| 摘要 |
PURPOSE: An air circulation preheating and inner reversing defrostation type air conditioning system is provided to easily perform heating or defrost by an opening/closing state or extent of a damper according to a heating or defrosting mode. CONSTITUTION: An air circulation preheating and inner reversing defrostation type air conditioning system comprises a case(30), an air supply unit(50), and an exhaust unit(60). The case comprises a first heat exchanging chamber(32) and second heat exchanging chamber(33). The first and second heat exchanging chambers comprise outdoor air supplying holes(34,35). An indoor air supplying hole(36) is formed in the first heat exchanging chamber and an outdoor discharging hole(37) is formed in the second heat exchanging chamber. The air supplying unit comprises a first heat exchanger(51) arranged in the first heat exchanging chamber, a first auxiliary heater(52) preheating air has passed through the first heat exchanger, and an air supplying fan(53) supplying cold air or hot air to an indoor side. The exhausting chamber unit comprises a second heat exchanger(61), a second auxiliary heater(62), and an exhausting fan(63). The second heat exchanger is arranged in the second heat exchanging chamber, thereby being connected to the first heat exchanger by a heat media line. The second auxiliary heater preheats the air passing through the second heat exchanger. The exhausting fan discharges the air to an outdoor side.
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