A - Human Necessities – 62 – C
Patent
A - Human Necessities
62
C
A62C 31/02 (2006.01) A62C 13/22 (2006.01) A62C 35/02 (2006.01)
Patent
CA 2180078
A nozzle unit (4) for discharging and atomising a fire or explosion suppressant, comprises a rigid-walled cylindrical container (5) having a nozzle portion (20) at one end with radially directed discharge orifices (22). A barrier having rupturable discs (100,102) normally blocks the nozzle portion (20) from the interior (56) of the container. At the other end of the container, a piston (106) is positioned so as to be sealingly slidable along the container in response to pressure generated by a gas pressure generator (6). The moving piston (106) pressurises the suppressant agent within the hollow interior (56) until the rupturable discs (100, 102) burst. The suppressant agent is accelerated substantially instantaneously and discharged in atomised form through the discharge orifices (22). The gas pressure generator (6) may be a pyrotechnic gas generator. Some of the heated gas is diverted into direct contact with the suppressant immediately before it is discharged via a bore (104), so as to heat and vaporize the discharging suppressant.
Sears Richard Francis
Simpson Terence
Bereskin & Parr
Kidde Technologies Inc.
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