Pellet grills including a control system that implements, manages, and/or controls various ignition-based protocols are disclosed. An example pellet grill includes a cooking chamber, a burn pot, an ignitor, and a controller. The ignitor extends into the burn pot and is configured to ignite pellet fuel located within the burn pot. The controller is configured to detect a temperature pattern of the cooking chamber corresponding to a flame out condition of the burn pot. The controller is further configured, in response to detecting the temperature pattern, to command the ignitor to activate during a first duration. The controller is further configured to determine, following expiration of the first duration, whether a temperature of the cooking chamber increased during the first duration. The controller is further configured, in response to determining that the temperature has not increased during the first duration, to command the ignitor to activate during a second duration.

Embodiments include a wood pellet burner unit with a sliding floor hopper. The wood pellet burner unit includes a wood pellet fire pit, a wood pellet kettle burner, a wood pellet barbeque burner, and/or a wood pellet smoker, or the like. The sliding floor hopper includes an upper loading section having an opening therein that receives wood pellets, and a staging section coupled to the upper loading section and stages the wood pellets received from the upper loading section. A sliding floor is disposed atop a staging surface of the staging section and through a slit in the staging section. The sliding floor oscillates between a forward position and a back position. The sliding floor oscillates between a forward position and a back position to automatically and periodically feed the wood pellets to a lower region of the wood pellet burner unit on a continuous basis.

Embodiments include a wood pellet burner unit with a sliding floor hopper. The wood pellet burner unit includes a wood pellet fire pit, a wood pellet kettle burner, a wood pellet barbeque burner, and/or a wood pellet smoker, or the like. The sliding floor hopper includes an upper loading section having an opening therein that receives wood pellets, and a staging section coupled to the upper loading section and stages the wood pellets received from the upper loading section. A sliding floor is disposed atop a staging surface of the staging section and through a slit in the staging section. The sliding floor oscillates between a forward position and a back position. The sliding floor oscillates between a forward position and a back position to automatically and periodically feed the wood pellets to a lower region of the wood pellet burner unit on a continuous basis.

The present disclosure provides an automatic feeding device that can automatically feed a material to a target place. The device comprises a rack, at least one locking member which are attached onto the rack, and a controller. Each of the at least one locking members is configured to maintain a bundle of the material onto the rack in a locked state, and to release the bundle of the material from the rack in an unlocked state; and the controller is coupled to, and configured to control, each of the at least one locking member to be in the unlocked state based on a feeding command. The material can be firewood, and the target place can be a fire, and the device as such can further include a temperature sensor, disposed on the rack and coupled to the controller.

The present disclosure provides an automatic feeding device that can automatically feed a material to a target place. The device comprises a rack, at least one locking member which are attached onto the rack, and a controller. Each of the at least one locking members is configured to maintain a bundle of the material onto the rack in a locked state, and to release the bundle of the material from the rack in an unlocked state; and the controller is coupled to, and configured to control, each of the at least one locking member to be in the unlocked state based on a feeding command. The material can be firewood, and the target place can be a fire, and the device as such can further include a temperature sensor, disposed on the rack and coupled to the controller.

The present invention relates to a self-powered time sharing reaction system and method for organic materials pyrolysis and combustion. The system comprises a time sharing reactor for pyrolysis and combustion, a feeder, a recovery apparatus for pyrolysis volatility products and a flue gas purifier. The whole process mainly consists of two time sharing stages of pyrolysis and combustion: organic materials are sent into the time sharing reactor for pyrolysis and combustion, and solid thermal carrier rapidly heats the organic materials and the pyrolysis reaction takes place. The produced pyrolysis volatility products enter the recovery apparatus for the recycling of the pyrolysis gas and pyrolysis oil; when the pyrolysis reaction is over, fill air into the time sharing reactor for pyrolysis and combustion to combust with the rest of the pyrolysis volatility products and the pyrolysis residue in the reactor. The heat produced during the combustion heats the solid thermal carrier, the flue gas is released after being purified, the heated solid thermal carrier is left in the time sharing reactor for pyrolysis and combustion to provide energy for the next organic materials pyrolysis. The process is thus repeated. The system has the advantages of cascade utilization of energy, short time of pyrolysis reaction and high efficiency of heat transfer.

A downflow hearth furnace includes a refractory-lined furnace lid. A burner is thermally coupled through the lid. A combustible material conveyor system communicates with an entry port. A variable speed motor driven rotatable combustible material disperser is positioned under the entry port and coupled to a rotation shaft. A refractory-lined furnace shell has a top edge mating with a bottom edge of the furnace lid and can be raised and lowered between an open position and a closed position. A bed of gas-permeable heat resistant material suspended on a layer of filter material defines a bottom end of a hearth disposed above a plenum. An outlet duct communicates with the plenum and has a horizontal outlet flange. A fixed scrubber input duct has an inlet flange positioned to mate with and form a seal with the outlet duct flange when the furnace shell is in the closed position.

A pellet stove, having a pellet hopper, a combustion chamber, a heat exchanger and a pellet movement assembly, adapted to move the pellets from the hopper into the combustion chamber. The pellet movement assembly is located and configured so as to be heated by exhaust gases from the combustion chamber and the pellets spend a sufficient amount of time in the pellet movement assembly, where oxygen is prevented from freely flowing in, so that the pellets are torrefied during transit to the combustion chamber.

A pellet stove, having a pellet hopper, a combustion chamber, a heat exchanger and a pellet movement assembly, adapted to move the pellets from the hopper into the combustion chamber. The pellet movement assembly is located and configured so as to be heated by exhaust gases from the combustion chamber and the pellets spend a sufficient amount of time in the pellet movement assembly, where oxygen is prevented from freely flowing in, so that the pellets are torrefied during transit to the combustion chamber.

A biomass gasification system for producing aqueous or water gases after biomass has been carbonized is disclosed. Temperatures of a thermal decomposition and gasification furnace can be quickly and uniformly stabilized with smaller thermal loss. Reaction residuals after thermal decomposition and gasification are prevented from adhering on the inner surface of the system. The biomass gasification system comprises: a main body, a first cylindrical member, a first cut-out member, a first cylinder accommodating therein a first screw conveyor, a second cylindrical member, a second cut-out member, a second cylinder accommodating therein a second screw conveyor. The first cylinder is so constructed that it penetrates the main body, the first cylindrical member and the first cut-out member in an axial direction. The first screw conveyor, the second screw conveyor and the second cut-out member have a plurality of gasifying agent ports, respectively.