Stove with self-air drawing and heating for primary burn

Abstract

A stove including spiraling walls to create multiple vertical inlets, spiraling layers of spaces that can self-draw and self-heat the air from outside of the stove into the burn zone, and a rim that covers the top area of the spiraling walls and leaves an opening above the fire. From burning, a convection draft draws air from the side-environment of the stove through the vertical inlets to circulate in the spiraling layered space, and to supply to the fire horizontally. The circling of air will be heated by the fire through conduction and irradiation. This design enables extra heated air directly for an enhanced primary burn. The stove can include side walls of different profiles, e.g., straight, tilted and curved walls and different spiraling profiles of spiraling layered spaces, e.g., linear, exponential, and exponential-polynomial.

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