US20190195382A1 - Valve with electrodynamic actuator - Google Patents

Valve with electrodynamic actuator Download PDF

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Publication number
US20190195382A1
US20190195382A1 US16/223,469 US201816223469A US2019195382A1 US 20190195382 A1 US20190195382 A1 US 20190195382A1 US 201816223469 A US201816223469 A US 201816223469A US 2019195382 A1 US2019195382 A1 US 2019195382A1
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US
United States
Prior art keywords
drive element
valve
valve according
coil
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/223,469
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English (en)
Inventor
Ralf Scheibe
Sebastian Hettinger
Christina Ripsam
Holger Schwab
Simone Knauss
Johannes Baumann
Christian Hartmann
Rainer Kuenzler
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.)
Buerkert Werke GmbH and Co KG
Original Assignee
Buerkert Werke GmbH and Co KG
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 Buerkert Werke GmbH and Co KG filed Critical Buerkert Werke GmbH and Co KG
Assigned to BUERKERT WERKE GMBH & CO. KG reassignment BUERKERT WERKE GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HARTMANN, CHRISTIAN, KNAUSS, SIMONE, RIPSAM, CHRISTINA, BAUMANN, JOHANNES, KUENZLER, RAINER, SCHEIBE, RALF, SCHWAB, HOLGER, Hettinger, Sebastian
Publication of US20190195382A1 publication Critical patent/US20190195382A1/en
Priority to US17/021,155 priority Critical patent/US11326710B2/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
    • 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
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—Lift valves
    • F16K31/0627—Lift valves with movable valve member positioned between seats
    • 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
    • F16K31/0668—Sliding 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
    • 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
    • F16K31/0682—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with an articulated or pivot armature
    • 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
    • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
    • F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/598—With repair, tapping, assembly, or disassembly means
    • Y10T137/5987—Solenoid or electromagnetically operated valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87885—Sectional block structure

Definitions

  • the invention relates to a valve with an electrodynamic actuator.
  • Valves with electromagnetic actuators are frequently used in fluid technology.
  • an armature made of magnetic material is moved via a magnetic field generated by a coil.
  • electrodynamic drives depends on the volume of the permanent magnets used in the drive, whereby a reduction in the volume of the permanent magnets has a comparatively smaller effect on the magnetic field strength available in the drive than a reduction in the coil size of an electromagnetic actuator.
  • An electrodynamic actuator for example, is known from DE 10 2013 110 029 B4.
  • Valves are known wherein valve seats are sealed by a diaphragm, which is pressed onto the respective valve seat by an actuator.
  • a diaphragm limits the maximum working pressure.
  • a valve with an electrodynamic actuator that has a magnet device to generate a magnetic field and a drive element that is movable relative to the magnet device.
  • the drive element is pivotally mounted and comprises a current-carrying air coil that is arranged in the magnetic field and that is fixedly coupled to a coil carrier of a non-magnetic material. Sealing surfaces of sealing valve seats are arranged on two opposite sides of the drive element.
  • the drive element is elongated, and wherein a direction of longitudinal expansion of the drive element extends substantially along a longitudinal expansion of the coil.
  • Opposite sides refer to two sides facing in opposite directions. This means that the sealing surfaces face in opposite directions.
  • the sides can be parallel to each other or inclined to each other.
  • the invention is based on the basic idea that the Lorentz force can be used as the driving force for an actuator if the actuator's drive element has a coil arranged in a magnetic field that is supplied with current to deflect the drive element.
  • This concept is implemented particularly effectively in this invention by using an air coil as the coil, which is firmly coupled to a non-magnetic coil carrier.
  • An air coil is known to be a wire wound around a non-soft magnetic material (usually air) without a soft magnetic core.
  • the non-magnetic coil carrier should not be magnetizable and may, for example, be made of plastic.
  • valve seats are sealed directly by the sealing surfaces arranged on opposite sides of the drive element, there is no need for a diaphragm.
  • the drive element is encased in an elastomer part. This can dampen impact noises so that the valve is particularly quiet in operation and switching noises are avoided as far as possible.
  • the valve is particularly quiet, as the Lorentz principle does not allow metal to metal, which is the case with conventional solenoid valves.
  • the elastomer part can comprise two sealing sections arranged on the sealing surfaces of the drive element. This has the advantage that the valve seats can be sealed particularly reliably. Unevenness and manufacturing tolerances on a valve seat or on the sealing surfaces of the drive element can be compensated by the sealing sections.
  • the elastomer part preferably has a pear-shaped section and a tongue-shaped section, the tongue-shaped section projecting into the pear-shaped section and encasing the drive element.
  • the pear-shaped section of the elastomer part can be used to seal housing parts that can be joined together to form a valve housing. Because the tongue-shaped section encases the drive element, the elastomer part is reliably attached to the drive element and cannot be unintentionally detached from it even if the drive element moves.
  • the elastomer part has a mounting aid.
  • the mounting aid for example, is molded onto the elastomer part, in particular in the form of a bead on the pear-shaped section of the elastomer part.
  • the mounting aid can, for example, be clamped between two housing parts during assembly so that the pear-shaped section is fixed in a fixed position.
  • the mounting aid can be used to correctly position the elastomer part by aligning the mounting aid to a corresponding geometry on a housing part.
  • valve has two valve seats preferably facing each other, in particular because the valve seats do not lie in the same plane, good sealing of the valve seats is possible.
  • the opposite valve seats can each be sealed with one of the sealing surfaces arranged on opposite sides of the drive element.
  • the drive element can be pressed onto the valve seats with a relatively high pressure.
  • the drive element may have a toothing, the coil carrier being firmly connected to the drive element via the toothing.
  • the drive element can be clawed into the coil carrier by the toothing, so that the drive element and the coil carrier cannot be detached from each other without destruction anymore.
  • the coil carrier and the drive element can thus be advantageously connected to each other without further connectors.
  • the toothing can be formed integrally in the drive element.
  • the valve preferably has a housing, formed at least partly from plastic and partly from a metallic encasement.
  • the housing comprises several plastic parts that can be produced by injection molding. Fasteners or fluid channels can be formed particularly easily in the plastic parts.
  • the metallic encasement serves to shield the valve and also serves as a magnetic guide plate.
  • the metallic encasement is made of a magnetically conductive steel, for example.
  • the metallic encasement improves heat dissipation.
  • the housing comprises at least two plastic parts that engage with each other, with the metallic encasement being put over the two plastic parts to hold the plastic parts together.
  • the metallic encasement surrounds the at least two plastic parts in such a way that they cannot separate from each other. This eliminates the need for fasteners to connect the housing parts.
  • the housing parts can thus be manufactured particularly easily, since, for example, no or fewer latching elements or similar connecting elements are required.
  • reinforcing plates made of a soft magnetic material are provided.
  • the reinforcing plates may be arranged inside the housing between the metallic encasement and a permanent magnet, respectively.
  • the drive element is preferably mounted pivotably about an axis of rotation parallel to the main directions of the magnetic fields.
  • the Lorentz force is optimally used as the driving force for a pivoting movement.
  • Such a design is particularly suitable for the alternating opening and closing of two oppositely arranged valve seats.
  • a first half of the air coil is arranged in a first magnetic field with a first main direction and a second half of the air coil is arranged in a second magnetic field with a second main direction opposite to the first main direction.
  • the different polarity (north/south pole) of adjacent permanent magnets can be effectively used to utilize a large portion of the winding sections to generate the driving force. Since most of the current in the winding halves of the air coil flows in opposite directions, a Lorentz force is generated in both cases which acts in the same direction, resulting in a large total driving force.
  • an air coil which generally has the shape of an oval with a longitudinal axis, preferably the shape of two complementary semicircles spaced apart with a linear center piece connecting the semicircles, the longitudinal axis dividing the air coil into the two halves through which oppositely oriented magnetic fields pass.
  • An oval shape of the air coil has the advantage that larger winding sections can be achieved than with a circular coil which contribute to force generation. This means that more force is available in the direction of movement of the drive element. In principle, however, circular or angular coils can also be used.
  • a reset element which exerts a bias force on the drive element and forms at least part of an electrically conductive connection between a winding end of the air coil and an electrical connection of the actuator.
  • the reset element thus fulfils a dual function by pretensioning the drive element to a certain switching position or operating position on the one hand and on the other hand making an otherwise required wire connection or the like superfluous.
  • contact can also be made via a wire connection.
  • care must be taken to ensure that the flexibility of the wire ends is guaranteed, as they move along during the switching process.
  • the wire ends can, for example, be coated with PTFE.
  • a leaf spring or a coil spring is suitable as a reset element.
  • Several spring elements can also form a reset element together.
  • the magnet device and the drive element of the electrodynamic actuator can be accommodated in an actuator housing that shields the magnetic fields of the magnet device. This avoids interference with adjacent electrical and/or magnetic equipment.
  • the electrodynamic actuator is equipped with reinforcing plates, especially yoke plates, made of a soft magnetic material, which fulfil a double function: On the one hand they amplify the magnetic fields of the magnet device, and on the other hand they shield the magnetic fields from the outside.
  • yoke plates allow an actuator housing made of plastic to be provided if a stronger shielding is not necessary.
  • the reinforcing plates in particular yoke plates, made of soft magnetic material with magnetic field amplification and shielding properties form the housing of the actuator.
  • the reinforcing plates are arranged inside the housing, for example, between the metallic sheathing and a permanent magnet.
  • FIG. 1 shows a valve according to the invention
  • FIG. 2 shows a view of the inventive valve from below
  • FIG. 3 shows an exploded view of the valve according to the invention
  • FIG. 4 shows a longitudinal section through the valve along the line A-A in FIG. 1 ,
  • FIG. 5 shows another longitudinal section through the valve along the line B-B in FIG. 1 ,
  • FIGS. 6 a to 6 c show different views of a drive element
  • FIGS. 7 a and 7 b show different sections of a drive element
  • FIG. 8 shows a section through a valve body
  • FIG. 9 shows a casing of the valve housing.
  • FIG. 1 shows a valve 10 , which has a housing 12 .
  • the housing 12 consists of several plastic housing parts 14 , 16 , 18 and a metallic encasement 20 .
  • the metallic encasement 20 comprises two sheathing parts 22 , 24 which are inserted into each other and which are at least partially inserted over the plastic housing parts 14 , 16 .
  • a further plastic housing part 18 forms a cover which closes the housing 12 .
  • all housing parts 14 , 16 , 18 , 20 form a uniform surface.
  • the sheathing parts 22 , 24 of the metallic encasement 20 preferably consist of a magnetically conductive steel. They each have flaps 26 widening in a direction away from their own sheathing part 22 , 24 , which engage in corresponding recesses 28 of the respective other sheathing part 22 , 24 in order to fasten the sheathing parts 22 , 24 together.
  • the encasement 20 serves as a shield against magnetic fields. This avoids interference with adjacent electrical and/or magnetic equipment.
  • the actuator 30 is visible in FIGS. 3 to 5 .
  • the encasement 20 serves as a magnetic guide plate, which can conduct magnetic fields in a desired direction.
  • the encasement 20 serves to dissipate heat.
  • the encasement 20 is designed to save material and mainly has a fastening function.
  • extensions 32 , 34 of the encasement 20 extend into a lower portion of the housing 12 .
  • the surface area of the encasement 20 is increased so that heat exchange between the encasement 20 and the environment is improved.
  • FIG. 2 shows the valve 10 in a view from below.
  • a fluid plate 36 is moulded to the plastic housing parts 14 , 16 .
  • Fluid channels 38 , 40 , 42 are formed in the fluid plate 36 .
  • fluid lines can be connected to the fluid channels 38 , 40 , 42 .
  • the fluid plate 36 also has stiffening ribs and through-holes for fixing the fluid plate 36 .
  • FIG. 3 shows an exploded view of the inventive valve 10 from FIGS. 1 and 2 .
  • the housing parts 14 , 16 have mounting areas 44 , 46 with which the housing parts 14 , 16 engage in the metallic encasement 20 , in particular in the extensions 32 , 34 of the encasement 20 .
  • the housing parts 14 , 16 are connected to the encasement 20 by clamping.
  • elevations 48 for example in the form of webs, are provided in the mounting areas 44 , 46 . The height of the elevations 48 is selected such that a sufficient clamping force is achieved between the housing parts 14 , 16 and the encasement 20 , such that a secure hold of the encasement 20 on the housing parts 14 , 16 is ensured.
  • Indentations 50 are located directly adjacent to the elevations 48 . In the indentations 50 , any material abrasion that may occur when the encasement 20 is placed on the plastic housing parts 14 , 16 may accumulate.
  • the electrodynamic actuator 30 is arranged in the housing 12 .
  • the actuator 30 comprises a coil carrier 52 made of a non-magnetic material with an air coil 54 visible in FIGS. 4 and 5 , and a drive element 56 fixed to the coil carrier 52 .
  • the actuator 30 comprises two return springs 58 and two contacts 60 , each connecting the coil ends to a positive and a negative pole.
  • the air coil 54 is firmly connected to the coil carrier 52 , i.e. the coil carrier 52 and the air coil 54 always move together.
  • the air coil 54 comprises a plurality of windings around a non-soft magnetic core (air or other non-magnetic material).
  • the windings give the air coil 54 an essentially oval shape with a longitudinal axis perpendicular to the centre axis of the air coil 54 .
  • the air coil 54 has the shape of two spaced complementary semicircles with a straight center piece connecting the semicircles.
  • FIG. 5 shows the complete actuator 30 .
  • the air coil 54 can be energized electrically via the springs 58 .
  • a contact lug 66 is arranged at each end of the coil wire.
  • a coil wire end can be placed on a contact lug 66 for fastening, and the contact lug 66 can then be closed and welded.
  • the contact lugs 66 are electrically conductive and are preferably made of a metallic material.
  • Each spring 58 is placed on one end of a contact lug 66 .
  • the coil carrier 52 in particular the drive element 56 , can be loaded by the springs 58 into a position in which a valve seat is sealed when the valve 10 is de-energized.
  • the coil carrier 52 is pivoted via a bolt 68 in the housing parts 14 , 16 .
  • the housing parts 14 , 16 have complementary extensions or grooves, which interlock when the housing parts 14 , 16 are assembled.
  • the bolt 68 is enclosed between the housing parts 14 , 16 and rotatably mounted.
  • Two pins 70 each inserted in coaxially arranged holes in the housing parts 14 , 16 , secure the connection of the two housing parts 14 , 16 to each other.
  • FIG. 4 shows a longitudinal view along the line A-A in FIG. 1 .
  • a valve seat 72 , 74 is arranged in each case at the ends of the fluid channels 38 , 40 lying in the interior of the valve 10 , in particular in the interior of the housing parts 14 , 16 , with the valve seats 72 , 74 facing each other.
  • the course of the fluid channels 38 , 40 , 42 corresponds at least approximately to the course of a circular path, especially in the area of a deflection. This results in a particularly good flow rate.
  • a rectangular deflection would be easier to make. However, a rectangular deflection would have a negative effect on the flow rate.
  • valve seats 72 , 74 can each be closed by sealing surfaces 76 , 78 arranged on opposite sides of the drive element 56 when the air coil 54 is energized.
  • the drive element 56 is elongated, with a direction of the longitudinal extent of the drive element 56 extending substantially along the coil longitudinal extent.
  • the drive element 56 preferably has a metallic core 80 .
  • the metallic core 80 of the drive element 56 is at least partially covered by an elastomer part 82 .
  • the elastomer part 82 is composed of a pear-shaped section 84 and a tongue-shaped section 86 . This is particularly well seen in FIG. 5 or 7 a . Instead of a pear shape, other geometries are also conceivable.
  • the elastomer part 82 can also consist of an O-shaped section and a tongue-shaped section.
  • the sealing surfaces 76 , 78 of the drive element 56 are covered by the elastomer part 82 , in particular by the tongue-shaped section 86 .
  • the elastomer part 82 comprises two sealing sections 96 , 98 arranged on the sealing surfaces 76 , 78 of the drive element 56 .
  • the sealing sections 96 , 98 can be thickenings of the elastomer part 82 in the tongue-shaped section 86 , in particular the sealing sections 96 , 98 are formed integrally with the elastomer part 82 .
  • the pear-shaped section 84 of the elastomer part 82 is used to seal the housing parts 14 , 16 .
  • the elastomer part 82 in particular the pear-shaped section 84 of the elastomer part 82 , is clamped between the housing parts 14 , 16 .
  • the pear-shaped section 84 forms a closed contour surrounding the drive element 56 , in particular the sealing surfaces 76 , 78 of the drive element 56 .
  • the pear-shaped section 84 is arranged concentrically around the sealing surfaces 76 , 78 at least in some areas, as shown in FIG. 5 , for example.
  • a mounting aid 88 is provided which is moulded onto the elastomer part 82 , in particular in the form of a bead. This ensures reliable sealing of the two housing parts 14 , 16 .
  • FIG. 5 shows a longitudinal view along the line B-B in FIG. 1 .
  • the drive element 56 is mounted in the coil carrier 52 via two webs 90 .
  • several teeth 92 are formed on the webs 90 , such that the drive element 56 can be clawed into the coil carrier 52 .
  • the drive element 56 is made of metal and the coil carrier 52 of plastic. This allows the teeth 92 to penetrate at least a little into the material of the coil carrier 52 . Teeth 92 can be pointed or rounded.
  • the coil carrier 52 is mounted in the housing 12 such that it can be pivoted about an axis of rotation 95 via the bolts 68 .
  • the coil carrier 52 can be pivoted to seal the valve seats 72 , 74 if the air coil 54 is supplied with the appropriate current.
  • the axis of rotation 95 is advantageously below the extension of the elastomer part 82 on the drive element 56 . This means that this extension is not moved when the coil carrier 52 pivots, because the pear-shaped section 84 should always be rigid between the housing parts 14 , 16 in order to ensure optimum sealing.
  • FIGS. 6 a to 6 c show the drive element 56 together with the elastomer part 82 in different views.
  • FIGS. 7 a and 7 b each show a section through the drive element 56 with the elastomer part 82 .
  • the elastomer part 82 is geometrically optimized below the base of the tongue-shaped section 86 at the pear-shaped section 84 , i.e. at the point of movement, in order to avoid cracking.
  • an indentation 96 is foreseen in this area.
  • the contour of the indentation 96 can be elliptical.
  • the elastomer part 82 is widened in the area of the sealing surfaces 76 , 78 . This allows a fluid to flow freely through a fluid channel 38 , 40 when the corresponding valve seat 72 , 74 is open.
  • FIG. 8 shows a sectional view of the connection of the two housing parts 14 , 16 via the pins 70 .
  • FIG. 9 shows the arrangement of the permanent magnets 62 and the reinforcing plate 64 on the encasement 20 .
  • the valve 10 preferably has several permanent magnets 62 . Their magnetic fields can be used most effectively if the permanent magnets 62 are arranged in such a way that their longitudinal axes run parallel to the longitudinal axis of the air coil 54 .
  • the permanent magnets 62 should be arranged in such a way that opposing permanent magnets 62 always face opposite poles.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)
US16/223,469 2017-12-22 2018-12-18 Valve with electrodynamic actuator Abandoned US20190195382A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/021,155 US11326710B2 (en) 2017-12-22 2020-09-15 Valve with electrodynamic actuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017131246.3 2017-12-22
DE102017131246.3A DE102017131246A1 (de) 2017-12-22 2017-12-22 Ventil mit elektrodynamischen Aktor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/021,155 Division US11326710B2 (en) 2017-12-22 2020-09-15 Valve with electrodynamic actuator

Publications (1)

Publication Number Publication Date
US20190195382A1 true US20190195382A1 (en) 2019-06-27

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US16/223,469 Abandoned US20190195382A1 (en) 2017-12-22 2018-12-18 Valve with electrodynamic actuator
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CN110030391A (zh) 2019-07-19
US11326710B2 (en) 2022-05-10
DE102017131246A1 (de) 2019-06-27
US20200408325A1 (en) 2020-12-31
CN110030391B (zh) 2023-05-30

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