| 摘要 |
PROBLEM TO BE SOLVED: To contrive not to lose the function of ventilation at the time of a disaster by installing an air-supply cylinder and an exhaust cylinder with an air-supply path and an exhaust path communicated with each of air inlets and air outlets formed to the lower sections and upper sections of living rooms of each floor on the outside of a building. SOLUTION: An air-supply cylinder 14 and an exhaust cylinder 15 having square- shaped cross sections respectively and made of concrete are mounted while being brought into contact with one outside and an external surface on the reverse side in a building frame 10a. F1>=F0 holds in the sectional area F0 of an air-supply path 16 and the sectional area F1 of the exhaust path 17. An exhaust fan may also be set up to the outlet of the exhaust path 17. The air-supply path 16 and the exhaust path 17 are communicated beforehand with air inlets 12 formed to the lower sections of the living rooms 11 of each floor and air outlets 13 formed to upper sections respectively. A drain 18 is set up beforehand to the lower section of the air-supply cylinder 14. Consequently, a natural draft, in which the outside air is flowed into the living rooms 11 through the air-supply path 16 and the air inlets 12 and discharged through the air outlets 13 and the exhaust path 17, is generated. Accordingly, the energy of ventilation can be conserved. |
