Ventless air scrubber assembly with multi-stage filters and hood enclosure with great entrapment units
US6344074B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2000 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Mar 9, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A ventless air scrubber assembly for use with a conventional cooking appliance situated within an interior location. A ventilation hood is arrayed in an overhanging manner above the cooking appliance and includes a recessed interior defined by a planar base surface and a plurality of interconnecting sides. The hood further includes an intake and an exhaust and a plurality of individual grease extraction units located within the hood in proximity to the exhaust. A filtration housing having an inlet and an outlet is located a specified distance from the hood and is interconnected to the hood exhaust by a first length of ductwork extending filtration housing inlet. A plurality of individual filters are arrayed between the inlet and an outlet in successive fashion. The filters include particulate entrapment filters and an odor removal filter. A second length of ductwork extends between the filtration housing outlet and an inlet of an exhaust fan. The exhaust fan draws a steady flow of hot air contaminated with airborne particles such as grease and smoke from the cooking appliance, across the grease extraction units and, subsequently, the filtration housing. A third length of ductwork e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.