US20160341202A1 - Electric motor and electric pump - Google Patents
Electric motor and electric pump Download PDFInfo
- Publication number
- US20160341202A1 US20160341202A1 US15/157,687 US201615157687A US2016341202A1 US 20160341202 A1 US20160341202 A1 US 20160341202A1 US 201615157687 A US201615157687 A US 201615157687A US 2016341202 A1 US2016341202 A1 US 2016341202A1
- Authority
- US
- United States
- Prior art keywords
- pump
- disc type
- magnet
- rotor
- stator
- 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.)
- Abandoned
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Classifications
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- 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
- F04D13/0693—Details or arrangements of the wiring
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- 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
- F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
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- 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
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
- F04D13/027—Details of the magnetic circuit
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- 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
- F04D13/0606—Canned motor pumps
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- 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
- F04D29/2205—Conventional flow pattern
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
Definitions
- This invention relates to an electric pump, and in particular, to an electric pump having a disc type electric motor and to a disc type electric motor.
- Electric pumps for home appliances such as dish washing machines, generally adopt a direct current electric motor with a radial gap or an induction motor with a radial gap.
- these electric motors have a comparatively long axial dimension and a complicated structure.
- the present invention provides an electric pump, comprising: a pump body; a pump magnet rotatably disposed in the pump body; an impeller disposed in the pump body and fixed to the pump magnet; and a disc type electric motor positioned beneath the pump body for rotating the magnet and the impeller, the disc type electric motor comprising a stator and a rotor, the stator comprising: a stator core, a number of disc type coils fixed to a surface of the stator core, and a circuit board positioned on an end of the stator and electrically connected to the disc type coils, the rotor comprising a rotor magnet positioned between the disc type coils and the pump body, the magnet being positioned confronting the pump magnet to produce a magnetic coupling between the rotor magnet and the pump magnet, wherein when electrical power is applied to the circuit board, the disc type coils generate an axial magnetic field to drive the rotor, thereby rotating the pump magnet and the impeller.
- a plurality of fasteners secure the disc type electric motor to the pump body.
- each tab has a through hole, the fasteners engage the through holes to secure the disc type electric motor to the pump body.
- an iron sheet is fixed to the pump magnet, providing a flux return path.
- the present invention provides a disc type electric motor, having a stator and a rotor, the stator comprising: a stator core; a number of disc type coils fixed to a surface of the stator core; a circuit board positioned on an end of the stator core and electrically connected to the disc type coils, the rotor rotatably positioned above the disc type coils and comprising a rotor magnet; and wherein when the circuit board is energized, the disc type coils generate an axial magnetic field to rotate the rotor.
- the stator has a plurality of grooves and through holes through which ends of windings of the disc type coils pass.
- the stator core has a plurality of first through holes arranged in the circumferential direction, through which the windings of the disc type coils pass to reach a lower surface of the stator core.
- the motor comprises a plurality of bobbins, a plurality of positioning members, and a plurality of second through holes formed in the stator core and arranged in the circumferential direction, wherein the disc type coils are wound around the bobbins, each bobbin defines a third through hole, and each positioning member extends through a respective third through hole and a respective second through hole to secure a respective bobbin to the stator core.
- the rotor magnet is annular with a plurality of grooves formed in a radially inner surface and spaced in the circumferential direction, a solid glue is applied to the grooves to secure the rotor magnet to a shaft of the rotor.
- the disc type electric motor further comprises a solid glue layer, the solid glue layer is applied on an lower surface of the stator core and covers exposed parts of the windings of the coils.
- the present invention provides an electric pump, comprising: a pump body; a pump magnet received in the pump body; an impeller received in the pump body and fixed to the pump magnet; a disc type electric motor for rotating the pump magnet and the impeller; and an iron sheet fixed between the pump magnet and the impeller.
- the present invention provides an electric pump, comprising: a pump body; an impeller received in the pump body; an electric motor for driving the impeller, wherein the electric motor is a disc type electric motor and drives the impeller through a magnetic coupling.
- a pump magnet is fixed to the impeller within the pump body; and an iron sheet is fixed between the pump magnet and the impeller.
- the disc type electric motor is an electric motor as defined in the second aspect above.
- Advantages of the present invention include providing an electric pump with short axial dimension, which meets the trend of miniaturization of home appliances. Further advantages of specific embodiments may be understood from the description of the preferred embodiments.
- FIG. 1 is a schematic view of an electric pump in accordance with a preferred embodiment of the invention
- FIG. 2 is a sectional view of the electric pump of FIG. 1 ;
- FIG. 3 is a view of an electric motor, being a part of the pump of FIG. 1 ;
- FIG. 4 is a view of an electric motor according to a second embodiment
- FIG. 5 illustrates the electric motor of FIG. 4 , with a rotor removed
- FIG. 6 illustrates the electric motor of FIG. 3 or 4 , viewed from another aspect.
- FIG. 1 is a schematic view of an electric pump 1 in accordance with a preferred embodiment of the invention.
- FIG. 2 is a sectional view of the pump.
- the pump 1 includes a pump body 10 , a pump magnet 14 disposed in the pump body 10 , an impeller 11 disposed in the pump body 10 and fixed with the pump magnet 14 , and a disc type electric motor 20 for rotating the pump magnet 14 and the impeller 11 within the pump body 10 .
- the disc type electric motor 20 is a brushless electric motor. In other embodiments, the disc type electric motor 20 may be a brush type electric motor.
- the pump magnet 14 and the impeller 11 are rotatably fixed to an inner surface of a bottom of the pump body 10 via a spindle 12 and a bearing (not shown), such that the impeller and pump magnet are able to rotate about the axis of the spindle within the pump body 10 .
- the spindle 12 may or may not be rotatable.
- the pump 10 includes a water inlet 110 and a water outlet 111 .
- the disc type electric motor 20 includes a rotor 21 and a stator 25 .
- the stator includes a stator core 255 and a number of disc type coils 24 fixed to a surface of the stator core 255 .
- a circuit board 23 is fixed to the stator core 255 and is electrically connected to the disc type coils 24 .
- the rotor 21 is positioned above the disc type coils 24 , and is rotatably connected to the stator 25 via a shaft 27 and a bearing 250 .
- the rotor 21 has a rotor magnet 212 .
- the coils 24 are energized and generate an axial magnetic field, that causes the rotor 21 to rotate.
- the rotor 21 is disc shaped and the stator core 255 is a flat plate.
- the stator 25 and the circuit board 23 may be integrally formed.
- a plurality of spaced tabs 26 extend outwardly in a radial direction from the stator. Each tab 26 has a through hole 22 .
- the motor 20 is fixed to an external surface of a bottom of the pump body 10 by a plurality of fasteners 30 (as shown in FIG. 2 ) engaging in the through holes 22 of the tabs 26 .
- the fasteners 30 are screws. Three tabs 26 and fasteners 30 are used in this embodiment but the number may vary according to need. In other embodiments, the fastener 30 may be fixed to the external surface of the bottom of the pump body 10 by other means, such as welding.
- the rotor magnet 212 is annular.
- a radially inner circumferential surface of the rotor magnet has a number of interleaved protrusions 210 and grooves 211 .
- Solid glue 213 is applied into the groove 211 to secure the shaft 27 to a middle of the rotor magnet 212 .
- the protrusions 210 are configured to generate a relative larger surface area for the glue to bond to the rotor magnet.
- the main gradient of the solid glue is epoxy resin.
- a plurality of spaced grooves 253 are defined at a radial outer surface of the stator 25 .
- An end of the windings of the coils 24 extends through a respective groove 253 to a lower surface of the stator core.
- the stator 25 has a plurality of first through holes 251 and a plurality of second through holes 252 arranged in the circumferential direction.
- a circle on which the first through holes 251 are located and a circle on which the second through holes are located are concentric.
- the first through holes 251 allow the other end of the windings of the disc type coils 24 to pass through the stator core 255 .
- the disc type electric motor 20 further includes a plurality of bobbins 29 and a plurality of positioning members 291 .
- Each bobbin 29 defines a third through hole 290 .
- Each positioning member 291 extends through a third through hole 290 and a second through hole 252 to secure the corresponding bobbin 29 to the surface of the stator 25 .
- Each coil 24 is wound around a respective bobbin 29 .
- each bobbin 29 has a trapezoidal shape.
- the positioning members may be integrally formed with the bobbins.
- the disc type electric motor 20 further includes a solid glue 28 .
- the solid glue 28 is applied on the lower surface of the stator 25 , the outer surface of the stator 25 and those parts of the disc type coil 24 that are exposed to air, thereby completely isolating the windings of the coils 24 from the external environment, reducing potential damage to the disc type coil 24 .
- the electric pump 1 includes an iron sheet 13 fixed above the pump magnet 14 .
- the iron sheet 13 provides a magnetic flux return path, to enhance the magnetic field intensity.
- the electric pump 1 When the electric pump 1 is used, electrical power is supplied to the circuit board 23 , energizing the coils 24 to generate an axial magnetic field.
- the axial magnetic field drives the rotor 21 .
- Rotation of the rotor 21 drives the pump magnet 14 in the pump body 10 causing the impeller 11 to rotate.
- the iron sheet 13 fixed above the pump magnet 14 forms a magnetic flux return path, thereby enhancing the magnetic field intensity, and forming a better magnetic connection between the rotor magnet and the pump magnet, through which the rotor 21 drives the impeller 11 .
- the rotor of the disc type electric motor 20 is not physically connected to the pump magnet 14 in the pump body 10 via a spindle or shaft, and does not extend into an inside of the pump body. Rather, the rotor of the disc type electric motor 20 and the impeller 11 are located on opposite sides of a continuous bottom wall portion of the pump. Thus the motor is isolated from the working fluid of the pump and there are no seals that may fail leading to leakage of liquid from the pump and/or failure of the motor.
- the height of the pump can be kept small while eliminating the need for shaft seals and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
- This non-provisional patent application claims priority under 35 U.S.C. §119(a) from Patent Application No. 201510253238.X filed in The People's Republic of China on May 18, 2015, the entire contents of which are hereby incorporated by reference.
- This invention relates to an electric pump, and in particular, to an electric pump having a disc type electric motor and to a disc type electric motor.
- Electric pumps for home appliances, such as dish washing machines, generally adopt a direct current electric motor with a radial gap or an induction motor with a radial gap. However, these electric motors have a comparatively long axial dimension and a complicated structure.
- Hence there is a desire for an electric pump having a short axial dimension.
- Accordingly, in one aspect thereof, the present invention provides an electric pump, comprising: a pump body; a pump magnet rotatably disposed in the pump body; an impeller disposed in the pump body and fixed to the pump magnet; and a disc type electric motor positioned beneath the pump body for rotating the magnet and the impeller, the disc type electric motor comprising a stator and a rotor, the stator comprising: a stator core, a number of disc type coils fixed to a surface of the stator core, and a circuit board positioned on an end of the stator and electrically connected to the disc type coils, the rotor comprising a rotor magnet positioned between the disc type coils and the pump body, the magnet being positioned confronting the pump magnet to produce a magnetic coupling between the rotor magnet and the pump magnet, wherein when electrical power is applied to the circuit board, the disc type coils generate an axial magnetic field to drive the rotor, thereby rotating the pump magnet and the impeller.
- Preferably, a plurality of fasteners secure the disc type electric motor to the pump body.
- Preferably, spaced tabs extend radially from the stator, each tab has a through hole, the fasteners engage the through holes to secure the disc type electric motor to the pump body.
- Preferably, an iron sheet is fixed to the pump magnet, providing a flux return path.
- According to a second aspect, the present invention provides a disc type electric motor, having a stator and a rotor, the stator comprising: a stator core; a number of disc type coils fixed to a surface of the stator core; a circuit board positioned on an end of the stator core and electrically connected to the disc type coils, the rotor rotatably positioned above the disc type coils and comprising a rotor magnet; and wherein when the circuit board is energized, the disc type coils generate an axial magnetic field to rotate the rotor.
- Preferably, the stator has a plurality of grooves and through holes through which ends of windings of the disc type coils pass.
- Preferably, the stator core has a plurality of first through holes arranged in the circumferential direction, through which the windings of the disc type coils pass to reach a lower surface of the stator core.
- Preferably, the motor comprises a plurality of bobbins, a plurality of positioning members, and a plurality of second through holes formed in the stator core and arranged in the circumferential direction, wherein the disc type coils are wound around the bobbins, each bobbin defines a third through hole, and each positioning member extends through a respective third through hole and a respective second through hole to secure a respective bobbin to the stator core.
- Preferably, the rotor magnet is annular with a plurality of grooves formed in a radially inner surface and spaced in the circumferential direction, a solid glue is applied to the grooves to secure the rotor magnet to a shaft of the rotor.
- Preferably, the disc type electric motor further comprises a solid glue layer, the solid glue layer is applied on an lower surface of the stator core and covers exposed parts of the windings of the coils.
- According to a third aspect, the present invention provides an electric pump, comprising: a pump body; a pump magnet received in the pump body; an impeller received in the pump body and fixed to the pump magnet; a disc type electric motor for rotating the pump magnet and the impeller; and an iron sheet fixed between the pump magnet and the impeller.
- According to a fourth aspect, the present invention provides an electric pump, comprising: a pump body; an impeller received in the pump body; an electric motor for driving the impeller, wherein the electric motor is a disc type electric motor and drives the impeller through a magnetic coupling.
- Preferably, a pump magnet is fixed to the impeller within the pump body; and an iron sheet is fixed between the pump magnet and the impeller.
- Preferably, the disc type electric motor is an electric motor as defined in the second aspect above.
- Advantages of the present invention include providing an electric pump with short axial dimension, which meets the trend of miniaturization of home appliances. Further advantages of specific embodiments may be understood from the description of the preferred embodiments.
- A preferred embodiment of the invention will now be described, by way of example only, with reference to figures of the accompanying drawings. In the figures, identical structures, elements or parts that appear in more than one figure are generally labeled with a same reference numeral in all the figures in which they appear. Dimensions of components and features shown in the figures are generally chosen for convenience and clarity of presentation and are not necessarily shown to scale. The figures are listed below.
-
FIG. 1 is a schematic view of an electric pump in accordance with a preferred embodiment of the invention; -
FIG. 2 is a sectional view of the electric pump ofFIG. 1 ; -
FIG. 3 is a view of an electric motor, being a part of the pump ofFIG. 1 ; -
FIG. 4 is a view of an electric motor according to a second embodiment; -
FIG. 5 illustrates the electric motor ofFIG. 4 , with a rotor removed; and -
FIG. 6 illustrates the electric motor ofFIG. 3 or 4 , viewed from another aspect. -
FIG. 1 is a schematic view of anelectric pump 1 in accordance with a preferred embodiment of the invention.FIG. 2 is a sectional view of the pump. Thepump 1 includes apump body 10, apump magnet 14 disposed in thepump body 10, animpeller 11 disposed in thepump body 10 and fixed with thepump magnet 14, and a disc typeelectric motor 20 for rotating thepump magnet 14 and theimpeller 11 within thepump body 10. In this embodiment, the disc typeelectric motor 20 is a brushless electric motor. In other embodiments, the disc typeelectric motor 20 may be a brush type electric motor. - In this embodiment, the
pump magnet 14 and theimpeller 11 are rotatably fixed to an inner surface of a bottom of thepump body 10 via aspindle 12 and a bearing (not shown), such that the impeller and pump magnet are able to rotate about the axis of the spindle within thepump body 10. Thespindle 12 may or may not be rotatable. Thepump 10 includes awater inlet 110 and awater outlet 111. - As shown in
FIG. 3 , the disc typeelectric motor 20 includes arotor 21 and astator 25. The stator includes astator core 255 and a number ofdisc type coils 24 fixed to a surface of thestator core 255. Acircuit board 23 is fixed to thestator core 255 and is electrically connected to thedisc type coils 24. Therotor 21 is positioned above thedisc type coils 24, and is rotatably connected to thestator 25 via ashaft 27 and abearing 250. In this embodiment, therotor 21 has arotor magnet 212. When thecircuit board 23 is connected to an external power source and is powered on, thecoils 24 are energized and generate an axial magnetic field, that causes therotor 21 to rotate. In this embodiment, therotor 21 is disc shaped and thestator core 255 is a flat plate. Thestator 25 and thecircuit board 23 may be integrally formed. - A plurality of spaced
tabs 26 extend outwardly in a radial direction from the stator. Eachtab 26 has a throughhole 22. Themotor 20 is fixed to an external surface of a bottom of thepump body 10 by a plurality of fasteners 30 (as shown inFIG. 2 ) engaging in the throughholes 22 of thetabs 26. In this embodiment, thefasteners 30 are screws. Threetabs 26 andfasteners 30 are used in this embodiment but the number may vary according to need. In other embodiments, thefastener 30 may be fixed to the external surface of the bottom of thepump body 10 by other means, such as welding. - As shown in
FIG. 4 , therotor magnet 212 is annular. A radially inner circumferential surface of the rotor magnet has a number ofinterleaved protrusions 210 andgrooves 211.Solid glue 213 is applied into thegroove 211 to secure theshaft 27 to a middle of therotor magnet 212. Theprotrusions 210 are configured to generate a relative larger surface area for the glue to bond to the rotor magnet. In this embodiment, the main gradient of the solid glue is epoxy resin. - As shown in
FIG. 5 andFIG. 6 , a plurality of spacedgrooves 253 are defined at a radial outer surface of thestator 25. An end of the windings of thecoils 24 extends through arespective groove 253 to a lower surface of the stator core. - As shown in
FIG. 6 , thestator 25 has a plurality of first throughholes 251 and a plurality of second throughholes 252 arranged in the circumferential direction. A circle on which the first throughholes 251 are located and a circle on which the second through holes are located are concentric. - The first through
holes 251 allow the other end of the windings of the disc type coils 24 to pass through thestator core 255. The disc typeelectric motor 20 further includes a plurality ofbobbins 29 and a plurality ofpositioning members 291. Eachbobbin 29 defines a third throughhole 290. Each positioningmember 291 extends through a third throughhole 290 and a second throughhole 252 to secure the correspondingbobbin 29 to the surface of thestator 25. Eachcoil 24 is wound around arespective bobbin 29. In this embodiment, eachbobbin 29 has a trapezoidal shape. Alternatively, the positioning members may be integrally formed with the bobbins. - The disc type
electric motor 20 further includes asolid glue 28. Thesolid glue 28 is applied on the lower surface of thestator 25, the outer surface of thestator 25 and those parts of thedisc type coil 24 that are exposed to air, thereby completely isolating the windings of thecoils 24 from the external environment, reducing potential damage to thedisc type coil 24. - Furthermore, the
electric pump 1 includes aniron sheet 13 fixed above thepump magnet 14. Theiron sheet 13 provides a magnetic flux return path, to enhance the magnetic field intensity. - When the
electric pump 1 is used, electrical power is supplied to thecircuit board 23, energizing thecoils 24 to generate an axial magnetic field. The axial magnetic field drives therotor 21. Rotation of therotor 21 drives thepump magnet 14 in thepump body 10 causing theimpeller 11 to rotate. At the same time, theiron sheet 13 fixed above thepump magnet 14, forms a magnetic flux return path, thereby enhancing the magnetic field intensity, and forming a better magnetic connection between the rotor magnet and the pump magnet, through which therotor 21 drives theimpeller 11. - Further, the rotor of the disc type
electric motor 20 is not physically connected to thepump magnet 14 in thepump body 10 via a spindle or shaft, and does not extend into an inside of the pump body. Rather, the rotor of the disc typeelectric motor 20 and theimpeller 11 are located on opposite sides of a continuous bottom wall portion of the pump. Thus the motor is isolated from the working fluid of the pump and there are no seals that may fail leading to leakage of liquid from the pump and/or failure of the motor. - In this embodiment of the invention, by adopting the disc type electric motor, the height of the pump can be kept small while eliminating the need for shaft seals and the like.
- In the description and claims of the present application, each of the verbs “comprise”, “include”, “contain” and “have”, and variations thereof, are used in an inclusive sense, to specify the presence of the stated item or feature but do not preclude the presence of additional items or features.
- It is appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable sub-combination.
- The embodiments described above are provided by way of example only, and various other modifications will be apparent to persons skilled in the field without departing from the scope of the invention as defined by the appended claims.
Claims (12)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201510253238.XA CN106300722A (en) | 2015-05-18 | 2015-05-18 | Motor and electrodynamic pump |
CN201510253238.X | 2015-05-18 |
Publications (1)
Publication Number | Publication Date |
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US20160341202A1 true US20160341202A1 (en) | 2016-11-24 |
Family
ID=57231790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/157,687 Abandoned US20160341202A1 (en) | 2015-05-18 | 2016-05-18 | Electric motor and electric pump |
Country Status (4)
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US (1) | US20160341202A1 (en) |
JP (1) | JP2016226269A (en) |
CN (1) | CN106300722A (en) |
DE (1) | DE102016109021A1 (en) |
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Also Published As
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DE102016109021A1 (en) | 2016-11-24 |
JP2016226269A (en) | 2016-12-28 |
CN106300722A (en) | 2017-01-04 |
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