US3804553A - Fluid machine rotor - Google Patents

Fluid machine rotor Download PDF

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Publication number
US3804553A
US3804553A US00326129A US32612973A US3804553A US 3804553 A US3804553 A US 3804553A US 00326129 A US00326129 A US 00326129A US 32612973 A US32612973 A US 32612973A US 3804553 A US3804553 A US 3804553A
Authority
US
United States
Prior art keywords
rotor
impeller
segments
wall
shoes
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
Application number
US00326129A
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English (en)
Inventor
W Hickey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AIRSONIC INTERNATIONAL Inc A CORP OF FLORIDA
TEC GROUP
Original Assignee
TEC GROUP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TEC GROUP filed Critical TEC GROUP
Priority to US00326129A priority Critical patent/US3804553A/en
Priority to GB3937273A priority patent/GB1447512A/en
Priority to CA180,546A priority patent/CA1015604A/en
Priority to DE2357764A priority patent/DE2357764A1/de
Priority to FR7343534A priority patent/FR2215088A5/fr
Priority to JP48136966A priority patent/JPS49104202A/ja
Priority to IT19541/74A priority patent/IT1006974B/it
Application granted granted Critical
Publication of US3804553A publication Critical patent/US3804553A/en
Assigned to AIRSONIC INTERNATIONAL, INC., A CORP OF FLORIDA reassignment AIRSONIC INTERNATIONAL, INC., A CORP OF FLORIDA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RICHLER HARVEY E.
Assigned to AIRSONIC INTERNATIONAL, INC., A CORP OF FLORIDA reassignment AIRSONIC INTERNATIONAL, INC., A CORP OF FLORIDA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RICHTER HARVEY E.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0055—Rotors with adjustable blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps
    • F04D3/02—Axial-flow pumps of screw type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making

Definitions

  • a primary object of this invention is to provide a new and improved fluid machine rotor of an open-center type having a unique module of removable impeller segments.
  • Another object of this invention is to provide such a rotor construction wherein the impeller segments are interchangeable as a modular unit with other impeller modules to provide varying characteristics for different applications and which permits removal and replacement of any selected one of the impeller segments of each modular unit.
  • a further object of this invention is to-provide a new and improved fluid machine rotor construction incorporating individually removable and replacement impeller segments and wherein no fasteners of a conventional threaded type are required and also wherein the entire impeller section of the rotor may be detachably mounted by readily removable keys interposed between impeller segments and releasable spring clips retaining the keys in fixed relation to the rotor.
  • Still another object of this invention is'to provide a fluid machine rotor of the type described above wherein the individual impeller segments of the rotor may be removed from either axial end of the rotor without requiring dismantling or disassembly of any seals, packings, bearings, gears and other necessary operating components associated with axial flow units of this type. Included in this object is the further aim of providing such. a new and improved rotor wherein any one of the impeller segments may be changed without having to remove the TOtOI' or the fluid machine from its working environment.
  • a still further object of this invention is to provide a new and improved fluid machine rotor having a significantly simplified design permitting a single open-center fluid machine design'to serve a multiplicity of different fluid flow functions by simply interchanging-removable modular impeller units without disturbing other parts of the machine.
  • Another object of this invention isto provide a fluid machine rotor of the type described having a compact rugged construction particularly suited for economical manufacture and quick and easy assembly and disassembly while yet providing high performance operation over an extended service life.
  • FIG. 1 is a side view, partly broken away and partly in section, showing an axial flow fluid machine incorporating a rotor of this invention
  • FIG. 2 is an exploded isometric view of the rotor components
  • FIGS. 3-13 are views, partly in section and partly broken away, taken in a plane normal to the axis of the rotor and sequentially showing the steps in assembling its impeller components.
  • Machine 10 will be understood to be an opencenter type as described in the: referenced United States patent application Ser. No. 236,263. It is also to be understood that machine 10 while shown as a single stage unit, i.e., with only one impeller stage, could be a multiple stage unit and yet readily incorporate the rotor construction of this invention.
  • Machine 10 has a drum or rotor shown with its body 12 mounted. for rotation within a cylindrical chamber 13 formed'within a housing generally designated 14. Units of this general type require a suitable power source such as a motor, not shown, for rotating an input shaft, not shown, drivingly connected to a drive gear 16 shown in mesh with a driven ring gear 18 secured by bolts such as at 20 to an outside portion of rotor 12.
  • a suitable power source such as a motor, not shown, for rotating an input shaft, not shown, drivingly connected to a drive gear 16 shown in mesh with a driven ring gear 18 secured by bolts such as at 20 to an outside portion of rotor 12.
  • housing 14 provides mountings for bearings such as at 22 supporting rotor 12 for rotation about a central rotational axis generally designated X-X.
  • the foregoing patent application also discloses a particular housing and rotor construction wherein annular end mounting flanges such as 24 are suitably secured to up posite axial ends of housing 14 to maintain seal assemblies, shown in part at 26, in operative association with rotor 12.
  • the glands and packing seals of seal assemblies 26 extend circumferentially about their respective axial end portions on the outer diameter of rotor 12 at its opposite axial ends.
  • each modular impeller unit 30 of this invention includes a plurality of impeller segments such as at 32 which are detachably mounted to the inside cylindrical wall 38 of rotor 12 and are held fixed thereto in circumferentially extending alignment by suitable means in accordance with the teachings of this invention.
  • Three substantially identical impeller segments 32 are illustrated wherein each segment 32 includes an arcuate parti-cylindrical shoe 40 which is constructed to fit precisely into a recess 42 circumferentially extending about the inside wall 38 of rotor 12 in concentric relation to its axis XX.
  • Recess 42 is dimensioned to extend in an axial direction a distance generally equal but slightly greater than the width dimension W of the impeller shoe 40.
  • each shoe 40 is designed to be equal to the radial dimension of the recess 42.
  • the radial location of the surface of each shoe 40 relative to rotor axis X-X is generally the same as that of the inside rotor wall 38, thereby minimizing fluid friction through machine 10.
  • Each impeller segment 32 has a blade 44 constructed to provide any of a variety of different performance requirements, and the blades 44 are normally cast or welded to their respective shoes 40 to project radially inwardly as an integral portion of segment 32 toward the central rotor axis X--X.
  • the arcuate length of the shoes 40 of each impeller segment 32 are dimensioned such that a predetermined spacing may be provided between the shoes 40. More specifically, to permit quick and easy assembly and removal of the impeller segments 32, the total circumferential length of the impeller shoes 40 is sufficiently less than the circumferential dimension'of the inside rotor wall 38 such that, upon circumferentially shifting the shoes 40 into abutting relation (FIG. 9), a circumferential clearance C is formed to permit the segments 32 to be pivoted radially cordingly will not interfere with one another during such swinging movement upon impeller removal.
  • the individual impeller segments 32 are contoured and dimensioned such that a projection of the major dimension of each impeller segment in a plane normal to the rotational axis XX of rotor 12 (FIGS. 413) is less than the minimum diameter of the cylindrical inside rotor wall 38 which is preferably of generally uniform diameter.
  • slots 50 may be machined, e.g., into the recessed surface of rotor 12, and keys 48 may then be fitted into axial slots 50 (FIG. 11) to serve as a rotary drive transmission member between rotor 12 and the individual impeller segments 32 regardless of the direction of angular movement of rotor 12.
  • the exposed surface 51 of each key 48 (FIG. 12) preferably conforms to the exposed surfaces of adjacent shoes 40 in smooth continuation therewith and with the internal diameter of the rotor wall 38 to further minimize any frictional drag which would otherwise be created by extension of the keys 48 into the space between the rotor impeller blades 44.
  • the axially extending end walls 46 of adjacent individual shoes 40 of impeller segments 32 are preferably formed in parallel relation to one another, and the key 48 between each adjacent pair of impeller segments 32 is provided with longitudinally extending parallel faces 52 for confronting face-to-face engagement with the end walls 46 of the impeller segments 32.
  • a pair of expandible retaining rings or spring clips 54 are shown (FIG. 13) releasably engaged with opposite ends of the keys 48.
  • the preferred embodiment shows the ends of each key 48 stepped to provide a clip receiving notch such as at 56 with the clips 54 engaging the stepped ends of each key 48 and applying a biasing force radially outwardly to retain the keys 48 and therefor the individual impeller segments 32 in assembled relation to the rotor 12.
  • a shoulder 58 is formed at the juncture between the different diameter portions of the rotor wall 38 at opposite ends of recess'42, and the spring clips 54 are dimensioned to closely fit between their respective shoulder 58 and the adjacent circumferentially extending faces 60 of the impeller segments 32 ,to thereby minimize any undesired axial shifting of the impeller segments 32 relative to rotor 12.
  • clips 54 hold the modular impeller unit 30 in assembly against gravitational forces, it being understood that the clips 54 are each of enlarged diametrical size in their expanded relaxed state, relative to the size assumed by each clip 54 upon its being positioned within rotor 12 in assembly with the keys 48.
  • suitable means such as the illustrated gear train drive 16, 18, rotary movement is transmitted to the impeller blades 44 through the keys 48 engaged in the slots 50.
  • the centrifugral forces are the controlling and largest significant forces holding the individual impeller segments 32 in fixed relation to rotor 12.
  • FIGS. 3-13 sequentially show the steps involved in assembling the impeller components of the rotor 12 of this invention.
  • FIG. 3 shows empty rotor-l2 prior to positioningthe first impeller segment 32 (FIG. 4) within the rotor in position for assembly within recess 42 (FIG. 5).
  • a second impeller segment 32' is shown being inserted into the rotor chamber in FIG. 6 and located (FIG. 7) in position for assembly prior to the third impeller segment 32' being inserted (FIG. 8) and positioned in the recess 42 (FIG. 9). Thereafter, the impeller segments 32 are moved out of abutting engagement from their position in FIG.
  • a fluid machine rotor rotatable on a supporting housing and comprising a body having an open center defined by a cylindrical inside wall surrounding a central rotational axis of the rotor, a plurality of separate impeller segments each having an arcuate particylindrical shoe for detachable mounting on the inside rotor wall and an impeller blade integrally formed on the shoe to project radially inwardly from the shoe toward the rotational axis of the rotor, selectively removable mans establishing .
  • the rotor of claim 1 wherein the cylindrical inside wall of the rotor is of generally uniform diameter, wherein the separate impeller segments are of substantially identical construction and arranged on the inside rotor wall in circumferentially aligned relation, wherein each of the impeller segments are contoured and dimensioned such that a projection of the major dimension of each impeller segment in a plane normal to the rotational axis of the rotor is less than the minimum diameter of the inside rotor wall, and wherein the total circumferential length of the arcuate shoes of the impeller segments is sufficiently less than the circumferential dimension of the inside rotor wall for selective removal and replacement of any selected one of the impeller segments relative to the rotor.
  • a fluid machine rotor rotatable on a supporting housing and comprising a body having an open center defined by a cylindrical inside wall. surrounding a central rotational axis of the rotor, aplurality of impeller segments each having an arcuate parti-cylindrical shoe engageable with the inside rotor wall and an impeller blade integrally formed on. the shoeto project radially inwardly from the shoe toward the rotational axis of the rotor, the shoes of the impellersegments each being arranged in.
  • an impeller spacer removably interposed be-- tween the shoes of the impeller segments maintaining the impeller segments against circumferential shifting relative to the rotor, and releasable retaining means securing the impeller spacer in fixed relation to the rotor.
  • the parti-cylindrical shoes of the impeller segments are each of a uniform width in a direction extending axially of the rotor, wherein the inside cylindrical wall of the rotor has a concentric recess therein of enlarged inside diameter relative to the inside wall of the rotor, the recess circumferentially extending about the inside rotor wall along an axial length thereof generally corresponding to said width of the impeller segmentsfan d wherein the arcuate shoe of each impeller segment has a circumferentially extending curvature uniformly conforming to the curvature of the recess to be fitted therein upon detachable mounting of the impeller segments relative to the inside rotor wall.
  • axial slots are formed in the recess of the inside rotor wall along the axial length of the recess, the axial slots being circumferentially spaced apart and located between adjacent impeller segments, wherein the impeller spacer comprises an elongated key removably secured within an axial slot of the recess in co-extending relation thereto and in driving engagement with the adjacent impeller segments, and wherein the retaining means includes a pair of annular spring clips releasably maintaining the keys in operative position against unintended radial ing force urging the keys radially outwardly from the center of the rotor.
  • each key is stepped to provide a clip receiving notch, wherein the clips are respectively engaged in the clip receiving notch at their respective ends of the keys and are disposed in close fitting relation between the shoulders at their respective ends of the rotor recess and the shoes of the impeller segments to minimize relative axial movement between the impeller segments and the rotor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US00326129A 1973-01-23 1973-01-23 Fluid machine rotor Expired - Lifetime US3804553A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US00326129A US3804553A (en) 1973-01-23 1973-01-23 Fluid machine rotor
GB3937273A GB1447512A (en) 1973-01-23 1973-08-21 Bladed fluid flow machine rotor
CA180,546A CA1015604A (en) 1973-01-23 1973-09-07 Fluid machine rotor
DE2357764A DE2357764A1 (de) 1973-01-23 1973-11-20 Rotor fuer stroemungsmaschine
FR7343534A FR2215088A5 (fr) 1973-01-23 1973-11-29
JP48136966A JPS49104202A (fr) 1973-01-23 1973-12-10
IT19541/74A IT1006974B (it) 1973-01-23 1974-01-18 Girante di macchina a fluido

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00326129A US3804553A (en) 1973-01-23 1973-01-23 Fluid machine rotor

Publications (1)

Publication Number Publication Date
US3804553A true US3804553A (en) 1974-04-16

Family

ID=23270932

Family Applications (1)

Application Number Title Priority Date Filing Date
US00326129A Expired - Lifetime US3804553A (en) 1973-01-23 1973-01-23 Fluid machine rotor

Country Status (7)

Country Link
US (1) US3804553A (fr)
JP (1) JPS49104202A (fr)
CA (1) CA1015604A (fr)
DE (1) DE2357764A1 (fr)
FR (1) FR2215088A5 (fr)
GB (1) GB1447512A (fr)
IT (1) IT1006974B (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176283A (en) * 1977-11-23 1979-11-27 Mclaren Richard H Water powered generator
US4178131A (en) * 1978-08-07 1979-12-11 Roy E. Roth Company Centrifugal impellers
US4772177A (en) * 1986-06-20 1988-09-20 Hayashi Seiko Co. Ltd. Screw pump
US4822308A (en) * 1987-09-21 1989-04-18 Rochester Willard G Marine steering and propulsion system
US4941802A (en) * 1989-06-02 1990-07-17 Ross John C Multi-bladed propulsion apparatus
US5181868A (en) * 1990-02-06 1993-01-26 Reinhard Gabriel Jet propulsion device for watercraft, aircraft, and circulating pumps
US5383802A (en) * 1993-11-17 1995-01-24 Maelstrom, Inc. Propulsion system
US6245007B1 (en) 1999-01-28 2001-06-12 Terumo Cardiovascular Systems Corporation Blood pump
US20070048139A1 (en) * 2005-08-23 2007-03-01 De Oliveira Joao B Cylindrical rotor with internal blades
EP1764509A1 (fr) * 2005-09-15 2007-03-21 Joao Bosco De Oliveira Rotor cylindrique avec aubes intérieures
US20110305564A1 (en) * 2009-02-24 2011-12-15 Gtec Local exhaust apparatus
WO2013135796A1 (fr) * 2012-03-15 2013-09-19 Voith Patent Gmbh Propulsion navale dotée d'une hélice sans moyeu
US20170328205A1 (en) * 2016-05-10 2017-11-16 Alan Robert Gillengerten Axial impeller with rotating housing and positionable blades

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02227597A (ja) * 1989-02-28 1990-09-10 Muneyuki Sakamoto 内羽根付きポンプ
JPH0361190U (fr) * 1990-10-02 1991-06-14
JPH05223086A (ja) * 1992-02-10 1993-08-31 Tomoharu Kataoka 回転軸を省略したポンプ装置
GB2264983A (en) * 1992-03-03 1993-09-15 Nathan Aldred Wright Propeller to delay the onset of cavitation.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1585713A (en) * 1922-05-31 1926-05-25 Westinghouse Electric & Mfg Co Turbine-blade fastening
US2153055A (en) * 1938-04-06 1939-04-04 Weissmann Henry Propeller
US2605606A (en) * 1950-05-19 1952-08-05 Alfred M Pilz Variable pitch tube propeller
GB723813A (en) * 1952-05-30 1955-02-09 Power Jets Res & Dev Ltd Improvements in or relating to bladed rotors for compressors, turbines and like fluid flow machines
GB750274A (en) * 1954-07-05 1956-06-13 Eugenio Marcon Propelling ships or boats
GB811922A (en) * 1955-03-10 1959-04-15 Rolls Royce Improvements relating to bladed rotors of axial flow fluid machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1585713A (en) * 1922-05-31 1926-05-25 Westinghouse Electric & Mfg Co Turbine-blade fastening
US2153055A (en) * 1938-04-06 1939-04-04 Weissmann Henry Propeller
US2605606A (en) * 1950-05-19 1952-08-05 Alfred M Pilz Variable pitch tube propeller
GB723813A (en) * 1952-05-30 1955-02-09 Power Jets Res & Dev Ltd Improvements in or relating to bladed rotors for compressors, turbines and like fluid flow machines
GB750274A (en) * 1954-07-05 1956-06-13 Eugenio Marcon Propelling ships or boats
GB811922A (en) * 1955-03-10 1959-04-15 Rolls Royce Improvements relating to bladed rotors of axial flow fluid machines

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176283A (en) * 1977-11-23 1979-11-27 Mclaren Richard H Water powered generator
US4178131A (en) * 1978-08-07 1979-12-11 Roy E. Roth Company Centrifugal impellers
US4772177A (en) * 1986-06-20 1988-09-20 Hayashi Seiko Co. Ltd. Screw pump
US4822308A (en) * 1987-09-21 1989-04-18 Rochester Willard G Marine steering and propulsion system
US4941802A (en) * 1989-06-02 1990-07-17 Ross John C Multi-bladed propulsion apparatus
US5181868A (en) * 1990-02-06 1993-01-26 Reinhard Gabriel Jet propulsion device for watercraft, aircraft, and circulating pumps
US5383802A (en) * 1993-11-17 1995-01-24 Maelstrom, Inc. Propulsion system
US6245007B1 (en) 1999-01-28 2001-06-12 Terumo Cardiovascular Systems Corporation Blood pump
US20070048139A1 (en) * 2005-08-23 2007-03-01 De Oliveira Joao B Cylindrical rotor with internal blades
US7470105B2 (en) 2005-08-23 2008-12-30 De Oliveira Joao Bosco Cylindrical rotor with internal blades
EP1764509A1 (fr) * 2005-09-15 2007-03-21 Joao Bosco De Oliveira Rotor cylindrique avec aubes intérieures
US20110305564A1 (en) * 2009-02-24 2011-12-15 Gtec Local exhaust apparatus
WO2013135796A1 (fr) * 2012-03-15 2013-09-19 Voith Patent Gmbh Propulsion navale dotée d'une hélice sans moyeu
US20170328205A1 (en) * 2016-05-10 2017-11-16 Alan Robert Gillengerten Axial impeller with rotating housing and positionable blades
US10508545B2 (en) * 2016-05-10 2019-12-17 Alan Robert Gillengerten Axial impeller with rotating housing and positionable blades

Also Published As

Publication number Publication date
DE2357764A1 (de) 1974-07-25
CA1015604A (en) 1977-08-16
GB1447512A (en) 1976-08-25
FR2215088A5 (fr) 1974-08-19
JPS49104202A (fr) 1974-10-02
IT1006974B (it) 1976-10-20

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AIRSONIC INTERNATIONAL, INC., A CORP OF FLORIDA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:RICHLER HARVEY E.;REEL/FRAME:004433/0072

Effective date: 19830728

Owner name: AIRSONIC INTERNATIONAL, INC., 211 COMMON WAY, JUPI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:RICHTER HARVEY E.;REEL/FRAME:004433/0070

Effective date: 19830728