Heating stove which includes a pyrolysis gasifier
AssigneeAblestien Industries, Inc.
InventorsFrederick P. Beierle, Bridell T. Boyer, Richard A. Suisse
Life of this patent
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Abstract
The heating stove system includes a fuel hopper (10) from which fuel is fed into a pyrolysis gasifier (12) by means of a fuel auger apparatus (14). Controlling the entry of biomass input and air into the gasifier and ignition of the material in the gasifier is a head valve apparatus (16) which includes an igniter (129). The gasifier (12) in operation produces carbon and fuel gas which are moved into a stove burner (90) by a blower apparatus (18). The operation of the heating stove system is automatically controlled from a thermostat (150).
Claims19
A heating stove, comprising:
- gasifier means for reduction of biomass input material to produce fuel gas and charcoal;
- means for burning the fuel gas produced by the gasifier means;
- means for drawing air through the gasifier means and for moving the fuel gas produced by the gasifier means to the fuel gas burner;
- means for automatically adding biomass input material to the gasifier means when the biomass input material present in the gasifier means is below a preselected level;
- means for automatically igniting the existing charcoal in the gasifier means in response to a thermostat changing to an on condition from an off condition;
- means for automatically controlling the level of charcoal in the gasifier means;
- and
- means for automatically terminating the operation of the gasifier means when the thermostat is in an off condition and the biomass input material has been substantially all reduced to charcoal.
An apparatus for controlling the entry of air and biomass input material into a gasifier, comprising:
- inlet means extending upwardly from the top of the gasifier, wherein said inlet means includes an opening therein through which biomass input material and/or air can enter the gasifier;
- valve means adapted and supported for vertical movement within the inlet means, said valve means having a sealing relationship with the interior surface of the inlet means;
- and
- means for moving the valve means between two vertical positions, the first position being such as to substantially close the opening in the inlet means, and the second position being such that the opening is exposed.
Dependencies are inferred from the claim text.