Heat exchanger
OwnerAlbert Woodrow Warnerinventor
Life of this patent
Estimating the term…
Abstract
This invention is a device for use in increasing the efficiency of existing heating units. This heat exchanger consists of conduits for channeling the furnace or wood stove exhausts in an extended pattern. Cold air is pumped into the heat exchanger at a point at which the exhaust smoke is released up the chimney. The cold air is channeled around the smoke containing flues by a thermostatically-controlled fan and baffles found in the heat exchanger. This air exits the heat exchanger at a point at which the smoke enters it. This heat exchanger puts out temperatures in excess of 450.degree. F. As depicted in the preferred embodiment, only by way of example, the heat exchanger is extremely lightweight and made of galvanized steel with caps at either end to facilitate cleaning.
Claims7
A heat exchanger, for use with a heating plant or like device having a hot-combustion-products or exhaust-products duct, comprising:
- an elongate housing;
- said housing having an exhaust-products inlet means and an exhaust-products outlet means at one end thereof, for coupling of said means, interpositionally, intermediate the length of an exhaust-products duct of such a heating plant or device, to cause said housing to be supported, in cantilevered fashion, only at said one end by said exhaust-products duct;
- first conduit means, within said housing, opening onto said inlet means for directing exhaust-products from said one end of said housing to the end opposite;
- second conduit means, within said housing, opening onto said outlet means for directing exhaust-products from said opposite end to said one end;
- means disposed at said opposite end of said housing communicating said first and second conduit means for transferring exhaust-products therebetween;
- means for forcing air into heat-exchanging contact with said conduit means to cause such air to be warmed;
- wherein,
- said air-forcing means comprises an air inlet means and an air outlet means formed in said housing at said one end, and passageways formed in said housing for moving air through said housing from said air inlet means and to said air outlet means in flow directions which are counter-current to exhaust-products flow directions therethrough;
- said first and second conduit means are vertically stacked to provide maximum contact between said conduit means and the air;
- said air inlet means has a triangular cross-section with a maximum cross-sectional area thereof being fixed adjacent to the uppermost portion of said vertically stacked second conduit means, and a minimum cross-sectional area thereof being fixed adjacent to the lowermost portion of said vertically stacked second conduit means, to cause said air inlet means to proportion air intake equally across said second conduit means;
- and
- said air outlet has a triangular cross-section with a maximum cross-sectional area thereof being fixed adjacent to the uppermost portion of said vertically stacked first conduit means, and a minimum cross-sectional area thereof being fixed adjacent to the lowermost portion of said vertically stacked first conduit means, to cause said air outlet means to proportion air discharge equally across said first conduit means.
Dependencies are inferred from the claim text.