JET FAN

PROBLEM TO BE SOLVED: To provide a jet fan in which a connector does not descent to a position lower than construction limit height even when a side part suspension member disposed on a tunnel ceiling wall is damaged, in the jet fan installed by being suspended from the tunnel ceiling wall in a road tunnel.SOLUTION: A jet fan 1 includes: a blower cylinder 2 including a motor and an impeller mounted on a rotary shaft of the motor in a cylindrical casing; and a muffling cylinder 3 of the cylindrical casing on both sides of the blower cylinder 2. A side part support member 6 provided on an upper surface side of a reinforcement plate 5 provided on both sides of the side surfaces of the blower cylinder 2 and the side part suspension member disposed on a tunnel ceiling wall are connected via a connector, and an apex support member provided on both tip apexes of the muffling cylinder 3 and an apex suspension member disposed on the tunnel ceiling wall are connected via the connector. The jet fan is configured so that a connector descending suppression member 15a is provided on the outside of each side part support member 6.SELECTED DRAWING: Figure 2 【課題】道路トンネル内のトンネル天井壁に吊り下げて設置されるジェットファンにおいて、トンネル天井壁に配設した側部吊部材が破損しても連結具は建築限界高さより低位へ降下しないジェットファンを提供する。【解決手段】円筒状ケーシング内にモータとこのモータの回転軸に装着した羽根車とを備えた送風筒２と、その送風筒２の両側に円筒状ケーシングの消音筒３を備え、送風筒２の側面の両側に設けられた補強板５の上面側に設けた側部支持部材６とトンネル天井壁に配設した側部吊部材とを連結具を介して連結し、消音筒３の両先端頂部に設けられた頂部支持部材とトンネル天井壁に配設した頂部吊部材とを連結具を介して連結するジェットファン１において、側部支持部材６の各々の外側に連結具降下抑制部材１５ａを設けた構成とする。【選択図】図２