American chimney furnace

Abstract

One embodiment of a furnace or heat collection device installed in or above the firebox of a residential fireplace, chimney, commercial smokestack, etc. The embodiment is typically made of metal or other highly heat conductive material, but other materials may also prove suitable. One manifestation of the embodiment is a hollow walled oblong tube. It is anticipated that the embodiment can take many other shapes including, circular, oval, square, rectangular, triangular, polygonal, etc., but other shapes may also prove suitable, in order to achieve maximum efficiency and safety and in order to fit a variety of fireplaces or chimneys or smokestack structures. The embodiment is seamlessly integrated with the primary heating or energy system of the premises.

1 . A furnace or other heat collection device comprised of:
 a.) metal or other highly heat conductive material in the shape of a hollow walled oblong tube, circular tube, square tube, triangular tube, rectangular tube, polygonal tube or other shape, around and or through which hot air and gases rising from a fire pass, contacting all surfaces and heating the air contained within the hollow walls, and   b.) an air supply duct or tube forcing or drawing untreated air through the interior walls of the hollow walled furnace, and   c.) a hot air duct or tube providing an exit for heated clean air from the furnace directly to a heating system providing heat to habitable space.   
   
   
       2 . The installation or insertion of the furnace in  claim 1  in or above a new or existing fireplace, fireplace insert, wood or pellet burning stove, firebox, smoke chamber, flue, chimney or smokestack. 
   
   
       3 . The furnace in  claim 1 , further including a temperature sensor integrated within the furnace in  claim 1 , wherein the temperature sensor provides temperatures of the furnace directly to and controlling a thermostat. 
   
   
       4 . The furnace in  claim 1 , further including a thermostat controlled partially by the temperature sensor in  claim 3 , wherein the thermostat controls the switching functions between a primary or other heating system and the furnace contained in  claim 1 . 
   
   
       5 . The process or method by which the furnace in  claim 1  is connected directly to and switches between the primary or other heating system by means of a temperature sensor in  claim 3 , connected thermostat in  claim 4 , wherein the furnace in  claim 1  provides heat to other habitable areas by means of a wood burning or other burning fire.
 Whereby said device will collect heat rising from a traditional fireplace or smokestack for broader distribution throughout habitable space.