Collapsible secondary-burn biomass stove and associated embodiments
OwnerFrederick Douglas Heuchlinginventor
Life of this patent
Estimating the term…
Abstract
A portable, collapsible, secondary combustion biomass stove which maintains the environmental and efficiency benefits of a secondary-burn biomass stove while removing the need for the weight and volume of permanent insulation. The stove can be quickly and easily assembled or disassembled without the use of tools for storage and transport. The outer housing of the stove provides stability while shielding the user from the high temperatures of secondary combustion within the chimney and combustion chamber, and collapses for stove transport, insulation may be added to the stove using material indigenous to most campsites, whereby stove operating temperature and efficiency increases while toxic gas release and fuel consumption decrease.
Claims18
A collapsible, portable biomass stove comprising:
- a. a collapsible housing apparatus which expands to a predetermined volume from a fraction of its collapsed volume, wherein in an expanded volume the stove is capable of supporting a cooking surface, said housing having an air and fuel intake opening for allowing insertion of biomass fuel into an interior of the housing in an expanded volume;
- b. a chimney apparatus inserted into the interior of the housing in an expanded volume which serves as a means to convey heat and combustion products away from a combustion chamber located in the interior of the expanded volume within the chimney, of appropriate dimension to serve as a means of maintaining wood gases released in said combustion chamber at sufficiently high temperatures as they rise through said chimney apparatus as to achieve secondary combustion of wood gases, one side of said chimney apparatus containing at least one opening for the passage of fuel and air into said chimney apparatus;
- c. an insulation chamber located in between the exterior of the chimney apparatus and an interior surface of the housing in an expanded volume, said insulation chamber contiguous with said chimney apparatus, wherein the insulation chamber allows for the use of insulation material to shield the user during a combustion process from high temperatures during the secondary combustion in the chimney apparatus and raise the operating temperature of said chimney apparatus.
A collapsible, portable biomass stove comprising:
- a. a collapsible housing apparatus which expands to a predetermined volume from a fraction of its collapsed volume, wherein in an expanded volume the stove is capable of supporting a cooking surface, said housing having an air and fuel intake opening for allowing insertion of biomass fuel into an interior of the housing in an expanded volume;
- b. a fuel and air intake apparatus which serves as a means to convey biomass fuel and air to a chimney apparatus, said fuel and air intake apparatus containing at least one opening to allow for the insertion of said chimney apparatus;
- c. a chimney apparatus inserted into said opening of said fuel and air intake apparatus within the interior of the housing in an expanded volume which serves as a means to convey heat and combustion products away from a combustion chamber located in the interior of the expanded volume of the housing and within the chimney, of appropriate dimension to serve as a means of maintaining wood gases released in said combustion chamber at sufficiently high temperatures as they rise through said chimney apparatus as to achieve secondary combustion of wood gases, one side of said chimney apparatus containing at least one opening for the passage of fuel and air into said chimney apparatus;
- d. an insulation chamber located in between the exterior of the chimney apparatus and an interior surface of the housing in an expanded volume, said insulation chamber contiguous with said chimney apparatus, wherein the insulation chamber allows for the use of insulation material to shield the user during a combustion process from high temperatures during the secondary combustion in the chimney apparatus and raise the operating temperature of said chimney apparatus.
A method of maintaining the environmental and efficiency benefits of a secondary-burn biomass stove while removing the need for the weight and volume of permanent insulation, the method comprising:
- a. expanding a collapsible housing apparatus and placing it on a level surface, and
- b. inserting a biomass fuel and air intake apparatus into predetermined openings in said collapsible housing apparatus, and
- c. inserting a chimney apparatus into a predetermined opening in the biomass fuel and air intake apparatus, and
- d. inserting insulation material into an insulation chamber interior to the collapsible housing apparatus and exterior to both said biomass fuel and air intake apparatus and said chimney apparatus, said insulation chamber contiguous with said chimney apparatus.
Dependencies are inferred from the claim text.