JPH09219285A - Induction heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a setting ineffective in case of long time cooking with low heating power for setting a time corresponding to heating power without malfunction by providing a left-ON prevention setting means for an induction heating cooker to set a left-ON preventing means to be effective or ineffective. SOLUTION: In an induction heating cooker, when a time counted by a counting means 6 elapsed, a left-ON preventing means 7 outputs a signal to a control means 5 to stop the operation of an induction heating means 3. The left-ON prevention setting means 8 sets the left-ON preventing means 7 to be effective or ineffective. If boiled beans or others requiring at least two hours to be heated with low heating power are cooked, the left-ON prevention setting means 8 is set to be ineffective. Then, even when a time set for the left-ON preventing means elapsed, the operation of heat is kept on.

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 ordinary households.

[0002]

2. Description of the Related Art In recent years, induction heating cookers using induction heating as a heating source have been reviewed from the viewpoints of high thermal power and safety, and their proportion in the cookers has been increasing. FIG. 4 is a block diagram showing the configuration of this induction heating cooker. Reference numeral 101 denotes a heating start means, which is a switch for instructing the user to start heating. Reference numeral 102 denotes a heating power setting means for setting a heating power, and is configured to select and set a desired heating power from a plurality of stages of heating power. Further, 103 is an induction heating means, which is composed of an induction heating coil which is provided below the top plate and which generates a high frequency magnetic field, and an inverter circuit which supplies a high frequency current to the induction heating coil. The high-frequency magnetic field generated by the induction heating coil interlinks with the load 104 such as a magnetic pot placed on the top of the top plate to inductively heat the load 104. This inverter circuit is controlled by the control means 105, that is, the heating start means 10
The inverter circuit is controlled to supply a predetermined high-frequency current to the induction heating coil so as to start the operation in response to the signal 1 and set the heating power set in the heating power setting means 102.

Reference numeral 106 is a time counting means, which counts the elapsed time after the user finally sets or operates the heating start means 101 or the heating power setting means 102 or the heating start means 101 and the heating power setting means 102. There is.

With the above structure, the user can set the heat power setting means 10
When 2 is operated to set the heating power and the heating start means 101 is pushed, the induction heating means 103 starts its operation to start the induction heating of the load 104 on the top plate. That is, the load 104 interlinks with the high-frequency magnetic field generated by the induction heating coil to generate an eddy current, and the eddy current heats itself. For this reason, the food contained in the load 104 is heated and cooking proceeds. At this time, the surface of the induction heating cooker, that is, the top plate itself, merely generates a high-frequency magnetic field and does not generate red heat. Therefore, the user may not be able to recognize that the user is operating just by looking at it. Especially load 10
With 2 removed from the top rate, it is extremely difficult to tell whether or not it is operating. Therefore, as described above, the time measuring means 106 is provided so that the operation of the control means 105 is forcibly stopped when the elapsed time from the user's instruction to start cooking reaches a predetermined time. Is what you are doing. That is, the induction heating cooker can be used safely.

[0005]

SUMMARY OF THE INVENTION The induction heating cooker having the above-mentioned conventional structure has a problem that the forget-for-cut prevention means malfunctions. That is, when cooking such as boiled beans is heated for a long time with a low heat power, the cooking is completed within the time set in the forgetting prevention means, for example, 2 hours. Therefore, in this case, the user has to operate so as to continue heating again after about two hours.

[0006]

SUMMARY OF THE INVENTION The present invention is to solve the problems of the above-described conventional structure, and provides an induction heating cooker which allows the user to select whether to activate or stop the function of the forgetting prevention means. There is something.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is provided with forgetting prevention setting means for setting whether the forgetting prevention means is effective or ineffective, and in the case of cooking that requires long heating with low heat power, The induction heating cooker is set so that the setting is disabled so that there is no malfunction.

Further, the invention according to claim 2 is provided with an forget-for-prevention time setting means for setting a time when the forget-for-cut prevention means operates instead of the forget-for-cut prevention setting means, and induction heating cooking in which the set time can be freely changed. It is a container.

According to the third aspect of the present invention, in place of the forget-to-cut prevention setting means, a forget-to-cut time automatic setting means is provided for determining the time for which the forget-to-cut prevention means operates according to the heating power set by the heating power setting means. It is an induction heating cooker that can automatically set a set time according to the heating power used.

[0010]

Embodiments of the present invention will be described below. FIG. 1 is a block diagram showing the configuration of the induction heating cooker of this embodiment. Reference numeral 1 is a heating start means for instructing the user to start heating, which is constituted by a switch. Reference numeral 2 denotes a heat power setting means for the user to set the heat power, and is configured to select and set a desired heat power from a plurality of stages of heat power.
Reference numeral 3 denotes an induction heating means configured by an induction heating coil that generates a high frequency magnetic field and an inverter circuit that supplies a high frequency current to the induction heating coil, and induction loads a load 4 such as a pan. The induction heating means 3 is controlled by the control means 5 which operates according to the information of the heating start means 1 and the heat power setting means 2. Reference numeral 6 is a time counting means for counting the elapsed time after the user finally sets or operates the heating start means 1 or the heating power setting means 2 or the heating start means 1 and the heating power setting means 2. Further, 7 is a forget-to-cut prevention means, which outputs a signal to the control means 5 to output a signal to the control means 5 when a predetermined time of, for example, 2 hours, which has been preset from the viewpoint of safety, has been counted by the time counting means 6. Stop the operation. 8 is forgetting prevention setting means,
The switch is configured by a user to select whether the forgetting prevention means 7 is valid or invalid.

The operation of the embodiment will be described below. As explained in the conventional example, in order to ensure the safety of the product,
The forget-for-turn-off prevention means 7 sends a signal to the control means 5 to stop the operation of the induction heating means 3 when a predetermined time of 2 hours has elapsed from the moment of starting use. However, as described in the conventional example, the set time of 2 hours is too short when cooking such as boiled beans requiring low heating power for long time heating is performed. However, at present, no method has been found that can effectively distinguish between the case where the load 4 is heated by a very low power setting and the no-load state. Therefore, in the present embodiment, the forget-to-cut prevention setting unit 8 is provided.

The forget-to-cut prevention setting means 8 can set the setting of the forget-to-cut prevention means 7 to valid or invalid, and the valid / invalid setting can be changed depending on the type of cooking to be performed by the user. That is, when cooking such as boiled beans that requires heating for 2 hours or more with a low heat power, the user sets the setting of the forget-for-cut prevention setting means 8 to the invalid side. In this way, the induction heating cooker according to the present embodiment can continue the heating operation even after the elapse of 2 hours set in the forget-to-cut prevention means 7. By setting the setting of the forget-for-prevention prevention means 7 to the effective side again at the stage where the cooking is completed in this way, it becomes a safe induction heating cooker on which the forget-for-cut prevention means 7 acts again in the next use.

As described above, according to the present embodiment, the cut-forgetting prevention setting means 8 can set the cut-forgetting prevention means 7 to disable the cut-forgetting prevention function, and the cooking can be performed for a necessary time. After the cooking is completed, if the forget-to-cut prevention setting means 8 sets the forget-to-cut prevention means 7 to be effective for forgetting to cut, the induction heating cooker can be used safely.

At this time, substantially the same effect can be obtained by using the forget-for-turning prevention time setting means 9 as shown in FIG. 2 instead of the forget-for-turning prevention setting means 8. That is, the forget-for-turn-off prevention time setting means 9 allows the user to freely set the forget-for-turn-off prevention time. Therefore, when the user cooks boiled beans, this time can be set to, for example, 4 hours. At the stage when this cooking is finished, the
If you put it back in time, you can use it safely. In addition, when returning to the original two hours, the setting can be easily performed by operating an original state return button (not shown).

At this time, if the forget-to-cut prevention setting means 8 is replaced with the forget-to-cut time automatic setting means 10 as shown in FIG. 3, the induction heating can be automatically performed. Can be cooked. That is, the forget-to-cut time automatic setting means 10 can automatically set the operation time according to the heating power set by the heating power setting means 2. For example, when the heat power is 300 W or more, 2 hours can be set, and when the heat power is less than 300 W, 6 hours can be set. Therefore, when the user is cooking boiled beans, the setting of the heating power is of course less than 300 W, and the setting of the forgetting prevention time is 6 hours.
Further, when this cooking is completed, the original time setting of 2 hours is automatically restored by the operation of the forgetting time automatic setting means 10.

[0016]

According to the invention described in claim 1, the induction heating means for inductively heating the load, the heating start means for the user to start the heating operation, and the heating power setting for the user to set the heating power. Means, the control means for controlling the induction heating means by receiving the information of the heating start means and the heating power setting means, and the user finally operating the heating start means or the heating power setting means or the heating start means and the heating power setting means. Effectiveness of the time keeping means for counting the elapsed time after that, the turning off prevention means for outputting the signal indicating the heating stop to the control means when the time counting means counts the passage of the predetermined time, and the turning off prevention means・ As a configuration with forget-me-not prevention setting means for setting invalidity, in case of cooking that requires low heating power and long-time heating, the forget-me-not prevention setting means is used. Is able to invalidate the set The times set to preventing means is realized with no malfunction induction heating cooker.

According to the second aspect of the present invention, instead of the forget-for-forgetting prevention setting means, a forget-for-preventing time setting means for setting a time at which the forget-forgetting prevention means operates is provided, and induction heating capable of freely changing the set time is provided. It realizes a cooking device.

In the invention described in claim 3, in place of the forget-for-cut prevention setting means, a forget-for-cut time automatic setting means is provided for determining a time for which the forget-for-cut prevention means operates according to the heating power set by the heating power setting means. , Induction heating cooker that can automatically set the set time according to the heating power used.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a configuration of an induction heating cooker including a forget-to-cut prevention time setting unit.

FIG. 3 is a block diagram showing a configuration of an induction heating cooker including automatic forgetting time automatic setting means.

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

[Explanation of symbols]

 1 Heating Start Means 2 Thermal Power Setting Means 3 Induction Heating Means 4 Loads 5 Control Means 6 Timekeeping Means 7 Turning Forgetting Prevention Means 8 Forgetting Cutting Prevention Setting Means 9 Forgetting Preventing Time Setting Means 10 Automatic Forgetting Time Setting Means

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroshi Tominaga 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hideki Ryukaku, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co. 72) Inventor Yuji Fujii 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. Induction heating means for inductively heating a load, and heating start means for allowing a user to start heating.
Thermal power setting means for the user to set thermal power, control means for controlling the induction heating means by receiving information from the heating start means and thermal power setting means, heating start means or thermal power setting means or heating start means and thermal power setting A timer means for counting the elapsed time since the user last operated the means, and a signal indicating the stop of heating is output to the control means when the timer means counts the passage of a predetermined time. An induction heating cooker comprising a forget-to-cut prevention means and a forget-to-cut prevention setting means for setting whether the forget-for-cut prevention means is enabled or disabled. 2. The induction heating cooker according to claim 1, further comprising, in place of the forget-for-cut prevention setting unit according to claim 1, a forget-for-cut prevention time setting unit for setting a time at which the forget-for-cut prevention unit operates. 3. The automatic forgetting time setting unit, which replaces the forgetfulness preventing setting unit described in claim 1, and determines the time for which the forgetfulness preventing unit operates according to the heating power set by the heating power setting unit. The induction heating cooker described.