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.

The present disclosure is directed to a burner assembly for generating a heat source. The burner assembly may include a combustion plate having a first surface and a second surface. The combustion plate may include a first plurality of holes extending from the first surface to the second surface arranged in a first circle and a second plurality of holes extending from the first surface to the second surface arranged in a second circle. The first circle and second circle may be arranged in concentric circles. The burner assembly may further be configured to have at least one of the holes having a longitudinal axis extending at a first acute angle from a plane of the combustion plate. The burner assembly may further be configured to have at least one of the holes having the longitudinal axis extending at a second acute angle from a tangent line of one of the concentric circles on the plane of the combustion plate.

The present disclosure is directed to a burner assembly for generating a heat source. The burner assembly may include a combustion plate having a first surface and a second surface. The combustion plate may include a first plurality of holes extending from the first surface to the second surface arranged in a first circle and a second plurality of holes extending from the first surface to the second surface arranged in a second circle. The first circle and second circle may be arranged in concentric circles. The burner assembly may further be configured to have at least one of the holes having a longitudinal axis extending at a first acute angle from a plane of the combustion plate. The burner assembly may further be configured to have at least one of the holes having the longitudinal axis extending at a second acute angle from a tangent line of one of the concentric circles on the plane of the combustion plate.

Disclosed is a combustion apparatus for both firewood and pellet fuel comprising: a combustion chamber in which wood fuel including firewood or a pellet is stacked; an air supply unit provided with an air supply pipe and a gap-maintaining member and including a nozzle connected to the air supply pipe and configured to spray air toward the wood fuel in a side direction thereof; and an operating unit configured to force the gap-maintaining member to come into contact with one side of the wood fuel to continuously maintain a constant gap between the nozzle and the wood fuel during combustion.

Disclosed is a combustion apparatus for both firewood and pellet fuel comprising: a combustion chamber in which wood fuel including firewood or a pellet is stacked; an air supply unit provided with an air supply pipe and a gap-maintaining member and including a nozzle connected to the air supply pipe and configured to spray air toward the wood fuel in a side direction thereof; and an operating unit configured to force the gap-maintaining member to come into contact with one side of the wood fuel to continuously maintain a constant gap between the nozzle and the wood fuel during combustion.

A small stove assorted with smokeless combustion of combustible solids/semisolids, a stove core and a shape of briquette are to ensure that a cylindrical briquette stack is quickly ignited in a smokeless state. A section A stove core inner ring and a flame concentrator are made of a selected high-whiteness aluminum silicate fiber with superior thermal insulation/resistance effects, and are processed for, e.g., blocking the micropores inner circumferential surface, and a stove core outer ring is made of cheaper foam glass, foam ceramic or calcium silicate modules. An underlying briquette with a concave top is designed to enable an easy, convenient and fast alignment of vent holes. The overall cross-sectional area of the vent holes is expanded by 30%-50% as compared with the area of the anthracite briquettes with the same diameter, and the inner ring vent holes are mainly expanded.

A combustor includes a combustion chamber having a grate provided therein and a combustion space formed above the grate; a fuel supply part downwardly connected to a center part of the grate so as to supply fuel to an upper part of the grate; an air supply part connected to a side part of the combustion chamber so as to be slanted on a horizontal plane, thereby supplying combustion air; a guide member disposed to protrude toward the inside of the combustion space from an inlet through which the combustion air flows into the combustion space, and opened downwardly so as to guide the combustion air; and protruding guide lines having a screw line shape and extending to be slanted downwardly on at least one of the respective surfaces, which face each other, of the guide member and the inner wall of the combustion chamber.

A flow-directing insert for a heating device having an evaporator burner, wherein: the evaporator burner has a fan chamber or combustion air pre-chamber, an evaporator holder and a combustion chamber, the evaporator holder has a base wall and a circumferential wall with at least two combustion air passage openings to direct combustion air from the fan chamber or combustion air pre-chamber initially along an exterior of the evaporator holder through the combustion air passage openings into the combustion chamber, the flow-directing insert comprises at least a first region for positioning over at least one of the combustion air passage openings and a second region for fixing in the fan chamber or combustion air pre-chamber of the evaporator burner, the first region being in the shape of a tongue.

The disclosed technology includes a device for extending the turndown ratio of a gas-fired burner system. The device can comprise a variable area device configured reduce the amount of fuel and air passed to the burner during low output conditions by adjusting the cross-sectional area of the passage between the blower and the burner. The variable area device can be controlled by an actuator that adjusts the position of the variable area device. The actuator can be manually controlled, mechanically controlled, or electronically controlled.

The disclosed technology includes a device for extending the turndown ratio of a gas-fired burner system. The device can comprise a variable area device configured reduce the amount of fuel and air passed to the burner during low output conditions by adjusting the cross-sectional area of the passage between the blower and the burner. The variable area device can be controlled by an actuator that adjusts the position of the variable area device. The actuator can be manually controlled, mechanically controlled, or electronically controlled.