JPS642240Y2 - - Google Patents

Description

[Detailed Description of the Invention] As shown in Fig. 1 and Fig. 2, the flame/heat detector of this invention has a base 8 and a photosensitive element 12 mounted in an insulating case 6, and conductive rods 7, 7' are connected to the case 6, and metal plates 9, 9' with low melting metal 10 in between are connected to the ends of the rods. If the light of a fire falls within the flame detection angle θ in Fig. 2, the photosensitive element 12 is exposed to light, and a first signal is sent by a required circuit (not shown) in the base 8 to sound the buzzer Bz. This is because, in the electrical wiring diagram shown in Fig. 13, when the detector D detects the light of a fire, the relay _R1 is activated, closing the circuit of the buzzer Bz.

Next, the end part (heat sensitive part) of the flame/heat sensor of the present invention
When the heat of the fire is detected due to the melting of the low-melting metal ₁₀ in Since relay _R3 is activated, SOL (solenoid) is activated and the 9th
The electromagnet 19 in the figure attracts the plunger 20 downward, rotates the operating lever 18 via the arm 21 to crush the seal of the high-pressure gas cylinder, and automatically injects the extinguishing agent from the injection head 4 through the pipe 25. It is designed to carry out fire extinguishing activities.

The flame/heat detector of the present invention is installed on the side wall or top plate of the duct 1 at a location where it is easy to detect the flame/heat of the fire in the duct 1, as shown in FIG. An alarm is issued by the element circuit, and then the fire extinguishing system is automatically started by sensing the heat of the fire caused by the fuse melting, that is, the melting of the low-melting metal 10. At this very early stage, by first sensing the light of the flame,
Since it is designed to be able to issue a fire alarm quickly and then automatically extinguish the fire by detecting the heat of the fire, it is possible to detect the initial occurrence of flames extremely quickly, making it even more effective. , which has the advantage of being able to fully achieve the purpose of initial fire extinguishing, and in addition, it saves labor, effort, time, and energy since conventionally it was necessary to build and install flame detectors and heat detectors separately. It is possible to eliminate the disadvantage of a huge waste of money, and the present invention uses just one detector to detect flames and flames as described above.
Since it can detect heat, it requires less effort, time, and effort.
It can save a lot of time and money, and its installation is simple and easy.
It is a highly efficient and economical sensor.

[Brief explanation of the drawing]

Figure 1 is a partially longitudinal front view of the main part, Figure 2 is the front view of the main part.
Fig. 3 is a front view with the heat sensing section in different states, Fig. 4 is a side view of Fig. 3, Fig. 5 is a front view showing the installation of the flame/heat sensor of the present invention, Figure 6 is a side view of Figure 5, Figure 7 is a front view showing the installation of the original flame/heat detector in different states, Figure 8 is a side view of Figure 7, and Figure 9 is the original flame/heat detector. A diagram showing a fire extinguishing system equipped with a detector, Figure 10 is
Fig. 11 is a diagram showing the main flame/heat detector and fire extinguishing head arranged in the duct; Fig. 12 is a diagram showing the operating state of the
The figure shows the operating state of FIG. 7, and FIG. 13 is an electrical wiring diagram. Explanation of the symbols: 1 is the duct, 2 is the hood, 3 is the flame/heat detector, 4 is the extinguishing agent injection head, 5 is the grease filter, 6 is the case, 7 and 7' are the conductive rods,
8 is a base, 9 and 9' are metal plates, 10 is a low melting metal,
11 is a nut, 12 is a photosensitive element, 13 is a connection cord, 14 is a storage box, 15 is a drug storage container,
16 is a locking piece, 17 is a spring, 18 is an operating lever, 19 is an electromagnet, 20 is a plunger, 21
is an arm, 22 is a spring, 23 is a turnbuckle, 24 is a stopper, 25 is a pipe, 26 is a flow direction of extinguishing agent, 27 is a control box,
28 is a plug.

Claims (1)

[Scope of utility model registration request] A substrate 8 and a photosensitive element 12 are provided in a single insulating case 6, and conductive rods 7 and 7' are connected and installed in the case 6, with a low melting metal 10 interposed between the ends thereof. The metal plates 9 and 9' are connected to each other, and if the light from the fire comes within the flame detection angle θ, the photosensitive element 12
is exposed to light and sends a first signal from the required circuit in the board 8 to sound the buzzer Bz, and then,
When the heat of the fire is detected due to the melting of the low melting metal 10 at the end, a second signal is sent by the required circuit in the base plate 8, and the sensor D activates the relay _R2 ,
Furthermore, the relay R ₃ is activated to activate the solenoid, the electromagnet 19 sucks the plunger 20 downward, and the operating lever 18 is rotated via the arm 21 to crush the seal of the high-pressure gas cylinder and supply the extinguishing agent to the pipe. 25, the flame/heat detector automatically sprays from the spray head 4.