US3639089A - Pump - Google Patents

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Publication number
US3639089A
US3639089A US22964A US3639089DA US3639089A US 3639089 A US3639089 A US 3639089A US 22964 A US22964 A US 22964A US 3639089D A US3639089D A US 3639089DA US 3639089 A US3639089 A US 3639089A
Authority
US
United States
Prior art keywords
outlet
rotor
liquid
pump
inlet
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
US22964A
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English (en)
Inventor
Thomas Lock
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.)
Borg Warner Corp
Original Assignee
Borg Warner Corp
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 Borg Warner Corp filed Critical Borg Warner Corp
Application granted granted Critical
Publication of US3639089A publication Critical patent/US3639089A/en
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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/02—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0088—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3446—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface

Definitions

  • a dual function pump is ineluded in a pumping assembly, a primary portion or section of which pumps contaminated liquid from its inlet to its outlet and across a self-cleaning wash flow filter to a location of use.
  • a secondary portion or section of the dual function pump has its inlet connected to withdraw clean liquid which has passed through the filter and pumps this liquid to the various areas of the assembly for lubrication and purge of the running clearances and rubbing surfaces thereof. The flow of clean liquid is then into the flow path of the primary portion of the dual-function pump.
  • a lobe pump having a plurality of blades, which move by centrifugal force, by pump hydraulic pressure and a cam ring, in suitably disposed radial or substantially radial grooves in a rotor performs as a dual function pump.
  • additional ports are located in the bearing sidewalls of the pump to utilize the lower portion of the blades and the rotor slots as the secondary portion or section of the pump.
  • each blade may consist of an assembly of vanes having beveled edges.
  • the pump may be of a double lobe construction.
  • FIG. 1 is a sectional view of the pump assembly constructed according to this invention, indicating by appropriate arrows the flow of lubrication and purging liquid;
  • FIG. 2 is a sectional view taken illustrating the lobe pump and porting arrangement of FIG. 1.
  • FIG. 1 a pump assembly, FIG. 1, which includes a housing 12 having an inlet 14 and an outlet 16 connected respectfully to a source of liquid and a location of use of such liquid, both of which are not shown.
  • a centrifugal pump 18 and a lobe pump 20 both being commonly driven on a shaft 22 driven by a prime mover, not shown.
  • the lobe pump 20 has a primary section constituted by the crescent-shaped cavities 24, 26 in which blades 28 pump liquid from inlet ports 30, 32 to outlet ports 34, 36 and a secondary section in which the pump chambers are formed by the blades 28 moving in radial or substantial radial grooves 38 of the rotor 40 and which pumps liquid from inlet ports 42, 44 to outlet ports 46, 48.
  • the blades 28 move outwardly by centrifugal force and hydraulic pressure such that the outer tips engage the walls of the cavities 24, 26.
  • the outlet of the centrifugal pump 18 communicates with the primary inlet ports 30, 32 of the lobe pump 20.
  • the primary outlet ports 34, 36 of the lobe pump 20 communicate with the outlet 16.
  • a self cleaning wash-flow filter 50 Between the primary outlet ports 34, 36 of the lobe pump 20 and the outlet 16 is a self cleaning wash-flow filter 50 through which a minor portion of the liquid flowing therethrough passes to the inlet ports 42, 44 of the secondary section of the lobe pump 20 by way of passages 52. The major portion of the fluid flows to the outlet 16.
  • the secondary section of the lobe pump forces the relatively clean liquid from the wash flow filter along the grooves 38 formed by blades 28 and over the edges of the blades, over the ends of the rotor 40 along the bearing faces 56 of the pump port plates 58 which cooperate with the rotor 40 and cam ring 60 to form the cavities 24, 26 through bearing clearances 62, through spline clearances 64, and passages 66 to the low-pres sure area of pump inlet 14.
  • the wash-flow filter 50 is self-cleaning because the main flow of liquid therethrough carries with it the solids deposited thereon.
  • a single lobe pump utilizing an arrangement of primary and secondary pump sections can be used in lieu of the double lobe pump just described, the primary and secondary sections being similarly formed.
  • a pump comprising:
  • a rotor in a housing having a primary inlet and a primary outlet and crescent-shaped pumping cavities
  • said rotor being journaled for rotation in bearings and having slots therein;
  • a secondary pumping section defined at least in part by said slots and the inner portion of said blades
  • a dual function lobe pump having a primary pumping section and a secondary pumping section, said pump comprismg:
  • a housing having an inlet connected to a source of a liquid
  • a rotor having journals arranged for rotation in said cavity with its periphery defining therewith at least one crescent-shaped pumping chamber;
  • inlet and outlet ports communicating respectively with said inlet and outlet and said pumping chamber
  • a secondary pumping chamber defined by the inner end of a blade and a slot
  • a pump as recited in claim 2 further comprising means communicating said secondary outlet with said journals for the passage of liquid for lubrication thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
US22964A 1970-03-26 1970-03-26 Pump Expired - Lifetime US3639089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2296470A 1970-03-26 1970-03-26

Publications (1)

Publication Number Publication Date
US3639089A true US3639089A (en) 1972-02-01

Family

ID=21812348

Family Applications (1)

Application Number Title Priority Date Filing Date
US22964A Expired - Lifetime US3639089A (en) 1970-03-26 1970-03-26 Pump

Country Status (6)

Country Link
US (1) US3639089A (enExample)
JP (1) JPS5235882B1 (enExample)
CA (1) CA931821A (enExample)
DE (1) DE2114202C3 (enExample)
FR (1) FR2087848A5 (enExample)
GB (1) GB1315103A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066552A (en) * 1974-09-13 1978-01-03 Sundstrand Corporation Combined pump and self-cleaning centrifugal contamination separator
US4836021A (en) * 1987-03-19 1989-06-06 Universal Flow Monitors Inc. Fluid flow meter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953153A (en) * 1974-05-17 1976-04-27 Sundstrand Corporation Multiple displacement pump system and method
US4578948A (en) * 1984-11-01 1986-04-01 Sundstrand Corporation Reversible flow vane pump with improved porting
US6579070B1 (en) 1998-12-24 2003-06-17 Bosch Rexroth Ag Pump assembly comprising two hydraulic pumps
DE102008049217A1 (de) 2008-09-27 2010-04-08 Hydac Filtertechnik Gmbh Vorrichtung zum Abzweigen eines fluidischen Teilstroms

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827226A (en) * 1954-06-17 1958-03-18 Thompson Prod Inc Refrigeration apparatus
US3223044A (en) * 1963-07-18 1965-12-14 American Brake Shoe Co Three-area vane type fluid pressure energy translating devices
US3250460A (en) * 1964-06-04 1966-05-10 Borg Warner Compressor with liquid refrigerant injection means

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275774A (en) * 1939-01-11 1942-03-10 Jr Frederick Kraissl Compression or vacuum machine
US2588342A (en) * 1943-01-02 1952-03-11 Walter P Innes Jr Fluid engine
FR1005230A (fr) * 1947-06-20 1952-04-08 Appareil perfectionné à palettes rotatives et ses applications en particulier comme compresseur ou moteur et/ou/pompe
GB1182608A (en) * 1966-06-07 1970-02-25 Plessey Co Ltd Improvements in or relating to Rotary Pumps for Liquids Containing Solid Contaminants

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827226A (en) * 1954-06-17 1958-03-18 Thompson Prod Inc Refrigeration apparatus
US3223044A (en) * 1963-07-18 1965-12-14 American Brake Shoe Co Three-area vane type fluid pressure energy translating devices
US3250460A (en) * 1964-06-04 1966-05-10 Borg Warner Compressor with liquid refrigerant injection means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066552A (en) * 1974-09-13 1978-01-03 Sundstrand Corporation Combined pump and self-cleaning centrifugal contamination separator
US4836021A (en) * 1987-03-19 1989-06-06 Universal Flow Monitors Inc. Fluid flow meter

Also Published As

Publication number Publication date
FR2087848A5 (enExample) 1971-12-31
CA931821A (en) 1973-08-14
GB1315103A (en) 1973-04-26
JPS5235882B1 (enExample) 1977-09-12
DE2114202A1 (de) 1971-10-14
DE2114202C3 (de) 1981-06-11
DE2114202B2 (de) 1980-10-16

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