KR20010044493A - Appratus for preventing gas outflow - Google Patents

Abstract

PURPOSE: A gas leakage prevention device is provided to improve the safety with respect to the gas leakage by operating a shutoff valve at a set time if a human being is not sensed and enable the gas shutoff function remotely. CONSTITUTION: A gas leakage prevention device includes an auxiliary shutoff valve mounted on an intermediate path of a gas pipe and mounted with a solenoid valve(8) inside for shutting off gas introduction, a human body sensing part(10) for sensing the existence of a human being, a time setting part(24) for setting a gas shutoff standby time via the auxiliary shutoff valve, a display driving part(22) for driving the solenoid valve in the auxiliary shutoff valve, a data storing part(36) for storing time data of the time setting part and a switching path of the time setting part, and a control part(38) for determining whether a human being is sensed, and counting the time set by the time setting part if a human being is sensed, to output a control signal to the solenoid driving part for shutting off the gas introduction at the set time if a signal "0" is generated in the human body sensing part.

Description

Gas leak prevention device {APPRATUS FOR PREVENTING GAS OUTFLOW}

The present invention relates to a gas leak prevention apparatus, and more particularly, a gas leak prevention apparatus for recognizing a user's outflow situation according to a user's time setting when an intermediate shutoff valve provided near a gas stove is opened. It is about.

As is well known, various gaseous fuels such as liquefied natural gas (LNG) and liquefied propane gas (LPG) have recently been used for heating and food cooking, which are compressed and stored at high pressure in a relatively small reservoir. It is supplied from the gas reservoir through a gas pipe such as city gas or the like.

In addition, since gas fuel is very explosive, there is a high possibility of causing a strong explosion immediately upon exposure to a flame, an electric spark or the like. In recent years, as the number of furniture used increases, accidents caused by gas explosions occur very frequently.

As described above, since the gas fuel has a high risk, an intermediate shutoff valve is provided between the gas pipe and the gas stove, and serves as a secondary gas shutoff even when the gas stove is not used.

However, when using a gas stove, the user may often go out in a state in which the user forgets the use, and when the user goes out while being aware of the current use of the gas, the third person often forgets.

In addition, when an unexpected outage occurs during cooking of food, if the cooking is stopped, the user may not be able to make a desired food.

The present invention has been made in view of the above-described prior art, and when the intermediate shutoff valve provided near the gas stove is opened, the gas valve is automatically shut off by detecting the presence or absence of a human body according to the user's time setting. It is an object of the present invention to provide a gas leakage preventing device for easily shutting off the gas valve by allowing the gas valve to be blocked through the wireless terminal.

1 is a schematic diagram showing an overall gas leak prevention apparatus according to an embodiment of the present invention,

2 is a block diagram showing a circuit configuration of a gas leakage preventing apparatus according to an embodiment of the present invention;

3 is a flow chart showing the signal flow of the gas leakage prevention device according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

2: gas stove, 4: gas pipe,

8: beaudan stage valve, 10: human body detection unit,

22: display unit, 24: time setting unit,

26: dialing signal input section, 28: signal conversion section,

30: A / D conversion section, 32: display driving section,

34: solenoid drive unit, 36: data storage unit,

38: control unit.

In order to achieve the above object, according to a preferred embodiment of the present invention, a gas shutoff device having an intermediate shut-off valve installed in the intermediate path between the gas stove and the gas pipe to control the gas shutoff, in the intermediate path of the gas pipe An auxiliary shutoff valve provided with a solenoid valve therein to block the gas flowing into the gas appliance; A human body detecting unit for detecting the presence or absence of a human body; A time setting unit for setting a gas shutoff waiting time through the auxiliary shutoff valve; A display driver for displaying a time set through the time setting unit; A solenoid driving unit for driving a solenoid provided in the auxiliary shutoff valve; A data storage unit for storing time data and its switching path through the time setting unit; It is determined whether the human body detects the counting of a predetermined time through the time setting unit, and when the detection signal is generated, '0' signal is counted until the arrival of the setting time, and when the setting time arrives, a control signal is generated in the solenoid driving unit to generate gas. Provided is a gas leakage preventing device, characterized in that configured as a control unit for blocking the.

Preferably, the gas leakage prevention device includes a dialing signal input unit connected to a landline telephone and receiving a dialing signal and a tone signal; A gas leakage preventing device is provided, which is configured to further include a signal converting unit for converting a signal applied from the dialing signal input unit to shut off the gas valve at a remote location.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to drawings.

1 is a system diagram generally showing a gas leakage preventing apparatus according to an embodiment of the present invention.

Referring to this, in supplying the gas introduced through the gas pipe 4 connected from the outdoor to the indoor to the gas stove 2 for cooking food, the gas pipe 4 spaced apart from the gas stove 2 by a certain distance. In the middle of), an intermediate shut-off valve 6 is installed.

In the same figure, the lower predetermined portion of the intermediate shut-off valve 6 has an auxiliary shut-off that cuts off the gas according to the user's time setting and the human body's detection and remote operation signals regardless of whether the intermediate shut-off valve 6 is operated. The valve 8 is provided.

In addition, the present invention is provided with a human body sensor 10 for detecting the human body that is a signal source for operating the auxiliary shut-off valve 8, the human body sensor 10 can detect the heat of the human body Use either an infrared sensor or a thermal sensor.

On the other hand, the present invention can operate the opening and closing of the auxiliary shut-off mold 8 by using a wireless terminal 12 located in a remote place, which is a preset tone signal of the wireless terminal 12 through a stored algorithm By signal conversion, the user can perform a desired gas shutoff.

The present invention receives a signal for detecting the presence or absence of the human body through the human body sensor 10 when the time is set for the operation of the auxiliary shut-off valve (8), or the signal conversion through the remote operation via the wireless terminal 12 And a control module 20 for time setting and time display.

The control module 20 is provided with a plurality of time setting buttons 24 for setting the time on the upper surface thereof, and is provided with a display unit 22 for displaying the set time, from the human body sensor 10 An input port for receiving a human body detection signal is configured, and an output port for generating a driving control signal to the auxiliary shutoff valve 8 is provided to signal the human body detection sensor 10 and the auxiliary shutoff valve 8. Connected.

Figure 2 is a block diagram showing the circuit configuration of the gas leakage prevention apparatus according to an embodiment of the present invention.

Referring to this, reference numeral 24 is formed on the upper surface of the control module 20 to represent a time setting unit for setting the time by the user's operation, 26 is connected to a wired telephone line provided in the room dialing signal and tone signal Denotes a dialing signal input unit for receiving a signal, and 28 denotes a signal converting unit for converting an applied signal into a specific pulse signal through the dialing signal input unit 26.

In addition, reference numeral 30 denotes an A / D conversion unit for converting the human detection signal applied through the human body detection unit 10 into a pulse signal of '1' or '0' according to the presence or absence of the human body.

Reference numeral 32 denotes a display driver for displaying the time set by driving the display unit 22, and reference numeral 34 denotes a solenoid driver for driving a solenoid formed in the auxiliary shutoff valve 8.

Also, reference numeral 36 denotes a data storage unit which stores various switching paths in advance according to the pulse type of the input signal and stores an algorithm for converting the signal applied from the wireless terminal 12.

On the other hand, reference numeral 38 receives and stores the shut-off waiting time of the gas valve through the time setting unit 24, while receiving a human body detection signal from the human body detecting unit 10 and the timer 38a therein. When the control unit starts the timing and the set time arrives, the solenoid driving unit is turned on and the control unit outputs the timing state through the display unit 22 by controlling the display driving unit 32.

In addition, the control unit 38 receives a specific tone signal from the dialing signal input unit 26 to generate a switching control signal according to the corresponding signal so that the gas is blocked by the solenoid driver 34.

A switching unit (not shown) is provided inside the control unit 38, and the switching unit is generally composed of a transistor and a relay switch so that a control signal generated from the control unit 38 is applied to the base end of the transistor to switch. do.

With reference to the accompanying drawings, the function and action of the gas leak prevention apparatus according to an embodiment of the present invention of the above configuration will be described in detail.

3 is a flow chart showing a signal flow of the gas leakage prevention device according to another embodiment of the present invention.

First, in the state where the auxiliary shut-off valve 8 is mounted on the pipeline of the gas pipe 4 to block the gas path by driving the solenoid, the standby time of the shut-off through the time setting unit 24 is set. (Step 1: ST1)

At the same time, the set time is output through the display unit 22, and the human body sensor 10 is activated. (Second step: ST2)

The human body detecting sensor 10 determines whether a human body detecting signal is generated (step 3: ST3), and when a human body detecting signal is generated ('1'), the controller 38 has a timer 38a therein. (Step 4: ST4)

On the other hand, if a human body detection signal is not generated ('0'), the user determines that the user is out and starts timing through the timer 38a. (Fifth step: ST5)

At this time, it is determined whether the time counted through the timer 38a matches the preset time set by the time setting unit 24. (S6th step: ST6)

If the preset time and the counting time coincide with each other, the setting time has arrived, and the controller 38 generates a control signal to the solenoid driving part 34 to drive the solenoid of the auxiliary shut-off valve 8. Shut off the valve (Step 7: ST7)

On the other hand, in the case of gas blocking through a remote terminal spaced apart from the remote site, if the dialing and tone signals applied to the landline telephone provided in the room through a wireless exchanger is converted through the signal conversion unit 28, the control unit 38 ) Drives the solenoid driving part 34 to block the auxiliary shutoff valve 8.

On the other hand, the gas leak prevention apparatus according to the embodiment of the present invention is not limited only to the above-described embodiment, various modifications are possible within the scope not departing from the technical gist.

As described above, the gas leakage prevention device according to the present invention is safe and easy to start the timing when the human body is not detected in the state in which the timer is set at the time of use of the gas appliance to shut off the auxiliary shut-off valve when it matches the set time. It is very convenient because it is possible to use a gas appliance, and also to cut off the gas at a remote place through a wireless terminal.

Claims (2)

In the gas shutoff device provided with an intermediate shut-off valve installed in the intermediate path between the gas stove and the gas pipe, An auxiliary shut-off valve provided in an intermediate path of the gas pipe and having a solenoid valve therein to block the gas flowing into the gas appliance; A human body detecting unit for detecting the presence or absence of a human body; A time setting unit for setting a gas shutoff waiting time through the auxiliary shutoff valve; A display driver for displaying a time set through the time setting unit; A solenoid driving unit for driving a solenoid provided in the auxiliary shutoff valve; A data storage unit for storing time data and its switching path through the time setting unit; It is determined whether the human body detects the counting of a predetermined time through the time setting unit, and when the detection signal is generated, a '0' signal is counted until the arrival of the setting time. Gas leakage prevention device, characterized in that consisting of a control unit for blocking the. The method of claim 1, The gas leakage preventing device includes: a dialing signal input unit connected to a landline telephone and receiving a dialing signal and a tone signal; And a signal conversion unit for converting a signal applied from the dialing signal input unit to block the gas valve at a remote location.