| 摘要 |
PURPOSE:To reduce an air resistance, to decrease a load to a fan motor and to prevent generation of mildew and offensive odor of a humidifier element by so installing the humidifier as to incline it to an air flow in a vent passage and to form a gap between an outer periphery and a sidewall of the passage. CONSTITUTION:A prefilter 6, a main filter 7, a heat exchanger 8 and a humidifier 9 are sequentially installed from an atmosphere intake port 2 or a circulating intake port 3 side in a vent passage 5 from the port 2, 3 to a discharge port 41. The humidifier 9 is so inclined to an air flow as not to become a blocking state and to reduce the air resistance, and so installed that its outer periphery is not brought into contact with four sidewalls 51 for forming the passage 5. As a method for installing the humidifier, a method for placing and fixing it on a gate frame 91 is employed. Thus, since most of the air passed through the exchanger is passed through a gap between the outer periphery of the humidifier and the sidewalls of the passage, a ventilating pressure loss is small. |
