EP3775641A1 - Electromagnetic valve and air diverter valve - Google Patents

Electromagnetic valve and air diverter valve

Info

Publication number
EP3775641A1
EP3775641A1 EP19717855.1A EP19717855A EP3775641A1 EP 3775641 A1 EP3775641 A1 EP 3775641A1 EP 19717855 A EP19717855 A EP 19717855A EP 3775641 A1 EP3775641 A1 EP 3775641A1
Authority
EP
European Patent Office
Prior art keywords
valve
armature
coil
valve member
parameter
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Withdrawn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
EP19717855.1A
Other languages
German (de)
French (fr)
Inventor
Klemens Schander
Björn DIESSL
Stefan DINGES
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.)
Woco Industrietechnik GmbH
Original Assignee
Woco Industrietechnik 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 Woco Industrietechnik GmbH filed Critical Woco Industrietechnik GmbH
Publication of EP3775641A1 publication Critical patent/EP3775641A1/en
Withdrawn legal-status Critical Current

Links

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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0041—Electrical or magnetic means for measuring valve parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/16—Control of the pumps by bypassing charging air
    • 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
    • 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
    • F16K31/0679—Electromagnet aspects, e.g. electric supply therefor with more than one energising coil
    • 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
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/128—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like servo actuated
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/42—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • 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
    • 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
    • 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
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/42—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor
    • F16K31/423—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor the actuated members consisting of multiple way valves
    • 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
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H01F2007/185—Monitoring or fail-safe circuits with armature position measurement
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a valve (electromagnetic valve, in particular pilot valve for controlling a main valve, such as a pilot operated valve within a diverter valve, comprising at least one with at least one movable along a first axis armature operatively connected valve member and at least one coil element, wherein by means of a current supply the coil element movement of the armature and the valve member is reached) and a diverter valve, comprising such a valve.
  • a valve electronic valve, in particular pilot valve for controlling a main valve, such as a pilot operated valve within a diverter valve, comprising at least one with at least one movable along a first axis armature operatively connected valve member and at least one coil element, wherein by means of a current supply the coil element movement of the armature and the valve member is reached
  • a diverter valve comprising such a valve.
  • the diverter valve comprises a main valve by means of which the flow of at least one fluid, in particular within a motor vehicle, can be controlled along a fluid path.
  • the main valve operates pneumatically, with control of the main valve via an electromagnetic control or pilot valve.
  • This diverter valve has proven itself in principle, because it has a lower energy consumption, in particular in comparison to diverter valves, in which there is a direct electromagnetic control of the main valve.
  • the pressures present in the fluid path are used to assist the movement of the pilot valve and thus to reduce its energy consumption.
  • a disadvantage of this diverter valve is that an additional sensor unit is necessary to detect the operating position of the diverter valve, in particular the pilot valve.
  • an additional sensor element must be arranged on the valve member of the main valve or the pilot valve. This leads to, that a certain installation space for the sensor element must be made available, whereby the volume of construction is increased in order to achieve sufficient structural strength and thus reliability of the valve member.
  • the electromagnetic valve is characterized by at least one sensing element by means of which at least one parameter of the coil element can be detected, wherein by means of the parameter, the position of the armature and / or the valve member can be determined.
  • the coil element surround the first axis and / or the armature at least regionally, preferably coaxially, at least in regions.
  • the coil element comprises at least two individual coils, preferably exactly two individual coils, wherein preferably the individual coils are arranged one behind the other along the first axis and / or at least one single coil, in particular all individual coils, preferably at least in regions, in particular partially coaxial, the first axis and / or the armature surrounds or surround.
  • At least one permanent magnet is arranged between two individual coils with respect to the first axis, wherein the permanent magnet is at least partially formed as a ring magnet, in particular at least partially, preferably at least partially coaxially surrounding the first axis and / or the armature ,
  • the sensing element at least a first parameter of a first single coil and / or at least a second parameter of a detected second single coil, wherein preferably the permanent magnet between the first single coil and the second single coil arranged
  • an electromagnetic valve according to the invention can be characterized by, at least one control and / or regulating device, wherein the control and / or regulating device with the sensing device, the coil element, and / or the single coil, in particular the first single coil and / or the second single coil is operatively connected and / or the Anleer and / or the valve member, preferably by means of the control and / or regulating device, in at least two different positions along the first axis is movable.
  • the method of the armature and / or the valve member by controlling the coil element in particular the single coil, preferably a plurality, preferably all individual coils, depending on a, preferably the control and / or regulating device by means of at least a setpoint input input supplied, target value takes place.
  • a first position of the armature and / or the valve member corresponds to a closed position in which preferably the valve member on at least one valve seat, in particular for closing a connection between at least one valve inlet and at least one valve outlet, preferably sealingly rests and / or a second position of the armature and / or the valve member corresponds to an open position, in which preferably the valve member is at least partially lifted from the valve seat, in particular for opening a connection between the valve inlet and the valve outlet.
  • the parameter in particular the first parameter and / or the second parameter, at least one inductance, at least one ohmic resistance, and / or at least one impedance of the Coil element and / or the single coil, preferably the first single coil and / or the second single coil comprises.
  • the invention provides a diverter valve comprising at least one, preferably pneumatic and / or hydraulic, main valve and at least one pilot valve for controlling the main valve, wherein the pilot valve is in the form of an electromagnetic valve according to the invention.
  • the main valve may preferably be designed as a two-way valve or as a three-way valve.
  • the main valve can be set in two switching positions.
  • the fluid inlet is preferably sealed off from the fluid outlet in a switching position, whereas in the second switching position the fluid inlet is connected to the fluid outlet.
  • three lines, in particular a fluid inlet and two fluid outlets, are preferably provided.
  • the fluid inlet is connected to one of the two fluid outlets, while the other fluid outlet is sealed off from the fluid inlet.
  • the other fluid outlet is preferably connected to the fluid inlet, while the one fluid outlet is sealed off from the fluid inlet.
  • valve member of the main valve preferably each has a sealing element which cooperates in the corresponding switching position, each with a valve seat of the main valve, in particular in each case seals a fluid outlet with respect to the fluid inlet.
  • the fluid outputs are aligned parallel to the fluid inlet, in particular aligned tuning fork-shaped to each other.
  • valve member of the main valve is configured as a hollow body having an inlet opening facing the fluid inlet and an outlet opening facing the pilot valve, via which the pilot valve can be acted upon by the fluid pressure on the valve member.
  • the invention is thus based on the surprising finding that the construction of an electromagnetic valve which simultaneously enables the detection of a position of a valve member of the valve can be significantly simplified by using a sensing unit which does not require additional attachments or abutments to the valve member or valves makes moving parts necessary by performing an evaluation of Parameters of a coil element of the valve is performed.
  • it makes sense to detect the inductance of the coil element, for example by detecting the voltage supplied to the coil element of the supplied current and / or the phase shift, and to derive the position of an armature or valve member of the electromagnetic valve by means of a sensing unit.
  • the associated space required is significantly reduced in comparison to known from the prior art sensor units, since no additional attachments such as sensor elements on moving parts are necessary, but only one must be provided even in known from the prior art sensor units electronics.
  • the pilot valve is designed as a bistable valve.
  • Such a bistable design of the valve also has the advantage that the energy efficiency can be further increased, in particular the energy consumption can be significantly reduced.
  • the coil element comprises at least two individual coils, between which a permanent magnet element, in particular a ring-permanent magnet element is arranged. In this way it is possible to achieve an energy-saving control of the medium flow.
  • the circuit of high pressures can be achieved, in particular due to the utilization of the pressures of the switched fluid, wherein moreover a lower total weight is achieved.
  • the energy consumption compared to known from the prior art systems is significantly reduced, since only the actual switching movement, in particular the movement of the valve member from the closed to the open position and vice versa energy is needed, but not to hold the valve in the corresponding position.
  • this holding is achieved on the one hand by the permanent magnet within the pilot valve and holding the main valve on the other hand due to the corresponding switching position of the pilot valve for the main valve by the resulting from the pressure of the fluid to be switched forces.
  • the bistable or bipolar structure through the use of at least two individual coils facilitates the position determination of the pilot valve and thus the main valve and increases the functional safety of the entire diverter valve.
  • the evaluation can be carried out such that a parameter of the entire coil element is detected in order to perform a position detection, but it is also possible that only one parameter of one or each individual coil is detected.
  • the recorded parameters are, in particular, the inductance, an ohmic resistance, an impedance or other parameters of electromagnetic coils which are in principle easily detectable.
  • the only additional element for position detection therefore, only electronics in the form of a control and / or regulating device is necessary, which is coupled to the sensing device or contains same.
  • Figure 1 is a partial cross-sectional view of a diverter valve according to the invention with an electromagnetic valve according to the invention, used as a pilot valve;
  • Figures 2a and 2b are respective cross-sectional views of the diverter valve of Figure 1 in different switching positions.
  • Figure 3 is a cross-sectional view of another embodiment of an electromagnetic valve according to the invention, as it can be used in the diverter valve of Figure 1;
  • Figure 4 is a partial cross-sectional view of another embodiment of a diverter valve according to the invention with an electromagnetic valve according to the invention, used as a pilot valve;
  • FIG. 5 shows an enlarged view of the detail A from FIG. 4.
  • FIG. 1 shows a partial cross-sectional view of a diverter valve 1 according to the invention.
  • the diverter valve 1 comprises a main valve 3 as well as a 3-way valve formed from electromagnetic control or pilot valve fifth
  • the main valve 1 has a fluid inlet 7 and a fluid outlet 9 for a fluid to be switched by the diverter valve 1.
  • the fluid is at a pressure Pl, while the fluid in the region of the fluid outlet 9 has a pressure P2.
  • the voltage applied to the fluid inlet 7 Pl is applied via a, a valve input of the pilot valve 5 performing line 11 to a valve seat 13 of the pilot valve 5.
  • the pilot valve 5 By switching the pilot valve 5, the prevailing in the line 11 fluid pressure Pl is selectively fed via a, a valve output of the pilot valve 5 performing line 15 a control chamber 17 of the main valve 3 or via a line 19, which is also referred to as bypass line, the fluid outlet 9.
  • opening the pilot valve 5 by means of the drive 21 causes the pressure P 1 prevailing at the fluid inlet 7 to also be supplied to the control chamber 17. Due to the fact that in the control chamber 17, ie on an upper side, a membrane active surface 23 of the main valve, the same pressure prevails, as on the underside of the membrane active surface 23, which faces the fluid inlet 7, the valve member 25 of the main valve 3 in the direction of a valve seat 27 of the main valve 3 is moved, thus closing a connection between the fluid inlet 7 and the fluid outlet 9. Due to the magnitude equality of the forces acting on the respective sides of the membrane active surface 23 forces, the closing takes place via a by a spring element 29 on the Valve member 25 acting force. However, comparatively small forces are necessary, so that the spring element 29 can be dimensioned comparatively small.
  • the diverter valve 1 is shown in the respective two operating positions. As can be seen from Figure 2a, the diverter valve 1 is shown in the open position of the main valve 3.
  • the pilot valve 5 is in a position in which a valve member 31 of the pilot valve 5 rests on a valve seat 33. This results in that a connection between the control chamber 17 and the fluid outlet 9 is made and so in the control chamber 17, the pressure P2 is applied. However, this pressure P2 is less than the pressure Pl, so that the valve member 25 is lifted from the valve seat 27 and so the connection between the fluid inlet 7 and the fluid outlet 9 is released.
  • an imbalance of forces prevails on the membrane active surface 23 such that the pressure acting on the underside of the membrane active surface 23 is greater than the pressure acting on the upper side in the control chamber 17.
  • This pressure difference allows the valve member 25 to be moved against the force developed by the spring element 29. If, by means of the drive 21, the valve member 31 or the armature 37 is moved along the first axis A such that it is lifted off the valve seat 13, the fluid course shown in FIG. 2b results.
  • the pressure P 1 acting on the fluid inlet 7 is supplied to the control chamber 17 via the line 15, so that a pressure equilibrium prevails at the diaphragm acting surface and the valve member 25 is transferred via the spring element 29 into the closed position in which the valve member 25 rests on the valve seat 27 becomes.
  • Erfmdungs according to the drive 21 is electrically connected via a connecting element 33 with a sensing device, not shown.
  • the sensing device makes it possible for a parameter of a coil element 35 of the drive 21 to be detected.
  • FIGS. 2a and 2b show a monostable drive 21.
  • an armature 37 which is in operative connection with the valve member 31, is moved against the force of a spring element 39 such that the pilot valve 5 is closed. If the energization of the coil element 35 is terminated, the situation illustrated in FIG. 2b arises, in which the armature 37 is forced out of the coil area along the first axis A by means of the spring element 39 and the valve element 13 is raised at the same time. Due to the different positions of the armature 37 Within the coil element 35, the inductance of the coil elements 35 changes, making it possible to detect the position of the armature 37 and thus of the valve member 31.
  • FIG. 3 shows a cross-sectional view of a preferred modified embodiment of a pilot valve 5 '.
  • Those elements of the erfmdungs proper electromagnetic valve in the form of the pilot valve 5 4 which correspond to those of the pilot valve 5, carry the same reference numerals, but simply deleted.
  • the pilot valve 5 4 has a bistable drive 2G.
  • the coil element 35 ' comprises a first single coil 41', a second single coil 43 'and a permanent magnet 45'.
  • the individual coils 4G, 43 4 and the permanent magnet 45 4 are formed coaxially with the first axis A 4 of the armature 37 'as a ring-permanent magnet.
  • This structure has the advantage that only for the movement of the armature 37 4 and thus the valve member 31 4 energy must be expended.
  • the necessary holding force is applied by the permanent magnet 45. 4
  • the position of the armature 37 'and thus of the valve member 31 4 can be reliably detected via the sensing unit. This is done by means of the control and / or regulating device, not shown, which supplies on the one hand via the terminal 33 4 corresponding control signals to the coil elements 35 4 and the individual coils 4G and 43 4 and at the same time the detection of the parameters of the individual coils 4G and 43 4 , in particular allows the inductance and thus allows precise position monitoring or position detection.
  • FIG. 5 shows a partial cross-sectional view of a diverter valve 1 according to the invention.
  • the diverter valve 1 comprises a trained as a three-way valve Main valve 3 and designed as a three-way valve electromagnetic control or pilot valve 5. It is in the main valve 3 and the pilot valve 5 are each three / two-way valves.
  • the pilot valve 5 is formed substantially identical to the pilot valve 5 of Figures 1, 2a and 2b. However, the pilot valve 5 can also be formed like the pilot valve 5 'from FIG. Similar or identical elements described above and below are identified by the same or similar reference numerals.
  • the main valve 3 shown in FIG. 4 comprises a fluid inlet 7 and two fluid outlets 9, 9 ".
  • a diverter valve 1 In a diverter valve 1 according to the invention with a three-way valve as the main valve 3, it has been found preferable to form the fluid inlet 7 and the fluid outlets 9, g 'parallel to each other, in particular, as shown here, tuning fork-shaped.
  • the fluid outlets 9, g ' are preferably connected to the fluid inlet 7 via a valve member housing 47.
  • the valve member 25 "of the main valve 3 can be brought into two operating positions, wherein in one operating position the fluid inlet 7 is connected to the fluid outlet g 'and in the other operating position the fluid inlet 7 is connected to the fluid outlet 9.
  • the valve member 25 two sealing means 49, 49 ', depending on the operating position on one of the two valve seats 27", 27 "of the valve member housing 47 one of the fluid outputs 9, g' seal against the fluid inlet 9.
  • FIG. 4 shows the operating position in which the fluid inlet 7 is connected to the one fluid outlet g 'and the other fluid outlet 9 is sealed off from the fluid inlet 7 via the sealing means 49 fitting the valve seat 27 ".
  • This operating state is achieved in that the pilot valve 5 is set in a position in which the valve member 31 of the pilot valve rests on the valve seat 33 of the pilot valve.
  • the control chamber 17 is acted upon via a valve inlet of the pilot valve 5 performing line 11 "and a valve output of the pilot valve 5 performing line 15" with the pressure Pi.
  • the third line 19 "of the pilot valve 5 acts as a bypass line, which is sealed in the position shown in Figure 4 by the voltage applied to the valve seat 13 'valve member 31' of the pilot valve 5 relative to the control chamber 17. Due to the larger effective effective area of the pressure Pi on the side of the control chamber 17, the valve member 25 'is driven into the position shown, in which the seal 49 rests against the valve seat 27 * of the main valve 3.
  • the valve member 31 of the pilot valve By actuating the pilot valve 5, the valve member 31 of the pilot valve can be moved away from the valve seat 13 of the pilot valve, so that via the lines 19 "and 15" a Connection between the fluid outlet 9 and the control chamber 17 'is formed, via which the pressure Pi can be reduced. After the pressure reduction, the lower pressure P2 of the other fluid outlet 9 is present in the control chamber 17. In this state, the force acting on the valve member 25 "due to the spring member 29" and the pressure Pi outweighs the opposite force acting on the pressure P2 in the controller 17. Thereby, the valve member 25 'of the main valve 3 is displaced to the position not shown, jn of the fluid inlet 7 is connected to the further fluid outlet 9 and the fluid outlet g' is sealed relative to the fluid inlet 7.
  • valve can be used advantageously both in main valves in the form of two-way valves and in the form of three-way valves.
  • This bistable embodiment has a positive effect on energy efficiency in that, for example, for a cycle duration of 10 minutes, in which the pilot valve is opened for 5 minutes and closed for 5 minutes, for 6 cycles with a supply voltage of 12 volts only an energy requirement of 40 watt seconds necessary is.
  • an energy requirement of 13000 watt seconds is necessary, which is still less than for a direct electromagnetic actuation of the main valve 3 by means of an electromagnetic drive, in which a demand of 22,000 watt seconds arises.
  • the reduced energy consumption makes it possible to use the valve according to the invention in electric vehicles, in order to be able to switch corresponding fluid flows with a lower energy requirement by several 1 Oer potencies, in comparison to known from the prior art Schubumluftventilen.
  • an inventive electromagnetic valve which can be used as a pilot valve within a diverter valve, a lower switching force, whereby a drive with a smaller volume can be used and thus results in a compact design.
  • the drive is designed as a bistable or bipolar drive, a reduction of the energy requirement is achieved, which again results in a significant weight reduction. Due to the geometry of the main valve, however, it is simultaneously possible with a low energy to switch high pressures and the Valve, in particular diverter valve, can be used for various applications, since neither the pressure nor the flow of the fluid affects the switching force.
  • the continuous monitoring of the position of the pilot valve ensures a high degree of operational reliability and ensures that the diverter valve can be transferred to a predefined fail-safe position in the event of functional defects.
  • a compact construction also results from the fact that, in particular in the case of a bipolar drive, a simple position evaluation results by detecting the parameters of the coil element.

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Abstract

The invention relates to an electromagnetic valve, in particular a pilot valve (5) for controlling a main valve (3), such as a pilot-controlled valve within an air diverter valve, comprising: at least one valve element (31, 31') operatively connected to at least one armature (37, 37') that can move along a first axis (A, A'); at least one coil element (35, 35', 41', 43'), wherein a movement of the armature and/or the valve element can be achieved by energising the coil element; and at least one sensing element by means of which at least one parameter of the coil element can be detected, said parameter allowing the position of the armature and/or the valve element to be determined.

Description

Elektromagnetisches Ventil und Schubumluftventil  Electromagnetic valve and diverter valve
Beschreibung description
Die vorliegende Erfindung betrifft ein Ventil (Elektromagnetisches Ventil, insbesondere Pilotventil zur Steuerung eines Hauptventils, wie eines vorgesteuerten Ventils innerhalb eines Schubumluftventils, umfassend zumindest ein mit zumindest einem entlang einer ersten Achse bewegbaren Anker in Wirkverbindung stehendes Ventilglied und zumindest ein Spulenelement, wobei mittels eine Bestromung des Spulenelementes eine Bewegung des Ankers und des Ventilgliedes erreichbar ist) sowie ein Schubumluftventil, umfassend ein solches Ventil. The present invention relates to a valve (electromagnetic valve, in particular pilot valve for controlling a main valve, such as a pilot operated valve within a diverter valve, comprising at least one with at least one movable along a first axis armature operatively connected valve member and at least one coil element, wherein by means of a current supply the coil element movement of the armature and the valve member is reached) and a diverter valve, comprising such a valve.
Schubumluft ventile sind aus dem Stand der Technik bekannt. So offenbart beispielsweise die DE 20 2016 104 363 Ul der Anmelderin ein solches Schubumluftventil. Das Schubumluft ventil umfasst ein Hauptventil, mittels dem der Fluss zumindest eines Fluids, insbesondere innerhalb eines Kraftfahrzeugs, entlang eines Fluidpfades gesteuert werden kann. Das Hauptventil arbeitet pneumatisch, wobei eine Ansteuerung des Hauptventils über ein elektromagnetisches Steuer- bzw. Pilotventil erfolgt. Return air valves are known from the prior art. For example, DE 20 2016 104 363 U1 discloses the Applicant such a diverter valve. The diverter valve comprises a main valve by means of which the flow of at least one fluid, in particular within a motor vehicle, can be controlled along a fluid path. The main valve operates pneumatically, with control of the main valve via an electromagnetic control or pilot valve.
Dieses Schubumluftventil hat sich grundsätzlich bewährt, weil es insbesondere im Vergleich zu Schubumluftventilen, bei denen eine direkte elektromagnetische Ansteuerung des Hauptventils erfolgt, einen geringeren Energieverbrauch aufweist. So werden insbesondere die in dem Fluidpfad vorliegenden Drücke dazu genutzt, die Bewegung des Pilot- bzw. Steuerventils zu unterstützen und so dessen Energieverbrauch zu reduzieren. This diverter valve has proven itself in principle, because it has a lower energy consumption, in particular in comparison to diverter valves, in which there is a direct electromagnetic control of the main valve. In particular, the pressures present in the fluid path are used to assist the movement of the pilot valve and thus to reduce its energy consumption.
Nachteilig an diesem Schubumluftventil ist jedoch, dass eine zusätzliche Sensoreinheit notwendig ist, um die Betriebsposition des Schubumluftventils, insbesondere des Pilotventils zu erfassen. Insbesondere ist es notwendig, dass an dem Ventilglied des Hauptventils bzw. des Pilotventils ein zusätzliches Sensorelement angeordnet werden muss. Dies führt dazu, dass ein gewisser Einbauraum für das Sensorelement zur Verfügung gestellt werden muss, wodurch das Bauvolumen erhöht wird, um eine ausreichende Strukturfestigkeit und damit Betriebssicherheit des Ventilgliedes zu erreichen. A disadvantage of this diverter valve, however, is that an additional sensor unit is necessary to detect the operating position of the diverter valve, in particular the pilot valve. In particular, it is necessary that an additional sensor element must be arranged on the valve member of the main valve or the pilot valve. This leads to, that a certain installation space for the sensor element must be made available, whereby the volume of construction is increased in order to achieve sufficient structural strength and thus reliability of the valve member.
Es ist daher Aufgabe der vorliegenden Erfindung, ein elektromagnetisches Ventil bereitzustellen, welches insbesondere als Steuer und/oder Pilotventil in einem Schubumluftventil einsetzbar ist, mit welchem die aus dem Stand der Technik vorbekannten Nachteile überwunden werden, insbesondere eine konstruktiv einfache und verlässliche Überwachung einer Schaltstellung des Schubumluftventils bzw. des Pilotventils ermöglicht wird. Darüber hinaus wäre es wünschenswert, den Energieverbrauch des Schubumluftventils bzw. des Pilotventils weiter zu reduzieren. It is therefore an object of the present invention to provide an electromagnetic valve which can be used in particular as a control and / or pilot valve in a diverter valve with which the known from the prior art disadvantages are overcome, in particular a structurally simple and reliable monitoring a switching position of Diverter valve or the pilot valve is made possible. In addition, it would be desirable to further reduce the energy consumption of the diverter valve or the pilot valve.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das elektromagnetische Ventil gekennzeichnet ist durch zumindest ein Sensierelement mittels dem zumindest ein Parameter des Spulenelementes erfassbar ist, wobei mittels des Parameters die Position des Ankers und/oder des Ventilgliedes bestimmbar ist. This object is achieved in that the electromagnetic valve is characterized by at least one sensing element by means of which at least one parameter of the coil element can be detected, wherein by means of the parameter, the position of the armature and / or the valve member can be determined.
Dabei wird insbesondere vorgeschlagen, dass das Spulenelement zumindest bereichsweise, vorzugsweise zumindest bereichsweise koaxial, die erste Achse und/oder den Anker umgibt. In this case, it is in particular proposed that the coil element surround the first axis and / or the armature at least regionally, preferably coaxially, at least in regions.
In den zuvor genannten Ausführungsformen ist besonderes bevorzugt, dass das Spulenelement zumindest zwei Einzelspulen, vorzugsweise genau zwei Einzelspulen, umfasst, wobei vorzugsweise die Einzelspulen entlang der ersten Achse hintereinander angeordnet sind und/oder zumindest eine Einzelspule, insbesondere alle Einzelspulen, vorzugsweise zumindest bereichsweise, insbesondere bereichsweise koaxial, die erste Achse und/oder den Anker umgibt bzw. umgeben. In the aforementioned embodiments, it is particularly preferred that the coil element comprises at least two individual coils, preferably exactly two individual coils, wherein preferably the individual coils are arranged one behind the other along the first axis and / or at least one single coil, in particular all individual coils, preferably at least in regions, in particular partially coaxial, the first axis and / or the armature surrounds or surround.
Bei der vorgenannten Ausführungsform ist besonders bevorzugt, dass zumindest ein Permanentmagnet bezüglich der ersten Achse zwischen zwei Einzelspulen angeordnet ist, wobei vorzugsweise der Permanentmagnet zumindest bereichsweise als Ringmagnet ausgebildet ist, insbesondere zumindest bereichsweise, vorzugsweise zumindest bereichsweise koaxial die erste Achse und/oder den Anker umgibt. In the aforementioned embodiment, it is particularly preferred that at least one permanent magnet is arranged between two individual coils with respect to the first axis, wherein the permanent magnet is at least partially formed as a ring magnet, in particular at least partially, preferably at least partially coaxially surrounding the first axis and / or the armature ,
Auch wird mit der Erfindung vorgeschlagen, dass das Sensierelement zumindest einen ersten Parameter einer ersten Einzelspule und/oder zumindest einen zweiten Parameter einer zweiten Einzelspule erfasst, wobei vorzugsweise der Permanentmagnet zwischen der ersten Einzelspule und der zweiten Einzelspule angeordnet It is also proposed with the invention that the sensing element at least a first parameter of a first single coil and / or at least a second parameter of a detected second single coil, wherein preferably the permanent magnet between the first single coil and the second single coil arranged
Weiterhin kann ein erfindungsgemäß elektromagnetisches Ventil gekennzeichnet sein durch, zumindest eine Steuer- und/oder Regeleinrichtung, wobei die Steuer- und/oder Regeleinrichtung mit der Sensiereinrichtung, dem Spulenelement, und/oder der Einzelspule, insbesondere der ersten Einzelspule und/oder der zweiten Einzelspule in Wirkverbindung steht und/oder der Anleer und/oder das Ventilglied, vorzugsweise mittels der Steuer- und/oder Regeleinrichtung ,in zumindest zwei unterschiedliche Positionen entlang der ersten Achse verfahrbar ist. Furthermore, an electromagnetic valve according to the invention can be characterized by, at least one control and / or regulating device, wherein the control and / or regulating device with the sensing device, the coil element, and / or the single coil, in particular the first single coil and / or the second single coil is operatively connected and / or the Anleer and / or the valve member, preferably by means of the control and / or regulating device, in at least two different positions along the first axis is movable.
Bei der vorgenannten Ausführungsform ist besonders bevorzugt, dass das Verfahren des Ankers und/oder des Ventilglieds durch Ansteuerung des Spulenelementes, insbesondere der Einzelspule, vorzugsweise einer Mehrzahl, vorzugsweise aller Einzelspulen, in Abhängigkeit von einem, vorzugsweise der Steuer- und/oder Regeleinrichtung mittels zumindest einem Soll-Wert Eingang zugeführten, Soll-Wert erfolgt. In the aforementioned embodiment, it is particularly preferred that the method of the armature and / or the valve member by controlling the coil element, in particular the single coil, preferably a plurality, preferably all individual coils, depending on a, preferably the control and / or regulating device by means of at least a setpoint input input supplied, target value takes place.
Für diese Ausführungsform wird auch vorgeschlagen, dass mittels der Steuer- und/oder Regeleinrichtung ein Vergleich zwischen dem Soll-Wert und einer mittels der Sensiereinrichtung erfassten Ist-Position des Ankers und/oder des Ventilglieds durchführbar ist. For this embodiment, it is also proposed that by means of the control and / or regulating device, a comparison between the desired value and a detected by means of the sensing device actual position of the armature and / or the valve member is feasible.
Weiterhin schlägt die Erfindung vor, dass eine erste Position des Ankers und/oder des Ventilglieds einer geschlossenen Position entspricht, in der vorzugsweise das Ventilglied auf zumindest einem Ventilsitz, insbesondere zum Verschließen einer Verbindung zwischen zumindest einem Ventileingang und zumindest einem Ventilausgang, vorzugsweise dichtend, aufliegt und/oder eine zweite Position des Ankers und/oder des Ventilgliedes einer Offenposition entspricht, in der vorzugsweise das Ventilglied zumindest bereichsweise von dem Ventilsitz abgehoben ist, insbesondere zum Öffnen einer Verbindung zwischen dem Ventileingang und dem Ventilausgang. Furthermore, the invention proposes that a first position of the armature and / or the valve member corresponds to a closed position in which preferably the valve member on at least one valve seat, in particular for closing a connection between at least one valve inlet and at least one valve outlet, preferably sealingly rests and / or a second position of the armature and / or the valve member corresponds to an open position, in which preferably the valve member is at least partially lifted from the valve seat, in particular for opening a connection between the valve inlet and the valve outlet.
Schließlich wird für das elektromagnetische Ventil vorgeschlagen, dass der Parameter, insbesondere der erste Parameter und/oder der zweite Parameter, zumindest eine Induktivität, zumindest einen ohmschen Widerstand, und/oder zumindest eine Impedanz, des Spulenelementes und/oder der Einzelspule, vorzugweise der ersten Einzelspule und/oder der zweiten Einzelspule umfasst. Finally, it is proposed for the electromagnetic valve that the parameter, in particular the first parameter and / or the second parameter, at least one inductance, at least one ohmic resistance, and / or at least one impedance of the Coil element and / or the single coil, preferably the first single coil and / or the second single coil comprises.
Ferner liefert die Erfindung ein Schubumluftventil umfassend zumindest ein, vorzugsweise pneumatisches und/oder hydraulisches, Hauptventil und zumindest ein Pilotventil zur Steuerung des Hauptventils wobei das Pilotventil in Form eines erfindungsgemäßen elektromagnetischen Ventils ausgebildet ist. Further, the invention provides a diverter valve comprising at least one, preferably pneumatic and / or hydraulic, main valve and at least one pilot valve for controlling the main valve, wherein the pilot valve is in the form of an electromagnetic valve according to the invention.
Das Hauptventil kann vorzugsweise als Zwei-Wege-Ventil oder als Drei-Wege-Ventil ausgebildet sein. Vorzugsweise kann das Hauptventil in zwei Schaltstellungen versetzt werden. Bei einem Zwei-Wege-Ventil ist in einer Schaltstellung vorzugsweise der Fluideingang gegenüber dem Fluidausgang abgedichtet, wohingegen in der zweiten Schaltstellung der Fluideingang mit dem Fluidausgang verbunden ist. Bei einem Drei-Wege- Ventil sind vorzugsweise drei Leitungen, insbesondere ein Fluideingang und zwei Fluidausgänge, vorgesehen. Vorzugsweise ist in einer Schaltstellung der Fluideingang mit einem der zwei Fluidausgänge verbunden, während der andere Fluidausgang gegenüber dem Fluideingang abgedichtet ist. In einer zweiten Schaltstellung ist vorzugsweise der andere Fluidausgang mit dem Fluideingang verbunden, während der eine Fluidausgang gegenüber dem Fluideingang abgedichtet. Dafür weist das Ventilglied des Hauptventils vorzugsweise jeweils ein Dichtelement auf, das in der entsprechenden Schaltstellung mit jeweils einem Ventilsitz des Hauptventils kooperiert, insbesondere jeweils einen Fluidausgang gegenüber dem Fluideingang abdichtet. Vorzugsweise sind bei der Ausgestaltung des Hauptventils als Drei-Wege-Ventil die Fluidausgänge parallel zum Fluideingang ausgerichtet, insbesondere stimmgabelförmig zu einander ausgerichtet. The main valve may preferably be designed as a two-way valve or as a three-way valve. Preferably, the main valve can be set in two switching positions. In a two-way valve, the fluid inlet is preferably sealed off from the fluid outlet in a switching position, whereas in the second switching position the fluid inlet is connected to the fluid outlet. In a three-way valve, three lines, in particular a fluid inlet and two fluid outlets, are preferably provided. Preferably, in a switching position, the fluid inlet is connected to one of the two fluid outlets, while the other fluid outlet is sealed off from the fluid inlet. In a second switching position, the other fluid outlet is preferably connected to the fluid inlet, while the one fluid outlet is sealed off from the fluid inlet. For this purpose, the valve member of the main valve preferably each has a sealing element which cooperates in the corresponding switching position, each with a valve seat of the main valve, in particular in each case seals a fluid outlet with respect to the fluid inlet. Preferably, in the embodiment of the main valve as a three-way valve, the fluid outputs are aligned parallel to the fluid inlet, in particular aligned tuning fork-shaped to each other.
Vorzugsweise ist das Ventilglied des Hauptventils als Hohlkörper ausgestaltet, der eine dem Fluideingang zugewandte Einlassöffnung und eine dem Pilotventil zugewandte Auslassöffnung aufweist, über die das Pilotventil mit dem fluideingangsseitigen Druck durch das Ventilglied hindurch beaufschlagt werden kann. Preferably, the valve member of the main valve is configured as a hollow body having an inlet opening facing the fluid inlet and an outlet opening facing the pilot valve, via which the pilot valve can be acted upon by the fluid pressure on the valve member.
Der Erfindung liegt somit die überraschende Erkenntnis zugrunde, dass der Aufbau eines elektromagnetischen Ventils, welches gleichzeitig die Erfassung einer Position eines Ventilgliedes des Ventils ermöglicht, deutlich vereinfacht werden kann, indem eine Sensiereinheit eingesetzt wird, die keine zusätzlichen Anbauten bzw. Aufbauten an dem Ventilglied bzw. bewegbaren Teile notwendig macht, indem eine Auswertung von Parametern eines Spulenelementes des Ventils durchgeführt wird. Insbesondere bietet es sich an, die Induktivität des Spulenelementes beispielsweise durch Erfassung der dem Spulenelement zugeführten Spannung des zugeführten Stroms und/oder der Phasenverschiebung, zu erfassen und mittels einer Sensiereinheit die Position eines Ankers bzw. Ventilgliedes des elektromagnetischen Ventils abzuleiten. Der damit verbundene notwendige Bauraum ist im Vergleich zu aus dem Stand der Technik bekannten Sensoreinheiten deutlich reduziert, da keine zusätzlichen Anbauten wie Sensorelemente an bewegliche Teile notwendig sind, sondern lediglich eine auch bei aus dem Stand der Technik bekannten Sensoreinheiten notwendige Elektronik vorgesehen werden muss. The invention is thus based on the surprising finding that the construction of an electromagnetic valve which simultaneously enables the detection of a position of a valve member of the valve can be significantly simplified by using a sensing unit which does not require additional attachments or abutments to the valve member or valves makes moving parts necessary by performing an evaluation of Parameters of a coil element of the valve is performed. In particular, it makes sense to detect the inductance of the coil element, for example by detecting the voltage supplied to the coil element of the supplied current and / or the phase shift, and to derive the position of an armature or valve member of the electromagnetic valve by means of a sensing unit. The associated space required is significantly reduced in comparison to known from the prior art sensor units, since no additional attachments such as sensor elements on moving parts are necessary, but only one must be provided even in known from the prior art sensor units electronics.
Eine besonders einfache Überwachung der Schaltstellung des Pilotventils bzw. Hauptventils ergibt sich in dem Fall, in dem das Pilotventil als bistabiles Ventil ausgebildet wird. Eine derartige bistabile Ausführung des Ventils bietet ferner den Vorteil, dass die Energieeffizienz noch weiter gesteigert werden kann, insbesondere der Energieverbrauch deutlich reduziert werden kann. Bei dieser bistabilen Ausführung des Ventils ist vorgesehen, dass das Spulenelement zumindest zwei Einzelspulen umfasst, zwischen denen ein Permanent- Magnetelement, insbesondere ein Ring-Permanent-Magnetelement angeordnet ist. Auf diese Weise ist es möglich, eine energiesparende Steuerung des Mediumflusses zu erreichen. A particularly simple monitoring of the switching position of the pilot valve or main valve results in the case in which the pilot valve is designed as a bistable valve. Such a bistable design of the valve also has the advantage that the energy efficiency can be further increased, in particular the energy consumption can be significantly reduced. In this bistable embodiment of the valve is provided that the coil element comprises at least two individual coils, between which a permanent magnet element, in particular a ring-permanent magnet element is arranged. In this way it is possible to achieve an energy-saving control of the medium flow.
Gleichzeitig kann auch bei dieser bistabilen Ausführungsform die Schaltung hoher Drücke erreicht werden, insbesondere aufgrund der Ausnutzung der Drücke des geschaltenen Fluids, wobei darüber hinaus ein geringeres Gesamtgewicht erreicht wird. Aufgrund der bistabilen Ausführungsform ist der Energieverbrauch im Vergleich zu aus dem Stand der Technik bekannten Systemen deutlich reduziert, da nur zur eigentlichen Schaltbewegung, insbesondere der Bewegung des Ventilgliedes aus der Geschlossen- in die Öffnungsposition und umgekehrt Energie benötigt wird, jedoch nicht zum Halten des Ventils in der entsprechenden Position. So wird dieses Halten einerseits durch den Permanent-Magneten innerhalb des Pilotventils erreicht und das Halten des Hauptventils andererseits aufgrund der entsprechenden Schaltstellung des Pilotventils für das Hauptventil durch die aus dem Druck des zu schaltenden Fluids resultierenden Kräfte. At the same time in this bistable embodiment, the circuit of high pressures can be achieved, in particular due to the utilization of the pressures of the switched fluid, wherein moreover a lower total weight is achieved. Due to the bistable embodiment, the energy consumption compared to known from the prior art systems is significantly reduced, since only the actual switching movement, in particular the movement of the valve member from the closed to the open position and vice versa energy is needed, but not to hold the valve in the corresponding position. Thus, this holding is achieved on the one hand by the permanent magnet within the pilot valve and holding the main valve on the other hand due to the corresponding switching position of the pilot valve for the main valve by the resulting from the pressure of the fluid to be switched forces.
Insbesondere der bistabile bzw. bipolare Aufbau durch den Einsatz von zumindest zwei Einzelspulen erleichtert die Positionsbestimmung des Pilotventils und damit des Hauptventils und erhöht die funktionale Sicherheit des gesamten Schubumluftventils. So ist es leicht möglich, Fehlstellungen des Pilotventils und damit des Hauptventils zu erkennen und so geeignete Maßnahmen zu ergreifen, um das Schubumluftventil in eine Fail- Safe-Position zu überführen. Dabei kann die Auswertung derartig erfolgen, dass ein Parameter des gesamten Spulenelementes erfasst wird, um eine Positionsdetektion durchzufiihren, es ist jedoch auch möglich, dass lediglich ein Parameter einer oder jeder Einzelspule erfasst wird. In particular, the bistable or bipolar structure through the use of at least two individual coils facilitates the position determination of the pilot valve and thus the main valve and increases the functional safety of the entire diverter valve. Thus, it is easily possible to detect misalignments of the pilot valve and thus of the main valve and to take appropriate measures to transfer the diverter valve in a fail-safe position. In this case, the evaluation can be carried out such that a parameter of the entire coil element is detected in order to perform a position detection, but it is also possible that only one parameter of one or each individual coil is detected.
Als aufgenommene Parameter kommen insbesondere die Induktivität, ein Ohmscher Widerstand, eine Impedanz oder andere grundsätzlich leicht erfassbare Parameter von elektromagnetischen Spulen in Betracht. Als einziges zusätzliches Element zur Positionserfassung ist somit lediglich eine Elektronik in Form einer Steuer- und/oder Regeleinrichtung notwendig, die mit der Sensiereinrichtung gekoppelt ist bzw. diese beinhaltet. Durch einen einfachen Vergleich zwischen einem Soll- Wert und einem durch die Sensiereinheit erfassten Ist-Wert wird es möglich, die Position des Ventilgliedes des Pilotventils zu erfassen und mittels entsprechender Steuersignale an das Spulenelement bzw. Einzelspulen, das Pilotventil in die gewünschte Position zu überführen. The recorded parameters are, in particular, the inductance, an ohmic resistance, an impedance or other parameters of electromagnetic coils which are in principle easily detectable. As the only additional element for position detection, therefore, only electronics in the form of a control and / or regulating device is necessary, which is coupled to the sensing device or contains same. By a simple comparison between a desired value and an actual value detected by the sensing unit, it becomes possible to detect the position of the valve member of the pilot valve and to transfer the pilot valve to the desired position by means of appropriate control signals to the coil element or individual coils.
Dabei erfolgt eine Bewegung des Pilotventils insbesondere zwischen einer Geschlossenposition und einer Öffnungsposition, mit der es möglich ist, einen in einem Steuerraum des Hauptventils vorhandenen Druck zu verändern, um ein Ventilglied des Hauptventils zu öffnen bzw. zu schliessen. In this case, a movement of the pilot valve, in particular between a closed position and an open position, with which it is possible to change existing in a control chamber of the main valve pressure to open a valve member of the main valve or close.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der bevorzugte Ausfuhrungsformen der Erfindung anhand von Beispielen erläutert sind. Further features and advantages of the invention will become apparent from the following description, are explained in the preferred embodiments of the invention by way of examples.
Dabei zeigt: Showing:
Figur 1 eine Teilquerschnittsansicht eines erfindungsgemäßen Schubumluftventils mit einem erfindungsgemäßen elektromagnetischen, als Pilotventil eingesetzten Ventil; Figure 1 is a partial cross-sectional view of a diverter valve according to the invention with an electromagnetic valve according to the invention, used as a pilot valve;
Figur 2a und 2b jeweilige Querschnittsansichten des Schubumluftventils der Figur 1 in unterschiedlichen Schaltpositionen; Figur 3 eine Querschnittsansicht einer weiteren Ausführungsform eines erfindungsgemäßen elektromagnetischen Ventils, wie es im Schubumluftventils der Figur 1 einsetzbar ist; Figures 2a and 2b are respective cross-sectional views of the diverter valve of Figure 1 in different switching positions. Figure 3 is a cross-sectional view of another embodiment of an electromagnetic valve according to the invention, as it can be used in the diverter valve of Figure 1;
Figur 4 eine Teilquerschnittsansicht einer weiteren Ausführungsform eines erfindungsgemäßen Schubumluftventils mit einem erfindungsgemäßen elektromagnetischen, als Pilotventil eingesetzten Ventils; und Figure 4 is a partial cross-sectional view of another embodiment of a diverter valve according to the invention with an electromagnetic valve according to the invention, used as a pilot valve; and
Figur 5 eine vergrößerte Ansicht des Ausschnitts A aus Figur 4. FIG. 5 shows an enlarged view of the detail A from FIG. 4.
In Figur 1 ist eine Teilquerschnittsansicht eines erfindungsgemäßen Schubumluftventils 1 dargestellt. Das Schubumluftventil 1 umfasst ein Hauptventil 3 sowie ein als 3-Wege-Ventil aus gebildetes elektromagnetisches Steuer- bzw. Pilotventil 5. FIG. 1 shows a partial cross-sectional view of a diverter valve 1 according to the invention. The diverter valve 1 comprises a main valve 3 as well as a 3-way valve formed from electromagnetic control or pilot valve fifth
Das Hauptventil 1 weist einen Fluideingang 7 sowie einen Fluidausgang 9 für ein durch das Schubumluftventil 1 zu schaltendes Fluid auf. An dem Fluideingang 7 liegt das Fluid mit einem Druck Pl an, während das Fluid im Bereich des Fluidausgangs 9 einen Druck P2 aufweist. The main valve 1 has a fluid inlet 7 and a fluid outlet 9 for a fluid to be switched by the diverter valve 1. At the fluid inlet 7, the fluid is at a pressure Pl, while the fluid in the region of the fluid outlet 9 has a pressure P2.
Der an dem Fluideingang 7 anliegende Druck Pl wird über eine, einen Ventileingang des Pilotventils 5 darstellende Leitung 11 an einen Ventilsitz 13 des Pilotventils 5 angelegt. Durch Schalten des Pilotventils 5 wird der in der Leitung 11 herrschende Fluiddruck Pl wahlweise über eine, einen Ventilausgang des Pilotventils 5 darstellenden Leitung 15 einem Steuerraum 17 des Hauptventils 3 oder über eine Leitung 19, die auch als Bypassleitung bezeichnet wird, dem Fluidausgang 9 zugeführt. The voltage applied to the fluid inlet 7 Pl is applied via a, a valve input of the pilot valve 5 performing line 11 to a valve seat 13 of the pilot valve 5. By switching the pilot valve 5, the prevailing in the line 11 fluid pressure Pl is selectively fed via a, a valve output of the pilot valve 5 performing line 15 a control chamber 17 of the main valve 3 or via a line 19, which is also referred to as bypass line, the fluid outlet 9.
Wie später erläutert wird, fuhrt ein Öffnen des Pilotventils 5 mittels des Antriebs 21 dazu, dass der an dem Fluideingang 7 herrschende Druck Pl auch dem Steuerraum 17 zugeführt wird. Aufgrund der Tatsache, dass in dem Steuerraum 17, also auf einer Oberseite eine Membranwirkfläche 23 des Hauptventils der gleiche Druck herrscht, wie auf der Unterseite der Membranwirkfläche 23, die dem Fluideingang 7 zugewandt ist, wird das Ventilglied 25 des Hauptventils 3 in Richtung eines Ventilsitzes 27 des Hauptventils 3 bewegt und so eine Verbindung zwischen dem Fluideingang 7 und dem Fluidausgang 9 geschlossen. Aufgrund der betragsmäßigen Gleichheit der auf die jeweiligen Seiten der Membranwirkfläche 23 wirkenden Kräfte, erfolgt das Schließen über eine durch ein Federelement 29 auf das Ventilglied 25 wirkende Kraft. Dabei sind jedoch vergleichsweise geringe Kräfte notwendig, sodass das Federelement 29 vergleichsweise klein dimensioniert werden kann. As will be explained later, opening the pilot valve 5 by means of the drive 21 causes the pressure P 1 prevailing at the fluid inlet 7 to also be supplied to the control chamber 17. Due to the fact that in the control chamber 17, ie on an upper side, a membrane active surface 23 of the main valve, the same pressure prevails, as on the underside of the membrane active surface 23, which faces the fluid inlet 7, the valve member 25 of the main valve 3 in the direction of a valve seat 27 of the main valve 3 is moved, thus closing a connection between the fluid inlet 7 and the fluid outlet 9. Due to the magnitude equality of the forces acting on the respective sides of the membrane active surface 23 forces, the closing takes place via a by a spring element 29 on the Valve member 25 acting force. However, comparatively small forces are necessary, so that the spring element 29 can be dimensioned comparatively small.
In den Figuren 2a und 2b ist das Schubumluftventil 1 in den jeweiligen beiden Betriebspositionen dargestellt. Wie Figur 2a zu entnehmen ist, ist das Schubumluftventil 1 in der geöffneten Position des Hauptventils 3 dargestellt. Das Pilotventil 5 befindet sich in einer Position, in der ein Ventilglied 31 des Pilotventils 5 auf einem Ventilsitz 33 aufliegt. Dies führt dazu, dass eine Verbindung zwischen dem Steuerraum 17 und dem Fluidausgang 9 hergestellt ist und so in dem Steuerraum 17 der Druck P2 anliegt. Dieser Druck P2 ist jedoch geringer als der Druck Pl, sodass das Ventilglied 25 von dem Ventilsitz 27 abgehoben wird und so die Verbindung zwischen dem Fluideingang 7 und dem Fluidausgang 9 freigegeben wird. Insbesondere herrscht an der Membranwirkfläche 23 ein Kräfteungleichgewicht derartig, dass der auf die Unterseite der Membranwirkfläche 23 wirkende Druck größer als der auf der Oberseite in dem Steuerraum 17 wirkende Druck ist. Dieser Druckunterschied ermöglicht es, dass das Ventilglied 25 gegen die durch das Federelement 29 aufgebaute Kraft bewegt werden kann. Wird daraufhin mittels des Antriebs 21 das Ventilglied 31 bzw. der Anker 37 entlang der ersten Achse A derartig bewegt, dass es von dem Ventilsitz 13 abgehoben wird, ergibt sich der in der Figur 2b dargestellte Fluidverlauf. Der an dem Fluideingang 7 wirkende Druck Pl wird über die Leitung 15 dem Steuerraum 17 zugeftihrt, sodass an der Membranwirkfläche ein Druckgleichgewicht herrscht und das Ventilglied 25 über das Federelement 29 in die geschlossene Position, in der das Ventilglied 25 auf den Ventilsitz 27 aufliegt, überführt wird. In Figures 2a and 2b, the diverter valve 1 is shown in the respective two operating positions. As can be seen from Figure 2a, the diverter valve 1 is shown in the open position of the main valve 3. The pilot valve 5 is in a position in which a valve member 31 of the pilot valve 5 rests on a valve seat 33. This results in that a connection between the control chamber 17 and the fluid outlet 9 is made and so in the control chamber 17, the pressure P2 is applied. However, this pressure P2 is less than the pressure Pl, so that the valve member 25 is lifted from the valve seat 27 and so the connection between the fluid inlet 7 and the fluid outlet 9 is released. In particular, an imbalance of forces prevails on the membrane active surface 23 such that the pressure acting on the underside of the membrane active surface 23 is greater than the pressure acting on the upper side in the control chamber 17. This pressure difference allows the valve member 25 to be moved against the force developed by the spring element 29. If, by means of the drive 21, the valve member 31 or the armature 37 is moved along the first axis A such that it is lifted off the valve seat 13, the fluid course shown in FIG. 2b results. The pressure P 1 acting on the fluid inlet 7 is supplied to the control chamber 17 via the line 15, so that a pressure equilibrium prevails at the diaphragm acting surface and the valve member 25 is transferred via the spring element 29 into the closed position in which the valve member 25 rests on the valve seat 27 becomes.
Erfmdungs gemäß ist der Antrieb 21 über ein Anschlusselement 33 elektrisch mit einer nicht dargestellten Sensiereinrichtung verbunden. Die Sensiereinrichtung ermöglicht es, dass ein Parameter eines Spulenelementes 35 des Antriebs 21 erfasst wird. Erfmdungs according to the drive 21 is electrically connected via a connecting element 33 with a sensing device, not shown. The sensing device makes it possible for a parameter of a coil element 35 of the drive 21 to be detected.
In den Figuren 2a und 2b ist ein monostabiler Antrieb 21 dargestellt. Bei einer Bestromung des Spulenelementes 35 wird ein Anker 37, der mit dem Ventilglied 31 in Wirkverbindung steht, gegen die Kraft eines Federelementes 39 derartig bewegt, dass das Pilotventil 5 geschlossen wird. Wird die Bestromung des Spulenelementes 35 beendet, entsteht die in Figur 2b dargestellte Situation, in der der Anker 37 mittels des Federelementes 39 entlang der ersten Achse A aus dem Spulenbereich herausgedrängt wird und damit gleichzeitig das Ventilglied 13 angehoben wird. Aufgrund der unterschiedlichen Positionen des Ankers 37 innerhalb des Spulenelementes 35 verändert sich die Induktivität der Spulenelemente 35, wodurch es möglich wird, die Position des Ankers 37 und damit des Ventilgliedes 31 zu detektieren. FIGS. 2a and 2b show a monostable drive 21. When the coil element 35 is energized, an armature 37, which is in operative connection with the valve member 31, is moved against the force of a spring element 39 such that the pilot valve 5 is closed. If the energization of the coil element 35 is terminated, the situation illustrated in FIG. 2b arises, in which the armature 37 is forced out of the coil area along the first axis A by means of the spring element 39 and the valve element 13 is raised at the same time. Due to the different positions of the armature 37 Within the coil element 35, the inductance of the coil elements 35 changes, making it possible to detect the position of the armature 37 and thus of the valve member 31.
In Figur 3 ist eine Querschnittsansicht einer bevorzugten abgewandelten Ausfuhrungsform eines Pilotventils 5‘ dargestellt. Diejenigen Elemente des erfmdungs gemäßen elektromagnetischen Ventils in Form des Pilotventils 54, die denjenigen des Pilotventils 5 entsprechen, tragen die gleichen Bezugszeichen, allerdings einfach gestrichen. FIG. 3 shows a cross-sectional view of a preferred modified embodiment of a pilot valve 5 '. Those elements of the erfmdungs proper electromagnetic valve in the form of the pilot valve 5 4 , which correspond to those of the pilot valve 5, carry the same reference numerals, but simply deleted.
Im Vergleich zu dem Pilotventil 5 weist das Pilotventil 54 einen bistabilen Antrieb 2G auf. Dazu umfasst das Spulenelement 35‘ eine erste Einzelspule 41‘, eine zweite Einzelspule 43‘ sowie einen Permanent-Magneten 45‘. Die Einzelspulen 4G, 434 sowie der Permanent- Magnet 454 sind koaxial zur ersten Achse A4 des Ankers 37‘ als Ring-Permanent-Magnet ausgebildet. Compared to the pilot valve 5, the pilot valve 5 4 has a bistable drive 2G. For this purpose, the coil element 35 'comprises a first single coil 41', a second single coil 43 'and a permanent magnet 45'. The individual coils 4G, 43 4 and the permanent magnet 45 4 are formed coaxially with the first axis A 4 of the armature 37 'as a ring-permanent magnet.
Dieser Aufbau bietet den Vorteil, dass lediglich für die Bewegung des Ankers 374 und damit des Ventilgliedes 314 Energie aufgewandt werden muss. In der entsprechenden Endposition, beispielsweise der in der Figur 3 dargestellten Geschlossenposition des Pilotventils 54, in der das Ventilglied 314 auf dem Ventilsitz 134 aufliegt, wird die notwendige Haltekraft durch den Permanent-Magneten 454 aufgebracht. This structure has the advantage that only for the movement of the armature 37 4 and thus the valve member 31 4 energy must be expended. In the respective end position, for example, the closed position of the pilot valve 5 4, in which the valve member 31 4 rests on the valve seat 13 4 shown in Figure 3, the necessary holding force is applied by the permanent magnet 45. 4
Durch Erfassung der Parameter der Einzelspulen 414, 434 lässt sich verlässlich über die Sensiereinheit die Position des Ankers 37‘ und damit des Ventilgliedes 314 erfassen. Dies erfolgt mittels der nicht dargestellten Steuer- und/oder Regeleinrichtung, die einerseits über den Anschluss 334 entsprechende Steuersignale an die Spulenelemente 354 bzw. die Einzelspulen 4G und 434 liefert und gleichzeitig die Erfassung der Parameter der Einzelspulen 4G und 434 , insbesondere der Induktivität ermöglicht und so eine präzise Positionsüberwachung bzw. Positionserkennung ermöglicht. By detecting the parameters of the individual coils 41 4 , 43 4 , the position of the armature 37 'and thus of the valve member 31 4 can be reliably detected via the sensing unit. This is done by means of the control and / or regulating device, not shown, which supplies on the one hand via the terminal 33 4 corresponding control signals to the coil elements 35 4 and the individual coils 4G and 43 4 and at the same time the detection of the parameters of the individual coils 4G and 43 4 , in particular allows the inductance and thus allows precise position monitoring or position detection.
Für ein Umschalten des Pilotventils 5‘, also einen Schaltvorgang, ist lediglich eine Impulsbestromung der jeweiligen Einzelspulen 414, 434 bzw. Spulenelementes 35‘ für ca. 200 Millisekunden notwendig. For a switching of the pilot valve 5 ', that is, a switching operation, only a pulse energization of the respective individual coils 41 4 , 43 4 or coil element 35' for about 200 milliseconds is necessary.
In Figur 5 ist eine Teilquerschnittsansicht eines erfindungsgemäßen Schubumluftventils 1 dargestellt. Das Schubumluftventil 1 umfasst ein als Drei-Wege-Ventil ausgebildetes Hauptventil 3 sowie ein als Drei-Wege-Ventil ausgebildetes elektromagnetisches Steuer- bzw. Pilotventil 5. Dabei handelt es sich bei dem Hauptventil 3 und bei dem Pilotventil 5 jeweils um Drei/Zwei-Wege-Ventile. Das Pilotventil 5 ist im Wesentlichen identisch zu den Pilotventil 5 aus den Figuren 1, 2a und 2b ausgebildet. Das Pilotventil 5 kann aber auch wie das Pilotventil 5' aus Figur 3 ausbildet sein. Ähnliche oder identische der zuvor und folgend beschriebenen Elemente sind mit gleichen oder ähnlichen Bezugsziffern gekennzeichnet. Das in Figur 4 dargestellte Hauptventil 3 umfasst einen Fluideingang 7 sowie zwei Fluidausgänge 9, 9“. Bei einem erfindungsgemäßen Schubumluftventil 1 mit einem Drei- Wege-Ventil als Hauptventil 3 hat es sich als bevorzugt herausgestellt, den Fluideingang 7 und die Fluidausgänge 9, g‘ parallel zueinander, insbesondere, wie hier dargestellt, stimmgabelförmig auszubilden. Vorzugsweise sind die Fluidausgänge 9, g‘ über ein Ventilgliedgehäuse 47 mit dem Fluideingang 7 verbunden. Innerhalb des Ventilgliedgehäuses 47 ist das Ventilglied 25“ des Hauptventils 3 in zwei Betriebspositionen verbringbar, wobei in einer Betriebsposition der Fluideingang 7 mit dem Fluidausgang g‘ verbunden ist und in der anderen Betriebsposition der Fluideingang 7 mit dem Fluidausgang 9 verbunden ist. Dafür weist das Ventilglied 25“ zwei Dichtmittel 49, 49' auf, die je nach Betriebsposition an einem der zwei Ventilsitze 27“, 27“ des Ventilgliedgehäuses 47 einen der Fluidausgänge 9, g‘ gegenüber dem Fluideingang 9 abdichten. FIG. 5 shows a partial cross-sectional view of a diverter valve 1 according to the invention. The diverter valve 1 comprises a trained as a three-way valve Main valve 3 and designed as a three-way valve electromagnetic control or pilot valve 5. It is in the main valve 3 and the pilot valve 5 are each three / two-way valves. The pilot valve 5 is formed substantially identical to the pilot valve 5 of Figures 1, 2a and 2b. However, the pilot valve 5 can also be formed like the pilot valve 5 'from FIG. Similar or identical elements described above and below are identified by the same or similar reference numerals. The main valve 3 shown in FIG. 4 comprises a fluid inlet 7 and two fluid outlets 9, 9 ". In a diverter valve 1 according to the invention with a three-way valve as the main valve 3, it has been found preferable to form the fluid inlet 7 and the fluid outlets 9, g 'parallel to each other, in particular, as shown here, tuning fork-shaped. The fluid outlets 9, g 'are preferably connected to the fluid inlet 7 via a valve member housing 47. Within the valve member housing 47, the valve member 25 "of the main valve 3 can be brought into two operating positions, wherein in one operating position the fluid inlet 7 is connected to the fluid outlet g 'and in the other operating position the fluid inlet 7 is connected to the fluid outlet 9. For this purpose, the valve member 25 "two sealing means 49, 49 ', depending on the operating position on one of the two valve seats 27", 27 "of the valve member housing 47 one of the fluid outputs 9, g' seal against the fluid inlet 9.
In Figur 4 ist die Betriebsposition dargestellt, in der der Fluideingang 7 mit dem einen Fluidausgang g‘ verbunden ist und der andere Fluidausgang 9 gegenüber dem Fluideingang 7 über das an dem Ventilsitz 27“ anliegende Dichtmittel 49 abgedichtet ist. Dieser Betriebszustand wird dadurch erreicht, dass das Pilotventil 5 in eine Position versetzt wird, in der das Ventilglied 31 des Pilotventils auf dem Ventilsitz 33 des Pilotventils aufliegt. In dieser Stellung des Pilotventils 5 liegt der Druck Pi am Fluideingang 7, an dem einen Fluidausgang g‘ und in dem Steuerraum 17 an. Dabei wird der Steuerraum 17 über eine einen Ventileingang des Pilotventils 5 darstellende Leitung 11“ und eine einen Ventilausgang des Pilotventils 5 darstellende Leitung 15“ mit dem Druck Pi beaufschlagt. Die dritte Leitung 19“ des Pilotventils 5 fungiert als Bypassleitung, die in der in Figur 4 dargestellten Stellung durch das an dem Ventilsitz 13' anliegende Ventilglied 31' des Pilotventils 5 gegenüber dem Steuerraum 17 abgedichtet ist. Durch die größere effektive Wirkfläche des Druckes Pi auf Seiten des Steuerraums 17 wird das Ventilglied 25' in die dargestellte Stellung getrieben, in der die Dichtung 49 an dem Ventilsitz 27* des Hauptventils 3 anliegt. FIG. 4 shows the operating position in which the fluid inlet 7 is connected to the one fluid outlet g 'and the other fluid outlet 9 is sealed off from the fluid inlet 7 via the sealing means 49 fitting the valve seat 27 ". This operating state is achieved in that the pilot valve 5 is set in a position in which the valve member 31 of the pilot valve rests on the valve seat 33 of the pilot valve. In this position of the pilot valve 5, the pressure Pi at the fluid inlet 7, at the fluid outlet g 'and in the control chamber 17 at. In this case, the control chamber 17 is acted upon via a valve inlet of the pilot valve 5 performing line 11 "and a valve output of the pilot valve 5 performing line 15" with the pressure Pi. The third line 19 "of the pilot valve 5 acts as a bypass line, which is sealed in the position shown in Figure 4 by the voltage applied to the valve seat 13 'valve member 31' of the pilot valve 5 relative to the control chamber 17. Due to the larger effective effective area of the pressure Pi on the side of the control chamber 17, the valve member 25 'is driven into the position shown, in which the seal 49 rests against the valve seat 27 * of the main valve 3.
Durch Betätigen des Pilotventils 5 kann das Ventilglied 31 des Pilotventils von dem Ventilsitz 13 des Pilotventils wegbewegt werden, sodass über die Leitungen 19“ und 15“ eine Verbindung zwischen dem Fluidausgang 9 und dem Steuerraum 17' entsteht, über die der Druck Pi abgebaut werden kann. Nach dem Druckabbau liegt der niedrigere Druck P2 des anderen Fluidausgangs 9 in dem Steuerraum 17 an. In diesem Zustand überwiegt die Kraft, die an dem Ventilglied 25“ in Folge des Federelements 29“ und des Drucks Pi wirkt, gegenüber der entgegengesetzten Kraft, die über den Druck P2 in dem Steuerung 17 wirkt. Dadurch wird das Ventilglied 25' des Hauptventils 3 in die nicht dargestellte Stellung verlagert, jn der der Fluideingang 7 mit dem weiteren Fluidausgang 9 verbunden ist und der eine Fluidausgang g‘ gegenüber dem Fluideingang 7 abgedichtet ist. By actuating the pilot valve 5, the valve member 31 of the pilot valve can be moved away from the valve seat 13 of the pilot valve, so that via the lines 19 "and 15" a Connection between the fluid outlet 9 and the control chamber 17 'is formed, via which the pressure Pi can be reduced. After the pressure reduction, the lower pressure P2 of the other fluid outlet 9 is present in the control chamber 17. In this state, the force acting on the valve member 25 "due to the spring member 29" and the pressure Pi outweighs the opposite force acting on the pressure P2 in the controller 17. Thereby, the valve member 25 'of the main valve 3 is displaced to the position not shown, jn of the fluid inlet 7 is connected to the further fluid outlet 9 and the fluid outlet g' is sealed relative to the fluid inlet 7.
Demnach kann die erfindungsgemäße Ausgestaltung eines Ventils sowohl bei Hauptventilen in Form von Zwei-Wege-Ventilen als auch in Form von Drei-Wege-Ventilen vorteilhaft eingesetzt werden. Accordingly, the inventive design of a valve can be used advantageously both in main valves in the form of two-way valves and in the form of three-way valves.
Diese bistabile Ausftihrungsform wirkt sich insofern positiv auf die Energieeffizienz aus, als das beispielsweise für eine Zyklusdauer von 10 Minuten, in denen das Pilotventil 5 Minuten geöffnet und 5 Minuten geschlossen wird, über 6 Zyklen mit einer Versorgungsspannung von 12 Volt lediglich ein Energiebedarf von 40 Wattsekunden notwendig ist. Im Gegensatz hierzu ist für den Antrieb 21 der Figuren 1 bis 2b ein Energiebedarf von 13000 Wattsekunden notwendig, welcher jedoch immer noch geringer ist, als für eine direkte elektromagnetische Ansteuerung des Hauptventils 3 mittels eines elektromagnetischen Antriebs, bei dem ein Bedarf von 22000 Wattsekunden entsteht. This bistable embodiment has a positive effect on energy efficiency in that, for example, for a cycle duration of 10 minutes, in which the pilot valve is opened for 5 minutes and closed for 5 minutes, for 6 cycles with a supply voltage of 12 volts only an energy requirement of 40 watt seconds necessary is. In contrast, for the drive 21 of Figures 1 to 2b, an energy requirement of 13000 watt seconds is necessary, which is still less than for a direct electromagnetic actuation of the main valve 3 by means of an electromagnetic drive, in which a demand of 22,000 watt seconds arises.
Insbesondere der reduzierte Energieverbrauch ermöglicht es, dass das erfindungsgemäße Ventil in Elektrofahrzeugen einzusetzen, um entsprechende Fluidströme mit einem um mehrere 1 Oer-Potenzen geringeren Energiebedarf, im Vergleich zu aus dem Stand der Technik bekannten Schubumluftventilen, schalten zu können. In particular, the reduced energy consumption makes it possible to use the valve according to the invention in electric vehicles, in order to be able to switch corresponding fluid flows with a lower energy requirement by several 1 Oer potencies, in comparison to known from the prior art Schubumluftventilen.
Insbesondere ergibt sich also für ein erfindungsgemäßes elektromagnetisches Ventil, welches als Pilotventil innerhalb eines Schubumluftventils eingesetzt werden kann, eine geringere Schaltkraft, wodurch ein Antrieb mit einem geringeren Bauvolumen eingesetzt werden kann und sich somit eine kompakte Bauweise ergibt. Weiterhin wird bei Ausbildung des Antriebs als bistabil bzw. bipolaren Antrieb eine Reduzierung des Energiebedarfs erreicht, woraus sich erneut eine deutliche Gewichtsreduktion ergibt. Aufgrund der Geometrie des Hauptventils ist es jedoch gleichzeitig möglich mit einer geringen Energie hohe Drücke zu schalten und das Ventil, insbesondere Schubumluftventil, kann für verschiedene Anwendungsfälle genutzt werden, da weder der Druck noch der Durchfluss des Fluids die Schaltkraft beeinflusst. Gleichzeitig wird durch die stetige Überwachung der Position des Pilotventils eine hohe Betriebssicherheit erreicht und sichergestellt, dass das Schubumluftventil in eine vordefinierte Fail-Safe-Stellung überfuhrt werden kann, falls es zu Funktionsdefekten kommt. Insgesamt ergibt sich ein kompakter Aufbau auch dadurch, dass sich insbesondere bei einem bipolaren Antrieb eine einfache Positionsauswertung durch Erfassung der Parameter des Spulenelementes ergibt. In particular, therefore, results for an inventive electromagnetic valve, which can be used as a pilot valve within a diverter valve, a lower switching force, whereby a drive with a smaller volume can be used and thus results in a compact design. Furthermore, when the drive is designed as a bistable or bipolar drive, a reduction of the energy requirement is achieved, which again results in a significant weight reduction. Due to the geometry of the main valve, however, it is simultaneously possible with a low energy to switch high pressures and the Valve, in particular diverter valve, can be used for various applications, since neither the pressure nor the flow of the fluid affects the switching force. At the same time, the continuous monitoring of the position of the pilot valve ensures a high degree of operational reliability and ensures that the diverter valve can be transferred to a predefined fail-safe position in the event of functional defects. Overall, a compact construction also results from the fact that, in particular in the case of a bipolar drive, a simple position evaluation results by detecting the parameters of the coil element.
Die in der vorangehenden Beschreibung, in den Ansprüchen und den Figuren offenbarten Merkmale können sowohl einzeln als auch in beliebiger Kombination wesentlich für die Erfindung in ihren verschiedenen Ausführungsformen sein. The features disclosed in the foregoing description, in the claims and the figures may be essential to the invention in its various embodiments both individually and in any combination.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 S chubumluft ventil 1 S chubumluft valve
3 Hauptventil  3 main valve
5, 5‘ Pilotventil  5, 5 'pilot valve
7 Fluideingang  7 fluid inlet
9, 9‘ Fluidausgang  9, 9 'fluid outlet
11, l l‘, 11“ Leitung  11, l l ', 11 "pipe
13, 13* Ventilsitz 13, 13 * Valve seat
15. 15‘, 15“ Leitung  15. 15 ', 15 "pipe
17 Steuerraum 17 control room
19, 19* Leitung 19, 19 * Head
21, 21‘ Antrieb 21, 21 'drive
23 Membranwirkfläche  23 Membranwirkwirkfläche
25, 25' Ventilglied  25, 25 'valve member
27, 27‘, 27“ Ventilsitz  27, 27 ', 27 "valve seat
29, 29‘, 29“ Federelement 29, 29 ', 29 "spring element
31, 31' Ventilglied 31, 31 'valve member
33, 33' Anschluss  33, 33 'connection
35, 35' Spulenelement  35, 35 'coil element
37, 37' Anker  37, 37 'anchor
39 Federelement  39 spring element
4L Einzelspule  4L single coil
43' Einzelspule  43 'single coil
45' Permanentmagnet  45 'permanent magnet
47 V entilgliedgehäuse  47 valve housing
49, 49' Dichtmittel  49, 49 'sealant
A, A' Achse  A, A 'axis

Claims

Schiitzanspriiche Schiitzanspriiche
1. Elektromagnetisches Ventil (5), insbesondere Pilotventil (5) zur Steuerung eines Hauptventils (3), wie eines vorgesteuerten Ventils innerhalb eines 1. Electromagnetic valve (5), in particular pilot valve (5) for controlling a main valve (3), such as a pilot operated valve within a
Schubumluftventils, umfassend zumindest ein mit zumindest einem entlang einer ersten Achse (A,A‘) bewegbaren Anker (37,37‘) in Wirkverbindung stehendes Ventilglied (31, 3G) und zumindest ein Spulenelement (35, 35‘, 4G, 43‘), wobei mittels eine Bestromung des Spulenelementes (35, 35‘, 4G, 43‘) eine Bewegung des Ankers (37, 37‘) und/oder des Ventilgliedes (31, 3 G) erreichbar ist, gekennzeichnet durch  Recirculation valve, comprising at least one valve member (31, 3G) operatively connected to at least one armature (37, 37 ') movable along a first axis (A, A') and at least one coil element (35, 35 ', 4G, 43') , by means of an energization of the coil element (35, 35 ', 4G, 43'), a movement of the armature (37, 37 ') and / or the valve member (31, 3 G) can be reached, characterized by
zumindest ein Sensierelement mittels dem zumindest ein Parameter des  at least one sensing element by means of the at least one parameter of
Spulenelementes (35, 35‘, 4G, 43‘) erfassbar ist, wobei mittels des Parameters die Position des Ankers (37, 37‘) und/oder des Ventilgliedes (31, 3l‘) bestimmbar ist.  Coil element (35, 35 ', 4G, 43') can be detected, wherein by means of the parameter, the position of the armature (37, 37 ') and / or the valve member (31, 3l') can be determined.
2. Elektromagnetisches Ventil nach Anspruch 1, dadurch gekennzeichnet, dass 2. Electromagnetic valve according to claim 1, characterized in that
das Spulenelement (35, 35‘, 4G, 43‘) zumindest bereichs weise, vorzugsweise zumindest bereichs weise koaxial, die erste Achse (A, A‘) und/oder den Anker (37, 37‘) umgibt.  the coil element (35, 35 ', 4G, 43') at least area wise, preferably at least partially coaxially, the first axis (A, A ') and / or the armature (37, 37') surrounds.
3. Elektromagnetisches Ventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Spulenelement (35‘) zumindest zwei Einzelspulen (4G, 43‘), vorzugsweise genau zwei Einzelspulen( 4l‘, 43‘), umfasst, wobei vorzugsweise die Einzelspulen (41‘, 43‘) entlang der ersten Achse (A‘) hintereinander angeordnet sind und/oder zumindest eine Einzelspule (41*, 43‘), insbesondere alle Einzelspulen (41 *, 43‘), vorzugsweise zumindest bereichsweise, insbesondere bereichsweise koaxial, die erste Achse (A‘) und/oder den Anker (37‘) umgibt bzw. umgeben. 3. Electromagnetic valve according to claim 1 or 2, characterized in that the coil element (35 ') at least two individual coils (4G, 43'), preferably exactly two individual coils (4l ', 43') comprises, wherein preferably the individual coils (41 ', 43') are arranged one behind the other along the first axis (A ') and / or at least one individual coil (41 *, 43'), in particular all individual coils (41 * , 43 '), preferably at least regionally, in particular in regions coaxially first axis (A ') and / or the armature (37') surrounds or surround.
4. Elektromagnetisches Ventil nach Anspruch 3, dadurch gekennzeichnet, dass 4. Electromagnetic valve according to claim 3, characterized in that
zumindest ein Permanentmagnet (45‘) bezüglich der ersten Achse (A‘) zwischen zwei Einzelspulen (4G, 43‘) angeordnet ist, wobei vorzugsweise der  at least one permanent magnet (45 ') with respect to the first axis (A') between two individual coils (4G, 43 ') is arranged, wherein preferably the
Permanentmagnet (45‘) zumindest bereichsweise als Ringmagnet ausgebildet ist, insbesondere zumindest bereichsweise, vorzugsweise zumindest bereichsweise koaxial die erste Achse (A‘) und/oder den Anker (37‘) umgibt. Permanent magnet (45 ') is at least partially formed as a ring magnet, in particular at least partially, preferably at least partially coaxially surrounding the first axis (A') and / or the armature (37 ').
5. Elektromagnetisches Ventil nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Sensierelement zumindest einen ersten Parameter einer ersten Einzelspule (4G) und/oder zumindest einen zweiten Parameter einer zweiten Einzelspule (43‘) erfasst, wobei vorzugsweise der Permanentmagnet (45‘) zwischen der ersten Einzelspule (4G) und der zweiten Einzelspule (43‘) angeordnet ist. 5. Electromagnetic valve according to claim 3 or 4, characterized in that the sensing element detects at least a first parameter of a first single coil (4G) and / or at least a second parameter of a second single coil (43 '), wherein preferably the permanent magnet (45') between the first single coil (4G) and the second single coil (43 ') is arranged.
6. Elektromagnetisches Ventil nach einem der vorangehenden Ansprüche, 6. Electromagnetic valve according to one of the preceding claims,
gekennzeichnet durch  marked by
zumindest eine Steuer- und/oder Regeleinrichtung, wobei die Steuer- und/oder Regeleinrichtung mit der Sensiereinrichtung, dem Spulenelement (35, 35‘), und/oder der Einzelspule (4G, 43‘), insbesondere der ersten Einzelspule (4G) und/oder der zweiten Einzelspule (43‘) in Wirkverbindung steht und/oder der Anker (37, 37‘) und/oder das Ventilglied (31, 3 G), vorzugsweise mittels der Steuer- und/oder Regeleinrichtung, in zumindest zwei unterschiedliche Positionen entlang der ersten Achse (A, A‘) verfahrbar ist.  at least one control and / or regulating device, wherein the control and / or regulating device with the sensing device, the coil element (35, 35 '), and / or the single coil (4G, 43'), in particular the first single coil (4G) and / or the second single coil (43 ') is in operative connection and / or the armature (37, 37') and / or the valve member (31, 3 G), preferably by means of the control and / or regulating device, in at least two different positions along the first axis (A, A ') is movable.
7. Elektromagnetisches Ventil nach Anspruch 6, dadurch gekennzeichnet, dass 7. Electromagnetic valve according to claim 6, characterized in that
das Verfahren des Ankers (37, 37‘) und/oder des Ventilglieds (31, 3 G) durch Ansteuerung des Spulenelementes (35, 35‘), insbesondere der Einzelspule (4G, 43‘), vorzugsweise einer Mehrzahl, vorzugsweise aller Einzelspulen (41‘, 43‘), in  the method of the armature (37, 37 ') and / or the valve member (31, 3 G) by controlling the coil element (35, 35'), in particular the single coil (4G, 43 '), preferably a plurality, preferably all individual coils ( 41 ', 43'), in
Abhängigkeit von einem, vorzugsweise der Steuer- und/oder Regeleinrichtung mittels zumindest einem Soll-Wert Eingang zugeführten, Soll-Wert erfolgt.  Depending on a, preferably the control and / or regulating device by means of at least one setpoint input input supplied, target value takes place.
8. Elektromagnetisches Ventil nach Anspruch 7, dadurch gekennzeichnet, dass 8. Electromagnetic valve according to claim 7, characterized in that
mittels der Steuer- und/oder Regeleinrichtung ein Vergleich zwischen dem Soll- Wert und einer mittels der Sensiereinrichtung erfassten Ist-Position des Ankers und/oder des Ventilglieds durchführbar ist.  by means of the control and / or regulating device, a comparison between the desired value and an actual position of the armature and / or of the valve member detected by means of the sensing device can be carried out.
9. Elektromagnetisches Ventil nach einem der Ansprüche 6 bis 8, dadurch 9. Electromagnetic valve according to one of claims 6 to 8, characterized
gekennzeichnet, dass  marked that
eine erste Position des Ankers (37, 37‘) und/oder des Ventilglieds (31, 3G) einer Geschlossenposition entspricht, in der vorzugsweise das Ventilglied (31, 3 G) auf zumindest einem Ventilsitz (13, 13‘), insbesondere zum Verschließen einer  a first position of the armature (37, 37 ') and / or the valve member (31, 3G) corresponds to a closed position, in which preferably the valve member (31, 3 G) on at least one valve seat (13, 13'), in particular for closing one
Verbindung zwischen zumindest einem Ventileingang (11) und zumindest einem Ventilausgang (15), vorzugsweise dichtend, aufliegt und/oder eine zweite Position des Ankers (37, 37‘) und/oder des Ventilgliedes (31, 3G) einer Offenposition entspricht, in der vorzugsweise das Ventilglied (31, 3 G) zumindest bereichs weise von dem Ventilsitz (13, l3‘) abgehoben ist, insbesondere zum Öffnen einer Verbindung zwischen dem Ventileingang (11) und dem Ventilausgang (15). Connection between at least one valve inlet (11) and at least one Valve outlet (15), preferably sealing, rests and / or a second position of the armature (37, 37 ') and / or the valve member (31, 3G) corresponds to an open position, in which preferably the valve member (31, 3 G) at least area example of the valve seat (13, l3 ') is lifted, in particular for opening a connection between the valve inlet (11) and the valve outlet (15).
10. Elektromagnetisches Ventil nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass 10. Electromagnetic valve according to one of the preceding claims, characterized in that
der Parameter, insbesondere der erste Parameter und/oder der zweite Parameter, zumindest eine Induktivität, zumindest einen ohmschen Widerstand, und/oder zumindest eine Impedanz, des Spulenelementes (35, 35‘) und/oder der Einzelspule (41*, 43‘), vorzugweise der ersten Einzelspule (4G) und/oder der zweiten  the parameter, in particular the first parameter and / or the second parameter, at least one inductance, at least one ohmic resistance, and / or at least one impedance of the coil element (35, 35 ') and / or the individual coil (41 *, 43') , preferably the first single coil (4G) and / or the second
Einzelspule (43‘), umfasst.  Single coil (43 ') includes.
11. Schubumluftventil (1) umfassend zumindest ein, vorzugsweise pneumatisches und/der hydraulisches, Hauptventil (3) und zumindest ein Pilotventil (5, 5‘) zur Steuerung des Hauptventils (3), wobei das Pilotventil in Form eines 11. diverter valve (1) comprising at least one, preferably pneumatic and / or hydraulic, main valve (3) and at least one pilot valve (5, 5 ') for controlling the main valve (3), wherein the pilot valve in the form of a
elektromagnetischen Ventils (5, 5‘) nach einem der vorangehenden Ansprüche ausgebildet ist.  electromagnetic valve (5, 5 ') is formed according to one of the preceding claims.
EP19717855.1A 2018-04-11 2019-04-11 Electromagnetic valve and air diverter valve Withdrawn EP3775641A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202018101968.6U DE202018101968U1 (en) 2018-04-11 2018-04-11 Electromagnetic valve and diverter valve
PCT/EP2019/059264 WO2019197533A1 (en) 2018-04-11 2019-04-11 Electromagnetic valve and air diverter valve

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US (1) US20210025517A1 (en)
EP (1) EP3775641A1 (en)
CN (1) CN112236610A (en)
DE (1) DE202018101968U1 (en)
WO (1) WO2019197533A1 (en)

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CN113757388A (en) * 2021-09-08 2021-12-07 安徽华东光电技术研究所有限公司 Pilot-operated high-pressure self-locking valve
US11608907B1 (en) * 2022-08-19 2023-03-21 Pipl Limited Solenoid valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789876A (en) * 1973-04-06 1974-02-05 Parker Hannifin Corp Solenoid valve with electronic position indicator
DE19631909A1 (en) * 1995-08-08 1997-02-13 Fev Motorentech Gmbh & Co Kg Adjustment of null position of piston engine valve actuator armature - has adjustment of armature element position while measuring and comparing inductance values of electromagnets
DE10141764A1 (en) * 2000-10-20 2002-06-27 Micro Epsilon Messtechnik Device and method for detecting the position of an object
DE102005041873A1 (en) * 2005-08-23 2007-03-08 Linde Ag Method for determining position of electromagnet armature, involves ascertaining the inductance of electromagnet
US10253900B2 (en) * 2014-05-27 2019-04-09 Continental Automotive Systems, Inc. Latching valve assembly having position sensing
DE102016200118A1 (en) * 2016-01-08 2017-07-13 Continental Teves Ag & Co. Ohg Method for determining the opening flow of an analog controlled valve and pressure control device
DE102016002677A1 (en) * 2016-03-05 2017-09-07 Wabco Gmbh Bistable solenoid valve device and method for determining an armature position of a bistable solenoid valve
DE202016104363U1 (en) * 2016-08-08 2017-11-10 Woco Industrietechnik Gmbh Valve

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US20210025517A1 (en) 2021-01-28
DE202018101968U1 (en) 2019-07-12
WO2019197533A1 (en) 2019-10-17

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