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 burning stove includes a stove body, a front seat, a door, a rear seat, a top cover, and a baffle. The baffle divides the stove body into an air inlet chamber and a combustion chamber. The door is provided with first air inlet holes and second air inlet holes. The baffle is provided with first air holes. The baffle is provided with an air guide port and an air guide face. First partial air flows backward in the air inlet chamber, flows through the air guide port and the air guide face, and flows upward into the combustion chamber, and second partial air in the air inlet chamber flows through the first air holes into the combustion chamber. The first partial air and the second partial air form a vortex air flow in the combustion chamber.

A smoker configured to infuse smoke into flavor and/or taste of a beverage or food includes a body member having a through bore extending from a first end of the body member to an opposite second end of the body member in a first direction and an insert configured to be received in the through bore at the first end and retained by the through bore at a position between the first end and the second end. The through bore and the insert are configured to define a chamber for receiving a combustible material between the insert and the first end, the through bore is configured to permit a flow of smoke from the combustible material out the through bore at the second end of the body member, and the second end of the body member is configured to rest on a rim of a container to block the flow of air from the container where a surface of the second end of the body member contacts the rim.

An organic matter degradation device has a furnace and a gas supply device. The furnace has a furnace chamber. The gas supply device has a gas supply tube and a negative ion generating device. First branch tubes are disposed on the gas supply tube axially, and second branch tubes are disposed on the first branch tube. A first pipeline of the second branch tube is disposed horizontally, the first pipeline is communicative to the first branch tube via the second pipeline, and the negative ion generating device is installed on the first pipeline. The negative ions generated by the negative ion generating device can pass the first pipeline and directly enter the furnace chamber, which decreases the resisting force applied to the negative ions, and increases the negative ion flow kinetic energy.

The invention is a novel Top-Lit-Updraft cook stove with internal forced primary and secondary air, designed to burn biomass. The cook stove is specifically designed to cleanly burn biomass. The stoves design innovations include a cylinder-within-cylinder design to provide heated, forced secondary to the burner area right below the burner. The burner design addresses limitations in previous cookstove burner design by implementing a bluff body design to direct syngas to the secondary air jets, improving mixing and combustion of volatile gases.

A solid fuel combustion device includes: a fuel supply device including a firewood feed pipe or another fuel supplier; a primary combustion chamber coupled to the fuel supply device; a secondary combustion chamber including a wall formed of a fireproof material and having a structure in which a space is formed at a side of the combustion gas outlet of the primary combustion chamber to induce primary combustion gas to be secondarily expanded and combusted; and an air supply system including at least one air supply device in an entire combustion path formed in the primary combustion chamber and the secondary combustion chamber.

A burning stove includes a stove body, a front seat, a door, a rear seat, a top cover, and a baffle. The baffle divides the stove body into an air inlet chamber and a combustion chamber. The door is provided with first air inlet holes and second air inlet holes. The baffle is provided with first air holes. The baffle is provided with an air guide port and an air guide face. First partial air flows backward in the air inlet chamber, flows through the air guide port and the air guide face, and flows upward into the combustion chamber, and second partial air in the air inlet chamber flows through the first air holes into the combustion chamber. The first partial air and the second partial air form a vortex air flow in the combustion chamber.

A portable camping stove/fire pit has a cylindrical combustion chamber having a bottom member and circularly configured vertical side wall which extends upwardly from the bottom member and terminates in a top edge. The circularly configured side wall has a plurality of spaced apart vertically oriented slots, where each of the slots extends from the exterior of the combustion chamber into the interior. The circularly configured side wall has a plurality of vertically aligned louver members disposed in a spiraling configuration about the combustion chamber, where each louver is disposed tangentially to a respective vertical slot. During combustion within the combustion chamber, a flow of air is drawn past the plurality of vertically aligned louver members, through the slots into the interior, thereby forming a vortex as combustion occurs within the combustion chamber.

A portable camping stove/fire pit has a cylindrical combustion chamber having a bottom member and circularly configured vertical side wall which extends upwardly from the bottom member and terminates in a top edge. The circularly configured side wall has a plurality of spaced apart vertically oriented slots, where each of the slots extends from the exterior of the combustion chamber into the interior. The circularly configured side wall has a plurality of vertically aligned louver members disposed in a spiraling configuration about the combustion chamber, where each louver is disposed tangentially to a respective vertical slot. During combustion within the combustion chamber, a flow of air is drawn past the plurality of vertically aligned louver members, through the slots into the interior, thereby forming a vortex as combustion occurs within the combustion chamber.

Embodiments of the present disclosure relate to a selectively-closable hatch for automatically preventing airflow through the blower inlet of a fuel-burning grill. The hatch has a first, normal, resting closed configuration which prevents the flow of air through the inlet and into the cooking chamber of the grill, and a second, open configuration which is obtained when a fan is engaged to create a forceful airflow through the inlet path. The force of air pushed against the hatch pushes the hatch open, both when the fan is disengaged or falls below a minimum strength, the hatch returns to the closed configuration and prevents air from being drawn or otherwise flowing through the inlet path into the cooking chamber of the grill.