A fire pit includes a main body. The main body has a combustion chamber and an air passage communicating with the combustion chamber. The surface of the inner side of the air passage, close to the combustion chamber, has a plurality of vortex-generating portions. The fire pit can improve the temperature and the inflow of the air entering the combustion chamber from the air passage, thereby improving the combustion efficiency of the fuel burned in the combustion chamber effectively.

Exemplary embodiments of a system and method for bimodal air control in a kettle-style grill are configured to be detachably mounted to the exterior of a kettle-styled grill such as, but not limited to, a Weber charcoal grill. When mounted to the kettle-styled grill, a plenum-like component directs air flows to the interior of the grill's kettle via the kettle's lower body damper holes. A manually adjustable intake damper in the plenum component allows, restricts, or prevents a drawn ambient air flow into the plenum component. Separately, a forced air flow generated by a fan may also be provided into the plenum component. Adjustment of the intake damper may also adjust damper blades inside the grill's kettle. Ash that falls out of the kettle's damper holes falls through the plenum component and is captured in an ash receptacle that is removably mounted to the plenum component.

A heater may include a combustion chamber configured to burn pellets, the combustion chamber comprising a first barrier; a pellet hopper configured to contain the pellets, the pellet hopper comprising a second barrier; a ventilated chamber between the combustion chamber and the pellet hopper, the ventilated chamber being enclosed by: the first barrier; the second barrier; and one or more surfaces comprising one or more orifices allowing air to pass through the ventilated chamber; a flue for carrying heat from the combustion chamber; and a heat deflector disposed on the flue to deflect heat in a radial direction.

A stove with an ash collecting drawer is detachably connected with the base because the stove includes the stove body, the base and the ash collecting drawer. A baking tray is provided on the stove body. The stove body is provided with a first accommodating cavity. The first accommodating cavity is provided with a first accommodating opening. The ash collecting drawer is placed in the first accommodating cavity through the first accommodating opening. The base is provided with a second accommodating cavity. The second accommodating cavity is provided with a second accommodating opening. When the stove body is detached from the base, the stove body is placed in the second accommodating cavity through the second accommodating opening, so that firewood can be burned in the first accommodating cavity, and the ashes generated after combustion fall into the ash collecting drawer.

A fuel burner and optional modular heat utilizing appliances capable of exploiting heat from the fuel burner are shown and described. The burner includes a fire box including a fuel holder, a surrounding inner housing, and an outer shroud surrounding the inner housing . A plurality of air openings including flow adjusters admit air to the fire box. The inner housing and outer shroud are configured to supply air for secondary combustion of the exhaust. The burner may include a fan for forced air induction, and a fuel chute having a slidable closure for recharging the fuel holder from outside. At least one modular heat utilizing appliance may have thermal insulation for retaining heat.

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 collapsible fire pit that is easy to transport and store. The collapsible fire pit comprises a ring base. A first ring that extends upward from the ring base. And, a second ring that extends upward from the first ring. The collapsible firepit uses L-Shaped guides and pins to secure and collapse.

A heater (160) is provided for use in curing tobacco or other similar processes. The heater comprises: a furnace (211) having a chamber in which to burn fuel to generate heat; and a heat exchanger (230) for transferring heat from the heater to an airflow for use in curing the tobacco or other similar process. The airflow passes outside the heater. The heat exchanger has one or more pipes (220B-2,220A-2) that connect into the chamber of the furnace and is integrated into the furnace. For example, the heat exchanger may have a plurality of pipes (220B-2,220A-2) that connect into the chamber of the furnace, wherein the plurality of pipes (220B-2,220A-2) comprises two rows of pipes, one on each side of the furnace. The heat exchanger may further include a plenum (231B, 231A), wherein each of the pipes (220B-2,220A-2) leads upwards from the furnace chamber (211) to the plenum (231B, 231A). The heat exchanger may be integrated into the furnace by the use of one or more welded junctions.

A cooking apparatus having a cooking chamber, a cooking drawer, a solid fuel support drawer, gas burners, and an ash drawer. One of the cassettes positionable in the cooking drawer can be a belt conveyor which can transport food between end doors of the cooking chamber. A front door of the chamber, when open, allows for the cooking drawer with a partially-cooked food item to be removed and moved to another location for inspection/manipulation of the food item, and then returned to the cooking chamber. Infrared burners on the ceiling of the cooking chamber are directed down to the cooking drawer. Hot exhaust gases in the cooking chamber pass through the housing to a top area for food cooking/warming. A flickering flame assembly creates flickering flames in the back of the chamber which are visible from both the front and the back of the cooking apparatus.