Thermal ampoule for sprinkler

Abstract

An electrical thermal glass ampoule for fire fighting sprinkler is disclosed. The ampoule(200) according to the present invention comprises a closed hollow cylindrical glass casing(100), an electrically heating coil(120) installed inside of said glass casing, a negative electrode(140) provided on outer surface at bottom end of said casing and electrically connected with one end of said coil, a positive electrode(142) provided on outer surface at side wall of said casing and electrically connected with the other end of said coil, and heat expansive gas(G) entrapped inside the casing. The glass ampoule(200) can be precisely manufactured as a single body integrated with a thermal coil(120) inside of the casing, have good install handiness due to no necessity of coil being wound around the ampoule and has long term duration because the coil(120) is installed inside the glass casing(100) and, thus can be prevented from corrosion. Further, the glass ampoule(200) according to the present invention has another advantage of much faster actuating response because the coil(120) is heated inside the glass casing and, thus, can give heat directly to the gas(G).

Description

technical field [0001] The invention relates to an electric heating glass tube used for a shower head. Background technique [0002] Generally, a sprinkler head is a fire extinguishing device installed on the ceiling of a building. When a fire is found, it is used to spray fire extinguishing liquid or water to extinguish the fire. [0003] Such as figure 1 As shown, a typical sprinkler head H includes: a fire extinguishing liquid discharge nozzle 1 connected to a fire extinguishing liquid supply pipe 33 through a pipe joint 23; an O-ring-shaped main body 2 protruding downward from the outer surface of the discharge nozzle 1 ; the fire extinguishing liquid diffusion plate 6 installed horizontally under and on the lower end of the main body 2 in the shape of this O-ring; the valve plate 3 that keeps the discharge nozzle 1 closed under normal conditions; the valve plate 3 installed on the valve plate 3 and the main body 2 In the space between the bot...

AI Technical Summary

Problems solved by technology

The disadvantage of these conventional sprinklers in this respect is that they are very slow to respond in the initial stages of a fire, since in the event of a fire it is not until the ambient temperature reaches the melting point of this cryogenic lead, or the expansion of the vial break point, these sprinklers only trigger

However, it is not an easy task to regularly inspect a large number of ceiling-mounted sprinkler heads

[0009] Second, in most cases, the fire always starts from a specific place, and only the sprinklers installed in this local place are triggered, while the sprinklers installed in other adjacent rooms are not triggered, so it is impossible to prevent Fire spreads to adjacent rooms

In addition, it is more difficult to prevent corrosion when the coil is made of smaller wires in order to be driven with a small power

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