221results about "Grates" patented technology

A portable pellet fired heating element for mounting to a grill or stove and comprising a gravity fed pellet holder, a unitary tubular structure having a burner, an air intake and an exhaust chute. Fuel may be supplied to the pellet holder by various supply means such as a conveyer, ramp, scooped, held in bulk in a hopper, and like pellet supply structures and methods. Fuel is fed to the air-cooled insulated burner area onto a decomposer grate, which defines the primary combustion area and which is partially open to the atmosphere for air intake. An adjustable high-pressure flow of gas or vapor is introduced to the primary exhaust chute below the decomposer grate to create a low pressure flow above the grate and which upon ignition, cause flames to be pulled into the pellet mass on the grate. In operation, air from the primary air intake maintains hot charcoal in the primary combustion area, and the secondary combustion area provides a steady flow of wood gas that mixes with a predetermined or adjustable amount of air supplied by the secondary air intake to maintain the flame. The super heated gasses and any ash are provided to the grill or stove by means of the exhaust chute. For cleaning purposes, an electrical / mechanical device may be provided to move the decomposer grate or to provide a sudden burst of high gas pressure.

Method and apparatus for sensing the overall and / or distribution of fuel weight disposed on the top surface of the grate of a grate-fired device and adjusting the fuel infeed as a function of the flow rate of steam generated by the boiler. A plurality of weight sensors are disposed remote from the grate at selected locations associated with the support for the grate and which provide signals which are convertible to useful representations of the overall weight and / or the distribution of fuel weight over the top surface of the grate in real time and independent of the forward movement of the grate and associated changes in the weight of the fuel on the grate at a given time.

A fire pit includes an engine having at least one wall defining an inner chamber. At least one primary air aperture is defined through the inner chamber wall at a first, lower level, and at least one secondary air aperture is defined through the inner chamber wall at a second, upper level. A fuel grate is supported within the inner chamber at a level between the lower level and the upper level.

A furnace includes: a furnace housing; a perforated tray mounted in the furnace housing; and a stirring rod disposed rotatably on the perforated tray. The stirring rod has top and bottom ends, two opposite lateral ends, a middle portion, and opposite first and second portions, each of which extends from the middle portion to a respective one of the lateral ends. Each of the first and second portions has an inclined face that extends between the top and bottom ends of the stirring rod from the respective one of the lateral ends toward the middle portion of the stirring rod, that is inclined relative to the perforated tray, and that faces toward the perforated tray.

The present application relates to improvements to granular fuel burning boilers such as wood pellet boilers and burners therefor. In particular, there is disclosed a wood pellet boiler having a combustion chamber, wherein an access door for said combustion chamber comprises a wood pellet burner assembly mounted on the interior side thereof. In this way, the wood pellet burner assembly is movable from and into the combustion chamber of the wood pellet boiler when the access door is opened and closed, respectively.

The present invention relates to cooking grates for use in connection with grills, ovens and / or range tops. In one embodiment, the present invention relates to a cooking grate that is designed to be used in conjunction with a barbecue grill, where the cooking grate is designed to evenly distribute heat across the entire surface of the grate in order to eliminate, and / or reduce, any “hot” or “cold” spots thereon. In another embodiment, the present invention relates to a cooking grate that contains one or more heat transmitting members positioned in such a manner that heat is transmitted from the central portion of the cooking grate to the edge portions thereof, thereby facilitating a more even heat distribution across the entire cooking surface of the cooking grate.

The invention discloses an abrasion resisting fire grate segment which comprises a fire grate segment body (1) and a connecting block (2) movably connected with the upper portion of the fire grate segment body (1). A ventilation groove (11) is formed in one end of the lower portion of the fire grate segment body, a mounting groove (12) used for being fixedly connected with a fire grate rack is formed in the other end of the lower portion of the fire grate segment body, and a connecting piece (13) in the shape similar to J is arranged in the middle of the lower portion of the fire grate segment body. A boss (14) is arranged on the upper surface of the end, corresponding to the ventilation groove (11), of the fire grate segment body (1), a ventilation hole (141) is formed in the upper surface of the boss (14), and the ventilation hole (141) is communicated with the ventilation groove (11). The connecting block (2) is a long strip plate, one end of the connecting block is connected with the boss (14) of the fire grate segment body (1), and the other end of the connecting block is flush with the end, corresponding to the mounting groove (12), of the fire grate segment body (1). The abrasion resisting fire grate segment has the advantages of being simple in structure, reasonable in design, convenient to use, easy to dismount, easy to maintain and long in service life, facilitating connection of one another and the like.