Combustion grate for pellet fueled stove
AssigneePyro Industries, Inc.
InventorsOliver J. Whitfield, Phillip W. Robertson, Craig G. Wright
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 and a moveable elongate blade spaced above the upper surface of the grate to direct ash and clinkers through a plurality of elongate slots in the grate. The design of the planar plate and the movement of the blade serves to prevent the ash and clinkers from accumulating on the grate in amounts that could block the elongate slots and reduce the flow of combustion gas into the fire.
Claims26
A grate assembly for use in a stove fueled by biomass pellets, the grate assembly comprising:
- a planar plate including an upper surface and a lower surface opposite the upper surface, at least one elongate slot passing through the plate from the upper surface to the lower surface;
- an elongate blade having a first end and a second end opposite the first end and extending substantially parallel to the elongate slot;
- a first skid and a second skid attached to the elongate blade and resting on the upper surface of the planar plate to position to the blade in a plane spaced above the plate;
- and
- a moveable arm engaging the elongate blade, movement of the arm causing the blade to move in a direction substantially transverse to the elongate slot.
A grate assembly for use in a stove fueled by biomass pellets, the grate assembly comprising:
- planar means for supporting the biomass pellets, the planar means including an upper surface and a lower surface opposite the upper surface, at least one slot having a longitudinal axis passing through the plate form the upper surface to the lower surface;
- elongate means having a first end and a second end opposite the first end and extending substantially parallel to the slot;
- first support means and a second support means attached to the elongate means and resting on the planar means to support the elongate means in a plane spaced above the planar means;
- and
- moveable means engaging the elongate means, movement of the moveable means causing the elongate means to move in a direction substantially transverse to the slot, movement of the elongate means breaking up spent biomass pellets and directing ash into the elongate slots.
Dependencies are inferred from the claim text.