Evaporator system used for the production of maple syrup. The evaporator system includes at least one receptacle, a combustion chamber, an evacuation port and an air supply system. The evaporator system also includes a door assembly being configured for removably mounting onto a corresponding support frame of the evaporator system, and being operable between an opened configuration for allowing access to the combustion chamber and to be able to selectively feed biomass into the combustion chamber via the inlet thereof, and a closed configuration for preventing access to and closing off the inlet of the combustion chamber, the door assembly being provided with at least one aeration passage extending between an outer portion of the door assembly and an inner portion therefor, for providing a supply of secondary air to the combustion chamber via said at least one aeration passage of the door assembly when operated in the closed configuration.

A stove for indoor use includes a housing having a bottom wall, a top wall and one or more side walls defining a combustion chamber adapted to retain a fire, and an air supply system for supplying air to the combustion chamber. The air supply system includes a primary air conduit for supplying air to the combustion chamber from below through the bottom wall and a secondary air conduit for supplying air to the combustion chamber from above. A valve is arranged in the primary air conduit or in a branching between the primary and secondary air conduits. The valve is controlled by a bimetal whereby the valve is in a maximum open position when the prevailing temperature is below a first predetermined temperature during start-up of a fire and in a maximum closed position when the prevailing temperature is above a second predetermined temperature after start-up of the fire.

A burner for burning fuels and modular heat utilizing appliances therefor. The burner includes a fuel holder, an outer wall surrounding the fuel holder and defining a combustion chamber, and optionally, a second wall surrounding the outer wall. Air is inducted from an inlet which may be an ash pan pivotally coupled to the outer wall at the bottom to open the combustion chamber. Supplementary combustion air is conducted to just above the fuel holder by the outer wall. Additional supplementary combustion air is conducted to just above the fuel holder by the second wall. The burner may include a pivotally mounted cooking grate and a pivotally mounted solid cover for closing the combustion chamber, and supporting legs. Modules individually yet replaceably attachable to the burner include a closed or open cooker, a smoker, a space heater, and a pyrolyzer.

A method for burning a fuel in a wood stove having a door to a combustion chamber with a base, which combustion chamber is isolated from the air by an exhaust and an intake at which intake there is provided an air regulator having at least primary, secondary and tertiary air intake ducts. The stove is controlled by a burn controller configured to operate between the different operating, i.e. different combustion states.

Disclosed herein is a partition wall assembly for a stove. The partition wall assembly for a stove includes a plurality of partition walls (100, 100a, 100b, 100c). Each of the partition walls includes: an outer panel (110) having first air intake holes (111a) formed at a lower portion thereof so that first air is induced; an inner panel (120) coupled to the inside of the outer panel (110), and having an air moving space (119) formed between the outer panel (110) and the inner panel (120) so that the first air induced through the first air intake holes (111a) moves in the air moving space (119) while temperature of the first air is elevated, and second air outlets (121b) formed at an upper portion thereof to discharge the second air with the elevated temperature toward fuel; and a pair of side coupling members (130) disposed at both sides of the outer panel (110) to couple the outer panel (110) and the inner panel (120) with each other. The inner panel (120) includes: an inner panel body (121) curved to have a predetermined curvature in a height direction; a lower inside coupling plate (122) extending from a lower portion of the inner panel body (121) to a predetermined area and coupled with the outer panel (110); and an upper inside coupling plate (123) extending from an upper portion of the inner panel body (121) to a predetermined area and coupled with the outer panel (110).

A gas fireplace combustion device structure includes a simulated solid fuel and a combustor under the simulated solid fuel. The combustor has a fire exit hole facing the simulated solid fuel, a combustion air inlet passage under the combustor, and a specific slot at the combustor to define a third combustion air inlet. A partition is installed under the combustor; a second combustion air inlet leading to fire exit hole is formed between the partition and the combustor; the combustion air inlet passage is provided for supplying air to the second and third combustion air inlets; a combustion air slot is formed at the middle of the simulated solid fuel to resupply combustion air to the flame above the simulated solid fuel in order to achieve a two-time sectional combustion. This invention can control and resupply combustion air to the flames in different areas to improve the combustion effect.

Disclosed is a stove that includes a dome-shaped fire grate comprising a center, a perimeter surrounding and spaced from the center, the center being higher than the perimeter; a plurality of radial stiffening ribs extending away from the perimeter and toward the center; at least one circumferential stiffening ring extending at least partially about the center; and a plurality of ventilation holes between the center and the perimeter.

Evaporator system used for the production of maple syrup. The evaporator system includes at least one receptacle, a combustion chamber, an evacuation port and an air supply system. The evaporator system also includes a door assembly being configured for removably mounting onto a corresponding support frame of the evaporator system, and being operable between an opened configuration for allowing access to the combustion chamber and to be able to selectively feed biomass into the combustion chamber via the inlet thereof, and a closed configuration for preventing access to and closing off the inlet of the combustion chamber, the door assembly being provided with at least one aeration passage extending between an outer portion of the door assembly and an inner portion therefor, for providing a supply of secondary air to the combustion chamber via said at least one aeration passage of the door assembly when operated in the closed configuration.

A fire pit includes a main body having a double outer wall that defines an air inlet. An accessory support post is received by the main body within the double outer wall. A locking projection and locking flange cooperate to lock the vertical and rotational position of the support post with respect to the main body of the fire pit. A floating fire box is supported from above by a grilling flange that allows the fire box to move down when heated. The accessory post can be used with a post holder next to a camp fire. The post holder and accessory post use of the locking projection and locking flange to secure the accessory post with respect to the holder. A grill having an outer body member protects the user's finger from engaging sharp edges of an expanded metal grill.