JPS6211632Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fire extinguishing system that quickly senses and responds to the occurrence of a fire and activates a fire extinguishing mechanism, particularly one that is activated in response to the heat of the fire. Conventionally, this type of fire extinguishing system has been used, for example, to explode a fire extinguisher using the generated heat, to destroy a fire extinguishing valve to activate a sprinkler, or to break an electrical insulation part or to break an electrical contact. There are various types of pumps, including one in which a pump is operated by connecting a pump, but all of these are equipped with a mechanism that responds to the heat generated.

In this thermal response mechanism, a bimetal material or a fuse is usually used as a detection sensitive member, but each of these has the following advantages and disadvantages. In other words, the former bimetallic material deforms reliably in response to temperature changes even at relatively low temperatures, but its physical reaction speed is slow and it takes time to deform, so in the event of a fire, the response is delayed, which can lead to serious problems. It had On the other hand, the latter type of fuse always responds quickly when it receives flame and reaches a predetermined fusing temperature, but in the case of a low-temperature fire where the temperature of the fusing member at the location where it is installed does not rise rapidly,
There was an inconvenience that the response was delayed. Generally speaking, items that use conventional bimetal materials or fusing materials such as lead or zinc will last 1 to 2 minutes after being exposed to flame under normal settings, or 3 minutes at a slower rate.
It took many minutes, and I felt bad that I couldn't stand up to the basics of emergency operations.

In view of the above points, the present invention utilizes the low temperature sensing characteristics of bimetal materials and the rapid reaction of fusing members to quickly react and prevent fires in both low temperature fires and flame fires. The aim is to provide a fire extinguishing system that can

An embodiment of the present invention will be described below with reference to FIG. In the same figure, 1 is strong at room temperature.
A low-temperature cutting member that melts at around 140℃ to 150℃.
This fusing member 1 is made of a German silver fuse or a vinyl chloride string, and one end 1a of the fusing member 1 is fixed to a vertical wall surface 2, and the other end 1b is connected and fixed to a rotatable stopper 3. And vertical wall 2
A spring 4 is loaded between the stopper 3 and the stopper 3 to spring the stopper 3 to the right in the drawing.
is pivotally supported, and the distal end portion 3b faces the bimetal material 5. This bimetal 5 has an inverted L shape, and its base end 5a is fixed or pivotally supported on a horizontal wall surface 6, and its distal end 5b is engaged with the distal end 7a of the operating member 7. As usual, this bimetal material 5 is made up of two types of metal plates with different coefficients of thermal expansion, with a metal having a large coefficient of thermal expansion disposed on the stopper 3 side, and a metal having a low coefficient of thermal expansion disposed on the opposite side. has been done. The base end 7b of the operating member 7 is biased counterclockwise by a spiral spring 8 as shown in the figure, and is locked by the tip 5b of the bimetallic material 5 at room temperature. When the temperature rises to release the engaged state, the operating member 7 is rotated as shown by the chain line in FIG. It's summery.

In the fire extinguishing system constructed as described above, in the event of a low-temperature fire with a gradual temperature rise gradient, the fusing member 1 does not easily melt even if it is a low-temperature fusing member made of a German silver fuse or the like, but a bimetal material that is sensitive to temperature changes is used. 5 curves and deforms to the right in the figure to release the engagement state with the operating member 7, the operating member 7 is rotationally biased by the spiral spring 8, and the fire extinguisher 9 can be destroyed by its protrusion 7c. can. Therefore, it is possible to prevent low-temperature fires with a relatively long period of time. In addition, in the event of a flame fire with a steep temperature gradient, the fusing member 1 made of a German silver fuse is immediately (1 or 2 seconds) quickly fused by the heat of the flame before the bimetal material 5 is deformed, and the stopper 3
is biased by the spring 4 to press and deform the bimetal material 5 and release the locking of the operating member 7, so that the protrusion 7c of the operating member 7 destroys the fire extinguisher 9 in the same manner as described above, and the temperature rises at a gradient. It is possible to quickly respond and extinguish a flaming fire with little time to spare.

FIG. 2 shows another embodiment of the present invention. In the figure, 20 is a hollow cylinder, and one end of this hollow cylinder 20 is fixed to a vertical wall surface.
An operating member 17 is mounted inside the cylinder 20, and the operating member 17 has a sharp protrusion 17a formed at its tip, and a spring 18 at its proximal end that springs the protrusion to the left in the figure. equipped. and,
A hole 20a is bored in the wall of the cylinder 20.
A vertical end 15a of a bimetallic member 15 having a horizontal L-shape is fitted into 0a and engages with a protrusion 17a of the operating member 17, thereby locking the operating member 17.
This bimetal material 15 is swingably supported by a pivot 15b, and a bimetal material 15c is formed between the vertical portion and the pivot 15b.
A fusing fuse 11 such as a vinyl wire or a German silver fuse is stretched between the end of the fuse 5 and the fixed part 12 to prevent the bimetal material 15 from swinging. Further, 14 is a spring that springs the bimetal member 15 downward in the figure, and the cylinder 20 and the bimetal part 1
It is loaded between 5c and 5c. Note that 19 is a fire extinguisher.

In the fire extinguishing system having the above configuration, as described above, in the event of a low temperature fire, the fuse 11
does not melt immediately, but the bimetallic portion 15c curves and deforms to release the engagement between the tip 15a of the bimetallic material 15 and the protrusion 17a of the operating member 17, so that the protrusion 17a of the operating member 17 fires the fire extinguisher 19. It can be used to extinguish fires in response to low-temperature fires. In addition, in the event of a flame fire, the fuse 11 is quickly fused due to the heat of the flame, and the bimetal material 1
5 is swung downward by a spring 14 that springs downward in the drawing, and releases the engagement between the tip 15a of the bimetal member 15 and the protrusion 17a of the operating member 17, thereby destroying the fire extinguisher 19 in the same manner as described above. This allows rapid fires to be extinguished immediately.

Note that in the first embodiment, the spring 8 is used as the biasing member for the operating member 7, or in the second embodiment, the spring 14 is used as the biasing member for the bimetallic material 15, but these are, for example, balanced. It is clear that other accumulating members such as weights can be applied. Also in the first embodiment, the stopper 3
If the spring 4 and the fuse 1 are directly attached to the bimetal material 5 as in the second embodiment, a synergistic effect can be achieved between the fusing action of the fuse and the deformation action of the bimetal material 5 depending on the temperature rise level. can be expected, and faster response actions can be expected.

As described above, according to the present invention, it is possible to react sensitively to both low-temperature fires and flame fires.
Furthermore, it is possible to provide a fire extinguishing system with high mechanical reliability.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing one embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view showing another embodiment of the present invention. 1, 11... Fuse (melting member), 3... Stopper, 4, 14... Spring, 5, 15... Bimetal material, 7, 17... Operating member, 8, 18... Spring, 9, 19... ...Fire extinguisher.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An operating member that operates a fire extinguishing mechanism such as a fire extinguisher by receiving a stored force such as a spring, and a non-operating member that operates against the stored force at room temperature. and a bimetallic material that is engaged and held and released from the engagement when the temperature rises, and this bimetallic material is biased to the release position by the stored force of a spring or the like when the temperature of the stretched fusing member rises and fusing is performed. A fire extinguishing device characterized by: (2) The fire extinguishing device according to claim 1, wherein the fusing member is a low-temperature fusing fuse that melts at 140°C to 150°C, such as a German silver fuse or a vinyl chloride wire.