EP3141791B1 - System for delivery of gas - Google Patents

Description

FIELD OF THE INVENTION

The present invention relates to a system for providing gas, the system comprising a gas container with an inner volume for receiving gas, the gas container comprising a base body with a base body head, wherein the base body at least partially forms the inner volume and, preferably in the region of the base body head , is sealed, the gas container further comprising a sealing and guiding element which has a cavity for receiving a Aufstechlanze and an opening which is arranged on a side facing away from the base body of the sealing and guiding element and provided for introducing the Aufstechlanze into the cavity wherein a seal is disposed in the cavity to be tightly engaged with a sealing surface disposed on the piercing lance, the system further comprising a piercing unit for opening the gas container, the piercing unit comprising a receiving member for receiving the Indest a portion of the sealing and guiding element and the Aufstechlanze comprises and a fastening element on which the receiving element is arranged, wherein the Aufstecheinheit further comprises a spring element, wherein the Aufstecheinheit, in particular the spring element is designed such that a force support during withdrawal or a automatic sliding out of the arranged in the sealing and guiding element Aufstechlanze, in particular the piercing tip is guaranteed after opening the gas container.

STATE OF THE ART

Gas containers filled with gas may be provided with a device such as a soda siphon or a pressure regulator, be connected in a gastight manner to ensure a corresponding gas supply to the device.

In this regard, discloses the US 2012/0073674 A1 a gas supply system comprising a gas capsule with a bottle side can be arranged on an end face cap that surrounds the neck of the bottle on the outside. The gas supply system further comprises a Aufstecheinheit with a Aufstechlanze, wherein the cap forms a cavity for receiving the Aufstechlanze and wherein the gas capsule is gas-tightly closed by means of a arranged on the end face pierceable membrane. In this case, the cap and the Aufstechlanze each have a groove-shaped recess for receiving a seal, which attack when opening the gas capsule, the seal of the cap on the end face of the gas capsule and arranged on the Aufstechlanze seal on the cavity.

This results in the problem that caused by the gas at the end face of the gas capsule for sealing an unfavorable handling when placing the cap on the end face of the gas capsule and caused by the higher cost of materials additional costs. Furthermore, given a non-exact positioning of the seal in the groove-shaped recess of the cap there is the risk that the seal in the arrangement of the cap on the end face of the gas capsule is destroyed or pinched, so that no tightness can be guaranteed or ensured.

Due to this problem, the user must be extremely cautious when applying the cap, in which the gasket is inserted in the bottle-side groove-shaped recess on the end face of the gas capsule, whereby no easy and quick handling can be guaranteed.

In addition, results from the direct arrangement of a seal on the Aufstechlanze the problem that these on Cavity attacking seal must be renewed or replaced frequently by the user himself, since gas would escape in the event of a faulty seal. This is necessary because repeated use of the same seal inevitably wear and thus leakage problems occur.

From the US 2613849 A For example, a container for a pressurized fluid is known, which is sealed in a tapered end portion. In this end portion, a cavity is arranged with an opening, wherein the cavity for receiving a nozzle element arranged on a Aufstechlanze is provided. To achieve a sealing effect when piercing a seal in the cavity, which rests on the piercing lance when piercing, as well as a nozzle member arranged on the seal, which abuts when piercing at an upper edge provided. A spring presses with the interposition of a lever arm on the nozzle member to control the output of the fluid.

From the FR 1074398 A a container for a pressurized fluid is known, which is closed in the region of a convergent neck with an elastic capsule. The capsule may for example be made of natural rubber and is held in a groove.

From the FR 1409352 A Also, a container for a pressurized fluid is known, wherein the container is pierceable with a lance. However, a sealing and guiding element with a cavity for receiving the lance, in which cavity a seal for the lance is arranged, is not disclosed.

From the FR 1038427 A is another container or a system for providing compressed gas, preferably known for fire extinguishers. The system includes a gas cartridge, a piercing lance with a spring element and a sealing and guiding element. The gas cartridge is firmly in the fire extinguisher screwed, and the Aufstechlanze can only press from above on the sealing and guiding element to pierce this, the Aufstechlanze must be pulled out by means of the spring element mandatory to allow gas flow.

OBJECT OF THE INVENTION

It is therefore an object of the invention to provide means which avoid the disadvantages mentioned above. In particular, a gas container is to be created, with which a gas-tight connection with a Aufstecheinheit can be performed quickly and thus safe use of the gas capsule is made possible without the risk that suddenly no gas-tightness is given, with the handiness be the greatest possible should. In addition, the susceptibility to error during handling should be as low as possible, so that the gas container is particularly easy to remove from the piercing unit automatically or manually after the outflow of the gas.

PRESENTATION OF THE INVENTION

In order to achieve the above object, there is provided a system for providing gas, the system comprising a gas container having an internal volume for holding gas, the gas container comprising a base body having a base body head, the base body at least partially forming the internal volume, and Preferably, in the region of the base body head, is sealed, the gas container further comprising a sealing and guiding element which has a cavity for receiving a Aufstechlanze and an opening disposed on a side facing away from the base body of the sealing and guiding element and for introducing the Aufstechlanze is provided in the cavity, wherein in the cavity a seal is arranged to be tightly engaged with a arranged on the Aufstechlanze sealing surface, the system further comprising a piercing unit for opening the gas container, wherein the piercing unit comprises a receiving element for receiving at least a portion of the sealing and guiding element and the Aufstechlanze and a fastening element on which the receiving element is arranged, further comprising the piercing unit comprises a spring element, wherein the Aufstecheinheit, in particular the spring element is designed such that a force support during withdrawal or an automatic sliding out of the arranged in the sealing and guiding element Aufstechlanze, in particular the Aufstechspitze, after opening the gas container is ensured. That is, the spring element or the piercing unit is designed so that the spring force of the spring element counteracts when opening the gas container by piercing the sealing and guiding element by means of Aufstechlanze or Aufstechspitze. This allows a lower susceptibility to error during handling or avoids any sticking or jamming of the piercing lance in the seal and / or the piercing tip in the sealing surface of the sealing and guiding element after the piercing process, so that the gas container according to the invention automatically or simply from the piercing unit manually removable after the outflow of the gas. It should be noted that it is preferably a compression spring, wherein other mechanical spring elements, such as spring plates, elastomer springs, leaf or disc springs, are also used.

According to the invention, it is provided that the sealing and guiding element is arranged at least in sections within the base body head and is fixedly connected thereto, that the piercing unit has a force transmission element on which

Opening the gas container which is arranged on the base body head sealing and guide element is arranged, and preferably comprises a guide for the spring element, that the force transmission element is designed as a guide for the spring element, that the force transmission element is annular and has a U- or L-shaped cross-sectional profile or that the force transmission element is disk-shaped and that for opening the gas container, the gas container and the piercing unit are movable relative to each other.

The solid connection of the sealing and guiding element with the base body head can be a direct solid connection or an indirect fixed connection, the latter being able to take place in particular in a region outside the base body head by a direct, firm connection to the base body.

The result is that it is possible to dispense with a cap which can be placed on the outside, since the sealing and guiding element on the one hand takes over the guidance of the piercing lance and on the other hand ensures the tightness of the piercing lance by means of the seal arranged in the cavity so that no gas is present between the inserted piercing lance and the sealing and guiding element can escape. To create a gas-tight system for providing gas, therefore, in particular no separate seal is required between an end face of the gas container or of the base body and the supposed cap.

A placement or insertion of the sealing and guiding element and thus a potentially cumbersome handling with multiple parts completely eliminated, since the sealing and guiding element is firmly connected to the base body and the base body head. This guarantees a maximum comfortable and error-free operation by the user.

The gas container may typically be filled with CO ₂ or N ₂ O.

Here and below "dense" is to be understood in particular as dense for the gas to be absorbed.

The sealing surface of the piercing lance is preferably arranged on a shell side of the piercing lance.

The gas container can be designed as a gas capsule. The gas container may have a completely cylindrical base body. The gas can but also eg have a base body whose base body head narrows bottle-neck.

The tight closure of the base body can be effected by a membrane, which is preferably arranged in the region of the base body head. Preferably, in this case, the membrane between the inner volume and the sealing and guiding element is arranged. In this case, the piercing lance for piercing the membrane is provided to allow outflow of the gas located in the inner volume.

Alternatively or additionally, it is provided in a preferred embodiment of the system according to the invention that the sealing and guiding element sealingly seals the base body. In the case of an alternative tight closure by the sealing and guiding element, the piercing lance is provided for piercing the sealing and guiding element in order to allow outflow of the gas located in the inner volume. This variant has the advantage of a manufacturing technology easy manufacturability, as can be dispensed with a membrane. In the case of an additional tight closure by the sealing and guiding element, the piercing lance for piercing the sealing and guiding element and the membrane is provided to allow outflow of the gas located in the inner volume. This variant has the advantage of an extremely high tightness of the gas container.

With regard to an optimal arrangement of the seal in the cavity, it is provided in a preferred embodiment of the system according to the invention that the cavity for receiving the seal at least in sections has a groove-shaped cross-section. By such a cross-section, a recess is formed, in which the seal can be easily inserted.

It is provided in a preferred embodiment of the system according to the invention that the seal is annular, preferably designed as an O-ring.

In a further advantageous embodiment of the system according to the invention, the sealing and guiding element comprises a connecting portion, which projects through an open end face of the base body in the base body head. As a result, an extremely robust connection is possible because an externally applied force can not act directly on the connection between the sealing and guiding element and the base body head.

In a particularly preferred embodiment of the system according to the invention, it is provided that the sealing and guiding element has a substantially T-shaped cross section, wherein the connecting portion has a cross section whose shape forms the longitudinal beam of the T-shaped cross section. The sealing and guiding element can thus be easily inserted into the base body in the area of the base body head during production, like a stopper.

In order to produce a tight connection between the sealing and guiding element and the base body in a structurally simple and safe manner, it is provided in a preferred embodiment of the system according to the invention that the tight closure of the base body by the sealing and guiding element by a tight connection of the sealing and guiding element with the base body in the region of the connecting portion on the one hand and the base body head on the other hand is formed and / or by a tight connection of the sealing and guiding element with the base body in the region of the end face of the base body. In the latter case, the sealed connection is preferably arranged in that region of the sealing and guiding element whose cross-section in FIG its shape corresponds to the crossbar of the T-shaped cross-section.

In order to produce a secure tight connection of the connecting portion with the base body head, it is provided in a preferred embodiment of the system according to the invention, that the connecting portion with at least a portion of the base body head welded and / or screwed and / or pressed and / or glued.

In particular, for the case that a dense or the base body sealing tight connection between the sealing and guiding element and the base body, it is provided in a preferred embodiment of the system according to the invention that the sealing and guiding element of the opening opposite, preferably on Closing surface arranged connecting portion, wherein the closure surface has a Aufstechbereich with a weakened wall thickness of 0.1 mm to 1.0 mm, preferably from 0.2 mm to 0.3 mm, in order to be pierced by means of the Aufstechlanze can. For example, a wall thickness of 0.25 mm may be present in said region. Areas of the sealing and guiding element, which are not provided for piercing by the Aufstechlanze, may accordingly have a greater wall thickness.

In order to enable piercing particularly reliable, the shape of the closure surface can be adapted to the shape of the piercing lance. Therefore, it is provided in a particularly preferred embodiment of the system according to the invention that the closure surface is flat or curved or conical.

In order to provide a dimensionally stable and also robust as possible sealing and guiding element, which can form a solid connection with the base body or the base body head, it is provided in a preferred embodiment of the system according to the invention that the base body and / or the sealing and guiding element made of metal, preferably steel, are formed.

In this case, the closure surface is preferably pierceable by means of a piercing tip arranged on the piercing lance, the piercing unit being designed so that gas can flow from the gas container through a gas flow channel formed in the piercing lance and the piercing tip in the pierced state. The piercing tip may have a corresponding shape for easier piercing. Furthermore, the piercing tip can be made of a suitably hard material for easier piercing, which can be harder than the material of the remaining piercing lance. By only the piercing tip is made of the harder material, costs can be saved if necessary. Therefore, it is provided in a preferred embodiment of the system according to the invention that the Aufstechlanze has a Aufstechspitze to pierce the closure surface, wherein the piercing tip preferably has a greater hardness than the remaining Aufstechlanze.

It should be noted that in a further embodiment, the closure surface can be pierced directly by means of the piercing lance without any piercing tip.

Any gas escaping laterally into the cavity through the opening formed by means of the piercing lance or by means of the piercing tip can be formed by the direct arrangement and tight connection of the sealing and guiding element in the area of the base body head, preferably on the end face of the base body, and through the cavity arranged in the cavity and on the Aufstechlanze attacking seal does not escape further, so that the gas can escape only through the gas flow channel. As a result, the gas flows into the intended device, for example into one Soda siphon, in a device for the production of whipped cream or in another gas-based device. Accordingly, in a preferred embodiment of the system according to the invention it is provided that the piercing lance, and preferably also the piercing tip, has a gas flow channel in order to allow gas to flow out of the gas container in the pierced state.

In a preferred embodiment of the system according to the invention, it is provided that the piercing lance is cylindrical or cone-shaped. This embodiment of the Aufstechlanze increased security in creating a gas-tight system is given.

It is provided in a preferred embodiment of the system according to the invention, that as an abutment / stop surface for limiting the path of the closed by means of the sealing and guiding element gas container and / or the Aufstecheinheit piercing the closure surface an insertion of the Aufstecheinheit and / or an external stop and / or preferably a defined block length of the spring element are provided.

• Einsetzen von zumindest dem Dicht- und Führungselement in einen Einführabschnitt einer Aufstecheinheit;
• Herbeiführen einer zueinander gerichteten Relativbewegung zwischen dem Gasbehälter und einer in einer Aufstecheinheit angeordneten Aufstechlanze, sodass die Aufstechlanze durch die Öffnung in den Hohlraum ragt;
• Weiterbewegen des Gasbehälters in Richtung Aufstechlanze, vorzugsweise in Richtung einer an der Aufstechlanze angeordneten Aufstechspitze, sodass eine an dem Dicht- und Führungselement angeordnete Verschlussfläche durchstochen wird und Gas aus dem inneren Volumen des Gasbehälters durch einen in der Aufstechlanze und der Aufstechspitze angeordneten Gasströmungskanal strömen kann.

Analogous to the above, a method for opening a sealed gas container is provided, which comprises the following steps:

• Inserting at least the sealing and guiding element into an insertion section of a piercing unit;
• Inducing a relative movement directed towards one another between the gas container and a piercing lance arranged in a piercing unit so that the piercing lance projects through the opening into the cavity;
• Moving the gas container in the direction of Aufstechlanze, preferably in the direction of a Aufstechlanze arranged Aufstechspitze so that arranged on the sealing and guiding element closure surface is pierced and gas from the inner volume of the gas container can flow through a arranged in the Aufstechlanze and Aufstechspitze gas flow channel.

In one embodiment of the method according to the invention, a spring force caused by the spring element arranged inside the piercing unit counteracts the movement of the gas container during opening in such a way that a force assistance during withdrawal or automatic slipping out of the piercing tip arranged in the sealing and guiding element is ensured after opening the gas container becomes. This will facilitate the removal of the Sealing and guiding element provided gas container from the Aufstecheinheit guaranteed because any sticking or jamming of the piercing lance in the seal and / or the piercing tip is avoided in the sealing and guiding element. Accordingly, it is provided according to the invention that a spring force caused by a spring element arranged within the piercing unit counteracts the movement of the gas container during opening in such a way that a force assistance during withdrawal or an automatic slipping out of the piercing lance, in particular piercing tip, arranged in the sealing and guiding element the opening of the gas container is ensured.

It should be noted that the seal arranged within the cavity is preferably compressed by the sealing surface of the piercing lance when piercing the sealing and guiding element. This is stronger if the Aufstechlanze and thus the sealing surface is not cylindrical, but conically converging, in particular in the direction of the Aufstechspitze is formed conically converging. Accordingly, it is provided in a preferred embodiment of the method according to the invention that, at least during piercing, the seal disposed within the cavity is compressed by a sealing surface of the piercing lance.

BRIEF DESCRIPTION OF THE FIGURES

The invention will now be explained in more detail with reference to exemplary embodiments. The drawings are exemplary and are intended to illustrate the inventive idea, but in no way restrict it or even reproduce it.

Fig. 1

eine perspektivische Darstellung eines Gasbehälters mit einem Dicht- und Führungselement

Fig. 2a - Fig. 2c

Schnittdarstellungen von Gasbehältern mit verschiedenartig ausgebildeten Dichtungen, die im Dicht- und Führungselement angeordnet sind

Fig. 2d - Fig. 2g

Schnittdarstellungen von Gasbehältern, wobei verschiedenartig ausgebildete Verbindungsformen eines Basiskörpers des Gasbehälters mit dem Dicht- und Führungselement dargestellt sind

Fig. 2h - Fig. 2i

Schnittdarstellungen von Gasbehältern, wobei verschiedenartig ausgebildete Verschlussflächen des Dicht- und Führungselements dargestellt sind

Fig. 3

eine Schnittdarstellung einer Aufstecheinheit eines Systems zur Bereitstellung von Gas

Fig. 4

eine Schnittdarstellung des Systems mit einem Gasbehälter, der abschnittsweise in einem Aufnahmeelement der Aufstecheinheit aufgenommen, aber noch nicht geöffnet ist

Fig. 5

eine Schnittdarstellung analog zu Fig. 4, wobei das Dicht- und Führungselement des Gasbehälters mittels der Aufstecheinheit aufgestochen ist

Fig. 6

eine Schnittdarstellung einer erfindungsgemäßen Ausführungsform der Aufstecheinheit, welche ein Federelement aufweist

Fig. 7

eine Schnittdarstellung analog zu Fig. 4, jedoch mit der Aufstecheinheit aus Fig. 6

Fig. 8

eine Schnittdarstellung analog zu Fig. 5, jedoch mit der Aufstecheinheit aus Fig. 6

Showing:

Fig. 1

a perspective view of a gas container with a sealing and guiding element

Fig. 2a - Fig. 2c

Sectional views of gas containers with differently shaped seals, which are arranged in the sealing and guiding element

Fig. 2d - Fig. 2g

Sectional views of gas containers, wherein variously formed connection forms of a base body of the gas container are shown with the sealing and guiding element

Fig. 2h - Fig. 2i

Sectional views of gas containers, wherein variously shaped closure surfaces of the sealing and guiding element are shown

Fig. 3

a sectional view of a Aufstecheinheit a system for providing gas

Fig. 4

a sectional view of the system with a gas container, which is partially taken in a receiving element of the Aufstecheinheit, but not yet open

Fig. 5

a sectional view analogous to Fig. 4 , wherein the sealing and guiding element of the gas container is pierced by the Aufstecheinheit

Fig. 6

a sectional view of an embodiment of the invention Aufstecheinheit, which has a spring element

Fig. 7

a sectional view analogous to Fig. 4 , but with the Aufstecheinheit off Fig. 6

Fig. 8

a sectional view analogous to Fig. 5 , but with the Aufstecheinheit off Fig. 6

WAYS FOR CARRYING OUT THE INVENTION

Fig. 1 shows a perspective view of a gas container 1 ', which comprises a base body 1 with a base body head 2. At the base body head 2, a sealing and guiding element 5 is arranged, which is arranged in sections within the base body head 2 and fixedly connected to the base body head 2. Here, in the illustrated embodiment, the connection between the sealing and guiding element 5 and the base body head 2 is a dense or gas-tight connection, so that the sealing and guiding element 5, the base body 1 ', which forms an inner volume for receiving gas 4, or the gas container 1 'tightly seals.

The sealing and guiding element 5 has for receiving a Aufstechlanze 15 (see, eg Fig. 4 ) a cavity 7 (cf., eg Fig. 2a ) through the opening 9, the piercing lance 15 for piercing or piercing of the sealing and guiding element 5 are introduced, wherein the sealing and guiding element 5 made of metal, preferably steel , In particular, stainless steel is formed, with different materials such as plastics are also used.

Fig. 2a, Fig. 2b and Fig. 2c show sectional views of the sealed by means of the sealing and guiding element 5 and filled with gas 4 gas container 1 ^x .

The base body 1 has an open end face 3.

In the sealing and guiding element 5 differently shaped annular seals 12 may be arranged. It is in accordance with Fig. 2a preferably an O-ring used as a seal 12. In detail, the seal 12 is arranged in the cavity 7, through which according to Fig. 4 when opening the gas container 1 'with a shell side of the piercing lance 15 arranged sealing surface 18 ensures a gas-tight connection.

In this case, the cavity 7 for receiving the Aufstechlanze 15 and the seal 12 is preferably at least partially groove-shaped or has the cavity 7 at least partially a groove-shaped cross-section. This essentially serves to hold or fix the seal 12 in its position without any additional aids.

It is in the FIGS. 2a, 2b . 2c, 2d . 2e . 2f, 2g, 2h and 2i it can be seen that the sealing and guiding element 5 comprises a connecting portion 8 which projects through the open end face 3 into the base body head 2. It can be seen in the illustrated embodiments that the sealing and guiding element 5 has a substantially T-shaped cross section, wherein the connecting portion 8 has a cross section whose shape forms the longitudinal beam of the T-shaped cross section.

The sealing and guiding element 5 has an opening 9 opposite, arranged on the connecting portion 8 closure surface 10. In order to ensure a simpler piercing or piercing of the closure surface 10 by means of the piercing lance 15 as well as an increased gas flow, the closure surface 10 can be planar (in accordance with FIG Fig. 2a to Fig. 2g ) or arched (according to Fig. 2h ) or conical (according to Fig. 2i ) be formed.

Here is in Fig. 2a to Fig. 2i It can also be seen that the closure surface 10 arranged on the sealing and guiding element 5, at least in a piercing region 11, has a weakened wall thickness of 0.1 mm to 1.0 mm, preferably of 0.2 mm to 0.3 mm, in particular 0.25 mm , having. This serves to allow a simpler piercing or piercing the closure surface 10.

Fig. 2d to Fig. 2g show sectional views of the means of the sealing and guiding element 5 gas-tight sealed gas container 1 ', wherein variously formed connection forms of the base body 1 and the base body head 2 with the sealing and guiding element 5 are shown. In detail is in Fig. 2d the sealing and guiding element 5 or the connecting section 8 is welded to the base body head 2 only at the end face 3 in order to produce a gas-tight welded connection 8a, while in FIG Fig. 2e the entire contact surface of the connecting portion 8 is welded to the inner portion of the base body head 2, for example by means of a friction welding process.

It is however according to Fig. 2f also possible to provide the connecting portion 8 with a thread which engages in a arranged in the base body head 2 thread or internal thread to realize a gas-tight screw connection 8b.

It is also possible to press the connecting portion 8 of the sealing and guiding element 5 with the base body head 2, wherein in Fig. 2g Such a gas-tight press connection 8c is illustrated by way of example. Fig. 2e shows another example of a possible gas-tight press connection 8c.

In a further conceivable embodiment, the connecting portion 8 is bonded to the inner region of the base body head 2, wherein the gas-tight adhesive joint according to the in Fig. 2d and Fig. 2e illustrated welded joints 8a may be formed.

Fig. 3 shows a sectional view of a Aufstecheinheit 13 of a system for providing gas 4, which comprises a receiving element 19 for receiving at least a portion of the sealing and guiding element 5 in an insertion section 14 and the Aufstechlanze 15 for piercing the closure surface 10 of the sealing and guiding element 5. Preferably the receiving element 19 is also designed to receive at least a portion of the base body head 2.

Preferably, a specially provided piercing tip 16 is arranged on the piercing lance 15.

Here, the piercing lance 15 preferably has its own chamfer or inlet slope, by which the seal 12 is protected in the cavity 7 during opening of the gas container 1 'from any damage. Gas 4 can flow from the gas container 1 'or base body 1 through a gas flow channel 17 formed in the piercing lance 15 and the piercing tip 16 in the pierced state, wherein the piercing lance 15 is cylindrical in the illustrated embodiment; in the same way, however, the piercing lance 15 can also be designed conical.

• .) den Gasbehälter 1' zur Aufnahme des Gases 4, welcher den Basiskörper 1 mit dem Basiskörperkopf 2 umfasst sowie das Dicht- und Führungselement 5, welches am Basiskörperkopf 2 angeordnet und mit diesem fest verbunden ist und den Hohlraum 7 mit der dem Basiskörperkopf 2 gegenüberliegenden Öffnung 9 zum Einführen der Aufstechlanze 15 umfasst;
• .) die Aufstecheinheit 13, welche das Aufnahmeelement 19 zur Aufnahme von zumindest einem Abschnitt des Dicht- und Führungselements 5 und die Aufstechlanze 15, um einen Gasaustritt aus dem Gasbehälter 1' bzw. dem Basiskörper 1 herzustellen, umfasst.

To this end is in Fig. 4 a sectional view of a system is shown, wherein the system comprises:

• .) The gas container 1 'for receiving the gas 4, which comprises the base body 1 with the base body head 2 and the sealing and guiding element 5, which is arranged on the base body head 2 and fixedly connected thereto and the cavity 7 with the base body head 2 opposite Opening 9 for inserting the piercing lance 15 comprises;
• .) The Aufstecheinheit 13, which comprises the receiving element 19 for receiving at least a portion of the sealing and guiding element 5 and the Aufstechlanze 15 to produce a gas outlet from the gas container 1 'and the base body 1, respectively.

It is in Fig. 4 the piercing lance 15 formed with the piercing tip 16 is already arranged in the cavity 7 such that the seal 12 arranged inside the cavity 7 is compressed by the sealing face 18 of the piercing lance 15 and by the section 6.

It should be noted that the insertion section 14 is formed for at least partially receiving the gas container 1 'with the sealing and guiding element 5, wherein the insertion section 14 additionally in the Fig. 3 to Fig. 8 shown chamfer or inlet slope for simplified insertion of the arranged on the base body head 2 sealing and guiding element 5 may have.

In another application step of the system is according to Fig. 5 the gas container 1 'tightly sealing sealing and guiding element 5 or its closure surface 10 pierced by means of the piercing tip 16 of the piercing lance 15. For this purpose, the movably arranged gas container 1 'is pushed in the direction of the piercing unit 13 fixed in its position up to a stop / stop surface defined by the insertion section 14, whereby the closure surface 10 is pierced and the gas located in the gas container 1' or base body 1 4 through the gas flow channel 17 in a device, for example in a soda siphon or in a Whipped cream device, can flow.

In this case, the set by the insertion portion 14 stop surface is not mandatory, since the limitation of the relative movement of the gas container 1 'to the fixed Aufstecheinheit 13 also by an externally located, so located outside the Aufstecheinheit 13 stop is possible.

It should be noted that between the gas container 1 'and the Aufstecheinheit 13, a relative movement must be possible. The embodiment shown in the figures, in which the gas container 1 'movable and the Aufstecheinheit 13 are fixed, is only one possible Embodiment. In the same way, it is possible that the gas container 1 'fixed and the piercing unit 13 are arranged to be movable or that both the gas container 1' and the Aufstecheinheit 13 are arranged to be movable relative to each other.

The gas 4 escaping laterally into the cavity 7 through the opening formed by means of the piercing tip 16 can not escape further through the seal 12 arranged in the cavity 7 and acting on the piercing lance 15, so that the gas 4 can only flow through the gas flow channel 17. As a result, the gas 4 flows into the intended device, for example into a soda siphon, into a device for producing whipped cream or into another gas-based device.

In Fig. 6 an embodiment according to the invention of the Aufstecheinheit 13 is shown with a spring element 22 to support the safe removal of the provided with the pierced sealing and guiding element 5 gas container 1 '. This spring element 22 is disposed within the Aufstecheinheit 13 or designed such that the spring force opposes the opening of the gas container 1 'by piercing the sealing and guiding element 5 by means of the piercing tip 16 of the movement of the gas container 1' during opening, whereby a force assistance when pulling out or an automatic sliding out of arranged in the sealing and guiding element 5 Aufstechlanze 15 or Aufstechspitze 16 after opening the gas container 1 'is ensured when the Aufstecheinheit 13 and the gas container 1' are moved away from each other again.

In the advantageous embodiment according to Fig. 6 the piercing unit 13 additionally has a fastening element 20, on which the receiving element 19 is arranged, a force-transmitting element 23, on which the opening of the Gas container 1 'which is arranged on the base body head 2 sealing and guiding element 5, and a guide 21 for the spring element 22. In detail, the fastening element 20 forms with the receiving element 19 has a further cavity 24 with an opening. In this case, the spring element 22 together with the power transmission element 23 and guide 21 are disposed within the further cavity 24, wherein by the insertion section 14 of the sealed with the sealing and guiding element 5 gas container 1 'in the other cavity 24 is feasible such that the Aufstechlanze 15 through the Opening 9 projects into the cavity 7 of the sealing and guiding element 5 and the sealing and guiding element 5 rests against the force transmission element 23. In the illustrated embodiment, the power transmission element 23 is designed in a ring shape with a U-profile in order to additionally act as a guide for the spring element 22.

In a simplified embodiment (not shown), the sealing and guiding element 5 rests only on the spring element 22, i. without intermediate power transmission element 23rd

In Fig. 7 is a sectional view of the entire system according to the invention with spring element 22 is shown, wherein the Aufstechspitze 16 formed Aufstechlanze 15 is already disposed within the cavity 7 of the sealing and guiding element 5. In this case, the introduced into the receiving portion 14 gas container 1 'presses against the spring element 22 and compresses this already to a certain extent. In this case, the gas container 1 'with the sealing and guiding element 5 presses against the force transmission element 23, which bears against the spring element 22.

Fig. 8 shows a sectional view of the system according to the invention with spring element 22, wherein the gas container 1 ' closing sealing and guiding element 5 is pierced by the Aufstecheinheit 13.

In Fig. 6 to Fig. 8 It can also be seen that the force transmission element 23 is further designed as a guide for the spring element 22. This is possible in the illustrated embodiment with the aid of the U-profile-shaped cross-sectional shape of the annular force transmission element 23, wherein other cross-sectional shapes, for example an L-shape, can be realized in the same way.

In the simplest case, the power transmission element 23 has a simple disk shape.

In the in Fig. 6 to Fig. 8 illustrated embodiment is a leg of the annular, U-shaped power transmission element 23 directly to the Aufstechlanze 15 such that the spring element 22 is guided by this voltage applied to the Aufstechlanze 15 leg and the guide 21, wherein the spring element 22 and the force transmission element 23 within the by the receiving element 19 and the fastener 20 defined further cavity 24 into which the gas container 1 'via the insertion section 14 is inserted, are arranged.

To the embodiment described above, which has the spring element 22, it should be noted that the stop / stop face is realized by means of a defined block length of the spring element 22. That is, the spring element 22 can be compressed only to a certain extent, so that the gas container 1 'and the Aufstecheinheit 13 can not be moved closer to each other, since the gas container 1' abuts with the sealing and guiding element 5 against the force transmission element 23.

• Einsetzen des mittels des Dicht- und Führungselements 5 verschlossenen Basiskörperkopfs 2 des Basiskörpers 1 des Gasbehälters 1' in den Einführabschnitt 14 der Aufstecheinheit 13;
• Herbeiführen einer zueinander gerichteten Relativbewegung zwischen dem Gasbehälter 1' und der in der Aufstecheinheit 13 angeordneten Aufstechlanze 15, sodass die Aufstechlanze 15 durch die Öffnung 9 in den Hohlraum 7 ragt, wobei mittels der Dichtfläche 18 der Aufstechlanze 15 und der innerhalb des Hohlraumes 7 angeordneten Dichtung 12 eine gasdichte Verbindung hergestellt wird;
• Weiterbewegen des Gasbehälters 1' in Richtung Aufstechlanze 15 bzw. in Richtung der an der Aufstechlanze 15 angeordneten Aufstechspitze 16, sodass die Verschlussfläche 10 des Dicht- und Führungselements 5 durchstochen wird und das Gas 4 aus dem Gasbehälter 1' bzw. aus dessen innerem Volumen durch den in der Aufstechlanze 15 und der Aufstechspitze 16 angeordneten Gasströmungskanal 17 ausströmen kann.

The process sequence associated with the gas supply system according to the invention essentially comprises the following steps:

• Inserting the base body head 2 of the base body 1 of the gas container 1 'closed by means of the sealing and guiding element 5 into the insertion section 14 of the piercing unit 13;
• Inducing a mutually directed relative movement between the gas container 1 'and arranged in the Aufstecheinheit 13 Aufstechlanze 15 so that the Aufstechlanze 15 protrudes through the opening 9 in the cavity 7, wherein by means of the sealing surface 18 of the piercing lance 15 and disposed within the cavity 7 seal 12 is made a gas-tight connection;
• Moving the gas container 1 'in the direction of Aufstechlanze 15 or in the direction of the Aufstechlanze 15 Aufstechspitze 16 so that the closure surface 10 of the sealing and guiding element 5 is pierced and the gas 4 from the gas container 1' or from the inner volume through the gas flow channel 17 arranged in the piercing lance 15 and the piercing tip 16 can flow out.

LIST OF REFERENCE NUMBERS

1'

gas tank

1

base body

2

Base body head

3

face

4

gas

5

Sealing and guiding element

6

Section of the sealing and guiding element

7

cavity

8th

connecting portion

8a

welded joint

8b

screw

8c

press connection

9

opening

10

closure surface

11

Puncture area with weakened wall thickness

12

poetry

13

piercing unit

14

insertion

15

Aufstechlanze

16

piercer

17

Gas flow channel

18

sealing surface

19

receiving element

20

fastener

21

guide

22

spring element

23

Power transmission element

24

Another cavity

Claims (11)

1. A system for providing gas (4), the system comprising a gas container (1') having an inner volume for accommodating gas (4), the gas container (1') comprising a base body (1) having a base body head (2), wherein the base body (1) at least sectionally forms the inner volume and is closed leak-tight, preferably in the region of the base body head (2), the gas container (1') furthermore comprising a sealing and guiding element (5), which has a cavity (7) for accommodating a piercing lance (15) and an opening (9), which is arranged on a side of the sealing and guiding element (5) facing away from the base body (1) and is provided for inserting the piercing lance (15) into the cavity (7), wherein a seal (12) is arranged in the cavity (7) in order to be brought into leak-tight engagement with a sealing surface (18) arranged on the piercing lance (15), the system furthermore comprising a piercing unit (13) for opening the gas container (1'), wherein the piercing unit comprises a receptacle element (19) for accommodating at least one section of the sealing and guiding element (5) and the piercing lance (15), and also a fastening element (29), on which the receptacle element (19) is arranged, wherein furthermore the piercing unit (13) comprises a spring element (22), wherein the piercing unit (13), in particular the spring element (22), is designed such that a force assistance during pulling out or an automatic sliding out of the piercing lance (15), in particular the piercing tip (16), which is arranged in the sealing and guiding element (5), is ensured after the opening of the gas container (1'),
   characterized in that the sealing and guiding element (5) is at least sectionally arranged inside the base body head (2) and is fixedly connected thereto, the piercing unit (13) comprises a force transmission element (23), on which the sealing and guiding element (5) arranged on the base body head (2) is arranged during the opening of the gas container (1'), and preferably a guide (21) for the spring element (22), the force transmission element (23) is designed as a guide for the spring element (22), either the force transmission element (23) is ring-shaped and has a U-shaped or L-shaped cross sectional profile or the force transmission element (23) is disk-shaped, and the gas container (1') and the piercing unit (13) are movable in relation to one another to open the gas container (1').
2. The system according to Claim 1, characterized in that the sealing and guiding element (5) closes the base body (1) leak-tight.
3. The system according to any one of Claims 1 to 2, characterized in that the cavity (7) for accommodating the seal (12) at least sectionally has a grooved cross section.
4. The system according to any one of Claims 1 to 3, characterized in that the sealing and guiding element (5) comprises a connecting section (8), which protrudes through an open end face (3) of the base body (1) into the base body head (2).
5. The system according to Claim 4, characterized in that the sealing and guiding element (5) has an essentially T-shaped cross section, wherein the connecting section (8) has a cross section, the shape of which forms the longitudinal bar of the T-shaped cross section.
6. The system according to any one of Claims 4 to 5 and according to Claim 2, characterized in that the leak-tight closure of the base body (1) by the sealing and guiding element (5) is formed by a leak-tight connection of the sealing and guiding element (5) to the base body (1) in the region of the connecting section (8), on the one hand, and the base body head (2), on the other hand, and/or by a leak-tight connection of the sealing and guiding element (5) to the base body (1) in the region of the end face (3) of the base body (1).
7. The system according to any one of Claims 1 to 6, characterized in that the sealing and guiding element (5) has a closure surface (10), which is arranged opposite to the opening (9), preferably on the connecting section (8), wherein the closure surface (10) has a piercing region (11) having a weakened wall thickness of 0.1 mm to 1.0 mm, preferably 0.2 mm to 0.3 mm, to be able to be pierced by means of the piercing lance (15).
8. The system according to Claim 7, characterized in that the closure surface (10) is formed flat or curved or conical.
9. The system according to any one of Claims 1 to 8, characterized in that the piercing lance (15) has a piercing tip (16), to pierce the closure surface (10), wherein the piercing tip preferably has a greater hardness than the remaining piercing lance (15).
10. The system according to any one of Claims 1 to 9, characterized in that the piercing lance (15), and preferably also the piercing tip (16), has a gas flow channel (17), to let gas flow out of the gas container (1') in the pierced state.
11. The system according to any one of Claims 1 to 10, characterized in that the piercing lance (15) is formed as cylindrical or conical.

Images