KR101911820B1 - Automatic dire extinguishing apparatus for kitchen, and control method therof - Google Patents

Abstract

The present invention relates to a residential kitchen automatic fire extinguishing apparatus and a control method thereof, and more particularly, to a residential kitchen automatic fire extinguishing apparatus and a control method thereof, which comprises a temperature sensor 11 for sensing the temperature of a kitchen in which a gas stove 1 is installed, A sensing unit 10 including a gas flow rate sensor 13 for sensing a flow rate of a gas and a sensing unit 10 for sensing a fire based on a temperature change rate and a gas flow rate per a predetermined time, , And a control module (20) for controlling the interruption of the gas circuit breaker (4) and the driving of the ventilation fan (5) according to whether there is a fire or not, and for storing information on the control history.
The present invention has an advantage that it is easy to detect and cope with a fire, and a fire detection history can be managed by a black box function, so that a preliminary fire judgment and an accurate fire detection function can be performed.

Description

TECHNICAL FIELD [0001] The present invention relates to a kitchen automatic fire extinguishing apparatus and a control method thereof,

The present invention relates to a residential kitchen automatic fire extinguishing apparatus and a control method thereof, and more particularly, to a residential kitchen automatic fire extinguishing apparatus and a control method capable of easily detecting and coping with fire and managing history.

Generally, a residential kitchen is equipped with a gas stove to cook food, and the odor and smoke generated when cooking food are discharged to the hood.

The hood is provided with a suction port and a ventilation fan at the upper part of the gas range so as to discharge the air to the outside in order to discharge the odor and smoke generated when the food is cooked in the kitchen.

However, there is a risk of gas leakage and fire in the gas stove, and there are frequent accidents such as going out while sleeping, burning or fire, while the existing hood is opened only when the gas valve is opened and the switch is turned on It is not out of the working structure.

In order to prevent this, there is a fire alarm device and an auto-sprayable fire extinguisher installed in the kitchen, but each sensor that detects smoke, overheating, etc. is operated separately to easily cause errors or malfunctions, .

In recent years, an automatic ventilation system, which detects the sensor and automatically operates the ventilation fan of the hood, is applied to the new building if the food odor and the odor of the air are above a predetermined value for a pleasant kitchen environment. The fire may be transferred due to the automatic ventilation.

Patent Document 1: Korean Patent Registration No. 0243029 (registered on November 15, 1999)

An object of the present invention is to provide a residential kitchen which enables a comfortable kitchen environment by automatic ventilation, facilitates fire detection and coping, and can perform history management by adding a black box function, An automatic fire extinguishing device and a control method.

According to an aspect of the present invention for achieving the above object, the present invention provides a temperature sensor for detecting a temperature of a kitchen in which a gas stove is installed, a gas flow rate sensor for sensing a flow rate of gas supplied to the gas stove through a gas supply pipe, And a control unit for controlling the interruption of the gas circuit breaker and the driving of the ventilation fan according to whether the fire is judged or not, And a control module for storing information on the history.

The control module outputs a signal for shutting off the gas circuit breaker and stopping the ventilation fan when a change in temperature per predetermined time is equal to or higher than a predetermined value and a gas flow rate is detected.

The control module outputs a signal for shutting off the gas circuit breaker and stopping the ventilation fan when the temperature sensed by the temperature sensor is equal to or higher than a first reference value and a gas flow rate is detected, And outputs a signal to operate the fire extinguisher when the temperature becomes equal to or higher than the second reference value.

The sensing unit may include a gas sensor for sensing a gas leak in the kitchen, and the control module outputs a signal for driving the gas circuit breaker and the alarm lamp when a value detected by the gas sensor is equal to or greater than a set value.

The sensing unit includes a ventilation sensor for sensing indoor air pollution in the kitchen, and the ventilation sensor drives the ventilation fan when the sensed value is equal to or higher than a set value.

The ventilation sensor is driven by interlocking with the illuminance sensor.

Wherein the control module receives a temperature of the kitchen from the temperature sensor, receives a gas flow rate from the gas flow rate sensor, receives a gas leakage from the gas sensor, And a storage unit for storing information on the control history, and a driving unit for performing a shutoff of the gas circuit breaker and controlling the ventilation fan according to a result determined by the processing unit.

Information on the control history is read from the date storage chip every time a fire judgment event is generated, and a data field is formed together with the event and stored in the storage unit.

The data field is configured to include 'date / hour / minute / corresponding event / temperature sensor / gas sensor / ventilation sensor / voltage'.

The control module is an MPU, and the storage unit is a flash memory inside the MPU.

Measuring a temperature of a kitchen provided with a gas cooking stove by means of a temperature sensor, sensing a flow rate of the gas supplied to the gas stove through a gas supply pipe by a gas flow rate controller, Determining a fire, controlling the cut-off of the gas circuit breaker and the ventilation fan driving according to whether or not the fire is judged, and storing the information on the control history in the control module.

The control module controls the gas breaker interception and the ventilation fan driving based on the temperature and the flow rate of the gas, If there is a flow rate, it is judged as a fire, and the gas circuit breaker and the ventilation fan are stopped.

The control module controls the gas breaker interception and the ventilation fan driving based on the temperature and the flow rate of the gas, If there is no flow velocity, it is determined that the air-fuel ratio is non-fire and the ventilation fan is driven.

Wherein the control module determines a fire based on the temperature and the flow rate of the gas, and the step of controlling the cutoff of the gas circuit breaker and the ventilation fan driving according to whether or not the fire is judged comprises: If the flow rate of the gas is higher than the second reference value, the fire extinguisher is turned off by shutting off the gas circuit breaker and stopping the ventilation fan.

The indoor air pollution in the kitchen is detected by the ventilation sensor, and the ventilation fan is automatically driven when the sensed value is equal to or higher than a set value.

The automatic driving of the ventilation fan by the ventilation sensor is interlocked with the illuminance sensor and driven only during the daytime.

The gas sensor senses a gas leak in the kitchen, and if the sensed value is equal to or greater than a set value, the control module blocks the gas circuit breaker and the alarm lamp.

The step of storing information on the control history in the control module reads the date, hour, and minute from the date storage chip every time the fire determination event occurs, and stores the data field together with the event in the storage unit.

Wherein the control module is an MPU and the storage unit is a flash memory in the MPU, information on the control history is sequentially stored in the flash memory starting from an end address, and information on the control history stored in the storage unit is stored in the MPU communication port .

The present invention is capable of detecting a gas leak in a residential kitchen, detecting a fire, and facilitating a fire countermeasure, thereby preventing a fire accident or a gas leakage due to a gas leak.

Particularly, the present invention provides an automatic ventilation sensor that is installed in a building to facilitate detection and coping with a fire, and can manage a fire detection history by a black box function, thereby enabling a preliminary fire detection, .

1 is a view showing a configuration in which a residential kitchen automatic fire extinguishing apparatus according to an embodiment of the present invention is disposed.
2 is a block diagram for explaining the operation of the residential kitchen automatic fire extinguishing apparatus according to the embodiment of the present invention.
FIG. 3 is a diagram showing an example in which information on a control history according to an embodiment of the present invention is composed of data fields. FIG.
4 is a view showing an information storage map (MPU memory map) for a control history according to an embodiment of the present invention.
5 is a flowchart showing a control method of a residential kitchen automatic fire extinguishing apparatus according to an embodiment of the present invention.
6 is a flowchart showing a control method of a residential kitchen automatic fire extinguishing apparatus according to another embodiment of the present invention.

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

The residential kitchen automatic fire extinguishing system of the present invention includes a sensing unit and a control module.

1 and 2, the sensing unit 10 includes a temperature sensor 11, a gas flow meter 13, a gas sensor 15, and a ventilation sensor 17.

The temperature sensor 11 senses the temperature of the kitchen in which the gas cooking stove 1 is installed. The temperature sensor 11 can be formed by machining a hole in the center of the gas cooking hood 2. The end of the temperature sensor 11 can be exposed to the upper portion of the gas cooking stove 1 to sense the kitchen temperature around the gas stove 1. [ At this time, it is preferable that the temperature sensor 11 is installed so that its end portion is spaced from the upper surface of the gas cooking appliance 1 by about 550 mm to 750 mm. The temperature sensor 11 senses the temperature around the gas cooking stove 1 to prevent the preliminary fire and the fire.

The gas flow rate meter 13 senses the flow rate of the gas supplied to the gas stove 1 through the gas supply pipe 3. It is possible to confirm whether the gas circuit breaker 4 is open or closed by detecting the flow rate of the gas supplied to the gas stove 1. The gas circuit breaker 4 is opened when there is a flow rate of the gas supplied to the gas stove 1 and the gas circuit breaker 4 is closed when there is no gas flow rate. The gas flow rate device 13 may be installed between the gas circuit breaker 4 and the gas stove 1 in the gas supply pipe 3.

The gas sensor 15 senses a gas leak in the kitchen. The gas sensor 15 can output a gas leakage signal to the control module 20 when the gas leaks and reaches a set value or more. When the LNG is used, the gas sensor 15 is installed at a position of 30 cm or less from the ceiling surface, and when the LPG is used, it is installed at a position of 30 cm or less from the floor surface. In this embodiment, the installation position of the gas sensor 15 is shown by taking the case of using LNG as an example.

The ventilation sensor 17 detects indoor air pollution in the kitchen. The ventilation sensor 17 can drive the ventilation fan 5 when the value of the indoor air pollution is equal to or greater than the set value.

Specifically, the ventilation sensor 17 is an artificial intelligent automatic ventilation sensor for a comfortable living environment.

The ventilation sensor 17 detects various odors, combustible gases, organic solvents, cigarette smoke, noxious gases and odors. The ventilation sensor 17 has a function of comparing and judging by updating the reference value according to the surrounding environment and adapting to the surrounding environment atmosphere. It has a self-diagnosis display function in case of failure, and has a ventilation fan overheating prevention function.

The ventilation sensor 17 is driven in conjunction with the illuminance sensor so that the operation of the ventilation fan can be stopped at night. This is to reduce the noise caused by driving the ventilating fan 5 when sleeping at night. The ventilation sensor 17 can be driven in conjunction with the ventilation fan 5 in the hood 2 or the ventilation fan separately installed in the ceiling of the kitchen. In this embodiment, the ventilation sensor 17 is shown to be driven in conjunction with the ventilation fan 5 in the hood 2. [ The ventilation sensor 17 can be installed at a position of 30 cm or less from the ceiling surface.

For example, the ventilation sensor 17 detects a harmful substance in the air, acquires a resistance value by burning odors and smoke molecules from the heater in the sensor, analyzes the resistance value based on the resistance value data for each harmful substance, And the ventilation fan 5 of the hood is automatically operated by the sensor in response to the electric signal.

The control module 20 is capable of easily detecting and coping with fire based on the result detected by the sensing unit 10, and enabling history management.

The control module 20 is electrically connected to the temperature sensor 11, the gas flow meter 13, the gas sensor 15, the gas circuit breaker 4, the ventilation fan 5, the fire extinguisher 7, . The control module 20 can be fixed at a suitable position of the hood upper surface 6 that is easy to operate and easy to manage.

The control module 20 receives the information sensed by the temperature sensor 11 and the gas flow velocity meter 13, determines a fire based on a change in temperature per unit time and a gas flow rate, 4) control the shut-off and ventilation fan (5) drive, and store information about the control history.

The fire judgment is judged as a fire if the variation of the temperature per a certain time is equal to or higher than the set value and the gas flow rate is present. The control module 20 cuts off the gas circuit breaker 4 and stops the ventilation fan 5 in case of a fire.

The control module 20 includes a receiving unit 21, a processing unit 23, a driving unit 25, and a storage unit 27.

The receiving section 21 can receive the temperature of the kitchen from the temperature sensor 11, receive the gas flow rate from the gas flow rate device 13, and receive the gas leak signal from the gas sensor 15. [

The processing unit 23 can determine a fire based on the change amount of the temperature and the flow rate of the gas received through the receiving unit 21.

The processing unit 23 calculates the amount of change in temperature per a certain period of time from the temperature of the kitchen received by the receiving unit 21 and determines whether or not the amount of change in temperature per predetermined time is equal to or greater than the set value. As a result of the determination, the processing unit 23 further determines whether the rate of change of the temperature is equal to or greater than the set value, and determines that the flow rate of the gas is a fire.

The driving unit 25 cuts off the gas circuit breaker 4 and controls the driving of the ventilation fan 5 according to the result of the determination by the processing unit 23. [

For example, the determination result of the processing unit 23 may be transmitted to the driving unit 25, and the driving unit 25 may stop the gas circuit breaker 4 and stop the operation of the ventilating fan 5. The driving unit 25 is electrically connected to the gas circuit breaker 4, the ventilating fan 5, the fire extinguisher 7, and the alarm lamp 9 so as to start or stop the respective devices.

The gas circuit breaker 4 is installed in the gas supply pipe 3 and serves to supply or stop the gas to the gas stove 1. The gas circuit breaker 4 may be a mechanical or electronic gas circuit breaker.

The fire extinguisher 7 is fixed at an appropriate position of the hood top 6. The fire extinguishing liquid outlet 8 is fixed so as to be exposed toward the upper part of the gas stove 1 and connected to the fire extinguisher 7 through a copper pipe, The digester can be discharged to the gas stove (1). The fire extinguisher 7 may be an automatic fire extinguisher that emits fire extinguishing liquid for about 10 seconds.

The alarm lamp 9 can be driven upon gas leakage. The alarm lamp 9 is installed on the front of the hood so that the user can easily confirm gas leakage. For example, the processing unit 23 transmits a signal to the driving unit 25 when the value sensed by the gas sensor 15 is equal to or higher than the set value, and the driving unit 25 drives the alarm lamp 9 to cut off the gas- .

The storage unit 27 stores information on the control history.

The information on the control history is read out from the date storage chip 29 every time the fire judgment event occurs, and the data field together with the event is stored in the storage unit 27.

As shown in FIG. 3, the data field may include 'date / hour / minute / corresponding event (A) / temperature sensor / gas sensor / ventilation sensor / voltage'.

In the data field, 'Event (A)' can be recorded as 01 when the gas circuit breaker is activated (blocked) and 02 when the fire extinguisher is operating.

In the data field, 'temperature sensor' can record analog data from 0 to 255.

In the data field, the 'gas sensor' records the presence or absence of the gas sensor. 01 for gas sensor operation and 00 for gas sensor operation can be recorded. The operation of the gas sensor means that the gas sensor detects gas leakage and the gas circuit breaker 4 is activated and the alarm lamp 9 is activated.

In the data field, the 'ventilation sensor' records the presence or absence of the ventilation sensor. 01 when the ventilation sensor is operating and 00 when the ventilation sensor is not operating. The operation of the ventilation sensor means that the ventilation fan 5 is operated by the indoor air pollution detection.

The 'voltage' in the data field indicates whether the current operating power is a commercial power or a battery power. The commercial power supply is 00, and the battery power is 01.

The information on the control history composed of the above-described data fields is stored in the flash memory inside the control module 20. [

The control module 20 is an MPU, and the storage unit 27 is a flash memory inside the MPU. The flash memory in the MPU is a space in which an operating program of the control module 20 is stored, and there is an extra memory. Therefore, it is possible to implement a black box function that stores information about the control history with only software without additional hardware or memory.

As shown in FIG. 4, the information storage map (MPU memory map) for the control history is stored sequentially from the end address in the spare flash memory of the MPU. The information on the stored control history becomes a black box area and can be confirmed by using the MPU communication port.

The information on the above-described control history can be utilized as information for preliminarily determining the preliminary fire by constructing big data according to passage of time, and can be utilized as information for performing an accurate fire detection function.

The control method of the residential kitchen automatic fire extinguishing apparatus described above is such that the temperature of the kitchen in which the gas stove 1 is installed is measured by the temperature sensor 11, (S20) of sensing the flow rate of the gas supplied to the gas stove (1) through the control module (3), and judging the fire based on the temperature and the gas flow rate by the control module (S30, S40, S50 (S60, S70, S80) for controlling the interruption of the gas circuit breaker 4 and the ventilation fan 5 depending on the presence / absence of a fire judgment, and storing the control history information in the control module 20 (S90 ).

When the residential kitchen automatic fire extinguishing device is installed and operated in the kitchen, the time and setting values are input to the control module (S10).

The temperature sensor 11 senses the temperature of the kitchen, and the gas flow sensor 13 senses the gas flow rate and sensed information is transmitted to the control module (S20).

The control module 20 calculates the amount of change in temperature per a certain time using the temperature information received from the temperature sensor 11 (S30), and determines whether the amount of change in temperature per predetermined time is equal to or greater than the set value (S40). If it is determined that the flow rate of the gas is equal to or greater than the set value A, the flow rate of the gas is further determined (S50). If the flow rate of the gas (G. When it is judged as a fire, the interruption of the gas circuit breaker 4 and the ventilation fan 5 are stopped (S70, S80).

A residential kitchen in a recently constructed building installs a ventilation sensor, detects indoor air pollution in the kitchen by a ventilation sensor, and automatically activates the ventilation fan if the sensed value is above the set value. The automatic ventilation fan has the advantage of enabling a pleasant kitchen environment, but when the fire occurs, the ventilation fan may operate and the fire may be transferred due to the automatic ventilation.

In order to cope with the above case, it is important to determine the fire, and for the accurate fire judgment, the change of the temperature and the gas flow rate per a certain time are confirmed.

If the variation of the temperature per a certain time is not less than the set value, the temperature of the kitchen suddenly rises. Therefore, it is further judged whether the gas is supplied to the gas stove 1 by judging the gas flow rate. Accordingly, if the change amount of the temperature per a certain time is equal to or higher than the set value and the gas flow rate is present, it is determined as a fire.

On the other hand, if the change amount of the temperature per a predetermined time is equal to or greater than the set value and the flow rate of the gas is not present, it is determined as non-fire (S100) and the ventilation fan is driven (S100). If the change amount of the temperature per a certain time is equal to or higher than the set value and the flow rate of the gas is not present, it can be regarded as a rise in the kitchen temperature due to the radiant heat, so that the ventilation fan 5 is driven.

The control history in which the interruption of the gas circuit breaker 4 and the driving of the ventilating fan 5 are controlled according to the presence / absence of a fire judgment is made up of a data field and stored in the storage unit 27 of the control module 20 (S90).

That is, the date and time are read from the date storage chip, and then the data field is formed together with the event and stored in the storage unit.

For example, data fields as shown in Tables 1 and 2 below.

year month Work city minute second A temperature Senser Gas sensor Ventilation sensor Voltage

17 02 01 11 22 06 01 110 00 01 00 17 02 02 13 25 00 01 120 00 00 00 .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
.

6, if the temperature sensed by the temperature sensor 11 is equal to or higher than the first reference value B and the flow velocity of the gas (GF = 1), it is determined as a fire, and the gas- And the ventilation fan is stopped. When the temperature sensed by the temperature sensor is equal to or higher than the second reference value C, the fire extinguisher can be operated.

The first reference value B may be set at 100 DEG C and the second reference value C may be set at 140 DEG C. [

When the residential kitchen automatic fire extinguishing system is installed and operated in the kitchen, the time and the first reference value (100 ° C) and the second reference value (140 ° C) are input to the control module (S200).

The temperature sensor 11 senses the temperature of the kitchen, and the gas flow sensor 13 senses the gas flow rate and sensed information is transmitted to the control module S210.

The control module 20 determines whether the temperature received from the temperature sensor 11 is equal to or greater than a first reference value (S220). As a result of the determination, if the temperature received from the temperature sensor 11 is equal to or higher than the first reference value B, it is further determined whether the flow rate of the gas exists (S230). If it is judged as a fire, the interruption of the gas circuit breaker 4 and the ventilation fan 5 are stopped (S250, S260).

It is further determined whether the temperature received from the temperature sensor 11 is equal to or higher than the second reference value C in step S270 after the interruption of the gas circuit breaker 4 and the ventilation fan 5 is stopped. If the received temperature is equal to or higher than the second reference value C, the fire extinguisher is operated 280.

On the other hand, if the temperature sensed by the temperature sensor 11 is equal to or higher than the first reference value B and the flow velocity of the gas does not exist, it is determined as non-fire (S300) and the ventilation fan 5 is driven (S310).

The control history of the interruption of the gas circuit breaker 4 and the driving of the ventilation fan 5 according to the presence / absence of a fire judgment is configured in the data field and stored in the storage unit 27 of the control module 20 (S290).

After the control history is stored in the storage unit, the process returns to step S210 and the above process is repeated.

The control method of the embodiment and the control method of the residential kitchen automatic fire extinguishing device can be applied to each other.

Hereinafter, the operation of the present invention will be described by way of examples.

As shown in FIG. 5, in the embodiment, the processing section of the control module compares the predetermined amount of change in temperature per predetermined time with a preset value, and when the measured temperature is equal to or greater than the set value, the opening and closing of the gas circuit breaker is confirmed based on the gas flow rate through the gas flow rate device .

If the control module determines that the gas circuit breaker is open as a result of checking the gas circuit breaker, the control module outputs a signal to the gas circuit breaker and outputs a signal to stop the gas circuit breaker and stop the ventilation fan operation.

Also, the control module reads the above-mentioned event from the date storage chip, stores the data field together with the event, and stores it.

On the other hand, if the control module determines that the gas circuit breaker is closed as a result of the opening and closing of the gas circuit breaker, the control module determines that the fire is a non-kitchen fire, reads the event from the date chip, .

Alternatively, if the control module determines that the gas circuit breaker is closed as a result of the opening / closing of the gas circuit breaker, the control module determines that the gas circuit breaker is closed and transmits a signal to the ventilation sensor to operate the ventilation fan for a predetermined period of time to discharge smoke, . After reading the year, month, hour, minute and second from the date storage chip, the data field is constructed and stored together with the event.

Here, it is determined that the gas circuit breaker is closed when the gas flow rate is not operated at a predetermined speed or more.

6, in another embodiment, when the control module receives the temperature of the kitchen from the temperature sensor and reaches 100 deg. C, it confirms opening and closing of the gas circuit breaker based on the gas flow rate through the gas flow rate device. If it is determined that the gas circuit breaker is open, the gas circuit breaker is operated (closed) to shut off the gas supply by the gas stove and the fire extinguisher 7 is operated at 140 ° C.

On the other hand, if the control module receives the temperature of the kitchen from the temperature sensor and it is determined that the gas circuit breaker is closed even if the temperature reaches 100 ° C, the control module judges the non-kitchen fire and outputs only the signal for driving the ventilation fan.

In addition, the control module receives the indoor air pollution state of the kitchen from the ventilation sensor, and outputs a signal for driving the ventilation fan when the temperature exceeds the set value.

The control module receives the gas leakage from the gas sensor and operates the gas circuit breaker to shut off the gas supply to the gas stove and output an alarm lamp driving signal if the gas leakage is greater than the set value.

Further, the control module reads the year, hour, hour, minute and second from the date storing chip every time the above-described event occurs, and then constructs and stores a data field together with the corresponding event.

The above-described residential kitchen automatic fire extinguishing device and control method are installed in a building to which a ventilation sensor is applied, so that it is easy to detect and cope with a fire, and a fire detection history can be managed by a black box function to perform preliminary fire judgment and accurate fire detection can do.

Also, the stored data fields for the fire history management are accumulated as time elapses to become big data, and the big data can be used as fire prevention data by analysis. In addition, the above-described fire history data may be provided to a predetermined receiving unit so that emergency fire can be provided, such as fire trucks dispatched promptly in case of a fire.

Best Mode for Carrying Out the Invention The present invention has been described with reference to the drawings and the specification. Although specific terms are used herein, they are used for the purpose of describing the present invention only and are not used to limit the scope of the present invention described in the meaning of the claims or the claims. Therefore, it is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: Gas Range 2: Hood
3: gas supply pipe 4: gas circuit breaker
5: ventilation fan 6: hood top
7: extinguisher 8: outlet
9: Alarm lamp 10:
11: Temperature sensor 13: Gas flow meter
15: gas sensor 17: ventilation sensor
20: control module 21:
23: processing section 25:
27: storage part 29: date storage chip

Claims (19)

A sensing unit including a temperature sensor for sensing the temperature of the kitchen in which the gas stove is installed and a gas flow rate sensor for sensing the flow rate of the gas supplied to the gas stove through the gas supply pipe; And
And a control unit for controlling the operation of interrupting the gas circuit breaker and the ventilation fan according to whether the fire is judged or not, and storing the history information on the control Control module; / RTI >
The control module
If it is determined that the change amount of the temperature per a predetermined time is equal to or higher than the set value and the gas flow rate is higher than the predetermined value,
If the change amount of the temperature per a predetermined time is equal to or greater than a set value and the flow rate of the gas is not present, the ventilation fan is driven by determining that the kitchen temperature is increased due to radiant heat,
If the temperature sensed by the temperature sensor is equal to or higher than the first reference value and the gas flow rate is high,
Closing the gas circuit breaker and stopping the ventilation fan,
Wherein the fire extinguisher is operated when the temperature detected by the temperature sensor is equal to or higher than a second reference value,
Wherein the sensing unit includes a ventilation sensor for sensing indoor air pollution in the kitchen,
Wherein the ventilation sensor drives the ventilation fan when the sensed value is equal to or greater than a set value,
The ventilation sensor is interlocked with the illuminance sensor to reduce noises due to the driving of the ventilation fan when sleeping at night,
The control module
A receiver for receiving the temperature of the kitchen from the temperature sensor, receiving a gas flow rate from the gas flow rate sensor, and receiving gas leakage from the gas sensor;
A processor for determining a fire based on a variation in temperature per unit time and a flow rate of gas received through the receiver;
A driving unit for performing a shut-off of a gas circuit breaker and a ventilation fan driving control according to a result of the determination by the processing unit; And
And a storage unit for storing history information on the control,
Wherein the history information on the control is read from the date storage chip every time a fire judgment event occurs, and a data field is formed together with the event and stored in the storage unit.
delete delete The method according to claim 1,
Wherein the sensing unit includes a gas sensor for sensing a gas leak in the kitchen,
Wherein the control module drives the gas circuit breaker and the alarm lamp when the value detected by the gas sensor is equal to or greater than a set value. delete delete delete delete The method according to claim 1,
The data field
And a " year / month / hour / second / event / temperature sensor / gas sensor / ventilation sensor / voltage ". The method according to claim 1,
Wherein the control module is an MPU, and the storage unit is a flash memory inside the MPU. Measuring the temperature of the kitchen in which the gas stove is installed by the temperature sensor and sensing the flow rate of the gas supplied to the gas stove through the gas supply pipe by the gas flow rate;
Determining a fire based on the temperature and the flow rate of the gas by the control module, and controlling the cut-off of the gas circuit breaker and the ventilation fan driving according to whether or not the fire is judged; And
And storing the history information on the control in the control module,
The indoor air pollution in the kitchen is detected by the ventilation sensor and the ventilation fan is automatically driven when the sensed value is equal to or higher than a set value,
Wherein the ventilation fan is driven only by the intermittent operation of the air conditioner in order to reduce noise caused by driving the ventilation fan during nighttime sleep,
The gas sensor detects a gas leak in the kitchen, and if the sensed value is equal to or greater than a set value, the control module causes the gas breaker interruption and the alarm lamp to be driven,
Wherein the step of storing the history information for the control in the control module comprises:
A date field is read from the date storage chip every time the fire determination event occurs, a data field is formed together with the event, and the data field is stored in the storage unit,
Wherein the control module is an MPU and the storage unit is a flash memory inside the MPU,
History information on the control is sequentially stored in the flash memory starting from an end address,
Information on the control history stored in the storage unit is confirmed using the MPU communication port,
Wherein the step of judging a fire based on the temperature and the flow rate of the gas by the control module and controlling the cutoff of the gas circuit breaker and the driving of the ventilation fan in accordance with the presence /
If the change amount of the temperature per a predetermined time is equal to or higher than the set value and the flow rate of the gas is higher than the predetermined value, it is determined as a fire, the gas circuit breaker is shut off,
If the change amount of the temperature per a predetermined time is equal to or more than the set value and the flow rate of the gas is not present,
If the temperature sensed by the temperature sensor is equal to or higher than the first reference value and the gas flow rate is higher than the first reference value, Wherein the fire extinguisher is operated when the fire extinguisher is in operation. delete delete delete delete delete delete delete delete

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