US3362338A - Impellers for centrifugal pumps - Google Patents

Impellers for centrifugal pumps Download PDF

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Publication number
US3362338A
US3362338A US522664A US52266466A US3362338A US 3362338 A US3362338 A US 3362338A US 522664 A US522664 A US 522664A US 52266466 A US52266466 A US 52266466A US 3362338 A US3362338 A US 3362338A
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United States
Prior art keywords
impeller
fluid channels
inlets
impellers
disc
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
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US522664A
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English (en)
Inventor
Stethem Walter Chapple
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SA Armstrong Ltd
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SA Armstrong Ltd
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Filing date
Publication date
Application filed by SA Armstrong Ltd filed Critical SA Armstrong Ltd
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Publication of US3362338A publication Critical patent/US3362338A/en
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    • 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
    • F04D29/2222—Construction and assembly
    • F04D29/2233—Construction and assembly entirely open or stamped from one sheet

Definitions

  • a single or double stage inlet impeller for a centrifugal pump includes two impeller elements in a back-to-back relationship, the two impeller elements being arranged on 1
  • This invention relates to an impeller for use in centrifugal pumps and more particularly to an impeller element of one-piece stamped construction.
  • An object of the invention is to provide an impeller which is eflicient, simple and economical to manufacture.
  • An impeller constructed in accordance with the invention comprises a one-piece disc having alternately protruding and recessed generally radial folds which constitute fluid channels on both faces of the disc, each of the fluid channels being defined by a pair of opposed side walls and a transverse wall, and the disc having a central opening intersecting the inner ends of the fluid channels to provide inlets for the fluid channels.
  • FIG. 1 is a perspective view of an impeller element forming part of an impeller constructed in accordance with the invention
  • FIG. 2 is a perspective view, partly broken away, of a single stage, single inlet impeller constructed in accordance with the invention and having a single impeller element;
  • FIG. 3 is an elevational view of the impeller of FIG. 2;
  • FIG. 4 is a perspective view, partly broken away, of a single stage, single inlet impeller constructed in accordance with the invention and having three impeller elements;
  • FIG. 5 is a perspective view, partly broken away, of a single stage double inlet impeller constructed in accordance with theinvention and having two impeller elements;
  • FIG. 6 is a perspective view, partly broken away, of a two stage impeller constructed in accordance with the invention and having two impeller elements.
  • an impeller element 10 comprises a one-piece disc 11 that is formed with alternately protruding and recessed generally radial folds which constitute a set of fluid channels 12 on one face of the disc and another similar set of fluid channels 13 on the opposite face of the disc.
  • the fluid channels 12 are defined by side walls 14 and transverse walls 15, and the fluid channels 13 are defined by the side walls 14 and transverse walls 16.
  • the transverse walls 15 are coplanar, as are the transverse walls 16, and the two planes which respectively contain the transverse walls 15 and 16 are mutually parallel and are substantially perpendicular to the axis of rotation of the impeller.
  • the side walls 14 are substantially perpendicular to the transverse walls 15, 16.
  • a central opening 17 intersects the inner ends of the fluid channels 12, 13 to provide a series of radially disposed inlets 18 of generally rectangular shape.
  • the side Walls 14 are curved and they diverge outwardly from the inlets 18 in a spiral configuration to terminate at their outer ends at outlets 19 which are of considerably larger area than the area of the inlets 18, so that fluid velocity head at the inlets 18 will be converted to fluid pressure head at the outlets 19.
  • the impeller element 10 can be combined with a front plate 20- and a back plate 21 (see FIGS. 2 and 3) to provide a single stage, single inlet impeller.
  • the front plate 20 is secured to the transverse walls 15 and it closes the fluid channels 13 except for their inlets and outlets; the front plate 20 has a central aperture 22 bounded by a cylindrical flange 23, and the aperture 22 communicates with all the inlets 18 to provide a suction inlet for the impeller.
  • the back plate 21 is secured to the transverse walls 16 and it closes the fluid channels 12 on the opposite face of the disc, except for their inlets and outlets; the back plate 21 is provided with a central hub 24 having a threaded bore 25 for attachment to a motor shaft (not shown).
  • FIGS. 4, 5 and 6 show various other forms of impellers having a plurality of impeller elements 10.
  • the impeller of FIG. 4 comprises three impeller elements that are secured together back to back to provide fluid channels 26 of increased capacity, and it will be noted that the fluid channels 12 of one disc are aligned with the fluid channels 13 of an adjacent disc. Like the impeller of FIGS. 2 and 3, this assembly of impeller elements is provided with a front plate 20 and a back plate 21. In a similar manner, other numbers of impeller elements can be combined together to provide an impeller of the desired capacity.
  • a single stage double inlet impeller is shown in FIG. 5, and it includes two impeller elements in a back to back relationship, the two impeller elements being arranged on opposite sides of a flat, circular center plate 27. At both its opposite ends the assembly is provided with a front plate 20, and thus the impeller has two suction inlets each communicating with the inlets of the impeller element (or elements) on the near side of the center plate 27 but not with the impeller element (or elements) on the opposite side of the center plate 27.
  • a central hub 28 having a threaded bore 29 is provided on the center plate for attachment to a motor shaft. For balance, it is preferable to have the same number of impeller elements on each side of the center plate.
  • FIG. 6 shows an impeller that is substantially the same as the impeller shown in FIG. 5 except that center plate 30 is of larger diameter than the impeller discs.
  • the housing (not shown) within which the impeller is to be placed is so arranged that fluid which enters suction inlet 31 is expelled through outlets 32, flows around the center plate 30, thence through suction inlet 33 on the opposite side of the center plate, eventually to be expelled through the outlets on that side; the path of the fluid is indicated by a series of arrows.
  • the impeller elements can be formed from any material possessing sufficient strength and which is capable of being stamped or otherwise conveniently formed, such as cold rolled steel, brass, stainless steel and aluminum.
  • the various component parts of the impeller can conveniently be secured together by spotwelding, silver soldering or like methods.
  • impellers described herein are intended for use with relatively incompressible fluids, such as water, it is to be understood that principles of the invention can be applied to impellers suitable for use with compressible fluids, such as air.
  • An impeller a plurality of one-piece discs positioned coaxially, each disc having alternately protruding and recessed generally radial folds which constitute fluid channels on both sides of the disc, each of the fluid channels being defined by a pair of opposed side walls and a transverse wall, and each disc having a central opening intersecting the inner ends of the fluid channels to provide inlets for the fluid channels, a front plate secured to the outer face of one end disc to close the fluid channels of said outer face except for their inlets and outlets, said front face having a central aperture in communication with the fluid channel inlets to provide a suction inlet for the impeller, and a back plate secured to the outer face of the opposite end disc to close the fluid channels 20 of said outer face except for their inlets and outlets wherein the discs are arranged in two groups on either side of a center plate so that the fluid channel inlets of each group communicate with each other but not with those of the other group, and wherein the back plate has References Cited UNITED STATES PATENTS 929,129,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US522664A 1965-01-28 1966-01-24 Impellers for centrifugal pumps Expired - Lifetime US3362338A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA921845 1965-01-28

Publications (1)

Publication Number Publication Date
US3362338A true US3362338A (en) 1968-01-09

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US522664A Expired - Lifetime US3362338A (en) 1965-01-28 1966-01-24 Impellers for centrifugal pumps

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US (1) US3362338A (forum.php)
CH (1) CH435989A (forum.php)
GB (1) GB1140334A (forum.php)
NL (1) NL6601006A (forum.php)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478691A (en) * 1967-12-27 1969-11-18 Us Navy Quiet multivane multirow impeller for centrifugal pumps
US3690621A (en) * 1969-03-04 1972-09-12 Itsuko Tanaka Agitator
US3709635A (en) * 1970-09-18 1973-01-09 Borg Warner Ltd Hydraulic coupling
US3783483A (en) * 1970-09-18 1974-01-08 Borg Warner Ltd Method of making a fluid coupling member
JPS5160001A (en) * 1974-11-09 1976-05-25 Taichi Ogawa Enshinshikihonpuno yokusha
JPS5174209U (forum.php) * 1974-12-10 1976-06-11
US4005682A (en) * 1975-05-08 1977-02-01 Mccall William B Rotary internal combustion engine
JPS5355802U (forum.php) * 1976-10-14 1978-05-12
JPS53103208A (en) * 1977-02-18 1978-09-08 Seikow Chem Eng Mach Fiberrreinforced plastic impeller and method of producing the same
US4484860A (en) * 1982-05-17 1984-11-27 Donaldson Company, Inc. Radial tube centrifugal fan
JPS59231198A (ja) * 1983-06-15 1984-12-25 Michitsugu Ozaki 羽根車
US4819885A (en) * 1985-01-31 1989-04-11 Microfuel Corporation Means of pneumatic comminution
US4819884A (en) * 1985-01-31 1989-04-11 Microfuel Corporation Means of pneumatic comminution
US4824031A (en) * 1985-01-31 1989-04-25 Microfuel Corporation Means of pneumatic comminution
US4923124A (en) * 1985-01-31 1990-05-08 Microfuel Corporation Method of pneumatic comminution
US20030002985A1 (en) * 2001-07-02 2003-01-02 Shu-Chen Tsui Spiral fluted wheel for a pump
US20030107950A1 (en) * 2000-01-11 2003-06-12 Shepherd Ian Clarence Apparatus for mixing
US20030138323A1 (en) * 2000-05-19 2003-07-24 Lacey Chritopher George Impeller assembly
US20030198555A1 (en) * 2002-04-17 2003-10-23 Su-Chen Tsui Spiral fluted wheel for a water pump
US20040160854A1 (en) * 1995-12-05 2004-08-19 King Ronnald B. Method of mixing using mixing device having vanes with sloping edges
GB2398842A (en) * 2002-11-15 2004-09-01 Visteon Global Tech Inc Cooling fan for alternator
US20050211751A1 (en) * 2000-04-28 2005-09-29 Elliott Turbomachinery Co., Inc. Method of brazing and article made therefrom
US6971788B1 (en) 2000-08-11 2005-12-06 Site-B Company Fluid mixing device
US20080247267A1 (en) * 2007-04-09 2008-10-09 Ross Clawson Method and apparatus for cleaning rotary mixing device
US20100226773A1 (en) * 2009-03-09 2010-09-09 Grundfos Managementas Impeller for a centrifugal pump
US20120195160A1 (en) * 2009-10-23 2012-08-02 Atsushi Sugihara Agitation apparatus
US20150030441A1 (en) * 2013-07-25 2015-01-29 Asustek Computer Inc. Fan blade structure and centrifugal fan using the same
US10253786B2 (en) * 2016-06-08 2019-04-09 Nidec Corporation Blower apparatus
USD940760S1 (en) * 2020-04-04 2022-01-11 Colina Mixing pump impeller
USD958842S1 (en) * 2020-04-04 2022-07-26 Colina Mixing pump impeller vane assembly
USD979607S1 (en) * 2020-02-03 2023-02-28 W.S. Darley & Co. Impeller for a pump
USD1006056S1 (en) * 2020-02-03 2023-11-28 W.S. Darley & Co. Impeller blade for a pump
DE102022121681B3 (de) 2022-08-26 2023-12-28 Schaeffler Technologies AG & Co. KG Schaufelrad im Blechdesign; sowie Drehmomentübertragungs- und/oder Bremsvorrichtung

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU538322B2 (en) * 1979-10-29 1984-08-09 Rockwell International Inc. Composite centrifugal impeller
DE3814186A1 (de) * 1988-04-27 1989-11-09 Winkelmann & Pannhoff Gmbh Verfahren zur herstellung von foerder- und/oder leiteinrichtungen fuer stroemungsmaschinen und nach diesem verfahren hergestelltes radial-laufrad, insbesondere kuehlmittelpumpenrad fuer brennkraftmaschinen
GB2260788A (en) * 1991-10-05 1993-04-28 Jaguar Cars Pump impeller
DE4330098A1 (de) * 1993-09-06 1995-03-09 Klein Schanzlin & Becker Ag Als Blechformteil ausgebildete Leiteinrichtung
RU2142068C1 (ru) * 1997-08-11 1999-11-27 Общество "Финэкс" Рабочее колесо центробежного насоса
RU2134820C1 (ru) * 1997-08-22 1999-08-20 Трулев Алексей Владимирович Многоступенчатый центробежный насос
DE19923649A1 (de) * 1999-05-22 2000-11-23 Ksb Ag Aus Blechteilen zusammengefügtes Laufrad
DE102010020574A1 (de) 2010-05-14 2011-11-17 Ksb Aktiengesellschaft Strömungsführende Einrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE192822C (forum.php) *
US929129A (en) * 1908-10-08 1909-07-27 Bernhard Bomborn Centrifugal pump or blower.
DE368563C (de) * 1923-02-06 Adolf Gustav Von Loewe Dipl In Aus einem Stueck Blech gestanzter und gepresster Schaufelkranz fuer Lauf- und Leitraeder von Turbinen und Turbogeblaesen
GB419252A (en) * 1933-04-12 1934-11-08 Bosch Robert Improvements in or relating to ventilating fans for electrically-driven hand-tools
US2486619A (en) * 1946-09-07 1949-11-01 Hoover Co Plastic fan for suction cleaners
US2802620A (en) * 1953-02-16 1957-08-13 Gen Motors Corp Impeller for a centrifugal fan or blower
US2899129A (en) * 1959-08-11 schwaiger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE192822C (forum.php) *
DE368563C (de) * 1923-02-06 Adolf Gustav Von Loewe Dipl In Aus einem Stueck Blech gestanzter und gepresster Schaufelkranz fuer Lauf- und Leitraeder von Turbinen und Turbogeblaesen
US2899129A (en) * 1959-08-11 schwaiger
US929129A (en) * 1908-10-08 1909-07-27 Bernhard Bomborn Centrifugal pump or blower.
GB419252A (en) * 1933-04-12 1934-11-08 Bosch Robert Improvements in or relating to ventilating fans for electrically-driven hand-tools
US2486619A (en) * 1946-09-07 1949-11-01 Hoover Co Plastic fan for suction cleaners
US2802620A (en) * 1953-02-16 1957-08-13 Gen Motors Corp Impeller for a centrifugal fan or blower

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478691A (en) * 1967-12-27 1969-11-18 Us Navy Quiet multivane multirow impeller for centrifugal pumps
US3690621A (en) * 1969-03-04 1972-09-12 Itsuko Tanaka Agitator
US3709635A (en) * 1970-09-18 1973-01-09 Borg Warner Ltd Hydraulic coupling
US3783483A (en) * 1970-09-18 1974-01-08 Borg Warner Ltd Method of making a fluid coupling member
JPS5160001A (en) * 1974-11-09 1976-05-25 Taichi Ogawa Enshinshikihonpuno yokusha
JPS5174209U (forum.php) * 1974-12-10 1976-06-11
US4005682A (en) * 1975-05-08 1977-02-01 Mccall William B Rotary internal combustion engine
JPS5355802U (forum.php) * 1976-10-14 1978-05-12
JPS53103208A (en) * 1977-02-18 1978-09-08 Seikow Chem Eng Mach Fiberrreinforced plastic impeller and method of producing the same
US4484860A (en) * 1982-05-17 1984-11-27 Donaldson Company, Inc. Radial tube centrifugal fan
JPS59231198A (ja) * 1983-06-15 1984-12-25 Michitsugu Ozaki 羽根車
US4819884A (en) * 1985-01-31 1989-04-11 Microfuel Corporation Means of pneumatic comminution
US4819885A (en) * 1985-01-31 1989-04-11 Microfuel Corporation Means of pneumatic comminution
US4824031A (en) * 1985-01-31 1989-04-25 Microfuel Corporation Means of pneumatic comminution
US4923124A (en) * 1985-01-31 1990-05-08 Microfuel Corporation Method of pneumatic comminution
US7553065B2 (en) 1995-12-05 2009-06-30 Site-B Company Mixing device
US7070317B2 (en) 1995-12-05 2006-07-04 Site-B Company Method of mixing using vaned mixing device
US20040160854A1 (en) * 1995-12-05 2004-08-19 King Ronnald B. Method of mixing using mixing device having vanes with sloping edges
US7334936B2 (en) * 1995-12-05 2008-02-26 Site-B Company Mixing device and method of mixing
US20090268545A1 (en) * 1995-12-05 2009-10-29 King Ronnald B Mixing device and method of mixing
US20030107950A1 (en) * 2000-01-11 2003-06-12 Shepherd Ian Clarence Apparatus for mixing
US7407715B2 (en) 2000-04-28 2008-08-05 Elliott Company Method of brazing and article made therefrom
EP1294528A4 (en) * 2000-04-28 2007-08-01 Elliott Turbo METHOD OF SOLDERING AND MANUFACTURING WORKPIECE THEREOF
US20050211751A1 (en) * 2000-04-28 2005-09-29 Elliott Turbomachinery Co., Inc. Method of brazing and article made therefrom
US20030138323A1 (en) * 2000-05-19 2003-07-24 Lacey Chritopher George Impeller assembly
US6971788B1 (en) 2000-08-11 2005-12-06 Site-B Company Fluid mixing device
US7226205B2 (en) 2000-08-11 2007-06-05 Site-B Company Fluid mixing device
US20030002985A1 (en) * 2001-07-02 2003-01-02 Shu-Chen Tsui Spiral fluted wheel for a pump
US6638020B1 (en) * 2002-04-17 2003-10-28 Sea Chung Electric Co., Ltd. Spiral fluted wheel for a water pump
US20030198555A1 (en) * 2002-04-17 2003-10-23 Su-Chen Tsui Spiral fluted wheel for a water pump
GB2398842B (en) * 2002-11-15 2005-04-06 Visteon Global Tech Inc Alternator fan
GB2398842A (en) * 2002-11-15 2004-09-01 Visteon Global Tech Inc Cooling fan for alternator
US20080247267A1 (en) * 2007-04-09 2008-10-09 Ross Clawson Method and apparatus for cleaning rotary mixing device
US7473026B2 (en) * 2007-04-09 2009-01-06 Site-B Company Method for cleaning a rotary mixing device with a cleaning shield
CN101832291A (zh) * 2009-03-09 2010-09-15 格伦德福斯管理联合股份公司 用于离心泵的叶轮
US8740569B2 (en) 2009-03-09 2014-06-03 Grundfos Management A/S Impeller for a centrifugal pump
US20100226773A1 (en) * 2009-03-09 2010-09-09 Grundfos Managementas Impeller for a centrifugal pump
CN101832291B (zh) * 2009-03-09 2015-05-13 格伦德福斯管理联合股份公司 用于离心泵的叶轮
EP2228541A1 (de) * 2009-03-09 2010-09-15 Grundfos Management A/S Laufrad für eine Kreiselpumpe
US8662740B2 (en) * 2009-10-23 2014-03-04 Toyota Jidosha Kabushiki Kaisha Agitation apparatus
US20120195160A1 (en) * 2009-10-23 2012-08-02 Atsushi Sugihara Agitation apparatus
US20150030441A1 (en) * 2013-07-25 2015-01-29 Asustek Computer Inc. Fan blade structure and centrifugal fan using the same
US9523375B2 (en) * 2013-07-25 2016-12-20 Asustek Computer Inc. Fan blade structure and centrifugal fan using the same
US10253786B2 (en) * 2016-06-08 2019-04-09 Nidec Corporation Blower apparatus
USD979607S1 (en) * 2020-02-03 2023-02-28 W.S. Darley & Co. Impeller for a pump
USD1006056S1 (en) * 2020-02-03 2023-11-28 W.S. Darley & Co. Impeller blade for a pump
USD940760S1 (en) * 2020-04-04 2022-01-11 Colina Mixing pump impeller
USD958842S1 (en) * 2020-04-04 2022-07-26 Colina Mixing pump impeller vane assembly
DE102022121681B3 (de) 2022-08-26 2023-12-28 Schaeffler Technologies AG & Co. KG Schaufelrad im Blechdesign; sowie Drehmomentübertragungs- und/oder Bremsvorrichtung

Also Published As

Publication number Publication date
NL6601006A (forum.php) 1966-07-29
GB1140334A (en) 1969-01-15
CH435989A (fr) 1967-05-15

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