Heat exchanger with improved condensate disposal arrangement

Claim 1

A fan coil structure for use in air-conditioning systems comprising a cabinet open at the ends and having bottom, side, and top walls; means for creating an airflow through said cabinet from end to end; a drain pan mounted in said cabinet contiguous to the bottom wall thereof and extending in a direction lengthwise of the cabinet, said pan being formed with bottom, side, and end walls; a plate-finned coil unit mounted above said drain pan and inclining upwardly therefrom at an angle of less than 45* to the horizontal and in the direction of said airflow, the lower end of said coil unit terminating in said pan and spaced in proximity to one end wall thereof, said pan having a top wall extending outwardly from the upper edge of said one end wall along the upper edges of said sidewalls toward the lower end of said coil and forming in conjunction with the contiguous portions of the pan a drainage sump portion when said cabinet is disposed in vertical position; and a drain aperture formed in said sump portion contiguous to the bottom wall of said pan and said one end wall thereof, and a second drain aperture located in a sidewall of said pan in proximity to the outer edge of said top wall.