Fire and explosion suppression
US7153446B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Mar 28, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62D1/0057
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A fire or explosion suppression system comprises a source (30) of a liquid suppressant under pressure, and a source (32) of an inert gas under pressure. The liquid suppressant is a chemical substance having a low environmental impact, with a short atmospheric lifetime of less than 30 days. The inert gas may be nitrogen, carbon dioxide, argon, neon or helium or mixtures of any two or more of them. The suppressant and the inert gas are fed under pressure to an output unit (34) comprising a mixing chamber in which the liquid and the gas impinge to produce a mist of the liquid suppressant of very small droplet size which is entrained in the pressurised gas together with vapour from the liquid, the so-entrained mist and vapour and the gas being discharged by a nozzle (44) into an area to be protected. The mist and vapour are therefore carried by the entraining and transporting high pressure gas into regions of the areas to be protected, enabling a total flooding capability. The inert gas also performs a fire or explosion suppressing capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.