The invention relates to a valve. A flat slide valve which has two flat slides and two valve plates, wherein a first flat slide interacts with a first valve plate and a second flat slide interacts with a second valve plate is already known. It is also known that a first flow channel is opened or blocked depending on the position of the first flat slide, and a second flow channel is opened or blocked depending on the position of the second flat slide.
The flat slide valve according to the invention has the advantage that the number of components can be minimized. Simplified assembly and, associated with this, cost savings are thus possible. A very compact valve construction is possible. It may be regarded as a further advantage that the actuating forces in a flat slide valve according to the invention are low.
It is particularly advantageous that the flat slide valve has at least three ports, in particular a first port, a second port and a third port. The first and second ports are connected by the first flow channel. The flow channel is arranged between the first and the second port and connects them. The third and the second port are connected by the second flow channel. The second flow channel is arranged between the third and the second port and connects them. It is furthermore advantageous that the flow channels carry liquids or gases, in particular, from one port to another port and vice versa. The position of the flat slide relative to the associated valve seat enables a flow channel to be opened or blocked, in particular allows variation of the flow volume through the flow channel. Thus, the flow volume, in particular the flow rate, can be regulated in a simple manner and/or flow through the flow channel can be prevented.
It should furthermore be regarded as advantageous that the flat slide valve has at least one spring, wherein the spring presses at least one flat slide against at least one valve plate. Through the use of a spring, possible tolerances in the production of the valve plate and of the flat slide are compensated. It should be regarded as a further advantage that a desired blocking of the flow is improved by the pressing of the flat slide against the valve plate. The spring thus increases the sealing effect when the flow channel is blocked, i.e. when flow is to be prevented. Possible leaks resulting in leakage flow can also be minimized.
An advantageous development is that at least one spring is arranged on the pressure side of at least one flat slide. Owing to the pressure difference between the pressure side and the outflow side, forces act on the flat slide. The forces advantageously press the flat slide against the valve plate. By virtue of a spring on the pressure side, the forces due to the medium pressing the flat slide against the valve plate are intensified. It is thus advantageously possible to improve the sealing effect of the flat slide and of the valve plate.
The connecting element acts in a simple manner on the flat slide via the valve plate. The pressure on the flat slide due to the medium to be carried is transmitted to the valve plate. The assembly of the valve can also be simplified. Moreover, the design of the flat slide can be matched to the reduced force, owing to the pressure.
One advantageous embodiment is that an actuator acts on the connecting element. The actuator moves the connecting element and the flat slides connected thereto. The movement of the connecting element is achieved by energizing the actuator. Here, the actuator itself can be designed particularly as an electric motor or as a coil former. The valve can thus be moved in a very simple and inexpensive manner and with the use of a few components. It is furthermore possible to resort to known actuators.
A particularly simple design of the connecting element is achieved if the connecting element comprises a coupling element and a driver element, wherein the driver element interacts with, in particular is connected to, the flat slide. The coupling element and the driver element are arranged substantially at an angle to one another, in particular between 10 degrees and 170 degrees, preferably between 60 and 120 degrees, especially at 90 degrees. Such a design allows advantageous arrangement of the individual components of the flat slide valve. The installation space can thus be reduced. Transmission of the movement from one flat slide to another flat slide is furthermore promoted.
In particular, it is advantageous if the connecting element is arranged on the outflow side of at least one flat slide. The connecting element is situated in the outlet region or in the outlet of the flat slide valve. Thus, the connecting element is situated on the side of the valve member or of the valve seat remote from the pressure. The imposition of a load on the connecting element, especially that owing to the force due to the pressure, by the medium flowing through the valve is minimized. Moreover, the connecting element comes into contact with the medium only when a flow channel is opened. Thus, the use of materials that are appropriate and inexpensive as well as simple to install is possible.
It is advantageous that the flat slide valve has a valve housing, wherein the valve housing comprises at least three valve housing parts, which each have one port. Expenditure for the production of the individual housing parts is minimized through the use of a valve housing consisting of at least three housing parts. In another development of the valve according to the invention, at least two housing parts are designed as common parts. It is thereby possible to simplify production, in particular assembly, and, in association with this, to reduce costs.
It is particularly advantageous that at least one seal is arranged between at least two valve housing parts. In particular, a seal is arranged between the first and the second and/or the second and the third valve housing part. The seal increases the sealing effect between the valve housing parts. The seal furthermore prevents leaks resulting in the medium escaping from the valve housing. The use of the seal makes it possible to simplify production.
It is furthermore advantageous that the flat slide is arranged movably between two valve housing parts, wherein the valve housing parts serve as a guide for the flat slide. No further components serving to guide the flat slide are required. As a result, it is possible to reduce the number of components and assembly steps.
Illustrative embodiments of the invention are shown in the drawings and explained in greater detail in the following description, in which:
A flat slide valve 1 is shown in
If the flat slide valve 1 is used as a liquid valve, the first flat slide 10a and the first valve plate 15a enable and/or block a first flow between the first port 7 and the common flow region 35. The second flat slide 10b and the second valve plate 15b enable and/or block a second flow between the third port 9 and the common flow region 35. The medium in the first flow and the medium in the second flow combine in the common flow region 35. The common flow region 35 is connected to the second port 8 or to part of the second port 8.
For movement of the flat slides 10a and 10b, said slides are connected to a connecting element 30. The connecting element 30 allows simultaneous movement, in particular sliding, of the first flat slide 10a and of the second flat slide 10b. The connecting element 30, in turn, interacts with the movement element 25. A seal 42 prevents one of the media flowing through from escaping from the flat slide valve 1 via the movement element 25. To prevent mixing of the media between the first port 7 and the third port 9, the ports 7, 9 must be sealed off relative to one another. For this purpose, the connecting element 30 passes through an intermediate seal 45. Thus, a complex and expensive solution for sealing off the first port 7 relative to the third port 9 and vice versa is required. Furthermore, the intermediate seal 45 increases the actuating forces of the flat slide valve 1. Moreover, further components are required with the intermediate seal 45.
The connecting element 30 connects the first flat slide 10a to the second flat slide 10b. The connecting element 30 is connected to the movement element 25. In particular, the connecting element 30 and the movement element 25 can be designed as a single part. A seal 42 prevents one of the media flowing through from escaping from the flat slide valve 1 via the movement element 25. The connecting element 30 is situated in the common flow region 35. Here, the connecting element 30 is situated substantially completely in the common flow region 35 of the flat slide valve 1. The connecting element 30 is connected to the first flat slide 10a and the second flat slide 10b and to all further flat slides 10. The connecting element 30 passes through the valve plate 15 to the flat slide 10, in particular the connecting element 30 passes through valve plate 15a to flat slide 10a and through valve plate 15b to flat slide 10b.
The connecting element 30 comprises a coupling element 31 and a driver element 32. The coupling element 31 is connected to at least one driver element 32. In
The movement forces of the connecting element 30 have been lowered by the absence of the intermediate seal 45 as compared with the movement forces in the structure shown in
The first and the second flat slide 10a and 10b are connected positively and nonpositively to one another via a connecting element 30. If one of the two flat slides 10 is moved, the second flat slide 10 is moved, in particular slid, at the same time by means of the connecting element 30. The movement or sliding of the flat slides 10 can be accomplished by means of the movement element 25 or directly by means of the connecting element 30. An additional seal 40a and 40b allows improved sealing of the valve plate 15 with respect to the valve housing 5.
It is possible, in particular, to arrange a spring 20 between the valve housing 5 and the flat slide 10. The spring 20 presses the flat slide 10 against the valve plate 15.
The first flat slide 10a blocks or opens the first flow channel. The first flow channel is situated between the first port (not shown in
The flat slide valve 1 from
Another illustrative embodiment of a flat slide valve 1 according to the invention is shown in
To simplify production, the third valve housing part 53 can be of identical design to the first valve housing part 51, the operation of the two valve housing parts, in particular, being identical. The third valve housing part 53 comprises a third port 9. In particular, the third and the second housing part 53 and 52 are fitted together, adhesively bonded, welded or clipped. Valve plate 15b, flat slide 10b, spring 20b and seal 40b are arranged between the third housing part 53 and the second housing part 52. Valve plate 15b rests against the second housing part 52. Seal 40b is arranged between the second housing part 52, the third housing part 51 and valve plate 15b. Seal 40b prevents possible leaks between the third port 9 and the environment or between the third port 9 and the common flow region 35. Flat slide 10b is pushed, in particular pressed, against valve plate 15b by means of spring 20b. Respective openings are formed in flat slide 10b and valve plate 15b, allowing or blocking flow depending on their position relative to one another.
The operation of the flat slide 10b, the valve plate 15b, the spring 20b and the seal 40b of the third valve housing 53 is therefore identical with that of the flat slide 10a, the valve plate 15a, the spring 20a and the seal 40a of the first valve housing part 51.
The flat slides 10a and 10b are furthermore mounted movably, in particular slidably. By virtue of the slidability, it is possible to move the openings in the flat slide 10 over the openings in the valve plate and to allow flow. However, it is also possible for the openings in the valve plate 15 to be covered by the openings in the flat slide 10 and vice versa. In this case, flow of a medium through the valve plate region 15 and the flat slide region 10 is prevented or blocked. It is furthermore possible to open a flow channel through a lack of overlap between the valve plate 15 and the flat slide 10. In particular, the flow channel can be made up of any number of channels or openings formed as a flat slide 10 interacts with a valve plate 15.
The flat slides 10a and 10b are connected to the connecting element 30. The connecting element 30 comprises a coupling element 31 and at least one driver element 32. The driver element 32 connects the flat slide 10 to the coupling element 31. Here, the driver element 32 passes through the valve plate 15. In
The connecting element 30 is situated substantially, in particular completely, in a region of the valve 1 through which there is a flow. The connecting element 30 is situated in the common flow region 35 of the valve 1. The medium which flows through the first port 7 and the medium which flows through the second port 8 and through the third port 9 thus flows around the connecting element 30. The connecting element 30 is connected to a movement element 25. The movement element 25 is moved by an actuator 60. It is possible, in particular, for the connecting element 30 and the movement element 25 to be designed as a single part.
The actuator 60 can be designed as an electric motor or as an electromagnet. An attraction element is attracted by energizing the actuator 60, e.g. an electromagnet. The attraction element is connected to the movement element 25. In particular, the attraction element and the movement element 25 are embodied as a single part. Thus, when the actuator 60 is energized, the connecting element 30 and hence the flat slides 10a and 10b are moved. A return spring 65 moves the connecting element 30 and the flat slides 10a and 10b connected thereto back into an initial position.
If the actuator 60 is designed as an electric motor, the motor begins to rotate when energized. The rotation of the electric motor is converted into a longitudinal movement by a spindle. The longitudinal movement can be transmitted, in turn, to the connecting element 30 by the movement element 25.
According to another illustrative embodiment, the actuator 60 can be designed as an electric motor. The connecting element 30 acts as a spindle, in the thread of which the driver elements 32a and 32b engage. Rotation of the electric motor causes movement of the driver elements 32a and 32b, in particular in the longitudinal direction.
In
An exploded view of the flat slide valve 1 according to
Another illustrative embodiment of a connecting element 30 for a flat slide valve 1 according to the invention is shown in
The construction according to
According to another illustrative embodiment, the actuator 60 acts directly on a flat slide 10a, 10b. For this purpose, the flat slide 10a, 10b has the attraction element or comprises the attraction element. In particular, the flat slide 10a, 10b can be at least partially composed of material which can be attracted or repelled by the magnetic force of the actuator 60. The force can furthermore be transmitted from the actuator 60 to one of the flat slides 10 via spindles, gearwheels etc. Thus, the force of the actuator 60 acts directly on the flat slides 10a and/or 10b. The connecting element 30 transmits the movement of the first flat slide 10a to the second flat slide 10b and/or vice versa. The direct exertion of force on one or both flat slides 10a, 10b by the actuator 60 promotes uniform distribution of force without a lever arm.
Any number of flat slides 10, valve plates 15, ports and/or springs 20 can be added to the flat slide valve 1.
Number | Date | Country | Kind |
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10 2013 226 586.7 | Dec 2013 | DE | national |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2014/078365 | 12/18/2014 | WO | 00 |