DE202017104440U1 - Valve and valve assembly - Google Patents

Abstract

Valve (2, 2 ') with a valve housing (4), comprising a housing cover (6), a housing bottom (10) and an intermediate housing (8) arranged between the housing cover (6) and the housing bottom (10), wherein the valve housing ( 4) a valve chamber (12) encloses and at least one valve opening (14), wherein within the valve chamber (12) at least one between a closed position for closing the valve opening (14) and an open position for releasing the valve opening (14) axially movable actuator ( 16), one for actuating the adjusting element (16) serving in the opening direction wire or ribbon-shaped SMA element (18) made of a shape memory alloy, a movement of the actuating element (16) in the closing direction serving return element (20) and a printed circuit board (22) are, wherein the SMA element (18) with a central portion (18c) fixed to the actuator (16) and for applying current with its ends (18a, 18b) with the printed circuit board (22) is electrically connected, characterized in that at least a part of the guide means serving to guide the actuating element and / or for fixing the printed circuit board (22) within the valve (2, 2 ') and / or a receiving space ( 34) for receiving the required for electrical contacting of the printed circuit board (22) components of the intermediate housing (8) are formed.

Description

The invention relates to a valve with a valve housing which encloses a valve space and has at least one valve opening. To actuate such a valve, an adjusting element is arranged within the valve chamber, which is movable between a closed position for closing the valve opening and an open position for releasing the valve opening. Furthermore, the invention relates to a valve arrangement with a plurality of valves.

The movement of the actuating element between the open and closed positions can be effected by means of shape memory alloys (SMA), for example in the form of wires. These are alloys that can exist in two different crystal structures depending on their temperature. At room temperature, there is a martensitic microstructure with a tetragonal space-centered lattice that transforms from a transformation temperature of about 80 ° C into an austenitic microstructure with a cubic-area-centered lattice. Therefore, a wire made of such a shape memory alloy has a property of shortening from a martensite to an austenite structure due to lattice transformation when heated above the transformation temperature. To heat the SMA element, this is usually supplied with current, which makes it shorter and thus can move the actuator.

Out DE 10 2005 060 217 For example, a valve with a valve housing enclosing a pressure chamber is known, wherein a plunger for opening and closing a valve opening is arranged within the pressure chamber. The plunger is thereby actuated to open the valve opening of an SMA element, which is electrically connected to a disposed within the valve housing circuit board to be energized can. In addition to the SMA element and the circuit board, the valve includes numerous other components, such as a shield, the electronics required for contacting the circuit board, sealing elements for sealing the pressure chamber or the individual components to each other or guide means for guiding the control element within the pressure chamber. Due to the numerous individual components that are required for the function of the valve, but on the one hand to high material costs, on the other hand production of the individual components and their installation are associated with great effort.

It is therefore an object of the invention to provide a valve and a valve assembly with a reduced number of components, the assembly is simplified, the actuation force of the SMA element is still effectively exploitable and a control of the control element should be possible.

The first object is achieved by a valve having the features according to claim 1. The valve has a valve housing comprising a housing cover, a housing bottom and an intermediate housing arranged between the housing cover and the housing bottom, the valve housing enclosing a valve chamber. The valve housing has at least one valve opening and at least one arranged within the valve space, between a closed position for closing the valve opening and an open position for releasing the valve opening axially movable actuator, serving for actuating the actuating element in the opening direction or stroke direction wire or ribbon-shaped SMA element from a shape memory alloy, serving for moving the adjusting element in the closing direction or restoring direction return element and a circuit board. The SMA element is fixed to actuate the actuating element with a central portion of the actuator and electrically connected to the application of power with its ends directly or indirectly to the circuit board. At least part of the guide means serving to guide the control element and / or fixing the printed circuit board within the valve or the valve chamber serving fasteners and / or a receiving space for receiving the required for electrical contacting of the circuit board components are formed according to the invention of the intermediate housing.

The idea of the invention is therefore to reduce the number of separate components required for the functionality of the valve by integrating them into the intermediate housing itself or integrally with it. This has the advantage that no further plastic parts or subassemblies are required. In the present case, the term "valve chamber" is to be understood as meaning the entire interior space of the valve surrounded by the valve housing.

In a preferred embodiment of the valve, the valve chamber comprises a flow chamber and an actuating chamber which are at least partially separated from one another by a partition wall having the at least one valve opening, wherein the partition wall is in particular formed integrally with the intermediate housing. The flow chamber is thus enclosed by the intermediate housing and on the upper side by the housing cover, the actuation chamber is enclosed by the intermediate housing and on the underside by the housing bottom. In other words, the valve space is divided into two areas, which are essentially separated from each other in terms of flow, namely the flow chamber through which a fluid, in particular air flows, and the actuating chamber or an actuator chamber, within which all components required for actuating the valve or for opening the valve opening, ie the adjusting element, the SMA element and the printed circuit board, are arranged. This has the advantage that the main flow of the flow fluid is passed predominantly through the flow chamber and thus not past the components required for actuating the valve opening, in particular the SMA elements, or the main flow is conducted in a region separated from the SMA elements. This makes it possible to set and regulate the temperature of the SMA elements more accurately, since the heating and cooling of the SMA elements takes place largely independently of the flow of the fluid flowing through the valve. In addition, due to the uniform, but reduced cooling lower currents for charging the SMA element with power or for the actuation of the actuating element required, whereby the service life of the SMA element is increased. Furthermore, this can achieve a uniform flow of the fluid, a smaller pneumatic resistance and a noise optimization.

In addition, the flow chamber advantageously has a first region and a second region, wherein a connecting channel connecting the first region of the flow chamber to the second region of the flow chamber and / or the valve opening is closed in the closed position of the control element and released in the open position of the control element. In other words, a first region of the flow chamber and a second region of the flow chamber are connected to one another via the valve opening and / or the connection channel. Under connection channel is the valve area between the actuator for closing and releasing the valve opening and the valve opening surrounding the sealing seat to understand, for example, completely surrounds the actuator. When the valve opening is closed, the connection channel is connected to one of the two regions of the flow chambers so that the fluid also distributes within the connection channel or the valve region.

A pressure connection connecting the valve to an air supply unit, in particular a pneumatic pump, opens into the valve chamber, in particular into the flow chamber, particularly preferably into the first region of the flow chamber, a consumer connection connecting the valve to a media reservoir, in particular an air cushion, discharges into the valve chamber , in particular in the flow chamber, particularly preferably in the second region of the flow chamber. Preferably, the pressure port for supplying air into the valve chamber and the consumer port for supplying air into the media reservoir formed by the intermediate housing and in particular completely disposed within the intermediate housing, so do not stand out of the intermediate housing or the valve, which saves space and Damage to the connections or the connected supply lines or hoses should be avoided. Furthermore, at least one opening is preferably formed in the housing cover, which includes the valve space, in particular the flow chamber, or the first or second area of the flow chamber for discharging air from the valve or the media reservoir and / or the valve space, in particular the flow chamber connects the atmosphere or via the valve space, in particular the flow chamber is connected to the atmosphere.

In a preferred embodiment, the guide means for guiding a first, the valve opening facing the end portion of the actuating element at least partially encircling the valve opening and extending in the direction of movement of the adjusting element intermediate wall, which is in particular integrally formed with the partition, wherein the intermediate wall a receiving space for the actuating element formed. The intermediate wall is thus formed as a wall section of the intermediate housing or the partition wall and extends from an area surrounding the valve opening into the actuating chamber. As a result, during the axial movement in the stroke direction or in the opening direction and in the return direction, ie in the closing direction, the actuating element is reliably guided by the intermediate housing.

For guiding a second, the valve opening facing away from the end portion of the actuating element further guide means are integrated in the circuit board, in particular in the form of a formed in the circuit board recess, in particular a through hole into which the second end portion of the actuating element extends at least partially and both in the open position is mounted axially movable in the closed position.

As a fastening means is advantageously at least one formed on the intermediate housing, deformable projection which extends in the assembled state through a through hole in the circuit board and is inextricably linked to the circuit board. The projection is for example a Kunstoffdom which is positively and non-positively connected by hot caulking with the circuit board to fix them to the intermediate housing. By fixing the circuit board to the intermediate housing is also achieved that this is held free-floating within the valve or the valve chamber, so that external influences, for example a deformation of the valve housing does not affect the functionality of the valve.

For this purpose, the fastening means, in particular the at least one projection is preferably arranged on one of the printed circuit board facing end side of the intermediate wall or formed integrally there, wherein the end face of the intermediate state during assembly and in the assembled state forms a stop surface of the circuit board to a firm connection of the two Components and thus to ensure a linear guide of the actuating element within the receiving space of the intermediate wall and the recording of the circuit board.

Further, the intermediate wall preferably in the direction of movement of the actuating element extending recesses, in particular longitudinal slots, within which the SMA element is guided, whereby the central portion is reliably held on the actuator and a vertical movement of the actuating element upon application of the SMA element with power is guaranteed.

To actuate the valve, the SMA element is energized, whereby the SMA element is shortened and the actuator of the valve is moved in the stroke direction and thus releases the valve opening. For this purpose, the two ends of the SMA element are each preferably electrically connected to the circuit board by means of a crimp connector.

In a preferred embodiment, the ends of the SMA element are in this case in particular connected to the printed circuit board in such a way that the ends each project laterally beyond the printed circuit board in a direction perpendicular to a direction of movement of the actuating element and / or spaced apart from an upper side of the printed circuit board in a stroke direction of the actuating element Recording of the crimp connector are fixed. A portion of the crimp connector spaced from the receptacle is arranged on the upper side of the printed circuit board and electrically connected to the printed circuit board, in particular by means of at least one clamping means, which is held positively and / or non-positively in a recess of the printed circuit board in the assembled state. The crimp connector is - as well as the circuit board itself - free floating within the valve chamber, more precisely arranged within the actuating chamber and fixed only to the circuit board. The force exerted by the SMA element on the actuating element is limited by the length of the SMA element or the shortening of the length of the SMA element caused during energization. Due to the side of the circuit board protruding and also extending in the direction of movement of the actuating element along the circuit board recording of the crimp results therefore on the one hand the advantage that the SMA element with the same height of the valve have a greater length and thus a greater force on the Exercise control element. On the other hand, the height of the valve compared to known valves, in which the ends of the SMA element are arranged above the circuit board, with the same length of the SMA element reduce. The printed circuit board itself can be contacted or contacted in particular via an insertable into the receiving space of the intermediate housing connector with an electrical connection.

The overall height of the valve can be further achieved by an advantageous embodiment of the actuating element, wherein the first end portion of the actuating element has a perpendicular to the direction of movement of the actuating element extending through hole, which extends in particular centrally through the first end portion, wherein the central portion of SMA element is guided within the passage opening. During assembly, the SMA element is guided or threaded through the passage opening and subsequently its ends are fixed in the receptacle of the crimp connectors.

In order to facilitate the assembly further, the first end portion of the actuating element in a further preferred embodiment, a lateral slot which opens into the through hole, wherein the slot in particular from a distance to the passage opening in the direction of movement of the adjusting element position on an outer peripheral surface of the first end portion of the actuating element to the passage opening extends. In other words, the through opening is accessible from the side, wherein the slot extends from the passage opening to the outer peripheral surface of the actuating element both perpendicular and parallel to the direction of movement of the actuating element to prevent lateral slipping of the SMA element during use of the valve. In order to ensure a secure closing of the valve opening, the actuating element also has at its first end portion a sealing member closing the valve opening, which can be arranged directly on this due to the above-described advantageous embodiment of the first end portion.

In order to accomplish both filling and venting of the media reservoir with only one valve, an actuator is arranged in a variant of the valve within the valve chamber, in particular within the flow chamber, particularly preferably within the second region of the flow chamber, which rotatable or pivotally mounted on the intermediate housing and is coupled or interacts with the actuating element that the opening to the atmosphere released in the closed position befindendem actuator and the opening is closed when it is in the release position befindendem actuator. The actuator preferably carries a sealing element on a section facing the opening to the atmosphere and comprises a restoring element, for example a leaf spring, which pretensions the actuator in the closing direction of the opening. With such a variant, a cyclic filling and venting of the media reservoir can be achieved, it being ensured that the valve and thus the media reservoir are always vented when not actuated actuator of the valve.

In particular, in the event that the pressure port and / or the consumer port does not protrude from the intermediate housing, it is advantageous if the valve housing, in particular the intermediate housing has a support device which at least partially surrounds the pressure port and / or the consumer port. As a result, the connections are protected against mechanical influences and their wall thicknesses can be made as thin as possible, whereby, for example, the flow within the connection or the connecting piece is optimized. Furthermore, a bending or breaking off of the nozzle is thereby prevented when the hose or the line is loaded laterally, for example by lateral pulling down of the hose. Furthermore, the pressure connection and / or the consumer connection are preferably designed such that they have a first end facing away from a free end, the valve chamber end portion and a second, the valve chamber end facing, wherein the second end portion is at least partially narrowed radially in the circumferential direction , In other words, a free end of the pressure port and / or the consumer port or the connecting piece has a smaller outer diameter than an end facing the valve chamber, so that a plugging of the tube is simplified. Due to the partial radial narrowing of the second end portion, a rear grip surface is formed, whereby a plugged onto the nozzle hose can be secured or secured against removal.

The second-mentioned object is achieved by a valve arrangement having the features according to claim 15. The valve arrangement comprises a plurality of valves, in particular designed in each case in the manner described above. The valve housing of a valve respectively enclosing valve housing, in particular the intermediate housing and / or housing cover and / or housing bases, and / or the circuit boards are integrally formed. In other words, the valve chambers of all valves of the valve assembly are enclosed by a common valve housing or a common intermediate housing and / or housing cover and / or housing bottom. Furthermore, all of the SMA elements of the plurality of valves are electrically connected to a common circuit board. This significantly reduces the number of components required. Such a valve arrangement is integrated, for example, in a vehicle seat with contour adjustment.

In an advantageous embodiment of the valve arrangement, at least a first part of the plurality of valves has a common pressure connection, respectively into the valve chamber, in particular into the flow chamber, particularly preferably into a first region of the flow chambers or a region of the first valves encompassing the first regions of the flow chambers opens or in each case with the valve space, in particular the flow chamber, particularly preferably the first region of the flow chamber or the region via at least one air duct is connected and / or at least a second part of the plurality of valves has a common opening for connection to the atmosphere, in particular in the first region of the flow chambers or a region comprising the first regions of the flow chambers opens or is connected via at least one air channel with the first regions of the flow chambers. In other words, the valve spaces of a part of the valves are fluidically connected to the common pressure port, in particular via air ducts integrated in or formed by the intermediate housing and / or areas or chambers for supplying air into the respective valve chambers or flow chambers, more precisely in the first area of the flow chambers of the first valves. In addition, the valve chambers of a portion of the valves are connected via a common opening to the atmosphere, in particular by integrated in the intermediate housing or formed by this air channels and / or areas or chambers for discharging air from the respective valve chambers or flow chambers, more precisely in the second regions of the flow chambers of the second valves. Such a valve assembly is used for example in a vehicle seat with contour adjustment for setting a lordosis or a side support, wherein a media storage in the form of an air cushion are each associated with two valves, which are connected to this via the consumer connection and a supply line or a hose, wherein the first Valve is connected via the pressure port and a supply line to a pneumatic pump and the second valve via the opening to the atmosphere. By opening the first valve with the second valve closed at the same time, the medium reservoir is filled, closing both valves will reduce the volume of air enclosed and held gas-tight within the air cushion and by opening the second valve with the first valve closed, the air cushion is emptied. On the consumer side, the valves assigned to a media store are fluidically connected via a common air channel or a common air chamber. The first and the second valve thus form a 3/3-way valve as a valve assembly.

In an alternative advantageous embodiment, the plurality of valves has a common pressure port, which respectively opens into the valve chamber, in particular into the flow chamber, particularly preferably into the first region of the flow chamber of the valves or a region encompassing the first regions of the flow chambers or respectively with the valve chamber , in particular the flow chamber, particularly preferably the first region of the flow chambers or the region via at least one air duct is connected, each valve having a separate opening for connecting the valve chamber, in particular the flow chamber with the atmosphere, which opens in particular in the second region of the flow chamber , In other words, the valve spaces of all the valves are fluidically connected to the common pressure port, in particular via air channels and / or chambers or areas for supplying air integrated in the intermediate housing or into the respective valve chambers or flow chambers, more precisely into the first area of the flow chambers. In addition, the valve chambers of all the valves are connected or connectable to the atmosphere via an opening, in particular through air channels and / or chambers or areas for discharging air from the media reservoirs or the respective valve chambers integrated in or formed by the intermediate housing or flow chambers, more precisely from the second regions of the flow chambers. As a result, a 3/2-way functionality is achieved, for example, to realize a massage function, wherein the valve opening and the opening to the atmosphere are alternately released and closed in order to achieve a cyclical adjustment of the contour of the vehicle seat.

The functionality of the valve, whether 3/3-way or 3/2-way functionality is thus primarily determined by the structure of the intermediate housing, which forms the valve chambers and the air ducts or chambers. Thus, either a cyclic massage function or static adjustment function can be achieved by appropriate selection or replacement of the intermediate housing.

For the formation of the 3/3-way functionality, the valve chambers of the plurality of valves are separated from the receiving space for the electronic contacting of the printed circuit board by a partition in a preferred embodiment, wherein the partition is in particular formed integrally with the intermediate housing. On the other hand, the valves whose valve chambers, in particular their flow chambers, particularly preferably their first regions are connected to the pressure port and the valves whose valve chambers, in particular their flow chambers, particularly preferably their first regions are connected to the atmosphere, separated by a partition, wherein the partition is in particular formed integrally with the intermediate housing. For the formation of the 3/2-way functionality, the valve chambers of the plurality of valves are at least separated from the receiving space for the electronic contacting of the circuit board by a partition in a preferred embodiment, wherein the partition is in particular formed integrally with the intermediate housing. The several valves can be actuated independently of each other in order to selectively fill or vent individual air cushions.

In this case, the partitions in particular have a passage opening, which is pneumatically sealed in the assembled state, for the printed circuit board.

• 1A eine Schnittdarstellung eines Ventils gemäß einer ersten Ausführungsform in Schließstellung,
• 1B eine Schnittdarstellung eines Ventils gemäß einer zweiten Ausführungsform in Schließstellung,
• 2 einen Crimpverbinder zum Verbinden des SMA-Elementes mit der Leiterplatte,
• 3A- D ein Stellelement zum Verschließen und Freigeben der Ventilöffnung gemäß einer ersten Ausführungsform,
• 4A - C ein Stellelement zum Verschließen und Freigeben der Ventilöffnung gemäß einer zweiten Ausführungsform,
• 5A - B ein Stellglied zum Verschließen und Freigeben der Atmosphärenöffnung,
• 6 eine Ventilanordnung mit mehreren Ventilen in einer Explosionsdarstellung mit einem Zwischengehäuse gemäß einer ersten Ausführungsform,
• 7 eine Draufsicht auf das Zwischengehäuse einer Ventilanordnung gemäß 6,
• 8 eine Detailansicht des Zwischengehäuses mit Stellelement aus 7,
• 9 eine Untersicht auf das Zwischengehäuse der Ventilanordnung gemäß 6 mit integrierter Leiterplatte,
• 10 eine Detailansicht einer Unterseite des Zwischengehäuses der Ventilanordnung gemäß 6 ohne Leiterplatte,
• 11 eine Draufsicht auf ein Zwischengehäuse einer Ventilanordnung gemäß einer zweiten Ausführungsform,
• 12 einen Teilausschnitt eines Zwischengehäuses mit einer Stützvorrichtung,
• 13A - C ein Anschlussstutzen in verschiedenen Ansichten.

The invention will be explained below with regard to further features and advantages with reference to the description of exemplary embodiments and with reference to the accompanying drawings. Each shows in a schematic schematic diagram:

• 1A a sectional view of a valve according to a first embodiment in the closed position,
• 1B a sectional view of a valve according to a second embodiment in the closed position,
• 2 a crimp connector for connecting the SMA element to the circuit board,
• 3A-D an actuator for closing and releasing the valve opening according to a first embodiment,
• 4A-C an actuator for closing and releasing the valve opening according to a second embodiment,
• 5A-B an actuator for closing and releasing the atmosphere opening,
• 6 a valve arrangement with a plurality of valves in an exploded view with an intermediate housing according to a first embodiment,
• 7 a plan view of the intermediate housing of a valve assembly according to 6 .
• 8th a detailed view of the intermediate housing with actuator 7 .
• 9 a bottom view of the intermediate housing of the valve assembly according to 6 with integrated circuit board,
• 10 a detailed view of a bottom of the intermediate housing of the valve assembly according to 6 without circuit board,
• 11 a plan view of an intermediate housing of a valve assembly according to a second embodiment,
• 12 a partial section of an intermediate housing with a supporting device,
• 13A-C a connecting piece in different views.

1A shows a valve 2 with a valve housing 4 , which consists of an upper housing cover 6 , a lower caseback 10 and one between the housing cover 6 and the caseback 10 arranged intermediate housing 8th is composed. The valve housing 4 encloses a valve chamber 12 in which a valve opening 14 empties. Inside the valve chamber 12 is a between a closed position for closing the valve opening 14 and an open position for releasing the valve opening 14 in a direction of movement B axially movable actuator 16 arranged. For actuating the control element 16 in an opening direction or stroke direction H serves a wire-shaped SMA element 18 from a shape memory alloy, which with a middle section 18c on the actuator 16 , more precisely at its first end section 16a is held. For powering the SMA element is 18 with his ends 18a . 18b with a likewise within the valve space 12 arranged circuit board 22 electrically connected.

For movement of the actuating element 16 in a closing direction or return direction R serves a return element 20 , In this case, a helical compression spring having a second end portion 16b of the actuating element 16 concentrically surrounds and with a first end to the circuit board 22 and a second end to the first end portion 16b of the actuating element 16 , opposite the second end section 16b is radially widened, supported.

The intermediate housing 8th includes all for the functionality of the valve 2 required components, in other words, all components necessary for this purpose in the intermediate housing 8th self-integrated, as described below.

The valve room 12 is in a flow chamber 24 and an actuation chamber 26 divided by a dividing wall 28 are separated from each other. The actuator 16 as well as the actuation of the actuating element 16 required components, namely the SMA element 18 , the reset element 20 as well as the circuit board 22 , are inside the actuation chamber 26 arranged. The partition 28 is integral with the intermediate housing 8th formed or formed on this. The flow chamber 24 has a first area 24a and a second area 24b on, via a connecting channel 24c, in a closed position of the actuating element 16 closed and in an open position of the actuating element 16 is shared with each other.

To supply air to the valve chamber 12 , more precisely in the flow chamber 24 is their first area 24a connected to an air supply unit or a pneumatic pump or a - in 1A invisible - pressure connection, which is connected or connected to the pneumatic pump via a supply line, opens directly or indirectly into the first area 24a the flow chamber 24 , By releasing the valve opening 14 For example, the supplied air may flow via the communication passage 24c passing through the valve opening from the first area 24a in the second area 24b stream. The valve 2 is used in particular for filling a - not shown - media storage, such as an air cushion of a vehicle seat with contour adjustment. For this purpose, the valve chamber 12 , more precisely, the flow chamber 24 or their second area 24b with a consumer connection 30 fluidly connected or the consumer connection 30 flows into the second area 24b so that the media reservoir is connected to the valve by means of hoses 2 can be connected. Both the pressure connection and the consumer connection 30 are integral with the intermediate housing 8th trained and do not stand out from this. If the valve 2 is used for discharging air from a media reservoir, the first region 24a of the flow chamber 24 connected to the atmosphere or connectable, with open valve opening 14 can the air from the media storage or from the second area 24b and via the connection channel 24c in the first area 24a flow and be discharged from there to the environment.

Furthermore, the intermediate housing 8th a recording room 34 for receiving the for electrical contacting of the circuit board 22 required components, such as connectors, on, which in 1A in a rear part of the intermediate housing 8th arranged and shown only by dashed lines.

To guide the control element 16 during its operation, on the one hand guide means are provided, which are of the intermediate housing 8th be formed. The guide means comprise an intermediate wall 36 extending from the dividing wall 28 in an area of the valve opening 14 in the direction of movement B in the actuation chamber 26 extends into and integral with the partition 28 or the intermediate housing 8th is trained. The partition 36 bounds a recording room 38 for the upper, the valve opening 14 facing first end portion 16a , To guide the second end portion 16b are guide means in the circuit board 22 integrated, and indeed in the form of a recess formed therein 40 , in the present case a passage opening into which the second end section 16b both in the opening and in the closed position of the actuating element 16 hineinerstreckt. To guide the SMA element 16 has the partition 36 in the direction of movement B extending recesses 27 on.

Thus, also for guiding the control element 16 during an axial movement in the direction of movement B , ie during the actuation of the control element 16 no additional or separate guide means in the form of other components required.

To the valve opening 14 in the closed position - as in 1A shown - reliably close, is at the valve opening 14 facing end portion 16a a the valve opening 14 occlusive sealing element 42 is arranged, which with a valve opening 14 surrounding sealing seat.

For controlling the valve 2 and for loading the SMA element 18 with current, a shortening of the same and thus an actuation of the actuating element 16 to effect are the ends 18a . 18b with the circuit board 22 electrically connected, in each case by means of a crimp connector 44 , Such a crimp connector 44 is in 2 shown enlarged. The ends 18a . 18b of the SMA element 18 are each in a recording 46 of the crimp connector 44 fixed and thus indirectly via the crimp connectors 44 with the circuit board 22 contacted. The crimp connectors 44 protrude perpendicular to the direction of movement B each side with a supernatant A ₁ over the circuit board 22 out. Furthermore, the crimp connectors extend 44 in the stroke direction H from a top 22a the circuit board 22 and parallel to this in the direction of the housing bottom 8th So with a supernatant A ₂ starting from the top 22a the circuit board 22 towards their bottom 22b , where the recording 46 of the crimp connector 44 at a distance in front of the housing bottom 10 ends, that is free-floating within the valve chamber 12 is arranged. One of the recording 46 spaced section 48 of the crimp connector 44 is about clamping means 50 electrically with the circuit board 22 connected. This can be the section 48 both flat on the top 22 a rest as well as at least partially a small distance to the top 22a exhibit. To one of tolerances of the circuit board 22 or its top 22a to achieve independent connection is the crimp connector 44 or its section 48 completely minimal from the top 22a spaced and the crimp connector 44 is only by the clamping means 50 carried. Each crimp connector 44 In the present case, two each have a recess of the printed circuit board 22 extending, in this case substantially oval and annular clamping means formed 50 on, which are elastically deformable for insertion into the recess and held in the assembled state form and / or non-positively in the recess. The crimp connectors 44 thus provide the electrical connection between the ends fixed thereto 18a . 18b of the SMA element 18 and the circuit board 22 ago. Through the both side and in the stroke direction H protruding crimp connector 44 may be an extra length of the SMA element 18 , namely the length of the diagonal of an imaginary rectangle with the side lengths A ₁ and A ₂ for actuating the control element 16 be used, whereby an overall reduction in the height of the valve 2 is reached. The circuit board 22 even through one in the recording room 34 the intermediate housing 8 plug-in connector contacted with an electrical connection.

For mounting the circuit board 22 inside the valve chamber 12 , which is integral with the intermediate housing 8th trained partition 36 as a fastener two deformable projections 52 on, which are integrally formed on the front side and in the assembled state through a through hole of the circuit board 22 extend and unsolvable with the circuit board 22 are connected. The front side also forms a stop surface for the circuit board 22 out.

This in 1B illustrated valve 2 'is exemplified as a 3/2-way valve and thus has a further valve opening, namely an opening 32 that the valve room 12 Connects to the atmosphere to allow air to escape from the valve chamber 12 to allow on. Otherwise corresponds to the design of the valve 2 'of the in 1A shown valves 2 ("2/2-way valve"), so that the individual components are provided with the same reference numerals. To achieve the 3/2-way functionality is inside the valve chamber 12 or within the flow chamber 24 an actuator 58 arranged, which rotatably on the intermediate housing 8th stored and with the actuator 16 is actively connected. The actuator 58 is in the 5A . 5B shown in more detail. The actuator 58 points to one of the opening 32 facing portion a sealing element 60 to close the opening 32 on. At one of the actuator 16 facing end portion comprises the actuator 58 a shift finger 62 , which with the actuator 16 is in contact or on the sealing element 38 is applied. Will the actuator 16 operated and the valve opening 14 is opened, the shift finger 62 due to a return element 64 , in the present case a leaf spring, also moved in the stroke direction and the actuator 58 thus turned around its fulcrum, so that the opening 58 from the sealing element 60 is closed. Becomes the SMA element 18 no longer energized and because actuator 16 thus due to the return element 20 in the return direction R moves, becomes the shift finger 62 by the adjusting element 16 or its sealing element 38 also in the return direction R emotional. Thereby and due to a V-shaped pivot point 66 of the actuator 58 opens the sealing element 60 the opening 32 , The opening 32 to the atmosphere is thus released in the closed position befindendem actuator 16 and is closed when it is in the release position befindendem actuator 16 so as to ensure that the valve chamber 12 or a media reservoir when the valve is not actuated 2 always vented. Such a 3/2-way valve is used, for example, in a vehicle seat with massage function, wherein one or more air bags are each cyclically aerated and vented.

In the 3A . 3B . 3C and 3D is the control element 16 the valves 2 2 'is shown in an enlarged view according to a first embodiment. The first end section 16a of the actuating element 16 has at least one perpendicular to the direction of movement B of the actuating element 16 extending passage opening 54 on, which are centered - in relation to the direction perpendicular to the direction of movement B through the first end section 16a extends through. In the assembled state (cf. 1A . 1B ) is the middle section 18c of the SMA element 18 within the passage opening 54 guided. The SMA element 18 can in this case according to the "needle-thread principle" through this passage opening 54 be guided and kept it reliable.

In the 4A . 4B and 4C is an alternative variant for the actuator 16 the valves 2 , 2 'matching components are again provided with the same reference numerals. Here is the through hole 54 additionally via a lateral slot 56 accessible or in the first end section 16a Furthermore, a lateral slot 56 is inserted, which in the passage opening 54 empties. The slot 56 extends from one to the through hole 54 in the direction of movement B of the actuating element 16 spaced position on an outer peripheral surface of the first end portion 16a in the direction of the passage opening 54 , ie obliquely from top to bottom, to slipping out of the SMA element 16 To prevent in the assembled state and to ensure its secure fit.

6 shows a valve assembly 100 with several valves 2 in an exploded view. The valve arrangement 100 includes a common valve housing for all valves 2 , In other words: the valve space 12 a valve 2 each enclosing the valve housing, both the intermediate housing 108 , the housing cover 106 and the case back 110 are integrally formed, the valve assembly 100 thus has a common intermediate housing 108 , a common housing cover 106 and a common housing bottom 110 within, within which the respective valve space 12 a valve is formed. Furthermore, the valve arrangement 100 an integrally formed, common circuit board 122 for all valves 2 on. This allows the space required by the multiple valves 2 the valve assembly 100 as well as significantly reduce the number of components required and the assembly of the valve assembly 100 compared to previously known valve assemblies.

The valves 2 the exemplary valve assembly 100 are essentially like that based on 1A described valve 2 formed, matching components are provided with the same reference numerals. They each have one inside the valve chamber 12 between a closed position for closing a valve opening and an open position for releasing the valve opening axially movable actuator 16 , a for actuating the control element 16 in the opening direction serving wire-shaped SMA element 18 and one for moving the actuator 16 in the closing direction serving return element 20 on. The SMA elements 18 are in turn with their respective ends by means of a crimp connector 44 electrically with the circuit board 22 connected. With a middle section are the SMA elements 18 each at the associated control element 16 fixed to operate this when subjected to current in a stroke direction. For this purpose, the circuit board 22 into one in a recording room 34 of the intermediate housing 108 plug-in electrical connector 168 triggered or electrically contacted. Between the intermediate housing 108 and the housing cover 106 is also an example of a check valve 172 arranged, for example in combination with a pressure sensor. Within the valve housing is also a damping foam 174 arranged to noise, especially when venting the valves 2 to reduce. The intermediate housing 108 has a pressure connection 170 for connection to an air supply unit as well as four consumer connections 130 for connection to four media stores, in particular air cushion of a vehicle seat with contour adjustment, on.

In 7 is the intermediate housing 108 of the valve assembly 6 in a plan view, in 8th a section of the intermediate housing 108 and in 9 the intermediate housing 108 shown in a bottom view with mounted circuit board 122. 10 shows the section A of the intermediate housing 108 in a bottom view without circuit board. Via a common pressure connection 170 , which is connectable to a pneumatic pump, the flow chambers, more precisely the first areas 24a the flow chambers of a first part of the valves 2 , here four valves 2a , over one of the intermediate housing 108 formed and upper side of the intermediate housing 108 limited air duct 176 Air supplied (indicated by dashed arrows). Between the pressure connection 170 and an area 182 is inside the air duct 176 a check valve 172 arranged. The first areas 24a the valves 2a together form the area 182 in which the air duct 176 opens, so the end portion of the air duct 176 out. It would also be conceivable, however, the first areas 24a each separated by partitions, so that the first areas 24a each one end portion of the air channel 176 form. In the first areas 24a inflowing air becomes when the valve opening is closed 14 essentially in the first areas 24a held. About air gaps 92 However, there is a small exchange of air between the flow chamber 24 or the first regions 24a and the respective actuation chamber 26 of the valve 2 so that a pressure equalization is guaranteed. The dimension of the gap also allows a desired cooling of the SMA elements 18 adjust or heat from the actuation chamber 26 dissipate. Will the valve opening 14 released, air flows out of the first area 24a the flow chamber via the connecting channel 24c through the valve opening 14 in the second area 24b or further via air ducts 178a . b . c . d to consumer ports 130a, b, c, d for present four media reservoirs or airbags (see 8th - solid arrows).

A second part of the valves 2 , in the present case four valves 2 B has a common opening 132 to the atmosphere, which is formed in the housing cover 106 (see. 6 ) and about the first areas 24a the flow chambers 24 of the second part of the valves 2 B or one of the first areas 24a the valves 2 B comprehensive area 184 connected to the atmosphere. If a media store is vented, the air contained therein first flows into the air channels via the respective consumer connection 130a, b, c, d 178a . b . c . d or the second regions 24b and then over the opened valve opening 14 the valves 2 B and the connection channel 24c in the area 184 (please refer 8th - dashed arrows). About the air column 92 also takes place here when the valve opening is open 14 an air exchange between the area 184 and the actuation chambers 26 the valves 2 B ,

The second areas 24b the flow chambers of a first valve 2a and a second valve 2 B are each connected in pairs fluidly with each other and with one of the present four consumer ports 130a, b, c, d for four media storage or air cushion. Each media store or air cushion is one of the air channels or air chambers 178a , b, c, d associated with the air ducts 178a . b . c . d as well as the areas 182 . 184 as well as the area 184 . 186 separating partitions 180 . 188 in turn integral with the intermediate housing 108 are educated or are formed by this. In other words: each a first valve 2a and a second valve 2 B are associated with and associated with a media store, wherein the first valve 2a for filling the media reservoir with air and the second valve 2 B serves to empty the media storage. By this merger of ventilation and venting through in the intermediate housing 108 trained air ducts 178a . b . c . d becomes a 3/3-way functionality of the valve assembly 100 reached. The valve arrangement 100 Thus, a total of the air guide is divided into three areas, a pressure area 182, which is connected to the pneumatic pump and in which the valves 2a or their first areas 24a are arranged, a vent area 184 which is connected to the opening 132 to the atmosphere and in which the first areas 24a the valves 2 B are arranged and an electronics area 186 , which contains the essential components of the electronics. Both in the printing area 182 as well as in the ventilation area 184 or the electronics area 186 can - not provided - pressure sensors are provided to make conclusions about the respective pressure in the air cushion can.

The printing area 182 , the ventilation area 184 and the electronics area 186 are each over from the intermediate housing 108 formed partitions 180 . 188 separated from each other and pneumatically sealed against each other. To make a sealed transition 190 the printed circuit board 122 between the printing area 182 and the vent area 184 and between the vent area 184 and reach the electronics area 186, at the junction in the partition wall 180 . 188 an adhesive is applied through an opening in the printed circuit board 122, which adhesive can be distributed in the intermediate space between the printed circuit board 122 and the dividing wall 180, 188 and cured, for example, by UV light.

To attach the circuit board 122 to the intermediate housing 108 , this protrusions 52 on, on an end face of the receiving spaces 38 forming partitions 36 are formed ( 10 ) and extend in the assembled state through recesses of the printed circuit board 122 and are fixed inseparably therein ( 9 ).

The pneumatic pump as well as the media reservoirs have hoses connected to the pressure port 170 or the consumer ports 130a, b, c, d are pushed, connected to the valve assembly. To the pressure connection 170 or the consumer terminals 130a, b, c, d, the present case completely within the intermediate housing 108 are arranged and not protrude from this, to protect against mechanical influences, is a support device 194 in the intermediate housing 108 integrated, through which the hoses can be inserted through and on the connections (see also 12 ). The support device 194 is exemplified by the pressure port 170 and the consumer terminals 130a, b, c, d partially encompassing sheet metal having an opening through which a hose can be inserted for attachment to the terminals. In a valve arrangement 100 With such a support device 194, for example, the wall thickness of the cylindrically shaped ports can be reduced, which in turn reduces the flow rate of the valve 2 elevated. In 13A to 13C For example, a consumer port 30, 130 is shown as a pressure port 170 has a corresponding shape. The consumer connection 30 . 130 has a first tapered to a free end, the valve chamber 12 opposite end portion 31a on. Following this is a substantially elliptical second, the valve chamber end portion facing 31a , 31b provided. The peripheral portion 31c has a larger outer diameter relative to the peripheral portion 31b, that is, it is widened radially. The widened portion 31c is in the assembled state on the underside of the connecting piece 30 . 130 arranged. As a result, between the first end portion 31a and the second end portion 31b, c is formed a rear grip surface 31d, which ensures a secure fit of the on the terminal 30 . 130 guaranteed hose and secures the hose against peeling.

11 shows an intermediate housing 208 according to a further embodiment, namely for a valve arrangement, the more according to 1B trained valves 2 ', ie 3/2-way valves, and, for example, to perform a massage function of a vehicle seat, that is used for cyclic ventilation and a plurality of air cushion. Since the remaining components of the valve arrangement are essentially those of the previously described valve arrangement 100 Please refer to this. By selecting the intermediate housing 108 or 208 and thus the air ducts arranged therein can thus achieve a desired functionality - massage or static adjustment.

The intermediate housing 208 has a common pressure connection 270 on, over which all valves 2 'are connectable to a pneumatic pump, wherein the pressure port 270 via one inside the intermediate housing 208 trained air duct 276 each with the first areas 24a the flow chambers 24 the valves 2 'is connected or opens into this. The actuator 58 is shown in dashed lines for reasons of clarity only for one of the valves 2 '. An opening to the atmosphere of each valve 2 'is formed in the housing cover which covers the second areas 24b the flow chambers connects with the atmosphere (cf. 1B ). Each valve 2 'is associated with a media storage, with which the respective valve 2' and its second area 24b via an air duct 278 and via consumer connections 230 connected, in turn, accordingly 13A-C can be trained.

In such a trained intermediate housing 208 For example, the valve assembly includes a contiguous pressure area 282 which in turn is separated from an electronics area 286 via a divider wall 288 is disconnected. A transition 190 The printed circuit board between the printing area 282 and the electronics area 286 is here also pneumatically sealed in accordance with the above embodiments.

To fill a media reservoir, air flows over the air duct 276 in the first areas 24a or in the first areas 24a comprehensive range 282 and - as with the intermediate housing 108 - over air gaps 92 in the actuation chamber 26 , Will the valve opening 14 opened, air flows from the first area 24a via the connecting channel 24c through the valve opening 14 in the second area 24b and from there, possibly via other air ducts, not shown here, via the consumer connections 230 to the respective media storage. At the same time the actuator 58 moves, leaving the opening 32 is closed. For venting the media storage, the valve opening 14 by movement of the actuating element 16 closed in the return direction, which in turn also the actuator 58 is moved and thus the opening 32 releases. As a result, due to the pressure prevailing in the media reservoir, the air trapped therein flows through the opening 32 out of the valve 2 'out. Also with the intermediate housing 208 are the air channels 276 and the region 282 formed by the intermediate housing itself.

LIST OF REFERENCE NUMBERS

2, 2a, 2b

Valve

4

valve housing

6

housing cover

8th

intermediate housing

10

caseback

12

valve chamber

14

valve opening

16

actuator

16a

first end portion of the actuating element

16b

second end portion of the actuating element

18

SMA element

18a

first end of the SMA element

18b

second end of the SMA element

18c

middle section of the SMA element

20

Return element (coil spring)

22

circuit board

22a

Top of the circuit board

22b

Bottom of the circuit board

24

flow chamber

24a

first area of the flow chamber

24b

second area of the flow chamber

26

operating chamber

28

partition wall

30, 130, 230

consumer connection

31a, b, c, d

Sections of the consumer connection

32

opening

34

accommodation space

36

partition

38

accommodation space

40

recess

42

sealing element

44

Crimp

46

Recording of the crimp connector

48

Section of the crimp connector

50

clamping means

52

head Start

54

Through opening

56

slot

58

actuator

60

sealing element

62

shift finger

64

Return element

66

pivot point

92

air gap

100

valve assembly

106

housing cover

108, 208

intermediate housing

110

caseback

116

actuator

168

Connectors

170, 270

pressure connection

172

check valve

174

foam cushioning

176, 276

air duct

178a, b, c, d, 278

air ducts

180

partition wall

182

pressure range

184

vent area

186

electronics sector

188, 288

partition wall

190

splice

B

Direction of movement of the control element

H

stroke direction

R

Return direction

A ₁

lateral projection of the crimp connector

A ₂

axial projection of the crimp connector

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102005060217 [0003]

Claims (19)

Valve (2, 2 ') with a valve housing (4), comprising a housing cover (6), a housing bottom (10) and an intermediate housing (8) arranged between the housing cover (6) and the housing bottom (10), wherein the valve housing ( 4) a valve chamber (12) encloses and at least one valve opening (14), wherein within the valve chamber (12) at least one between a closed position for closing the valve opening (14) and an open position for releasing the valve opening (14) axially movable actuator ( 16), one for actuating the adjusting element (16) serving in the opening direction wire or ribbon-shaped SMA element (18) made of a shape memory alloy, a movement of the actuating element (16) in the closing direction serving return element (20) and a printed circuit board (22) are, wherein the SMA element (18) with a central portion (18c) fixed to the actuator (16) and for applying current with its ends (18a, 18b) with the printed circuit board (22) is electrically connected, characterized in that at least a part of the guide means serving to guide the actuating element and / or for fixing the printed circuit board (22) within the valve (2, 2 ') and / or a receiving space ( 34) for receiving the required for electrical contacting of the printed circuit board (22) components of the intermediate housing (8) are formed. Valve (2, 2 ') after Claim 1 wherein the valve space (12) comprises a flow chamber (24) and an actuation chamber (26) which are at least partially fluidly separated from each other by a partition (28) having the at least one valve opening (14), the partition wall (28) being in one piece is formed with the intermediate housing (8). Valve (2, 2 ') after Claim 2 in which a connecting channel (24c) connecting a first region (24a) of the flow chamber (24) and a second region (24b) of the flow chamber (24) and / or the valve opening (14) are closed in the closed position of the adjusting element (16) and in the open position of the actuating element (16) is released. Valve (2, 2 ') according to one of the preceding claims, wherein the valve (2) with an air supply unit, in the valve chamber (12), in particular in the flow chamber (24), particularly preferably in the first region (24a) Flow chamber (24) opening pressure port, and / or the valve (2) with a media storage, in particular an air cushion, connecting in the valve chamber (12), in particular in the flow chamber (24), particularly preferably in the second region (24b) of Flow chamber (24) opening out consumer port (30), are formed by the intermediate housing (8), wherein the pressure port and / or the consumer port (30) in particular completely within the intermediate housing (8) are arranged, and / or wherein in the housing cover (6 ) at least one opening (32, 132) is formed, the valve space (12), in particular the flow chamber (24) for discharging air from the media reservoir and / or the valve chamber (12), esp onder the flow chamber (24) connects to the atmosphere or through which the valve chamber (12), in particular the flow chamber (24) is connectable to the atmosphere. Valve (2, 2 ') according to one of the preceding claims, wherein the guide means for guiding a first, the valve opening facing end portion (16a) of the actuating element (16) at least partially encircling the valve opening (14) and in the direction of movement (B) of Adjusting element (16) extending intermediate wall (36) which is formed integrally with the intermediate housing (8), in particular integrally with the partition wall (28), and which forms a receiving space (38) for the adjusting element (16). Valve (2, 2 ') according to one of the preceding claims, wherein guide means for guiding a second, the valve opening (14) facing away from the end portion (16b) of the adjusting element (16) in the circuit board (22) are integrated, in particular in the form of a in the Printed circuit board (22) formed recess (32) into which the second end portion (16b) of the actuating element (16) extends at least partially. Valve (2, 2 ') according to one of the preceding claims, wherein the fastening means comprise at least one deformable projection (52) formed on the intermediate housing (8), which extends in the assembled state through a recess of the printed circuit board (22) and inseparable with the Printed circuit board (22) is connected. Valve (2, 2 ') after Claim 7 , wherein the fastening means, in particular the at least one projection (52) on one of the printed circuit board (22) facing end side of the intermediate wall (36) is formed, wherein the end face of the intermediate wall (36) forms a stop surface for the printed circuit board (22). Valve (2, 2 ') according to one of Claims 5 to 8th , wherein the intermediate wall (36) in the direction of movement (B) of the adjusting element (16) extending recesses (27), within which the SMA element (18) is guided. Valve (2, 2 ') according to one of the preceding claims, wherein the ends (18a, 18b) of the SMA element (18) in each case by means of a crimp connector (44) are electrically connected to the circuit board (22), in particular such that the ends (18a, 18b) of the SMA element (18) each in a direction perpendicular to a direction of movement (B) of the actuating element (16) laterally over the circuit board (22) projecting and / or from a top (22 a) of the printed circuit board (22) in a stroke direction (H) of the adjusting element (16) spaced receptacle (46) of the crimped connector (40) are fixed, and wherein one of the receptacle (46 ) spaced portion (48) of the crimped connector (44) on the upper side (22a) of the printed circuit board (22) and is electrically connected to the printed circuit board (22), in particular by means of at least one clamping means (50) which in the assembled state form and / or or frictionally held in a recess of the printed circuit board (22). Valve (2, 2 ') according to one of the preceding claims, wherein the first end portion (16a) of the adjusting element (16) has a through opening (54) extending perpendicular to the direction of movement (B) of the adjusting element (16), which extends through the the first end portion (16a), in particular extends centrally, wherein the central portion (18c) of the SMA element (18) within the passage opening (54) is guided. Valve (2, 2 ') after Claim 11 in that the first end portion (16a) of the adjusting element (16) has a lateral slot (56) which opens into the passage opening (54), wherein the slot (56) in particular from a to the passage opening (54) in the direction of movement (B ) of the actuator (16) spaced position on an outer peripheral surface of the first end portion (16 a) of the actuating element (16) to the through hole (54) extends. Valve (2, 2 ') according to one of the preceding claims, wherein within the valve chamber (12), in particular within the flow chamber (24), particularly preferably within the second region (24b) of the flow chamber (24), an actuator (58) is arranged which is rotatably mounted on the intermediate housing (8) and coupled to the adjusting element (16) such that the opening (32) is released to the atmosphere when the actuating element (16) is in the closed position and if the actuating element (16) is in the release position ) is closed. Valve (2, 2 ') according to one of the preceding claims, wherein the valve housing (4), in particular the intermediate housing (8) has a support device which at least partially surrounds the pressure port and / or the consumer port (30) and / or wherein the pressure port and / or the consumer connection (30) has an end section (31a) facing away from the valve chamber (12) and a second end section (31b, 31c) facing the valve chamber (12), the second end section tapering towards a free end (31b, 31c) is narrowed in the circumferential direction at least partially radially. Valve arrangement (100) with a plurality of valves (2, 2 ') designed in particular according to one of the preceding claims, the valve housing (4) respectively surrounding the valve space (12) of a valve (2, 2'), in particular the intermediate housings (108 , 208) and / or housing cover (106) and / or housing bottoms (110), and / or circuit boards (122) are integrally formed. Valve arrangement (100) according to Claim 15 wherein at least a first part of the plurality of valves (2a) has a common pressure port (170, 270) respectively in the valve space (12), in particular in the flow chamber (24), more preferably in a first region (24a) of the flow chambers (24) or a region (182) encompassing the first regions (24a) of the flow chambers (24) or in each case communicating with the valve chamber (12), in particular the flow chamber (24), particularly preferably the first region (24a) of the flow chamber (24 ) or the region (182) via at least one air channel (176) is connected, and / or wherein at least a second part of the plurality of valves (2b) has a common opening for communicating with the atmosphere, in particular in the first region (24a) the flow chamber (24) or a region (184) comprising the first regions (24a) of the flow chambers (24) opens or is connected to the first regions (24a) of the flow chambers (24). Valve arrangement (100) according to Claim 15 , wherein the plurality of valves (2 ') have a common pressure connection (270) which in each case in the valve chamber (12), in particular in the flow chamber (24), particularly preferably in the first region of the flow chambers (12) of the valves (2'. ) or one of the first regions (24a) of the flow chambers (24) comprising region (282) opens or in each case with the valve chamber (12), in particular the flow chamber (24), particularly preferably the first region (24a) of the flow chambers (24) or the region (282) via at least one air channel (276) is connected and wherein each valve (2 ') has a separate opening (32) for communicating with the atmosphere, which opens in particular in the second region (24b) of the flow chamber (24) , Valve arrangement (100) according to one of Claims 16 or 17 wherein the at least one air duct (176, 276) and / or the region (182, 184, 282) comprising the first regions (24a) of the flow chambers (24) are formed by the intermediate housing (108, 208). Valve arrangement (100), according to one of Claims 15 to 18 in which the valve spaces (12) of the plurality of valves (2, 2 ') are separated from the receiving space (34) for the electronic contacting of the printed circuit board (122) by a dividing wall (180, 288), the dividing wall (180, 288) in particular integrally with the intermediate housing (108, 208) is formed, and / or wherein the valves (2a) and the valves (2b) by a partition (188) are separated from each other, wherein the partition wall (188) in particular integrally with the intermediate housing ( 108) is formed, wherein the partitions (180, 188, 288) in the assembled state pneumatically sealed passage opening for the circuit board (122).

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