiency |
WO2016033667A1 (en) * | 2014-09-01 | 2016-03-10 | Mundial S/A Produtos De Consumo | A floating-bearing motor pump cooled by a circulating fluid |
US20160146214A1 (en) * | 2014-11-20 | 2016-05-26 | Baker Hughes Incorporated | Nozzle-Shaped Slots in Impeller Vanes |
US20160363134A1 (en) * | 2014-03-05 | 2016-12-15 | Mitsubishi Heavy Industries, Ltd. | Rotary fluid element and method of correcting unbalance of rotary fluid element |
US20170058911A1 (en) * | 2015-08-24 | 2017-03-02 | Woodward, Inc. | Centrifugal pump with serrated impeller |
US20180045213A1 (en) * | 2015-03-20 | 2018-02-15 | Ebara Corporation | Impeller for centrifugal pumps |
US20180135643A1 (en) * | 2015-05-19 | 2018-05-17 | Hitachi, Ltd. | Centrifugal Compressor |
US11022073B1 (en) * | 2015-04-12 | 2021-06-01 | Rocket Lab Usa, Inc. | Rocket engine turbopump with coolant passage in impeller central hub |
RU213255U1 (en) * | 2022-03-03 | 2022-09-01 | федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") | Radial turbine impeller |
US11542953B2 (en) * | 2020-07-15 | 2023-01-03 | Kabushiki Kaisha Toyota Jidoshokki | Centrifugal compressor |
US20230243292A1 (en) * | 2022-01-31 | 2023-08-03 | Brp-Rotax Gmbh & Co. Kg | Turbocharger |
US11788545B2 (en) * | 2020-09-30 | 2023-10-17 | Kabushiki Kaisha Toyota Jidoshokki | Centrifugal compressor |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US445919A (en) * | 1891-02-03 | Centrifugal pump | ||
US564897A (en) * | 1896-07-28 | Half to john richards | ||
GB191128980A (en) * | 1911-12-22 | 1912-09-19 | Warwick Machinery Co 1908 | Improvements in and relating to Turbo-compressors or Centrifugal Pumps. |
US1175162A (en) * | 1914-04-20 | 1916-03-14 | Francis J Mcmurdie | Fan-blower. |
US1503776A (en) * | 1922-04-01 | 1924-08-05 | Weil Ludwig | Centrifugal pump or blower |
US1877347A (en) * | 1927-08-19 | 1932-09-13 | Clarage Fan Company | Fan wheel |
US1904054A (en) * | 1930-11-11 | 1933-04-18 | Kiep Johann Nikolaus | Hydraulic coupling |
US2425171A (en) * | 1944-12-04 | 1947-08-05 | Claude C Bennett | Dynamometer |
-
1948
- 1948-02-26 US US11097A patent/US2658455A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US445919A (en) * | 1891-02-03 | Centrifugal pump | ||
US564897A (en) * | 1896-07-28 | Half to john richards | ||
GB191128980A (en) * | 1911-12-22 | 1912-09-19 | Warwick Machinery Co 1908 | Improvements in and relating to Turbo-compressors or Centrifugal Pumps. |
US1175162A (en) * | 1914-04-20 | 1916-03-14 | Francis J Mcmurdie | Fan-blower. |
US1503776A (en) * | 1922-04-01 | 1924-08-05 | Weil Ludwig | Centrifugal pump or blower |
US1877347A (en) * | 1927-08-19 | 1932-09-13 | Clarage Fan Company | Fan wheel |
US1904054A (en) * | 1930-11-11 | 1933-04-18 | Kiep Johann Nikolaus | Hydraulic coupling |
US2425171A (en) * | 1944-12-04 | 1947-08-05 | Claude C Bennett | Dynamometer |
Cited By (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3013501A (en) * | 1956-12-27 | 1961-12-19 | Skoglund & Olson Ab | Centrifugal impeller |
US2997959A (en) * | 1958-01-24 | 1961-08-29 | Westinghouse Electric Corp | Pump |
DE1140460B (en) * | 1959-09-04 | 1962-11-29 | Henschel Werke Ag | High-speed high-pressure turbo pump of single-stage design |
US3411759A (en) * | 1964-08-14 | 1968-11-19 | Aluminum Lab Ltd | Apparatus for splashing liquids |
US3465523A (en) * | 1967-09-11 | 1969-09-09 | John J Clark Jr | Hydraulic power unit |
US3659957A (en) * | 1969-10-27 | 1972-05-02 | Vann Yuen | Apparatus for atomizing liquid materials |
US3693913A (en) * | 1970-08-24 | 1972-09-26 | Lockheed Aircraft Corp | Fluid flow control device |
US4086020A (en) * | 1974-06-07 | 1978-04-25 | Hitachi, Ltd. | Hydraulic machine |
US4060337A (en) * | 1976-10-01 | 1977-11-29 | General Motors Corporation | Centrifugal compressor with a splitter shroud in flow path |
US4171928A (en) * | 1977-09-19 | 1979-10-23 | The Garrett Corporation | Foil bearing turbomachine |
US4778341A (en) * | 1986-08-06 | 1988-10-18 | Nuovo-Pignone-Industrie Meccaniche E Fonderia S.P.A. | Centrifugal pump particularly suitable for pumping fluids with a high gas content |
US4890980A (en) * | 1988-08-08 | 1990-01-02 | Ingersoll-Rand Company | Centrifugal pump |
FR2635147A1 (en) * | 1988-08-08 | 1990-02-09 | Ingersoll Rand Co | CENTRIFUGAL PUMP COMPRISING AN IMPROVED PRESSURE BALANCING DEVICE |
DE3925890A1 (en) * | 1988-08-08 | 1990-02-15 | Ingersoll Rand Co | ROTARY PUMP |
DE3925890C2 (en) * | 1988-08-08 | 1995-07-06 | Ingersoll Dresser Pump Co | Impeller for a centrifugal pump |
US5106263A (en) * | 1989-09-22 | 1992-04-21 | Jidosha Denki Kogyo K.K. | Centrifugal pump with high efficiency impeller |
US5628616A (en) * | 1994-12-19 | 1997-05-13 | Camco International Inc. | Downhole pumping system for recovering liquids and gas |
US5511881A (en) * | 1995-01-06 | 1996-04-30 | General Signal Corporation | Impeller system and method for enhanced-flow pumping of liquids |
US6523995B2 (en) | 2001-03-23 | 2003-02-25 | Chemineer, Inc. | In-tank mixing system and associated radial impeller |
US20040202539A1 (en) * | 2001-05-09 | 2004-10-14 | Andreas Blank | Rotor disk |
US20040219013A1 (en) * | 2003-03-24 | 2004-11-04 | Reinhold Hopfensperger | Radial fan |
US7179050B2 (en) * | 2003-03-24 | 2007-02-20 | Ebm-Papst Landshut Gmbh | Radial fan |
CN100449155C (en) * | 2003-08-04 | 2009-01-07 | 苏舍泵有限公司 | Blade wheel for a pump |
US20080213093A1 (en) * | 2003-08-04 | 2008-09-04 | Sulzer Pumpen Ag | Impeller for Pumps |
WO2005012732A1 (en) * | 2003-08-04 | 2005-02-10 | Sulzer Pumpen Ag | Blade wheel for a pump |
US8444370B2 (en) * | 2003-08-04 | 2013-05-21 | Sulzer Pumpen Ag | Impeller for pumps |
US20080050239A1 (en) * | 2004-03-01 | 2008-02-28 | Matthias Brunig | Propeller Blower, Shell Propeller |
US8105011B2 (en) * | 2004-10-09 | 2012-01-31 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan comprising a fan wheel |
US20090142191A1 (en) * | 2004-10-09 | 2009-06-04 | Ebm-Papst St. Georgen Gmbh & Co.Kg | Fan Comprising A Fan Wheel |
US20090238680A1 (en) * | 2004-12-17 | 2009-09-24 | Fevzi Yildirim | Pumping unit |
US20060280631A1 (en) * | 2005-06-10 | 2006-12-14 | Delta Electronics, Inc. | Centrifugal pump |
US20110012356A1 (en) * | 2008-02-22 | 2011-01-20 | Douglas Burnham | Generator |
US8618687B2 (en) * | 2008-02-22 | 2013-12-31 | Douglas Burnham | Water inlet generator |
EP2411156A1 (en) * | 2009-03-25 | 2012-02-01 | Woodward, Inc. | Centrifugal impeller with controlled force balance |
EP2411156A4 (en) * | 2009-03-25 | 2013-11-13 | Woodward Inc | Centrifugal impeller with controlled force balance |
US20120051885A1 (en) * | 2009-05-11 | 2012-03-01 | Francois Danguy | Double exhaust centrifugal pump |
US9829008B2 (en) * | 2012-06-19 | 2017-11-28 | Nuovo Pignone Srl | Centrifugal compressor impeller cooling |
US20150240833A1 (en) * | 2012-06-19 | 2015-08-27 | Nuovo Pignone Srl | Centrifugal compressor impeller cooling |
US20160363134A1 (en) * | 2014-03-05 | 2016-12-15 | Mitsubishi Heavy Industries, Ltd. | Rotary fluid element and method of correcting unbalance of rotary fluid element |
US10465713B2 (en) * | 2014-03-05 | 2019-11-05 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Rotary fluid element and method of correcting unbalance of rotary fluid element |
US20150267711A1 (en) * | 2014-03-20 | 2015-09-24 | Flowserve Management Company | Centrifugal pump impellor with novel balancing holes that improve pump efficiency |
US9689402B2 (en) * | 2014-03-20 | 2017-06-27 | Flowserve Management Company | Centrifugal pump impellor with novel balancing holes that improve pump efficiency |
US9951786B2 (en) | 2014-03-20 | 2018-04-24 | Flowserve Management Company | Centrifugal pump impellor with novel balancing holes that improve pump efficiency |
WO2016033667A1 (en) * | 2014-09-01 | 2016-03-10 | Mundial S/A Produtos De Consumo | A floating-bearing motor pump cooled by a circulating fluid |
US20160146214A1 (en) * | 2014-11-20 | 2016-05-26 | Baker Hughes Incorporated | Nozzle-Shaped Slots in Impeller Vanes |
US9777741B2 (en) * | 2014-11-20 | 2017-10-03 | Baker Hughes Incorporated | Nozzle-shaped slots in impeller vanes |
US20180045213A1 (en) * | 2015-03-20 | 2018-02-15 | Ebara Corporation | Impeller for centrifugal pumps |
US11022073B1 (en) * | 2015-04-12 | 2021-06-01 | Rocket Lab Usa, Inc. | Rocket engine turbopump with coolant passage in impeller central hub |
US20180135643A1 (en) * | 2015-05-19 | 2018-05-17 | Hitachi, Ltd. | Centrifugal Compressor |
US20170058911A1 (en) * | 2015-08-24 | 2017-03-02 | Woodward, Inc. | Centrifugal pump with serrated impeller |
US10907647B2 (en) * | 2015-08-24 | 2021-02-02 | Woodward, Inc. | Centrifugal pump with serrated impeller |
US11542953B2 (en) * | 2020-07-15 | 2023-01-03 | Kabushiki Kaisha Toyota Jidoshokki | Centrifugal compressor |
US11788545B2 (en) * | 2020-09-30 | 2023-10-17 | Kabushiki Kaisha Toyota Jidoshokki | Centrifugal compressor |
US20230243292A1 (en) * | 2022-01-31 | 2023-08-03 | Brp-Rotax Gmbh & Co. Kg | Turbocharger |
RU213255U1 (en) * | 2022-03-03 | 2022-09-01 | федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") | Radial turbine impeller |
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