AT17447U1 - DEVICE FOR GENERATION, STORAGE AND DISPENSING CREAMY EMULSIFYABLE FLUIDS - Google Patents

Abstract

Device (1) for producing, storing and dispensing creamy, emulsifiable fluids, comprising: a container (2) with a base (3), an opening (4) and an interior space (5) for receiving a dispensing medium (22); a closure (6) for closing the opening, the closure having an inlet section (7) with an inlet valve (8) for introducing a gas (18) into the container and a dispensing opening (9) which can be closed with the aid of an actuatable dispensing valve (10) for discharging the discharge medium; and a gas container holder (19) for receiving an exchangeable gas container (15) filled with the gas, wherein the gas container can be arranged on the inlet section. According to the invention it is provided that the interior has such a total volume that with a fluidic connection of the gas tank with the container with a filling volume of the discharge medium of 500 cm³ to 532 cm³ a ratio of the pressure of the gas in a residual volume of the total volume to the residual volume of 21 bar / 140 cm³ to 26 bar / 108 cm³ at room temperature is guaranteed.

Description

description

DEVICE FOR GENERATION, STORAGE AND DISPENSING CREAMY, EMULSABLE FLUIDS

FIELD OF THE INVENTION

The present invention relates to a device for producing, storing and dispensing creamy, emulsifiable fluids, in particular whipped cream, comprising: a container with a bottom, an opening and an interior space for receiving a discharge medium; a closure which is designed to close the opening, the closure having an inlet section with an inlet valve for introducing a gas into the container and a discharge opening which can be closed with the aid of an actuatable discharge valve for discharging the discharge medium; and a gas container holder, which is designed to accommodate an exchangeable gas container filled with the gas, wherein the gas container can be arranged on the inlet section of the closure.

STATE OF THE ART

[0002] AT 411 171 B discloses an essentially bottle-shaped container with an opening which can be closed with a lid, the lid having an inlet opening for introducing gas, preferably nitrous oxide (N2O), into the container and one by means of a valve has closable output opening. In detail, the introduction of the gas by means of a gas container, the membrane closure of which can be pierced with a piercing unit arranged at the inlet opening, increases the pressure in the container to approx. 6 bar to 30 bar, as a result of which gas molecules diffuse into emulsifiable molecules of a fluid arranged in the container, to expand again when expanding to an ambient pressure and convert the fluid into a creamy or foamy or sauce-like state.

The disadvantage here is that using a simple, almost standardized gas capsule that is commercially available in the cream siphon segment as a gas container with a typical filling weight of 8.4 g N2O0 (nitrous oxide) and a typical pressure of 40 bar to 80 bar at room temperature does not produce a sufficiently high pressure for optimal foaming can be achieved with a standard container with a filling volume of 1 liter, which results in a lower yield and thus a lower degree of efficiency. But even smaller standard containers with a filling volume of 0.5 liters do not deliver optimal results, since good foaming and thus particularly good cream quality are achieved, but the yield is due to the small amount of gas available in the container for dispensing stands, is low.

A low efficiency or a low yield is not only disadvantageous from an economic point of view, but also with regard to the environment, since nitrous oxide in particular contributes to the greenhouse effect and thus to climate problems if it escapes unused into the environment.

OBJECT OF THE INVENTION

It is therefore an object of the invention to provide a generic device which avoids the disadvantages mentioned above and with which a higher yield and thus a higher efficiency can be achieved.

PRESENTATION OF THE INVENTION

[0006] To solve this problem, a device for producing, storing and dispensing creamy, emulsifiable fluids, in particular whipped cream, is required, comprising: a container with a base, an opening and an interior space for receiving a discharge medium; a closure which is designed to close the opening, where

the closure has an inlet section with an inlet valve for introducing a gas into the container and a dispensing opening, which can be closed with the aid of an actuatable dispensing valve, for discharging the dispensing medium; as well as a gas container holder, which is designed to hold an exchangeable gas container filled with the gas, wherein the gas container can be arranged on the inlet section of the closure, provided according to the invention that the interior of the container has such a total volume that when there is a fluidic connection of the gas container with the Container with a filling volume of the discharge medium of 500 cm? up to 532 cm? a ratio of the pressure of the gas in a residual volume of the total volume to the residual volume of 21 bar / 140 cm? up to 26 bar / 108 cm ® , preferably 23.5 bar / 124 cm ® , is guaranteed at room temperature.

It turns out that with such a volumetric design of the container or the interior with a filling volume of the discharge medium of 500 cm ® to 532 cm? a pressure-residual volume ratio is given, so that the efficiency and thus the yield is increased by approx. 10% compared to the standard designs explained at the beginning. In this case, the volumetric design of the device or the container is designed for the gas tanks mentioned at the outset. The latter are more or less standardized, so that the quantity and pressure of the gas in the respective container (typically nitrous oxide) varies only relatively slightly in practice, typically around 8.4 g (e.g. by approx. 10% or from 7.5 g up to 9.3 g) and around 60 bar (e.g. from 40 bar to 80 bar at room temperature). The specified pressure-residual-volume ratio ranges are clearly achieved or ensured when a gas-filled gas container is (was) brought into fluidic connection with the container or the interior space in which the specified filling volume of discharge medium is arranged.

The remaining volume could also be referred to as "gas volume" because this volume is available for the gas in the container. Accordingly, the sum of the filling volume and the remaining volume results in the total volume.

The fluid connection between the gas tank and the container is to be understood in particular as a fluid connection between the gas tank and the interior.

In a preferred embodiment, a piercing unit is provided for piercing a gas container membrane arranged on the gas container in order to ensure a fluidic connection between the gas container and the container via the inlet section. A fluidic connection between the device and the gas container is thus ensured by the piercing unit when the gas container is accommodated and held in the gas container holder and this is arranged on the closure. This includes the creation of said fluidic connection by piercing the gas container in an area of the gas container provided for this purpose, which can in particular be designed as a gas container membrane.

The gas tank is usually made of metal. Accordingly, the gas container membrane is preferably designed as a metal membrane.

In a further preferred embodiment, a valve actuating unit is provided for actuating a gas container valve arranged on the gas container in order to ensure a fluidic connection between the gas container and the container via the inlet section. Such an embodiment is necessary in particular when the gas container does not have a membrane as a closure, but rather a gas container valve which, depending on the requirements, is designed to be resealable or not resealable. Such gas containers are known per se and are commercially available.

The inlet valve is preferably a pressure relief valve. The pressure relief valve serves to limit the pressure inside the container, i.e. the term pressure relief valve is to be understood functionally. Limiting the pressure in the interior is for safety, so that the pressure in the interior cannot damage or even cause the container or the device to burst.

[0014] In order to enable the most space-saving design possible for the pressure-limiting valve

chen, in a preferred embodiment of the device according to the invention it is provided that the pressure-limiting valve has a piston with a first and a second active area, wherein the first active area can be acted upon by a first gas pressure that prevails in the gas tank when the gas tank is in fluidic connection with the pressure relief valve, and wherein the second effective surface can be acted upon by a second gas pressure which prevails in the interior of the device when the pressure relief valve is in fluid communication with the interior, the pressure relief valve being in an open state as long as a first product of the first gas pressure and the first effective area is greater than or equal to a second product of the second gas pressure and the second effective area, and a closed state as long as the first product is less than or equal to the second product.

The first gas pressure is therefore caused by the gas which - when the gas container is fluidly connected to the device, in particular to the first active surface - can flow from the gas container into the pressure relief valve to the first active surface, with the first gas pressure being the closed pressure relief valve prevails in the entire area of the flow path between the first effective surface and the gas container or the inner volume of the gas container or the gas of the gas container. The second gas pressure prevails - when the interior of the container is fluidically connected to the pressure-limiting valve, in particular to the second active surface, with this fluidic connection being established automatically when the container is closed - when the pressure-limiting valve is closed correspondingly in the interior and in the entire area of the flow path between the second effective surface and the interior. The pressure relief valve thus sets the second gas pressure in the interior of the device.

Not least because of unavoidable friction, the state of the pressure relief valve does not generally change from open to closed or vice versa when the first product of the first gas pressure, which can also be referred to as "inlet pressure", and the first effective area and the second product of the second gas pressure, which can also be referred to as "initial pressure", and the second effective area are exactly the same.

In a particularly preferred embodiment of the device according to the invention, which is particularly favorable in terms of production technology, it is provided that a piston is arranged so that it can move linearly within the pressure-limiting valve, the piston being arranged at a distance from a sealing cone formed by a stop element when the pressure-limiting valve is in an open state and wherein in a closed state of the pressure relief valve a sealing surface of the piston rests tightly against the sealing cone. The piston, which can also be referred to as the “pressure-limiting valve piston”, can be moved along a line, preferably a straight line.

Here, the stop element preferably has a groove with a sealing element, preferably an O-ring, for sealing the first effective surface (14) of the piston. I.e. the sealing element, in particular the O-ring, of the stop element thus defines the first effective surface or a first "sealing diameter", whereby the sealing element can in particular bear against an inner side or inner surface of the piston in order to create a seal or gas-tight connection between the stop element and the piston to form pistons.

Furthermore, the piston preferably has a groove with a sealing element, preferably an O-ring, for sealing the second effective surface. I.e. the sealing element, in particular the O-ring, of the piston thus defines the second effective surface or a second "sealing diameter", whereby the sealing element can in particular bear against an inner side or inner surface of a carrier element in order to create a seal or gas-tight connection between the piston and the piston to form the carrier element. On the one hand, the support element is used to attach the pressure-limiting valve in the inlet section. On the other hand, the stop element can be fastened in the carrier element.

It has been shown that the pressure-limiting valve can also contribute to optimizing the efficiency or the yield beyond the mere limitation of the second gas pressure in the interior. For this purpose it is in a particularly preferred embodiment of the invention

according device provided that the second effective surface of the piston and the first effective surface of the piston in the area ratio of 1.5 to 1.6 to 1, preferably 1.55 to 1, are formed. Overall, an improvement in efficiency or yield of up to 12% can be achieved.

Since the second active area is larger than the first active area, it is also ensured that the maximum pressure (maximum second gas pressure) in the container or interior does not exceed a specific limit value, e.g. 40 bar, even if a larger (first ) gas pressure prevails.

In order to prevent contamination of the pressure-limiting valve piston, e.g. by the discharge medium, from a direction opposite to the gas flow direction, it is provided in a preferred embodiment of the device according to the invention that the pressure-limiting valve comprises a check valve.

A relatively high pressure can arise in the interior space or the second gas pressure can be relatively high. On the one hand, this can be provided, i.e. the pressure relief valve and the gas tank can be adjusted accordingly, e.g. to be able to prepare certain desired meals / foamy drinks. On the other hand, a relatively high pressure can also arise unintentionally if the user fills too much discharge medium into the container or into the interior, for example beyond a boundary line in the interior. There is then less space available for the gas, which is used to pressurize the discharge medium, and the pressure in the interior is correspondingly higher than in normal operation. In order to ensure the above gas pressure/residual volume ratio over a certain range, a preferred embodiment of the device according to the invention provides for the total volume of the container to be from 620 cm ® to 660 cm ® , preferably 640 cm ® .

In order to ensure the mechanical integrity of the device or the container and thus the safety of the user with a certain safety margin at the relatively high pressures in the interior that prevail during operation, it is provided in a preferred embodiment of the device according to the invention that the container bottle-like and made of metal, preferably stainless steel, wherein the container has a wall thickness of 0.5 mm to 3 mm, preferably 0.8 mm to 1.5 mm.

Alternatively or additionally, it can be provided that the bottom which delimits the interior of the container in sections is curved inwards in the manner of a champagne bottle. If the pressure is too high, the bottom can bulge outwards to prevent the container from bursting.

A combination of these features that contribute to security allows not only optimal security but also particularly cost-effective production, the container being able to be made of steel in particular and the base protruding into the interior of the device due to the champagne bottle-like curvature.

In order to ensure a secure connection of the closure to the container even at high pressures, it is provided in a preferred embodiment of the device according to the invention that a screw connection or a sleeve connection or a bayonet connection is provided for fastening the closure to the container.

In a preferred embodiment of the device according to the invention it is provided that the dispensing valve can be actuated by means of a lever-like actuating element or a push button in order to discharge the discharge medium mixed with gas or acted upon from the interior.

According to the above explanations, a system is provided according to the invention, in particular for the preparation of "whipped cream", comprising a device according to the invention and the gas container filled with gas, the gas preferably being nitrous oxide (N2O). The specification of nitrous oxide as the preferred gas should of course be understood to mean that

possible unavoidable or negligible impurities are included herein. The present invention is not limited to nitrous oxide as the gas.

In a preferred embodiment of the system according to the invention it is provided that the gas in the gas tank has a pressure of 40 bar to 80 bar, preferably 60 bar, at room temperature. This applies in particular when the gas container is in a closed state.

The gas container is usually separated from the device after the container has been filled with gas and the device has been shaken, as recommended. After all the discharge medium has been discharged, the container will be opened in practice in order to wash it and, if necessary, to fill in a new desired fluid/discharge medium.

BRIEF DESCRIPTION OF THE FIGURES

The invention will now be explained in more detail using an exemplary embodiment. The figures are exemplary and are intended to explain the idea of the invention, but in no way restrict or even conclusively reproduce it. Further advantageous configurations, details and developments of the invention can also be gathered from the figures. It shows:

1 shows a sectional view of a system according to the invention with a device according to the invention with an associated gas container for producing, storing and dispensing creamy, emulsifiable fluids, in particular whipped cream.

[0035] FIG. 2 shows an enlarged view of detail A from FIG. 1.

WAYS TO CARRY OUT THE INVENTION

Fig. 1 shows a sectional view of a system according to the invention with a device 1 according to the invention and with a gas container 15 filled with gas 18, the gas 18 preferably being nitrous oxide (N20O), for generating, storing and dispensing creamy, emulsifiable fluids, especially whipped cream. The device 1 comprises a container 2 with a base 3, an opening 4 and an interior space 5 for receiving a discharge medium 22.

Furthermore, the device 1 comprises a closure 6, which is designed to close the opening 4, the closure 6 having an inlet section 7 with an inlet valve 8 for introducing a gas 18 into the container 2 and with the aid of an actuatable dispensing valve 10 Has output opening 9 for discharging the discharge medium 22. During use, the device 1 is turned upside down, i.e. with the dispensing opening 9 pointing downwards or in the direction of gravity.

The device 1 also includes a gas container holder 19 which is designed to accommodate an exchangeable gas container 15 filled with the gas 18 , the gas container 15 being able to be arranged on the inlet section 7 of the closure 6 .

In order to increase the efficiency or the yield, it is provided according to the invention that the interior 5 of the container 2 has such a total volume that with a fluidic connection of the gas container 15 with the container 2 with a filling volume of the discharge medium 22 of 500 cm® to 532 cm® a ratio of the pressure of the gas 18 in a residual volume of the total volume to the residual volume of 21 bar/cm? up to 26 bar/cm®, preferably 23.5 bar/cm®, is guaranteed at room temperature.

[0040] Room temperature is a temperature range from 18° C. to 25° C., preferably from 20° C. to 23° C., which is a temperature variable composed of a local air temperature and radiation temperatures of individual surrounding areas. The discharge medium 22 to be foamed or gassed should have a temperature of 2° C. to 8° C., preferably 5° C.

The sum of the remaining volume and the filling volume gives the total volume.

The total volume of 620 cm? up to 660 cm ® , more preferably 640 cm ® in size.

The gas in the gas container 15 preferably has a pressure of 40 bar to 80 bar, particularly preferably 60 bar, at room temperature.

The inlet section 7 additionally comprises a piercing unit 13 for piercing a gas tank membrane 16 arranged on the gas tank 15 in order to enable a fluidic connection between the gas tank 15 and the container 2 via the inlet section 7 .

Seen in a gas flow direction 30, a pressure relief valve DBV is arranged as an inlet valve 8 in the illustrated exemplary embodiment after the piercing unit 13, the structure of which can be seen clearly in the enlarged representation of detail A in FIG. This pressure relief valve DBV is shown in the closed state in Fig. 1 and Fig. 2, i.e. the gas 18 cannot or does not flow out of the gas tank 15 along a flow path into the interior space 5.

In the embodiment shown, the pressure relief valve DBV works on the principle of a differential piston. Here, the pressure-limiting valve DBV has a piston 33 with a first effective surface 14 and a second effective surface 17 . The first active surface 14 can be acted upon or is acted upon by a first gas pressure, the first gas pressure prevailing in the gas tank 15 when the gas tank 15 is in fluid communication with the device 1 and thus with the pressure-limiting valve DBV. The second active surface 17 can be acted upon or is acted upon by a second gas pressure, the second gas pressure prevailing in the interior space 5 when the pressure-limiting valve DBV is in fluid communication with the interior space 5 . The second gas pressure can also be referred to as the device internal pressure. The pressure relief valve DBV is designed such that the pressure relief valve DBV is in an open state as long as a first product of the first gas pressure and the first effective area 14 is greater than or equal to a second product of the second gas pressure and the second effective area 17 . As soon as the first product is smaller than the second product, the pressure-limiting valve DBV closes, in that the piston 33 is displaced in the opposite direction to the gas flow direction 30 in the direction of the gas container 15 . The pressure relief valve DBV is then in the closed state as long as the first product is less than or equal to the second product.

The piston 33 is thus arranged to be linearly movable within the pressure relief valve DBV, more precisely within a carrier element 32, with which the pressure relief valve DBV is connected to the closure 6 and to which the gas container holder 19 is attached, with the piston 33 being in the open state of the pressure relief valve DBV is arranged at a distance from a sealing cone 37 formed by a stop element 12 and a sealing surface 38 of the piston 33 rests tightly against the sealing cone 37 in the closed state.

The stop element 12 is fastened in the carrier element 32 in the exemplary embodiment shown.

[0049] The stop element 12 has a groove with a sealing element 39, which is an O-ring in the exemplary embodiment shown, for sealing off the first effective surface 14. The sealing element 39 thus defines the first effective surface 14 or a first “sealing diameter”, with the sealing element 39 bearing against an inside or inner surface of the piston 33 in the exemplary embodiment shown, in order to form a seal or gas-tight connection between the stop element 12 and the piston 33 .

The piston 33 has a groove with a sealing element 35, which is an O-ring in the illustrated embodiment, for sealing the second effective surface 17. The sealing element 35 thus defines the second effective surface 17 or a second "sealing diameter", whereby in the illustrated embodiment the sealing element 35 bears against an inner side or inner surface of the carrier element 32 in order to create a seal or gas-tight connection between the piston 33 and

Support element 32 to form.

To optimize the efficiency, the second effective surface 17 of the piston 33 and the first effective surface 14 of the piston 33 are designed with an area ratio of 1.5:1 to 1.6:1, preferably 1.55:1.

Because of the friction that is unavoidable in practice, there is no change in the state of the pressure-limiting valve DBV if the first product is mathematically exactly the same as the second product. However, minor deviations from this equality can lead to a change in status.

In the embodiment shown, the closure 6 has an internal thread of the type TR50x3 in order to be screwed to an external thread 26 of the type TR50x3 arranged on the container 2 in the area of an opening 4 and thus to close the container 2, cf. Fig 1. When used as intended, a head seal 28 with a removal tab 29 is arranged between the closure 6 and the container 2 . It should be noted here that, in addition to a screw connection, other types of connection, such as a sleeve connection or a bayonet connection, are also conceivable.

Typically, the preparation of a "whipped cream" requires a second gas pressure in the interior 5 of about 15 bar, after a shaking process it is about 8 bar. However, if used incorrectly, the second pressure can also be significantly higher, particularly if the user fills too much discharge medium 22 into the container 2 or into the interior 5, for example beyond a boundary line in the interior 5. In order to ensure the mechanical integrity of the device 1 or the container 2 and thus the safety of the user in such cases, the embodiment shown in the figures has the following optimal combination of individual security features: the container 2 is bottle-like and preferably made of metal stainless steel, and has a wall thickness in the range of 0.5mm to 3mm, preferably 0.8mm to 1.5mm; The container 2 has a bottom 3 that delimits sections of the interior 5, which bottom 3 is curved inwards like a champagne bottle. This floor 3 bulges out when the second pressure in the container 2 is too high and thus prevents the container 2 from suddenly bursting, as a result of which serious injuries to the user can be avoided in the event of improper use.

Furthermore, to ensure greater security when gripping or handling the device 1, the closure 6 comprises a head cover 27, preferably based on silicone or plastic, on the jacket side in the connection area with the container 2.

In the exemplary embodiment shown, the gas container holder 19 is surrounded on the lateral surface by a gas capsule holder cover 20 which is preferably based on silicone or plastic. The replaceable gas container 15 is arranged in the gas container holder 19 when the device 1 is used as intended. When arranging, preferably screwing, the gas container holder 19 on the carrier element 32 , a sealing surface of the gas container 15 , preferably designed in the form of a cap, is pierced by means of the piercing unit 13 . In the exemplary embodiment shown, the closure surface is a gas container membrane 16. When puncturing, there is a relative movement between the gas container 15, which is closed by means of the closure surface, and the puncturing unit 13, with the gas container 15 being parallel to the longitudinal axis 40 of the puncturing unit 13, in particular when it is screwed on, in the direction of the puncturing unit 13 is moved so that the closure surface is pierced. After piercing, gas can escape from the gas container 15 and flow into the interior 5, where the gas can mix with the discharge medium 22, wherein mixing of the gas 18 with the discharge medium 22 can be promoted by shaking the device 1. I.e. a fluidic connection between the gas container 15 and the device 1 is established by the piercing.

The carrier element 32 arranged on the closure 6 has a sealing element 36 to prevent any gas leaks.

The gas container holder 19 preferably has an internal thread with a thread size

from M22x2.0 to.

It should be noted that other forms of connection are conceivable for those skilled in the art in addition to tightening, for example simply firmly attaching the gas container holder 19 or a cuff fastener or a bayonet fastener. It is also possible for said relative movement to be carried out essentially by the piercing unit 13 itself, for example with the aid of a spring element. On the other hand, it is also possible for the gas container 15 and the piercing unit 13 to be moved synchronously towards one another, as a result of which the sealing surface can also be pierced.

In the exemplary embodiment shown, the dispensing opening 9 is arranged in a removal plunger 24 . Through the dispensing opening 9 or through an exchangeable dispensing nozzle 21 (also referred to as a spout) which is fluidically connected to the dispensing opening 9, the dispensing medium 22 to which gas 18 has been added or acted upon is conveyed when the device 1 is actuated by means of a lever-like spring element 25 prestressed Actuating element 11 discharged from the interior 5. In order to ensure this, the actuating element 11 is connected to the closure 6 by means of an axis pin 23 guided in a pin guide, the actuating element 11 being pivotable about a pin axis. When the actuating element 11 is actuated, it is pivoted, the spring element 25 is compressed and the dispensing opening 9 is opened. In detail, the removal plunger 24 is pressed into the closure 6 of the device 1 by actuating the actuating element 11 in such a way that a first sealing element 41 of the removal plunger 24 is opened and a fluidic connection from the interior space 5 to the discharge nozzle 21 is ensured.

It would also be possible that, instead of the spring element 25, a buffer which can be compressed under pressure and which expands again in the unloaded state is used in the form of a rubber or caoutchouc element. This buffer is used in the same way as the spring element 25 to close the extraction piston 24.

In an alternative embodiment, the actuating element 11 can also be designed like a button in the form of a push button.

It can be seen in FIG. 2 that the pressure-limiting valve DBV includes a check valve 34 in addition to the piston 33 and the stop element 12 . As stated, the piston 33 arranged in the stop element 12 serves to limit the pressure in the interior space 5, this pressure being generated essentially by the gas 18 flowing from the gas container 15 into the interior space 5. The gas tank 15 can remain arranged on the device 1 during the entire application until an almost empty state is reached, the gas tank 15 acting in combination with the pressure relief valve DBV as a gas reservoir.

With the help of the check valve 34, the flow of the gas 18 flowing out of the gas container 15 is only possible in one direction, namely into the interior space 5. A flow of gas 18 and/or discharge medium 22 from the interior 5 into the pressure relief valve DBV is thus prevented. In this way, the non-return valve 34 supports the function of the gas container 15 as a gas reservoir. In addition, in particular contamination of the pressure-limiting valve DBV or of the piston 33 by the discharge medium 22 is prevented.

Furthermore, an ejection plate 31 is provided, which serves to prevent the sealing surface of the gas container 15 from getting stuck on the puncturing unit 13 . That is, the ejection plate 31 facilitates the removal of the emptied gas container 15 from the device 1.

A fixing element 42 for fixing the stop element 12 in the carrier element 32 is also arranged, with the fixing element 42 preferably being screwed to the carrier element 32 .

REFERENCE LIST

1 fixture;

2 container;

3 floor;

4 opening;

5 interior;

6 clasp;

7 inlet section; 8 intake valve;

9 dispensing opening;

10 dispensing valve;

11 actuator; 12 stopper;

13 piercing unit;

14 first effective surface;

15 gas tanks;

16 gas container membrane; 17 second effective surface;

18 gas;

19 gas tank holder;

20 gas tank holder cover; 21 discharge nozzle;

22 discharge medium;

23 axis pin;

24 sampling flask;

25 spring element;

26 external thread;

27 head cover;

28 head gasket;

29 head gasket removal tab 28; 30 gas flow direction; 31 ejection plate;

32 carrier element;

33 pistons;

34 check valve;

35 sealing element of the piston 33;

36 sealing element of the carrier element 32; 37 sealing cone of the stop element 12; 38 sealing surface of the piston 33;

39 sealing element of the stop element 12; 40 longitudinal axis of the piercing unit 13;

41 sealing element of the extraction piston 24; 42 fixing element;

DBV pressure relief valve

Claims (16)

Expectations 1. Device (1) for producing, storing and dispensing creamy, emulsifiable fluids, in particular whipped cream, comprising: - A container (2) with a bottom (3), an opening (4) and an interior space (5) for receiving a discharge medium (22); - A closure (6) which is designed to close the opening (4), the closure (6) having an inlet section (7) with an inlet valve (8) for introducing a gas (18) into the container (2) and a has a dispensing opening (9) which can be closed with the aid of a dispensing valve (10) for dispensing the dispensing medium (22); such as - a gas container holder (19) which is designed to accommodate an exchangeable gas container (15) filled with the gas (18), the gas container (15) being able to be arranged on the inlet section (7) of the closure (6), characterized in that the interior (5) of the container (2) has such a total volume that with a fluidic connection of the gas container (15) to the container (2) with a filling volume of the discharge medium (22) of 500 cm® to 532 cm*® the pressure of the gas (18) is ensured in a residual volume of the total volume to the residual volume of 21 bar/140 cm ® to 26 bar/108 cm ®, preferably 23.5 bar/124 cm ®, at room temperature and that the base (3) delimiting sections of the interior (5) of the container (2) is curved inwards like a champagne bottle. 2. Device according to claim 1, characterized in that a piercing unit (13) is provided for piercing a gas container membrane (16) arranged on the gas container (15) in order to establish a fluidic connection between the gas container (15) and the container (2). to ensure the inlet section (7). 3. Device according to claim 1, characterized in that a valve actuating unit is provided for actuating a gas container valve arranged on the gas container (15) in order to establish a fluidic connection between the gas container (15) and the container (2) via the inlet section (7). guarantee. 4. Device (1) according to any one of claims 1 to 3, characterized in that the inlet valve (8) is a pressure relief valve (DBV). 5. The device according to claim 4, characterized in that the pressure relief valve (DBV) has a piston (33) with a first (14) and a second active surface (17), the first active surface (14) being acted upon by a first gas pressure, which prevails in the gas tank (15) when the gas tank (15) is fluidically connected to the pressure relief valve (DBV), and wherein the second effective surface (17) can be subjected to a second gas pressure which prevails in the interior (5) when the pressure relief valve (DBV) is in fluid communication with the interior (5), the pressure relief valve (DBV) being in an open state as long as a first product of the first gas pressure and the first effective area (14) is greater than or equal to a second product of the second gas pressure and the second active surface (17), and a closed state as long as the first product is less than or equal to the second product. 6. Device (1) according to claim 4 or 5, characterized in that a piston (33) within the pressure relief valve (DBV) is arranged linearly movable, wherein the piston (33) in an open state of the pressure relief valve (DBV) by a a stop element (12) formed sealing cone (37) is arranged spaced and wherein in a closed state of the pressure relief valve (DBV) a sealing surface (38) of the piston (33) bears tightly on the sealing cone (37). 7. Device (1) according to claim 6 and according to claim 5, characterized in that the stop element (12) has a groove with a sealing element (39), preferably an O-ring, for sealing the first active surface (14) of the piston (33 ) having. 8. Device (1) according to claim 6 or 7 and according to claim 5, characterized in that the piston (33) has a groove with a sealing element (35), preferably an O-ring, for sealing the second active surface (17) of the piston (33). 9. Device (1) according to one of claims 5 to 8 and according to claim 5, characterized in that the second effective surface (17) of the piston (33) and the first effective surface (14) of the piston (33) have an area ratio of 1, 5 to 1 to 1.6 to 1, preferably 1.55 to 1. 10. Device (1) according to any one of claims 4 to 9, characterized in that the pressure relief valve (DBV) comprises a check valve (34). 11. Device (1) according to one of the preceding claims, characterized in that the container (2) is bottle-like and made of metal, preferably stainless steel, wherein the container (2) has a wall thickness of 0.5 mm to 3 mm, preferably from 0.8 mm to 1.5 mm. 12. Device (1) according to one of the preceding claims, characterized in that the total volume of the container (2) is from 620 cm ® to 660 cm ® , preferably 640 cm ® . 13. Device (1) according to any one of the preceding claims, characterized in that a screw connection (26) or a sleeve closure or a bayonet closure is provided for fastening the closure (6) to the container (2). 14. Device (1) according to one of the preceding claims, characterized in that the dispensing valve (10) can be actuated by means of a lever-like actuating element (11) or a push button. 15. System comprising a device (1) according to one of Claims 1 to 14 and the gas container (15) filled with gas (18), the gas (18) preferably being nitrous oxide (N2O). 16. System according to claim 15, characterized in that the gas (18) in the gas container (15) has a pressure of 40 bar to 80 bar, preferably 60 bar, at room temperature. 2 sheets of drawings