JP2011038696A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker capable of securing safety of a burner even if there is malfunction in a safety valve. <P>SOLUTION: In a built-in cooking stove, if a heating condition of a standard burner satisfies a preset predetermined condition, automatic fire extinguishing of the standard burner can be carried out by forcibly closing the safety valve. A plurality of heating conditions is set as the condition of carrying out forcibly closing. For example, if a detected temperature of a thermistor reaches an abnormal high temperature (S13: YES), the safety valve is forcibly closed, and "throttling control" of minimizing a gas flow rate in a flow control part is carried out (S16). By this, if the safety valve is not closed due to some malfunction, since heating power of the standard burner can be minimized, temperature rising of a cooking object can be avoided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cooking device, and more particularly to a cooking device that can automatically extinguish a burner based on preset heating conditions.

  Conventionally, a supply pipe that supplies fuel gas to a burner is provided with a safety valve that cuts off the gas supply, a flow rate adjustment valve that can adjust the gas flow rate in the supply pipe, and the like in order to adjust the thermal power. In a heating cooker equipped with such a mechanism, for example, in order to prevent a tempura fire or the like, the temperature of the bottom surface of the cooking pan heated by heating means such as a burner is detected by a temperature sensor, and the detected temperature is the set temperature. There is known a gas cooking device that automatically extinguishes a burner when the temperature reaches (for example, see Patent Document 1). There is also known a cooking device provided with a timer for operating the stove for a predetermined time and having a function of automatically extinguishing a burner when the time set in the timer is reached (see, for example, Patent Document 2). . Automatic fire extinguishing is done by turning off the power supply to the safety valve and shutting off the gas supply.

JP 2009-97843 A JP 2009-2542 A

  However, in the heating cooker described in Patent Documents 1 and 2, when the safety valve does not close due to some sort of malfunction, despite the fact that the power was turned off by reaching the condition for automatic fire extinguishing, There was concern that the combustion would continue and the temperature of the food would continue to rise.

  This invention is made | formed in order to solve the said subject, and it aims at providing the heating cooker which can ensure the safety | security of a burner, even if a malfunction arises in a safety valve.

  The cooking device according to the first aspect of the present invention includes a burner, a supply pipe that supplies fuel gas to the burner, a safety valve that is provided in the supply pipe and opens and closes a gas flow path in the supply pipe, and the supply A cooking device comprising a flow rate adjusting unit that is provided in a pipe and adjusts a gas flow rate in the supply pipe, and judges whether or not the heating condition by the burner satisfies a predetermined condition set in advance. And a first control unit that performs throttle control of the flow rate adjusting unit that closes the safety valve and throttles the gas flow rate when the determination unit determines that the predetermined condition is satisfied.

  In the cooking device according to the first aspect, the determining means determines whether or not the heating condition by the burner satisfies a predetermined condition set in advance. When it is determined by the determination means that the predetermined condition is satisfied, the first control means performs the throttle control of the flow rate adjusting unit that closes the safety valve and throttles the gas flow rate. As a result, even if the safety valve does not close due to some trouble, the gas flow rate is reduced, so that the burning power of the burner is surely weakened while the burner is burning, so that an increase in the temperature of the food can be avoided. Moreover, since it can prevent that gas leaks with the maximum flow volume when it misfires, a highly safe gas cooker can be provided.

  Further, in the first aspect, in order to obtain an ignition instruction means for instructing ignition of the burner, and at least an ignition heating power required for igniting the burner when the ignition instruction means instructs the ignition It is good to have the 2nd control means which performs opening control of the flow rate adjustment part which opens the gas channel. As described above, when an ignition instruction is given by the ignition instruction means, the second control means performs opening control of the flow rate adjusting unit that opens the gas flow path in order to obtain the ignition heating power. Thus, even when the gas flow rate is reduced by the first control means, the gas flow path is opened at the time of re-ignition, so that the burner can be reliably ignited.

  In the first aspect, the heating condition includes a timer condition for automatically extinguishing when the heating time of the burner reaches a predetermined time set in advance, and the temperature of the food heated by the burner reaches a predetermined temperature. It is preferable to include at least one of an abnormal overheating condition for automatically extinguishing fire when it is regarded as abnormal overheating, and a misfire condition for automatically extinguishing when the misfire of the burner is detected. Thus, the heating condition includes at least one of a timer condition, an abnormal overheating condition, and a misfire condition, and the gas flow rate is reduced under any condition, so that a highly safe cooking device can be provided.

It is a perspective view of built-in stove 1. 3 is a conceptual diagram of a gas supply structure of a standard burner 5. FIG. It is a block diagram which shows the electrical structure of the built-in stove. It is a flowchart of the heat processing by CPU.

  Hereinafter, a built-in stove 1 according to an embodiment of the present invention will be described with reference to the drawings. The built-in stove 1 shown in FIG. 1 is incorporated into the kitchen unit by dropping and locking the appliance 2 into an opening formed in the counter top of the kitchen unit (not shown).

  First, the structure of the built-in stove 1 will be schematically described with reference to FIG. A standard burner 5 is provided on the left side of the top surface of the appliance 2 of the built-in stove 1, and a high-power burner 6 is provided on the right side. Behind the standard burner 5 and the high-power burner 6 is provided a back burner 7 for melting fire. A grill exhaust port (not shown) is provided behind the back burner 7. Exhaust covers 10 and 11 are installed at the grill exhaust port. A top plate 3 is provided on the top surface of the instrument 2 having these structures. On the upper surface of the top plate 3, five virtues 5A, 6A, and 7A for placing the cooking pan are respectively installed so as to surround the standard burner 5, the high-power burner 6, and the back burner 7, respectively.

  A grill cabinet (not shown), which is the main body of the grill, is incorporated in the center of the appliance 2. A grill burner (not shown) is provided in the grill cabinet. In the center of the front of the appliance 2, a grill window 13 is provided for checking the inside of the grill cabinet. Below the grill window 13, there is provided a grill handle 14 for drawing a tray (not shown) and a grill (not shown) forward from the inside of the grill cabinet.

  An ignition button 15 for igniting the standard burner 5 is provided on the left side of the front of the instrument 2, and an ignition button 17 for igniting the back burner 7 is provided on the right side thereof. An ignition button 16 for igniting the high thermal power burner 6 is provided on the front right side of the appliance 2, and an ignition button 18 for igniting a grill burner (not shown) in the grill cabinet is provided on the left side of the appliance 2. ing. The ignition buttons 15-18 each have built-in cock switches 15A-18A (see FIG. 3) that are turned on and off by the operation of these buttons.

  As shown in FIG. 1, a heating power adjusting lever 15B for manually adjusting the heating power of the standard burner 5 is provided immediately above the ignition button 15 so as to be rotatable in the left-right direction. A heating power adjustment lever 17B for manually adjusting the heating power of the back burner 7 is provided immediately above the ignition button 17 so as to be rotatable in the left-right direction. A heating power adjusting lever 16B for manually adjusting the heating power of the strong heating power burner 6 is also provided immediately above the ignition button 16. A heating power adjustment lever 18B for manually adjusting the heating power of the grill burner is also provided immediately above the ignition button 18. An operation panel 20 for setting a timer time, setting a heating temperature, and the like is provided below the ignition buttons 15 and 17 so as to be openable and closable. A battery box 21 for setting a dry battery is provided below the ignition buttons 16 and 18.

  The standard burner 5, high-power burner 6, back burner 7 and grill burner (not shown) detect igniters 27A to 27D (see FIG. 3) for sparking the ignition electrode and igniting and misfiring various burners. A first thermocouple 31 to a fourth thermocouple 34 (see FIG. 3) are provided.

  As shown in FIG. 1, the standard burner 5 is provided with a thermistor 23 for detecting the bottom temperature of the cooking pan placed on the five virtues 5A. The high thermal power burner 6 is provided with a thermistor 24 for detecting the bottom temperature of the cooking pot placed on the five virtues 6A. The back burner 7 is provided with a thermistor 25 for detecting the bottom temperature of the cooking pot placed on the five virtues 7A. A thermistor 26 (see FIG. 3) for detecting the temperature in the grill is provided near the communication port between the grill and the exhaust passage.

  A first gas supply pipe 60 (see FIG. 2) for supplying gas is connected to the standard burner 5, a second gas supply pipe (not shown) is connected to the high thermal power burner 6, and the back burner 7 is connected to the standard burner 5. Is connected to a third gas supply pipe (not shown), and a grill gas burner (not shown) is connected to a fourth gas supply pipe (not shown). The first gas supply pipe 60 is provided with a safety valve 38 (see FIG. 3) for opening and closing the gas flow path. The second gas supply pipe is provided with a similar safety valve 39 (see FIG. 3), the third gas supply pipe is provided with a safety valve 40 (see FIG. 3), and the fourth gas supply pipe is provided with a safety valve 41 (see FIG. 3). 3) is provided. These safety valves 38 to 41 are magnet type electromagnetic valves for shutting off the gas supply and forcibly automatically extinguishing various burners.

  Further, as shown in FIG. 2, a branch portion 61 is provided on the downstream side of the safety valve 38 of the first gas supply pipe 60 for supplying fuel gas to the standard burner 5, and a junction portion 62 is provided on the downstream side thereof. ing. A branch pipe 63 is interposed between the branch portion 61 and the junction portion 62. The branch pipe 63 is provided with a flow rate adjustment valve 28 for opening and closing the gas flow path. Therefore, the fuel gas flowing through the first gas supply pipe 60 flows through the safety valve 38 and then branches into two flow paths at the branch portion 61. When the flow rate adjustment valve 28 is opened, the amount of gas flowing through the standard burner 5 becomes maximum, and when the flow rate adjustment valve 28 is closed, the gas flow path of the branch pipe 63 is shut off. The amount is minimal. When the gas flow rate can be adjusted in multiple stages, a plurality of branch pipes may be provided, and a flow rate adjusting valve may be provided in each of the branch pipes. The gas flow rate can be adjusted in multiple stages by controlling the opening and closing of each flow rate adjustment valve.

  And the part of the 1st gas supply pipe 60 and the branch pipe 63 from the branch part 61 to the confluence | merging part 62, and the flow control valve 28 comprise the "flow control part 65" of this invention. In the flow rate adjustment unit 65, for example, in order to maintain the heating temperature by the standard burner 5 detected by the thermistor 23 within a predetermined temperature range set by the operation panel 20 (see FIGS. 1 and 3), It is possible to automatically adjust the heating power of the standard burner 5 by adjusting the gas flow rate in the gas supply pipe 60 (referred to as “high cut temperature control”). The manual heating power adjusting lever 15B described above is provided on the downstream side of the merging portion 62.

  Although not shown, the second gas supply pipe that supplies the fuel gas to the strong thermal burner 6 is also provided with a “flow rate adjusting unit” similar to the standard burner 5. The flow rate adjusting unit of the strong thermal power burner 6 is provided with two or more flow paths branching from the second gas supply pipe, and a flow rate adjusting valve is provided in the branch pipe. By controlling the opening and closing of these flow rate adjustment valves, the amount of gas flowing through the strong heating power burner 6 can be adjusted in multiple stages. The number of flow control valves is not limited to this.

  Next, the electrical configuration of the built-in stove 1 will be described with reference to FIG. The built-in stove 1 includes an electrical board 70. The electrical board 70 is provided with a microcomputer control circuit 50 that controls the combustion operation of the built-in stove 1. The microcomputer control circuit 50 includes a CPU (not shown), various control programs, a ROM that stores initial values of various data, a RAM that temporarily stores data generated during arithmetic processing of the CPU, a timer, and a non-volatile flash memory. Etc.

  As shown in FIG. 3, the microcomputer control circuit 50 includes a power supply circuit 43 that supplies the voltage of the dry battery stored in the battery box 21 (see FIG. 1) to various circuits on the electrical board 70, and cock switches 15 </ b> A to 15 </ b> A to 15 </ b> A. A switch input circuit 44 that inputs an on / off signal output from each of 18A, an operation panel communication circuit 46 that communicates with the operation panel 20, an igniter circuit 47 that drives the igniters 27A to 27D, and the flow rate shown in FIG. A flow rate adjusting valve circuit 48 for controlling the driving of the flow rate adjusting valve 28 of the adjusting unit 65 and a safety valve circuit 49 for controlling the driving of the safety valves 38 to 41 are connected to each other.

  Further, the microcomputer control circuit 50 is provided with eight analog channels for analog input (hereinafter referred to as analog CH). Of these, four analog channels 1 to 4 (not shown) are used for analog input of the thermocouple. A first thermocouple input circuit 51 that amplifies and inputs the thermoelectromotive force output from the first thermocouple 31 of the standard burner 5 is connected to the analog CH1. A second thermocouple input circuit 52 that amplifies and inputs the thermoelectromotive force output from the second thermocouple 32 of the high thermal power burner 6 is connected to the analog CH2. A third thermocouple input circuit 53 that amplifies and inputs the thermoelectromotive force output from the third thermocouple 33 of the back burner 7 is connected to the analog CH3. A fourth thermocouple input circuit 54 that amplifies and inputs the thermoelectromotive force output from the fourth thermocouple 34 of the grill burner is connected to the analog CH4.

  Further, the microcomputer control circuit 50 has a thermistor input circuit 56 for inputting an analog signal output from the thermistor 23, a thermistor input circuit 57 for inputting an analog signal output from the thermistor 24, and an analog output from the thermistor 25. A thermistor input circuit 58 for inputting a signal and a thermistor input circuit 59 for inputting an analog signal output from the thermistor 26 are connected to each other.

In the built-in stove 1 having the above-described configuration, when the heating conditions of the various burners satisfy a predetermined condition set by the microcomputer control circuit 50, the safety valve 38 is forcibly closed to thereby close the burner. It has a "forced valve closing function" that automatically extinguishes fire. A plurality of predetermined conditions are set as conditions for forcibly closing the valve. For example, the following predetermined conditions are set in the standard burner 5 of the present embodiment.
Condition 1: When the temperature detected by the thermistor 23 exceeds a preset temperature (abnormal overheating condition)
-Condition 2: When a preset timer time has elapsed (timer condition)
-Condition 3: When the first thermocouple 31 detects a misfire of the standard burner 5 (misfire condition)
* If any of these conditions 1 to 3 is satisfied, the fuel gas supply to the standard burner 5 is stopped, and if the standard burner 5 is ignited, the fire is automatically extinguished.

  In this embodiment, when the microcomputer control circuit 50 forcibly closes the safety valve 38 in each of the above conditions, “throttle control” that minimizes the gas flow rate in the flow rate adjustment unit 65 is performed simultaneously. Thereby, even if the safety valve 38 does not close due to some trouble, the heating power of the standard burner 5 can be minimized, so that an increase in the temperature of the food can be avoided. In addition, even when a misfire occurs, gas can be prevented from leaking at the maximum gas flow rate. Therefore, in the course of the heating operation from ignition to extinguishing of the standard burner 5, processing by the microcomputer control circuit 50 when the above-described conditions 1 to 3 are satisfied will be described in order with reference to the flowchart of FIG.

Condition 1: When Abnormal Overheating Condition is satisfied First, it is determined whether or not the ignition button 15 is pressed and the cock switch 15A is turned on (S11). While not being pressed (S11: NO), the process returns to S11. When the ignition button 15 is pressed (S11: YES), a magnet holding current flows through the coil of the safety valve 38 and is excited. As a result, the safety valve 38 is held in the suction open state. Then, the ignition process by the igniter 27A is executed in a state where the gas quantity necessary for the ignition heating power is supplied to the standard burner 5 (S12). When the standard burner 5 is ignited, the food to be cooked in the cooking pan placed on the five virtues 5A is heated and cooking is started.

  The temperature at the bottom of the cooking pot is detected by the thermistor 23. And in the built-in stove 1, the abnormal temperature for making it extinguish automatically is preset so that the temperature of the oil etc. in a cooking pan may not become high temperature. Then, “whether or not the detected temperature detected by the thermistor 23 has reached an abnormal temperature” is determined as the “predetermined condition” (S13). If the abnormal temperature has not been reached (S13: NO), the cooking pan is safe, and the heating operation is continued as it is. Then, as long as the ignition button 15 is not pressed again (S14: NO), the process returns to S13 to continue monitoring whether or not the abnormal temperature has been reached. When the ignition button 15 is pressed again and the cock switch 15A is turned off (S14: YES), the safety valve 38 is closed (S: 15), and the standard burner 5 is extinguished. When the standard burner 5 is extinguished, the process returns to S11.

  On the other hand, if the temperature detected by the thermistor 23 reaches an abnormal temperature (S13: YES), there is a risk of fire if heating is continued as it is, so that the safety valve 38 is forcibly closed and the flow rate adjustment valve 28 is forced. When the valve is closed, “throttle control” is performed in the flow rate adjusting unit 65 to minimize the gas flow rate (S16). Thereby, since the standard burner 5 is extinguished compulsorily, the heating of a to-be-cooked object can be stopped. Even if the safety valve 38 is not closed due to some trouble, the heating power of the standard burner 5 is minimized, so that it is possible to avoid an increase in the temperature of the cooked food even if the heating is continued. Therefore, the safety of the built-in stove 1 can be improved.

  When the ignition button 15 is pressed again and the cock switch 15A is turned off (S17: YES), at the next ignition, in order to obtain at least the thermal power necessary for ignition, the flow rate adjustment valve 28 is opened, The gas amount in the flow rate adjusting unit 65 is maximized (S18). Thus, the standard burner 5 is extinguished and the process returns to S11. While the ignition button 15 is not pressed again (S17: NO), the process returns to S17 and the process is repeated.

Condition 2: When the timer condition is satisfied Even when the condition 2 is satisfied, the same processing as the condition 1 is performed. Therefore, only the timer function and the processing when the condition 2 is satisfied will be described here. As an example of the timer function, in order to operate the standard burner 5 for a predetermined time, a “timer time” is set in advance on the operation panel 20 and is automatically extinguished when the heating time after ignition reaches the “timer time”. There is a function. In this case, in the microcomputer control circuit 50, as shown in FIG. 4, an ignition process is executed (S12), and when the ignition of the standard burner 5 is detected by the first thermocouple 31 (see FIG. 3), a timer (not shown) is used. The heating time is measured. Next, as “predetermined condition”, “whether the heating time has reached a preset timer time” is determined (S13).

  If the timer time has not yet been reached (S13: NO), the heating operation is continued as it is. When the ignition button 15 is pressed again and the cock switch 15A is turned off (S14: YES), the safety valve 38 is closed (S: 15), and the standard burner 5 is extinguished. When the standard burner 5 is extinguished, the process returns to S11.

  On the other hand, when the heating time reaches the timer time (S13: YES), the heating must be terminated, so that the safety valve 38 is forcibly closed and the flow rate adjustment valve 28 is forcibly closed. In the flow rate adjusting unit 65, “throttle control” is performed to minimize the gas flow rate (S16). That is, the gas amount in the flow rate adjusting unit 65 is minimized. Thereby, since the standard burner 5 is forcibly extinguished, the heating of the object to be cooked can be finished. Even if the safety valve 38 is not closed due to some trouble, the heating power of the standard burner 5 is minimized, so that it is possible to avoid an increase in the temperature of the cooked food even if the heating is continued. Therefore, the safety of the built-in stove 1 can be improved.

-Condition 3: When the misfire condition is satisfied Even when the condition 3 is satisfied, the same processing as the condition 1 is performed. Therefore, here, the processing of the microcomputer control circuit 50 at the time of ignition will be mainly described. As shown in FIG. 4, first, when the ignition button 15 of the standard burner 5 is pressed and the cock switch 15A is turned on (S11: YES), a magnet holding current flows through the coil of the safety valve 38 and is excited. As a result, the safety valve 38 is held in the suction open state. Next, gas is supplied to the standard burner 5 via the first gas supply pipe 60, the igniter 27A is driven, and the ignition operation of the standard burner 5 is executed (S12).

  Next, “whether or not the standard burner 5 has misfired” is determined as the “predetermined condition” (S13). When the standard burner 5 is ignited, the first thermocouple 31 is heated by the combustion flame formed at the flame outlet. At this time, a thermoelectromotive force is generated in the first thermocouple 31. The generated thermoelectromotive force is amplified by the first thermocouple input circuit 51 and input to the analog CH1 of the microcomputer control circuit 50. In the microcomputer control circuit 50, when the input electromotive force is equal to or higher than a predetermined level, it is determined that the combustion state is normal (S13: NO), and the heating operation is continued as it is. When the ignition button 15 is pressed again and the cock switch 15A is turned off (S14: YES), the safety valve 38 is closed (S15), and the standard burner 5 is extinguished. When the standard burner 5 is extinguished, the process returns to S11.

  On the other hand, if the thermoelectromotive force is less than a predetermined level due to the extinction of the flame, it is determined that a misfire has occurred (S13: YES), the supply of the adsorption holding current is stopped, the safety valve 38 is forcibly closed, and the flow rate adjustment valve By forcibly closing the valve 28, the "throttle control" is performed to minimize the gas flow rate in the flow rate adjusting unit 65 (S16). That is, the gas amount in the flow rate adjusting unit 65 is minimized. As a result, the gas supply to the standard burner 5 is shut off, and the first thermocouple 31 disappears and the safety function is activated. Even if the safety valve 38 is not closed due to some trouble, the gas amount in the flow rate adjusting unit 65 is minimized, so that the gas can be prevented from leaking from the standard burner 5 at the maximum flow rate. Therefore, the safety of the built-in stove 1 can be improved.

  As described above, in the built-in stove 1 of the present embodiment, when the heating condition of the standard burner 5 satisfies a predetermined condition set in advance, the safety valve 38 is forcibly closed to automatically turn on the burner. It has a “forced valve closing function” that extinguishes fire. A plurality of heating conditions are set as conditions for forcibly closing the valve. For example, when the detected temperature of the thermistor 23 reaches an abnormally high temperature, the safety valve 38 is forcibly closed and “throttle control” is performed to minimize the gas flow rate in the flow rate adjustment unit 65. As a result, if the safety valve 38 does not close due to some trouble, the heating power of the standard burner 5 can be minimized, so that an increase in the temperature of the food can be avoided.

  Needless to say, the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, the predetermined condition cited as an example of S13 in the above embodiment may be another condition. For example, to prevent burner from being forgotten to extinguish, the safety valve is forcibly closed when the preset combustion time is reached. “Forget to extinguish fire function”, “Thermocouple circuit error”, “Thermistor disconnection error”, “Battery voltage” The safety valve 38 may be forcibly closed and the throttle control of the flow rate adjusting unit 65 may be performed even in the case of “lowering abnormality”, “safety valve circuit failure”, or the like.

  In the above embodiment, the gas flow rate flowing through the first gas supply pipe 60 is adjusted by opening and closing the flow rate adjusting valve 28 in the “flow rate adjusting unit 65”. You may adjust with the flow regulating valve which can. In this case, it is not necessary to branch the first gas supply pipe 60.

  In addition to the above embodiment, the timer function includes, for example, a function of extinguishing a fire after a predetermined time after detecting a predetermined heating state (for example, a boiling state), and a predetermined time after the start of high-cut temperature control. Including fire extinguishing function.

  Moreover, although the said embodiment demonstrated the case where this invention was applied to a built-in stove, in addition, it is applicable also to various heating cookers, such as a table stove, a water heater, and a fryer.

DESCRIPTION OF SYMBOLS 1 Built-in stove 5 Standard burner 15 Ignition button 15A Cock switch 15B Thermal power control lever 23 Thermistor 27A Igniter 28 Flow control valve 31 1st thermocouple 38 Safety valve 50 Microcomputer control circuit 60 1st gas supply pipe 61 Branching part 62 Junction part 63 Branching pipe 65 Flow rate adjuster

Claims (3)

A burner, a supply pipe for supplying fuel gas to the burner, a safety valve provided in the supply pipe for opening and closing a gas flow path in the supply pipe, and provided in the supply pipe for adjusting a gas flow rate in the supply pipe A heating cooker comprising a flow rate adjusting unit,
Determining means for determining whether the heating condition by the burner satisfies a predetermined condition set in advance;
And a first control means for closing the safety valve and for restricting the flow rate of the flow rate adjusting unit when the determination means determines that the predetermined condition is satisfied. To cook. Ignition instruction means for instructing ignition of the burner;
Second control for performing opening control of the flow rate adjusting unit for opening the gas flow path in order to obtain at least the ignition thermal power required to ignite the burner when the ignition instruction means instructs the ignition. The cooking device according to claim 1, further comprising means. The heating conditions are:
Timer condition for automatically extinguishing when the heating time of the burner reaches a predetermined time set in advance, Abnormality to automatically extinguish when the temperature of the food heated by the burner reaches a predetermined temperature and regarded as abnormal overheating The cooking device according to claim 1 or 2, comprising at least one of an overheating condition and a misfire condition in which the burner misfires.

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