JP2010108609A - Induction heating cooking apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an induction heating cooking apparatus capable of drawing the attention of the user. <P>SOLUTION: When the temperature of a top plate in a vicinity of a heated object or a heating coil is detected as being high, or when the input power after heating has started is added and the integrated value reaches a prescribed value, it is so structured that a high temperature display is carried out on following either of the conditions. When a temperature detecting means fails or its response is poor also, the high temperature display is carried out, without fail, by forecasting a high temperature from the integrated power value, to draw the attention of the user. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an induction heating cooker having a high temperature display means for informing when a heating means or a top plate on which an object to be heated is placed is high in order to prevent burns.

Conventionally, this type of induction heating cooker monitors the temperature of the top plate near the object to be heated or the heating coil, and when it detects that the temperature is high, it displays that fact and the user is inconvenienced. One having a high-temperature display function for touching the preparation to prevent burns is known (see, for example, Patent Document 1).
JP 2002-75614 A

  However, in the conventional configuration, when the detection means for detecting the temperature of the top plate near the object to be heated or the heating coil fails, or when the detection means is composed of a thermistor or the like and the responsiveness is poor, the high temperature display is performed. It did not work and had the subject that a user might be burned by touching a hot part.

  The present invention solves the above-mentioned conventional problem, when it is detected that the top plate temperature in the vicinity of the object to be heated or the heating coil is high, or integrates the input power after starting the heating, When the integrated value reaches a predetermined value, the high temperature display is performed when any one of the conditions is satisfied. As a result, even if the temperature detection means fails or the response is poor, it is possible to predict that the temperature is high from the integrated power value and to display the high temperature reliably, and to alert the user. An object of the present invention is to provide an induction heating cooker.

  In order to solve the conventional problems, an induction heating cooker according to the present invention includes a heating coil that induction-heats an object to be heated, and a top plate that is provided on the heating coil and on which the object to be heated is placed. A heating start key for starting heating of the object to be heated by the heating coil, temperature detecting means for detecting the temperature of the object to be heated or the top plate in the vicinity of the heating coil, and the heating start key Power integration means for integrating input power after heating is started, and high temperature display means for displaying that there is a possibility that the object to be heated or the top plate in the vicinity of the heating coil is hot. After the heating start key is pressed and heating by the heating coil is started, the temperature detecting means detects the object to be heated or the toner near the heating coil. A configuration in which the high temperature display means displays when it is detected that the plate temperature has reached a predetermined temperature, or when the integrated value of input power from the start of heating integrated by the power integrating means reaches a predetermined value; It is a thing.

  As a result, even when the temperature detection unit fails or the response is poor, it is possible to predict that the temperature is high from the integrated power value and to reliably display the high temperature, and to alert the user. Therefore, a highly safe product will be provided.

In the induction heating cooker of the present invention, when it is detected that the temperature of the top plate near the object to be heated or the heating coil is high, or the integrated value of the input power after starting heating reaches a predetermined value. If any of the conditions is met, a high-temperature display will be performed. Thus, the high temperature display can be surely performed and the user can be alerted.

  1st invention is a heating coil which carries out induction heating of a to-be-heated object, a top plate provided in the upper part of the above-mentioned heating coil, and placing the above-mentioned to-be-heated object, and start of heating of the to-be-heated object by the above-mentioned heating coil Heating start key for performing heating, temperature detecting means for detecting the temperature of the object to be heated or the top plate in the vicinity of the heating coil, and power for integrating input power after heating is started by the heating start key And a high temperature display means for indicating that the object to be heated or the top plate near the heating coil may be at a high temperature, and heating by the heating coil when the heating start key is pressed. After the start, the temperature detecting means detects that the temperature of the object to be heated or the top plate near the heating coil has reached a predetermined temperature. If you, or the integrated value of the input power from the start of heating is integrated by the power integrating means is that the high temperature displaying means has a configuration in which the display when it reaches the predetermined value.

  As a result, even when the temperature detection means breaks down or when the responsiveness is poor, it is possible to predict that the temperature is high from the integrated power value and reliably display the high temperature, and to produce a highly safe product. Can be provided.

  A second invention includes a heating stop key for stopping heating of the object to be heated by the heating coil, and the heating stop key is pressed during heating and when the high temperature display means is displaying, and the heating When the heating of the object to be heated by the coil is stopped, the high temperature display is continued during the first predetermined time, and after the first predetermined time has elapsed, the high temperature display is displayed until the temperature detected by the temperature detecting means falls to the predetermined temperature. Continuing, after the detected temperature falls to the predetermined temperature, the high temperature display is stopped when a second predetermined time determined by the time from when the detected temperature is lowered to the predetermined temperature is elapsed. It is.

  As a result, even after the heating is stopped, if there is a possibility that the object to be heated or the top plate near the heating coil is at a high temperature, the high temperature display is continued, and the high temperature display is performed depending on how long the high temperature has continued. It is possible to adjust the time to stop and display only for an appropriate time.

  According to a third aspect of the present invention, when heating is stopped and heating of the article to be heated by the heating coil is stopped while heating is being performed and the high temperature display unit is displaying, heating start integrated by the power integrating unit is started. The high temperature display is continued until the third predetermined time determined by the input power integrated value from the stop to the stop.

  As a result, even when the temperature detection means breaks down or the responsiveness is poor, the high temperature display can be stopped appropriately after the heating is stopped, and the high temperature display continues for a long time, causing anxiety to the user. There is nothing.

  According to a fourth aspect of the present invention, when the temperature detected by the temperature detecting means becomes equal to or higher than the predetermined temperature when not being heated, the high temperature display means displays until the detected temperature becomes lower than the predetermined temperature. The high temperature display is continued until a fourth predetermined time determined by a time from when the temperature becomes equal to or higher than the predetermined temperature until the temperature becomes lower than the predetermined temperature.

Thus, even when a high-temperature object is placed on the top plate during non-heating, the user can clearly indicate that the temperature is high, and a product that is safe for the user can be provided.

  According to a fifth aspect of the invention, the display content of the high temperature display means is different between heating and non-heating. Thereby, it is possible to easily show to the user whether or not heating is in progress, and safety can be improved.

  6th invention is equipped with the audio | voice output means which outputs an audio | voice, and if the said temperature detection means detects that the said top plate temperature of the said to-be-heated object or the said heating coil reached | attained predetermined temperature, the said high temperature display means Is displayed, and the sound output means outputs sound. Thereby, it can be shown to a user that it is high temperature in an easy-to-understand manner, and a safe product can be provided.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a schematic diagram of an induction heating cooker according to the first embodiment of the present invention.

  The induction heating cooker includes a cooking container 1 for putting a cooked food, a top plate 2 on which the cooking container 1 is placed, a heating coil 3 for generating an induction magnetic field to heat the cooking container 1, and the heating coil. 3 for detecting the temperature of the top plate 2 in the vicinity of the cooking container 1 or the heating coil 3. Displayed when there is a possibility that the unit 6, the power integrating unit 7 that integrates the input power after starting heating, and the top plate 2 in the vicinity of the cooking container 1 or the heating coil 3 may be hot. And a high-temperature display unit 8 for performing The heating operation unit 5 includes a heating start key 5a for starting heating, a heating stop key 5b for stopping heating, and the like.

  About the induction heating cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated using FIG.

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

  First, heating is started in STEP101. Next, in STEP 102, it is determined whether the temperature detected by the temperature detection unit has reached a predetermined value, or whether the integrated value of the input power integrated by the power integration unit has reached a predetermined value. When either reaches a predetermined value, the process proceeds to STEP 103, and the high temperature display unit performs display such as turning on an LED, for example. Next, in STEP 104, it is determined whether the heating is turned off. The display is continued while heating is continued. When the heating is turned off, the process proceeds to STEP 105, and the high-temperature display unit changes the display content, for example, by changing the LED from lighting to blinking. Subsequently, in STEP 106, it is determined whether or not a first predetermined time has elapsed since the heating was turned off. When the first predetermined time has elapsed, the process proceeds to STEP 107, and it is determined whether or not the temperature detected by the temperature detection unit has fallen below a predetermined value. When the detected temperature becomes lower than the predetermined value, the process proceeds to STEP 108, and the second predetermined time is determined by the time from when the detected temperature is lower than the predetermined value after the heating is turned off. Next, in STEP 109, it is determined whether or not a second predetermined time has elapsed after the detected temperature has become lower than a predetermined value. When the detected temperature has elapsed, the process proceeds to STEP 110, and the high temperature display unit turns off the display.

With the above configuration, even when the temperature detection unit fails or the response is poor, it is possible to predict that the temperature is high from the integrated power value and reliably display the high temperature, which is highly safe Goods can be offered. Even after the heating is stopped, if there is a possibility that the cooking container or the top plate near the heating coil is hot, the high temperature display is continued, and depending on how long the high temperature has continued, the high temperature display is stopped. The display time can be adjusted and displayed for an appropriate time. Furthermore, by changing the display content of the high-temperature display section between heating and non-heating, it is possible to easily show to the user whether or not heating is being performed, and safety can be improved.

  Further, if heating is turned off while heating is being performed and the high temperature display unit is displaying, a third predetermined time determined by the input power integrated value from the heating start to the stop integrated by the power integrating unit elapses. By adopting a configuration that continues the high temperature display, even if the temperature detection means breaks down or the response is poor, the high temperature display can be stopped properly after the heating is stopped, and the high temperature display continues for a long time. The user is not worried.

  In addition, if the temperature detected by the temperature detector exceeds a predetermined value during non-heating, the high temperature display will display a high temperature, and display will continue until the detected temperature falls below the predetermined temperature, after which the detected temperature is above the predetermined temperature. When a high-temperature object is placed on the top plate during non-heating by adopting a configuration in which the high-temperature display is continued until the fourth predetermined time determined by the time until the temperature becomes lower than the predetermined temperature after becoming However, it is possible to clearly indicate to the user that the temperature is high, and it is possible to provide a safe product for the user.

  Furthermore, it has an audio output unit (not shown) for outputting audio, and when it detects that the temperature detected by the temperature detection unit has reached a predetermined temperature, the high temperature display unit displays and the audio output unit outputs audio. With this configuration, it is possible to more easily indicate to the user that the temperature is high, and a safe product can be provided.

  The induction heating cooker of the present invention can reliably display a high temperature by predicting that the temperature is high from the integrated power value even when the temperature detecting means fails or when the responsiveness is poor. It can be applied to uses such as an induction heating cooker used for kitchens in general households and business use.

Schematic of the induction heating cooker in Embodiment 1 of the present invention. Operation flow chart of induction heating cooker in Embodiment 1 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cooking container 2 Top plate 3 Heating coil 4 Heating control part 5 Heating operation part 5a Heating start key 5b Heating stop key 6 Temperature detection part 7 Electric power integration part 8 High temperature display part

Claims (6)

A heating coil for induction heating the object to be heated, a top plate provided on the heating coil for placing the object to be heated, and heating start for starting heating of the object to be heated by the heating coil A key, temperature detecting means for detecting the temperature of the object to be heated or the top plate in the vicinity of the heating coil, power integrating means for integrating input power after heating is started by the heating start key, A high temperature display means for displaying that there is a possibility that the heated plate or the top plate in the vicinity of the heating coil is at a high temperature, and after the heating start key is pressed and heating by the heating coil is started When the temperature detecting means detects that the temperature of the heated object or the top plate near the heating coil has reached a predetermined temperature, Induction heating cooker which is configured to perform said high temperature displaying means displays when the integrated value of the input power from the start of heating which is integrated by the power integrating means reaches a predetermined value. A heating stop key for stopping heating of the object to be heated by the heating coil is provided, and the heating stop key is pressed while heating and the high temperature display means is displaying, and the object to be heated by the heating coil is pressed. When the heating is stopped, the high temperature display is continued during the first predetermined time, and after the first predetermined time has elapsed, the high temperature display is continued until the temperature detected by the temperature detecting means falls to the predetermined temperature. 2. The induction heating according to claim 1, wherein after the temperature is lowered to the predetermined temperature, the high temperature display is stopped when a second predetermined time determined by a time from when the detected temperature is lowered to the predetermined temperature is elapsed. Cooking device. When the heating stop key is pressed while heating and the high temperature display means is displaying and heating of the object to be heated by the heating coil stops, the input power from the heating start to the stop integrated by the power integrating means The induction heating cooker according to claim 1, wherein the high temperature display is continued until a third predetermined time determined by the integrated value elapses. When the temperature detected by the temperature detecting means is not less than the predetermined temperature when not heated, the high temperature display means performs a high temperature display and continues the display until the detected temperature becomes lower than the predetermined temperature. The induction according to any one of claims 1 to 3, wherein the high temperature display is continued until a fourth predetermined time determined by a time from when the temperature becomes equal to or higher than the predetermined temperature until the temperature becomes lower than the predetermined temperature. Cooking cooker. The induction heating cooker according to any one of claims 1 to 4, wherein the display content of the high temperature display means is different between during heating and after the heating is stopped. Audio output means for outputting sound, and when the temperature detection means detects that the top plate temperature near the object to be heated or the heating coil has reached a predetermined temperature, the high temperature display means performs display, The induction heating cooker according to any one of claims 1 to 5, wherein the sound output means outputs sound.

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