Fire extinguishers – Special applications – Condition responsive control
Patent
1989-01-18
1989-10-10
Basinger, Sherman D.
Fire extinguishers
Special applications
Condition responsive control
169 65, 169 70, 169 17, 169 20, 239468, A62C 3712
Patent
active
048725137
ABSTRACT:
A chimney fire extinguisher includes a small diameter narrow conduit removably insertable through a small aperture in a chimney wall. A source of fire extinguishate under pressure is coupled to one end of the conduit for delivery of the extinguishate through the conduit. A sprinkler head is fixed to the opposite end of the conduit for insertion through the chimney wall aperture. The sprinkler head comprises an enclosed chamber, a restrictor for restricting the flow of extinguishate from the conduit into the chamber, a small orifice for spraying extinguishate from the chamber into the chimney and a fusible seal for normally sealing the sprinkler head orifice. In an alternate embodiment the sprinkler head orifice is not sealed but is only loosely covered. A temperature sensor is provided for sensing the temperature within the chimney. A valve which is opened in response to the detection of chimney temperatures in excess of about 1200.degree. F. controls the flow of extinguishate from the pressurized source to the sprinkler head.
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Finnigan Wilfred J.
Gardner Stanley D.
Basinger Sherman D.
Blake William A.
Finnigan Wilfred J.
Leavitt John J.
Salmon Paul E.
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