| 摘要 |
PROBLEM TO BE SOLVED: To shorten the total extension of piping, and miniaturize the main body of a ventilating unit, and cope easily with a housing of three stories or over; too, by dispensing with the piping space between upper and lower floors. SOLUTION: The central ventilator is of such constitution that the indoor of a building which has a plurality of floors above and below can be ventilated. In this case, there are equipped a tubular pipe which connects the interior of a room with the exterior and a ventilation unit body 20 which forms a compulsive air current inside this pipe, and these ventilation unit bodies 20 and the pipes are made independently for every floor of a building. |
