Abstract: A gas burner assembly, including its gas intake manifold, in combination with upper and lower tiered baffles, and includes the side chambers for regulation of flow if air through a draw in and through type of burner assembly, to provide heated air for a building. Various slots are provided in both the side chambers, and are custom designed for application to select tiers of the upper and lower baffles, to precisely regulate the flow of air into the combustion chamber, and regulate the type of flame generated, to furnish very precise generation of heat, and BTU output for the various sized burner assemblies.

Abstract: A self-powered space heater. At least one thermoelectric module is sandwiched between a hot surface of a combustion chamber of a fluid fired space heater and a room air-cooled heat exchanger for transferring heat from the space heater to room air. A blower circulates room air through the heat exchanger for the dual purpose of heating the room air and also removing heat from the heat exchanger. In a preferred embodiment two thermoelectric modules are utilized in a diesel fuel fired space heater to provide heated air for the cab of a diesel truck. Spherical self-alignment washers are used in a compression frame to apply uniform compression force to both hot and cold sides of the thermoelectric modules. The two modules provide about 25 Watts output that is more than sufficient power to operate the heater that requires about 20 Watts. Extra power can be used for other purposes such as battery charging.

Abstract: A diffuser for a gas duct burner having a fuel pipe and a plurality of stabilizers includes a plate having first and second spaced apart ends defining a length, and first and second spaced apart sides defining a width. The plate has a first portion having a uniform width which is disposed adjacent to the stabilizer and a second portion having a variable width.

Abstract: An air heating burner having improved CO emissions across a broad range of heat inputs. The burner incorporates wings which cover portions of mixing plates associated with low to medium-low fire. The wings reduce air flow velocity to eliminate quenching during such conditions, thereby increasing combustion temperature and reducing CO emissions. The wings also form pre-heat chambers which further increase combustion temperature. The burner produces a substantially consistent level of CO emissions across the range of inputs, regardless of the pressure drop across the burner.

Abstract: A portable heater adapted for use in a recreational enclosure or temporary work enclosure includes a housing having an air inlet on the lower front face. A gas supply is partially enclosed by the housing which provides propane to the mouth of a burner venturi located within the housing. Air is drawn through the air inlet and also enters the mouth of the burner venturi. The air and gas are mixed thoroughly as they travel upwardly through the burner venturi. A chimney effect increases fresh air flow velocity into the burner venturi and allows the heater to operate at a reduced fuel gas pressure. Upon exiting the burner venturi, the air/gas mixture is to a plenum and radiant surface where combustion takes place. Any conventional means may be provided to ignite the air/gas mixture in order to cause combustion. The combustion products deflect off a deflector, which is cooled on a rear face by air flow through the housing, which decreases the temperature of the combustion products before exiting an outlet.

Abstract: A portable heater adapted for use in a recreational enclosure or temporary work enclosure includes a housing having an air inlet on the lower front face. A gas supply is partially enclosed by the housing which provides propane to the mouth of a burner venturi located within the housing. Air is drawn through the air inlet and also enters the mouth of the burner venturi. The air and gas are mixed thoroughly as they travel upwardly through the burner venturi. A chimney effect increases fresh air flow velocity into the burner venturi and allows the heater to operate at a reduced fuel gas pressure. Upon exiting the burner venturi, the air/gas mixture is to a plenum and radiant surface where combustion takes place. Any conventional means may be provided to ignite the air/gas mixture in order to cause combustion. The combustion products deflect off a deflector, which is cooled on a rear face by air flow through the housing, which decreases the temperature of the combustion products before exiting an outlet.

Abstract: Radiant tube space heating appliance (FIG. 1) has radiation ducting 10 with one or more inline burners 16 in a branch or branches 12 upstream of common tailpipe 20. An exhuast fan 22 in the tailpipe draws heated gases thought the ducting. A power operated control damper 28 in the tailpipe is actuated in response to sensing of the gas temperature in the tailpipe to reduce the induced flow therein when the temperature is below a certain level to counteract the increased volume throughput of the adjacent fan at lower temperature so that performance burners, e.g. on start up, is not adversely affected.

Abstract: A unitary airflow diffuser for use with a forced-air space heater has a plurality of spurs radially extending from a hub. The spurs include one or more vanes for deflecting the airflow generated by fan blades within the space heater. A nozzle assembly is secured through an aperture in the hub of the diffuser for supplying fuel within a combustion chamber. Brackets can be provided for securing an igniter and a sensor to the airflow diffuser. Mounting tabs are provided on each vane to secure the airflow diffuser to a mounting plate disposed at the input of the combustion chamber. The nozzle ejects the fuel through a central aperture in the mounting plate into the combustion chamber. The mounting plate can have secondary apertures through which air can be diverted, and vanes can be provided on the mounting plates to direct air through the secondary apertures.

Abstract: A fuel-operated heater, especially an auxiliary heater for a motor vehicle, with a fuel feed pump and/or with a combustion air fan, the heater, being operated in a predetermined lambda range. The heater is associated with a pressure sensor, by which the controllable fuel feed pump and/or the controllable combustion air fan can be energized via a control device. The pressure sensor may be arranged externally or also in the heater, especially on the pressure side of the fan. Not only changes in air pressure caused by atmospheric conditions, but also system-dependent changes in air pressure can be corrected in the case of the arrangement of a sensor on the pressure side of the fan.

Abstract: A portable compressed air heating system for delivering a flow of heated air directed at a substrate. The system first includes a hot air distribution member for placement in juxtaposition with the substrate and thereafter distributing heated air collected from a heater module. Second, the system includes a heater module for receiving and heating a continuous volume of air, and is equipped with an adjustable velocity production element for drawing and delivering heated air to the hot air distribution member. An interface conduit connects the heater module to a system controller disposed upstream therefrom, and includes circuitry directed by the controller for operation of the heating module. The system controller includes an air-in port for receiving air, an air-out port for distributing air, a heater-power conduit, a temperature controller, an air pressure monitor, and an air pressure adjuster.

Abstract: A hair drier has a hollow handle, a barrel support device disposed on the hollow handle, and a barrel disposed on the barrel support device. The barrel has a through hole, a heat collection net, a fan, and a motor. A flame nozzle is disposed in the barrel support device. A gas igniter is disposed in the barrel support device in front of the flame nozzle. The hollow handle has a gas chamber, a battery chamber, a gas adjustment button, a motor speed adjustment button, and an ignition button. A gas pipe is connected to the flame nozzle and the gas chamber.

Abstract: A portable space heater in which a fuel discharge nozzle discharges fuel into a combustion chamber from a fuel tank. A rigid non-flexible metal tube extends between the nozzle and tank. The tank includes an opening with a closure member in the opening. The closure member includes an opening into which a tube compression fitting can be secured for securely affixing one end of the tubing. In the preferred embodiment, the tank is plastic and the closure member is an insert which is insert molded into the top of the tank. In another embodiment, the tank can be metal with the closure member welded to the top wall thereof. In still another embodiment, the closure member is a cap threaded on a threaded opening. In all embodiments, the fuel filter is located inside the tank and is accessible by withdrawing it from the tank through an opening in the insert.

Abstract: A gas-fired heating and ventilation system includes a blower which draws air through a recirculation damper from a building and through a direct gas-fired burner from a fresh air inlet. A passive control damper is mounted to bypass air around the burner and to thereby regulate the air flow through the burner for optimum combustion over a wide range of operating conditions.

Abstract: A fuel-operated heater, especially an auxiliary heater for a motor vehicle, with a fuel feed pump and/or with a combustion air fan, is provided with a combustion control circuit. The control circuit acts to maintain a predetermined air-to-fuel ratio at a constant value in the combustion chamber of the heater ("lambda value") by energizing the controllable fuel feed pump and/or the controllable combustion air fan.

Abstract: A portable space heater in which a plastic tank is utilized underneath a relatively heavy heater unit. The plastic tank is protected against stresses exerted on it by the heater unit by a unique support structure that is supported on the same portable frame as the plastic tank.

Abstract: A self-regulating forced-air heater includes a housing in which is located an air passageway. A blower forces air through the air passageway, including into and out of a combustion chamber. A burner disposed within the combustion chamber combusts a fuel and air mixture to heat the air exiting of the combustion chamber. A venturi effect is used to draw the fuel and air mixture through the burner and into the combustion chamber. An adjustable venturi plate assembly is positioned between the blower and the burner, and expands or contracts in surface area to increasingly or decreasingly block the center of the air passageway. A control assembly includes an electronically controlled valve, an electronic controller, an electrical actuator, and a temperature sensor. The electronic controller monitors the temperature sensor, determines if an adjustment is needed in heat output, and in response thereto, adjusts the temperature of the air exiting the self-regulating forced-air heater.

Abstract: A channel burner for heating up flowing gas, accommodated inside the channel (1) that conveys the gas and provided with an airbox (2) and a combustion space (3) separated by a burner floor (5). The airbox communicates with an air intake (6) and the burner floor is provided with air-outlet openings in the form of slots (15) in the vicinity of the wall (4) of the combustion space. A gas-supply pipe (7) extends through the airbox and communicates with one or more gas nozzles (12) with bores (13) that open into the combustion space. The outlet cross-section of the slots is beside the bores. The outlet cross-section of the slots is remote from and downstream of the bores in terms of the flowing gas. The slot extends toward the wall of the combustion space. The ratio of the width s of the slot to the width 1 of the combustion space ranges from 0.01:1 to 0.1:1 at the level of the outlet cross-section of the slots.

Abstract: A liquid fuel space heater having a specially designed tank and fuel line assembly. The tank includes two capped openings. The first capped opening is an opening in which the fuel is permitted to be introduced. The second capped opening includes an opening in the top receiving a fitting to which a rigid metal tube is connected. A filter is connected to the lower end of the fitting so as to be located inside the tank.

Abstract: A portable heating unit having a housing with a carrying handle, the housing including a motor portion, a blower and an air intake. The housing also includes a mounting nose for receiving a hot air delivery barrel which has a double safety wall construction through that area in which flames for heating air will be generated. A gas nozzle assembly is received either at an angle through an opening in the barrel wall or disposed concentrically within the barrel portion for introducing gas into the barrel. The nozzle assembly draws its air supply for combustion either in the back of the nozzle member and independent of the forced air supply or through the rear end of the barrel and an igniter is provided for lighting the gas by spark means.

Abstract: An ignition device including a housing, which is formed of an upper shell, a bottom shell, and a partition plate longitudinally connected between the upper shell and the bottom shell; a gas release device mounted within the housing and controlled to release a fuel gas for burning; a sliding control key device mounted on the housing and controlled to drive the gas release device, causing the gas release device to release the fuel gas, and to produce static sparks for burning the fuel gas; and a fan device mounted within an upright endless wall on the partition plate between the upper shell and the bottom shell and controlled by the sliding control key device to draw a flow of air into the housing, permitting the flow of air to be further guided out of the housing for accelerating the burning of the article been burnt by the ignition device.

Abstract: The pressure head needed to drive combustion air into the combustion region (46) of a heat gun (930) is imparted to the air by a compressor blades (36) driven by a turbine whose blades (32) are interposed in the fuel conduit that leads to the combustion region (46). The expansion of the gaseous fuel, which is obtained from a pressurized source, provides the power to impose the necessary pressure head. The turbine-compressor combination is efficient enough that it can extract from the fuel flow enough power to maintain the necessary pressure head not only on the combustion gas (A.sub.1), which flows through vents (44) in a manifold (43), but also on a larger volume of air (A.sub.2) delivered downstream of the combustion region (46) to dilute the combustion products and thereby cool them to the desired heat-gun output temperature.

Abstract: A portable outdoor heater comprises a plurality of hollow, rigid drum sections releasably connected in an end-to-end relationship so as to form an elongated conduit having a horizontally disposed longitudinal axis. Adjacent drum sections are releasably secured to one another by hasps. A propane burner extends into one end of the conduit to provide heat into the drums. The drums each have a plurality of holes therein through which the heat dissipates. A container is provided for holding balls, gloves and other objects to be warmed. In use, the heater can simultaneously warm many people standing adjacent the drum sections, leaning against the drum sections, or sitting upon the drum sections. The heater can be quickly and easily disassembled for storage and transportation.

Abstract: In a direct gas-fire heater assembly having a generally box-like housing with a grate-like floor with a conventional gas regulator, a gas port mounted within a box-like shroud, the shroud having one side with a predetermined number, shape and size of primary combustion air inflow orifices to direct primary combustion air toward the gas port. A burner is mounted on the shroud over the gas port. The area above the burner and adjacent to it contains an ignition device and flame sense rod as well as a pair of opposed and particularly oriented flame shields on each side of the flame orifice. One each of a pair of opposed baffle-type deflectors is arranged on each side and just above the flame shield so as to form a combustion chamber as well as a path for secondary air flow to a downstream chamber. An additional flame deflector is formed on one baffle-type deflector to deflect the flame toward the blower area.

Abstract: The pressure head needed to drive combustion air into the combustion region (46) of a heat gun 930) is imparted to the air by a compressor blades (36) driven by a turbine whose blades (32) are interposed in the fuel conduit that leads to the combustion region (46). The expansion of the gaseous fuel, which is obtained from a pressurized source, provides the power to impose the necessary pressure head. The turbine-compressor combination is efficient enough that it can extract from the fuel flow enough power to maintain the necessary pressure head not only on the combustion gas (A.sub.1), which flows through vents (44) in a manifold (43), but also on a larger volume of air (A.sub.2) delivered downstream of the combustion region (46) to dilute the combustion products and thereby cool them to the desired heat-gun output temperature.

Abstract: A method of heating matter comprises supplying a gaseous mixture, which is reactable to produce heat, at a temperature above that at which spontaneous ignition occurs to a heating zone such that the gaseous mixture reacts to provide a heated fluid flow in said heating zone, and supplying matter to be heated to said heating zone.

Abstract: A furnace includes a generally cylindrical combustion chamber that is open at one end for receiving a single port inshot target burner. The target burner includes a flame spreader for lowering the heat energy and temperature of the gas flame so as to reduce NO.sub.x emissions. The flame spreader includes a plurality of rods affixed to the target plate or disc.

Abstract: In order to make a hair dryer available outdoors or where a general power source is not available, an LPG powered hair dryer is provided. The hair dryer comprises a main body which can receive a bottle of LPG (liquified petroleum gas), and a burner in the main body for burning the LPG. The burner flame heats a double radiant plate arrangement in front of the burner and hot air is blow from the plate arrangement by a battery powered fan motor at the rear of the housing. A gas-interrupting valve, a gas-adjusting valve, an operation switch and a thermal sensor are also provided in the housing.

Abstract: A lightweight surface heater suitable for repairing asphalt pavement, or the like, which conveniently folds for trailering. Air and gaseous fuel are mixed and forced down through refractory blanket to burn on its lower surface radiating heat to the roadway. A hinged middle allows one half of the heater, with trailer tongue and tires attached to its top, to be folded upside down underneath the other half during transport.

Abstract: Burner assembly for location within an air supply housing for heater the burner assembly having opposite side walls, upper and lower tiered baffles, each having connected thereon an air balancing baffle, the air balancing baffles and tiered baffles forming a combustion chamber therebetween, a gas manifold arranged approximately at the intake end of the burner assembly, with an associated shroud for directing air around the gas manifold, and for selectively diverting and directing air through the air balancing baffles, and into the combustion chamber. A diverter is arranged for directing incoming air, and deflectors are provided at the upper and lower front of the shrouds to direct the passage of air into the path of the combustion gases. Slots are provided within the brackets holding the front of the shrouds to reduced heat generation, and the arrangement of various slots provided within the tiered baffles provided fo reducing hot spots.

Abstract: A furnace includes a generally cylindrical combustion chamber that is open at one end for receiving a single port inshot target burner. The combustion chamber is connected to a heat exchanger through which the combustion products are drawn by an induced draft blower. A flame retention ring is provided in the target burner to aid the flame in attaching to the outer surface of the flame retention ring and thereby improve flame lifting characteristics. Also, a frustro-conical member surrounds the end of the target burner within the combustion chamber for directing air into the combustion zone to enhance the combustion process.

Abstract: The invention relates to a process and a device for indirectly heating a flow of gaseous fluid. According to the invention, the flow of fluid to be heated is first subjected to a first heat exchange with combustion products, in a heat exchanger (3), and is subsequently subjected to a second heat exchange with a heat-exchanging fluid circulating in a second heat-exchanger (5). The flow of fluid to be heated is then circulated in a third exchanger (7) where it is subjected to a heat exchange with the combustion products before the latter are used at the time of the first heat exchange. The third heat exchanger (7) can comprise radiating tubes (51) and convection surfaces for heating the flow of fluid in circulation, essentially by convection.

Abstract: A heater, in particular a motor vehicle heater operated with liquid fuel in which the fuel to be fed to the burner of the heater is preheated using the thermal energy of the combustion gases in the discharge area of the heater to guarantee reliable operation of the heater even at low temperatures, and to prevent paraffin separations, especially with diesel fuel in advance of filter devices in the fuel supply of the burner. For this purpose, a fuel preheating pipe section is provided that can be made in the form of a spiral-shaped pipe loop and that is placed in the flow of combustion gases, which have passed through the heat exchanger of the heater. Since the fuel is warmed in the fuel flow pipe before passage through the filter device, clogging of the filter device is avoided. In accordance with various embodiments the fuel preheating pipe section can be placed in an exhaust gas collecting chamber of the heater or in an exhaust gas discharge connection.

Abstract: An air heating apparatus for air that is to be supplied to a blast furnace. The apparatus includes a number of separate air heater devices connected together in series flow relation so that the total temperature increase is the sum of the heating actions produced in the individual devices. Each device includes a tube-shell heat exchanger and a plurality of burner units oriented around the shell to direct flames against outer surfaces of the tubes.

Abstract: A method and system for flue gas recirculation is disclosed which will minimize NOx production from hydrocarbon combustion. In the present invention a furnace having an oxygen-bearing primary source of combustion air, a mixing chamber, a combustion chamber in downstream communication with the mixing chamber and an exhaust section downstream of the combustion chamber is provided with a flue gas recirculation line. The recirculation line establishes communication between the exhaust section and the mixing chamber for the return of combustion products as a secondary source of combustion air which is relatively lean in oxygen and is combined with the primary source of combustion air in the mixing chamber. The ratio of flow rates for the primary and secondary sources of combustion air is controlled by a signal generated by a sensor which senses the oxygen concentration in the mixing chamber.

Abstract: The present invention relates to a hot air-generating device, combining a catalytic gas burner and a fan. According to the invention, on the one hand, the catalytic burner is of the induced-air type, for which means for mixing primary air in with the pressurized fuel gas are arranged upstream of the burner and, on the other hand, these same means comprise a component for drawing off oxidant air, independently of the circulation conduit which draws off primary air outside the latter. The invention can be applied to any kind of hot air-generating device, such as a hair drier and a hot-air gun for stripping paint.

Abstract: A method and system for flue gas recirculation is disclosed which will minimize NOx production from hydrocarbon combustion. In the present invention a furnace having an oxygen-bearing primary source of combustion air, a mixing chamber, a combustion chamber in downstream communication with the mixing chamber and an exhaust section downstream of the combustion chamber is provided with a flue gas recirculation line. The recirculation line establishes communication between the exhaust section and the mixing chamber for the return of combustion products as a secondary source of combustion air which is relatively lean in oxygen and is combined with the primary source of combustion air in the mixing chamber. The ratio of flow rates for the primary and secondary sources of combustion air is controlled by a signal generated by a sensor which senses the oxygen concentration in the mixing chamber.

Abstract: A gas combustion type dryer is provided wherein a liquefied gas is ignited by electric discharge and combusted to forcibly blow out heated air by a fan, while eliminating adverse effects of remaining heat after the stop of fan operation and maintaining the gas pressure constant. A temperature controller is provided together with a combustor within a blowing barrel of a dryer main body, and a pressure regulator is provided together with a liquefied gas tank within a handle. The pressure regulator is coupled to the combustor with the temperature controller interposed therebetween.

Abstract: In a burner assembly for location within an air supply housing for a heater and disposed for inducing the movement of air through a blower and into and around a burner assembly during heater operation to create a supply of heated air for a space to be warmed, the burner assembly being of the type having opposite side walls, and upper and lower tiered baffles, each having connected thereon an air balancing baffle, forming cavities therebetween, with the combination of the air balancing baffles and tiered burner baffles forming a combustion chamber therebetween for reception and combustion of gas delivered from a gas manifold arranged approximately at the intake end of the burner assembly, with a shroud arranged above and below the upper and lower tier baffles for directing air into an intake at the back of the gas manifold, and for selectively diverting and directing air through the air balancing baffles, and through the burner baffles, into the combustion chamber.

Abstract: A heating mantle for heating materials in a retort includes a housing for a chamber holding the retort, a source of hot gases and a porous wall. The gases pass through the porous will which heats the retort. The heating takes place in a so-called porous wall radiation barrier process. In the first step, the gases passing through the wall heating it be convection. In the second stage, the heated porous wall radiates heat towards said retort.

Abstract: A fired heater in which at least a portion of a tube extends within an enclosure and receives fluid from a manifold disposed externally of the enclosure via a conduit. At least a portion of the conduit extends within the enclosure so that, when heat is applied to the enclosure for heating the fluid the fluid in the conduit is preheated.

Abstract: The apparatus for heating and generating infrared rays has a heating apparatus for indirectly heating a heat medium such as air and water, by a combustion heat and a radiator, wherein a branch combustion gas passage is provided for a combustion gas passage through which the combustion gas in said heating apparatus flows at temperatures of 400.degree. C. or more and 800.degree. C. or less, and said branch combustion gas passage and said radiator are connected.

Abstract: Process and apparatus employing flame ashing for stripping photoresist from a substrate in the manufacture of a semiconductor device. The substrate is exposed to the flame with the photoresist to be removed being contacted directly by the flame to oxidize, or ash, the photoresist. The flame is produced by burning oxygen and a gaseous fuel, and the rate of ashing is increased by preheating the substrate. Nitrogen, a nitrogen-containing gas or an inert gas is added to the fuel to provide a cooler flame and an improved ashing rate. In one disclosed embodiment, the oxygen and the gaseous fuel are discharged through a plurality of spaced apart openings in a burner and the substrate is moved relative to the flames to successively ash different portions of the photoresist.

Abstract: In a burner assembly for location within an air supply housing for a heater and disposed for inducing the movement of air through a blower and into and around a burner assembly during heater operation to create a supply of heated air for a space to be warmed, the burner assembly being of the type having opposite side walls, and upper and lower tiered baffles forming a combustion chamber for reception and combustion of gas delivered from a gas manifold arranged approximately at the intake end of the burner assembly, a shroud arranged above and below the upper and lower tiered baffles, for directing air into an intake at the back of the gas manifold, and for diverting air through the baffles into the combustion chamber, a diverter arranged at the back end of the gas manifold for directing incoming air between the shroud and the tiered baffles, and a deflector arranged at the upper front of the top of the shroud, to delay the passage of air into the path of the combusting gases, with the sides of the combustion

Abstract: A burner unit is used for firing, for example, formed ceramic bodies in a firing furnace. The burner unit includes a burner tile assembly provided in a furnace wall and a burner connected to the burner tile assembly and provided out of the firing furnace. The burner is integrally provided with a connecting burner tile assembly having a tapered step. The burner tile assembly is also provided with a tapered step. The tapered steps of the connecting burner tile assembly and the burner tile assembly are connected through a sealing material to connect the burner to the burner tile assembly. With this arrangement, the burner unit reduces heat dissipation due to a burner construction and enables maintenance to be effected during operation of the burner.

Abstract: An air control assembly for a fuel burner having a combustion chamber and a nozzle includes a control device which controls the amount of air that flows into the burner and an assembly dependent on fuel pressure which actuates the control device. A fuel inlet path is provided for communicating fuel to the nozzle and a fuel return path is provided for communicating excess fuel away from the nozzle. The assembly dependent on fuel pressure includes a piston and rod device adapted for reciprocation in a piston chamber. A nozzle block is provided in which the piston chamber is defined and the nozzle is supported.

Abstract: A ceramic gas burner for a combustion chamber of a hot-blast stove of a blast furnace has parallel vertical supply ducts for the two combustion components (gas and air). One duct opens upwardly at a first outlet opening which is rectangular in shape. The second duct opens at second outlet openings which are on each side of and above the first outlet opening and whose outflow directions are oblique to that of the first outlet opening. Recesses extend in each long side of the first opening towards the second openings. To improve the mixing of the two components, opposite each recess there is another such recess in the other long side of the opening.

Abstract: A ceramic burner for a hot blast stove, having a burner head where the combustion components mix and an air duct and a gas duct beneath the head for conducting combustion components to the head, the gas duct is within the air duct and is bounded by a wall. To prevent stresses due to differences of thermal expansion at least one horizontal sliding joint is arranged in the bounding wall of the gas duct closely under the burner head. The air duct is bounded by a brickwork wall which continues upwardly past the burner head and forms a combustion chamber. The burner head projects over and is supported by a shoulder in this wall and an essentially vertical expansion joint is located between the burner head and the wall.

Abstract: This invention discloses a heating and cooling system for buildings, such as poultry buildings, that provides clean, filtered gas fuel, efficiently burns gas fuel by providing adjustable airflow profile plates that blocks cold air from reaching the inside of the building and creates an air mixture control for the burning flame on the burner, that provides rain gutter means that prevent rain moisture from being drawn into the air stream of the unit and that has an actuating means coupled to the pilot light that assure safe operation by shutting off the gas fuel valves in the event of loss of flame in the pilot.

Abstract: An apparatus for heating air using a regenerable hydrogen containing liquid fuel. The apparatus includes a hydrogen reduction catalyst, a semipermeable membrane through which hydrogen may pass and an oxidation catalyst which forms a combustion area. The hydrogen reduction catalyst is proximate to the combustion area. A displacement means transfers the hydrogen containing liquid fuel to the reduction catalyst where combustion heat decomposes the liquid fuel into hydrogen and decomposition products. The hydrogen passes through the semipermeable membrane mixes with air and is combusted at the oxidation catalyst. The decomposition products are transferred to a condensing means whereby they are condensed.

Abstract: A compact forced air heater comprises a combustion chamber mounted in a housing, a burner module mounted across a back open end of the combustion chamber adjacent a back wall of the housing for producing heated air in the combustion chamber, an air intake in a front wall of the housing, and a high speed (3000 rpm) forced air blower mounted between the combustion chamber and the housing front end wall. The burner module includes a flameholder plate having a central primary air hole and circular rows of staggered secondary air holes surrounding the primary air hole. A flamespreader plate is mounted on the flameholder plate opposite the primary air hole, and an elongated right-angle burner tube, having a flattened locating-and-orienting end and at least one burner orifice in a sidewall of the tube, is located on an opposite side of the flameholder plate with the burner orifice aligned with the primary air hole and the flamespreader plate. An ignitor and a thermocouple are also mounted on the flameholder plate.