Title:
DRY ACCELERATOR FOR SPRINKLER SYSTEM
Document Type and Number:
WIPO Patent Application WO2001068188
Kind Code:
A3
Abstract:
A dry accelerator (1) for use in a dry, pressurized-gas, liquid sprinkler fire control and suppression system, that is response-sensitive to a decay in gas pressure in the system, caused by a system-triggering event, is disclosed. The dry accelerator is actuated to in turn accelerate the actuation of at least one other device in the system that controls the release of a liquid fire-extinguent. The dry accelerator generally includes a housing with two gas chambers (3, 4) therein, separated by a diaphragm. A rapid decline in system gas pressure causes a disequilibrium in pressure between the two chambers causing the device to become actuated. System response time is shorter than if the dry accelerator were not present, because the system pressure does not have to decline to as low a level before a system check valve is triggered to make the liquid extinguent available at the sprinkler heads. The dry accelerator is response-sensitive to a drop in system pressure of less than about 5 psi from the initial system pressure; and it is utilizable in all types of systems, regardless of the initial system operating gas pressure.
Inventors:
REILLY JOSEPH WILLIAM (US)
Application Number:
PCT/US2001/008760
Publication Date:
May 30, 2002
Filing Date:
March 16, 2001
Export Citation:
Assignee:
VICTAULIC CO OF AMERICA (US)
REILLY JOSEPH WILLIAM (US)
REILLY JOSEPH WILLIAM (US)
International Classes:
A62C35/66; (IPC1-7): A62C35/66
Domestic Patent References:
| WO1999059678A2 | 1999-11-25 |
Foreign References:
| US3727878A | 1973-04-17 | |||
| DE3940446A1 | 1990-06-21 | |||
| US4570719A | 1986-02-18 | |||
| US3785440A | 1974-01-15 | |||
| FR2334032A1 | 1977-07-01 |
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