WO1991013256A1 - Combined electric motor and pump unit - Google Patents

Combined electric motor and pump unit Download PDF

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Publication number
WO1991013256A1
WO1991013256A1 PCT/GB1991/000288 GB9100288W WO9113256A1 WO 1991013256 A1 WO1991013256 A1 WO 1991013256A1 GB 9100288 W GB9100288 W GB 9100288W WO 9113256 A1 WO9113256 A1 WO 9113256A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
stator
unit
pump
electric motor
Prior art date
Application number
PCT/GB1991/000288
Other languages
French (fr)
Inventor
James William Cahill
Original Assignee
James William Cahill
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 James William Cahill filed Critical James William Cahill
Publication of WO1991013256A1 publication Critical patent/WO1991013256A1/en

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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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid

Definitions

  • This invention relates to combined electric motor and pump units.
  • a combined electric motor and pump unit having a casing provided with inlet and outlet ports for liquids to be pumped, and wherein the motor comprises a stator and a rotor and the pump comprises a fluid reaction member which forms part of the rotor and is located in a principal transmission path for pumped liquids, the rotor and stator of the motor being separated radially by a clearance which forms a secondary transmission path for pumped liquids, and the electrical windings of the motor being insulated with materials which are inert to the pumped liquids.
  • the insulating materials for the windings may be PVC or PTFE or polyurethane or suitable resin encapsulations.
  • the motor does not have an impermeable sleeve between its stator and rotor so that the gap between the rotor and the stator can be minimised and the electromagnetic efficiency of the motor is therefore greatly increased thereby rendering the combined unit more compact than hitherto for the same pumping duty.
  • the mechanical construction of the unit is simpler than hitherto and the rotor is hydrodynamically lubricated. Because the rotor is hydrodyna ically lubricated and there is no impermeable sleeve between the stator and rotor substantially less heat is generated in the motor so that the operational life of the motor is greater than hitherto.
  • the pump may be arranged for axial flow, centrifugal flow or mixed flow or it may be a gear pump and it may incorporate a plurality of fluid reaction members.
  • the electric motor may be of the squirrel cage type or salient pole type (for example a variable reluctance motor) .
  • the rotor may comprise a plurality of rotor units mounted coaxially. Alternate rotor units may be formed with their fluid reaction members of opposite hand. The rotor units may be arranged to rotate in opposite directions by the arrangement of the stator windings in a polyphase motor or by appropriate arrangement of the starter coils for each rotor unit in a single phase motor.
  • a single stator is common to all rotor units, the rotors having stator vanes positioned between them.
  • each rotor unit may operate with a separate stator unit, enabling the production of different rotational speeds and/or power to the different rotor units.
  • the rotor extends beyond the stator, the rotor being formed with radially extending passages, enabling the unit to operate as a centrifugal pump.
  • the stator may comprise two units with a fluid inlet at each end of the casing, the outlet being positioned centrally between the pair o stators. Such an arrangement would balance hydraulic a magnetic thrusts independently.
  • stator units are connected to individual supplies of alternating current at variable frequencies and/or different voltages.
  • the windings of the individual stator units may be arranged to provide different numbers of poles.
  • Different rotor units may have different lengths and/or diameters and several rotors and stators may be arranged one within the other.
  • the rotors may be formed with several sets of helical passages, each set being concentric with the axis of the rotor but being at different radial distances from the axis. Also, different sets of passages may be connectible to different fluids to be pumped. Alternatively in a reflex arrangement, fluid leaving one set of helical passages may be directed to another set of helical passages in the same rotor.
  • the various passage in the rotor may be of circular or non-circular cross section and may be of non-constant area depending on the use to which the pu pis to be put.
  • a rotor external to the stator and rotatable about th stator may be formed with radially projecting vanes the rotor and the stator being enclosed in an eccentric position within a circular casing having entry and discharge ports whereby the unit may be capable of functioning as a liquid ring pump.
  • Such a pump may be formed as a self-contained roller unit by forming the rotor external to the stator with an external roller surface thus eliminating external gears and couplings.
  • the gap between stator and rotor lies on the surface of a cone the axis of which is the rotational axis of the rotor so that the cross-sectional outline of the rotor follows the shape of the main transmission passageway for liquids extending through the rotor and having small and large diameter impellers at respective ends.
  • the pump When the pump is of the swash plate type having a plurality of piston and cylinder units mounted with a radial offset from the axis of a support body, the piston being interconnected with a swash plate which is inclinde at an angle to that axis, either the swash plate or the support body may function ⁇ _ the rotor of the electric motor, although the latter is preferred to permit variabl inclination of the swash plate.
  • Liquids to be pumped ar of course transmitted to and from the cylinders by a conventional swash-plate-pump manifold..
  • Fig. 1 shows a combined electric motor and gear pump in accordance with the present invention
  • Fig. 2 shows a combined electric motor and mixed flow pump in accordance with the present invention
  • Fig. 3 shows a combined electric motor and axial flow pump in accordance with the present invention.
  • Fig. 4 shows another form of combined electric motor and mixed flow pump in accordance with the present invention.
  • the drawings show combined electric motor and pump units comprising a casing 4 having a pump inlet 5, 12, 18 and 29 and a pump outlet 6, 13, 19 and 30 connected by a principal transmission path for pumped liquids, a fluid reaction member 3, 10, 16 and 23 positioned in the principal transmission path, and an electrical stator and rotor arrangement, the rotor 2, 9, 15 and 21 being united with the reaction member 3, 10, 16 and 23.
  • the electrical windings of the stator 2,9,15,21 are insulated with materials which are inert to the pumped liquids, PTFE wrappings being preferred, and a secondary liquid transmission path is provided through the motor via the clearance between the rotor and stator. An impermeable sleeve is not provided between the rotor and stator.
  • the rotor is hydrodynamically lubricated by the pumped liquids in the transmission paths.
  • Fig. 1 shows a combined unit in the form of a gear pump comprising two stators 1 each having electrical windings 8 and a rotor 2 in the form of a ring which is rotatable around the exterior of the stator 1.
  • Each rotor has conductor bars 7 and also is formed with externally projecting gear teeth 3.
  • the two rotors 2 mesh with one another and are disposed without bearings within a.close fitting casing 4 having entry and discharge passages 5 and 6 for pumped liquids. Because there are two motors a greater pump output is achieved than would be the case if one of the rotors 2 did not form part of an electric motor.
  • Fig. 2 shows a mixed flow pump comprising an annular stator 1 with windings 8 which rotatably receives a rotor 9 with conductor bars 7.
  • the rotor is formed with an axial passageway and is supported for rotation on axially separated bearings 11 by hub units having generally radially-extending arms which are hydrodynamically profiled to form axially separated sets of impeller blade 10.
  • the casing 4 comprises an inlet 12, and an outlet 1 which forms part of a volute.
  • Fig. 3 shows a linear pump comprising a casing 4 within which there is located an annular stator 14 with windings 8 which receives a rotor 15 with conductor bars 7.
  • the rotor 15 has an axial passageway in which is formed a central impeller 16 which at its periphery is united with the rotor and which is mounted on axially-separated journals 17 carried by axially-separate hub units forming part of the casing 4.
  • the casing 4 has an inlet port 18 for delivery of liquid to be pumped to the principal transmission path axially through the rotor 15, and an outlet port 19 in which is located a set of static vanes to provide for flo straightening of the pumped liquids.
  • Pumped liquids in the principal transmission path provide hydrodynamic lubrication of the journal bearings.
  • the secondary transmission path is formed by the spaces between the rotor 15 and the casing 4 and the stator 14.
  • Fig. 4 shows a second embodiment of the mixed flow pump having a stator 20.
  • a tube 22 mounted at each end on bushes 25 externally carries a magnetically active annulus so as to form a rotor 21 and internally carries impeller blading 23 which projects from a hub 23A.
  • a static flow straightening bladed diffuser 24 having its blades projecting from a hub 24A is mounted on an end flange 26 of the casing at the output port 30 and project into the tube 22.
  • Bushes 25 are hydrodynamically lubricated by liquids traversing the secondary transmission path between the stator 20 and the rotor 21.
  • the impeller 3, 10, 16 and 23 can be designed such that a flow of fluid through the unit induces rotation of the impeller 3, 10, 16 and 23 which in turn causes rotation of the rotor 2, 9, 15 and 21. With a suitable electrical design, the unit may then be made to act as an electrical generator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Rotary Pumps (AREA)

Abstract

A combined electric motor and pump unit has a single casing (4) having an electric motor with stator (1) and rotor (2) and a pump with fluid reaction member (3) united with so as to form part of the rotor (2). The member (3) is located in a principal transmission path for liquids to be pumped and a secondary transmission path for such liquids is provided by the clearance between the stator (1) and the rotor (2). The electrical windings (8) of the motor are insulated with materials which are inert to the pumped liquids, PTFE wrappings being preferred.

Description

- 1 - COMBINED ELECTRIC MOTOR AND PUMP UNIT
This invention relates to combined electric motor and pump units.
In the development of combined electric motor and pum units separated electric motor units and pump units were initially provided and interconnected with a common drive shaft. To prevent loss of pumped liquids the pump unit required a gland seal for the drive shaft. Subsequently in order to reduce axial length, the separate units were combined together in a single housing. Initially in these combined units the electric motor was axially connected to the pump by a common drive shaft but subsequently the pump was located axially within the moto thereby rendering the combination axially compact. However in these combined units the problem of interactio of the pumped liquid with the electric motor is dealt wit by the provision of specialised seals and mechanical barriers in the form of an impermeable sleeve between the stator and rotor of the electric motor leading to a complicated mechanical construction for the combined unit and a reduced electromagnetic efficiency for the electric motor. Typically the impermeable sleeve is made of stainless steel.
According to the present invention there is provided a combined electric motor and pump unit having a casing provided with inlet and outlet ports for liquids to be pumped, and wherein the motor comprises a stator and a rotor and the pump comprises a fluid reaction member which forms part of the rotor and is located in a principal transmission path for pumped liquids, the rotor and stator of the motor being separated radially by a clearance which forms a secondary transmission path for pumped liquids, and the electrical windings of the motor being insulated with materials which are inert to the pumped liquids. The insulating materials for the windings may be PVC or PTFE or polyurethane or suitable resin encapsulations.
By virtue of the present invention the motor does not have an impermeable sleeve between its stator and rotor so that the gap between the rotor and the stator can be minimised and the electromagnetic efficiency of the motor is therefore greatly increased thereby rendering the combined unit more compact than hitherto for the same pumping duty. Additionally, the mechanical construction of the unit is simpler than hitherto and the rotor is hydrodynamically lubricated. Because the rotor is hydrodyna ically lubricated and there is no impermeable sleeve between the stator and rotor substantially less heat is generated in the motor so that the operational life of the motor is greater than hitherto.
The pump may be arranged for axial flow, centrifugal flow or mixed flow or it may be a gear pump and it may incorporate a plurality of fluid reaction members. The electric motor may be of the squirrel cage type or salient pole type (for example a variable reluctance motor) .
The rotor may comprise a plurality of rotor units mounted coaxially. Alternate rotor units may be formed with their fluid reaction members of opposite hand. The rotor units may be arranged to rotate in opposite directions by the arrangement of the stator windings in a polyphase motor or by appropriate arrangement of the starter coils for each rotor unit in a single phase motor.
Preferably, a single stator is common to all rotor units, the rotors having stator vanes positioned between them. Alternatively, each rotor unit may operate with a separate stator unit, enabling the production of different rotational speeds and/or power to the different rotor units.
Preferably, the rotor extends beyond the stator, the rotor being formed with radially extending passages, enabling the unit to operate as a centrifugal pump. Fo example, in such a construction the stator may comprise two units with a fluid inlet at each end of the casing, the outlet being positioned centrally between the pair o stators. Such an arrangement would balance hydraulic a magnetic thrusts independently.
Preferably, the stator units are connected to individual supplies of alternating current at variable frequencies and/or different voltages.
Alternatively, the windings of the individual stator units may be arranged to provide different numbers of poles.
Different rotor units may have different lengths and/or diameters and several rotors and stators may be arranged one within the other.
The rotors may be formed with several sets of helical passages, each set being concentric with the axis of the rotor but being at different radial distances from the axis. Also, different sets of passages may be connectible to different fluids to be pumped. Alternatively in a reflex arrangement, fluid leaving one set of helical passages may be directed to another set of helical passages in the same rotor. The various passage in the rotor may be of circular or non-circular cross section and may be of non-constant area depending on the use to which the pu pis to be put.
A rotor external to the stator and rotatable about th stator may be formed with radially projecting vanes the rotor and the stator being enclosed in an eccentric position within a circular casing having entry and discharge ports whereby the unit may be capable of functioning as a liquid ring pump. Such a pump may be formed as a self-contained roller unit by forming the rotor external to the stator with an external roller surface thus eliminating external gears and couplings. When the motor is of the variable reluctance type and the pump is of the centrifugal type it is particularly advantageous for the gap between stator and rotor to lie on the surface of a cone the axis of which is the rotational axis of the rotor so that the cross-sectional outline of the rotor follows the shape of the main transmission passageway for liquids extending through the rotor and having small and large diameter impellers at respective ends.
When the pump is of the swash plate type having a plurality of piston and cylinder units mounted with a radial offset from the axis of a support body, the piston being interconnected with a swash plate which is inclinde at an angle to that axis, either the swash plate or the support body may function ε_ the rotor of the electric motor, although the latter is preferred to permit variabl inclination of the swash plate. Liquids to be pumped ar of course transmitted to and from the cylinders by a conventional swash-plate-pump manifold..
Embodiments of the present invention will now be described, by way of example, with reference to accompanying drawings in which:-
Fig. 1 shows a combined electric motor and gear pump in accordance with the present invention;
Fig. 2 shows a combined electric motor and mixed flow pump in accordance with the present invention;
Fig. 3 shows a combined electric motor and axial flow pump in accordance with the present invention; and
Fig. 4 shows another form of combined electric motor and mixed flow pump in accordance with the present invention.
The drawings show combined electric motor and pump units comprising a casing 4 having a pump inlet 5, 12, 18 and 29 and a pump outlet 6, 13, 19 and 30 connected by a principal transmission path for pumped liquids, a fluid reaction member 3, 10, 16 and 23 positioned in the principal transmission path, and an electrical stator and rotor arrangement, the rotor 2, 9, 15 and 21 being united with the reaction member 3, 10, 16 and 23. The electrical windings of the stator 2,9,15,21 are insulated with materials which are inert to the pumped liquids, PTFE wrappings being preferred, and a secondary liquid transmission path is provided through the motor via the clearance between the rotor and stator. An impermeable sleeve is not provided between the rotor and stator. The rotor is hydrodynamically lubricated by the pumped liquids in the transmission paths.
Fig. 1 shows a combined unit in the form of a gear pump comprising two stators 1 each having electrical windings 8 and a rotor 2 in the form of a ring which is rotatable around the exterior of the stator 1. Each rotor has conductor bars 7 and also is formed with externally projecting gear teeth 3. The two rotors 2 mesh with one another and are disposed without bearings within a.close fitting casing 4 having entry and discharge passages 5 and 6 for pumped liquids. Because there are two motors a greater pump output is achieved than would be the case if one of the rotors 2 did not form part of an electric motor.
When in use, liquid enters the input passage 5 and is carried by the gear teeth 3, around to the discharge passage 6 so that a principal transmission path is formed around the periphery of the casing 4. Additionally however, a secondary transmission path for pumped liquid is formed by the spaces between the ends of the rotors 2 and the casing 4 which are interconnected by the annular clearance between the rotors 2 and the pertaining stators 1 and liquid which permeates into the secondary transmission path provides hydrodynamic lubrication of the rotors 2. Fig. 2 shows a mixed flow pump comprising an annular stator 1 with windings 8 which rotatably receives a rotor 9 with conductor bars 7. The rotor is formed with an axial passageway and is supported for rotation on axially separated bearings 11 by hub units having generally radially-extending arms which are hydrodynamically profiled to form axially separated sets of impeller blade 10. The casing 4 comprises an inlet 12, and an outlet 1 which forms part of a volute. Thus the principal transmission path is axially through the rotor 9 which provides for hydrodynamic lubrication of the bearings 11 but the secondary transmission path is through the clearance between the stator and rotor and the end clearances between the rotor 9 and the casing.
Fig. 3 shows a linear pump comprising a casing 4 within which there is located an annular stator 14 with windings 8 which receives a rotor 15 with conductor bars 7. The rotor 15 has an axial passageway in which is formed a central impeller 16 which at its periphery is united with the rotor and which is mounted on axially-separated journals 17 carried by axially-separate hub units forming part of the casing 4.
The casing 4 has an inlet port 18 for delivery of liquid to be pumped to the principal transmission path axially through the rotor 15, and an outlet port 19 in which is located a set of static vanes to provide for flo straightening of the pumped liquids. Pumped liquids in the principal transmission path provide hydrodynamic lubrication of the journal bearings. The secondary transmission path is formed by the spaces between the rotor 15 and the casing 4 and the stator 14.
Fig. 4 shows a second embodiment of the mixed flow pump having a stator 20. A tube 22 mounted at each end on bushes 25 externally carries a magnetically active annulus so as to form a rotor 21 and internally carries impeller blading 23 which projects from a hub 23A. A static flow straightening bladed diffuser 24 having its blades projecting from a hub 24A is mounted on an end flange 26 of the casing at the output port 30 and project into the tube 22. Bushes 25 are hydrodynamically lubricated by liquids traversing the secondary transmission path between the stator 20 and the rotor 21.
In each of the embodiments of the pump the impeller 3, 10, 16 and 23 can be designed such that a flow of fluid through the unit induces rotation of the impeller 3, 10, 16 and 23 which in turn causes rotation of the rotor 2, 9, 15 and 21. With a suitable electrical design, the unit may then be made to act as an electrical generator.

Claims

1. A combined electric motor and pump unit having a casing (4) provided with inlet (5) and outlet (6) ports for liquids to be pumped, and wherin the motor comprises a stator (1) and a rotor (2) and the pump comprises a fluid-reaction member (3) which forms part of the rotor (2) and is located in a principal transmission path for pumped liquids, the rotor (2) and the stator (1) being separated radially by a clearance which forms a secondary transmission path for pumped liquids, and the electrical windings (8) of the motor being insulated with materials which are inert to the pumped liquids.
2. A unit as claimed in claim 1, wherein the electrical windings (8) of the motor are insulated with PTFE wrappings.
3. A unit as claimed in claim 1, wherein the rotor (2) is annular and is mounted on the exterior of the stator (1) and the fluid-reaction member (3) comprises radially-projecting gear teeth on the exterior of the rotor (2) and enmeshed with another gear wheel so as to constitute a gear pump.
4. A unit as claimed in claim 3, wherein the said other gear wheel is also the rotor of another electric motor.
5. A unit as claimed in claim 1, wherein the stator (l) is annular and the rotor (9) is mounted for rotation within the stator (1) , the rotor (9) having an axial passageway and being supported for rotation by a hub having generally radially extending arms which are hydrodynamically profiled so as to form impellers (16) .
6. A unit as claimed in claim 5, wherein there are two axially separated hubs forming axially separated impellers (10).
7. A unit as claimed in claim 1, wherein the stator (20) is annular and the rotor is mounted for rotation within the stator (20) , the rotor having an axial passageway incorporating hydrodynamically profiled vanes (23) extending from a hub (23A) and being mounted at its ends on bushes (25) .
8. A unit as claimed in claim 7, wherein a flow-straightening diffuser (24) having static vanes is mounted at the outlet (30) of the unit in proximity to the vanes (23) forming the fluid reaction member.
PCT/GB1991/000288 1990-02-22 1991-02-22 Combined electric motor and pump unit WO1991013256A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909004052A GB9004052D0 (en) 1990-02-22 1990-02-22 A sealless pump
GB9004052.8 1990-02-22

Publications (1)

Publication Number Publication Date
WO1991013256A1 true WO1991013256A1 (en) 1991-09-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/000288 WO1991013256A1 (en) 1990-02-22 1991-02-22 Combined electric motor and pump unit

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AU (1) AU7337991A (en)
GB (1) GB9004052D0 (en)
WO (1) WO1991013256A1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0567688A1 (en) * 1992-04-30 1993-11-03 Götz Heidelberg Fluid conveying device, particularly a fan
US5474429A (en) * 1994-01-11 1995-12-12 Heidelberg; Goetz Fluid-displacement apparatus especially a blower
FR2797308A1 (en) * 1999-08-05 2001-02-09 Bosch Gmbh Robert FUEL SUPPLY UNIT FOR INTERNAL COMBUSTION ENGINE
GB2399145A (en) * 2003-01-30 2004-09-08 Rolls Royce Plc Gear pump with electromagnetic drive
KR20160147727A (en) * 2014-02-28 2016-12-23 프로젝트 피닉스, 엘엘씨 Pump integrated with two independently driven prime movers
JP2017521600A (en) * 2014-07-22 2017-08-03 プロジェクト・フェニックス・エルエルシー External gear pump integrated with two independently driven prime movers
JP2017529506A (en) * 2014-09-23 2017-10-05 プロジェクト・フェニックス・エルエルシー System for pumping fluid and its control
US10294936B2 (en) 2014-04-22 2019-05-21 Project Phoenix, Llc. Fluid delivery system with a shaft having a through-passage
US10465721B2 (en) 2014-03-25 2019-11-05 Project Phoenix, LLC System to pump fluid and control thereof
US10539134B2 (en) 2014-10-06 2020-01-21 Project Phoenix, LLC Linear actuator assembly and system
US10544861B2 (en) 2014-06-02 2020-01-28 Project Phoenix, LLC Hydrostatic transmission assembly and system
US10544810B2 (en) 2014-06-02 2020-01-28 Project Phoenix, LLC Linear actuator assembly and system
US10677352B2 (en) 2014-10-20 2020-06-09 Project Phoenix, LLC Hydrostatic transmission assembly and system
US10784750B2 (en) 2018-06-12 2020-09-22 General Electric Company Electric motor having an integrated cooling system and methods of cooling an electric motor
US10808732B2 (en) 2014-09-23 2020-10-20 Project Phoenix, LLC System to pump fluid and control thereof
US10865788B2 (en) 2015-09-02 2020-12-15 Project Phoenix, LLC System to pump fluid and control thereof
US11085440B2 (en) 2015-09-02 2021-08-10 Project Phoenix, LLC System to pump fluid and control thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918209A (en) * 1957-05-14 1959-12-22 Schueller Otto Motor-compressor unit
US3164096A (en) * 1962-09-24 1965-01-05 W Dan Bergman Ab Pumps with incorporated motor
DE2012560A1 (en) * 1970-03-17 1971-09-30 Sieper H Rotary pumps, in particular fuel pumps for internal combustion engines
FR2165633A5 (en) * 1971-12-20 1973-08-03 Maschf Augsburg Nuernberg Ag
DE3621967A1 (en) * 1986-07-01 1988-01-14 Heinrich Josef Lettmann Pipe-shaped pump unit with drive motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918209A (en) * 1957-05-14 1959-12-22 Schueller Otto Motor-compressor unit
US3164096A (en) * 1962-09-24 1965-01-05 W Dan Bergman Ab Pumps with incorporated motor
DE2012560A1 (en) * 1970-03-17 1971-09-30 Sieper H Rotary pumps, in particular fuel pumps for internal combustion engines
FR2165633A5 (en) * 1971-12-20 1973-08-03 Maschf Augsburg Nuernberg Ag
DE3621967A1 (en) * 1986-07-01 1988-01-14 Heinrich Josef Lettmann Pipe-shaped pump unit with drive motor

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0567688A1 (en) * 1992-04-30 1993-11-03 Götz Heidelberg Fluid conveying device, particularly a fan
US5474429A (en) * 1994-01-11 1995-12-12 Heidelberg; Goetz Fluid-displacement apparatus especially a blower
FR2797308A1 (en) * 1999-08-05 2001-02-09 Bosch Gmbh Robert FUEL SUPPLY UNIT FOR INTERNAL COMBUSTION ENGINE
GB2399145A (en) * 2003-01-30 2004-09-08 Rolls Royce Plc Gear pump with electromagnetic drive
US11118581B2 (en) 2014-02-28 2021-09-14 Project Phoenix, LLC Pump integrated with two independently driven prime movers
JP2017506721A (en) * 2014-02-28 2017-03-09 プロジェクト・フェニックス・エルエルシー Pump integrated with two independently driven prime movers
JP7145585B2 (en) 2014-02-28 2022-10-03 プロジェクト・フェニックス・エルエルシー Pump and method of moving fluid from first port to second port of pump
EP3879107A1 (en) * 2014-02-28 2021-09-15 Project Phoenix LLC Pump integrated with two independently driven prime movers
US11713757B2 (en) 2014-02-28 2023-08-01 Project Phoenix, LLC Pump integrated with two independently driven prime movers
KR20160147727A (en) * 2014-02-28 2016-12-23 프로젝트 피닉스, 엘엘씨 Pump integrated with two independently driven prime movers
JP7236421B2 (en) 2014-02-28 2023-03-09 プロジェクト・フェニックス・エルエルシー Pump and method of moving fluid from first port to second port of pump
KR102252260B1 (en) * 2014-02-28 2021-05-13 프로젝트 피닉스, 엘엘씨 Pump integrated with two independently driven prime movers
EP3111092B1 (en) * 2014-02-28 2021-04-21 Project Phoenix LLC Pump integrated with two independently driven prime movers
JP2021021398A (en) * 2014-02-28 2021-02-18 プロジェクト・フェニックス・エルエルシー Pump, and method of transferring fluid from first port to second port of pump
IL285741B1 (en) * 2014-02-28 2023-06-01 Project Phoenix Llc Pump integrated with two independently driven prime movers
US10465721B2 (en) 2014-03-25 2019-11-05 Project Phoenix, LLC System to pump fluid and control thereof
US10294936B2 (en) 2014-04-22 2019-05-21 Project Phoenix, Llc. Fluid delivery system with a shaft having a through-passage
US11280334B2 (en) 2014-04-22 2022-03-22 Project Phoenix, LLC Fluid delivery system with a shaft having a through-passage
US10544810B2 (en) 2014-06-02 2020-01-28 Project Phoenix, LLC Linear actuator assembly and system
US10544861B2 (en) 2014-06-02 2020-01-28 Project Phoenix, LLC Hydrostatic transmission assembly and system
US11867203B2 (en) 2014-06-02 2024-01-09 Project Phoenix, LLC Linear actuator assembly and system
US11067170B2 (en) 2014-06-02 2021-07-20 Project Phoenix, LLC Hydrostatic transmission assembly and system
US11060534B2 (en) 2014-06-02 2021-07-13 Project Phoenix, LLC Linear actuator assembly and system
US10738799B2 (en) 2014-06-02 2020-08-11 Project Phoenix, LLC Linear actuator assembly and system
US10995750B2 (en) 2014-07-22 2021-05-04 Project Phoenix, LLC External gear pump integrated with two independently driven prime movers
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GB9004052D0 (en) 1990-04-18

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