Patent ID: 9234673
Filing Date: 2016-01-12
CPC Classification: F24F,Y10T

Claim Text:
1. An air handling unit, comprising: a blower configured to selectively move air from an air inlet of the air handling unit to an air outlet of the air handling unit along an airflow direction extending from the blower to the air outlet; a heat exchanger comprising a first slab and a second slab, each slab comprising an upper end and a lower end and disposed within the air handling unit between the air inlet and the air outlet such that the upper end is located nearer the air outlet than the lower end, and each slab of the heat exchanger further comprising: a subcooler crossover tube that delivers refrigerant from the subcooler tube outlet of the second subcooler tube of the first slab to the subcooler tube inlet of the first subcooler tube of the second slab; an expansion device providing fluid communication between the evaporator tube inlet of the at least one evaporator tube of the evaporator circuit of each of the first slab and the second slab and the subcooler tube outlet of the second subcooler tube of the subcooler circuit of the second slab, wherein the expansion device comprises only one inlet and the inlet is connected in fluid communication with the subcooler tube outlet of the second subcooler tube of the subcooler circuit of the second slab; and a drain pan disposed within the air handling unit upstream relative to the heat exchanger, wherein the first subcooler tube and the second subcooler tube of the subcooler circuit of each of the first slab and the second slab is positioned in a geometrical footprint of the drain pan as the drain pan is viewed from an upstream position in the primary airflow direction.