JPH07192862A - Induction heating cooker - Google Patents

Abstract

PURPOSE:To maintain the former operating condition of an induction heating unit during a predetermined time after the equipment operating mode is changed to the initial mode by an automatic heating finishing function in an induction heating cooker. CONSTITUTION:A mode holding means 55 periodically renews the input signal from a mode control means 50, stores the holding signal, and while outputs the holding signal to an induction heating unit control means, and during a predetermine time after the input of the signal from a timer means 54, the mode holding means 55 does not renew the holding signal, and outputs it. Consequently, even in the case where the timer means 54 finishes the count and the display is changed to the initial mode during the time of fry-cooking under the temperature control mode and the temperature stabilized condition, an input means 57 is operated within a predetermined time to return the equipment operating mode to the original temperature adjusting mode, and the cooking is quickly re-started.

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 used in general households.

[0002]

2. Description of the Related Art In recent years, induction heating cookers have become popular in general households because of their excellent features such as safety, cleanliness and high efficiency. The induction heating cooker has a structure in which a load pan magnetically coupled to the heating coil is induction-heated by applying a high-frequency current of several tens KHz to the heating coil which is wound in a spiral plane. The high frequency current is generated by opening and closing the switching means in the induction heating section.

A conventional induction heating cooker will be described below with reference to FIG. In FIG. 10, 1 is an AC power supply, 2 is a power switch, 3 is an induction heating unit, and a rectifier 3
0, heating coil 31, switching means 32, and inverter circuit 33.

The induction heating section control means 4 controls the opening / closing of the switching means 32, and controls the conduction time of the switching means 32 to control the current applied to the heating coil 31. Further, the induction heating unit control means 4 indirectly detects the temperature of the food to be cooked in the load pan 7 based on the input signal from the temperature sensitive element 6, and further, the abnormality of the inverter circuit 33, the temperature sensitive element 6 and the like. When it is detected, the output of the induction heating unit 3 is stopped and other measures are taken.

In the operation unit 5, the input means 51 is usually composed of a tact switch or the like, and is used for each heating mode (heating key), temperature control mode (temperature control key), and setting output or temperature change in each mode. A switch is provided for each of the (UP key and DOWN key).

The mode control means 50 controls the heating stopped state (hereinafter referred to as the initial mode), the heating state by the constant output of the induction heating section 3 (hereinafter referred to as the heating mode), the temperature detected by the temperature sensing element 6 and the set temperature. A plurality of equipment operation modes in an automatic temperature control state (hereinafter referred to as a temperature control mode) that automatically adjusts the output of the induction heating unit 3 according to the relationship, and a heating mode from “1” for weak heating to “7” for strong heating. The seven setting outputs and the temperature control mode have settings relating to the device operating state such as seven setting temperatures from low temperature “1” to high temperature “7”. Then, the mode control means 50 changes the setting based on the input signal from the input means 51, controls the display means 52 to display the setting, and controls the notification means 53 to notify the buzzer as necessary. I do.

The timer means 54 possesses one counter and outputs a signal indicating the end of counting when it finishes counting for a predetermined time, and initializes the counter based on the input signal from the input means 51.

The operation of the conventional induction heating cooker configured as described above will be described with reference to FIGS. 11, 12, 13, and 14. As shown in FIG. 11, in step 31, the input means 5 including a plurality of switches is used.
Based on the input signal from 1, the switch currently on is specified. It should be noted that in order to prevent the influence of noise, ON / OFF is determined when the state of the switch is maintained for a predetermined time or longer. When a plurality of switches are turned on at the same time, all the switches are invalid. If it is the heating mode, the process in the heating mode is performed in step 33, if it is the temperature control mode, the process in the temperature control mode is performed in step 35, and if neither, the process in the initial mode is performed in step 36. To do.

As shown in FIG. 12, the switch specified in step 31 of FIG. 11 is referred to. When the heating key is turned on, the equipment operation mode is changed from the initial mode to the heating mode and the set output "7" in step 42. If the temperature control key is turned on, the temperature control mode is changed to the set temperature "5" at step 44. As described above, the setting output “7” or the setting temperature “5” is adopted as the initial setting because it is the most frequently used among the settings.
Further, the set output or the set temperature is changed when the UP key or the DOWN key is turned on in the heating mode process or the temperature control mode process shown in FIG.

As shown in FIG. 13, when the power switch 2 is turned on and the operation of the device is started, the mode control means 50 sets the device operation mode to the initial mode indicating the heating stopped state and puts the device in the heating stopped state. . Here, when the temperature control key is turned on and the temperature control mode indicating the automatic temperature control state is selected, the mode control means 50 changes the device operation mode from the initial mode to the temperature control mode and the set temperature "5" in step 44 of FIG. In addition, the display unit 52 displays the temperature control mode and the set temperature “5”, and outputs a signal indicating the temperature control mode and the set temperature “5” to the induction heating unit control unit 4.
Then, by inputting this signal, the induction heating section control means 4 automatically adjusts the output of the induction heating section 3 according to the relationship between the temperature detected by the temperature sensitive element 6 and the set temperature.

Here, the temperature control mode will be described in detail. The temperature control mode is intended for a fried food dish using oil such as a tempura dish, and automatically controls the output of the induction heating unit 3 so that the temperature of the oil will be in accordance with the cooking situation. Further, this mode is based on, for example, a temperature rising state in which the temperature of the oil in the load pan 7 is raised from a low temperature state to a set temperature all at once, and a temperature detected by the temperature sensing element 6 so that the oil temperature maintains the set temperature. From several sequences such as a temperature stable state in which the output of the induction heating section 3 is automatically controlled, and a load correction state in which the output of the induction heating section 3 is increased by detecting a rapid decrease in the oil temperature with the temperature sensing element 6. It is made up. Further, in the temperature rising state, if the oil in the low temperature state is heated at a high output all at once, the degree of increase in the temperature of the oil tends to be delayed as compared with the degree of increase in the temperature detected by the temperature sensing element 6. It is devised such as performing an initial correction process to make the temperature somewhat higher than the set temperature set by the user.

Then, the induction heating section control means 4 controls the sequence, and when the equipment operation mode is changed from the initial mode to the temperature control mode based on the input signal from the mode control means 50, the temperature is raised in the sequence. When the temperature is initialized and the predetermined condition is satisfied, the sequence is changed from the temperature rising state to the temperature stable state. At this time, the induction heating section control means 4 outputs a signal indicating the sequence change to the control section 5, and inputs this signal to input the mode control means 50.
Controls the display means 52 and the notification means 53 to display on the display means 52 for notifying the sequence change, and the notification means 53 gives a buzzer notification indicating the sequence change.
As a result, a person who uses the device knows that the temperature of the oil has reached a predetermined temperature, and starts cooking such as putting the food to be cooked into the oil.

Further, at the same time when the mode control means 50 changes the equipment operation mode to the temperature control mode, the timer means 54 simultaneously.
Initializes the counter based on the input signal from the input means 51 and starts the counting operation. Then, the predetermined time T1
After counting, a mode initialization signal for changing the device operation mode to the initial mode is output to the mode control means 50. By inputting this signal, the mode control means 50 changes the device operation mode to the initial mode, the display means 52 displays a display indicating the initial mode, and the notification means 53 issues a timer notification indicating the end of automatic heating after the elapse of a predetermined time T1. . In addition, the mode control means 50 outputs a signal indicating the initial mode to the induction heating part control means 4 immediately after changing to the initial mode, and the induction heating part control means 4 immediately inputs the signal to output the output of the induction heating part 3. Stop. This is because, for example, if the input means 51 is operated and then the induction heating unit 3 is left as it is without stopping the output after the fried food is cooked, the temperature of the oil may rise too high and the ignition may occur. The automatic heating termination function of 3 is a protective measure to prevent oil ignition. Further, the automatic heating end function is unique to the device mainly because the time until the end of heating is constant, but the device that uses the device assuming a long-time stewed cooking operates the input means 51 to end the heating. A timer heating function is also conceivable, in which the predetermined time T1 up to is set and the display means 52 displays the remaining time until the end of heating.

FIG. 14 is a diagram showing the change of the device operation mode during the timer notification. As shown in FIG. 14, when the notification means 53 is performing the timer notification indicating that the automatic heating end function works to automatically change the device operation mode to the initial mode, the temperature control key is turned on again to operate the device. When the mode is changed from the initial mode to the temperature control mode, the mode control means 50 changes the device operation mode to the temperature control mode, the set temperature "5" in step 44 of FIG.
A signal indicating the set temperature "5" is output to the induction heating unit control means 4, and by inputting this signal, the induction heating unit control means 4 initializes the sequence to the temperature rising state and newly uses the temperature sensitive element 6. The output of the induction heating unit 3 is automatically adjusted according to the detected temperature.

[0015]

However, in the above-mentioned conventional configuration, when the timer means 54 finishes counting the predetermined time T1, the food to be cooked is put into the oil and the fried food is cooked. Regardless, mode control means 50
Changes the equipment operation mode to the initial mode indicating the output stop of the induction heating unit 3, and the person who uses the equipment cannot continue the fried food cooking.

Further, even if the input means 51 is operated again to return the equipment operation mode to the temperature control mode and restart the fried food cooking, the induction heating section control means 4 once inputs the signal indicating the initial mode and then the temperature control mode. Signal is input, the sequence is initialized to the temperature rising state, and the induction heating unit control means 4 raises the target temperature somewhat higher than the set temperature by the initial correction processing in the temperature rising state described in the conventional example. Since the notification indicating that the oil temperature has reached the set temperature is delayed, the person using the equipment must wait for the resumption of frying cooking during that time, and the oil temperature at the time of notification is set. There is a problem that the temperature becomes higher than the temperature by the amount of the initial correction process, which adversely affects the quality of the fried food.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above-mentioned conventional problems. It is a first object of the present invention to maintain the previous operating state of the induction heating unit for a predetermined time after changing the device operation mode to the initial mode by the automatic heating termination function. And

Further, in addition to the first object, a second object is to be able to return to the previous equipment operating state by a simple operation after the operation of the automatic heating end function.

Further, in addition to the first object, the third object is to simplify the structure of the equipment by omitting the operation of measuring for a predetermined time after changing to the initial mode by the action of the automatic heating end function. To do.

[0020]

In order to achieve the first object, an induction heating cooker according to the present invention controls an induction heating section for induction heating a body to be heated and an ON / OFF of an output of the induction heating section. Induction heating section control means for, and an operation section for controlling the output of the induction heating section control means, the operation section,
Input means for starting induction heating by the induction heating section, timer means for timing by the output of the input means, mode control means for setting the output mode of the induction heating section by the output of the input means, and the timer means For a predetermined time after the end of the time counting by the above, the mode holding means for performing the induction heating in the output mode during the time counting is provided.

In order to achieve the second object, the mode control means changes the output mode when the output mode by the signal from the mode holding means and the output mode by the signal from the input means match. And

Further, in order to achieve the third object, there is provided an informing means for producing a sound by the output of the mode control means,
It is assumed that the induction heating is performed in the output mode during timing during a period in which there is an output from the notification means after the timer means finishes the timing.

[0023]

According to the first means for solving the problems, the mode holding means does not update the holding signal storing the input signal from the mode controlling means for a predetermined time after the signal is inputted from the timer means, so that the timer means counts. The mode holding means can hold the device operating mode and the device operating state such as the set output or the temperature before the automatic heating ending function in which the device finishes heating and automatically ends heating. The mode holding unit outputs the holding signal to the induction heating unit control unit, and the induction heating unit control unit controls the induction heating unit according to the input signal, so that the automatic heating is performed within a predetermined time after the timer unit finishes counting. The induction heating unit control means can control the induction heating unit according to the operating state of the device before the termination function operates.

Therefore, the timer means operates the input means within a predetermined time after the end of counting to return the equipment operation mode to the mode before the automatic heating end function operates,
If the set output or set temperature of the initial setting is different from that before the automatic heating end function operates, if the input means is further operated to change to the previous set output or set temperature, the mode holding means controls the induction heating unit. The signal output to the means becomes the same before and after the count of the timer means ends, and the induction heating unit control means performs the induction heating with the equipment operation mode, sequence and set output or the set temperature before the automatic heating end function operates. The control of the department can be continued.

That is, for example, even if the timer means finishes counting while the fried food is being cooked in the temperature control mode to enter the initial mode indicating the device output stop state, the original temperature control mode can be returned within the predetermined time. For example, cooking can be restarted immediately without waiting until the temperature stabilizes again, and the oil temperature can be prevented from rising by the amount of the initial correction processing.

According to the second problem-solving means, the mode holding means holds the equipment operation mode and the set output or the equipment operation state of the set temperature before the automatic heating end function operates for a predetermined time after the signal is input from the timer means. However, since the holding signal is output to the mode control means, the mode control means can refer to the previous device operating state within a predetermined time after the action of the automatic heating end function. When the mode control means changes the equipment operation mode from the initial mode to another mode based on the input signal from the input means, the equipment operation mode of the change destination and the equipment operation mode according to the input signal from the mode holding means match. In this case, since the setting output or the setting temperature is changed based on the input signal from the mode holding means, it is possible to return to the completely same state as before the automatic heating end function operates by operating the input means only once.

That is, compared with the first problem solving means, it is possible to save the labor of operating the input means a plurality of times to restore the set output or the set temperature to the original state, and to make the device more convenient. be able to.

Further, according to the third problem solving means, the mode holding means prohibits the updating of the holding signal based on the input signal from the notifying means, and the holding signal is controlled by the induction heating unit while the updating of the holding signal is prohibited. Since the information is output to the means, the induction heating part control means can control the induction heating part according to the device operating state before the automatic heating end function operates while the notification means is performing the timer notification. Therefore, if the notifying means operates the input means until the timer notifying ends and returns the device operation mode, the set output or the set temperature to the one before the automatic heating end function operates,
The signal output to the induction heating unit control unit by the mode holding unit becomes the same before and after the count of the timer unit ends,
The induction heating unit control means can continue the control of the induction heating unit with the device operation mode, sequence, and set output or set temperature before the automatic heating end function acts.

That is, as compared with the mode holding means of the first problem solving means, the counting operation for measuring the time for prohibiting the update of the holding signal can be omitted, and the automatic heating ends with a simpler configuration. It is possible to realize the device operation state restoration processing when the function acts.

[0030]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. It should be noted that components having the same functions as those of the conventional example are designated by the same reference numerals and the description thereof is omitted. The characteristic configuration of the present embodiment is that the input signal from the mode control means 50 is periodically updated in the operating section 5 and stored as a holding signal to output the holding signal to the induction heating section control means 4 and a timer. This means that a mode holding means 55 for newly outputting the holding signal for a predetermined time T2 after inputting the signal from the means 54 is provided.

The operation of the induction heating cooker configured as described above will be described with reference to FIGS. 2, 3, and 4. As shown in FIG. 2, when the power switch 2 is turned on and the AC power source 1 is applied to the device, the mode holding means 55
Starts to work. First, in step 1, the timer means 54
The input judgment of the mode initialization signal for changing the device operation mode to the initial mode is performed. When the mode initialization signal is not input, the mode holding means 55 inputs a signal indicating the setting of the device operation mode or the like from the mode control means 50 in step 2, and saves this input signal as a holding signal in step 3. After that, the holding signal is output to the induction heating unit control means 4 in step 4, and the process returns to the mode initialization signal input determination state of step 1.

However, when the mode initialization signal is input, the mode holding means 55 initializes the counter for measuring the predetermined time T2 in step 5, and then executes the process of step 6. First, after waiting for a certain period of time, the holding signal is output to the induction heating unit control means 4 to increment the counter by one. Then, this process is repeated until the value of the counter exceeds a predetermined value or the carry occurs, and when the above condition is satisfied, the counting operation is terminated and the mode initialization signal input determination state which is step 1 is entered. Return. That is, the measurement of the predetermined time T2 is realized by the product of the processing time per processing and the number of counts. Further, during the period of step 6 from the start of the counting operation to the end of the counting operation, the mode holding means 55 does not update the holding signal, so the setting of the device operation mode before starting the counting operation is guided. Output to the heating unit control means 4.

Further, as shown in FIG. 3, the timer means 5
When 4 finishes counting the predetermined time T1, the mode control means 50 changes the device operation mode from the temperature control mode showing the automatic temperature adjustment function to the initial mode showing heating stop, and the display means 52 displays the initial mode. Since the induction heating unit control means 4 inputs a signal indicating the temperature control mode which is the setting before the change from the mode holding means 55 within a predetermined time T2 after the timer means 54 finishes counting, the operation according to the temperature control mode. After a lapse of a predetermined time T2, a signal indicating the initial mode is input from the mode holding unit 55 to stop the output of the induction heating unit 3.

As shown in FIG. 4, within a predetermined time T2 after the timer means 54 has finished counting, the input means 51 is operated to restore the settings such as the device operation mode to those before the timer means 54 finished counting. Then, the signal input by the induction heating unit control unit 4 from the mode holding unit 55 becomes the same before and after the count of the timer unit 54 ends, and the induction heating unit 3 can be controlled by consistent setting and sequence of the device operation mode and the like. it can.

With the above configuration, the timer means 5
Even if 4 finishes counting and the mode control means 50 changes the settings such as the device operation mode to the initial mode, the predetermined time T
If the input means 51 is operated within 2 to restore the original setting again, the induction heating unit control means 4 can continue the same setting and sequence of the device operation mode and the like as before the timer means 54 finished counting. That is, even if the timer means 54 finishes counting and the mode control means 50 changes the equipment operation mode to the initial mode while the person who uses the equipment is cooking deep-fried food in the temperature control mode, the induction heating part control is performed. If the means 4 is operated for a predetermined time T2 to maintain the sequence before the end of the counting and the input means 51 is operated to return to the temperature control mode which is the original equipment operation mode and the predetermined set temperature, the temperature stable state is restored. The fried food can be restarted immediately without waiting until, and the oil temperature can be prevented from increasing by the amount of the initial correction process.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIG. The difference from the first embodiment is that the mode holding means 55 is configured to output the holding signal to the mode controlling means 57 in addition to the induction heating section controlling means 4, and is newly used as the mode holding means 56. When the device operation mode is changed from the initial mode to another mode based on the input signal from the input unit 51, the device operation mode according to the input signal from the mode holding unit 56 and the changed device operation mode match. Indicates the set output or the set temperature based on the mode holding means 56.
That is, the setting output or the setting temperature is changed by the input signal from.

In the first embodiment, if the automatic heating end function operates while the device is in use with the set output or the set temperature different from the initial setting, the device operating state before the automatic heating end function operates is restored. In order to operate the input device 51, it is necessary to select the previous device operation mode and then further operate the input device 51 to change the set output or the set temperature.

The present invention is to improve such a point, and the induction heating cooker configured as described above,
The operation will be described with reference to FIG. First, consider the case where the automatic heating end function is not operating in the initial mode, or the predetermined output time T2 has already passed after the automatic heating end function is activated. At this time, the mode holding means 56 stores the input signal from the mode control means 57 as a holding signal and outputs the holding signal to the mode control means 57 as already described in the first embodiment. The means 57 receives the signal relating to the initial mode from the mode holding means 56. Then, when the heating key among the plurality of switches constituting the input means 51 is turned on, it is determined in step 12 that the person who uses the device has turned on the heating key as shown in FIG. Change the mode from initial mode to heating mode. In this case, since the contents of the heating mode, which is the changed device operation mode, and the initial mode, which is the device operation mode based on the input signal from the mode holding means 56, are different, the setting output in step 13 is the setting output which is the initial setting. Although it is changed to "7", in step 14, the setting output is not changed by the input signal from the mode holding means 56.

However, when the automatic heating end function operates while the device is used in the temperature control mode and the set temperature "7", the mode holding means 56 does not operate for a predetermined time T2 after the automatic heating end function operates. Since the device operating state before the automatic heating end function acts is stored as a holding signal and the holding signal is output to the mode control means 57, the mode control means 57.
Can know the temperature control mode and the set temperature "7" which are the operating states of the equipment before the automatic heating end function operates. Therefore, when a person who uses the device turns on the temperature control key to change the device operation mode from the initial mode to the temperature control mode within a predetermined time T2 after the automatic heating end function operates, as shown in FIG. In step 17, the set temperature is changed to the set temperature "5" which is the initial setting for the time being, but the temperature control mode which is the device operation mode after the change and the temperature control which is the device operation mode according to the input signal from the mode control means 56. Since the modes match, in step 18, the set temperature is changed from the initial set temperature "5" to the set temperature "7" by the input signal from the mode holding means 56 again.

With the above-mentioned structure, it is possible to return to the completely same state as before the automatic heating end function operates by operating the input means once, and the set output or the setting can be performed as compared with the first problem solving means. It is possible to save the trouble of operating the input means a plurality of times to restore the temperature to the original state and to make the device more convenient.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG. The difference from the first embodiment is that the structure of the mode holding means 55 is based on the input signal from the notification means 53 rather than the predetermined time T2 after the mode initialization signal is input from the timer means 54 to prohibit the update of the holding signal. The mode holding means 58 is newly provided with the configuration for performing.
That is.

In the first embodiment, the mode holding means 55 sets the counter to 1 in order to measure the predetermined time T2.
One must own and perform the counting operation.

The present invention is to improve such a point, and the induction heating cooker configured as described above,
The operation will be described with reference to FIGS. 8 and 9. FIG. 8 is a flowchart showing the operation of the mode holding means 58.
As shown in FIG. 8, when the power switch 2 is turned on and the AC power 1 is applied to the device, the mode holding unit 58 starts operating. First, at step 21, it is judged whether a mode initialization signal for changing the device operation mode from the timer means 54 to the initial mode is input. If the mode initialization signal is not input, the mode holding means 58 inputs a signal indicating the setting of the device operation mode or the like from the mode control means 50 in step 22, and uses this input signal as a holding signal in step 23. After saving, the holding signal is output to the induction heating unit control means 4 in step 24 and then step 2
Return to the mode initialization signal input determination state of 1.

However, when the mode initialization signal is input, the mode holding means 58 outputs the holding signal to the induction heating section control means 4 in step 25, and the automatic heating end function from the notification means 53 in step 26. The input determination of the signal indicating that the timer notification for notifying is completed is performed. Then, the mode holding means 58 outputs a holding signal for storing the settings such as the device operation mode before the automatic heating end function operates in step 25 to the induction heating part control means 4 until the timer notification ends, When it is detected in step 26 that the timer notification has ended, step 21
The holding signal is updated to a signal indicating the initial mode by the input signal from the mode control processing 50 as shown in Steps 22 and 23 via the above, and the holding signal, that is, the signal indicating the initial mode is changed to the induction heating unit in Step 24. Output to the control means 4.

As shown in FIG. 9, when the timer means 54 finishes counting, the automatic heating end function is actuated, the mode control means 50 changes the setting of the equipment operation mode and the like to the initial mode, and the display means 52 displays the initial mode. However, since the induction heating unit control means 4 inputs the setting before the automatic heating end function operates from the mode holding means 58 until the notification means 53 finishes the timer notification, the induction heating part 3 follows the previous settings. Can be controlled. That is, the notification means 53
If the input means 51 is operated again to return to the setting before the automatic heating end function operates while the timer is informing, the induction heating part control means 4 operates the device operation mode before the automatic heating end function operates. And the control of the induction heating unit 3 can be continued in sequence.

With the configuration as described above, the counting operation for measuring the time for prohibiting the update of the holding signal is realized while realizing the restoration processing of the setting of the device operation mode etc. when the automatic heating end function acts. Therefore, the configuration of the device can be simplified.

The predetermined time T1 that defines the automatic heating end function in the first, second and third embodiments is a value unique to the device and cannot be set by the user, or the user operates the input means 51 to set an arbitrary value. The same effect can be achieved in both cases where the setting can be made to. In addition, the same effect can be achieved whether the signal transmission / reception between the operation unit 5 and the induction heating unit control unit 4 is parallel communication using a plurality of wires or serial communication using a single wire. Furthermore, the conventional example and Examples 1, 2, 3
In the above, it is obvious that a part or all of the induction heating part control means 4 and the control part 5 can be implemented by a single unit or a plurality of microcomputers.

[0048]

As described above, the induction heating cooker of the present invention comprises an induction heating section including a heating coil and a switching means, and an induction heating section control means for controlling the induction heating section.
Input means, display means, timer means, and means for controlling the display means and changing or maintaining settings relating to equipment operating modes such as equipment operating mode and setting output based on input signals from the input means or timer means. A mode control means for controlling is provided, the input signal from the mode control means is periodically updated and stored as a holding signal, the holding signal is output to the induction heating section control means, and the signal from the timer means is output. By including a mode holding means for outputting the holding signal without updating for a predetermined time after the input, the initial mode is set by the end of counting by the timer means while the fried food is being cooked in the temperature control mode / temperature stable state. Even if the display changes to the one shown, the person using the device operates the input means to change the device operation mode back to the original temperature control mode within the specified time. Then, you can restart cooking immediately without waiting for the display to change from the temperature rising display to the oil temperature stable display, and the oil temperature is set because the temperature does not rise. It is possible to prevent the temperature from increasing by the amount of the initial correction processing.

As a second means for solving the problem, the mode holding means outputs the holding signal to the mode controlling means in addition to the induction heating section controlling means, and the mode controlling means outputs a predetermined signal from the input means. By inputting, the device operating state is changed to the setting indicated by the input signal from the mode holding means, so that it is possible to return to the completely same state as before the automatic heating end function operates by operating the input means only once, It is possible to save the trouble of operating the input means a plurality of times in order to return the set output or the set temperature to the original state, and to make the device more convenient.

Further, as a third means for solving the problems, an induction heating unit including a heating coil and a switching unit, an induction heating unit control unit for controlling the induction heating unit, an input unit,
A display unit, a timer unit, an informing unit for informing in association with an output from the timer unit, an apparatus for controlling the display unit and the informing unit and based on an input signal from the input unit or the timer unit. The induction heating unit is provided with a mode control means for changing or maintaining the settings related to the device operating state such as operation mode and setting output, and periodically updating the input signal from the mode control means while saving it as a holding signal. By providing the mode holding means for outputting the holding signal to the control means and outputting the holding signal without updating based on the input signal from the notifying means, the mode holding means prohibits the updating of the holding signal. It is possible to simplify the configuration of the device by omitting the counting operation for.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing the operation of a mode holding means of the induction heating cooker.

FIG. 3 is a diagram showing a change of the device operation mode by the timer means of the induction heating cooker.

FIG. 4 is a diagram showing a change in a device operation mode during a timer notification of the induction heating cooker.

FIG. 5 is a block diagram of an induction heating cooker according to a second embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the induction heating cooker in the initial mode.

FIG. 7 is a block diagram of an induction heating cooker according to a third embodiment of the present invention.

FIG. 8 is a flowchart showing the operation of the mode holding means of the induction heating cooker.

FIG. 9 is a diagram showing a change of the device operation mode by the timer means of the induction heating cooker.

FIG. 10 is a block diagram of an induction heating cooker in a conventional example.

FIG. 11 is a flowchart showing the operation of the mode control means of the induction heating cooker.

FIG. 12 is a flowchart showing the operation of the induction heating cooker in the initial mode.

FIG. 13 is a diagram showing a change of the device operation mode by the timer means of the induction heating cooker.

FIG. 14 is a diagram showing a change in the device operation mode while the timer of the induction heating cooker is informed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 AC power supply 2 Power switch 3 Induction heating part 4 Induction heating part control means 5 Operation part 6 Temperature sensing element 7 Load pan 30 Rectifier 31 Heating coil 32 Switching means 33 Inverter circuit 50 Mode control means 51 Input means 52 Display means 53 Notification means 54 timer means 55 mode holding means

Claims (3)

[Claims] 1. An induction heating unit for inductively heating an object to be heated,
The induction heating unit includes an induction heating unit control unit that controls ON / OFF of the output of the induction heating unit, and an operation unit that controls the output of the induction heating unit control unit, and the operation unit starts induction heating by the induction heating unit. Input means, timer means for timing by the output of the input means, mode control means for setting the output mode of the induction heating section by the output of the input means, and a predetermined time after the timer means has finished counting time. And a mode holding means for performing induction heating in the output mode. 2. The induction heating cooker according to claim 1, wherein the mode control means changes the output mode when the output mode based on the signal from the mode holding means matches the output mode based on the signal from the input means. 3. An induction heating unit for inductively heating an object to be heated,
The induction heating unit includes an induction heating unit control unit that controls ON / OFF of the output of the induction heating unit, and an operation unit that controls the output of the induction heating unit control unit, and the operation unit starts induction heating by the induction heating unit. Input means, timer means for timing by the output of the input means, mode control means for setting the output mode of the induction heating section by the output of the input means, and notification means for emitting a sound by the output of the mode control means An induction heating cooker having a mode holding means for performing induction heating in the output mode during timing while the output from the notifying means is present after the timer means finishes timing.