Pellet burner appliances and burners therefor
US5070798A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Aug 31, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23B3/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A pellet burning appliance with an improved burner is disclosed. This improved burner includes an open ended retort in communication with a feed auger at the inlet end opposite the open end. The feed auger delivers solid fuel pellets through the inlet end which results in underfeeding action and cross-flow of the combustion bed. An air hole arrangement introduces primary and secondary air for highly efficient burning. The floor of the retort is flat, and colinear with the bottom of the auger tube. The burner is inclined within the appliance at approximately 22.5.degree. from the horizontal. This design promotes efficient burning as the constantly fed fuel spreads evenly whereby it combusts over substantially the entire length of the retort. The feeding action continually pushes clinkers and other combustion inhibiting particulates, in an unobstructed manner, off the retort's terminal end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.