초록 ▼

Furnace structures having smoke and gas return are disclosed. The structures have a closed circuit combustion gas loop and a closed circuit liquid heat transfer loop. The two loops are circulated countercurrent to one another so that maximum heat transfer efficiency is achieved and exhaust emissions

Furnace structures having smoke and gas return are disclosed. The structures have a closed circuit combustion gas loop and a closed circuit liquid heat transfer loop. The two loops are circulated countercurrent to one another so that maximum heat transfer efficiency is achieved and exhaust emissions are reduced to a minimum.

대표청구항 ▼

Furnace structures having smoke and gas return, comprising: (a) combustion chamber means generating combustion gases containing heat of combustion; (b) heat exchanger means surrounding said combustion chamber means and directing said combustion gases away from said combustion chamber means; (c) conv

Furnace structures having smoke and gas return, comprising: (a) combustion chamber means generating combustion gases containing heat of combustion; (b) heat exchanger means surrounding said combustion chamber means and directing said combustion gases away from said combustion chamber means; (c) convector means for delivering heat to the inside of a dwelling; (d) means for circulating heat transfer medium parallel to and contiguous with said heat exchanger means countercurrent to said combustion gases, transferring said heat of combustion and delivering said heat of combustion to said convector means including a first pump; (e) means for recirculating a first portion of said combustion gases from said heat exchanger means to said combustion chamber means including a second pump compressing and circulating said combustion gases and a second portion of said combustion gases as waste product; (f) means for accumulating said combustion gases from said heat exchanger means and means for circulating said heat transfer medium through said means for accumulating; and (g) said means for recirculating including a relief valve connecting a first conduit to said combustion chamber and a second conduit to waste product.