A gas-fired, powered infrared burner unit comprising a perforate distribution plate configured as a tray and a porous foam metal burner element carried in the tray, the combination overlying the open top of a plenum box and sealingly fastened to an edge flange of said box by a retainer having a surrounding flange fastened to the plenum box flange by welding, staking or other means so as to eliminate the need for a gasket. The foam metal medium is constructed of a foam metal alloy to have a pore size of 1000 micros±5%, and produce, along with the perforations in the distribution tray, a port loading of between about 850 and 1,000 BTU/in.sup.2.

A burner assembly including a burner box with an inlet for the introduction of a combustible mixture and a block plate integrated with the burner box. The block plate assists in a desired distribution of the combustible mixture. A distribution plate overlying the block plate and a single mesh surface above the distribution plate contribute to overall improved pressure and distribution of heat across the burner assembly.

A new and improved gas fired burner unit that can be utilized in applications where low emissions and high efficiency are desired including a burner body having a lower housing unit with a bottom portion, a distribution element located above the bottom portion, a burner deck located above the distribution element, and a metal fiber mesh element located above the burner deck. The burner deck supports the metal fiber mesh and spaces the metal fiber mesh from the internal distribution element to define a burner head. At least one inlet conduit communicates with the burner body and extends into the burner body to deliver a gas/air mixture to the burner body in a region located below the distribution element and above the bottom portion of the lower housing unit. The burner head has a permeability greater than 700 liters per hour, and the bottom portion of the lower housing unit includes a plurality of ribs providing added rigidity to the burner body and eliminating combustion noise.

A fixing plate for the thermal insulation material is attached to the combustion plate flange part. Provided that a direction leaving away from the air-fuel mixture ejection part of the combustion plate is defined as an outward side direction, there are disposed: on the side edge in the outward side direction of the fixing plate, bent edge parts, which come into contact with the side edge in the outward side direction of the thermal insulation materials; and a plurality of tongue-shaped pressing claws which are elongated from the bent edge part so as to press and prevent the thermal insulation materials from getting released away from the fixing plate.

A gas-fired, powered infrared burner unit comprising a perforate distribution plate configured as a tray and a porous foam metal burner element carried in the tray, the combination overlying the open top of a plenum box and sealingly fastened to an edge flange of said box by a retainer having a surrounding flange fastened to the plenum box flange by welding, staking or other means so as to eliminate the need for a gasket. The foam metal medium is constructed of a foam metal alloy to have a pore size of 1000 micros5%, and produce, along with the perforations in the distribution tray, a port loading of between about 850 and 1,000 BTU/in.sup.2.

An inward-firing combustion burner, includes a burner casing configured to receive a fuel-air mixture at a burner inlet and to provide hot combustion gas at a burner output, a combustion substrate disposed within the burner casing, the substrate having a shape comprising at least a semi-cone or a flat surface or equivalent shape, having a substrate porosity defined by a plurality of pores, and having a substrate inner surface and a substrate outer surface, the substrate configured to receive the fuel-air mixture at the outer surface of the substrate, the fuel-air mixture passing through the pores at a mixture flow rate from the substrate outer surface toward the substrate inner surface, and the burner configured such that, in operation, the fuel-air mixture ignites near the plurality of pores to form a respective plurality of flamelets, each flamelet corresponding to one of the pores.

A catalytic flameless combustion apparatus has a fuel inlet, a combustion-supporting gas inlet, a gas premixer, a combustion plate, an igniter, a gas deflector, a flameless combustion cavity, a catalyst filled in the flameless combustion cavity, a gas collection chamber and an exhaust port. The method for starting the catalytic flameless combustion apparatus includes initially combusting and heating the flameless combustion cavity and the catalyst filled therein with low power flame; and then increasing flow velocity and switching to high power flame for conducting catalytic flameless combustion. The catalytic flameless combustion apparatus can be used for various non-solid fuel combustion and heat extraction processes.

A totally aerated combustion burner has: a burner body which is supplied therein with air-fuel mixture; and a combustion plate part which covers an open surface of the burner body. The combustion plate part is constituted by: a burner frame in a shape of a picture frame; a metal-fiber knit which is disposed to cover, from a burner-body side, an opening enclosed by the burner frame; and a distribution plate which has formed therein a multiplicity of distribution holes and which sandwiches the metal-fiber knit between the burner frame and the distribution plate. Only the metal-fiber knit is spot-welded to that opening peripheral part of the burner frame which is positioned on a same surface as the opening. The distribution plate is spot-welded to that portion of the burner frame which is offset from the opening peripheral part toward the burner-body side.

The present invention discloses an outdoor gas heater, comprising an outer cover, an outer cover side baffle, a gas injection pipe, a ceramic burner, a body box, a control box connecting support frame, a control box sealing plate, a control box, a wall-mounted bracket and a long open a flame connecting pipe. Four ceramic burners are fixed side by side in the body box, a gas injection pipe is fixed on the lower side of the body box, and a gas injection pipe is sealingly connected to the four ceramic burners; the outer open end of the body box is locked to the outer cover, and the side of the body box opposite to the outer opening thereof is locked to the control box connecting support frame. The control box connecting support frame is a U-shaped structure, and side wall of which is locked on both sides of the control box, and the outer side opening of the control box is locked to the control box sealing plate; the side of the control box opposite to the outer opening is locked to the wall-mounted bracket. The structure is reasonable in design and convenient to use, and its installation and use is very convenient and safety is greatly improved; moreover, it can save energy and maintain the demand for power supply for a long time.

A torch includes a main burner that produces a flame; a flame holding body configured to maintain the combustion state of the main burner if the flame produced by the main burner is about to be extinguished; and a gas supply pipe configured to feed combustion gas from a gas container filled with the combustion gas to the main burner and the flame holding body.