JP2016025031A - Induction heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability such as selection of an object to be heated, of an input operation part including a display screen in an induction heating cooker using a multicoil heating system.SOLUTION: The induction heating cooker is provided in which one object to be heated is heated by cooperative operations of a plurality of heating coils which are positioned below the object to be heated, out of four or more heating coil groups which are positioned to be adjacent to each other. A position of an object N to be heated placed on a top plate over the heating coils is detected by a control device. The control device causes a display screen to display the detected position of the object to be heated with a first icon operable by a user, detects whether the user rightly selects the first icon and when the user rightly selects the first icon, causes the display screen to display a second icon enabling a heating cooking condition such as a heating power to be set. For enabling the control device to do the above operation, the control device includes a voice guide device which guides in voice, a series of touch operations from a display step of the first ion to a display step of the second icon.SELECTED DRAWING: Figure 4

Description

The present invention relates to an induction heating cooker, and more particularly to an induction heating cooker of a type in which one object to be heated (such as a metal pan) is heated by a plurality of heating coils.

Conventionally, an induction heating cooker that heats one object to be heated (such as a metal pan or frying pan) by a plurality of heating coils installed adjacent to each other (hereinafter, this method is referred to as “multi-coil method”). Has been proposed (see, for example, Patent Document 1).

Furthermore, in the multi-coil system, it is determined whether the cooking container, which is the object to be heated, is placed in order to provide an induction heating device that clearly displays the operation area, is easy to use, and has high reliability and safety. A cooking container detection unit, and an operation unit. The determination result of the cooking container detection unit is displayed as an icon in the placement status display area of the operation unit, and the icon display unit is touched to select it. An operation panel is displayed in the operation display area of the operation unit, and an operation panel is selected so that the cooking container corresponding to the icon is heated by selecting the operation panel (for example, Patent Documents). 2).

JP 2010-165656 A (first page, FIG. 1) JP 2014-44852 A (first page, FIG. 3)

However, the user may not be able to select the icon displayed in the placement status display area accurately and quickly. Currently, it is the mainstream to improve the operability by providing an operation unit including a display screen on the upper surface of the induction heating cooker.However, in order to secure the heating area on the top plate, the operation unit is flat. There are restrictions on the area (size). For this reason, a display screen having a touch input function formed from a liquid crystal display screen or the like cannot be enlarged, and the size of an icon for touch input displayed on the display screen (a shape that can be visually recognized). For a user with a small dimension), for example, a weak eyesight, it may be difficult to quickly identify the icon, and there are problems in terms of usability and safety.

An object of the present invention is to enable a user to easily select an icon displayed in a placement status display area and start cooking with a desired object to be heated.

The induction heating cooker according to the first invention is
A main body having a top plate on which an object to be heated is placed;
A plurality of heating coils housed in the body;
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit for determining whether or not an object to be heated is placed immediately above the heating coil;
An input operation unit provided on the upper surface of the main body;
A main power switch provided on the main body;
A voice guide device for notifying a user of the input operation section by voice information related to the operation;
A control device that controls the input operation unit, the inverter circuit, and the voice guide device;
The input operation unit has a display screen on which a plurality of types of icons for touch input are displayed,
The control device displays a first icon in a display area of the display screen based on a result of the placement of the heated object determined by the heated object placement determining unit,
The voice guidance device informs the user of information that is helpful for touching the first icon.
When the control device detects that the user touches the first icon, the control device displays a second icon for selecting a cooking condition on the display screen, and then the user displays the second icon. By detecting the touch, an object to be heated corresponding to the first icon is selected as a heating target, and heating conditions can be input.

According to the induction heating cooker of the first invention, when the user touches a predetermined position in the touch detection range at a position corresponding to the display screen of the operation unit, the user selects a desired first icon. However, if the touched position does not match the position of the icon, the position shift is detected, and the voice guide device informs the voice guide device of the information indicating the position of the first icon. Therefore, the user can easily select the first icon displayed in the placement status display area with the input operation unit, and the operability can be improved.

The induction heating cooker according to the second invention is
A main body having a top plate on which an object to be heated is placed;
A plurality of heating coils housed in the body;
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit for determining whether or not an object to be heated is placed immediately above the heating coil;
An input operation unit provided on the upper surface of the main body;
A main power switch provided on the main body;
A voice guide device for notifying the input operation unit user of information related to the operation by voice;
A control device that controls the input operation unit, the inverter circuit, and the voice guide device;
The heating coils are regularly arranged so as to be adjacent to each other, and have the same outer diameter,
The input operation unit has a display screen on which a plurality of types of icons for touch input are displayed,
In the control device, the heated object placement determination unit has the first heated object and the second heated object placed on at least two adjacent heating coils at different positions. Based on the result determined to be the situation, the first icon is simultaneously displayed in two places in the display area of the display screen,
The voice guidance device informs the user of information that is helpful for touching the first icon.
When the control device detects that the user touches the first icon for the first object to be heated among the first icons at the two locations, the control apparatus performs the first heating on the display screen. By displaying a second icon for selecting a cooking condition by an object and then detecting that the user touches the second icon, the first object to be heated corresponding to the first icon is displayed. It is selected as a heating target and can input heating conditions.
Furthermore, the control device selects a second cooking condition by the second heated object during a period in which the second icon for selecting the cooking condition by the first heated object is displayed. The icon is not displayed.

According to the induction heating cooker of the second invention, when the user touches a predetermined position on the display screen corresponding to the first icon to select the first object to be heated, the touched position and the first If the position of the icon of the first icon does not match, the voice guide device informs the voice guide device of the information indicating the position of the first icon, so the first status displayed in the placement status display area is displayed. The icon can be easily selected by touching the user, and the operability can be improved. Moreover, even if the icon for selecting a to-be-heated object is displayed at two or more places simultaneously, the 2nd which selects the conditions of heating cooking about the 1st to-be-heated object by selection of a 1st icon During the period when the icon is displayed, the second icon for selecting the cooking condition by the second heated object is not displayed. The display area can be used effectively, and the user is not confused when setting the cooking conditions for the two objects to be heated. For this reason, it is possible to prevent the operation method from becoming complicated, and an easy-to-understand operation can be realized.

According to the present invention, in the multi-coil induction heating cooker, unnecessary confusion is not caused when the user selects an object to be heated. For this reason, it is possible to prevent the operation method from becoming complicated, and an easy-to-understand operation can be realized.

The perspective view which shows the external appearance of the induction heating cooking appliance which concerns on Embodiment 1 of this invention. The block diagram which shows the circuit structure of the induction heating cooking appliance which concerns on Embodiment 1 of this invention. The top view of the induction heating cooking appliance which concerns on Embodiment 1 of this invention. The top view 1 which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The top view 2 which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The top view 3 which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The top view 4 which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The top view 5 which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The flowchart figure which shows the control action of the control apparatus of the induction heating cooking appliance of FIG. The top view which shows the operation | movement process of the display screen of the induction heating cooking appliance which concerns on Embodiment 2 of this invention. The top view 1 which shows the display screen of the induction heating cooking appliance of FIG. 10, and its peripheral part. The top view 2 which shows the display screen of the induction heating cooking appliance of FIG. 10, and its peripheral part. The flowchart figure which shows the control action of the control apparatus of the induction heating cooking appliance of FIG. The top view which shows the operation | movement process of the display screen of the induction heating cooking appliance which concerns on Embodiment 3 of this invention. The flowchart figure which shows the control action of the control apparatus of the induction heating cooking appliance of FIG. The top view of the induction heating cooking appliance which concerns on Embodiment 4 of this invention. The flowchart figure which shows the control action of the control apparatus of the induction heating cooking appliance of FIG. It is a top view which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG.

Embodiment 1 FIG.
Hereinafter, Embodiment 1 will be described with reference to FIGS. The first embodiment implements the first invention and the second invention.

FIG. 1 is a perspective view showing an appearance of an induction heating cooker (of a type incorporated in kitchen furniture) according to Embodiment 1 of the present invention. FIG. 2 is a block diagram showing a circuit configuration of the induction heating cooker. FIG. 3 is a plan view of the induction heating cooker of FIG. FIG. 4 is a plan view 1 showing an operation process of the display screen of the induction heating cooker of FIG. FIG. 5 is a plan view 2 showing an operation process of the display screen of the induction heating cooker of FIG. FIG. 6 is a plan view 3 showing an operation process of the display screen of the induction heating cooker of FIG. FIG. 7 is a plan view 4 showing the operation process of the display screen of the induction heating cooker of FIG. FIG. 8 is a plan view 5 showing the operation process of the display screen of the induction heating cooker of FIG. FIG. 9 is a flowchart showing a control operation of the control device for the induction heating cooker of FIG.

(Overall configuration of cooking device)
As shown in FIG. 1, the induction heating cooker CH according to the first embodiment is a built-in type or a built-in type used by being incorporated in kitchen furniture (system kitchen) (not shown). The induction heating cooker is composed of a box-shaped main body 1 and a top surface 2.

The top surface portion is attached so as to cover the upper surface of the main body portion 1, and a translucent or opaque top plate 3 formed of a heat-resistant glass plate or the like is placed on the main body portion 1 and fixed. .

Reference numeral 4 denotes a transparent window formed at the center of the left and right sides at a position near the front end of the top plate 3. Corresponding to this window, a liquid crystal display substrate 26 (not shown) for displaying a heating operation state or cooking condition setting information of the user is disposed at a position close to the lower surface of the top plate 3, and this liquid crystal display The display screen portion of the substrate can be seen from above the top plate 3 through the window 4. Reference numeral 5 denotes an upper surface operation unit that is disposed horizontally at the front end of the top surface 2. This top surface operation unit is for setting and changing various conditions of induction heating cooking (for example, heating power, heating time, etc.) and instructing start / stop of the heating operation, and corresponds to the “input operation unit” of the present invention. To do. Further, it is for instructing the setting and changing of various conditions (for example, heating power, heating time, etc.) of heating cooking of the grill section 6 which will be described later and the start / stop of the heating operation. Note that specific input operation keys, push button switches, dials, and the like dedicated to the grill section 6 are not shown.

On the upper surface (surface) of the top plate 3, a display screen 30 on which an icon 20 (to be described later) is displayed appears visually, although it does not appear as a physical structure. Although a specific portion of the top plate 3 itself does not emit light or generate an image, in the following description, the expression “displayed on the display screen” is used from the standpoint of the user who visually recognizes the display screen 30. use.

On the top surface of the top plate 3, as shown in FIG. 3, a heating area 8 for setting and cooking heated objects N1 and N2 such as a metal pan, a frying pan, and a cooking iron plate is set. . In FIG. 3, a range indicated by a one-dot chain line in a rectangle is a heating area. Corresponding to the heating area 8, a large number of heating coils 10 having a circular outer shape with a diameter of several cm to 10 cm are regularly arranged below the top plate 3. All of these heating coils have the same shape, the same structure (winding structure, etc.), and the same heating capacity (rated maximum heating power). That is, the same heating coils are regularly arranged in the front, rear, left, and right, and the heating coils 10 are arranged as close to each other as possible. In addition, the center part of each heating coil is a cavity 10A, and one sensor 12 of the heated object placement detecting unit 11 for determining whether or not the heated object N described later is placed is disposed here. It is. In the following description, when there are a plurality of objects to be heated and need to be distinguished from each other, symbols such as N1, N2,... Are used. Product N ".

In the plan view of FIG. 3, the arrangement of the induction heating coil 10 and the sensor 12 is illustrated so that the arrangement of the induction heating coil 10 and the sensor 12 can be understood. The part cannot be seen from above the top plate 3 (Note that if the top plate 3 is translucent, the outline may be seen to some extent).

In the multi-coil system, various methods have already been proposed for the heated object placement detection unit 11 for determining whether the heated object N is placed. For example, Japanese Patent Application Laid-Open No. 2010-165656 has not been described in detail. One example is shown in the publication. In addition, it uses an optical sensor that emits light toward the bottom surface of the object to be heated N and uses the reflected light to detect the presence of the object to be heated N, and detects a weak amount of current flowing through the induction heating coil. Various methods such as a method of detecting the presence of the object to be heated N can be applied.

The rectangular area corresponding to the window 4 on the upper surface (front surface) of the top plate 3 does not appear as a visible structure. For example, a transparent thin dielectric film and a user's finger are on the film. Processing such as wiring a number of fine detection electrodes that can electrically detect touching in the vertical and horizontal directions is performed, and a structure as a surface structure for touch is provided. That is, a range in which such detection electrodes are installed is a touch detection range 39 (see FIG. 4) described later. In other words, the touch detection range 39 includes a touch for the control device 23 to determine whether the user has touched various icons such as the first icon 20 and the second icons 60A to 60F described later. The position coordinate detection electrodes are arranged in a mesh pattern. As for the touch type input plate, a number of techniques such as a resistance film type and a capacitance type are already known, and thus detailed description thereof is omitted.

In the top plate 3, the rectangular area corresponding to the window 4 functions as the display screen 30 as described above, and is an area where the user can easily visually recognize display information such as characters and figures. This display area includes three display areas 40, 41, and 42 as described below (see FIG. 4).

That is, 40 is a first display area in which a first icon 20 (20A, 20B) described later is displayed. Reference numerals 41 and 42 denote second and third display areas other than the first display area 40. Since the first display area covers the entire heating area 8 on the wide top plate 3, an area far larger than the second and third display areas 41 and 42 is set, and this area is reduced. However, it is not displayed in a deformed manner. Further, before the user specifies the object N to be heated by the touch operation, even if the user operates the upper surface operation unit 5, the area of the first display area 40 is reduced or deformed. The first icons 20A and 20B, the second icons 60A to 60F, and the like in the first display area 40 that cannot be moved and displayed and are always displayed in a predetermined area at a predetermined position. Can be touched.

The first display area 40 and the second display area 41 correspond to the touch detection range 39. FIG. 4 shows a case where two objects to be heated N (N1, N2) are placed on the heating coils 10 that are not adjacent to each other, and the first object for specifying the object to be heated N to be heated is shown. The two icons 20 are a first icon 20A displayed on the left side and a first icon 20B displayed on the right side. Hereinafter, when these two or more first icons are collectively referred to, reference numeral 20 is used as the first icon.

Since the user can specify the heated object N to be heated by a touch operation and set cooking conditions such as heating power from the portion of the touch detection range 39 of the display screen 30, the upper surface operation unit 5 can display this display screen. 30 parts are included. For this reason, the range of the upper surface operation part 5 is as having shown with the broken line in FIG. 1 and FIG.

In FIG. 2, a drive circuit 37 drives the liquid crystal display substrate of the display screen 30 and supplies power to the liquid crystal display screen.

Thus, as shown in the first embodiment, the feature of the present invention is that the user can clearly imagine the position where the heated object N is placed by using the first display area 40. It is like that. That is, the placement position of the heated object N with respect to the heating area 8 is a position corresponding to the actual left and right position in the left and right direction in the display screen 30, and the first icon 20 is included in the first display area 40. Therefore, the actual placement position of the heated object N and the images of the first icons 20A and 20B in the display screen 30 are likely to match.

The vertical dimension and the horizontal dimension of the (heating area 8) of the top plate 3 shown in FIG. 3 are about 1: 2, whereas the first display area 40 in the display screen 30 shown in FIG. The vertical dimension X and the horizontal dimension Y are about 1: 3. In other words, the first display area has a shape compressed in the vertical direction as compared to the aspect ratio of the actual top plate 3, but this is the vertical direction (that is, the front side as viewed from the user, This is because in the back side, there are almost no cases where a plurality of objects N to be heated are arranged and cooked at the same time, and rather there are many cases where they are placed side by side in the horizontal direction, so that the horizontal direction can be identified more clearly. . There is no problem even if the first display area is the same as the aspect ratio of the top plate 3 (heating area 8), that is, it has a similar shape.

When one object N1 is placed on the four adjacent heating coils 10, the shape of the bottom surface of the object N1 is schematically represented by a circular figure 20N1 as shown in the left part of FIG. The heating coil 10 that can be expressed and has a possibility of heating operation is expressed by a broken-line circular image diagram 46 and includes these figures and is referred to as a first icon 20A. When one heated object N2 is placed on the six adjacent heating coils 10, the shape of the bottom surface of the heated object N2 is an elliptical figure 20N2 as shown in the right part of FIG. The six heating coils 10 are displayed in a broken-line circular image diagram 46, and these graphics are referred to as a first icon 20B. When the figures 20N1 and 20N2 are collectively referred to, a reference numeral 20N is attached.

When one heated object N is placed on a plurality of adjacent heating coils 10, as described above, the image diagram 46 of the heating coil 10 and the image diagram 20N of the heated object N are configured. 1 icon 20 (20A, 20B) appears on the display screen 30 at the front end of the top plate 3. The relative sizes of these image diagrams are the relative sizes of the actual heating coil 10 and the object N to be heated. It doesn't have to match perfectly. Rather, when the user places a heated object N such as a pan on the top plate 3, the position is roughly known, so that the display screen 30 increases the visibility. May be displayed prominently as large as possible so that can be touched with a fingertip.

The main body 1 has a main body housing 1A that is formed in a box shape by connecting a plurality of metal thin plates by fixing means such as spot welding or screwing, and has an upper surface opened. Inside the casing 1A, the induction heating coils 10 described above are regularly arranged side by side so as to be as close to the lower surface of the top plate 3 as possible. A plastic upper decorative plate 13 and a plastic lower decorative plate 14 are provided on the right side of the front surface of the main body 1. The two decorative plates 13 and 14 are arranged on the front wall (not shown) of the housing 1A. 2) are attached individually with screws or the like. In addition, you may provide the operation button 15A of the main power switch 15 mentioned later and the heating power adjustment dial (not shown) at the time of induction heating cooking in the part of this upper decoration board 13. FIG.

On the left side of the internal space of the main body 1, a grill chamber (also referred to as a grill storage, not shown) of the grill portion 6 is disposed. The grill chamber is partitioned by a metal plate. On the left side of the front surface of the housing 1A, a grill door 6A that covers the front opening of the grill chamber so as to be openable and closable is supported on the main body 1 by a rail mechanism and is openable and closable (movable in the front-rear direction). Yes.

Further, a first intake port 16 is formed on the rear right corner side of the housing 1A. The intake port 16 includes a heating source composed of the grill chamber and the induction heating coil 10, the display screen 30, a control circuit board (not shown), a high-frequency power supply circuit board (not shown), and It serves as a cooling air inlet for cooling the induction heating coil 10. In addition, although not shown in figure, the electric blower for generating the cooling air is installed inside the housing 1A. Further, a second intake port (not shown) is provided on the rear surface of the housing 1A for the same purpose as the first intake port 16.

Further, an exhaust port 17 for exhausting the cooling air introduced into the main body 1 is formed on the upper surface of the rear right side of the housing 1A. Further, an exhaust port 18 is formed on the upper surface on the left side of the rear portion of the housing 1A for naturally exhausting hot air from the grill chamber by its upward flow. The two exhaust ports 17 and 18 are entirely covered with a metal net, an armor door, or the like so that a user's finger or other foreign matter does not enter.

In FIG. 1, reference numeral 15 </ b> A denotes an operation button arranged on the upper surface operation unit 5, and a main power switch 15 described later can be opened and closed (ON / OFF) by pressing this button.

(Control part of induction heating cooker)
In FIG. 2, 21 is a power line connected to a 200V commercial power source, 15 is a main power switch that is opened and closed by the user by the operation button 15A, and 22 is a power circuit to which electric energy is supplied via the main power switch. , 23 is a control device mainly composed of a microcomputer to which a predetermined constant pressure current is supplied. The microcomputer is composed of four parts: an input unit, an output unit, a storage unit, and a CPU (arithmetic control unit). In the storage unit, energization control programs corresponding to various cooking menus are stored in advance. (Stored). Further, apart from the storage unit (ROM, RAM) of the microcomputer, a large-capacity storage device 23R for recording abnormality monitoring information is incorporated.

In both induction heating cooking by the induction heating coil 10 and electric radiant heat cooking of the grill portion 6, the control device 23 monitors whether there is an electrical abnormal state. Furthermore, the control device 23 obtains temperature information from a temperature detection circuit 24 that constitutes a part of the abnormality detection means ES, and monitors whether or not the main part of the cooking device has an abnormally high temperature. For example, the display means (display screen) 30 is mainly composed of one liquid crystal display substrate in order to form one screen in the first display area 40 to the third display area 42, but it is relatively hot. Therefore, it is monitored through the temperature detection circuit 24 so as not to exceed a predetermined temperature (for example, 60 ° C.), and when it exceeds the predetermined temperature, the abnormal standby state is determined by the control device 23 (60 ° C.). Only if it is in the range of ~ 65 ° C). In this abnormal preparatory state, the heating operation is not immediately stopped, but is improved by increasing the blowing capacity of the electric blower (cooling fan) that cools the internal space of the housing 1A. However, when the temperature exceeds 65 ° C., the controller 23 determines that an abnormal state has occurred, and immediately stops the heating operation. Therefore, for example, the power supply of the inverter circuit 25 (described later) is cut off.

Then, abnormality monitoring data of a main part of the induction heating cooker (temperature of the display screen 30 described above as an example) in at least a period from such an abnormal preliminary state to an emergency stop is stored in the storage unit 23R of the control device 23. Are sequentially stored in time series. The abnormality monitoring data stored in the storage unit 23R starts to be acquired from the time when the main power switch 15 is turned on, and reflects the history of electrical and physical changes until cooking is stopped. Therefore, the cooking menu selected afterwards (described later, “boiled water”, “boiled”, “fried food”, etc.) and information on the heating power of induction heating are also recorded in time series. If an emergency stop occurs due to an abnormal condition on the way, the abnormality monitoring data is stored in the storage device 23R until that time. When selecting the cooking menu (boiled water, stewed, etc.), it may be referred to as “selecting a cooking mode”.

In FIG. 2, reference numeral 25 denotes an inverter circuit for supplying a high frequency current to the induction heating coil 10. The induction heating coil 10 is connected in a known resonance circuit to which a resonance capacitor C or the like is connected. A plurality of inverter circuits 24 may be provided. For example, when there are a total of 40 induction heating coils 10, they are divided into two groups of 20 each, the first group is in charge of the first group, and the second inverter circuit is in the second group. May be in charge. Further, many inverter circuits may be provided.
When a plurality of inverter circuits 25 are provided, they are driven independently from each other by the control device 23 so that unnecessary inverter circuits 25 are not driven. That is, induction heating can be controlled in units of each heating coil 10.

Reference numeral 27 denotes a drive circuit for driving a plurality of radiant electric heaters, for example, sheathed heaters 26, installed in the inside of the grill of the grill portion 6. The sheathed heater 26 is horizontally installed, for example, near the ceiling and the bottom of the inside of the grill cabinet.

28 removes smoke emitted from the grill warehouse by heating an inlet portion of an exhaust duct (not shown) extending from the grill warehouse to the exhaust port 18 or a catalyst (not shown) installed in the middle thereof. It is a catalyst heater for promoting the action, and promotes the redox action by heating a catalyst (not shown). Reference numeral 29 denotes a drive circuit for the catalyst heater.

Reference numeral 31 denotes a speech synthesizer that synthesizes electronically created speech, which informs the user of operation guidance to the user, a warning notification when an abnormality occurs, and so forth from the speaker 32 each time. This voice synthesizer is a part corresponding to the “voice guide device” in the present invention.

Reference numeral 24 denotes a temperature detection circuit. This temperature detection circuit includes the temperature of the heated object N on the top plate 3 heated by the induction heating coil 10, the temperature of the top plate 3, the ambient temperature inside the grill box, the inverter circuit 25, the display screen 30, and the like. Temperature detection information is received from a plurality of temperature sensors (not shown) for detecting the temperature, and the temperature detection result is sent to the control device 23. The temperature sensor (not shown) may be either a non-contact type such as an infrared sensor or a contact type such as a thermistor, and these are used alone or in combination.

33 is a steam supply device for supplying high temperature steam to the inside of the grill cabinet, and steam cooking can be performed in the grill cabinet by the high temperature steam.

Reference numeral 34 denotes a clock circuit, also called a real-time clock, which is supplied with power from a dedicated power source (built-in battery) BT1 different from the power circuit connected to the main power switch 15, and is driven for a long period of time. It has become. This may be, for example, a radio-controlled timepiece. If there is always a request from the control device 23, the current date and the exact time are notified in seconds, and the correct date and time are set in the manufacturing stage of this induction heating cooker. . Therefore, even if the main power switch 15 of the induction heating cooker CH is turned off and then the main power is turned on again, there is a function of constantly transmitting the latest correct time to the control device 23 without being affected by the time information of the clock circuit. . For this reason, the abnormality monitoring information recorded in the storage device 23R of the control device 23 is always recorded and stored at the same time. As a result, when a specialized maintenance / repair company or manufacturer analyzes the data stored later, it is possible to accurately grasp the passage of time.

Reference numeral 35 denotes a vibration sensing device that detects a shake at the time of occurrence of an earthquake. When a predetermined seismic intensity (acceleration) is detected, a vibration detection signal is sent to the control device 23, and the control device 23 receives the signal to generate an earthquake. The power supply of all the heating means in use is instantaneously cut off.

In FIG. 2, reference numeral 36 denotes a material detection (determination) unit for the object to be heated N, and a current detection unit that flows through the induction heating coil 10. Note that input current information is also input from the power supply circuit 22 upstream of the inverter circuit 25. In addition, since it is well known to determine the material of the object to be heated N by comparing the current on the input side and the current on the high frequency output side in this way, detailed description is omitted, but this material detection (determination) means It can be determined whether the object N to be heated is made of a nonmagnetic material such as aluminum or copper, or a magnetic material such as iron or stainless steel.

In FIG. 2, reference numeral 11 denotes a heated object placement determination unit that determines whether the heated object N is placed immediately above the heating coil 10. In this determination unit, sensors 12 are arranged corresponding to the respective heating coils 10. The sensor uses an optical sensor as described above, but other methods may be used.

The sensors 12 are installed one by one in a cavity secured in the center of each heating coil 10. In addition, it may be provided between two adjacent heating coils 10 or may be provided or changed one by one at the center of the four adjacent heating coils 10. Although FIG. 3 also shows an example in which one sensor 12B is provided at the center of four adjacent heating coils 10, installation of both 12A and 12B is not essential.

When the bottom diameter of the object N to be heated by induction heating is made as small as the outer diameter of the heating coil 10, it is desirable to arrange the sensor 12 at the center of the heating coil 10, but the diameter is several centimeters. In reality, there are almost no cases where an object to be heated having a small pan bottom is used. In Embodiment 1, the smallest object N to be heated has a maximum bottom diameter of about 18 cm to 20 cm. And the relationship is such that one heated object N1 covers the upper side of at least four heating coils 10. Therefore, the sensor 12 can be changed between the two adjacent heating coils 10.

3 has a maximum diameter of the bottom surface in contact with the top plate 3 of about 22 cm and a bottom surface shape close to a perfect circle, but the right side of the object to be heated 1 indicated by the broken line in FIG. The to-be-heated object N2 has a maximum diameter of the bottom surface in contact with the top plate 3 of about 30 cm, and the bottom surface shape is close to an ellipse. As described above, the object to be heated N2 having an elliptical or rectangular bottom shape can also be heated by induction.

In FIG. 4, 45 is an operation stage in which the first icon 20 is displayed when the heated object N is selected, and the user touches the icon 20 to select the heated object N such as a pan. This is an advice information display section (guide area) that displays character information 45A, and appears appropriately in the third display area 42.

4, 46 is an image diagram of the heating coil 10 displayed when the article N to be heated is placed on the heating area 8 of the top plate 3 as described above. Reference numeral 48 denotes position display information indicating the outline of the position of the object to be heated N when it is placed on the heating area 8 of the top plate 3, and the left and right center lines of the heating area 8 of the top plate 3. When placed on the left range from CL, “left” is displayed, and when placed on the left and right center line CL, “center” is displayed. In these displays, the heated object placement determining unit 11 transmits information on the position (coordinates) of the heating coil 10 that has detected that the heated object N is directly above to the control device 23, and the control device 23 receives the information. It is displayed by processing and transmitting position information to the display screen 30.

In FIG. 4, 49 is order information indicating the order in which the article to be heated N is placed on the heating area 8 of the top plate 3. “Latest” is displayed on the first icon 20A of the article N1 to be heated most recently. In this display, the heated object placement determination unit 11 transmits detection information from the heating coil 10 that has detected that the heated object N is directly above, to the control device 23 each time. Since the order is stored in the storage device, the first icon 20 on the display screen 30 indicates which of the heated objects N is placed most recently even if different heated objects N are placed one after another. Can be confirmed by the order information in the vicinity.

In FIG. 4, reference numeral 50 denotes a help mode key that appears in the second display area 41 at the timing when the object N is placed on the heating area 8 of the top plate 3 and the first icon 20 is displayed. (Fourth icon). When the help mode key is touched, the voice guide device 31 informs the user at the stage of touching the first icon of information that assists the user in selecting the heating target N to be heated. The

FIG. 6 is a plan view showing an operation process of display screen 30 in the induction heating cooker according to the first embodiment of the present invention. In FIG. 6, FG indicates a user's fingertip. 51, a reaction region in the left direction set on the display screen 30 (top plate 3) so that the control device 23 first detects the direction of the fingertip when the user touches the fourth icon 50 with the fingertip FG. (Detection unit) and appears at a position close to the fourth icon 50. Similarly, reference numeral 52 denotes a rear reaction region (detection unit) set at an adjacent position on the rear side from the fourth icon 50.

In FIG. 6, the user places the fingertip FG on the fourth icon 50 and moves it on the top plate 3 as it is (touched) to the left as shown in FIG. 6, and the fingertip FG reacts in the left direction. At the moment of leaving the display screen 30 in the area (detection unit) 51, the control device 23 determines that the user intends to select the first icon 20A (on the left side), and immediately induces a guide mark (such as an arrow) ( (Graphic) 53 is displayed on the display screen 30 (at this time, the display of the first icon 20B on the right side is turned off). Then, when the fingertip FG touches the first icon 20A, when the fingertip is released, the control device 23 detects the coordinates at which the fingertip has been released, determines that the left heated object N1 has been selected, and FIG. As shown, the screen is switched to a screen on which the second icons 60A to 60F, the third icons 65 to 67, the fifth icon 70, and the like are displayed.

Next, in FIG. 7, the user places the fingertip FG on the fourth icon 50 and moves it on the top plate 3 as it is (touched) as shown in FIG. ) When the fingertip FG leaves the reaction area 52 at the position 52), the control device 23 determines that the user intends to select the first icon 20B on the right side, and immediately guides an arrow or the like. A mark (figure) 53 is displayed on the display screen 30. At the moment when the guidance mark (figure) 53 is displayed, the display of the first icon 20A on the left side is turned off.

In the following description, it is assumed that the left first icon 20A is displayed and the right first icon 20B is not displayed in FIG.
In this first stage, when the user places the fingertip FG on the fourth icon 50 and then removes the fingertip from the fourth icon 50, and the parts other than the fourth icon 50 and the first icon 20A (however, , In the touch detection range 39), and when the fingertip is released as it is, in any case, the coordinate information of the specific position in the touch detection range 39 where the fingertip is separated is naturally the position coordinate of the first icon 20A. In contrast, the control device 23 does not determine that the user has selected the first icon 20A.

In that case, a voice guide is executed from the voice guide device 31 such that the user touches one of the first icon 20A or the second icon 20B on the left side and selects an object N to be heated. The Thereafter, when the user touches a portion other than the first icon 20A in the touch detection range 39 again, the voice guide device 31 guides again by voice, and such operations are repeated to repeat the first icon 20A. The voice guide device 31 informs the user of reference information so that the first icon 20A can be touched by voice until the user touches.

In FIG. 4, since the user has previously set the “beginner mode” by the upper surface operation unit 5, the fourth icon 50 is displayed in synchronization with the display of the first icon 20. It was. As described above, the operation mode of the voice guide device 31 can be selected from the normal mode and the beginner mode by the selection operation of the upper surface operation unit 5. Note that selection means such as a push button switch may be provided in the main body 1 and the operation mode may be selected with the switch. When the beginner mode is set, the voice guide contents of the voice guide device 31 are performed in more detail than in the normal mode. In addition, the display screen 30 also displays unique to the beginner mode. In addition, the technique of the heating cooker which can select such a beginner mode and a normal mode is already known, for example by Japanese Patent Publication (2009-243771, 2009-193822).

When the user has set the “normal mode”, as shown in FIG. 5, the fourth icon 50 is not displayed in synchronization with the display of the first icon 20. In other words, a skilled user can touch the first icon 20 without hesitation after relying on the fourth icon after placing a pan or the like of the object N to be heated on the top plate 3 (however, he / she can use the skillful use) Although it is a person, if the person has poor vision, for example, there is a possibility that the first icon 20 cannot be surely touched by one touch).

Next, FIG. 8 will be described. FIG. 8 is a plan view showing an operation process of the display screen 30 of the induction heating cooker of FIG. The state after selecting the first icon 20 through the processes already described with reference to FIGS.

In FIG. 8, 60 is an icon display area for setting thermal power displayed in the first display area 40 (see FIG. 4). In this display area, six levels of thermal power icons 60 </ b> A to 60 </ b> F (second icons) for specifying the heating capability (also referred to as thermal power) during induction cooking are displayed. From the icon 60A for the minimum thermal power to the icon 60F for the maximum thermal power are arranged in a line. The minimum thermal power is, for example, 150 W, and the maximum thermal power is 3000 W. However, the maximum thermal power value and the minimum thermal power value actually commanded by the control device 23 vary depending on the number of heating coils 10 used for heating one object N.

In FIG. 8, 61 and 62 are adjustment icons that can increase or decrease the thermal power after the thermal power is set by the one-touch type thermal power icons 60A to 60F. For example, if you touch the thermal power icon 60C on which the number “5” indicating the thermal power level is displayed and set it to the fifth thermal power value, then you want to lower that thermal power by one level, there is a negative display. Touch the adjustment icon 61 of “fire power reduction”. Conversely, when the heating power is increased, the adjustment icon 62 may be touched. Since only 11 stages of thermal power can be set, the adjustment icons 61 and 62 can only be adjusted once. For example, an intermediate thermal power “2” between the minimum thermal power 1 and the thermal power 3 can only be set. Reference numeral 63 denotes character information indicating that the power setting icon is used, and is not an icon. These thermal power icons 60A to 60F and the adjustment icons 61 and 62 are one of the “second icons” in the present invention.

In FIG. 8, 65, 66, and 67 are cooking mode icons (third icons) in which the driving pattern of the heating coil 10 can be selected when the second icon 20 is displayed on the display screen 30. As will be described later, this icon is also displayed on the display screen 30 by the control device 23 at a necessary timing.

In FIG. 8, reference numeral 65 denotes an icon for selecting the stew mode, which is displayed as “normal stew mode”. Reference numeral 66 denotes an icon for selecting a boiled mode, which is displayed with characters “boiled mode”. Reference numeral 67 denotes an icon for selecting a water heater mode, which is displayed with characters “water heater mode”.

In FIG. 8, reference numeral 70 denotes an information key (fifth icon). When the fifth icon is touched, the contents of the cooking mode in which the driving pattern of the heating coil can be selected for the user at the stage of touching the second icon, for example, the driving pattern of the heating coil 10 in the stew mode (Also referred to as an energization pattern), at least one of a good setting method of cooking conditions for cooking to save power consumption, a precaution when setting thermal power, and a precaution for safety during cooking Information on the two is notified from the speech synthesizer (speech guide device) 31. Further, in synchronization with the notification, the display screen 30 may be switched, or a part of the display area of the display screen 30 may be changed and displayed in characters, graphics, or the like. These cooking mode icons (third icons) 65, 66, 67 and a fifth icon 70 are displayed in the first display area 40 (see FIG. 4).

In FIG. 8, 71 is display information indicating that induction heating is being performed, and 72 is a reference image diagram illustrating the number of the heating object N and the number of heating coils 10 involved in the heating. The display information 71 and the reference image FIG. 72 are displayed in the first display area 40 (see FIG. 4). However, since there is no function as an icon, no input can be made even if the user touches. .

In FIG. 8, reference numeral 75 denotes a next screen command key (eighth icon), which is displayed in the second display area 41. The eighth icon appears when the firepower is set in FIG. However, in the case of a cooking mode (not shown in FIG. 8) such as “automatic fried food cooking” performed by heating edible oil, the setting of the thermal power is set by the cooking control program of the control device 23 according to the cooking mode. In this case, the eighth icon 75 appears on the display screen 30 when the cooking mode icon (third icon) 65, 66, 67 is touched and the cooking mode is selected. Although not shown in the drawing, the display screen 30 on which the eighth icon 75 appears is an icon that allows a desired cooking time to be set by one touch, as well as the heating power icons 60A to 60F and the adjustment icons 61 and 62, and the setting thereof. Both the icons that can extend or shorten the set time are displayed (note that these time setting icons are referred to as “ninth icons”, but this is one of the second icons).

In the various icons 20, 50, 60A to 60F, 65 to 67, 70, etc. in the first embodiment, the touch input is not effective at the moment when the user touches with a finger, and then the finger is released. The touch switch method is used to confirm that the touch is instantaneous. Note that the technology of such a touch panel device is well known, and is already known, for example, in Japanese Patent Publication (Heisei 11-175212). In the following description, touching is described in the description of input using various icons of touch-type input, but releasing from the touched state is not described each time.

In FIG. 8, reference numeral 80 denotes a partition frame formed on the top surface of the top plate 3 so as to surround the display screen 30 and corresponding to the outermost peripheral portion of the display screen 30. This partition frame has a bank-like shape that rises about 1 to 2 mm on the upper surface of the top plate 3. The purpose of the partition frame 80 is to allow a user with weak visual acuity, a visually impaired person, or the like to sense the position and contour of the display screen 30 with a fingertip. It is made of an electrically insulating material such as heat resistant resin or rubber, and is adhered to the upper surface of the top plate 3.

Since the fourth icon 50 and the fifth icon 70 described above are displayed at the right corner of the partition frame 80, the user smoothly places his fingertip at the right corner of the display screen 30. Can do. For this reason, the voice guide device 31 can guide the fingertip to the fourth icon 50 or the fifth icon 70 even for a user with weak vision, a visually impaired person, or the like. For example, the voice guidance device 31 reads: “Guidance keys are displayed in the lower right corner of the display screen. Touch them. After that, voice guidance will be provided so that you can immediately touch the icon indicating the position of the pan. In order to perform voice guidance such as “I will do”, the partition frame 80 performs an important function of indicating a starting point (guide) for guiding the fingertip.

Although not shown in FIGS. 1 to 9, in addition to the first to fifth icons, the display screen 30 has a start key (sixth key for instructing the controller 23 to start an induction heating operation). Icon 73) and a stop key (seventh icon) 74 for instructing to stop the induction heating operation are displayed at appropriate timing. Note that the start key (sixth icon 73) is displayed on the display screen 30 in which the eighth icon 75 appears on the display screen 30, so that the user can heat up at the stage where both the thermal power and time can be input. A command to start cooking can be given to the control device 23.

Next, FIG. 9 will be described. FIG. 9 is a flowchart showing the control operation of the control device 23 of the induction heating cooker CH of FIG.
In FIG. 9, S <b> 1 to S <b> 21 are operation steps based on the control program of the microcomputer that constitutes the core of the control device 23.

Hereinafter, description will be made in order from the start S1. When the operation button 15A of the main power switch 15 is pressed, the main power switch 15 is closed (S2).
When the control device 23 detects that the main power switch 15 is closed in step S2, the power circuit of the liquid crystal display screen constituting the display screen is driven by the drive circuit 37, and the display screen 30 is activated. The heated object placement determination unit 11 and the material detection (determination) means 36 for the heated object N are also activated. Furthermore, the voice guide device 31 is also activated to guide the user to place the article N to be heated used for cooking on the top plate 3 (S3).

When the user places one heated object N1, for example, a metal pan having a circular bottom, on the top plate 3, the heated object placement determination unit 11 places the heated object N on which heating coil 10. To find out where was placed. As described above, the sensor 12A is disposed at the center of each heating coil 10 (there is another sensor 12B at the center of the four adjacent heating coils 10). The heated object placement determination unit 11 detects the presence of the heated object N1 based on a detection signal from the sensor 12A arranged in the heating coil 10 located immediately below N1 (S4). It should be noted that a metal object smaller than the prescribed size, such as a spoon, is not discriminated from the heated object N at this stage.

Next, when presence of the to-be-heated object N is detected, it progresses to step S5 and the mounting position and material determination of the to-be-heated object N are performed. When a very large iron plate is placed (for example, when an iron plate having an area covering the adjacent 10 heating coils 10 is placed), it is determined that the object N is inappropriate for heating. Is done. In addition, an object to be heated N that is determined to be formed of a non-magnetic material such as copper or aluminum, or a portion that occupies a considerable area of the bottom surface, is also determined as an inappropriate object to be heated N, and an error display is displayed. In step (S20), the display screen 30 informs that the object to be heated N is displayed on the display screen 30 and cannot be used from the voice guidance device 31.

If the result of the determination in step S5 is OK, then, in order to show the placement position of the object to be heated N schematically and conceptually on the display screen 30, the approximate placement position of the object to be heated N is shown. A first icon 20A for display is displayed (S7). The state where the first icon 20 is displayed is shown in FIG. 4, for example (however, in the state where only one heated object N is placed, the right first icon 20B is not displayed).

The voice guide device 31 touches the first icon 20 and requests an operation of selecting the object to be heated N (S8). Even if one object N is placed, the control device 23 does not know whether or not the user intends to start cooking immediately, so such step S8 is provided. For example, the user puts one heated object N for the purpose of induction heating cooking, but after that, to-be-heated object N such as vegetables, meat, soup or the like, There are various situations, such as moving another cooking utensil that was placed in, so it is a step to confirm the user's intention whether going to the step to set the cooking conditions immediately is there.

Next, when it is detected that the user has touched any part of the display screen 30 (S9), the control device 23 analyzes a signal from the detection electrode arranged in the touch detection range 39, and the touched position And the coordinates of the currently displayed first icon 20 are determined (S10).

Next, in step S <b> 11, it is determined whether or not there is a difference between the touch position and the position of the first icon 20. In the position determination here, the coordinates of the allowable range (reaction range) are set in advance even if the coordinate values corresponding to both the positions of the first icon 20 and the touch position do not completely match. A determination is then made as to whether or not it is within that range. Accordingly, even if the position of the fingertip FG is slightly shifted back and forth and left and right, it is determined that the touch has been made.

If it is determined in step S11 that there is no difference in position, the process proceeds to the next step S12.
On the other hand, if the result of the determination is that there is a difference between the two positions, the process proceeds to step S19, where the voice guide device 31 voices that the touch position is different (away from the first icon). To inform. In this case, in step S10, since it is known from the coordinate value whether there is a difference between the touch position and the position of the first icon 20, the position touched immediately before to match the coordinate value. As a reference, information such as whether it is more rightward, leftward, or rearward may be notified. Then, the process returns to step S9.

If the user has not set the beginner mode and has started using the normal mode, but it is determined in step S11 that there is a difference in position, the user is forcibly switched to the beginner mode, and step S9 is performed. Then, the fourth icon 50 is displayed. As shown in FIGS. 6 and 7, the fingertip is initially positioned at the right front corner of the display screen 30 having the fourth icon, that is, the corner of the partition frame 80. From there, it is also possible to guide the fingertip to the position of the first icon 20 while performing voice guidance with the voice guidance device 31.

Immediately after it is determined in step S11 that the first icon 20 has been touched through the above steps, the process proceeds to step S12, and as shown in FIG. 8, the second icons 60A to 60F and the third icon are displayed. The display contents can be selected from 65 to 67.

  Specifically, when the heating power value is set and the heating operation start command is given by the second icon 60A to 60F or the third icon 65 to 67 in the next step 13, the placement position of the heated object N The high frequency power is supplied from the inverter circuit 25 only to the specific heating coil 10 in (1), and the heating operation is started (S14). When the heating stop operation is performed or a set time called timer cooking is exceeded (S15), the inverter circuit 25 is stopped (S16). During the period of induction heating by the inverter circuit 25, the material detection (judgment) means 36 of the object to be heated N also detects the output side current of the heating coil and also detects the input current on the power supply circuit 22 side. The detection result is continuously transmitted to the control device 23 so that the intended heating ability (thermal power) is always exhibited. Therefore, the control device 23 can perform heating driving by controlling the output of the inverter circuit 25 within the target range.

After the inverter circuit 25 is stopped, an inquiry is again made to the heated object placement determination unit 11 as to whether or not a new heated object N (for example, N2) has been placed. And it waits as it is only for predetermined time (for example, 10 minutes), and waits for the mounting detection signal of the to-be-heated object mounting determination part 11 to receive the to-be-heated object N (N2).

If it is determined in step S17 that no new object to be heated N (N2) has been detected, and no object to be heated N (N2) has been placed, the process proceeds to the next step S18. In step S18, when the user turns off the main power switch 15 or a certain time (for example, 30 minutes) has passed, the temperature detection that the temperature of the top plate 3 has decreased to a safe temperature. At the stage detected by the circuit 24, the main power switch 15 is automatically turned off and the process ends (S19).

However, if a new object to be heated N2 is placed in step S17, the process returns to step S5 to determine the placement position and material of the object to be heated N2.

(Summary of Embodiment 1)
As is clear from the above description, the induction heating cooker CH shown in the first embodiment implements the first invention.
That is, the induction heating cooker CH in Embodiment 1 is
A main body portion 1 having a top plate 3 on which an object to be heated N is placed;
A plurality of heating coils 10 housed inside the body portion;
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A to-be-heated object placement determination unit 11 that determines whether or not a to-be-heated object is placed immediately above the heating coil 10;
An input operation unit (upper surface operation unit) 5 provided on the upper surface of the main body unit 1;
A main power switch 15 provided in the main body 1;
A voice guide device 31 for notifying a user of the input operation unit 5 by voice information related to the operation;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25 and the voice guide device 31,
The input operation unit 5 has a display screen 30 on which a plurality of types of icons for touch input are displayed.
The control device 23 displays the first icon 20 in the first display area 40 of the display screen 30 based on the result of the placement of the heated object N determined by the heated object mounting determining unit 11. Let
The voice guide device 31 informs a user of reference information for touching the first icon 20,
When the control device 23 detects that the user has touched the first icon 20, the control device 23 displays second icons 60 </ b> A to 60 </ b> AF for selecting a cooking condition on the display screen 30, and then the second icon By detecting that the user has touched the icon, the heated object N corresponding to the first icon 20 is selected as a heating target, and heating conditions can be input.

Therefore, according to the induction heating cooker of the first embodiment, when the user touches a predetermined position of the touch detection range 39 located at the position corresponding to the display screen 30 of the input operation unit 5, the user desires The first icon 20 can be selected, but if the touched position does not coincide with the position of the icon 20, the position shift is detected and the position of the first icon 20 is detected by the voice guide device 31. Therefore, the user can easily select the first icon 20 displayed in the placement status display area (first display area) 40 of the display screen 30 on the upper surface operation unit 5, and Can be improved.

Further, as is clear from the above description, the induction heating cooker CH shown in the first embodiment implements the second invention.
That is, the induction heating cooker CH in Embodiment 1 is
A main body portion 1 having a top plate 3 on which an object to be heated N is placed;
A plurality of heating coils 10 housed in the body 1;
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A to-be-heated object placement determination unit 11 that determines whether or not a to-be-heated object is placed immediately above the heating coil 10;
An input operation unit 5 provided on the upper surface of the main body,
A main power switch 15 provided in the main body 1;
A voice guide device 31 for notifying a user of the input operation unit 5 by voice information related to the operation;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25 and the voice guide device 31,
The heating coils 10 are regularly arranged so as to be adjacent to each other and have the same outer diameter,
The input operation unit 5 includes a display screen 30 on which a plurality of types of icons 20 and 60 for touch input are displayed.
In the control device 23, the object to be heated placement determination unit 11 is located at a position different from each other and at least on two adjacent heating coils 10, the first object N1 and the second object N2 to be heated. On the basis of the result of determining that each is placed, the first icons 20A and 20B are simultaneously displayed in two places in the display area (first display area 40) of the display screen 30,
The voice guide device 31 informs the user of reference information for performing a touch operation on the first icons 20A and 20B.
When the control device 23 detects that the user touches the first icon for the first object N1 among the two first icons 20A and 20B, the display screen 30 The second icon 60 for selecting the condition of cooking by the first heated object N1 is displayed, and then the user touches the second icon 60 to detect the first icon. The corresponding first object to be heated N1 is selected as an object to be heated, and heating conditions can be input.
Furthermore, during the period when the second icon 60 for selecting the cooking condition by the first heated object N1 is displayed, the control device 23 selects the cooking condition by the second heated object N2. The second icon 60 is not displayed.

Therefore, according to the induction heating cooker of the first embodiment, when the user touches a predetermined position on the display screen 30 corresponding to the first icon 20A in order to select the first heated object N1, the touch is performed. If the position of the first icon 20A does not coincide with the position of the first icon 20A, the voice guide device 31 informs the voice guide device 31 of information indicating the position of the first icon 20A. The first icon 20A displayed in the status display area (first display area 40) can be easily selected by touching the user, and operability can be improved. Moreover, even if the icons 20A and 20B for selecting the object to be heated are displayed at two or more places at the same time, the cooking of the first object N1 is performed by selecting the first icon 20A and 20B. During the period when the second icon 60 for selecting the condition is displayed, the second icon 60 for selecting the cooking condition by the second heated object N2 is not displayed, so the first heated object N1. The display area of the display screen 30 can be used effectively for the setting of the cooking conditions, and the user is not confused when setting the cooking conditions of the two objects to be heated N1 and N2. For this reason, it is possible to prevent the operation method from becoming complicated, and an easy-to-understand operation can be realized.

(Significance of details of Embodiment 1)
With the specific configuration of the first embodiment, the following secondary effects can be expected.
(1): The control device 23 includes a microcomputer that performs a control operation, and activates a control program of the microcomputer when the main power switch 15 is turned on by a user, so that a heated object placement determination unit 11 is displayed on the display screen 30 with the first icon 20 on the display screen 30, and after the icon 20 is displayed, the voice guide device 31 touches the first icon 20. Information for reference for operation (for example, the direction in which the first icon 20 is located when viewed from the touched position) is notified. Therefore, even if the user makes a mistake in the first touch position, the voice guide device 31 Since it is guided by voice, a sense of security can be increased and operability can be improved.

(2): The control device 23 turns off the display of the first icon 20 on the display screen 30 when detecting that the user has touched the first icon 20, and the heating power during cooking Since a plurality of firepower keys (60A to 60F: firepower icons) whose levels can be selected by a touch operation are displayed as the second icon, the icon 20 that has become unnecessary after the first icon 20 is touched. The display area of the display screen can be secured by turning off and can be used for thermal power setting, which is an important cooking condition. For this reason, the display on the display screen is simplified, and it can be expected to improve the operability for the user.

(3): The control device 23 turns off the display of the first icon 20 on the display screen 30 when detecting that the user has touched the first icon 20, and heats during cooking. A plurality of time setting keys that can be selected by a touch operation can be displayed as the second icon. For this reason, after touching the first icon 20, the unnecessary icon 20 can be erased to secure a display area on the display screen, which can be used for setting cooking time, which is an important cooking condition. For this reason, the display on the display screen is simplified, and it can be expected to improve the operability for the user.

(4): After the placement status of the object N to be heated is displayed on the display screen 30 with the first icon 20, the voice guide device 31 has a specific position on the display screen 30 (fourth icon 50). The information for guiding the fingertip to the display position of the first icon 20 can be notified. For this reason, even if the user is unfamiliar with the use of the induction heating cooker or the user who has a visual impairment and the first icon 20 is not clearly visible, the fingertip to the display position of the first icon 20 It can be expected to improve the user's sense of security and operability.

(5): The control device 23 has at least information recommending that the first icon 20 be touched or information indicating operational precautions when the first icon 20 is displayed on the display screen 30. Any one of them is displayed as characters or the like in the guide area 45. For this reason, even if it is a user unfamiliar with the use of the induction heating cooker, a user with hearing impairment, or a user who cannot clearly understand the meaning and operation steps of the first icon 20, the first icon 20 When is displayed, it can be expected to prompt the user to perform a touch operation and improve the user's sense of security and operability.

(6): It is provided with means for selecting one of a normal mode and a beginner mode as an operation mode of the voice guide device 31 by a user's selection operation, and the voice guide device 31 is in the beginner mode. When the first icon 20 is displayed even if it is a beginner unfamiliar with the use of the induction heating cooker, since the user informs the reference information for the touch operation on the first icon 20 In addition, it can be expected to support the user's touch operation and improve the user's sense of security and operability.
In the first embodiment, the guidance mark 53 shown in FIG. 6 is also displayed as visual information on the display screen 30, so that it can be expected that the user's sense of security and operability are further improved.

(7): The display screen 30 is arranged in front of the front end of the induction heating region 8 by the heating coil 10, and in the display screen 30, the first icon 20 is displayed in the guide area 45. This is a configuration that is always displayed in front of the display position. For this reason, the position of the first icon 20 touched by the user is farther from the front end of the heating area 8 by the guide area 45 and away from the induction heating area (heating area) 8. Thereby, it can avoid that a user touches a high-temperature display screen, and it can anticipate improving safety.
Further, since not only the first icon but also the second icon is displayed at a position in front of the guide area 45, it can be expected to further improve safety.

(8): A help mode key 50 as a fourth icon is displayed on the display screen 30. When the help mode key is touched, the user at the stage of touching the first icon 20 Thus, since the voice guide device 31 notifies the user of information for selecting an object to be heated, the first icon 20 is displayed even if the user is unfamiliar with the use of the induction heating cooker. When displayed, it can be expected to support the user's touch operation and improve the user's sense of security and operability.

(9): An information key 70 as a fifth icon is displayed on the display screen 30. When the information key is touched, the user who touches the second icon The driving pattern of the heating coil 10 for each cooking mode in which the driving pattern of the heating coil 10 can be selected, the heating cooking condition setting method that saves power consumption, the precautions when setting the thermal power, and the safety during cooking Information on at least one of the points of caution is notified from the voice guide device 31. For this reason, even a beginner who is unfamiliar with the use of the induction heating cooker supports the user's cooking condition setting operation when the second icon 20 is displayed, and the user's sense of security and operability are improved. It can be expected to improve.

Embodiment 2. FIG.
10 to 13 show an induction heating cooker (built-in type) according to Embodiment 2 of the present invention. FIG. 10 is a plan view showing the operation process of the display screen of the induction heating cooker. FIG. 11 is a plan view 1 showing a display screen of the induction heating cooker of FIG. 10 and its peripheral portion. 12 is a plan view 2 showing a display screen of the induction heating cooker of FIG. 10 and its peripheral portion. FIG. 13 is a flowchart showing the control operation of the control device for the induction heating cooker of FIG. In addition, the same code | symbol as Embodiment 1 or an equivalent part is attached | subjected, and the overlapping description is abbreviate | omitted.

In FIG. 10, 30 is a display screen, 50 is a fourth icon, 65 to 67 are cooking mode icons (third icon), and 74 is a stop key (seventh icon) for instructing to stop the induction heating operation. ).

In FIG. 10, 61 is a thermal power adjustment icon (second icon), 62 is a thermal power adjustment icon (second icon), and 65 to 67 are cooking mode icons (third icon). .

FIG. 10 shows the display screen 30 when the stew mode icon 65 is selected, and the “stir mode / operation information” is displayed on the display portion 82 of the cooking menu. The display screen 30 is characterized in that the current “boiled mode” heating power and whether or not the current heating coil 10 is being heated are displayed by letters and numbers. Specifically, “simmered thermal power 3” is displayed in the thermal power display area 87. Stewed thermal power 3 is about 400W. When the heating is stopped, the display information 71 is displayed as “resting”. Since FIG. 10 is heating, it is in a state where “heating” is displayed with white letters. The display unit 83 showing the driving conditions of the individual heating coils 10 displays the heating power and energization time in the stew mode.

The energization time is counted down by the control device 23 and changes from 40 seconds → 39 seconds... 30 seconds → 29 seconds →. As shown in FIG. 10, the energization time and thermal power are displayed in a list state in the form of horizontally long display frames 84A to 84H.
Each of the display frames 84 </ b> A to 84 </ b> H indicates information such as the energization amount (thermal power) of the heating coil 10 and the energization time.

Then, when the induction heating operation is started, the position of each heating coil 10 that is energized in the order of the display frames 84A → 84B → 84C → 84D → 84E → 84F → 84G → 84H, Displayed as highlighted. That is, one frame portion (display frame) 84A indicating one heating coil 10 to which high-frequency power is applied is displayed prominently so that it can be easily discriminated compared to the other display frames 84B to 84H.

In FIG. 10, the energization operation of the uppermost display frame 84 </ b> A is also displayed on a graphic 85 schematically showing the heating coil 10 on the left side. That is, the display frames 84A to 84H and the schematic figure 85 of the heating coil 10 correspond to each other, and the shaded portion of the schematic figure 85 indicates that one heating coil 10 is energized. It can be seen that the coil 10 is driven for a predetermined time (40 seconds) at a heating power value (400 W) as displayed in the display frame 84A. In addition, 86 is a figure part which showed the to-be-heated material N (bottom surface) typically.

88 is an icon for selecting the induction cooking menu, and 89 is an icon for returning the screen to be touched when returning to the previous display state of the display screen 30.
According to the second embodiment, the user can easily imagine a specific energization pattern of the heating coil 10. This is because the display form sequentially changes as shown in FIG. 10 every time the heating coil 10 to be energized changes. As a result, the user can easily understand the energization pattern of the heating coil 10, and the sense of security increases.

Next, FIG. 11 will be described. The display screen 30 is disposed closer to the front side than the front end of the induction heating region 8 by the heating coil 10 (this is the same as in the first embodiment). However, in the second embodiment, an electrode 90 is provided on the back side of the display screen 30 to detect that the user has touched from a change in electrostatic capacitance, and the control device 23 provides the first icon 20. It is one of the features that when the user touches the electrode 90 in the selection scene, an alarm is issued by the voice guide device 31. Even when the object to be heated N is excessively placed on the near side, the electrode 90 can detect the excessive approach of the object to be heated N, so that the object to be heated N is at the rear edge of the display screen 30. An abnormal placement such as approaching or a bottom surface covering the display screen 30 can be detected by the control device 23 and an alarm can be issued.

As shown in FIG. 11, the three electrodes 90 are formed on the top and bottom surfaces of the top plate 3 by vapor deposition, printing, or the like. That is, the electrode 90 includes an electrode 90 </ b> B disposed on the back side of the display screen 30 that is closer to the heating region 8, an electrode 90 </ b> R disposed along the right edge of the display screen 30, and the left edge of the display screen 30. A total of three electrodes 90L are arranged. In addition, detection of contact of a user's finger with such an electrode is already known.

In FIG. 11, reference numeral 91 indicates that the object to be heated placement detection unit 11 detects that two objects to be heated N are simultaneously placed on the heating coil 10 at a distant position, and those two objects to be heated are detected. A state is shown in which two first icons 20A and 20B are displayed on the display screen 30 so that the position of the object N can be seen in an image.

In FIG. 11, reference numeral 91 denotes a position guide key, and a total of 11 pieces are displayed along a straight line along the front edge of the display screen 30. This key is the thirteenth icon.
Five position guide keys are arranged on both sides of the left and right center guide key 91C, and the guide key from the center to the left end is denoted by reference numeral 91L. The guide key at the left end from the center is indicated by the reference numeral 91R.

In the state of FIG. 11, when the user touches the left first icon 20A, the screen is switched to the display screen 30 of FIG. However, in preparation for the case where the control device 23 determines that the user is in a state where neither the left first icon 20A nor the right first icon 20B can be selected (touch operation is not possible), The guidance key 91 is displayed in synchronization with the display of the first icon 20. The heated object placement determination unit 11 detects the two heated objects N1 and N2, and the voice guide device 31 selects the heated object N1 to be used by touching the first icon 20A. When one minute or several minutes have passed since the prompt, the control device 23 performs an estimation process that the user cannot select either the left first icon 20A or the right first icon 20B.

In the state of FIG. 11, when the user wants to use the left heated object N1 of the two heated objects N1 and N2, when the user touches one of the guide keys 91, the voice guide The device 31 informs by voice that one heated object N1 is behind the left 4 guide key and the other heated object N2 is behind the right 4 guide key.

Therefore, when the user touches a guide key that seems to be the left 4 guide key 91, if the touched guide key 91 is a desired “left 4” guide key, the voice guide device 31 “There is an icon for the purpose of selecting the pan on the left side, directly behind the touched guide key,” voices. However, if you touch the “Left 2” guide key 91 by mistake, the touched guide key is the left 2 key. The left 4 key is on the left side. I will guide you. Such a guide key 91 is unnecessary for a user with sufficient visual acuity and directly reaches the first icon 20A with a single touch. However, for a visually handicapped person or the like, the object to be heated N is correctly selected. Can be expected to function beneficially.

Next, FIG. 12 will be described. When the user touches the left first icon 20A in the state of FIG. 11 regardless of whether the guide key 91 is touched, the display screen 30 changes as shown in FIG.
This FIG. 12 has shown the display screen 30 for setting a thermal power among heating cooking conditions. Reference numeral 92 denotes a display area for guidance information that prompts the user to set firepower. 60A to 60K are thermal power icons similar to the thermal power icons (second icons) 60A to 60F described in the first embodiment. With the minimum thermal power icon 60A, 150 W can be set, and with the maximum thermal power icon 60K, a thermal power of 3000 W can be set. That is, the function of the guide key 91 is switched by the control device 23, and the guide key 91 changes to a thermal power icon (second icon).

Next, FIG. 13 will be described. FIG. 13 is a flowchart showing the control operation of the control device 23 of the induction heating cooker CH as in FIG. 9 in the first embodiment.
In FIG. 13, step S21 is irrelevant to step S21 of FIG. 9, and is not continuous with the operation steps shown in the flowchart of FIG.
In FIG. 13, S21 to S32 correspond to the operation steps S1 to S12 in FIG. 9 of the first embodiment. S40 corresponds to step S20 in FIG. Further, S41 is a step corresponding to S21 of FIG. 9, and therefore, step S33 and subsequent steps will be described in FIG.

In FIG. 13, S33 is a step of determining whether or not all cooking conditions have been set. This is a confirmation display on the display screen 30 such as “Is the input of cooking conditions complete?” It is determined whether or not the user has touched the start key (sixth icon 73) displayed on the display screen 30 by looking at this. If the start key 73 is touched, step S33 is “YES”, and the process proceeds to the next step S34.
On the other hand, if the user does not touch the start key (sixth icon 73), the determination in step 33 is repeatedly performed (however, for example, after 30 minutes, it is automatically reset and returns to step S24).

In FIG. 13, when the setting of the thermal power value is completed with the second icons 60 </ b> A to 60 </ b> K and the user gives a heating operation start command, S <b> 34 is a specific heating at the placement position of the article to be heated N Only the coil 10 is supplied with high-frequency power from the inverter circuit 25, and the heating operation is started.

When the heating stop operation is performed or a set time called timer cooking is exceeded (S35), the inverter circuit 25 is stopped (S36). During the period of induction heating by the inverter circuit 25, the material detection (judgment) means 36 of the object to be heated N also detects the output side current of the heating coil and also detects the input current on the power supply circuit 22 side. The detection result is continuously transmitted to the control device 23 so that the intended heating ability (thermal power) is always exhibited. Therefore, the control device 23 can perform heating driving by controlling the output of the inverter circuit 25 within the target range.

After the inverter circuit 25 is stopped, in step S38, when the user turns off the main power switch 15 or when a certain time (for example, 30 minutes) has passed, the temperature of the top plate 3 drops to a safe temperature. When this is detected by the temperature detection circuit 24, the main power switch 15 is automatically turned off and the process ends (S39).

The second embodiment is characterized by steps S42 and S43.
That is, in step S34, the setting of the thermal power value is completed with the second icons 60A to 60K, etc., and it is determined whether or not the user gives a heating operation start command. "Process" can be selected.

In step S34, for example, “The above is the input of cooking conditions complete? Press the start key to start cooking. Press the hold key to temporarily hold. Also hold the cooking conditions for another pan. If the user touches a hold key (not shown) (fourteenth icon) displayed on the display screen 30 while viewing the confirmation display such as “can be set”, step S34 is “No”. ”And proceeds to step S42 of the hold process.

When the hold process is selected in step S34, the cooking conditions such as the heating power set by the user are temporarily stored in the storage device 23R of the control device 23 in a pair with the selected cooking mode. And when a user gives the instruction | indication of cancellation | release hold to the control apparatus 23 from the input operation part 5, the cooking conditions, such as the thermal power, are read from the memory | storage device 23R collectively with the information of the selected cooking mode, Used for cooking operation of the control device 23. However, before starting the heating operation, the heated object placement determination unit 11 determines the placement position of the heated object N1 (step S24), and the result of comparison with the position before the holding process indicates that the heated object N1 is moved. If detected, heating cooking cannot be started as it is, and each step is executed again by returning to step S25.

When the hold process is selected in Step S34, it is determined whether or not a new object to be heated N2 has been detected in the stage from Step S42 to Step S43. For example, when the placement of two or more objects to be heated N1 and N2 is detected at positions separated as shown in FIG. 11 in the step S24, the object to be heated is placed again in the step 43. The placement determination unit 11 determines the placement positions of the objects to be heated N1 and N2.

In this step 43, the heated object N1 (on the right side) selected with the first icon 20A in the stage of step S31 is excluded from the determination result. As a result, when there is still another object to be heated N2 (also on the right side) at the stage of step S43, the process after step 25 is performed on the object to be heated N2.

Thereby, when a user chooses to give priority to cooking condition setting about one to-be-heated object N1 (when not holding processing is chosen), the setting operation of cooking conditions has been advanced until then. It can progress to the process of a cooking start about 1 to-be-heated material N1. Even if the holding process is selected in step S42, if another heated object N2 is not detected in the next step S43, the process proceeds to step S44, and after a certain time (for example, 30 minutes) has passed, the next step S38 is performed. , The main power switch 15 is automatically turned off when the user turns off the main power switch 15 or after a certain time (for example, 30 minutes) has passed (S39). However, the main power switch 15 is not automatically turned off unless the temperature detection circuit 24 detects that the temperature of the top plate 3 has decreased to a safe temperature (operates the electric fan for internal cooling of the main body 1). To continue).

As is clear from the above description, in the second embodiment, the same effect as that in the first embodiment can be expected. Furthermore, according to the second embodiment, even when a plurality of objects to be heated N are placed on the top plate 3 at the same time, priority is given to the cooking conditions of one object to be heated N, and the setting of the cooking conditions is completed. It can be expected that the next cooking condition setting operation for the object to be heated N can be smoothly performed without causing confusion to the user.

Embodiment 3 FIG.
14 to 15 show an induction heating cooker (built-in type) according to Embodiment 3 of the present invention. FIG. 14 is a plan view showing the operation process of the display screen of the induction heating cooker. FIG. 15 is a flowchart showing the control operation of the control device for the induction heating cooker shown in FIG. In addition, the same code | symbol as Embodiment 1 or an equivalent part is attached | subjected, and the overlapping description is abbreviate | omitted.

In FIG. 14, 5 is an input operation unit provided in the main body 1, and 10 is a heating coil. In FIG. 14, the first heated object N1 having a circular bottom shape is first placed at a position close to the left end of the top plate 3, and then the second elliptical shape is positioned immediately on the right side thereof. The case where the to-be-heated material N2 is placed is shown. In addition, inside the main body 1, a thin rod-like or thin plate-like light guide 100 that guides visible light so as to surround all the heating coils 10, a light-emitting diode that introduces light into the light guide, and the like The light source 101 is built in. And it becomes the structure which can visually recognize the position of each heating coil 10 from the top plate 3 by radiating | emitting light from the light guide 100 in the circumference | surroundings to the top plate 3 side one by one. Yes. Informing the user of the heating area of each heating coil 10 by using such a light guide 100 and the light source 101 is known, for example, from Japanese Patent Publication No. 2014-116088.

In FIG. 14, the outer diameter of each heating coil 10 is 10 cm, the bottom diameter of the first heated object N1 is 24 cm, the long diameter of the bottom surface of the second heated object N1 is about 40 cm, and the short diameter is about 25 cm. The following description will be made assuming that the gap between the heating coils 10 is about several mm.

As shown in FIG. 14, when the first object to be heated N1 is placed on the top plate 3, there are four heating coils 10 below the first object to be heated N1. Become. On the other hand, when the second heated object N1 is placed on the top plate 3, there are six heating coils 10 below the second heated object N1. However, when the first and second objects to be heated N1 and N2 are placed adjacent to each other as described above, the magnetic flux during induction heating of one object to be heated N1 is applied to another object to be heated N2. There are adverse effects, such as a concern that the control device 23 may not be able to perform accurate thermal power control via the inverter circuit 25, and so on.

In addition, such a multi-coil method has an advantage that the object to be heated N may be placed at any position on the top plate 3, but the objects to be heated N1 and N2 having a certain size or more are adjacent as described above. It is necessary to remove the harmful effects of being placed in the state.

Therefore, the third embodiment is characterized in that the two objects to be heated N1 and N2 are notified to the user so as to maintain an interval of about the outer diameter (10 cm) of at least one heating coil 10.

Specifically, as shown in FIG. 14, after the first heated object N1 is placed on the top plate 3, a large first object N1 is placed next to the right of the first heated object N1. When two heated objects N2 are placed, the heated object placement determination unit 11 determines the positional relationship between the first and second heated objects N1 and N2, and the two heated objects N1 and N2 The interval W is notified by voice so as to be separated by approximately one heating coil 10, and is also notified by the light of the light guide 100 described above. Then, the position of the second object to be heated N2 indicated by the thin chain line in FIG. 14 is moved to the right by one heating coil 10 (only the dimension close to the gap dimension W in FIG. 14) and indicated by the thick chain line. It is set as the position of the second heated object N2.

Next, FIG. 15 will be described. In FIG. 15, S <b> 51 to S <b> 58 are operation steps based on the control program of the microcomputer that constitutes the core of the control device 23, and are portions related to the position detection and position correction recommendation of the heated object N.

Hereinafter, description will be made in order from the start S51. When the operation button 15A of the main power switch 15 is pressed, the main power switch 15 is closed (S52).
When the control device 23 detects that the main power switch 15 is closed in step S52, the power circuit of the liquid crystal display screen constituting the display screen is driven by the drive circuit 37, and the display screen 30 is activated. The heated object placement determination unit 11 and the material detection (determination) means 36 for the heated object N are also activated. Furthermore, the voice guide device 31 is also activated to guide the user to place the article N to be heated used for cooking on the top plate 3 (S53).

During the period when the user places the first heated object N1 on the top plate 3 and cooks, the second heated object N2 is positioned near the first heated object N1. The heated object placement determination unit 11 checks on which heating coil 10 the second heated object N is placed. As described above, since the sensor 12A is disposed at the center of each heating coil 10, the detection signal from the sensor 12A disposed in the heating coil 10 located immediately below the second object to be heated N2. Then, the to-be-heated object mounting determination part 11 detects presence of the 2nd to-be-heated object N2 (S53). It should be noted that a metal object smaller than the prescribed size, such as a spoon, is not discriminated from the heated object N at this stage.

Next, when the presence of the second heated object N2 is detected, the process proceeds to step S54, and the number of heated objects N is confirmed again. If the total number of objects N to be heated is less than 3, the process proceeds to step 55. If the number is three or four, the process proceeds to error display processing S60, and the voice guide device 31 notifies that three or more cannot be used at the same time.

Next, in step S55, the number of heating coils 10 corresponding to the second object to be heated N2 is determined. And when it determines with four or more (in this case, it determines with six), it determines with it being the to-be-heated object N2 of the magnitude | size equal to or more than the 1st to-be-heated object N1.

Next, in step S56, the second heated object N2 is placed on the adjacent heating coil 10 based on the determination information of the placement positions of the first heated object N1 and the second heated object N2. A determination is made as to whether it is not.
Here, when it turns out that the 1st to-be-heated object N1 and the 2nd to-be-heated object N2 are placed on two adjacent heating coils, it estimates that the space | interval of both is less than predetermined value ( S57).
When it is determined that the distance between the two objects to be heated N1 and N2 is narrow, in step S58, the heating coil 10 below the first object to be heated N1 and the second object to be heated N2 is not adjacent. The user is advised to move the second object to be heated N2 to the minimum by one heating coil 10 (about 10 cm) (in a direction away from the first object to be heated N1) (S58). .

Here, in order to reliably guide the user to move the heating coil by one, the heating region is shifted in the adjacent direction by the diameter of one heating coil 10 by the light of the light guide described above. Shine. Then, the position of the second object to be heated N2 indicated by the thin chain line in FIG. 14 is moved to the right by one heating coil 10 to obtain the position of the second object to be heated N2 indicated by the thick chain line. . In addition, in order to call a user's attention, the light of the above-mentioned light guide 100 is made to blink, or it is made to emit light different from the time of normal heating cooking. Then, when the user repositions the second object to be heated N2, step S53 and subsequent steps are performed again at the new position.
Thus, when it is determined in step 67 that the interval is not less than the predetermined interval, the process proceeds to the normal processing mode. Note that the normal processing mode refers to processing as described in FIG. 9 of the first embodiment. Specifically, the process proceeds from steps S56 and S57 in FIG. 15 to step S5 shown in FIG. 9 (however, only the material determination is performed).

As is clear from the above description, the induction heating cooker according to the third embodiment is
A main body 1 having a top plate 3 on which two objects to be heated N1 and N2 are placed;
A plurality of heating coils 10 housed in the body 1;
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
It is determined whether or not two objects to be heated N1 and N2 are placed immediately above the heating coil 10, and the object to be heated is placed that identifies the heating coil 10 located below the objects to be heated N1 and N2. A determination unit 11;
An input operation unit 5 provided on the upper surface of the main body unit 1;
A main power switch 15 provided in the main body 1;
A voice guide device 31 for notifying a user of the input operation unit 5 by voice information related to the operation;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25 and the voice guide device 31,
The input operation unit 5 has a display screen 30 on which a plurality of types of icons for touch input are displayed.
The control device 23 displays the first icon 20 in the display area of the display screen 30 based on the result of the placement of the heated objects N1 and N2 determined by the heated object mounting determination unit.
The voice guide device 31 informs a user of reference information for touching the first icon 20,
Further, when the installation positions of the first and second objects to be heated N1 and N2 are approaching, the control device 23 uses the voice guide device 31 to make a sound so as to obtain an appropriate installation position. It is the structure to guide.

For this reason, according to this induction heating cooking appliance CH, the effect similar to the effect in Embodiment 1 can be anticipated. Further, according to the third embodiment, when a plurality of objects to be heated N are abnormally approached and placed on the top plate 3, the position of the one object to be heated N is reviewed and replaced. Since the sound guide device 31 notifies (by correcting the position) and the heating area is illuminated by the light of the light guide 100 so as to be in an appropriate position, induction heating is performed without impairing the advantages of the multi-coil system. can do.

Embodiment 4 FIG.
16 to 18 show an induction heating cooker (built-in type) according to Embodiment 4 of the present invention. FIG. 16 is a plan view of the induction heating cooker. FIG. 17 is a flowchart showing the control operation of the control device for the induction heating cooker of FIG. FIG. 18 is a plan view showing the operation process of the display screen of the induction heating cooker of FIG. In addition, the same code | symbol as Embodiment 1 or an equivalent part is attached | subjected, and the overlapping description is abbreviate | omitted.

The induction heating cooker CH shown in FIG. 16 receives a power consumption reduction command signal from an external organization such as an electric power company via a power command device (not shown) installed in each home, wirelessly or by wire, and the reduction Corresponding to the command signal, it has a function of reducing the power consumption of the entire device during the cooking operation. For example, if a reduction command signal is received so that the upper limit power consumption is 2000 W and the upper limit value is 1500 W during heating cooking, the power of the heating source is controlled and forced (automatically even if the user does not operate) ) Is a reduction operation. In addition, the expectation of such an induction heating cooker that can reduce the total power consumption is increasing. For example, Japanese Patent Publication No. 2014-120430 and Japanese Patent Publication No. 2011-55622 disclose such a reduction in power consumption. Possible induction cookers have been proposed.

By the way, what was shown by the said prior art literature (this patent publication 2014-120430 gazette and Japanese patent publication 2011-55622 gazette) of the type by which one or more heating openings were arrange | positioned on the top plate. It is based on an induction heating cooker.

This will be specifically described below. In FIG. 16, the induction heating cooker CH includes a top plate 3 on which an object to be heated N (N 1, N 2...) Is placed on the upper surface of the main body 2, and a horizontally long input operation unit ( Upper surface operation section) 5.

The horizontally-long rectangular heating area 8 set on the top plate 3 includes a first heating area 8P that is not changed to a non-heating area even when a power consumption reduction command signal is received, and a power consumption reduction command signal. It is comprised from two parts with the 2nd heating area 8N changed into the non-heating area when it receives.

The input operation unit 5 is provided with a horizontally long display screen 30 and an operation button 15 </ b> A of the main power switch 15. Reference numeral 102 denotes an operation button of an energy saving mode setting switch (not shown).

The energy saving mode setting switch (not shown) restricts the maximum rated power (6000 W) of the induction heating cooker CH to a constant value lower than that, for example, 5000 W when the user presses the operation button 102. It is. With this energy saving mode setting switch, the control device 23 allows the total power consumption of the induction heating cooker CH as described above regardless of the size and number of the objects to be heated N or the number of heating coils 10 energized during cooking. The inverter circuit 25 is mainly controlled so that the power becomes 5000 W or less.

Further, when the user presses the operation button 102 of the energy saving mode setting switch, the heating area 8 is limited to only the first heating area 8P, and the object N to be heated is placed in the second heating area 8N. Even induction heating is not possible.

In FIG. 16, reference numeral 103 denotes a light guide body 100 and a light source 101 as shown in Embodiment 3, and the top plate 3 is illuminated with light from below, and a rectangular frame shape is illuminated with light on the surface of the top plate 3. This is a placement position guide mark that is raised. This guidance mark 103 surrounds the first heating area 8P and the second heating area 8N when the main power switch 15 is turned on in the normal operation mode without pressing the operation button 102 of the energy saving mode setting switch. Although it appears like a frame, when the energy saving mode is set, and when the induction heating cooker CH receives the power consumption reduction command signal and restricts the heating area 8, only the first heating area is emphasized. To guide with light.

Next, FIG. 17 will be described. In FIG. 17, S71 to S79 are the respective operation steps based on the control program of the microcomputer constituting the core of the control device 23, restricting the heating area 8 of the object N to be heated, and informing the restriction result. It is a part related to operation.

Hereinafter, description will be made in order from the start S71. While the operation button 15A of the main power switch 15 is pressed and the induction heating cooking operation is being executed, the control device 23 receives the power consumption reduction command signal (S72), and starts the total power reduction corresponding process. It is determined whether or not induction heating cooking is performed in the heating area 8N (S73). In addition, the control apparatus 23 grasps | ascertains the presence of the heated object N and the corresponding heating coil 10 based on the detection information of the heated object placement determination unit 11, and supplies a high-frequency current only to the necessary heating coil 10. Therefore, it can be easily determined whether induction heating cooking is performed in the second heating area 8N.

When induction heating cooking is not performed in the second heating area 8N (the heated object N is placed in the second heating area 8N, but the heating operation has already been completed or the heating operation command is issued. (Including the case where it is not given), the process proceeds to step S74.

In step S74, the control device 23 restricts the heating area 8 (8N, 8P) to only the first heating area 8P, as in the state where the energy saving mode setting switch is turned on. Then, the display screen 30 displays that the energy saving mode is set. Furthermore, since the energy saving mode is set by the voice guide device 31, the second heating area 8N is notified by voice that induction heating cannot be performed even if the article to be heated N is placed (S75).

In step S75, the control device 23 narrows the range of the placement position guide mark 103 that is displayed in a frame shape surrounding the first heating area 8P and the second heating area 8N. Only the related light source 101 is turned on so as to surround only the heating area 8P.

On the other hand, as a result of the determination in step S73, when it is determined that induction heating cooking is performed in the second heating area 8N, the process proceeds to step 76, and the external power (power command) is set as a response signal to perform the total power reduction setting process. To the device. And in order to restrict | limit the maximum rated electric power (6000W) of the induction heating cooking appliance CH to a fixed value lower than it, for example, 5000W, the internal electric power upper limit value used as the reference | standard of a restriction | limiting operation is changed into 5000W.

In the next step S77, the control device 23 checks whether or not the induction heating operation is finished, and if finished, the process proceeds to step S78. In step S78, similarly to step S74, the heating area 8 (8N, 8P) is limited to the first heating area 8P.

Even after step S78, in step 75, the display screen 30 displays that the energy saving mode is automatically set in response to an external power reduction request. Further, since the energy saving mode is set by the voice guidance device 31, the second heating area 8N is notified by voice that induction heating cannot be performed even if the article to be heated N is placed, and the process ends (S79).

Next, FIG. 18 will be described. As described above, when the control device 23 receives the power consumption reduction command signal and when the user presses the operation button 102 of the energy saving mode setting switch (not shown), the energy saving mode is set. Although set, FIG. 18 shows changes in the display screen 30 before and after the energy saving mode is set.

In FIG. 18, 30N is a restriction target display area that displays the presence of the object N to be heated placed in the second heating area 8N.
30P is a priority display area for displaying the presence of the object N to be heated placed in the first heating area 8P.

Since the heating area 8 is not restricted before the energy saving mode is set, as is apparent from FIG. 18A, the display area includes both the restriction target display area 30N and the priority display area 30P. However, since the heating area 8 is restricted after the energy saving mode is set, only the priority display area 30P is displayed on the display screen 30, as is apparent from FIG. 18B, corresponding to this restriction. Therefore, since the display area of the priority display area 30P can be secured widely (compared to before setting the energy saving mode), it is possible to increase the information that can be displayed at one time.

If the operation button 102 of the energy saving mode setting switch is pressed after the main power switch 15 is turned on and before starting the induction heating cooking, the control device can be used even if the object N to be heated is first placed in the second heating area 8N. 23 does not detect the placement of the article N to be heated, so induction heating cooking cannot be started. That is, the user can use the rear area on the top plate 3 as a temporary place for cooking utensils or the like that are not used immediately. After the energy saving mode is set, when the operation button 102 of the energy saving mode setting switch is pressed again, the energy saving mode can be released even during induction heating cooking, but as described above, the metal placed in the second heating area 8N. The display screen 30 and the voice guide device 31 are notified in advance so that a manufactured cooking utensil or the like is not erroneously determined to be the heated object N, and then the user performs a confirmation operation (a specific icon on the liquid crystal screen 30). Safety measures are taken so that they can be released for the first time.

The induction heating cooker CH shown in the fourth embodiment is
A main body portion 1 having a top plate 3 on which an object to be heated N is placed;
A plurality of heating coils 10 housed inside the body portion;
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A to-be-heated object placement determination unit 11 that determines whether or not a to-be-heated object is placed immediately above the heating coil 10;
An input operation unit (upper surface operation unit) 5 provided on the upper surface of the main body unit 1;
A main power switch 15 provided in the main body 1;
A voice guide device 31 for notifying a user of the input operation unit 5 by voice information related to the operation;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25 and the voice guide device 31,
The input operation unit 5 has a display screen 30 on which a plurality of types of icons for touch input are displayed.
The control device 23 displays the first icon 20 in the first display area 40 of the display screen 30 based on the result of the placement of the heated object N determined by the heated object mounting determining unit 11. Let
The voice guide device 31 informs a user of reference information for touching the first icon 20,
The control device 23 divides the heating area for heating the article to be heated N into a first heating area and a second heating area, so that the heating coil is divided into the first heating area and the second heating area. Control energization by dividing into groups corresponding to
When the control device 23 is set in the energy saving mode in response to a user operation or an external command, the controller 23 supplies heating cooking power to the heating coil belonging to the first heating area, and supplies the heating heating power to the second heating area. The heating coil corresponding to the heating coil is not supplied with power for cooking.

Therefore, according to the induction heating cooker of the fourth embodiment, similarly to the first embodiment, the user can easily select the first icon 20 on the display screen 30, and the operability can be improved. In addition, it can be used conveniently.
For example, the first heating area can be limited to a certain range in the central portion of the top plate 3 and can be used as a narrow heating area 8 (8P) as a result. Alternatively, the rear end side of the top plate 3 farthest from the display screen 30 with the input operation unit 5 cannot be used (set to the second heating area 8N), and the entire heating region that can be used in the energy saving mode is used as the light source. 101 may be illuminated. Such a structure can be used for cooking while reducing the power consumption and without impairing the user-friendliness.

In addition, by fixing the heating coil 10 that is not used for induction heating in order to reduce power consumption and visually displaying to the user that the heating area and the non-heating area are clearly separated, a specific heating area is If it becomes clear that it is not used, other cooking utensils can be placed in the non-heated area, cooking preparation materials can be placed, and the top plate 3 can be used effectively.

In the display screen 30 described above, it has been described that the user directly touches the surface thereof. However, the display screen 30 is scratched by sticking a transparent film or the like that does not hinder touch-type input on the surface of the display screen 30. Even if it is configured to prevent such a problem, it corresponds to the “format that is input by touching the display screen” in the present invention. In other words, both when directly touching the surface of the display screen without passing through the top plate 3 and when touching the surface of the display screen 30 indirectly through a thin transparent film or the like as “display screen input”. Applicable.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The substantial scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

The power control system according to the present invention can be widely used not only in homes but also in shops or small factories where commercial appliances are installed.

CH induction heating cooker ES abnormality detection means FG fingertip IP input operation unit N heated object 1 main body unit 1A main body case 2 top surface unit 3 top plate 4 window 5 upper surface operation unit 6 grill unit 6A grill door 8 heating area (heating area) )
8N 2nd heating area 8P 1st heating area 10 Heating coil 10A Cavity 11 To-be-heated object mounting determination part 12 Sensor 12A Sensor 12B Sensor 13 Upper decoration board 14 Lower decoration board 15 Main power switch 15A Operation button 16 1st Intake port 17 Exhaust port 18 Exhaust port 20 1st icon 20A 1st icon 20B 1st icon 21 Power line 22 Power supply circuit 23 Controller 23R Storage device 24 Temperature detection circuit 25 Inverter circuit 26 Liquid crystal display board 27 Radiation type electricity Heater 28 Catalyst heater 29 Catalyst heater drive circuit 30 Display screen 30N Restriction target display area 30P Priority display area 31 Speech synthesizer 32 Speaker 33 Steam supply device 34 Clock circuit 35 Vibration sensing device 36 Material detection (determination) of heated object N Means 37 Drive circuit 39 of liquid crystal display substrate Chi detection range 40 image view 48 order information 50 Help mode key in the display area 41 display area 42 display area 45 advice information display unit 45A character information 46 heating coil (fourth icon)
51 reaction area (detection part)
52 reaction area (detection part)
53 Guidance marks 60A-60K Thermal power icon (second icon)
61 Adjustment icon (second icon)
62 Adjustment icon (second icon)
65-67 Cooking mode icon (third icon)
70 Information Key (5th icon)
71 Display information 72 Reference image 74 Stop key (seventh icon)
75 Next screen command key (8th icon)
80 Partition Frame 82 Cooking Menu Display Unit 83 Display Units 84A to 84H Display Frame 85 Graphic 88 Icon (11th Icon)
89 icon (12th icon)
90 Electrode 91 A position guide key (13th icon).
100 Light Guide 101 Light Source 102 Energy Saving Mode Setting Switch Operation Button 103 Placement Position Guidance Mark

Claims (31)

A main body having a top plate on which an object to be heated is placed;
A plurality of heating coils housed in the body;
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit for determining whether or not an object to be heated is placed immediately above the heating coil;
An input operation unit provided on the upper surface of the main body;
A main power switch provided on the main body;
A voice guide device for notifying a user of the input operation section by voice information related to the operation;
A control device that controls the input operation unit, the inverter circuit, and the voice guide device;
The input operation unit has a display screen on which a plurality of types of icons for touch input are displayed,
The control device displays a first icon in a display area of the display screen based on a result of the placement of the heated object determined by the heated object placement determining unit,
The voice guidance device informs the user of information that is helpful for touching the first icon.
When the control device detects that the user touches the first icon, the control device displays a second icon for selecting a cooking condition on the display screen, and then the user displays the second icon. An induction heating cooker characterized in that by detecting a touch, an object to be heated corresponding to the first icon is selected as a heating target, and a heating condition can be input. The control device includes a microcomputer that performs a control operation,
When the main power switch is turned on by the user, the microcomputer control program is activated, the heated object placement determining unit is activated, and the placement status of the heated object is displayed on the display screen in the first screen. Display with an icon,
2. The induction heating cooker according to claim 1, wherein after the icon is displayed, reference information for touching the first icon is notified by the voice guide device. When the control device detects that the user has touched the first icon, the control device can turn off the display of the first icon on the display screen, and select a thermal power level during cooking by touch operation. The induction heating cooker according to claim 1, wherein each of the heating power keys is displayed as a second icon. When the control device detects that the user has touched the first icon, the control device turns off the display of the first icon on the display screen, and the heating time for cooking can be selected by a touch operation. The induction heating cooker according to claim 1, wherein the time setting keys are displayed as second icons. After the placement status of the object to be heated is displayed with the first icon on the display screen, the voice guide device notifies information for guiding from a specific position on the display screen to the display position of the first icon. The induction heating cooker according to claim 1. The said control apparatus displays the icon (3rd icon) of the cooking mode which can select the drive pattern of a heating coil in the step which displayed the 2nd icon on the said display screen. The induction heating cooker according to any one of 5. The said control apparatus displays the image figure which showed the number and arrangement | positioning of the heating coil to drive in the step which displayed the 2nd icon on the said display screen, The any one of Claims 2-5 characterized by the above-mentioned. Induction heating cooker described in 1. In the control device, at the stage of displaying the first icon on the display screen, at least one of the information recommending touching the first icon or the information indicating the operational precautions is expressed in characters. The induction heating cooker according to any one of claims 2 to 5, wherein a guide area is displayed. The operation mode of the voice guidance device is further selected by the user's selection operation, and means for selecting any mode from the normal mode and the beginner mode,
6. The voice guidance device according to claim 2, wherein, in the beginner mode, the user informs reference information for performing a touch operation on the first icon. 7. Induction heating cooker. The display screen is disposed on the near side of the front end of the induction heating region by the heating coil,
10. The induction cooking device according to claim 9, wherein the first icon is always displayed on the near side of the display position of the guide area on the display screen. The display screen is disposed on the near side of the front end of the induction heating region by the heating coil,
The induction heating cooker according to claim 9, wherein, on the display screen, the first icon and the second icon are always displayed on the near side of the display position of the guide area. The display screen is covered by the top plate,
The induction heating cooker according to claim 9, wherein electrodes for detecting coordinates of touch positions of the first icon and the second icon are arranged on a surface of the top plate. On the display screen, a help mode key that is a fourth icon is displayed. When the help mode key is touched, the user who is in the stage of touching the first icon is to be heated. The induction heating cooker according to any one of claims 2 to 5, wherein information for supporting an operation of selecting an object is notified from the voice guide device. An information key which is a fifth icon is displayed on the display screen, and when the information key is touched, the driving pattern of the heating coil is displayed to the user who touches the second icon. At least one of a heating coil drive pattern for each cooking mode, a cooking condition setting method that saves power consumption, a precaution when setting thermal power, and a safety precaution during cooking The induction heating cooker according to any one of claims 2 to 5, characterized in that information on the two is notified from the voice guide device. The control device displays an image diagram showing the number and arrangement of the heating coils to be driven at the stage of displaying the second icon on the display screen,
The said control apparatus displays the heating power and energization time of the heating coil in the stew mode which is one of the cooking modes in the step which displayed the 2nd icon on the said display screen. Induction heating cooker. The display screen is disposed on the near side of the front end of the induction heating region by the heating coil,
On the back side of the display screen, an electrode for detecting that the user has touched from a change in capacitance is provided,
The induction heating cooking according to claim 9, wherein the control device issues an alarm by the voice guide device when detecting that the user touches the electrode in the selection scene of the first icon. vessel. The display screen is disposed on the near side of the front end of the induction heating region by the heating coil,
In the selection screen of the first icon, a plurality of position notification icons are displayed side by side in the left-right direction on the display screen,
10. The voice guide device notifies the touch position when the user touches one of the position notification icons when the user does not touch the first icon. The induction heating cooker described in 1. The display screen is disposed on the near side of the front end of the induction heating region by the heating coil,
In the selection screen of the first icon, a plurality of position notification icons are displayed side by side in the left-right direction on the display screen,
When the user touches one of the position notification icons at a stage where the user does not touch the first icon, the voice guide device notifies the touch position,
The control device causes the notification icon to switch and display a function as a second icon on the display screen when detecting that the user touches the first icon. 9. The induction heating cooker according to 9. A main body having a top plate on which an object to be heated is placed;
A plurality of heating coils housed in the body;
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit for determining whether or not an object to be heated is placed immediately above the heating coil;
An input operation unit provided on the upper surface of the main body;
A main power switch provided on the main body;
A voice guide device for notifying a user of the input operation section by voice information related to the operation;
A control device that controls the input operation unit, the inverter circuit, and the voice guide device;
The heating coils are regularly arranged so as to be adjacent to each other, and have the same outer diameter,
The input operation unit has a display screen on which a plurality of types of icons for touch input are displayed,
In the control device, the heated object placement determination unit has the first heated object and the second heated object placed on at least two adjacent heating coils at different positions. Based on the result determined to be the situation, the first icon is simultaneously displayed in two places in the display area of the display screen,
The voice guidance device informs the user of information that is helpful for touching the first icon.
When the control device detects that the user touches the first icon for the first object to be heated among the first icons at the two locations, the control apparatus performs the first heating on the display screen. By displaying a second icon for selecting a cooking condition by an object and then detecting that the user touches the second icon, the first object to be heated corresponding to the first icon is displayed. It is selected as a heating target and can input heating conditions.
Furthermore, the control device selects a second cooking condition by the second heated object during a period in which the second icon for selecting the cooking condition by the first heated object is displayed. An induction heating cooker characterized by not displaying an icon. At the stage where it is detected that the user has touched the first icon for the first object to be heated among the two first icons, the condition of the cooking by the first object to be heated is displayed on the display screen. After the second icon to be selected is displayed and the setting of the cooking condition is completed, and the start of induction heating cooking for the first object to be heated is instructed from the operation unit,
The control device displays a second icon for selecting a cooking condition for the second heated object in a state where the first icon for the first heated object is not displayed on the display screen. The induction heating cooker according to claim 19, characterized in that The control device includes a microcomputer that performs a control operation,
When the main power switch is turned on by the user, the microcomputer control program is activated, the heated object placement determining unit is activated, and the placement status of the heated object is displayed on the display screen in the first screen. Display with an icon,
The induction heating cooker according to claim 19, wherein after the icon is displayed, reference information for touching the first icon is notified by the voice guidance device. After the placement status of the object to be heated is displayed with the first icon on the display screen, the voice guide device notifies information for guiding from a specific position on the display screen to the display position of the first icon. The induction heating cooker according to claim 19. The control device displays a cooking mode icon that allows a heating coil drive pattern to be selected when the second icon is displayed on the display screen. The induction heating cooker described in 1. The said control apparatus displays the image figure which showed the number and arrangement | positioning of the heating coil driven at the step which displayed the 2nd icon on the said display screen, The any one of Claims 19-22 characterized by the above-mentioned. Induction heating cooker described in 1. The control device expresses at least one of information recommending that the first icon is touched or information indicating operational precautions in characters when the first icon is displayed on the display screen. The induction heating cooker according to any one of claims 19 to 22, wherein the guide area is displayed. The operation mode of the voice guidance device is further selected by the user's selection operation, and means for selecting any mode from the normal mode and the beginner mode,
23. The voice guidance device according to any one of claims 19 to 22, wherein, in the beginner mode, the user informs reference information for a user to perform a touch operation on the first icon. Induction heating cooker. The display screen is disposed on the near side of the front end of the induction heating region by the heating coil,
The induction heating cooker according to any one of claims 19 to 22, wherein the first icon is always displayed in front of the display position of the guide area on the display screen. The display screen is disposed on the near side of the front end of the induction heating region by the heating coil,
The said display screen WHEREIN: The said 1st icon and 2nd icon are always displayed on the near side rather than the display position of the said guide area, The any one of Claims 19-22 characterized by the above-mentioned. Induction heating cooker. The display screen is covered by the top plate,
The induction heating according to any one of claims 19 to 22, wherein a coordinate detection electrode of a touch position of the first icon and the second icon is arranged on a surface of the top plate. Cooking device. On the display screen, a help mode key that is a fourth icon is displayed. When the help mode key is touched, the user who is in the stage of touching the first icon is to be heated. The induction heating cooker according to any one of claims 19 to 22, wherein information for supporting an operation of selecting an object is notified from the voice guide device. An information key which is a fifth icon is displayed on the display screen, and when the information key is touched, the driving pattern of the heating coil is displayed to the user who touches the second icon. At least one of a heating coil drive pattern for each cooking mode, a cooking condition setting method that saves power consumption, a precaution when setting thermal power, and a safety precaution during cooking 23. The induction heating cooker according to any one of claims 19 to 22, characterized in that information relating to one is reported from the voice guide device.

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