KR100815931B1 - Automatic fire extinguisher with fire prevention screen for a gas range - Google Patents

Abstract

An automatic fire extinguisher for a stove is provided to sense smoke, scent of cooking foods or temperature, and to be operated automatically in the event of a fire breakout on a stove. An automatic fire extinguisher includes: a gas sensor(80) to sense a gas leak from a stove(1); a gas circuit breaker(70) to interrupt a gas valve in response to a signal from the gas sensor; a fuse blink(30) and a smoke sensor(40) to sense frame and smoke from a kitchen counter; and a fire extinguisher(60) to spray fire extinguishing substance through a nozzle(20) installed over a stove hood. Inside the stove hood, a fire prevention screen(100) is formed to block toxic gases and flame from outside, and a suspension(200) is formed to suspend the fire prevention screen in response to a signal from the fuse blink and the smoke sensor during a fire breakout.

Description

Automatic fire extinguisher with fire prevention screen for a gas range}

1 is an installation of a conventional gas stove automatic fire extinguishing device.

Figure 2 is an installation of the automatic fire extinguishing device for a gas range equipped with a fire screen according to a first embodiment of the present invention.

3 is an external view of the fire screen according to FIG.

4 is a cross-sectional view showing a state in which the fire screen of Figure 2 is rolled up.

Figure 5 is a use state according to the first embodiment of the automatic fire extinguishing device for a gas range equipped with a fire screen according to the present invention.

6 is an installation of the automatic fire extinguishing device for a gas range equipped with a fire screen according to a second embodiment of the present invention.

7 is a perspective view of the fire screen according to FIG.

8 is a perspective view showing another embodiment of the fire screen according to FIG.

9A and 9B are sectional views taken along line VII-VII of FIGS. 7 and 8, respectively.

10 is a state diagram used in the automatic fire extinguishing device for a gas range equipped with a fire screen according to a second embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

1.Gas range 10 ... Range hood

20 ... Nozzle part 30 ... Fuse Blink

40.Smoke sensor 50.Control part

60 ... Fire Extinguisher 70 ... Gas Breaker

80 gas sensor 100,200 fire screen

200,400 ... suspension 310 ... Firescreen Body

320 ... injector 330 ... wire

410 Winding roller 420 Solenoid

430 ... Guide Roller

The present invention relates to an automatic fire extinguishing device for a gas cooker, and more particularly, to a gas cooker having a fire screen that can automatically extinguish a fire by automatically detecting a smell, smoke or temperature generated when cooking food. It relates to an automatic fire extinguishing device.

In general, an automatic fire extinguishing device is installed in the upper part of the gas range where a high risk of fire occurs in kitchens such as homes and restaurants.

Such a conventional automatic fire extinguishing device has a structure in which a nozzle unit installed on a range hood of an upper portion of a gas range and a fire extinguisher body installed in a space of one side are interconnected through a pipe for transporting a digestive liquid.

Looking at the conventional automatic fire extinguishing device for a conventional gas range, as shown in Figure 1, the fire extinguishing agent injection nozzle unit 20, the temperature-sensitive fuse inside the range hood 10 of the upper gas range (1) Blink (fusible rink) 30 and the smoke sensor 40 is provided, the control unit for releasing the tension of the wire 31 connected between the fuse 30 and the main body of the fire extinguisher (60) on one side of the cabinet ( 50) and the main body of the fire extinguisher 60, and the nozzle unit 20 and the main body of the fire extinguisher 60 are connected to each other through a pipe and the smoke sensor 40 is connected to the control unit 50. It is made, the flame or smoke caused by the fire is detected by the fuse link 30 or the smoke sensor 40, respectively, and the tension of the wire (not shown) by the sensing action at this time to extinguish the fire extinguisher 60 from the main body Medicine is automatically through the nozzle unit 20 It can be sprayed to control fires.

Although not shown, the controller 50 is electrically connected to a solenoid connected to the operation lever of the fire extinguisher 60 body. Therefore, the controller 50 controls the operation of the solenoid so that the fire extinguisher 60 may powder the extinguishing agent by automatically pulling the safety pin of the operation lever in case of fire.

On the other hand, the gas circuit breaker 70 is installed on the gas valve or the gas supply line connected to the gas sensor 80 attached to the range hood 10 to automatically shut off the supply of gas when the gas leaks. In this case, the reference temperature is set at 50 to 60 ° C., which is a relatively low temperature, and thus, when a fire occurs in the gas range 1, the fuse blink 30 is detected first at the initial stage of fire, before the automatic fire extinguishing device is operated. Then, the detection signal is transmitted to the gas circuit breaker 70 through the controller 50 so that the gas shutoff valve blocks the gas supply pipe so that the gas supply is blocked.

The gas circuit breaker 70 is an electronically controlled shut-off valve, which receives the output control by the gas electronic control circuit provided in the gas circuit breaker 70 to close the gas supply passage therein, while the gas tube is fired. When gas leaks due to damage, gas blocking control through a gas electronic control circuit is performed by detection of a pressure sensor (not shown) in itself.

However, the above-described automatic gas fire extinguishing device for a gas stove has a large fire extinguishing agent spraying radius because the nozzle unit 20 for injecting the extinguishing agent is installed in the range hood 10 located above the predetermined height from the gas range 1. As the amount of injection decreases toward the gas range 1, it is impossible to perform an effective fire extinguishing operation, so even if a fire extinguishing agent is rapidly injected, the fire cannot be suppressed early.

The present invention has been made in consideration of the above-described conventional problems, and an object thereof is to provide an automatic fire extinguishing device for a gas range having a fire extinguishing device in which a rapid fire suppression is made.

In order to achieve the above object, the present invention is installed in the range hood to detect a gas leaking from the gas range, a gas circuit breaker for receiving a signal from the gas sensor to shut off the gas valve, installed in the range hood And a fire extinguisher for detecting a flame and smoke of a countertop and a fire extinguishing device for receiving a fire signal from the fuse and smoke sensor and injecting the extinguishing agent of the fire extinguisher into a gas range through a nozzle installed on the range hood. An automatic fire extinguishing device for a gas range, comprising: a fire prevention screen installed inside the range hood so that the nozzle part is located at the center and suspended to the gas range in case of fire, and blocking toxic gases and flames from the outside; Receive signal from sensor It characterized in that it comprises a suspension device for releasing the hanging fire screen.

In addition, the present invention is installed in the range hood to detect the gas leaking gas in the gas range, a gas circuit breaker for blocking the gas valve by receiving a signal from the gas sensor, and installed in the range hood flame and Automatically for gas ranges equipped with a fuse and smoke sensor for detecting smoke and a fire extinguishing device for receiving a fire signal from the fuse and smoke sensor and injects the extinguishing agent of the fire extinguisher into the gas range through a nozzle unit installed on the range hood. In the fire extinguishing device, the nozzle part is installed on both sides of the inside of the range hood so that the nozzle is located at the center, and the fire gas is filled with a high pressure filled extinguishing agent through a spray nozzle which is suspended to the gas range side by its own weight in case of fire. Fire screen for spraying to the side and the fuse link and fire in case of fire Receiving a signal from the sensor is characterized by configured by comprising a suspension device for suspending the fire protection screen by releasing the engagement state of the fire protection screen.

The features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

DETAILED DESCRIPTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Like reference numerals refer to like elements, and only different parts will be mainly described so as not to overlap for clarity.

<Example 1>

As shown in FIG. 2, the present invention is installed in the range hood 10 to detect a leaking gas generated in the gas range 1, and a gas sensor 80 and a signal transmitted from the gas sensor 80. And a gas circuit breaker 70 for blocking the gas valve, the fuse hood 30 and a smoke sensor 40 installed on the range hood 10 to detect flame and smoke of a countertop, and the fuse block 30 and It is basically provided with a fire extinguishing device for receiving a fire signal from the smoke sensor 40 to spray the extinguishing agent of the fire extinguisher 60 to the gas range 1 through the nozzle unit 20 installed on the range hood 10, Here, the nozzle unit 20 is installed inside the range hood 10 so as to be located at the center, and is suspended to the gas range 1 side in case of fire, and blocks the toxic gas and flames from the outside, and fires. Signal from fusible link 30 and smoke sensor 40 It is configured to include a suspension device 200 to suspend the fire screen 100 by releasing the support state with the lower end of the fire screen 100 received.

Of these, the remaining components except for the fire screen 100 and the suspension device 200 are the same as the conventional automatic fire extinguishing device for a gas range will be omitted herein.

As shown in FIG. 3, the fire screen 100 is made of a flame retardant material that does not generate toxic gas without easily being burned. In addition, the fire screen 100 is formed in a sufficient length that can reach up to the gas range 1 located at the bottom in a state where the upper end and the lower end are fixed to the inner wall of the range hood 10 as the upper and lower portions are open. do.

To this end, rings are attached to the top and bottom of the fire screen 100, respectively. And on the top of the fire screen, the fixing bracket 110 for fixing to the inner wall surface of the range hood 10 is fixed to the ring. The ring on top of the fire screen 100 is to maintain the fire screen 100 in a certain shape.

In addition, the ring 120 of the lower end of the fire screen 100 is to roll up the bottom of the fire screen 100 to be installed in a simple and minimal volume. The ring 120 has an appropriate weight to extend the fire screen 100 is dried while falling down during the fire.

The fire screen 100 configured as described above is fixed to the inner wall surface of the range hood 10 through the fixing bracket 110 after the nozzle unit 20 for injecting the extinguishing agent of the fire extinguisher 60 is positioned at the center thereof. .

And, as shown in Figure 4, the fire screen 100 is a suspension device installed inside the range hood 10 in a state of being rolled up around the ring 120 attached to the bottom of the screen to minimize the installation area ( 200) the lower end is supported. At this time, the open upper portion of the fire screen 100 is in communication with the exhaust port installed in the range hood (10).

The suspension device 200 is a solenoid operated when a fire signal is received from the fusebled 30 and the smoke sensor 40 and fixed to a plurality of inner wall surfaces of the range hood 10. The suspension device 200 in the present embodiment has been exemplified as a solenoid, but is not necessarily limited thereto, and may be configured according to various operation methods.

In addition, the suspension device 200 is set to receive the fire signal from the fuse link 30 and the smoke sensor 40 before the fire extinguishing device to enable the fire screen 100 to operate immediately before the operation of the fire extinguishing device.

The automatic fire extinguishing device for a gas range configured as described above is operated as follows in case of fire.

First, when the fire occurs due to the gas range 1 being ignited, the flame or smoke at this time is first transmitted to the range hood 10 installed directly above, and at the same time, the fuse blink is installed in the range hood 10 ( 30) and the smoke sensor 40 is delivered.

At this time, if the fuse link 30 detects an abnormal temperature of 50 ~ 60 ℃ or more difficult to occur in a normal cooking state, and sends a fire signal to the controller 50. The control unit 50 sends this signal back to the gas circuit breaker 70 to block the gas supplied to the gas range 1.

Nevertheless, if the fire continues to progress, the fire signal is generated by the smoke sensor 40 that shears or detects the smoke by the fuse link 30 that is overheated by the flame by the controller 50 and the signal is controlled by the control unit 50. It is transmitted to the suspension device 200 via the (50).

The suspension device 200 receiving the signal is operated to release the support state that was supporting the lower part of the fire screen 100, and the lower part of the fire screen 100 falls to the lower part by the weight of the ring 120. . In this process, the fire screen 100, which is rolled up, is stretched downward to be suspended.

As shown in FIG. 5, as a result, the flame and toxic gases generated in the gas range 1 are no longer diffused or leaked while the oxygen supply to the outside is blocked by the fire screen 100.

At the same time, the fire extinguishing agent in the main body of the fire extinguisher 60 is disconnected by the disconnection action of the control unit 50 that receives the fire signal of the smoke sensor 40 which detects the smoke or the fire signal of the fuse 30 that detects the flame. It is sprayed through the nozzle unit 20 accordingly. At this time, since the fire extinguishing agent sprayed from the nozzle unit 20 is a state in which the fire screen 100 is already suspended, the fire extinguishing agent sprayed is concentrated only inside the fire screen 100 so that the fire is quickly suppressed and sprayed during the fire. Ambient contamination caused by extinguishing agents can be minimized.

In addition, the heat and toxic gases generated during the fire by the operation of the fire screen 100 does not leak to the outside through the range hood 10 through the open upper portion of the fire screen 100 quickly extinguishes to the outside. Despite this, the secondary damage caused by the remaining heat and toxic gases can be minimized.

<Example 2>

6 and 7 As shown, the present invention is installed in the range hood 10, the gas sensor 80 for detecting the leaking gas generated in the gas range 1, and receives a signal from the gas sensor 80 gas valve A gas circuit breaker 70 for blocking the gas, a fuse block 30 and a smoke sensor 40 installed on the range hood 10 to detect flame and smoke of a countertop, the fuse link 30 and a smoke sensor ( 40 is basically provided with a fire extinguishing device for injecting the fire extinguishing agent of the fire extinguisher 60 to the gas range (1) through the nozzle unit 20 installed on the range hood 10, the above It is installed on both sides of the range hood 10 so that the nozzle unit 20 is located at the center, and is suspended to the gas range 1 side by its own weight in case of fire and the high pressure filled extinguishing agent inside the gas range 1 side. Fire screen 300 to spray and fire The suspension device 400 suspends the fire screen 300 by receiving a signal from the fusible link 30 and the smoke sensor 40 and releasing a locking state with the fire screen 300.

Of these, the rest of the components except for the fire screen 300 and the suspension device 400 are the same as the conventional automatic fire extinguishing device for a gas range will be omitted herein.

As illustrated in FIG. 7, the fire screen 300 is made of a flame retardant material that does not generate toxic gas without being easily attached to a fire as a flat form such as a curtain, and has a lower end gas range 1 below. It is manufactured to be long enough to reach.

A wire 330 connected to the suspension device 400 is fixed to an upper portion of the main body 310 of the fire screen, and a fire extinguishing agent and a gas are filled in a high pressure inside the fire screen 300. The gas is a non-combustible gas, which is a means for imparting injection force to the extinguishing agent by forming the inside of the fire screen 300 at a high pressure, and there is no need to specifically limit the gas component.

On the other hand, as shown in Figure 9a, the extinguishing agent is sprayed from the fire screen 300 in the case of fire through a plurality of injection holes 320 formed in the front of the fire screen 300 toward the gas range (1). The injection hole 320 forms a part of the front surface of the fire screen 300, and is opened by the heat generated in the fire. Therefore, the injection hole 320 is preferably made of a material that is melted or heat damaged at a predetermined temperature or more.

On the other hand, as shown in Figure 9b, the injection hole 320 may be formed to a thickness thinner than the front of the fire screen (300). In this case, the relatively thin injection hole 320 can be opened early while being easily melted or damaged by the heat generated during the fire.

In addition, as shown in Figure 8, the fire screen main body 310 may be divided into a plurality in the horizontal direction may be connected in sequence. In this case, the fire screen 300 is easily bent by the horizontal divider even if some sections are bent during installation and storage, so the fire extinguishing agent filled with high pressure is not damaged.

The fire screen 300 configured as described above has a suspension device 400 through a wire 330 fixed to the top of the fire screen body 310 so that the nozzle unit 20 for injecting the fire extinguishing agent of the fire extinguisher 60 is located at the center. It is installed on the hanging, and when the fire falls down by the operation of the suspension device 400 is suspended to both sides of the gas range (see Fig. 10). This wire 330 is the bottom of the fire screen 300 It is wound up by the winding roller 410 to a sufficient length so as to reach this gas range 1.

The suspension device 400 is composed of a winding roller 410 respectively installed on both sides of the range hood 10, and a solenoid 420 to maintain a locked state so that the winding roller 410 is not rotated.

The wire 330 of the fire screen 300 is wound around the outer circumferential surface of the take-up roller 410, and the solenoid 420 maintains a locked state so that the take-up roller 410 is not rotated, and then the fuse block 30 and Only when the fire signal is transmitted from the smoke sensor 40 is operated to release the state of engagement with the fire screen (300).

In this embodiment, a groove is formed on one side of the take-up roller 410 and a safety pin is inserted into the groove so that a locking state is achieved. The safety pin is connected to the solenoid 420 in operation of the solenoid 420 in a fire. By the safety pin is pulled out by the locking state is configured to be automatically released, but it is not necessarily limited to this, in addition to the locking and release can be made through a variety of methods.

On the other hand, the winding roller 410 is preferably installed adjacent to the center of the range hood 10 so that the lower end of the fire screen 300 is not normally exposed to the lower end of the range hood (10). In this case, separate guide rollers 430 are further installed on both sides of the range hood 10. The guide roller 430 is installed on both sides of the range hood 10 to support the lower portion of the fire screen 300 introduced into the range hood 10 along the winding roller 410. The guide roller 430 guides the fire screen 300 to fall naturally hanging in the event of a fire.

At this time, the fire screen 300 is a vertical section of the gas range 1 side more than the horizontal state section of the winding roller 410 side around the guide roller 430 by adjusting the length of the wire 330 appropriately When the state of the winding roller 410 is released so that the suspended state is long, the suspension is made by its own weight.

The automatic fire extinguishing device for a gas range configured as described above is operated as follows in case of fire.

First, when the fire occurs due to the gas range 1 being ignited, the flame or smoke at this time is first transmitted to the range hood 10 installed directly above, and at the same time, the fuse blink is installed in the range hood 10 ( 30) and the smoke sensor 40 is delivered.

At this time, if the fuse link 30 detects an abnormal temperature of 50 ~ 60 ℃ or more difficult to occur in a normal cooking state, and sends a fire signal to the controller 50. The control unit 50 sends this signal back to the gas circuit breaker 70 to block the gas supplied to the gas range 1.

Nevertheless, if the fire continues to progress, the fire signal is generated by the smoke sensor 40 which shears or detects the smoke by the fuse block 30 overheated by the flame by the controller 50 and the fire signal is The control unit 50 is transferred to the solenoid 420 of the suspension device 400.

As shown in FIG. 10, the solenoid 420 receiving the fire signal is operated to release a state of engagement with the take-up roller 410, and the take-up-roller 410 of which the release is released is the weight of the fire screen 300. It rotates in one direction by. Accordingly, as the wire 330 wound around the winding roller 410 is released, the fire screen 300 falls instantaneously. The fire screen 300 is automatically dropped by its own weight because the vertical state section of the gas range 1 side is longer than the horizontal state section of the take-up roller 410 around the guide roller 430. In turn, the fire screen 300 is suspended to both sides of the gas range (1).

As such, the nozzle hole formed on the front surface of the fire screen 300 in the state where the fire screen 300 is suspended has a surface temperature increased by the heat of the gas range 1 and is melted or damaged by heat as it rises above a predetermined temperature. Is opened. When the injection hole 320 is opened, the fire extinguishing agent is injected into the gas range (1) side of the fire extinguishing agent filled with a high-pressure filled gas inside the fire screen (300).

At the same time, the fire extinguishing agent in the main body of the fire extinguisher 60 is disconnected by the disconnection action of the control unit 50 that receives the fire signal of the smoke sensor 40 that detects the smoke or the fire signal of the fuse blink 30 that detects the flame. It is sprayed through the nozzle unit 20 accordingly.

Therefore, the fire generated in the gas range 1 may be extinguished early by the fire extinguishing agent sprayed simultaneously from the nozzle unit 20 and the fire screen 300.

According to the first embodiment of the automatic fire extinguishing device for a gas range equipped with a fire screen according to the present invention configured as described above, the nozzle unit is installed at the center to automatically spray the extinguishing agent when a fire occurs in the stove of the gas range. By installing a fire screen inside the range hood so as to be positioned, it is suspended to the gas lane immediately before the fire extinguishing agent is sprayed, and it blocks toxic gas and flames from the outside. Extinguishing agent has the effect of preventing the surrounding pollution.

In addition, since the heat and toxic gases generated during the fire do not leak out to the outside through the range hood, the secondary damage due to the remaining heat and toxic gases can be minimized even though the fire is extinguished.

In addition, according to the second embodiment of the present invention, when a fire occurs in the worktop of the gas range, a fire extinguishing agent is applied to the top and both sides of the gas range from a nozzle unit installed at the top of the gas range and a fire screen that is suspended to both sides of the gas range. Simultaneously sprayed, there is an effect that can quickly extinguish the fire.

In addition, since the fire extinguishing range is greatly expanded than in the related art, when the fire occurs as in the prior art, it is possible to prevent a phenomenon in which fire extinguishing can not be achieved for a flame outside the spraying agent spray radius of the nozzle part.

While the invention has been shown and described with respect to specific embodiments thereof, it will be understood that the invention can be variously modified and modified without departing from the spirit or scope of the invention as set forth in the following claims. It should be included in the scope of the invention.

Claims (8)

A gas sensor installed at a range hood to detect a gas leaking from the gas range, a gas breaker to block a gas valve by receiving a signal from the gas sensor, and a fuse installed at the range hood to detect flame and smoke of a worktop In the automatic fire extinguishing device for a gas range having a fire and smoke sensor, and a fire extinguishing device for receiving a fire signal from the fuse and smoke sensor and injecting the fire extinguishing agent of the fire extinguisher into the gas range through a nozzle installed on the range hood, A fire screen that is installed inside the range hood to be positioned at the nozzle portion and suspended to the gas range side in case of fire, and blocks toxic gases and flames from outside; Fire extinguishing screen equipped with a fire screen, characterized in that it comprises a suspension device for suspending the fire screen by releasing the support state with the lower end of the fire screen by receiving a signal from the fuse blown and smoke sensor . The method of claim 1, The fire screen is made of a flame-retardant material that does not easily catch fire as the sealed shape of the upper and lower parts, the upper end is fixed to the range hood and the lower end is attached to the ring is installed in the state rolled up around the ring Automatic fire extinguisher for gas range with fire screen. The method of claim 1, The suspension device is set to receive a signal from the fuse blown and the smoke sensor immediately before the fire extinguishing agent is sprayed, the fire screen is operated first, and then the fire extinguishing device is activated for a gas range, characterized in that the fire screen is equipped with automatic Fire Extinguisher. A gas sensor installed at a range hood to detect a gas leaking from the gas range, a gas breaker to block a gas valve by receiving a signal from the gas sensor, and a fuse installed at the range hood to detect flame and smoke of a worktop In the automatic fire extinguishing device for a gas range having a fire and smoke sensor, and a fire extinguishing device for receiving a fire signal from the fuse and smoke sensor and injecting the fire extinguishing agent of the fire extinguisher into the gas range through a nozzle installed on the range hood, Fire prevention screens are installed on both sides of the inside of the range hood so that the nozzle unit is located at the center, and are suspended to the gas range side by self weight in case of fire and spraying the high pressure-filled extinguishing agent to the gas range side; And a suspension device which suspends the fire screen by receiving a signal from the fuse block and the smoke sensor in case of fire. The method of claim 4, wherein The fire screen is The screen body is made of flame retardant material that is not easily attached to fire and the extinguishing agent is filled with high pressure gas. A plurality of injection holes which are formed on the front surface of the fire screen body and are opened by melting or heat loss due to heat generated in a fire; Automatic fire extinguishing device for a gas stove with a fire screen, characterized in that the wire is fixed to the upper end of the fire screen body and connected to the suspension device. The method of claim 5, The injection hole is a gas stove automatic fire extinguishing device having a fire screen, characterized in that the thickness is formed thinner than the front of the fire screen body. The method according to claim 5 or 6, The fire screen main body is a fire extinguishing screen equipped with a fire screen, characterized in that divided into a plurality in the horizontal direction sequentially connected. The method of claim 1, The suspension device Winding rollers are respectively installed on both sides of the range hood and the wires of the fire screen are wound; And a solenoid operated to release the latched state with the fire screen only when the fire signal is transmitted from the fuse link and the smoke sensor. Automatic fire extinguisher for gas range equipped with a screen.

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