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US 12,146,657 B2Granted
Grateless, back drafted and back fed pellet stove
OwnerStephen Thomas Spevak, Frederick Arlen Leavittinventors
Life of this patent
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Abstract
A system for combusting fuel comprising an apparatus that receives fuel that is characterized as comprising interstitial spacing and wherein oxidants pass through the interstitial spacing of the fuel to sustain a combustion reaction at the interface of a reaction chamber while the byproducts of combustion pass into the reaction chamber.
Claims17
A system for combusting fuel comprising:
- one or more reaction chambers comprising one or more caches of fuel and one or more combustion zones wherein the caches of fuel form an interface between the one or more reaction zones and;
- one or more oxidants;
- wherein the one or more caches of fuel comprise individual units of fuel with interstitial spacing that enables the one or more oxidants to flow through the fuel and;
- one or more dispensers comprising:
- one or more inlets configured to receive one or more of the fuel or oxidants;
- and
- one or more outlets configured to release the fuel and oxidants into one or more caches of fuel;
- wherein one or more of the outlets of the one or more dispensers are in communication with the one or more caches of fuel during combustion;
- wherein the one or more fuels contained in the one or more caches of fuel forms an interface between the one or more oxidants and the one or more reaction chambers;
- wherein the caches of fuel fit within the reaction chamber in such a way as to force the one or more oxidants to pass through the interstitial spacing of the one or more caches of fuel;
- wherein the one or more oxidants pass through the one or more caches of fuel without the use of a grate;
- wherein the one or more caches of fuel and the one or more oxidants passing through the one or more caches of fuels interact at the interface between the one or more fuels and the one or more oxidants to enable combustion.
9 more elements
A method of operating a grateless, back drafted and back fed stove for combusting fuel consisting of discrete pieces, wherein the stove comprises:
- one or more fuel dispensers in communication with one or more grateless caches in communication with one or more reaction chambers, one or more draft inducers, and one or more igniters;
- and
- one or more oxidants and fuel consisting of discrete pieces and having interstitial spacing between the discrete pieces, the method comprising:
- dispensing the fuel to the one or more caches via the one or more fuel dispensers;
- feeding the one or more oxidants to the one or more reaction chambers through the one or more caches and through the interstitial spacing of the fuel via the one or more draft inducers;
- heating the fuel at the interface between the one or more caches and the one or more reaction chambers in the presence of the one or more oxidants until the fuel and one or more oxidants ignite;
- combusting the fuel at the interface between the one or more caches and the one or more reaction chambers;
- passing the combustion products from the one or more interfaces of the one or more caches and the one or more reaction chambers into the one or more reaction chambers via the one or more draft inducers;
- discharging all combustion products from the one or more reaction chambers via the draft inducer.
6 more elements
Dependencies are inferred from the claim text.