Abstract: A gas burner for a fireplace. The burner comprises a burner housing having a grid of openings that are formed from heat resistant material. The housing has a first burner assembly and a second burner assembly arranged therein in a side-by-side relationship, each burner assembly having a chamber with a perforated gas distribution plate. The gas distribution plate is located adjacent the grid. Each of the burner assemblies has a gas mixing area with an inlet for primary air and combustible gas, and air flow controllers e.g. primary air shutters, for controlling the ratio of primary air to gas in the first burner assembly lower than the ratio in the second burner assembly.

Abstract: The invention relates to a heating device (100) employing catalytic combustion of gas, especially of petroleum gases, comprising:a flat combustion enclosure (110) delimited by two parallel large plane walls (111, 112), at least one of which is a heater plate made of a metallic material, the said combustion enclosure (110) being provided with at least one gas inlet (130a, 132a, 132b, 134a) and one outlet (111a, 111b),a gas circulation circuit, devised inside the said combustion enclosure (110) between each gas inlet and each outlet, the gas circulation circuit passing through at least one catalytic contact surface (121a, 122a, 123a, 124a).

Abstract: A radiant heater which burns LPG fuel is provided with an improved burner assembly and an improved support assembly for mounting the heater on a propane tank. The heater includes a frame, a reflector mounted on the frame, and a burner assembly which is removably mounted within the reflector and the frame. The burner assembly includes a burner tube having an inlet end mounted within the frame and an outlet end positioned within the reflector. A generally dome-shaped screen is mounted on the outlet end of the burner tube, and a generally circular screen is attached to the dome-shaped screen substantially in alignment with the burner tube. A burner pan is mounted on the burner tube and surrounds the dome-shaped screen, and an outer screen extends across the burner pan. A thermocouple sensor and/or an igniter electrode on the frame extends through one or more openings in the burner pan.

Abstract: A gas heating apparatus comprises a duct constructed by a heat insulating material having a heat resisting property, a plurality of honeycombs disposed across in the duct so as to oppose to a direction of a gas flow in the duct, the honeycombs being formed of a material having a heat resisting property, and a plurality of heat radiating members disposed inside the duct so as to oppose to the honeycombs, respectively, for radiating heat to the honeycombs. The gas entering the duct flows therein and is heated during the passing through the honeycombs. The honeycombs are constituted as partition walls.

Abstract: A flat pan gas burner for a gas log fireplace system comprises a U-shaped pan formed in a sheet of metal. The U-shaped pan is provided with attachment flanges and a gas pipe attachment aperture through which is attached a gas pipe adapter. A burner plate is further provided with a plurality of gas flame apertures in a predetermined pattern for creating a desired flame pattern below the gas log system. If desired, there is further provided a layer of porous ceramic material on the burner plate which is impregnated with metallic salts and which produces a desired lengthening and coloring of the gas flames of the gas burner. A rocking or sliding support of the flat pan gas burner imparts movements and/or different length to the colored flames.

Abstract: The invention concerns an injection and regulation device for burners for heating appliances equipped with a duct (4) for an air/gas mixture and comprising a Venturi element (5). According to the invention, the means of injection include at least two injectors (13, 18) arranged with their injection nozzles staggered longitudinally and oriented so that the axis of their flux converges on the heart of the Venturi element (5). Furthermore, one of the other injectors (13), named first stage, is calibrated so that it gives an injection flow corresponding to a minimum idling rate, and is connected in such a way as to be constantly supplied with gas. In addition, the means of regulation (16) are adapted to modulate the supply to each of the other injectors (18), named second stage, so as to obtain the power required.

Abstract: A fuel fired, forced air, draft induced heating furnace is provided with NOx reduction apparatus associated with a plurality of combustor tubes forming a portion of its heat exchanger structure. In-shot type fuel burners are spaced apart from and face the open inlet ends of horizontal combustion sections of the combustor tubes. The NOx reduction apparatus includes a plurality of insert members received in inlet end portions of the combustor tubes. Each insert member is formed from a single sheet of metal mesh material and has a hollow, open-ended body portion coaxially received in its associated combustor tube and spaced laterally inwardly from its interior side surface, and a circumferentially spaced plurality of integral, laterally outwardly projecting support rib portions that slidably engage the interior side surface of the combustor tube, thereby automatically maintaining the insert member in a coaxial relationship with the combustor tube regardless of the positional orientation of the tube.

Abstract: Use is made in a drying and ironing machine having a rotary cylinder (10) of a pipe burner (18), which comprises a dense network of microperforations. Microflames mainly form in the microperforations and ensure a heating mainly in the infrared range. It is thus possible to orient the microflames towards that part of the cylinder (10) which is in contact with the linen or laundry. By placing the pipe burner (18) in the bottom of the cylinder and a combustion product recovery pipe in the top, there is a sweep (F2) of a part of the cylinder by the combustion products. Therefore the performance characteristics of the machine are improved and its manufacturing costs are reduced.

Abstract: A gas-fired infrared radiator comprising a closed housing which includes a combustion chamber, with a side of the radiator that is to be directed towards an object being a radiation plate which forms a boundary of the combustion chamber, and comprising at least one burner, wherein the or each burner is a high-speed burner adapted for combustion in two combustion stages, with the second combustion stage taking place in the combustion chamber, the or each high-speed burner is arranged in such a manner that a flame formed by the or each high-speed burner is directed at the radiation plate, and gas guiding means are provided for partly recirculating flue gas which has been passed along the radiation plate, to the first or second combustion stage.

Abstract: In a gas-fired stove or oven, gas is burned in a porous ceramic surface combustion burner which generates selective emissive radiation in a narrow band. The high temperature surface of the burner includes a narrow band quantum emitting substance such as rare earth metal oxide. Relatively shorter wavelength radiation from this quantum emitting surface illuminates process targets having an absorption spectrum nearly matched to the emission spectrum of the burner surface, for a variety of applications such as cooking. The selected emission may be passed through a glass top stove to heat a pot with an absorptive bottom or may pass on through a glass pot to heat the food directly.

Abstract: A sealed combustion, low profile gas-fired baseboard heater has a heat exchanger which is U-shaped, and which has upper and lower horizontal sections. Appropriate inlets are provided for air and combustion gas, and a gas valve. The air inlet may be coaxial with an exhaust for combustion gases. The heater may include a combustion blower, in which case the heat exchanger can include fins and other features to improve heat transfer. A natural draft version includes a larger bore tubular heat exchanger. Ignition can be by way of a pilot. Alternatively, a hot surface igniter, with safety lockout-timing device, can be used.

Abstract: An improved radiant heater for use in dusty environments and at low gas pressures. An open throat, single port burner, which is not subject to obstruction in dusty environments, directs combustion products vertically from a lower fuel input end to an upper flame-emanating end. The burner is adjustably mounted to a base unit so that air entrainment into the burner may be controlled by adjusting the distance between the base unit and the burner fuel input end. The burner conductance may be adjusted to operate at varying fuel input fluxes by attaching an area reduction means to the burner. The burner flame emanating end is directed into a combustion chamber which absorbs the heat generated by combustion and radiates the absorbed heat into the ambient. The lower surface of the combustion chamber has an aperture for receiving the burner flame emanating end, and acts as a heat shield. Control components, such as control circuitry and a fuel valve, are housed within the base unit, further shielding them from heat.

Abstract: A device for use in gas cooking grills having burner elements, and improved gas cooking grills incorporating the device, comprising a radiant member composed of a high heat reflective material having a circular cross-section mounted directly above each burner element, and preferably a secondary planar radiant member mounted directly below each burner element. Both the radiant member and planar radiant member are wider than the burner element.

Abstract: A mobile fossil fuel heating device allows almost any indoor or outdoor area to be heated with radiant heat. A radiant tube gas burning heater is mounted on a wheeled carriage for rotation about a horizontal axis so that the radiating face of the heater may be positioned in a desired orientation. Once positioned, the heater is held in that position by a clamp arrangement. The fossil fuel for powering the heater may comprise a number of propane tanks mounted on the carriage, and shielded from the heater by infrared shields. Hollow shafts mount the heater for rotation, and a fuel conduit, and an electrical wire, pass through one of the shafts to supply fuel and power to the heater while not interfering with the rotation of the heater.

Abstract: A block-like curtain of reticulated ceramic foam is spaced forwardly of the burner nozzle of an industrial burner and, when heated by the flame of the burner, oxidizes unburned CO into CO.sub.2 to reduce the emissions of CO. By virtue of the curtain reducing the CO emissions, the burner may operate with a slower, longer and lower temperature flame so as to reduce NO.sub.x emissions. The curtain may be adjusted toward and away from the burner nozzle in order to correlate the position of the curtain with the length of the flame.

Abstract: A single ended radiant tube for furnace heating has four concentric tubes (10, 12, 14, 16). Fuel gas is fed through tube (16) and combustion air through the space between tubes (12, 14). Flame and combustion products flow first in the same direction as the gas and air and then reverse at the end of tube (12) to flow in the opposite direction between that and tube (10). The combustion air is caused to flow in a helical pattern by the provision of helix (36) so as to provide an extended flow path for better heat transfer.

Abstract: An electric far-infrared heater has a plate-like porous metallic panel formed by an electroforming process installed in a box-like housing over an electric heating element therein. The panel is heated by the element and has its outer surface covered by a porous ceramic far-infrared emitting layer of Al.sub.2 O.sub.3, TiO.sub.2, Cr.sub.2 O.sub.3, MgO, ZrO.sub.2, SiO.sub.2 or mixtures thereof. A stream of gas supplied to the interior of the housing is heated by the element and passes through the porous panel and far-infrared layer for discharge onto the object being heated.

Abstract: A low NO.sub.x atmospheric gas burner is provided, which includes at least one burner tube having a plurality of gas outlet orifices terminating in a burner bed, and a plurality of plates disposed above the burner tube within the reach of the flame, which plates lower the temperature and effect a stepped combustion. According to the invention, the plates extend parallel to, and on opposite sides of, the orifices provided in the burner tube, and the orifices are arranged in a line parallel to the burner axis. The plates are connected direct to the burner tube substantially throughout the entire length of their lower edges.

Abstract: A liquid fuel combustion type infrared ray irradiating apparatus includes a base having a generally rectangular-shaped framework, each corner of which is provided with a wheel, a fuel tank fixed to the base, and a pump disposed on the base and adapted to pump fuel from the fuel tank. A combustion chamber is connected to a burner which receives fuel from the pump for combustion. An irradiation pipe is connected to the combustion chamber for guiding combustion gas from the combustion chamber into an upper chimney, receiving heat from the combustion gas, and irradiating infrared rays. Reflecting plates are disposed to forwardly reflect rearwardly directed radiant heat which has been radiated from the irradiation pipe.

Abstract: A baffle assembly for a generally elongate heat exchanger tube of the type used in an atmospheric gas-fired heating appliance includes a perforated plate member formed in a V-shaped configuration and adapted to be secured within the heat exchanger tube in the path of combustion gases issuing from a heat exchanger. Ears formed integrally with the plate member engage the rearward end of the heat exchanger tube, and a rod extending forwardly of the plate member engages the forward end of the heat exchanger tube by means of a hook-shaped end portion formed thereon. The plate member is thereby secured within the heat exchanger tube such that combustion gases directed at the forward edge of the plate member are deflected outwardly against the side walls of the heat exchanger tube increasing the heat transfer rate thereto.

Abstract: An inner tube for a radiant tube for recirculating burnt gases supplied by a burner, consisting of a plurality of axially aligned assembled tube sections arranged end to end whereas the assembling means consist each one of a sleeve coaxially surrounding the ends of said sections to be interconnected and the radially inner surface of which comprises in the middle of its length an annular collar projecting radially inwards and fitting between both tube sections to be connected together, the inner surface portions which are located on either side of the collar widening gradually towards the sleeve ends.

Abstract: An apparatus for supplying heated air to an air stream including a first air flow duct having an inlet and an outlet, a blower for forcing air through the duct to the first duct outlet, and a second air flow duct having an inlet, an outlet, and a burner chamber between the inlet and outlet, with the second duct outlet connected to the first duct downstream of the blower for drawing atmospheric air through the second duct by air flow through the first duct. A gas burner in the burner chamber, an apertured refractory wall positioned across the second duct downstream of the burner, and a refractory liner for the inner surface of the burner chamber between the burner means and the apertured wall.

Abstract: The present invention provides a high output radiant heater which uses a heat exchanger to obtain a variety of types of heat from a single power source.

Abstract: The invention provides a compartmented gas fired heater in a cabinet-type outer stove casing. The outer stove casing has a downwardly positioned covered bottom with adjustable legs at four corners and an upwardly positioned opened top edge. A heat chamber insert having a covered bottom and an opened top is fitted inside the outer stove casing and retained so a corridor exists between all wall surfaces and the two bottoms. The top of the two sections are covered over the corridor area by a framing cover leaving the top of the heat chamber insert open as a hot air outlet. A caged outlet cover fits over the hot air outlet. Cool air is passed into the heat chamber insert through an air inlet casing. When a controlled gas burner is fired in the corridor below the bottom of the heat insert chamber, heat spirals up the corridors, is conducted through the outer stove casing and through the heat chamber insert walls and convected up through the top hot air outlet.

Abstract: A discharge pipe is directly associated with one of the main heat exchange walls of a monoblock heating body, and a backflow damping device comprises two siphons placed symmetrically on either side of the pipe, each having a passage above the level of the horizontal axis of the pipe, which axis is situated in the median transverse plane of the heating body, and each of the siphons is situated substantially in line with an opening formed in the corresponding lateral side near the corresponding one of the two ends of the burner.

Abstract: An infrared radiant heater comprising a burner for moving combustion supporting air over an exhaust flue gas transfer pipe toward the fuel nozzle which is spaced from the blower. A first cone of high temperature resistant metal positioned at said nozzle to receive heat from the combustion of the fuel and an interior cone shaped surface to maintain heat against said first cone and direct the exhaust gases to said flue gas transfer pipe.

Abstract: A space heater for small compartments in which the burner is received in an upwardly open tray bottom which has an outwardly extending flange connected to an outwardly extending flange at the lower end of the combustion chamber. The tray has a lateral opening for the combustion air thereby eliminating the need to go through the floor with a pipe forming a combustion air intake.

Abstract: A system for the transmission and conversion of the potential energy of hydrocarbon fuels to available heat, power and light. The system is particularly adapted for use with natural gas, artificial gases or any of the LPG fuels such as propane, butane, etc. According to the system of the invention, the fuel gas is mixed with air preferably in the amount providing the stoichiometric ratio to oxygen and is stored under pressure and ultimately transmitted to burner elements which are hermetically sealed except for the inlet and discharge ports, such as tubes, power sources, such as captive and free piston devices and gas turbines and light sources. The system includes special forms of equipment for mixing and pressurizing the gas and air in the correct ratio and special forms of equipment for establishing and controlling the combustion processes.

Abstract: A room heating apparatus for small spaces adapted to be fired with a gaseous or vaporized liquid fuel, especially for mobile homes, has a combustion gas channel with an upper horizontal cross channel serving as a heat exchanger. Outer fins (12, 20) project from the sidewalls (16) of the combustion gas channel. In order to increase the heat exchange from the upper cross channel (5) and avoid the overheating also under greater loads, the outer fins of the cross channel (5) are formed as large surface fins (20), which project essentially further in the right angle direction from the vertical sidewalls (16) of the cross channel (5) than the outer fins (12) arranged thereunder extend from their respective channel wall.

Abstract: A system for the transmission and conversion of the potential energy of hydrocarbon fuels to available heat, power and light. The system is particularly adapted for use with natural gas, artificial gases or any of the LPG fuels such as propane, butane, etc. According to the system of the invention, the fuel gas is mixed with air preferably in the amount providing the stoichiometric ratio to oxygen and is stored under pressure and ultimately transmitted to burner elements which are hermetically sealed except for the inlet and discharge ports, such as tubes, power sources, such as captive and free piston devices and gas turbines and light sources. The system includes special forms of equipment for mixing and pressurizing the gas and air in the correct ratio and special forms of equipment for establishing and controlling the combustion processes.

Abstract: A room space such as a caravan is provided with a gas fired space heater having an upright casing within which is located a sealed surface combustion unit having a radiant plaque on one side of which gas is burnt. Primary and secondary air for combustion are fed from inlets below the floor of the room to appropriate sides of the plaque. The products of combustion pass upwardly to an upper part of the casing and then are deflected by a baffle sideways and downwardly to an outlet located below the plaque and below the floor of the room.

Abstract: A flameless catalytic combustion apparatus includes a combustion chamber with a hydrogenous fuel inlet and a mass of catalyst in the chamber between the inlet and an outlet. Preferably the catalyst mass comprises porous pellet bodies supporting varying high and low concentrations of platinum family metals dispersed therein. For spontaneous starting of combustion the fuel is one of the lower alcohols and the high catalyst concentration is at the fuel inlet. The fuel may be in a container pressurized by air, or a lower ether or lower hydrocarbon which is also a fuel. Preferably separate, valved conduits from the fuel container first supply either atomized fuel droplets or air and fuel vapor to the high catalyst concentration for spontaneous ignition of combustion and vaporized fuel for continued combustion throughout the catalyst mass. The catalytic combustion apparatus may include a heat exchanger for fluids such as air, water or personal care foams and creams, or may be used in heating and cooking apparatus.