Method and device for the autonomous production, preparation, and supply of breathing gas to divers at extreme depths

A system for the autonomous production, enrichment and supply of breathing gas to a diver comprising:

• two pressurized containers connected to one another such that fluid is able to flow between the two pressurized containers, the two pressurized containers comprise a closed circuit storage system;
• a breathing gas comprising inert gas and oxygen contained in the two pressurized containers;
• a low pressure membrane pump for transferring a portion breathing gas after the portion of the breathing gas is exhaled by the diver;
• a carbon dioxide absorption filter for receiving the exhaled breathing gas by the low pressure membrane pump and for removing a portion of carbon dioxide from the breathing gas exhaled by the diver by the carbon dioxide filter;
• means for delivering a supply of pure oxygen to the system for enriching the filtered breathing gas exhaled by the diver, wherein the supply of the pure oxygen added is based on a constant dosage according to the admissible partial oxygen pressure for the respective depth;
• a compressor for compressing the enriched breathing gas into a less full one of the two pressurized containers at a pressure of between 220 and 450 bar;
• a flow control means for reversing the flow of the breathing gas when one of the at least two pressurized tanks becomes full such that the continuously conveyed breathing gas is transferred to the less full one of the at least two pressurized containers.

A method for the enrichment and supply of breathing gas to a diver, the method comprising the steps of:

• conveying a breathing gas mixture, which comprises an inert gas and oxygen, from one pressurized container to a breathing area;
• conveying exhaled breathing gas mixture to a carbon dioxide absorption filter by means of a low pressure membrane pump;
• enriching the exhaled breathing gas mixture with oxygen, based on constant dosage according to an admissible partial oxygen pressure for the respective depth;
• filtering the enriched exhaled breathing gas mixture using the the carbon dioxide filter to remove a portion of carbon dioxide from the enriched exhaled breathing gas mixture;
• conveying a first portion of the filtered breathing gas mixture to the breathing area;
• conveying a second portion of the filtered breathing gas mixture to another pressurized container and storing the second portion in the another pressurized containers at a pressure of between 220 and 450 bar;
• and
• reversing the flow of the continuously conveyed breathing gas when the another pressurized tank becomes full such that the breathing gas mixture is transferred to the less full one of the two pressurized containers.

A method for the enrichment and supply of breathing gas to a diver, the method comprising the steps of:

• conveying a breathing gas mixture, which comprises an inert gas and oxygen, from one pressurized container to a breathing area;
• conveying exhaled breathing gas mixture to a carbon dioxide absorption filter by means of a low pressure membrane pump;
• filtering the exhaled breathing gas mixture using the the carbon dioxide filter to remove a portion of carbon dioxide from the breathing gas mixture exhaled by the diver;
• conveying a first portion of the filtered breathing gas mixture to the breathing area;
• enriching a second portion of the filtered breathing gas mixture with oxygen, based on constant dosage according to an admissible partial oxygen pressure for the respective depth;
• conveying the enriched second portion of the breathing gas mixture to another pressurized containers and storing the enriched second portion in the another pressurized containers at a pressure of between 220 and 450 bar;
• and
• reversing the flow of the continuously conveyed breathing gas when the another pressurized tank becomes full such that the breathing gas mixture is transferred to the less full one of the two pressurized containers.

A system for the enrichment and supply of breathing gas to a diver, the system comprising:

• a first pressurized container connected to a second pressurized container such that fluid is able to flow between the two pressurized containers, the two pressurized containers comprise a closed circuit storage system;
• a first conduit connecting the first pressurized container to a valve;
• a second conduit connecting the second pressurized container to the valve;
• a third conduit connecting the valve to a breathing area;
• a fourth conduit for conveying exhaled breathing gas;
• a low pressure membrane pump for transferring the exhaled breathing gas through the fourth conduit;
• a fifth conduit for delivering a supply of oxygen to the fourth conduit for enriching the breathing gas exhaled by the diver;
• means for controlling the supply of the oxygen based on a constant dosage according to the admissible partial oxygen pressure for the respective depth;
• a carbon dioxide absorption filter connected to the fourth conduit for receiving the exhaled breathing gas and for removing a portion of carbon dioxide from the breathing gas exhaled by the diver;
• a sixth conduit for delivering a first portion of the enriched and filtered breathing gas to the breathing area;
• a compressor for compressing a second portion of the enriched and filtered breathing gas into the second pressurized container at a pressure of between 220 and 450 bar;
• a seventh conduit for delivering the second portion of the enriched and filtered breathing gas to the compressor;
• a flow control means for reversing the flow of the breathing gas when one of the at least two pressurized tanks becomes full such that the breathing gas is transferred to the less full one of the two pressurized containers.

A system for the enrichment and supply of breathing gas to a diver, the system comprising:

• a first pressurized container connected to a second pressurized container such that fluid is able to flow between the two pressurized containers, the two pressurized containers comprise a closed circuit storage system;
• a first conduit connecting the first pressurized container to a valve;
• a second conduct connecting the second pressurized container to the valve;
• a third conduit connecting the valve to a breathing area;
• a fourth conduit for conveying exhaled breathing gas;
• a low pressure membrane pump for transferring the breathing gas through the fourth conduit;
• a carbon dioxide absorption filter connected to the fourth conduit for receiving the exhaled breathing gas and for removing a portion of carbon dioxide from the breathing gas exhaled by the diver;
• a sixth conduit for delivering a first portion of the filtered breathing gas to the breathing area;
• a compressor for compressing a second portion of the filtered breathing gas into the second pressurized container at a pressure of between 220 and 450 bar;
• a seventh conduit for delivering the second portion of the filtered breathing gas to the compressor;
• a fifth conduit for delivering a supply of oxygen to the seventh conduit for enriching the filtered breathing gas;
• means for controlling the supply of the oxygen based on a constant dosage according to the admissible partial oxygen pressure for the respective depth;
• a flow control means for reversing the flow of the breathing gas when one of the at least two pressurized tanks becomes full such that the breathing gas is transferred to the less full one of the two pressurized containers.