Non-fragmenting, non-explosive actuating valve mechanism for fir

Details Non-fragmenting, non-explosive actuating valve mechanism for fir Non-fragmenting, non-explosive actuating valve mechanism for fir

1998-07-30

1999-12-28

Kashnikow, Andres

Fire extinguishers

Special applications

Condition responsive control

169 26, 222 54, 222399, A62C 3711

Patent

active

060068426

ABSTRACT:
Hazard suppression apparatus (10) is provided with a container (12) of suppression fluid and a non-explosive, pressurized gas-operated actuator assembly (16). The assembly (16) includes an actuator body (32) and first and second spaced apart rupture discs (36, 38) defining a zone (43) therebetween; the first disc (36) is preferably of bulged, scored configuration, whereas the second disc (38) is flat and has a series of vent openings (52) therethrough. A perforate, bar-type support (34) is positioned adjacent the second disc (38) and remote from the zone (43). A container (18) of high pressure actuating fluid is operatively coupled to the body (32) via a coupling unit (56) having an elongated, tubular nipple (58) equipped with a third rupture disc (62). A valve (70), adapted for connection with a hazard sensor is interposed between the container (18) and the coupling unit (56). In use, when a hazard is detected the solenoid valve (70) opens and a charge of high pressure actuating gas is delivered to the interdisc zone (43) by rupture of the third disc (62). This causes rapid rupture of the first disc (36) while the support (34) prevents premature opening of the second disc (36). After the first disc (36) ruptures, the pressure differential across second disc (38) causes it to rupture, thereby venting the contents of container (12) to the protected area.

REFERENCES:
patent: 4126184 (1978-11-01), Hinrichs
patent: 5069291 (1991-12-01), O'Connell

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