| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation system to further improve general purpose properties. SOLUTION: An opening 8d is formed in a wall part 8 to partition the interior and the exterior of a house. By an exhaust fan, indoor air is forcibly discharged to the exterior of a house through an exhaust port formed in the wall part 8 different from the opening 8d. Air is always supplied and exhausted between the interior and the exterior of a house through a supply and exhaust opening 18 communicating directly with a part of the opening 8d. Outdoor air is forcibly and rapidly supplied indoors by a rapid air supply fan 22 through a rapid air supply opening 20 directly communicating with the other partial opening 8d. Indoor air is forcibly and rapidly exhausted to the exterior of a house by a rapid exhaust fan 21 through a rapid exhaust opening 19 communicating directly with a remaining part of the opening 8d.
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