| 摘要 |
An automatic fire extinguisher comprises a sealed length of PVDF tubing 1 formed into a coil or other convoluted shape, and containing a quantity of BCF or the like vaporisable fire extinguishant under pressure. At normal ambient temperatures the strength of the tube is sufficient to withstand the internal extinguishant pressure. However, when the tube is heated above a specified temperature by exposure to a fire the tube wall softens and the extinguishant pressure rises so that the tube bursts to release the extinguishant over the fire. |
