| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilator for preventing dew condensation in a wall body while being maintainable the healthy quality of room air. SOLUTION: The ventilator is provided with a supply fan 3 for supplying air from an outside 1 into a room 2, an exhaust fan 4 for exhausting air from the room 2 to the outside 1, and an operation control means for controlling the operation of an air supply means and an air exhaust means to keep the room at positive pressure in a summer mode and at negative pressure in a winter mode. Thus, dew condensation in the wall body can be prevented and the healthy quality of room air can be maintained. COPYRIGHT: (C)2005,JPO&NCIPI |
