EP3405650A1 - Pump assembly having an axial-flux electric drive - Google Patents
Pump assembly having an axial-flux electric driveInfo
- Publication number
- EP3405650A1 EP3405650A1 EP17707223.8A EP17707223A EP3405650A1 EP 3405650 A1 EP3405650 A1 EP 3405650A1 EP 17707223 A EP17707223 A EP 17707223A EP 3405650 A1 EP3405650 A1 EP 3405650A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- stator
- side wall
- drive
- pump arrangement
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims description 19
- 239000004202 carbamide Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- 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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
-
- 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
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
-
- 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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/008—Enclosed motor pump units
-
- 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
- F04C2210/00—Fluid
- F04C2210/10—Fluid working
- F04C2210/1083—Urea
-
- 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
- F04C2240/00—Components
- F04C2240/40—Electric motor
-
- 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
- F04C2240/00—Components
- F04C2240/40—Electric motor
- F04C2240/402—Plurality of electronically synchronised motors
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
- F04C2240/51—Bearings for cantilever assemblies
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
Definitions
- the present invention relates to a pump assembly, at least comprising a first housing in which at least a first drive means for conveying a fluid is rotatably mounted, wherein a first drive shaft of the first drive means extends at least through a first side wall of the first housing along an axial direction
- the pump arrangement is a delivery device for a water-urea solution (for example Adblue), which is preferably used in a motor vehicle for treating an exhaust gas of an internal combustion engine.
- the invention relates to a pump assembly, at least comprising a first housing in which at least a first drive means for conveying a fluid is rotatably mounted, wherein a first drive shaft of the first drive means extends at least through a first side wall of the first housing along an axial direction; wherein at least one first rotor of a first axial flow electric drive is arranged outside the first housing on the first drive shaft, wherein the first axial flow electric drive has only one (first stator assigned to the first axial flux electric drive and first rotor) second) stator).
- the first housing encloses at least the first drive means liquid-tight, wherein connections are provided for supplying and discharging the fluid to be delivered.
- the first drive shaft extends through a first side wall of the first housing, wherein also here a liquid-tight seal between the first side wall and the first drive shaft is provided.
- a first rotor of a first axial flow electric drive (AFM: Axialtikmotor) is provided, which is arranged on the first drive shaft for transmitting a torque to the first drive means. Due to the separate arrangement of drive means and electric drive damage to the electric drive can be avoided by the pumped fluid.
- the first housing encloses at least the first drive means, wherein connections are provided for supplying and discharging the fluid to be delivered.
- the first drive shaft extends through a first side wall of the first housing.
- a first rotor of a first axial flow electric drive (AFM: Axialtikmotor) is provided, which is arranged on the first drive shaft for transmitting a torque to the first drive means.
- the first housing is not made liquid-tight, so that the fluid to be delivered as a leakage current, for. B. along the first drive shaft, can emerge from the first housing.
- the first housing is preferably designed so that as a result of this leakage flow from the first housing (ie, a fluid drain and / or fluid flow not exclusively via the connections for supply and discharge of the fluid) there is no significant impairment of the delivery rate of the pump assembly.
- the leakage current is at most 5% of the delivery rate (of the delivery volume flow) of the pump arrangement.
- the first axial flow electric drive comprises a (single) stator and a first rotor, which are arranged coaxially with each other.
- the stator may comprise a soft magnetic material, for example a so-called “soft magnetic composite” (SMC), or a combination of electrical sheets and SMC
- SMC soft magnetic composite
- the coils of the stator comprise cores, which are preferably pressed from a soft magnetic material and made obtuse The material is not sintered in this case, rather a tempering takes place below a melting temperature, which is sufficient, however, for the cores to retain their geometry permanently.
- the rotor of the axial flow electric drive can have permanent magnets or even soft magnetic elements, for example in recesses.
- permanent magnets as Axialpound- electric motor, a permanent-magnet synchronous brushless or DC motor, abbreviated BLDC, are formed, while, for example, with soft magnetic elements, a reluctance motor can be created as an electric motor in the axial design.
- stator in particular using SMC and further details also relating to a rotor, for example, emerge from the applicant's post-published PCT / EP2015 / 075036, to which reference is made within the scope of the disclosure of the present invention.
- the first axial flow electric drive has an electrical power consumption of less than 100 watts, preferably less than 50 watts.
- the fluid is conveyed with a delivery pressure of at most 10 bar.
- the first drive shaft outside the first housing is stored unsupported or by at least one bearing which receives exclusively in the axial direction acting forces.
- the first drive shaft is therefore mounted in particular exclusively in the first housing, so that the space for otherwise required bearings outside the first housing is not needed. For a particularly compact design of the pump assembly is possible.
- At least the first drive shaft is supported exclusively via the first housing, for. B. on the first side wall and / or a second side wall, in particular, the material of the side walls forms the bearing surface.
- a leakage flow of the fluid to be delivered along the first drive shaft can cause a lubrication of the bearings.
- a pressure chamber of the pump arrangement is fluidly connected to an area outside the first housing via an opening at least in the first side wall. the.
- a volume flow (controlled in terms of quantity) of the fluid to be delivered can emerge from the first housing and flow back into the first housing via the bearings.
- the first Axialmann- electric drive is arranged in a second housing that is repeatably connected to the first housing releasably connectable.
- the first Axialpound- electric drive is arranged protected from the fluid to be delivered, wherein the individual components of the pump assembly are independently exchangeable and / or to be maintained.
- the first rotor is arranged immediately adjacent to the first side wall and between the first side wall and a stator of the first axial flow electric drive.
- the first drive shaft can be made very short, since the first rotor connected to the first drive shaft is disposed immediately adjacent to the first end wall, through which the first drive shaft, starting from the first housing, extends into the second housing.
- a stator of the first Axialpound- electric drive is disposed immediately adjacent to the first side wall and between the first side wall and the first rotor.
- the first drive shaft is longer, since it also extends through the stator through to the first rotor.
- the stator (ie its components, in particular coils, cores and return ring) is preferably arranged in a radial direction outside the at least one first drive means.
- the stator ie at least one of the components of coil, core and return ring
- the stator is overlapping with the first along the axial direction Housing, preferably overlapping with at least one bearing of the first drive shaft, particularly preferably arranged overlapping with the at least one first drive means.
- This preferred embodiment allows a particularly compact design of the pump assembly, wherein (at least) the at least one first drive means, the first side wall and the first rotor along the axial direction are arranged side by side and thus determine the size of the pump assembly along the axial direction.
- stator is inseparably connected to the first side wall.
- stator forms at least a part of the first end wall.
- the first drive means is a first gear rotor.
- the gear pump may be a screw pump.
- At least the first gear rotor is made of a plastic.
- the gear rotor having, in addition to the porosity, a further noise reduction means.
- the variations in density can be rotationally symmetrical or local. Also possible is a gear rotor in disc arrangement with different densities executed.
- the angle of the plane of the individual layers may differ from the preferred plane, the horizontal plane of the component. Since the structure-borne noise spreads better in materials with higher density than in materials with lower density, it is also possible to introduce sound guide channels in the gear rotor or only in the teeth, which deflect or weaken the structure-borne sound waves targeted.
- the channels and / or local density variations can be filled with pure material of different densities as well as combinations of different materials such as iron powder or oil.
- Manufacturing process such as a conventional pressing of metallic powder, as it also results in modified form from WO 2013/067995 AI, as well as an additive production of metallic material and / or plastic, for example with a device, as described in DE 10 2013 103006 AI shows as an example, can also be used, in particular to produce low-noise gear rotors.
- production processes as basically disclosed in EP 2 221 131 A1, EP 1 407 877 A1, EP 1 34527 A2 or also JP S60-162702 A.
- the stator is formed by the first housing. For example, this can be embedded in the first housing, the stator.
- the stator can be inserted into the first housing.
- an outer side of the first housing may have a cutout into which the stator can be pressed.
- the first housing in this area may be made of plastic while the stator is made of metallic material.
- a return ring can be pressed, on which the stator poles are arranged.
- stator that is to say at least one of the components of coil, core and return ring
- stator is arranged overlapping with at least one bearing of the first drive shaft, particularly preferably overlapping with the at least one first drive means.
- the first housing has an amagnetic material at least in a region adjacent to the stator, preferably the electromagnetic return ring and in particular to the cores of the stator.
- a second Axialpound- electric drive outside of the first housing and on a, the first side wall opposite the second side wall of the first housing is arranged; wherein the second Axiallase electric drive is connected either to the first drive shaft or to a second drive shaft of a arranged in the first housing second drive means for transmitting torque.
- the second Axiallase- electric drive with the second drive shaft is connected to transmit torque
- the second drive means is a second gear rotor, which is arranged to mesh with the first gear rotor for conveying the fluid, wherein the two gear rotors via the two axial flow electric drives braced are arranged to each other.
- the tension of the two gear wheels causes a constantly backlash-free meshing of the gear wheels, so that noise can be minimized.
- this tension can also be set when the direction of rotation of the drive means is reversed (for example when a water-urea solution is reclaimed into a tank to prevent ice formation in the lines).
- the two Axialen electric drives are indeed the same structure, but offset with respect to the arrangement of the stator poles arranged at opposite ends of the gear rotor.
- the offset can be designed such that the wave trough, caused by the first axial flow electric drive, and Wellenberg, caused by the second axial flow electric drive, virtually overlap in their torque effect. This achieves a balanced, especially more uniform drive of the gear rotor. This in turn leads to a reduction of noise emissions on the intermeshing gears.
- the equalization of the torque on the driven shaft leads in particular to a quieter contacting of the individual teeth of the meshing gears. An impact of the meshing teeth can be minimized at least.
- the first axial-flow electric drive forms at least one heating element which is thermally conductively connected to the first side wall via at least one heat-conducting structure.
- the one stator with his Coils can be used as a heating element of the first housing.
- the heat development occurring there can, for. B. are introduced conductively via the first side wall in the first housing.
- a corresponding current can be made available, which flows through the coils of the stator poles.
- the stator is completely connected to the rear surface with the first housing, ie z. B. forms the first side wall itself.
- the stator is therefore preferably mounted as a first side wall directly on the first housing or z. B. used in a designed as a lid of the first housing first side wall.
- a metallic, electrically conductive powder can be used for producing the stator or the first side wall or of heat conducting structures, for example in the case of a rotationally rotating filling shoe for filling with at least two different materials, as for example from DE 10 2014 006 374 is apparent.
- conductive heat paths heat conduction structure
- electrically heatable paths heat conduction structure
- the first side wall forms at least part of a fluid-carrying channel.
- at least a part of the side wall contacts the conveyed fluid in the region of the channel (eg in the region of the drive means).
- this portion is formed with a heat-conducting structure, so that the heat generated in the region of the stator can be delivered via the heat-conducting structure targeted to the fluid.
- a temperature sensor can be used for the heat generation.
- a temperature sensor may be attached to the pump assembly itself.
- an existing temperature sensor on a power electronics of the pump assembly is used to decide whether and how much a current is sent through the stator.
- Such can be stored for example in a control unit, which is assigned to the urea injection.
- the heating can take place even before the actual start of the internal combustion engine. If one thinks of today's keyless systems for opening and starting, therefore, the opening could already trigger the precautionary heating.
- a heating of the pump itself would be possible, for example, is supplemented with heat, for example, by a tank heating or waste heat from a still warm combustion engine.
- the system could be immediately operational or remain operational even at low temperatures.
- a compensation of a different thermal expansion of the different materials is provided in the pump assembly.
- the fluid or the urea solution can be exposed to temperatures that may fluctuate greatly due to environmental conditions, for example during low frost of, for example, -35 ° C. and due to the conditions during the injection of the urea solution of at least short-term + 100 ° C. This also has an effect on the individual components, which already stretch or contract differently due to the ambient temperature. Therefore, the pump assembly may, for example, have in its interior a spring-loaded tracking, which allows a minimization of, for example, otherwise resulting gap dimensions.
- the motor vehicle urea pump may also have a second gear on a second shaft, wherein the two gears mesh with each other and thereby build up a pressure.
- Both gears can be made of the same material. But it can also be both gears
- the one gear may consist of a plastic, the other gear of a metal.
- compound gears may be used, that is, the gear has different materials, such as a core of metal and a surface of plastic or vice versa.
- Helical gears are preferably used in intermeshing gears. However, it can also be advantageous for the pressure increase to use straight-toothed gears.
- the gear or gears are produced as a spur gear wheels with a manufacturing quality in which the gear quality of the gear designed according to DIN 3961 and DIN 3962 with respect to at least one parameter, preferably a total profile error F a , a profile angle error fka and a profile shape error f a of at least the quality 6, preferably of at least the quality 5 or better at at least one of these values, in particular at least these three values.
- the first housing may also have an additional damping, by means of which a pumping noise is reduced.
- Such density variations as described above can be used here, for example.
- Other ways described herein to minimize structure-borne noise in or on the housing can be used to achieve the additional damping.
- FIG. 1 shows an exploded view of a first pump arrangement in a perspective view
- FIG. 2 shows the exploded view of the first pump arrangement according to FIG. 1 in a side view in section
- FIG. 3 shows the first pump arrangement according to FIGS. 1 and 2 in a side view in section
- FIG. 4 shows the first pump arrangement according to FIG. 3 in a plan view
- FIG. 5 shows an exploded view of a second pump arrangement in a perspective view
- FIG. 6 shows the exploded view of the second pump arrangement according to FIG.
- FIGS. 5 and 6 shows the second pump arrangement according to FIGS. 5 and 6 in a side view in section
- FIG. 9 shows a fourth pump arrangement in a side view
- 10 shows a fifth pump arrangement in a side view
- FIG. 11 shows a sixth pump arrangement in a side view.
- FIG. 1 shows an exploded view of a first pump arrangement 1 in a perspective view.
- 2 shows the exploded view of the first pump arrangement 1 according to FIG. 1 in a side view in section.
- 3 shows the first pump arrangement 1 according to FIGS. 1 and 2 in a side view in section, and
- FIG. 4 shows the first pump arrangement 1 according to FIG. 3 in a plan view.
- FIGS. 1 to 4 will be described together below. Inlet and outlet lines for the fluid 4 and electrical components (control unit, electrical connections, etc.) are not shown here, since their arrangement is usually known to those skilled in the art.
- the pump arrangement 1 comprises a first housing 2 with a first side wall 6 and a receptacle 10 for the drive means 3, 21; here two meshing gear rotors.
- the drive means 3, 21 are rotatably mounted in the first housing 2 for conveying a fluid 4, wherein a first drive shaft 5 of the first drive means 3 extends through the first side wall 6 of the first housing 2 along an axial direction 7 therethrough. Outside the first housing 2, a first rotor 8 of a first axial flow electric drive 9 is arranged on the first drive shaft 5.
- the first housing 2 surrounds the drive means 3, 21 in particular vapor-tight and liquid-tight, wherein connections for the supply and discharge of the fluid 4 to be delivered are provided.
- the first drive shaft 5 extends through a first side wall 6 of the first housing 2, wherein a liquid-tight seal between the first side wall 6 and the first drive shaft 5 is also provided here.
- the first axial flow electric drive 9 comprises a (first) stator 13 and a first rotor 8, which are arranged coaxially with one another.
- the spool len 15 of the stator 13 cooperate with magnets 22 of the first rotor 8 to generate a torque for driving the first rotor 8 and thus the first drive shaft 5 in the circumferential direction 16 together.
- the stator 13 has a plurality of coils 15, which are arranged uniformly spaced from one another in a circumferential direction 16 on a return plate of the stator 13.
- the first drive shaft 5 is supported only within the first housing 2 via radial bearings (which receive forces in the radial direction 24) and possibly thrust bearings (which receive forces in the axial direction 7). Outside the first housing 2, the first drive shaft 5 is arranged unsupported.
- the first Axialpound electric drive 9 is arranged in a second housing 12 that is repeatably connected to the first housing 2 releasably connected.
- the first Axialpound electric drive 9 is arranged protected from the fluid to be delivered 4, wherein the individual components of the pump assembly 1 are mutually independently interchangeable and / or to be maintained.
- the first rotor 8 is arranged immediately adjacent to the first side wall 6 and between the first side wall 6 and the stator 13 of the first axial flow electric drive 9.
- the first drive shaft 5 can be made very short, since the first rotor 8 connected to the first drive shaft 8 is disposed immediately adjacent to the first end wall 6, through which the first drive shaft 5, starting from the first housing 2, in the second housing 12 extends into it.
- FIGS. 5 to 7 show a second pump arrangement 1.
- FIG. 5 shows an exploded view 2 is a perspective view of a second pump arrangement 1.
- FIG shows the exploded view of the second pump assembly 1 according to FIG. 5 in a side view in section.
- FIG. 7 shows the second pump arrangement 1 according to FIGS. 5 and 6 in a side view in section.
- the first rotor 8 and the stator 13 are arranged reversed.
- stator 13 of the first axial flow electric drive 9 is arranged directly adjacent to the first side wall 6 and between the first side wall 6 and the first rotor 8.
- first drive shaft 5 has to be designed longer, since it also extends through the stator 13 as far as the first rotor 8.
- the stator 13 can be used with its coils 15 as a heating element 25 of the first housing 2.
- the heat development occurring there can, for. B. can be inductively introduced via the first side wall 6 in the first housing 2.
- the power electronics for example, a corresponding current can be made available for this, which flows through the coils 15 of the stator poles of the stator 13.
- the stator 13 is completely connected with its rear surface with the first housing 2, in this case with the first side wall 6.
- the first side wall 6 forms at least part of a fluid channel 4 (in the region of the first drive means 3 and the second drive means 21). In this case, at least a part of the first side wall 6 contacts the conveyed fluid 4 in the region of the channel (eg in the region of the drive means 3, 21).
- a heat conduction structure 26 is formed only in this subarea, so that the heat generated in the region of the stator 15 can be specifically delivered to the fluid 4 via the heat conduction structure 26.
- 8 shows a third pump arrangement 1 in a side view. Reference is made to the comments on FIGS. 1 to 7.
- a second axial flow electric drive 18 is arranged outside the first housing 2 in a third housing 23 and on a second side wall 19 of the first housing 2 opposite the first side wall 6.
- the second axial-flow electric drive 18 is connected in a torque-transmitting manner to a second drive shaft 20 of the second drive means 21 arranged in the first housing 2, wherein the second drive means 21 is a second gear wheel which is arranged in mesh with the first gear wheel for conveying the fluid 4.
- 9 shows a fourth pump arrangement 1 in a side view. Reference is made to the comments on FIG. 8.
- the second axial flow electric drive 18 is connected to transmit torque to the first drive shaft 5.
- 10 shows a fifth pump arrangement 1 in a side view.
- the stator 13 (ie its components, coils 15, cores and return ring 14) is arranged in a radial direction 24 outside the at least one first drive means 3.
- the stator 13 ie at least one of the components of coils 15, cores and return ring 14
- the stator 13 along the axial direction 7 overlapping with the first housing 2, here overlapping with at least one bearing 11 (radial bearings, thrust bearings, plain bearings, friction bearings) of the first Drive shaft 5 and arranged overlapping with the at least one first drive means 3.
- This preferred embodiment makes possible a particularly compact construction of the pump arrangement 1, wherein (exclusively) the at least one first drive means 3, the first side wall 6 (with the bearing 11 eg as part of the first side wall 6) and the first rotor 8 along the axial direction 7 are arranged side by side and thus determine the size of the pump assembly 1 along the axial direction 7.
- 11 shows a sixth pump arrangement 1 in a side view. Reference is made to the comments on Figs. 1 to 4.
- the first drive shaft 5 is arranged outside of the first housing 2 supported by a bearing 11, the bearing 11 receiving forces acting exclusively in the axial direction 7.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19202447.9A EP3617448B1 (en) | 2016-02-22 | 2017-02-22 | Pump assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016103051.1A DE102016103051A1 (en) | 2016-02-22 | 2016-02-22 | pump assembly |
PCT/EP2017/053992 WO2017144499A1 (en) | 2016-02-22 | 2017-02-22 | Pump assembly having an axial-flux electric drive |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19202447.9A Division EP3617448B1 (en) | 2016-02-22 | 2017-02-22 | Pump assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3405650A1 true EP3405650A1 (en) | 2018-11-28 |
EP3405650B1 EP3405650B1 (en) | 2019-10-23 |
Family
ID=58162546
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17707223.8A Active EP3405650B1 (en) | 2016-02-22 | 2017-02-22 | Pump assembly having an axial-flux electric drive |
EP19202447.9A Active EP3617448B1 (en) | 2016-02-22 | 2017-02-22 | Pump assembly |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19202447.9A Active EP3617448B1 (en) | 2016-02-22 | 2017-02-22 | Pump assembly |
Country Status (5)
Country | Link |
---|---|
US (1) | US20190055941A1 (en) |
EP (2) | EP3405650B1 (en) |
CN (1) | CN108884713B (en) |
DE (1) | DE102016103051A1 (en) |
WO (1) | WO2017144499A1 (en) |
Families Citing this family (4)
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DE102018101330A1 (en) * | 2018-01-22 | 2019-07-25 | Logicdata Electronic & Software Entwicklungs Gmbh | Linear actuator for a furniture system, electrically adjustable furniture system, installation method for a linear actuator in a furniture system and furniture system arrangement |
DE102018105136A1 (en) * | 2018-03-06 | 2019-09-12 | Gkn Sinter Metals Engineering Gmbh | Method for operating a pump arrangement |
DE102018105129A1 (en) | 2018-03-06 | 2019-09-12 | Gkn Sinter Metals Engineering Gmbh | Method for operating an electric motor |
DE102019110511A1 (en) * | 2019-04-23 | 2020-10-29 | Schwäbische Hüttenwerke Automotive GmbH | Pump device with a cover and a fluid line |
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-
2016
- 2016-02-22 DE DE102016103051.1A patent/DE102016103051A1/en not_active Withdrawn
-
2017
- 2017-02-22 WO PCT/EP2017/053992 patent/WO2017144499A1/en active Application Filing
- 2017-02-22 EP EP17707223.8A patent/EP3405650B1/en active Active
- 2017-02-22 CN CN201780012791.1A patent/CN108884713B/en active Active
- 2017-02-22 US US16/078,257 patent/US20190055941A1/en active Pending
- 2017-02-22 EP EP19202447.9A patent/EP3617448B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN108884713B (en) | 2021-06-22 |
CN108884713A (en) | 2018-11-23 |
US20190055941A1 (en) | 2019-02-21 |
WO2017144499A1 (en) | 2017-08-31 |
EP3617448A1 (en) | 2020-03-04 |
EP3617448B1 (en) | 2023-03-29 |
EP3405650B1 (en) | 2019-10-23 |
DE102016103051A1 (en) | 2017-08-24 |
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