Co2 gas supply by aquarium pressurized gas container including nutrient substrate

Abstract

To provide a water tank pressurized gas container for supplying generated CO2 gas to a water tank.SOLUTION: There is provided an aquarium pressurized gas container 10 for supplying CO2 gas generated in the aquarium pressurized gas container 10 to an aquarium 12, comprising: a receiving vessel 14 having receiving volume for receiving a mixture for fermentation, the mixture comprising mixed water, a nutrient substrate and a reactant for interacting with the nutrient substrate, wherein the nutrient substrate and the reactant react with each other to produce CO2 gas; closing means 16 for closing the receiving vessel 14 in a gastight manner; a gas outflow device 18 for, in particular interruptible, CO2 gas extraction from the aquarium pressurized gas container 10 for the aquarium 12, wherein the CO2 gas has a gas feed pressure p_B when entering the gas outflow device 18 ; and a gas container pressure regulator 20 configured to regulate a gas container pressure p_G such that it substantially corresponds to the gas supply pressure p_B. Further there is provided a CO2 gas supply system 28 including the aquarium pressurized gas container 10.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an aquarium pressurized gas container for supplying an aquarium with CO2 gas produced therein.

[0002] Furthermore, the present invention relates to a CO2 gas supply system including the above-mentioned water tank pressurized gas container. [Background technology]

[0003] For the supply of oxygen to fish, the adequate planting of the aquarium is of great importance. For this purpose, plants need carbon dioxide, CO2, which is the basis of oxygen. CO2 gas is usually used in fish farming to feed the plants and to regulate the pH value. In this process, gaseous CO2 is dissolved in the aquarium and becomes available to the plants for photosynthesis or cell construction. To regulate the pH value, gaseous CO2 is also dissolved in the water, with the result that the pH value of the water decreases.

[0004] In principle, gaseous CO2 can be added to the water in a metered manner via measurement and control electronics. For this purpose, two different methods of supplying CO2 gas have been used in fish farming for decades:

[0005] On the one hand, CO2 gas is supplied by a CO2 pressure cartridge, and the cartridge pressure is reduced by a pressure reducer to a level equivalent to the CO2 gas pressure so that the aquarium can be supplied with CO2 having the gas supply pressure without further complications.

[0006] The supply of CO2 gas is generally stopped at night, since without light entering the aquarium the photosynthetic process of the plants placed therein would cease. This is usually done with a CO2 pressure cartridge, by cutting off the gas flow in the pipeline and therefore the supply of CO2 gas. This cutoff can be done, for example, by a solenoid valve.

[0007] The same technique is used for pH regulation with a CO2 pressure cartridge, but the CO2 gas supply is not switched at day / night intervals, the shut-off of the CO2 gas supply is controlled by the control electronics and the switching interval is determined by a permanent measurement of the pH value.

[0008] When storing, operating and transporting CO2 pressure cartridges, relevant safety regulations must be observed, e.g., with regard to the CO2 pressure cartridges used, it must be ensured that national safety regulations are applied.

[0009] To fill reusable CO2 pressure cartridges, they must be transported to a filling station and then transported again from there after filling. The transportation of CO2 pressure cartridges is also subject to safety regulations. CO2 pressure cartridges are usually equipped with an overpressure safety device to prevent excessive cartridge pressure and to protect the CO2 pressure cartridge. Typically, the overpressure protection is triggered at a cartridge pressure of about 58 bar.

[0010] For example, CO2 pressurized cartridges having a CO2 charge of more than 50 grams are often not suitable for central warehouse storage due to national safety regulations, and therefore are not suitable for national distribution with distribution to retailers.

[0011] In addition to the above-mentioned transport and logistics problems, as well as the national safety regulations that must be met, the use of CO2 pressure cartridges has another drawback. In order to supply the aquarium with CO2, additional technical equipment is required to reduce the cartridge pressure, up to a maximum of 58 bar. The gas supply pressure, i.e. the pressure in the gas outflow device, must therefore be reduced relative to the cartridge pressure, i.e. the pressure in the CO2 pressure cartridge. This is necessary in order to precisely regulate the amount of CO2 required and to avoid causing the aquarium to swirl with the current in such a way that the animals living in the aquarium are harmed. Furthermore, the animals living in the aquarium may receive too much CO2 and therefore too little oxygen, O2, due to an uncontrolled CO2 supply, which may cause them to suffocate. The pressure reducers used for this purpose further increase the cost of the CO2 cartridge system.

[0012] On the other hand, CO2 gas can be biologically produced on-site, i.e. at the end user, and fed to the aquarium to be fed. For this purpose, a CO2 fermentation system comprises a fermentation vessel, usually made of plastic, which is usually filled with a sugar-containing nutrient substrate. By adding yeast, the fermentation process is started, during which CO2 gas is released. The advantage of this process is that no CO2 pressure cartridges need to be filled and transported. The disadvantage is that the CO2 gas supply cannot be metered, or can only be metered improperly, and the fermentation process cannot be temporarily interrupted. Cutting off the CO2 outflow would lead to an uncontrolled pressure rise in the fermentation vessel. In the worst case, the pressure rise would even burst the fermentation vessel. The CO2 gas produced by the fermentation process is fed from the fermentation vessel to the aquarium without an injection gas outflow device. Injection would lead to an excessive rise in pressure, since the fermentation process can produce more CO2 gas than can be discharged by the injection gas outflow device. Due to these drawbacks, the method is mainly used in aquaria with lower demands, where injection of additional CO2 amounts is not necessary or where the small amount of CO2 introduced in relation to the aquarium water ensures that CO2 overinjection is not possible. However, this means that the risk of persistent CO2 underinjection is imminent. Therefore, the previously known fermentation process is also unsuitable for reliable pH regulation. Summary of the Invention [Problem to be solved by the invention]

[0013] Based on this situation, the object of the present invention is to provide an aquarium pressurization gas container that overcomes the above-mentioned drawbacks.

[0014] In particular, the object relates to a low-cost aquarium pressurized gas bottle having CO2 gas released therein, such that the CO2 gas supply to the aquarium can be shut off without high risk. [Means for solving the problem]

[0015] The object of the invention is achieved by means of the features of the independent main claims. Advantageous embodiments are provided in the dependent claims. Where technically possible, the teachings of the dependent claims can be combined as desired with the teachings of the main claim and with the other dependent claims.

[0016] The object is therefore in particular to provide an aquarium pressurized gas container for supplying an aquarium with CO2 gas produced therein, comprising: - a receiving vessel having a receiving volume for receiving a mixture for fermentation, said mixture comprising mixed water, a nutrient substrate, and a reactant for interacting with said nutrient substrate, said nutrient substrate and said reactant reacting with each other to produce CO2 gas; - a closing device for hermetically sealing said receiving vessel; - a gas outlet device for, in particular, shuttable CO2 gas extraction from the aquarium pressurized gas container for the aquarium, the CO2 gas having a gas supply pressure when entering the gas outlet device; a gas bottle pressure regulator configured to regulate a gas bottle pressure such that it substantially corresponds to said gas supply pressure; Equipped with The aquarium pressurization gas container is achieved by an aquarium pressurization gas container configured such that the receiving volume of the receiving container for the mixture including the mixed water, the nutrient substrate and the reactants depends on the aquarium water volume of the aquarium to be supplied with CO2.

[0017] Advantageous aspects of the claimed invention are explained below, and preferred variant embodiments of the invention are further explained below. The explanations, particularly with regard to advantages and definitions of features, are essentially illustrative and preferred but non-limiting examples. If the explanations are limiting, this is explicitly stated.

[0018] In other words, it is particularly envisaged that the aquarium pressurized gas container for the CO2 gas supply system and the CO2 gas supply system itself can be used to supply advanced aquariums, and precise CO2 control and safe shut-off of the CO2 gas supply can be achieved. The CO2 gas supply system operates without the use of an additional pressure reducer, because the gas container pressure generated in the aquarium pressurized gas container corresponds to the desired gas supply pressure for precise CO2 gas delivery and therefore does not need to be reduced. In contrast, the overpressure rise caused by CO2 generation can be reduced, for example, by a gas container pressure regulator. Thus, the gas container pressure and the gas supply pressure preferably always correspond to each other. The gas container pressure is usually only reduced when the fermentation process starts or when the nutrient substrate, for example a sugar-containing nutrient substrate, and / or the reactant, for example yeast, is no longer available, in particular when it is exhausted. In other words, the gas container pressure is reduced, in particular at the beginning and / or end of the fermentation process.

[0019] The receiving vessel comprises a space for receiving a nutrient substrate and a reactant that interacts with said nutrient substrate. In this respect, the receiving vessel may comprise, for example, another, preferably removable, vessel in its space for receiving a nutrient substrate and a reactant that interacts with said nutrient substrate. This facilitates the exchange of nutrient substrate and reactants. Alternatively, however, it is also possible that the receiving vessel itself preferably receives the nutrient substrate and reactants, so that the nutrient substrate and reactants are only separated from the environment by at least one wall of the receiving vessel.

[0020] The closure device for the airtight sealing of the receiving vessel can be, for example, a lid, which can be completely detachable or removable from the receiving vessel.

[0021] Alternatively, and preferably, it is also possible for the closure device to be connected to the receiving vessel in a movable, for example pivotable, manner.

[0022] Alternatively, and preferably, the receiving vessel and the closing device can be configured such that the receiving vessel comprises, for example, a recess arranged in particular laterally, and the closing device is designed to cover this recess, for example as an airtight plate closure.

[0023] The gas outlet device has the function of precisely regulating or metering the CO2 gas flowing out of the aquarium pressurized gas bottle, and does not function as a pressure reducer. If the gas bottle pressure should be changed, this occurs negligibly. The metered gas outlet device can be a needle valve as an example. In particular, the gas outlet device does not have overpressure protection.

[0024] The CO2 gas has a gas supply pressure when it enters the gas outflow device, which refers to the pressure at which the CO2 gas can enter the aquarium without causing damage. The overall description should be interpreted such that the CO2 gas already has a gas supply pressure when it enters the gas outflow device. In other words, this means that no pressure reducer is placed between the CO2 outlet area of ​​the receiving vessel and / or the closing device and the gas outflow device. As a result, the CO2 gas flows directly from the space where the fermentation process takes place into the gas outflow device.

[0025] The gas bottle pressure regulator can be designed in various ways. However, what is important is that the gas bottle pressure regulator adjusts the gas bottle pressure to basically match the desired gas supply pressure. In particular, the gas bottle pressure regulator can be permanently operable. In a conventional CO2 pressure cartridge, for example, the pressure reducer reduces the gas bottle pressure to the gas supply pressure only when the CO2 gas flows into the aquarium, but the gas bottle pressure is permanently maintained at the gas supply pressure by the gas bottle pressure regulator.

[0026] The space in which the fermentation process takes place therefore does not experience a gas bottle pressure that would interrupt the fermentation process, for example as a result of overpressure, even if the CO2 gas extraction is blocked by the gas outflow device. The gas supply pressure is therefore immediately available as soon as the gas bottle pressure is reached by the started fermentation process.

[0027] The gas bottle pressure substantially corresponds to the gas supply pressure, which in particular means that the deviation of the gas bottle pressure from the gas supply pressure is less than 20 percent, preferably less than 15 percent, particularly preferably less than 10 percent, most preferably less than 5 percent. Here, preferably, the gas bottle pressure can be regarded as a reference value. Alternatively, the gas supply pressure can be regarded as a reference value. Preferably, the gas bottle pressure and the gas supply pressure are equal. With a decrease in deviation, the CO2 gas can be better injected into the gas outlet device for flowing into the aquarium.

[0028] Pressure values ​​are given here in the unit bar. In this context, the mean air pressure of the atmosphere, also called atmospheric pressure, is preferably 101325 Pa, i.e. 101.325 kPa, i.e. 1013.25 hPa, i.e. 1 bar, as a reference value for the ambient pressure at sea level.

[0029] According to the International System of Units (SI), 1 bar is exactly 10 5 is equal to Pascals, so this can be simplified and preferably assumed as atmospheric pressure.

[0030] Pressure values ​​within the range of the general disclosure may be appropriately converted according to one of the above descriptions.

[0031] The pressure values ​​are preferably applied at room temperature, particularly preferably at 21 degrees Celsius.

[0032] All percentage values ​​are based on pressure values.

[0033] The gas bottle pressure and the gas supply pressure, respectively, are considered to be overpressure in the context of the overall disclosure. This means that the preferred pressure should be added to the ambient pressure, which is typically 1 bar. For example, this means that a gas bottle pressure of 0.8 bar at an ambient pressure of 1 bar corresponds to a total gas bottle pressure of 1.8 bar. In particular, this applies to all gas bottle pressures and gas supply pressures.

[0034] Furthermore, this means in particular that the gas bottle pressure and the gas supply pressure are predetermined and limited to an upper limit by the gas bottle pressure regulator.

[0035] Advantageously, the nutrient substrate and / or reactants themselves may be provided in the aquarium pressurized gas container, so that transportation of the aquarium pressurized gas container is not necessary.

[0036] Preferably, the nutrient substrate is a sugar-containing nutrient substrate. Alternatively or additionally, the reactant is preferably yeast. When the nutrient substrate is a sugar-containing nutrient substrate and the reactant is yeast, CO2 gas can be produced as part of a commonly known fermentation process. An advantage is that the nutrient substrate and the reactant can be provided by means available in the home, i.e., for example, sugar water and yeast. However, a gelled sugar-containing nutrient substrate is advantageous, as it produces CO2 gas more uniformly.

[0037] The present invention therefore relates to an aquarium pressurized gas container as a fermentation container for biological and / or chemical CO2 production, in particular by yeast. In this case, when the gas outflow device is shut off, it is possible to keep the generated CO2 gas under pressure in the aquarium pressurized gas container. This allows the gas outflow device to be shut off and opened as frequently as necessary for CO2 extraction. The generated CO2 gas in the aquarium pressurized gas container is therefore also reliably available for quantitatively determined CO2 addition. Fermentation processes or other processes for CO2 production can be replaced by CO2 pressure cartridges for adding CO2 in the aquarium by using an aquarium pressurized gas container. Here, an increase in the gas container pressure above the desired gas supply pressure in the container is prevented, for example, by one or more gas container pressure regulators. When used in the present invention, the gas container pressure regulators, especially designed as pressure relief valves, serve to preset the gas container pressure and not to protect the aquarium pressurized gas container. The generated CO2 gas is preset to a gas supply pressure favorable for further use. In this case, excess CO2 gas is released into the surrounding air by the gas bottle pressure regulator, thus maintaining the gas bottle pressure at a uniform level.

[0038] Compared to CO2 cartridge systems, the overpressure that builds up in the aquarium pressurized gas container is low, so regular inspection of the container for national safety regulations is not required. The present invention solves the storage and transportation problem in that after the ingredients for CO2 generation in the container are consumed, the contents of the container can be easily replaced to start the renewal of CO2 generation. The ingredients to be replenished are common in the home and are not subject to storage and transportation restrictions.

[0039] The combination of two known systems, namely the known CO2 production by nutrient substrate and the known system with the CO2 pressure cartridge mentioned at the beginning, and the conventional overpressure protection, does not work with the aquarium pressurized gas bottle of the present invention. The gas bottle pressure would steadily increase. However, a conventional cost-intensive pressure reducer would also be required for the high gas bottle pressure, because otherwise the gas supply pressure, and therefore the CO2 gas supply into the aquarium, would be too high.

[0040] In other words, the idea can be presented that the principle of bottle fermentation can be used in a modified way to supply CO2 gas into an aquarium.

[0041] An aspect of the invention is that a gas bottle pressure regulator is used as pressure reducer, which preferably limits the gas bottle pressure to 0.6 bar to 1.0 bar, particularly preferably to 0.8 bar, as an overpressure relative to the ambient pressure. The gas bottle pressure adjusted in the proposed way allows CO2 gas to be stored in a limited range, as essentially allowed by the receiving vessel, and also allows a reliably adjustable fine-tuning option of the CO2 gas supply to the aquarium. Furthermore, CO2 diffusers with a flow resistance of, for example, 0.3 to 0.6 bar as an overpressure relative to the ambient pressure can be operated without problems.

[0042] In a closed aquarium pressurized gas container without overpressure protection and with nutrient substrate and reactants, the constantly increasing gas container pressure will, for example, eventually stop CO2 production due to an excessively high gas container pressure. In the worst case, in particular the nutrient substrate and / or reactants may be affected by the high gas container pressure in such a way that CO2 production is no longer possible even with a subsequent reduction in the gas container pressure, which may result in at least partial replacement of the nutrient substrate and / or reactants being necessary. The use of a gas container pressure regulator prevents such an uncontrolled increase in the CO2 content in the aquarium pressurized gas container and thus allows CO2 production to continue for a longer period, up to, for example, 30-40 days. In particular, the limiting factor for maintaining the functionality of the microorganisms used is not the increasing CO2 content of the liquid contained in the container, which kills the microorganisms, but the accumulating alcohol content or the depletion of the nutrients contained therein. The liquid volume can be determined in such a way that the maximum accumulated alcohol content is not a limiting factor and thus the entire nutrient content from the liquid can be used for CO2 production before the microorganisms die due to, for example, lack of nutrients.

[0043] In particular, the aquarium pressurization gas container may include one or more gas container pressure regulators pre-configured to generate an overpressure within the aquarium pressurization gas container that corresponds to an ideal, near-ideal, or approximately ideal initial pressure for metering CO2 gas by a downstream gas outflow device as a metering device.

[0044] Those skilled in the art understand that the gas container pressure or gas supply pressure is not permanently applied. Wherever pressure or reaction is mentioned, this applies on condition that the nutrient substrate and reactants produce a stable CO2 production, unless logic suggests otherwise. In effect, the course of CO2 production corresponds to a Gaussian curve. In the aquarium pressurized gas container, the course of the gas container pressure is somewhat more stable in the medium range. As soon as the nutrient substrate and reactants are added together in the aquarium pressurized gas container, fermentation, and therefore CO2 production, begins immediately. As soon as the desired gas container pressure or gas supply pressure is reached, it remains approximately stable in the aquarium pressurized gas container. As soon as the fermentation components are consumed, the amount of CO2 produced decreases.

[0045] In other words, the amount of aquarium water in the aquarium to be supplied with CO2 directly impacts the size of the aquarium pressurization gas bottle.

[0046] In particular, a nutrient substrate, in particular sugar, a reactant, in particular yeast, and a liquid are mixed to form a mixture. The liquid is preferably water, particularly preferably drinking water. The liquid is also referred to below as mixed water. The mixture releases CO2 during its fermentation process.

[0047] Basically, water can be divided into aquarium water and mixed water, where mixed water is defined above, whereas aquarium water is e.g. water in an aquarium inhabited by fish or other aquatic organisms and / or aquatic plants.

[0048] However, since only the term water may be used, the meaning of either aquarium water or mixed water is determined by the context as a whole.

[0049] In other words, the term volume refers to size or capacity. A preferred unit is the liter, or alternatively the kilogram.

[0050] Preferably, the amounts of nutrient substrates and / or reactants in particular are measured in grams, and / or preferably the volume of mixed water and / or the volume of aquarium water in the aquarium are measured in liters, weight percent or volume percent, with liters being particularly preferred.

[0051] It is not currently envisaged that the aquarium, nutrient substrate, reactants, mixed water and / or aquarium water in the aquarium are part of the scope of protection, nevertheless one or more of these may preferably be included as part of the scope of protection.

[0052] According to a variant embodiment of the invention, it is assumed that the receiving volume of the receiving vessel corresponds linearly to the aquarium water volume of the aquarium. Preferably, this also applies to the amount of nutrient substrate, reactants and / or mixed water to be provided in the receiving volume of the receiving vessel. Surprisingly, it has been found that scaling a certain preferred ratio allows a stable supply of CO2, regardless of the size of the aquarium. For example, when determining a specific ratio of the mixture components, the aquarium pressurized gas container volume and / or the aquarium water volume, it can be selected such that an approximately optimal gas supply pressure is always achieved, so that little CO2 needs to be released via the gas container pressure regulator. It has been found that the optimal ratio is scalable, and that the overall ratio once determined for a specific nutrient substrate can be used for different aquarium pressurized gas container volumes and / or aquarium water volumes.

[0053] According to a variant embodiment of the invention, the receiving volume of the receiving vessel is assumed to be the same multiple of 1.0 liters to 1.5 liters for aquaria with aquarium water volume of multiples of 100 liters to 150 liters. In this embodiment, the receiving volume is preferably configured to receive multiples of 100 grams to 300 grams of sugar, multiples of 0.25 grams to 0.75 grams of yeast, and multiples of 0.75 liters to 1.25 liters of mixed water. This is found to be a very suitable ratio for a suitable receiving volume for the mixture of sugar, yeast and mixed water, providing a consistent CO2 supply and a fish-friendly and plant-friendly gas supply pressure for different aquarium sizes. This solution is also sustainable since the sugar or yeast do not ferment beyond uneconomical levels. The resulting CO2 pressure is slightly higher than the gas supply pressure.

[0054] According to an alternative embodiment of the invention, the receiving volume of the receiving vessel is assumed to be a multiple of 1.3 liters for an aquarium with a multiple of 125 liters of aquarium water volume. In this embodiment, the receiving volume is preferably configured to receive a multiple of 250 grams of sugar, a multiple of 0.5 grams of yeast, and a multiple of 1.0 liter of mixed water. This is found to be the optimal ratio for a suitable receiving volume for the sugar, yeast and mixed water mixture, providing a consistent CO2 supply and a fish-friendly and plant-friendly gas supply pressure for different aquarium sizes. This solution is also sustainable, since the sugar or yeast do not ferment beyond uneconomical levels. The resulting CO2 pressure is slightly higher than the gas supply pressure.

[0055] In other words, the ratio in liters of the volume of aquarium water in the aquarium to the receiving volume of the receiving vessel is 125:1.3.

[0056] If sugar, yeast and mixed water are also to be added to the receiving volume, the ratio of the volume of the aquarium water in the aquarium in liters to the receiving volume of the receiving vessel in liters, sugar in grams, yeast in grams and mixed water in liters is 125:1.3:250:0.5:1.0.

[0057] The aquarium water and / or mixed water are particularly suitable as drinking water and / or tap water. Alternatively, distilled water can be used. Exemplary yeast preferably utilizes water for survival and reaction. Therefore, it is desirable to use clean water, especially drinking water, that is free of impurities.

[0058] The specification "essentially" means that deviations of up to 10% from the specified ratios are included, however, the specified ratios themselves are particularly preferred.

[0059] The specification of "multiples" indicates that these quantities can preferably be scaled either upwards or downwards. In particular, these quantities include respective deviations of at least plus / minus 10% for individual or some values.

[0060] The indications of amounts by weight or volume are to be understood in the context of this patent application not only as the indicated values ​​but also as multiples of these values.

[0061] Thus, values ​​such as 1 and 0.6 can also mean, for example, 3 and 1.8 by a factor of 3. Similarly, by an exemplary factor of 0.5, they can also mean 0.5 and 0.9.

[0062] By way of example, for an aquarium having an aquarium water volume of between 200 liters and 300 liters, 400 grams to 600 grams of sugar, 0.5 grams to 1.5 grams of yeast, and 1.5 liters to 2.5 liters of mixed water, and / or an aquarium gas bottle having an aquarium gas bottle volume of 2.0 liters to 3.0 liters (in each case inclusive).

[0063] Particularly preferably, for an aquarium having an aquarium water volume of 125 liters, 250 grams of sugar, 0.5 grams of yeast and 1.0 liter of mixed water and / or an aquarium gas bottle having an aquarium gas bottle volume of 1.3 liters (in each case both ends inclusive) are used.

[0064] When an aquarium having an aquarium water volume of 250 liters is illustratively scaled by factor 2, 500 grams of sugar, 1.0 gram of yeast, and 2.0 liters of mixed water, and / or an aquarium pressure gas bottle having an aquarium gas bottle volume of 2.3 liters are used (in each case inclusive). In this case, the aquarium pressure gas bottle having an aquarium pressure gas bottle volume of 2.3 liters constitutes 90 percent of the factor 2, resulting in 2.34 liters, which is 2.3 liters when rounded down. Optionally, an aquarium pressure gas bottle volume of 2.6 liters is also preferred.

[0065] For an aquarium having an aquarium water volume of 500 liters, illustratively scaled by a factor of 4, 1000 grams of sugar, 2.0 grams of yeast and 4.0 liters of mixed water and / or an aquarium gas bottle with an aquarium gas bottle volume of 5.2 liters would be used (in each case inclusive).

[0066] In principle, a demand-based production rate of CO2 can be achieved using the above information. In light of the knowledge that the production rate depends on the amount of mixtures, e.g., sugar, yeast and mixed water, used, a demand-based production rate can be achieved, for example, by using a volume size of the aquarium pressure gas container corrected for each different aquarium water volume, together with the amount of nutrient substrate contained therein in a correspondingly corrected manner.

[0067] This means that more nutrient substrate will increase CO2 production or less nutrient substrate will result in a decrease in production rate.

[0068] Due to the design of the aquarium pressure gas container for supplying the CO2 gas generated in the aquarium to the aquarium, when a certain gas supply pressure is reached, the generated excess CO2 is released into the environment via the gas container pressure regulator. Since the amount of CO2 generated depends greatly on the volume of the mixture used, which contains in particular the mixed water, sugar and yeast, it has proven advantageous to use aquarium pressure gas containers with corresponding dimensions of the aquarium pressure gas container volume and / or corresponding amounts of nutrient substrate for different size categories of aquariums. The advantage of this variant is that at least approximately the required amount of CO2 is generated in the respective aquarium pressure gas container, and therefore only a small amount of excess CO2 is preferably released into the environment by the gas container pressure regulator.

[0069] Another advantage of the whole concept is that the risk of CO2 overfilling in the aquarium is minimized, as long as the CO2 production based on the above values ​​does not exceed the actual demand by a large extent. Even if a system component fails, if the parameters are incorrectly adjusted by an inexperienced user, or if the CO2 gas is generated in the aquarium and enters the aquarium, no serious damage with lasting effects will occur if a properly selected aquarium pressure gas container with a suitable nutrient substrate has been used beforehand. As a result, the risk of errors is significantly reduced, operation is significantly simplified even for an inexperienced user, and the safety of the aquarium organisms is increased.

[0070] According to a variant embodiment of the invention, it is assumed that the gas bottle pressure regulator is designed so that the gas bottle pressure has an overpressure relative to the ambient pressure of 0.3 bar or more, preferably 0.5 bar or more, particularly preferably 0.6 bar or more. This corresponds to a preferred gas supply pressure for supplying sufficient CO2 gas to the aquarium. Since the gas bottle pressure and the gas supply pressure are substantially equal to each other, the advantageously designed gas bottle pressure regulator allows sufficient CO2 to be supplied to the aquarium.

[0071] Alternatively, it is preferably assumed that the gas bottle pressure regulator is configured such that the gas bottle pressure has an overpressure of 0.8 bar or more relative to the ambient pressure, which has been found to be a particularly preferred value for optimally supplying CO2 gas to the aquarium, so that a preferred pH value for the ecosystem is set in a conventional aquarium.

[0072] According to a variant embodiment of the present invention, it is assumed that the gas bottle pressure regulator is configured such that the gas bottle pressure has an overpressure relative to the ambient pressure of 3.0 bar or less, preferably 1.0 bar or less, particularly preferably 0.9 bar or less. This corresponds to a preferred gas supply pressure for supplying sufficient CO2 gas to the aquarium. Since the gas bottle pressure and the gas supply pressure essentially match each other, an advantageously designed gas bottle pressure regulator allows optimal CO2 supply to the aquarium without swirling the water of the aquarium in a manner that is harmful to the ecosystem or without adversely affecting the pH value due to excess CO2 gas.

[0073] Alternatively, it is assumed that the gas bottle pressure regulator is preferably configured such that the gas bottle pressure has an overpressure of 0.8 bar or less relative to the ambient pressure, which has been found to be a particularly preferred value for optimally supplying CO2 gas into the aquarium, so that a preferred pH value for the ecosystem is set in the conventional aquarium.

[0074] According to a variant embodiment of the invention, it is assumed that the gas outflow device comprises a needle valve. A preferred needle valve is a type of valve with a small orifice and a threaded needle-shaped plunger. It allows for precise regulation of the flow. The plunger can be moved longitudinally by a screw. The needle-shaped tip therefore only slightly enlarges or reduces the opening of the valve, because the needle has to be moved over a relatively large distance even for small changes. Due to the small taper angle of the needle, a very sensitive regulation of the flow rate is thus achieved. Valves sealed with packing are dynamically sealed valves. Dynamic sealing means that a relative movement between the sealing body (shaft / ball / plug) and the sealing material is possible. The latter is also called packing. Typical sealing materials are Teflon® or O-rings made of Perbunan®, Viton®, EPR / EPDM, Kalrez® or PEEK for standard valves. These types of valves have a silicone-based lubricant at the factory, which extends the life of the packings, minimizes wear within the valve, and lowers the required actuation torque.

[0075] According to a variant embodiment of the invention, it is assumed that the gas bottle pressure regulator comprises a safety valve. A preferred safety valve, also called pressure relief valve, belongs to the safety fittings according to DIN EN 806-1 or DIN 3211 and protects the pressurized water tank and the pressurized gas bottle from an undesired gas bottle pressure increase. The standards are intended to mean the currently valid version, but at least according to the version at the date of application. If a certain bottle pressure is exceeded, CO2 gas is discharged into the atmosphere or into a collection pipeline.

[0076] According to a variant embodiment of the present invention, it is assumed that the water bath pressurized gas container is provided with an opening safety device in order to adjust the gas container pressure to ambient pressure in case of activation. If the water bath pressurized gas container is under pressure, opening can be difficult or even dangerous. However, when the opening safety device is activated, the gas container pressure drops to ambient pressure, so that the closure device can be opened without increasing the danger.

[0077] According to a variant embodiment of the invention, the water bath pressurized gas container is reusable, in particular the receiving container is airtight reclosable by means of the closing device. This is particularly environmentally friendly. Typically, fermentation containers are disposable. Due to the fact that the closing device is airtight reclosable, the water bath pressurized gas container can be reused in an environmentally friendly manner.

[0078] According to a variant embodiment of the invention, it is assumed that the closure device is in the form of a screw-on lid, which allows for a suitable embodiment of the aquarium pressurized gas container while still allowing a reliable seal even after many gas supply cycles.

[0079] According to an alternative embodiment of the invention, it is assumed that the closure device is formed as a snap-on lid. Preferably, the snap-on lid comprises a movable closure clip which interacts in a form-fitting manner with a correspondingly formed receiving vessel. This form-fitting principle has been found to advantageously seal the aquarium pressurized gas container even at low pressure. In particular, the snap-on lid comprises a rotating closure mechanism, preferably arranged coaxially with the closure device, i.e. with the same axis of rotation. When the rotating closure mechanism is activated, the closure clamp tightens or loosens the connection between the receiving vessel and the closure device. This allows easy handling of the aquarium pressurized gas container while allowing a reliable seal even after many gas supply cycles.

[0080] According to a variant embodiment of the present invention, it is assumed that the gas outflow device comprises a shutoff mechanism for stopping CO2 gas extraction. The shutoff mechanism can be operated, for example, when the plants in the aquarium do not receive sunlight for photosynthesis, such as at night. This can prevent the pH value in the aquarium from developing unfavorably, especially since the plants may even release CO2 gas at night. Thereby, the increasing gas bottle pressure can be regulated by the gas bottle pressure regulator.

[0081] By way of example, the shutoff mechanism may comprise an electrically powered solenoid valve, which may be provided as an alternative or in addition to the shutoff mechanism.

[0082] According to a variant embodiment of the invention, it is assumed that the gas outflow device comprises a gas supply bubble detection device for detecting the amount of CO2 gas flowing into the gas outflow device. The gas supply bubble detection device can be, for example, a bubble counter. Bubble counters are conventionally used in chemical laboratories in experimental work with gases to check the strength of the gas flow. Bubbles of uniform size come out of the inlet tube and can be counted if the gas flow is not too large. The number of bubbles per period is a measure of the amount of CO2 gas flowing through the device. If the number of bubbles per period decreases, this can indicate that the nutrient substrate and / or reactants are generating less CO2 gas due to their gradual decrease until they no longer generate any CO2 gas at all. For example, if one bubble is detected every 2 seconds instead of every second, the end user can infer from there that he should obtain fresh nutrient substrate and / or fresh reactants. This ensures that the time without CO2 generation is minimized. The bubble by bubble injection also aids in the precise operation of the CO2 diffuser, which allows for constant CO2 saturation of the aquarium water with the previously calculated injection delivered via the amount of bubbles per unit time.

[0083] The shutoff mechanism may be located in an assembly together with the gas supply bubble detection device, as one example.

[0084] According to an alternative embodiment of the invention, it is assumed that a gas outlet device is arranged in the receiving vessel so that CO2 gas can flow from the receiving vessel into the gas outlet device. The closure device can be more easily opened without using the gas outlet device as a bulky component in order to exchange the nutrient substrate and / or reactants.

[0085] Alternatively or additionally, the gas outflow device can be arranged in the closure device so that CO2 gas can flow from the closure device to the gas outflow device, which is a particularly useful embodiment when the closure device is designed as a top cover so that the gas outflow device is easily accessible from above.

[0086] According to a variant embodiment of the invention, it is assumed that the water bath pressurized gas container comprises a seal arranged circumferentially in the joint area between the receiving container and the closing device, so that in the closed state of the water bath pressurized gas container, the gas container pressure presses the seal into the joint area between the receiving container and the closing device, resulting in an airtight closure of the receiving container. It has been found that this type of sealing system, which seals well especially at high pressures, allows for a long-lasting seal. In this context, the seal arranged circumferentially in the joint area between the receiving container and the closing device can be understood as a ring. This ring presses itself into the contact gap between the receiving container and the closing device. The higher the gas container pressure, the more firmly the ring is pressed radially outwards and thus into the contact gap.

[0087] According to a variant embodiment of the invention, the gas outflow device and the gas container pressure regulator are arranged in a common module connected to the receiving container and / or the closing device. In particular, the module is replaceable. Thus, if the module is defective, it can be easily replaced. Furthermore, this increases the functionality of the aquarium pressurized gas container. For example, the required amount of CO2 gas to be supplied may depend on the plants and / or organisms present in the aquarium, in particular fish. In this case, the replacement or insertion of the required module can provide the technically unskilled end user with a solution that is simple and reduces the causes of failure.

[0088] According to a variant embodiment of the invention, it is assumed that a gas bottle pressure regulator is connected to the receiving vessel and / or to the closing device. In the receiving vessel, the gas bottle pressure regulator is not movable, so that the risk of damage is reduced when the closing device formed as a lid is released from the water bath pressurized gas bottle. In contrast, the gas bottle pressure regulator in the closing device can be more easily replaced if necessary, for example to set a new gas bottle pressure or gas supply pressure.

[0089] Further, a CO2 gas supply system comprising an aquarium pressurized gas container according to any one of the aforementioned features is advantageous, the CO2 gas supply system comprising a CO2 gas supply line connected to a gas outlet device for supplying CO2 gas generated in the aquarium pressurized gas container to the aquarium, the CO2 gas supply line being configured to be immersed in the aquarium at an end remote from the gas outlet means.

[0090] Preferably, the CO2 gas supply line is equipped at its end remote from the gas outflow device with a CO2 diffuser, which is particularly preferably operable with a flow resistance of 0.3 to 0.6 bar as an overpressure relative to the ambient pressure, which has been found to allow the CO2 gas to be better dissolved in the water of the aquarium.

[0091] In the following, the invention will be explained in more detail by means of preferred examples of embodiment with reference to the attached drawings. [Brief description of the drawings]

[0092] [Figure 1] FIG. 1 is a schematic side view of a CO2 cartridge system including a CO2 pressure cartridge for CO2 gas supply of an aquarium according to a first prior art. [Diagram 2] FIG. 1 is a schematic side view of a CO2 fermentation system according to a second prior art, comprising a fermentation vessel for CO2 gas supply of an aquarium. [Diagram 3]FIG. 2 is a schematic side view of a CO2 gas supply system including an aquarium pressurized gas container for CO2 gas supply for the aquarium, in accordance with a preferred exemplary embodiment of the present invention. [Figure 4] 4 is a schematic side view of an aquarium pressurization gas container according to a further preferred exemplary embodiment of the present invention, which is designed instead of the aquarium pressurization gas container according to FIG. 3. [Diagram 5] FIG. 5 is an alternative schematic side view of the aquarium pressurized gas container according to FIG. 4. [Figure 6] 6 is a schematic top view of the water tank pressurized gas container according to FIGS. 4 and 5; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0093] The described exemplary embodiments are merely examples that may be modified and / or supplemented in various ways within the scope of the claims. Each feature described for a particular exemplary embodiment may be used independently or in combination with other features in any other exemplary embodiment. Any feature described for an exemplary embodiment of a particular claim category may be used in a corresponding manner in an exemplary embodiment of another claim category.

[0094] FIG. 1 shows a previously known CO2 cartridge system as a CO2 gas supply system 28.

[0095] FIG. 2 shows a previously known fermentation system as a CO2 gas supply system 28.

[0096] 3 shows a CO2 gas supply system 28 according to a preferred exemplary embodiment of the present invention, which comprises an aquarium pressurized gas container 10 according to the first embodiment.

[0097] Figure 4 shows an aquarium pressurized gas container 10 according to a second embodiment, which may also be used in a CO2 gas supply system 28 according to Figure 3. Figures 4 and 5 show the aquarium pressurized gas container 10 according to embodiment 2 in a side view in two different rotated positions. Figure 6 shows the aquarium pressurized gas container 10 according to embodiment 2 in a top view.

[0098] FIG. 1 shows a CO2 cartridge system as a CO2 gas supply system 28, which comprises a CO2 pressure cartridge as an aquarium pressurized gas container 10. The aquarium pressurized gas container 10 serves to supply the aquarium 12 with CO2 gas from a CO2 pressure cartridge, which is formed as a receiving container 14 filled with CO2 gas. The receiving container 14 is closed in an airtight manner by a closing device 16. The CO2 pressure cartridge is provided with a 58-bar pressure relief valve 34 to prevent excessive cartridge pressure p_G and to protect the CO2 pressure cartridge. Typically, the 58-bar pressure relief valve 34 is triggered at a cartridge pressure p_G of about 58 bar. To reduce this cartridge pressure p_G, the gas outflow device 18 for CO2 gas extraction from the CO2 pressure cartridge for the aquarium 12 comprises a cost-intensive pressure reducer, so that the cartridge pressure p_G is significantly reduced and reaches a gas supply pressure p_B, which is many times smaller than the cartridge pressure p_G. The CO2 cartridge system includes a CO2 gas supply line 30 connected to the gas outflow device 18 for supplying CO2 gas to the water bath 12. In this regard, the CO2 gas supply line 30 is configured to be submerged in the water bath 12 at an end remote from the gas outflow device 18. A shutoff mechanism 18a may be used to stop the CO2 gas extraction from the CO2 pressure cartridge. Once the CO2 gas has completely flown out of the CO2 pressure cartridge, the CO2 pressure cartridge is moved to a CO2 filling station and refilled with CO2 gas.

[0099] FIG. 2 shows a CO2 gas supply system 28 configured as a fermentation system, including a fermentation vessel configured as an aquarium pressurized gas vessel 10 for supplying CO2 gas generated in the aquarium pressurized gas vessel 10 to the aquarium 12. The fermentation system includes a receiving vessel 14 for receiving a mixture, the mixture including water, also called mixed water, a nutrient substrate, and a reactant for interacting with the nutrient substrate, which react with each other to generate CO2 gas. However, the CO2 gas immediately flows out, so that no gas vessel pressure p_G builds up in the fermentation vessel. Furthermore, the fermentation system includes a closing device 16 for closing the receiving vessel 14. The closing device 16 is further configured as a gas outlet device 18 for extracting CO2 gas from the fermentation vessel for the aquarium 12, the CO2 gas having a gas supply pressure p_B corresponding to the gas vessel pressure p_G when it flows into the gas outlet device 18. The fermentation system does not include a shutoff mechanism, since it may cause the fermentation vessel to burst. The fermentation system includes a CO2 gas supply line 30 connected to the gas outlet device 18 for supplying CO2 gas generated in the aquarium pressurized gas container 10 to the aquarium 12, the CO2 gas supply line 30 being configured to be submerged in the aquarium 12 at an end remote from the gas outlet device 18.

[0100] FIG. 3 illustrates a preferred exemplary embodiment of a CO 2 gas supply system 28 comprising an exemplary aquarium pressurized gas container 10 .

[0101] The aquarium pressurized gas container 10 is configured to supply CO2 gas generated within the aquarium pressurized gas container 10 to the aquarium 12.

[0102] For this purpose, the aquarium pressurized gas container 10 comprises: - a receiving vessel 14 having a receiving volume for receiving a mixture for fermentation, the mixture comprising mixed water, a nutrient substrate and a reactant for interacting with the nutrient substrate, the nutrient substrate and the reactant reacting with each other to produce CO2 gas; - a closing device 16 for hermetically sealing the receiving container 14; - a gas outlet 18 for CO2 gas extraction from an aquarium pressurized gas container 10 for an aquarium 12, the CO2 gas having a gas supply pressure p_B when entering the gas outlet 18; a gas bottle pressure regulator 20 for regulating the gas bottle pressure p_G substantially equal to the gas supply pressure p_B.

[0103] The aquarium pressurized gas container 10 is configured such that the receiving volume of the receiving container 14 for mixed water, nutrient substrates and reactants depends on the aquarium water volume of the aquarium 12 to be supplied with CO2.

[0104] 3 shows a preferred exemplary embodiment, where for an aquarium 12 having an aquarium water capacity of a multiple of 125 liters, the receiving volume of the receiving vessel 14 is a same multiple of 1.3 liters. Further, the receiving volume is configured to receive a same multiple of 250 grams of sugar, a same multiple of 0.5 grams of yeast, and a same multiple of 1.0 liter of mixed water.

[0105] The CO2 gas supply system 28 further includes a CO2 gas supply line 30 connected to the gas outflow device 18 for supplying the CO2 gas generated in the aquarium pressurized gas container 10 to the aquarium 12, the CO2 gas supply line 30 being configured to be immersed in the aquarium 12 at its end remote from the gas outflow device 18.

[0106] Preferably, the CO2 gas supply line 30 is provided with a CO2 diffuser 32 at its end remote from the gas outflow device 18, which is particularly preferably operable with a flow resistance of 0.3 bar to 0.6 bar as an overpressure relative to the ambient pressure p_U.

[0107] It is further preferred, but not presented in more detail, that the gas bottle pressure regulator 20 is designed so that the gas bottle pressure p_G is an overpressure relative to the ambient pressure p_U of less than 0.3 bar, preferably less than 0.5 bar, particularly preferably less than 0.6 bar.

[0108] It is further preferred, but not presented in more detail, that the gas bottle pressure regulator 20 is designed so that the gas bottle pressure p_G is less than or equal to 3.0 bar, preferably less than or equal to 1.0 bar, particularly preferably less than or equal to 0.9 bar.

[0109] Particularly preferably, but not shown, the gas bottle pressure regulator 20 is designed such that the gas bottle pressure p_G is 0.8 bar overpressure relative to the ambient pressure p_U, or, as a non-exhaustive example, the gas bottle pressure p_G is 0.8 bar higher than the ambient pressure p_U.

[0110] More preferably, although not presented in more detail, the gas outlet device 18 comprises a needle valve and / or the gas bottle pressure regulator 20 comprises a safety valve.

[0111] According to figures 3 to 6, the water bath pressurised gas container 10 is preferably provided with an opening safety device 22 for regulating the gas container pressure p_G to the ambient pressure p_U during its operation.

[0112] 3 to 6, it is preferred that the aquarium pressurized gas container 10 is reusable, in particular the receiving container 14 being reclosable in an airtight manner by means of a closure device 16.

[0113] According to FIG. 3, the closure device 16 is preferably designed as a screw cap.

[0114] According to FIGS. 4 to 6, the closure device 16 is preferably designed as a snap-on lid, preferably equipped with a rotating closure mechanism 24 .

[0115] 3 to 6, the gas outflow device 18 preferably includes a shutoff mechanism 18a for stopping the extraction of CO2 gas.

[0116] 4-6, the gas outflow device 18 preferably includes a gas supply bubble detector 26 for detecting the amount of CO2 gas flowing into the gas outflow device 18. As shown in FIG.

[0117] According to FIGS. 3-6, it is preferable that the gas outflow device 18 is disposed in the closure device 16 so that the CO 2 gas can flow from the closure device 16 to the gas outflow device 18 .

[0118] More preferably, the aquarium pressurized gas container 10 includes a circumferentially arranged seal in the joint area between the receiving container 14 and the closure device 16, so that when the aquarium pressurized gas container 10 is closed, the gas container pressure p_G presses the seal into the joint area between the receiving container 14 and the closure device 16, thereby resulting in an airtight seal of the receiving container 14, but this is not presented in more detail.

[0119] More preferably, the gas outflow device 18 and the gas container pressure regulator 20 are arranged in a common module connected to the receiving container 14 and / or the closing device 16, but this will not be presented in more detail.

[0120] According to FIGS. 4-6, a gas bottle pressure regulator 20 is preferably connected to the closure device 16 .

[0121] The gas outflow device 18 may include a shutoff mechanism 18a. However, this is an optional embodiment and is independent of the other features.

[0122] The gas outflow device 18 may include a gas bottle pressure regulator 20. However, this is an optional embodiment and is independent of other features.

[0123] The gas outlet device 18 may be equipped with an opening safety device 22. However, this is an optional embodiment and is independent of the other features. [Explanation of symbols]

[0124] 10. Water tank pressurized gas cylinder 12 Aquarium 14 Receptor Container 16 Closing device 18 Gas Outflow Device 18a Closing mechanism 20 Gas cylinder pressure regulator 22 Open safety device 24 Rotating Closure Mechanism 26 Bubble counter 28 CO2 Gas Supply System 30 CO2 gas supply line 32 CO2 Diffuser 34 58 bar pressure relief valve p_B Gas supply pressure p_G Gas cylinder pressure p_U Ambient pressure

Claims

1. A water tank pressurization gas container for supplying CO2 gas generated in the water tank pressurization gas container (10) to a water tank (12), - a receiving vessel (14) having a receiving volume for receiving a mixture for fermentation, said mixture comprising mixed water, a nutrient substrate and a reactant for interacting with said nutrient substrate, said nutrient substrate and said reactant reacting with each other to produce CO2 gas; - closure means (16) for closing said receiving vessel (14) in an airtight manner; - a gas outlet (18) for interruptible CO2 gas extraction from the water tank pressurized gas container (10) for the water tank (12), the CO2 gas having a gas supply pressure (p_B) when entering the gas outlet (18); and - a gas bottle pressure regulator (20) configured to regulate the gas bottle pressure (p_G) such that it substantially corresponds to said gas supply pressure (p_B); Equipped with The aquarium pressurization gas container (10) is configured such that the receiving volume of the receiving vessel (14) for the mixture depends on the aquarium water volume of the aquarium (12) to be supplied with CO2.

2. 2. The aquarium pressurized gas container of claim 1, wherein the receiving volume of the receiving vessel (14) corresponds linearly to the aquarium water volume of the aquarium (12).

3. The receiving volume of the receiving vessel (14) is a multiple of 1.0 liters to 1.5 liters for the aquarium (12) having an aquarium water volume of 100 liters to 150 liters; 2. The aquarium pressurized gas container of claim 1, wherein the receiving volume is configured to receive between 100 grams and 300 grams of sugar, between 0.25 grams and 0.75 grams of yeast, and between 0.75 liters and 1.25 liters of mixed water.

4. The receiving volume of the receiving vessel (14) is a multiple of 1.3 liters for an aquarium (12) having an aquarium water volume that is a multiple of 125 liters; 2. The aquarium pressurized gas container of claim 1, wherein the receiving volume is preferably configured to receive an equal multiple of 250 grams of sugar, an equal multiple of 0.5 grams of yeast, and an equal multiple of 1.0 liter of mixed water.

5. 2. The aquarium pressurized gas bottle according to claim 1, wherein the gas bottle pressure regulator (20) is designed such that the gas bottle pressure (p_G) is an overpressure relative to the ambient pressure of 0.3 bar or more, preferably 0.5 bar or more, particularly preferably 0.6 bar or more.

6. 2. The aquarium pressurized gas bottle according to claim 1, wherein the gas bottle pressure regulator (20) is designed such that the gas bottle pressure (p_G) is an overpressure relative to the ambient pressure of less than or equal to 3.0 bar, preferably less than or equal to 1.0 bar, particularly preferably less than or equal to 0.9 bar.

7. 2. The aquarium pressurized gas bottle of claim 1, wherein the gas outlet device (18) comprises a needle valve and / or the gas bottle pressure regulator (20) comprises a safety valve.

8. 2. The aquarium pressurized gas bottle according to claim 1, comprising an opening safety device (22) for adjusting the gas bottle pressure (p_G) to the ambient pressure (p_U) during operation.

9. 2. The aquarium pressurized gas container according to claim 1, which is reusable, in particular the receiving vessel (14) being reclosable in an airtight manner by means of the closing device (16).

10. 2. The aquarium pressurized gas container according to claim 1, wherein the closure device (16) is designed as a screw-on lid or as a snap-on lid, preferably with a rotating closure mechanism (24).

11. 2. The aquarium pressurized gas container of claim 1, wherein the gas outlet device (18) comprises a shutoff mechanism (18a) for stopping the CO2 gas extraction.

12. 2. The aquarium pressurized gas container of claim 1, wherein the gas outlet device (18) comprises a gas supply bubble detector (26) for detecting the amount of CO2 gas flowing into the gas outlet device (18).

13. 2. The aquarium pressurized gas container according to claim 1, wherein the gas outflow device (18) is arranged in the receiving vessel (14) and / or in the closing device (16) so that the CO2 gas can flow from the receiving vessel (14) and / or from the closing device (16) into the gas outflow device (18).

14. 2. The aquarium pressurized gas container according to claim 1, further comprising a seal arranged circumferentially in the joint area between the receiving container (14) and the closing chain device (16), wherein in the closed state of the aquarium pressurized gas container (10), the gas container pressure (p_G) presses the seal into the joint area between the receiving container (14) and the closing chain device (16), thereby obtaining an airtight closure of the receiving container (14).

15. 2. The aquarium pressurized gas container according to claim 1, wherein the gas outlet device (18) and the gas container pressure regulator (20) are arranged in a common module connected to the receiving container (14) and / or the closing device (16).

16. 2. The aquarium pressurized gas bottle of claim 1, wherein the gas bottle pressure regulator (20) is connected to the receiving vessel (14) and / or the closure device (16).

17. A CO2 gas supply system (28) comprising an aquarium pressurized gas container (10) according to claim 1, a CO2 gas supply line (30) connected to the gas outlet device (18) for supplying the CO2 gas generated in the water tank pressurized gas container (10) to the water tank (12); A CO2 gas supply system (28), wherein the CO2 gas supply line (30) is configured to be immersed in the water bath (12) at an end remote from the gas outlet device (18).

18. 18. The CO2 gas supply system (28) of claim 17, wherein the CO2 gas supply line (30) is provided with a CO2 diffuser (32) at its end remote from the gas outflow device (18), the CO2 diffuser (32) being preferably operable with a flow resistance of 0.3 bar or more and 0.6 bar or less as an overpressure relative to ambient pressure.

Images