US3440969A - Impeller having a centrifugal fluid handling means having steadily curving vanes - Google Patents

Impeller having a centrifugal fluid handling means having steadily curving vanes Download PDF

Info

Publication number
US3440969A
US3440969A US738275A US3440969DA US3440969A US 3440969 A US3440969 A US 3440969A US 738275 A US738275 A US 738275A US 3440969D A US3440969D A US 3440969DA US 3440969 A US3440969 A US 3440969A
Authority
US
United States
Prior art keywords
vane
angle
impeller
equation
fluid
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
US738275A
Other languages
English (en)
Inventor
Masukichi Kondo
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3440969A publication Critical patent/US3440969A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
    • F01D5/043—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type
    • F01D5/048—Form or construction
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
    • 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
    • Y10T29/49329—Centrifugal blower or fan

Definitions

  • a velocity triangle Composed of oints of Y and Y AY in radius.
  • the vane angle decreases or increases steadily at a uniform rate from the point of origin of the vane to the outer periphery.
  • This invention relates to a vane for an impeller for a pump, such as a centrifugal pump, a centrifugal blower, or the like, and for a centrifugal fluid driven device, such as a water turbine, a torque convertor, or the like.
  • a pump such as a centrifugal pump, a centrifugal blower, or the like
  • a centrifugal fluid driven device such as a water turbine, a torque convertor, or the like.
  • the main factors which regulate the value a are radial acceleration dv /dr and the progressive change dfi/dr of the vane angle ,6 along the vane.
  • FIG. 1 is a diagram showing the relationship between the relative and absolute path of a fluid in an impeller
  • FIG. 2 is a diagram of a velocity triangle showing the velocity relationships in the impeller
  • FIGS. 3A and 3B are diagrams of velocity triangles at poirlits r and r-l-dr of the radius of the impeller, respective y;
  • FIG. 4A is a diagram showing the defects of a single arc vane where the outlet angle 5 is larger than the inlet angle [31;
  • FIG. 4B is a diagram similar to that of FIG. 4A where inlet angle ,8 is greater than outlet angle (3
  • FIG. 5 is a diagram showing the defects of a vane composed of two arcs where ,8 fi
  • FIG. 7 is a diagram showing the radius of curvature of a vane
  • FIG. 8 is a diagram illustrating the differences between the arc vanes and the vane according to the present invention where ⁇ 3 B
  • FIG. 9 is a diagram similar to FIG. 8 where ⁇ 3 fl
  • FIG. 10 is a diagram showing the differences between a vane based upon successive calculations, as used in connection with FIG. 6, and a vane according to the present invention.
  • FIG. 11 is a diagram showing the differences between vane profiles according to the present invention where 51 l 2 and I 1 B2- DEFINITIONS Throughout the specification and claims the following terms will have the meanings as set forth. Reference is made to FIGS. 1 and 2 for the vector and locations of the points at which the various measurements or vectors are located.
  • the energy transmitted is proportional to the circumferential acceleration a of the fluid.
  • FIG. 2 is decreased, and no is increased correspondingly.
  • Equation 5 is a new theoretical equation according to the invention.
  • Equation 6 The value a, can thus be calculated by this theoretical equation.
  • the equation with values p and dv/dt is made equal to an equation which can be numerically solved bv making Equation 6 equal to Equation 5.
  • the next problem to be solved is to establish a method of forming the vane in which the vane angle is steadilv increased or steadily decreased at a uniform rate.
  • FIGS. 4A and 4B Single arc vanes in which the vane has ti fl and B B are shown in FIGS. 4A and 4B, respectively.
  • the central angle between the center 0 of the impeller axis and the center 0' of the arc is equal to vane-angle 3.
  • a steady increase or decrease of the angle 9 does not occur, as is clearly shown in FIGS. 4A or 4B.
  • FIG. 6 A component in the circumferential direction along a minute distance As on the vane is r A and a component in the radial direction is Ar.
  • the points I), c and d in FIG. 6 are determined successively by calculating Ar for every central angle A0 by means of the equation:
  • Equation 8 is correct only for the mean position of the points x and x-l-l.
  • the correct equation is as follows:
  • Equation 8' fl and r in Equation 8' are numerical values which can be determined only after calculation is made, and are unknown value. Equation 8' therefore is an equation which is impossible to solve numerically.
  • the value p is proportional to the product of the radius and sec B. Since radius r and vane-angle B at each point on the vane are different respectively, the radium of curvature p differs at each adjacent point on the vane, and increases or decreases gradually.
  • the angle formed by line r and line p is equal to the angle ,8 (see FIG. 7).
  • the angle B at each adjacent point on the vane is different from the angle at an adjacent point, as shown by the Equation 9-A or 9B.
  • the center point of the radius of curvature for each point of the vane is thus different from that for the adjacent point and changes regularly.
  • FIG. 8 the profiles of the vane shown in FIGS. 4A and 5 are shown in dotted lines for comparison.
  • the value r determined by the successive calculation method is smaller with a gradual increase of the angle [3 then the values corresponding to r when the vane-profile according to the present invention has a gradual increase of the angle [3.
  • 0 the central angle between the origin of the vane at one of said peripheries and a point x along the vane;
  • B the vane-angle at said point x;
  • B the vane-angle at the origin of the vane; and
  • ms 0/fi fl References Cited UNITED STATES PATENTS 1,509,653 9/1924 Kaplan 103-115 963,378 7/1910 Lorenz 1031 15 1,906,180 4/1933 Rees 103-115 909,863 1/1909 Bowie 230--127 2,767,906 10/1956 Doyle 230134.45 3,226,085 12/1965 Bachl 1031 15 FOREIGN PATENTS 1,324 1863 Great Britain.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
US738275A 1965-03-03 1968-06-19 Impeller having a centrifugal fluid handling means having steadily curving vanes Expired - Lifetime US3440969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1226865 1965-03-03

Publications (1)

Publication Number Publication Date
US3440969A true US3440969A (en) 1969-04-29

Family

ID=11800603

Family Applications (1)

Application Number Title Priority Date Filing Date
US738275A Expired - Lifetime US3440969A (en) 1965-03-03 1968-06-19 Impeller having a centrifugal fluid handling means having steadily curving vanes

Country Status (4)

Country Link
US (1) US3440969A (de)
CH (1) CH519109A (de)
DE (1) DE1528730B2 (de)
GB (1) GB1144445A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964841A (en) * 1974-09-18 1976-06-22 Sigma Lutin, Narodni Podnik Impeller blades
US4218190A (en) * 1977-06-29 1980-08-19 Kawasaki Jukogyo Kabushiki Kaisha Flat-bladed fan wheel of diagonal-flow fan
US4566166A (en) * 1984-10-03 1986-01-28 Allis-Chalmers Corporation Method for manufacturing a stay ring bearing stationary guide vanes for a nongated turbine
US20050249594A1 (en) * 2004-05-05 2005-11-10 Chandraker A L Runner blade for low specific speed Francis turbine
CN102628450A (zh) * 2012-01-16 2012-08-08 兰州理工大学 一种无过载离心泵叶轮设计方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03164600A (ja) * 1989-11-22 1991-07-16 Atsugi Unisia Corp ポンプのインペラ構造
EP0775248B1 (de) * 1994-06-10 1999-09-15 Ebara Corporation Zentrifugal-oder halbaxialturbomaschinen
JP3599390B2 (ja) * 1994-11-04 2004-12-08 日本メクトロン株式会社 パーフルオロ不飽和ニトリル化合物およびその製造法
ITMI20012414A1 (it) * 2001-11-15 2003-05-15 Nuovo Pignone Spa Pala per girante di compressore centrifugo a medio-alto coefficiente di flusso
ITMI20012413A1 (it) * 2001-11-15 2003-05-15 Nuovo Pignone Spa Pala per girante di compressore centrifygo a medio coefficiente di flusso
CN110145489B (zh) * 2019-05-22 2020-11-24 佛山市南海南洋电机电器有限公司 一种风机叶片及风机叶轮

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US909863A (en) * 1905-06-03 1909-01-19 Augustus J Bowie Jr Centrifugal fan.
US963378A (en) * 1905-09-23 1910-07-05 Hans Lorenz Turbine or centrifugal pump.
US1509653A (en) * 1921-09-01 1924-09-23 Kaplan Victor Runner wheel for turbines, etc.
US1906180A (en) * 1928-10-05 1933-04-25 Rees Edmund Scott Gustave Propeller, pump, or fan
US2767906A (en) * 1952-11-07 1956-10-23 Doyle Vacuum Cleaner Co Centrifugal fan wheel
US3226085A (en) * 1962-10-01 1965-12-28 Bachl Herbert Rotary turbine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US909863A (en) * 1905-06-03 1909-01-19 Augustus J Bowie Jr Centrifugal fan.
US963378A (en) * 1905-09-23 1910-07-05 Hans Lorenz Turbine or centrifugal pump.
US1509653A (en) * 1921-09-01 1924-09-23 Kaplan Victor Runner wheel for turbines, etc.
US1906180A (en) * 1928-10-05 1933-04-25 Rees Edmund Scott Gustave Propeller, pump, or fan
US2767906A (en) * 1952-11-07 1956-10-23 Doyle Vacuum Cleaner Co Centrifugal fan wheel
US3226085A (en) * 1962-10-01 1965-12-28 Bachl Herbert Rotary turbine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964841A (en) * 1974-09-18 1976-06-22 Sigma Lutin, Narodni Podnik Impeller blades
US4218190A (en) * 1977-06-29 1980-08-19 Kawasaki Jukogyo Kabushiki Kaisha Flat-bladed fan wheel of diagonal-flow fan
US4566166A (en) * 1984-10-03 1986-01-28 Allis-Chalmers Corporation Method for manufacturing a stay ring bearing stationary guide vanes for a nongated turbine
US20050249594A1 (en) * 2004-05-05 2005-11-10 Chandraker A L Runner blade for low specific speed Francis turbine
US7210904B2 (en) * 2004-05-05 2007-05-01 Bharat Heavy Electricals Ltd. Runner blade for low specific speed Francis turbine
CN102628450A (zh) * 2012-01-16 2012-08-08 兰州理工大学 一种无过载离心泵叶轮设计方法
CN102628450B (zh) * 2012-01-16 2014-07-23 兰州理工大学 一种无过载离心泵叶轮设计方法

Also Published As

Publication number Publication date
CH519109A (fr) 1972-02-15
DE1528730A1 (de) 1969-12-04
GB1144445A (en) 1969-03-05
DE1528730B2 (de) 1975-06-26

Similar Documents

Publication Publication Date Title
US3440969A (en) Impeller having a centrifugal fluid handling means having steadily curving vanes
US3951567A (en) Side channel compressor
US2378372A (en) Turbine and compressor
US2165808A (en) Pump rotor
US3973872A (en) Centrifugal compressor
US2101051A (en) Rotary fluid displacement device
US20100158672A1 (en) Spiral pumping stage and vacuum pump incorporating such pumping stage
US3289919A (en) Centrifugal gas compressors
US2224519A (en) Screw type fluid propelling apparatus
CN104781562A (zh) 离心旋转机械
US1912452A (en) Balanced multistage centrifugal pump
US2678537A (en) Axial flow turbine type hydraulic torque converter
US2490066A (en) Diffuser
GB1460919A (en) Pumps
US1978277A (en) Multistage pump balancing means
US3907456A (en) Centrifugal pump
US1629141A (en) Hydraulic pump
US1496633A (en) Pump
US4295804A (en) Intermediately cooled air vacuum pump with balancing of the pressures
US978397A (en) Fan.
US2323382A (en) Rotary blower
US2084111A (en) Axial flow fan or pump
US1463110A (en) Rotary fluid-pressure producing apparatus
GB1244577A (en) Apparatus for separating the gas and liquid fractions of a foam
US1199374A (en) Conical-flow fan.