An outdoor wood-burning boiler is provided that includes a wood-burning enclosure, a wood support structure, and an air supply system configured for supplying air to wood that is supported by the wood support structure. The air supply system includes conduits for carrying a flow of air. At least one conduit can extend through a sidewall of the enclosure such that an end of the conduit is located outside of the enclosure. The end can include a re-closable closure. The re-closable closure can be configured to be opened from outside of the enclosure and provide access to the interior of the conduit so the conduit can be cleaned. The end and the re-closable closure can instead be located inside the enclosure and accessible through an access panel. An air supply conduit system is also provided that can be installed after-market or as original equipment.

An outdoor wood-burning boiler is provided that includes a wood-burning enclosure, a wood support structure, and an air supply system configured for supplying air to wood that is supported by the wood support structure. The air supply system includes conduits for carrying a flow of air. At least one conduit can extend through a sidewall of the enclosure such that an end of the conduit is located outside of the enclosure. The end can include a re-closable closure. The re-closable closure can be configured to be opened from outside of the enclosure and provide access to the interior of the conduit so the conduit can be cleaned. The end and the re-closable closure can instead be located inside the enclosure and accessible through an access panel. An air supply conduit system is also provided that can be installed after-market or as original equipment.

A heating apparatus can include a fire cage defining a cage space containing heated fuel. The heating apparatus can also include a container configured to be supported by the fire cage at a container position, wherein the container is above at least a portion of the cage space. The container can be designed to hold burning fuel above the heated fuel. Also, a heating apparatus can be arranged to form a food grill, and the heating apparatus can be rearranged to form a fire cage configuration. A thermal store can be placed in a heat collecting position on a side of the fire cage in a first location to heat the thermal store. The thermal store can be moved away from the fire cage and can be positioned in a second location away from the fire cage to emit thermal energy to heat air around the second location.

A heating apparatus can include a fire cage defining a cage space containing heated fuel. The heating apparatus can also include a container configured to be supported by the fire cage at a container position, wherein the container is above at least a portion of the cage space. The container can be designed to hold burning fuel above the heated fuel. Also, a heating apparatus can be arranged to form a food grill, and the heating apparatus can be rearranged to form a fire cage configuration. A thermal store can be placed in a heat collecting position on a side of the fire cage in a first location to heat the thermal store. The thermal store can be moved away from the fire cage and can be positioned in a second location away from the fire cage to emit thermal energy to heat air around the second location.

A burning stove includes a stove body, a front seat, a door, a rear seat, a top cover, and a baffle. The baffle divides the stove body into an air inlet chamber and a combustion chamber. The door is provided with first air inlet holes and second air inlet holes. The baffle is provided with first air holes. The baffle is provided with an air guide port and an air guide face. First partial air flows backward in the air inlet chamber, flows through the air guide port and the air guide face, and flows upward into the combustion chamber, and second partial air in the air inlet chamber flows through the first air holes into the combustion chamber. The first partial air and the second partial air form a vortex air flow in the combustion chamber.

A burning stove includes a stove body, a front seat, a door, a rear seat, a top cover, and a baffle. The baffle divides the stove body into an air inlet chamber and a combustion chamber. The door is provided with first air inlet holes and second air inlet holes. The baffle is provided with first air holes. The baffle is provided with an air guide port and an air guide face. First partial air flows backward in the air inlet chamber, flows through the air guide port and the air guide face, and flows upward into the combustion chamber, and second partial air in the air inlet chamber flows through the first air holes into the combustion chamber. The first partial air and the second partial air form a vortex air flow in the combustion chamber.

In one aspect, the present invention is directed to boiler heating system, comprising: a hollowed-walls cylinder, for storing therein water to be heated; a partition in a form of a cylinder, disposed inside the hollowed-walls cylinder, distantly from its vertical walls; the partition having an upper water passage and a lower water passage, for allowing water transition between the inner side of the partition and the outer side of the partition; a heating element disposed inside the inner space of the hollowed-walls cylinder; a water inlet, disposed in the lower side of the hollowed-walls cylinder; and a water outlet, disposed in an upper side of the hollowed-walls cylinder, thereby (a) allowing heating the water without being in direct contact between the heating element and the water, resulting with no scale accumulation, and (b) separation between ascending water and descending water, thereby accelerating the water warming.

In one aspect, the present invention is directed to boiler heating system, comprising: a hollowed-walls cylinder, for storing therein water to be heated; a partition in a form of a cylinder, disposed inside the hollowed-walls cylinder, distantly from its vertical walls; the partition having an upper water passage and a lower water passage, for allowing water transition between the inner side of the partition and the outer side of the partition; a heating element disposed inside the inner space of the hollowed-walls cylinder; a water inlet, disposed in the lower side of the hollowed-walls cylinder; and a water outlet, disposed in an upper side of the hollowed-walls cylinder, thereby (a) allowing heating the water without being in direct contact between the heating element and the water, resulting with no scale accumulation, and (b) separation between ascending water and descending water, thereby accelerating the water warming.

A burning stove includes a stove body, a front seat, a door, a rear seat, a top cover, and a baffle. The baffle divides the stove body into an air inlet chamber and a combustion chamber. The door is provided with first air inlet holes and second air inlet holes. The baffle is provided with first air holes. The baffle is provided with an air guide port and an air guide face. First partial air flows backward in the air inlet chamber, flows through the air guide port and the air guide face, and flows upward into the combustion chamber, and second partial air in the air inlet chamber flows through the first air holes into the combustion chamber. The first partial air and the second partial air form a vortex air flow in the combustion chamber.

A burning stove includes a stove body, a front seat, a door, a rear seat, a top cover, and a baffle. The baffle divides the stove body into an air inlet chamber and a combustion chamber. The door is provided with first air inlet holes and second air inlet holes. The baffle is provided with first air holes. The baffle is provided with an air guide port and an air guide face. First partial air flows backward in the air inlet chamber, flows through the air guide port and the air guide face, and flows upward into the combustion chamber, and second partial air in the air inlet chamber flows through the first air holes into the combustion chamber. The first partial air and the second partial air form a vortex air flow in the combustion chamber.