Patent ID: 7093452
Filing Date: 2006-08-22
Classification: F24F,F28D,Y02B

Abstract:
1. An air-conditioner unit comprising: a housing having at least one air inlet for receiving air to be conditioned and at least one outlet for discharging conditioned air into a room, at least one fan for moving air from said inlet to said outlet, an air to air heat exchanger to cool said air by diverting and cooling a portion of said air through an evaporative cooling means to form evaporatively cooled, diverted air, heat exchange occurring across a plurality of barriers between said evaporatively cooled, diverted air and said air moving from said inlet to form an outlet stream of cooled air, a vapour compression-type cooling system having: a control system that at least determines the temperature of the room air and controls the operation of said air-conditioner to operate only said air to air heat exchanger when said room air temperature is maintained below a pre-determined level and operates both said air to air heat exchanger and said vapour compression type cooling system when the room air temperature is above said pre-determined level, wherein the at least one air inlet comprises a first air inlet receiving outside air and a second air inlet receiving air from the conditioned space, said air from said first and second inlets being mixed prior to entering said air to air heat exchanger.