Patent ID: 6684653
Filing Date: 2004-02-03
Classification: F24F,H05K

Abstract:
An enclosure cooling system comprising:a cooling unit having a compressor, a condenser, an evaporator, a fan for recirculating enclosure air, a fan for circulating ambient air, an air-to-air heat transfer economizer, and means for controlling air flow; control means for operating said compressor, said fan for recirculating enclosure air, said fan for controlling ambient air and said means for controlling air flow; said control means has a first sensor for sensing the air temperature within said enclosure and a second sensor for sensing the temperature of ambient air; an enclosure air flow path from within said enclosure, past said fan for recirculating enclosure air, through said air-to-air heat transfer economizer, through said evaporator, and back into said enclosure; an ambient air flow path independent from said enclosure air flow path from outside said cooling unit, through said cooling unit and back outside said cooling unit; said means for controlling air flow has an enclosure inlet air damper and an enclosure outlet air damper; said control means opens said enclosure inlet air damper and said enclosure outlet air damper whenever said first sensor for sensing air temperature within said enclosure indicates an enclosure air temperature at or above a maximum set temperature.