Apparatus for heating breathing gas for divers

Details Apparatus for heating breathing gas for divers Apparatus for heating breathing gas for divers

A - Human Necessities

62

B

309/50

A62B 9/00 (2006.01) B63C 11/28 (2006.01) H05B 3/00 (2006.01)

Patent

CA 1144968

ABSTRACT A gas heating apparatus for divers comprises an electrical heating cartridge (1) which is replacably inserted with close fit into a gilled pipe (2) having an external helical flange (3). The pipe (2) is sur- rounded by a mantle (4) which is connected to a hood (8) with an outlet nozzle (9). The hood (8) and the pipe (2) is with a substantial play inserted into a pressure vessel (5,6,10). The vessel has an end cap (6) through which the hood nozzle (9) extends. The end cap (6) has also an inlet nozzle (7) for cold gas, which thus can flow through the gap (12) between the mantle (4) and the vessel wall (5) to the pipe end opposite the hood (8), and from there the gas flows in a helical path through a channel section defined by the flange (3) and the mantle (4) to the outlet nozzle (9) and is heated during passage along said path. The vessel also comprises an openable sealable compartment (19), wherein an electrical connection between the cartridge (1) and a power supply cable can be sealed from the ambient water.

352204

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