Examples are disclosed that relate to grills and methods of controlling airflow into a grill. In one example, a grill comprises a cover comprising a grilling surface at a first end and a plurality of vents at a second end opposite to the first end. The grill further comprises a circular base configured to seat the second end of the cover. The circular base comprises a planar surface and a plurality of protrusions extending upwardly from the planar surface. The cover is rotatable relative to the circular base when seated on the circular base, and the protrusions are configured to selectively block and expose the plurality of vents in the cover upon rotation of the cover.

A system for a forced air flow into a kamado-style cooker comprises a control unit and an adapter defining an airflow duct with an entrance aperture and an exit aperture. The adapter is configured to removably mount over a lower damper port in a kamado-style cooker such that the exit aperture is aligned with the lower damper port. The control unit comprises an electric fan, one or more sensor input ports, and an airflow exit duct. The control unit is configured to separably mate with the adapter such that the airflow exit duct of the control unit is received by the entrance aperture of the adapter. Advantageously, a forced air flow generated by the electric fan, in response to a temperature signal input, passes out of the control unit, through the adapter, and into a body portion of the kamado-style cooker to encourage, facilitate and manage combustion within the cooker.

Disclosed is a particle heating landscape furnace, which includes a combustion device. The combustion device includes a vertically arranged cover pipe, a grid and a combustion assembly. The combustion assembly has a feed chamber, a flame outlet and a flame outlet opposite to the flame outlet. A feed chamber is arranged obliquely, the flame outlet and the discharge port are both connected with the feed chamber, and the cover pipe is arranged on a periphery of the flame outlet, the grid is arranged on an outer side of the discharge port.

Combustion appliances for providing heat for cooking meats and other foods are provided. The appliances are self-stoking, in that they do not need to be repeatedly re-filled with more fuel periodically, such as during an 18-hour slow cook procedure. A venturi assembly is provided which consists of a venturi duct and baffle, which creates a higher flow, lower pressure region within the venturi assembly, which gases mix with spent combustion gases to provide a more uniform temperature output.

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.

Systems and methods of a pellet-fired heating include a system having a combustion chamber in which combustion gas is generated from fuel pellets. The combustion chamber includes a fuel inlet for receiving fuel pellets into the combustion chamber, an air inlet for receiving air into the combustion chamber, and a combustion gas outlet for discharging combustion gas from the combustion chamber. The system further includes a first radiator extending into a space to be heated having an internal passage in fluid communication with the combustion chamber, via the combustion gas outlet, and one or more discharge outlets for discharging the combustion gas from the internal passage into the space. A blower of the system is configured to push air into the combustion chamber via the air inlet and push the combustion gas from the combustion chamber into the internal passage of the first radiator.

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.

A fire display fire pit for burning pelletized fuel and associated components and methods. The fire display pit can include a conveyor for moving pelletized fuel from a hopper to a burn chamber. The fire pit may be configured to produce flames in a vortex pattern, such as inside a flame tower.

A pellet stove includes: a furnace; a burner disposed in the furnace, a top of the burner being open; and a feed opening provided at a first sidewall of the burner. A through port for air intake and ash falling is provided at an underside of the burner. A grate supporting pellet fuel is provided above the through port. Auxiliary supports for sustaining bottom fire are disposed under the grate. The auxiliary supports are arranged higher than the through port, and the auxiliary supports are located at a side below the feed opening and cover an area not exceeding 1/2 of the area covered by the grate.

A cooking system having a pellet fueled cooking chamber, a fire chamber held in a fixed relationship with respect to the cooking chamber, and a user adjustable port that selectively allows fluid communication from the fire chamber to the cooking chamber.