EP3688865A1 - Entraînement de pompe électrique conçu pour une pompe volumétrique, pompe volumétrique et procédé correspondant - Google Patents

Entraînement de pompe électrique conçu pour une pompe volumétrique, pompe volumétrique et procédé correspondant

Info

Publication number
EP3688865A1
EP3688865A1 EP18740813.3A EP18740813A EP3688865A1 EP 3688865 A1 EP3688865 A1 EP 3688865A1 EP 18740813 A EP18740813 A EP 18740813A EP 3688865 A1 EP3688865 A1 EP 3688865A1
Authority
EP
European Patent Office
Prior art keywords
armature
electromagnet
piston
pump drive
electric pump
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.)
Withdrawn
Application number
EP18740813.3A
Other languages
German (de)
English (en)
Inventor
Conrad Nickel
Franz Pawellek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec GPM GmbH
Original Assignee
Nidec GPM GmbH
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 Nidec GPM GmbH filed Critical Nidec GPM GmbH
Publication of EP3688865A1 publication Critical patent/EP3688865A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
    • 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
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0069—Magnetic couplings
    • 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C9/00—Oscillating-piston machines or pumps
    • F04C9/002—Oscillating-piston machines or pumps the piston oscillating around a fixed axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0401—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs

Definitions

  • the invention relates to an electric pump drive for positive displacement pumps with oscillating piston moving, a positive displacement pump with the same and a corresponding method for oscillating movement of a piston of a positive displacement pump.
  • compressors and vacuum pumps are known, which in contrast to a type of circulating positive displacement pumps such.
  • Vane pumps perform a discontinuous, in particular reciprocal movement of pump components.
  • Displacement pumps of this kind drive displacement pistons, which oscillate between two points of inflection and thereby execute work cycles in which a charge exchange of an inflowing and outflowing delivery medium in a pumping chamber is effected.
  • Including so-called double-stroke pumps are known which in both
  • Movement directions of a piston two opposite charge change, so generate an influx on one side of the piston and an outflow on the other side of the piston in the pump chamber at the same time. Furthermore, such positive displacement pumps differ by different, in particular linear and arcuate amplitudes of the oscillating piston movement.
  • the kinematics of such a mechanism consists in converting the rotational drive movement into a reciprocal movement directed in the linear direction or in the working path of the piston. This results in an unbalanced dynamic, which manifests itself in the fact that to transfer a rotational continuous force into mutually accelerating forces dead centers must be overcome.
  • the present invention has for its object to provide an alternative pump drive for positive displacement pumps with oscillating moving piston.
  • the object is achieved by the features of the electric pump drive according to claim 1, the positive displacement pump according to claim 15 and the method according to claim 17.
  • the electric pump drive according to the invention is characterized in particular by the fact that it comprises a rotary magnet having at least one electromagnet and a pivotable about an axis armature, by means of the excitation of at least one electromagnet is mutually pivotable between two operating points, wherein the armature is adapted for coupling with an oscillatingly moving piston.
  • the positive displacement pump according to the invention with a piston oscillating between two turning points is characterized in particular in that an electric pump drive comprises a rotary magnet which has at least one electromagnet and an armature pivotable about an axis which mutually alternately by energizing the at least one electromagnet between two operating points is pivotable, wherein the armature is coupled to the piston such that the inflection points of the oscillating movement of the piston are taken at the operating points of the armature.
  • the method according to the invention for oscillating a piston of a positive displacement pump between two inflection points by means of a rotary magnet is characterized by the steps of: generating a magnetic field by an electromagnet which applies a torque to the armature in a pivoting direction until the piston reaches a point of inflection, and expelling the magnetic field from the solenoid and / or generating a magnetic field of opposite polarity through an electromagnet that applies torque to the armature in the opposite pivoting direction until the piston reaches the other inflection point.
  • the invention thus provides for the first time to use a rotary magnet as a drive source of a pump drive for a non-umlaulende positive displacement pump.
  • the present invention in its most general form is based on the finding that a pump drive optimized for the reciprocal acceleration of a displacer ideally generates an alternately alternating moment with amplitude intensity in an electrodynamic manner.
  • a demand-responsive torque is suitably provided both in its dynamic intensity and in its kinematic alignment by a rotary magnet. This represents a fundamental departure from the drive concept of a continuous torque of a circumferentially directed driving force and a kinematic conversion of the drive movement.
  • rotary magnets differ from rotating electrical machines in particular in that the executable movement of the armature of a rotary magnet is limited to a rotation angle between two operating points, that is, can not perform a complete revolution.
  • the rotary magnet is equipped depending on the embodiment, only with one or two electromagnets.
  • the rotary magnet can have a symmetrical arrangement of 4 or 6 electromagnets, as a result of which the executable rotation angle is geometrically reduced to a fraction of the factor.
  • Rotary solenoids which are also referred to as rotary solenoids are actuators, which are known for example from plant engineering to convert a switch in a conveyor line or a so-called shutter as a baffle in a sorting path between two positions of a fork or fork.
  • proportional rotary magnet or rotary magnet with a return spring and bistable rotary magnet with an alternately reversed electromagnet or two alternately excited electromagnet.
  • the power transmission can be made by a polarity between the permanent magnet of the armature and fixed electromagnet, or the reluctance principle between armature poles and pole pieces of a magnetic circuit of a fixed electromagnet, such as by a pole ring.
  • Known rotary magnets also differ in their construction, for example by a radial or axial arrangement between armature and electromagnet, whereby a torque of a rotational R el ati v Gay is generated, or an axial arrangement with wedge-shaped grooves or surfaces and rolling elements between armature and Electromagnet, whereby an axially generated moment is converted into a helical relative movement.
  • a radial or axial arrangement between armature and electromagnet whereby a torque of a rotational R el ati vwar is generated
  • an axial arrangement with wedge-shaped grooves or surfaces and rolling elements between armature and Electromagnet whereby an axially generated moment is converted into a helical relative movement.
  • a rotary magnet With a rotary magnet can be increased by short-term over-excitation of the electromagnet, the magnetic force, so that very high torques or torques are achieved.
  • suitable control in particular at the beginning of a pivoting movement of the armature from one operating point to another, a high torque is applied, which decreases as the approach to the other operating point progresses, whereby covering the torque requirement of an oscillating acceleration can be covered.
  • a rotary magnet offers fast reaction times and remains in the end position of an operating point without current supply. This reduces energy consumption and heat loss.
  • a rotary magnet achieves a larger exciter coil winding compared to the electric motor, and consequently a higher power input or electrodynamic force within the range of action of the coil, i. the working distance of the anchor, which meets the cold start requirement of various applications.
  • the number of coils, wirings, poles and other structural elements is lower, so that a compact, highly integrated design with few items and lower production costs is implemented.
  • an electromagnet of the rotary magnet can be excitable for mutual pivotal movement of the armature by an alternating current polarity.
  • the change of direction of the armature is implemented purely control technology.
  • the rotary magnet may further comprise a return spring for the armature, and the electromagnet for the pivotal movement of the armature against a restoring force of the return spring excitable.
  • a change in direction of the rotary magnet is implemented only by turning on and off the power supply.
  • the rotary magnet may comprise at least two electromagnets, wherein for mutually pivotal movement of the armature, the at least two electromagnets are alternately excitable.
  • the at least two electromagnets are alternately excitable.
  • the armature of the rotary magnet may comprise at least one permanent magnet. This is followed by a pivoting movement of the armature from one operating point to the other operating point, a repulsive and / or attractive force of the magnetic polarity between the permanent magnet and the electromagnet.
  • the armature of the rotary magnet can comprise a ferromagnetic armature body with pronounced armature poles, and the armature poles can be associated with pole shoes fixedly arranged in an operating point of the armature. In this case follows a pivotal movement of the armature from one operating point to the other operating point of the reluctance force to take the lowest air gap in the magnetic circuit of an electromagnet.
  • the armature of the rotary magnet can comprise an armature body with ferromagnetic armature poles, which have a higher magnetic permeability than other sections of the armature body, and the armature poles are assigned at a working point of the armature fixedly arranged pole pieces. In this case follows a pivotal movement of the armature from one operating point to the other operating point of the reluctance force for taking the lowest magnetic resistance through the anchor body in the magnetic circuit of an electromagnet.
  • the rotary magnet may comprise limiting means limiting a pivotal movement of the armature at the two operating points.
  • the operating points of the rotary magnet can be set even more precisely. Further, if desired application specific, a short-term holding torque against such a mechanical stop can be generated. In contrast, if desired application-specific, as well as a rebound of the armature can be generated on the mechanical stop, which occurs if necessary before a piston of a piston against a chamber wall in the P ump order subassembly.
  • the electromagnet and armature may be arranged such that an air gap between the armature poles and the pole shoes extends radially to the axis of the armature.
  • the electromagnet and armature may be arranged such that an air gap between the armature poles and the pole shoes extends axially to the axis of the armature.
  • a yoke of an electromagnet on which the pole pieces are formed, is formed as a pole ring, which is arranged concentrically around the armature or axially to the armature.
  • the electric pump drive may further comprise detecting means for detecting a position of the armature.
  • feedback is optionally provided for controlling a control or power supply of the electric pump drive for positive displacement pumps, which can be realized by a displacement sensor or more cost-effectively by means of contacts at the operating points for detecting at least two armature positions.
  • the electric pump drive may further comprise a control unit which controls an electric power supply to an electromagnet with respect to a timing and / or with respect to a current polarity of the supplied power.
  • control functions can be realized by means of a pulse width modulator and by means of a bipolar amplifier in the form of standardized electronic components, whereby the provision of cost-effective control of an electric pump drive for positive displacement pumps is possible. This is particularly true in comparison to the required power electronics for a brushless DC motor, which is conventionally used as a pump drive.
  • the electric pump drive with rotary magnet can drive a positive displacement pump with a pump assembly, which is designed as a rotary piston pump whose piston has two diametrically extending displacement sections, each of which is confined in a sector-shaped working chamber.
  • the kinematics of the oscillating piston movement correspond to those of the armature, i. the trajectories are exactly congruent to each other interpretable.
  • This allows a pump structure in which a mechanism between the electric pump drive and the pump assembly is eliminated and a compact integration is achieved by the pivot axis of the armature and the pivot axis of the piston are formed by a shaft.
  • a control method of the electric pump drive for a positive displacement pump in the form of the aforementioned rotary piston pump performing a switching on and off and / or reversing a current polarity of an electric power supply to the at least one electromagnet in dependence on a predefinable number of cycles of piston movements per Time unit.
  • the amplitude of the pivotal movement of the armature corresponds to the amplitude of the pivotal movement of the piston. Since it is a Positive displacement is, there is also a fixed ratio between a piston stroke and funded volume flow rate. Thus, a conclusion to a fixed volume flow can be made in a simple manner by a clock speed of the piston movement, or this ratio can be applied to the control specification of an exact volumetri see delivery capacity. As a result, a simpler control can be realized, for example, or a flow meter can be dispensed with compared to circulating displacement pumps.
  • control method may further comprise performing an increase in a voltage of the electric power supply to the at least one electromagnet until it is detected by a detection means that the pivotal movement of the armature reaches the operating points.
  • FIG. 1 shows a cross section through the exemplary rotary piston pump to explain the application of the electric pump drive according to the invention.
  • FIG. 2 shows a longitudinal section through an exemplary rotary piston pump with an embodiment of the inventive electric pump drive, as Twin arrangement of a rotary magnet, which comprises two axially adjacent electromagnets and two anchor body is executed;
  • Figure 3 is a perspective view of an anchor body of the embodiment of the electric pump drive according to the invention from a side associated with the piston.
  • FIG. 4 shows a perspective view of the other anchor body of the embodiment of the electric pump drive according to the invention from the opposite side to FIG. 3;
  • Fig. 5 is a detailed exploded view for explaining an alternative way of carrying out the electric pump drive according to the invention.
  • Fig. 6 is a schematic exploded view for explaining a further alternative possibility for carrying out the electric pump drive according to the invention.
  • FIG. 1 there will be described the construction of an exemplary rotary piston pump for use as an oil pump in a low-pressure lubricant system equipped with an embodiment of the electric pump drive according to the present invention.
  • This rotary piston pump is further subject matter and more fully described in a co-pending patent application of the same Applicant of the present application.
  • Fig. 1 of a pivot axis 12 from top left and bottom right two diametrically opposite overlapping e, sector-shaped working chambers 10 are shown extending in the pump housing 1 in a plane for pivotal movement of the rotary piston 2.
  • the flanks of the working chambers 10 form contact surfaces for the oscillating piston 2.
  • two areas of a pump outlet 14 are arranged between the working chambers 10, which are connected via an arcuate channel in the pump housing 1.
  • spangenförmige outlet valves 4 of the rotary piston pump are formed in the contact surfaces of the working chambers.
  • the pivoting piston 2 is fixed on the pivot axis 12, which is at the same time a drive shaft of the electric drive with a rotary magnet 3.
  • the rotary piston 2 comprises two displacement sections 20, which are mutually pivoted in the working chambers 10 over a rotation angle of approximately 90 °, as shown by the double arrow. Inside, the rotary piston 2 is excluded as a hollow body and opened to the viewer's side of the representation, resulting in a cavity 25 results.
  • the cavity 25 surrounds a receptacle of the pivot axis 12 and extends into the displacement sections 20.
  • intake valves 5 of the swivel piston pump are arranged in the flanks of the displacement sections 20, which are pivoted to the contact surfaces of the working chambers 10.
  • the inlet valves 5 allow a flow rate, which is sucked in via a central pump inlet 15, to pass through the cavity 25 into a working chamber 10 and block in the opposite direction from a pump chamber 10 to the cavity 25.
  • the pump housing 1 further comprises a directed towards the working chambers 10 flange portion in which an embodiment of the electric drive with a rotary magnet 3 is accommodated.
  • a further flange section closed by a cover is formed, in which a control circuit 39 of the electric drive 3 is accommodated.
  • Supply connections, which lead to electromagnets 30 of the rotary magnet 3, pass out of the pump housing 1 through a connection pointing upward.
  • the electric drive shown is designed as a twin arrangement of a rotary magnet 3, which comprises two axially adjacent electromagnets 30a, 30b and two anchor bodies 32a, 32b, and thus forms a so-called type of bistable rotary magnet 3.
  • the annular electromagnets 30a, 30b are axially separated from each other and are in contact with two likewise axially separate pole rings 31a, 31b which form a respective one-sided pole system with a conclusion via a common ferrite core 33 or yoke.
  • the pivot axis 12 is received, on which the armature 32 is pivotally mounted.
  • the armature 32 has two anchor bodies 32a, 32b, each having a diametrically longer, and offset by 90 ° to have a diametrically shorter extension in the radial direction.
  • the anchor bodies 32a, 32b have the contour of a circular area, in which two opposite, recessed inside Circular arc segments are excluded.
  • the anchor bodies 32a, 32b are jointly pivotally received in a respective central recess of a pole ring 31a, 31b.
  • the recesses of the pole rings 31 a, 31 b have two opposite radially inwardly distinct pole pieces 35.
  • the two anchor bodies 32a, 32b, ie in particular their anchor poles 34 are arranged offset by 90 ° to each other. Alternatively, however, also the pole shoes 35 of the two pole rings 31 a, 31 b may be formed offset by 90 ° to each other.
  • the principle of a rotary magnet 3 of this embodiment corresponds to the following procedural steps: energizing the first electromagnet 30a with the electric power supply so that the armature 32 is pivoted from the first operating point to the second operating point by a magnetic field of the first electromagnet 30a; and energizing the second electromagnet 30b with the electric power supply, so that the armature 32 by a magnetic field of the second Electromagnet 30 b is pivoted from the second operating point to the first operating point.
  • a rotary magnet 3 which includes only one electromagnet 30 and to a helical return spring 36
  • This design shown as an alternative variant of the rotary magnet 3 of the electric pump drive further comprises stop elements 37 as mechanical limiting means and ball bearings 38 for independent storage of the pivot axis 12 within the electric pump drive, a switch for the power supply as part of the control circuit 39 and other small parts such as a spacer sleeve, a circlip and the like.
  • the anchor poles 34 of the armature 32 are axially pronounced, and are corresponding, axially distinct pole shoes 35 associated with a ferrite core plate 33 as a yoke, which produces a conclusion of the magnetic circuit to the pole ring 31 via the pivot axis 12 and a spring cage, which generates from the electromagnet 30 becomes.
  • the principle of a rotary magnet 3 of this embodiment corresponds to the following procedural steps: energizing the electromagnet with the electric power supply, so that the armature 32 is pivoted by a magnetic field of the electromagnet 30 from the first operating point to the second operating point; and subjecting the energizing of the electromagnet 30 to the electrical power supply such that the armature 32 is pivoted by the restoring force of the biased return spring 36 from the second operating point to the first operating point.
  • This rotary magnet 3 comprises, similar to the first-mentioned embodiment, a two-pole excitation coil or two electromagnets 30a, 30b, which are arranged in the form of kidney-shaped windings on both sides of the pivot axis 12 and each comprise a ferrite core 33a, 33b or yoke.
  • a disc-shaped armature 32 is arranged on the pivot axis 32, which carries two semicircular permanent magnets 34m as anchor poles 34.
  • the permanent magnets 34m are magnetized in their longitudinal extent and applied in opposite directions on the armature 32.
  • the polarization limit is symmetrical over the poles of the electromagnets 30a, 30b.
  • the transmission range between the poles N / S contributes essentially to the transmission of power.
  • the mode of operation is similar to that of a permanently excited electric motor and follows the electrodynamics between the electric power supply and the resulting magnetic polarities.
  • the armature 32 experiences a deflecting torque, the direction of rotation being determined by the polarity of the electromagnets 30a, 30b.
  • the armature 32 By alternating excitation and suspension of each electromagnet 30a, 30b or by an alternating one Excitation with alternating polarity, the armature 32 between two operating points, which are preferably defined by mechanical limitations, pivoted back and forth.
  • such an embodiment of the electric pump drive according to the invention drives the swivel piston 2 in the previously described mode of operation of the swivel piston pump.
  • the principle of a rotary magnet 3 of this embodiment corresponds to the following procedural steps: energizing the electromagnet 30 or the electromagnets 30a, 30b with the electric power supply, so that the armature 32 by a magnetic field of the electromagnet 30a, 30b from the first operating point to the second Working point is pivoted; and energizing the electromagnet 30 or the electromagnets 30a, 30b with the reverse polarity electric power supply so that the armature 32 is pivoted by the reversed magnetic field of the electromagnet 30 or the electromagnets 30a, 30b from the second operating point to the first operating point.
  • the angle of rotation decreases due to a higher number of poles and the generated torque increases.
  • the pump drive according to the invention can be used with other pump assemblies of positive displacement pump types than the described rotary piston pump.
  • the pump drive according to the invention can also be used in positive displacement pumps, in which a linear reciprocal piston movement is carried out, for example, in a cylindrical pump chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Reciprocating Pumps (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un entraînement de pompe électrique pour pompes volumétriques comportant un piston à mouvement oscillant. Cet entraînement de pompe électrique est caractérisé en ce qu'il comporte un aimant rotatif (3) comprenant au moins un électroaimant (30; 30a, 30b) ainsi qu'une armature (32) pouvant pivoter autour d'un axe et pouvant être déplacée en alternance entre deux points de travail sous l'effet de l'excitation de l'électroaimant ou des électroaimants (30; 30a, 30b), cette armature (32) étant conçue pour être accouplée à un piston à mouvement oscillant.
EP18740813.3A 2017-09-28 2018-07-12 Entraînement de pompe électrique conçu pour une pompe volumétrique, pompe volumétrique et procédé correspondant Withdrawn EP3688865A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017122613.3A DE102017122613B3 (de) 2017-09-28 2017-09-28 Elektrischer Pumpenantrieb für eine Verdrängerpumpe, Verdrängerpumpe und Verfahren hierzu
PCT/EP2018/068981 WO2019063158A1 (fr) 2017-09-28 2018-07-12 Entraînement de pompe électrique conçu pour une pompe volumétrique, pompe volumétrique et procédé correspondant

Publications (1)

Publication Number Publication Date
EP3688865A1 true EP3688865A1 (fr) 2020-08-05

Family

ID=62916675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18740813.3A Withdrawn EP3688865A1 (fr) 2017-09-28 2018-07-12 Entraînement de pompe électrique conçu pour une pompe volumétrique, pompe volumétrique et procédé correspondant

Country Status (6)

Country Link
US (1) US20200251972A1 (fr)
EP (1) EP3688865A1 (fr)
CN (1) CN111164868A (fr)
BR (1) BR112020006042A2 (fr)
DE (1) DE102017122613B3 (fr)
WO (1) WO2019063158A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4887993B2 (ja) * 2006-02-15 2012-02-29 シンフォニアテクノロジー株式会社 アクチュエータ

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BR112020006042A2 (pt) 2020-10-06
WO2019063158A1 (fr) 2019-04-04
CN111164868A (zh) 2020-05-15
US20200251972A1 (en) 2020-08-06

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