CO2 gas supply by means of an aquarium pressurized gas vessel with a nutrient substrate
The present invention relates to an aquarium pressurized gas vessel for supplying an aquarium ( 12 ) with CO2 gas generated in the aquarium pressurized gas vessel ( 10 ), the aquarium pressurized gas vessel ( 10 ) having a receiving vessel ( 14 ) for receiving a nutrient substrate and a reactant interacting with the nutrient substrate such that the nutrient substrate and the reactant react with each other to generate CO2 gas; a closing device ( 16 ) for closing the receiving vessel ( 14 ) in a pressure-tight manner; a gas outflow device ( 18 ) for extracting CO2 gas from the aquarium pressurized gas vessel ( 10 ) for the aquarium ( 12 ), the CO2 gas having a gassing pressure (p_B) when flowing into the gas outflow device ( 18 ); a gas vessel pressure regulator ( 20 ) for adjusting a gas vessel pressure (p_G) which substantially corresponds to the gassing pressure (p_B). Further, the present invention relates to a CO2 gassing system ( 28 ) which includes the aforementioned aquarium pressurized gas vessel ( 10 ).
1. An aquarium pressurized gas vessel for supplying an aquarium ( 12 ) with CO2 gas generated in the aquarium pressurized gas vessel ( 10 ), wherein the aquarium pressurized gas vessel ( 10 ) comprises:
a receiving vessel ( 14 ) for receiving a nutrient substrate and a reactant interacting with the nutrient substrate such that the nutrient substrate and the reactant react with each other to generate CO2 gas;
a closing means ( 16 ) for closing the receiving vessel ( 14 ) in a pressure-tight manner;
a gas outflow device ( 18 ) for CO2 gas extraction from the aquarium pressurized gas vessel ( 10 ) for the aquarium ( 12 ), wherein the CO2 gas has a gassing pressure (p_B) when flowing into the gas outflow device ( 18 ); and
a continuously operating, permanently actuatable gas vessel pressure regulator ( 20 ) which is configured for adjusting and maintaining a gas vessel pressure (p_G) in such a way that it substantially corresponds to the gassing pressure (p_B).
2. An aquarium pressurized gas vessel according to claim 1 , wherein the gas vessel pressure regulator ( 20 ) is designed in such a way that the gas vessel pressure (p_G) is an overpressure relative to an ambient pressure of at least and including 0.3.
3. An aquarium pressurized gas vessel according to claim 1 , wherein the gas vessel pressure regulator ( 20 ) is designed in such a way that the gas vessel pressure (p_G) is an overpressure relative to an ambient pressure of at most and including 3.0.
4. An aquarium pressurized gas vessel according to claim 1 , wherein the gas outflow device ( 18 ) comprises a needle valve and/or the gas vessel pressure regulator ( 20 ) comprises a safety valve.
5. An aquarium pressurized gas vessel according to claim 1 , wherein the aquarium pressurized gas vessel ( 10 ) comprises an opening safety device ( 22 ) in order to adapt the gas vessel pressure (p_G) to the ambient pressure (p_U) in the event of its actuation.
6. An aquarium pressurized gas vessel according to claim 1 , wherein the aquarium pressurized gas vessel ( 10 ) is reusable, wherein the receiving vessel ( 14 ) is reclosable in a pressure-tight manner by means of the closing device ( 16 ).
7. An aquarium pressurized gas vessel according to claim 1 , wherein the closing device ( 16 ) is designed as a screw-on lid or as a snap-on lid.
8. An aquarium pressurized gas vessel according to claim 1 , wherein the gas outflow device ( 18 ) comprises a shut-off mechanism ( 18 a ) for stopping the CO2 gas extraction.
9. An aquarium pressurized gas vessel according to claim 1 , wherein the gas outflow device ( 18 ) comprises a gassing bubble detection device ( 26 ) for detecting the amount of CO2 gas flowing into the gas outflow device ( 18 ).
10. An aquarium pressurized gas vessel according to claim 1 , wherein the gas outflow device ( 18 ) is arranged at the receiving vessel ( 14 ) and/or at the closing device ( 16 ), so that the CO2 gas can flow into the gas outflow device ( 18 ) from the receiving vessel ( 14 ) and/or from the closing device ( 16 ).
11. An aquarium pressurized gas vessel according to claim 1 , wherein the aquarium pressurized gas vessel ( 10 ) comprises a seal which is arranged circumferentially in a coupling region between the receiving vessel ( 14 ) and the closing device ( 16 ), so that, in the closed state of the aquarium pressurized gas vessel ( 10 ), the pressure-tight closing of the receiving vessel ( 14 ) is obtained in that the gas vessel pressure (p_G) presses the seal into the coupling region between the receiving vessel ( 14 ) and the closing device ( 16 ).
12. An aquarium pressurized gas vessel according to claim 1 , wherein the gas outflow device ( 18 ) and the gas vessel pressure regulator ( 20 ) are arranged in a common module which is connected to the receiving vessel ( 14 ) and/or to the closing device ( 16 ).
13. An aquarium pressurized gas vessel according to claim 1 , wherein the gas vessel pressure regulator ( 20 ) is connected to the receiving vessel ( 14 ) and/or to the closing device ( 16 ).
14. A CO2 gassing system ( 28 ) comprising an aquarium pressurized gas vessel ( 10 ) according to claim 1 ;
wherein the CO2 gassing system ( 28 ) comprises:
a CO2 gassing line ( 30 ) connected to the gas outflow device ( 18 ) for supplying the aquarium ( 12 ) with the CO2 gas generated in the aquarium pressurized gas vessel ( 10 ),
wherein the CO2 gassing line ( 30 ) is configured to be submerged into the aquarium ( 12 ) at its end remote from the gas outflow means ( 18 ).
15. A CO2 gassing system ( 28 ) according to claim 14 , wherein the CO2 gassing line ( 30 ) comprises a CO2 diffuser ( 32 ) at its end remote from the gas outflow device ( 18 ), wherein the CO2 diffuser ( 32 ) is operable with a flow resistance of 0.3 bar to 0.6 bar, both inclusive, as an overpressure relative to an ambient pressure.
16. The aquarium pressurized gas vessel according to claim 7 , further comprising a rotary closing mechanism ( 24 ).