KR20110002409A - Gas valve apparatus and the method thereof - Google Patents

Abstract

PURPOSE: A gas valve apparatus and a control method thereof are provided to prevent a fire by more precisely measuring a gas leakage. CONSTITUTION: A gas valve apparatus comprises a gas valve(172), a gas flow sensor(124), a gas leakage sensor(126), a control unit(110), and an operating unit(170). The gas valve is installed on a gas supply path in order to open and shut the gas supply to a gas appliance. The gas flow sensor measures the volume of gas provided to the gas appliance through a hose. The control unit controls the operating unit to shut off the gas valve when the gas volume sensed by the gas flow sensor is over 100% of the hose capacity a gas leakage is detected by the gas leakage sensor.

Description

Intermediate gas valve device and its control method {GAS VALVE APPARATUS AND THE METHOD THEREOF}

The present invention relates to an intermediate valve for controlling a gas supply path supplied to a gas machine, and in particular, a gas flow rate sensing unit, a gas leak detection unit, an operation unit and a control unit for controlling the intermediate gas valve device. The present invention relates to an intermediate gas valve device and a control method thereof capable of precisely detecting leaks, correcting pressure error due to seasonal temperature, and adjusting setting conditions for each manufacturer.

Gas appliances (eg, gas ranges, gas ovens, gas boilers, etc.) used in homes or restaurants are made from gases such as LPG and LNG, and are connected to the gas tanks of outdoor gas tanks and city gas corporations by piping. The intermediate valve is installed between the gas equipment and the outdoor gas tank or between the gas equipment and the gas tank of the city gas corporation so that the user can control the supply or blocking of the gas.

Such intermediate valves are generally mechanically operated and operate in conjunction with the ignition switch of the gas range.

However, the operation of the intermediate valve may provide convenience for use by automatically opening and closing the gas supplied from the outside in conjunction with the gas range, but correction according to minute differences such as weak gas leakage or pressure error due to seasonal temperature This is not done, causing inconvenience in use.

That is, in the region where the temperature change is severe throughout the year, the consumption pattern of the gas is greatly influenced by the external temperature, so that the change in the gas pressure is very large, and thus an error occurs in the output of the measured value even if there is no change in the gas flow rate.

In addition, there is a problem that the operation of the gas equipment is not clear because the setting criteria for each manufacturer is different. In other words, despite the difference in volume and pressure of gas used by gas equipment companies, it is inconvenient to use a uniform standard value, and it is not easy for ordinary users to correct the error.

Accordingly, it is a first object of the present invention to provide an intermediate gas valve device and a control method thereof capable of more precisely controlling gas leakage in order to solve this problem.

Another object of the present invention is to provide an intermediate gas valve device and a control method thereof, which can be conveniently used by correcting a pressure change value according to an external temperature when using a gas device.

In addition, another object of the present invention is to provide an intermediate gas valve device and a control method thereof capable of separately managing setting standards for each manufacturer.

Another object of the present invention is to provide an intermediate gas valve device and a control method thereof employing various additional functions such as earthquake detection and fire detection.

In addition, the present invention not only reduces the user's hassle to open and close the ignition device and the gas valve 172 every time the gas appliance is used, and also detects the leaked gas to prevent the risk of fire in advance. A fifth object is to provide a gas valve device and a control method thereof.

An intermediate gas valve device installed on the gas supply path of the present invention for controlling the opening and closing of the gas supplied to the gas device is formed in the gas path around the valve and measures the volume of gas supplied to the gas device. A gas flow rate detection unit for outputting a gas, a gas leak detection means for detecting a gas leak, and 100% of the volume of the gas supply path from the gas flow rate detection unit within a predetermined time when detecting a gas leak from the gas leak detection means. It is achieved by including a control unit for outputting a control signal and an alarm signal for blocking the operation unit for opening and closing the valve in accordance with the control signal.

The control unit outputs a control signal to shut off the gas valve 172 when 100% of the hose volume is leaked from the gas flow rate detecting unit more than 10 times within a predetermined time when gas leakage is detected from the gas leakage detecting means and an alarm. Output the signal.

In the present invention, the gas valve 172 corresponds to an existing intermediate valve, and refers to a valve having a gas amount adjusting handle 134 attached to open or close a gas flow automatically or manually.

Gas valve device is installed on the gas supply path of the present invention for achieving this purpose to control the opening and closing of the gas supplied to the gas device, is formed in the gas path around the valve to detect the pressure and output the gas pressure The gas pressure sensing unit measures and stores the maximum pressure detected by the gas pressure detecting unit in a state in which the valve is closed, and automatically receives the pressure signal sensed by the gas pressure sensing unit every predetermined period, and updates and stores the measured maximum pressure. It is achieved by including a control unit for outputting a control signal for normally operating the opening and closing of the valve by correcting the maximum pressure according to the season and an operation unit for opening and closing the valve in accordance with the control signal.

The control unit controls the gas pressure control unit to measure the maximum pressure every 15 days after the initial maximum pressure storage, and if the measured value is a pressure within 5% of the stored maximum pressure, the stored maximum pressure is updated and stored when 5% is exceeded. And outputting a control signal to the operation unit to shut off the valve.

In addition, a gas valve device installed on a gas supply path of a gas machine and a gas pressure sensor for achieving the above object, is formed in the gas path around the valve and the gas pressure to detect and output the maximum pressure and the minimum pressure The control unit receives the pressure signal sensed by the gas pressure detector and stores it in the memory unit, and determines that it is in normal use when the minimum pressure and the maximum pressure range are 30% to 70%, and controls the valve to normally open and close. It can be achieved by including a control unit for outputting and an operating unit for opening and closing the valve in accordance with the control signal.

The maximum pressure and the minimum pressure are characterized in that by measuring the maximum or minimum of the crater of the gas machine.

In addition, the present invention is a gas valve device which is installed on the gas supply path to control the opening and closing of the gas supplied to the gas machine, is formed in the gas path around the valve and automatically pressure every predetermined period in accordance with the gas condensation state change Gas pressure sensing unit for sensing and outputting the pressure signal detected by the gas pressure sensing unit and stored in the memory unit and judges the normal use when using 30% to 70% of the minimum and maximum pressure range of the valve The above-described object can be achieved by including a control unit for outputting a control signal for normally operating the opening and closing and an operation unit for opening and closing the valve according to the control signal.

The controller may be configured to further include a message transmission unit capable of transmitting a text message so that the controller controls the gas device to transmit a text message of long-term unused to a designated telephone number when not used for a predetermined period.

And an earthquake detection means connected to exchange the signal with the control unit, and when the vibration is detected by the earthquake detection means more than a preset reference value, the control unit outputs a control signal to shut off the gas valve. It is more preferable to output the alarm signal at the same time.

The apparatus may further include a temperature detector configured to exchange signals with the controller and detect a temperature around the controller, wherein the controller is configured to shut off the gas valve when the temperature detected by the temperature detector is greater than or equal to a preset reference temperature. It can be configured to output the control signal and the alarm signal at the same time.

The controller outputs a control signal for shutting off the gas valve and outputs an alarm signal when the temperature sensing unit has a temperature of 70 ° C. or higher or rapidly rises to 50 ° C. within a predetermined time.

On the other hand, the control method of the gas valve device provided on the gas supply path of the gas device of the present invention and the gas pressure sensor for achieving this object, (a) is formed in the gas path around the valve to the gas device Measuring and outputting the volume of gas supplied; (b) detecting whether the gas leaked; and (c) detecting the gas leak in step (b) within 100% of the volume of gas in step (a) within a predetermined time. Outputting a control signal and an alarm signal to shut off the valve upon leakage and (d) blocking the valve according to the control signal.

In the step (c), when the gas leak is detected in the step (b), when the gas volume in the step (a) is 100% leaked more than 10 times, the control signal for shutting off the valve is output and an alarm is generated. It is convenient to have a signal output.

In addition, the control method of the gas valve device provided on the gas supply path of the gas machine and having a gas pressure sensor, (a) detecting and outputting the pressure in the gas pressure sensing unit formed in the gas path around the valve, (b) Measure and store the maximum pressure detected by the gas pressure sensing unit in the state of closing the valve, and automatically receive the pressure signal detected by the gas pressure sensing unit every predetermined period, and update and store it in comparison with the stored maximum pressure. By correcting the maximum pressure according to the season to output a control signal for operating the normal opening and closing of the valve, (c) may be made including the step of blocking the opening and closing of the valve in accordance with the control signal.

The step (b) is b-1) measuring the maximum pressure every 15 days after the initial maximum pressure storage and b-2) if the maximum pressure measured in the step is less than 5% of the stored maximum pressure is stored It is preferable to update and store the maximum pressure and to output a control signal to the operating unit to shut off the valve when 5% is exceeded.

In addition, the control method of the gas valve device provided on the gas supply path of the gas machine and the gas pressure sensor for achieving this purpose, (a) is formed in the gas path around the valve in accordance with the gas condensation state changes Automatically detecting and outputting a pressure every predetermined period, (b) Receiving the pressure signal in step (a) and storing it in the memory unit, and judges normal use when using 30% to 70% of the minimum and maximum pressure ranges. And outputting a control signal for normally operating the opening and closing of the valve, and (c) blocking the opening and closing of the valve according to the control signal.

A control method of a gas valve device installed on a gas supply path of another gas device and having a gas pressure sensor includes: (a) detecting and outputting a maximum pressure and a minimum pressure in a gas path around the valve; (b) a control signal for receiving the pressure signal sensed in the step (a) and storing it in the memory unit and determining that it is in normal use when the minimum pressure and the maximum pressure range are used in the range of 30% to 70%, and normally opening and closing the valve. Outputting and (c) blocking the valve in accordance with the control signal can be configured.

The maximum pressure and the minimum pressure in the step (a) is characterized by measuring the crater of the gas equipment to the maximum or minimum, and the step b) is the long-term unused to the designated phone number when the gas appliance is not used for a predetermined period of time. Preferably, the method further includes controlling to transmit the text message.

The step b) may further include outputting a control signal for shutting off the valve and outputting an alarm signal when a vibration equal to or greater than a preset reference value is detected, wherein the temperature detected by the temperature sensing unit is preset. It is more preferable to further include outputting an alarm signal and outputting a control signal for shutting off the gas valve when the reference temperature is higher than the set reference temperature.

At this time, when the temperature of the temperature sensing unit is 70 ℃ or more or rapidly rises to 50 ℃ within a predetermined time can output a control signal to shut off the gas valve and at the same time output the alarm signal.

In addition, the intermediate gas valve device of the present invention for achieving the above object is a determination unit for determining whether or not the ignition of the gas appliance, to determine whether the gas valve installed in the gas supply path of the gas appliance opening / closing and controlling the opening and closing For the operation unit, a gas leak detection unit for detecting a gas leak, installed in the path between the gas device and the gas valve, a gas flow rate detection unit for measuring the flow rate of the gas flowing into the gas device and the determination unit If it is determined that the gas device is not ignited by the operating unit and the gas valve is opened by the operating unit, when the flow rate of the gas flowing into the gas unit is measured by the gas flow rate sensing unit, the operating unit is controlled. To shut off the gas valve and detect a gas leak from the gas leak detection unit within a predetermined time. When the gas flow rate detected from the 100% leakage of the gas supply path yongjeokryang unit may be configured by a control unit for outputting a control signal and an alarm signal to block the gas valve.

The gas valve further comprises a memory unit for storing the volume amount on the gas path between the gas equipment, and the control unit compares the volume of the gas flow rate stored in the memory unit with the volume of the gas flow rate measured from the gas flow rate detection unit It is desirable to measure the amount of leakage.

The control unit outputs a signal for controlling the opening of the gas valve when the gas device is determined to be ignited by the determination unit and the gas valve is shut off by the operation unit, and the gas leak detection unit It is preferable to output a control signal to shut off the gas valve and output an alarm signal when 100% of the hose volume is leaked more than 10 times from the gas flow rate detection unit within a predetermined time when gas leakage is detected.

Therefore, according to the intermediate gas valve apparatus and its control method of the present invention, since the leak of gas can be measured more precisely, the risk of fire due to the leak of gas can be prevented in advance.

In addition, according to the intermediate gas valve device and the control method of the present invention, it is possible to set the gas flow rate and pressure for each temperature in the gas supply path, thereby controlling the gas flow rate without being affected by the change in the external temperature.

In addition, according to the intermediate gas valve device and the control method of the present invention, by using the sensed gas pressure and flow rate, inadvertent neglect or long time use according to the use of the gas equipment, and whether the gas leaks to determine the valve automatically By closing the alarm and notifying, there is an effect that can prevent the gas accident.

In addition, according to the intermediate gas valve device and the control method of the present invention, it is possible to provide convenience to the user by preventing the gas accident by adding a protective function such as earthquake detection or temperature rise.

In addition, according to the intermediate gas valve device and the control method of the present invention, it is possible to automatically open or shut off the gas valve according to the use of the gas device, eliminating the inconvenience of the user who had to open or shut off the gas valve every time. It can work.

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may properly define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of an intermediate gas valve device according to an embodiment of the present invention, Figure 2 is a block diagram of an intermediate gas valve device according to an embodiment of the present invention.

The intermediate gas valve device 100 includes a control unit 110, a detection unit 120, a key input unit 130, a memory unit 140, a message transmission unit 150, a remote control unit 160, an operation unit 170, The determination unit 180 and the display unit 190 is configured.

The detector 120 is composed of devices for detecting the elements necessary for the operation of the intermediate gas valve device, the earthquake detector 121, the fire detector 122, the temperature detector 123, the gas flow detector ( 124, the gas pressure detecting unit 125 and the gas leakage detecting unit 126.

When the earthquake detection unit 121 transmits data that detects a certain degree or more of the use of the gas device, the control unit 110 to be described later blocks the gas supplied to the gas device and at the same time flashes the earthquake alarm light 191 and alarms. As an earthquake detection sensor to signal that the earthquake has occurred, it is preferably configured to notify the earthquake occurrence to the control center or guardian through the message transmission unit 150.

In general, it is desirable to install an earthquake detection device on the gas supply path to prevent secondary disasters such as gas explosions that may occur during an earthquake for safety supply. Since such an earthquake detection device is a general device, a detailed description thereof will be omitted. For example, Sl has a close correlation with the energy of Peak Ground Acceleration (PGA) and seismic waves in order to quickly determine whether the gas is blocked in the event of an earthquake using a sensor that can measure the movement of the ground more precisely by analyzing the ground noise pattern. A device that calculates and reflects (Spectrum Intensity) in real time can be used.

The gas pressure sensing unit 125 is disposed on a gas supply path between a predetermined gas supply source such as an external gas tank (for example, a gas tank of a city gas corporation), a gas valve, and a gas appliance.

For example, referring to the drawing illustrating the pressure sensor of FIG. 3, a first detection sensor 125b is provided between the gas supply source and the gas valve 172 (hereinafter, referred to as an outer pipe) to the gas valve 172 and the gas appliance. Between the second pipe (hereinafter referred to as the inner pipe) is provided with a second detection sensor (125a), wherein the control unit 110 based on the detection results of the first detection sensor (125b) and the second detection sensor (125a) It is configured to determine whether the ignition and the gas valve is open.

That is, when both the gas valve 172 and the valve of the gas machine are closed, the detection sensors 125a and 125b have no change in pressure (or a state in which the pressure is maintained at a pressure higher than a predetermined value) or no change in flow rate. It is in a state of detecting. When the valve of the gas appliance is opened in this state, the second detection sensor 125b detects the pressure change (or the state maintained at a pressure lower than a predetermined value) or the flow rate change of the inner pipe. (At this time, if the second detection sensor 125b is a pressure detection sensor, it will detect that the pressure decreases, and if it is a flow measurement sensor, the flow rate will be detected.)

Therefore, by the above-described process, the opening of the gas device is detected and accordingly the opening of the gas valve 172 is controlled. Meanwhile, the gas valve 172 opens as described above only when the second detection sensor 125b detects the pressure change or the flow rate change and at the same time the pressure change or the flow rate change is not detected in the first detection sensor 125a. You can also

When the valve of the gas appliance is closed in this state, the first detection sensor 125a detects a state in which there is no pressure change (or a state in which the pressure is maintained above a predetermined value) or a change in flow rate. (At this time, if the first detection sensor 125a is a pressure sensor, it will detect that the pressure is increasing or will detect a numerical value of the pressure, and if it is a flow sensor, it will detect the flow rate.) When detected, the control unit 110 controls the gas valve 172 to be closed.

When both the first detection sensor 125 and the second detection sensor 125b are configured as pressure detection sensors, the gas valve 172 may be controlled by using these two pressure detection sensors as one differential pressure sensor. That is, when the valve of the gas appliance is opened in the initial state (both the gas valve 172 and the valve of the gas appliance is closed), the pressure in the outer pipe will not change and the pressure in the inner pipe will decrease. Accordingly, when a pressure difference occurs in both pipes, the differential pressure sensor detects such a pressure difference, and accordingly, the controller 110 determines that the valve of the gas appliance is opened while the gas valve 172 is closed. 172) open control. In addition, when the valve of the gas appliance is closed in such a state (the gas valve 172 and the valve of the gas appliance are all open), the pressure increases without causing a pressure difference, so that the two detection sensors constituting the differential pressure sensor 125a and 125b detect this, and the controller 110 determines that the valve of the gas appliance is closed in the state in which the gas valve 172 is opened, and controls the gas valve 172 to be closed.

As such, when the two detection sensors 125a and 125b are employed, the opening and closing control of the gas valve 172 can be more accurately performed.

Also, in the present embodiment, similarly to the modification of the above-described embodiment, when the flow rate detected by the second detection sensor 125b exceeds the critical flow rate or the detected pressure is below the critical pressure, the gas leaks rapidly due to breakage of the inner pipe. It may be determined that the gas valve 172 is closed.

Preferably, the configuration of the sensor is a flow rate sensor for measuring the flow of gas in the pipe as described above, a pressure sensor for detecting the pressure inside the gas pipe, or a line leak detector for detecting the external leakage of gas (gas leak) And so on.

In addition, the flow sensor, the pressure sensor, the gas leak detector, or the like may be inserted into the pipe, or may be integrated with the pipe and the sensor, or may be attached to the outside of the pipe, or the sensor may be built in itself, and both of the connecting pipes may be connected to the gas pipe. It can be installed in the form of a unit (unit) of a direct connection, in the case of the unit form, as shown in Figure 3, the change in flow rate by using a change in the diameter and length of the both ends of the connection pipe directly connected to the gas pipe You can configure it to make it easier to check.

In the present embodiment, the two detection sensors are each composed of two pressure sensors or two differential pressure sensors, or one flow sensor, or one differential pressure sensor, or one pressure sensor. As shown in the figure, various methods of controlling the opening and closing of the gas valve 172 may be used by measuring and comparing the pressure or the flow rate of the gas at the gas input and output ends of the gas valve 172 as shown. Of course.

The gas flow rate detection unit 124 is installed in a path of a pipe between the gas device and the gas valve 172 to measure the flow rate of the gas flowing into the gas device. In this case, a normal thermal air flow measurement sensor is used.

Of course, the device named "flow measurement sensor" in the present invention is not limited to a thermal air flow measurement sensor, and various types of devices, which are commonly referred to as flow meters, as well as all kinds of sensors for measuring the flow rate may be employed. As such, the type of equipment for measuring the flow rate should not be construed as limiting the protection scope of the present invention, and the flow measuring sensor described below with reference to FIGS. 4 and 5 is one preferred embodiment of the present invention. It is illustrated.

Figure 4 shows an example of the thermal air flow sensor used in the present invention, Figure 5 is a cross-sectional view taken along line AA 'of the thermal air flow sensor of FIG.

4 and 5, the thermal air flow measurement sensor 60 includes a semiconductor substrate 61 such as silicon, an electrical insulating film 69a constituting a diaphragm, and an upstream side heating resistor formed on the electrical insulating film 69a ( 62a), the downstream side heat generating resistor 62b, the temperature measuring resistor 63 for detecting the temperature of the heat generating resistors 62a, 62b, and the air temperature measuring resistor 64 formed at the distal end of the substrate 61 to measure the air temperature. ), Terminal electrodes 68a, 68b, 68c, 68d, 68e, 68f and 68g for connecting the signal of the thermal air flow measurement sensor 60 to an external circuit, resistors 62a, 62b, 63 and 64, and terminal electrodes Wiring connection portions 67a, 67b, 67c, 67d, 67e, 67f, and 67g for connecting 68a, 68b, 68c, 68d, 68e, 68f, and 68g, and resistors 62a, 62b, 63, and 64, respectively. It consists of an electrical insulating film 69b for protection. Here, each of the resistors 62a, 62b, 63, 64 is formed of a silicon (Si) semiconductor thin film doped with an impurity and formed by a high concentration doping treatment so that the resistivity of the silicon semiconductor thin film is 8 × 10 −4 [Ωcm] or less. do.

The operating principle of the thermal air flow rate sensor 60 used in the present invention is as follows.

A pair of upstream and downstream side heat generating resistors 62a and 62b are electrically connected directly. The junction point (middle tab) D is connected to the terminal electrode 68 by the lead electrode 67f. The temperature for detecting the temperature of the heating resistors 62a and 62b when a heating (indirect heat) current flows through the pair of thermal resistors 62a and 62b formed on the base insulating film 69a thermally separated by the cavity 66. The temperature of the measuring resistor 63 becomes a predetermined value higher than the temperature of the air temperature measuring resistor 64 representing the temperature of the air flow.

The direction of air is detected by comparing the temperatures of the heat generating resistors 62a and 62b formed simultaneously with respect to the temperature measuring resistor 63. That is, the heat generating resistors 62a and 62b have a temperature substantially the same as the temperature of the temperature measuring resistor 63 without any air flow rate and do not exhibit any temperature difference. On the other hand, in the direction of air flow, the heat generating resistor 62a disposed on the upstream side is more likely to receive a greater cooling effect by the air flow than the heat generating resistor 62b disposed on the downstream side. In addition, since the heating resistors 62a and 62b are connected in series and are applied such that the same heating current has substantially the same amount of heat generation, the temperature of the upstream heating resistor 62a is lower than that of the downstream heating resistor 62b. The lower the value.

On the other hand, when the flow of air is reversed (reverse direction), the temperature of the downstream heating resistor 62b is lower than the temperature of the upstream heating resistor 62a. Therefore, by comparing the temperatures (resistance values) of the heat generating resistors 62a and 62b, the direction of air flow can be detected. In addition, since the control is performed such that the temperature measuring resistor 63 is higher than the air temperature measuring resistor 64 by a predetermined temperature, the measurement of the air flow rate is dependent on the heating (indirect heat) current value to be applied to the heating resistors 62a and 62b. Is performed by. In this way, the direction of the air flow rate and the detection of the air flow rate can be detected. In addition, the thermal air flow measurement sensor implemented by such a MEMS is capable of detecting a minute flow of air, thereby detecting a leak of minute gas.

The controller 110 is electrically connected to the gas flow rate detection unit 124, the operation unit 170, the temperature detection unit 123, and the like, and uses the input signal for the gas flow rate transmitted from the gas flow rate detection unit 124. It is determined whether the gas valve 172 is closed by determining whether to stop using it, inadvertently leaving it or not, and whether the gas is leaked, and controlling the gas valve 172 to close.

In addition, the controller 110 detects that the gas leaks from the upper and lower ends of the gas device or the gas valve 172. Immediately after the gas valve 172 is opened, it is normal that the gas appliance is not yet in an ignition state and therefore gas does not flow. However, when the gas leaks, the gas flows regardless of the use of the gas device, so the gas flow rate sensing unit 124 may detect the flow of the gas.

Then, the control unit 110 compares the signal value of the initial gas flow rate detected by the gas flow rate detection unit 124 immediately after the gas valve 172 is opened with the preset reference value (signal value when no gas flows) to leak the gas. Determine whether or not.

When the gas does not leak, since the signal value sent by the gas flow rate detection unit 124 is the same as the reference value, the controller 110 determines that the gas does not leak, and when the gas leaks, the gas flow rate detection unit 124 sends the gas. Since the signal value to be different from the reference value, the control unit 110 determines that the gas leaks. The controller 110 transmits a signal for closing the gas valve 172 to the operation unit 170 when it is determined that the gas is leaked, and the gas leakage warning lamp 194 of the intermediate gas valve device 100 assembly to notify the user of such a state. ) Or generate another gas leak warning signal.

The key input unit 130 is a device for inputting the operation and set value of the gas gas valve 172 of the present invention, the main switch (main sw; 131), up / down switches (up / down sw; 132, 133), gas valve It may be configured as a handle 134 for adjustment.

Main switch (main sw; 131) is a switch for turning on and off the power of the gas valve 172, the power is turned on when pressed for 2 seconds or more and the power is turned off when pressed for 2 seconds or more while the power is turned on.

Up / down switch (132,133) is a button for setting the time to use the gas valve 172 is set to 30 minutes by default in normal use, but if you press the up / down switch as needed It operates to set the time from 5 minutes, 10 minutes, 15 minutes, 20 minutes, 30 minutes, 1 hour, 2 hours, 3 hours to infinity.

The gas valve adjusting handle 134 is operated as a control valve for supplying or blocking gas supplied to the gas device in association with the operation of the gas valve 172.

Hereinafter, the gas leak detection unit 126 will be described.

The conventional method is to activate the valve to continuously pressurize the hose if it is not a rapid leak. This is because the moment the pressure is released from the hose is recognized as the moment the user turns on the gas appliance.

In this case, there is a risk of explosion due to the accumulated gas due to the operation of the valve in a narrow space closed during long vacation or travel.

Thus, the present invention locks the valve in one operation when the pressure is released within 1 hour, and the valve is not opened and the safety state is maintained even after the pressure is released. If the pressure of the hose is released more than 10 times in one day (24 hours), the valve is also operated without closing the valve even if the pressure is released after 10 times of operation.

The fire detection unit 122 is configured to detect the presence of a fire by monitoring the change in the room temperature. To this end, the fire detection unit 122 is configured to update the room temperature in units of 15 days through the temperature detection unit 123 and to monitor the change in the stored temperature and to block the gas by judging it as a fire if it rises rapidly. 192 flashes or sounds an alarm to recognize the occurrence of the fire and at the same time configured to notify the fire center to the control center or guardian through the message transmission unit 150.

In the present invention, when a temperature difference of 50 degrees or more than the stored room temperature occurs, it is determined that the fire is judged as a fire or when the indoor measurement temperature is 70 degrees or more, it is preferable to block the gas.

In addition, the control unit 110 to send a message to the preset recipient (for example, the guardian) through the message transmission unit 150 when the gas device is unused for a long time to inform that the gas device is not used for a long time, but the normal period of unused Configure to send a message to the guardian after five days.

On the other hand, the minimum operating pressure (the minimum pressure is input when using the maximum thermal power) and the maximum operating pressure are different for each gas equipment company. Can be managed.

That is, to compensate for the problem that the minimum pressure for each gas device varies depending on the number of fireballs, or two or three balls.

This adjustment maximizes the crater and presses the up-sw 132 continuously for about 10 seconds. The controller 110 displays “P1” on the time display window 195 and the minimum detected by the gas pressure sensing unit 125 at that time. The gas pressure is stored, the fireball is minimized, and the down-sw 133 is continuously pressed for about 10 seconds so that the maximum gas pressure is stored in the memory unit 140 while displaying "P2" on the time display window 195.

In addition, when the up-sw 132 is pressed for a long time, “P3” is displayed on the time display window 195, and the gas pressure according to the current weather is stored so as to be corrected according to the deviation of the gas device for each weather.

On the other hand, the maximum pressure at the time of not using a gas apparatus can also be corrected.

That is, when the main-SW 131 is pressed for 10 seconds or more while the gas valve 172 is locked, the control unit 110 reads the pressure of the gas pressure detecting unit 125 at the time of not using the gas device in the memory unit 140. Remember the maximum pressure.

The data stored in the memory unit 140 is for confirming that the gas supply source (gas cylinder, etc.) when the current gas pressure falls below a certain value or less than the maximum pressure when the gas supply source is replaced or abnormal in the external supply path.

Then, the pressure change according to the season is also configured to be corrected.

In the past, the absolute value was calibrated to the volume, which caused malfunctions in seasonal pressure changes, resulting in high pressure in summer and low pressure in winter.

Especially in the case of LPG for home use, the carburetor is malfunctioning because of low pressure in the winter outside, there was a problem to keep warm or indoor.

Every 15 days, measure the maximum pressure when the valve is locked and update the value. Read several times (more than 6 times) basically and discard the maximum and minimum values and update the average value.

Preferably, the maximum value and the minimum value are stored in consideration of the daytime difference between dawn and lunch.

The LPG will alert if it is 70% below the maximum working pressure and keep the gas on. If the pressure is less than 5%, close the valve and judge that the gas is exhausted.

The LNG shuts off the valve at the same time as 70% below the maximum working pressure.

Referring to FIG. 1, the intermediate gas valve device 100 includes an earthquake warning light 191, a fire warning light 192, an error warning light 193, a gas leak warning light 194, and a time display window 195 of the intermediate gas valve assembly. It is configured at the top of the main body and the gas valve regulator 134 is placed at the center, and the switches necessary for the operation are installed at the lower part thereof to quickly set the operation or setting of the gas valve 172 while viewing the time display window 195. And controllable.

Hereinafter, a method of controlling the intermediate gas valve device of the present invention will be described with reference to the drawings.

First, referring to a flowchart for explaining a gas leakage coping method of FIG. 6, a gas pressure sensor and a gas pressure sensor configured to measure and output a gas volume of a hose installed on a gas supply path of a gas device and supplied to the gas device may be detected. In the method of determining whether an external gas leak of a gas valve device having a gas leak detection unit is measured, the gas pressure detection unit 125 first measures the volume of gas supplied to the gas device (S210) and the controller 110 determines whether the gas leaks. To detect (S220).

If it is detected in step S220 that the gas leaks to determine whether or not within a predetermined time (S221) it is determined whether the measured volume leaked more than 100% of the hose volume (S222).

At this time, it is preferable to set the predetermined time within 1 hour, and if it is determined that the gas leakage is 100% or more within 1 hour, the controller 110 outputs a control signal for shutting off the gas valve 172 (S223) and at the same time a gas leak light 194. At the same time the flashing) and outputs an alarm signal or to notify the control center or the manager through the message transmission unit 150 (S224).

In this case, even if the pressure continues to drop, the gas valve is not operated and the safety state is maintained.

If it is determined in step S221 that the gas leak is not 100% gas leak within 1 hour, that is, when it is determined that the gas leak is 100% over an hour or more, it is determined whether 100% gas leak has occurred within 24 hours (S225). .

If the controller 110 detects 100% gas leakage within 24 hours in step S225, it determines whether the number of times is 10 or more times (S226).

If less than 10 times, repeat step S225 to continuously determine whether 100% of the gas volume leaks more than 10 times within 24 hours, and at least 100% of the gas volume leaks more than 10 times within 24 hours in step S226. When the control unit 110 outputs a control signal to block the gas valve 172 to completely shut off the gas valve 172 (S227) and at the same time flashing the gas leakage lamp 194 and outputs an alarm signal or transmits a message Through the unit 150, the control center or the manager to notify the gas leak (S224).

If it is determined in step S220 that there is no gas leak, the controller 110 determines whether to ignite the gas device such as a gas range (S230).

Since it is common to determine whether such a gas device is ignited, a detailed description thereof will be omitted.

In step S231, if it is determined that the gas appliance is ignited, it is checked whether the gas valve 172 is opened (S240).

In step S241, it is determined whether the gas valve 172 (not shown, a valve installed between the gas device and the gas valve) is opened, and if the gas valve 172 is opened, the gas valve 172 is kept open (S243). ). In this case, it means that the gas is normally used.

In addition, when it is determined in step S241 that the gas valve 172 is not opened, the controller 110 outputs a control signal for opening the gas valve 172 to open the gas valve 172 (S242). In this case, since the gas device is ignited but the gas valve 172 is not open, the gas valve 172 is opened immediately so that the gas is normally supplied to the gas device.

On the other hand, if it is determined in step S231 that the gas appliance such as the gas range is not ignited, the controller 110 determines whether the pressure of the gas flowing into the gas valve 172 is measured (S232), and the gas pressure is measured. When it is determined that the gas valve 172 is opened again (S233), if the gas valve 172 is open, the gas valve 172 is blocked (S235) and if the gas valve 172 is blocked, the gas leaks. In response, the control unit 110 outputs a control signal for shutting off the gas valve 172 to completely shut off the gas valve 172 and at the same time flashing the gas leakage light 194 while outputting an alarm signal or a message transmission unit ( 150) to inform the control center or the manager of the gas leak (S236).

In this case, the gas device is not used, but since the gas valve 172 is continuously opened and gas is being supplied, the gas device 172 is used to more safely use the gas device by blocking the open gas valve 172.

On the other hand, if the pressure of the gas flowing in step S232 is not measured-that is, if the flow rate or pressure is not measured in the gas flow rate detection unit 124 or the gas pressure detection unit 125-the control unit 110 is a gas valve ( When the gas valve 172 is determined to be blocked by checking whether the gas valve 172 is opened (S237), the gas valve 172 is maintained when the gas valve 172 is not blocked. Control to block) (S239).

Referring to the flowchart illustrating a method for setting the minimum / maximum pressure of the apparatus of FIG. 7, the method for setting the minimum / maximum pressure will be described with the detection of the pressure of the gas pressure sensing unit 125. The crater is set to be the maximum (S310).

The controller 110 determines whether the up S / W 132 of the key input unit 130 has been pressed (S311) and the up S / W 132 is pressed in the state in which the crater is maximized in step S310. If it is determined whether it is pressed continuously (S312).

In the embodiment of the present invention, the continuous press time is set to about 10 seconds.

That is, when it is determined in step S312 that the up-S / W 132 is pressed for 10 seconds or more, the controller 110 displays “P3” on the time display window 195 and then at the gas pressure sensing unit 125 at that time. The detected pressure is stored in the memory unit 140 as a pressure according to the current weather.

If the up-S / W 132 of the key input unit 130 is pressed in step S312 but is not continuously pressed, that is, not pressed for 10 seconds or more, " P1 " is displayed on the time display window 195 (S315). 140 to be stored as the minimum gas pressure (S316).

If the up-S / W 132 is not input in step S311, it is determined that the down-sw 133 is pressed (S320), and if it is determined that the down-sw 133 is pressed, the crater of the gas appliance And press down-sw 133 continuously for about 10 seconds to display " P2 " on time display window 195 (S322), so that the measured pressure at that time is stored in memory 140 as the maximum gas pressure. (S323).

Since the step may be configured to memorize the gas pressure according to the current weather and to be able to correct according to the deviation of the gas device for each weather, it is possible to set the use range for each gas device (S324).

In other words, there is a variation in the gas pressure for each gas device, so that the maximum pressure and the minimum pressure for each device can be stored for efficient use.

Specifically, the LPG will alert when the gas pressure is 70% below the maximum working pressure to suggest a replacement of the gas supply, and keep the gas equipment in use. If the pressure is less than 5%, the LPG will shut off the gas valve and judge it as exhausted.

On the other hand, LNG controls the valve to shut off at the same time as 70% below the maximum working pressure.

Preferably, 30% to 70% of the minimum pressure and the maximum pressure range is determined to be in normal use to control the opening and closing of the gas valve normally.

The step of compensating the maximum value according to the season and the external temperature will be described with reference to a flowchart illustrating the step of compensating the maximum value according to the temperature of FIG. 8.

The controller 110 determines whether the main S / W 131 that is the power on / off key of the key input unit 130 is pressed for 10 seconds or longer (S330).

This step is recognized as a step for setting a compensation value according to seasonal temperature.

That is, when it is recognized as a step for setting the compensation value according to the seasonal temperature by the continuous key input of the main S / W 131 in step S330 receives the user maximum pressure sensed by the gas pressure detection unit 125 receives the gas valve ( While maintaining the closed state 172, it is determined whether the measured pressure is equal to or greater than the initial set value (S332). (S334).

If the main S / W 131 is not pressed for more than 10 seconds in step S330 to determine the normal operation (S336), the control unit 110 is less than the initial value set in step S332 the gas valve (172) Control operation to block the) to block the gas valve (S335).

After performing steps S330 to S334 and determining whether a predetermined period has elapsed after correcting the maximum pressure (S340).

Preferably, the correction is performed about 15 days after the maximum pressure measurement or correction. That is, the maximum pressure is measured every 15 days after the initial maximum pressure storage or correction.

If it is determined in step S340 that 15 days have elapsed after the initial maximum pressure storage or correction, control is performed to check the valve closed state and measure the maximum pressure (S341).

It is determined whether the maximum pressure measured in step S341 is a pressure within ± 5% of the stored maximum pressure (S342), and if the pressure is within ± 5%, the stored maximum pressure is updated and stored to the measured maximum pressure (S342) ± 5 When the% time exceeds, the control signal is output to block the gas valve (S344).

If it is determined that 15 days have not elapsed after the initial maximum pressure storage or correction in step S340, it may be determined as normal operation (S345).

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and variations belong to the appended claims.

1 is a perspective view of an intermediate gas valve device according to an embodiment of the present invention;

2 is a block diagram of an intermediate gas valve device according to an embodiment of the present invention,

3 is a view illustrating the pressure sensor of FIG.

4 and 5 are a plan view and an A-A 'cross-sectional view showing an example of a thermal air flow measurement sensor;

6 is a flowchart illustrating a gas leakage coping method of the apparatus of FIG. 2;

7 is a flow chart illustrating a method for setting the minimum / maximum pressure of the device of FIG.

And,

8 is a flowchart illustrating steps for compensating a maximum value according to temperature.

<Description of Symbols for Main Parts of Drawings>

110: control unit 120: detection unit

121: earthquake detection unit 122: fire detection unit

123: temperature detection unit 124: gas flow rate detection unit

125: gas pressure detection unit 126: gas leak detection unit

130: key input unit 140: memory unit

150: message transmission unit 160: remote control unit

170: operating part 172: gas valve

180: determination unit 190: display unit

191: earthquake warning light 192: fire warning light

193: Error warning light 194: Gas leak warning light

195: time display window

Claims (26)

A gas valve installed on the gas supply path to open and close the gas supplied to the gas device; A gas flow rate detection unit for measuring and outputting a gas volume of the hose supplied to the gas device; A gas leak detection unit for detecting a gas leak; A control unit for outputting a control signal and an alarm signal to shut off the gas valve when the volume measured from the gas flow rate detection unit leaks more than 100% of the volume of the hose within a predetermined time when gas leakage is detected from the gas leakage detection unit; And An operation unit which cuts off the gas valve according to a control signal of the controller; Intermediate gas valve device configured to include. The method of claim 1, The control unit When the gas leakage detection unit detects a gas leak within 24 hours, the volume measured from the gas flow detection unit outputs a control signal that completely shuts off the gas valve when 100% of the volume of the hose is leaked more than 10 times. An intermediate gas valve device, characterized in that for outputting an alarm signal. A gas valve installed on the gas supply path to open and close the gas supplied to the gas device; A gas pressure sensing unit provided in the gas supply path to sense and output pressure; Measure and store the maximum pressure detected by the gas pressure sensor in a state in which the crater of the gas device is closed with the minimum value, and automatically receive the pressure signal detected by the gas pressure sensor every predetermined period and receive the stored maximum pressure. A control unit for outputting a control signal for normally operating the opening / closing of the valve by correcting the maximum pressure according to the season by storing and updating the comparison; An operation unit which opens and closes the valve according to the control signal; Intermediate gas valve device configured to include. The method of claim 3, wherein The control unit If the value measured by controlling the gas pressure detecting unit to measure the maximum pressure every 15 days after the initial maximum pressure storage is a pressure within ± 5% of the stored maximum pressure, the stored maximum pressure is updated and stored when the value exceeds ± 5%. An intermediate gas valve device, characterized in that for outputting a control signal to the operating unit to shut off the valve. A gas valve installed on the gas supply path to open and close the gas supplied to the gas device; A gas pressure sensing unit for sensing and outputting a maximum pressure and a minimum pressure of a gas pressure sensor provided in a gas path around the gas valve; Receives the pressure signal detected by the gas pressure sensing unit and stores it in the memory unit and judges the normal use when using 30% to 70% of the minimum pressure and the maximum pressure range, and outputs a control signal to normally open and close the valve. Controller; and An operation unit which opens and closes the valve according to the control signal; Intermediate gas valve device configured to include. The method of claim 5, The maximum pressure and minimum pressure An intermediate gas valve device, characterized in that for measuring the minimum or maximum crater of the gas machine. A gas valve installed on the gas supply path to open and close the gas supplied to the gas device; A gas pressure sensing unit formed in a gas path around the valve and automatically detecting and outputting a pressure every predetermined period according to a change in gas condensation state; Receives the pressure signal detected by the gas pressure sensing unit and stores it in the memory unit and judges the normal use when using 30% to 70% of the minimum pressure and the maximum pressure range, and outputs a control signal to normally open and close the valve. Controller; and An operation unit which opens and closes the valve according to the control signal; Intermediate gas valve device configured to include. The method according to claim 1, 3, 5 or 7, A message transmission unit capable of transmitting a text message; And configured to further include the control unit to control the gas device to transmit a text message that the gas device is unused for a long time to a designated phone number when it is not used for a predetermined period of time. The method according to claim 1, 3, 5 or 7, Earthquake detection means connected to exchange signals with the control unit; And the control unit outputs a control signal for shutting off the valve and outputs an alarm signal when vibrations of a predetermined value or more are detected by the earthquake sensing means. . The method according to claim 1, 3, 5 or 7, A temperature sensing unit connected to exchange the signal with the control unit and sensing an ambient temperature; And the control unit outputs a control signal for shutting off the valve and outputs an alarm signal when the temperature sensed by the temperature sensing unit is equal to or greater than a preset reference temperature. The method of claim 10, The control unit And an alarm signal at the same time as outputting a control signal for shutting off the gas valve when the temperature sensing unit has a temperature of 70 ° C. or higher or rapidly rises to 50 ° C. within a predetermined time. In the control method of the gas valve device which is provided on the gas supply path of the gas machine and has a gas pressure detector for measuring and outputting the volume of gas of the hose supplied to the gas machine and a gas leak detector for detecting the leakage of gas , (a) measuring and outputting a volume of gas supplied to the gas apparatus by the gas pressure sensing unit; (b) detecting a gas leak; (c) outputting a control signal and an alarm signal to shut off the gas valve when the volume measured in the step (a) leaks more than 100% of the hose volume within a predetermined time when the gas leak is detected in the step (b); ; And (d) shutting off the valve according to the control signal; Control method of the intermediate gas valve device comprising a. The method of claim 12, Step (c) is In the step (b), when 100% of the hose volume in the step (a) leaks more than 10 times within 24 hours when detecting the gas leak, outputting a control signal to completely shut off the valve and outputting an alarm signal. Control method of the intermediate gas valve device characterized in that. In the control method of the gas valve device provided on the gas supply path of the gas machine and provided with a gas pressure sensing unit, (a) detecting and outputting a pressure of the gas pressure sensing unit; (b) Measuring and storing the maximum pressure detected by the gas pressure sensor in a state in which the crater of the gas equipment is maximized, and receiving the pressure signal detected by the gas pressure sensor automatically every predetermined period of time, the stored maximum pressure Outputting a control signal for normally operating the opening / closing of the valve by correcting the maximum pressure according to the season by updating and storing the result; (c) blocking opening and closing of the valve according to the control signal; Control method of the intermediate gas valve device comprising a. 15. The method of claim 14, Step (b) is b-1) measuring the maximum pressure every 15 days after the initial maximum pressure storage; b-2) when the maximum pressure measured in the step is a pressure within ± 5% of the stored maximum pressure, the stored maximum pressure is updated and stored, and when the maximum pressure exceeds ± 5%, a control signal is output to the operation unit to shut off the valve. step; Control method of the intermediate gas valve device, characterized in that comprises a. In the control method of the gas valve device provided on the gas supply path of the gas machine and provided with a gas pressure sensing unit, (a) automatically detecting and outputting a pressure every predetermined period according to a change in the gas condensation state of the gas pressure sensing unit; (b) In step (a), the pressure signal is received and stored in the memory unit, and when the 30% to 70% of the minimum pressure and the maximum pressure range are used, it is judged as normal use and outputs a control signal for normally operating the opening and closing of the valve. Making; (c) blocking opening and closing of the valve according to the control signal; Control method of the intermediate gas valve device comprising a. In the control method of the gas valve device provided on the gas supply path of the gas machine and provided with a gas pressure sensing unit, (a) forming a gas path around the valve and sensing and outputting a maximum pressure and a minimum pressure; (b) a control signal for receiving the pressure signal sensed in the step (a) and storing it in the memory unit and determining that it is in normal use when the minimum pressure and the maximum pressure range are used in the range of 30% to 70%, and normally opening and closing the valve. Outputting; And (c) shutting off the valve according to the control signal; Control method of the intermediate gas valve device comprising a. The method of claim 17, The maximum pressure and the minimum pressure in step (a) is A control method for an intermediate gas valve device, characterized in that the measurement is carried out with the maximum or minimum crater of a gas appliance. The method according to claim 12, 14, 16 or 17, Step b) is And controlling the gas device to transmit a text message of long-term unused to a designated telephone number when not used for a predetermined period. The method according to claim 12, 14, 16 or 17, Step b) is And outputting an alarm signal and outputting an alarm signal at the same time when the vibration of the predetermined reference value or more is detected. The method according to claim 12, 14, 16 or 17, Step b) is And outputting a control signal for shutting off the gas valve and outputting an alarm signal when the temperature sensed by the temperature sensing unit is equal to or higher than a preset reference temperature. . The method of claim 21, Step b) is Control method of the intermediate gas valve device characterized in that when the temperature of the temperature sensing unit is 70 ℃ or more or rapidly rises to 50 ℃ within a predetermined time outputs a control signal to shut off the gas valve and at the same time . Determination unit for determining whether the gas appliance is ignited; An operation unit for determining whether to open / close a gas valve installed in a gas supply path of the gas device and to control opening and closing of the gas valve; A gas leak detection unit for detecting a gas leak; A gas flow rate sensing unit installed in a path between the gas device and the gas valve and measuring a flow rate of gas flowing into the gas device; And When it is determined that the gas device is not ignited by the determination unit and the gas valve is opened by the operation unit, the flow rate of the gas flowing into the gas device by the gas flow rate detection unit is measured. A control signal to control the operation unit to shut off the gas valve, and to shut off the gas valve when 100% of the volume of the gas supply path is leaked from the gas flow rate detection unit within a predetermined time when gas leakage is detected from the gas leakage detection unit; A controller for outputting an alarm signal; Intermediate gas valve device configured to include. 24. The method of claim 23, A memory unit for storing a volume amount in a gas path between the gas apparatuses in the gas valve; And the control unit compares the volume of the gas flow rate stored in the memory unit with the volume of the gas flow rate measured from the gas flow rate sensing unit to measure the amount of leakage. The method of claim 24, The control unit And determining that the gas device is ignited by the determination unit, and outputting a signal for controlling the opening of the gas valve when it is determined that the gas valve is shut off by the operation unit. 24. The method of claim 23, The control unit Outputting a control signal to shut off the gas valve and outputting an alarm signal when 100% of the hose volume is leaked from the gas flow detector by more than 10 times within a predetermined time when the gas leak is detected from the gas leak detection means. Intermediate gas valve device characterized in that.

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