JPH08315976A - Induction heating cooker - Google Patents

Abstract

PURPOSE: To perform a cooking with a temperature control according to the pan or cooking method used by a user by providing a temperature control part having an initial set temperature memory part for storing a first set temperature and an initial set temperature changing part for allowing the user to change the first set temperature. CONSTITUTION: A user puts an iron pan 15 on a top plate 7 on a heating coil 4. In the initial state, a first set temperature in which +20 deg.C is added to a second set temperature is stored in an initial set temperature memory part 10. When a fly key, for example, of a control part is pushed, the first set temperature is inputted from the memory part 10 to a temperature control part 9. The control part 9 turns ON/OFF the switching element of an inverter part 5 according to the signal from an input detecting part 3 so that the power is the maximum output. The temperature control part 9 judges whether the bottom of the pan 15 is flat or warped through a pan judging part 13, and when the bottom is judged flat, the temperature control is performed with the first and second set temperatures, and when a warped pan is judged, only the second set temperature is employed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker having a temperature control function.

[0002]

2. Description of the Related Art In recent years, induction heating cookers have become widely used in general households and business due to their excellent features of safety, cleanliness and high efficiency.

A conventional induction heating cooker will be described below. FIG. 4 is a block diagram of a conventional induction heating cooker. In FIG. 4, 1 is an AC power supply, 2 is a rectifier circuit that converts the AC power supply 1 into DC, 3 is an input detection unit that detects an input from the AC power supply 1, 4 is a heating coil, 5 is a high-frequency current in the heating coil 4. Inverter unit 6 for supplying electric power, 6 is a control unit for controlling the inverter unit 5 so that the input from the AC power source 1 has a predetermined value, 7 is a top plate on which the pot 15 is placed, 8 is the temperature of the top plate 7. The temperature detecting unit 9 for measuring detects the output signal of the temperature detecting unit 8 and suppresses the input from the AC power source 1 when the measured temperature of the temperature detecting unit 8 reaches the first set temperature. The temperature control unit controls the input from the AC power supply 1 so as to stabilize near the lower second set temperature.

In the conventional induction heating cooker configured as described above, the temperature of the top plate 7 on which the pan 15 is placed is measured by the temperature detector 8 when the temperature of the cooked object is adjusted. The temperature of the cooked food was detected indirectly.
However, due to the difference in the rate of temperature rise between the food to be cooked such as oil and the bottom of the pan 15, the temperature of the pan 15 and the food to be cooked is about room temperature. Since the temperature rise is significantly delayed, the temperature control unit 9 suppresses the input from the AC power supply 1 when the temperature measured by the temperature detection unit 8 reaches the first set temperature, and the second temperature lower than the first set temperature is set.
The input from the AC power supply 1 is controlled so that it stabilizes near the set temperature, and the insufficient rise in the temperature of the cooking target at the start of heating is eliminated, and the accuracy of the temperature control of the cooking target at the time of temperature stabilization is improved. It was improving.

[0005]

However, in the above-mentioned conventional configuration, since the first set temperature is predetermined, the material to be cooked, the shape of the pan 15, the amount of the food to be cooked, and the bottom of the pan to be cooked differ. Since it is not possible to cope with the difference in temperature rising rate, and the temperature of the cooked food when the temperature measured by the temperature detection unit reaches the first set temperature varies depending on the type of the pan 15 and the amount of the cooked food, Depending on the pan 15 owned by the user and the cooking method performed by the user, it is difficult to stabilize the temperature of the object to be cooked at the temperature desired by the user.

The temperature of the food to be cooked depends on the top plate 7.
Since it is indirectly measured by measuring the temperature of the temperature detector 8, the temperature detector 8 on the top plate 7
In the pan 15 in which the pan bottom is warped so that the pan 15 does not come into contact with the temperature measurement point, the response of the temperature measured by the temperature detection unit 8 to the temperature rise of the pan bottom becomes slow, and thus the conventional temperature control method does not allow the food to be cooked. There was a problem of causing an abnormal temperature rise of the.

The present invention solves the above problems, and provides an induction heating cooker which allows a user to make adjustments for optimal temperature control depending on the type of pan and the amount of food to be cooked. This is the first purpose.

A second object of the present invention is to provide an induction heating cooker capable of appropriately and automatically changing the adjustment contents for the user's temperature control according to the type of pan.

It is a third object of the present invention to provide an induction heating cooker that automatically corrects and adjusts the temperature appropriately when the user determines that the adjustment content is not appropriate. The fourth object is to provide an induction heating cooker that automatically corrects and appropriately adjusts the temperature when the content of the data is inappropriate. Furthermore, the content of the temperature adjustment set by the user. The fifth object is to display and to facilitate confirmation.

[0010]

A first object of the present invention for achieving the above object is to provide a rectifying circuit for converting an AC power supply into a DC power supply, and an input detector for detecting an input from the AC power supply. A heating coil; an inverter unit for supplying a high-frequency current to the heating coil; a control unit for controlling the inverter unit so that the input from the AC power supply has a predetermined value; and a top plate on which a pot is placed. And a temperature detection unit that measures the temperature of the top plate, and an output signal of the temperature detection unit is detected, and when the measured temperature of the temperature detection unit reaches a first set temperature, the input from the AC power supply is suppressed. However, the temperature control unit controls the input from the AC power source so as to stabilize near a second set temperature lower than the first set temperature, and the temperature control unit stores the first set temperature. Initial setting A degree storage unit, in which a structure having the initial setting temperature changing unit that the initial setting of the first set temperature stored in the temperature storage unit user has changeable.

A second means for solving the problem of the present invention for achieving the above object is that the temperature control section determines whether or not the bottom state of the pan is flat from the measurement result of the temperature detection section. When the pan determination unit determines that the pan is flat, the temperature is controlled by the first set temperature and the second set temperature that are changed by the user, and the pan determination unit determines that the pan is a warp pan. If so, the first set temperature is invalidated and the temperature is controlled only by the second set temperature.

A third problem solving means of the present invention for achieving the above object is to provide the temperature control unit, when the data output from the initial set temperature storage unit is out of a predetermined range. Has a configuration in which predetermined data is used as the first set temperature.

A fourth problem solving means of the present invention for attaining the above object is that the initial set temperature storage section stores N identical data as the first set temperature, and the initial set temperature is changed. The section simultaneously changes the N pieces of data in the initial set temperature storage section, and the temperature control section determines whether the N pieces of changed data output from the initial set temperature storage section are valid or invalid. When it is determined to be valid, the valid data is set to the first set temperature, and when it is determined to be invalid, predetermined data or data before change is set to the first set temperature. Is.

Further, in order to achieve the above-mentioned object, the fifth problem solving means of the present invention is that, in the temperature control section, the user makes a predetermined input to the initial set temperature changing section and the first set temperature is set. When the mode for changing the temperature is entered, the display unit displays the mode or the first set temperature.

[0015]

According to the induction heating cooker of the present invention, by the first means for solving the above-mentioned problems, the temperature control unit controls the temperature from the AC power source when the temperature measured by the temperature detection unit reaches the first set temperature. The second that suppresses the input and is lower than the first set temperature
Since the input from the AC power supply is controlled so that it stabilizes near the set temperature of, the insufficient temperature rise of the cooked food at the beginning of cooking due to the difference in the temperature rise rate of the cooked food such as oil and the bottom of the pan is eliminated. In addition, it is possible to improve the accuracy of the temperature control of the cooking target when it is stable.

Further, the difference in temperature rising speed between the food to be cooked and the bottom of the pan differs depending on the material and shape of the pan, the amount of the food to be cooked and the like, and the response speed of the temperature measured by the temperature detection unit to the temperature rise at the bottom of the pan is also different. The temperature control unit is the first
Since it has an initial set temperature storage section for storing the set temperature of and a first set temperature changing section for allowing the user to change the first set temperature stored in the initial set temperature storage section, the pan owned by the user The user can change the first set temperature according to the material and shape of the, and the amount of the food to be cooked, and correct the temperature of the food to be stabilized near the desired set temperature.

Furthermore, since the changed first set temperature is stored in the initial set temperature storage unit, once the user changes the first set temperature, there is no need to change the first set temperature again and the same. Since cooking can be repeated under certain conditions, it is possible to provide a cooker with good operability.

According to the second means for solving the above-mentioned problems, the temperature control section has a pan determination section for determining the state of the bottom of the pan, and is used when the bottom of the pan is flat. Performs temperature control at a first set temperature set by the user and a second set temperature lower than the first set temperature, and when it is determined that the pan is a warpage, the first set temperature is invalid and the second set temperature is set. Since the temperature is controlled, the temperature measured by the temperature detection unit is set to the second value when the pan whose bottom is warped is used regardless of whether the first set temperature is changed by the user or the degree of change. When the temperature reaches the set temperature, the input from the AC power supply can be suppressed to prevent an abnormal temperature rise of the cooked food, which tends to occur when the pan is warped.

Further, according to the third problem solving means for achieving the above object, when the data output from the initial setting temperature storage unit is outside the predetermined range, the predetermined data is set to the first setting. Since the temperature is set, when abnormal change data is input, it can be ignored and the predetermined data can be set as the first set temperature. Therefore, when data is stored in the initial set temperature storage unit or data is output from the initial set temperature storage unit, data that is significantly different from the first set temperature changed by the user due to the influence of noise or the like is generated. First
It is possible to prevent the temperature control from being input as the set temperature of and the temperature control being executed based on it.

According to the fourth problem solving means for achieving the above object, the initial set temperature storage section stores N identical data as the first set temperature, and the initial set temperature changing section stores the initial set temperature. Change the N data of the part at the same time,
The temperature control unit determines whether N pieces of data output from the temperature storage unit are valid or invalid. When it is determined to be valid, the valid data is set as the first set temperature, and when it is determined to be invalid, the data is set in advance. First the fixed data or the data before change
Since the set temperature is set to, the reliability of the data output from the initial set temperature storage unit can be determined, and it is possible to reduce erroneous temperature control due to malfunction of the circuit due to external noise or the like. .

According to the fifth problem solving means for achieving the above object, the temperature control unit enters a mode in which the user makes a predetermined input to the initial set temperature changing unit to change the first set temperature. In this case, the display shows that the mode has been entered or the first set temperature is displayed, so that the user confirms that the mode is the setting change mode, or tries to change the current setting. The recognition of the first set temperature can be ensured, and the work of changing the first set temperature can be easily performed.

[0022]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is an AC power supply, 2 is a rectifier circuit for converting the AC power supply 1 into DC, 3 is an input detector for detecting an input from the AC power supply 1, 4 is a heating coil, 5 is a heating coil. An inverter unit that supplies a high-frequency current, 6 is a control unit that controls the inverter unit 5 so that the input from the AC power supply 1 has a predetermined value, 7 is a top plate on which the pot 15 is placed, and 8 is a top plate 7. The temperature detection unit 9 for measuring the temperature detects the output signal of the temperature detection unit 8 and suppresses the input from the AC power supply 1 when the measured temperature of the temperature detection unit 8 reaches the first set temperature, A temperature control unit that controls the input from the AC power supply 1 so as to stabilize near a second set temperature lower than the set temperature, 10 is an initial set temperature storage unit that stores the first set temperature, and 11 is an initial set temperature storage. First setting stored in section 10 Initial setting temperature changing unit that the user was able to change the degree, 12 operation unit for operating the cooking setting, 1
3 is a pan determination unit that determines whether the bottom of the pan 15 is flat or warped based on the measurement result of the temperature detection unit 8 and outputs the determination result to the temperature control unit 9, and 14 is the first set temperature. It is a display unit for displaying the change mode.

The operation of the induction heating cooker configured as above will be described. A user places an iron pan 15 on a top plate 7 installed above the heating coil 4, and oil is put inside the pan 15 as a food to be cooked. Further, in the initial state, the first set temperature is the second set temperature plus + 20 ° C.
I remember. The initial setting storage unit 10 is configured to store three identical data. Here, the operation unit 1
When the 2 tempura key is pressed, the first set temperature is input from the initial set temperature storage section 10 to the temperature control section 9. If at least two of the three input data are the same and the data is within a predetermined range, the temperature control unit 9 uses the data input from the initial setting temperature storage unit as the first set temperature, and all the three data. If the values are different or if the data is out of the predetermined range, it is the predetermined data.
The set temperature of + 20 ° C. is set as the first set temperature. Next, the temperature control unit 9 outputs the maximum power (2K in this embodiment).
A signal is output to the control unit 6 so as to be W). Control unit 6
Turns on and off the switching element of the inverter unit 5 so that the power becomes maximum output according to the signal from the input detection unit 3, and changes the high frequency output by the resonance current generated in the heating coil 4 and the resonance capacitor of the inverter unit 5. Let
When the pan 15 is heated by the high frequency output, the temperature of the pan bottom, the oil, and the top plate 7 rises. The temperature detector 8 measures the temperature of the top plate 7 using a thermistor, and the pot determiner 13 determines whether the pot bottom of the pot 15 is flat or warped by the temperature rising speed of the measured temperature of the temperature detector 8. . The temperature control unit 9 controls the temperature at the first set temperature and the second set temperature when the pan determination unit 13 determines that the pan bottom is flat, and invalidates the first set temperature when it is determined that the pan is warped. The temperature is controlled only by the second set temperature. This pot 1
Since 5 is determined to be flat by the pan determination unit 13, when the temperature of the temperature detection unit 8 reaches the first set temperature, the temperature control unit 9 signals the control unit 6 so that the high frequency output becomes 0W. Is output, and the buzzer informs that the temperature of the cooking target has reached the temperature desired by the user. Next, the temperature control unit 9
Output is 2KW, 1.2K from the measurement result of the temperature detector 8.
A signal is output to the control unit 6 in any of six stages of W, 800W, 480W, 370W, and 0W to stabilize the temperature measured by the temperature detection unit 8 near the second set temperature.

FIG. 2 shows changes in temperature of the pan bottom, the oil and the temperature measured by the temperature detection unit 8 from the start of cooking. The oil temperature has a slower rate of temperature rise than the pan bottom temperature. The insufficient temperature rise of oil is resolved by the set temperature. However, since the shape of the bottom of the pan is slightly warped, the response of the temperature measured by the temperature detector 8 to the rise in the temperature of the bottom of the pan is delayed, and the temperature measured by the temperature detector 8 reaches the first set temperature (170 ° C. in FIG. 2). When the oil temperature rises, the temperature of the oil is the temperature that the user desires (Fig. 2
The temperature is higher than 180 ℃ (about 1 in Fig. 2)
The buzzer is notified at 90 ° C. So the user
Based on the measurement data of FIG. 2, the change of the first set temperature corresponding to the pan 15 is changed by the following procedure, and the temperature change as shown in FIG. 3 is adjusted.

A predetermined key input is made from the initial set temperature changing section 11 to shift to a mode for changing the set temperature. The first set temperature is the second set temperature + 0 ° C, + 10 ° C, + 20 ° C
It can be changed in three steps. When the mode is changed, a display indicating the set temperature change mode is displayed on the display unit 14, and the currently set first set temperature is displayed. From FIG. 2, the measured temperature of the temperature detection unit 8 is the first set temperature (see FIG.
Temperature of 170 ° C), the oil temperature is about 10 ° C higher than the temperature desired by the user (180 ° C in Fig. 2). The set temperature is changed by the initial set temperature changing unit 11 so as to be the second set temperature + 10 ° C. At this time, the display of the first set temperature on the display unit 14 is changed from the second set temperature + 20 ° C. to the display of the second set temperature + 10 ° C.
In addition, the initial set temperature changing unit 11 includes the initial correction temperature storage unit 10
At the same time, the same three data stored in the same are changed, and the newly changed same three data are stored in the initial set temperature storage unit 10. The initial setting temperature storage unit 10 continues to store the data as the first setting temperature unless the initial setting temperature changing unit 11 changes the data.

When the first set temperature is changed by the above operation and then the heating is performed again under the same cooking condition, the temperature change of the pan bottom, the oil, and the temperature measured by the temperature detector 8 from the start of cooking As shown in FIG. 3, when the temperature measured by the temperature detector 8 reaches the first set temperature (160 ° C. in FIG. 3) and the buzzer is notified, the oil temperature is the temperature desired by the user (in FIG. 3). 1
A stable state is achieved near (80 ° C). Since the changed first set temperature is stored in the initial set temperature storage unit 10, it is not necessary to change the first set temperature again, and it is possible to repeatedly cook under the same conditions.

As described above, according to this embodiment, the temperature controller 9 suppresses the input from the AC power source 1 when the temperature measured by the temperature detector 8 reaches the first set temperature, and the first set temperature is set. Since the input from the AC power supply 1 is controlled so as to stabilize near the second set temperature lower than the temperature, the cooking target such as oil and the pan 1
It is possible to eliminate the insufficient temperature rise of the object to be cooked at the beginning of cooking due to the difference in the rate of temperature rise of the pan bottom of item 5, and to improve the accuracy of the temperature control of the object to be cooked when stable.

Further, the temperature control unit 9 stores an initial set temperature storage unit 10 for storing the first set temperature and an initial set temperature stored in the initial set temperature storage unit 10 so that the user can change the initial set temperature. Since the set temperature changing unit 11 is provided, the user changes the first set temperature according to the material and shape of the pan 15 owned by the user and the amount of the food to be cooked, and the temperature of the food to be cooked is set to the desired setting. It can be corrected to be stable near the temperature.

Further, since the changed first set temperature is stored in the initial set temperature storage unit 10, once the user changes the first set temperature, there is no need to change the first set temperature again. Since cooking can be repeated under the same conditions, a cooker with good operability can be provided.

Further, the temperature control unit 9 has a pan determination unit 13 for determining the state of the bottom of the pan 15, and when the bottom of the pan 15 is determined to be flat, the first set temperature and the first set temperature set by the user. 1
Performs temperature control at a second set temperature lower than the set temperature of
When it is determined that the pan is a warp pan, the first set temperature is invalidated and the temperature is controlled at the second set temperature. Therefore, regardless of whether the first set temperature is changed by the user or the degree of change, the pot bottom When using the warped pan 15, when the temperature measured by the temperature detection unit 8 reaches the second set temperature, the input from the AC power supply is suppressed to cause an abnormality in the cooked food that tends to occur during the warped pan. Temperature rise can be prevented.

If the data output from the initial set temperature storage unit 10 is outside the predetermined range, the predetermined data is set as the first set temperature, so that abnormal change data is input. Ignore it and set predetermined data first
Can be set temperature. Therefore, when data is stored in the initial set temperature storage unit 10 or when data is output from the initial set temperature storage unit 10, it is significantly different from the first set temperature changed by the user due to the influence of noise or the like. It is possible to prevent the data from being input as the first set temperature and the temperature control being executed based on the data.

Further, the initial set temperature storage unit 10 stores N pieces of the same data as the first set temperature, and the initial set temperature changing unit 11 changes N pieces of data in the initial set temperature storage unit 10 at the same time. The control unit 9 determines whether N pieces of data output from the initial set temperature storage unit 10 are valid or invalid. When it is determined that the data is valid, the validated data is set as the first set temperature and is determined to be invalid. In this case, since the predetermined data or the data before the change is used as the first set temperature, it is possible to judge the reliability of the data output from the initial set temperature storage unit 10, and malfunction of the circuit due to external noise or the like. As a result, it is possible to reduce erroneous temperature control.

When the user enters a mode in which the user makes a predetermined input to the initial set temperature changing section 11 to change the first set temperature, the temperature control section 9 indicates that the display section 14 has entered that mode. Is displayed or the first set temperature is displayed, so it is necessary to confirm that the user is in the setting change mode and to make sure the first set temperature that is currently set or is about to be changed. Therefore, the work of changing the first set temperature can be easily performed.

[0035]

As described above, according to the present invention, when the output signal of the temperature detecting section is detected and the measured temperature of the temperature detecting section reaches the first set temperature, the input from the AC power supply is suppressed and the first A temperature control unit that controls an input from the AC power source so as to stabilize near a second set temperature lower than the set temperature, the temperature control unit includes an initial set temperature storage unit that stores the first set temperature, and an initial set temperature storage unit. Since there is an initial setting temperature changing unit that allows the user to change the first setting temperature stored in the setting temperature storage unit, it can be used according to the material and shape of the pot owned by the user and the amount of the food to be cooked. Can change the first set temperature,
In addition, since the changed first set temperature is stored in the initial set temperature storage unit, once the user changes the first set temperature, there is no need to change the first set temperature again, and the user can use it. It is possible to perform repeated cooking with optimal temperature control according to the pot and cooking method, and it is possible to provide an induction heating cooker with good operability and improved cooking performance.

Further, it has a pan determination unit for determining the state of the pan bottom of the pan, and when the pan bottom of the pan is determined to be flat, temperature control is performed by the first set temperature and the second set temperature set by the user. If it is determined that the pan is warped, the temperature is controlled only by the second set temperature, so that the pan with the bottom of the pan warped regardless of whether the first set temperature is changed by the user or the degree of change. When using, by suppressing the input from the AC power supply when the measured temperature of the temperature detection part reaches the second set temperature, and preventing an abnormal temperature rise of the cooked food that is likely to occur during the warping pan. It is possible to avoid a danger such as oil ignition and provide a safer induction heating cooker.

When the data output from the initial set temperature storage unit is outside the predetermined range, the predetermined data is used as the first set temperature, and when abnormal change data is input. When the data is stored in the initial set temperature storage unit or the data is output from the initial set temperature storage unit, noise or the like can be ignored. Due to the influence of, the first data is significantly different from the first set temperature changed by the user.
Since it is possible to prevent the temperature control from being input as the set temperature of, and the temperature control is executed based on the set temperature, it is possible to provide an induction heating cooker with few malfunctions in the temperature control.

Further, a plurality of identical data are stored in the initial set temperature storage section, the initial set temperature changing section simultaneously changes a plurality of data in the initial set temperature storage section, and the temperature control section stores the initial set temperature storage. The validity is determined according to a combination of a plurality of data output from the unit, and when it is determined to be invalid, predetermined data is used as the first set temperature, so that the initial set temperature storage unit It is possible to judge the reliability of the data output from, and reduce the execution of incorrect temperature control due to circuit malfunction due to external noise, etc., so induction heating cooking with high reliability in temperature control Can be provided.

Further, according to the present invention, when the user enters a mode for changing the first set temperature by making a predetermined input to the initial set temperature changing section, a display indicating that the mode has been entered is displayed on the display section. Alternatively, since the first set temperature is displayed, it is possible to confirm that the user is in the setting change mode state or visually recognize the currently set data or the first set temperature to be changed. Since it is possible to easily perform the work of changing the first set temperature, it is possible to provide the induction heating cooker in which the user can change the setting with peace of mind.

[Brief description of drawings]

FIG. 1 is a block diagram showing an induction heating cooker according to an embodiment of the present invention.

FIG. 2 is a diagram showing temperature changes of a pan bottom, oil, and a temperature detection unit during cooking.

[Fig. 3] Similarly, the bottom of the pot during cooking after the first set temperature change,
Diagram showing changes in temperature of oil and temperature detector

FIG. 4 is a block diagram showing a conventional induction heating cooker.

[Explanation of symbols]

 1 AC power supply 2 Rectifier circuit 3 Input detection unit 4 Heating coil 5 Inverter unit 6 Control unit 7 Top plate 8 Temperature detection unit 9 Temperature control unit 10 Initial setting temperature storage unit 11 Initial setting temperature changing unit 12 Operation unit 13 Pan determination unit 14 Display 15 pan

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hirofumi Noma 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Yuji Fujii, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Daizo Ogata 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Akira Kataoka 1006 Kadoma, Kadoma City Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A rectifier circuit for converting an AC power supply into a DC current,
An input detection unit that detects an input from the AC power supply, a heating coil, an inverter unit that supplies a high-frequency current to the heating coil, and a control unit that controls the inverter unit so that the input from the AC power supply has a predetermined value. Control unit, a top plate on which a pan is placed, a temperature detecting unit that measures the temperature of the top plate, and an output signal of the temperature detecting unit is detected to set the temperature measured by the temperature detecting unit to a first setting. When the temperature is reached, the input from the AC power supply is suppressed, and a temperature control unit is provided to control the input from the AC power supply so as to be stable near a second set temperature lower than the first set temperature, The control unit includes an initial set temperature storage unit that stores the first set temperature, and an initial set temperature change unit that allows a user to change the first set temperature stored in the initial set temperature storage unit. Invitation Heating cooker. 2. The temperature control unit includes a pan determination unit that determines whether or not the bottom of the pan is flat based on the measurement result of the temperature detection unit, and stores the initial set temperature when the pan determination unit determines that the pan is not a flat pan. The induction heating cooker according to claim 1, wherein the second set temperature is stored in the section. 3. The temperature control unit sets predetermined data as the first set temperature when the data output from the initial set temperature storage unit is outside the predetermined range. The induction heating cooker described. 4. The initial set temperature storage section has a plurality of identical data, the initial set temperature changing section simultaneously changes a plurality of data in the initial set temperature storage section, and the temperature control section stores the initial set temperature storage. 4. The validity is determined according to a combination of a plurality of data output from the unit, and when determined to be invalid, predetermined data is used as the first set temperature. The induction heating cooker according to item 1. 5. The induction heating cooker according to claim 1, further comprising a display unit that displays the first set temperature.