| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system for regulating pressure in an elevator car, having relative simple construction for controlling atmospheric pressure in the passenger car without the need for special equipment. <P>SOLUTION: The system comprises one wind pressure generating means 2 for continuously generating wind pressure in one direction, piping 3a having one end opened into the passenger car 1, piping 3b having one end opened to the atmosphere, piping 3c having one end connected to the other end of the piping 3a and to the end of the piping 3b and having the other end connected to the wind pressure generating means, piping 4a having one end opened into the passenger car 1, piping 4b having one end opened to the atmosphere, piping 4c having one end connected to the other end of the piping 4a and to the other end of the piping 4b and having the other end connected to the wind pressure generating means, a valve 5 provided in the piping 3a, a valve 6 provided in the piping 3b, a valve 7 provided in the piping 4a, and a valve 8 provided in the piping 4b. It controls the plurality of valves 5-8 to be opened/closed in the state that the wind pressure generating means 2 continuously generates wind pressure in one direction, to reduce/increase pressure in the passenger car 1 and hold atmospheric pressure in the passenger car 1. <P>COPYRIGHT: (C)2009,JPO&INPIT |
