A solenoid valve unit is described for shutting off or enabling a throughflow of a medium along a hollow duct, which flows under application of pressure along the hollow duct, having at least one first magnet unit which is fixedly arranged along the hollow duct, which is implemented in the form of a
A solenoid valve unit is described for shutting off or enabling a throughflow of a medium along a hollow duct, which flows under application of pressure along the hollow duct, having at least one first magnet unit which is fixedly arranged along the hollow duct, which is implemented in the form of a hollow cylinder and is arranged in an axial section along the hollow duct in such a way that the first magnet unit radially completely surrounds the hollow duct and has a flow opening, which is circular in cross-section, on its downstream end, as well as a second magnet unit, which is mounted so it is movable to the first unit and is implemented as a ball, whose ball diameter is greater than the flow opening diameter of the first magnet unit and which, on account of an attractive magnetic force prevailing between both magnet units, can be brought into indirect or direct contact with the first magnet unit and seals the hollow duct in a fluid-tight manner, while the medium loads the first magnet unit under application of pressure opposite to the action direction of the magnetic force. A contour surface, which is angled in relation to a plane defined by the flow opening and surrounds the flow opening, and along which the spherical second magnet unit can be deflected axially and radially relative to the flow opening, indirectly or directly adjoins the flow opening, which is circular in cross-section.
대표청구항▼
1. A solenoid valve for shutting off or enabling a flow of a medium along a hollow duct in response to application of pressure along the hollow duct, comprising: at least one first hollow cylindrical magnet, including a flow opening, a circular cross-section on a downstream end thereof, fixed along
1. A solenoid valve for shutting off or enabling a flow of a medium along a hollow duct in response to application of pressure along the hollow duct, comprising: at least one first hollow cylindrical magnet, including a flow opening, a circular cross-section on a downstream end thereof, fixed along the hollow duct in an axial section and radially surrounding the hollow duct and a contour surface which is angled relative to a plane intersecting and surrounding the flow opening;a second magnet comprising a ball having a diameter greater than a diameter of the flow opening which is held in direct contact with the contour surface or with the first magnet or spaced apart from the first magnet by an attractive magnetic force between the magnets;one of either means for applying a variable pressure to the medium which acts in a direction opposite to an action of the attractive magnetic force or means for varying the attractive magnetic force between the magnets; and whereinwhen the application of the variable pressure applied to the medium exceeds the attractive magnetic force, the ball is deflected away from sealing the hollow duct to unseal the hollow duct; andthe at least one first hollow cylindrical magnet includes means for magnetically attracting the ball; and whereinthe at least one first hollow cylindrical magnet and the contour surface or the means for varying the magnetic attractive force between the magnets are configured so that the ball when moving from a closed position of the valve to an open position of the valve is held in contact with the contour surface by the magnetic attractive force. 2. The solenoid valve according to claim 1, wherein the contour surface is funnel shaped, surrounds the flow opening and widens in the flow direction. 3. The solenoid valve according to claim 2, comprising: an annular surface section within the plane which radially adjoins the flow opening. 4. The solenoid valve according to claim 1, comprising: an annular surface section within the plane radially adjoins the flow opening. 5. The solenoid valve according to claim 1, wherein: the contour surface is part of the first magnet. 6. The solenoid valve according to claim 5, wherein: the spacer comprises a ferromagnetic material. 7. The solenoid according to claim 5, wherein: the spacer comprises a non-ferromagnetic material. 8. The solenoid valve according to claim 1, wherein: the contour surface is part of a spacer which spaces the ball from the first magnet and axially adjoins the first magnet. 9. The solenoid valve according to claim 1, wherein: the first and second magnets either comprise a permanent magnetic material, or one of the two magnets comprises a permanent-magnetic material and another of the magnets comprises a ferromagnetic material. 10. The solenoid valve according to claim 1, wherein: the circular flow opening on the downstream end of the first magnet is surrounded by a chamfered edge. 11. The solenoid valve unit according to claim 1, comprising: a sealing layer applied at least to an area of the circular flow opening of the first magnet which engages the ball. 12. The solenoid valve according to claim 1 comprising: a sealing layer applied to the second magnet. 13. The solenoid valve according to claim 1, wherein: the second magnet comprises a magnetic film. 14. The solenoid valve according to claim 1 comprising: a closure valve inside a dispenser for dispensing a dose of a medium from a reservoir. 15. The solenoid valve according to claim 14, wherein: the dispensing unit is removably connected to the reservoir. 16. The solenoid valve according to claim 14, wherein: the dispenser comprises a cover element having a screw or plug closure for a fluid-tight connection to the reservoir and the reservoir comprises one of a tube, can, bottle, or bag. 17. The solenoid valve according to claim 14, wherein: the dispenser is permanently connected to the reservoir comprising one of a tube, can, bottle, or bag. 18. The solenoid valve according to claim 14, wherein: the reservoir comprises a wall which is deformable by an external force action to provide dispensing of the dose. 19. The solenoid valve according to claim 14 for mixing at least two media, comprising: at least two dispensers of the media with each dispenser including the solenoid valve with each solenoid valve having a different valve opening force; and whereinthe reservoir is connected to a shared delivery pressure line providing a specifiable delivery pressure of each media; andthe at least two dispensing units are connected to a shared manifold line in which dispensing of the media from each dispenser occurs. 20. The solenoid valve according to claim 1 comprising a closure valve inside a unit for a dosed filling of a volume. 21. The solenoid valve according to claim 20, wherein: the unit provides dosed ventilation of the volume of a reservoir. 22. A plurality of solenoid valves according to the solenoid valve of claim 1 comprising: a plurality of through ducts which penetrate a carrier substrate, are distributed in the carrier substrate and in which individual ones of the solenoid valves are housed in different ducts; andthe carrier substrate covers a reservoir in which the medium is to be stored to which pressure can be applied to dispense the medium. 23. A plurality of solenoid valves according to claim 22, wherein: the through ducts are in an array along the carrier substrate. 24. The plurality of solenoid valves according to claim 23, wherein: the carrier substrate surface facing away from the reservoir provides a sliding or rolling surface for at least one sliding or rolling body. 25. The plurality of solenoid valves according to claim 22, wherein: the carrier substrate surface facing away from the reservoir provides a sliding or rolling surface for at least one sliding or rolling body. 26. A plurality of solenoid valves according to the solenoid valve of claim 1 comprising: a plurality of through ducts which penetrate a carrier substrate, are distributed in the carrier substrate and in which individual ones of the solenoid valves are housed in different ducts;the carrier substrate covers a reservoir in which a medium is to be stored to which pressure can be applied to dispense the medium; andat least one magnet providing an external magnetic field, the at least one magnet being guided along a side of the carrier substrate, which faces away from the reservoir for opening the solenoid valves and at least temporarily reduces a magnetic retaining force between the first and second magnets of each one of the solenoid valves. 27. A plurality of solenoid valves according to claim 26, wherein: the through ducts are in an array along the carrier substrate. 28. The plurality of solenoid valves according to claim 26, wherein: the carrier substrate surface facing away from the reservoir provides a sliding or rolling surface for at least one sliding or rolling body.
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