Common filtration unit for building makeup air and emergency exhaust
US7331854B2 · kind B2 · utility
1Cited by
11References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2004 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Jan 28, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2221/44
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A building protection system comprises a filtration unit, an air handling unit, an emergency exhaust subsystem, a first damper positioned between the filtration unit and the air handling unit, and a second damper positioned between the emergency exhaust subsystem and the filtration unit. The first damper is selectively opened and the second damper is selectively closed to filter outside air as it enters a building, and the first damper is selectively closed and the second damper is selectively opened to filter inside air as it is exhausted from, the building.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.