Patent ID: 8267156
Filing Date: 2012-09-18
Classification: F04D,F24F

Abstract:
1. A comfort system outdoor unit of the type having a compressor, a heat exchanger coil and a fan for drawing air inwardly through the heat exchanger coil and discharging it upwardly from an opening in the top of the unit, comprising: an orifice structure installed in said top opening in the vicinity of the fan, said orifice structure being generally an inverted U-shape in cross section form with a radially outer leg extending over a top edge of said coil and a radially inner leg extending generally downwardly and then flaring radially outwardly at a lower end of said orifice structure inner leg; and an insert that is registrable with said orifice structure inner leg so as to form an upward extension of said orifice structure inner leg and thereby provide for a streamlined flow of air over said end.