US3526465A - Impeller for a submerged centrifugal fuel pump - Google Patents

Impeller for a submerged centrifugal fuel pump Download PDF

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Publication number
US3526465A
US3526465A US758848A US3526465DA US3526465A US 3526465 A US3526465 A US 3526465A US 758848 A US758848 A US 758848A US 3526465D A US3526465D A US 3526465DA US 3526465 A US3526465 A US 3526465A
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US
United States
Prior art keywords
impeller
vanes
plate
fuel
vapor
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
US758848A
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English (en)
Inventor
Donald R Compton
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.)
Carter Automotive Co Inc
Original Assignee
ACF Industries Inc
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 ACF Industries Inc filed Critical ACF Industries Inc
Application granted granted Critical
Publication of US3526465A publication Critical patent/US3526465A/en
Assigned to CARTER AUTOMOTIVE CORPORATION, INC., 9666 OLIVE BOULEVARD, ST. LOUIS, MISSOURI 63132, A CORP. OF DE. reassignment CARTER AUTOMOTIVE CORPORATION, INC., 9666 OLIVE BOULEVARD, ST. LOUIS, MISSOURI 63132, A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ACF INDUSTRIES, INCORPORATED
Assigned to CARTER AUTOMOTIVE COMPANY, INC. reassignment CARTER AUTOMOTIVE COMPANY, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ACF INDUSTRIES, INCORPORATED
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
    • 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
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock
    • F04D9/002—Preventing vapour lock by means in the very pump

Definitions

  • a centrifugal fuel pump impeller mounted on the shaft of an electric motor includes a circular plate having on its intake side a series of ridges running from inner points of the plate to its periphery to form pumping vanes. The trailing sides only of the ridges have fillets along their entire length to prevent vapor lock. On the other side of the plate there is an annular ridge and short vanes between it and the periphery of the plate for preventing pumped fuel from flowing inwardly over the top of the impeller.
  • the chamber in which the impeller is located has a clearance space for the air and vapor in the fuel to escape over the top of the impeller.
  • the invention relates particularly to a fuel pump adapted to be submerged in the gasoline tank of an automobile.
  • a serious fault of prior centrifugal pumps of this type is the occurrence of vapor lock. Vaporization in the tank takes place since the temperature of the fuel may rise as much as 20 above ambient under summertime driving conditions. A major source of heat is the air blown back by the radiator fan, and the mufiler and the tail pipe may be located so that they radiate heat to the fuel tank. Since gasoline is made up of a number of hydrocarbons, some of which boil at temperatures below 100 F., vaporization occurs readily.
  • a fuel pump adapted to be mounted in the gasoline tank of an automobile has a centrifugal impeller mounted on a shaft of an electric motor.
  • the impeller is located in an intake and pumping chamber which provides clearance space round the impeller in which vapor may pass round and over the impeller and escape.
  • the impeller has a plate provided with vanes on the bottom thereof.
  • the vanes are in the form of arcuate ridges extending radially outward.
  • the trailing sides of the vanes have fillets sloping from the tops of the vanes or ridges down to the plate. The fillets prevent the formation of vapor bubbles behind the vanes, probably because they prevent or reduce cavitation behind the vanes.
  • the impeller plate On the top side, the impeller plate has an annular ridge rather close to the periphery and short vanes extending from the annular 3,526,465 Patented Sept. 1, 1970 ridge to the periphery, for the purpose of obstructing or preventing the flow of liquid fuel over the top of the impeller.
  • the vanes on the top side of the impeller do not have fillets and, therefore, these vanes may produce regions of reduced pressure on the top side of the impeller, in which region vapor may collect, and then escape through an opening above the impeller.
  • FIG. 1 is a top plan view of the impeller.
  • FIG. 2 is a bottom plan view of the impeller.
  • FIG. 3 is a partial sectional view taken along line 3-3 of FIG. 2.
  • FIG. 4 is a sectional view of the lower portion of the pump.
  • the invention relates to an improved impeller particularly for the electric motor driven centrifugal fuel pump disclosed in copending application of Charles W. Jeep, Jr. and Rooney W. Davis for Centrifugal Pump for a Fuel Tank, Ser. No. 756,643 filed Aug. 30, 1968, now Pat. 3,507,582 designed to be mounted on the bottom of a fuel tank of an automobile.
  • the structure of the entire pump is shown and described in the aforementioned application, the disclosure of which is incorporated herein by reference.
  • the pump has a plastic casing 10, only the lower portion of which is shown in FIG. 4, with an inlet 12.
  • a shaft 14 of an electric motor (not shown) extends through a partitioning member 16 into a pumping chamber 18.
  • Impeller 20 is mounted on the end of shaft 14. Fuel enters chamber 18 through perforated metallic plate 22 supported on lugs 24 of inlet 12. Chamber 18 has an outer wall 19 having a liquid fuel outlet (not shown) communicating with fuel delivery passage 26. Chamber 18 provides a sufiicient clearance space around impeller 20 to permit air and vapor in the fuel to pass round the impeller, through opening 28 in partition 30 and thence into passage 32, which returns the vapor to the fuel tank.
  • Impeller 20 has a hub 34 fastened to motor shaft 14.
  • Plate 36 extends outwardly from hub 34.
  • a series of arcuate vanes 38 extends outwardly fromthe hub to the periphery of plate 36 on the bottom thereof.
  • the forward edge 40 of each vane is perpendicular to plate 36, while the trailing side 42 is provided with a fillet which is included to plate 36.
  • On the upper side of plate 36 is an annular ridge 44 and a series of short vanes 46 extending from annular ridge 44 to the periphery of plate 36.
  • vanes 38 on the bottom side of impeller 20 impart a centrifugal motion to the liquid fuel in chamber 18 supplied through inlet 12 and perforated plate 22.
  • the fuel which is circulated and urged against the wall 19 of chamber 18, passes through an opening in wall 19 communicating with passage 26.
  • the fuel is prevented from passing over the top of impeller 20 by short vanes 46, as well as ridge 44.
  • Vapor, however, in chamber 18 will rise and move through the clearance space between impeller 20 and wall 19 to the top side of the impeller, and eventually will rise through opening 28 and passage 32, and thus return to the fuel tank. Movement of liquid fuel over the top side of the impeller is obstructed by ridge 44.
  • a centrifugal liquid fuel pump for an internal combustion engine having an impeller, a vertical rotary motor shaft, and a housing having a chamber having a fuel inlet in the bottom thereof and a gas outlet in the top thereof, said impeller having a hub fixed to said shaft, a generally fiat plate of substantially uniform thickness having a circular perimeter extending outwardly from said hub, a plurality of vanes on the bottom side of the plate in the form of arcuate ridges extending from the hub to the periphery of said plate, the trailing sides only of the vanes having fillets forming inclined surfaces extending from the tops of the vanes to the plate for reducing cavitation behind the vanes and thereby preventing vapor lock, and a closed annular ridge on the top side of said plate outwardly of said gas outlet for impeding inward radial flow of liquid fuel on said top side of said plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US758848A 1968-09-10 1968-09-10 Impeller for a submerged centrifugal fuel pump Expired - Lifetime US3526465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75884868A 1968-09-10 1968-09-10

Publications (1)

Publication Number Publication Date
US3526465A true US3526465A (en) 1970-09-01

Family

ID=25053349

Family Applications (1)

Application Number Title Priority Date Filing Date
US758848A Expired - Lifetime US3526465A (en) 1968-09-10 1968-09-10 Impeller for a submerged centrifugal fuel pump

Country Status (5)

Country Link
US (1) US3526465A (de)
JP (1) JPS4947202Y1 (de)
DE (1) DE1945245C3 (de)
FR (1) FR2017716A1 (de)
GB (1) GB1291249A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012112382A1 (en) * 2011-02-15 2012-08-23 Liberty Pumps, Inc. Macerating apparatus and method
US8714917B2 (en) 2011-02-15 2014-05-06 Liberty Pumps Inc. Anti-airlock pump
US20170321701A1 (en) * 2013-01-11 2017-11-09 Liberty Pumps, Inc. Liquid pump
US20230258198A1 (en) * 2021-09-24 2023-08-17 Collins Engine Nozzles, Inc. Perforated impeller blades

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735917C2 (de) * 1977-08-10 1986-04-03 Robert Bosch Gmbh, 7000 Stuttgart Anordnung zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
ES244882Y (es) * 1979-07-30 1984-02-16 Transpar Iberica Sa Bomba electrica para lavaparabrisas

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US890662A (en) * 1907-03-19 1908-06-16 Carl Lager Multistage centrifugal pump.
US1003020A (en) * 1907-11-14 1911-09-12 Samuel J Webb Rotary pump.
US2127865A (en) * 1934-08-31 1938-08-23 Robert H Goddard Seal for centrifugal pumps
US2791183A (en) * 1952-02-09 1957-05-07 Skoglund & Olsson Ab Impeller for centrifugal pumps
US2822145A (en) * 1954-04-29 1958-02-04 William B Mclean Turbine rotor
US3040670A (en) * 1959-10-16 1962-06-26 Duriron Co Pumps
US3295456A (en) * 1965-04-12 1967-01-03 Cornell Mfg Co Pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US890662A (en) * 1907-03-19 1908-06-16 Carl Lager Multistage centrifugal pump.
US1003020A (en) * 1907-11-14 1911-09-12 Samuel J Webb Rotary pump.
US2127865A (en) * 1934-08-31 1938-08-23 Robert H Goddard Seal for centrifugal pumps
US2791183A (en) * 1952-02-09 1957-05-07 Skoglund & Olsson Ab Impeller for centrifugal pumps
US2822145A (en) * 1954-04-29 1958-02-04 William B Mclean Turbine rotor
US3040670A (en) * 1959-10-16 1962-06-26 Duriron Co Pumps
US3295456A (en) * 1965-04-12 1967-01-03 Cornell Mfg Co Pump

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012112382A1 (en) * 2011-02-15 2012-08-23 Liberty Pumps, Inc. Macerating apparatus and method
US8714917B2 (en) 2011-02-15 2014-05-06 Liberty Pumps Inc. Anti-airlock pump
US20170321701A1 (en) * 2013-01-11 2017-11-09 Liberty Pumps, Inc. Liquid pump
US10267312B2 (en) * 2013-01-11 2019-04-23 Liberty Pumps, Inc. Liquid pump
US20230258198A1 (en) * 2021-09-24 2023-08-17 Collins Engine Nozzles, Inc. Perforated impeller blades
US11913468B2 (en) * 2021-09-24 2024-02-27 Collins Engine Nozzles, Inc. Perforated impeller blades

Also Published As

Publication number Publication date
GB1291249A (en) 1972-10-04
DE1945245B2 (de) 1973-05-17
DE1945245C3 (de) 1973-12-13
JPS4947202Y1 (de) 1974-12-25
FR2017716A1 (de) 1970-05-22
DE1945245A1 (de) 1970-04-09

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CARTER AUTOMOTIVE CORPORATION, INC., 9666 OLIVE BO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ACF INDUSTRIES, INCORPORATED;REEL/FRAME:004491/0867

Effective date: 19851212

AS Assignment

Owner name: CARTER AUTOMOTIVE COMPANY, INC., MISSOURI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ACF INDUSTRIES, INCORPORATED;REEL/FRAME:004715/0162

Effective date: 19870410

Owner name: CARTER AUTOMOTIVE COMPANY, INC., 9666 OLIVE BOULEV

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ACF INDUSTRIES, INCORPORATED;REEL/FRAME:004715/0162

Effective date: 19870410