Direct-vented gas fireplace
US4793322A · kind A · utility
Inventors
Key dates
| Filing date | Nov 6, 1986 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Nov 6, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23L17/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A zero clearance fireplace of the type to be installed inside of a building against or near an outside wall is provided. The box shaped fireplace is provided with four substantially vertical walls, a top wall and a bottom wall. The bottom wall comprises an inner plenum and an outer plenum below the combustion chamber. The rear wall comprises an outer plenum connected to the bottom plenum of the bottom wall, a middle plenum connected to a source of fresh air and connected to the inner plenum of the bottom wall and an inner plenum which is connected to a horizontal exhaust pipe which is inserted through the outside wall and is connected to the combustion chamber through a baffle arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.