Patent ID: 8658944
Filing Date: 2014-02-25
Classification: F23L,F24F

Abstract:
1. An apparatus for maintaining air flow through a pipe into a high-efficiency sealed combustion condensing furnace comprising: a generally cylindrical tube having a first end, a second end, a side, an inner side wall and a generally hollow interior; a circular screen located within the generally hollow interior wherein air passing from the first end to the second end passes through the circular screen and thereafter mixes with a combustible gas and wherein the mixture of the combustible gas and air are heated in a furnace; a circular heating device located in the generally hollow interior of the cylindrical tube wherein the circular heating device is electrically connected to the circular screen wherein the circular heating device heats the circular screen and wherein the circular screen obtains a temperature hot enough to melt ice and snow located on the circular screen thereby maintaining air flow into the furnace for combustion; wherein the circular heating device surrounds the circular screen and wherein the circular heating device runs along the inner side wall of the generally cylindrical tube; a first opening along the side of the generally cylindrical tube wherein water accumulated within the generally hollow interior may exit the generally cylindrical tube through the first opening; an electrical cable connecting the circular heating device to a power source; a second opening along the side of the generally cylindrical tube; wherein the electrical cable is magnetic and wherein the circular screen is magnetic and wherein the electrical cable is magnetically attracted to the circular screen and wherein the electrical cable is secured to the circular screen by magnetic forces; and an o-ring located around the second opening of the side of the generally cylindrical tube wherein the electrical cable passes through the o-ring and wherein the o-ring prevents a liquid from passing through the second opening of the side of the generally cylindrical tube.