Compact fire-extinguishing system with high-pressure foam proportioning system
US9149671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2011 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Jul 5, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C25/00
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A compact, stand-alone fire-extinguishing system for use with a water source is disclosed. The fire-extinguishing system can include an engine, a pump, a foam tank, a flow meter, and a foamant adjustment valve. The flow meter can be a variable area flow meter and indicate an instantaneous concentration of a water-foamant solution. The foamant adjustment valve can be a needle valve. A head injector can be coupled to the pump. The head injector provides foamant to be mixed with water inside the pump to create a water-foamant solution. The fire-extinguishing system may also include an inlet mixing valve assembly and an unloader valve to recirculate the water-foamant solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.