Three wall forced air heating unit
US4301783A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1979 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | Jan 4, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24B7/025
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A forced air heating unit having a first U-shaped air channel with inlet vents adjacent the front, and a second U-shaped forced air channel interior said first forced air channel communicating with the first forced air channel via an opening in the common rear wall and having exit vents adjacent the front. A fan is mounted to the rear wall having the motor exterior the forced air channels with an impeller in the common rear wall opening. A conical deflector extends from the interior wall of the second forced air channel towards said rear wall opening. A refractory floor in the firebox includes front, side and rear vertical portions with top surfaces inclined towards the respective wall. The rear and side vertical portions exceed the height of a grate or andirons positioned on the refractory floor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.