公开(公告)号：US6019679A

公开(公告)日：2000-02-01

申请号：US188797

申请日：1998-11-09

申请人： William P. Lloyd

发明人： William P. Lloyd

IPC分类号： A62C2/14 ,  A62C2/24 ,  A62C2/12

CPC分类号： A62C2/241 ,  A62C2/14 ,  F24F13/14 ,  F24F2011/0098

摘要： A fire and smoke damper includes a flat-coil spring actuator to rotate the blades included within the damper between the "normally open" position to the "closed" position when a fire or smoke condition occurs. The damper may include one or more blades, using a linkage connector to ensure simultaneous operation of each blade. The flat-coil spring is held under tension by an actuator (such as a fusible link) to maintain the blades in the "normally open" position. Once the spring is released, a pivot arrangement coupled between the spring and the blade(s) functions to quickly rotate the blade(s) into the closed position, thereby blocking the passage of smoke or fire. The blades may include blade seals to ensure a tight seal.

摘要翻译： 防火和烟雾阻尼器包括一个扁平螺旋弹簧致动器，当发生火灾或烟雾状况时，将包括在阻尼器内的叶片在“常开”位置旋转到“关闭”位置。 阻尼器可以包括一个或多个叶片，使用联动连接器来确保每个叶片的同时操作。 扁平螺旋弹簧由致动器（例如可熔连杆）保持在张力下，以将叶片保持在“常开”位置。 一旦弹簧被释放，联接在弹簧和叶片之间的枢轴布置用于快速地将叶片旋转到关闭位置，从而阻止烟雾或火焰的通过。 叶片可以包括叶片密封件以确保密封。