DE2625637A1 - VALVE - Google Patents

Description

DR. JAEGER & GRAMS

DIPL.-CHEM. DR. KLAUS JAESER TELEPHONE: (089) 8 54 27 01; 8 57 4O 8O DIPL.-ING. KLAUS D. GRAMS GRÄFELFING ARIBOSTR. 47 TELEX: 5 21777 laar d 8O31 STOCKDORF · KREUZWEG

HIC-1

HICKMAN ENGINEERING & DEVELOPMENT CO., LTD., Norwich Union Building, Queen Street, Auckland, New Zealand

Valve

The invention relates to a valve of the type mentioned in the preamble of claim 1.

There are known valves which have an inlet chamber and a Have outlet chambers, both of which are covered by slotted plates or perforated plates and delimited from one another. The slotted plate that covers and closes both the inlet chamber and the outlet chamber serves as a Valve seat. A membrane serves as the valve body and moves towards and away from the slits of the slotted plate can be moved. This diaphragm movement controls the flow through the valve (GB-PSen 747

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and 1,039,069; U.S. Patents 3,727,623 and 3,792,720? FR-PS 2 126 704)

A characteristic of the known valve in its various above-mentioned configurations is that the slots or webs of the valve seat extend both over the inlet chamber and over the outlet chamber of the valve. The fluid flowing through such a valve must therefore have both the inlet-side and the outlet-side openings or through slots. This causes an undesirable increase in the flow resistance of the valve and undesirable Flow discontinuities in the medium flowing through the valve. The membrane serving as the valve body must control the flow through the slots or openings in a relatively large area in the known valve. The flow control must take place on the side of the inlet chamber and also on the side of the outlet chamber. the The membrane must therefore have a sealing and controlling effect over a relatively large area.

The known valve can also have a cylindrical design. The slots or openings are in a core is formed which serves as a closing element for both the inlet chamber and the outlet chamber. In order to allow the required flow, these valves must be made relatively long axially. the Slots or differently designed passage openings must have a sufficiently large passage area both in the area of the inlet chamber as well as in the area of the outlet chamber.

The design of the known valves in such a way that the slits or openings covered with the membrane Extending over both the inlet side and the outlet side of the valve still requires a relative large initial opening pressure to remove the membrane from the

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Closure layer on the slots or openings to lift off on the inlet chamber. Such opening response pressures are required when using the diaphragm valves led to numerous problems.

In general, the formation of such valve seat-like shaped slots or passage openings has on the side the inlet chamber and on the side of the outlet chamber in diaphragm valves lead to so many technical difficulties led to the fact that the diaphragm valves are not used to the same extent as other valve types as their simple design should lead one to expect.

In view of this prior art, the object of the invention is to provide a diaphragm valve of the type mentioned at the beginning To create a manner that enables better flow characteristics to be achieved, more effective flow control and has a higher efficiency of the locking and setting parameters. Purpose of the invention is to provide the user with a valve alternative with a new combination of characteristics.

To solve this problem, a valve of the type mentioned is proposed which, according to the invention, the in Patent claim 1 has mentioned features.

The invention thus creates a valve, i "its valve housing an inlet chamber and an outlet chamber are formed. Slots or openings that extend over the outlet chamber extend are formed within the valve housing. A membrane is held inside the valve housing in such a way that that it can interact with the slots or openings. On the side opposite the slots or openings the membrane (hereinafter "outside" of the membrane) a pressure chamber is formed within the valve housing,

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~ r- 2825637

AO

which is limited at least on one side by the membrane. The valve is provided with organs that are pressurized allow the membrane. The application of pressure causes the membrane to move relative to the slots or controls and causes openings to or from them. This increases the flow of the medium to be set controlled or placed through the valve and through the slots or openings in the outlet chamber.

According to a further development of the invention, the valve housing, in which the inlet chamber and the outlet chamber are formed are provided with an inlet chamber which has an open inside. The outlet chamber is on the inside provided with several slots or openings. The membrane serving as the valve body is in turn in Opposite to the valve seat construction of the slots or passage openings arranged and so in the valve housing held that a pressure chamber is formed on its outside inside the valve housing. above the pressure chamber can be subjected to pressure from the outside of the membrane and thereby so movable relative to the slots or openings that the flow of the to be set Medium can be controlled through the slots or openings into the outlet chamber.

The invention is explained in more detail below on the basis of exemplary embodiments in conjunction with the drawings. Show it:

1 shows an exemplary embodiment of the invention in axial section;

Fig. 1a shows a section along A-A in Fig. 1;

Fig. 2 shows the inlet chamber and the outlet chamber

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in section along B-B in Fig. 1;

3 shows an organ provided with slots or through openings for a Valve of the invention;

Fig. 3a shows a section along A-A in Fig. 3;

Fig. 4 shows a further embodiment of the with

Slits or openings provided member for a valve of the invention;

Fig. 5 in axial section a further embodiment of the invention in Section along V-V in Fig. 6;

Fig. 6 in radial section according to VI-VI in Fig.

the embodiment shown in Fig. 5;

7 shows, in axial section, a valve designed as a check valve in FIG Invention in section according to VII-VII in Fig. 8 and

Fig. 8 in radial section according to VIII-VIII

in Fig. 7 the embodiment shown there.

According to one embodiment of the invention, the valve housing have outwardly facing substantially tubular sections which define the inlet chamber and the outlet chamber, respectively of the valve. The valve housing can be produced by casting, pressing, drawing or a corresponding other shaping process made of metal or plastic or other suitable

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"ν

Material be made. The inlet and the outlet of the valve are preferably provided with coupling elements, for example with snap connections, with internal or external threads, with pipe connectors or with Flanges that allow easy and direct connection to pipes or hoses. Such pipelines serve to supply and discharge the medium to be provided.

With the valve of the invention, the flow of any fluid systems or substances can be controlled. So can the valve adjusts the flow of water, oil, air, gases or disperse systems, for example.

In Figures 1, 2 and 3 is a first embodiment of the invention shown. The valve housing can be made of metal, plastic or other material. It can be produced by casting, in particular injection molding, or other customary shaping processes.

The valve housing has an inlet opening 1 into an inlet chamber 3 and an outlet opening 2 of an outlet chamber 4.

The inner end face 3a of the inlet chamber 3 and the inner end face 4a of the outlet chamber 4 are through a partition wall separated from one another and open next to one another into a main valve chamber 20. The walls of the inlet chamber 3 and the outlet chamber 4 as well as the partition wall 5 are designed as curved surfaces, which have a favorable flow uniform transition from the radially standing inlet opening 1 to the axially lying outlet opening 3a of the inlet chamber 3 or from the axially lying inlet opening 4a to the radially standing outlet opening 2 of the outlet chamber 4 guarantee. As a result, a uniform and smooth flow of the medium flowing through the valve is minimal

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Flow losses guaranteed.

In relation to the geometric shape of the valve housing as a whole, the partition wall 5 is not central, but rather in the Way arranged displaced towards the inlet side of the valve that the inlet chamber 3 has a smaller volume than the Has outlet chamber 4. The outlet side 3a of the inlet chamber 3 is designed as a free opening, the free one Cross-section has practically the same free passage area as the free passage area, which is of the Slots or openings 11, which over the inlet side 4a the outlet chamber 4 are arranged, are provided. Preferably it is from the slots or openings 11 made available free passage area slightly larger than the open passage area 3a of the inlet chamber 3. The advantages resulting from this are explained in more detail below.

In principle, however, the partition 5 can also be arranged essentially centrally to the inlet chamber 3 and outlet chamber 4 so that both chambers have at least approximately the same volume and the same cross-sections.

The valve housing is closed with a valve cover 7, for example by screws 8 and bolts or by other corresponding fastening means can be releasably attached to the valve housing.

In the embodiment shown in Figures 1 and 1a a membrane 9 is held below the cover 7 in the valve housing above the inlet chamber 3 and the outlet chamber 4. The membrane is preferably between the upper edges of the walls of the inlet chamber and the outlet chamber and clamped on the underside of the valve housing cover. A tight and mechanically firm clamping can also guaranteed by washers and sealing elements

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will. Between the outside of the membrane 9 and the inside of the housing cover 7 is a valve housing Pressure chamber 30 is formed. This chamber is through the valve housing cover with a pressure above a corresponding pressure Pressure connection 46 can be acted upon. By the application of pressure, the membrane 9 is on the inlet chamber and moving the outlet chamber to or from them. In doing so, it is applied in particular to the slots or openings Moved to or lifted from the outlet chamber 4.

The membrane 9 consists of a suitable flexible material, for example elastic plastic, rubber or synthetic elastomers.

Fig. 2 shows in plan view the inner end surface 3a of the inlet chamber 3 and the inner end surface 4a of the outlet chamber 4, which open into the main valve chamber 20. The inner end surface 3a of the inlet chamber 3 is contiguous as a single one large opening 10 with a preferably semi-circular geometry, which opens directly into the main valve chamber. The inner end surface 4 a of the outlet chamber 4 is provided with a plurality of elongated slots 11 separated from one another. The opening 10 which is free over its entire passage area is not arranged and designed symmetrically to the surface defined by the envelope of all slots 11, but smaller than this. This large, uniform opening 10 is separated from the area of the slots 11 by a separating web separated, which forms the upper end or edge surface of the partition wall 5.

In the manner shown in FIG. 1 a, the slots 11 are preferably designed in such a way that they extend in the direction of flow widen. In the illustration of FIG. 1 a, the slots 11 widen from their upper edge to the lower edge. With this measure, the flow

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noise of the substance flowing through the valve, in particular the noise occurring when flowing through the slotted plate, be significantly dampened. In addition, through this Expansion of the slots 11 in the direction of flow Noticeably lower flow resistance.

In the following, for the sake of simplicity, the invention is based only on slot-shaped passage openings on the inlet side 4a of the outlet chamber 4. It is readily apparent to the person skilled in the art that this Passage openings should not only be designed as elongated slots lying parallel to one another must, but in principle can have any geometric design. In particular, you can use the Have the form of juxtaposed circular openings. For example, the slots can also lie transversely or be arranged in certain patterns.

In the embodiment of the invention, as shown in Figures 1, 1a and 2, these are continuous free large opening 10 and the slots 11 in one piece with and molded in the valve housing. Alternatively, however, both inner axially lying end faces 3a and 4a of the inlet chamber 3 or the outlet chamber 4 is open over the entire cross section than, for example, essentially semicircular openings may be formed, which then by a correspondingly formed cover plate or an orifice plate, which serves as a valve seat, is covered are. Such a valve seat plate can then, for example, have the same geometric design with the opening 10 and have the slots 11 and the web 12, as shown in Fig. for the one-piece housing is shown. The separately designed valve seat plate can also be made from Metal, plastic or another material exist. It is between the axially frontal edge surfaces of the

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Inlet chamber, outlet chamber, partition and the Valve housing cap clamped in a detachable and exchangeable manner using sealing elements and spacer washers. Such a design enables the valve characteristics to be changed quickly and easily.

In FIG. 3, such a substantially rectangular and preferably approximately square is shown in plan view Plate 15 provided with slits or openings is shown. the Plate 15 has on one side a continuously free large opening 16, which is preferably semicircular is trained. A separating web 18 of the plate 15 is arranged in such a way that it is designed in such a way that it is axially frontal End face of the partition wall 5 corresponds. The plate points on the opening 16 in relation to the web 18 opposite side a plurality of elongated slots 11 arranged parallel to one another.

In use, the plate 15 shown in FIG. 3 is over the inner open ends 3a and 4a of the inlet chamber 3 or the outlet chamber 4 is placed in such a way that the continuously free opening 16 on the inner opening 3a of the inlet chamber 3 is substantially in shape and size with this inner open side surface of the inlet chamber 3 coincides while the slots or openings 11 above the inner end face 4a, that is to say the inlet side, of the outlet chamber 4. They are used to control the flow of the medium through the valve in connection with the membrane 9, which can interact with the slots or openings 11.

The through opening 16 in the plate 15 is shown in FIG the way shown in Fig. 3 is formed asymmetrically to the basic figure of the plate, something from the center of the Plate offset against the edge. In this design, it corresponds to the asymmetrical one in relation to the valve housing

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smaller inlet chamber 3 (Fig. 1).

In the manner shown in Fig. 3a, the plate 15 is provided with slots 11 which widen in the direction of flow, whose free area on the entry side is smaller than its free area on the exit side of the plate is. This reduces the flow noises generated by the medium in the valve. At the same time will this also reduces the flow resistance that the valve as a whole opposes to the flowing medium.

Another embodiment of the member 25 serving as a valve seat plate and provided with slots or openings is shown in Fig. 4 in plan view. The plate is as a slotted plate 25 with a plurality of elongated slots 11 so designed so that it can be detachably attached over the open inner end surface 4 a of the discharge chamber 4. the inner end surface 3a of the inlet chamber 3 remains with this Formation of the plate 25 completely free. Like the plate 15 shown in FIG. 1, the one shown in FIG Slotted plate 25 made of metal or plastic or other material. Also are those formed in the plate 25 Slits 11 designed so that their cross-section widens in the direction of flow. They are the same Advantages, as described above, can be achieved, namely noise damping and a reduction in flow resistance .

When the valve is used, the fluid to be adjusted flows through the inlet opening 1 into the inlet chamber 3, from there through the inner open end 3a of the inlet chamber or through the also continuously free opening 10 in the Valve housing or the continuously free opening 16 in a cover plate 15 in the main valve chamber 20. The Fluid then passes over the upper edge 12 of the partition wall or over the partition web 18 of the plate 15 and through the

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Slots or openings 11 over the inner end 4a of the Auslasskaitimer 4 into and through them out of the outlet opening 2 out of the valve.

When pressure is applied to the membrane 9 via the pressure chamber 30, the membrane 9 is down onto the slots or Openings 11, which cover the entrance to the outlet chamber 4, moved. Depending on the strength of the membrane 9 exerted pressure, the inlet to the outlet chamber 4 of the valve is hermetically or only partially closed. As a result, the volume flow of the medium flowing through the outlet chamber 4 can be precisely adjusted. If the membrane 9 is tightly sealed against the application of a pressure which is structurally predetermined in terms of the amount the passage openings or slots 11 are pressed, every flow of the medium to be set through the valve is completely interrupted «

In the design of the valve described above, the membrane 9 is of course also on the continuous free opening with which the inlet chamber opens into the main valve chamber. Thereby the membrane needs not to close this opening in a sealing manner, see above that when the valve opens, either no opening pressure at all or only a negligibly low opening pressure due to the Medium on the membrane is required.

In the manner shown in FIG. 1, according to a further development According to the invention, the inlet chamber 3 is preferably dimensioned smaller than the outlet chamber 4. This can it can be achieved that the continuously open end surface 3a of the inlet chamber 3 has practically the same free passage cross section has like him the slots or openings which are above the inlet side 4a of the outlet chamber 4 are formed, have. After further training the

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Invention is the total free passage area that is made available by the slots 11 in front of the outlet chamber 4, preferably even larger than which is available through the continuously free and open opening 3a on the outlet side of the inlet chamber 3 provided passage area.

If the inlet chamber 3 and the outlet chamber 4 were dimensioned the same, this would have to lead to the open Inside 3a of the inlet chamber 3 has a larger clear passage cross-section than the passage openings or have slots 11 over the entrance to the outlet chamber 4 as a whole. Such a sizing easily leads to the build-up of unnecessary flow resistances and back pressures within the valve. The slots or openings Above the inlet side of the outlet chamber 4, opposite the open side 3a of the inlet chamber 3, act as a dust cover or orifice plate. This throttling effect can be completely switched off when the partition wall 5 is within the Valve housing is not arranged centrally, but shifted to the inlet side of the valve. This will make the The inlet chamber 3 is designed to be smaller than the outlet chamber 4 and can open the inner axially end-face opening 3a the inlet chamber 3 are formed practically with the same free passage area as they are through the Slots 11 overall on the inlet side to the outlet chamber is made available. The volume flow of the flowing through the inlet chamber into the main valve chamber 20 The medium to be placed can in this asymmetrical design without interference and without congestion via the slots or orifices 11 flow into the outlet chamber 4, without a dynamic pressure with all its technical disadvantages building up in front of the valve seat.

According to a development of the invention are both in the

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Inlet chamber as well as in the outlet chamber additional Outlet openings 40 are formed, to which lines, for example pipelines 45, are connected. These Branch lines 45 are preferably connected to the pressure connection in the valve housing cap 7. The branch lines 45 are furthermore preferably connected to an additional valve, a control valve, or other actuating elements 47 connected so that the valve can be operated in a closed control loop with self-regulation. The limbs such a control loop are preferably complete and as a structural unit with the valve within the valve housing arranged so that the valve has a self-regulating characteristic with self-adjusting capability during operation having.

In Figures 5 and 6, a further embodiment of the invention is shown, namely a normal Axial flow valve. The valve housing can in principle be made of any material, preferably made of Metal or plastic, exist and is "in itself known Way shaped. The essentially cylindrical valve housing 50 is designed to be open on both sides, and although with an inlet opening 51 and an outlet opening. The two ends of the valve housing 50 are preferably provided with coupling elements for the connection lines, for example with snap connection elements, threads or flanges.

In the valve housing 50, a valve core 55 is arranged with a substantially cylindrical design. The outside diameter of the core 55 is slightly smaller than the clear inner diameter of the valve housing. He is in the manner shown in Figures 5 and 6 coaxially aligned with the valve housing. The core 55 is on its end face facing the inlet opening of the valve

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area 56 closed. This end face 56 is preferably convex in the shape of a spherical cap or in some other way Designed to be aerodynamically favorable. What is essential, however, above all, is that the valve core 55 is on its end face 56 is closed as seen from the inlet opening 51 and the inlet chamber 57 of the valve. The opposite The end face 60 of the valve core is open and is in free communication with the outlet chamber 58 of the valve housing.

The jacket of the valve core 55 is provided with a plurality of slots 65 that are separated from one another. These are preferred evenly distributed over the entire circumferential surface, parallel to one another and axially aligned. Instead of this However, slots 65 can also have passage openings of any other shape in the jacket surface of the core 55 be formed, in particular with through openings circular cross-section.

The valve core 55 formed in this way lies between the inlet chamber 57 and the outlet chamber 58 of the valve.

The valve core 55 is surrounded by a membrane 70 designed as a sleeve. The membrane sleeve is in recesses 71 supported in the wall of the valve housing, between the core 55 and the inner wall 50a of the Valve housing 50. The inner wall 50a of the valve housing 50 has a cylindrical recess in the axially central region 50b, whereby within the valve housing 50 between its inner wall 50a and the outer wall of the membrane sleeve 70, which is arranged around the core 50, a cylindrical ring-shaped pressure chamber 80 is formed.

via a threaded connection piece 85 or a corresponding one differently designed nozzles can the pressure chamber 80 over

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a pressure line, not shown in the figures, can be acted upon with a pressure fluid. Depending on the degree of In this case, pressure is applied to the membrane 70 onto the slots or openings 65 formed in the core 55 Moved to and thereby the flow through the valve can be controlled.

During operation, the medium to be set flows first into the inlet chamber 57 of the valve, then onto the concave one closed wall 56 of the core 55 and via this through the slots or openings 65 into the interior of the core 55 into and from there, through its rear open end face 60 into the outlet chamber 58.

When the pressure chamber 80 is charged with a pressure fluid, for example a hydraulic fluid or air, leads the bearing on the outer surface of the membrane 70 Pressure to the fact that the membrane is pressed more or less strongly in the direction of the slits 65. Through this the slits 65 are partially or completely covered by the membrane and finally hermetically sealed. In this way, the flow through the valve can be freely set and controlled. Each on the pressure chamber 80 pressure to be given can in a manner known per se by appropriate regulating and / or control elements take place. When a certain pressure is applied to the membrane 70, it is completely sealed to the Slits or openings 65 are pressed so that the medium does not get into the inlet chamber 57 of the valve can pass through the slots or openings 65. The valve is therefore completely blocked. When it slackens of the pressure, the medium can pass under the membrane and through the slits or openings 65 into the Inside of the core 55 and on its rear side through the open end face 60 out of the valve again.

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stream. The flow rate is a function of the control pressure applied to the pressure chamber 80. Depending on Amount of this pressure, the individual slits are more or less tightly closed, so that a more or less . less large flow is possible. The degree of sealing of the individual passage slots can be can be quite different at a certain control pressure below the closing pressure. This changes does not mean that the valve is continuous between fully closed and fully open states and can be adjusted as required by adjusting the control pressure.

The exemplary embodiment of the invention shown in FIGS. 7 and 8 is a valve with a non-return characteristic.

The valve housing 50 corresponds to the housing shown in FIGS. In the valve housing 50 is a one-sided open cylindrical valve core 55 supported. The open end face 90 of the core 55 is the inlet chamber 57 of the Facing the valve housing. The closed end face which is convex when viewed from the outlet side of the valve of the valve core 55 faces the outlet chamber 58 of the valve housing. A diaphragm 70 is within the valve housing supported around the core 55. The inside diameter is the same as in the embodiment example described above the membrane sleeve in the relaxed state of the membrane is slightly larger than the outer diameter of the core 55, just so much larger that in the relaxed state of the membrane a free flow through the Valve is guaranteed. The membrane 70 is arranged concentrically and coaxially around the core 55. The membrane cuff 70 is retained within the valve housing, for example by conical clamping elements. The inner wall of the cylindrical valve housing 50 is in the area of

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- vs- -

axially central area provided with a cylindrical recess. In this area is between the Inner wall 50a of the valve housing and the outer wall of the membrane 70, a cylindrical ring-shaped pressure chamber 80 is formed.

The valve core 55 has a plurality of slots or passage openings 65, which are arranged distributed over the jacket of the cylindrical core and a connection between the interior and the vicinity of the core 55.

One branches off the wall of the outlet chamber 58 of the valve Return flow line 100, which opens into the pressure chamber 80 (Figures 7 and 8).

When the valve is used, the medium to be set flows through it in the direction of arrow A shown in FIG. The medium enters the core 55 through the inlet opening at the open end face, then flows through the slots or openings 65 in the jacket of the core 55 and at the closed convex End face 91 of the core 55 on the outside past into the outlet chamber 58 of the valve, from which it leaves the valve. When a pressure reversal occurs in the flowing medium, it flows in the direction of arrow B shown in FIG into the outlet chamber 58 of the valve. The medium hits the closed convex face 91 and tries past this through the slots or passage openings 65 into the interior of the valve core to get.

However, the backflowing medium also reaches the pressure chamber 80 via the backflow channel 100 in the pressure chamber 80 of the closing pressure acting on the membrane 70 increased so much that the membrane 70 against the

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Slots or openings 65 in the core 55 are pressed to form a seal and thus a backflow of the medium against the normal flow direction A is prevented. Included able in the direction of arrow A onto the slots 65 of the core 55 from the inside pressing medium in the Pressure chamber 80 built up and acting on the membrane 70 dynamic pressure not to be overcome as long as the pressure of the medium in the direction of arrow B is greater than the pressure of the medium in the direction of arrow A. the During this time, membrane sleeve 70 remains firmly on the entire surface of the valve core pressed so that no backflow can occur. The pressure generated by the medium in the direction of arrow A acts from the interior of the core 55 only through the slots or openings 65 onto the membrane 70, while the back pressure, which is in the much longer and continuously formed all around pressure chamber 80 is built up, acts practically on the entire outer surface of the membrane sleeve 70. When occurring even a slight overpressure of the flowing medium in the direction of arrow B is therefore a safe one Closing the valve in the sense of a non-return valve is sufficiently guaranteed at all times, since the direction of the arrow A acting force component can attack the membrane much less effectively.

When the reverse flow situation is eliminated, the medium also flows out of the pressure chamber 80 via the channel 100, so that the pressure chamber 80 is depressurized. The in the direction of arrow A from the flowing medium on the membrane 80 The pressure exerted is greater than the residual pressure remaining in the pressure chamber. The membrane 70 is made of the Lifted closed position or lifts itself out of the closed position, depending on the design and setting, so that

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the medium can flow freely through the valve in the intended flow direction.

In all embodiments of the valve of the invention, the flowing medium can in principle be any fluid system be, for example air, water, oil, fuels, gases or disperse systems.

Even in the embodiment of the valve shown in FIGS. 5 to 8 with a cylindrical valve seat (cylindrical Valve core 55), the slots or passage openings 65, as described above, are preferably designed in such a way that that their cross-section is in the direction of flow of the medium widened (not shown in the figures).

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Claims (12)

2625837 claims 1. Valve with a valve housing, in which an inlet chamber and an outlet chamber are formed and one as a valve body serving membrane / which can interact with a corresponding valve seat member are arranged, characterized in that over the outlet chamber within the valve housing slots or Passage openings are arranged over which the membrane is also arranged within the valve housing in such a way that that it delimits a pressure chamber with its outside, and that organs for pressurizing the membrane are provided, via which the membrane can be moved relative to the slots or passage openings in such a way that that thereby the flow of the medium to be provided through the valve and through the slots or passage openings is controllable through into the outlet chamber. 2. Valve according to claim 1, characterized in that the inner end of the inlet chamber in the flow direction It is designed to be unrestrictedly open that slots or through openings above the inlet of the outlet chamber are designed that the membrane is located above the outlet opening on the inside in the direction of flow the inlet chamber and above the inlet opening the outlet chamber within the valve housing to form 7ü9oU / 0SÜ9 INSPECTED a pressure chamber surrounding the membrane on the outside is, via the pressure connection of which the membrane can be pressurized in such a way that it allows the flow through the Place openings or slits over the outlet chamber can. 3. Valve according to one of claims 1 or 2, characterized by a substantially radial standing partition in the valve housing, which separates the inlet chamber from the outlet chamber, by an element that on one side with slots or through-openings and on the opposite side with a continuous one is provided free opening and is held in the valve housing that the continuously free Opening is above the inlet chamber, while the slots or openings are above the outlet chamber. 4. Valve according to one of claims 1 or 2, characterized characterized in that the slots or passage openings are formed in one piece in the valve housing are. 5. Valve according to one of claims 1 or 2, characterized in that the slots or passage openings are formed in a plate manufactured independently of the housing, which only covers the open inlet side of the outlet chamber, while the 709314/0809 - »- 2825637 ■ j * is formed continuously open in the flow direction inner end of the inlet chamber. 6. Valve according to one of claims 3 to 5, characterized in that the substantially radially standing partition axially not in the middle of the valve housing, but to the inlet side of the valve housing is arranged shifted so that the inlet chamber is smaller than the outlet chamber and that the free passage opening of the inner end of the inlet chamber in the direction of flow is essentially the same Has surface like the free passage area of the slots or passage openings on the inlet the outlet chamber as a whole. 7. Valve according to one of claims 1 to 6, characterized in that the valve has a Valve housing cover with a connection piece for pressurizing the pressure chamber contains that both the inlet chamber and the outlet chamber are each provided with the mouth of a branch line, in a closed control loop with the pressurization organs and at least one regulating actuator are connected so that the flow of the medium to be provided is regulated by the valve and can be modulated. 7098U / 0609 8. Valve according to one of claims 1 to 6, characterized in that the valve housing is provided with a valve housing cover in which a connection element is formed for connecting pressure-applying elements, via which the pressure chamber in the valve housing can be acted upon with a pressure medium and the movement of the membrane is so adjustable and controllable relative to the slots or passage openings. 9. Valve according to one of claims 1 to 8, characterized characterized in that the slots or passage openings extend in the direction of flow have steadily increasing cross-section. 10. Valve according to claim 1, characterized by a substantially cylindrical on both sides open valve housing, by a substantially cylindrical valve core, which is coaxial in the valve housing is arranged and whose outer diameter is smaller than the inner diameter of the valve housing, through several continuous slots or passage openings arranged in the jacket of the valve core through which the fluid to be set through the valve can enter or exit the valve core through it, by a membrane designed as a sleeve, which is attached around the valve core to the inner wall of the valve 7Q98U / 0609 housing is held that between the outer wall of the membrane and the inner wall of the housing a pressure chamber is formed by organs via which the pressure chamber can be pressurized by one of the inlet chambers of the valve facing closed end face and one facing the outlet chamber of the valve open end face of the valve core so that the slots or passage openings in the valve core are in the direction of flow in front of the outlet chamber of the valve, so that the fluid to be set by the valve first enters the inlet chamber of the valve through which closed end face of the valve core flows and then through the slots or passage openings in the valve core through into the interior of the valve core and out of this through its downstream open end face flows through into the outlet chamber and through this out of the valve, wherein the Flow through the valve on this flow path by pressurizing the pressure chamber and the resulting relative movement of the membrane with respect to the slots or openings in the Valve core is adjustable. 11. Valve according to claim 10, characterized in that that the open face of the valve core of the inlet chamber of the valve and the closed face 7098U / 0609 face the outlet chamber of the valve, that a return channel connects the outlet chamber of the valve with the pressure chamber, so that in the target flow direction the fluid to be set enters the valve core through the open end face through which Slots or openings in the jacket of the Valve core emerges from this through and over the closed end face of the core from and through the outlet chamber of the valve flows out, while in the blocking direction when the medium to be set back flows of the valve the medium passes through the return channel into the pressure chamber and in this one Non-return pressure builds up, which presses the membrane onto the slots or passage openings in a sealing manner, so that a reverse current in the reverse direction is excluded. 12. Valve according to one of claims 6 to 9, characterized in that the cross-sectional area of the continuously free opening over the inner end of the inlet chamber in the flow direction is slightly smaller is than the cross-sectional area of the free passage area, which is before the inlet of the outlet chamber of the Slits or through openings is provided overall. 709814/0609