Temperature actuated flow control device

专利名称：Temperature actuated flow control device发明人：Lee A. Grove申请号：US07/427255申请日：19891025公开号：US04947886A公开日：19900814

摘要：A flow control device, such as a valve, has a body with two portions which definetwo valve chambers, an inlet, which is coupled to a source of pressurized fluid and whichopens into one of the valve chambers, and an outlet coupled to downstream devices,such as sprinkler heads, and which opens into the other valve chamber. A piece ofcollapsible tubing couples the two valve chambers. A shaft extends into the valve and isprovided with a mechanism for pinching the collapsible tubing shut which causes thecollapsible tubing to collapse due to the pressure exerted on its exterior by the

pressurized fluid surrounding it. A coil spring is attached to the shaft and the valve body.When the valve is closed, i.e., the collapsible tubing collapsed, the coil spring is biased tocause the shaft to rotate if released. The shaft is prevented from rotating by a fusiblelink. When the temperature to which the valve is exposed reaches or exceeds a

predetermined temperature, the fusible link melts. This releases the shaft for rotationand the coil spring rotates the shaft which unpinches the collapsible tubing. This permitsthe collapsible tubing to uncollapse, thus opening the valve.

申请人：REMOTE CONTROLS, INC.

代理机构：Barnes & Thornburg

更多信息请下载全文后查看