Electromagnetically actuated valve and assembly for such a valve

Abstract

Assembly (1) for an electromagnetically actuated valve comprising a movable armature (2) and a shut-off element (5) connected to the armature (2), wherein the armature (2) has a recess (3) with an inner wall (4) in which at least a partially elastic connection area (11) of the shut-off element (5) is arranged, wherein the elastic connection area (11) has an outer contour (14) which is adapted to the inner wall (4) such that the shut-off element (5) and the armature (2) are force-fit together, characterized in that the recess (3) in the armature (2) has an insertion ramp, wherein the elastic connection area (11) of the shut-off element (5) has two arms (8) which bear at least partially against the inner wall (4), wherein the two arms (8) are formed integrally with a base body (12) of the shut-off element.wherein a cutout (9) is arranged in the connection area between the arms and wherein the arms (8) have a first end which is connected to the base body (12) and a second end which is connected to a common connecting piece (10).

Description

State of the art

[0001] The present invention relates to a valve with an electromagnet, an armature movable by means of the electromagnet and a shut-off element connected to the armature. Furthermore, the invention relates to an assembly for an electromagnetically actuated valve comprising a movable armature and a shut-off element connected to the armature.

[0002] Such electromagnetically actuated valves typically have an armature that can be moved by means of the electromagnet. A shut-off device is usually arranged on the armature, allowing a fluid path of the valve to be selectively opened or closed. Furthermore, it may be possible to move the shut-off device to an intermediate position in which the fluid path is only partially open.

[0003] From DE 197 12 590 A1, it is known that the armature is designed as the closing element carrier of the valve needle, with the end region of the armature having a spherical valve ball. DE 41 09 868 A1 discloses a valve with a tubular armature having a spherical valve closing element, which is coupled to the armature via a connecting tube and closes against the fixed valve seat. DE 43 04 440 B4 discloses a thin foil slide that is guided between two housing plates and covers or releases the inlets / outlets of a valve via openings. DE 102 56 734 A1 discloses a magnetic armature that actuates a valve closing element via a plunger.

[0004] To attach the shut-off valve to the anchor, part of the valve is typically inserted into a recess in the anchor. The valve is usually secured to the anchor using a threaded stud that is screwed into a threaded hole in the anchor. The threaded hole opens into the recess, allowing the stud to clamp the shut-off valve securely in place. This creates a permanent connection between the valve and the anchor. However, the fact that several assembly steps are required to attach the valve to the anchor has proven to be a disadvantage. Disclosure of the invention

[0005] The object of the present invention is to enable the mounting of a shut-off device on an anchor with a reduced number of assembly steps.

[0006] To solve the problem, an assembly for an electromagnetically actuated valve is proposed, comprising a movable armature and a shut-off element connected to the armature, wherein the armature has a recess with an inner wall in which at least partially an elastic connection area of ​​the shut-off element is arranged, wherein the elastic connection area has an outer contour that is adapted to the inner wall in such a way that the shut-off element and the armature are positively connected to each other.Furthermore, the elastic connection area of ​​the shut-off device has two arms that at least partially abut the inner wall, wherein the two arms are integrally formed with a base body of the shut-off device, wherein a cutout is arranged in the connection area between the arms, and wherein the arms have a first end which is connected to the base body and a second end which is connected to a common connecting piece.

[0007] A valve with an electromagnet, an armature movable by means of the electromagnet and a shut-off device connected to the armature further contributes to solving the problem, wherein the armature has a recess with an inner wall in which at least partially an elastic connection area of ​​the shut-off device is arranged, wherein the elastic connection area has an outer contour which is adapted to the inner wall in such a way that the shut-off device and the armature are positively connected to each other.

[0008] During the assembly of the inventive assembly and the inventive valve, the elastic connection area of ​​the shut-off device is positively connected to the recess of the anchor as the connection area is inserted into the recess. An interference fit is created between the connection area of ​​the shut-off device and the inner wall of the anchor, thus securing the shut-off device and the anchor to one another. The connection area can be continuously inserted into the recess in the anchor to a desired position. No further assembly steps are required to fix the connection area within the recess. In particular, the insertion of a threaded pin to fix the shut-off device to the anchor is unnecessary. Consequently, the assembly of the shut-off device to the anchor requires fewer assembly steps.

[0009] The elastic connection area of ​​the shut-off device is designed to have two arms that at least partially rest against the inner wall. The two arms are preferably designed to be flexible such that, in a separation position where the connection area of ​​the shut-off device is located outside the recess of the anchor, they are spaced further apart than in a connection position where the connection area is located inside the recess of the anchor.

[0010] The two arms are formed integrally with the base body of the shut-off device, with a cutout in the connection area between the arms. This cutout provides a space into which the arms of the connection area can be pressed due to the interference fit.

[0011] The arms have a first end that is connected to the base body and a second end that is connected to a common connecting piece. This design offers the advantage that the arms of the connecting section can deform like a bending beam when the connecting section is inserted into the recess.

[0012] According to an advantageous embodiment of the invention, the outer contour of the connection area, in particular the outer contour of the arms, is corrugated or serrated. The corrugated or serrated outer contour reduces frictional resistance when inserting the connection area into the anchor, thus enabling insertion of the connection area into the anchor with reduced force.

[0013] It has proven advantageous if the recess in the anchor has an insertion ramp. The connecting area can slide along the insertion ramp when being inserted into the recess and is thereby centered on the recess. Preferably, the insertion ramp is shaped like a funnel.

[0014] According to a preferred embodiment of the invention, the shut-off device is a gate valve. The flow through a fluid path can be selectively either completely blocked or opened via the gate valve.

[0015] It is particularly preferred if the slide valve is designed as a plate-shaped flat slide valve. The flat slide valve can have a main extension plane that is oriented transversely, and in particular perpendicularly, to a fluid path of the valve.

[0016] According to an advantageous embodiment, the shut-off device, in particular the gate valve, has a through-opening. The through-opening allows the flow of a fluid. The through-opening can have an opening width that extends in a direction perpendicular to the direction of movement of the shut-off element. Preferably, the through-opening is designed such that its opening width varies along the direction of movement of the shut-off device.

[0017] Further details, features, and advantages of the invention will become apparent from the drawings and from the following description of preferred embodiments with reference to the drawings. The drawings merely illustrate exemplary embodiments of the invention, which do not limit the inventive concept. Brief description of the characters The Fig. Figure 1 shows a sectional view of an assembly according to an embodiment of the invention. The Fig. 2 shows the anchor of the assembly made of Fig. 1 in a sectional view. The Fig. 3 shows the shut-off device of the assembly. Fig. 1 in a side view. The Fig. Figure 4 shows a valve according to an embodiment of the invention. Embodiments of the invention

[0018] In the various figures, identical parts are always marked with the same reference symbols and are therefore usually only named or mentioned once.

[0019] In the Fig. Figure 1 shows a cross-sectional view of an assembly 1 for a valve 20. The section plane of this view is perpendicular to a fluid channel that can be controlled by the assembly. The assembly 1 includes an armature 2, which can be electromagnetically moved within the respective valve 20. Another component of the assembly 1 is a shut-off device 5, which in this embodiment is designed as a plate-shaped slide valve. The assembly 1 can be prefabricated during the assembly of a valve, with the shut-off device 5 being connected to the armature 2. The position of the shut-off device 5 relative to the armature 2 can be continuously adjusted, i.e., independently of any predefined detent positions. Therefore, precise adjustment of the shut-off device 5 to the armature 2 is possible.

[0020] The representations in Fig. 2 and Fig. Figure 3 shows the anchor 2 and the shut-off device 5 each individually, i.e., in a separate, unconnected position.

[0021] To enable the mounting of the shut-off device 5 to the anchor 2 with the fewest possible assembly steps, the anchor 2 has a recess 3 with an inner wall 4 in which an elastic connection area 11 of the shut-off device 5 is arranged. The elastic connection area 11 has an outer contour that is adapted to the inner wall 4 such that the shut-off device 5 and the anchor 2 are positively connected. The elastic connection area 11 is secured to the inner wall 4 of the anchor 2 by an interference fit. No further securing means, such as a locking pin or threaded stud arranged transversely or perpendicular to the insertion direction of the connection area 11 into the recess 3, are required.

[0022] The representation in Fig. It can further be seen from Figure 1 that the elastic connecting area 11 of the shut-off device 5 has two arms 8. The arms 8 are separated from each other by a cutout 9 in the connecting area 11. The two arms 8 are designed to be flexible in such a way that, in a separation position in which the connecting area 11 of the shut-off device 5 is located outside the recess 3 of the anchor 2, they are spaced further apart than in the position shown in Figure 1. Fig. Figure 1 shows the connection position in which the connection area 11 is arranged within the recess 3 of the anchor 2. In this position, the arms 8, when in contact with the inner wall 4, can bend into the area of ​​the cutout 9. The arms 8 run parallel and are each connected at one end to a base body 12 of the shut-off device 5. A second end of both arms 8 is connected to a common connecting piece 10. Thus, the ends of the arms 8 are fixed in such a way that, when the connection area 11 is inserted into the recess, essentially a central section of the arms between the two ends deforms and / or bends towards the cutout 9.

[0023] The arms 8 of the connection area 11 are formed integrally with the base body 12 of the shut-off device 5. Furthermore, the arms 8 are also formed integrally with the connecting piece 10.

[0024] The recess 3 in the anchor 2 is designed as a bore, in particular as a cylindrical bore. The recess 3 has a first opening through which the connecting section 11 of the shut-off device 5 can be inserted into the recess 3. A second opening is provided on the opposite side of the recess from the first opening, the width of the second opening being identical to the width of the first opening. Alternatively, the widths of the first and second openings can be different. According to a further alternative, the recess can be designed as a blind hole. In such an alternative design, a continuous inner wall acting as a stop for the connecting section 11 can be provided opposite the first opening.

[0025] In the area of ​​the first opening, an insertion ramp can be arranged at the recess 3. This insertion ramp can be designed as a funnel-shaped area that widens from the interior of the anchor 2 to the surface of the anchor 2. The insertion ramp allows the connecting area 11 to automatically center itself on the recess 3 when inserted into the recess.

[0026] The connecting area 11 has a corrugated or serrated outer contour 14, so that the outer contour 14 of the connecting area 11, in particular the outer contour of the arms 8, does not lie completely against the inner wall 4 of the recess 3. This reduces the frictional resistance when inserting the connecting area 11 into the anchor 2 to a level that allows the connecting area 11 to be inserted into the anchor 2 with a force that ensures that the shut-off element 5 does not deform undesirably when inserted into the recess 3.

[0027] The base body 12 of the shut-off device 5 has a sealing surface 6, which is designed as a continuous plate. The sealing surface 6 can be positioned within the fluid channel to completely prevent the flow of fluid. Adjacent to the sealing surface 6, the base body 12 has a passage opening 7. The passage opening 7 can be positioned within the fluid channel to partially or completely open the fluid channel, allowing fluid to flow through the entire cross-section of the passage opening 7 or through a portion thereof.

[0028] In the Fig. Figure 4 shows a valve 20, which, in addition to the one in Fig. The assembly 1 shown in Figure 1 has an electromagnet 13 by means of which the armature 2 of the assembly 1 can be moved. A gate valve 5, designed as a flat slide valve, is connected to the armature 2, as described above. For connection purposes, the armature 2 has a recess 3 with an inner wall 4 in which an elastic connection area 11 of the gate valve 5 is arranged. The elastic connection area 11 has an outer contour that is adapted to the inner wall 4 such that the gate valve 5 and the armature 2 are positively connected to each other.

[0029] The armature 2, and thus also the shut-off device 5, can be moved continuously in a direction of movement R by means of the electromagnet 13. This makes it possible to adjust the position of the shut-off device 5 within a fluid channel (not shown in the figure) such that the fluid channel is either completely shut off, variably open, or completely open. For example, the shut-off device 5 can be in a lowered shut-off position, as shown in Fig.As shown in Figure 4, the shut-off device 5 can be arranged in the fluid channel such that the blocking surface 6 completely closes off the fluid channel. In a variable intermediate position, the shut-off device 5 can be arranged in the fluid channel such that it is partially open. For example, in the intermediate position, the cross-section of the fluid channel can partially overlap with the cross-section of the passage opening 7, allowing fluid to flow through a portion of the passage opening 7. Finally, the shut-off device 5 can be moved into an open position in which the cross-section of the passage opening 7 is completely within the fluid channel, allowing fluid to flow through the full cross-section of the passage opening 7. Reference symbol list 1 assembly 2 anchors 3 Exclusion 4 Inner wall 5 Shut-off device 6 Restricted area 7 Passage opening 8 Arm 9 Excerpt 10 Connecting piece 11 Connection area 12 basic shapes 13 Electromagnet 14 Outer contour 20 valve R direction of movement

Claims

[1] Assembly (1) for an electromagnetically actuated valve comprising a movable armature (2) and a shut-off element (5) connected to the armature (2), wherein the armature (2) has a recess (3) with an inner wall (4) in which at least partially an elastic connection area (11) of the shut-off element (5) is arranged, wherein the elastic connection area (11) has an outer contour (14) which is adapted to the inner wall (4) in such a way that the shut-off element (5) and the armature (2) are force-fit together, characterized by, that the recess (3) in the anchor (2) has an insertion ramp, wherein the elastic connecting area (11) of the shut-off element (5) has two arms (8) which at least partially abut the inner wall (4), wherein the two arms (8) are formed integrally with a base body (12) of the shut-off element, wherein a cutout (9) is arranged in the connecting area between the arms, and wherein the arms (8) have a first end which is connected to the base body (12) and a second end which is connected to a common connecting piece (10). [2] Assembly according to the preceding claim, characterized by , that the outer contour (14) of the connection area (11) is wavy or jagged. [3] Assembly according to any one of the preceding claims, characterized by , that the shut-off device (5) is a gate valve. [4] Assembly according to claim 3, characterized by that the slide is a flat, plate-shaped slide. [5] Assembly according to any one of the preceding claims, characterized by that the shut-off device (5) has a passage opening (7). [6] Valve (20) comprising an assembly according to one of the preceding claims.

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