| 摘要 |
PURPOSE: To provide an air drying device which is able to increase drying and regeneration efficiency of air regardless of temperature change of the open air. CONSTITUTION: The device comprises a pair of drying towers (20,30) where a drying agent is packed, a dry air discharge pipe (21) which is connected with the upper side of the drying towers, a recyclable dry air pipe (31) which is connected with the dry air discharge pipe to transfer a portion of the dry air to one of the drying towers, an exhaust pipe (41) which is connected to the lower side of the drying towers, and a heat-exchanger (40) which exchanges heat between the recyclable dry air pipe and the exhaust pipe.
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