Fire suppression system with freeze protection
US8336636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2007 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jul 23, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C99/0072
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A water and inert gas fire suppression system (10), and method for extinguishing a fire in a protected space are provided with a simple and inexpensive freeze protection mechanism. To prevent the water, or other liquid fire extinguishing agent, entrained in the inert gas flow from freezing during transport through the inert gas distribution network (15, 15a, 15b, 17, 19) a secondary liquid is introduced into the inert gas flow and then removed from the inert gas flow upstream of the discharge of the two-phase water and inert gas flow into the space being protected. The inert gas is heated by means of the thermal inertia (TI) of the secondary liquid, which may be excess amount of water or an amount of another liquid having a thermal inertia (TI) at least equal to that of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.