| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction of a double film structure, intended for solving such problems that since conventionally some kind of greenhouse has such a structure that a roof and part of a wall surface has a double film structure, and an outside air layer is formed through supplying outside air to space coated with the double film through a blower, surplus outside air is diffused to the outside through an exhaust port, and it is aimed to avoid extension and break of the film through reducing stress top applied on the film when a strong wind blows, however, a structure of diffusing continuous and surplus outside air to the outside through an exhaust port causes many losses. SOLUTION: This construction of the double film structure, using the blower with a check valve is so constructed that each kind of sensors such as a pressure sensor is arranged in the construction divided with a double film, and when an internal pressure in the construction becomes a prescribed pressure, operation of the blower is stopped and an internal pressure is kept through a check valve set on the blower. It is intended to improve the earthquake resistance and wind resistance of the construction. COPYRIGHT: (C)2008,JPO&INPIT
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