Self-distributing combustion grate for pellet fueled stoves
AssigneePyro Industries, Inc.
InventorsOliver J. Whitfield, John B. Tacke, Jr.
Life of this patent
Estimating the term…
Abstract
Stoves fueled by biomass pellets are provided with a grate assembly that supports the pellets for combustion and directs combustion gas into the fire. The grate assembly includes a passive grate of equally or unequally spaced rods. The design of the rods serves to prevent the ash and clinkers from accumulating on the grate in amounts that could reduce the flow of combustion gas into the fire. In one embodiment, the rods define a surface that serves to distribute unburned fuel pellets from a location where they are deposited from a fuel feed conduit.
Claims12
A grate assembly for use in a stove fueled by biomass pellets wherein the biomass pellets are introduced onto the grate assembly through a fuel feed conduit, the grate assembly comprising:
- a frame;
- and
- a plurality of elongate rods supported by the frame in a parallel arrangement, the distance between adjacent rods being sufficient to prevent unburned biomass pellets from falling between adjacent rods, wherein the plurality of elongate rods define a grate having a left edge portion, a right edge portion, and a center portion that is positioned beneath the fuel feed conduit, the plurality of elongate rods forming the left edge portion and the plurality of rods forming the right edge portion being below the plurality of elongate rods forming the center portion.
Dependencies are inferred from the claim text.