WO2016184512A1

WO2016184512A1 - Valve device

Info

Publication number: WO2016184512A1
Application number: PCT/EP2015/061106
Authority: WO
Inventors: Georg Berner; Jens FÖRSTER; Veronica NICOLINI; Laura SAWITZKI; Elvira STEGMEYER
Original assignee: Festo Ag & Co. Kg
Priority date: 2015-05-20
Filing date: 2015-05-20
Publication date: 2016-11-24
Also published as: DE112015006241A5; DE112015006241B4

Abstract

The invention relates to a valve device (10), comprising: a duct (2) for guiding a fluid (3); a valve body (5) which is arranged in the duct; a first coupling arrangement (4) which is assigned to the duct, and a second coupling arrangement (6) which is assigned to the valve body, wherein one of the two coupling arrangements comprises a magnet arrangement (12), and the other of the two coupling arrangements comprises a superconductor arrangement (13), and the magnet arrangement and the superconductor arrangement are coupled to one another in a manner which transmits force contactlessly, in order to ensure pivotably movable mounting of the valve body with respect to the duct; a drive means for providing (in particular, contactlessly) an actuating force to the valve body, in order to pivot the latter relative to the duct between a first position and a second position and, as a result, to influence a free cross section of the duct.

Description

FESTO AG & Co. KG, Ruiter Strasse 82, D-73734 Esslingen

valve device

The invention relates to a valve device having a channel and a valve body which is designed to influence a free cross section of the channel by a relative movement of the valve body to the channel.

Valve devices are known from the prior art, in which a valve body located in the channel is mechanically connected to a drive means arranged outside the channel and can be moved by this relative to the channel.

It is an object of the present invention to provide an improved valve device which can be used flexibly.

This object is achieved according to the invention by a valve device comprising a channel for guiding a fluid, a valve body disposed in the channel, a first coupling arrangement associated with the channel, and a second coupling arrangement associated with the valve body. One of the two coupling arrangements comprises a magnet arrangement and the other of the two coupling arrangements comprises a superconductor arrangement. The magnet arrangement and the superconductor arrangement are contactlessly coupled to one another in a force-transmitting manner in order to provide a pivotable mounting of the valve body. pers opposite the channel. The valve device further comprises a drive means for, in particular contactless, providing an actuating force on the valve body to pivot relative to the channel between a first position and a second position and thereby to influence a free cross section of the channel. Preferably, the valve body is pivotable between the first and the second position in any number of other positions.

According to the present invention, the valve body is thus firstly supported by a contactless force-transmitting coupling pivotally mounted in the channel and secondly by a pivoting between two or more different positions. As a result of the combination according to the invention of these two aspects, as explained in greater detail below, the advantage in particular that the valve device can be used flexibly is achieved.

First, a contactless force-transmitting coupling is achieved in the valve device according to the invention on the interaction between a magnet assembly and a superconductor and the resulting magnetic interactions. Because of this contactless force-transmitting coupling of the coupling assemblies and the resulting magnetic bearing of the valve body, it is not necessary in the valve device according to the invention to provide a mechanical bearing for the valve body, and thus it is not necessary to provide appropriate fasteners and seals on the inner wall of the channel. Therefore, the channel of the valve device according to the invention does not require a specially designed inner wall. Furthermore, it is possible to influence the free cross section of the channel due to the non-contact introduced from the outside pivoting of the valve body, without the valve body would have to be pushed out of the channel in one of the positions as in a slide valve. Thus, the valve body can remain completely in the channel in both, preferably in all, positions. In contrast, if a pure displacement of the valve body is used to influence the free cross section, a special chamber must be provided in the rule, in which the valve body can be moved in one of the two positions. Such a chamber is not necessarily required in the valve body according to the invention due to the claimed pivoting.

As a result, therefore, can be used by the inventive combination of the two discussed aspects - namely, that the valve body is pivotally supported by a non-contact force transmitting coupling, and by pivoting different positions occupies - a channel whose channel inner wall must be configured in any special way. As a result, the production of the channel of the valve device according to the invention can be facilitated. Furthermore, the valve body can thereby be used very flexibly. For example, by incorporating the valve body into an existing channel system, it becomes possible to realize a valve device at a desired portion of the channel system without breaking up the existing channel system and / or without additional work on the channel system such as drilling or the like. Namely, since there are no special conditions for the passage of the valve apparatus according to the present invention, it is possible to simply form a passage portion of an existing passage system as the Use channel of the valve device. For this purpose, the first coupling arrangement and the drive means can be mounted on the outside of the channel section, and the valve body can then simply be inserted into the channel system, so that it is driven by the fluid flow and / or gravity through the channel system up to the channel section the coupling assembly moves, where it is then held by the contactless force-transmitting coupling between the magnet assembly and superconductor assembly and pivotally mounted. Consequently, the valve device according to the invention is particularly flexible.

In addition, the valve device according to the invention, in contrast to conventional valve devices on no mechanical bearing, such as a sliding or rolling bearings, and thus achieves the advantages that on the one hand less or no wear occurs, and on the other, there is no mechanical bearing in the channel is present, no sealing of such a mechanical bearing is required to prevent leakage of the fluid flowing through the channel.

The claimed pivotal mounting of the valve body with respect to the channel can be achieved by a magnetic interaction between the two coupling arrangements, which excludes at least two translational degrees of freedom and two rotational degrees of freedom. Expediently, at least one translational degree of freedom and / or a rotational degree of freedom can also be excluded by supporting the valve body on the channel. It is crucial that a pivoting of the valve body relative to the channel is made possible by the storage of the valve body; that is, between the valve body and the channel allows a rotational degree of freedom is, so that the valve body can be pivoted between the various positions.

The claimed contactless force-transmitting coupling between the magnet arrangement and the superconductor arrangement can be achieved, for example, by using the so-called flux pinning or flux-anchoring effect in a superconductor. In this effect, a certain magnetic field geometry / flux distribution in a superconductor is as a rule programmed or stored such that the superconductor then preferably occupies the position relative to a magnetic field in which the geometry of the magnetic field penetrating the superconductor most closely matches the magnetic field geometry stored in the superconductor. In particular, superconductors of the second kind, such as e.g. ceramic high-temperature superconductors. Examples of such superconductors are YBaCuO (yttrium-barium-copper oxides) and BiSrCaCuO (bismuth-strontium-calcium-copper oxides).

The storage of the magnetic field geometry in the superconductor arrangement can be effected by first arranging the magnet in the desired spatial position relative to the superconductor arrangement, the superconducting teranordnung having a temperature above its critical temperature at this time. Subsequently, the superconductor arrangement is cooled down to its transition temperature or below, so that the magnetic field provided by the magnet arrangement is stored in the superconductor arrangement mutatis mutandis. While maintaining the transition temperature for the superconductor arrangement, a change in the spatial position of the magnet arrangement relative to the superconductor arrangement results in reaction forces, so that a desired spatial Relationship between the magnet assembly and the superconductor assembly can be maintained contactless.

Conveniently, the first coupling arrangement, which is assigned to the channel, be attached to the outside of this. The first coupling arrangement can, depending on the requirement, be mounted movably or firmly on the outside of the channel. Alternatively, it is of course also possible that the first coupling arrangement is embedded in the wall of the channel, so that it is arranged as close as possible to the valve body, so as to achieve a very strong coupling between the two coupling arrangements.

The second coupling arrangement associated with the valve body may be attached thereto. Alternatively, the second coupling arrangement and the valve body may also be formed as a one-piece element. Furthermore, of course, the entire valve body can act as the second coupling arrangement.

The influence of the free cross section of the channel can be made such that the free cross section at a

Swiveling the valve body is increased or decreased from one to another position. The free cross section may in particular be a sectional area of the channel, which is normal to the flow direction of the fluid.

Preferably, the device according to the invention can also be designed as a filter and valve device. In this case, the valve body may be formed as a filter body and / or corresponding filter elements, such as a sieve or a sieve-like structure include. Additionally or alternatively, filter functionality may also be provided by having the valve body in one or more of the Positions is kept at a predetermined distance to the channel inner wall.

Advantageous developments of the invention are the subject of the dependent claims.

In one embodiment of the invention, it is provided that the first and second coupling arrangement form a pivot bearing with an axis of rotation for the valve body, so that the

Pivoting of the valve body takes place in a relative movement of the coupling arrangements to each other about the axis of rotation.

Expediently, for this purpose, a substantially circularly symmetrical magnetic field geometry is stored or programmed in the superconductor arrangement, and a corresponding circularly symmetrical magnetic field is provided by the magnet arrangement. If the magnet arrangement and the superconductor arrangement are aligned with one another in such a way that the magnetic field provided and the stored or programmed magnetic field geometry are essentially coaxial with one another, then the superconductor arrangement essentially always experiences the same magnetic field even when rotated about the axis of symmetry of the stored magnetic field geometry or magnetic field relative to the stored magnetic field geometry. Accordingly, such a rotation is prevented by no significant forces caused by the coupling between the magnet arrangement and the superconductor arrangement. Consequently, a rotary bearing can be provided whose axis of rotation substantially corresponds to the axis of symmetry of the stored magnetic field geometry or of the magnetic field provided.

In a further embodiment of the invention it is provided that the second coupling arrangement as the magnet arrangement at least a circularly symmetrical permanent magnet and / or at least a section of a circularly symmetric permanent magnet.

By means of such magnet arrangements, a substantially circularly symmetrical magnetic field can be provided in a simple manner, by means of which, for example, the above-discussed pivotal mounting between first and second coupling arrangement can be achieved. For example, one or more ring magnets and / or cut-outs of ring magnets can be used for this purpose. Further, in this embodiment, the magnet assembly is associated with the valve body, and thus the superconductor assembly is associated with the channel. This is advantageous because the superconductor assembly can be cooled more easily outside the channel.

In a further embodiment of the invention, it is provided that the first coupling arrangement comprises, as the magnet arrangement, an electromagnet arrangement and / or a permanent magnet arrangement.

In this embodiment, the magnet assembly is now associated with the channel, and thus the superconductor assembly the valve body. This is particularly advantageous when the fluid flowing through the channel has such a low temperature that thereby the cooling of the superconductor arrangement is ensured at or below the critical temperature required for the superconducting state. Furthermore, when the magnet arrangement is designed as an electromagnet arrangement, a control of the provided magnetic field can take place, as a result of which the bearing of the valve body can be actively adjusted. In a further embodiment of the invention it is provided that the drive means is adapted to provide a magnetic field at least partially penetrating the valve body in response to a control signal.

This embodiment is particularly advantageous when a pivot bearing is provided between the two coupling arrangements as discussed above. Since in this case the valve body can rotate relative to the first coupling arrangement, it is necessary to provide a torque to the valve body in order to effect a desired pivoting of the valve body. Preferably, this provision takes place without contact, for example in that the drive means is adapted to provide a magnetic field which causes a magnetic interaction with at least one component of the valve body, so that that for the

Swiveling required torque can be provided to the valve body.

In a further embodiment of the invention it is provided that at least one component associated with the valve body has magnetic properties, so that the magnetic field provided by the drive means exerts the actuating force on the valve body.

For example, here the valve body or the second coupling arrangement comprise the component with the magnetic properties.

In a further embodiment of the invention it is provided that the first coupling arrangement and the second coupling arrangement are rotatably coupled to each other, and the drive means are arranged, in response to a control signal the pivot first coupling assembly relative to the channel, so as to cause the pivoting of the valve body.

In contrast to the above-discussed embodiments of the invention, in which the first and the second coupling arrangement act as a pivot bearing, the first and the second coupling arrangement are rotatably coupled together in this embodiment. For example, can be excluded by the coupling all degrees of freedom between the coupling arrangements. For this purpose, the superconductor arrangement is preferably designed such that there is a substantially rigid coupling between the superconductor arrangement and the magnet arrangement. This substantially rigid coupling is achieved by a suitable magnetization of the at least one magnet arrangement and a corresponding storage of the magnetic field geometry of the magnet arrangement in the superconductor. Preferably, the magnet arrangement provides a magnetic field which is uniform in none of the three spatial directions, so that when storing this magnetic field geometry in the superconductor, which can take place during cooling of the superconductor at or below its critical temperature, a clear spatial association between the magnet assembly and the superconductor assembly is achieved.

This makes it possible to adjust the position of the valve body directly via a change in position of the first coupling arrangement. In particular, it is possible to pivot the valve body directly via a pivoting of the first coupling arrangement. For example, the drive means may comprise a rotary motor which is connected via a shaft to the first coupling arrangement so as to pivot the first coupling arrangement relative to the channel, which in turn leads to a pivoting of the second coupling arrangement and thus to a ner position change of the valve body relative to the channel leads. This procedure has the advantage that no further magnetic field is required to effect the pivoting movement of the valve body.

In a further embodiment of the invention, it is provided that the superconductor arrangement comprises at least one plate-shaped superconductor, which is arranged at least partially within a magnetic field provided by the magnet arrangement.

Plate-shaped superconductors are well suited to provide non-contact, fixed coupling to a magnet assembly by means of the flux-pinning effect discussed above. In this case, the plate-shaped superconductor is preferably arranged in such a way that it penetrates the magnetic field of the magnet arrangement normal to the plane of the plate.

In a further embodiment of the invention it is provided that the valve body rests in the first position and / or the second position on the channel, so that the valve body is stably supported in the first position and / or the second position.

In this way, a very simple stable storage of the valve body in the first and / or second position can be achieved. In particular, in the embodiment discussed above, in which the two coupling assemblies form a pivot bearing, and the drive means is adapted to apply a torque about the axis of rotation on the valve body, by a concern or supporting the valve body on the channel a stable mounting of the valve body in the corresponding position. In a further embodiment of the invention it is provided that the valve body comprises at least one sealing lip, which rests in the first and / or second position on the channel, so that the channel is closed in one of the two positions.

Advantageous embodiments of the invention are illustrated in the drawing. It shows

1 is a schematic plan view of a first embodiment of a valve device, wherein a magnet assembly is associated with the valve body, a first and a second coupling arrangement form a pivot bearing and the valve body is in a first position relative to the channel,

FIG. 2 shows a schematic plan view of the first embodiment of a valve device shown in FIG. 1, the valve body being in a second position relative to the channel,

FIG. 3 shows a schematic side view of the first embodiment of a valve device shown in FIG. 1,

Figure 4 is a schematic side view of a second

Embodiment of a valve device, wherein the magnet assembly is arranged on the outside of the channel and the first and second coupling arrangement form a pivot bearing,

Figure 5 is a schematic plan view of a third embodiment of a valve device, wherein the first and second coupling arrangement are non-rotatably coupled to each other,

FIG. 6 shows a schematic side view of the third embodiment of a valve device shown in FIG. 5,

7 shows a schematic side view of a fourth embodiment of a valve device, wherein the valve body comprises sealing lips and the superconductor arrangement is embedded in the channel wall,

Figure 8 is a schematic plan view of the fourth embodiment of a valve device shown in Figure 7.

In the following description of the figures, identical designations are used for functionally identical components of the illustrated embodiments, wherein a multiple description of functionally identical components is dispensed with.

FIGS. 1 to 3 schematically show a first embodiment of a valve device 10 according to the invention, which comprises a section of an exemplary tubular channel 2 and a valve body 5 arranged in the channel 2. FIGS. 1 and 2 show a plan view of the valve device 10, while FIG. 3 shows a side view of the valve device 10.

In the figures, the valve body 5 is shown by way of example in an elongated cuboid shape. Of course, the valve body 5 but also have any other shape with which by means of a pivoting of the valve body 5 in the channel second an influence on a free cross section of the channel 2 is possible. For example, the valve body 5 may be formed in any shape different from a perfect sphere.

The valve body 5 can be moved from a first position to a second position by pivoting about the graphically illustrated, physically non-existent rotation axis. The axis of rotation 8 in this example is perpendicular to a fluid stream 3, but it can also be oriented differently. Preferably, the orientation of the rotation axis 8 is different from the direction of the fluid flow 3. FIG. 1 shows the valve body 5 in an exemplary first position, in which the longitudinal side of the valve body 5 is aligned in the direction of the fluid flow 3 so as to maximize the free cross section of the channel 2 normal to the fluid flow 3. FIG. 2 shows the valve body 5 in his second position. In this second position, the longitudinal side of the valve body 5 is no longer aligned in the direction of the fluid flow 3, so that the free cross section of the channel 2 is now smaller than in the first position. As shown in Figure 2, the valve body 5 may rest in the second position on the channel 2, so that it is stably stored. Alternatively, the valve body 5 may be kept spaced from the channel 2 in the second position. It is also possible that the longitudinal side of the valve body 5 is shorter than the longest dimension or the diameter of the channel cross-section, so that the valve body 5 can also assume a position in which the longitudinal side of the valve body 5 is perpendicular to the direction of the fluid flow 3.

In the figures 1 to 3, the channel 2 is shown in elongated tubular form. The cross section of the channel 2, not shown, can be designed according to the application. For example, the cross section of the channel 2 may be circular, oval, or rectangular. Of course, the channel 2 may be formed in any other form, in which it is possible to influence by means of a pivoting of the valve body 5, a free cross section of the channel 2.

The channel 2 is adapted to guide a fluid 3. In FIG. 1, an exemplary flow direction of the fluid 3 is indicated by the arrows arranged at the reference numeral 3.

As shown in FIG. 3, the valve body 5 can comprise the second coupling arrangement 6 and can have a number of magnet arrangements 12. In the embodiment shown, two magnet arrangements 12 are provided; expediently, however, only one magnet arrangement 12 or more than two magnet arrangements can be provided. Preferably, the magnet assemblies 12 may be disposed on end faces of the valve body 5 so as to minimize the distance between the magnet assemblies 12 and the superconductor assemblies 13 formed as a first coupling arrangement, as shown in FIG. To provide a substantially circularly symmetrical magnetic field or a section thereof, the magnet arrangements 12 can consist of concentrically arranged cutouts of circularly symmetrical permanent magnets, as shown in FIG. For example, corresponding cutouts of ring magnets can be used here. Of course, whole ring magnets can be used instead of the cutouts shown. If a plurality of magnet arrangements 12 are provided, then these can preferably be arranged coaxially with respect to one another, so that the axes of symmetry of the respective magnet arrangements 12 are substantially horizontal. Chen lie on a straight line, so that the totality of magnet assemblies 12 has a substantially circularly symmetric characteristic and thus well suited to form together with one or more superconductor 13 a pivot bearing. In the present embodiment, the axes of symmetry of the two magnet arrangements 12 lie on a straight line, whereby, in cooperation with the correspondingly arranged superconductor arrangements 13, a rotary bearing with the axis of rotation 8 is formed.

As shown in FIG. 3, both end faces of the valve body 5 contact the inner wall of the channel 2. Alternatively, the valve body 5 may also be dimensioned and / or arranged in the channel 2 such that one or both end faces of the valve body 5 are spaced from the channel inner wall are. In particular, the valve body 5 may be dimensioned and / or arranged in the channel 2 such that it does not touch the inner wall of the channel 2 in one, two or all positions. Preferably, one or more sealing lips can be attached to the valve body 5 or at its end faces. As shown in FIG. 3, the magnet assemblies 12 in the present embodiment are incorporated in FIGS

End faces of the valve body 5 inserted. Alternatively, however, the magnet arrangements 12 can also be placed on the end faces of the valve body 5. Further, it is possible that the entire valve body 5 is formed as a magnet assembly 12.

As also shown in FIG. 3, the coupling arrangement 4 comprises two superconductor arrangements 13 which are each formed as a plate-shaped superconductor and are arranged on the outside of the channel 2. Alternatively, only one superconductor arrangement 13 or more than two superconductor arrangements 13 may be used be provided. The superconductor arrangements 13 can furthermore be arranged outside the channel 2 fixedly or detached from the channel 2. The superconductor assemblies 13 may be arranged to allow movement of the superconductor assemblies 13 relative to the channel 2. In addition, the superconductor assemblies 13 may also be embedded in the wall of the channel 2 so as to minimize the distance between the superconductor assembly 13 and the magnet assembly 12. Preferably, the superconductors can be cooled by a cooling device, not shown here, such as a cryostat or a liquid nitrogen-containing heat sink, at or below their critical temperature.

In order for the magnetic coupling described above to arise between the superconductor arrangements 13 and the magnet arrangements 12, a magnetic field geometry is respectively stored in the superconductors, which corresponds essentially to the geometry of the magnetic field penetrating the superconductor. In particular, the axis of symmetry of the magnetic field geometry stored in the superconductors is substantially coaxial with the magnetic fields provided by the magnet arrangements 12. This allows the formation of a pivot bearing, in which the axis of rotation 8 substantially coincides with the Symmetrieach sen of the magnetic fields of the magnet assemblies 12 and the stored magnetic field geometries. Accordingly, there is substantially no change in the magnetic interaction between the magnet assemblies 12 and the superconductor assemblies 13 upon rotation of the valve body 5 about the axis of rotation 8.

In the first embodiment, the valve device 10 further comprises a first drive means 7, which for kontaktlo sen providing an actuating force on the Ventilkör- 5 is arranged to pivot relative to the channel 2 between a first position and a second position. In the present embodiment, the drive means 7 is arranged such that the actuating force is oriented substantially perpendicular and skewed with respect to the axis of rotation 8 and perpendicular to the longitudinal direction of the channel 2. Ultimately, however, any other orientation of the actuating force is possible, which acts on the valve body 5 with a torque about the axis of rotation 8 and so can cause a corresponding pivoting of the valve body 5 about the axis of rotation 8.

In the present embodiment, the drive means 7 is configured to provide a magnetic field. Preferably, the main direction of this magnetic field is aligned parallel to the largest surface of the plate-shaped superconductors so as to minimize the interaction between this magnetic field and the superconductors. The magnetic field penetrates at least one component 9 of the valve body 5, which has magnetic properties, so that the component 9 is acted on by the provided magnetic field of the drive means 7 with the actuating force. Conveniently, the component 9 may include the magnet assembly 12. Depending on the magnetic property of the component 9 and orientation of the magnetic field provided, an attractive or repulsive force between the component 9 and the drive means 7 can be effected as the actuating force. In the present embodiment, it is sufficient if the operating force can be effected only in one direction to the valve body 5 from the first position to the second position

pivot. The return to the first position can then be done by weakening or switching off the magnetic field of the drive means, since the valve body 5 due to its ner oblong geometry can also be offset from the fluid flow 3 back to the first position. But it is of course also possible to effect the provision of the second position in the first position in that the drive means 7 provides a corresponding actuation force.

The drive means 7 can be controlled by a control unit, not shown in the figures, and can provide the actuation force or the magnetic field effecting the actuation force as a function of a control signal output by the control unit.

FIG. 4 shows a schematic plan view of a second embodiment of a valve device 20 according to the invention. In contrast to the first embodiment, here the superconductor arrangements 13 are assigned to the valve body 5, and the magnet arrangements 11 are assigned to the channel 2. Preferably, here the channel 2 carries a fluid 3 which is cold enough to cool the superconductor assemblies 13 to or below their critical temperature. For example, the channel 2 can lead as liquid 3 liquid nitrogen.

In this second embodiment, furthermore, the magnet arrangements 11 can be designed as electromagnet arrangements or permanent magnet arrangements.

As in the first embodiment, in the second embodiment as well, the number of magnet assemblies 11 and superconductor assemblies 13 may each be less than or greater than two. In addition, in the second embodiment, the magnet assemblies 11 may be disposed outside the channel, outside the channel, or in the wall of the channel. The superconductor arrangements 13 can, as shown in FIG. surfaces of the valve body 5 mounted or be embedded in this. The orientation of the magnetic fields of the magnet assemblies 11 to the stored magnetic field geometries in the superconductor assemblies 13 corresponds to the already discussed in connection with the first figure alignment and should not be repeated at this point.

In addition, in the second embodiment, the valve body 5 may be dimensioned and / or arranged in the channel 2 such that one or both end faces of the valve body

5 are spaced from the channel inner wall. In particular, the valve body 5 may be dimensioned and / or arranged in the channel 2 such that it does not touch the inner wall of the channel 2 in one, two or all positions. Preferably, one or more sealing lips can be attached to the valve body 5 or at its end faces.

Figures 5 and 6 show a third embodiment. In contrast to the first and second embodiments, the coupling arrangements here form no pivot bearing, but are rotatably coupled together. In FIGS. 5 and 6, this aspect is indicated by the fact that the first and second coupling arrangements are particularly elongated, so that the magnetic field provided by the magnet arrangement and the magnetic field geometry stored in the superconductor arrangement are not circularly symmetrical, whereby the second coupling arrangement 6 during pivoting of the first coupling assembly 4 corresponding forces undergoes the second coupling arrangement

Forcing 6 to follow the pivoting of the first coupling assembly 4. For the pivoting of the first coupling arrangement 4, the drive means 7 may here comprise a rotary motor which applies a corresponding torque to the first coupling arrangement 4 via a drive shaft. Alternatively, it can Of course, the first coupling arrangement 4 are held stationary, and the channel 2 are pivoted by means of a corresponding drive means, so as to achieve a pivoting of the channel 2 relative to the valve body 5.

Analogous to the permutations shown in FIGS. 3 and 4, the superconductor arrangements and magnet arrangements can also be associated with the channel 2 or the valve body 5 and arranged or fastened in a manner already discussed in connection with the previous embodiments.

In addition, in the third embodiment, the valve body 5 may be dimensioned and / or arranged in the channel 2, that one or both end faces of the valve body 5 are spaced from the channel inner wall. In particular, the valve body 5 may be dimensioned and / or arranged in the channel 2 such that it does not touch the inner wall of the channel 2 in one, two or all positions. Preferably, one or more sealing lips can be attached to the valve body 5 or at its end faces.

Figures 7 and 8 show a fourth embodiment of a valve device 40. The fourth embodiment substantially corresponds to the first embodiment and a repeated explanation of the functionally identical components is avoided at this point. The valve device 40 additionally has sealing lips 14 and cooling devices 15 in this embodiment. Of course, these additional features can also be used in any of the already discussed first to third embodiments of the valve device according to the invention.

Claims

claims

Valve device (10; 20; 30; 40) comprising: a channel (2) for guiding a fluid (3), a valve body (5) arranged in the channel (2), a first coupling arrangement (4) , which is associated with the channel (2), and a second coupling arrangement (6) which is associated with the valve body (5), wherein one of the two coupling arrangements comprises a magnet arrangement (11, 12) and the other of the two coupling arrangements comprises a superconductor arrangement (13), and the magnet arrangement (11; 12) and the superconductor arrangement (13) are non-contact-transmitting in a force-transmitting manner in order to ensure a pivotable mounting of the valve body (5) in relation to the channel (2), a drive means (7) for, in particular contactless, providing an actuating force on the valve body (5) in order to pivot it relative to the channel (2) between a first position and a second position and thereby to influence a free cross section of the channel (2).

2. Valve device (10; 20; 40) according to claim 1, wherein the first and second coupling arrangement (4, 6) form a pivot bearing with an axis of rotation (8) for the valve body (5), so that the pivoting of the valve body (5). in a relative movement of the coupling assemblies to each other about the axis of rotation (8).

3. Valve device (10; 40) according to claim 1 or 2, wherein the second coupling arrangement (6) as the magnet arrangement (12). at least one circular symmetric permanent magnet

and / or comprises at least a section of a circularly symmetric permanent magnet.

4. Valve device (20) according to claim 1 or 2, wherein the first coupling arrangement (4) as the magnet arrangement (11) comprises an electromagnet arrangement and / or a permanent magnet arrangement.

5. Valve device (10) according to any one of claims 1 to 4, wherein the drive means (7) is adapted to provide a valve body (5) at least partially penetrating magnetic field in response to a control signal.

A valve device (10; 20) according to claim 5, wherein at least one component (9) of the valve body (5) has magnetic properties such that the magnetic field provided by the drive means (7) exerts the actuating force on the valve body (5).

7. The valve device (30) according to claim 1, wherein the first coupling arrangement (4) and the second coupling arrangement (6) are non-rotatably coupled to each other, and the drive means (7) is arranged in response to a control signal, the first coupling arrangement (4) relative to Channel to pivot so as to cause the pivoting of the valve body (5).

A valve device (10; 20; 30; 40) according to any one of claims 1 to 7, wherein the superconductor assembly (13) comprises at least one plate-shaped superconductor at least partially disposed within a magnetic field provided by the magnet assembly (11; 12).

Valve device (10; 20; 30; 40) according to one of claims 1 to 8, wherein the valve body (5) in the first position and / or the second position on the channel (2) is applied, so that the valve body in the first Position and / or the second position is stored stable.

Valve device (10; 20; 30; 40) according to one of claims 1 to 9, wherein the valve body (5) comprises at least one sealing lip (14) which abuts the channel (2) in the first and / or second position , so that the channel (2) is closed in one of the two positions.