KR20050049811A - Gas automatic interception equipment - Google Patents

Abstract

The present invention relates to a gas shut-off device, in particular, to prevent the occurrence of safety accidents due to forgetfulness of the user by the reservation function of cooking time in advance, and safe use of children and the elderly as a fuse of the fuse of the fuse by the timer when going out The operation of the gas shut-off device can be controlled from a long distance, and the gas supply can be automatically shut off by detecting the gas diffused in the event of fire or outside, thereby improving usability and safety. It relates to a gas shut-off device to increase.

Description

GAS AUTOMATIC INTERCEPTION EQUIPMENT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas automatic interception equipment, and in particular, a reservation function for cooking time prevents the occurrence of a safety accident due to forgetfulness of the user in advance, and to a fuse of the fuse of the fuse by the timer when going out. Improve the usability by controlling the operation of gas shut-off device for safe use even for children and the elderly by remotely detecting the gas diffused in case of fire or outside. At the same time relates to a gas shut-off device to increase the safety of use.

In general, gas appliances (eg, gas ranges, gas oven ranges, gas burners, etc.) used in homes and businesses are made to cook various foods using liquefied natural gas or liquefied petroleum gas as fuel.

In the above, the gas is usually guided by a transfer pipe buried underground or by a pipe from a gas cylinder installed on the rooftop or outside of the building to be connected to a gas appliance. It is installed to guide the gas to the boiler room, the end of the pipe is formed with an intermediate valve for controlling the flow of the gas, the end of the intermediate valve is a typical example that the hose connected to the gas equipment is inserted and fixed.

The connection structure of the conventional gas equipment configured as described above is only the function of controlling the flow of gas by the user's operation of the intermediate valve, and therefore, due to corrosion or loose assembly and other external shocks caused by long-term use of the product. Since there is no special protection against the gas leaking from the damaged parts, there was a problem of causing a safety accident due to the explosion of the liquefied gas rapidly charged in the atmosphere.

In consideration of the above problems of the gas shutoff device, the applicant has applied for and registered the "Gas Breaker (Domestic Patent No. 246045)" and "Gas Breaker (Domestic Utility Model Registration No. 172624)". .

Among these, the gas shut-off device automatically shuts off the intermediate valve when gas leakage is detected, and prevents the occurrence of safety accidents due to forgetfulness by reserving cooking time. Saves time and energy of consumers with the auto cut off, detects the gas discharged into the crater that is turned off by overflowing the soup of the food, makes an alarm sound, and automatically shuts off the fuse cock to safely protect children and the elderly. To provide a gas shut-off device that can be used to improve the merchandise and consumer reliability of the product, and to achieve this, an intermediate valve installed in a pipe connected to the gas machine to control the flow of gas manually. In the gas shutoff device comprising: the intermediate valve and In the cover of the body is connected to the cut-off unit for transmitting the driving force of the motor through the gear reduction unit, the sensing unit connected to the blocking unit for detecting the leaked gas through the sensor, and connected to the detection unit and the blocking unit to signal the motor It was configured to include a control unit for opening and closing the intermediate valve to send, and a fixing means for fixing the body.

However, the gas shut-off device is impossible to operate at a long distance in normal use, so in order to operate the gas supply, the user has to move directly to the gas shut-off device and operate it manually. In particular, the elderly are inconvenient to operate. It was a problem that the inconvenience caused by the use is further increased.

In addition, in the case of gas detection is limited to the inside of the device (connecting portion of the intermediate valve) there is a problem that the detection of the leaking gas is not made at all when the gas leaks from other parts.

In other words, most gas leaks can be very dangerous. In particular, since there is no safety device to shut off the gas supply in the event of a fire, the role of a safety device called gas shutoff in case of emergency does not meet expectations. There was an improvement.

The present invention made in consideration of the above problems and improvements to prevent the occurrence of safety accidents due to forgetfulness of the user as a reservation function of cooking time in advance and safe use of children and the elderly as a car shut-off of the gas valve by the timer when going out The operation of the gas shut-off device can be controlled from a long distance, and the gas supply can be automatically cut off by detecting the gas diffused in the event of fire or outside, thereby improving usability and safety of use. It is a technical challenge to provide a gas shut-off device that can be increased.

The present invention for achieving the above object is a breaker for transmitting the driving force of the motor through the gear reduction unit in the cover connected to the cock is installed in the pipe connected to the gas machine, the sensor connected to the leaked gas In the configuration of the gas shut-off device comprising a sensing unit for sensing through, a control unit for opening and closing the intermediate valve by sending a signal to the motor connected to the sensing unit and the blocking unit, and the fixing means for fixing the body, the control unit The control unit sends a control signal to the front / reverse drive to operate the deceleration unit and the coke cap and the coke to operate the wireless control unit that is provided separately to block the supply of gas, and senses the internal / external temperature of the device over a certain temperature. In this case, the control unit is installed in the temperature sensing unit for blocking the gas and the floor outside the device to detect the gas diffusion The surface control unit is characterized by having an external gas leak detection unit for blocking the gas.

1 is an exploded perspective view showing the configuration of the present invention, Figure 2 is a circuit block diagram schematically showing the circuit configuration of the present invention, Figure 3 is a circuit configuration of the control unit of the present invention 4 is a circuit diagram showing a circuit configuration of the wireless control unit of the present invention, Figure 5 is a circuit diagram showing a circuit configuration of the sensing unit of the present invention, Figure 6 is a circuit diagram showing a circuit configuration of the blocking unit of the present invention. 7 is a schematic view showing an installation state of the present invention, double reference numeral 100 denotes a gas shut-off device of the present invention.

1 and 2, the present invention is a blocking portion for transmitting the driving force of the motor (M) through the reduction unit (M1) in the body connected to the cock (21) installed in the pipe connected to the gas machine ( 50 is connected to the sensing unit 40, the sensing unit 40, and the blocking unit 50 to detect the leaked gas through the sensor 41 and amplify the detected signal to be transmitted to the control unit 30. In the gas shut-off device 100 which comprises the control part 30 which sends a signal to the motor M to open and close the coke 21, and the fixing means which fixes the case 101, it operates in the control part 30. Wireless control unit 70 is provided separately to block the supply of gas by operating the deceleration unit (M1) and the coke cap 120 and the coke 21 to drive the motor (M) forward / reverse by transmitting a signal and On to detect the internal / external temperature of the car cut-off device 100, the control unit 30 shuts off the gas when a certain temperature or more It is provided with a detection unit 80 and an external gas leak detection unit 90 to be installed on the floor outside the auto shut-off device 100 to detect the gas is diffused to leak the control unit 30 to block the gas. .

As shown in FIG. 1, the fixing means is located below the case 101 in which the deceleration part M1 connected to the motor M and the coke cap 120 for transmitting the driving force of the deceleration part M1 are formed. And the fixing means has a protruding jaw that is fixed to the case 101 with a caulk cap 120 therebetween and has a protruding jaw that rises upward, and is formed in a plane between the protruding jaws facing each other. When viewed, the "??" shape of the support plate is screwed to the rotation is made freely and the support plate is bent is formed so as not to interfere with the rotation of the cock cap 120.

In addition, the inner side of the support plate is formed with a fastener having a tooth so as to be fixed to the fuse cock, the end of the support plate is formed with a through hole is formed by screwing into the through hole is fixed freely open It is made by fixing the gas shut-off device 100 by a bolt and a butterfly nut by the fuse cock (refer to the prior art "gas cut-off device (Domestic Patent No. 246045)").

As shown in FIG. 3, the controller 30 includes a microprocessor U1 for controlling the overall synchronization signal, a crystal oscillator U6 for generating a constant vibration pulse, and resistors R13, R14, and R15. Display FND1 and Closed / Counted according to the signals amplified and input from transistors Q1, Q3, Q4 and Q5 connected to R16 and transistors Q1, Q3 and Q4 and Q5. Digital timer 32 consisting of LEDs 1, 2 (D1) and D2 indicating opening, an up switch S2 for up counting display FND1, and a down switch S3 for down counting display FND1. And a reset switch S1 which erases and initializes the number set by the up / down switches S2 and S3.

The control unit 30 is provided with a receiving unit 30-1 for receiving a radio signal transmitted from the radio control unit 70 is configured to input the received signal to the microprocessor (U1).

As shown in FIG. 4, the wireless control unit 70 resets the reset switch R-SW to erase and initialize all the preceding signals, and up / down to set an operation cycle of the timer 32. The down switch UP-SW (DN-SW) and the crystal oscillator U9 for generating a predetermined clock signal are connected to each other so as to output a constant signal according to the respective switching operations and input signals of the crystal oscillator U9. It consists of the microprocessor U8 which operates with the power supply 3V, and the transmitter 71 which transmits the signal output from the microprocessor U8, The transmitter 71 is LED D3, for example.

The temperature sensor 80 is configured by connecting a demister to the input terminal of the microprocessor U1 of the controller 30.

The external gas leak detection unit 90 may be connected to the detection unit 40, or may be configured by connecting a gas detection sensor directly to an input terminal of the microprocessor U1 of the control unit 30.

As shown in FIG. 5, the detection unit 40 includes a detection sensor 41 for detecting leaked gas, an amplifying circuit 42 for amplifying the detected signal (current) into a predetermined signal, and detection of a signal. Variable IC VR1 to adjust the degree and DC-DC converter function to convert the DC voltage of the input signal to the boosted DC voltage so that the microprocessor (U1) of the control unit 30 can output It consists of (U4).

As shown in FIG. 6, the blocking unit 50 includes a backflow prevention circuit 51 which prevents the power supplied from the power supply unit 60 converting AC power into a predetermined voltage to prevent backflow. The contact point is changed in accordance with the application state of the current, and the relay unit 52 is configured to supply to the motor M side or each sensor unit.

The present invention configured as described above is installed in the coke 21 portion of the gas pipe, as shown in Figure 7 of the accompanying drawings, before the use of the gas appliance must be turned on the power switch 160 after confirming whether the handle of the combustor is locked. When turned on, the digital timer 32 of the controller 30 is initialized.

At the same time, when the motor drive signal is output from the microprocessor U1 to which power is applied, the current interrupted by the diode of the backflow prevention circuit 51 in front of the relay unit 52 is conducted to the relay unit 52, and the contact is made. When the power is applied to the motor M, the coke cap 120 also rotates along the interlock speed reduction unit M1. At this time, the coke 21 also rotates along to prevent the flow of gas from the fuse. The cock 21 that was present is opened.

In addition, when gas is delivered to the gas appliance due to the open cock coke 21, the user sets the time using the up / down switches S1 and S2.

The current transmitted to the microprocessor U1 by the operation of the up / down switches S1 and S2 is displayed in the display of the timer 32 through the transistors TR2, TR3, TR4, and TR5. It is delivered to FND1) and the user can set the appropriate time according to the type of cooking to proceed while watching the counting process.

After the above process, the user can ignite the burner by using the handle of the combustor to cook various desired foods. In particular, it requires a long cooking time such as adding a medicine, cutting the bone, and steaming various meats. In this case, if the time is set using the gas shut-off device 100, the occurrence of safety accidents due to forgetfulness of the user can be prevented in advance, and the coke 21 is automatically operated by the timer 32 when going out. Shutdown saves consumers time and energy.

For example, if the cooking time is set to 10 minutes, the counter counts down in increments of 1 minute on the display FND1, and the time is lowered to be terminated by the microprocessor U1.

If gas leaked from parts damaged by corrosion or loose assembly and other external shocks caused by long-term use of the product is detected by the gas sensor 41, the current is amplified in the amplification circuit 42. The DC voltage is boosted by the control IC (U4) functioning as a DC-DC converter and input to the microprocessor (U1). At the same time, the amplification unit connected to the microprocessor (U1) and the speaker output the same The audio signal stored in the microprocessor U1 is amplified and output. (In the present invention, the voice output unit notifies the operation state by voice or outputs a warning sound when various operations occur, which is a general technique that cannot be largely deviated from the known technology, and thus, an additional accompanying drawing or additional description is omitted.)

In addition, when a current is applied to the relay unit 52 connected to the microprocessor U1, the relay is driven to change the contact position, and a voltage is applied to the motor M to rotate the coke cap 120 and the coke 21. By blocking the flow of the user to protect the user from safety accidents.

The above-described series of operations (the operation of the green / red light emitting diode and voice and the rotation of the motor) occur almost simultaneously and are all controlled by the signal of the microprocessor U1.

In addition, when attempting to open the cock 21 without time limitation of the gas appliance, when the user rotates the manual handle backward after turning off the power switch 16 as shown in FIG. 2, the manual handle is decelerated through the support. The portion M1 is rotated and the deceleration portion M1 rotates the cock cap 120 so that the cock 21 opens the passage so that the gas flows smoothly from the fuse.

 In addition, after the end of the use again by using a manual handle on the inner side of the cover 110 to reverse the cock 21 to reverse the flow of gas from the fuse cock.

In the present invention as described above, the wireless control unit 70 (remote control) can remotely control the operation of the control unit 30, and the up / down switch (UP-SW) of the wireless control unit 70 (DN-SW). If the operation period of the timer 32 is set up / down by operating the microprocessor U8 outputs a control signal according to the clock signal input from the crystal oscillator U9, the LED D3 is transmitted as an optical signal. The transmitted optical signal is received by the receiving unit 30-1 connected to the control unit 30 and input to the control unit 30. The wireless control unit 70 uses the up / down switch (UP-SW) (DN-SW). The operation period of the set timer 32 is set, and the timing operation as described above is completed and finished.

As described above, the wireless control unit 70 can be used to control the control unit 30 of the automatic gas shutoff device 100 even at a long distance, and it is easy to use, and in particular, the elderly and the patient can be easily used.

In the present invention, although the signal transmission of the wireless control unit 70 is an optical signal, an RF transmitter (notice) is provided instead of the LED D3, and the receiver 30-1 of the controller 30 is an RF receiver (notice). It can also be configured to remotely control the gas automatic shutoff device 100 from a farther distance by configuring, as well as RF transmission / reception, it is also possible to transmit / receive using Brutus.

In addition, in the present invention, the temperature sensing unit 80 is connected to the microprocessor (U1) input terminal of the control unit 30, overloading the circuit in the fire and gas shut-off device 100 due to the temperature rises to a certain temperature ( For example, when the temperature rises above 70 ° C., the demister detects this and a signal is input to the microprocessor U1 of the controller 30. When a current is applied to the relay unit 52 connected to the microprocessor U1, the relay is driven. When the contact position is changed, a voltage is applied to the motor M to rotate the coke cap 120 and the coke 21 to block the flow of gas so that the gas is automatically locked in the event of a fire, while the device malfunctions. If this occurs, it will immediately shut off the flow of gas, such as building a triple triple safety system.

In addition, the present invention by separately installing the external gas leak detection unit 90 to detect the diffusion of the gas leaked from the gas appliances other than the cock 21 to cut off the gas supply, thereby increasing the detection width of the gas leak It further improved the function as a safety device.

The present invention as described above is a reservation function of the cooking time to prevent the occurrence of safety accidents due to the forgetfulness of the user in advance and the gas shut off to enable the children or the elderly to safely use the shut off of the gas valve by the timer when going out The operation of the device can be controlled from a long distance, while detecting a gas diffused in the event of a fire or the outside to automatically cut off the gas supply, thereby improving usability and increasing safety according to use.

1 is an exploded perspective view showing the configuration of the present invention,

2 is a circuit block diagram schematically showing a circuit configuration of the present invention;

3 is a circuit diagram showing a circuit configuration of a controller of the present invention;

4 is a circuit diagram showing a circuit configuration of a wireless operation unit according to the present invention;

5 is a circuit diagram showing a circuit configuration of a sensing unit in the present invention;

6 is a circuit diagram showing a circuit configuration of a circuit breaker according to the present invention;

7 is a schematic view showing an installation state of the present invention.

* Explanation of symbols on the main parts of the drawings *

100: shut-off device 120: cock cap

30: control unit 40: detection unit

50: blocking unit 70: wireless control unit

80: temperature detection unit 90: external gas leak detection unit

Claims (7)

In the case 101 connected to the cock 21 installed in the pipe connected to the gas appliance, the cut-off unit 50 for transmitting the driving force of the motor M through the reduction unit M1, and the leaked gas to the gas sensor 41 The sensor unit 40 detects the signal through the sensor unit 40 and amplifies the signal and transmits the signal to the control unit 30, and is connected to the sensor unit 40 and the blocker unit 50 to send a signal to the motor M. In the configuration of the automatic gas shutoff device comprising a control unit 30 for opening and closing the) and a fixing means for fixing the case 101, The control unit 30 is separately provided to cut off the supply of gas by operating the deceleration unit M1, the coke cap 120, and the coke 21 which are interlocked by forward / reverse driving the motor M. The wireless control unit 70, the temperature sensing unit 80 to detect the internal / external temperature of the device 100 to block the gas when a certain temperature or more, and the gas shut-off device 100 outside When installed on the floor to detect the gas is leaking diffusion gas control device is provided with an external gas leak detection unit 90 to block the gas 30. 2. The control unit 30 according to claim 1, wherein the control unit 30 includes a microprocessor U1 for controlling the overall synchronization signal, a crystal oscillator U6 for generating a constant vibration pulse, and resistors R13, R14, R15, and R16. Display FND1 and close / open, which are counted according to the input signal amplified from transistors Q1, Q3, Q4 and Q5, and amplified from transistors Q1, Q3 and Q4 and Q5. A digital timer 32 consisting of LEDs 1 and 2 (D1) and D2, an up switch S2 for up counting the display FND1, a down switch S3 for down counting the display FND1, and A reset switch S1 for erasing and initializing the number set by the / down switches S2 and S3, and a receiver 30-1 for receiving a radio signal transmitted from the radio control unit 70 are provided. Gas shutoff device, configured to input the microprocessor to the microprocessor U1. According to claim 1, The wireless control unit 70 is a reset switch (R-SW) for clearing and initializing all the preceding signal, and the up / down switch for setting the operation cycle of the timer 32 ( UP-SW (DN-SW) and a crystal oscillator U9 for generating a predetermined clock signal are connected to the DC power supply 3V to output a constant signal according to each switching operation and the input signal of the crystal oscillator U9. A gas shut-off device comprising a microprocessor (U8) in operation and a transmitter (71) for transmitting a signal output from the microprocessor (U8). The method of claim 1, wherein the detection unit 40 is a detection sensor 41 for detecting the leaked gas, an amplifier circuit 42 for amplifying the detected signal (current) to a predetermined signal, and adjusts the degree of detection of the signal A control IC (U4) which functions as a DC-DC converter for converting the boosted DC voltage so that the variable resistor VR1 and the DC voltage among the input signals can be processed by the microprocessor U1 of the controller 30. Gas shut off device composed of. 2. The circuit breaker of claim 1, wherein the blocking unit 50 includes: a power supply unit 60 for converting the supplied AC power into a constant voltage; and a backflow prevention circuit 51 for preventing the supplied power from flowing back. The gas shut-off device comprising a relay unit 52 for supplying to the motor (M) side or each sensor unit while the contact position is changed according to the application state of the. 4. The gas shut-off device according to claim 3, wherein the transmitting unit (71) of the wireless control unit (70) is an LED (D3). The gas shutoff device according to claim 2 or 3, wherein the transmitting unit (71) of the radio control unit (70) is an RF transmitter and the receiving unit (30-1) of the control unit (30) is an RF receiver.