Patent ID: 7618481
Filing Date: 2009-11-17
Classification: B01D

Abstract:
1. A core unit of a dehumidifier comprising: a drying agent absorbing water from moist air and giving water to dry air; two towers being parallelly mounted in the core unit and filled with the drying agent and having upper and lower openings; a lower air valve mounted on the two lower openings of the towers, wherein the lower air valve has two control valves being mounted securely to the lower air valve and communicating with the waterways and respectively communicating with the lower openings of the towers through the lower airway; a three way valve being mounted inside the airway between the waterways alternately closing one side of the airway; an upper air valve mounted on the upper openings of the towers, wherein the upper air valve comprises two check valves respectively mounted in the corresponding mounting hole of the upper air valve and the upper opening of the corresponding tower and each check valve comprising a chamber having: