| 摘要 |
According to the present invention, an air conditioning system comprises: a main body having an external air inlet, which allows external air to be inserted therein, an air suction inlet, which allows air, having been used in an indoor space, to be inserted again, and an outlet which discharges heat-exchanged air to the indoor space; an air filter which filters mixed air where air inserted through the external air inlet and air inserted through the air suction inlet are mixed; a heat exchange unit which cools the mixed air passing through the air filter; a correction unit which is installed on a location closer to the downstream side of the main heat exchange unit and corrects the temperature of air to be provided for the indoor space by cooling or heating the air for which heat has been exchanged in the main heat exchange unit; a blower which is installed to be connected to the air outlet; and a preliminary heat exchange unit which is installed between the air filter and the main heat exchange unit and pre-cools or pre-heats the mixed air. According to the present invention, the air conditioning system mixes returned air with external air inserted from the outside and then pre-cools and pre-heats the mixed air with the preliminary heat exchange unit. Therefore, the air conditioning system increases heat exchange efficiency by the main heat exchange unit and can save time for heat exchange. |
