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Match Document Document Title
7258080 Fuel-fired dual tank water heater having dual pass condensing type heat exchanger  
A fuel-fired commercial water heater has upper and lower communicated tank portions which are separated by a plenum forming a vertically intermediate portion of a dual pass condensing type heat...
6868805 Horizontally oriented combustion apparatus  
A combustion chamber for a chiller includes a burner and igniter which are maintained in the horizontal position. The horizontal positioning is implemented by a steel casting, which includes a...
6725811 Water heater with low NOx fiber matrix burner  
A water heater having improved operating characteristics and lower costs of manufacturing is described. The water heater has an unified combustion chamber and burner construction with a ceramic...
6698385 Combustion chamber shield for hot water heaters  
A shield for a combustion chamber of a hot water heater is described. The combustion chamber is a sealed or not combustion chamber and the metal heat shield encircles and is spaced about the burner...
6622661 Fuel-fired heating appliance with dilution air/flammable vapor bypass tube and elevated combustion air inlet  
A fuel-fired heating apparatus, representatively a forced draft or natural draft gas-fired water heater having a combustion chamber, is provided with a flammable vapor control system that...
6622660 Blower mixing tee  
An exhaust system for withdrawing a supply of exhaust gases from an exhaust flue of a heater and expelling the exhaust gases to atmosphere at a remote location that includes a mixing tee for mixing...
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...
6553948 Water heater  
In a water heater, an outer casing includes a hollow flue tube that extends vertically from an inner periphery of a bottom wall thereof, and an outer surrounding wall that extends uprightly from an...
6435140 Gas-fired heaters with burners having a substantially sealed combustion chamber  
A gas-fired combustion apparatus includes a burner disposed in a substantially sealed combustion chamber and a permeable flexible member arranged to suppress pressure fluctuations within the...
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...
6418884 Fuel-fired heating appliance having flame arrestor plate with associated scale deflector shield  
A fuel-fired heating appliance, representatively a gas-fired water heater, has a combustion chamber with a flame arrestor plate forming a bottom wall thereof. The arrestor plate has a spaced series...
6360699 Device for heating fluid  
Device for heating fluid, comprising: a first section for heating the fluid in which fuel and air are mixed and combusted; a second section for heating the fluid which is disposed substantially in...
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...
6334411 High efficiency, glass-lined, combination space and hot water heater  
A combination space and hot water heater is comprised of an inner tank having an outer casing spaced therebout with insulation being interposed between the casing and the inner tank. The inner tank...
6311646 Hot water heater  
A hot water heater having a housing with a top chamber, a bottom chamber and a main tank. A cold water inlet pipe runs into the top chamber and extends into the tank. The cold water inlet pipe...
6283067 Potable water temperature management system  
A potable water temperature management system includes a device that produces waste heat and that has a primary purpose other than heating potable water. The waste heat from the device is used to...
6161506 Pulsed air combustion high capacity boiler  
A pulsed combustion high capacity boiler has air inlet flapper valves at an inlet air decoupler toward a combustion chamber, with a fuel supply and an ignitor upstream of the combustion chamber...
6055944 Heating device  
A storage water heater including a vessel for accumulating a volume of water which is to be heated, said vessel having water inlet and outlet means, at least one gas burner, an exhaust gas outlet...
6053130 Power vent water heater with electronic control system  
A water heater of the invention includes a water container; a combustion chamber adjacent the water container; a burner associated with the combustion chamber; a flue connected to the combustion...
6019069 Gas-fired heaters with burners which operate without secondary air and have a substantially sealed combustion chamber  
A gas-fired burner apparatus includes a porous combustion surface disposed in a combustion chamber substantially sealed to prevent entry of secondary air. A subatmospheric pressure is maintained in...
5970923 Tank structure for hot-water supply unit  
A tank structure of a hot-water supply unit capable of permitting tap water under a high pressure to be supplied thereto without using any safety mechanism. An inner barrel of a tank body is formed...
5950573 Power vented water heater with air inlet  
A water heater comprising a water container; a combustion chamber adjacent the water container; a burner associated with the combustion chamber; a flue connected to the combustion chamber; a blower...
5937796 Gas apparatus for heating fluids  
The invention relates to an apparatus for heating fluids which includes a combustion chamber (20) in which the head (21c) of the burner with the burner openings (39) for the flames is juxtaposed...
5924390 Water heater with co-located flue inlet and outlet  
A blower draws air through an inlet duct from outside a building or dwelling and injects air and fuel into a sealed combustion chamber where they are ignited and burned within a ceramic crucible...
5913675 Low NO.sub.x gas burner  
A gas burner adapted to discharge said fuel at its the periphery for combustion, includes upper and lower concave plates secured together to define a chamber and an outer periphery having a...
5881681 Water heating system  
A water heating device comprising (a) combustion means for igniting a combustible mixture of air and gas for heating water; (b) heat exchanger means for providing heat transfer between the hot...
5871006 Hot water heating system  
A hot water heating system having a water tower with a cold water inlet at the upper end and a hot water outlet at the lower end has a large diameter combustion inlet opening in the sidewall. A...
5845632 Vent damper including pivot poppet  
A vent damper is provided for limiting the flow of ambient air through the central core of a hot water heater having a combustion chamber, the central core forming an exhaust port leading to an...
5826569 Low NO.sub.x water heater with finned burner  
A low NO x water heater burner including a burner body having opposed surfaces; and a multiplicity of spaced apart energy absorbing fins connected to at least one of the surfaces and positioned to...
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...
5797356 Simplest high efficiency universal water heater  
A water heater having an insulated tank with a vertical flue pipe from a bottom to a top with two, bottom and top openings. Under the tank is located an air-blast gas burner and low pressure (from...
5791298 Water heater with low emission gas burner  
An atmospheric, low emission gas burner within the combustion chamber of a hot water heater in which the combustion chamber is sealed against entry of air except for the air/gas mixture entering...
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...
5775268 High efficiency vertical tube water heater apparatus  
A water heater apparatus is shown which includes a water heating tank having generally cylindrical sidewalls with upper and lower ends, each of which is closed by a transverse wall section to...
5697330 Power-vented, direct-vent water heater  
A power vented water heater has a radiant gas burner located in a combustion chamber disposed beneath the storage tank portion of the water heater, and a draft inducer fan supported above the top...
5690061 Water heater with expansion tank  
A hot water heater has an expansion tank below the water tank and aligned with the water tank, so both water tank and expansion tank occupy the same floor space. The expansion tank is connected to...
5678533 Hot water heater with separator structure  
A hot water heater comprises a tank having top and bottom walls and a peripheral wall having an axis, the tank being adapted to contain water at a predetermined pressure above atmospheric pressure....
5660165 Back-up heater  
An apparatus for heating a domestic water supply including a glass-lined storage tank to contain the domestic water supply. A combustible fuel burner is positioned to heat the domestic water supply...
5588399 Flue for water heater  
A water heater has one or more flue openings through the tank to allow flue gases to pass through the tank and heat water in the tank. The flue openings are constricted at two or or more discrete...
5586547 Instantaneous gas water heater  
An instantaneous gas water heater comprising a control panel, a heat transfer section, and a blower section. The control panel includes an electronic controller, a gas solenoid valve, and a means...
5575273 Balanced flue outdoor water heater  
An outside balanced flue water heater including a water tank; a jacket surrounding the water tank; a combustion chamber containing a burner positioned adjacent the water tank; a flue extending from...
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...
5511516 Water heater with low NO.sub.x ceramic burner  
A water heater having improved operating characteristics and lower costs of manufacturing is described. The water heater has an unified combustion chamber and burner construction with a ceramic...
5494025 Heat exchanger for multi oil furnaces  
A heat exchanger for a multi oil furnace is disclosed wherein the external cabinet shell houses a central ventilation chamber divided into inlet and outlet sides by a generally vertical barrier....
5494003 Water heater with perforated ceramic plate infrared burner  
A water heater of simplified construction which incorporates a unique infrared gas burner performs with notable thermal efficiency and suppression of the combustion pollutants, nitrogen oxides. The...
5490495 Cleanout header for multi oil furnaces  
A multi oil furnace is disclosed wherein the front door is sealable against the burner chamber and against a lip extending around the circumference of a front header formed in the cabinet shell to...
5485879 Combined water heater and heat exchanger  
A system for heating two independent water supplies having a water storage tank adapted to contain a first, potable water supply and a coiled heat exchange tube mounted within the tank to contain...
5437248 Fire tube boiler  
A fire tube boiler having a combustion chamber equipped with a burner, and a group of fire tubes provided adjacent to the combustion chamber. The fire tube boiler further includes a heat exchanger...
5393221 Heat-activated flue damper actuator  
A heat activated flue damper actuator employing an assembly of shape memory alloy springs with linkages to a conventionally designed contemporary flue damper. The combination of the spring...
5355842 Gas hot water heater  
The invention is concerned with a gas hot water heater intended for installation in a wall and including a combustion chamber from which are guided heating gas tubings within a water-carrying...
Matches 1 - 50 out of 128 1 2 3 >