Pellet burning stove
US5137012A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Apr 5, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24C3/006
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A pellet burning stove includes a firebox defining a combustion chamber, a pellet burner located within the firebox, a feed system for moving combustible pellets to the pellet burner and an ash pan for receiving ashes from the pellet burner. The pellet burner includes a horizontal surface having an elongated combustion zone defined by a plurality of primary air openings in the burner surface, and a feed surface adjacent to the combustion zone. The feed system moves a thin layer of combustible pellets across the feed surface into the combustion zone. An air plenum surrounding the feed surface of the pellet burner supplies combustion air upwardly through the primary air opening and the layer of combustible pellets. The air plenum maintains the pellets relatively cool until they reach the combustion zone. Ashes drop off an edge of the burner surface into an ash pan. An artificial log set and a log support member fabricated of refractory fiber material define a secondary combustion cavity above the pellet burner. Secondary air is supplied through the air plenum of the pellet burner and from an air wash system that maintains a viewing window clean during operation. The feed system typic…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.