Opening system for pressure relief windows

The present invention discloses a pressure relief system window opens. The window opens relief system comprising: a damper disposed above the wall (7) of the inlet side of the pressure relief window (1), the relief window (1) is provided through the damper wall (7) of the return air to the intake side One end of the pipe (5), the pipe (5) close to the inlet side of the air side of the first fixed pulley is provided with two ends (4), the rope (3) by a first fixed pulley (4) and the pipe (5) respectively extend to throttle wall (seven) side of the inlet and return air side of the rope (3) at the inlet end and side relief window (1) of the free end below the connector. The present invention provides a solution so that the operator-side wall of the throttle from the return air damper, you can pull into the wind located side window through back pressure relief damper side handle, after relief through open throttle.