Valve for gas cartridge, gas cartridge for water dispenser and method for filling such gas cartridge

Abstract

The invention relates to a valve (10) for selectively closing and selectively opening a gas cartridge (1) for a water dispenser, where the valve (10) is arranged to maintain gas in the gas cartridge (1) when the valve is closed and to provide a fluid connection with the gas cartridge (1) when the valve is open, where the valve (10) comprises a valve housing (11) having a cartridge coupling opening (15), the invention relates to a valve (10) comprising a gas cartridge (1) having a cartridge coupling opening (16) which is oriented along a longitudinal axis (L) of the valve (10) such that gas can flow into and out of the gas cartridge (1) in the direction of the longitudinal axis (L), characterized in that the valve housing (11) comprises at least one outlet opening (16) which is outside and which is arranged in a direction parallel to the longitudinal axis (L), the valve (10) is arranged such that gas can flow out of the valve (10) in a direction parallel to the longitudinal axis (L).

Description

Technical Field

[0001] The present invention relates to a valve for selectively closing and selectively opening a gas cartridge (also known as a gas tank, gas bottle, i.e., Gaskartusche) for a water filling machine, wherein the valve is configured to retain gas in the gas cartridge when the valve is closed and to provide a fluid connection with the gas cartridge when the valve is open, wherein the valve comprises a valve housing having a cartridge coupling opening oriented along a longitudinal axis of the valve so that gas can flow into and out of the cartridge in the direction of the longitudinal axis. Background Art

[0002] Such valves are used on gas cartridges, in particular CO2 cartridges, for water dispensers. Such water dispensers are also called carbonators and usually have a gas cartridge connection, via which the gas cartridge connection or the gas cartridge valve can be connected to the water dispenser. The gas cartridge valve can then be selectively opened by an operating device of the water dispenser to remove gas, in particular CO2, from the gas cartridge and supply it to a container with liquid to be carbonated, for example drinking water.

[0003] This valve for gas cartridges is known from DE 20 2020 005 533 U1. The known valve includes a cartridge connection opening, through which gas can be filled into the receiving space of the gas cartridge and taken out from it. The cartridge connection opening is arranged in a direction parallel to the longitudinal axis, so that gas can flow into the receiving space of the gas cartridge and flow out from it in the direction of the longitudinal axis. In addition, at least one external connection opening is provided in the valve, which is opened laterally to the longitudinal axis, so that when taken out in a water filling machine, gas can flow out of the valve in a direction perpendicular to the longitudinal axis. Here, it has been proven to be disadvantageous that the recoil force acting perpendicular to the longitudinal axis of the valve or gas cartridge is caused by the lateral derivation of gas from the valve or gas cartridge. Since the gas cartridge in this water filling machine is usually arranged in an upright position, i.e. a vertical position, when gas is taken out from the gas cartridge, a force can be generated in the horizontal direction, which can cause the gas cartridge to tilt relative to the sealing profile of the water filling machine. Leakage between the gas cartridge and the water filling machine may thus occur. Summary of the invention

[0004] The object of the present invention is to specify a valve or a gas cartridge in which the lateral recoil forces are reduced.

[0005] In order to achieve this object, a valve is proposed for selectively closing and selectively opening a gas cartridge for a water filling machine.

[0006] wherein the valve is configured to retain gas in the gas cylinder when the valve is closed and to provide a fluid connection with the gas cylinder when the valve is open,

[0007] wherein the valve comprises a valve housing having a cartridge coupling opening oriented along a longitudinal axis of the valve so that gas can flow into and out of the gas cartridge in the direction of the longitudinal axis, and

[0008] Therein, the valve housing comprises at least one outlet opening which is located on the outside and is arranged in a direction parallel to the longitudinal axis, so that gas can flow out of the valve in a direction parallel to the longitudinal axis.

[0009] Valve according to the present invention is set up to selectively close and selectively open, so that gas can be selectively taken out from gas cylinder and gas cylinder is also filled with gas. In the closed state of the valve, gas can be kept in the gas cylinder. When the valve is opened, a fluid connection with the gas cylinder, especially the receiving space of the gas cylinder is provided so that it is possible to take out or fill. The taking out of gas from the gas cylinder can be carried out via an outlet opening, wherein the outlet opening is arranged to be outside and oriented so that gas flows out of the valve in a direction parallel to the longitudinal axis of the valve housing, so that any recoil force caused by the outflow acts parallel to the longitudinal direction. In this way, the recoil force perpendicular to the longitudinal direction can be reduced or avoided. In this respect, when the gas cylinder with valve is uprightly arranged in the water aerator, the lateral force when taking out gas is reduced.

[0010] Preferably, the outlet opening is arranged such that gas can escape in a direction pointing away from the cartridge coupling opening.

[0011] Preferably, the valve housing has exactly one outlet opening, which is external and arranged in a direction parallel to the longitudinal axis so that gas can flow out of the valve in a direction parallel to the longitudinal axis. Alternatively, a plurality of outlet openings may be provided, for example two, three, four, five or six.

[0012] Even if reference is made in the advantageous embodiments explained below to at least one outlet opening, these also include the alternative of having exactly one outlet opening and the alternative of having a plurality of outlet openings.

[0013] According to an advantageous design of the invention, it is provided that at least one outlet opening is arranged spaced apart from the longitudinal axis. By arranging the outlet openings in this way, it is possible to achieve that the gas is discharged from the gas cartridge in a direction parallel to the longitudinal axis and in a region of the valve spaced apart from the longitudinal axis, for example in the lateral edge region of the valve. For example, the valve can have a cylindrical shape and the at least one outlet opening can be away from the cylinder axis in a radial direction.

[0014] According to an advantageous design of the invention, it is provided that the ratio of the distance of the outlet opening from the longitudinal axis to the distance of the outlet opening from the outer contour of the valve housing arranged parallel to the longitudinal axis is in the range of 10 to 1000, preferably in the range of 10 to 150, particularly preferably in the range of 25 to 100. The distance mentioned is preferably defined starting from the center point of the outlet opening. The outer contour of the valve housing is preferably the outer contour of the valve housing in the region of the outlet opening, so that the distance of the outlet opening from the outer contour of the valve housing arranged parallel to the longitudinal axis is defined by a path perpendicular to the longitudinal axis in a cross-sectional plane intersecting the outlet opening. The ratio mentioned is particularly preferably in the range of 40 to 50, for example 45. The selection of such a ratio can help to achieve gas flowing out of the valve in a region laterally away from the longitudinal axis, wherein the gas flows out of the valve parallel to the longitudinal axis.

[0015] According to an advantageous design of the present invention, it is provided that at least one outlet opening is configured in the shape of a ring segment, in particular a circular ring segment, or in the shape of a ring, in particular a circular ring. The ring segment or annular outlet opening can enable the gas to flow out of the valve concentrically with the longitudinal axis. The ring segment or annular outlet opening is also not easily blocked by impurities and / or closed due to deformation of the valve. If the valve housing comprises exactly one outlet opening, it is preferably configured in the shape of a circular ring, so that the gas can flow out on the entire annular surface of the circular ring. By such a single circular ring-shaped outlet opening, the asymmetric outflow of gas and the recoil force caused thereby can be reduced or avoided.

[0016] According to an advantageous embodiment of the invention, the valve housing comprises a housing core and a housing sleeve, wherein at least one outlet opening is arranged between the inner contour of the housing sleeve and the outer contour of the housing core. This design with a housing core and a housing sleeve enables the valve housing to be manufactured cost-effectively, wherein the housing sleeve is joined to the housing core. It is therefore not necessary to use a removal, in particular cutting, manufacturing process to provide the outlet opening in the valve housing.

[0017] In this respect, it is advantageous if the outer contour of the housing core has a first diameter and the outer contour of the housing sleeve has a second diameter, wherein the ratio of the first diameter to the second diameter is in the range of 0.9 to 1, preferably in the range of 0.95 to 1 or in the range of 0.96 to 0.99, particularly preferably in the range of 0.97 to 0.99. For example, the ratio of the first diameter to the second diameter may be 0.985 or 0.980 or 0.990.

[0018] According to an advantageous embodiment of the invention, it is provided that the housing sleeve is fastened to the housing core in a non-detachable manner, i.e., not detachably in a non-destructive manner. The housing sleeve is preferably fastened to the housing core by a material-fit connection, such as a welded connection and / or a soldered connection and / or an adhesive connection. Alternatively, it can be provided that the housing sleeve is fastened to the housing core by a force-fit connection, such as a press-fit connection and / or a shrink connection. For example, the press-fit connection or press-fit to the housing core can be configured at the end of the housing sleeve that is opposite the outlet opening, in particular in such a way that the inner contour of the housing sleeve has a predetermined size reduction relative to the outer contour of the housing core.

[0019] According to an advantageous embodiment of the invention, it is provided that the housing sleeve is fastened to the housing core in such a way that it cannot be loosened manually or with standard tools or can only be loosened with special tools. In this sense, a standard tool is understood to be, for example, a spanner. In this sense, a special tool is not a standard tool, in particular not a spanner. The housing sleeve is preferably fastened to the housing core by a friction fit connection, for example a screw connection. Preferably, the screw connection has a static friction of its active surface, which is so great that the screw connection cannot be loosened manually (i.e. by hand).

[0020] According to an advantageous embodiment of the invention, it is provided that the housing sleeve is at least partially arranged in a fastening groove, in particular annular, formed in the housing core. For example, the connection region of the housing sleeve can be arranged in the fastening groove, and the region of the housing sleeve facing away from the connection region of the sleeve can protrude from the fastening groove. The connection region is preferably designed in annular shape, for example as an annular protrusion on the inner contour of the housing sleeve or as an annular end-side end region.

[0021] According to an advantageous embodiment of the invention, the housing core comprises a first housing core part and a second housing core part, wherein the fastening groove is arranged in the region between the first housing core part and the second housing core part. This embodiment of the housing core is particularly advantageous if the housing sleeve has a connecting region which is designed as an annular protrusion on the inner contour of the housing sleeve. The two-piece design of the housing core makes it easier to fit the housing sleeve in the fastening groove.

[0022] In this respect, a design has proven to be particularly advantageous in which the housing sleeve has a connection area which is configured as an annular protrusion at the inner contour of the housing sleeve, and the connection area of ​​the housing sleeve grips the first housing core part and / or the second housing core part at the rear. In this respect, the connection area can have an undercut that is located inside in the radial direction relative to the first and / or second housing core part. The undercut can be configured, for example, in the form of an annulus or an annular segment. In this way, a positive fit connection of the housing sleeve to the housing core can be achieved, which makes it difficult or prevents the housing sleeve from loosening in the radial direction.

[0023] According to an advantageous embodiment of the invention, it is provided that the valve housing comprises a fastening element by means of which the housing sleeve is fastened to the housing core in a non-releasable manner, i.e., not releasably in a non-destructive manner. The fastening element can surround the housing sleeve and the housing core at least in sections. For example, the fastening element can have a receiving opening in which the housing core and the housing sleeve are received, wherein the receiving opening has a predetermined size reduction relative to the common material thickness of the housing core and the housing sleeve. For the connection, the housing sleeve can be arranged around the housing core and the fastening element can be pressed onto the housing sleeve, whereby the housing sleeve is pressed against the housing core.

[0024] According to an advantageous design of the invention, the valve housing comprises a fastening element, by which the housing sleeve is non-releasably fastened to the housing core, wherein the fastening element is arranged in a fastening groove. The fastening element is preferably arranged, in particular pressed into the fastening groove, so that it fixes the housing sleeve in the fastening groove.

[0025] According to an advantageous embodiment of the invention, the valve housing has a sealing element, in particular a sealing ring, for sealing the housing sleeve relative to the housing core, which is arranged on the side of the housing sleeve opposite the outlet opening. The intermediate space between the housing core and the housing sleeve can be sealed on the side opposite the outlet opening by the sealing element, thereby preventing an undesired outflow of gas other than through the outlet opening.

[0026] According to an advantageous embodiment of the invention, it is provided that the housing core has a supply passage which is arranged transversely, in particular perpendicularly, to the longitudinal direction and opens into the intermediate space between the housing sleeve and the housing core in a through opening. A fluid connection between the interior of the valve housing and the outlet opening or between the cartridge coupling opening and the outlet opening can be provided via the supply passage. The intermediate space between the housing sleeve and the housing core preferably extends parallel to the longitudinal direction and has at least one outlet opening.

[0027] According to an advantageous design of the invention, it is provided that the housing core has a larger cross-sectional width, in particular a larger diameter, on the side of the through-opening facing the cartridge coupling opening than on the side of the through-opening facing away from the cartridge coupling opening. Due to the different cross-sectional widths on the sides of the through-opening, the outflowing gas flowing through the supply passage can be deflected in a direction parallel to the longitudinal axis and flow out of the outlet opening in this direction. In this regard, a step can be provided on the outer contour of the housing core, which step is arranged at the height of the through-opening of the supply passage. If the housing core is designed as a cylinder in the region of the through-opening, it has a larger diameter on the side of the through-opening facing the cartridge coupling opening than on the side of the through-opening facing away from the cartridge coupling opening.

[0028] According to an advantageous embodiment of the invention, a groove extending parallel to the longitudinal direction, in particular exactly one groove, is arranged in the outer contour of the housing core. The groove can further improve the guidance of the outflowing gas in a direction parallel to the longitudinal direction. Alternatively, a plurality of grooves, in particular exactly two grooves, each extending parallel to the longitudinal direction, can be arranged in the outer contour of the housing core.

[0029] In this respect, it is advantageous if the groove is arranged so that it intersects with the opening of the supply passage or ends at the opening so that the gas flowing through the supply passage can be introduced into the groove. If two supply passages are provided, it is preferably provided that the groove is arranged so that it intersects with the openings of the two supply passages. If the two supply passages are provided on opposite sides, it is preferred that two grooves are provided, which are respectively arranged so that they intersect with the opening of each of the supply passages.

[0030] According to an advantageous embodiment of the invention, a non-return element, in particular annular, is arranged on the valve housing, by means of which the valve can be fixed in the gas cartridge connection of the water filling machine. The non-return element preferably protrudes from the valve housing in a direction oblique to, in particular perpendicular to, the longitudinal axis of the valve housing. If the valve is introduced into the gas cartridge connection of the water filling machine, for example by displacement in the direction of the longitudinal axis, the non-return element can be gripped at the rear by a retaining element of the water filling machine, and the valve or the gas cartridge can thereby be fixed to the water filling machine.

[0031] According to an advantageous design of the invention, an overpressure valve is arranged on the valve housing, in particular comprising a rupture disk, which is configured to allow the overpressure present in the region of the cartridge coupling opening to escape. The rupture disk is preferably configured so that it ruptures at a preset overpressure in this region. By rupturing the rupture disk, a connection can be established between the cartridge coupling opening and the environment. The overpressure valve preferably comprises an overpressure outlet opening located outside and opening laterally to the longitudinal axis.

[0032] According to an advantageous design of the present invention, the valve has a cartridge closure element, which is preloaded to a closed position, in which the cartridge closure element closes the passage between the outlet opening and the cartridge coupling opening, wherein the cartridge closure element can be moved by the operating element of the valve in the direction of the open position, in which the passage between the outlet opening and the cartridge coupling opening is opened to guide out gas. The operating element of the valve is preferably movable along the longitudinal axis. When the valve or gas cartridge is connected to the gas cartridge coupling of the water aerator, the operating element can be operated by the starting element of the water aerator that acts in conjunction with the operating element, such as by a starting pin. Preferably, the cartridge closure element is preloaded in the direction of the closed position by means of a first spring element. The first spring element can be designed as a coil spring, preferably as a coil pressure spring. In addition to this, the above-mentioned open position of the cartridge closure element can be used to release the passage between the cartridge coupling opening and the possible filling opening of the valve housing to introduce gas into the gas cartridge.

[0033] According to an advantageous embodiment of the invention, the valve housing has a filling opening on the side opposite the cartridge coupling opening, through which gas can flow into the valve in the direction of the longitudinal axis. In this respect, the filling opening is oriented along the longitudinal axis of the valve. The filling opening provides the advantage that the gas cartridge does not need to be filled via the outlet opening.

[0034] According to an advantageous embodiment of the invention, the valve housing has a filling opening on the side opposite the cartridge coupling opening, through which gas can flow into the valve in the direction of the longitudinal axis, wherein the actuating element has a filling opening. In this embodiment, the actuating element has a dual function: on the one hand, it can be used to actuate the gas removal, in particular to be pressed in, and it provides a filling opening for filling the gas cartridge. Thus, a pressure for actuating the gas removal can be applied in the direction of the longitudinal axis (in particular by an actuating element of a water aerator), and gas can also be brought into the valve in the direction of the longitudinal axis during filling.

[0035] According to an advantageous design of the present invention, it is provided that the valve housing has a filling opening at a side opposite to the cartridge coupling opening, through which gas can flow into the valve in the direction of the longitudinal axis, wherein the filling opening is arranged between the outer contour of the operating element and the inner contour of the valve housing, wherein the filling opening is particularly designed as an annular shape. This design provides the possibility that the gas removal can be operated using an operating element, particularly a pressed-in operating element. The operating element can have one or more internal, particularly lateral openings, which lead into the intermediate space between the outer contour of the operating element and the inner contour of the valve housing. Via the one or more internal openings, the gas flowing into the valve in the direction of the longitudinal axis can be guided into the operating element, particularly in a direction transverse to, preferably perpendicular to, the longitudinal direction.

[0036] According to a structurally advantageous design of the present invention, it is provided that the outlet opening has a smaller distance from the cartridge coupling opening than the filling opening. Alternatively or additionally, it is structurally advantageous that the filling opening is arranged to be misaligned relative to the outlet opening about the longitudinal axis. For example, the filling opening can be oriented along the longitudinal axis of the valve so that gas can flow into the valve in the direction of the longitudinal axis, while the outlet opening is arranged to be spaced apart from the longitudinal axis and arranged in a direction parallel to the longitudinal axis so that gas can flow out of the valve in a direction parallel to the longitudinal axis.

[0037] According to an advantageous embodiment of the invention, it is provided that the valve has an inlet closure element which is preloaded by a second spring element into a closed position, in which the inlet closure element closes the passage between the filling opening and the cartridge coupling opening or closes the filling opening, wherein the second spring element is designed such that the inlet closure element can be brought into an open position by applying a preset gas pressure at the filling opening, in which the passage between the filling opening and the cartridge coupling opening or the filling opening is open for the introduction of gas. Thus, a filling sub-valve in the form of a non-return valve is provided by the preloaded inlet closure element, which keeps gas in the valve and lets gas in if a gas pressure exceeding the preset gas pressure is present at the filling opening. The second spring element can be designed as a helical spring, preferably as a helical compression spring.

[0038] In this respect, advantageously, the valve additionally has a cartridge closure element, which is preloaded to a closed position, in which the cartridge closure element closes the passage between the filling opening and the cartridge coupling opening, wherein the cartridge closure element can be moved in the direction of the open position by the inlet closure element of the valve, in which the passage between the filling opening and the cartridge coupling opening is opened to introduce gas. In this respect, by bringing the inlet closure element to its open position, the cartridge closure element can also be brought to its open position. In this way, a fluid connection can be established between the inlet opening and the cartridge coupling opening, by which a filling gas cartridge can be realized. The cartridge closure element is preferably an identical cartridge closure element that closes the passage between the outlet opening and the cartridge coupling opening in the closed position.

[0039] The valve preferably comprises, in particular in the region of the cartridge coupling opening, a thread for connecting the valve to an opening of a gas cartridge. The thread is preferably configured as an external thread so that it can be screwed with a corresponding internal thread of a gas cartridge.

[0040] In order to achieve the object mentioned at the outset, a gas cylinder is also proposed for connection to a gas cylinder connection of a water filling machine having the above-mentioned valve.

[0041] The same advantages and effects as already explained in conjunction with the valve according to the invention can be achieved by means of the gas cartridge.

[0042] Preferably, the gas cartridge has a thread, particularly preferably an internal thread, in particular in the region of the opening, by which the valve is attached. For example, the gas cartridge can be constructed according to the DIN EN ISO 7866:2021-05 standard.

[0043] In the gas cylinder, the advantageous designs and features described in connection with the valve can be used alone or in combination.

[0044] The invention also relates to a method for filling a gas cartridge as described above, wherein the valve housing has a filling opening on a side opposite the cartridge coupling opening, through which gas is introduced into the valve in the direction of the longitudinal axis.

[0045] The method makes it possible to fill a gas cartridge by supplying gas along the longitudinal axis of the valve. Here, a gas cartridge filled with gas is provided, from which gas can be withdrawn via at least one outlet opening in a direction parallel to the longitudinal axis of the valve. In this way, recoil forces perpendicular to the longitudinal direction can be reduced or avoided when withdrawing gas.

[0046] According to an advantageous embodiment of the method according to the invention, it is provided that the valve has an inlet closing element which is preloaded by a spring element into a closed position in which the inlet closing element closes the filling opening, wherein a preset gas pressure is applied at the filling opening in order to bring the inlet closing element into an open position. In this respect, the preloaded inlet closing element forms a kind of non-return valve which opens by exceeding the preset gas pressure at the inlet opening. In the open position of the inlet closing element, gas can then be brought into the valve through the inlet opening.

[0047] According to an advantageous embodiment of the invention, it is provided that the fluid connection between the outlet opening and the environment is sealed. For example, one or more sealing elements may be in contact with the outer contour of the valve housing, which seal the outlet opening.

[0048] Alternatively or additionally, the advantageous designs and features described in conjunction with the valve can also be used in the method alone or in combination.

[0049] Further details, features and advantages of the invention are apparent from the drawings and the following description of preferred embodiments according to the drawings. The drawings merely show exemplary embodiments of the invention and do not limit the inventive concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A gas cylinder according to one embodiment of the invention is shown in side view.

[0051] Figure 2 A valve according to one embodiment of the invention is shown in a perspective view.

[0052] Figure 3 The top view shows the Figure 2 valve.

[0053] Figure 4 The cross-sectional perspective view shows the Figure 2 A first embodiment of a valve according to the invention.

[0054] Figure 5 Shown according to Figure 4 Exploded cross-sectional view of the valve.

[0055] Figure 6 Shown according to Figure 4 A cross-sectional view of a portion of the valve to explain the removal of gas from the valve.

[0056] Figure 7 Shown according to Figure 4 Detailed cross-sectional view of the area of ​​the opening of the supply passage of the valve.

[0057] Figure 8 Shown according to Figure 4 A cross-sectional detail view of the area of ​​the gas outlet of the valve.

[0058] Fig. 9 Shown according to Figure 4 sectional view of a portion of a valve to explain the filling of gas into the valve according to a first variant.

[0059] Fig.10 Shown according to Figure 4 sectional view of a portion of a valve to explain the filling of gas into the valve according to a second variant.

[0060] Fig.11 The cross-sectional perspective view shows the Figure 2 A second embodiment of the valve according to the invention.

[0061] Fig.12 Shown according to Fig.11 Exploded view of the valve.

[0062] Fig.13 Shown according to Fig.11 A cross-sectional view of a portion of the valve to explain the removal of gas from the valve.

[0063] Fig.14 Shown according to Fig.11 Detailed cross-sectional view of the area of ​​the orifice of the supply passage of the valve.

[0064] Fig.15 Shown according to Fig.11 A perspective view of the valve core of a valve.

[0065] Fig.16 The cross-sectional perspective view shows the Figure 2 A third embodiment of the valve according to the invention.

[0066] Fig.17 Shown according to Fig.16 A cross-sectional view of a portion of the valve to explain the removal of gas from the valve.

[0067] Fig.18 The cross-sectional perspective view shows the Figure 2 A fourth embodiment of a valve according to the invention.

[0068] Fig.19 Shown according to Fig.18 A cross-sectional view of a portion of the valve to explain the removal of gas from the valve.

[0069] Fig. 20 The cross-sectional perspective view shows the Figure 2 A fifth embodiment of the valve according to the invention.

[0070] Fig.21 Shown according to Fig. 20 A cross-sectional view of a portion of the valve to explain the removal of gas from the valve.

[0071] Fig. 22 A sixth embodiment of a valve according to the invention is shown in a sectional perspective view.

[0072] Fig.23 Shown according to Fig. 22 A cross-sectional view of a portion of a valve.

[0073] Fig.24 A seventh embodiment of a valve according to the invention is shown in a sectional perspective view.

[0074] Fig.25 Shown according to Fig.24 A cross-sectional view of a portion of a valve.

[0075] Fig.26 Shown according to Fig.24 A perspective sectional view of a valve in the region of its filling opening. DETAILED DESCRIPTION

[0076] In the various figures, identical components are always provided with the same reference symbols and are therefore usually also each named or mentioned only once.

[0077] Figure 11 shows a gas cylinder 1 according to an embodiment of the present invention. The gas cylinder 1 is configured to be connected to a gas cylinder coupling portion of a water filling machine. The gas cylinder 1 comprises a receiving space 2 having an opening, at which a valve 10 according to the present invention for selectively closing and selectively opening the gas cylinder 1 is arranged. In the closed position of the valve 10, gas can be retained in the gas cylinder 1, and in the open position, a fluid connection can be provided to introduce gas into the gas cylinder 1 or to remove gas from the gas cylinder 1. Figure 1 A region of a gas cylinder 1 is shown, which comprises a valve 1. The gas cylinder 1 is shown in an upright position. In such an upright position, the gas cylinder 1 can be connected with a corresponding gas cylinder coupling in a water dispenser.

[0078] Figure 2 and Figure 3 The diagram in FIG. 1 shows an embodiment of a valve 10 for selectively closing and selectively opening a gas cylinder 1 for a water filling machine, which can be used in accordance with Figure 1 The valve 10 is configured to hold gas in the gas cylinder 1 when the valve is closed and to provide a fluid connection with the gas cylinder 1 when the valve is open. The valve 10 comprises a valve housing 11 having a gas cylinder coupling opening 15 oriented along a longitudinal axis L of the valve 10, so that gas can flow into and out of the gas cylinder 1 in the direction of the longitudinal axis L.

[0079] The valve housing 11 is connected to an annular non-return element 14, via which the valve 10 can be fixed in the gas cylinder coupling of the water filling machine. For this purpose, the non-return element 14 can be gripped at the rear by a suitable retaining element of the water filling machine. The non-return element 14 is fastened to the outside of the valve housing 11. The non-return element 14 has a circular recess, in which a part of the valve housing 11, in particular a part of the valve core 30 of the valve housing 11, is received. In an embodiment, the outer contour of the non-return element 14 is configured as an octagon, but alternatively can have different shapes, such as a circle, a quadrangle, a pentagon, a hexagon or a heptagon. A sealing element 20, here a sealing ring, is arranged between the non-return element 14 and the valve housing 11. The non-return element 14 can be arranged between the protrusion of the valve housing 11 and the container housing of the gas cylinder 1. Alternatively, the non-return element 14 can be configured as a one-piece with the valve housing 11.

[0080] Furthermore, an overpressure valve 13 is arranged on the valve housing 11, which overpressure valve 13 comprises a rupture disk 19. The overpressure valve 13 can allow an overpressure existing in the region of the cartridge coupling opening to escape by rupturing the rupture disk 19.

[0081] The valve housing 11 comprises an annular outlet opening 16, which is located outside and arranged in a direction parallel to the longitudinal axis L, so that the gas can flow out of the valve 10 in a direction parallel to the longitudinal axis L. The outlet opening 16 is arranged to be spaced apart from the longitudinal axis L and enables the gas to flow out in a direction parallel to the outer wall of the valve housing 11. In this regard, the outlet opening 16 is arranged near the outer wall of the valve housing 11. The ratio of the distance of the outlet opening 16 from the longitudinal axis L to the distance of the outlet opening 16 from the outer contour of the housing sleeve 33 arranged parallel to the longitudinal axis L is in the range of 10 to 1000, preferably in the range of 10 to 150, particularly preferably in the range of 25 to 100, for example in the range of 40 to 50, in particular 45.

[0082] Should be based on Figures 4 to 10 The diagram in the Figures 1 to 3 A first embodiment of the valve 10 is constructed.

[0083] exist Figure 4 In the cross-sectional view in FIG. 1 , the valve 10 is shown in a ready state. In contrast, Figure 5 shows an exploded view of the same valve 10. Figure 5 In the exploded view of FIG. 1 , the surface with threads is marked with reference symbol G.

[0084] The valve housing 11 of the valve 10 comprises a housing core 30 and a housing sleeve 33, which is arranged on the housing core 30 in a non-releasable manner (i.e., cannot be releasable in a non-destructive manner). In order to fasten the housing sleeve 33 on the housing core 30, a fastening element 35 is provided as a further part of the valve housing 11. The fastening element 35 is designed in the form of a ring, which is applied to the assembly of the housing sleeve 33 and the housing core 30. Here, the annular hole of the fastening element 35 has a predetermined size reduction, so that a press fit of the fastening element 35 on the assembly of the housing sleeve 33 and the housing core is achieved. In this regard, the housing sleeve 33 is connected to the housing core 30 in a force-fitting and non-releasable manner via the fastening element 35.

[0085] An annular intermediate space is formed between the housing sleeve 33 and the housing core 30, which opens into the outlet opening 16. In this respect, the annular outlet opening 16 is located between the inner contour of the housing sleeve 33 and the outer contour of the housing core 30. The gas can flow out of the intermediate space 36 in a direction parallel to the longitudinal axis L, see Figure 6 and Figure 7 In order to seal the intermediate space at the side of the housing sleeve 33 opposite the outlet opening 16, the valve housing 11 has a sealing element 34, in particular a sealing ring. The sealing element is arranged at the side of the housing sleeve 33 opposite the outlet opening 16. Figure 6 and Figure 7As can be seen from the illustration in , the sealing element 34 bears both against the housing sleeve 33 and against a projection of the housing core 30 and is held in place, in particular pressed, by a securing element 35 .

[0086] The intermediate space 36 is fluidically connected to the interior of the valve 10 via a supply channel 31. The supply channel 31 is formed in the housing core 30 and extends transversely, in particular perpendicularly, to the longitudinal direction L. The opening of the supply channel 31 into the intermediate space 36 between the housing sleeve 33 and the housing core 30 is marked with reference numeral 32.

[0087] The insert 26 is arranged in the housing core 30. The insert 26 is held in the housing core 30 in a force-fitting manner by means of a ring 27. A cartridge closure element 28 is arranged in the interior space of the housing core 30, which is preloaded to Figure 4 , wherein the cartridge closure element 28 closes the passage between the outlet opening 16 and the cartridge coupling opening 15, here the passage in the insert 26. The preload is caused by the spring element 29. The cartridge closure element 28 can be moved in the direction of the open position by the operating element 21 of the valve 10 against the preload, in which the passage between the outlet opening 16 and the cartridge coupling opening 15 is opened for the purpose of discharging gas. The operating element 21 is arranged externally on the side of the valve 10 opposite to the cartridge coupling opening 15, and can be moved in the direction of the longitudinal axis L to discharge gas from the valve 10. The operating element 21 is connected to the cartridge closure element 28 via the inlet closure element 24, so that the pressure can be transmitted to the cartridge closure element 28. The operating element 21 is movably supported in the longitudinal direction in the bracket 22, which is screwed to the housing core 30 at the side of the housing core 30 opposite to the cartridge coupling opening 15. For sealing, a sealing element 23 (here a sealing ring) is arranged between the operating element 21 and the bracket.

[0088] In the closed position, the inlet closure element 24 closes the filling opening 17 arranged in the actuating element 21. The filling opening is configured such that gas can flow into the valve 10 in the direction of the longitudinal axis L as long as the inlet closure element 24 releases it. The inlet closure element 24 is preloaded by the spring element 25 to Figure 4 , in which the inlet closure element 24 closes the filling opening 17. The spring element 25 is configured such that the inlet closure element 24 can be brought into an open position by applying a preset gas pressure at the filling opening 17, in which the filling opening 17 is open for the introduction of gas. In the open position of the inlet closure element 24, gas can be introduced into the interior space of the valve housing 11 through the filling opening 17 and then guided through the channel in the insert 26 in the direction of the cartridge coupling opening 15.

[0089] Figure 6, a detailed illustration of a valve 10 is shown, which is connected to a gas cartridge connection of a water filling machine. The gas cartridge connection comprises a sealing device 200, 200', which abuts against the outer contour of the valve 10 and seals the area around the outlet opening 16. In the present case, the sealing device has an upper sealing section 200 sealing above the outlet opening 16 and a lower sealing section 200' sealing below the outlet opening 16. Thus, a sealing space is created in the intermediate space between the two sealing sections 200, 200', into which the gas flowing out of the outlet opening 16 parallel to the longitudinal direction L is received. Figure 6 The sealing device 200, 200' shown in the figure also comprises a lateral opening 201, through which the gas flowing out of the valve 10, in particular the outlet opening 16, parallel to the longitudinal axis L is guided away in a direction inclined to the longitudinal axis L, see Figure 8 Arrow A in . The gas can then be conducted, for example, via a line to a carbonation device of a water dispenser, via which the gas can be introduced into a container filled with water.

[0090] Figure 7 The detailed illustration in FIG. 1 shows an area of ​​the valve housing 11 in which the supply passage 31 opens into the intermediate space 36 between the housing core 30 and the housing sleeve 33. A fastening element 35 is arranged laterally to the passage 32, which connects the housing sleeve 33 to the housing core 30. For sealing, the sealing element 34 is also held between the projection of the housing core 30 and the housing sleeve by the fastening element 35. In the area of ​​the passage 32, a step 38 is also provided in the outer contour of the housing core 30, see Figure 5 The step 38 is manifested in that the housing core 30 has a larger cross-sectional width B1, here a larger diameter, on the side of the passage 32 facing the barrel connection opening 15 than the cross-sectional width B2, here a diameter, on the side of the passage 32 facing away from the barrel connection opening 15. In the present exemplary embodiment, the step 38 results in an intermediate space 36 between the housing sleeve 33 and the housing core 30 on the side of the passage 32 facing away from the barrel connection opening 15. In contrast, the housing sleeve 33 rests directly on the housing core 30 on the side of the passage 32 facing the barrel connection opening 15.

[0091] Fig. 9 and Fig.10 The illustration in FIG. 1 shows the filling of the cartridge via the filling opening 17 at the side of the valve 10 opposite to the cartridge coupling opening 15. Figure 1 The gas cartridge 1 shown in FIG. 1 is in a state that can be assumed when sealing the fluid connection between the outlet opening 16 and the environment. This is necessary in order to prevent the gas from undesirably escaping via the outlet opening 16 when the gas is introduced via the opening 17. Conversely, the gas introduced into the valve 10 via the filling opening 17 can then be guided into the receiving space of the gas cartridge 1 via the cartridge coupling opening 15. Fig. 9and Fig.10 The illustrations in each case show that a sealing element 301 is arranged on the outer contour of the valve housing 11 , which seals the area around the outlet opening 16 from the environment.

[0092] according to Figures 11 to 15 The diagram in the Figures 1 to 3 The valve 10 comprises a second embodiment of the valve 10. The valve 10 comprises Figures 4 to 10 10. These elements are provided with the same reference numerals and are not explained again. Instead, with regard to these elements, reference is made to the reference numerals for the valve 10 shown in FIG. Figures 4 to 10 Unlike the valve 10 according to the first embodiment, in the valve 10 according to the second embodiment, the supply passage 31 is arranged at a different portion of the housing core 30. Figure 4 compared to, Fig.11 The supply passage 31 in the embodiment is arranged to be further away from the cartridge connection opening 15, i.e., moved upwards. Fig.12 ,and Figure 5 In comparison, the step 38 is also located further away from the cartridge coupling opening 15 .

[0093] Additionally, in the second exemplary embodiment, a groove 37 is arranged in the outer contour of the housing core 30 , which groove runs parallel to the longitudinal direction L. The groove 37 is arranged such that it intersects the passage 32 of the supply channel 31 or ends in the passage 32 .

[0094] According to the first embodiment ( Figures 4 to 10 ), such a groove 37 extending parallel to the longitudinal direction L can be provided at the outer contour of the housing core 30. The groove 37 is preferably arranged so that it intersects with the through-opening 32 of the supply passage 31 or ends in the through-opening 32.

[0095] for Fig. 9 and Fig.10 The statements regarding filling also apply correspondingly to the gas cylinder 1 comprising a valve 10 according to the second embodiment.

[0096] according to Fig.16 and Fig.17 The diagram in the Figures 1 to 3 The third embodiment of the valve 10. The valve 10 includes Figures 4 to 10 10. These elements are provided with the same reference numerals and are not explained again. Instead, with regard to these elements, reference is made to the reference to Figures 4 to 10In contrast to the valve 10 according to the first embodiment, in the valve 10 according to the third embodiment, a groove 37, in particular exactly one groove 37, is arranged in the outer contour of the housing core 30, which groove extends parallel to the longitudinal axis L. The groove 37 is arranged such that it intersects the opening 32 of the supply passage 31, in particular intersects the opening 32 of the exactly one supply passage 31.

[0097] for Fig. 9 and Fig.10 The statements regarding filling also apply correspondingly to the gas cartridge 1 comprising a valve 10 according to the third embodiment.

[0098] according to Fig.18 and Fig.19 The diagram in the Figures 1 to 3 The fourth embodiment of the valve 10. The valve 10 includes Figures 4 to 10 10. These elements are provided with the same reference numerals and are not explained again. Instead, with regard to these elements, reference is made to the reference to Figures 4 to 10 . In contrast to the valve 10 according to the first embodiment, in the valve 10 according to the fourth embodiment, two grooves 37 extending parallel to the longitudinal axis L are arranged in the outer contour of the housing core 30. Furthermore, the valve 10 according to the fourth embodiment comprises two supply passages 31, which are arranged on diametrically opposite sides of the housing core. The valve 10 preferably comprises exactly two supply passages 31. The grooves 37 are arranged such that they each intersect with an opening 32 of one of the supply passages 31.

[0099] for Fig. 9 and Fig.10 The statements regarding filling also apply correspondingly to the gas cartridge 1 comprising the valve 10 according to the fourth embodiment. Fig. 20 and 21 The diagram in the Figures 1 to 3 The fifth embodiment of the valve 10. The valve 10 includes Figures 4 to 10 10. These elements are provided with the same reference numerals and are not explained again. Instead, with regard to these elements, reference is made to the reference to Figures 4 to 10 . In contrast to the valve 10 according to the first exemplary embodiment, in the valve 10 according to the fifth exemplary embodiment, a groove 37, in particular exactly one groove 37, is arranged in the outer contour of the housing core 30, which groove extends parallel to the longitudinal axis L. The groove 37 is arranged such that it intersects the opening 32 of the first supply passage 31 or ends in the opening 32. Furthermore, the valve 10 according to the fifth exemplary embodiment comprises an additional second supply passage 31, which opens into the same groove 37 as the other supply passage 31.

[0100] for Fig. 9 and Fig.10 The statements regarding filling also apply correspondingly to the gas cartridge 1 comprising a valve 10 according to the fifth embodiment.

[0101] Figure 22 to Figure 26 The figures in FIG. 1 show sixth and seventh embodiments of a valve 10 for selectively closing and selectively opening a gas cylinder 1 for a water filling machine, which can alternatively be based on Figure 1 The gas cylinder 1 of the embodiment of the present invention is used. The valve 10 according to these embodiments is set up to keep the gas in the gas cylinder 1 when the valve is closed and to provide a fluid connection with the gas cylinder 1 when the valve is open. The corresponding valve 10 includes a valve housing 11, which has a cylinder coupling opening 15 oriented along the longitudinal axis L of the valve 10, so that the gas can flow into the gas cylinder 1 and can flow out of the gas cylinder 1 in the direction of the longitudinal axis L. The construction of the valve 10 according to the sixth and seventh embodiments is similar to that of the valve 10 according to the aforementioned embodiment, which is why the same reference numerals represent elements with the same function, and in this regard, reference is made to the explanations for the aforementioned embodiments. The statements about filling for the aforementioned embodiments also apply accordingly to the gas cylinder 1 including the valve 10 according to the sixth or seventh embodiment.

[0102] Fig. 22 and Fig.23 The valve 10 shown in FIG. 1 has a valve body 11 having a housing core 30, which includes a fastening groove 39. The fastening groove 39 is annular in shape and is open in the direction of the longitudinal axis L. The annular end area of ​​the housing sleeve 33 is arranged in the fastening groove 39. In addition, there is a fastening element 35 in the fastening groove 39. The fastening element 35 is annular in shape and is pressed into the fastening groove 39, so that the fastening element 35 fixes the housing sleeve 33 in the fastening groove 39. A sealing element 34, such as a sealing ring, arranged in the groove is also provided between the fastening element 35 and the housing sleeve 33.

[0103] An annular outlet opening 16 is formed between the housing sleeve 33 and the housing core 30 , which is located outside and arranged in a direction parallel to the longitudinal axis L so that gas can flow out of the valve 10 in a direction parallel to the longitudinal axis L.

[0104] Fig.24 , Fig.25 and Fig.26The valve 10 shown in has a valve body 11 with a housing core 30, which is designed as a multi-piece. According to an embodiment, the housing core 30 includes a first housing core part 30.1 and a second housing core part 30.2. The housing core parts 30.1, 30.2 are connected to each other, for example, by a spiral connection. The spiral connection is preferably non-releasable, that is, it cannot be loosened in a non-destructive manner, or cannot be loosened manually, or cannot be loosened with standard tools, or can only be loosened with special tools. The first housing core part 30.1 and the second housing core part 30.2 are designed so that the annular fastening groove 39 is constructed in the area between the first housing core part 30.1 and the second housing core part 30.2. The annular protrusion of the housing sleeve 33 is arranged and fixed in the fastening groove 39.

[0105] An intermediate space is formed between the housing sleeve 33 and the housing core 30, which intermediate space has an annular outlet opening 16, which is arranged on the outside and in a direction parallel to the longitudinal axis L, so that gas can flow out of the valve 10 in a direction parallel to the longitudinal axis L. The intermediate space between the housing sleeve 33 and the housing core 30 is fluidically connected to the interior space of the valve 10 via a supply passage 31. The supply passage 31 is constructed between the first housing core part 30.1 and the second housing core part 30.2 and extends transversely, in particular perpendicularly, to the longitudinal direction L. In the embodiment, the supply passage 31 is first bent parallel to the longitudinal direction L when viewed radially inwards in its further extension, and then bent again in a direction transverse to, in particular perpendicularly, to the longitudinal direction L. Viewed radially inwards, the supply passage 31 opens into the interior space of the valve 10.

[0106] In the interior space of the housing core 30, a cartridge closure element 28 is arranged, which is preloaded to Fig.24 2. The closed position shown in the figure, in which the cartridge closure element 28 closes the passage between the outlet opening 16 and the cartridge coupling opening 15, which is the passage in the second housing core part 30.2. The preload is caused by the spring element 29. The cartridge closure element 28 can be moved in the direction of the open position by the operating element 21 of the valve 10 against the preload, in which the passage between the outlet opening 16 and the cartridge coupling opening 15 is opened for exporting gas. The operating element 21 is arranged externally on the side of the valve 10 opposite to the cartridge coupling opening 15, and can be moved in the direction of the longitudinal axis L to export gas from the valve 10. The operating element 21 is connected to the cartridge closure element 28 via the inlet closure element 24, so that the pressure can be transmitted to the cartridge closure element 28. The operating element 21 is movably supported in the first housing core part 30.1 in the longitudinal direction. For sealing, a sealing element 23, a sealing ring, is arranged between the operating element 21 and the first housing core part 30.1.

[0107] As from Fig.26As can be seen from the illustration in , the valve housing 11 has a filling opening 17 at a side opposite to the cartridge coupling opening 15, through which gas can flow into the valve 10 in the direction of the longitudinal axis L, wherein the filling opening 17 is arranged between the outer contour of the operating element 21 and the inner contour of the valve housing 11. The filling opening 17 is designed to be annular. The operating element 21 includes a plurality of internal, especially lateral openings 40, which lead into the intermediate space between the outer contour of the operating element 21 and the inner contour of the valve housing 11. Via these internal openings 40, the gas flowing into the valve in the direction of the longitudinal axis L can be guided into the operating element 21, especially in a direction transverse to, preferably perpendicular to, the longitudinal direction. Under sufficient gas pressure, the inflowing gas can bring the inlet closing element 24 to its open position, in which the passage between the filling opening 17 and the cartridge coupling opening 15 is open. In the open position of the inlet closure element 24 , gas can be introduced through the filling opening 17 into the interior of the valve housing 11 and then guided in the direction of the cartridge coupling opening 15 through a channel in the second housing core part 30 . 2 .

[0108] exist Fig. 22 and Fig.23 The sixth exemplary embodiment of the valve 10 according to the invention shown in FIG. 1 further provides one of the embodiments of the actuating element 21 with an inner, lateral opening 40 .

[0109] according to Figure 24 to Figure 26 In a variation of the embodiment shown in , the housing sleeve 33 is designed as a single piece with the element constructed as the second housing core part 30.2. In this respect, in this variation, the valve housing 11 is essentially formed by the housing sleeve 33, 30.2 and the housing core 30.1. The outlet opening 16 is arranged between the inner contour of the housing sleeve 33 and the outer contour of the housing core 30.1. This variation offers the advantage that the joining of the housing sleeve 33, 30.2 and the housing core 30.1 can be simplified. Fig.24 In a variation of the embodiment shown in , the joining of the housing sleeve 33, 30.2 and the housing core 30.1 can be carried out by a screw connection, which is non-releasable, that is, it cannot be loosened in a non-destructive manner, or cannot be loosened manually or with standard tools or can only be loosened with special tools.

[0110] according to Figures 14 to 26 In an alternative variant of the embodiment shown in , the housing sleeve 33 comprises a connection area at its inner contour, which grips the first housing core part 30.1 and / or the second housing core part 30.2 at the rear. In this way, a form-fit connection of the sleeve element to the housing core can be achieved, which makes it difficult or prevents the housing sleeve 33 from loosening in the radial direction.

[0111] Reference Symbols List

[0112] 1 Gas cylinder

[0113] 2 Receiving space

[0114] 10 valve

[0115] 11 valve housing

[0116] 13 Overpressure valve

[0117] 14 Non-return element

[0118] 15 Cylinder connection opening

[0119] 16 Exit opening

[0120] 17 Filling opening

[0121] 18 Overpressure valve opening

[0122] 19 Rupture disk

[0123] 20 Sealing element

[0124] 21 Control elements

[0125] 22 Bracket

[0126] 23 Sealing element

[0127] 24 Inlet closure element

[0128] 25 Spring element

[0129] 26 Inserts

[0130] 26' stop surface

[0131] 27 rings

[0132] 28 Cartridge closure element

[0133] 29 Spring element

[0134] 30 Shell core

[0135] 30.1 Shell core

[0136] 30.2 Shell core

[0137] 31 Supply channel

[0138] 31' supply channel

[0139] 32 ports

[0140] 33 Housing sleeve

[0141] 34 Sealing element

[0142] 35 Fastening elements

[0143] 36 The Space Between

[0144] 37 slots

[0145] 38 steps

[0146] 39 Fastening groove

[0147] 40 openings

[0148] 200,200' sealing equipment

[0149] 201 Opening

[0150] A Flow direction

[0151] B1 Cross-section width

[0152] B2 Cross-section width

[0153] G thread

[0154] L Longitudinal axis

Claims

1. A valve (10) for selectively closing and selectively opening a gas cylinder (1) for a water filling machine, in, The valve (10) is configured to retain gas in the gas cylinder (1) when the valve is closed and to provide a fluid connection with the gas cylinder (1) when the valve is open, The valve (10) comprises a valve housing (11) having a cartridge coupling opening (15) oriented along a longitudinal axis (L) of the valve (10) so that gas can flow into and out of the gas cartridge (1) in the direction of the longitudinal axis (L), It is characterized in that The valve housing (11) comprises at least one outlet opening (16) which is external and arranged in a direction parallel to the longitudinal axis (L) so that gas can flow out of the valve (10) in a direction parallel to the longitudinal axis (L).

2. The valve (10) according to claim 1, characterized in that The at least one outlet opening (16) is arranged spaced apart from the longitudinal axis (L).

3. A valve (10) according to any one of the preceding claims, characterised in that The ratio of the distance of the outlet opening (16) from the longitudinal axis (L) to the distance of the outlet opening (16) from an outer contour of the valve housing (11) arranged parallel to the longitudinal axis (L) is in the range of 10 to 1000, preferably in the range of 10 to 150, particularly preferably in the range of 40 to 50.

4. A valve (10) according to any one of the preceding claims, characterised in that The at least one outlet opening (16) is designed in the form of a ring segment, in particular a circular ring segment, or in the form of a ring, in particular a circular ring.

5. Valve (10) according to any one of the preceding claims, characterized in that The valve housing (11) comprises a housing core (30) and a housing sleeve (33), wherein the at least one outlet opening (16) is arranged between an inner contour of the housing sleeve (33) and an outer contour of the housing core (30).

6. The valve (10) according to claim 5, characterized in that The outer contour of the housing core has a first diameter and the outer contour of the housing sleeve has a second diameter, wherein a ratio of the first diameter to the second diameter is in the range of 0.9 to 1, preferably in the range of 0.95 to 1 or in the range of 0.96 to 0.99, particularly preferably in the range of 0.97 to 0.

99.

7. The valve (10) according to any one of claims 5 or 6, characterized in that The housing sleeve (33) is non-detachably fastened to the housing core (30).

8. The valve (10) according to any one of claims 5 to 7, characterized in that The housing sleeve (33) is arranged at least partially in an in particular annular fastening groove (39) formed in the housing core (30).

9. The valve according to claim 8, characterized in that The shell core (30) comprises a first shell core part (30.1) and a second shell core part (30.2), wherein the fastening groove (39) is arranged in the area between the first shell core part (31.1) and the second shell core part (31.2).

10. The valve (10) according to claim 9, characterized in that The housing sleeve (33) has a connection area which is configured as an annular protrusion on the inner contour of the housing sleeve (33) and the connection area of ​​the housing sleeve (33) grips the first housing core part (30.1) and / or the second housing core part (30.2) at the rear.

11. The valve (10) according to any one of claims 5 to 10, characterized in that The valve housing (11) comprises a fastening element (35) by which the housing sleeve (33) is non-detachably fastened to the housing core (30).

12. The valve (10) according to claim 8, characterized in that The valve housing (11) comprises a fastening element (35) by means of which the housing sleeve (33) is non-detachably fastened to the housing core (30), wherein the fastening element (35) is arranged in the fastening groove (39).

13. The valve (10) according to any one of claims 5 to 12, characterized in that The valve housing (11) has a sealing element (34), in particular a sealing ring, for sealing the housing sleeve (33) relative to the housing core (30), the sealing element being arranged on a side of the housing sleeve (33) opposite the outlet opening (16).

14. The valve (10) according to any one of claims 5 to 13, characterized in that The housing core (30) has a supply channel (31) which is arranged to extend transversely, in particular perpendicularly, to the longitudinal direction (L) and opens into an intermediate space between the housing sleeve (33) and the housing core (30) in a passage (32).

15. The valve according to claim 14, characterized in that The housing core (30) has a larger cross-sectional width (B1), in particular a larger diameter, on the side of the passage (32) facing the cartridge connection opening (15) than on the side of the passage (32) facing away from the cartridge connection opening (15).

16. The valve (10) according to any one of claims 5 to 15, characterized in that A groove (37) is arranged in the outer contour of the housing core (30), which groove runs parallel to the longitudinal direction (L).

17. The valve (10) according to claim 16, characterized in that The groove (37) is arranged so that it intersects with the through-opening (32) of the supply passage (31) or ends at the through-opening (32).

18. Valve (10) according to any one of the preceding claims, characterized in that A non-return element (14), in particular annular, is arranged on the valve housing (11), by means of which the valve (10) can be fixed in a gas cartridge connection of a water filling machine.

19. Valve (10) according to any one of the preceding claims, characterized in that Arranged on the valve housing (11) is an overpressure valve (13), in particular comprising a rupture disk (19), which is configured to allow an overpressure existing in the region of the cartridge coupling opening (15) to escape.

20. Valve (10) according to any one of the preceding claims, characterised in that A cartridge closure element (28) is preloaded in a closed position, in which the cartridge closure element (28) closes a passage between the outlet opening (16) and the cartridge coupling opening (15), wherein the cartridge closure element (28) is movable by an actuating element (21) of the valve (10) in the direction of an open position, in which the passage between the outlet opening (16) and the cartridge coupling opening (15) is open for discharging gas.

21. Valve (10) according to any one of the preceding claims, characterized in that The valve housing (11) has a filling opening (17) on the side opposite the cartridge coupling opening (15), through which gas can flow into the valve in the direction of the longitudinal axis (L).

22. The valve (10) according to claim 20, characterized in that The valve housing (11) has a filling opening (17) on a side opposite the cartridge coupling opening (15), through which gas can flow into the valve in the direction of the longitudinal axis (L), wherein the actuating element (21) has the filling opening (17).

23. The valve (10) according to claim 20, characterized in that The valve housing (11) has a filling opening (17) on a side opposite to the cartridge coupling opening (15), through which gas can flow into the valve in the direction of the longitudinal axis (L), wherein the filling opening (17) is arranged between an outer contour of the operating element (21) and an inner contour of the valve housing (11), wherein the filling opening (17) is particularly designed to be annular.

24. Valve (10) according to any one of claims 21 to 23, characterised in that An inlet closing element (24) is preloaded into a closed position by a spring element (25), in which the inlet closing element (24) closes the passage between the filling opening (17) and the cartridge coupling opening (15) or closes the filling opening (17), wherein the spring element (25) is designed so that by applying a preset gas pressure at the filling opening (17), the inlet closing element (24) can be brought into an open position, in which the passage between the filling opening (17) and the cartridge coupling opening (15) or the filling opening (17) is open for the introduction of gas.

25. The valve (10) according to claim 24, characterized in that The valve (10) additionally comprises a cartridge closure element (28) which is preloaded into a closed position in which the cartridge closure element (28) closes the passage between the filling opening (17) and the cartridge coupling opening (15), wherein the cartridge closure element (28) is movable via an inlet closure element (24) of the valve (10) in the direction of an open position in which the passage between the filling opening (17) and the cartridge coupling opening (15) is open for the introduction of gas.

26. A gas cartridge (1) for connection to a gas cartridge coupling of a water dispenser having a valve (10) according to any one of the preceding claims.

27. A method for filling a gas cylinder (1) according to claim 25, wherein: The valve housing (11) has a filling opening (17) on the side opposite the cartridge coupling opening (15), through which gas is introduced into the valve in the direction of the longitudinal axis (L).

28. The method according to claim 27, characterized in that The valve (10) has an inlet closing element (24) which is preloaded into the closed position by a spring element (25) and in which the inlet closing element (24) closes the filling opening (17), wherein a preset gas pressure is applied to the filling opening (17) in order to bring the inlet closing element (24) into the open position.

29. Method according to any one of claims 27 or 28, wherein the fluid connection between the outlet opening (16) and the environment is sealed.

Images