An alternative-fuel gas orifice, a gas furnace configured to employ the same and a method of designing a gas orifice. In one embodiment, the gas orifice includes: (1) a body having an aperture extending therethrough and including: (1a) a metering neck having a cross-sectional area such that a given flow rate of a gas is established when the gas is delivered to the gas orifice at a given alternative-fuel delivery pressure and (1b) a diffuser having a cross-sectional area larger than the cross-sectional area of the metering neck and a length such that the gas achieves a substantially laminar flow before exiting the diffuser.

An alternative-fuel gas orifice, a gas furnace configured to employ the same and a method of designing a gas orifice. In one embodiment, the gas orifice includes: (1) a body having an aperture extending therethrough and including: (1a) a metering neck having a cross-sectional area such that a given flow rate of a gas is established when the gas is delivered to the gas orifice at a given alternative-fuel delivery pressure and (1b) a diffuser having a cross-sectional area larger than the cross-sectional area of the metering neck and a length such that the gas achieves a substantially laminar flow before exiting the diffuser.

A jet burner of the present disclosure basically includes a burner unit and an air blower disposed at a rear end of a burning chamber of the burner unit, wherein the burner unit is installed with a fuel bucket for storing fuel and the burning chamber having a tubular shape. Interior of the burning chamber is installed with a least one nozzle, at least one fuel pipe coupled to the fuel bucket is installed at each the nozzle, a front end of the burning chamber is installed with at least one jet pipe, and a pipe diameter of each the jet pipe is less than an inner diameter of the burning chamber. Under the reaction of the jet pipe, the burning stay time of the fuel in the interior of the burning chamber is increased, as to achieve the objective of increasing the fuel burning efficiency.

A jet burner of the present disclosure basically includes a burner unit and an air blower disposed at a rear end of a burning chamber of the burner unit, wherein the burner unit is installed with a fuel bucket for storing fuel and the burning chamber having a tubular shape. Interior of the burning chamber is installed with a least one nozzle, at least one fuel pipe coupled to the fuel bucket is installed at each the nozzle, a front end of the burning chamber is installed with at least one jet pipe, and a pipe diameter of each the jet pipe is less than an inner diameter of the burning chamber. Under the reaction of the jet pipe, the burning stay time of the fuel in the interior of the burning chamber is increased, as to achieve the objective of increasing the fuel burning efficiency.

A regulation method of a premixed gas burner substantially and/or essentially fed by hydrogen H.sub.2 as well as a device to carry out such method is described.

The present invention relates to a gas burner system (10) for a gas cooking hob, in particular for a domestic gas cooking hob. Said gas burner system (10) comprises a gas burner assembly (12) including a plurality of flame ports. At least one pot support (14) is arranged above and/or around the gas burner assembly (12) and defining a distance between said gas burner assembly (12) and a bottom of a cooking pot. At least one supply air fan (16) is provided for generating an air flow (24) to the gas burner assembly (12). A gas inlet (38) is connectable or connected to a gas supply. A gas regulator (18; 30; 36; 38) is provided for regulating a gas flow from the gas inlet (38) to the gas burner assembly (12). A control unit (20) is provided for controlling the supply air fan (16) and the gas regulator (18; 30; 36; 38). At least one thermocouple (22) is provided for detecting flames above the gas burner assembly (12) and for providing a flame signal (28) to the control unit (20).

The present invention relates to a gas burner system (10) for a gas cooking hob, in particular for a domestic gas cooking hob. Said gas burner system (10) comprises a gas burner assembly (12) including a plurality of flame ports. At least one pot support (14) is arranged above and/or around the gas burner assembly (12) and defining a distance between said gas burner assembly (12) and a bottom of a cooking pot. At least one supply air fan (16) is provided for generating an air flow (24) to the gas burner assembly (12). A gas inlet (38) is connectable or connected to a gas supply. A gas regulator (18; 30; 36; 38) is provided for regulating a gas flow from the gas inlet (38) to the gas burner assembly (12). A control unit (20) is provided for controlling the supply air fan (16) and the gas regulator (18; 30; 36; 38). At least one thermocouple (22) is provided for detecting flames above the gas burner assembly (12) and for providing a flame signal (28) to the control unit (20).

Present embodiments are directed to a system and method for generating a flame effect. An embodiment includes a nozzle assembly with an outer nozzle and an inner nozzle. At least a portion of the inner nozzle is nested within at least a portion of the outer nozzle. The system also includes a fuel source with two or more separate types of fuel.

Present embodiments are directed to a system and method for generating a flame effect. An embodiment includes a nozzle assembly with an outer nozzle and an inner nozzle. At least a portion of the inner nozzle is nested within at least a portion of the outer nozzle. The system also includes a fuel source with two or more separate types of fuel.

A gas burner assembly for a cooktop appliance is provided including a bottom housing and a center body positioned concentrically within the bottom housing. A mixing chamber is defined between the bottom housing and the center body, and the center body further defines an inner chamber positioned radially inward of the mixing chamber. Apertures provide fluid communication between the mixing chamber and the inner chamber. An upper housing is positioned over the center body and defines a boost burner chamber in fluid communication with the inner chamber of the center body and a primary burner chamber. A primary fuel inlet is in fluid communication with the primary burner chamber and a boost fuel inlet and a boost air inlet are in fluid communication with the mixing chamber.