Overhead ventilation system incorporating a fixed blade diffuser with opposed pivoting blades for use with a cooking appliance
US6041772A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1998 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Nov 13, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24C15/20
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An overhead ventilation hood for use within a ventilation system of a conventional cooking appliance. The hood includes a housing with a planar base surface and a recessed interior arrayed in a downwardly facing manner which is defined by a first side, a second spaced apart side, a first interconnecting end and a second interconnecting end. Intake and exhaust openings are formed through the housing proximate the first and second sides. The ventilation system includes a first blower mounted in communication with a first length of ductwork extending to the intake opening to provide a stream of pressurized intake air and a second blower mounted in communication with a second length of ductwork extending from the exhaust opening to provide a stream of pressurized exhaust air. A supply plenum chamber is established along the first side of the housing interior and includes first and second planar shaped channeling walls and a planar shaped diffuser for regulating a flow of the stream of pressurized air into a central open interior of the housing. The diffuser includes fixed grid members and spaced apart and pivotal blade members to adjust an airflow through the plenum chamber. An exhaust…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.