Heating stove with heat regulating system

Claim 1

A heating stove comprising: a combustion chamber having front, back, top, bottom and side walls; an outer shell at least partially enclosing said combustion chamber including an auxiliary back wall spaced from said back wall to provide a first rearward air space between said back wall and said auxiliary top wall spaced from said top wall to provide a second air space between said top wall and said auxiliary top wall for passage of heated air into a room to be heated; a heat extracting manifold mounted to at least one wall of said combustion chamber for transferring heat from combustion gasses to air; a blower for blowing air to flow in heat transfer relationship with said heat extracting manifold, said blower supported by said outer shell; a hot air outlet from said outer shell allowing heated air to exit from said wood burning stove; a flue outlet from said outer shell for allowing combustion gasses from said combustion chamber to pass to a flue; control means supported by said outer shell and operable to cause a flue clearing portion of air blown by said blower to proceed out said flue outlet, the flue clearing portion of air proceeding out the flue to minimize any back flowing of combustion gases which might otherwise be caused by a column of cool air in the flue; and a valve controlled by said control means and wherein the opening of said valve by operation of said control means allows at least some air blown by said blower to proceed out said flue outlet; and wherein said valve includes a blocking member and a pipe having an entry hole for flue clearing air, said entry hole in a path of blown air from said blower, and said pipe leads air blown in said entry hole to proceed out said flue outlet and said blocking member is controlled by said control means to selectively block air from entering said entry hole.