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US 2026/0224922 A1Published application
Heat exchanger for closed-circuit rebreather
AssigneeCaeli Technologies Ltd
InventorsNir Bloch, Arie Kalo, Izhak Rabinovitz
Life of this patent
Estimating the term…
Abstract
The present invention relates to closed-circuit breathing system with an improved cooling system for prolonged use thereof.
Claims19
A closed-circuit rebreather (CCR) (200) comprising:
- a) a dismountable condensed oxygen cylinder (201) designed to provide oxygen;
- b) an oxygen regulator (202) attached to said oxygen cylinder (201) and designed to provide oxygen at a predefined pressure;
- c) a carbon dioxide (CO2) absorber (205) comprising one or more dismountable canisters (215) designed to hold a CO2 scrubber material;
- d) a counterlung (206) connected to said CO2 absorber (205) and designed to receive air exiting therefrom;
- and
- e) a mouthpiece connected to said counterlung (206) via an inlet tube (203) and to said CO2 absorber (205) via an outlet tube (204),
- wherein said CCR further comprises a cooling system (300) that comprises a cooling unit (310) comprising:
- (i) hot air inlets (311) connected to an exit of said CO2absorber (205) and designed to receive hot air passing through said CO2 absorber (205);
- (ii) cold air outlets (312) designed to pass cold air to said counterlung (206);
- and a millibar discharge-valve (313) at its bottom section designed to discharge liquid water outside the CCR.
7 more elements
A closed-circuit rebreather (CCR) (200) comprising:
- a) a dismountable condensed oxygen cylinder (201) designed to provide oxygen;
- b) an oxygen regulator (202) attached to said oxygen cylinder (201) and designed to provide oxygen at a predefined pressure;
- c) a carbon dioxide (CO2) absorber (205) comprising one or more dismountable canisters (215) designed to hold a CO2 scrubber material,
- d) a cooling system (300) connected to an exit of said CO2 absorber (205);
- e) a counterlung (206) connected to an exit of said cooling system (300) and designed to receive air exiting therefrom;
- f) a heatshield cover (207) positioned between said counterlung (206) and said CO2 absorber (205);
- and
- g) a mouthpiece connected to said counterlung (206) via an inlet tube (203) and to said CO2 absorber (205) via an outlet tube (204);
- wherein:
- said cooling system (300) comprises:
- (i) a cooling unit (310) that comprises hot air inlets (311) connected to an exit of said CO2 absorber (205) and designed to receive hot air passing through said CO2 absorber (205);
- and cold air outlets (312) designed to pass cold air to said counterlung (206);
- and a millibar discharge-valve (313) at its bottom section designed to discharge liquid water outside the CCR, wherein said cooling system (300) is attached to said CO2 absorber (205) for receiving hot air passing therethrough;
- and (ii) one or more fans or blowers;
- and
- said heatshield cover (207) is designed to direct airflow from said one or more fans or blowers over said cooling unit (310) and over said CO2 absorber (205).
13 more elements
Dependencies are inferred from the claim text.