Variable high efficiency gas burning fireplace
US5218953A · kind A · utility
Inventors
Key dates
| Filing date | Jan 6, 1992 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Jan 6, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24C3/006
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A standard prefabricated direct vented fireplace is designed for mass production on an assembly line where it is fitted with a plurality of different side walls or doors and optional heat exchangers for effecting different thermal efficiencies. The fireplace is factory adjusted for optimum burner efficiency under standard installation conditions. An induced draft fan/blower is installed in the path of the exhaust gasses and is provided with an in field adjustable variable speed control to overcome exceptionally high draft loss or long intake or exhaust passageways and to again optimize the burner efficiency after field installation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.