A burner unit includes first and second burner assemblies supplied with a gas mixture via first and second valves, respectively. A first valve control assembly controls the first and second valves between open and closed positions. Third and fourth burner assemblies of the burner unit are supplied with a gas mixture via third and fourth valves, respectively. A second valve control assembly controls the third and fourth valves between open and closed positions. The first and second valve control assemblies are separate assemblies that are configured to cooperate to simultaneously provide a gas mixture to the first, second, third and fourth burner assemblies in respective high power settings of the first and second valve control assemblies.

A gas burner assembly has a first fuel chamber within a burner body and this is contiguous with a plurality of inner flame ports. A second fuel chamber within the burner body is contiguous with a plurality of outer flame ports. A first supply duct extends between the first fuel chamber and a carryover duct. A second supply duct extends between the second fuel chamber and the carryover duct. A related cooktop appliance is also provided.

The handheld snow melter is a handheld propane or stabilized methylacetylene-propadiene fueled parabolic heated intended for use in removing snow and ice. The handheld propane or stabilized methylacetylene-propadiene torch is used to heat a ceramic cone. The ceramic cone is mounted in a parabolic reflector that is used to direct the heat towards the snow or ice targeted by the user. The handheld snow meiter comprises a reflector, a torch attachment, and a grip.

A gas combustor comprises a gas container, a fuel gas controlling device, a housing, a piezoelectric device and a combustion device. The safety switch is slidably disposed in an opening of the housing and includes a slide member, a fasten member and a passive member, adjacent surfaces of the slide member and the fasten member are disposed with a connecting mechanism and a radial sliding mechanism, thereby enabling the slide member to perform a radial sliding motion towards the left or the right at the front end of the fasten member; a rear surface of the passive member is formed with a lock tenon abutted against a block tenon of the fuel gas controlling device, thereby forming a lucked status; when the slide member is pulled towards the left or the right, the lock tenon is released from the block tenon, thereby forming an unlocked status.

A gas heating device includes a main body defining a combustion chamber, a catalyst disposed in the combustion chamber, and an electric thermal device provides electric thermal energy to heat the catalyst and disposed in the combustion chamber and adjacent to a side of the catalyst.

A burner case and a burner device provided with the burner case are disclosed. A cover for closing an opening of a case body of the burner case is attached to the case body by a first caulking portion and a second caulking portion. A first caulking direction and a second caulking direction intersect with each other, the first caulking direction is a direction in which a first attachment piece and a first facing portion, those constituting the first caulking portion, face each other and are caulked, the second caulking direction is a direction in which a second attachment piece and a second facing portion, those constituting the second caulking portion, face each other and are caulked. Thus, the case body and the cover are not required to be screwed or the number of the screws is reduced, and leakage of gas from the burner case to outside is prevented.

A multi-flame burner is disclosed with burner heads, which are set up to generate at least one burner flame directed along a respective flame axis when supplied with a fuel, wherein the flame axes of respectively adjacent burner heads are inclined relative to each other. A method for preheating a workpiece, in particular a pipe or large-diameter pipe, using a multi-flame burner is also disclosed.

A burner for a gas cooker that includes a burner port defining an interior area, the burner port including an opening to the interior area; one or more tubes that are coupled to the burner port and that are configured to provide mixed gas to the interior area of the burner port; a heating element that is configured to cover the opening of the burner port and that is heated by gas-generated heat; and a shielding plate that (i) is coupled between the heating element and the burner port, (ii) is configured to cover a first portion of the opening of the burner port, and (iii) is configured to spread mixed gas that is provided from the one or more tubes into the interior area of the burner port.

A gas burner has a burner deck having a first face and an opposite second face and a plurality of ports extending therethrough. A burner skin is coupled to the second face of the burner deck and covers the plurality of ports. The gas burner includes an igniter, and part of the igniter is located on the second face of the burner deck adjacent the burner skin. A burner tube extends from the second face of the burner deck and surrounds the plurality of ports, the burner skin, and the part of the igniter that is on the second face of the burner deck. The ports are arranged such that a perimeter thereabout formed tangent to each outermost port has a non-circular shape having a first dimension and a second dimension perpendicular to the first dimension, the first dimension being greater than the second dimension.

Provided is a collapsible barbecue (10) comprising two leg panels (12) each defining a complementary diagonal keyhole slot (14) therein, a gridiron or grill (16), and a holder arrangement (18) for operatively holding a thermal energy source. The holder arrangement (18) comprises a quadrilateral frame (20) with each leg panel (12) hingedly arranged on an opposed side 22.1 and the gridiron or grill (16) hingedly arranged on a transverse side 22.2 of the frame (20). The two side panels (24) are each hingedly arranged at a transverse side 22.2 of the frame (20), with a floor panel (26) hingedly fast with each side panel (24) distal from the frame (20) to form a floor of the holder arrangement (18). One floor panel hinge 28 defines an extending head (30) at either ends of said hinge. In this manner, the barbecue (10) is arrangeable between an assembled position, in which the leg panels (12) are substantially parallel and upright with the extending heads (30) of the floor panel hinge (28) captured within the respective keyhole slots (14) and the frame 20 and floor panel (26) of the holder arrangement (18) being substantially horizontal, and a collapsed position, in which the leg panels (12), gridiron or grill (16), quadrilateral frame (20), side panels (24) and floor panel (26) are hinged onto each other to lie substantially coterminous.