Devices and methods for outdoor heating. A stove device includes a fuel system attached to a combustion chamber to deliver fuel from a hopper of the fuel system to the combustion chamber for combustion in a firepot assembly positioned inside the combustion chamber. A distance between a chute of the fuel system and the firepot assembly is adjustable to change an amount of fuel for combustion and thereby control temperature of combustion. The distance may be decreased to decrease the temperature and may be increased to increase the temperature

Devices and methods for outdoor heating. A stove device includes a fuel system attached to a combustion chamber to deliver fuel from a hopper of the fuel system to the combustion chamber for combustion in a firepot assembly positioned inside the combustion chamber. A distance between a chute of the fuel system and the firepot assembly is adjustable to change an amount of fuel for combustion and thereby control temperature of combustion. The distance may be decreased to decrease the temperature and may be increased to increase the temperature.

A combustion chamber has an inner wall defining an inner chamber. The inner wall is perforated to admit combustion air into the inner chamber. The combustion chamber has an outer wall defining an outer chamber. The outer wall is perforated to admit combustion air from a pressurized air plenum to the inner wall. The inner and outer wall are spaced apart such that air may flow between the inner and outer walls.

A biomass pellet combustion system includes a primary burn chamber, a coal burn chamber, and a gas burn chamber. The primary burn chamber is configured to receive pellets from a drop tube of the biomass pellet combustion system. The coal burn chamber is configured to receive coals from the primary burn chamber. The gas burn chamber is configured to receive combustible gases from both the primary burn chamber and the coal burn chamber, wherein a secondary combustion process converts secondary combustion air and the combustible gases into exhaust gases in the gas burn chamber.

A floor and an upright sidewall formed from two vertically coaxial components, each component having a floor baffle with a plurality of floor openings defined therein, each floor retained within a respective upright sidewall with a plurality of sidewall openings defined therein. The floor openings and the sidewall openings cooperate between the two coaxial components such that flow of gases through the floor and upright sidewall of the baffle structure is controlled by rotation of the two vertically coaxial components relative to one another.

A grill including an upper shell and a lower shell is provided. The lower shell defines an opening there-through, and the upper shell and the lower shell together define a cooking chamber. A pellet burner is adapted to fit in the opening in the lower shell. The pellet burner includes an air duct having a first end and a second end. The first end is positioned outside of the lower shell and the second end is positioned inside of the lower shell when the pellet burner is fitted in the opening in the lower shell. The pellet burner includes a fan positioned to blow air through the air duct and through the second end of the air duct, and a pellet box configured to hold a plurality of pellets. An auger moves the pellets to a position adjacent the second end of the air duct that contains a hot rod.

A gasification stove includes an upper housing including an upper hollow body and a dome section, and a lower housing including a lower hollow body that form a stove chamber when connected to each other. A separator for collecting a gas and flame generated from burning of the biomass is arranged in the stove chamber and includes a bowl section and a chimney section. The bowl section has a first set of holes, and an upper part of the chimney section has a second set of holes. The upper part of the chimney section is air-tightly attached to an edge of a chimney opening of the upper housing. At least some of the gas flows through the first set of holes and the second set of holes to enter into the chimney section so as to react with the flame or hot air in the chimney section to generate additional flame power.

A solid pellet fueled heater having a base unit with forced air blowers and a dual tube chimney structure is disclosed. The dual tube chimney structure may be used to warm incoming air for distribution around the heater. The pellet heater may also include a dual auger system and multi/high speed auger motor. The dual auger may include first and second auger blades mounted on a single auger shaft having blade pitches configured to convey solid fuel in opposite directions.

There is provided a wood pellet burner assembly for a wood pellet boiler, not shown. There is a fixed and easily removable fuel apertured grate mounted above and spaced apart from a base wall forming part of a main support enclosure. A movable scraper subassembly carrying an apertured flame tube is provided which can be moved in and out of the main support enclosure to perform a scraping action on the fixed fuel apertured grate to deliver ash and clinker which have not fallen through the grate during combustion off the grate out of the main support enclosure. This cleaning operation can be carried out at suitable preset time intervals.

Embodiments are directed to smoking food in an outdoor grill using a customized smoking routine. In one scenario, an electronic controller of an outdoor grill receives an input to initiate smoke generation according to a specified smoke generation pattern, including: adding a specified amount of combustible pellets to a combustion area within the outdoor grill, such that the combustible pellets begin to burn, measuring a current internal temperature of the outdoor grill and, if below a threshold value, adding a specified amount of additional combustible pellets to the combustion area sufficient to raise the temperature to another threshold value, allowing the internal temperature to cool a temperature below the first threshold value and, upon determining that the temperature of the outdoor grill has cooled below the first specified threshold value, adding additional combustible pellets to the combustion area sufficient to raise the temperature to at least the second threshold value.