177results about "Stoves/ranges with convection heating" patented technology

An apparatus and method used with a conventional barbecue, such as a kettle-type barbecue, which enables the barbecue to be fueled by fuel pellets burned in a fire box. The apparatus includes a support, a hopper and feeder structure for the fire box combined into a unitary construction selectively positionable as a unit on the barbecue body of the barbecue or removed therefrom. In embodiments illustrated, the fire box is positioned so as to direct heat to a desired location within the apparatus.

A food warming device having a bin for holding food products. The bin has an air delivery port and an air intake port located at first and second end walls that are disposed at first and second opposite edges of the bottom portion. The regions above the bottom portion and along the third and fourth opposite edges between the first and second walls are substantially open whereby the food products are clearly visible to customers. The bottom portion has a heated surface for receiving food products to be warmed. An air circulating means forms a stream of circulating heated air that moves from the air delivery port over the heated surface to the air intake port. The food products are warmed by heat emanating from the heated surface and by warm air from the stream of circulating heated air. A balancing system maintains the circulating air in balance by diverting a portion of the return air to ambient atmosphere through a bleed exhaust port.

An open “funnel shaped” Inner Burner inside an open top Outer Casing. The casings closed base has a central hole accommodating the burners small open bottom Ash Exit. The space between the Inner Burner wall and Outer Casing wall forms an Annular Air Plenum that's supplied by an electric variable speed blower. Air enters the Burner Combustion space through perforations in the Burner/Plenum wall. This ensures rapid ignition and controls combustion rate (Temp). This also precipitates ash from burner Ash Exit, through the Ash Chute and into Storage Container fitted to outer casings base. A Radial diffuser centered on the heating surface provides a variable speed Lateral Air Sheet between heating and grill surfaces, instantly blowing “Smoke and Flare-Ups” to the outer burner perimeter. Unit is designed as a “Drop-In” unit to fit a manufacturer BBQ cart suitably equipped to specify basic installation requirements.

A portable radiant heater comprises an electrically energized heating element extending along a vertical axis. A first, multi-faceted, concave reflective surface is positioned to the rear of the heating element. A second reflector is positioned forward of and in close proximity to the heating element. The first reflector directs radiant energy received directly from the heating element and indirectly from the second reflector forward with minimal radial dispersion.

A portable pellet fired heating element for mounting to a grill or stove and comprising a gravity fed pellet holder, a unitary tubular structure having a burner, an air intake and an exhaust chute. Fuel may be supplied to the pellet holder by various supply means such as a conveyer, ramp, scooped, held in bulk in a hopper, and like pellet supply structures and methods. Fuel is fed to the air-cooled insulated burner area onto a decomposer grate, which defines the primary combustion area and which is partially open to the atmosphere for air intake. An adjustable high-pressure flow of gas or vapor is introduced to the primary exhaust chute below the decomposer grate to create a low pressure flow above the grate and which upon ignition, cause flames to be pulled into the pellet mass on the grate. In operation, air from the primary air intake maintains hot charcoal in the primary combustion area, and the secondary combustion area provides a steady flow of wood gas that mixes with a predetermined or adjustable amount of air supplied by the secondary air intake to maintain the flame. The super heated gasses and any ash are provided to the grill or stove by means of the exhaust chute. For cleaning purposes, an electrical/mechanical device may be provided to move the decomposer grate or to provide a sudden burst of high gas pressure.

A heat exchange system and method for heating outside air provided to a structure are disclosed. The system uses and recovers heat from waste products that are being exhausted from the structure. A heated products source generates heated waste products as a result of combustion. An exhaust duct passes the heated waste products through a heat exchanger before exhaustion from the structure. An intake duct that supplies fresh outside air to the structure also passes through the heat exchanger. The heat exchanger couples the exhaust duct and the intake duct and transfers otherwise unused heat from the waste products to the outside air to increase the overall efficiency of the heated product source.

A forced air heating system has a heat regulating unit assembled therewith, the heating system comprising a furnace having fuel burner and a flue pipe for outlet gases. The heat regulating unit has a metal flue conduit with a flue gas inlet and a flue gas outlet connected to the flue pipe in proximity to the furnace to form a portion of the flue pipe. An elongated casing surrounds the flue conduit and defines with the flue an annulus in which a series of equispaced metal fins extend radially from the flue conduit to the casing to define chambers containing a heat-absorbing material such as metal wool. The heat regulating unit functions as a heat-sink to absorb heat from the hot fuel and a heat source gases for return to the furnace by conduction and convection.

A self-powered fan for circulating air for use in cooperation with a heat source, such as a wood stove, and having a first heat transfer member thermally and physically connected with the heat source. The fan blades operably create a first or warm air flow and a second or cooler air flow. The fan has a second heat transfer member with a thermocouple module structure located between the two heat transfer members. The first heat transfer member is of suitable material, size, mass and shape as to provide a suitable temperature gradient between the thermocouple structure and the heat source to operably allow of such sufficient heat transfer from the first heat transfer member to the thermocouple to generate sufficient power to effect rotation of the blades, but not to cause thermal damage to the thermocouple structure. The fan blades are constructed and arranged to cause a portion of the second air flow to be drawn past the first heat transfer member to effect a cooling heat transfer effect upon the first heat transfer member. The improvement is wherein the motor located on the first transfer member adjacent a side of the thermocouple structure remote from the second transfer member does not hinder the second air flow, and is suitably located as to not be operably thermally damaged by the first heat transfer member or the heat source.

A pellet barbecue configured to recirculate exhaust gas, allowing for the reduction of oxygen in the cooking chamber. The pellet barbecue is configured with an exhaust gas recirculation system, and an angled bottom fire pot. The electric gas recirculation fan pulls gases from a gas recirculation channel, and blows it onto the angled bottom fire pot. The gas recirculation channel is equipped with a movable mixer flap to control how much of the gas pulled by the gas recirculation fan is exhaust gas or outside air. The pellet barbecue controller monitors the conditions in the cooking chamber, and controls the gas recirculation fan speed and positioning of the mixer flap to maintain a desired temperature, while optimizing the concentration of wood taste compounds from the pellets in the cooking chamber.

A bonfire oven has a body placeable on the ground. The body has a combustion cabinet and an auxiliary equipment cabinet. A burner contained in the combustion cabinet has a fire grate, a side plate extending upward from the fire grate, a top plate opposite to the fire grate, a blowing space beneath the fire grate, and a hearth defined by the fire grate and the side plate. A fuel supply mechanism, an electrical equipment and an air blower is contained in the auxiliary equipment cabinet. The bonfire oven further has a flame portion on the top which is a flame roaring space formed by at least one piece of high temperature resistant glass.

An oven has an enclosed heat exchange zone for use with biomass fuel. The oven has a body which is able to be placed on the ground. The body has a combustion cabinet and an auxiliary equipment cabinet. The combustion cabinet has a burner received therein. The burner has a fire grate, a side plate, a blowing space, and a hearth. A heat exchange zone is defined by the surrounding tubular inner wall; a side heating zone being defined by a tubular inner and a tubular outer walls. A chimney is formed on the tubular outer wall in communication with an upper portion of the side heating zone. An opening is defined in the top of the combustion cabinet right above the tibular inner wall.

The invention discloses an automatic biological material combusting multipurpose furnace, which adopts an automatic ignition, automatic spiral feeding and suspending combustion mode, an enclosed negative pressure type and secondary return air to ensure no leakage of waste gas, simultaneous greatly reduces the discharge capacity of carbon monoxide, is safe, sanitary and environment-friendly, controls temperature outside a combustion chamber in a specific range, adopts a full enclosed combustion mode, can be used separately to achieve the heating effect, and also can be added with water and connected with radiators by pipelines to achieve water circulation heating; in addition, a waste gas discharge pipe can be connected with a hot gas fan of a furnace body through a pipeline to achieve windcirculation; in order to be suitable for rural areas, the furnace can be used for cooking; therefore, the furnace have multiple purposes, combusts waste residue, has high efficiency, low consumption,environment-friendly discharge, energy conservation and emission reduction, and brings safe living environment to life of people; and meanwhile, the furnace utilizes biological granules as fuel, achieves the aims of utilizing the waste and changing the waste into the treasure, makes the environment better, and solves the difficult problem of handling straws, old and useless woodware and peels offruits of urban residents of governments at all levels.

The fireplace and chimney is provided made of specially formed stacked modular concrete units laid with several modular concrete masonry units in horizontal masonry courses, and specifically designed so a traditional clay flue liner may be inserted into the modular chimney as it is being erected. The sections making up the fireplace and chimney are the firebox, the damper level, the structural shelf level, the tapered smoke chamber level, and the chimney to form a naturally drafted masonry fireplace assembly.

An oven for use with a variable pitch fuel supplier and for use with biomass fuel. The oven has a body which is able to be placed on the ground. The body has a combustion cabinet and an auxiliary equipment cabinet. The combustion cabinet has a burner received therein and the auxiliary equipment cabinet has a fuel supplier and an electrical equipment received therein. The fuel supplier has a hopper, a fuel tube, and a rotary vane feeder rotatably received in the fuel tube. The electrical equipment has a power supply and a feeding motor driving the rotary vane feeder. Pitches vary larger from a tail end to a free end of the rotary vane feeder.

The invention provides an air circulated heating and purifying device for a coal-fired furnace and the coal-fired furnace using the air circulated heating and purifying device and a processing method for the coal-fired furnace. The air circulated heating and purifying device comprises a heat pipe exchanger, an induced draft fan and an air filtering device. A heat exchange pipe is installed in the heat pipe exchanger, and the heat exchange pipe is filled with a heat transfer substance. A horizontally placed smoke discharging pipe is extended from a smoke discharging port of the coal-fired furnace. The lower part of the heat pipe exchanger is installed in the smoke discharging pipe. One side of the upper part of the heat pipe exchanger is provided with an air inlet. One side, opposite to the air inlet, is provided with an air outlet. The induced draft fan is installed at the air inlet or the air outlet. The air filtering device is installed at the air inlet or the air outlet. The air circulated heating and purifying device is installed at the smoke outlet pipeline of the coal-fired furnace, so the heat quantity in the smoke can be effectively recycled and the indoor air can be purified simultaneously. The air circulated heating and purifying device is capable of greatly improving the utilization efficiency of the smoke heat quantity of the coal-fired furnace, so the air can be heated by only smaller heat quantity.

A combustion furnace includes an inner shell, an outer shell, a gas inlet piping and a flame inhibiting cover. The inner shell defines a receiving cavity therein. The inner shell defines a plurality of first gas holes around the periphery of a top portion thereof. The inner shell defines a gas inlet hole at a bottom thereof. The outer shell encloses the inner shell such that a gas flowing space is defined between the inner shell and the outer shell. The gas inlet piping has an opening formed at one end thereof, and the gas inlet piping communicates with the gas flowing space. The flame inhibiting cover is atop the outer shell and the inner shell, and a lower flange of the flame inhibiting cover is below the first gas holes.