Feeding air

A heating stove for burning woodlike organic material having a fire box for receiving material to be burned substantially centrally therein. The walls of the fire box are sealed to render it substantially air-tight. At least one substantially vertically aligned draft tube depends downwardly from the...     

A wood and oil burning furnace having a combustion chamber in which logs are laid for burning, a baffle plate across a substantial portion of the top of the combustion chamber, a combustion gas outlet at the top of the chamber, a plurality of secondary air inlet tubes in the upper portion of the combustion...     

A combustion air sytem for wood fired boilers, furnaces, stoves and other heating apparatus; the combustion air system including an air-tight combustion chamber, within which a wood fuel is burned upon a grate, primary air being introduced from below the grate, so as to burn the wood, and a secondary...     

An automatic wood burning heating stove has a fire chamber, a fuel feeding opening, closeable by an airtight door which is removable to convert the heater to an open fireplace. The door has a reflective ceramic surface on its inner face to direct heat toward preheating tubes having outlets directed above...     

A wood burning stove is formed with double front and rear side walls of heat conductive metal interconnected by heat conductive spacer fins and providing air passageways by which room air is heated by conduction from the walls which are heated by the burning of wood deposited on a firebox grate made...     

A fireplace stove that is quickly and easily installed in a conventional fireplace with little or no modification of the fireplace or chimney comprises a firebox that is shaped and dimensioned to be at least partly received in a fireplace but with clearance between it and at least some of the walls of...     

A fuel burning heater has a lower combustion chamber with a front door and an upper heating chamber with a discharge port at the rear thereof for products of combustion. A common wall between the combustion chamber and the heating chamber defines a top for the combustion chamber and a bottom for the...     

A stove for use in an abode and which includes an air intake system and a viewing door. The air intake system inducts air into the stove from outside the abode and includes a draft control mechanism for controlling the amount of air introduced into the stove. The viewing door includes means for slidably...     

A radiant heater for burning firewood and the like to heat a living space such as a mobile home or house including an enclosure with a combustion compartment for the burning of the firewood placed in the combustion compartment, a flue pipe positioned outside the living space, an exhaust pipe extending...     

A store having a parallelepiped-shaped combustion chamber and a parallelepiped-shaped flue chamber smaller in all dimensions than the combustion chamber and with four similar shaped flue outlet frames on the top, rear and sides thereof. The stove includes one flue outlet collar and three blanking plates...     

The furnace for burning wood or coal has a cabinet with a front wall and interconnected spaces between the inner and outer walls at the sides, top, bottom and rear. One of two outer walls have an inlet and outlet for flow of air to be heated. There are aligned flue openings in the upper portion of one...     

The disclosure is of a downdraft furnace fired by solid, carbonaceous fuels such as wood logs, coal and the like. The furnace is adapted for burning the fuel in three stages, to obtain complete combustion. The advantage of the furnace of the invention resides in its heating efficiency with few pollutants...     

A downdraft woodburning stove in which there is improved combustion, heat transfer and combustion regulation comprising novel air inlet circulation, grate construction and automatic control of (1) temperature of exhaust gases and (2) of combustion air, and (3) the supplies of both primary and secondary...     

A fuel burning heater has a lower combustion chamber with a door at the front thereof and an upper heating chamber with a discharge port for products of combustion at the rear thereof. A common wall between the heating chamber and a portion of the combustion chamber defines a bottom for the heating chamber...     

A wood burning stove, a free standing fireplace or fireplace insert is constructed to receive one of three possible types of inserts to make the unit adaptable to a convection, hot air or hot water heating system. The wood or like fuel combustion rate is automatically controlled by a temperature sensor...     

A maximum efficiency stove or furnace for heating homes or other buildings. The stove includes a primary combustion area for burning a primary fuel, such as wood, and secondary combustion areas for burning the gases of combustion after they leave the primary combustion area. The combustion chambers and...     

A wood and coal fired heating unit, comprising a magazine wherein is incorporated a preheating draft manifold, supplying all primary and secondary drafts to the combustion zone and secondary combustion chamber. Within the fuel combustion chamber a baffle, the same comprising a wall between said combustion...     

A sheet metal stove comprising a shell of rectangular shape having a plurality of tubes extending between opposite sides thereof and extending therethrough to receive ambient air for combustion, adjustable dampers on the opposite ends of said tubes and slots therein between the ends to discharge air...     

The specification discloses a fireplace stove in which heat exchange tubes slope upwardly from a sloping rear wall to a sloping front wall of a polygonal body and are open at each end. A door is openable and/or removable from the body to form a fireplace. A door frame has a thermostat controlled damper...     

A free standing stove having excellent thermal emission and fuel combustion characteristics comprising front, back, base, top and side plates of high strength, heat transmitting metal defining a main body of the stove. The interior of the main body of the stove is provided with a horizontal baffle plate...     

A wood-burning heating apparatus, used as a parlor stove, and providing a significant heat output is disclosed. The stove has primary and secondary combustion chambers and a baffling arrangement for directing flue gases along a circuitous path to the exit aperture whereby a significant proportion of...     

A wood burning combustion heater comprises a combustion chamber for long logs arranged to burn down from one end to the other in cigar-like fashion, an after-burner tube arrayed above and essentially parallel to the elongated logs with the air and burned gasses following an S-shaped path through the...     

A stove having walls which are shaped and supported to prevent warping thereof. A combustion chamber in the stove is defined by bottom and side walls positioned and oriented to maximize the space available for such a chamber. The walls of the combustion chamber have top caps thereon for ensuring and...     

A Baffled Stove is described having a generally rectangular heating structure with its lower or bottom portion adapted to form a firebox for receiving fuel such as wood or coal. A primary air passageway is provided for introducing air into the heating structure at or near the level of the firebox. Controls...     

A wood-burning furnace including a combustion chamber having a novel combustion air distribution system including jets whereby air is delivered only to a limited portion of the area of the fire bed, and whereby clogging of the jets by the large quantities of wood ash is prevented, the combustion air...     

A wood burning stove is formed with double front and rear side walls of heat conductive metal interconnected by heat conductive spacer fins and providing air passageways by which room air is heated by conduction from the walls which are heated by the burning of wood deposited on a firebox grate made...     

A stove comprises a firebox formed of two U-shaped interfitting members of steel plate and a U-shapted one piece base. Dual primary and secondary draft air channels extend along the bottom of the firebox from front to back immediately underneath the fire and upwardly at the rear of the firebox. A first...     

A heating apparatus is disclosed wherein a combustion chamber which contains the fuel to be burned is located adjacent to an air heating chamber. Conduit means communicate from the air heating chamber to the combustion chamber for the purpose of leading air, which has been heated within the air heating...     

A passive type of space heater having a vertical air heating duct located at the rear of the combustion chamber and a flue duct extending through the air heating duct with its inlet located so as to draw the flue gases from the combustion chamber around the surfaces of the air heating duct. Air for combustion...     

A wood stove is of all welded steel plate construction except for the door which is of heavy cast iron. When the door is closed, the only source of combustion air is through an adjustable air inlet on the face of the door. The door is hollow and serves to preheat the incoming air. The inner wall of the...     

A prefabricated fireplace, largely made of metal, is provided for permanent installation in a house or similar structure. The fireplace is completely self-insulated so that it does not require any special materials of construction for installation and furthermore, combustion air is supplied for secondary...     

A fireplace heating unit provided with a firebox. A vertically elongated hollow member defining in horizontal cross section a square and formed primarily of transparent material, is open at both ends and is secured at its lower end to the firebox. A hollow top section having a relatively small open upper...     

A woodburning heating apparatus capable of horizontal and updraft combustion has removable elements positioned within a relatively small enclosed volume to provide efficient and reliable operation in either combustion mode. The removable elements include the wear plates, fireback, and damper assembly....     

A woodburning stove having an inner housing and an outer housing spaced therefrom providing air passages therebetween. A blower circulates air through the air passages for absorbing heat from the walls of the housing and exhausting the heated air into the room where the stove is located. A substantially...     

An automatic air inlet control for combustion devices having an inlet for combustion air and a discharge outlet or flue will include, an elongated tubular member defining a flow passage having an inlet and an outlet, the outlet end of the tubular member being connected to the combustion air inlet for...     

A damper control system wherein a control screw is threadedly mounted in a door and engages a depending contact arm on a damper to move the damper between a closed position and various open positions.

A stove construction including a firebox that defines a combustion chamber. Air is supplied to the upper portion of the combustion chamber through a preheat manifold having outlet apertures spaced along the sides. Air is drawn from the atmosphere into the manifold where it is preheated and discharged...     

A wood burning stove having a primary combustion chamber and a secondary chamber having a catalytic converter therein is disclosed. Primary air is introduced to said primary chamber and secondary air is introduced to said secondary chamber utilizing completely separate and independent control means,...     

A heat exchanger furnace includes a firebox, a heat exchanger housing in communication with the firebox for receiving combustion gases therefrom, and a plenum housing surrounding the heat exchanger housing so as to define a plenum chamber therebetween. A plurality of baffles are supported in vertically...     

This stove invention relates to wood and coal burning stoves employed for heating. More effective draft control and heat transfer is achieved by a stove (11) employing straight and serpentine flues (46, 48), a control rod (43) to coordinate movement of a baffle (38) and damper (41) for defining passageways...     

A coal-burning boiler wherein primary air is admitted in the boiler front, below the grate, and secondary air is admitted in the rear of the boiler, below a box-like baffle member. The baffle member is disposed parallel to the grate and divides the boiler into upper and lower chambers communicating adjacent...     

A stove for burning solid fuels such as wood and coal with improved efficiency has three generally distinct combustion zones namely a primary zone, a secondary zone and a tertiary zone, thus ensuring fuller combustion of residual combustible gases in the tertiary zone just after the primary flue exit....     

An efficient, clean burning, woodburning stove in which super heated fresh air and exhaust gases from the primary combustion of the wood fire are introduced into a secondary combustion chamber wherein these gases are mixed to recombust remaining fuel particles. Exhaust from the secondary combustion chamber...     

A solid fuel burning stove (10) includes a firebox (11) having an insulated bottom chamber in which fuel is burned. The bottom chamber includes an insulated bottom surface (72) and walls (18, 20, 22, 24) which provides for heat retention when fuel is burned therein thereby creating high temperatures....     

The invention relates to a stove which burns a primary combustible material in a container placed on a horizontal plate which divides the stove into upper and lower combustion chambers. The plate has a central aperture therethrough which, in operation, is in registry with a central opening in the container...     

A wood burning stove is disclosed which includes a stove housing that defines an upper zone comprising storage and exhaust chambers, and a lower zone for accommodating a wood burning fire. The exhaust and storage chambers are separated by a divider, both chambers having bottom openings that communicate...     

A furnace for the burning of wood in a combustion chamber to generate heat. Primary air is brought in at a grate level of the furnace. Secondary air is brought in through a secondary air inlet, past a preheat chamber and through a secondary air duct to be expelled through holes in the secondary air duct...     

An air tight wood burning stove (10) for heating a designated space comprises a housing (12) having an access opening (50) in the front wall (14) thereof and at least one glass panel (64) containing door (54, 56) hingedly mounted on the front wall for closing the opening (50). A latching mechanism (60)...     

A fuel burning stove or furnace wherein combustion of fuel is more complete resulting in a greater amount of heat generation and a cleaner combustion residue. The stove includes a stove housing defined by side walls and top and bottom walls and having an unobstructed combustion chamber. A flue has a...     

Air circulation and supply means for a heat generator, primarily a fireplace. The fireplace has air supply and discharge passageways such that an envelope of moving air is provided around both the combustion gas flue and the firebox and a portion of said supply air is introduced as combustion air into...     

A forced air, fuel burning heater is provided which includes a relatively large damper plate slideably mounted immediately below the top wall of the heater, to thereby insulate the top wall from the heat of combustion and thereby reduce the temperature and thus the tendency of the top wall to warp from...     

A free standing stove is provided which includes a firebox for initiating the combustion of fuel, and a secondary combustion chamber for continuing the combustion. A first conduit is provided for conveying air through a draft inlet damper and into the firebox. A second conduit is provided for conveying...     

A wood burning stove comprises a fire chamber of which the upper part is constituted as a heat exchanger. A primary air supply is provided as is a secondary air supply, the secondary air supply permitting air to be mixed with the gaseous products of combustion to support complete combustion of those...     

An apparatus for heating a fluid, as air, having a housing surrounding a heat transfer chamber. A casing having a combustion chamber is located in the heat transfer chamber. A motor driven fan mounted on the housing operates to supply air to the combustion chamber and move air through the heat transfer...     

A wood burning stove is formed with double front and rear side walls of heat conductive metal spaced apart by heat conductive spacer fins and providing air passageways by which room air is heated by conduction from the walls which are heated by the burning of wood deposited on a firebox floor supported...     

A wood burning stove having a lower main fire box and a vertically offset oven unit. Directly under the cooking surface of the lower firebox is an auxiliary firebox; the air supply inlet has means to selectively direct the incoming air to either firebox so that a small cooking fire can be used alone....     

An improved wood burning stove for providing heated air to a room or similar area includes an enclosed fire chamber, a hearth at the bottom of the fire chamber, draft inlet means at the front of the fire chamber and a flue at the rear of the fire chamber. Within the fire chamber is an enclosed air chamber...     

A heating device for consuming a combustionable fuel, having an internal combustion chamber with top, sides, ends, and a grate forming the bottom; an outer shell, having a top, sides, ends, and a bottom in spaced relation below the grate; a primary air supply adapted to distribute the air beneath the...     

A sustained ignition secondary combustion apparatus in a housing of refractory insulating material includes a first level for conducting secondary air through a secondary air inlet and channel, and a second level for conducting smoke products. A partition separates the levels or zones. Openings are provided...     

The combination stove has a fire chamber that is partially cylindrical including a side loading door for loading wood or other combustible material such as coke or coal into the fire chamber. The front of the stove may be opened to enable viewing of the wood or coal burning in the stove by means of an...     

A slow combustion stove is disclosed. The stove comprises a stove body adapted to receive fuel, such as wood, on the bottom to form a fire bed, an adjustable air intake for admitting air into the stove body, an exhaust duct, a smoke outlet located adjacent the top of the furnace body and communicating...     

A freestanding stove is provided including an elevated firebox mounted atop a tubular pedestal having a horizontally enlarged downwardly opening hollow base at its lower end. The firebox includes a combustion air inlet opening downwardly into the pedestal and the lower end of the pedestal opens downwardly...     

A solid fuel-burning stove has a fire chamber defined by its walls and top and an upper gas recirculating chamber with a convex portion is provided in the top section of the stove.

A solid fuel burning modular stove fabricated from a plurality of metal assemblies includes a first assembly provided with a combustion chamber, an air duct at the lower front of the chamber communicating with the ambient air, a louver member inside the air duct varying the degree of admittance of air...     

A wood-burning stove includes side walls joined together in an airtight manner to form a firebox and a heat chamber thereabove. The firebox contains upstanding rails to support wood logs for combustion. Streams of heated air are discharged from a manifold that extends from rail-to-rail outwardly from...     

A fireplace furnace for the hot air heating of a room is disclosed. The fireplace furnace in a particular embodiment has an enclosed primary combustion chamber and a primary air supply for the initial burning of the fuel. A separate enclosed secondary combustion chamber and a secondary air supply for...     

The present invention is directed to the provision of an improved stove insert for a fireplace opening, having means associated therewith for precisely controlling draft, thereby enabling the stove insert to be used for coal as well as wood.

A thermostat for a stove is disclosed. The thermal control unit is contained in a housing which has an aperture formed therein and includes a thermal control unit for detecting changes in the temperature of the stove. A flap is secured to the housing and is rotatable across the aperture so as to cover...     

A heater closure attachment for 30 and 55 gallon metal drums which includes a main closure section provided with an exhaust stack and two depending draft inlet pipes, and a hinged section through which solid fuel is inserted, the inlet draft pipes having damper lids to control combustion and the whole...     

A heat exchanger furnace includes a firebox, a heat exchanger housing in communication with the firebox for receiving combustion gases therefrom, and a plenum housing surrounding the heat exchanger housing so as to define a plenum chamber therebetween. A plurality of baffles are supported in vertically...     

A stove firebox has a longitudinal opening in its bottom wall in which is supported upper and lower grates. The lower grate is slidable relative to the upper grate. Each grate has longitudinally spaced cross bars, and such cross bars and the openings therebetween have the same longitudinal dimension...     

A free standing stove is provided which includes a firebox for initiating the combustion of fuel, and a secondary combustion chamber for continuing the combustion. A first conduit is provided for conveying air through a draft inlet damper and into the firebox. A second conduit is provided for conveying...     

A combination furnace including a solid fuel burning section and an electrically powered heating section. The two sections are disposed within an upright, insulated casing. A heat exchanger is provided above a fire box which constitutes the fuel-burning section. Dampers control the flow of combustion...     

A catalytic stove comprised of a housing having a fuel-burning chamber and an effluent chamber. The effluent chamber is separated from the fuel-burning chamber by a common wall. The wall is at the top of the fuel burning chamber and is inclined to form a cathedral or domed chamber ceiling. Air inlet...     

A slow combustion stove having a transparent portion to enable vision into a primary combustion zone so that flames are visible in use has a double burning combustion chamber defined by the primary combustion chamber and a partitioned off secondary burning combustion chamber, an air inlet to enable air...     

An outdoor furnace including a conditioned air chamber surrounding a fire box and having an air inlet and outlet connected to the space to be heated within the building. The furnace is characterized by a pre-heat chamber for the combustion inlet air as well as deflectors and baffles for maximizing contact...     

The assembly is adapted for replaceable and operative installation within the opening of a standard fireplace. It comprises a combustion chamber and conduitry to accomodate ambient air entry into the chamber in a number of patterns and includes an arrangement for air preheating. Air is also heated by...     

A solid fuel furnace which includes a housing enclosing a firebox and a heat exchanger chamber. An open grate in the firebox supports solid fuel thereon. Combustion air is admitted to the area below the grate and is preheated and passes upwardly through the grate and fuel and mixes with volatile gases...     

An afterburner for a wood stove for use as a retrofit assembly comprises a rectangular housing having openings in the upper and lower surfaces provided with cylindrical collars for cooperation with the flue duct and with the opening in the top of the wood stove respectively. The openings are positioned...     

The invention provides a stove for burning a charge of fuel by primary air directed either above or underneath through the firebed. A firebed support is defined by an array of alternating fixed and movable bars, the movable bars having a length greater than their width when viewed endwise and being rotatable...     

A stove for burning solid fuel such as firewood. a lower level air inlet opening is provided for so-called "primary air," and another air inlet opening is provided at a higher level for so-called "secondary air." The volume of air introduced into the stove from each inlet opening is separately controlled....     

The disclosure teaches a fireplace insert. The insert has a front surface having an openable see-through portion and fixed see-through portions on either side of the openable see-through portion. Warming air inlets are disposed below the fixed see-through portions, and combustion air inlets are disposed...     

A wood burning stove having improved air flow characteristics for effective combustion and purging of gaseous combustion by-products. A primary air inlet is provided below the loading door of the stove for feeding air to the firebox proper for combustion. A plurality of opposing supplementary air inlets...     

Wood burning stoves are of a type having a lower chamber and an upper chamber interconnected by a port. Air inlets are located laterally of the base of a fire in the lower chamber with a natural draft therein effecting a multitude of upwardly rising air streams of which one type is hot and oxygen poor...     

An add-on catalytic damper assembly is provided which is adapted to be positioned between the flue outlet pipe of a wood burning stove and the chimney pipe, and which provides catalytic combustion of the normally unburned portions of the flue gas. The assembly is of a very simple five part construction...     

The present invention provides a stove having the following features: a firebox for initiating the combustion of fuel, the firebox including a lower portion with a draft inlet therein; a first conduit disposed under the firebox for conveying combustion air to a draft inlet and for insulating the underside...     

A dual stage combustion furnace has primary and secondary combustion chambers. The primary combustion chamber contains a solid fuel, such as wood or coal. The secondary combustion chamber is formed adjacent to and in communication with the primary combustion chamber for containing and igniting volatile...     

A firebox for a stove is defined by top, bottom, side and end walls and employs a loading door in one of the end walls. A main draft opening associated with an adjustable damper control is provided adjacent the lower portion of the firebox and an auxiliary draft opening associated with an adjustable...     

A heating apparatus for operating in one or the other of two combustion modes has a frame assembly enclosing a primary and secondary combustion chamber. A baffle, separating the chambers, provides for gaseous communication therebetween. Preheated primary and secondary combustion air is directed in a...     

This stove is divided by a partition into a lower, combustion chamber, and an upper chamber which communicates directly with an exhaust opening in the stove. A catalytic converter is removably mounted in an opening in the partition. A by-pass damper, which is connected to the stove door, is normally...     

An apparatus for placement in the effluent path of the combustible gases created by fuel burning in a combustion chamber and delivering such combustible gases to a catalyst is disclosed. A finned holder for placement downstream of the burning fuel is provided. The fins on the holder serve to create turbulence...     

The present invention is a vertically loaded wood-burning stove in which the wood stands on end and burns only on the lower end, sliding down into the combustion zone as it is consumed. The wood-burning chamber is air tight with the exception of unobstructed air inlets at the bottom of the chamber. The...     

A fireplace or stove apparatus for efficiently providing heat to a structure without loss of interior air to the flue draft. A blower forces outside air through a conduit located in the exhaust flue into a grate located in a fireplace or stove. The fuel loading opening of the fireplace or stove is made...     

The invention relates to a combustion method and apparatus for carrying out this method. The method comprises establishing (a) a combustion zone of hot embers above and near a grate and (b) a column of particulate fuel above and resting on said hot embers, supplying combustion air to said combustion...     

Woodburning heating apparatus including a catalytic igniter for increasing heating efficiency and reducing polluting emissions. The apparatus includes a secondary combustion chamber in gaseous communication with a primary combusiton chamber. The secondary combustion chamber is lined with a refractory...     

Apparatus for supporting a catalytic converter for a burner including a housing having an opening for directing the exhaust gases to a catalyst region and a by-pass opening permitting the exhaust gases to by-pass the catalyst region, a baffle positioned over the catalyst region and having a groove formed...     

Apparatus supporting a catalytic converter for a burner comprising a support including an opening for passage of exhaust gases therethrough, a catalytic converter mounted on the support for movement into and out of an operating position adjacent to the opening to receive the exhaust gases, and means...     

Free-standing stove/fireplace apparatus includes a plurality of heated air chambers disposed about a firebox and flue, with air intake and air outlet passages located at various heights for the convection heating of air in the room in which the apparatus is disposed and with provisions for utilizing...     

A stove for burning wood, coal and other fuels comprised of flammable solids that among other things produce one or more flammable gases when heating or burning. The preferred form of the stove has three modes of operation--a rapid burning mode, a normal or medium burning mode and a banked mode. The...     

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 the retort and directs primary combustion air into...