Poppet Valve

Abstract

The poppet valve (1) comprises a valve body (2) having a plurality of passage channels (2a), a plurality of closing elements (4), a plurality of guide means (6) and a catcher (3), each passage channel (2a) leading to a valve seat (7), a closing element (4) attached to each guide means (6) so as to be movable in a stroke direction (H), each closing element (4) being associated with a respective valve seat (7) located opposite in the stroke direction (H), so that each valve seat (7) can be closed by the associated closing element (4), the guide means (6) being connected to the catcher (3), and each guide means (6) comprises a guide part (6a) having an internal cavity (6d) extending in the stroke direction (H), a support part (6b) having a support surface (6e), a spring (5) extending within the internal cavity (6d) of the guide part (6a) and being fixedly sandwiched between the support surface (6e) and the closure element (4), each guide means (6) having a first stop surface (6f) facing the valve seat (7), each closure element (4) having a second stop surface (4e) facing the first stop surface (6f), the first and second stop surfaces (6f, 4e) being arranged to cooperate in such a way that they limit the maximum stroke of the closure element (4) in the stroke direction (H).

Description

[Technical field]

[0001] The present invention relates to a poppet valve according to the preamble of claim 1 . [Background technology]

[0002] US Pat. No. 5,999,333 discloses a poppet valve for a piston compressor. The poppet valve exhibits relatively high wear resistance and relatively high flow resistance. Also, the poppet valve operates relatively slowly when opening and closing. Furthermore, both the manufacturing and maintenance costs of the poppet valve are relatively high. Thus, there is a need for a more efficient, less expensive, less maintenance, and / or easier to maintain poppet valve. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Pat. No. 4,489,752 Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE PRESENT EMBODIMENT It is an object of the present invention to provide a more economically advantageous poppet valve for a piston compressor. [Means for solving the problem]

[0005] This object is achieved by a poppet valve with the features of claim 1. Dependent claims 2 to 25 relate to further advantageous embodiments of the invention. The object is solved in particular with a poppet valve comprising a valve body with a plurality of passage channels, a plurality of closure elements, a plurality of guide means and a catcher. Each passage channel leads to a valve seat, and a closure element is attached to each guide means so as to be movable in the stroke direction, and each closure element is assigned to each valve seat located opposite in the stroke direction, so that each valve seat can be closed by the respectively assigned closure element. The guide means are connected to the catcher, and each guide means comprises a guide part with an internal cavity extending in the stroke direction and a support part including a support surface. The spring extends into the internal cavity of the guide part and is clamped and fixed between the support surface and the closure element. Each guide means has a first stop surface directed towards the valve seat, and each closure element has a second stop surface directed towards the first stop surface, the first and second stop surfaces being arranged to cooperate to limit the maximum stroke of the closure element in the stroke direction.

[0006] The object is further solved with a poppet valve, in particular comprising a valve body with a plurality of passage channels, a plurality of closure elements, a plurality of guide means and a catcher. Each passage channel leads to a valve seat, and a closure element is attached to each guide means so as to be movable in the stroke direction, and each closure element is associated with a respective valve seat located opposite in the stroke direction, so that each valve seat can be closed by the respectively associated closure element. Each guide means comprises a guide part along the stroke direction, a support part and a fixing part and is connected to the catcher via the fixing part. The guide part has an internal cavity extending in the stroke direction, and the support part has a support surface. A spring extending in the internal cavity of the guide part is clamped and fixed between the support surface and the closure element. The guide means have a single guide part extending in the stroke direction, and each guide means has a first stop surface directed towards the valve seat. Each closure element has a second stop surface directed towards the first stop surface, and the first and second stop surfaces are arranged to cooperate to limit the maximum stroke of the closure element in the stroke direction. The fixing part forms a snap-fit ​​connection with the catcher which acts in both directions in the stroke direction. A snap-fit ​​connection means a connection which is formed by the interlocking of at least two connection partners. As a result, the connected partners cannot be separated if the force transmission is not or is interrupted.

[0007] The poppet valve according to the invention has the advantage that the closing element does not strike the catcher directly, which reduces the wear of the closing element and also reduces the wear of the catcher. The poppet valve according to the invention comprises a guide means with a first stop surface and a closing element with a second stop surface, the two stop surfaces being arranged in such a way that they fit together to limit the maximum stroke of the closing element. Furthermore, this design has the consequence that during the operation of the poppet valve, mainly the guide means and the closing element wear, which can be advantageously replaced in a simple manner. The poppet valve according to the invention also has the advantage that the closing element can be designed with a relatively low mass. This reduces the forces that occur when braking the closing element, in particular the forces acting on the valve body and the forces acting on the catcher. On the one hand, these reduced forces result in less wear of the closing element, the valve body and / or the guide means, and also preferably make it possible to design the valve body and / or the catcher with a lower mass and / or lower stiffness. It is therefore possible to ensure a sufficiently large rigidity and a long-term reliable operation of the poppet valve even with a plurality and / or a plurality of passage openings in the valve body and / or the catcher. A separate closing element is associated with each passage opening of the valve body. The poppet valve according to the invention has the further advantage that it can have a plurality of passage openings and closing elements. In an advantageous embodiment, the poppet valve according to the invention has an equal number of closing elements as 10-50 passage openings, particularly preferably 20-40 passage openings or closing elements. This relatively large number of passage openings and closing elements has the advantage that the passage openings as well as the closing elements have a relatively small diameter, which on the one hand reduces the mass of the closing elements and on the other hand the flow of the fluid through the poppet valve is more uniform over the surface of the poppet valve, so that the flow resistance of the poppet valve is reduced. Closing elements with a small mass also have the advantage that they react very quickly according to the applied forces and move in the stroke direction, so that the poppet valve according to the invention has a short reaction time of the closing elements.

[0008] The poppet valve according to the invention comprises guide means, each of which has a fixing part which is fixed to the catcher or which can be fixed to the catcher and forms a male-female connection acting in both directions of the stroke, by which the guide means is fixed firmly to the catcher.

[0009] Advantageously, the catcher has a constant width in the stroke direction. Advantageously, the catcher consists of a plate-like material, preferably with a thickness of 3-6 mm, particularly advantageously with a thickness of 4-5 mm. Particularly advantageously, the catcher consists of a metal sheet.

[0010] The fastening part is advantageously designed as a snap-in connection, in particular as a removable snap-in connection, so that the guide means can be easily removed from the catcher and preferably replaced by a new guide means. The guide means and preferably also the closure element are preferably designed as spare parts so that they can be easily replaced after a certain time and / or when worn out.

[0011] The poppet valve according to the invention comprises a separate associated closing element for each passage and a guide means associated with each closing element for guiding the closing element in the stroke direction. In a particularly advantageous embodiment, the closing elements and the guide means are easily replaceable, advantageously individually replaceable, so that during servicing it is possible to easily replace all closing elements and / or all guide means or to replace only those closing elements and / or guide means which are to be replaced according to existing wear during servicing. Advantageously, the guide means are removably connected to the catcher in a simple manner, for example via a clip connection or a snap-in connection, so that the guide means can be removed from the catcher and replaced in a simple manner during servicing.

[0012] Each closure element is movably guided in the stroke direction by an associated guide element. In an advantageous design, the closure element surrounds the guide element from the outside, so that the guide element is at least partially arranged inside the closure element in the stroke direction. This design has the advantage that dirt deposits, which may result for example from dirt particles flowing through the fluid, are hardly formed on the guide element. In a further advantageous embodiment, the guide element surrounds the closure element from the outside, so that the closure element is at least partially arranged inside the guide element in the stroke direction. This embodiment can, for example, make the closure element from plastic, which is preferably selected so that it causes little wear when it hits the valve body or the valve seat. In an advantageous embodiment, the material combination of the valve seat and the closure element is selected so that the closure element wears much more than the valve seat during operation of the poppet valve, for example in that the closure element is made of plastic and the valve seat or the valve body is made of metal. This embodiment ensures a long-term reliable and inexpensive operation of the poppet valve, since the closure element is easily and cheaply replaceable.

[0013] The invention is explained in detail below by means of embodiment examples. The drawings used to explain the embodiments show the following: [Brief description of the drawings]

[0014] [Figure 1] 1 is a perspective longitudinal sectional view of a first embodiment of a poppet valve; [Diagram 2] FIG. 2 is a bottom perspective view of the poppet valve of FIG. 1 . [Diagram 3] Detail of the poppet valve of Figure 1 without the spring. [Figure 4] 4. View according to FIG. 3, but without the closure element and the valve body. [Diagram 5] FIG. 4 shows the closure element of FIG. 3 . [Figure 6] FIG. 4 is a perspective longitudinal sectional view of a second embodiment of a poppet valve; [Figure 7] FIG. 7 is a bottom perspective view of the poppet valve of FIG. [Figure 8] 7 is a detailed view of the poppet valve of FIG. 6. [Figure 9] 9. A view according to FIG. 8, but without the closure element, the spring and the valve body. [Figure 10] FIG. 9 shows the closure element of FIG. 8 . [Figure 11] FIG. 7 is a front view of the closure element of the poppet valve of FIG. 6; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] As a rule, identical parts are provided with the same reference numbers in the figures. 1 shows a perspective longitudinal section of a first embodiment of a poppet valve. The poppet valve 1 comprises a valve body 2 with a plurality of passage channels 2a, each of which leads to a valve seat 7. Opposite the valve seats 7, respectively arranged are closure elements 4 movable in the stroke direction H, each of which has a closure head 4b, which, when in contact with the valve seat 7, closes the respective valve seat 7 or the respective passage channel 2a. The closure elements 4 are respectively mounted movably in the stroke direction H via guide means 6. Each guide means 6 is connected to a catcher 3, which is rigidly connected to the valve body 2 via a spacer 8 and a fastening means 9 with a nut 9a, so that the catcher 3, as well as the guide means 6 and the closure element 4, are arranged in a defined position relative to the valve body 2, i.e. in such a way that the closure element 4 can open and close the respective valve seat 7 in a position opposite in the stroke direction H by a corresponding movement in the stroke direction H. The valve seat 7 can be opened and closed by the closure element 4. In the illustrated embodiment example, the valve seat 7 comprises an annular valve seat portion 7a, which is arranged and configured in such a way that the closing element 4 is exclusively in contact with the valve seat portion 7a during closing. The valve seat portion 7a is preferably designed as a wear part, so that the valve seat portion 7a arranged on the valve seat 7 can be replaced, in particular when the wear that has occurred requires replacement. The valve seat portion 7a is preferably made of a plastic, for example PTFE, PEEK, FFKM, or a soft metal alloy, for example a copper or indium alloy. The spring 5 is arranged in combination with the closing element 4 and with the guide means 6, respectively. The spring is arranged to extend inside the guide means 6, as shown in FIG. 1, and generates a biasing force on the closing element 4 towards the valve body 2, so that in the rest state of the poppet valve 1, the closing element 4 comes into contact with the valve seat portion 7a or with the valve body 2. FIG. 1 shows the poppet valve 1 in an open state, in which fluid flows from top to bottom through the valve body 2, so that the closure element 4 is displaced from the valve seat portion 7a.

[0016] Figure 2 is a bottom perspective view of the poppet valve of Figure 1. The catcher 3 is designed as a lattice structure including lattice nodes 3a, struts 3b and gaps 3c. Advantageously, a single guide means 6 is attached to each lattice node 3a, as shown in Figure 2. In a preferred embodiment, the lattice structure of the catcher 3 has gaps 3c with a relatively large area, so that the flow resistance of the catcher 3 is low. The catcher 3 is fixed at a defined distance and in a defined position relative to the valve body 2 via spacers 8 and fastening means 9. The catcher 3 is preferably made of metal or plastic.

[0017] Figure 3 is a detailed view of a single closure element 4 and associated guide means 6, showing the associated passage 2a in the valve body 2. The spring 5 arranged in the internal cavity 6d is not shown in order to allow a better view of the other elements. Figure 3 does not show the same cross section as Figure 1.

[0018] The valve body 2 comprises a passage channel 2a and a valve seat 7 with an annular valve seat portion 7a. A closure element 4 is attached to each guide means 6 so as to be movable in the stroke direction H. Each closure element 4 is assigned to each valve seat 7 in a position opposite to it in the stroke direction H. Each valve seat 7 can be closed by a respectively associated closure element 4, the guide means 6 being connected to the catcher 3. Each guide means 6 comprises a guide part 6a, a support part 6b and a fixing part 6c. The guide part 6a comprises an internal cavity 6d extending in the stroke direction H. The support part 6b comprises a support surface 6e, and a spring 5, which is only shown in FIG. 1, extends into the internal cavity 6d of the guide part 6a and is clamped and fixed between the support surface 6e and the closure head 4b of the closure element 4. The guide means 6 has a first stop surface 6f directed towards the valve seat 7, and the closure element 4 has a second stop surface 4e directed towards the first stop surface 6f. The first and second stop surfaces 6f, 4e are arranged to cooperate to limit the maximum stroke of the closure element 4 in the stroke direction H. The height of the closure element 4 in the stroke direction H is selected such that the closure element 4 rests only against the top of the guide means 6 with its stop surface 4e, so that the guide member 4c has no direct contact with the catcher 3 whatever the position of the closure element 4, and so that the closure element 4 does not strike the catcher 3. This has the advantage that the catcher 3 is not subjected to any or only very little wear caused by the closure element 4.

[0019] In an advantageous embodiment, as shown in figures 1 and 3, the closure element 4 comprises a hollow cylindrical guide member 4c and a closure head 4b, which is of one piece and preferably consists of deep-drawn metal. Advantageously, the guide means 6 has a cylindrical, outwardly facing first sliding surface 6g. The guide member 4c has a cylindrical, inwardly facing second sliding surface 4a. The closure element 4 and the guide means 6 are designed identically such that the first sliding surface 6g and the second sliding surface 4a form a sliding surface with respect to one another, along which the closure element 4 is mounted so that it can slide back and forth in the stroke direction H relative to the guide means.

[0020] The closure element 4 is preferably designed in one piece and comprises a closure head 4b and a hollow cylindrical guide part 4c which runs adjacent to the closure head 4b in the stroke direction H, the closure head 4b having a second stop surface 4e on the side remote from the valve seat 7. The guide part 6a has an end face directed towards the valve body 2 and forms a first stop surface 6f.

[0021] 4 shows in detail a part of the catcher 3 and a single guide means 6 connected to the catcher 3. The catcher 3 is designed as a lattice structure with lattice nodes 3a, posts 3b and openings 3d in the lattice nodes 3a. In an advantageous embodiment, the guide means 6 comprises a fixing part 6c by means of which the guide means 6 can be fixed to the catcher 3 and preferably also detached again.

[0022] In an advantageous embodiment, as shown in Figures 3 and 4, the fastening portion 6c comprises a plurality of clips or snap-in connection members 6h each having a barb, whereby the fastening portion 6c can be inserted into a circular opening 3d in the lattice node 3a, with the barbs adjacent the catcher 3 so that the guide means 6 is securely, and preferably releasably, connected to the catcher 3.

[0023] FIG. 5 shows the closure element 4, which has already been shown in detail in FIG. 3. In an advantageous embodiment, the guide member 4c, which forms the second sliding surface 4a, extends along the entire height of the closure element 4. In FIGS. 3 and 4, the spring 5, which is required for the closure element 4, is not shown. The guide means 6 comprises a support surface 6e, against which one end of the spring 5 rests, as shown in FIG. 1, and the other end of the spring 5 rests against the inside of the closure head 4b, preferably against a support surface 4g. This causes a biasing force to act on the closure element 4 towards the valve body 2. Advantageously, the closure element 4 comprises a protruding centering part 4f, which centers the spring 5 with respect to the closure head 4b. The closure element 4 is preferably very light in design, having a weight of, for example, 1 to 20 grams. In an advantageous embodiment, the closure element 4 is made of metal. Particularly advantageously, the closure element 4 is manufactured from sheet metal by deep drawing, the sheet metal preferably having a thickness of 0.25-1.5 mm. The metal closure element 4 preferably has a wall thickness of 0.25-1.5 mm, particularly preferably 0.3-1 mm. The metal closure element 4 preferably has a weight of 5-15 grams, preferably 8-12 grams. Such a closure element 4 can be manufactured at very low cost. Such a lightweight closure element 4 has a small inertia and can therefore be moved very quickly. The closure element 4 can also be made of plastic. The closure element preferably has a diameter of 8-15 mm, in particular a diameter of 10-12 mm. The first stop surface 6f preferably has a width in the radial direction relative to the stroke direction H of at least twice the wall thickness of the closure element 4. The guide means is preferably made of plastic.

[0024] As can be seen from FIG. 3, the poppet valve 1 according to the invention can be serviced in a very simple manner, in a first process step the catcher 3 can be removed from the valve body 2, the catcher 3 and the guide means 6 connected to the catcher 3 as well as the associated closure element 4 can be removed from the valve body 2. Thereafter, if necessary, the valve seat ring 7a can be replaced in a simple manner. Furthermore, if necessary, the closure element 4 can be replaced in a simple manner. Furthermore, in advance, if necessary, at least one of the guide means 6, preferably all of the guide means 6 can be removed from the catcher 3 and replaced with new guide means 6. The spring 5 is then inserted inside the guide means 6, and subsequently the respective closure element 4 is slipped onto the corresponding guide means 6. This allows the valve body 2 and the catcher 3 to be firmly connected again, and the service of the poppet valve 1 according to the invention is completed.

[0025] In the example shown in Figures 1 to 5, the first sliding surface 6g and the second sliding surface 4a are cylindrical. These two sliding surfaces 6a, 4a can also have other shapes designed to allow sliding in the stroke direction H. For example, the guide means 6 and the closing means 4 can also have an elliptical, triangular, square or polygonal cross section, forming the sliding surfaces 6a, 4a such that they allow sliding in the stroke direction H.

[0026] In one possible embodiment, the closure element 4 can have holes in the region of the guide member 4c in order to achieve a fluid conducting connection between the interior and the exterior of the closure element 4. Such an arrangement can have the advantage that, at least temporarily, a fluid flow can be generated inside the closure element 4 or the guide means 6, removing accumulated dirt.

[0027] Figure 6 shows a perspective longitudinal section of a second embodiment of a poppet valve. The poppet valve 1 shown in Figure 1 and the poppet valve 1 shown in Figure 6 differ in particular in that the closing element 4 and the guide means 6 are designed differently. In other respects, the two poppet valves are essentially designed the same, with the exception of the valve seat 7 and the annular valve seat portion 7a.

[0028] Figure 7 shows a bottom view of the poppet valve 1 according to Figure 6. The catcher 3 is rigidly connected to the valve body 2 via a spacer part 8 and a fastening part 9. The guide means 6 is fixedly connected to the catcher 3 via a fastening part 6c, which is designed as a rivet connection including a rivet connection 6i.

[0029] FIG. 8 shows in detail a single closure element 4 and the associated guide means 6 and spring 5, and also shows the associated passage channel 2a of the valve body 2. Moreover, FIG. 8 shows in detail how these elements are arranged relative to one another in the poppet valve according to FIG. 6. FIG. 8 shows the same cross-sectional view as FIG. 6. The valve body 2 comprises a passage channel 2a, whereby in this embodiment the annular valve seat part 7a is not arranged on the valve seat 7. Opposite the valve seat 7 in the stroke direction H is the closure element 4, which is attached to the guide means 6 so that it is displaceable in the stroke direction H. The closure element 4 is attached to the guide means 6. As shown in FIG. 10, the closure element 4 consists of a hollow cylindrical guide member 4c and a closure head 4b, which closes the inner space enclosed by the guide member 4c towards the valve seat 7. As shown in FIG. 9, the guide means 6 comprises a guide part 6a, a support part 6b and a fixing part 6c. The guide part 6a is hollow cylindrical and has a cylindrical inwardly facing first sliding surface 6g. The guide part 4c has a cylindrical outwardly facing second sliding surface 4a. As shown in FIG. 8, the guide member 6 circumferentially surrounds the closure element 4, and the closure element 4 and the guide means 6 are designed to be identical such that the first sliding surface 6g and the second sliding surface 4a form a mutual sliding surface along which the closure element 4 is mounted so that it can move back and forth in the stroke direction H relative to the guide means 6. The support part 6b forms a first stop surface 6f. The end face of the closure element 4 forms a second stop surface 4e. The first and second stop surfaces 6f, 4e are mutually arranged such that they can come into contact with each other during movement in the stroke direction H, thereby limiting the movement of the closure element 4 in the stroke direction H. The guide means 6 is preferably made of metal and is preferably made of deep-drawn sheet. If the guide means 6 is made of metal, it preferably has a wall thickness of 0.25 to 1.5 mm, particularly preferably a wall thickness of 0.3 to 1 mm.The guide means 6 comprises a fastening part 6c, which is moulded before assembly, for example in the form of a sleeve, so that it is inserted in the catcher 3 in a first process step and then folded in a second process step, so that the fastening part 6c forms a kind of riveted joint which fastens the guide means 6 to the catcher 3, as shown in figures 8 and 9. The support surface 6e also forms a first stop surface 6f. The spring 5 is clamped and fixed between the first stop surface 6f and the inner surface of the closing head 4b.

[0030] The metallic guide means 6 preferably has a wall thickness of 0.25 to 1.5 mm, particularly advantageously of 0.3 to 1 mm. The guide means advantageously has a diameter of 8 to 15 mm, particularly advantageously of 10 to 12 mm. In the radial direction to the stroke direction H, the first stop surface 6f advantageously has a width of at least twice the wall thickness of the guide means 6.

[0031] The closure element 4 shown in FIG. 10 is preferably made of plastic, but may also be made of metal. The valve body 2 can be made of plastic or metal. If the closure element 4 is made of plastic, the annular valve seat part 7a can be omitted, as shown in FIG. 8, since such a closure element 4 preferably causes only a small wear of the valve seat 7. However, the closure element 4 can also be made of metal. The guide means 6 can be connected to the catcher 3 in various ways. The guide means 6 can also be made of plastic and can have, for example, a mounting part 6c with a snap-in connection part 6h, as shown in FIGS. 3 and 4, so that the guide means 6 is connectable to the catcher 3 via a clip connection part 6c.

[0032] Figure 11 shows a top view of the poppet valve 1 according to Figure 6 with the valve body 2 completely removed. The poppet valve 1 comprises a catcher 3 in which 31 guide means 6 are arranged, a closure element 4 with a closure head 4a aligned towards the valve body 2 is arranged in each guide means 6. The arrangement shown in Figure 11 is firmly and preferably removably connected to the valve body 2, not shown, with the help of spacers 8 and fastening means 9. In an advantageous configuration, the arrangement shown in Figure 11 is designed as a pre-configured spare part for the poppet valve 1, if necessary without the spacers 8 and fastening means 9, so that by this servicing method it is only necessary to connect it to the valve body 2 in order to obtain a poppet valve 1, preferably as good as new.

[0033] The poppet valve 1 according to the invention can be cost-effectively equipped with a plurality of passage channels 2a and a plurality of closing elements 4. In an advantageous embodiment, the poppet valve 1 comprises, along the diameter, 3-12 passage channels 2a and closing elements 4, particularly advantageously 4-7 passage channels 2a and closing elements 4. In FIG. 11, five closing elements 4 are arranged along the diameter in the direction A, so that the valve body 2, which is not shown, also has five passages 2a. FIG. 11 shows a configuration with 32 closing elements 4. In an advantageous embodiment, the poppet valve 1 according to the invention comprises 14-45 closing elements 4 and the same number of passage channels 2a.

[0034] In the embodiment of the poppet valve 1 shown in figures 1 and 6, the guide means 6 can be connected to the catcher 3, and the guide means 6 can advantageously be disconnected again from the catcher 3. In a further advantageous embodiment, the guide means 6 forms part of the catcher 3, so that the guide means 6 are firmly and inseparably connected to the catcher 3. Such an embodiment has the advantage that during a servicing to replace the catcher 3, all the guide means 6 are replaced at the same time. In a further advantageous embodiment, a spare part is provided, which includes the catcher 3 as well as all the associated guide means 6, the closing element 4 and the spring 5. In one possible embodiment, this spare part is designed as a kit, in which the individual parts need to be further assembled. In a particularly advantageous embodiment, this spare part is already pre-assembled, so that for servicing the poppet valve 1, only the catcher 3 needs to be removed from the valve body 2, and the pre-assembled spare part, which includes the catcher 3 as well as the associated guide means 6, the closing element 4 and the spring 5, has to be attached to the valve body 2. In this spare part, the guide means 6 may be part of the catcher 3. In another possible embodiment, in this spare part, the guide means 6 can be removably connected to the catcher 3, as shown in Figures 1-4.

[0035] The closure elements 4 shown in figures 1 to 5 preferably have an outside diameter of 8 to 14 mm, particularly advantageously an outside diameter of 10 to 12 mm. The guide means 6 shown in figures 6 to 10 preferably have an inside diameter of 8 to 14 mm, particularly advantageously an inside diameter of 10 to 12 mm. Advantageously, all closure elements 4 and / or guide means 6 arranged in the poppet valve 1 are designed identically.

Claims

1. A poppet valve, comprising: The valve body (2) has a plurality of passage channels (2a), a plurality of closure elements (4), a plurality of guide means (6) and a catcher (3), each passage channel (2a) leading to a valve seat (7), the closure elements (4) being attached to respective guide means (6) so as to be movable in a stroke direction (H), each closure element (4) being associated with a respective valve seat (7) located opposite in the stroke direction (H) such that each valve seat (7) can be closed by a respective associated closure element (4), and each guide means (6) being movable in the stroke direction (H). a guide portion (6a), a support portion (6b) and a fixed portion (6c) successively arranged in a stroke direction (H), each guide means (6) being connected to a catcher (3) via a fixed portion (6c), the guide portion (6a) including an internal cavity (6d) extending in the stroke direction (H), the support portion (6b) including a support surface (6e), a spring (5) extending in the internal cavity (6d) of the guide portion (6a) and being fixed by being sandwiched between the support surface (6e) and a closure element (4), and the guide means (6) including a single guide portion (6a) extending in the stroke direction (H), each guide means (6) has a first stop surface (6f) directed towards the valve seat (7) and each closure element (4) has a second stop surface (4e) directed towards the first stop surface (6f), the first and second stop surfaces (6f, 4e) being arranged to cooperate in such a way that they limit the maximum stroke of the closure element (4) in the stroke direction (H), the fixing part (6c) forming a telescopic connection with a catcher (3) acting in both directions of the stroke direction (H); said guide part (6a) being hollow cylindrical and having a first sliding surface (6g) extending in the stroke direction (H) and said closure element (4) having a second sliding surface (4a) extending in the stroke direction (H), said first and second sliding surfaces (6g, 4a) being arranged opposite each other, such that each closure element (4) is movably mounted in the associated guide means (6) via the first and second sliding surfaces (6g, 4a) in the stroke direction (H); an inner surface of the guide part (6a) forms the first sliding surface (6g), and the closure element (4) is at least partially positioned inside the guide means (6) in the stroke direction (H) by including a hollow cylindrical guide member (4c) whose outer surface forms the second sliding surface (4a).

2. 2. A poppet valve according to claim 1, characterized in that the catcher (3) has a constant width in the stroke direction (H).

3. 3. A poppet valve according to claim 2, characterized in that the catcher (3) is made of a plate-like material.

4. A poppet valve according to claim 3, characterized in that the catcher (3) consists of a metal sheet.

5. 2. The poppet valve according to claim 1, characterized in that the guide part (6a) has an end face directed towards the valve body (2), which end face forms the first stop surface (6f).

6. 2. A poppet valve according to claim 1, characterized in that the closing element (4) is made of metal.

7. Poppet valve according to claim 6, characterized in that the closure element (4) has a wall thickness of 0.25 mm to 1.5 mm.

8. Poppet valve according to claim 7, characterized in that the closure element (4) has a diameter of between 8 mm and 15 mm.

9. 9. A poppet valve according to claim 7 or 8, characterized in that the first stop surface (6f) has a width, in a radial direction relative to the stroke direction (H), of at least twice the wall thickness of the closure element (4).

10. Poppet valve according to any one of claims 6 to 9, characterised in that the guide means (6) are made of plastic.

11. Poppet valve according to claim 10, characterized in that the fixing part (6c) has a snap-in connection part (6h).

12. 2. The poppet valve according to claim 1, characterized in that the closure element (4) is designed in one piece and comprises a closure head (4b) and the hollow cylindrical guide member (4c) extending adjacent to the closure head (4b) in the stroke direction (H), the hollow cylindrical guide member (4c) having an end face facing away from the valve body (2), which end face includes the second stop surface (4e).

13. 2. The poppet valve according to claim 1, characterized in that the guide means (6) comprises, from the catcher (3) towards the valve body (2), first the support portion (6b) and then the guide portion (6a), the support portion (6b) comprising a first support surface (6f) directed towards the valve body (2).

14. A poppet valve according to claim 13, characterized in that said guide means (6) are made of metal.

15. Poppet valve according to claim 14, characterised in that the guide means (6) has a wall thickness of between 0.25 mm and 1.5 mm.

16. Poppet valve according to claim 15, characterised in that the guide means (6) has a diameter between 8 mm and 15 mm.

17. 17. A poppet valve according to claim 15 or 16, characterized in that the first stop surface (6f) has a radial width relative to the stroke direction (H), which width is at least twice the wall thickness of the guide means (6).

18. Poppet valve according to any one of claims 14 to 17, characterised in that the closure element (4) is made of plastic.

19. 19. The poppet valve according to claim 18, characterized in that the fixing portion (6c) comprises a rivet connection (6i).

20. Poppet valve according to any one of claims 1 to 4, characterized in that the catcher (3) is designed as a planar lattice structure comprising lattice nodes (3a) and struts (3b) connecting the lattice nodes (3a), the lattice nodes (3a) being designed to fix the guide means (6).

21. A poppet valve according to any one of the preceding claims, designed as a kit comprising a valve body (2) and comprising a catcher (3) to which a guide means (6) is attached, further comprising a number of closing elements (4) and a spring (5).

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