gas stove

Abstract

To provide a gas cooking stove that can display a reliable temperature.SOLUTION: A gas cooking stove includes a left cooking stove and a sensor. The left cooking stove burns a mixture gas of a gas and air and forms a flame. The sensor includes a thermistor and abuts on a bottom of a container supported by a trivet to detect a temperature of the bottom. A CPU displays an estimated temperature of an object to be heated which is estimated on the basis of a detection result by the thermistor on a display (S30) after a lapse of standby time from when the left cooking stove stops burning (S27: YES).SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a gas stove.

Background Art

[0002] Conventionally, there has been proposed a cooking heater including a burner, a temperature sensor that contacts the bottom surface of a container from below to detect the temperature of the container, and a display unit. Based on a correction value according to the type of the container, the amount of the cooked food, and the heating state by the burner, the estimated temperature estimated from the detection value from the temperature sensor is corrected and displayed on the display unit (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the cooking heater described in Patent Document 1, when the size of the container is different or the size of the flame generated from the burner is different, the heat transfer state near the contact portion of the sensor on the bottom surface of the container is different. Therefore, there is a problem that a temperature that is excessively lower or higher than the actual temperature is estimated. As a result, the variation in the displayed temperature is large, and it is difficult to display a reliable temperature.

[0005] An object of the present invention is to provide a gas stove capable of displaying a reliable temperature.

Means for Solving the Problems

[0006] The gas stove according to claim 1 includes a stove burner that burns a mixed gas of gas and air to form a flame, a sensor that is provided on the stove burner, contacts the bottom of a container supported on a trivet, and detects the temperature of the bottom, and after the combustion of the stove burner stops, a predetermined waiting time elapsesFurthermore, the temperature of the portion of the sensor that contacts the bottom is smoothed out. Later, the heated object inside the container is estimated based on the detection results of the sensor. Smoothed The system is characterized by comprising a display control unit that displays the estimated temperature on a display unit.

[0007] The gas stove according to claim 2 includes: a setting unit for setting the set temperature of the object to be heated; a combustion stop unit for stopping the combustion of the stove burner when the estimated temperature reaches a specified temperature higher than the set temperature after the combustion of the stove burner has started; a determination unit for determining whether the estimated temperature has reached the set temperature after the combustion stop unit has stopped the combustion of the stove burner; and a notification unit for notifying when the determination unit determines that the estimated temperature has reached the set temperature. It may be provided.

[0008] In the gas stove according to claim 3, the waiting time may be the time from when the combustion of the stove burner stops until heat transfer in the container progresses from the part heated by the flame of the stove burner to other parts.

[0009] The gas stove according to claim 4 may include a storage unit that stores time information indicating the correspondence between the slope of the temperature change at the bottom detected by the sensor at the start of combustion of the stove burner and the waiting time; a calculation unit that calculates the slope of the temperature change at the bottom at the start of combustion of the stove burner; and a determination unit that determines the waiting time based on the slope of the temperature change at the bottom calculated by the calculation unit and the time information stored in the storage unit. [Effects of the Invention]

[0010] According to the gas stove of claim 1, heat transfer from the part of the container heated by the flame to other parts (including the object being heated) progresses during the time between the cessation of combustion of the stove burner and the elapsed of a predetermined waiting period. As a result, even if the temperature of the contact part of the sensor is extremely high or extremely low at the start of combustion, for example, the temperature of the contact part is smoothed out. Therefore, the gas stove can reduce the variation in estimated temperature caused by the type of container, the flame power of the stove burner, and the amount of the object being heated, and thus display a reliable estimated temperature on the display unit.

[0011] According to the gas stove of claim 2, there are cases where a set temperature lower than the boiling point of water is set. For example, this may be necessary for brewing coffee, pasteurizing baby bottles, and low-temperature cooking of roast beef, etc. In such cases, combustion of the stove burner stops when it reaches a specified temperature that exceeds the set temperature after combustion has started. After combustion stops, heat transfer from the container to the object being heated progresses over time. As a result, the estimated temperature gradually approaches the set temperature, and a notification is given when it reaches the set temperature. Therefore, the user can recognize that the object being heated has reached the desired set temperature.

[0012] According to the gas stove of claim 3, after the combustion of the stove burner stops and a waiting period has elapsed, heat transfer has progressed throughout the entire container, thus reducing the estimated variation in the second temperature.

[0013] According to the gas stove of claim 4, the slope of the temperature change detected by the sensor at the start of combustion of the stove burner differs depending on the type of container, the heat output of the stove burner, and the amount of material being heated. By calculating the slope of the temperature change at the start of combustion of the stove burner and referring to the time information stored in the memory unit, the waiting time can be easily determined. [Brief explanation of the drawing]

[0014] [Figure 1] This is a perspective view of gas stove 1. [Figure 2] This is a front view of the left control panel 19. [Figure 3] This graph shows the time-dependent changes in thermistor temperature and water temperature. [Figure 4] This is a block diagram showing the electrical configuration of gas stove 1. [Figure 5] This is a conceptual diagram of the waiting time table 20. [Figure 6] This is a flowchart of the display control process. [Figure 7] This is a flowchart continuing from Figure 6. [Modes for carrying out the invention]

[0015] Embodiments of the present invention will be described below. The apparatus configurations and processes described below are merely illustrative examples and are not intended to limit the invention to those described below unless otherwise specified. The drawings are used to illustrate the technical features that the present invention may employ. The following explanation will use the left / right, front / back, and up / down directions indicated by arrows in the drawings.

[0016] Referring to Figure 1, the configuration of the gas stove 1 will be described. The gas stove 1 is a built-in stove and comprises a casing 2 and a top plate 3. The casing 2 has an opening at the top, and the top plate 3 is installed in the opening. On the top plate 3, a right burner 4 (hereinafter referred to as right burner 4) is provided on the front right, a left burner 5 (hereinafter referred to as left burner 5) is provided on the front left, and a rear burner 6 (hereinafter referred to as rear burner 6) is provided on the back center. Near the flame hole of the right burner 4, the ignition electrode of igniter 4A and thermocouple 4B (see Figure 3) are installed so as to face the flame hole. Near the flame hole of the left burner 5, the ignition electrode of igniter 5A and thermocouple 5B (see Figure 3) are installed so as to face the flame hole. Near the flame hole of the rear burner 6, the ignition electrode of the igniter 6A and the thermocouple 6B (see Figure 3) are installed so as to face the flame hole.

[0017] Igniters 4A to 6A generate a spark discharge at the ignition electrodes when driven, and ignite the gas ejected from the flame holes. Thermocouples 4B to 6B are heated by the flame formed at the flame holes to generate a thermoelectromotive force. The gas stove 1 can detect misfires in the right burner 4, the left burner 5, and the rear burner 6 based on the thermoelectromotive force generated in the thermocouples 4B to 6B. Sensors 24, 25, and 26 that protrude upward are provided at approximately the center of each of the right burner 4, the left burner 5, and the rear burner 6. Thermistors 4C, 5C, and 6C are housed inside each of the sensors 24, 25, and 26. The sensors 24, 25, and 26 are pressed down by abutting against the bottom of the container placed on the stove top. The thermistors 4C, 5C, and 6C detect the temperature of the bottom of the container through the abutting portions of the sensors 24, 25, and 26, respectively.

[0018] An exhaust port 7 of a grill compartment (not shown) is provided at the rear part of the top plate 3. A grill door 8 is provided at approximately the center of the front surface of the gas stove 1. The grill door 8 opens and closes the opening portion at the front side of the grill compartment. Two operation buttons 11 and 12 are provided side by side in the horizontal direction in the region on the right side of the grill door 8. Two operation buttons 13 and 14 are provided side by side in the horizontal direction at the same height position as the operation buttons 11 and 12 in the region on the left side of the grill door 8. Each of the operation buttons 11 to 14 is operated to perform ignition, fire extinguishing, and flame adjustment of the right burner 4, the grill burner (not shown) in the grill compartment, the rear burner 6, and the left burner 5. Four fuel supply devices (not shown) corresponding to each of the operation buttons 11 to 14 are provided inside the housing 2. The fuel supply devices supply gas to the corresponding right burner 4, grill burner, rear burner 6, and left burner 5 in conjunction with the operation of the corresponding operation buttons 11 to 14.

[0019] Below the operation buttons 11 and 12, a panel 9A is provided, and below the operation buttons 13 and 14, a panel 9B is provided. When the panel 9A is pushed in with a finger, the right operation panel 18 (see FIG. 4) fixed to the back of the panel 9A is rotated forward around the lower part by a well-known push-push mechanism (not shown) and pulled out. On the right operation panel 18, various buttons for operating the right stove 4 and the grill device respectively, and a display section for displaying the timer time and the like are provided. When the panel 9B is pushed in with a finger, the left operation panel 19 fixed to the back of the panel 9B is rotated forward around the lower part by the push-push mechanism and pulled out.

[0020] As shown in FIG. 2, in the left region of the left operation panel 19, an operation region for the left stove 5 is provided, and in the right region, an operation region for the back stove 6 is provided. In the operation region for the left stove 5, a display section 91, a menu button 92, a + key 93, a - key 94, etc. are provided. The display section 91 displays the timer time, the keep temperature, the set temperature, and the like. The menu button 92 sets a menu using the left stove 5. The menu has four functions: the simmering function, the boiling function, the temperature keep function, and the set temperature function.

[0021]

[0022] For the content in where the functions are described, the following is the full translation: The simmering function reduces the heat to low when it boils and adjusts the heat when the temperature drops to maintain a temperature around 100°C. The boiling function gives a buzzer notification when the water boils and automatically extinguishes the fire. Also, the timer can be set to keep the water warm for up to 90 minutes (in 1-minute increments) after boiling. The temperature keep function keeps the oil temperature constant at one of the seven levels (140 - 200°C). A timer can be set for the keep temperature.The set temperature function is used when heating at a temperature lower than 100°C, such as when brewing coffee, pasteurizing baby bottles, or cooking roast beef at low temperatures. The set temperature function accepts the input of the set temperature, heats the contents to be heated (e.g., water) in the container to a temperature higher than the set temperature, then extinguishes the flame. After a waiting period (described later), the estimated temperature of the contents in the container is displayed on the display unit 91, and a buzzer sounds when the set temperature is reached. The set temperature function will be described later. The + key 93 and - key 94 are used to set various parameters such as the timer, keep temperature, and set temperature.

[0023] Referring to Figure 3, the difference between the thermistor temperature and the actual water temperature, and its change over time, will be explained. The thermistor temperature is, for example, the temperature at the bottom of the container detected by thermistor 5C in the left burner 5. As will be described later, the gas burner 1 estimates the temperature of the heated object (e.g., water) in the container based on the thermistor temperature using a predetermined temperature correlation formula. The temperature correlation formula is a mathematical formula that shows the temperature correlation between the thermistor temperature and the temperature of the food being cooked.

[0024] The graph in Figure 3 compares the time change of the thermistor temperature with the time change of the actual water temperature when the left burner 5 was ignited at t0, the water in the container was heated to 100°C, and then the burner was turned off at t3 (when it reached 100°C) and left to stand. The actual water temperature in the container was measured with a thermometer.

[0025] When the left burner 5 is ignited at t0, the thermistor temperature rises rapidly and then continues to rise to 100°C while maintaining a constant slope. Immediately after ignition, the thermistor 5C in the sensor 25 is affected by the high-temperature air surrounding the flame formed at the flame hole of the left burner 5, so the thermistor temperature tends to be higher than the actual water temperature. In addition, the heat transfer conditions near the contact point of the sensor 25 differ depending on various factors such as the size and material of the container, the amount of water in the container, and the heat output of the burner. Therefore, the thermistor temperature may be excessively high or low compared to the actual temperature.

[0026] Then, when the flame is extinguished at t3, when the thermistor temperature reaches 100°C, the thermistor temperature gradually decreases, similar to the actual change in water temperature. During this time, heat transfer progresses from the part of the container heated by the flame to other parts, or to the water. Therefore, even if the temperature of the contact point of the sensor 25 is extremely high during combustion and there is a large difference from the actual water temperature, the temperature near the contact point is smoothed out. As a result, the difference between the thermistor temperature immediately after extinguishing the flame and the actual water temperature gradually decreases over time.

[0027] Based on the nature of the changes described above, in this embodiment, when a heated object is desired to be heated to a temperature lower than 100°C (for example, 80°C or lower), the set temperature function described above is used to heat the object to a predetermined temperature that is a predetermined temperature higher than the desired temperature, then extinguish the flame, and after a waiting period described later has elapsed when the temperature of the object to be heated is approximately equal to the actual temperature of the object to be heated, the estimated temperature of the object to be heated is displayed on the display unit 91. The display control processing (see Figures 6 and 7) that is executed when the set temperature function is set will be described later.

[0028] Referring to Figure 4, the electrical configuration of the gas stove 1 will be explained. The gas stove 1 is equipped with a control circuit 100. The control circuit 100 includes a CPU 101, ROM 102, RAM 103, non-volatile memory 104, I / O interface (not shown), etc. The CPU 101 comprehensively controls the various operations of the gas stove 1. The ROM 102 stores various programs such as the display control program. The display control program executes the display control processing (see Figures 6 and 7) which will be described later. The RAM 103 temporarily stores various information. The non-volatile memory 104 stores various information such as the standby time table 20 (see Figure 5) which will be described later.

[0029] The control circuit 100 is connected to the power supply circuit 120, switch input circuit 111, thermocouple input circuit 112, right operation panel 18, left operation panel 19, LED driver circuit 115, safety valve circuit 116, solenoid valve circuit 117, igniter circuit 118, thermistor input circuit 119, buzzer output circuit 122, and the like. The power supply circuit 120 steps down the AC (e.g., 100V) supplied from the power supply 125 to DC (e.g., 5V), rectifies it, and supplies power to the various circuits. The switch input circuit 111 detects the on / off state of the igniter switch 15 and circuit board switch 16 of the fuel supply device (not shown) and inputs this information to the power supply circuit 120 and the control circuit 100. The control circuit 100 starts operating when the circuit board switch 16 of any fuel supply device is turned ON, and stops operating when the circuit board switches 16 of all fuel supply devices are turned OFF. The thermocouple input circuit 112 inputs the detected values ​​(signals corresponding to thermoelectric power) from thermocouples 4B to 6B to the control circuit 100.

[0030] The LED driver circuit 115 controls the lighting and extinguishing of multiple LEDs 17 located on the front, right control panel 18, and left control panel 19 of the gas stove 1. The safety valve circuit 116 opens and closes the safety valve 48 of the fuel supply device based on the control of the CPU 101. The solenoid valve circuit 117 opens and closes the solenoid valve 61 located in the flow path of the fuel supply device based on the control of the CPU 101. The igniter circuit 118 drives igniters 4A to 6A respectively based on the control signals output by the CPU 101 according to the state of the igniter switch 15. Thermistor input circuit 119 inputs the detected values ​​(signals corresponding to the detected temperature) from thermistors 4C to 6C to the control circuit 100. The buzzer output circuit 122 outputs a buzzer from speaker 121 based on the control signals output by the CPU 101.

[0031] Referring to FIG. 5, the standby time table 20 will be described. The standby time table 20 stores by associating the tilt range, the heating power, and the standby time W respectively. The tilt range is obtained by dividing the slope S of the thermistor temperature from 1 minute to 3 minutes after ignition, which is the start of combustion, into a plurality of ranges. Note that the parameters A0, A1, A2, A3,... for setting the tilt range have the relationship of A0 < A1 < A2 < A3,.... The heating power is the heating power of the stove burner, and in this embodiment, there are two types: weak heating power and strong heating power. The standby time W is set according to each tilt range, and is the standby time until the estimated temperature of the object to be heated, which is estimated based on the thermistor temperature after extinguishing the fire, is displayed on the display unit 91. Generally, the larger the slope S, the longer the standby time W, and the smaller the slope S, the shorter the standby time W. Also, the standby time W when the heating power is strong is longer than the standby time W when the heating power is weak.

[0032] Referring to FIGS. 6 and 7, the display control process will be described. In this embodiment, the case of obtaining hot water at 80°C using the set temperature function in the left stove 5 will be described as an example. First, place the kettle filled with water on the stove top of the left stove 5 and open the left operation panel 19 (see FIG. 1). Next, at t0 (see FIG. 3), press the operation button 14 to ignite the left stove 5. When the CPU 101 detects that the left stove 5 has been ignited, it reads the display control program from the ROM 102 and executes this process. The user rotates the operation button 14 to adjust the heating power.

[0033] As shown in FIG. 6, the CPU 101 determines whether the menu button 9 is pressed (S10). If the menu button 92 is pressed (S10: YES), the CPU 101 determines whether the set temperature function is selected (S11). The user presses the menu button 92 on the left operation panel 19 to select the set temperature. Each time the menu button 92 is pressed, the selected menu is switched, and the LED on the left side of the selected menu lights up.

[0034] If menu button 92 is not pressed (S10: NO), CPU 101 determines whether the fire has been extinguished or not (S12). If the fire has been extinguished (S12: YES), CPU 101 terminates this process. If the fire has not been extinguished (S12: NO), CPU 101 returns to S10 and repeats the above process. Also, if another menu is selected (S11: NO), CPU 101 executes the selected menu (S13) and terminates this process.

[0035] If the set temperature function is selected (S11:YES), the CPU 101 accepts the set temperature (S14). The user inputs the set temperature by operating the + key 93 and - key 94 on the left control panel 19. The entered set temperature is displayed on the display unit 91. The CPU 101 accepts the input set temperature and stores the accepted temperature in the RAM 103 (S15). The CPU 101 calculates the specified temperature by adding a predetermined temperature to the stored set temperature (S16). The calculated specified temperature is stored in the RAM 103. For example, if the predetermined temperature is 20°C, 20°C is added to the set temperature of 80°C, so the specified temperature becomes 100°C.

[0036] The CPU 101 acquires the thermistor temperature C1 at t1 (see Figure 3), one minute after ignition has started (S17), and acquires the thermistor temperature C2 at t2 (see Figure 3), two minutes after ignition has started (S18). The acquired thermistor temperatures C1 and C2 are stored in the RAM 103. The CPU 101 uses the stored thermistor temperatures C1 and C2 to calculate the slope S of the time change of the thermistor temperature over one minute (S19).

[0037] Next, the CPU 101 refers to the waiting time table 20 (see Figure 5) stored in the non-volatile memory 104 and determines the waiting time W corresponding to the calculated slope S and the current heat output (S20). While there are no limitations on the method of obtaining the heat output, for example, the heat output may be estimated by detecting the rotation angle of the operation button 14 using a sensor. The determined waiting time W is stored in the RAM 103.

[0038] Next, the CPU 101 acquires the thermistor temperature (S21). The CPU 101 uses the acquired thermistor temperature and the temperature correlation formula to estimate the temperature of the object to be heated (S22). The temperature correlation formula is stored in the non-volatile memory 104. The CPU 101 The system determines whether the estimated temperature has reached the specified temperature stored in RAM 103 (S23). If the specified temperature has not been reached (S23: NO), CPU 101 returns to S21 to acquire the thermistor temperature again and repeats the above process. If the specified temperature is reached at t3 (see Figure 3) (S23: YES), CPU 101 extinguishes the flame to stop combustion in left burner 5 (S24).

[0039] After the left burner 5 is extinguished, the CPU 101 initializes timer k to 0 and starts, as shown in Figure 7 (S26). The CPU 101 determines whether or not timer k has reached the waiting time W (S27). If the waiting time W has not yet been reached (S27: NO ), CPU101 returns to S27 and waits. If the waiting time W is reached at t4 (see Figure 3) (S27: YES), CPU101 acquires the thermistor temperature (S28). CPU101 uses the acquired thermistor temperature and the temperature correlation formula to estimate the estimated temperature of the hot water (S29).

[0040] As shown in Figure 3, at t4, the difference between the thermistor temperature and the actual temperature of the water is small, so the difference between the estimated temperature estimated by the temperature correlation formula and the actual temperature of the water is almost zero. Therefore, the CPU 101 displays the estimated temperature on the display unit 91 (S30). In this way, the CPU 101 can reduce the variation in the estimated temperature and display a reliable estimated temperature of the heated object on the display unit 91.

[0041] When the estimated temperature is displayed on the display unit 91, the estimated temperature is higher than the set temperature, so it gradually decreases over time. The CPU 101 determines whether the estimated temperature has reached the set temperature (S31). If it has not yet reached the set temperature (S31: NO), the CPU 101 returns to S28 and waits. During this time, the estimated temperature of the water in the container is correctly displayed on the display unit 91. This allows the user to know how much longer they need to wait until the desired set temperature is reached. If the estimated temperature reaches the set temperature of 80°C at t5 (S31: YES), the CPU 101 sounds a buzzer (S32) and terminates the process. Upon hearing the buzzer, the user can easily and quickly recognize that the water in the container has reached the set temperature of 80°C. Furthermore, since the buzzer sounds at the same time as the set temperature is reached, the discrepancy between the temperature of the food being cooked and the set temperature can be minimized. In addition, the user will not miss the timing when the water in the container reaches the set temperature.

[0042] In the above description, the left operation panel 19 is an example of the "setting unit" of the present invention. The waiting time table 20 shown in Figure 5 is an example of the "time information" of the present invention. The CPU 101 that executes the process in S30 in Figure 7 is an example of the "display control unit" of the present invention. The CPU 101 that executes the process in S24 in Figure 6 is an example of the "combustion stop unit" of the present invention. The CPU 101 that executes the process in S31 in Figure 7 is an example of the "determination unit" of the present invention. The CPU 101 that executes the process in S32 is an example of the "notification unit" of the present invention. The CPU 101 that executes the processes in S17 to S19 in Figure 6 is an example of the "calculation unit" of the present invention. The CPU 101 that executes the process in S20 is an example of the "decision unit" of the present invention.

[0043] As described above, the gas stove 1 of this embodiment comprises a left burner 5, a sensor 25, and a CPU 101. The left burner 5 burns a mixture of gas and air to form a flame. The sensor 25 has a built-in thermistor 5C and contacts the bottom of a container supported by the trivet, detecting the temperature of the bottom using the thermistor 5C. After a predetermined waiting time W has elapsed since the combustion of the left burner 5 stopped, the CPU 101 displays the estimated temperature of the heated object, estimated based on the detection result of the thermistor 5C, on the display unit 91.

[0044] During the time between the cessation of combustion in the left burner 5 and the elapsed of a predetermined waiting period W, heat transfer progresses from the part of the container heated by the flame to other parts (including the object being heated). As a result, even if the temperature of the contact portion of the sensor 25 is extremely high or extremely low at the start of combustion, for example, the temperature of the contact portion is smoothed out. Therefore, the gas stove 1 can reduce the variation in estimated temperature caused by the type of container, the heat output of the left burner 5, and the amount of the object being heated, and thus a reliable estimated temperature can be displayed on the display unit 91.

[0045] It should be noted that the present invention is not limited to the above embodiments, and various modifications are possible. The gas stove 1 in this embodiment is a built-in stove, but it may also be a tabletop stove. The number of stove burners is also not limited; for example, there may be one or two.

[0046] The waiting time W is determined by referring to the waiting time table 20 and using the inclination S and heat output. However, it may be determined by other methods as well. For example, the size and material of the container, the amount of water in the container, the heat output of the stove burner, etc., may be determined in detail from the inclination S, and the waiting time W may be determined based on the results of that determination.

[0047] When the estimated temperature reaches the set temperature (S31: YES), a buzzer sounds to notify, but it may also be notified by voice, for example, "The set temperature has been reached." [Explanation of Symbols]

[0048] 1. Gas stove 5 Left burner 5C Thermistor 19 Left control panel 20 Waiting Time Table 25 sensors 91 Display section 101 CPU S slope W Waiting time

Claims

1. A stove burner burns a mixture of gas and air to form a flame, A sensor is provided on the stove burner, which contacts the bottom of a container supported by a trivet and detects the temperature of the bottom, A display control unit displays the estimated temperature of the heated object inside the container, which is estimated based on the detection result of the sensor, on the display unit after a predetermined waiting time has elapsed since the combustion of the stove burner stopped and the temperature of the part in contact with the bottom of the sensor has been smoothed out. A gas stove characterized by having the following features.

2. A setting unit for setting the set temperature of the object to be heated, A combustion stop unit that stops the combustion of the stove burner when the estimated temperature reaches a specified temperature higher than the set temperature after the combustion of the stove burner has started, After the combustion stop unit stops the combustion of the stove burner, a determination unit determines whether the estimated temperature has reached the set temperature, The determination unit has a notification unit that notifies when it determines that the estimated temperature has reached the set temperature. The gas stove according to claim 1, characterized by having the following features.

3. The aforementioned waiting time is the time from when the combustion of the stove burner stops until heat transfer progresses in the container from the part heated by the flame of the stove burner to other parts. A gas stove according to claim 1 or 2, characterized by the above.

4. A storage unit that stores time information indicating the correspondence between the slope of the temperature change at the bottom detected by the sensor at the start of combustion of the stove burner and the waiting time, A calculation unit that calculates the slope of the temperature change at the bottom of the stove burner when combustion begins, Based on the slope of the temperature change at the bottom calculated by the calculation unit and the time information stored in the storage unit, a determination unit determines the waiting time. Having A gas stove according to claim 1 or 2, characterized by the above.

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