| 摘要 |
<p>An sprinkler has a body (10A) defining an extinguishant intet (11A) and an outlet (12A) and is divided internally by a diahragm (16A) defining with the body (10A) an intermediate chamber (15A) and normally isolating the inlet (11A) from outlet (12A). The diaphragm (16A) has a drain orifice (17A) allowing an extinguishant pressure balance on both sides of the diaphragm. There is an exhaust port (28) from the intermediate chamber (15A) which is normally closed by a valve (29) controlled by a heat sensitive device (31) serving upon attainment of a predetermined temperature value to open the valve (29) thus causing extinguishant exhaustion from the intermediate chamber (15A) which results in diaphragm movement to place the inlet (11A) in communication with the outlet (12A) and sprinkler operation.</p> |
