Class 126/99A - Tubular heater

Subclass of Class 126 - Stoves and furnaces
No. of patents: 51
Last issue date: 09/09/2008

Number	Title	Issue Date
7422429	Heat exchange furnace and its manufacturing process A heat exchange furnace includes a combustion furnace module, a passageway module disposed around and connected removably to the combustion furnace module, and a gas-guiding unit including upper and lower guiding modules connected respectively to upper and lower end...	09/09/2008
7393206	Heat exchange furnace with serpentine gas flow path disposed within heat exchange space A heat exchange furnace includes a surrounding wall disposed around a combustion furnace unit so as to define an annular heat exchange space therebetween. Upright buffer plates divide the heat exchange space into a plurality of air chambers communicated with each ot...	07/01/2008
7363882	Condensation removal for use with a draft inducer A condensation removal apparatus is disclosed. The condensation removal apparatus is used with a hot water heater wherein the hot water heater produces a fuel exhaust. The fuel exhaust from the hot water heater is provided to a draft inducer through an inlet which i...	04/29/2008
7043921	Tube cooled combustor An innovative cooling tube assembly is disclosed for use in cooling the liner of a combustor in a gas turbine engine. Each cooling tube has a serpentine shape that conforms to the contour of the liner as the tube extends from one end of the combustor to the other to...	05/16/2006
7013954	Thermosiphon A thermosiphon which can be manufactured easily at low costs, having excellent resistance to pressure, without the circulation of a working fluid being hindered. A condenser 3 includes a condensing section 4 composed of extruded members in which a plur...	03/21/2006
6758208	Flexible gas-fired heat exchanger system A compact, highly flexible and efficient, multi-positionable, multi-dimensional and multi-stage gas-fired heat exchanger system as described. The system is connectable in a forced air duct regardless of the angular position and size of the duct. The heat exchanger c...	07/06/2004
6044837	Intertwined helical heat exchanger A combustion and heating chamber into which a fluid is pumped under pressure is provided. A burner is positioned in the combustion and heating chamber to provide a heat load to the pressurized fluid in the chamber. As the fluid is heated its internal pres...	04/04/2000
6026801	Plug core heat exchanger An apparatus (10) for transferring heat to a fluid from combustion gases including a housing (12) extending between a first end (14) and a second end (16). The apparatus further includes a burner (24) in which a combustible gas and oxygen react to form ho...	02/22/2000
5649529	Low NO_x combustion system for fuel-fired heating appliances 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...	07/22/1997
5505252	Heat exchanger A heat exchanger which can prevent the increase of an internal resistance by baffle plates, can make the gradient of a heat exchange rate between an inlet side and outlet side more gradual, and can make uniform a temperature distribution of a fluid flowin...	04/09/1996
5408986	Acoustics energy dissipator for furnace The present invention involves a combustion box of a gas furnace which experiences oscillating combustion. The combustion box employs an opening in the housing which is tautly covered with a diaphragm made of elastic material such as silicone rubber. The ...	04/25/1995
5301654	Heat-exchanger especially for forced air furnaces A forced air furnace (11) has a heat exchanger (35) with one or more tube pack assemblies (10). Each tube pack assembly (10) has a burner (21) situated to fire into a primary fire tube (30) which is mechanically connected through a transition cap (36) to ...	04/12/1994
5293860	Standing pilot furnace with vented vestibule An induced draft, fuel-fired furnace having a heat exchanger with an inlet and an outlet includes a vent having an inlet, a burner, and a vented vestibule in fluid communication with the vent. A blower has an inlet in fluid communication with the heat exc...	03/15/1994
5279278	Burner unit A burner unit for heating a gaseous medium includes a heat exchanger provided with tubes, a space between the tubes connected on the upstream side to a feed duct for the gaseous medium; a combustion chamber connected to the downstream side of the space be...	01/18/1994
5244381	NO_x flame spreader for an inshot burner 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 redu...	09/14/1993
5222476	Low NOx aspirated burner apparatus A low NOx burner assembly of a fuel-fired heating appliance is supplied with an air/fuel mixture having a substantially less than stoichiometric air-to-fuel ratio. The air-rich mixture is partially combusted to create primary combustion products disposed ...	06/29/1993
5199416	Hot air heat exchanger A hot air heat exchanger comprises a heat exchanger housing having a floor, which is essentially formed by a ceiling of an outer chamber and has at least one heat exchanger pipe extending from the floor to a ceiling element having exhaust openings, each p...	04/06/1993
5105797	Solid fuel burning stove A solid fuel burning stove is provided and includes a housing within which a combustion chamber is located. The combustion chamber receives combustion air via an adjustable inlet formed through a channel member running along the base of the housing. The c...	04/21/1992
5062790	Burner sound reduction enclosure A furnace having a housing, a combustion chamber within the housing, and a burner associated with the combustion chamber is provided with a sound enclosure housing including a muffler portion. The muffler portion comprises an elongated serpentine passage ...	11/05/1991
5038750	Air heating apparatus A space heating appliance employing a radiant burner that burns a gaseous fuel and a plurality of heat pipes to transfer heat produced by the burner to the air to be heated. The appliance is adaptable for use in outdoor "packaged" units, together with an ...	08/13/1991
5022379	Coaxial dual primary heat exchanger Basically the present invention in its most simple form or embodiment is directed to a heat exchanger which provides for at least two heat exchange surfaces and which has the combustion of the fuel, which generates the heat, take place within the heat exc...	06/11/1991
4991396	High performance burner The invention relates to a high performance burner whose performance can be controlled in a stepless manner. To this end, a premixing chamber is upstream of a burner nozzle that extends into a combustion chamber. Fuel is supplied in controllable amounts t...	02/12/1991
4974579	Induced draft, fuel-fired furnace apparatus having an improved, high efficiency heat exchanger An induced draft, fuel-fired upflow furnace is provided with a compact, high efficiency heat exchanger having horizontally spaced apart inlet and outlet manifold structures which are innerconnected by a horizontally spaced series of vertically serpentined...	12/04/1990
4960102	Fuel-fired condensing type forced air heating furnace A fuel-fired, condensing type forced air heating furnace is provided with an improved hot combustion gas-to-air heat exchange system which includes a generally drum-shaped primary heat exchanger having an outlet end connected to a first end of a transfer ...	10/02/1990
4938283	Bell orifice plate for inshot combustion furnace A belled orifice inlet plate is provided for an induced draft combustion furnace heat exchanger of the type in which an inshot burner produces a hot gaseous combustion that is injected through an opening in the inlet plate into a combustion zone in the he...	07/03/1990
4905661	Heat exchanger The present invention in its most simple form or embodiment is directed to a heat exchanger which provides for at least two heat exchange surfaces. The two heat exchange surfaces are defined by an inner wall or inner shell which separates a combustion reg...	03/06/1990
4777928	Efficient, pollution free, woodburning furnace A self-contained, free standing, on-demand, woodburning furnace including a firebox (52), including means to force combustion gases through a manifold (68), a hot air gathering plenum and means to selectively force feed the fire (34, 36, 38, 40, 68) and d...	10/18/1988
4776320	Device for inhibiting NO_x formation by a combustion system A device is disclosed for use in a combustion system to inhibit formation of oxides of nitrogen (NOx) by the combustion system thereby reducing NOx emissions from the combustion system. The device is made of a material, such as stain...	10/11/1988
4603680	Furnace inducer outlet box assembly A furnace flue gas draft inducer outlet box assembly is provided for connecting an inducer housing to a vent pipe, and comprises a plurality of differently directed openings to allow the vent pipe to be connected thereto in one of a plurality of different...	08/05/1986
4579102	Biomass heat exchanger furnace A hot air heat exchanger furnace that uses crop residue as a fuel source is provided for producing the heat required for various purposes, such as the drying of grains, peanuts, soybeans and other materials and for the heating of buildings. The furnace in...	04/01/1986
4577615	Heat pipe central furnace A heat pipe heat transfer structure for use in a furnace wherein individual heat pipes are arranged in a series for successive heat transfer association with the hot products of combustion of the furnace. The heat transfer enclosure defines successively a...	03/25/1986
4558689	Combustion gas heat recovery apparatus A secondary heat exchanger is positioned within a cold air return plenum of a forced air gas or oil fired furnace to preheat cold air drawn into the furnace through the cold air plenum. A heat recovery flue pipe is connected between a primary flue pipe of...	12/17/1985
4557248	Wood and gas fired furnace A furnace for wood log fuel having apparatus which automatically inserts the logs into the furnace combustion chamber. The log fuel is retained in a sloping ramp storage compartment. Electrical circuitry controlled by a thermostat operates to move a log i...	12/10/1985
4557249	Compact high efficiency furnace This invention relates to a compact high efficiency furnace having a cylindrical combustion chamber and a fin and tube type heat exchanger substantially parallel, transverse to the furnace air flow, and closely spaced in the air flow direction with no oth...	12/10/1985
4518117	Furnace structure Furnace structure including an outer enclosure divided into a cool air chamber and a hot air chamber separated by a combustion gas chamber through which heat exchange tubes pass air between the cool air chamber and the hot air chamber. The furnace structu...	05/21/1985
4515145	Gas-fired condensing mode furnace A gas-fired, condensing mode, hot air furnace has an exhaust passage for carrying the products of combustion from a gas burner to an exhaust flue. A heat exchanger is provided in the exhaust passage for extracting heat from the products of combustion. An ...	05/07/1985
4478158	Condensing furnaces An improvement in a condensing furnace where gaseous products of combustion are ducted through fin tube condensers that act to heat incoming air. The improvement involves spraying water into the products of combustion upstream of the fin tube condenser, s...	10/23/1984
4478206	Furnace having water vapor-condensing secondary heat exchanger A compact secondary heat exchanger, installed above the preliminary heat exchanger in a down draft-type gas burning furnace, so greatly reduces combustion gas temperature as to recover a portion of the latent heat in the water vapor created by burning the...	10/23/1984
4476850	Noise reducing heat exchanger assembly for a combustion system A noise reducing heat exchanger assembly for a combustion system is disclosed. The heat exchanger assembly includes a plurality of side by side heat exchangers each having a single inlet for an inshot burner. An auxiliary port is located just above each b...	10/16/1984
4449510	Biomass heat exchanger furnace A hot air heat exchanger furnace that uses crop residue as a fuel source is provided for producing the heat required for various purposes, such as the drying of grains, peanuts, soybeans and other materials and for the heating of buildings. The furnace in...	05/22/1984

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Class 126/99A - Tubular heater