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7836856 |
Water heater with condensing flue
A water heater has a burner positioned below a vertical centrally located flue with heat exchange capacity enhanced by a multiplicity of rectangular metal fins which are welded on the inside of the...
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7634977 |
Gas water heater
A gas water heater includes a power burner, a flue tube, an exhaust plenum, and a draft hood. The flue tube includes a portion that describes at least a 360° loop. Products of combustion are ...
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7311064 |
Gas water heater damper/baffle
Apparatus for improving the efficiency of a water heater includes a combination damper assembly and heat transfer baffle. The damper assembly includes a plurality of movable damper with each damper...
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7100541 |
High efficiency tank type continuous flow and self cleaning water heater
A water heater comprising a closed tank having a water inlet for connection with a water supply, and a hot water outlet connected to the tank interior; a flue pipe extending vertically through the...
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7000572 |
Telescopic baffle for water heater
Water heater apparatus for improving the efficiency of a water heater having a tank, a burner, and a flue with the flue being disposed within the tank for evacuation of burn gases therethrough...
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6957629 |
Water heater flue with improved heat transfer
A water tank has a central flue to which clips are welded. The clips define baffles and are welded to have a greater heat transfer area where they are joined to the central flue. The individual...
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6675746 |
Heat exchanger with internal pin elements
A heat exchanger/heater comprising a tubular member having a fluid inlet end, a fluid outlet end and plurality of pins secured to the interior wall of the tube. Various embodiments additionally...
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6584940 |
Flue pipe control
An improved flue pipe construction particularly adapted for a fuel fired water heater is disclosed which serves to reduce or minimize heat loss when the water heater is in a standby mode. The flue...
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6578531 |
Gas appliance with flash suppressor
A water heater having a barrier for forming an enclosure around a lower portion of heater. The barrier has an inside wall, an outside wall and a space between the inside and outside walls. There is...
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6546897 |
Thermodynamically activated flue damper
The invention is directed to a thermodynamically activated flue damper for a gas water heater that includes a flue damper for controlling the passage of exhaust gases through the flue; and a...
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6422179 |
Water heater flue system
A water heater includes a water tank, a combustion chamber below the tank and communicating with the flue tube, and a flue system. The flue system includes a flue tube, and V-shaped fins that are...
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6354248 |
Heat exchange element for a water heater flue
The present invention relates to heat exchange elements and heat exchange assemblies and water heaters containing such heat exchange elements. The inventive heat exchange elements include an...
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5799622 |
Furnace heat exchanger tube cleaning system
A furnace heat exchanger tube cleaning apparatus is described. The furnace comprises a combustion chamber for generating heated gases including combustion products, a water jacket containing a...
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5787846 |
Variable flow volume control baffle for water heater
Apparatus for improving the efficiency of a water heater having a tank, a burner and a flue, the flue being disposed within said tank for evacuation of burned combustion gases therethrough with...
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5687677 |
Heat exchange tube and method of making same
An elongated heat exchange tube and method of making same are disclosed wherein a pair of elongated generally right-angle metallic wall members are adapted for mirror image connection to form an...
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5666942 |
Flue insert to control exhaust gases
A flue insert which includes a helical vane having an open center axial area and means for mounting the helical vane within a furnace flue stack. The helical vane rotates counterclockwise, i.e. it...
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5596979 |
Sound inhibitor baffles
A baffle is located in a recessed location relative to the inlet of a heat exchanger tube and facing the burner. The baffle is made of high temperature ceramic foam and has a plurality of flutes...
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5544625 |
Flue baffle for gas-fired hot water tanks
A flue baffle for use in a hot water tank flue through which flue gases from a burner chamber are discharged. The baffle is comprised of an elongated flat undulated metal strip having a securable...
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5516278 |
Forced draft mixer and burner assembly with pressure distribution device
Combustion apparatus comprising a combustion chamber, a forced draft mixer and burner assembly extending into the combustion chamber, the assembly including a mixing tube having an open end, an...
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5437247 |
Drop down corbelling (LAW029)
The present invention provides a mechanism device for preventing gas channeling between the sidewall and a heat exchange tube bundle located in the convection section of a horizontal tube fired...
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5365887 |
Ultra-high efficiency on-demand water heater and heat exchanger
The heat exchange structure comprises a series of tubes arranged in a circular pattern extending between upper and lower manifolds. Water flows from the upper manifold through these tubes to the...
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5355843 |
Heat transfer mechanism with thin filaments including ceramic high temperature heat exchanger
A radiative heat transfer mechanism in a furnace having burners through which pulverized coal and air are burned producing combustion gases and contaminants. A plurality of elongated conduits are...
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5090369 |
Heat-absorbing/heating device with high efficiency and a supporting device therefor
A heat-absorbing/heating device with high efficiency and a supporting device thereof, wherein a plurality of spaced heat-absorbing members are disposed on a heat-absorbing surface of the...
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4989549 |
Ultra-low NOx combustion apparatus
A combustion apparatus for staged combustion inside the Morison tube of a firetube boiler for lowering the concentration of NOx in the exhaust gases. Combustion occurs in a first and second stage,...
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4971025 |
Gas-powered apparatus for producing warm water and for heating an enclosed space
This gas-powered apparatus comprises a substantially cylindrical combustion chamber having an inlet for the combustion air connected to the outside and an upper outlet connected to a burned gas...
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4969420 |
Magnesium pressure vessel water tank
This invention pertains to a magnesium water heater and a method of fabricating the same. The magnesium water heater of the present invention can be heated by an electric resistance element or a...
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4953510 |
Apparatus and method for heating water
Disclosed is an improved water heater and method of heating water retained in a storage tank having a flue passing through it. The apparatus and method directs hot gases flowing upwardly along the...
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4953535 |
Flue control device
A device for adjustably restricting the flow of exhaust gases in a furnace flue to conserve fuel is disclosed. It comprises two interlocking pipe sections and a helical element having one end fixed...
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4705106 |
Wire brush heat exchange insert and method
The present invention provides heat exchanger apparatus and method including a tubular heat transfer surface, a heat transfer fluid which is made to pass along the surface, and a wire brush heat...
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4702226 |
Hot water tank water preheater
A preheater for a conventional gas-fired water heater having an outer container, an inner reservoir, water conduits in fluid communication with the reservoir and openings in the outer container...
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4702312 |
Thin rod packing for heat exchangers
The present invention provides heat exchanger apparatus and method for enhancing heat transfer between a fluid and a tubular heat exchanger surface. The invention involves a heat transfer surface,...
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4671212 |
Gas fired heat exchanger for hot water with bimetallic scouring baffle
A gas fired hot water heater includes a housing enclosing an internal chamber divided by a vertical partition into two compartments, the partition having a top edge spaced below the top of the...
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4662350 |
Heating apparatus for a water heating for small rooms
A hot water heater for trailers or mobile homes and the like, wherein increased heat capacity is provided due to exposure to combustion gases over large heating surfaces and including the use of...
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4633821 |
Liquid heating apparatus
Apparatus is provided for heating liquid, utilizing a power burner for burning a combustible fuel. Elongated pipes comprising a flue and a water jacket extend horizontally from the power burner,...
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4624216 |
Furnace for burning oil or gas
A furnace for burning oil or gas. The furnace has a vertical, cylindrical water jacket, with a combustion chamber being disposed at the upper end of the furnace, and a flue gas collector being...
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4617870 |
Method of accelerating radiative transfer
A method of accelerating radiative transfer is characterized in that a radiation acceleration plate is interposed between heat absorption pipe trains or planes disposed opposite to each other and...
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4612879 |
Hot water heater and steam generator
In a water tube boiler comprising a housing enclosing tubes bent to form vertical chambers successively traversed by rising hot combustion gases, the tubes being connected at the bottom to the...
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4480631 |
Apparatus for delivering heated fluid medium
Apparatus for delivering hot water includes a vessel for releasably containing water and a heat generator compartment in heat transfer relation to the vessel. A conduit in the vessel circumscribes...
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4480590 |
Boiler having a pumping effect
A boiler having a pumping effect comprises a casing (2) which includes an outer and an inner, annular liquid compartment (3 and 4, respectively) the outer of which has a greater extent in height...
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4471725 |
Heat exchanger cleaner
A solid fuel boiler has a heat exchanger above the fuel bed, and the heat exchanger is provided with an easily operable cleaner.The heat exchanger comprises a plurality of vertically disposed tubes...
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4458665 |
Heat exchanger with baffle plates
This disclosure is directed to a heat exchanger which includes a coil through which a heat exchange medium, such as Freon, is circulated between an inlet and an outlet, the coil defining an...
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4453496 |
Multitubular once-through boiler
A multitubular once-through boiler which exhibits an excellent heat transfer efficiency and requires a relatively smaller installation area. The multitubular once-through boiler comprises a...
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4427058 |
HRSG Sidewall baffle
In a non-contact heat exchanger such as a heat recovery steam generator, the performance efficiency is dependent upon full utilization of the available hot gas flow. In a heat recovery steam...
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4412558 |
Turbulator
A turbulator comprising a strip of metal formed into a generally zig-zag longitudinal extending element for insertion into a fire tube of a furnace which so deflects gases passing through the tube...
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4401101 |
Wood-fired boiler and storage system
A wood-fired boiler and hot liquid storage system includes a top-vented storage tank for the liquid, a firebox supported within the tank at a level for complete immersion within the liquid, with...
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4388066 |
Radiation shield and method of use
A coiled arrangement of pipes convey a heated medium, such as a slurry, into, through, and out of a heater or fire box provided with an arrangement of high velocity burners. The heater is fired to...
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4380215 |
Liquid fuel-fired water heating tank
A water heating tank is disclosed which includes an annular water receptacle having a vertical passageway extending centrally therethrough and opening at its lower end into a plenum chamber beneath...
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4367697 |
Multi-zone boiler for firing with solid and liquid fuel
A furnace for alternatively burning solid or liquid fuels is disclosed. The furnace includes an oil burner and a solid fuel burner as well as a combustion chamber for the burning fuel. The hot...
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4356794 |
Hot water boiler
A hot water boiler, e.g. for central heating, has two castings which contain water passages and are connected together to enclose a combustion chamber and above it a flue. From the flue, the burned...
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4344479 |
Process and apparatus utilizing common structure for combustion, gas fixation, or waste heat recovery
An enclosure containing rotating blades for mechanical stirring of gaseous fluids may be a heat exchanger, flue gas energy recovery device, gas generator or combustion device. A high rotational...
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