WO2019048315A1 - Ensemble électrovanne - Google Patents

Ensemble électrovanne Download PDF

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Publication number
WO2019048315A1
WO2019048315A1 PCT/EP2018/073244 EP2018073244W WO2019048315A1 WO 2019048315 A1 WO2019048315 A1 WO 2019048315A1 EP 2018073244 W EP2018073244 W EP 2018073244W WO 2019048315 A1 WO2019048315 A1 WO 2019048315A1
Authority
WO
WIPO (PCT)
Prior art keywords
solenoid valve
valve device
magnetic
armature
magnet armature
Prior art date
Application number
PCT/EP2018/073244
Other languages
German (de)
English (en)
Inventor
René Schnetzler
Thomas Schiepp
Original Assignee
Eto Magnetic 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 Eto Magnetic Gmbh filed Critical Eto Magnetic Gmbh
Publication of WO2019048315A1 publication Critical patent/WO2019048315A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/003—Housing formed from a plurality of the same valve elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H01F2007/086—Structural details of the armature

Definitions

  • the invention relates to a solenoid valve device according to claim 1, and a method according to the preamble of claim 14.
  • the object of the invention is in particular to provide a generic device with improved properties in terms of a switching speed.
  • the object is achieved by the features of claims 1 and 14, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
  • Solenoid valve device with at least one magnetic coil with an open magnetic circuit, and at least one movably mounted armature, wherein a valve switching time is shorter than 3 ms, and in particular shorter than 2 ms, proposed.
  • a speed, in particular a switching speed of the solenoid valve device can be improved.
  • a switching frequency can thereby be increased, as a result of which, for example, a sorting process can be advantageously optimized.
  • a particularly fast opening and / or closing of a valve, in particular solenoid valve can be made possible, which, for example, sorting operations can be controlled more precisely. It is conceivable, for example, that with such a rapid alternating opening and closing, particularly small quantities of a medium and / or a particularly small number of grains of a bulk material, in particular individual grains of a bulk material, advantageously - -
  • Solenoid valve device are understood to have a total weight of less than 10 kg, preferably less than 1 kg, preferably less than 0.1 kg and more preferably less than 10 g.
  • a maximum extent of the small-sized solenoid valve device is at most 10 cm, preferably at most 5 cm, preferably at most 3 cm or particularly preferably at most 1 cm.
  • the open magnetic circuit is in particular designed as a self-contained magnetic flux which at least partially extends outside of a, in particular at least partially formed of a ferromagnetic material, solid and / or one, in particular at least partially ferromagnetic, liquid.
  • the open magnetic circuit is free of a closed, in particular a closed circuit forming and / or at least partially extending in an interior of a magnetic coil, ferromagnetic core.
  • the magnet armature is in particular at least partially formed from a ferromagnetic material.
  • the magnet armature interacts with a magnetic field and / or a magnetic flux in the surroundings, in particular with a magnetic field and / or a magnetic flux of the magnetic coil.
  • the magnet armature is provided for a change in a surrounding magnetic flux and / or magnetic field, in particular in a change in the magnetic flux of the magnetic coil to experience a force, in particular a reluctance force, whereby in particular a movement of the armature can be triggered.
  • the armature is intended to be moved by means of a Lorentz force and / or preferably a reluctance force in a magnetic field, preferably a magnetic field of the magnetic coil, wherein preferably the movement of the
  • Magnetic anchor an at least partial opening and / or at least partially closing a valve, in particular solenoid valve, the result.
  • the term "provided” should be understood to mean specially programmed, designed and / or equipped.Assuming that an object is intended for a specific function should in particular mean that the object fulfills this specific function in at least one application and / or operating state and / or performs.
  • the movable mounting of the magnet armature comprises in particular at least one spring, at least one rail and / or at least one
  • a valve switching time is to be understood in particular as a period of time which passes while the magnet armature moves between two end positions.
  • An end position may include, for example, a fully open position of a solenoid valve, a fully closed position of a solenoid valve and / or a predefined, at least semistable intermediate position of the solenoid valve.
  • a solenoid valve shifts from a fully closed state to a fully open state and / or from a fully closed state to a fully opened state in a valve switching time.
  • valve switching time comprises the time from activation of a
  • a short valve switching time can be achieved in particular by a low inductance of the magnetic coil and / or a low ohmic resistance of a winding material of the magnetic coil, in particular since thereby a time in which the magnetic field of the magnetic coil is built up can be kept short.
  • the solenoid valve device may in particular comprise at least one further magnetic coil, which is centered in particular around a further coil axis which coincides with a coil axis of the magnetic coil.
  • the open magnetic circuit has at least one large air gap, preferably a plurality , ,
  • At least one outer shape of at least one ferromagnetic component is adapted to the magnetic flux generated by the magnetic coil. This can advantageously a force-displacement characteristic of
  • Solenoid valve device can be optimized.
  • the slenoid valve device can be optimized.
  • the slenoid valve device can be optimized.
  • the slenoid valve device can be optimized.
  • Solenoid valve device an at least partially linear, preferably constant, force-displacement curve.
  • an inductance of the magnetic coil with the open magnetic circuit is less than 40%, in particular less than 30%, advantageously less than 20%, preferably less than 15% and particularly preferably less than 10% of an inductance of an at least substantially identical formed further magnetic coil with a closed magnetic circuit corresponds.
  • Switching speed of the solenoid valve device in particular in comparison with a magnetic coil with a closed magnetic circuit can be shortened.
  • substantially identical is intended in particular to mean the same number of windings, the same winding material, the same winding radius, the same winding height, the same winding width, the same winding cross-section and the same
  • Winding form to be understood.
  • the magnetic coil has a low impedance, in particular an ohmic resistance of less than 3 ⁇ , preferably less than 1 ⁇ , preferably less than 0.5 ⁇ and particularly preferably less than 0.2 ⁇ .
  • a time duration to a complete construction of a magnetic field of the magnetic coil can be kept low, whereby advantageously a speed, in particular a switching speed of the magnetic valve device, can be improved.
  • a high dynamics of the solenoid valve device can be achieved.
  • a low-resistance magnetic coil has a low number of turns, in particular with less than 250 windings, preferably with less than 150 , ,
  • Windings preferably with less than 100 windings and more preferably with less than 50 windings have.
  • the windings may advantageously be formed with a large diameter of the winding wire to a reduction of the ohmic resistance of the coil.
  • the at least one magnet armature and / or at least one, in particular stationary, counterpart of the magnet armature is at least partially designed as a permanent magnet.
  • the return deflection happens in particular independent of mechanical wear parts, which in particular a lifetime of
  • Solenoid valve device can be increased. In addition, it is possible that thereby a sealing effect of the solenoid valve device can be improved, in particular independent of mechanical wear parts.
  • at least partially formed should in particular at least 30%, preferably at least 50%, advantageously at least 70%, preferably at least 90% and especially 100% as
  • the permanent magnet understood to be understood.
  • the permanent magnet is
  • a neodymium-iron-boron magnet especially at least partially formed as a neodymium-iron-boron magnet, as a samarium-cobalt magnet, as an aluminum-nickel-cobalt magnet and / or as a strontium ferrite magnet.
  • the at least one magnet armature and / or at least the, in particular stationary, counterpart of the magnet armature at least partially made of a, in particular easily um- and / or demagnetisable material with a coercive force less than 200 kA / m, preferably less than 150 kA / m, preferably less than 100 kA / m and particularly preferably greater than 50 kA / m, is formed.
  • Solenoid valve device can be achieved.
  • a permanent retention in an open and / or closed switching state, in particular independently of a magnetic field of the magnetic coil, can advantageously be made possible in particular by alternating demagnetization and demagnetization.
  • the, in particular easily um- and / or demagnetizable, material can be magnetized by means of the magnetic field of the magnetic coil.
  • Solenoid valve device a demagnetization, for example, with an H-bridge, in particular to generate a short electrical pulse, which is intended to demagnetize the, in particular easily um- and / or demagnetisable material by means of the magnetic coil.
  • The, in particular easily um- and / or demagnetisable material is in particular at least partially formed as an aluminum-nickel-cobalt magnet.
  • the at least one magnet armature has a, in particular maximum, extent perpendicular to a movement axis of the at least one magnet armature which is smaller than 10 mm, in particular smaller than 7 mm, preferably smaller than 5 mm and particularly preferred smaller than 3 mm ,
  • a small-sized solenoid valve device can be made possible.
  • a compact design can be made possible.
  • the solenoid valve device has a reset unit for an automatic return deflection of the at least one magnet armature into a basic position of the magnet armature.
  • advantageously a complexity can be reduced, in particular in that the return deflection takes place automatically and free of control by the control unit and / or the magnetic coil.
  • advantageously a simple determination of the basic position can be made possible.
  • a force applied by the magnetic coil during a switching operation can be stored at least temporarily and used for a return deflection of the magnet armature.
  • the reset unit comprises in particular at least one restoring element, for example a magnetic spring, at least one electric servomotor, at least one compressed-air nozzle and / or preferably at least one spring.
  • a deflection of the magnet armature by the solenoid valve device against a spring force of the spring and / or the magnetic spring which advantageously a potential energy can be stored in the spring.
  • the stored in the spring and / or the magnetic spring potential energy leads in particular when switching off the magnetic coil to an automatic return deflection of the armature.
  • a compressed air nozzle can advantageously by means of compressed air, a pulse on at least , ,
  • the return deflection of the armature is at least partially gravitational.
  • an external load can be moved during a switching operation, which moves the magnet armature, in particular by means of a gravitational force, back into the basic position after stopping the magnetic field of the magnetic coil.
  • At least one return element for example a spiral spring, in particular the magnetic conductivity of the
  • Spiral spring advantageously serve to influence the magnetic flux generated during activation of the magnetic coil, whereby advantageously a magnetic field profile can be optimized.
  • the reset unit is formed integrally with the at least one magnet armature.
  • one piece should be understood in particular at least materially connected connected, for example, by a welding process, a gluing process, a Anspritzrea and / or another, the skilled person as meaningful
  • the magnet armature may be formed, for example, at least partially as a permanent magnet, which preferably at least partially forms the reset unit.
  • Permanent magnets such as NdFeB, in particular have a high energy density, which, in particular depending on the orientation of the permanent magnet, lead to a repulsion and / or attraction of adjacent ferromagnetic components of the magnetic circuit, in particular during energization of the magnetic coil.
  • the repulsion and / or attraction can advantageously lead to an automatic return deflection of the armature.
  • a component of the magnetic circuit which is different from the magnet armature for example the stationary counterpart of the magnet armature, which interacts attractively and / or repulsively with the magnet armature, in particular when the magnetic coil is activated, at least partially as one , ,
  • Permanent magnet is formed.
  • the attraction and / or repulsion of the permanent magnet contribute to a sealing effect of the solenoid valve device in a closed state at least and / or produce the sealing effect of the solenoid valve device in a closed state.
  • the permanent magnet may have an open base state of a "normally open” (NO) solenoid valve or a closed state of a "normally closed” (NC)
  • Solenoid valve cause and / or secure.
  • the restoring unit at least substantially surrounds at least a part of the at least one magnet armature. This advantageously allows a compact design, which advantageously a
  • Resetting unit comprise at least one coil spring, which in particular runs at least partially helically around the armature around.
  • the coil spring can be fixed to the armature such that a deflection of the magnet armature leads to a deformation of the coil spring, in particular by building up a potential energy, in particular a tension energy, in the spiral spring.
  • the reset unit preferably the spiral spring, in particular in addition to the magnet armature, at least substantially encompass at least one further ferromagnetic component of the magnetic circuit.
  • the solenoid valve device has a shielding unit for preventing mutual induction of adjacent magnetic coils.
  • a shielding of the magnetic field, in particular generated by the magnetic coil can advantageously be provided to the outside, whereby a mutual influence of adjacent coils can be advantageously prevented.
  • This can be advantageous in an arrangement of a plurality of solenoid valve devices side by side , ,
  • the shielding unit is in particular provided for the magnetic flux of the magnetic coil, in a through the
  • Shielding unit defined area to hold.
  • the shielding unit bundles the magnetic flux in an outer area around the magnetic coil, wherein preferably the open magnetic circuit is maintained.
  • the shielding unit comprises at least one shielding element, which is formed at least partially as at least one thin rod, as at least one thin grid, as at least one conductive foil and / or as at least one conductive layer.
  • the shielding unit is preferably designed as at least one sequence interrupted by insulating regions and / or planar arrangement of shielding elements.
  • the shielding unit may be produced by laminating at least a plurality of shielding elements.
  • a solenoid valve with at least one solenoid valve device is proposed.
  • a speed, in particular a switching speed of the solenoid valve device can be improved.
  • this can be a
  • Switching frequency can be increased, whereby, for example, a sorting process can be advantageously optimized.
  • a particularly rapid opening and / or closing of the solenoid valve can be advantageously made possible, whereby, for example, sorting operations can be controlled more precisely. It is conceivable, for example, that with such a rapid alternating opening and closing particularly small amounts of
  • the solenoid valve is designed as a "normally open” valve, as a “normally closed” valve, as a seat valve or as a needle valve.
  • valve system in particular for a sorting of seed, with a plurality of solenoid valves with a grid of at most 7 mm,
  • valve system in particular not more than 6 mm, preferably not more than 5 mm, advantageously not more than 3 mm, preferably not more than 2 mm or more preferably not more than 1 mm.
  • this can advantageously be a particularly small maximum
  • Grain size which is permeable by the solenoid valves of the solenoid valve system - -
  • a width of a single solenoid valve of the solenoid valve system preferably a distance between two adjacent valve openings of the
  • Solenoid valve system to be understood.
  • Solenoid valves in particular in a Seeds sorting plant, proposed to a sorting of seeds.
  • a rapid sorting in particular of seed, can advantageously be achieved.
  • seed can advantageously be sorted with particularly small seeds.
  • a small-sized solenoid valve device with at least one magnetic coil with an open magnetic circuit, as well as with at least one movably mounted armature, which is switched with a valve switching time of less than 3 ms, and in particular of less than 2 ms proposed.
  • Solenoid valve device can be improved.
  • this can be a
  • Switching frequency can be increased, whereby, for example, a sorting process can be advantageously optimized.
  • a particularly rapid opening and / or closing of the solenoid valve can be advantageously made possible, whereby, for example, sorting operations can be controlled more precisely. It is conceivable, for example, that with such a rapid alternating opening and closing particularly small amounts of
  • the magnetic valve device be overexcited at least during a partial period of the valve switching time at low voltages, in particular voltages below 48 V, preferably below 30 V and preferably below 20 V.
  • a magnetic field structure can be accelerated, which advantageously improves a switching speed of the solenoid valve device can.
  • a switching frequency can thereby be increased, as a result of which, for example, a sorting process can be advantageously optimized.
  • a particularly rapid opening and / or closing of the solenoid valve can be advantageously made possible, whereby, for example, sorting operations can be controlled more precisely.
  • over-excitation of a magnetic coil is to be understood in particular as meaning that a current is applied to the magnetic coil by the control unit, which current is above a continuous load limit of the magnetic coil, in particular by only maintaining the over-excitation for a short time
  • the sub-period is shorter than 1 s, preferably shorter than 0.1 s, advantageously shorter than 10 ms, particularly advantageously shorter than 5 ms, preferably shorter than 3 ms and particularly preferably shorter than 1 ms.
  • Solenoid valve device and / or the method according to the invention to fulfill a function described herein have a number differing from a number of individual elements, components and units mentioned herein.
  • FIG. 1 is a schematic sectional view of a solenoid valve device with a reset unit
  • Fig. 2 is a schematic sectional view of a solenoid valve with the
  • Solenoid valve device with an alternative reset unit a schematic sectional view of a further alternative solenoid valve device with a further alternative reset unit, a schematic sectional view of an additional further alternative solenoid valve device with an additional further alternative reset unit,
  • FIG. 1 shows a sectional view of a solenoid valve device.
  • Solenoid valve device is a small-sized solenoid valve device.
  • Solenoid valve device has a magnetic coil 10a.
  • the magnetic coil 10a is centered about a coil axis 86a.
  • the magnetic coil 10a is formed low impedance.
  • the solenoid valve device is formed substantially rotationally symmetrical to the coil axis 86a.
  • the magnetic coil 10a is powered by a control unit 94a.
  • the control unit 94a is provided to regulate and / or control the flow of current to the magnetic coil 10a.
  • a valve switching time 68a (see Fig. 4) of the magnetic field device is shorter than 3 ms.
  • the solenoid valve device has a magnet armature 14a.
  • the armature 14a is movably mounted.
  • the magnet armature 14a is intended to move along a movement axis 20a of the magnet armature 14a upon a change of a magnetic field of the magnetic coil 10a.
  • the movement axis 20a is parallel to the coil axis 86a.
  • the armature 14 is partially within the magnetic coil - -
  • the magnet armature 14a is centered about the coil axis 86a.
  • Magnetic armature 14a is formed of a ferromagnetic material.
  • Magnetic armature 14a has an extension 18a perpendicular to the movement axis 20a, which is smaller than 10 mm.
  • the extension 18a is formed as the maximum extent of the magnet armature 14a perpendicular to the movement axis 20a.
  • the magnet armature 14a has along the movement axis 20a a constant extension 18a perpendicular to the movement axis 20a.
  • the magnet armature 14a may have a deviating shape, in particular adapted to at least one magnetic flux, in particular an outer shape.
  • the solenoid valve device has a counterpart 38a.
  • the counterpart 38a is partially disposed within the magnetic coil 10a.
  • the counterpart 38a is centered about the spool axis 86a.
  • the counterpart 38a is stationary relative to the magnetic coil 10a.
  • the counterpart 38a is formed of a ferromagnetic material.
  • the solenoid valve device has an open magnetic circuit 12a. At most 30% of the magnetic circuit 12a run within ferromagnetic components.
  • Magnetic armature 14a partially forms the open magnetic circuit 12a.
  • the counterpart 38a partially forms the open magnetic circuit 12a.
  • Magnetic anchors 14a are intended to attract in a magnetic field at least the magnetic coil 10a.
  • the magnetic coil 10a with the open magnetic circuit 12a has an inductance which corresponds to less than 40% of an inductance of an at least substantially identically designed further magnetic coil with a closed magnetic circuit.
  • the solenoid valve device has a reset unit 22a.
  • the reset unit 22a serves to automatically return the magnet armature 14a to a basic position 26a of the magnet armature 14a. In the home position 26a, a gap 88a between armature 14a and counterpart 38a is maximum. The one shown in Figure 1
  • Solenoid valve device is in the home position 26a.
  • the reset unit 22a has a return element 24a.
  • the return element 24a is designed as a weight 16a.
  • the return element 24a uses a gravitational force of the earth for a return deflection.
  • the return element 24a is provided to move the armature 14a along the movement axis 20a.
  • the solenoid valve device is aligned so that the armature 14a in a direction of action 1 18a of the gravitational force - -
  • the reset unit 22a in particular the return element 24a, is formed integrally with the magnet armature 14a.
  • the solenoid valve device has a shielding unit 28a.
  • the shielding unit 28a serves to prevent mutual induction of adjacent magnetic coils.
  • the shielding unit 28a partially surrounds the magnetic coil 10a.
  • the shielding unit 28a has a plurality of shielding elements 36a.
  • the shielding elements 36a are electrically isolated from each other.
  • the shielding elements 36a are formed of an electrically conductive material.
  • the shielding unit 28a has a plurality
  • the laminations 40a are arranged between the shielding elements 36a.
  • the shielding unit 28a is rotationally symmetrical to the coil axis 86a.
  • the shielding unit 28a, in particular the shielding elements 36a partially form the open magnetic circuit 12a.
  • Figure 2 shows a schematic sectional view of a solenoid valve 30a.
  • Sectional view is reduced to a part of the solenoid valve 30a which lies to the right of a mirror axis 48a.
  • the solenoid valve 30a is formed as a seat valve 56a.
  • the solenoid valve 30a has a solenoid valve device.
  • Solenoid valve 30a has a valve opening 46a.
  • the valve opening 46a has an opening direction 90a.
  • the opening direction 90a indicates directions along which material the solenoid valve 30a can pass.
  • the solenoid valve 30a has
  • the closure part 44a is provided in a
  • the solenoid valve 30a provides a stop for at least one movably mounted part of the solenoid valve device, in particular the armature 14a.
  • the armature 14a has a block 60a.
  • the block 60a is intended to block a valve opening 46a when closed.
  • the block 60a abuts against the closure part 44a in the closed state.
  • the block 60a is integrally formed with the return element 24a in the embodiment shown in FIG.
  • FIG. 3 shows a schematic representation of a seed sorting plant 120a.
  • Seed sorting plant 120a has a solenoid valve system 32a.
  • Solenoid valve system 32a has a plurality of solenoid valves 30a.
  • Solenoid valves 30a of the solenoid valve system 32a are arranged regularly relative to one another. Each solenoid valve 30a of the solenoid valve system 32a has a valve port 46a. The valve openings 46a are arranged uniformly in mutually parallel opening directions 90a of the valve openings 46a.
  • the solenoid valve system 32a has a pitch 34a. The pitch 34a is 7 mm.
  • the solenoid valve system 32a is for use in the seed sorting plant 120a.
  • the solenoid valve system 32a is intended for use in sorting seeds.
  • Solenoid valve device Process steps are qualitatively plotted along a time axis 66a.
  • a switching process is initiated for switching the solenoid valve device.
  • the magnetic coil 10a is over-excited during a switching operation of the solenoid valve device. The overexcitation occurs during a subperiod 70a of the
  • Valve switching time 68a Overexcitation occurs at low voltages below 48V. The overexcitation leads to an accelerated build-up of a magnetic field.
  • the magnetic coil 10a is replaced by the
  • Power supply unit 94a which is below a continuous load limit of the magnetic coil 10a. By supplying electricity below the
  • the overexcitation from method step 72a and a first part of the subsequent power supply of method step 92a form a movement period 80a.
  • the armature 14a moves.
  • the armature 14a reaches a maximum deflection position.
  • the maximum deflection position corresponds in particular to a position in which the magnet armature 14a and the counterpart 38a touch.
  • the movement period 80a corresponds to the valve switching time 68a. In at least one, in particular several
  • Method steps 72a, 74a, 92a at least partially comprehensive, further
  • step 98a the armature 14a is switched with a valve switching time 68a of less than 3 ms. After the maximum deflection position has been reached, the magnet armature 14a remains stationary, in particular in the case of continuous energization by the control unit 94a. The magnet armature 14a remains during one,
  • Disabled power supply by means of the control unit 94a.
  • the magnetic field of the magnetic coil 10a degrades following the process step 76a, thereby reducing a force holding the armature 14a in a maximum deflection position.
  • the magnet armature 14a is deflected back by means of the reset unit 22a. In a return deflection of the armature 14a is moved from a deflection position in the basic position 26a.
  • Reverse deflection occurs during a, in particular on the holding period 82a directly following, stuntungzeitraum 84a. Following the return deflection, the magnet armature 14a is in the basic position 26a.
  • FIGS. 5a to 8 show further exemplary embodiments of the invention.
  • the following descriptions and the drawings are essentially limited to the differences between the embodiments, with respect to the same components, in particular with respect to components with the same reference numerals, in principle also to the drawings and / or the description of the other
  • FIG. 5a shows a solenoid valve device which has a magnetic coil 10b, a magnet armature 14b and a counterpart 38b.
  • the armature 14b has a shoulder 42b.
  • the counterpart 38b has a shoulder 42b.
  • the alternative solenoid valve device has a reset unit 22b.
  • Reset unit 22b surrounds a part of the magnet armature 14b.
  • the reset unit 22b surrounds a part of the counterpart 38b.
  • the reset unit 22b engages around a gap 88b arranged between the counterpart 38b and the magnet armature 14b.
  • Reset unit 22b has a return element 24b.
  • the return element 24b is formed as a coil spring 96b.
  • the shoulder 42b of the magnet armature 14b and / or the shoulder 42b of the counterpart 38b are intended to form a contact surface for the restoring element 24b.
  • the biasing force of the return element 24b counteracts a reluctance force generated by a magnetic field of the magnetic coil 10b. Upon disappearance of the reluctance force, the biasing force of the return element 24b causes a
  • FIG. 5b shows a solenoid valve device which has a magnetic coil 10c, a magnetic armature 14c, a counterpart 38c and a reset unit 22c with a return element 24c.
  • the armature 14c is formed as a permanent magnet 16c.
  • the return element 24c is formed as a permanent magnet 16c.
  • the reset unit 22c and the magnet armature 14c are integrally formed.
  • Reset unit 22c and the armature 14c are integrally formed.
  • Permanent magnet 16c has a polarization axis 100c.
  • the polarization axis 100c is aligned parallel to a coil axis 86c of the magnetic coil 10c.
  • the permanent magnet 16c interacts attractively and / or repulsively with the counterpart 38c.
  • the interaction of the permanent magnet 16c with the counterpart 38c is dependent on a magnetic field generated by the magnetic coil 10c.
  • FIG. 5c shows a solenoid valve device which has a magnetic coil 10d, a magnet armature 14d, a counterpart 38d and a reset unit 22d with a return element 24d.
  • the counterpart 38d is formed of a hard magnetic material.
  • the counterpart 38d has a high coercive force.
  • the counterpart 38d is formed at least partially from a samarium-cobalt mixture and / or from a neodymium-iron-boron mixture.
  • the counterpart 38d is designed as a hard magnetizable permanent magnet.
  • the armature 14d is formed as a permanent magnet 16d.
  • the return element 24d is as a
  • Permanent magnet 16d formed.
  • the reset unit 22d and the armature 14d are integrally formed.
  • the reset unit 22d and the armature 14d are integrally formed.
  • the permanent magnet 16d has a polarization axis 100d.
  • the polarization axis 100d is aligned parallel to a coil axis 86d of the magnetic coil 10d.
  • the permanent magnet 16d interactively attracts and / or repels the counterpart 38d.
  • the armature 14 d is made of a material with - -
  • the magnet armature 14d is formed from a material that can be easily wound, re-magnetized and / or demagnetized.
  • Magnetic armature 14d is generated by means of a magnetic coil 10d
  • the solenoid valve device has a control unit 94d.
  • the control unit 94d includes a demagnetization module 102d.
  • the demagnetization module 102d includes an H-bridge 104d.
  • Degaussing module 102d is intended to demagnetize the permanent magnet 16d by means of a counter-pulse.
  • Solenoid valve device a permanent opening and / or closing and / or a permanent holding a lifting position of the armature 14 d are made possible, in particular without the magnetic coil 10 d to energize permanently. This can advantageously be improved efficiency.
  • a sectional view of a solenoid valve device shown in FIG. 6 is reduced to a part of the solenoid valve device which lies to the right of a mirror axis 48e.
  • the solenoid valve device has a magnet armature 14e, a counterpart 38e and a magnetic coil 10e.
  • An outer shape 106e of the counterpart 38e is adapted to direct a magnetic flux generated by the magnetic coil 10e.
  • An outer shape 50e of the armature 14e is adapted to guide a magnetic flux generated by the magnetic coil 10e.
  • the counterpart 38e has an overlap 54e.
  • the overlap 54e conceals in a basic position 26e of the magnet armature 14e a gap 88e lying between the magnet armature 14e and the counterpart 38e in the direction of the magnetic coil 10e.
  • the magnet armature 14e has a recess 52e.
  • the recess 52e is provided in a
  • a sectional view of a solenoid valve 30f shown in FIG. 7 is reduced to a part of the solenoid valve 30f which lies to the right of a mirror axis 48f.
  • Solenoid valve 30f is formed as a needle valve 58f.
  • the solenoid valve 30f has a - -
  • Magnetic anchor 14f a counterpart 38f and a magnetic coil 10f.
  • Magnetic armature 14f has a needle 62f.
  • the needle 62 f is integral with the
  • the needle 62f has a tip 108f.
  • the tip 108f is oriented in a direction away from the counterpart 38f in parallel with a coil axis 86f of the magnetic coil 10f.
  • the needle 62f is provided to close a valve port 46f of the solenoid valve 30f.
  • the needle 62f is in a closed state of the solenoid valve 30f to a closure part 44f of
  • Solenoid valve 30g is formed as a needle valve 58g.
  • the solenoid valve 30g is formed as an NO valve 64g.
  • the solenoid valve 30g has a magnet armature 14g, a counterpart 38g, and a magnetic coil 10g.
  • the armature 14g has a needle 62g.
  • the needle 62g is formed integrally with the armature 14g.
  • the needle 62g has a tip 108g.
  • the needle 62g extends into a cavity 1 10g of the counterpart 38g.
  • the needle 62g pierces the cavity 1 10g.
  • the needle 62g emerges from the cavity 1 10g on a side of the counterpart 38g facing a closure part 44g of the magnet valve 30g.
  • In a basic position 26g of the solenoid valve 30g is formed as an NO valve 64g.
  • the solenoid valve 30g has a magnet armature 14g, a counterpart 38g, and a magnetic coil 10g.
  • Magnetic anchor 14g exists in a direction parallel to a coil axis 86g of the magnetic coil 10g a distance 1 12g between the tip 108g and the
  • the distance 12g in the basic position 26g is at least equal to a width 14g of the valve opening 46g in a direction parallel to the coil axis 86g.
  • the needle 62g In a maximum deflection position of the armature 14g, the needle 62g abuts against the closure member 44g. An abutment of the needle 62g on the closure member 44g completely blocks the valve opening 46g.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne un ensemble électrovanne, en particulier un ensemble électrovanne de petite taille, comprenant au moins une bobine magnétique (10 a-g) pourvue d'un circuit magnétique ouvert (12a-g), ainsi qu'au moins une armature magnétique (14a-g) montée mobile, un temps de commutation de vanne (68a-g) étant inférieur à 3 ms et en particulier inférieur à 2 ms.
PCT/EP2018/073244 2017-09-08 2018-08-29 Ensemble électrovanne WO2019048315A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017120805.4A DE102017120805A1 (de) 2017-09-08 2017-09-08 Magnetventilvorrichtung
DE102017120805.4 2017-09-08

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WO2019048315A1 true WO2019048315A1 (fr) 2019-03-14

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PCT/EP2018/073244 WO2019048315A1 (fr) 2017-09-08 2018-08-29 Ensemble électrovanne

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DE (1) DE102017120805A1 (fr)
WO (1) WO2019048315A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619779A1 (de) * 1985-06-15 1986-12-18 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Elektromagnetischer antrieb
DE3905992A1 (de) * 1989-02-25 1989-09-21 Mesenich Gerhard Elektromagnetisches hochdruckeinspritzventil
DE3934287A1 (de) * 1989-10-13 1991-04-18 Eckehart Schulze Magnetventil
DE10139176A1 (de) * 2001-08-16 2003-02-27 Gerd Hoermansdoerfer Elektromagnetische Stelleinrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8028469B2 (en) * 2006-03-02 2011-10-04 Monsanto Technology Llc Automated high-throughput seed sampler and methods of sampling, testing and bulking seeds

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619779A1 (de) * 1985-06-15 1986-12-18 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Elektromagnetischer antrieb
DE3905992A1 (de) * 1989-02-25 1989-09-21 Mesenich Gerhard Elektromagnetisches hochdruckeinspritzventil
DE3934287A1 (de) * 1989-10-13 1991-04-18 Eckehart Schulze Magnetventil
DE10139176A1 (de) * 2001-08-16 2003-02-27 Gerd Hoermansdoerfer Elektromagnetische Stelleinrichtung

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