GB1417549A - Centrifugal pumps for pumping liquids - Google Patents

Centrifugal pumps for pumping liquids

Info

Publication number
GB1417549A
GB1417549A GB4707472A GB4707472A GB1417549A GB 1417549 A GB1417549 A GB 1417549A GB 4707472 A GB4707472 A GB 4707472A GB 4707472 A GB4707472 A GB 4707472A GB 1417549 A GB1417549 A GB 1417549A
Authority
GB
United Kingdom
Prior art keywords
fingers
row
shroud
hub
convergent
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
Application number
GB4707472A
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB4707472A priority Critical patent/GB1417549A/en
Priority to US00319649A priority patent/US3847503A/en
Priority to IT47585/73A priority patent/IT976798B/en
Priority to DE2300998A priority patent/DE2300998C3/en
Priority to FR7300870A priority patent/FR2167948A5/fr
Priority to JP48006522A priority patent/JPS525361B2/ja
Publication of GB1417549A publication Critical patent/GB1417549A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Frames (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

1417549 Centrifugal pumps LUCAS INDUSTRIES Ltd 22 Dec 1972 [12 Jan 1972 12 Oct 1972] 1403/72 and 47074/72 Heading F 1C A centrifugal pump comprises an impeller having a shroud 15 defining with a hub 14 a passage 16 the internal and external diameters of which increase in the direction towards the outlet end, vanes 17 inter-connecting the hub and shroud at the outlet end, and a plurality of annular rows of fingers 18-21 mounted on the shroud and/or the hub so as to project across the passage. The fingers, which may be of circular section wire, may be of increasing inclination to the impeller axis and decreasing length in successive rows towards the outlet. The fingers induce a swirl upstream of the vanes 17 and are stated to reduce vapour generation. The fingers may be hollow, liquid under pressure from the discharge side of the pump being supplied to the interior of each finger and discharged through one or more nozzles diverted at an angle to the plane of rotation, the angle being greater in the second row of fingers than in the first row. The fingers may be solid but each formed with a convergent on convergent-divergent diametrical slot, the inclination of the slot to the place of rotation being greater in the second row of fingers than in the first row.
GB4707472A 1972-01-12 1972-10-12 Centrifugal pumps for pumping liquids Expired GB1417549A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB4707472A GB1417549A (en) 1972-01-12 1972-10-12 Centrifugal pumps for pumping liquids
US00319649A US3847503A (en) 1972-01-12 1972-12-29 Centrifugal pumps for pumping liquids
IT47585/73A IT976798B (en) 1972-01-12 1973-01-10 CENTRIFUGAL PUMP FOR LIQUIDS
DE2300998A DE2300998C3 (en) 1972-01-12 1973-01-10 Centrifugal pump
FR7300870A FR2167948A5 (en) 1972-01-12 1973-01-11
JP48006522A JPS525361B2 (en) 1972-01-12 1973-01-12

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB140372 1972-01-12
GB4707472A GB1417549A (en) 1972-01-12 1972-10-12 Centrifugal pumps for pumping liquids

Publications (1)

Publication Number Publication Date
GB1417549A true GB1417549A (en) 1975-12-10

Family

ID=26236717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4707472A Expired GB1417549A (en) 1972-01-12 1972-10-12 Centrifugal pumps for pumping liquids

Country Status (6)

Country Link
US (1) US3847503A (en)
JP (1) JPS525361B2 (en)
DE (1) DE2300998C3 (en)
FR (1) FR2167948A5 (en)
GB (1) GB1417549A (en)
IT (1) IT976798B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8507010D0 (en) * 1985-03-19 1985-04-24 Framo Dev Ltd Compressor unit
JP4959424B2 (en) * 2007-05-31 2012-06-20 勇 青谷 Pump device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA577325A (en) * 1959-06-09 M. Borden David Centrifugal compressor for a gas turbine engine
DE238089C (en) *
US795938A (en) * 1903-08-17 1905-08-01 James M Seymour Jr Blower or fan.
US1073413A (en) * 1910-09-30 1913-09-16 Hermann Faehrmann Propeller.
US1622930A (en) * 1921-10-08 1927-03-29 Karman Theodor Von Turbo machine
US2576700A (en) * 1947-06-02 1951-11-27 Schneider Brothers Company Blading for fluid flow devices
US2650752A (en) * 1949-08-27 1953-09-01 United Aircraft Corp Boundary layer control in blowers
GB1195993A (en) * 1967-08-11 1970-06-24 Rolls Royce Centrifugal Pumps.
US3588280A (en) * 1969-08-19 1971-06-28 Shmariahu Yedidiah Inducers for centrifugal pumps

Also Published As

Publication number Publication date
DE2300998B2 (en) 1977-12-29
FR2167948A5 (en) 1973-08-24
DE2300998C3 (en) 1978-08-17
JPS525361B2 (en) 1977-02-12
US3847503A (en) 1974-11-12
DE2300998A1 (en) 1973-07-19
JPS4882406A (en) 1973-11-05
IT976798B (en) 1974-09-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee