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| Number | Title | Issue Date |
| 8176882 | Boiler for combustion of solid fuel A boiler for combustion of solid fuel, especially biomass, a first combustion stage with a primary air supply, an igniter, a fuel supply, a second combustion stage a burn-up and calcination space, a combustion chamber which is upwardly open and with a flue, the burn... | 05/15/2012 |
| 8011329 | Automatically controlled outdoor pelletized bio-fuel-burning hydronic heater A heating system has a heating unit with a combustion chamber for burning wood pellets or other pelletized fuel. The heating unit is controlled by a process control module that automatically keeps all operating functions within predetermined limits for safe, efficie... | 09/06/2011 |
| 7762216 | Wood fired hot water heating system A hot water heating system is provided for heating water that is utilized to heat a structure such as a tobacco barn. The hot water heating system includes a base and a vessel, movably mounted on the base, for holding water supported on the base. The vessel is movab... | 07/27/2010 |
| 7438024 | Wood-burning boiler A wood-burning boiler is provided, comprising a combustion chamber having a first air intake, and being adapted for holding combustible wood. An exhaust chamber is fluidly coupled to the combustion chamber, and is adapted to receive burnt gases from the combustion c... | 10/21/2008 |
| 7322317 | Heat-recovery boiler The invention relates to a heat-recovery boiler (3) consisting of a tube bundle heat exchanger (7) which is incorporated into a pressure vessel (2) downstream of a gasification device. Displacement bodies (9) are inserted into pipes which... | 01/29/2008 |
| 7226284 | Method and apparatus for controlling a burning flame A method and apparatus for controlling a candle flame. A candle flame may be provided in a controllable environment, e.g., an enclosed area formed at least in part by an air-tight cover. Air may be forced into the enclosed area by an air movement device (e.g., a fan... | 06/05/2007 |
| 6880547 | Wood burning swimming pool heater A swimming pool heater that heats a private swimming pool and can be used to provide heating for a house, a cottage or a commercial swimming pool. Wood, that is often found around pools, is used as primary fuel. This oven has a cylindrical external appearance and is... | 04/19/2005 |
| 5357906 | Submersible liquid-to-liquid heat exchanger A single port, internal liquid heat exchange assembly for heating domestic water from a free-standing, low pressure wood fired boiler. A threaded manifold fastener retains the assembly in suspension within a single access port of a conventional water heat... | 10/25/1994 |
| 5329920 | Wood burning boiler An outdoor, self-contained wood fueled furnace. The furnace includes a non-warping, laminated sheet metal door; a rear exiting flue with water discharge means; and a baffled, heat exchanger which surrounds the firebox. The door, particularly, includes an ... | 07/19/1994 |
| 5201307 | Insulated firebox for swimming pool or spa heaters for reduction of smoke or odor An insulated firebox is disclosed which forms a portion of the combustion chamber of a pool heater and which is adapted for reducing the emission of smoke and odor from the firebox into the atmosphere. The firebox is comprised of insulation material which... | 04/13/1993 |
| 5165350 | Underground wood burning furnace apparatus A subterranean furnace construction includes a firebox, with the firebox formed with a surrounding outer wall defining a serpentine steam pipe wound therethrough for use in heating of an associated dwelling. Positioned adjacent the firebox construction is... | 11/24/1992 |
| 5096413 | Ignition mechanism for a heater An ignition mechanism for a heater which includes a metal exothermic container in which are mounted an exothermic part, a firing part and an igniter. The igniter is a type which may be actuated by pushing or pulling a string. The mechanism comprises a tub... | 03/17/1992 |
| 4987954 | Fuel reactor A fuel reactor particularly adopted for the efficient combustion of wood and wood-product fuels includes a core comprised of an inner fuel tube and an outer gas tube. Fuel is introduced into one end of the fuel tube and the combustion process is initiated... | 01/29/1991 |
| 4926797 | Wood burning hot water furnace A forced air liquid heating furnace which includes a liquid heating jacket or chamber surrounding the combustion chamber and having an exhaust gas discharge passage formed in the bottom of the combustion chamber to produce heat transfer on both sides of t... | 05/22/1990 |
| 4785747 | Gasifying burner for a solid fuel heating apparatus The present invention relates to a gasification burner for heating apparatus (boiler, hot air generator or the like) which uses solid fuel. The gasification burner is placed generally at the center of the hearth of the heating apparatus to achieve gasific... | 11/22/1988 |
| 4779795 | Convector room heater incorporating a hot water boiler According to the present invention there is provided a boiler comprising a firebox, a control device controlling the flow of air into the firebox, a water jacket surrounding at least part of the firebox, a sensor to sense the temperature of the water in o... | 10/25/1988 |
| 4724798 | Outdoor woodburning furnace An outdoor wood-fired furnace which heats water for domestic use and provides heat is disclosed. The furnace has a water jacket, sides, top and ends. A main distribution chamber is provided for air on its bottom with outlet means to the firebox. The water... | 02/16/1988 |
| 4700686 | Heating apparatus A heating apparatus comprising a water container, a firebox for heating the water in the water container, a heating chamber containing a plurality heat emitting members disposed therein, a water storage tank disposed on the water container, and a fan for ... | 10/20/1987 |
| 4699069 | Boiler or furnace A boiler has a cylindrical body separated into two chambers by a transverse inner water chamber. A fuel magazine leads to one of the chambers, while a cyclone with a flue leads from the second chamber, the two chambers being connected by a sinuous combust... | 10/13/1987 |
| 4612878 | Wood-burning heater for circulating water An improved wood burning furnace having a water preheat chamber connected thereto with a water distribution means in said preheat chamber, said distribution means extending laterally across the preheat chamber and being provided with a plurality of spaced... | 09/23/1986 |
| 4596233 | Solid fuel combustion equipment Solid fuel combustion equipment in the form of a grate assembly comprises longitudinally extending support elements on which are mounted laterally orientated grate bars. The support elements are pivotable about their horizontal axes and are provided with ... | 06/24/1986 |
| 4566393 | Wood-waste burner system Wood-waste products, such as wood shavings, wood chips and sawdust, are burned in an apparatus having a waste burner comprising an elongated cylinder in which fuel and air are mixed and ignited before entering an enlarged combustion chamber. The waste bur... | 01/28/1986 |
| 4565184 | Combustible particulate fuel heater A heater is disclosed for burning combustible particulate fuels. The fuels are delivered to an internal retort at a constant rate. They are burned at an open end of the retort with the aid of a primary air supply manifold that surrounds the open end of th... | 01/21/1986 |
| 4562777 | Heat generator A heat generator comprising a fuel supply chamber (7a), having at its lower end an inwardly tapered section (12), comprising at its lower end a burner plate (14) with mixing strips (33) and a combustion pipe (20), said tapered section (12) being provided ... | 01/07/1986 |
| 4555993 | Water gas furnace A water gas furnace comprising an outer container to provide a housing in which coke is placed into its lower part. A water container is placed within the housing. The coke is ignited and heats the water in the container converting it into steam. The stea... | 12/03/1985 |
| 4534319 | Wood burning stove heat exchanger A wood burning stove includes a water circulating grate within the stove fire chamber which includes horizontally extending, vertically spaced, first and second tubular manifolds. Fuel supporting pipes, including bottom portions which define a "V", physic... | 08/13/1985 |
| 4516534 | Steel construction solid-fuel firing boiler for civil heating applications A novel steel construction solid-fuel firing boiler for civil heating applications comprises a space portion defined by side, bottom, cover, front and rear walls forming therein an interspace for water to be heated, a firestone block burner in the space p... | 05/14/1985 |
| 4497262 | Wood fired boiler A wood-fired boiler construction is shown having a firebox (15) mounted on a metal base (12) and concrete slab (11) in an insulated shed (13). The firebox is a generally box-like structure constructed from spaced, metal tubular members (16) of generally r... | 02/05/1985 |
| 4479605 | Heating system A system for generating, storing and releasing heat comprises a tank surrounding a reservoir for holding a heat transfer fluid, heat releasing means in fluid communication with the reservoir for controllably releasing heat from the fluid to an object or s... | 10/30/1984 |
| 4474117 | Boiler using a solid granulated fuel The invention relates to boilers using solid fuels in granular form. It comprises: (a) automatic feeding of the firebox with fuel by a reciprocating piston system forming a fire barrier in the rest position and actuated by a low power linear movement motor, an... | 10/02/1984 |
| 4471724 | Liquid heating system This invention is a non-fossil fuel fired hot water system which allows a large amount of water or other liquid to be raised to a relatively high temperature, but below the boiling point, in a relatively short period of time. Due to a unique air circulati... | 09/18/1984 |
| 4470359 | Auxiliary furnace in combination with a boiler A boiler which is designed to be fired by oil and/or gas comprises a water cooled combustion tube closed at one end and located within a water space of the boiler, is connected to a solid fuel fired boiler by an auxiliary furnace having a combustion chamb... | 09/11/1984 |
| 4461243 | Steam or hot water generator operating by solid fuels having high contents in volatile materials A steam or hot water generator, operating by solid fuels having high contents in volatile materials, provides that the column of fuel bears on an inwardly inclined grate. A fraction of the carbureting air passes through the grate and fuel, carrying along ... | 07/24/1984 |
| 4461242 | Means for heating water by wood burning The wood burning water heating means of the present invention utilizes a firebox having a grate adjacent the lower end and a flue opening positioned downward from the upper end thereof. The flue extends into the firebox so as to deflect rising hot gases p... | 07/24/1984 |
| 4444153 | Grateless furnace for solid fuel A grateless furnace has a combustion chamber, means to introduce solid fuel into the combustion chamber and to permit said fuel to form a fire bed in the bottom thereof, the combustion chamber being of such configuration that slag formed during combustion... | 04/24/1984 |
| 4424024 | Bulk curing with solid fuel Apparatus for bulk curing tobacco comprising a barn having a heat exchanger therein defining interior flow paths for heated water and exterior heat exchange surfaces disposed within the curing air flow path within the barn, hot water storage tank unit, a ... | 01/03/1984 |
| 4422410 | Domestic combustion appliances A domestic combustion appliance 1 has a body 2 having a distributor plate 14 for supporting a shallow fluidized bed 32. A primary boiler 34 forms part of a rear bounding wall for the fluidized bed 32, and a secondary boiler 50 is located downstream provid... | 12/27/1983 |
| 4421064 | Heating boiler The invention reads on a heating boiler for solid fuel, comprising a combustion volume with fuel feeding aperture, air entry apertures and chimney flue, and a water volume, the latter bordering on said combustion volume by mediation of convection plates. ... | 12/20/1983 |
| 4419940 | Boiler installation Sulfur is readily and efficiently removed from solid fuel in a boiler installation which comprises a hearth for burning and thereby gasifying the solid fuel, the hearth including a grid supporting a fluidized bed of the solid fuel spread thereover, and a ... | 12/13/1983 |
| 4419942 | Stove A stove in which the fuel is combusted within a primary combustion zone and the products of combustion are transported into a tertiary combustion zone surrounded by a container of water. A bundle of secondary combustion tubes connect the primary and terti... | 12/13/1983 |
