Dry sprinkler

摘要

A dry sprinkler is provided that includes a conduit with a fluid inlet and a fluid outlet, a valve positioned near the fluid inlet and a fire sprinkler head that is positioned near the fluid outlet. The fire sprinkler head is operably connected to the valve by a tie. When the fire sprinkler head reacts to an elevated temperature condition, the tie is engaged and is operable to open the valve. In a normal state, before the fire sprinkler head reacts, the tie can be unbiased toward the fire sprinkler head. The tie can also be non-rigid and/or in a non-compressed state within the conduit. The conduit of the dry sprinkler can be flexible.

主权项

1. A dry sprinkler comprising:
a fluid conduit that is configured to couple to a fluid supply, the conduit having a first end and a second end; a valve that is positioned proximate to the first end of the conduit, the valve having (i) a closed state that prevents fluid from the fluid supply from flowing through the conduit, and (ii) an open state that allows fluid from the fluid supply to flow through the conduit; a fire sprinkler head positioned proximate to the second end of the conduit, the fire sprinkler head having a thermally responsive element that reacts to an elevated temperature condition; an unbiased tie positioned within the conduit and being operably coupled to the valve, the unbiased tie having at least an unengaged state and an engaged state; and an engagement action that is coupled to the unbiased tie, the engagement action being triggered when the thermally responsive element reacts to the elevated temperature condition; wherein (i) the unbiased tie is not biased towards the sprinkler head in the unengaged state, (ii) the triggering of the engagement action causes the unbiased tie to change from the unengaged state to the engaged state, and (iii) changing the unbiased tie to the engaged state from the unengaged state allows the valve to change from the closed state to the open state; and wherein the engagement action is configured to apply tension to the unbiased tie when the engagement action is triggered.