KR200196129Y1 - Gas valve auto-safety locking apparatus for preventing gas leakage accident - Google Patents

Abstract

A gas intermediate valve automatic safety lock is disclosed to prevent a gas leakage accident. It detects gas leakage in the space separated from the main device that replaces the conventional manual intermediate valve installed between the end of the gas supply pipe installed in the house, apartment or mall and the connection hose of the gas appliance (gas stove). It has a remote alarm device that transmits to the host device. The claimed value is controlled by the microcomputer and the magnet valve installed between the gas supply pipe and the connection hose, the gas leak detector, the gas flow detector which detects the gas flow in the gas supply pipe, the wireless receiver, the timer, and various alarm means and control buttons. Has The microcomputer of main device recognizes gas leakage through output signal of remote alarm device or its own gas leak detector, reaches the set time by timer, detects gas flow status and shuts off the gas supply by closing the magnet valve. Take appropriate measures such as alarming for gas leaks. According to the present invention, it prevents an accident or a fire caused by a gas leak.

Description

GAS VALVE AUTO-SAFETY LOCKING APPARATUS FOR PREVENTING GAS LEAKAGE ACCIDENT}

The present invention relates to a gas valve automatic safety locking device, and more specifically, to include the intermediate valve of the gas supply pipe connected to the gas range integrally, the intermediate valve is detected by detecting the leakage of gas or the passage of a predetermined use time. The present invention relates to a gas valve automatic safety lock device that automatically shuts off and prevents an accident caused by gas.

Gases as fuels are more convenient to use than other fuels such as briquettes and oils, while the risks of explosive explosions and fires caused by gas leaks can lead to enormous loss of life or property. Therefore, it is almost essential to employ a safety device for preventing accidents caused by gas leakage in the place where gas is handled.

In order to prevent a gas leak, the first step is to detect whether the gas is leaking. Then, if a gas leak is detected, the gas supply is blocked and the leaked gas is dispersed or discharged to prevent further leakage. Various measures are needed to avoid the explosion. In theory, gas detection (or exhaust) would not be necessary if detection and blocking were complete. Therefore, the present invention focuses on a solution that can collectively solve the detection of gas accident factors and automatic shutoff of gas supply.

According to the conventionally known technology, only an alarm function when gas leak is provided, a gas leak breaker is separately installed, and only a gas leak is blocked, or a gas leak detector and a breaker perform an operation separately. Such devices require human actions to shut off the gas supply, so they are not effective when people are absent, and the problem is that the operation cannot be completely blocked because the blocking operation is difficult to perform immediately from the reception of the alarm. Not practical

Unlike the above method, a technique for making a conventional intermediate valve in conjunction with various sensors has also been disclosed. Representatively, when the gas sensor or the temperature sensor detects a gas leak or overheat by interlocking with the gas sensor and the temperature sensor, it operates a vehicle shut-off device that opens and closes the intermediate valve to control the intermediate valve. However, this method adopts a method of adding the above-mentioned shut-off device while adopting a manual operation intermediate valve installed on a gas supply line by an existing gas supplier, thus making the configuration more complicated and aesthetically negative. There was a disadvantage to the effect.

By law, a home or business that uses gas is provided with an intermediate valve for opening and closing the supply of gas to a gas appliance such as a gas range. The intermediate valve is a safety device with a double locking function with a locking device installed at the gas appliance at the end. However, the opening and closing of the intermediate valve depends on the manual operation according to the judgment of the user, there are various inconveniences in life and may also cause gas accidents. Housewives have a psychological burden on whether to close the intermediate valve for safety and to go out after closing the gas appliance. Inadvertent use of the cooker for extended periods of time may cause fire due to overheating.

On the other hand, the place where the leakage of gas is expected may vary depending on the environment of the gas equipment or place of use. For example, in an apartment or a house, a gas range is installed in a kitchen, and a gas supply pipe is usually connected to the kitchen through an independent space different from the kitchen such as a boiler room or a utility room. In this case, the gas atmosphere may be formed not only in the kitchen but also in an independent space such as a boiler room or a multipurpose room. Conventionally, a sensor has been employed to detect a gas atmosphere in an independent space, but since the detection signal is transmitted by wire, there are inconveniences in construction and aesthetic problems due to wiring work.

In consideration of these points, the present invention can replace the existing manual intermediate valve and can fundamentally block the gas leakage accident by automatically shutting off and alarming the gas supply pipe by the passage of a set operating time or by detecting the gas atmosphere. It is an object of the present invention to provide an automatic safety lock for a gas intermediate valve.

The present invention also provides a wireless connection between a local gas sensor for detecting a gas atmosphere and a control circuit capable of automatically controlling an intermediate valve, thereby simplifying installation and cleaning the inside of an installation space such as a kitchen. Another object is to provide a gas intermediate valve automatic safety lock that can also serve as an article.

1 shows an internal and external configuration of a main device of a gas valve automatic safety locking device according to the present invention.

Figure 2 shows the internal and external configuration of the remote alarm device according to the present invention.

FIG. 3 is a block diagram showing the configuration of an electric circuit of the main device of the gas valve automatic safety locking device shown in FIG.

4 is a block diagram showing the configuration of an electrical circuit of the remote alarm device shown in FIG.

5A and 5B show an example in which the remote alarm apparatus is actually installed.

FIG. 6A is an installation view in which a claimed value of a gas valve automatic safety locking device is combined with a gas pipe, and FIG. 6B is a sectional view taken along the cutting line A-A 'in FIG. 6A, and FIG. 6C is an enlarged view of symbol 600 of FIG. 6B. .

7 shows an actual installation example of a gas valve automatic safety locking device according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10: gas supply pipe 12: gas stove hose

14: Magnet valve 16: manual open lever

18: gas flow sensor 20, 48: vent holes

30: antenna 42: power transformer

100: main device of the gas valve automatic safety lock

310: microcomputer 312: power supply

314, 414: gas leak detection signal amplification unit 316: gas flow detection signal amplification unit

318: remote gas leak detector receiver 200: remote alarm device

300: electric circuit of the main device of the gas valve automatic safety lock

400: electric circuit of a remote alarm device

410: remote alarm transmitter 416: buzzer intermittent signal amplification unit

In order to achieve the above object, the present invention provides a gas intermediate valve automatic safety locking device composed of a main device and a remote alarm device.

The claim value may include: a gas intermediate valve connected between a connection hose connected to a gas appliance such as a gas range and a gas supply pipe and operated by a valve driving power source to control the gas supply to the gas appliance by opening and closing the gas supply line; A gas flow detector installed inside the gas supply pipe and outputting a gas flow signal corresponding to the flow of the gas; A first amplifier for amplifying the gas flow signal; A first gas leak detector installed near the gas intermediate valve and detecting a gas leak from the gas intermediate valve and outputting a first gas detection signal; A second amplifier amplifying and outputting the first gas detection signal; A timer for setting a duration of the open state of the gas intermediate valve and generating a time elapsed signal when the set time elapses; Receiving unit for receiving the gas detection radio signal and demodulate through the confirmation of the consistency of the transmission frequency identification code; And when the gas detection radio signal is input or when the state in which the gas flow signal is not continuously output from the gas flow sensor for more than a predetermined time or when it is recognized that the time elapsed signal is generated from the timer, Or a microcomputer for controlling the gas intermediate valve to be closed by providing the valve driving power to the gas intermediate valve when the gas detection radio signal is received. The claim further includes a manual opening and closing lever that can open and close the gas intermediate valve manually from the outside. Preferably, the gas intermediate valve comprises a magnet valve operated by a magnetic force generated by the valve driving power source. The claim further includes a case in which a gas intermediate valve and a microcomputer, including a circuit board on which the various electric circuits are mounted, are equipped with various operation buttons. On / off operation button for instructing the microcomputer to open or close the gas intermediate valve by button operation on the outer surface of the case, a timer setting lamp indicating the time set by the timer, gas leakage is detected. It is further provided with a gas leakage alarm lamp, a digital clock, etc. to notify of this.

The remote alarm device may include: a second gas leak detector installed in a region where a gas leak is expected and generating an electrical second gas detection signal by recognizing a gas leak when the amount of gas contained in the surrounding air exceeds a threshold; A signal amplifier for amplifying the second gas detection signal provided from the second gas leak detector; A code setting switch for setting the transmission frequency identification code; And a transmitter for modulating the identification code together with the amplified second gas detection signal in a predetermined manner and transmitting the modulated wireless gas detection signal through an antenna. The remote alarm device includes an alarm buzzer for alarming gas leakage by an applied driving power source so as to have its own alarm function; And a buzzer driver for intermittently providing the driving power to the buzzer in response to the input of the amplified gas detection signal.

Other features and advantages of the present invention will become more apparent with reference to the following detailed description and accompanying drawings that illustrate the features of various embodiments of the invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 1 shows the internal and external configuration of the main device 100 of the automatic automatic gas valve locking device according to the present invention. The present invention proposes a new type of intermediate valve replacing the conventional manual operated intermediate valve. This intermediate valve is a magnet valve 14 which is operated by a magnetic force generated by a drive power source. For example, a magnet valve 14 is provided at a position where a conventional manually operated intermediate valve is installed between an end portion of a gas supply pipe 10 that is piped to an apartment, a house, or a building, and a hose 12 connected to a gas appliance such as a gas range. ) Is installed instead. The magnet valve 14 is provided with a manual open / close lever 16 that can be opened and closed manually from the outside. The manual opening and closing lever 16 is prepared for manual operation in case of a power failure, so that the magnet valve 14 can be manually opened or closed even during a power failure. The magnet valve 14 is composed of a valve body portion 14a and coupling pipes 14b and 14c integrally connected to both sides thereof. The upper coupling pipe 14b is connected to be completely closed with the gas supply pipe 10 by a coupling bolt 14d, and the lower coupling pipe 14c is connected to be completely closed with the hose 12 by the clamp 14e. do.

In order to detect whether the gas appliance is currently using gas, a gas flow detector 18 is installed inside the gas supply pipe 10 to detect the gas flow.

Since the leakage of gas mainly occurs in the pipe joint portion, in consideration of this, the gas leak detector 52 is installed near the intermediate valve 14. The gas leak detector 52 generates a gas detection signal by recognizing a gas leak when the amount of gas leaked into the surrounding air exceeds a threshold.

The connection portion of the gas intermediate valve 14 between the gas supply pipe 10 and the hose 12 is covered invisibly from the outside by the case 54. Therefore, when viewed from the outside (see FIG. 6A), the gas intermediate valve 14 is not visible outside the case 54 and the gas supply pipe 10 and the hose 12 are connected with the case 54 in the middle. Coupling holes 46a and 46b are provided at both sides of the case 54 so as to be fixed to the wall by screws.

In the case, vent holes 20 and 48 are formed at upper and side surfaces of the connection portion of the gas intermediate valve 14, and the speaker 50 is also positioned near the lower end to emit an alarm sound due to gas leakage. In addition, a gap (not shown) is provided on the side wall to allow the manual opening and closing lever 16 to move up and down.

In addition to the gas intermediate valve 14, the case 54 also accommodates a printed circuit board 32 on which the electric circuit 300 of the main apparatus 100 is mounted. 3 is a block diagram showing the configuration of the electrical circuit of the main device 100. As shown in FIG. The electric circuit 300 of the main device 100 has an input such as a gas leak detection signal amplifying unit 314, a gas flow detection signal amplifying unit 316, and a remote gas leak detector receiving unit 318 around the microcomputer control unit 310. Signal sources are combined, and a microcomputer control unit 310 and a power supply unit 312 for supplying the power required for each of these input signal sources is combined. In addition, the microcomputer control unit 310 has an open button 38 for instructing the gas intermediate valve 14 to open, a release button 40 for instructing the release of the alarm state, a timer setting button for setting the timer time ( It is also connected to 36).

The power supply unit 312 receives an AC voltage from the secondary side of the transformer 42 and converts it into a DC voltage and provides the same to the microcomputer control unit 310 connected to the output terminal. The transformer 42 receives a commercial AC voltage through the power plug 56 and is embedded in the case 54.

The gas leak detection signal amplifying unit 314 and the gas flow detection signal amplifying unit 316 amplify the gas leak detection signal and the gas flow detection signal respectively output from the gas leak detection unit 52 and provide them to the microcomputer control unit 310. .

The remote gas leakage detector receiver 318 includes a reception antenna 30 and a reception frequency identification number setting switch 320, and receives a gas detection radio signal transmitted from the remote alarm device 300 to match the transmission frequency identification code. After demodulation, the demodulation is provided to the microcomputer control unit 310.

On the other hand, the microcomputer control unit 310 has a digital clock 26, an alarm lamp 22 for alarming when a gas leak is detected, a locking lamp 24 indicating a locked state of the intermediate valve, and an in-use LED 28 indicating that the gas is in use. ), Control targets such as a timer LED 34 indicating a timer setting time by the timer setting button 36, a speaker 50, a magnet valve 14, a DC voltage output terminal 44, and the like are electrically connected to each other. The timer setting time is set to '60 minutes' as the default value, and optionally '2 hours' or' 4 hours' can be set. However, such a timer setting time may be changed by changing a program embedded in the microcomputer control unit 310.

Digital clock 26, alarm lamp 22, locking lamp 24, in use LED 28, timer LED 34, timer setting button 36, open button 38, release button 40 and the like It is provided in the outer surface of the case 54.

Figure 2 shows the internal and external configuration of the remote alarm device according to the present invention. The remote alarm device 200 includes a circular case 90 having an attachment surface 60 on which a coupling hole 62 is formed and fixed to a ceiling, a wall, or a pipe, and having a vent hole 82. In the 90, the printed circuit board 72, the buzzer 64, the transmitting antenna 74, and the power supply transformer 84, on which the related electric circuits are mounted, are built. On the outer surface of the circular case 90, a test button 66, an alarm release button 68, a gas sense opening 70, a gas suction opening 78, an alarm lamp 80 and the like are provided.

5A and 5B show an example in which the remote alarm device 200 is actually installed. The remote alarm device 200 may be fixed to the pipe 84 by the clamp 82, or may be fixed to the ceiling 86 using a screw.

4 is a block diagram showing the configuration of an electric circuit of the remote alarm device 200. The remote alarm device 200 is installed in a region where a gas leak is expected and the gas detector 70 recognizes a gas leak and generates an electric gas detection signal when the amount of gas contained in the surrounding air exceeds a threshold, and the gas. The gas leakage detection signal amplifier 414 is configured to amplify the gas detection signal generated by the detector 70. The amplification unit 414 is connected to the test button 66 for testing the normal operation of the remote alarm device 200 and the alarm release button 68 for releasing it in the state where the alarm is generated.

The output signal of the gas leak detection signal amplifier 414 is input to the remote alarm transmitter 410, the buzzer driver 416, and the alarm lamp 80, respectively. The buzzer driver 416 receives the amplified gas detection signal provided from the gas leak detection signal amplifying unit 414 and amplifies it to generate driving power for driving the buzzer 64 intermittently, and the buzzer 64 is It is driven by an applied driving power source and emits an alarm sound to alert gas leakage.

When the gas detection signal is input, the remote alarm transmitter 410 also modulates the signal with a transmission frequency identification number set by the switch 418 in a predetermined manner and wirelessly transmits the signal through the transmission antenna 74.

The driving power required for the operation of the remote alarm device is a transformer 84 for converting a commercial AC voltage transmitted through a power plug 86 to an appropriate level, and the secondary voltage of the transformer 84 is converted into a DC voltage. It is obtained by the power supply unit 412. The output voltage of the power supply unit 412 is provided to the transmitter 410 and the amplifier 70.

6A shows a state in which the main device 100 of the gas valve automatic safety locking device is installed between the gas supply pipe 10 and the hose 12. As can be seen in the figure, the main device 100 according to the present invention is excellent in aesthetics because only the case 54 is observed from the outside. FIG. 6B is a cross-sectional view taken along the line AA ′ of FIG. 6A, and FIG. 6C is an enlarged view of symbol 600 of FIG. 6B. Since the distance A of the gas supply pipe 10 away from the wall surface is not constant, the upper and lower ends of the cover 96 of the gas intermediate valve 14 are incised (B) so that the gas supply pipe 10 is separated from the wall surface. Take a structure that can respond flexibly to differences.

7 shows an actual installation example of a gas valve automatic safety locking device according to the present invention. The drawing shows an example in which the main device 100 is installed near the stove of the kitchen and the remote alarm device 200 is installed in the boiler room. Although not shown here, the gas supply pipe 10 is coupled to the main device 100 through the boiler room, and a hose (not shown) connects the main device 100 and the gas stove.

Hereinafter will be described the operation of the gas valve automatic safety locking device according to the present invention.

When the AC power is supplied through the power plug 56, the microcomputer control unit 310 initializes the main device 100. The contents of the initialization are as follows.

(1) The magnet valve 14 is in a closed state.

(2) The locking lamp 24 is turned on.

(3) The digital clock 26 lights up.

(4) The gas leak detector 52 is set to a sensing standby state.

(5) The timer is set at 60 minutes so that the timer LED 34 is displayed at 60 minutes.

(6) Wait for reception of the transmission of the remote alarm apparatus 200.

When the gas appliance user presses the open button 38 after the initialization, the microcomputer control unit 310 recognizes this and supplies driving power to open the magnet valve 14. In addition, the microcomputer control unit 310 cuts off the power supply of the locking lamp 24. The microcomputer monitors the output signal of the gas flow detector 18 while counting the time from this point.

If the gas appliance (gas stove) is not used for a predetermined time (for example, 15 minutes) after pressing the open button 38, that is, if the gas flow detector 18 does not output the detection signal, the above initialization is executed again. As a result, even when the main part goes out without closing the intermediate valve, the gas intermediate valve 14 is automatically closed. This function is one of the important functions of the present invention, the gas intermediate valve 14 is always closed when the gas stove is not used is a function to fundamentally block the gas leakage.

On the other hand, after opening the gas intermediate valve 14 by pressing the open button 38, and using a gas stove, the gas flow detector 18 detects the gas flow in the gas supply pipe 10 to generate a detection signal. The microcomputer control unit 310 recognizes that there is a gas flow by monitoring the output terminal of the amplifying unit 316 and supplies power to the LED 28 in use. When the continuous use time of the gas reaches 60 minutes, the microcomputer control unit 310 automatically resets the magnet valve 14 again. This function is also one of the important functions of the present invention, even when you go out with the stove turned on due to carelessness, the timer operates to automatically close the magnet valve 14 when the set time is reached. It helps to avoid the occurrence of fire.

In order to use the stove for a long time, the user may set the timer setting time to 2 hours or 4 hours using the timer button 36 before or after initialization. When the timer is set for such a long time, initialization is executed when the set time is reached. After the initialization is made, even if the user does not operate a separate timer setting button 36, it is automatically set to 60 minutes.

On the other hand, if there is a gas leak near the connection portion of the magnet valve 14 and the gas stove, the gas leak detector 52 detects this and outputs the amplified gas leak detection signal through the amplifier 314. The microcomputer control unit 310 monitors the output terminal of the amplifying unit 314 to control the magnet valve 14 to immediately close when the gas leakage detection signal is detected to block further gas leakage. At the same time, the microcomputer control unit 310 turns on the locking lamp 24 and rings the gas leakage alarm through the speaker 50, and controls the alarm lamp 22 to flash to confirm that the gas leakage is in progress. Make sure At this time, the gas leakage alarm sounds only while detecting the gas leakage, and the alarm lamp 22 to flash until the release button is pressed. All other functions stop. Even if a user leaks gas when they go out, the alarm lamp 22 keeps blinking until the user presses the release button 40 to easily check that there is a gas leak when the user returns from the outside.

In addition to processing the gas leakage state, when the user presses the release button 40, the microcomputer control unit 310 recognizes this and returns to the initial state.

On the other hand, the gas leak may also be detected by the remote alarm device 200 installed in the boiler room. When detecting the gas atmosphere in the space where the gas leak detector 70 of the remote alarm device 200 is installed, a detection signal is generated, and the amplification unit 414 amplifies the gas leakage detection signal to the remote alarm transmitter 410 and the buzzer. The driver (buzzer interrupted signal amplifier) 416 and the alarm LED 80 are provided. As a result, the buzzer driver 416 supplies driving power only while gas leakage is detected to ring the buzzer 64 to alert the gas leakage. In addition, the alarm LED 80 blinks until the alarm release button 68 is pressed.

At the same time, the remote alarm transmitter 410 carries on the gas leakage detection signal together with the identification number set by the transmission frequency identification number (ID code) setting switch 418, modulates the modulation signal, and transmits the modulated gas detection radio signal to the transmission antenna 74. Wireless transmission through.

The main device 100 receives the gas detection radio signal through the antenna 30 of the receiving unit 318 and demodulates it to check whether the identification code is set by the code setting switch 320. If the identification code is matched, the microcomputer control unit 310 recognizes this as a gas leakage detection state and performs a control operation as in the case of gas leakage detection by the gas leakage detector 52. That is, the alarm 50 sounds the alarm, the alarm lamp 22 flashes, and the magnet valve 14 is immediately closed.

Pressing the release button 40 of the main device 100 again the main device 100 is initialized.

According to the present invention as described above can obtain the following effects.

First, the conventional manual intermediate valve can be obtained in a variety of convenience by replacing the main device set having a magnetic valve of the automatic safety lock function of the present invention. In other words, it is possible to reduce the burden of closing the intermediate valve at all times after using the gas stove, etc., and eliminates the burden of housewives by eliminating the worry about opening or closing the intermediate valve when going out.

In addition, the present invention automatically sets the upper limit of the continuous use time of the gas appliance, and when this time is reached, the intermediate valve is automatically closed, so if the food is heated for a long time due to user's carelessness, Prevent the occurrence of fire.

The alleged value also has its own gas leak detection function, which detects gas leaks in the kitchen and automatically shuts off the intermediate valve to prevent explosions caused by gas leaks.

By remotely monitoring the gas leaked from a place other than the kitchen by using a remote alarm device, not only can alarm from the remote alarm device itself, but also can be transmitted to the main device to check gas leakage in the living room and prevent accidents. In particular, since the main device 100 and the remote alarm device 200 transmits and receives signals wirelessly, the inconvenience of having to install and install by wire. In addition, it is possible to easily check whether the magnet valve is opened or closed at a long distance by displaying the locking lamp 24 large.

The magnet valve 14 is detachable from the inside of the main device, as well as easy installation and can be designed with a beautiful appearance can clean the inside of the kitchen can also serve as kitchen appliances.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and modified within the scope of the invention without departing from the spirit and scope of the present invention described in the utility model registration claims below It will be appreciated that it can be changed. For example, the present invention discloses a simple example of a straight road, but it is found that it can be easily applied based on the present invention to an intersection or other road conditions.

Claims (14)

A gas intermediate valve integrally coupled to a gas supply pipe and operated by a valve driving power source to control the gas supply by opening and closing the pipe of the gas supply pipe; Gas detecting means for recognizing a gas leak and generating a gas detection signal when the amount of gas leaked into the surrounding air exceeds a threshold; And And a microcomputer electrically connected to the gas intermediate valve and the gas detecting means, and supplying the valve driving power to the gas intermediate valve to control the gas intermediate valve to close when the gas detection signal is generated. Gas intermediate valve automatic safety lock device, characterized in that. The gas intermediate valve automatic safety lock device according to claim 1, wherein the gas intermediate valve is closely connected to a connection hose connected to a gas using device such as a gas range. The gas intermediate valve automatic safety lock device according to claim 1 or 2, further comprising a manual opening / closing lever capable of manually opening and closing the gas intermediate valve from the outside. The method according to claim 1 or 2, wherein the gas detection radio signal is transmitted together with a transmission frequency identification code by recognizing that the gas is leaked when the amount of gas contained in the surrounding air exceeds a threshold. Remote gas detection means for modulating and transmitting to; And Receiving means for receiving the gas detection radio signal and demodulates through confirmation of the consistency of the transmission frequency identification code, And said microcomputer provides said valve driving power for closing said gas intermediate valve to said gas intermediate valve when said reception of said gas detection radio signal is recognized through said receiving means. The gas intermediate valve automatic safety lock device according to claim 1 or 2, wherein the gas intermediate valve is a magnet valve operated by a magnetic force generated by the valve driving power source. According to claim 1 or 2, further provided with a gas flow sensor for detecting whether there is a flow of gas in the gas supply pipe is installed inside the gas supply pipe, The microcomputer monitors the output signal of the gas flow sensor to provide the valve driving power to control the gas intermediate valve to close when the gas flow in the gas supply pipe is not detected continuously for more than a predetermined time. Gas intermediate valve automatic safety lock. The gas supply pipe of claim 6, further comprising a display means for informing that there is a flow of gas in the gas supply pipe, wherein the microcomputer monitors an output signal of the gas flow sensor to supply gas when there is a flow of gas. Gas intermediate valve automatic safety locking device, characterized in that for controlling to operate the display means. The gas supply valve of claim 1 or 2, further comprising a case for accommodating the gas intermediate valve and the microcomputer-mounted circuit board integrally coupled to the gas supply pipe. Gas intermediate valve automatic safety lock. 10. The apparatus of claim 8, further comprising an on / off operation button provided on an outer surface of the case and configured to deliver an instruction to open or close the gas intermediate valve to the microcomputer by a button operation. Gas intermediate valve automatic safety lock. 3. The apparatus of claim 1 or 2, further comprising a timer that sets a time for continuously opening the gas intermediate valve and generates a timeout signal when the set time elapses, wherein the microcomputer stops the timeout from the timer. When the generation of the signal is recognized, the gas intermediate valve automatic safety lock device, characterized in that for controlling the gas intermediate valve is closed by providing the valve driving power to the gas intermediate valve. delete delete delete delete