EP4174358B1 - Pressure vessel having multiple lateral outflow apertures - Google Patents

Description

The invention relates to a pressure vessel according to the features of the preamble of claim 1.

The state of the art, as described in the WO 2021/099542 A1 described, a pressure vessel and a method for producing a pressure vessel are known. The pressure vessel comprises a vessel body with a vessel bottom arranged at a lower end and formed in one piece with the vessel body, an end piece arranged at an upper end of the vessel body and formed in one piece with the vessel body and having an opening, a connection geometry arranged on the outside of a wall surrounding the opening of the end piece, wherein the wall forms a connection with the connection geometry which is designed to be coupled to a corresponding further connection in a media-tight manner, a fastening structure for a valve formed on the inside of the wall surrounding the opening of the end piece and an overpressure protection device arranged in an overpressure opening of the end piece or an overpressure opening of the vessel body. From the EP 0 050 947 A2 A gas cylinder for axial sampling is known, which has two auxiliary outlets on the side of the cylinder neck to accommodate a test valve and a pressure relief valve.

In the DE 202 21 173 U1 A C02 capsule and a device for automatically filling the capsule are described. A one-way valve is provided which is mounted on the 12 gr. CO2 capsule, the 12 gr. CO2 capsule with the one-way valve, which is connected to the one-way valve and a filling device for filling the 12 g CO2 capsule with liquid carbon dioxide gas.

From the US 2011/0056472 A1 and the US 2004/0107951 A1 A pressure bottle for a paintball marker is known. A device for use in paintball includes a modified pressure bottle with a valve assembly that is "integrally" mounted in its neck and is independent of the connection structure for connecting the bottle to a paintball marker WO2021137206 A1 shows a pressure vessel valve with two outlet openings.

The invention is based on the object of specifying a novel pressure vessel.

The object is achieved according to the invention by a pressure vessel having the features of claim 1.

Advantageous embodiments of the invention are the subject of the dependent claims. A pressure vessel has a vessel body. At an upper end of the vessel body, an end region is formed integrally with the vessel body. This end region formed integrally with the vessel body can also be referred to as an end piece. The end region has an opening. The pressure vessel also has a fastening structure for a valve formed on the inside of a wall surrounding the opening of the end region.

According to the invention, two outflow openings are formed in the wall surrounding the opening of the end region, in particular opposite one another.

The pressure vessel, for example a compressed gas vessel, enables the integration of the valve or a valve function into the end area and in particular a direct media-tight coupling of the pressure vessel with another connection, for example a connection of an application.

In contrast to the prior art, this enables a medium in the container body, such as a gas, such as carbon dioxide, to flow out sideways. The medium flows through the valve and then through the two outflow openings in the wall and into the application. The solution according to the invention is therefore particularly suitable for applications in which such a lateral outflow is required.

In contrast to other solutions in which the valve protrudes from the container body in order to thereby enable lateral outflow from the valve, the solution according to the invention achieves a smaller overall height because the valve can be or is arranged almost completely in the container body. For example, only a collar-shaped upper section of a valve body of the valve protrudes from the container body, which lies sealingly against one end face of the wall of the end region.

The pressure vessel also has, in particular, the valve, which is arranged in the end region, in particular is screwed into it. The valve is designed, for example, as a check valve.

A valve body of the valve has in particular exactly one passage opening, which is formed radially from an inner side towards an outer side of the valve body. This enables the valve body to be manufactured easily. In addition, the valve body is particularly stable because it has only a single passage opening, thus avoiding additional weakening caused by multiple passage openings. The valve body can therefore be formed, for example, with less material expenditure and/or from a different, in particular more cost-effective, material, for example from aluminum or brass.

In other embodiments, the valve may have a plurality of such passage openings, each of which is formed radially from the inside towards the outside of the valve body.

The passage opening or the respective passage opening in the valve body is positioned at the level of the outlet openings in the end area. This ensures short flow paths between the passage opening in the valve and the two outlet openings.

Alternatively, the passage opening or the respective passage opening can also be positioned at a height offset from the height of the outlet openings in the end area.

For example, the passage opening opens into a distributor groove formed all around the outside of the valve body and/or an inner opening edge of the respective outflow opening is arranged on a groove base of a circumferential distributor groove formed on the inside of the wall of the end region. This ensures an even distribution of the medium flowing out of one passage opening in the valve body to the two outflow openings in the wall of the end region and thus an even flow of the medium out of both outflow openings.

If the passage opening or the respective passage opening is positioned at an offset height to the height of the outflow openings in the end region, for example, the distributor groove is designed to be correspondingly wide or a connecting channel is provided between the passage opening or the respective passage opening and the distributor groove or another fluidic connection is provided between the passage opening or the respective passage opening and the distributor groove.

The fastening structure has in particular an internal thread arranged on the inside of the wall. In one possible embodiment, the valve body has an external thread corresponding to the internal thread of the fastening structure. When screwed into the internal thread, in particular completely, i.e. up to a predetermined end position, the valve body is arranged in the area of the opening of the end region, protrudes from the opening into the end region, rests against the end region in a media-tight manner and has a receiving opening. A sealing tappet is arranged in the receiving opening, which in a closed position closes the passage opening in a media-tight manner, i.e. closes it either directly or indirectly in a media-tight manner, and in an open position releases the passage opening. The valve has in particular a support element connected to the valve body or formed on the valve body and a spring element arranged within the valve body, which is supported with a first end on the support element and with an opposite second end on the sealing tappet, wherein the spring element is tensioned, in particular compressed, when the sealing tappet moves from the closed position to the open position.

Such a design of the valve with the valve body and the other valve components, which are held inside or on the valve body, enables particularly simple assembly of the valve as a whole in the end area. Since the valve does not have a holding function, in contrast to solutions known from the state of the art with a separate valve, the valve body can be dimensioned significantly weaker in terms of its material thickness and material quantity.

For example, at least one seal, for example in the form of an O-ring or a shaft seal, is arranged between the valve body and the end region. In particular, such a seal is arranged above and below the passage opening between the valve body and the end region. The seal above the passage opening creates a The medium is prevented from flowing out of the opening in the end area upwards out of the container body. The seal below the passage opening prevents the medium from flowing between the wall of the end area and the valve body and thus past the valve in the direction of the outflow openings in the wall of the end area. In one possible design, two seals are also arranged between the valve body and the sealing tappet, for example in the form of an O-ring or a shaft seal. These seals are very reliable and inexpensive. One seal is arranged above the passage opening to prevent the medium from flowing out of the receiving opening upwards, so that it is ensured that the medium flows out laterally exclusively via the two lateral outflow openings. The other seal is arranged below the passage opening. This prevents the fluidic connection between the passage opening and the area of the receiving opening that is fluidically connected to the interior of the container body when the sealing tappet is in the closed position and releases it when the sealing tappet is in the open position.

For example, the passage opening is fluidically connected to the receiving opening and the sealing tappet closes the receiving opening and thus also the passage opening in a media-tight manner in the closed position and releases the receiving opening at least in sections in the open position and thereby also releases the passage opening. In this embodiment, the passage opening is thus closed in a media-tight manner by means of the sealing tappet in the closed position, in particular indirectly, by closing the receiving opening and thus the passage opening fluidically connected to it in a media-tight manner.

In one possible embodiment, the support element and/or the valve body has an inflow opening. This allows the inflow of a medium located inside the container body, at least when the sealing tappet is in the open position, into the receiving opening in the valve body and thus, at least when the valve stem is in the open position, allows the medium to flow in the direction of the passage opening.

In one possible embodiment, the valve body has a pressure equalization opening. This enables the valve tappet to be moved into the open position and back into the open position, particularly when the support element is in a closed configuration, with pressure equalization taking place between an area of the receiving opening below the sealing tappet and the interior of the container body.

The container body has in particular a container base arranged at a lower end and formed in one piece with the container body. In particular, the one-piece design of the entire container body including the container base and end area means that particularly high pressure stability is achieved with little effort, in particular with little material expenditure, since connections, for example weld seams, which represent weak points, are avoided.

The container body has in particular a connection geometry arranged on the outside of a wall surrounding the opening of the end region, for example an external thread, a locking arrangement or a quick-release fastener, wherein the wall with the connection geometry forms a connection which is designed to be coupled to a corresponding further connection in a media-tight manner. Due to the design of the connection geometry, for example a so-called ACME thread, at the end region, the valve can be omitted as a separate component. Compared to solutions known from the prior art with a separate valve, this means that a number of individual parts can be reduced, and a base body of the valve, made of brass for example, can be omitted or at least made significantly weaker in terms of its material thickness and material quantity. In this way, material and cost expenditure can be significantly reduced. For example, a Measurement savings of up to 200 g per pressure vessel with valve can be achieved.

Furthermore, due to the design of the connection geometry at the end area and thus at the pressure vessel, reliable and improved media tightness can be achieved, which results in particular from a reduction in the number of joints and their sealing compared to the solutions known from the prior art with a separate valve. In addition, assembly effort is reduced.

In addition, a seal provided in the prior art for sealing the valve against the pressure vessel, in particular a so-called O-ring, can be omitted, which also results in a reduction in the number of individual parts and a reduction in costs.

Due to the integration of the valve into the pressure vessel and the formation of the external thread at the end area, the valve no longer has to be made of brass. For example, both the pressure vessel, i.e. the vessel body with the vessel base and the end area, and the components of the valve are made of aluminum. This has the advantage that particularly low costs can be achieved and that at least all components responsible for the media tightness are made of the same material with the same thermal expansion coefficient, thus avoiding different expansions and the resulting leaks when temperatures change. The components of the valve and the pressure vessel can also be easily and completely recycled. Alternatively, the valve can be made of brass or another material, for example.

In the method for producing a pressure vessel described above, the vessel body and the end region are manufactured together from a material blank in a roll forming process. Furthermore, the The fastening structure for the valve and in particular the connection geometry is produced by means of machining and/or forming, in particular during the roll forming process, and/or applying material and/or other suitable processes in the area of the end area. Furthermore, the two outflow openings are formed in the wall of the end area. The valve is then fastened in the area of the opening in the end area. The pressure vessel can be manufactured particularly easily and with high quality using the roll forming process. The production of the fastening structure and the fastening of the valve are also particularly easy, reliable and can be implemented at low cost.

The pressure vessel can, for example, also have an overpressure safety device. For example, this overpressure safety device is arranged in the valve. Alternatively, this overpressure safety device is arranged, for example, in an overpressure opening formed in the bottom of the vessel. If the bottom of the vessel is designed accordingly, for example with a corresponding recess, this enables an integrated arrangement of the overpressure safety device without it protruding beyond an outer edge of the pressure vessel. This increases protection against mechanical damage to the overpressure safety device. Furthermore, the installation space required to accommodate the pressure vessel in an application can be reduced and assembly of the pressure vessel in the installation space is simplified.

The overpressure protection device comprises, for example, a bursting disc, which is secured, for example, with a screw comprising a vent bolt. Such a design of the overpressure protection device is particularly simple, cost-effective and reliable. For example, the overpressure protection device is designed for a trigger pressure of 250 bar. However, any other trigger pressure values are also possible.

For example, the rupture disc is fluidically coupled to the interior of the pressure vessel and is, for example, secured at the edge by the screw held within which a vent bolt is formed or arranged. If the trigger pressure is exceeded, the rupture disc is mechanically destroyed and releases a fluidic connection between the vent bolt and the interior of the pressure vessel, so that fluid inside the pressure vessel, for example gas, can escape.

For example, the overpressure opening comprises an internal thread that corresponds to an external thread of the screw, into which the screw is screwed. This enables the overpressure protection to be attached particularly easily and securely. For example, the internal thread is produced by machining. However, the internal thread can also be produced in a forming process, for example a roll forming process, during the formation of the container base. Alternatively, other processes for producing the internal thread are also possible.

In one possible embodiment of the method for producing the pressure vessel, the overpressure opening in the vessel base is created by means of machining and/or forming, in particular during the roll forming process, and/or applying material and/or other suitable processes and then the overpressure safety device is attached to the overpressure opening. The creation of the overpressure opening and the attachment of the overpressure safety device are particularly simple, reliable and can be implemented at low cost.

Embodiments of the invention are explained in more detail below with reference to drawings.

Figur 1

schematisch eine Längsschnittdarstellung einer Ausführungsform eines Druckbehälters,

Figur 2

schematisch die Ausführungsform des Druckbehälters gemäß Figur 1 in einer Draufsicht von oben,

Figur 3

schematisch eine Detailansicht des Details III in Figur 1,

Figur 4

schematisch eine Längsschnittdarstellung eines Behälterkörpers der Ausführungsform des Druckbehälters gemäß Figur 1,

Figur 5

schematisch eine Detailansicht des Details V in Figur 4,

Figur 6

schematisch eine Längsschnittdarstellung eines Ventils der Ausführungsform des Druckbehälters gemäß Figur 1, und

Figur 7

schematisch eine Längsschnittdarstellung eines Ventils einer weiteren Ausführungsform des Druckbehälters.

Shown here:

Figure 1

schematically a longitudinal sectional view of an embodiment of a pressure vessel,

Figure 2

schematically the embodiment of the pressure vessel according to Figure 1 in a top view,

Figure 3

schematically a detailed view of detail III in Figure 1 ,

Figure 4

schematically a longitudinal sectional view of a container body of the embodiment of the pressure vessel according to Figure 1 ,

Figure 5

schematically a detailed view of detail V in Figure 4 ,

Figure 6

schematically a longitudinal sectional view of a valve of the embodiment of the pressure vessel according to Figure 1 , and

Figure 7

schematically a longitudinal sectional view of a valve of another embodiment of the pressure vessel.

Corresponding parts are provided with the same reference numerals in all figures.

In Figure 1 a longitudinal sectional view of an embodiment of a pressure vessel 1 is shown. Figure 2 shows the pressure vessel 1 in a top view. Figure 3 shows a detailed view of detail III in Figure 1 . Figure 4 shows a longitudinal sectional view of a vessel body 3 of the pressure vessel 1. Figure 5 shows a detailed view of detail V in Figure 4 and Figure 6 shows a longitudinal sectional view of a valve 6 of the pressure vessel 1.

The pressure vessel 1 is, for example, a compressed gas vessel and is designed to hold a gas under high pressure. For example, the pressure vessel 1 is a so-called gas cartridge.

The pressure vessel 1 has the vessel body 3 with a vessel bottom 4 arranged at a lower end and in particular formed integrally with the vessel body 3.

At an upper end, which is thus opposite the container base 4, the container body 3 has an end region 2 which is in particular formed integrally with the container body 3. The end region 2 has an opening O.

The container bottom 4, the container body 3 and the end region 2 are in particular designed as a homogeneous, one-piece component without joints and are manufactured together in a forming process, for example a roll forming process, from a material blank, for example from an aluminum blank or another material.

For a media-tight coupling of the pressure vessel 1 to an application, the latter has, for example, a connection geometry 5 introduced on the outside of a wall 2.1 surrounding the opening O of the end region 2, which is designed, for example, as an external thread, for example as a so-called ACME thread. The wall 2.1, in particular having the connection geometry 5, forms a connection which is designed to be or is to be coupled in a media-tight manner to a corresponding further connection of the corresponding application. The connection geometry 5 is, for example, created during the formation of the end region 2 in the forming process and/or by means of machining after the forming and/or by applying material and/or other suitable processes.

The pressure vessel 1 further advantageously has the valve 6, which is designed in particular as a check valve. This valve 6 is arranged, at least substantially, within the end region 2. For this purpose, the pressure vessel 1 has a fastening structure 9 for the valve 6 formed on the inside of the wall 2.1 surrounding the opening O of the end region 2. The fastening structure 9 has in particular an internal thread arranged on the inside of the wall 2.1. A valve body 6.7 has an external thread corresponding to the internal thread of the fastening structure 9.

The valve 6 comprises the valve body 6.7, which is arranged with an upper collar-shaped valve body section 6.1 at the opening O of the end region 2. Starting from the opening O and from this collar-shaped valve body section 6.1, the valve body 6.7 projects into the end region 2.

The valve body 6.7 rests against the end region 2 in a media-tight manner. For this purpose, a diameter of the upper collar-shaped valve body section 6.1 of the valve body 6.7 is larger than an opening diameter of the opening O of the end region 2, whereby a contact surface facing the end region 2 is formed on the upper collar-shaped valve body section 6.1, which rests against an end face of the end region 2. In addition, a seal 6.2, in particular designed as an O-ring or shaft seal, is arranged between the valve body 6.7 and the end region 2. This rests against the valve body 6.7 in particular in a transition region between the upper collar-shaped valve body section 6.1 and the section of the valve body 6.7 adjoining below it and protruding into the end region 2, and in an opening edge region on the inside of the wall 2.1 of the end region 2 surrounding the opening O of the end region 2. In the examples shown, it is arranged in a receiving groove of the valve body 6.7. The valve body 6.7 is made of aluminum or brass or another material, for example.

The valve body 6.7 has a receiving opening AO running in the axial direction of the valve body 6.7 and penetrating the latter. This receiving opening AO has an upper receiving section AOO and an adjoining lower receiving section AOU, the upper receiving section AOO having a smaller diameter than the lower Receiving section AOU. The valve 6 also has a sealing tappet 6.3. The sealing tappet 6.3, which is in the Figures 1 to 3 and 6 and also in Figure 7 in a further embodiment of the valve 6 is shown in a closed position, penetrates the upper receiving section AOO of the receiving opening AO and closes it in a media-tight manner.

In an open position (not shown in detail), the sealing tappet 6.3 releases the upper receiving section AOO of the receiving opening AO at least in sections. More precisely, in the open position, the sealing tappet 6.3 releases a lower passage section of the upper receiving section AOO of the receiving opening AO. In order to enable this valve function, i.e. the media-tight closure in the closed position and the release in the open position, a seal 6.4, in particular designed as an O-ring or shaft seal, is arranged between the sealing tappet 6.3 and the valve body 6.7.

In the example shown according to the Figures 1 to 3 and 6, the sealing tappet 6.3 has an upper tappet section 6.3.1 arranged in the upper receiving section AOO of the receiving opening AO and an adjoining lower tappet section 6.3.2, wherein a diameter of the lower tappet section 6.3.2 is larger than a diameter of the upper tappet section 6.3.1 and also larger than a diameter of the upper receiving section AOO of the receiving opening AO. As a result, in the closed position, the sealing tappet 6.3 rests with an upper side of the lower tappet section 6.3.2 radially projecting beyond the upper tappet section 6.3.1 against an upper side of the lower receiving section AOU of the receiving opening AO radially projecting beyond the upper receiving section AOO of the receiving opening AO, wherein the seal 6.4 is arranged in between. It is arranged, for example, in a receiving groove of the lower tappet section 6.3.2. The sealing tappet 6.3 is made, for example, from aluminum or brass or another material.

In the example shown, the sealing tappet 6.3 also has a diameter reduction 6.3.3 in the upper tappet section 6.3.1 in some areas, in particular in the form of a circumferential groove. This is designed on the sealing tappet 6.3 in such a way that a lower edge area of the diameter reduction 6.3.3 is positioned below the top of the lower receiving section AOU of the receiving opening AO in the open position, i.e. when the sealing tappet 6.3 is moved downwards in the axial direction.

In the valve body 6.7, exactly one passage opening DO is formed, which runs radially outwards from the upper receiving section AOO of the receiving opening AO. The diameter reduction 6.3.3 is formed on the sealing tappet 6.3 in such a way that an upper edge region of the diameter reduction 6.3.3 is positioned above a lower opening edge of the passage opening DO in the open position, i.e. when the sealing tappet 6.3 is moved downwards in the axial direction. As a result, by moving the sealing tappet 6.3 into the open position, a fluidic connection is established between the lower receiving section AOU of the receiving opening AO, which is fluidically connected to a container interior of the container body 3, via the diameter reduction 6.3.3 in the sealing tappet 6.3 to the passage opening DO in the valve body 6.7. In the example shown, the passage opening DO opens into a circumferential distributor groove VN on an outer side of the valve body 6.7.

In the end region 2 of the container body 3, two outflow openings SO are formed opposite one another, each extending from an outside to an inside of the wall 2.1. These outflow openings SO are positioned at the level of the passage opening DO in the valve body 6.7. This refers to the valve 6 arranged in the end region 2 in a predetermined end position, ie to the valve 6 properly connected to the container body 3.

By moving the sealing tappet 6.3 into the open position, a fluidic connection is thus established between the lower receiving section AOU of the receiving opening AO, which is fluidically connected to the interior of the container body 3, via the diameter reduction 6.3.3 in the sealing tappet 6.3, the passage opening DO in the valve body 6.7, the circumferential distributor groove VN in the valve body 6.7 and the two outflow openings SO in the end region 2 to an external environment of the pressure vessel 1, in particular for the outflow of the medium located in the interior of the container, in particular the gas, in particular into an application connected to the pressure vessel 1. The circumferential distributor groove VN ensures a, in particular uniform, distribution of the medium flowing out of the one passage opening DO to the two outflow openings SO.

In other embodiments, the circumferential distributor groove VN is formed, for example, in the wall 2.1 of the end region 2, i.e. on an inner side of the wall 2.1. It is then formed circumferentially around the end region 2. An inside inlet of the respective outflow opening SO is then positioned on a groove bottom of the circumferential distributor groove VN and the distributor groove VN is positioned at the level of the passage opening DO in the valve body 6.7. This also refers to the valve 6 arranged in the end region 2 in a predetermined end position, i.e. to the valve 6 properly connected to the container body 3.

In further embodiments, it can be provided, for example, that such a distributor groove VN is formed in both the valve body 6.7 and in the end region 2. The distributor groove VN in the end region 2 is then positioned at the level of the distributor groove VN in the valve body 6.7. This also refers to the valve 6 arranged in the end region 2 in a predetermined end position, i.e. to the valve 6 properly connected to the container body 3.

In order to avoid any outflow past the valve 6 in the direction of the two outflow openings SO, a spacer is provided below the passage opening DO and A seal 6.8, in particular designed as an O-ring or shaft seal, is provided between the two outflow openings SO between the valve body 6.7 and the end region 2. In the example shown, it is arranged in a receiving groove in the valve body 6.7 and thus lies sealingly against the valve body 6.7 and also against the end region 2.

To seal the valve 6 in the axial direction outwards above the passage opening DO, in order to prevent the medium from flowing out upwards through the receiving opening AO, a seal 6.9 is arranged above the passage opening DO, which is designed, for example, as an O-ring or shaft seal. In the example shown, it is arranged in a receiving groove in the valve body 6.7 and thus lies sealingly against the valve body 6.7 and also against the sealing tappet 6.3.

The valve 6 further comprises a spring element 6.5, for example a helical spring, which presses the sealing tappet 6.3 in the axial direction against the valve body 6.7, wherein the spring element 6.5 in the example shown is compressed when the sealing tappet 6.3 moves from the closed position to the open position. This movement of the sealing tappet 6.3 occurs, for example, when the pressure vessel 1 is coupled to the application, wherein an actuating element is provided on the connection of the corresponding application, which presses the sealing tappet 6.3 against the spring force in the direction of the vessel bottom 4 when it is attached to the connection geometry 5, for example when the external thread is screwed into the connection, and thus creates a fluidic connection between an interior of the pressure vessel 1 and the application.

To support the spring element 6.5 at an end facing away from the sealing tappet 6.3, the valve 6 has a support element 6.6 which is connected to the valve body 6.7. For example, the support element 6.6 comprises an external thread and the valve body 6.7 comprises a Corresponding internal thread into which the support element 6.6 is screwed.

Inside the valve body 6.7, more precisely in the lower receiving section AOU of the receiving opening AO, the spring element 6.5 is arranged, which is supported with its first end on the support element 6.6 and with its opposite second end on the sealing tappet 6.3.

Due to the design of the valve 6, it can be screwed as a whole into the end section 2.

In order to enable the medium to flow into the valve 6, the support element 6.6 has an inflow opening EO running through the support element 6.6, so that the medium can flow through the support element 6.6 into the lower receiving section AOU of the receiving opening AO and from there, when the valve 6 is in the open position, can flow through the valve 6 and the two outflow openings SO in the manner described.

On the outside of the end region 2, a stop disk 7 is arranged below the connection geometry 5 or is formed integrally with the container body 3. This stop disk 7 forms, for example, an end stop for coupling the pressure vessel 1 to the application, for example by screwing the pressure vessel 1 into the application. In order to prevent leakage past the end region 2 on the outside, a seal 8, in particular designed as an O-ring or shaft seal, is provided above the stop disk 7. In the example shown, it is arranged in a receiving groove in the end region 2 above the stop disk 7 and thus lies sealingly against the end region 2. When the pressure vessel 1 is coupled to the application, it also lies sealingly against a corresponding contact area of the application.

Figure 7 shows a longitudinal sectional view of a valve 6 of a further embodiment of the pressure vessel 1. The vessel body 3 of the pressure vessel 1, not shown here, in particular its end region 2, is designed, for example, identically as in the Figures 1 to 5 shown and described above, ie the difference of this embodiment of the pressure vessel 1 consists in a different embodiment of the valve 6.

In the following, therefore, this other embodiment of the valve 6 according to Figure 7 described. The valve 6 is also designed here in particular as a check valve. This embodiment of the valve 6 is also arranged at least substantially within the end region 2 in the finished state of the pressure vessel 1. For this purpose, the pressure vessel 1 has the fastening structure 9 for the valve 6 formed on the inside of the wall 2.1 surrounding the opening O of the end region 2. The fastening structure 9 has in particular the internal thread arranged on the inside of the wall 2.1. The valve body 6.7 has the external thread corresponding to the internal thread of the fastening structure 9.

The valve 6 comprises the valve body 6.7, which is arranged with the upper collar-shaped valve body section 6.1 at the opening O of the end region 2. Starting from the opening O and from this collar-shaped valve body section 6.1, the valve body 6.7 projects into the end region 2.

The valve body 6.7 rests against the end region 2 in a media-tight manner. For this purpose, the diameter of the collar-shaped valve body section 6.1 of the valve body 6.7 is larger than the opening diameter of the opening O of the end region 2, whereby the contact surface facing the end region 2 is formed on the collar-shaped valve body section 6.1, which rests against the front side of the end region 2. In addition, the seal 6.2, designed in particular as an O-ring or shaft seal, is arranged between the valve body 6.7 and the end region 2. This is located in particular in the transition region between the collar-shaped valve body section 6.1 and the adjoining and projecting into the end region 2 section of the valve body 6.7 on the valve body 6.7 and in an opening edge area on the inside on the wall 2.1 of the end region 2 surrounding the opening O of the end region 2. The valve body 6.7 is made for example from aluminum or brass or another material.

The valve body 6.7 has the receiving opening AO running in the axial direction of the valve body 6.7 and penetrating it. The valve 6 also has the sealing tappet 6.3, which closes the receiving opening AO in the valve body 6.7 in a media-tight manner. This receiving opening AO has the upper receiving section AOO and the lower receiving section AOU, whereby the upper receiving section AOO has a smaller diameter than the lower receiving section AOU. The sealing tappet 6.3, which in Figure 7 shown in the closed position, penetrates the upper receiving section AOO of the receiving opening AO.

The valve 6 also comprises the spring element 6.5, for example a helical spring, which presses the sealing tappet 6.3 in the axial direction against the valve body 6.7, wherein the spring element 6.5 in the example shown is compressed when the sealing tappet 6.3 moves from the closed position to the open position. This movement of the sealing tappet 6.3 occurs, for example, when the pressure vessel 1 is coupled to the application, wherein the actuating element is provided at the connection of the corresponding application, which presses the sealing tappet 6.3 against the spring force in the direction of the vessel bottom 4 when it is attached to the connection geometry 5, for example when the external thread is screwed into the connection, and thus creates a fluidic connection between the interior of the pressure vessel 1 and the application.

To support the spring element 6.5 at the end facing away from the sealing tappet 6.3, the valve 6 has the support element 6.6, which is connected to the valve body 6.7. For example, the support element 6.6 comprises the external thread and the valve body 6.7 comprises the corresponding internal thread into which the support element 6.6 is screwed.

Inside the valve body 6.7, more precisely in the lower section AOU of the receiving opening AO, the spring element 6.5 is arranged, which is supported with its first end on the support element 6.6 and with its opposite second end on the sealing tappet 6.3.

Due to the design of the valve 6, it can be screwed as a whole into the end section 2.

In this embodiment of the valve 6, the support element 6.6 is designed to be closed. Therefore, in order to allow the medium to flow into the valve 6, the inflow opening EO is designed in the lower receiving section AOU of the receiving opening AO of the valve body 6.7. It runs radially through a wall of the valve body 6.7. As a result, the medium can also flow into the lower receiving section AOU of the receiving opening AO and from there, when the valve 6 is in the open position, flow through the valve 6 and the two outflow openings SO in the end region 2 of the container body 3.

For this purpose, the sealing tappet 6.3 releases the receiving opening AO at least in sections in an open position (not shown in detail). The passage section which the sealing tappet 6.3 releases in the open position is here a component of the lower receiving section AOU of the receiving opening AO. In order to enable this valve function, ie the media-tight closure in the closed position and the release in the open position, the seal 6.4, designed in particular as an O-ring or shaft seal, is arranged between the sealing tappet 6.3 and the valve body 6.7.

Also in this example according to Figure 7 the sealing tappet 6.3 has the upper tappet section 6.3.1 arranged in the upper receiving section AOO of the receiving opening AO and the adjoining lower tappet section 6.3.2, wherein the diameter of the lower tappet section 6.3.2 is larger than the diameter of the upper tappet section 6.3.1 and is also larger than a diameter of the upper receiving section AOO of the receiving opening AO.

As a result, in the closed position, the sealing tappet 6.3 rests with the top of the lower tappet section 6.3.2, which projects radially beyond the upper tappet section 6.3.1, on the top of the lower receiving section AOU of the receiving opening AO, which projects radially beyond the upper receiving section AOO of the receiving opening AO. However, this only serves to hold the sealing tappet 6.3 in the axial direction upwards in the valve body 6.7, i.e. to prevent the sealing tappet 6.3 from sliding upwards out of the valve body 6.7.

The seal 6.4 is arranged on the circumference of the lower tappet section 6.3.2, in particular in a receiving groove. It is positioned on the sealing tappet 6.3 in such a way that in the closed position of the sealing tappet 6.3 it is positioned above the inflow opening EO in the valve body 6.7 and in the open position it is positioned below the inflow opening EO. This means that this seal 6.4 is moved past the inflow opening EO by moving the sealing tappet 6.3. In the open position of the sealing tappet 6.3, this allows the medium to flow into the lower receiving section AOU of the receiving opening AO and then through the valve 6 and the two outflow openings SO, and in the closed position this is prevented. The sealing tappet 6.3 is made, for example, from aluminum or brass or another material.

Below the inlet opening EO, a pressure equalization opening DAO is formed in the valve body 6.7, which also runs radially through the wall of the valve body 6.7. This prevents the lower area of the lower receiving section AOU of the receiving opening AO from being sealed by the seal 6.4 when the sealing tappet 6.3 is moved into the open position, which would cause excess pressure to build up in this lower area and would therefore prevent or impede the complete movement of the sealing tappet 6.3 into the open position.

In the example shown, the sealing tappet 6.3 has the diameter reduction 6.3.3 in the lower tappet section 6.3.2 in some areas, in particular in the form of a circumferential groove, which is wider here, in particular considerably wider, than in the embodiment described above. This is designed on the sealing tappet 6.3 in such a way that a lower edge region of the diameter reduction 6.3.3 is positioned below an upper edge region of the inlet opening EO in the open position, i.e. when the sealing tappet 6.3 is moved downwards in the axial direction.

Here, too, exactly one passage opening DO is formed in the valve body 6.7, which here runs radially outwards from the lower receiving section AOU of the receiving opening AO. The diameter reduction 6.3.3 in the form of a groove is formed on the sealing tappet 6.3 such that it is positioned in the area of the passage opening DO both in the open position and in the closed position. As a result, by moving the sealing tappet 6.3 into the open position, a fluidic connection is established between the inflow opening EO, which is fluidically connected to the interior of the container body 3, via the lower section of the receiving opening AO and the diameter reduction 6.3.3 in the sealing tappet 6.3 to the passage opening DO in the valve body 6.7. In the example shown, the passage opening DO opens into the circumferential distributor groove VN on the outside of the valve body 6.7.

In this embodiment of the pressure vessel 1, the two outflow openings SO in the end region 2 of the vessel body 3 are also positioned at the level of the passage opening DO in the valve body 6.7. This refers to the valve 6 arranged in the end region 2 in a predetermined end position, i.e. to the valve 6 properly connected to the vessel body 3.

By moving the sealing tappet 6.3 into the open position, a fluidic connection is thus established between the inlet opening EO, which is fluidically connected to the interior of the container body 3, via the lower receiving section AOU of the receiving opening AO, the diameter reduction 6.3.3 in the sealing tappet 6.3, the passage opening DO in the valve body 6.7, the circumferential distributor groove VN in the valve body 6.7 and the two outflow openings SO in the end region 2 to the outside environment of the pressure vessel 1, in particular for the outflow of the medium in the interior of the container, in particular the gas, in particular into the application. The circumferential distributor groove VN ensures the, in particular even, distribution of the medium flowing out of the one passage opening DO to the two outflow openings SO.

In other embodiments, the circumferential distributor groove VN is formed, for example, in the wall 2.1 of the end region 2, i.e. on the inside of the wall 2.1. It is then formed circumferentially around the end region 2. The inside inlet of the respective outflow opening SO is then positioned at the groove bottom of the circumferential distributor groove VN and the distributor groove VN is positioned at the level of the passage opening DO in the valve body 6.7. This also refers to the valve 6 arranged in the end region 2 in a predetermined end position, i.e. to the valve 6 properly connected to the container body 3.

In further embodiments, it can be provided, for example, that such a distributor groove VN is formed both in the valve body 6.7 and in the end region 2. The distributor groove VN in the end region 2 is then Height of the distributor groove VN in the valve body 6.7. This also refers to the valve 6 arranged in the end region 2 in a predetermined end position, ie to the valve 6 properly connected to the container body 3.

In order to prevent the flow past the valve 6 on the outside in the direction of the two outflow openings SO, the seal 6.8, designed in particular as an O-ring or shaft seal, is also provided in this embodiment of the valve 6 below the passage opening DO and the two outflow openings SO between the valve body 6.7 and the end region 2. In the example shown, it is arranged in the receiving groove in the valve body 6.7 and thus lies sealingly against the valve body 6.7 and also against the end region 2.

To seal the valve 6 in the axial direction outwards above the passage opening DO, in order to prevent the medium from flowing out upwards through the receiving opening AO, the seal 6.9, which is designed as an O-ring or shaft seal, for example, is arranged above the passage opening DO. In the example shown, it is arranged in a receiving groove in the sealing tappet 6.3 and thus lies sealingly against the sealing tappet 6.3 and also against the valve body 6.7.

In summary, in both embodiments of the pressure vessel 1, a seal 6.2, 6.8 is arranged between the valve body 6.7 and the end region 2 above and below the passage opening DO. The seal 6.2 above the passage opening DO prevents the medium from flowing out of the opening O in the end region 2 upwards out of the vessel body 3. The seal 6.8 below the passage opening DO prevents the medium from flowing between the wall 2.1 of the end region 2 and the valve body 6.7 and thus past the valve 6 in the direction of the outflow openings SO in the wall 2.1 of the end region 2.

In the two embodiments of the pressure vessel 1, two seals 6.4, 6.9 are also arranged between the valve body 6.7 and the sealing tappet 6.3. One seal 6.9 is arranged above the passage opening DO to prevent the medium from flowing out of the receiving opening AO upwards, so that it is ensured that the medium flows out laterally exclusively via the two lateral outflow openings SO. The other seal 6.4 is arranged below the passage opening DO. With it, the fluidic connection between the passage opening DO and the area of the receiving opening AO that is fluidically connected to the interior of the vessel body 3 is prevented in the closed position of the sealing tappet 6.3 and released in the open position of the sealing tappet 6.3.

In both embodiments of the pressure vessel 1, the passage opening DO is fluidically connected to the receiving opening AO and the sealing tappet 6.3 closes the receiving opening AO and thereby also the passage opening DO in a media-tight manner in the closed position and, in the open position, releases the receiving opening AO at least in sections and thereby also releases the passage opening DO. The passage opening DO is thus closed in a media-tight manner in particular indirectly by means of the sealing tappet 6.3 in the closed position by closing the receiving opening AO and thereby the passage opening DO fluidically connected to it in a media-tight manner.

LIST OF REFERENCE SYMBOLS

1

pressure vessel

2

End area

2.1

Wall

3

Container body

4

Container bottom

5

Connection geometry

6

Valve

6.1

collar-shaped valve body section

6.2

poetry

6.3

Sealing tappet

6.3.1

upper tappet section

6.3.2

lower tappet section

6.3.3

Diameter reduction

6.4

poetry

6.5

Spring element

6.6

Support element

6.7

Valve body

6.8

poetry

6.9

poetry

7

Stop disc

8th

poetry

9

Mounting structure

AO

Receiving opening

AOO

upper receiving section

AOU

lower receiving section

DAO

Pressure equalization opening

DO

Passage opening

EO

Inlet opening

O

opening

SO

Outlet opening

VN

Distributor groove

Claims (12)

1. Pressure container (1) having

   - a container body (3), wherein an end region (2) having an opening (O) is formed in one piece with the container body (3) at an upper end of the container body (3), and

   - a fastening structure (9) for a valve (6), which fastening structure is formed on the inside of a wall (2.1) which surrounds the opening (O) of the end region (2),

   characterized in that the valve (6) is arranged in the opening (O), and at least two outflow openings (SO), which are arranged in particular situated opposite one another, are formed for the valve (6) in the wall (2.1) that surrounds this opening (O) of the end region (2).
2. Pressure container (1) according to Claim 1,
   characterized in that the valve (6) has only a single passage opening (DO).
3. Pressure container (1) according to Claim 2,
   characterized in that a valve body (6.7) of the valve (6) has exactly one passage opening (DO), which is formed radially from an inner side in the direction of an outer side of the valve body (6.7).
4. Pressure container (1) according to Claim 3,
   characterized in that the passage opening (DO) in the valve body (6.7) is positioned at the height of the outflow openings (SO) in the end region (2).
5. Pressure container (1) according to one of the preceding claims,
   characterized in that the passage opening (DO) opens out into a distributor groove (VN) which is formed on the outer side of the valve body (6.7) in a manner encircling therein, and/or in that an inner opening edge of the respective outflow opening (SO) is arranged on a groove base of an encircling distributor groove (VN) which is formed on the inner side of the wall (2.1) of the end region (2).
6. Pressure container (1) according to one of the preceding claims,
   characterized in that the fastening structure (9) has an internal thread which is arranged on the inner side of the wall (2.1).
7. Pressure container (1) according to Claim 6,
   characterized in that the valve body (6.7) has an external thread which corresponds to the internal thread of the fastening structure (9), wherein the valve body (6.7), in the state screwed into the internal thread, is arranged in the region of the opening (O) of the end region (2), projects from the opening (O) into the end region (2), bears against the end region (2) in a media-tight manner and has a receptacle opening (AO), there being arranged in said receptacle opening a sealing plunger (6.3) which, in a closed position, closes off the passage opening (DO) in a media-tight manner and, in an open position, opens up the passage opening (DO), wherein the valve (6) has a supporting element (6.6), which is connected to the valve body (6.7) or is formed on the valve body (6.7), and a spring element (6.5), which is arranged within the valve body (6.7) and is supported at a first end against the supporting element (6.6) and at an opposite second end against the sealing plunger (6.3), wherein the spring element (6.5) is stressed when the sealing plunger (6.3) is moved from the closed position into the open position.
8. Pressure container (1) according to Claim 7,
   characterized in that the passage opening (DO) is connected fluidically to the receptacle opening (AO), and the sealing plunger (6.3), in the closed position, closes off the receptacle opening (AO), and thus also the passage opening (DO), in a media-tight manner and, in the open position, at least sectionally opens up the receptacle opening (AO) and thus also opens up the passage opening (DO).
9. Pressure container (1) according to one of Claims 3 to 8,
   characterized in that the supporting element (6.6) and/or the valve body (6.7) have/has an inflow opening (EO).
10. Pressure container (1) according to one of Claims 3 to 9,
    characterized in that the valve body (6.7) has a pressure-equalization opening (DAO).
11. Pressure container (1) according to one of the preceding claims,
    characterized in that the container body (3) has a container base (4) which is arranged on a lower end and which is formed in one piece with the container body (3).
12. Pressure container (1) according to one of the preceding claims,
    characterized in that the container body (3) has a connection geometry (5) which is arranged on the outside of a wall (2.1) which surrounds the opening (O) of the end region (2), wherein the wall (2.1) forms with the connection geometry (5) a connection which is configured to be coupled, or in a state coupled, in a media-tight manner to a corresponding further connection.

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