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.

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 burner assembly for an oven appliance, the oven appliance defining a vertical direction, a lateral direction, and a transverse direction and including a cooking chamber, the burner assembly including a gas burner provided in the cooking chamber, the gas burner defining a clean air port, and a shutter housing attached to a first end of the gas burner, the shutter housing defining an air inlet in fluid communication with the clean air port, and wherein the air inlet is positioned below the clean air port along the vertical direction.

A burner assembly for an oven appliance, the oven appliance defining a vertical direction, a lateral direction, and a transverse direction and including a cooking chamber, the burner assembly including a gas burner provided in the cooking chamber, the gas burner defining a clean air port, and a shutter housing attached to a first end of the gas burner, the shutter housing defining an air inlet in fluid communication with the clean air port, and wherein the air inlet is positioned below the clean air port along the vertical direction.

An object of the present invention is to provide an oxygen-enriched burner which can change any oscillation period and uniformly heat an object to be heated with an excellent heat transfer efficiency when heating the object to be heated while moving the flame with self-induced oscillation, and a method for heating using an oxygen enriched burner, and the present invention provides an oxygen-enriched burner including a center fluid ejection outlet and a peripheral fluid ejection outlet provided around the center fluid ejection outlet, a pair of openings are provided at opposite positions on side walls of a fluid ejection flow path of the center fluid ejection outlet, a pair of the openings are communicated with each other by a communication portion, an interval between a pair of side walls downstream of the openings in the fluid ejection flow path is gradually expanded toward the downstream side, and the communication portion includes a first communication pipe and the second communication pipe each having a first end connected to a pair of the openings, and at least one communication element connected to second ends of the first communication pipe and the second communication pipe and communicating the first communication pipe and the second communication pipe.

An object of the present invention is to provide an oxygen-enriched burner which can change any oscillation period and uniformly heat an object to be heated with an excellent heat transfer efficiency when heating the object to be heated while moving the flame with self-induced oscillation, and a method for heating using an oxygen enriched burner, and the present invention provides an oxygen-enriched burner including a center fluid ejection outlet and a peripheral fluid ejection outlet provided around the center fluid ejection outlet, a pair of openings are provided at opposite positions on side walls of a fluid ejection flow path of the center fluid ejection outlet, a pair of the openings are communicated with each other by a communication portion, an interval between a pair of side walls downstream of the openings in the fluid ejection flow path is gradually expanded toward the downstream side, and the communication portion includes a first communication pipe and the second communication pipe each having a first end connected to a pair of the openings, and at least one communication element connected to second ends of the first communication pipe and the second communication pipe and communicating the first communication pipe and the second communication pipe.

A heat source device including a sheet-metal burner body (30), a fan casing (40) connected to the burner body (30), an annular packing (90) connecting a burner-side connection end surface (340) with a fan-side connection end surface (410) in an airtight state, a sheet-metal connection part (80) disposed between the burner-side connection end surface (340) and the fan-side connection end surface (410), wherein the connection part has an opening (85) and a packing storage portion (84) storing the annular packing (90), wherein the opening (85) is provided in such a manner that an opening edge is positioned outside of those of an inlet port (35) and a blowout port (44) in a state where the connection part (80) is disposed between the burner-side connection end surface (340) and the fan-side connection end surface (410).

A heat source device including a sheet-metal burner body (30), a fan casing (40) connected to the burner body (30), an annular packing (90) connecting a burner-side connection end surface (340) with a fan-side connection end surface (410) in an airtight state, a sheet-metal connection part (80) disposed between the burner-side connection end surface (340) and the fan-side connection end surface (410), wherein the connection part has an opening (85) and a packing storage portion (84) storing the annular packing (90), wherein the opening (85) is provided in such a manner that an opening edge is positioned outside of those of an inlet port (35) and a blowout port (44) in a state where the connection part (80) is disposed between the burner-side connection end surface (340) and the fan-side connection end surface (410).

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.

In one aspect there is provided a gas flare comprising a hollow cylindrical member having a bottom end, a top end, a discharge end at said top end, and defining an interior volume having a mixing region. The gas flare further comprises a gas inlet to receive waste fluids, an air inlet to receive and direct air into the interior volume, and an internal riser having an outlet. The mixing region is located above the air inlet and below the discharge end. The internal riser fluidly and sealably connects to the gas inlet and directs all waste fluids from the gas inlet, out through the outlet, into the mixing region.