| 摘要 |
PURPOSE: An indoor ventilation device of a non-power structure is provided to improve a polluted air discharging ability and to save energy. CONSTITUTION: An indoor ventilation device(1) of a non-power structure comprises an orifice pipe(2), an air inhalation tapered hole(6), an air discharging tapered hole(8), a weathercock(19), a supporting member(4), a polluted air discharging hose(13), and an air passage(18). The orifice pipe includes a hole and is installed to be rotate-moved throughout 360°by wind. The air discharging tapered hole is linearly communicated with the air inhalation tapered hole, and an outlet where air is discharged is formed in a rear end of the orifice pipe. The supporting member supports the orifice pipe to be rotatable and fix-installed on a wall surface of a building. One end of the polluted air discharging hose is fitted into the supporting member. The other end with of the polluted air discharging hose is extended lengthy toward a floor surface of the building. The air passage is formed in the orifice pipe so that the polluted air is discharged through the hole of the orifice pipe. [Reference numerals] (AA) Polluted air |
