The present disclosure relates to a non-electric, multifunctional, configurable pellet-burning system for domestic and industrial use, which has a removable burner and an inclined hot gas outlet duct that connects said burner of the system with a heat accumulator tank that operates as a second combustion chamber and as a particle filter.

The present invention relates to a foldable containment bag for charcoal, designed to seamlessly remove used or spent charcoal and ashes directly from a grill. The bag can be unfolded in a planar sheet to insert into a grill. The sheet is flexible and conforms to the shape of the inside surface of the grill. The sheet includes a top surface, a bottom surface and a mesh of flexible aluminum wiring disposed within the top surface and the bottom surface. During use, charcoal is placed on the top surface of the sheet, and after use of the grill, the sheet can be folded to form a bag that firmly secures the used charcoal and associated ashes for transportation and disposal. The bag can have folding lines to fold and unfold for use.

The presently disclosed embodiments include a burner assembly for a cooking appliance that features a pullout including a removable burn pot. The pullout allows a user to easily remove the burn pot to empty burned ash and clean any residual materials from the burn pot. The pullout features a keyway design to aid in retention and easy removal from a cooking appliance. The pullout couples to a fuel chamber that houses an auger for supplying a fuel source and an ignitor. The pullout includes a gasket that provides a sealing engagement between the pullout and the cooking appliance.

A cooking grill with a cooking chamber, pellet fuel combustion unit, and ash cleanout system for releasing retained ash from the combustion unit through an access door without requiring the disassembly of the upper components of the grill. The combustion unit has a first end with a first end opening, and a second end with a second end opening. The ash cleanout system includes an access door adjacent to the second end, operable by a user from a position external to the cooking chamber through a pull link, and capable of a first position wherein the second end opening is closed to generally retain ash within the pellet fuel combustion unit, and a second position wherein the second end opening is open to release the retained ash to a separate removal location.

The invention relates to a tubular boiler with a heat exchange tube with at least one helical layer situated in a heat exchange chamber, and which includes a set of laterally joined spirals. The boiler includes, an inner side of the helical layer, an oven that is rigidly joined to said layer and connected to a feeder by means of which fuel is supplied. The boiler also includes an output collector for collecting ash and slag, which connects the inside of the heat exchange chamber to the outside of the boiler, and a forced-air-current generator that generates a movement of air inside the boiler and directs it to the oven. This movement of air moves the ash and slag along the at least one helical layer to the output collector.

A pellet stove includes: a furnace; a burner disposed in the furnace, a top of the burner being open; and a feed opening provided at a first sidewall of the burner. A through port for air intake and ash falling is provided at an underside of the burner. A grate supporting pellet fuel is provided above the through port. Auxiliary supports for sustaining bottom fire are disposed under the grate. The auxiliary supports are arranged higher than the through port, and the auxiliary supports are located at a side below the feed opening and cover an area not exceeding 1/2 of the area covered by the grate.

A pellet burner includes: a burner body having a combustion chamber and an open top; a feed opening at a sidewall of the burner body; a through port under the burner body; and a grate structure above the through port and including two tiers of supports both secured to the burner body. Supports in the first tier are lower than the adjacent supports in the second tier. The second tier of supports are staggered with the first tier. A passage is between the two tiers of supports. The passage is narrower than a diameter D of the pellet fuel. A spacing between two adjacent supports in the second tier is greater than D but smaller than 2D. The feed opening is above the grate structure by no less than 3D. The pellet fuel drops from the feed opening. Air entering via the through port disperses the burnt pellet fuel ash.

A fire pit is disclosed that includes a burn chamber, a removable fire grate, and a removable ash pan. The burn chamber is defined by an inwardly facing surface and a bottom. The removable fire grate is positioned within the burn chamber and supports combustible fuel for burning. The removable fire includes a plurality of holes sized to permit passage of ash from the combustible fuel, and at least one grip feature sized and shaped to permit a user to remove the removable fire grate from the fire pit by lifting the removable fire grate vertically through the burn chamber. The removable ash pan is positioned within the burn chamber beneath the removable fire grate, and includes, a side wall, a bottom, and at least one grippable surface configured to permit the user to remove the removable ash pan from the fire pit by lifting the removable ash pan vertically through the burn chamber.

A fire pit is disclosed that includes a burn chamber, a removable fire grate, and a removable ash pan. The burn chamber is defined by an inwardly facing surface and a bottom. The removable fire grate is positioned within the burn chamber and supports combustible fuel for burning. The removable fire includes a plurality of holes sized to permit passage of ash from the combustible fuel, and at least one grip feature sized and shaped to permit a user to remove the removable fire grate from the fire pit by lifting the removable fire grate vertically through the burn chamber. The removable ash pan is positioned within the burn chamber beneath the removable fire grate, and includes, a side wall, a bottom, and at least one grippable surface configured to permit the user to remove the removable ash pan from the fire pit by lifting the removable ash pan vertically through the burn chamber.

A fire pit is disclosed that includes a burn chamber, a removable fire grate, and a removable ash pan. The burn chamber is defined by an inwardly facing surface and a bottom. The removable fire grate is positioned within the burn chamber and supports combustible fuel for burning. The removable fire includes a plurality of holes sized to permit passage of ash from the combustible fuel, and at least one grip feature sized and shaped to permit a user to remove the removable fire grate from the fire pit by lifting the removable fire grate vertically through the burn chamber. The removable ash pan is positioned within the burn chamber beneath the removable fire grate, and includes, a side wall, a bottom, and at least one grippable surface configured to permit the user to remove the removable ash pan from the fire pit by lifting the removable ash pan vertically through the burn chamber.