Patent ID: 6915655

Claim:
An air conditioning systems, comprising: a duct having a suction passage for drawing external air and a discharge passage for discharging room air, the suction passage and the discharge passage being split with a split plate; a suction fan and a discharge fan in the suction passage and the discharge passage, respectively; a dehumidifier having a desiccant wheel rotatably mounted in an opening in a split plate of the duct to cross, and exposed to the suction passage and the discharge passage; a regenerative heater in the discharge passage of the duct adjacent to an air inlet of the dehumidifier for heating the air introduced into the dehumidifier; a regenerative heat exchanger mounted both in the suction passage and the discharge passage on a room side with reference to the dehumidifier for making heat exchange of the air flowing in the suction passage and the air flowing in the discharge passage; and a heat pump having a first heat exchanger in the discharge passage between the dehumidifier and the regenerative heat exchanger, and a second heat exchanger in the suction passage on the air outlet of the regenerative heat exchanger, wherein the desiccant wheel comprises: a shaft mounted on the opening; and a plurality of paddles, each paddle having a fixed width and extending from the shaft in a radial direction, the plurality of paddles including a plurality of air pass holes.