JPWO2016067861A1 - Induction heating cooker - Google Patents

Abstract

In the heating coil group, in which one heating object is heated by a plurality of heating coils positioned below the heating object, the position of the heating object placed on the top plate is detected by the control device. The control device is configured to display the detected position of the object to be heated with an icon on the display screen, detect whether the user has selected this icon, and start induction heating when the icon is selected. Since the display screen is below the top plate and includes a detection electrode that detects that the object to be heated has approached the display screen, the control device causes the object to be heated to be displayed on the display screen by the detection electrode. An induction heating cooker configured to prevent overheating of a display screen due to the approach of an object to be heated by detecting that it has approached abnormally and performing a predetermined correction operation.

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. In addition, the advantage of the multi-coil system in which induction heating coils are arranged so as to be close to or adjacent to the lower side of the top plate is compared to a cooker in which the heating unit is set at a fixed position like the conventional circular coil system The position where the object to be heated is placed is not limited, and the object to be heated can be placed at any position on the top plate relatively freely, but this causes a new problem. That is, even if the first object to be heated is initially placed at an appropriate position in the heating area and cooking is started, the position of the first object to be heated is determined by the user's action (for example, the object to be heated). The action of mixing the food to be cooked in the pan, which is a heated object), or to use another second heated object at the same time, When the heated object is moved a little, the position after the movement becomes a position that is too close to the liquid crystal display screen that is vulnerable to heat, and the display screen may be overheated.
However, conventionally, there has been no practical proposal that can effectively prevent such an abnormal approach of an object to be heated and does not impair the operability of the user.

  The present invention relates to a multi-coil induction heating cooker in which a user can easily select an icon displayed on a display screen to select an object to be heated and select a desired object to be heated. It is to prevent the display screen from being overheated due to the high heat of the object.

The induction heating cooker according to the first invention is
A main body having a top plate on the top surface having a flat area on which the first heated object and the second heated object can be placed simultaneously;
Inside the main body, a plurality of heating coils regularly arranged to be adjacent to each other;
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit that determines whether or not the first or second to-be-heated object 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 controller for controlling the input operation unit, the inverter circuit, and the voice guide device,
The input operation unit is configured to unify and set cooking conditions for all heated objects placed on the top plate,
The input operation unit has a display screen on which a plurality of types of icons for touch input are displayed,
The control device determines whether the heated object placement determining unit determines that the heated object is placed on the heating coil based on a result of the determination in the display area of the display screen. Display the number of first icons corresponding to the number of heated objects,
The control device determines that a first icon corresponding to the first object to be heated is selected by an operation in which a user touches a predetermined position on the top plate, and then the first object is selected. Operates so that the cooking conditions for heated food can be entered,
The display screen of the input operation unit is disposed below the top plate,
A detection electrode for detecting that the first or second object to be heated has approached the display screen;
The control device performs a predetermined correction operation when the detection electrode detects that the first or second object to be heated has approached abnormally.

  According to the induction heating cooker of the first aspect of the invention, it is possible to specify a heated object to be heated by touching the display screen of the operation unit, and it is detected that the heated object has approached the display screen. When approaching, the control device can execute an appropriate corrective action such as starting the induction heating cooking, stopping or forcibly reducing the heating amount. Therefore, it is possible to prevent the display screen from being deteriorated due to overheating, malfunction, burnout, and the like, and to improve the safety of the user.

The induction heating cooker according to the second invention is
A main body having a top plate on the top surface having a flat area on which the first heated object and the second heated object can be placed simultaneously;
Inside the main body, a plurality of heating coils regularly arranged on a horizontal plane so as to be adjacent to each other,
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit that determines whether or not the first and second to-be-heated objects are 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 controller for controlling 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,
In the display area of the display screen, the control device determines that the heated object placement determination unit determines that the first heated object is placed on the heating coil. To display 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 displays the second icon on the second icon. By detecting that the touch is performed, the first object to be heated corresponding to the first icon is selected as a heating target, and operates so that the heating condition can be input,
A detection electrode for detecting that the first or second object to be heated has approached the display screen;
The control device performs a predetermined correction operation when the detection electrode detects that the first or second object to be heated has approached abnormally.

  According to the induction heating cooker of the second invention, the object to be heated can be specified by touching the display screen, and then the cooking condition can be input, and the object to be heated has approached the display screen. Is detected, and an appropriate corrective action, such as starting the induction heating cooking, stopping or forcibly reducing the heating amount, can be executed by the control device. For this reason, accidents such as overheating deterioration, malfunction, and burnout due to the display screen can be prevented, and the safety of the user can be improved.

The induction heating cooker according to the third invention is
A main body having a top plate on the top surface having a flat area on which the first heated object and the second heated object can be placed simultaneously;
Inside the main body, a plurality of heating coils regularly arranged to be adjacent to each other;
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit that determines whether or not the first or second to-be-heated object 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 controller for controlling 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,
In the display area of the display screen, the control device determines that the heated object placement determination unit determines that the first heated object is placed on the heating coil. To display the first icon,
The control device simultaneously displays the first icon and a second icon for selecting a cooking condition on the display screen, detects that the user touches the first icon, and detects the first icon. 1 to be heated is selected, the user touches the second icon to enable input of heating conditions,
Furthermore, the control device is configured to supply a high-frequency current from an inverter circuit to the heating coil to heat the first object to be heated. When it is moved to the position, the first icon is displayed again on the display screen based on the detection result of the heated object placement determination unit detecting the first heated object after the movement. During the icon display period, display the icon to select the cooking conditions that were running before the move to apply to the cooked food after the move,
A detection electrode for detecting that the first or second object to be heated has approached the display screen;
The control device performs a predetermined correction operation when the detection electrode detects that the first or second object to be heated has approached abnormally.

According to the induction heating cooker of the third invention, the object to be heated can be specified by touching the display screen of the operation unit, and the object to be heated is moved during cooking. When detected, the first icon is displayed again based on the detection result of the heated object at the position after the movement, and is executed before the movement during the display period of the first icon. Since the icon for selecting the application of the cooking condition to be applied to the cooking after movement is displayed, the first icon and the icon for inheriting the cooking condition from the previous one are displayed simultaneously on the display screen. It is possible to easily confirm the application of the cooking conditions that were being executed before the movement, and to resume the cooking that was temporarily interrupted. For this reason, a user's operativity can be improved.
Furthermore, when it is detected that the object to be heated has approached the display screen and it has abnormally approached, an appropriate corrective action such as the start of induction heating cooking, stopping or forcibly reducing the amount of heating is controlled. Can be executed by. For this reason, accidents such as overheating deterioration, malfunction, and burnout due to the display screen can be prevented, and the safety of the user can be improved.

The induction heating cooker according to the fourth invention is
A main body having a top plate on the upper surface, which has a heating area in which an object to be heated can be placed and a non-heating area in which a non-contact power feeding type cooking utensil can be placed;
Inside the main body, a plurality of heating coils regularly arranged to be adjacent to each other;
A heated object placement determination unit that determines whether the heated object is placed immediately above the heating coil;
A feeding coil disposed below the top plate at a position corresponding to the non-heated area;
An input operation unit provided on the upper surface of the main body,
A main power switch provided on the main body;
A first inverter circuit for supplying a high-frequency current to the heating coil;
A second inverter circuit for supplying a high-frequency current to the feeding coil;
A control device for controlling the input operation unit, the first and second inverter circuits, and the voice guide device;
The input operation unit is configured to unify and set cooking conditions for all heated objects placed on the top plate,
The input operation unit has a display screen on which a plurality of types of icons for touch input are displayed,
In the display area of the display screen, the control device determines that the heated object placement determination unit determines that one heated object is placed on the heating coil. Display one first icon corresponding to the object to be heated;
The control device determines that the first icon corresponding to the object to be heated is selected by an operation in which the user touches a predetermined position on the top plate, and then cooks the object to be heated N. Operates so that you can enter conditions,
The display screen of the input operation unit is disposed below the top plate,
A detection electrode for detecting that the object to be heated has approached the display screen and the non-heated area;
The control device performs a predetermined correction operation when it is detected by the detection electrode that the object to be heated has approached abnormally.

Therefore, according to the induction heating cooker of the fourth invention, it is possible to specify a heated object to be heated by touching the display screen of the operation unit, and that the heated object has approached the display screen or the non-heated area. Is detected and an appropriate correction operation such as stop of induction heating cooking, stop or forced reduction of the heating amount can be executed by the control device. For this reason, the display screen and the non-heated area can be prevented from accidents such as deterioration due to overheating, malfunction, and burning, and the safety of the user can be improved.
Furthermore, the abnormal temperature rise around the mounting part of the non-contact power feeding type rotary cooking utensil in the non-heating area can be prevented, and the rotary cooking utensil can be used safely on the upper surface of the induction heating cooker.

  According to the present invention, in a multi-coil induction heating cooker, a user can designate an object to be heated on the display screen, and induction heating in a state where the object to be heated is abnormally close to the display screen. Cooking can be restricted to prevent accidents such as deterioration, malfunction, and burning due to overheating in the display screen, and the safety of the user can be improved.

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 1 which shows the control action of the control apparatus of the induction heating cooking appliance of FIG. Process explanatory drawing of control operation of the control apparatus of the induction heating cooking appliance of FIG. FIG. 2 is a flowchart showing a control operation of the control device for the induction heating cooker of FIG. The top view 6 which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The top view 7 which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The top view 8 which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The top view 1 which shows the example of another display screen of the induction heating cooking appliance which concerns on Embodiment 1 of this invention. 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 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. 17, and its peripheral part. The top view 2 which shows the display screen of the induction heating cooking appliance of FIG. 17, and its peripheral part. FIG. 18 is a flowchart 1 showing a control operation of the control device for the induction heating cooker of FIG. 17. FIG. 2 is a flowchart 2 showing a control operation of the control device for the induction heating cooker of FIG. The top view 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. The top view which shows the operation | movement process of the display screen of the induction heating cooking appliance of FIG. The top view of the induction heating cooking appliance which concerns on Embodiment 5 of this invention. The top view 1 of the induction heating cooking appliance which concerns on Embodiment 6 of this invention. The top view 2 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. It is a top view which shows the induction heating cooking appliance (built-in type) which concerns on Embodiment 7 of this invention.

Embodiment 1 FIG.
Hereinafter, the first embodiment will be described with reference to FIGS. In the first embodiment, the first invention, the second invention, and the third invention are implemented.

  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 the control operation of the control device for the induction heating cooker of FIG. 1. FIG. 10 is a process explanatory diagram of a control operation of the control device for the induction heating cooker of FIG. 1. FIG. 11 is a flowchart 2 illustrating a control operation of the control device for the induction heating cooker of FIG. 1. 12 is a plan view 6 showing an operation process of a display screen of the induction heating cooker of FIG. 13 is a plan view 7 showing an operation process of a display screen of the induction heating cooker of FIG. 14 is a plan view 8 showing an operation process of the display screen of the induction heating cooker of FIG. FIG. 15 is a plan view 1 showing an example of another display screen of the induction heating cooker according to Embodiment 1 of the present invention. FIG. 16 is a plan view 2 showing the operation process of the display screen of 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 portion 1 and a top surface portion 2 whose upper surface is entirely open.

  The top surface portion 2 is attached so as to cover (close) the upper surface opening 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. Is fixed. Note that a thin coating film may be provided on the lower surface of the top plate 3 in order to reduce transparency and prevent unnecessary light from entering the main body 1.

  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 (front surface) of the top plate 3, although it does not appear as a physical structure, a display screen 30 on which a first icon 20 described later appears visually. Although a specific portion of the top plate 3 itself does not emit light or generate an image, in the following description, it is used to visually recognize that characters, figures, and other information are displayed on the display screen 30. Use the expression “display on the display screen”.

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, the range indicated by the one-dot chain line is the 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 / rated minimum 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 (the outermost peripheral edges of the heating coils are not actually in contact with each other). However, this close arrangement state is expressed as “adjacent”).

  The central portion of each heating coil is a cavity 10A, and each sensor 12 of the heated object placement determining unit 11 for determining whether or not the heated object N described later is placed is disposed one by one. is there. 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 ".

  Of the heating coils 10 disposed below the top plate 3, the heating coil 10R disposed on the right front side and the heating coil 10L disposed on the left front side are energized simultaneously with other heating coils 10, or It is not used for cooperative (cooperative) heating methods such as energizing alternately. In other words, it is a special heating coil that is not used for the purpose of inductively heating one object N in cooperation with another heating coil 10.

  Each of the two heating coils 10R, 10L is driven alone, and is driven by a high-frequency power supply supplied from the inverter circuit 25 only by itself. Therefore, dedicated inverter circuits (not shown) for the heating coils 10R and 10L are connected. Note that these two heating coils 10R and 10L are also integrally controlled by the control device 23.

  Each of the two heating coils 10R and 10L is used as a driving source for a rotary cooking appliance (also referred to as “blender” or “mixer”), or a heating cooking appliance (grill appliance), a bottle, or the like by a non-contact power feeding method. It is provided for the purpose of using the cooling device. In addition, the non-contact electric power feeding type electromagnetic induction cooking appliance using the (induction) heating coil below the top plate of the induction heating cooker CH is disclosed in, for example, Japanese Patent Publication Nos. 2014-154532 and 2014-154533. Has already been proposed by the Gazette. A cooling device is proposed in Japanese Patent No. 4744242 (Japanese Patent Publication No. 2007-64557).

  Also in the first embodiment, a rotary cooking utensil or a heating cooking utensil of a non-contact power feeding method is arbitrarily placed on the top plate 3 at a position directly above the heating coils 10R, 10L. By driving the cooking device, for example, the ingredients can be crushed and mixed, or fish can be baked.

  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 method, there are various proposals for the method of the object-to-be-heated object placement determination unit 11 that determines whether or not the object to be heated N is placed. An example is shown in FIG. In addition, an optical sensor that emits light toward the bottom surface of the object to be heated N and detects the presence of the object to be heated N by using the reflected light, or a weak current is applied to the induction heating coil. Various methods such as a method of detecting the presence of the heated object 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. A process 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 a touch panel (or a surface sheet for a touch panel) 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 display screen elements on the liquid crystal display substrate.

  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. When the number of objects to be heated N detected by the object-to-be-heated object placement determination unit 11 is two in the heating area 8, two first icons 20 are displayed. Three are displayed. That is, the number of objects to be heated N that is an object to be induction-heated and the number of first icons 20 are the same.

  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 (front end) of the top plate 3, but the relative sizes of these image diagrams are the actual heating coil 10 and the object to be heated. It does not have to completely match the relative size of N. 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 main body casing 1A, the above-described induction heating coils 10 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 (see FIG. (Not shown) are individually attached by 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 6 is disposed. The grill chamber is partitioned by a metal plate. On the left side of the front face of the main body casing 1A, a grill door 6A that covers the front opening of the grill chamber so as to be openable and closable is supported by the main body part 1 with a rail mechanism so as to be openable and closable (movable back and forth). Has been.

  Further, a first air inlet 16 is formed on the rear right corner side of the main body housing 1A. The first air inlet 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), and a circuit board (not shown) for supplying high-frequency power. ) And cooling air for cooling the induction heating coil 10. In addition, although not shown in figure, the electric blower for generating the cooling air is installed in the main body housing 1A. In addition, a second air inlet (not shown) is provided on the back surface of the main body housing 1A for the same purpose as the first air inlet 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 main body housing 1A. Further, an exhaust port 18 is formed in the upper surface on the left side of the rear portion of the main body casing 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. For example, when it is pressed once, it is turned ON, and when it is pressed again, it is turned OFF, and this is repeated.

(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 (calculation control unit). The storage unit includes an energization control program corresponding to various cooking menus, A display operation control program for controlling the drive circuit 37 of the liquid crystal display screen constituting the display screen 30 is stored (stored) in advance. 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 includes a first display area 40, a second display area 41, and a third display area 42, so that one screen is formed to form one screen. Although it is configured mainly, it is relatively vulnerable to heat, so 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, it is controlled as an abnormal standby state. It is determined by the device 23 (only when it is in the range of 60 ° C. to 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 main body casing 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, at least the abnormality monitoring data of the main part of the induction heating cooker (temperature of the display screen 30 described above as an example) in the period from the abnormal preliminary state to the emergency stop is stored in the storage device 23R of the control device 23. Are sequentially stored in time series. The abnormality monitoring data stored in the storage device 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”. The cooking menu includes a “manual cooking menu” for heating and cooking until a time determined by the user with a heating power set by the user, a heating power, a heating temperature, etc. Is automatically determined, and there is an “automatic cooking menu” for completing a series of cooking processes.

  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 25 may be provided. For example, when there are a total of 40 induction heating coils 10 (5 in 1 column in the vertical direction and 8 in 1 column in the horizontal direction), they are divided into two groups of 20 and the first group is divided into the first group. One inverter circuit may be in charge, and the second group may be in charge of the second group. A larger number of inverter circuits 25 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, the heating power of induction heating and the start / stop of energization can be individually controlled in units of one heating coil 10.

  A drive circuit 27 drives a plurality of radiant electric heaters 38, for example, sheathed heaters, installed in the inside of the grill of the grill unit 6. The sheathed heater 38 is installed horizontally, for example, near the ceiling and the bottom 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. The temperature detection information is received from a plurality of temperature sensors (not shown) for detecting the temperature of each, 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, this material detection (determination) means is not described in detail. Thus, it can be determined whether the article to be heated N is formed of a nonmagnetic material such as aluminum or copper or a magnetic material such as iron or stainless steel. Moreover, if the to-be-heated object N leaves | separates from the top of the induction heating coil 10, it can detect that input current reduces rapidly and the to-be-heated object N has moved to the other place.

  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. If the object to be heated N moves away from the top of the induction heating coil 10, the light emitted from the optical sensor does not reflect. Therefore, the object N to be heated becomes a specific heating coil due to the reduction of the reflected light. It can be detected that it is not directly above 10 and is moving to another location.

  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 is almost no case of using an object to be heated having a small pan bottom such as in this embodiment 1, and in this Embodiment 1, the minimum object N to be heated is the maximum of its bottom surface (in the case of a circle). The diameter is about 18 cm to 20 cm, and the relationship is such that one heated object N <b> 1 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.

  In FIG. 2, reference numeral 90 denotes a detection electrode serving as an approach detection means. This detection electrode is an electrode of a type that detects from the touch of the user and the change in capacitance that the heated object N approaches, and an electrode wire (band-like) made of a transparent metal film on the lower surface of the top plate 3. May be fixed by vapor deposition or adhesion. The detection electrode for proximity detection may not be a capacitance type. For example, a piezoelectric element may be provided on the upper surface of the top plate 3, and a signal having a voltage of a predetermined value or more may be generated depending on the weight of the object N to be heated. Further, a temperature detection element such as an infrared sensor that senses the temperature of the heated object N and detects the approach of the object N to be heated is used as an approach detection means in combination with a capacitance type detection electrode. It may be adopted. However, as will be described later, when performing control for detecting the approach of the heated object N at the stage before the start of induction heating cooking, the temperature detecting element for sensing the heat radiated from the heated object N as described above However, other methods such as a capacitance type are preferable. The output signal of the detection electrode 90 is input to the control device 23 and is used to determine whether or not the heated object N is approaching.

  Further, the first heated object N1 on the left side indicated by a broken line in FIG. 3 has a maximum bottom surface diameter of about 22 cm in contact with the top plate 3 and has a bottom surface shape close to a perfect circle. The second heated object N2 on the right side 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.

  As shown in FIG. 3, the detection electrode (approach detection means) 90 is composed of five independent detection electrodes. That is, the detection electrode 90B disposed on the back side of the display screen 30 on the side close to the heating area 8, the operation button 15A of the main power switch 15 and the (frontmost) induction heating coil 10 on the right side of the display screen 30. 90FR provided so as to partition the electrode, a detection electrode 90LR provided so as to partition the induction heating coil 10 on the left side of the display screen 30, and the right edge of the heating region 8 , Along the left side edge of the heating region 8 in the front-rear direction along the left side edge of the heating region 8 and the detection electrode 90RS provided long in the front-rear direction at the position immediately outside (for example, the outer side with an interval of 10 mm) The detection electrodes 90LS are provided long, and the detection outputs of these individual electrodes are input to the control device 23 independently. In the following description, these detection electrodes are collectively referred to as “detection electrode 90”.

  In FIG. 4, reference numeral 45 denotes an operation stage where the first icon 20 is displayed when the heated object N is selected, and the user touches the first icon 20 to touch the heated object N such as a pan. 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 the position information of the heated object N 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 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. It can be quickly confirmed by the order information close to 20.

  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. Since they are different, 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 technology 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 for one object N is 150 W, for example, and the maximum thermal power is 3000 W. However, the maximum thermal power value and the minimum thermal power value that the control device 23 actually commands each heating coil 10 are determined in advance depending on the number of the heating coils 10 used for heating the one object N to be heated. Yes.

  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”. The “normal stew mode” is one type of the automatic cooking menu described above.

  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 an automatic cooking menu (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 according to the automatic cooking mode by the control device. 23, the eighth icon 75 is displayed when the cooking mode is selected by touching the cooking mode icons (third icons) 65, 66, and 67. Appears on screen 30. 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 material determination of the to-be-heated object N is 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. (S6A). In addition, an object to be heated N determined that the whole or a portion occupying a considerable area of the bottom surface is formed of a non-magnetic material such as copper or aluminum is also determined as an inappropriate object to be heated N, and an error is notified. Proceeding to the processing step (S20A), a message to that effect is displayed on the display screen 30, and also from the voice guidance device 31, a notification such as “This cooking utensil cannot be used because the material does not match” is given by voice.

  If the determination in step S6A results in OK, then a determination process is performed as to whether or not the placement position of the heated object N is appropriate (S6B). In this case, the determination of “appropriate” is determined by whether the detection electrode 90 is directly above or excessively approached. For example, when the heated object N is excessively placed in front and the presence of the heated object N is detected at the detection electrode 90B on the rear side of the display screen 30, the bottom surface of the heated object N is detected. In this case, the control device 23 moves away from the detection electrode 90B, that is, heated backward. A “corrective action” is made to advise the user to change the position of the object N.

Specifically, the “correction operation” in the first embodiment includes the following operations.
(1): The first icon 20 is not displayed on the display screen 30 (therefore, since the user cannot select the first icon 20 and specify the object to be heated, the subsequent operation input is not performed. In a state where it is not possible, an advice information display unit 45 (described later) on the display screen 30 displays characters (display information 45A) as being in an inappropriate placement position (S24B).
(2): The voice synthesizer 31 informs by voice that the heated object N is placed at an inappropriate position (S24B).
Note that the notification is not simply an ambiguous notification of an inappropriate position, but a notification such as “slightly away from the display screen 30”. Since the position and presence of the detection electrode 90 cannot be visually recognized by the user from above the top plate 3, advice information based on the detection electrode 90 is not output.
Then, if the user understands these notification contents and repositions the object N to be heated at an appropriate position, the position of the object N is corrected (S24C), and the object N is mounted again. A determination process is performed to determine whether the placement position is appropriate (S6B).

  If the object N to be heated is not repositioned and left as it is, it cannot proceed to the subsequent steps, so induction heating cooking cannot be started. That is, in the first embodiment, before the induction heating is started, the placement position of the object to be heated N is limited to an appropriate range, the induction screen is started and the display screen 30 receives the high heat of the object to be heated N. The situation that breaks down is avoided.

  If the result of the determination in step S6B is OK, the schematic placement position of the object to be heated N is shown next in order to schematically and conceptually indicate the placement position of the object to be heated N on the display screen 30. 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 S21, 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. It is desirable to notify information such as whether it is more rightward, leftward, or rearward with reference to (S21). 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).

Even when the heating operation is started, after that, the control device 23 always analyzes the output position of the detection electrode 90 and monitors the placement position of the object N to be heated.
That is, the heating coil 10 to be supplied with the high-frequency power by the heated object placement determination unit 11 for determining whether or not the heated object N is placed immediately above the heating coil 10 is always a control device. However, in addition to the monitoring operation of the object-to-be-heated object placement determination unit 11, the control device 23 is controlled by any one of the five detection electrodes 90B, 90FR, 90FL, 90RS, and 90LS. Whether or not the heated object N is approaching is repeatedly checked at short time intervals (for example, several seconds) (S15).

  If, in step S15, the approach of the heated object N is detected by the detection electrode 90B arranged behind the display screen 30, the control device 23 is configured to correct the placement position of the heated object N. Recommends the user to move away from the detection electrode 90B, that is, to change the position of the object N to be heated backward, and performs a “correction operation” to limit the heating operation.

Specifically, the “correction operation” in the first embodiment includes the following operations.
(1): In an advice information display section 45 (described later) on the display screen 30, information indicating that the placement position is inappropriate is displayed as characters (display information 45A) (S22).
(2): The voice synthesizer 31 informs by voice that the heated object N is placed at an inappropriate position (S22).
(3): It is checked whether the ambient temperature around the display screen 30 is within a predetermined safe temperature range through the temperature detection circuit 24.
(4) A command signal is issued to the inverter circuit 3 so as to reduce the heating amount currently being executed to, for example, half or less. For example, when cooking is performed with the set thermal power set to 2 kW, a command is given to reduce the temperature to 500 W within a few seconds (S22).

  In exceptional cases, when “fried food” is executed as a cooking menu, it is assumed that hot oil is contained in the heated object N, and the user is heated such as the tempura pan. Since there is a risk in moving the object N, in the case of such an exceptional cooking menu, the operation speed of the electric fan (not shown) for internal cooling of the main body 1 is changed, While increasing the amount of cooling air supplied to the periphery of the display screen 30, suppressing the set heat power to a minimum, and further monitoring the ambient temperature of the periphery of the display screen 30 through the temperature detection circuit 24, The control device 23 also has an operation program for performing a processing step of cooking by heating as it is.

As in step S24B, the notification of the advice information display unit 45 (to be described later) on the display screen 30 and the speech synthesizer 31 is not simply an ambiguous notification of “inappropriate position”. “Slightly backwards away from” and so on. Even in this case, since the position and presence of the detection electrode 90 cannot be visually recognized by the user from above the top plate 3, advice information based on the detection electrode 90 is not output.
If the user understands the contents of the notification and puts the heated object N at an appropriate position, the position of the heated object N is corrected (S23), and the loaded object N is placed again. A determination process is performed to determine whether the placement position is appropriate (S15).

  If the heated object N is not repositioned and left as it is, induction heating cooking cannot be continued. That is, in the first embodiment, since the process proceeds to the step of stopping the heating operation (S17), the placement position of the object N to be heated is limited to an appropriate range even during the induction heating, and the object is covered during induction heating. The display screen 30 is prevented from being burned, deformed, or broken due to the high heat of the heated object N.

  In the case of returning from step S23 to step S15, when the approaching state of the article N to be heated is not detected, the control device 23 cancels the heating amount suppression performed as one of the correction operations, A command signal for returning to the heating amount executed in step 1 is issued. For example, as described above, the heating power that has been forcibly changed from 2 kW to 500 W is returned to 2 kW.

  When a heating stop operation is performed by the user or when a set time called timer cooking is exceeded (S16), the inverter circuit 25 is stopped (S17). 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, the heated object placement determination unit 11 is again inquired as to whether or not a new heated object N (for example, N2) has been placed (S18). 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 S18 that a new object to be heated N (N2) has not been detected and the object to be heated N (N2) has not been placed, the process proceeds to the next step S19. In step S19, when the user turns off the main power switch 15 or when 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 (S20).

  However, if a new object to be heated N2 is placed in step S18, the process returns to step S5 to determine the material of the object to be heated N2.

Next, “movement of the object N to be heated during the cooking operation” (change of the placement position), which is a characteristic part of the first embodiment, will be described with reference to FIG.
Explanation is made on the assumption that another cooking is simultaneously performed using the new second heated object N2 while the inverter circuit 25 is driven and the first heated object N1 is heated (S31). To do.

  When the first object to be heated N1 is used in the left part of the heating area 8, the second object to be heated N2 (for example, cooking) whose area of the bottom surface is much larger than that of the first object to be heated N1. If you want to use the iron plate for the first heating object N1, if the mounting position of the first heating object N1 is not changed, the peripheral edges of the first heating object N1 and the second heating object N2 come into contact with each other It is not preferable to get on.

  Therefore, the first heated object N1 may be moved to the right part of the heating area 8 and the second heated object N2 may be placed on the left side of the heating area 8 (for example, the kitchen on the left side of the induction heating cooker CH). When furniture (for example, a sink equipped with water or drainage facilities) is located, the left side is convenient because materials are input from the sink or hot water in the heated object N is poured into the sink. Is).

Next, FIG. 10 will be described. FIG. 10 shows basic operation steps when the first object to be heated N1 is moved to another place.
In FIG. 10, S31 shows the stage (step) which started the heating cooking operation | movement of the 1st to-be-heated material N1. Thereafter, when the first heated object N1 is moved to another place (right side portion of the heating area 8) before the timing (S36) for placing the second heated object N2, the placement of the heated object is performed. Since the determination unit 11 is not on the specific heating coil 10, the heated object placement determination unit 11 that monitors the position where the first heated object N1 is placed is a heating object. Since a certain first heated object N1 disappears from the placement portion, that is, detects a no-load state and transmits it to the control device 23, the control device 23 temporarily stops induction heating cooking. And the said to-be-heated material mounting determination part 11 detects that the 1st to-be-heated material N1 was placed in another position of the heating area 8 (S32).

  On the other hand, after the time when the first heated object N1 is changed to another position on the top plate 3 during cooking, the second heated object N2 is placed on the left side portion of the heating area 8. If this is the case (S36), the heated object placement determining unit 11 determines the placement of the second heated object N2 (S37).

  When another heated object N2 is newly placed while the first heated object N1 is temporarily stopped, the heating condition setting step S33 for the first heated object N1 that is temporarily stopped The priority relationship with the heating condition setting step S38 for the second object to be heated N2 is the processing step (SX) in which the former is prioritized, so the setting of the heating condition for the first object to be heated N1 is prioritized. Then, the setting of the heating cooking conditions is completed (S34), and when the user gives a heating restart command, the heating cooking is restarted (S35).

  HT shown in FIG. 10 is a “heating condition setting suspension period” starting from the start of movement of the first object to be heated N1 and ending with the completion of setting the cooking conditions for the first object to be heated N1. That is, during this period, even if the timing at the time (S36) when the second heated object N2 is placed in the heating area 8 is changed back and forth, the first heated object N1 always remains. The cooking condition setting has priority over the cooking condition setting of the second object N2.

  In addition, about the 1st to-be-heated material N1 paused, when a user commands completion | finish of cooking with the input operation part 5, in other words, in a heating condition setting suspension period HT, a user is 1st. When the operation for finishing the cooking of the heated object N1 is performed, the heating condition setting suspension period HT is canceled immediately, and the cooking condition setting for the second heated object N2 can be started immediately. Further, it is natural that the first icon 20 of the second heated object N2 is displayed on the display screen so that the cooking conditions for the second heated object N2 can be set.

  As is clear from the above description, the setting of the cooking condition is suspended for the second object to be heated N2, and this suspension is the time when the setting of the cooking condition for the first object to be heated N1 is completed (S34). (S39). And the setting of heat cooking conditions is completed (S40), and if a user gives the instruction | indication which starts heat cooking, heat cooking will be restarted (S41).

  As described above, in the control device 23, when one object to be heated N1 is temporarily stopped during the cooking operation, another object to be heated N2 is placed in the heating area 8. In this case, the setting of the heating condition of the first heated object N1 that is temporarily stopped is prioritized over the setting of the heating condition of the second heated object N2, and the first heated object N1 is set as soon as possible. It is an operation program that resumes cooking.

Next, FIG. 11 will be described. FIG. 11 is a flowchart showing the control operation of the control device 23 of the induction heating cooker of FIG.
In FIG. 11, S <b> 51 to S <b> 70 are operation steps based on a control program of a microcomputer that constitutes the core of the control device 23.

  Hereinafter, description will be made in order from the start S51. As described above, after induction heating cooking is started for the first heated object N1, the presence or absence of the first heated object N1 is checked by the heated object placement determination unit 11 at regular intervals. (S52). Therefore, when the first heated object N1 is changed to another place (however, in the heating area 8), it is confirmed that the first heated object N1 does not exist in the heating area at the start of cooking. It is detected by the control device 23 based on a signal from the heated object placement determination unit 11 (S52).

  The control device 23 urgently stops the drive of the inverter circuit 25 and switches to a special heating mode (movement mode) that involves temporary movement (S53). Immediately after the presence of the first heated object N1 is detected at a new position (S54), the material detection (judgment) means 36 of the heated object N is activated, and the material of the heated object N and the bottom surface are detected. The control device 23 determines the area, shape, and the like of the object based on a signal from the object placement determination unit 11. And when it determines with the material and magnitude | size of the to-be-heated material N1 agree | coinciding with the material and magnitude | size of the 1st to-be-heated material N1 used by heating cooking operation until just before (S55A). It is determined that the previous first heated object N1 has been placed again.

  Then, in the next step (S55B), “determination of presence / absence of approach of heated object N and correction process 1” as in steps S15, S22, and S23 of FIG. 9 is performed. Although detailed description of the operation step of this step (S55B) is omitted, the position of the object N to be heated is detected by the detection electrode 90 as in the results of steps S15, S22, and S23 of FIG. If approached, the correction is recommended. Further, when the position of the object to be heated N is not detected by the detection electrode 90, such correction processing 1 is not executed and the process proceeds to the next step (S56). In this step (S55B), since the heating operation is temporarily stopped in the stage of step (S53), the controller 23 performs the current execution on the inverter circuit 3 as in step (S22). A command signal that reduces the amount of heating inside to, for example, less than half is not issued.

  In the next step (S56), the first icon 20 for selecting the first heated object N1 on the display screen 30 appears on the display screen 30.

  Next, on the display screen 30, characters that recommend the designation of the object to be heated N by touching the first icon 20 </ b> A are shown, and information for identifying the object to be heated N from the voice guide device 31 is also expressed by voice. Notification is made (S57). The information for identifying the object N to be heated is, for example, the position of the object N to be heated such as “right rear” or “left rear” on the top plate 3 with reference to the position of the display screen 30. Is a position or azimuth information that simply indicates.

  When the first icon 20A is selected by the user (S58), in the next step (S59), should the heating cooking conditions that have been carried out immediately before be taken over and applied to the first object N1 to be heated? Confirmation is required. Also in this step, the voice guidance device 31 informs the user that he / she wants to select whether or not to continue the cooking conditions that have been carried out until just before.

  Next, on the display screen 30, a display for requesting confirmation of whether or not to apply the cooking condition as it is to the first heated object N1 is performed (S60). The display screen 30 displays an icon for selecting whether or not the cooking condition is to be inherited, and a determination is made as to whether or not the cooking condition has been selected (S60).

  If it is selected that the cooking conditions are to be inherited, it is then determined whether a cooking operation command has been issued (S61). If a heating operation command has been issued, the inverter circuit 25 is driven again. To resume cooking (S62). Then, the process ends after the set time has elapsed (S63).

  On the other hand, if it is not selected in step S60 to inherit the cooking conditions, a display for newly setting the cooking conditions is displayed on the display screen 30, and the setting of the cooking conditions is recommended. (S67). Also in this step, the voice guidance device 31 similarly informs by voice that a new cooking condition is desired.

  When a new cooking condition is set on the display screen 30 (S68), a heating cooking condition such as thermal power is set, and when a heating operation command is issued (S69), the inverter circuit 25 It is driven again and cooking is resumed (S62).

  Then, in the next step (S63), “determination of presence / absence of approach of heated object N and correction process 2” as in steps S15, S22, and S23 of FIG. 9 is performed. Although detailed description of the operation step of this step (S63) is omitted, the position of the object N to be heated is detected by the detection electrode 90 as in the results of steps S15, S22, and 23 of FIG. If approached, the correction is recommended. Further, when the position of the object to be heated N is not detected by the detection electrode 90, such correction processing 1 is not executed and the process proceeds to the next step (S64). In this step (S63), since the heating operation is started at the stage of step (S62), the control device 23 is currently executing on the inverter circuit 3 as in step (S22). A command signal is issued to reduce the amount of heating to, for example, half or less. And when it exists in the position where the position of the to-be-heated material N is not detected by the detection electrode 90, it can progress to step (S64), without passing through such a step (S63).

  When the first heated object N1 is not detected anywhere in the heating area 8 in step 54, the first heated object N1 is not detected even after 3 minutes have elapsed after waiting for 3 minutes. The control device 23 determines that cooking on the first object to be heated N1 has been stopped, and proceeds directly to the end processing of the cooking operation (S65). For example, the first object to be heated N1 is manually boiled (optionally set with thermal power) and boiled with vegetables or the like, cooking is completed with the bowl, and unnecessary in the first object to be heated N1. In order to throw away the hot water in the sink, when the user lifts the first heated object N1 and moves it to the sink, and places the heated object N1 in the sink as it is, it is not necessary to resume induction heating. Therefore, the process in which the control device 23 automatically regards the end of cooking as described above is convenient.

  In addition, in step S55, the material and size of the heated object N that is newly detected are matched with the material and size of the first heated object N1 used in the cooking operation until just before. When it is not what was done, cooking with the 1st to-be-heated material N1 is stopped, and it determines with another to-be-heated material having been mounted. And it switches to "mode which uses another to-be-heated object" like step S5 shown in FIG. 9, and starts a new heat cooking via step S5-21 shown in FIG. it can. For example, the person who is cooking with a bowl of vegetables etc. manually (optionally setting firepower) with the first heated object N1 and changing to a larger pot (heated object N) during cooking with the firewood However, if it is determined that cooking with a boil can be done without any spilling of hot water, another large heated object N may be placed in the middle and cooked with a boil. This is convenient because it is determined that an object to be heated N having a different length has been placed, and cooking is started after waiting for the setting of new cooking conditions.

Next, FIGS. 12 to 16 will be described. 12-16 is a top view which shows the operation | movement process of the display screen 30 of the induction heating cooking appliance CH.
FIG. 12 shows an example of the display screen 30 at the stage of step S52 in FIG. As is apparent from FIG. 12, the first icon 20A is displayed in the first display area 40. In this scene, when the first icon 20A is touched, detailed cooking conditions during cooking, for example, information such as the remaining cooking time can be heard from the voice guide device 31, and this first display area is also displayed. Such information is temporarily displayed (for example, only for 10 seconds) in numerals and characters in 40, and after a few seconds, the screen automatically returns to the original display content screen.

Next, FIG. 13 shows an example of the display screen 30 at the stage of step S57 in FIG. As is apparent from FIG. 13, in the first display area 40, the first icon 20A is located on the right side as indicated by the dotted arrow from the original position of the first icon 20A indicated by the dotted line. It has been moved to the part. A result of moving the position of the first heated object N1 to the right side portion of the heating area 8 during the heating is displayed by the first icon 20A.
In this scene, the character information 55 “after moving” is displayed so as not to cause misunderstanding when the first icon 20A is touched, and the number “1” is the first in the process of touching. It is displayed on the first icon 20A. Although it is not always necessary to display the original position of the first icon 20A on the display screen 30 as shown by the dotted circle in FIG. 13, the user can be heated by the display. It is easy to imagine the movement of the object N. Of course, even if the user touches the original position of the first icon 20A, nothing can be input and the display content of the display screen 30 cannot be changed.

  Next, FIG. 14 shows an example of the display screen 30 at the stage of step S59 in FIG. As apparent from FIG. 13, it is selected to apply the cooking conditions before moving (heating power, heating time, driving pattern of the heating coil 10, etc.) to the first heated object N <b> 1 whose cooking is interrupted. A condition selection icon 56 to be applied and a condition selection icon 57 for selecting to apply a new cooking condition are displayed at the same time. By touching any one of these icons, the processing result of step 60 in FIG. change. That is, if the condition selection icon 56 is touched, “YES” is determined in the step 60. In this scene, the number “2” in the second meaning of the touch operation is close to the condition selection icons 56 and 57 so as not to mislead when the condition selection icons 56 and 57 are touched. It is displayed.

  Next, FIG. 15 shows an example of the display screen 30 at the stage of steps S57 and S59 in FIG. 11, which is a modified example of FIGS. As is apparent from FIG. 15, in the first display area 40, the first icon 20A is moved to the right side portion. That is, the first icon 20A can understand the result of moving the position of the first heated object N1 to the right side portion of the heating area 8 during the heating. Further, the touch operation on the first icon 20A and the touch operation on the condition selection icons 56 and 57 are simultaneously displayed on the display screen 30 so as to be performed on one screen.

Next, FIG. 16 shows an example of the display screen 30 at the stage of steps S58 and S59 in FIG. 11, which is a modification of FIGS.
As is apparent from FIG. 16, in the first display area 40, the first icon 20A is moved to the right side portion, and in order to clarify that the user has performed a touch operation, the first icon The color of itself is changed from that of FIG. In the first display area 40, the advice information display unit 45 displays the character information 58 indicating that the first heated object N1 has been confirmed as a cooking utensil to be used.

  Note that the “preceding heated object priority mode” including steps S53, S59, and S60 in FIG. 11 is not applied to all induction heating of the heated object N, but the heating cooking process has progressed more than a certain amount, or heating. You may make it apply only to cooking when predetermined time passes since the start. For example, in a situation where the cooking object (vegetables, meat, cooking liquid, etc.) in the heated object N has already been changed by heating after 5 minutes have passed since the start of the automatic cooking menu, the heated object If N is paused in the middle of heating and cooking, if the stop time is long, the cooking finish may be adversely affected even if cooking is resumed, so cooking is resumed under the original cooking conditions as soon as possible. Since cooking should proceed in a predetermined heating sequence, it is meaningful to apply only to cooking in which the cooking process has progressed more than a certain amount or cooking when a predetermined time has elapsed since the start of heating. .

(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 1 having a top plate 3 on the top surface having a flat area on which the first heated object N1 and the second heated object N2 can be placed simultaneously;
A plurality of heating coils 10 regularly arranged so as to be adjacent to each other inside the main body 1,
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A heated object placement determination unit 11 for determining whether the first or second heated object N1 or N2 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;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25, and the voice guide device 31, and
The input operation unit 5 is configured to integrate and set cooking conditions for all the objects to be heated N placed on the top plate 3;
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 display screen 30 on the basis of the result that the heated object placement determining unit 11 determines that the heated object N is placed on the heating coil 10. The number of first icons 20 corresponding to the number of the objects to be heated N is displayed in the area 40,
The control device 23 determines that the first icon 20A corresponding to the first object to be heated N1 has been selected by an operation in which a user touches a predetermined position on the top plate 3, and thereafter It operates so that the cooking conditions for the first heated object N1 can be input,
The display screen 30 of the input operation unit 5 is disposed below the top plate 3,
A detection electrode 90 (as an approach detection means) that detects that the first or second object to be heated N1 or N2 has approached the display screen 30;
The control device 23 performs a predetermined corrective action when the detection electrode 90 detects that the first or second object to be heated N1 or N2 has approached abnormally. .

  According to the induction heating cooker CH of the first invention, the heated object N to be heated can be specified by touching the display screen 30 of the input operation unit 5, and the heated object N approaches the display screen 30. If it is detected and an abnormality is approached, the control device 23 can execute an appropriate corrective action such as starting the induction heating cooking, stopping or forcibly reducing the heating amount. For this reason, accidents such as overheating deterioration, malfunction, and burnout due to the display screen can be prevented, and the safety of the user can be improved.

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 1 having a top plate 3 on the top surface having a flat area on which the first heated object N1 and the second heated object N2 can be placed simultaneously;
A plurality of heating coils 10 regularly arranged on a horizontal plane so as to be adjacent to each other inside the main body 1;
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A heated object placement determination unit 11 for determining whether or not the first and second heated objects N1 and N2 are 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;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25, and the voice guide device 31, and
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 determines the display screen based on a result that the heated object placement determination unit 11 determines that the first heated object N1 is placed on the heating coil 10. The first icon 20 is displayed in the display area 40 of 30,
The control device 23 displays second icons 60A to 60K, 61 and 62 for selecting a cooking condition on the display screen 30 when it is detected that the user touches the first icon 20. Then, by detecting that the user touches the second icon, the first object N1 corresponding to the first icon 20 is selected as a heating target, and the heating condition can be input. Works like
A detection electrode 90 (as an approach detection means) that detects that the first or second object to be heated N1 has approached the display screen 30;
The control device 23 performs a predetermined corrective action when the detection electrode 90 detects that the first or second object to be heated N1 or N2 has approached abnormally. .

  According to the induction heating cooker CH of the second invention, the object to be heated N to be heated can be specified by touching the display screen 30, and then the cooking condition can be input, and the object to be heated N is displayed on the display screen. When approaching 30 is detected, and when approaching abnormally, the control device 23 can perform appropriate corrective actions such as starting the induction heating cooking, stopping or forcibly reducing the heating amount. . For this reason, accidents such as overheating deterioration, malfunction, and burning due to the display screen 30 can be prevented, and the safety of the user can be improved.

As is clear from the above description, the induction heating cooker CH shown in the first embodiment implements the third invention.
That is, the induction heating cooker CH in Embodiment 1 is
A main body 1 having a top plate 3 on the top surface having a flat area on which the first heated object N1 and the second heated object N2 can be placed simultaneously;
A plurality of heating coils 10 regularly arranged so as to be adjacent to each other inside the main body 1,
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A heated object placement determination unit 11 for determining whether the first or second heated object N1 or N2 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;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25, and the voice guide device 31, and
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 determines the display screen based on a result that the heated object placement determination unit 11 determines that the first heated object N1 is placed on the heating coil 10. The first icon 20 is displayed in the display area 40 of 30,
The control device 23 simultaneously displays the first icon 20 and the second icons 60A to 60K, 61, and 62 for selecting a cooking condition on the display screen 30, and the first icon 20 The first object to be heated N1 is selected by detecting that the user has touched, and the heating condition is input by detecting that the user has touched the second icons 60A to 60K, 61 and 62. Enable
Further, the control device 23 supplies a high-frequency current to the heating coil 10 from the inverter circuit 25 to cook the first heated object N1. When moved to another position on the plate 3, the first icon 20 is displayed based on a result of the heated object placement determination unit 11 detecting the first heated object N1 after the movement. Display again on the screen 30, and during the display period of the first icon 20, display an icon for selecting to apply the cooking condition that was executed before the movement to the cooking after the movement,
A detection electrode for detecting that the first or second object to be heated has approached the display screen;
The control device performs a predetermined correction operation when the detection electrode detects that the first or second object to be heated has approached abnormally.

According to the induction heating cooker of the third invention, the object to be heated can be specified by touching the display screen of the operation unit, and the object to be heated is moved during cooking. When detected, the first icon is displayed again based on the detection result of the heated object at the position after the movement, and is executed before the movement during the display period of the first icon. Since the icons 56 and 57 for selecting the application of the cooking conditions to the cooking after movement are displayed, the first icon 20 and the icons 56 and 57 for inheriting the cooking conditions from the previous ones are displayed. Can be simultaneously confirmed on the display screen 30, and the application of the cooking conditions that had been executed before the movement can be easily set, and the temporarily stopped cooking can be smoothly resumed. For this reason, a user's operativity can be improved.
Furthermore, when it is detected that the object N to be heated has approached the display screen 30 and it has abnormally approached, appropriate corrective actions such as the start of induction heating cooking, stop or forced reduction of the heating amount are taken. It can be executed by the control device 23. For this reason, accidents such as overheating deterioration, malfunction, and burning due to the display screen 30 can be prevented, and the safety of the user can be improved.

(Significance of detailed configuration 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, the placement status of the object to be heated N is displayed on the display screen 30 with the first icon 20, and after the display of the first icon 20, the voice guidance device 31 causes the first icon to be displayed. 20 is used as a reference for performing touch operation on the touch panel 20 (for example, the direction in which the first icon 20 is located when viewed from the touched position). Since the sound is guided by the device 31, 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 first icon that is no longer necessary after the first icon 20 is touched. The display area of the display screen can be secured by removing the icon 20 and can be used for setting the thermal power, 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 the first icon 20 is touched, the unnecessary first icon 20 can be erased to secure the display area of the display screen, which can be used for setting the 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. Either one is displayed in the guide area 45 as display information 45A, 58 such as characters. For this reason, even if the user is unfamiliar with the use of the induction heating cooker or the user who has a hearing impairment and cannot clearly understand the meaning and operation steps of the first icon 20, the first icon When 20 is displayed, it is 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 on the near side of the front end of the induction heating area 8 by the heating coil 10. In the display screen 30, the first icon 20 is displayed on 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.

  (10): As shown in step (S6B) of FIG. 9, the control device 23 indicates that the first or second object to be heated N1 or N2 has approached the display screen 30 by induction heating. Detect at the stage before cooking starts. And when heated object N is placed in an appropriate position (heating area 8), induction heating cooking can be started for the first time, so in a cold stage before heated object N such as a pan or a frying pan becomes hot. The mounting position can be changed easily and safely.

  (11): As shown in step (S7) of FIG. 9, the control device 23 indicates that the first or second object to be heated N1 or N2 has approached the display screen 30 by induction heating. The first icon 20 for selecting the heated object N1 is displayed for the first time when the heated object N is placed in an appropriate position (heating area 8). . Therefore, the user can easily and safely change the placement position before the heated object N such as a pan or a frying pan reaches a high temperature in the initial stage, thereby improving operability. be able to.

  (12): As shown in steps (S6B, S15) of FIG. 9, the control device 23 indicates that the first or second object to be heated has approached the display screen 30 by N1, N2. Since it is detected at the stage before the start of induction heating cooking and at the stage after the start, it is always monitored whether the object N to be heated is placed in an appropriate position (heating area 8) even during induction heating. The heated object N such as a hot pan or a frying pan can be prevented from approaching the display screen 30.

  (13): As shown in FIG. 3, the detection electrodes 90 are installed not only on the rear side of the display screen 30 but also on the left and right sides of the heating area 8. For this reason, it is also prevented that induction heating cooking is started or continued in a state where the heated object N protrudes excessively in the right or left direction of the induction heating cooker CH. Therefore, the malfunction which the upper surface of the kitchen furniture adjacent to the induction heating cooking appliance CH burns out or deteriorates with high heat can also be avoided. As shown in FIG. 3, the detection electrode 90 is not disposed on the rear side of the heating area 8. This is because there are the exhaust ports 17 and 18 at the rear, and even if the heated object N protrudes excessively to a certain limit, there is no major problem compared to the front and left and right sides. For reasons. Of course, the detection electrode 90 may be installed at the rear position.

Embodiment 2. FIG.
17 to 20 show an induction heating cooker (built-in type) according to Embodiment 2 of the present invention. FIG. 17 is a plan view showing the operation process of the display screen of the induction heating cooker. FIG. 18 is a plan view 1 showing a display screen of the induction heating cooker of FIG. 17 and its peripheral portion. FIG. 19 is a plan view 2 showing the display screen of the induction heating cooker of FIG. 17 and its peripheral part. FIG. 20 is a flowchart showing the control operation of the control device for the induction heating cooker of FIG. Note that the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted as much as possible.

  In FIG. 17, 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) that instructs the induction heating operation to stop. ).

  In FIG. 17, 61 is a thermal power adjustment icon (second icon), 62 is also a thermal power adjustment icon (second icon), and 65 to 67 are cooking mode icons (third icon). .

  FIG. 17 shows the display screen 30 when the stew mode icon 65 (which is one of the automatic cooking menus) is selected, and “cooking mode / operation information” is displayed on the cooking menu display section 82. The 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. 17 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. 17, 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 in a different color so that it can be easily distinguished as compared with the other display frames 84B to 84H. The

  In FIG. 17, 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. 17 each 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. 18 will be described.
The display screen 30 is arranged in front of the front end of the induction heating area 8 by the heating coil 10 (this is the same as in the first embodiment). However, in the second embodiment, for the purpose of detecting that the user has touched the back side and the left and right sides of the display screen 30 and for the purpose of detecting that the heated object N has approached, the capacitance The three detection electrodes 90 (90B, 90R, 90L) for detecting these two situations are provided from the change in the position, and the control device 23 is touched by the user on the detection electrode 90 when the first icon 20 is selected. One of the features is that when the voice guidance device 31 is detected, an alarm is issued by the voice guide device 31.

  In addition, even when the object to be heated N is excessively placed on the display screen 30 side, that is, the front side, the detection electrode 90 can detect the excessive approach of the object to be heated N. When the control device 23 detects abnormal placement such as the rear edge of the screen 30 or the bottom surface of the display screen 30 being covered, a corrective action such as an alarm or a heating stop command may be executed. it can.

  As shown in FIG. 18, three detection 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 detection electrode 90 includes a detection electrode 90B disposed behind the display screen 30 that is closer to the heating region 8, a detection electrode 90R disposed along the right edge of the display screen 30, and the left edge of the display screen 30. , And a total of three detection electrodes 90L arranged along the line.

  In FIG. 18, 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. 18, reference numeral 91 denotes a position guide key, and a total of 11 keys 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. 18, 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. 18, 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. 19 will be described. Regardless of whether the guide key 91 is touched or not, when the user touches the left first icon 20A in the state shown in FIG. 18, the display screen 30 changes as shown in FIG.
FIG. 19 shows a display screen 30 for setting the thermal power among the 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. 20 will be described. FIG. 20 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.
20, S81 to S92 correspond to the operation steps S1 to S12 in FIG. 9 of the first embodiment. S101 corresponds to step S24A in FIG. Further, S102 is a step corresponding to S21 of FIG.

In FIG. 20, step S86A corresponds to operation step S6A in FIG. S86B does not describe detailed steps, but corresponds to operation step S6B in FIG.
Hereinafter, step S93 and subsequent steps will be described.

  In FIG. 20, S93 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 cooking condition input 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 S94. On the other hand, if the user does not touch the start key (sixth icon 73), the determination in step 93 is repeated (however, for example, after 30 minutes have elapsed, it is automatically reset and returns to step S84).

  20, in step S94, it is determined whether or not the setting of the thermal power value is completed with the second icons 60A to 60K and the user has given a heating operation start command. In step S94, the heating operation start command is determined. Is given, high-frequency power is supplied from the inverter circuit 25 only to the specific heating coil 10 at the placement position of the article N to be heated, and the heating operation is started.

  When the heating stop operation is performed or the set time called timer cooking is exceeded, the inverter circuit 25 is stopped (S98). 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 S99, the user turns off the main power switch 15 or when a certain time (for example, 30 minutes) has passed, but 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 (S100).

The second embodiment has one feature in steps S103 and S104.
That is, in step S94, 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 S94, for example, “You have completed the input of cooking conditions? Press the start key to start cooking. Press the hold key to temporarily hold the cooking condition. If the user touches a hold key (not shown) (14th icon) displayed on the display screen 30 while viewing the confirmation display such as “can be set”, step S94 is “No”. ”And the process proceeds to the hold processing step S103.

  When the hold process is selected in step S94, the cooking condition such as the heating power set by the user is 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 the heating operation is started, the object-to-be-heated object placement determination unit 11 determines the placement position of the object to be heated N1 (step S84), and as a result of comparison with the position before the holding process, the movement of the object to be heated N1 If detected, heating cooking cannot be started as it is, and the process returns to step S85 to execute each step again.

  When the hold process is selected in step S94, it is determined whether or not a new object to be heated N2 has been detected in the stage from step S103 to step S104. For example, when the placement of two or more objects to be heated N1 and N2 is detected at positions distant as shown in FIG. 11 in the step S84, the object to be heated is mounted again in the step 104. The placement determination unit 11 determines the placement positions of the objects to be heated N1 and N2.

  In step 104, the heated object N1 (on the right side) selected with the first icon 20A at the stage of step S91 is excluded from the determination result. As a result, if there is still another object to be heated N2 (also on the right side) at the stage of step S104, the process after step 85 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 hold process is selected in step S103, if another heated object N2 is not detected in the next step S104, the process proceeds to step S104, and after a certain time (for example, 30 minutes) has passed, the next step S99 is performed. The main power switch 15 is automatically turned off when the user turns off the main power switch 15 or when a certain time (for example, 30 minutes) has passed, and the process ends (S100). 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).

Next, FIG. 21 will be described. FIG. 21 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, and clarifies the “correction operation” using the detection electrode 90. . Since the following description will be focused on the configuration different from that of the first embodiment, unless otherwise specified, the portions not described below are the same as those of the first embodiment.
In FIG. 21, S81 to S95 are the same as steps S81 to S95 in FIG.

The “correction operation” using the detection electrode 90, which is one of the characteristic portions of the present invention, is performed in steps S96, S105, and S106.
That is, after the inverter circuit 25 is driven and the induction heating operation is started, the control device 23 separates the above-described three detection electrodes 90B, 90R, and 90L separately from the monitoring operation of the article placement determination unit 11 to be heated. Whether or not the object N to be heated has not approached the display screen 30 is repeatedly checked at short intervals (for example, several seconds) (step S96).

  If the approach of the heated object N is detected by the detection electrode 90B arranged at the rear of the display screen 30 in step S96, the control device 23 corrects the placement position of the heated object N. Recommends the user to move away from the detection electrode 90B, that is, to change the position of the object N to be heated backward, and performs a “correction operation” for limiting the heating operation (S106).

In step S106, specifically, the following “correction operation” is performed.
(1): In the advice information display section 45 (described later) on the display screen 30, the fact that the heated object N is at an inappropriate placement position is displayed with characters (display information 45A).
(2): The voice synthesizer 31 informs by voice that the heated object N is placed at an inappropriate position.
(3): It is checked whether the ambient temperature around the display screen 30 is within a predetermined safe temperature range through the temperature detection circuit 24.
(4): A command signal for temporarily stopping the drive of the inverter circuit 3 is transmitted, and the induction heating being executed is temporarily stopped.

Next, in step S107, specifically, the following “correction operation” is performed.
(1): When the detection electrode 90 (at least the detection electrode 90B) does not detect that the object to be heated has approached, it is estimated that the position where the object to be heated N is placed has been changed, and the step A command signal for releasing the temporary stop of the induction heating in S106 is issued, the induction heating is restarted, and the process proceeds to the determination processing step of step S96 (returns).
(2): In step S106, the position where the heated object N is placed is changed within one minute from the time when the heated image N is displayed at the inappropriate placement position on the display screen 30. If it cannot be estimated that the heated object N has not been corrected, the process proceeds to step S98.
(3): The detection of the approaching state of the object to be heated by the detection electrode 90 is not lost within one minute from the time when the object S is notified that the object N is placed at an inappropriate position by the speech synthesizer 31. In this case, since it cannot be estimated that the position where the heated object N is placed has been changed, the process proceeds to step S98 assuming that the position of the heated object N has not been corrected.

  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.

  In addition, as described in steps S95, S106, and S107, when the approach of the heated object N is detected by the detection electrode 90B arranged at the rear of the display screen 30, the placement position of the heated object N is set. In order to correct, the control device 23 recommends the user to move away from the detection electrode 90B, that is, to change the position of the object N to be heated backward, and to temporarily stop the heating operation. Therefore, the user can be alerted about the position of the object N to be heated, and induction heating can be urgently stopped to prevent the display screen 30 from being overheated.

Embodiment 3 FIG.
22 to 23 show an (built-in) induction heating cooker according to Embodiment 3 of the present invention. FIG. 22 is a plan view of the induction heating cooker. FIG. 23 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. 22, 5 is an input operation unit provided in the main body 1, and 10 is a heating coil. In FIG. 22, 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.

  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, and a light source such as a light emitting diode that introduces light into the light guide 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. Note that the light source 101 may be provided with a plurality of light-emitting diodes for a plurality of colors in order to radiate a plurality of colors to the light guide body 100 as well as monochromatic light such as red and yellow.

  In FIG. 22, 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. 21, 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 notify the user so as to maintain an interval of about the diameter (10 cm) of at least one heating coil 10.

  Specifically, as shown in FIG. 22, after the first object to be heated N1 is placed on the top plate 3, a large first object N1 is placed next to the right of the first object to be heated 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 shown by the thin chain line in FIG. 22 is moved to the right by one heating coil 10 (only the dimension close to the gap dimension W in FIG. 22) and shown by the thick chain line. It is set as the position of the second heated object N2.

  In FIG. 22, reference numeral 90X denotes a detection electrode similar to the detection electrode 90 in the first embodiment. However, in the third embodiment, the detection electrode 90X is installed so as to cross the top plate 3 to the left and right at the rear position of the display screen 30, and surrounds the entire heating area (heating area) 8. It is formed in a series. For example, the heating area 8 is surrounded at a position about several mm to 10 mm outside the heating area (heating area) 8. Further, the detection electrode 90X is installed for the purpose of detecting that the user has touched and for detecting that the heated object N has approached, in the same manner as the detection electrode 90 of the second embodiment.

  The detection electrode 90X can detect that the user has touched from the change in capacitance, and can detect that the heated object N has approached. If these two states are detected, the control device 23 The display screen 30 and the voice guide device 31 are configured to perform a predetermined corrective action such as issuing an alarm. For this reason, when the user's fingertip FG mistakenly enters the direction of the heating area 8 beyond the detection electrode 90X, an immediate warning is issued to the user. Further, when the bottom surface of one heated object N is placed so as to jump out of the heating area 8, the upper part of the detection electrode 90X is covered like the third heated object N3 in FIG. Therefore, even in this case, an alarm is issued by the display device 30 and the voice guide device 31 by the control device 23.

  Next, FIG. 23 will be described. In FIG. 23, S111 to S118 are operation steps based on a control program of a microcomputer constituting the core of the control device 23, and are parts related to position detection of the object to be heated N and position correction recommendation.

Hereinafter, description will be made in order from the start S111. When the operation button 15A of the main power switch 15 is pressed, the main power switch 15 is closed (S112).
When the control device 23 detects that the main power switch 15 is closed in step S112, 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 (S113).

  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. Thus, the heated object placement determining unit 11 detects the presence of the second heated object N2 (S113). 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 object to be heated N2 is detected, the process proceeds to step S114, and the number of objects to be heated N is confirmed again. If the total number of objects N to be heated is two or less, the process proceeds to step 115. If the number is three or four, the process proceeds to the error display process S120, and the voice guidance device 31 notifies that three or more objects N to be heated cannot be used at the same time.

  Next, in step S115, 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 S116, 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 each placed on two adjacent heating coils, the space | interval of both is estimated to be less than predetermined value. (S117).
If it is determined that the distance between the two objects to be heated N1 and N2 is narrow, in step S118, the heating object 10 below the first object N1 and the second object N2 is not adjacent to each other. 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) (S118). .

Here, in order to reliably guide the user to move one heating coil, the heating area is shifted to the adjacent direction by the diameter of one heating coil 10 by the light of the light guide described above. Make 8 light up. Then, the position of the second object to be heated N2 indicated by the thin chain line in FIG. 21 is moved to the right by the diameter of one heating coil 10, and the position of the second object to be heated N2 indicated by the thick chain line. And 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. When the user repositions the second object to be heated N2, the steps after step S113 are performed again at the new position.
When it is determined in step 117 that the interval is not less than the predetermined interval, the process shifts 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 S116 and S117 of FIG. 23 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 its upper surface that forms a heating area 8 having a predetermined plane area on which the first heated object N1 and the second heated object N2 can be placed simultaneously;
A plurality of heating coils 10 regularly arranged so as to be adjacent to each other inside the main body 1,
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A heated object placement determination unit 11 for determining whether the first or second heated object N1 or N2 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;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25, and the voice guide device 31, and
The input operation unit 5 is configured to integrate and set cooking conditions for all the objects to be heated N placed on the top plate 3;
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 display screen 30 on the basis of the result that the heated object placement determining unit 11 determines that the heated object N is placed on the heating coil 10. The number of first icons 20 corresponding to the number of the objects to be heated N is displayed in the area 40,
The control device 23 determines that the first icon 20A corresponding to the first object to be heated N1 has been selected by an operation in which a user touches a predetermined position on the top plate 3, and thereafter It operates so that the cooking conditions for the first heated object N1 can be input,
The display screen 30 of the input operation unit 5 is disposed below the top plate 3,
A detection electrode 90X provided across the display area 30 and the heating coil 10 and surrounding the heating area 8,
The detection electrode detects that the first or second object to be heated N1, N2 has approached the display screen 30;
The control device 23 performs a predetermined corrective action when the detection electrode 90 detects that the first or second object to be heated N1 or N2 has approached abnormally. .

For this reason, according to this induction heating cooker CH, the effect similar to the effect in Embodiment 1 can be expected, and the object N to be heated has jumped out of the heating area 8 abnormally by the detection electrode 90X. It also detects the loading status and prevents induction heating in such inappropriate loading status, so it can also prevent problems such as burning of other kitchen furniture in which induction heating cookers are installed. Can be expected to increase.
Further, in a plan view, the display screen 30 on the front side of the heating area 8 is very close, or the display screen 30 is placed on the upper side of the display screen. Since the mounting state in which the object to be heated N has jumped out abnormally is also detected and induction heating in such an inappropriate mounting state is prevented, the display screen 30 can be burned out by heat from the object to be heated N. Failures can also be prevented.

Moreover, the induction heating cooker of this Embodiment 3 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 cooker CH, when a plurality of heated objects N are abnormally approached and placed on the top plate 3, the position of the single heated object N is reviewed. In this case, the sound guide device 31 is notified to reposition (so as to correct the position), and the heating area is illuminated by the light of the light guide 100 so as to be in an appropriate position, so that the advantages of the multi-coil method are not impaired. Induction heating can be used.

Embodiment 4 FIG.
24 to 26 show an induction heating cooker (built-in type) according to Embodiment 4 of the present invention. FIG. 24 is a plan view of the induction heating cooker. FIG. 25 is a flowchart showing the control operation of the control device for the induction heating cooker of FIG. FIG. 26 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. 24 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, during heating cooking with a heating power value of 2000 W, when receiving a reduction command signal so that the upper limit value of the heating power is 1500 W or less, the power of the heating source is controlled and forced (automatic) even if the user does not operate The operation is reduced. 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 consumption. Induction heating cookers that can reduce power consumption have been proposed.

  By the way, what was shown by the said prior art literature (Japan patent publication 2014-120430 gazette and Japan patent publication 2011-55622 gazette) has arrange | positioned one or more heating ports on the top plate. It is based on the premise of a type induction heating cooker, and is not intended for a multi-coil system.

  This will be specifically described below. In FIG. 24, the induction heating cooker CH includes a top plate 3 on which an object to be heated N (N1, N2,...) Is placed on the upper surface of the main body 1, and a horizontally long input operation unit (in front of the top plate 3). 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 use of the heating area 8 is limited to the first heating area 8P, and the object N to be heated is temporarily placed in the second heating area 8N. Inductive heating is not possible even with

  In FIG. 24, reference numeral 103 denotes a placement position guide mark. The placement position guide mark is displayed in a square frame shape on the surface of the top plate 3 by the light guide 100 and the light source 101 as shown in the third embodiment. 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. When it is set to the energy saving mode and when the induction heating cooker CH receives a power consumption reduction command signal and restricts a part of the heating area 8, only the first heating area 8P appears. The placement position guide mark 103 is displayed only for the first heating area 8P.

In FIG. 24, a detection electrode 90 similar to the detection electrode 90 in the first embodiment is composed of four detection electrodes as follows.
That is, 90B is a detection electrode installed so as to cross the top plate 3 to the left and right at the rear position of the display screen 30. The length of the detection electrode 90B in the left-right direction has a length comparable to the lateral width of the first heating area 8P.

  90RS is a detection electrode installed at a position about several mm to 10 mm away from the right end of each of the first heating area 8P and the second heating area 8N. The first heating area and the second heating area A length corresponding to the entire right end of the area 8N is formed.

  90LS is a detection electrode installed at a position about several mm to 10 mm away from the left end of each of the first heating area 8P and the second heating area 8N, and the first heating area and the second heating area 8N. A length corresponding to the entire left end of the area 8N is formed.

  The four detection electrodes 90B, 90RS, 90LS, and 90Y described above can detect that the user has touched from the change in capacitance, and can detect that the heated object N has approached, and these two states are detected. If it is, the control device 23 performs a predetermined corrective action. For example, the display screen 30 and the voice guide device 31 are configured to issue an alarm.

  Next, FIG. 25 will be described. In FIG. 25, S121 to S129 are the respective operation steps based on the control program of the microcomputer constituting the core of the control device 23, and the use of a part of the heating area 8 of the object N to be heated is restricted and the restriction thereof. This is a part related to the operation of notifying the result.

  Hereinafter, description will be made in order from the start S121. When 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 (S122), and starts the total power reduction corresponding process. It is determined whether or not induction heating cooking is performed in the heating area 8N (S123). 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 S124.

  In step S124, 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 (S125).

  In step S125, the control device 23 narrows the range of the placement position guide mark 103 displayed in a frame shape so as to surround 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 S123, if it is determined that induction cooking is performed in the second heating area 8N, the process proceeds to step 76, and the total power reduction setting process is performed as an external response (power command). 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 S127, the control device 23 checks whether or not the induction heating operation has ended, and if it has ended, proceeds to step S128. In step S128, the heating area 8 (8N, 8P) is limited to only the first heating area 8P, as in step S124.

  Even after step S128, in step 125, the display screen 30 displays that the energy saving mode has been 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 (S129).

  Next, FIG. 26 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. FIG. 26 shows changes in the display screen 30 before and after the energy saving mode is set.

In FIG. 26, 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. 26A, 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 corresponding to this restriction, as is apparent from FIG. 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 display screen 30). Safety measures are taken so that they can be released for the first time.

  Further, by the detection electrodes 90B, 90RS, 90LS, a mounting state in which the heated object N has abnormally jumped out to the front side, the right side, and the left side of the heating area 8 is detected, and such inappropriate mounting is performed. Since induction heating in the state is prevented, problems such as burnout of other kitchen furniture in which the induction heating cooker is installed can be prevented in advance, and it can be expected to improve safety. Note that the detection electrode 90 is not installed between the first heating area 8P and the second heating area 8N, but this is behind the first heating area 8P. This is because even if the object to be heated N jumps out slightly to the second heating area 8N, it is impossible to assume that the surrounding kitchen furniture will be burned out, and there is also a merit that the manufacturing cost can be reduced by not installing it. is there.

  Of the four detection electrodes 90B, 90RS, 90LS, and 90Y described above, the detection electrode 90Y at the rear position of the heating area 8 may stop the detection operation during induction heating only in the first heating area 8P. good. This is because there is a second heating area 8N behind the first heating area 8P, and even if the heated object N slightly jumps out to the second heating area 8N, the surrounding kitchen furniture is burned out. This is because the situation cannot be assumed.

As apparent from the above description, the induction heating cooker CH of the fourth embodiment is
A main body 1 having a top plate 3 on its upper surface that forms a heating area 8 having a predetermined plane area on which the first heated object N1 and the second heated object N2 can be placed simultaneously;
A plurality of heating coils 10 regularly arranged so as to be adjacent to each other inside the main body 1,
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A heated object placement determination unit 11 for determining whether the first or second heated object N1 or N2 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;
A control device 23 for controlling the input operation unit 5, the inverter circuit 25, and the voice guide device 31, and
The input operation unit 5 is configured to integrate and set cooking conditions for all the objects to be heated N placed on the top plate 3;
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 display screen 30 on the basis of the result that the heated object placement determining unit 11 determines that the heated object N is placed on the heating coil 10. The number of first icons 20 corresponding to the number of the objects to be heated N is displayed in the area 40,
The control device 23 determines that the first icon 20A corresponding to the first object to be heated N1 has been selected by an operation in which a user touches a predetermined position on the top plate 3, and thereafter It operates so that the cooking conditions for the first heated object N1 can be input,
The display screen 30 of the input operation unit 5 is disposed below the top plate 3,
One detection electrode 90B is provided between the display screen 30 and the heating coil 10, and detection electrodes 90RS and 90LS are provided to surround the left and right sides of the heating area 8, respectively.
The detection electrode 90B detects that the first or second object to be heated N1, N2 has approached the display screen 30;
The control device 23 performs a predetermined corrective action when the detection electrode 90B detects that the first or second object to be heated N1 or N2 has approached abnormally. .

  For this reason, according to this induction heating cooker CH, the effect similar to the effect in Embodiment 1 can be expected, and the object to be heated N jumps out to the near side of the heating area 8 by the detection electrode 90B. A mounting state that is abnormally close to the display screen 30 is also detected, and induction heating in such an inappropriate mounting state is prevented, so that problems such as burnout and failure of the display screen 30 can be prevented. Further, the detection electrodes 90RS, 90LS, 90Y provided on the left and right and the rear of the heating area 8 can prevent problems such as burning of other kitchen furniture in which the induction heating cooker CH is installed, thereby improving safety. I can expect.

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 controller 23 divides the heating area for heating the object N into a first heating area and a second heating area, so that the heating coil is divided into the first heating area 8P and the second heating area. Control energization in groups corresponding to area 8N,
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 8P, and the second heating area. Heating cooking power is not supplied to the heating coil corresponding to 8N.

Therefore, according to the induction heating cooker of the fourth embodiment, as in the first embodiment, the user can easily select the first icon 20 on the display screen 30 and 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 area that can be used in the energy saving mode (outside) The boundary line may be illuminated by the light source 101. 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 space above the top plate 3 can be effectively utilized.

Embodiment 5. FIG.
FIG. 27 is a plan view showing the entire (built-in) induction heating cooker according to the fifth embodiment of the present invention. Actually, the heating coil 10, the light guide 100, the light source 101, and the like that cannot be seen from above the top plate 3 are shown. 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. 27 provides a restriction on the installation position of the object to be heated N, and even when there is a bottom surface of the object to be heated N directly above the heating coil 10, a portion close to the outer periphery of the heating area Then, by preventing induction heating under certain conditions, such as abnormal overheating of the top surface portion 2 of the induction heating cooker CH, abnormal overheating of kitchen furniture such as a sink incorporating the induction heating cooker CH, and deformation due thereto, etc. The feature is to prevent problems.

In the fifth embodiment, “induction heating in a portion near the outer peripheral edge of the heating area 8” prohibiting induction heating is a placement position such as the four heated objects N1 to N5 shown in FIG. It is use in. In such heating, a part of the object to be heated N straddles a range outside the heating coil 10 (indicated by reference sign SS in FIG. 27).
That is, the following five cases are defined in the control program of the control device 23 as improper placement positions.
(1): A mounting state in which the upper end of only one or two heating coils adjacent to each other in the front-rear direction is covered at the left end of the heating area 8 like the (first) object to be heated N1.
(2): Like the (second) article to be heated N2, the front side (front) end of the heating area 8 covers the upper side of only one or two heating coils adjacent in the left-right direction. Placed state.
(3): A mounting state in which the upper end of only one or two heating coils adjacent to each other in the front-rear direction is covered at the right end of the heating area 8 like the (third) article to be heated N3.
(4): Like (fourth) object to be heated N4, a mounting state that covers the upper side of only one or two heating coils adjacent in the left-right direction at the rear end of the heating area 8 .
(5): A mounting state that covers the top of only one heating coil at the front, side, or rear end of the heating area 8, like the (fifth) article to be heated N5. In particular, there are many cases such as non-circular pans and iron plates with a small bottom area.

  The five inappropriate placement states are determined by the heated object placement determination unit 11 determining the placement state of the heated object N before the start of induction heating, and the position of the corresponding heating coil 10 or the like. Since the number and the like are identified and the resulting signal is transmitted to the control device 23, the control device 23 determines that the placement is inappropriate.

  As shown in FIG. 27, in the mounted state of the objects to be heated N1 to N5, there is a concern that a part of the bottom surface of the objects to be heated N1 to N5 exceeds the range of the top plate 3 and extends to the outside. Therefore, if induction heating is started, there is a risk of abnormal overheating of the peripheral portion of the top surface portion 2, abnormal overheating of kitchen furniture such as a sink installed with the induction heating cooker CH, deformation thereof, and the like.

Therefore, when the control device 23 determines that the heated objects N1 to N5 shown in FIG. 27 are placed, the control device 23 performs the following operation.
(1): The first icon 20 is not displayed on the display screen 30 (therefore, since the user cannot select the first icon 20 and specify the object to be heated, the subsequent operation input is not performed. Can't)
(2): The advice information display unit 45 of the display screen 30 displays characters (display information 45A) indicating an inappropriate placement state.
(3): The voice synthesizer 31 notifies the user of the improper placement state by voice.
Then, if the user understands these notification contents and repositions the object N to be heated at an appropriate position, the first icon 20 is displayed on the display screen 30 and a predetermined operation input is also possible. Heat cooking can be started.

  In addition, the case where the shape of the bottom part of the to-be-heated material N is a rectangle or an ellipse, and the magnitude | size of the bottom face is the magnitude | size and shape which covers the upper direction of only two adjacent heating coils 10 is assumed. However, in the case of such a small object to be heated N6, as shown in the object to be heated N7 in FIG. 27, it is necessary to place it so as to cover the upper side of only two heating coils 10 adjacent in the front-rear direction. Induction heating cooking becomes possible.

  In the fifth embodiment, the detection electrode 90 is only provided at a fixed length at the rear position of the display screen 30. In the fifth embodiment, when it is determined by the control device 23 that the objects to be heated are placed like the heated objects N1 to N5 shown in FIG. Since induction heating in a portion close to the periphery is prohibited, it is not necessary to install a detection electrode on the right side or the left side of the heating area 8 as shown in the first to fourth embodiments. Further, if only the access to the display screen 30 is prevented, it is sufficient to provide the detection electrode 90B between the display screen 30 and the heating coil 10, as shown in FIG. 27, and the manufacturing cost can be reduced. .

  For this reason, according to this induction heating cooker CH, the effect similar to the effect in Embodiment 1 can be expected, and the object to be heated N jumps out to the near side of the heating area 8 by the detection electrode 90B. A mounting state that is abnormally close to the display screen 30 is also detected, and induction heating in such an inappropriate mounting state is prevented, so that problems such as burnout and failure of the display screen 30 can be prevented.

  In addition, as illustrated in FIG. 27, the five inappropriate placement states such as the heated objects N1 to N5 are inappropriate in the control device 23 based on information from the heated object placement determination unit 11. Although the detection electrode 90B is determined separately from the operation of the heated object mounting determination unit 11, the heated object N in the direction approaching the display screen 30 is determined. This position is monitored by the presence of the detection electrode 90B, and a more reliable safe operation can be expected.

In addition, the induction heating cooker according to the fifth embodiment shown in FIG.
A main body 1 having a top plate 3 on the upper surface on which the objects N1 to N6 are placed;
A plurality of heating coils 10 regularly arranged so as to be adjacent to each other inside the main 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 control device 23 for controlling the input operation unit 5, the inverter circuit 25, and the voice guide device 31, and
The input operation unit 5 is configured to unify and set cooking conditions for all the objects to be heated placed on the top plate 3;
The input operation unit 5 has a display screen 30 on which a plurality of types of icons for touch input are displayed.
In the display area 40 of the display screen 30, the control device 23 determines that the heated object placement determination unit 11 determines that the heated object is placed on the heating coil. Display the number of icons corresponding to the object to be heated,
The control device 23 can input the cooking condition of the first heated object by detecting that the user touches the first icon 20 corresponding to the first heated object N1. Works like
Furthermore, in order to prevent overheating from extending from the outermost peripheral edge of the heating area 8 of the top plate 3 to the outside thereof, the control device is close to the outer edge (for example, the left edge) of the heating area and along the outer edge ( For example, in order to prohibit induction heating in a stacked state (inappropriate mounting state) that covers only two heating coils 10 adjacent to each other in the front-rear direction) or only one heating coil 10, Based on the information of the object placement determination unit 11, an inappropriate placement state is determined, and when the object is in such an inappropriate placement state, the inverter circuit 25 is not driven. is there.

  For this reason, according to the induction heating cooker according to the fifth embodiment, in the multi-coil system, the induction heating in the periphery of the heating area is prevented, and the induction heating cooker and the surrounding kitchen furniture are burned out, overheated or deformed. Accidents can be prevented. In general, since the operation buttons 15A of the input operation unit 5 and the main power switch 15 are provided in the front portion of the top plate 3, induction heating in the vicinity of the input operation unit 5 and the operation buttons 15A is prevented. In addition, it is possible to prevent abnormal heating of various electronic components provided in the input operation unit 5, electronic component elements for liquid crystal display screens, substrates, operation buttons 15A, etc., and it is an induction heating cooker of either built-in type or stationary type. Can also increase its safety.

  The detection electrode 90B shown in FIG. 27 is installed so as to extend to a position behind the operation button 15A of the main power switch 15, and is interposed between the heating coil 10 and the operation button 15A in plan view. Although there is this, it is for detecting that the to-be-heated material N does not approach to the vicinity of the operation button 15A.

Embodiment 6 FIG.
28 to 30 show an induction heating cooker (built-in type) according to Embodiment 6 of the present invention. FIG. 28 is a plan view 1 of the induction heating cooker. FIG. 29 is a plan view 2 of the induction heating cooker. FIG. 30 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 the sixth embodiment, there is a “spillover detection function” that automatically detects hot water, cooking liquid, etc. (hereinafter referred to as “cooked object”) overflowing from the heated object N such as a pan. One of the features.
That is, in order to detect that the object to be cooked is blown from the heated object N, the blown detection electrodes 104, 105, 106, and 107 are arranged on the lower surface of the top plate 3 corresponding to the heating area 8. Yes. In addition, when the electrode for detecting a blow-off is arranged on the lower surface of the top plate and the object to be cooked is blown down on the top plate 3, the change in the capacitance of the electrode is detected and induction heating cooking is stopped. Since things are already known, for example, from Japanese Patent Publications (Japanese Patent Application Laid-Open Nos. 2010-182659 and 2010-1826262), the explanation of the principle of the spill detection is omitted.

  A spillage detection unit (not shown) can detect spillage for each of the four detection electrodes 104 to 107 described above. When the liquid of the cooking object spilled from the object to be heated N1 reaches, for example, the position directly above the detection electrode 104 on the right rear, the capacitance of the electrode changes. Sends to the control device 23 a discrimination signal indicating that there has been a spill.

  Further, when a change in capacitance is detected by the spillage detection unit, the light guide 100 located at a position close to the outer periphery of the detection electrode 104 that detects the spillage while stopping driving or reducing the output of the inverter circuit 25. Receives light emitted from the light source 101 (see FIG. 21 of the third embodiment) and emits light to the top plate 3 side. Note that the control device 23 may cause the light source 101 to blink instead of continuously lighting when a spill is detected.

  Behind the display screen 30 of the input operation unit 5 is disposed below the top plate 3, and one detection electrode 90 </ b> B is provided between the display screen 30 and the heating coil 10. The detection electrode 90B is an electrode of a type that detects from the change in capacitance that an object to be heated has approached the display screen 30.

  FIG. 29 shows a case where the loop-shaped detection electrode 106 in the left front (near side) portion in the heating area 8 has detected a spill. In this case, as shown in FIG. 29, the light guide 100 receives light emitted from the light source 101 and draws a light frame 108 on the top plate 3. It should be noted that the light frame 108 is visible to the user as a blinking light band or line by blinking the light source 101. Note that the light frame 108 is displayed not only when a spill occurs, but also at the start of induction heating cooking (immediately before the start), as will be described later. This will be described with reference to FIG. In addition, in order to make the range of the mounting position guide mark 103 shown in FIG. 24 of Embodiment 4 and the position of the four light frames 108 the same, the light guide 100 and the light source 101 are mounted on the mounting position guide. The mark 103 and the light frame 108 are shared.

  In the sixth embodiment, the following blow-off detection operation and heating control operation are performed as an emergency suppression measure for such blow-out. When the spilling is detected, the driving of the heating coil 10 in the range surrounded by the detection electrodes 104 to 107 that detected the spilling is stopped or the heating power is reduced to the minimum. That is, the control device 23 issues a command to cut off or limit the high-frequency power from the inverter circuit for the heating coil 10 as such a target.

  As an example of lowering the thermal power, as described above, when the thermal power is set to an arbitrary stage among eleven stages (see FIG. 8) by the user, the stage is lowered by three stages. Alternatively, the firepower value is set to 25%. For example, if it is used at 2000W, it is set to 500W. Alternatively, if the set thermal power at the time of occurrence of spillage is 500 W or more, the overall thermal power value for one heated object N is always reduced to 300 W regardless of the total number of heating coils 10 that are heated at that time. You may be allowed to.

  In addition, when the rated minimum heating power of one heating coil 10 is 100 W, and a spill occurs in a scene in which one heating object N is cooked by four adjacent heating coils 10, the control device 23 is up to 300 W. When a command to lower the heating power is issued, the individual heating coils 10 cannot be controlled to have a rated minimum heating power such as 75 W. Therefore, in such a case, one of the four heating coils 10 may be stopped and the remaining three may be controlled to have a heating power of 100 W each.

  Next, FIG. 30 will be described. In FIG. 30, steps S130 to S143 are each operation step based on the control program of the microcomputer constituting the core of the control device 23, and the object N to be heated is moved to another place during cooking. This is an example. This is an operation relating to a part related to the operation of notifying the heating area 8 after the movement of the article N to be heated and also notifying the spillage detection range.

Hereinafter, it demonstrates in order from the step (S130) in which the cooking operation was started. The first step 130 is the same as step S14 in the flowchart of FIG.
If the heated object N is changed to another place (however, in the heating area 8) while the induction heating cooking operation is being performed on one heated object N, the heated area at the time of the start of cooking is covered. The absence of the heated object N is detected by the control device 23 based on a signal from the heated object placement determination unit 11 (S131).

  The control device 23 urgently stops the driving of the inverter circuit 25 and switches to a special heating mode (movement mode) with temporary movement (S132) (same as step S53 in FIG. 11).

  The spillage detection unit (not shown) supplies a weak current (high frequency) for spillage detection to one detection electrode 106 from the stage of step 130, but after this step S132 is passed, it is stopped instantaneously (S133). ).

  As soon as the presence of the heated object N1 is detected at a new position, the material detection (judgment) means 36 of the heated object N is activated, and the material of the heated object N, the area and shape of the bottom surface, etc. Then, the control device 23 makes a determination based on the signal from the heated object placement determination unit 11 (S134).

  And when it determines with the material and magnitude | size of the to-be-heated material N1 matching with the material and magnitude | size of the to-be-heated material N1 used by heating cooking operation until just before this, It is determined that N is placed again, and a first icon 20 for selecting the heated object N on the display screen 30 appears on the display screen 30. In addition, in order to determine whether it is the to-be-heated object N in the middle of heating cooking, when the mounting of the to-be-heated object N is detected in a new position, you may measure the temperature of the bottom face. Specifically, the temperature detection circuit 24 may measure the amount of infrared rays from the bottom surface of the object N to be heated with a non-contact type sensor (infrared sensor) and use the result of estimating the bottom surface temperature from the result. .

  As a result of the processing as described above, the material and size of the object to be heated N, and the placement position of the object to be heated N have been determined, so that the placement position of the object to be heated N is any one of the four detection electrodes 104 to 107. To be in one of them. That is, in this way, in response to the position of the object to be heated N that is the target part for detecting the spill, the detection area for the spill is also changed to a new placement position of the object to be heated N (S135).

  Then, the process proceeds to the next step S136, and the control device 23 drives the light source 101 and uses the light from the light guide 100 so that the user can clearly and visually check the spillover detection area. Is displayed. That is, as shown in FIG. 29, since the light guide 100 receives light emitted from the light source 101 and draws the light frame 108 on the top plate 3, the spillage may be automatically detected in the range of the light frame. You can understand and give the user a sense of security.

  Next, on the display screen 30, characters that recommend the designation of the heated object N by touching the first icon 20 </ b> A are shown. Informed. When the first icon 20A is selected by the user, the user performs an operation of selecting whether or not to continue the cooking condition that has been performed until immediately before, and the user issues a command to resume cooking. , The blowout detection unit (not shown) starts applying a weak current (high frequency) for detection of blowout that has been stopped in the step 133 (S137). In this case, for example, when the new placement position of the object to be heated N is in a range surrounded by the detection electrodes 104 shown in FIG. 28 in plan view, only one detection electrode 104 is used for detection. A current is applied. However, in the case where the mounting position extends over two ranges individually surrounded by the two detection electrodes 104 as in the second object to be heated N2 shown in FIG. A detection current is applied to the electrode 104.

  When induction heating cooking is started and the liquid in the heated object N boils and it is detected by at least any one of the detection electrodes 104 to 107 that the liquid has been blown, the process proceeds from step S138 to step 139. .

  When induction heating cooking is started and the liquid in the object to be heated N boils and it is detected that at least one of the detection electrodes 104 to 107 has spilled, the steps of steps 139 to S141 are performed. The spill countermeasure process shown is executed.

  For example, in the case where the object to be heated N is only in the heating area surrounded by the one detection electrode 104, the detection electrode can be used regardless of the direction in which the spilled liquid flows in the front, back, left or right of the object to be heated N. Detected at 104. In order to notify the user that a spill has occurred in the heating area corresponding to the detection electrode 104, the light guide 100 located near the outer periphery of the detection electrode 104 that detected the spill is emitted from the light source 101 (flashing operation). ) And emits light toward the top plate 3 (S139). For example, the red light from the light source 101 illuminates the surrounding area where the object to be heated N is placed, and the range in which the spill is detected becomes clear to the user by the light frame 108. Can give the user a sense of security.

Next, the display screen 30 displays that the spillage is detected by the spillage detection unit. At the same time, the voice guide device 31 notifies the occurrence of spillage by voice (S140). Further, the control device 23 controls the inverter circuit 25 to stop the induction heating cooking or to instantaneously perform an operation for forcibly lowering the thermal power value being executed (S141).
Then, the user is asked to determine whether or not to resume the cooking operation within a predetermined time (S142). If the cooking is to be stopped, the cooking ends when a predetermined end operation is performed (S143). However, if the start operation of cooking is performed again with the input operation unit 5 without issuing the stop command, the process returns to step S137 and the induction heating is resumed. In the case of timer cooking, when the set time has elapsed, the routine proceeds from step 142 to step 143 and ends. Further, the determination of the presence or absence of spilling in step S138 is repeatedly performed at intervals of several seconds at the longest during induction heating cooking.

  As described above, according to the induction heating cooker CH according to the sixth embodiment shown in FIGS. 28 to 30, the same effect as the effect in the first embodiment can be expected, and the detection electrode 90 </ b> B Since the heated state N is detected abnormally popping out to the near side of the heating area 8 and abnormally approaching the display screen 30, the induction heating in such an inappropriate mounting state is prevented. Problems such as burnout and breakdown of the display screen 30 can be prevented.

Furthermore, the induction heating cooker CH according to Embodiment 6 shown in FIGS.
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 regularly arranged so as to be adjacent to each other inside the main 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 spill detector including a detection electrode 104 for detecting a spill on the top plate 3;
A controller 23 for controlling the input operation unit 5, the inverter circuit 25, the spill detector and the voice guide device 31;
The input operation unit 5 is configured to unify and set cooking conditions for all the objects to be heated placed on the top plate 3;
The input operation unit 5 has a display screen 30 on which a plurality of types of icons for touch input are displayed.
In the display area 40 of the display screen 30, the control device 23 determines that the heated object placement determination unit 11 determines that the heated object is placed on the heating coil. Display the number of icons corresponding to the object to be heated,
The control device 23 can input the cooking condition of the first heated object by detecting that the user touches the first icon 20 corresponding to the first heated object N1. Works like
Further, when the blowout detection unit detects a blowout, the specific heating area 8 of the top plate 3 having the detection electrodes 104 to 107 that has detected the blowout is visually recognized as a blowout detection area from below the top plate 3. This is a configuration having a light source 101 to illuminate.
In addition, when the object N to be heated is moved to another position in the heating area 8 of the top plate 3 during induction heating cooking, the blowout detection with the detection electrodes 104 to 107 corresponding to the new position is detected. The area can be confirmed again by the light source 101.

For this reason, according to the induction heating cooker which concerns on Embodiment 6, in a multi-coil system, the spill from the to-be-heated material N can be detected automatically, a heating cooking operation can be stopped or suppressed, and a user's relief is provided. Can be increased.
In addition, when the movement of the object to be heated N is detected during cooking of the object to be heated N, the detection area of the blowout is displayed again by the light source 101 at the position after the movement. But it can increase the user's sense of security.

  In addition, when the to-be-heated material N is moved during cooking, the icon 56 as shown in FIG. 15 and FIG. 16 is applied in order to apply the conventional cooking conditions (thermal power etc.) to cooking after movement. , 57 can be displayed on the display screen 30 and can be selected, the temporarily interrupted cooking can be smoothly resumed as described in the second embodiment. Operability can be improved.

Embodiment 7 FIG.
FIG. 31 is a plan view showing an induction heating cooker (built-in type) according to Embodiment 7 of the present invention. In addition, the same code | symbol as Embodiment 1 or an equivalent part is attached | subjected, and the overlapping description is abbreviate | omitted.

  In the seventh embodiment, as described in the first embodiment, the two left and right induction heating coils 10R and 10L are not used as non-contact power supplies for the thermal cooking utensils, but are used for rotating cooking utensils ("blender" or One of the features is that a dedicated drive coil is used as a drive source of a “mixer”. Therefore, in the following description, these two induction heating coils 10R and 10L are referred to as “feeding side coils”.

  The positions where the power supply side coils 10 </ b> R and 10 </ b> L are installed are below the top plate 3 corresponding to the positions deviated forward from the foremost end of the heating area 8. This is because the rotary cooker (not shown) installed immediately above the power supply side coils 10R, 10L (via the top plate 3) is to be heated with a heated object N such as a pan as shown in the first embodiment. In contrast, it is not heated above a high temperature (eg, 200 ° C.) and can be moved directly by the user with its rotating cooking utensil (not shown). Yes. After the end of the rotary cooking, the temperature of the top plate 3 immediately above the position where the power supply side coils 10R, 10L are installed is equal to or lower than a predetermined temperature (for example, 50 ° C.) so that it is safe for the user to touch. . For example, in order to ensure that the upper limit temperature is maintained, the surroundings of the power supply side coils 10R and 10L are particularly cooled by an air flow, and the temperature of the top plate 3 at a position immediately above where the coils are installed is lowered. A cooling fan may be provided exclusively in the main body housing 1A.

  The sensor 12C installed in the cavity formed in the center of the feeding side coils 10R and 10L formed in an annular shape detects the temperature of the heated object N such as a pan as shown in the first embodiment. For example, a magnetic sensor may be used as long as it can detect that a rotary cooker (not shown) has approached a predetermined position. ). Alternatively, an RF tag or an NFC (near field communication) wireless tag (NFC tag) is embedded in one of the sensor 12C and the rotary cooker, and the relative position of both is determined by wireless communication. good. For example, Japanese Patent Publication No. 2007-134257 discloses a heating coil for induction heating a pan (container) having an IC tag built in a handle portion, and a top plate (top plate) on which the container is placed above the heating coil. Induction heating cookers have been proposed that have an antenna that communicates with an IC tag built in the container and an IC tag built into the container, and is configured by printing the antenna on the lower surface of a top plate (top plate). Induction heating cooking that informs the detection result of such relative position detection means and urges the user's action by means such as voice so that the object to be heated is installed as close to the middle of the communication range as possible. Since the cooker has already been proposed (Japanese Patent Publication No. 2007-80759), these techniques can be applied to the detection of the mounting position of the rotary cooker (not shown).

  The feeding coils 10R and 10L are supplied with a predetermined high frequency power independently from a second inverter circuit (not shown) independent of the heating coil 10. The power supply coils 10R and 10L do not use the heating coil 10, and the specifications of the power supply coils 10R and 10L may be completely different from various specifications such as the diameter of the heating coil 10, the number of coil turns, and the coil diameter. good. In addition, a dedicated rotary cooker (not shown) is prepared in advance, and the feeding coils 10R and 10L are designed so that the rotary cooker can be driven efficiently. For example, even if a general-purpose pot or pot is placed on the power supply coils 10R and 10L, the controller 23 first identifies whether or not it is a regular rotary cooker. Is not contactlessly powered. In addition, when identifying whether it is a regular rotary cooker, for example, when the relative position of both is determined by wireless communication using an RF tag or an NFC tag as described above, one of the identification codes is used. This is possible by making a call and receiving and determining the other.

  A rotating cooking utensil (not shown) in which a stirring blade for blending (not shown) is rotationally driven by the power supply coils 10R and 10L can be used for preparing foods related to induction heating cooking in the heating area 8. It has become.

  In the seventh embodiment, the non-contact power feeding type rotary cooking utensil is driven on the top plate 3 at a position directly above the power feeding coils 10R, 10L. The ingredients or seasonings can be mixed.

  As shown in FIG. 31, in the seventh embodiment, the range of the upper surface operation unit 5 is wider in the left-right direction than in the first embodiment. Reference numeral 109 denotes an operation button of a switch (not shown) for instructing the start of operation of the rotary cooking utensil (not shown). The left and right ends of the upper surface operation unit 5 correspond to the left and right power supply coils 10R and 10L. It is arranged in each part. When the rotary cooker (not shown) presses the operation button 15A of the main power switch 15 to supply power to the control device 23 and then presses the operation button 109, the rotary cooker (not shown) is directly above the feeding coils 10R and 10L. If there is a rotary cooker at the position where it becomes, the power receiving coil (not shown) of the rotary cooker is supplied with electric power in a non-contact state by the feeding coils 10R and 10L on the induction heating cooker CH side, and is rotationally driven. Is done.

  As shown in FIG. 31, in the seventh embodiment, the display screen 30, the operation button 109, and the rotary cooking utensil (not shown) are provided in the non-heated area 110 where the heated object N is not originally placed. 3) is mounted.

  The detection electrode 90 </ b> B is installed in a straight line on the rear side of the display screen 30 and on the installation area of the rotary cooker (not shown), that is, on the rear side of the non-heating area 110. Therefore, there is a detection electrode 90B at a position close to the front edge of the heating area 8, and whether or not the detection object 90B is in a mounting state such that the object N to be heated jumps forward from the heating area 8 side. It is detected by the control device 23.

In the seventh embodiment, it can be detected by the detection electrode 90B that the heated object N approaches from the heating area 8 to the upper side of the display screen 30 or is placed directly above, and the high temperature is generated by itself. Moreover, it can monitor so that the to-be-heated material N may not enter from the heating area 8 side also into the installation area of the said rotary cooking appliance (not shown) which is not a heating cooker heated from the outside. For example, as shown in FIG. 31, when the user places the fifth heated object N5 having a bottom shape other than circular so as to straddle the power supply coils 10R and 10L, the control device 23 immediately issues an alarm (one of the corrective actions of the control device 23) from the voice guide device 31 (also displays a warning character or a graphic on the display screen 30), which is an incorrect placement position for the user. To alert you.
Further, at such a placement position, no drive command signal is output from the control device 23 (one of the correction operations of the control device 23), so induction heating of the heating coil 10 is not started. For this reason, the portion directly above the feeding coils 10R and 10L, which is the non-heating area 110 that does not naturally become high heat, receives heat from the fifth heated object N5 and is overheated to a high temperature. It is possible to prevent and use a non-contact power feeding type rotary cooker on the same top plate 3 with confidence.

According to the induction heating cooker CH of the embodiment 7 of the present invention, it is detected that the heated object N has approached the non-heating area 110 such as the display screen 30, and when it is abnormally approached, induction heating cooking is performed. It is possible to cause the control device 23 to execute an appropriate corrective action such as start-up of the start, stop, or forced reduction of the heating amount.
Further, in such a state where the abnormality is approached, the display screen 30 is alerted not to use the rotating cooking utensil (one of the correction operations of the control device 23).
For this reason, the display screen 30 and the place where the rotary cooking utensil (which is a non-heating appliance) is placed are overheated or deteriorated due to the high heat of the object to be heated, or an accident that causes malfunction or burnout is prevented. And the safety of the user can be improved.

  In addition, in the induction heating cooker CH of the seventh embodiment, the boundary between the heating area 8 and the non-heating area 110 is bound to the upper surface of the top plate 3 by a fixing means such as printing so that the user can clearly recognize the boundary. A line may be displayed, or a similar boundary line may be provided on the lower surface of the top plate 3 so that the boundary line can be identified from the upper surface side.

As described above, the induction heating cooker CH according to the seventh embodiment shown in FIG.
A main body 1 having a top plate 3 on its upper surface, which has a heating area 8 on which an object to be heated N can be placed and a non-heating area 110 on which a non-contact power feeding type cooking utensil can be placed;
A plurality of heating coils 10 regularly arranged so as to be adjacent to each other inside the main body 1,
A heated object placement determining unit 11 for determining whether or not the heated object N is placed directly on the heating coil 10;
Power feeding coils 10R, 10L disposed below the top plate 3 at a position corresponding to the non-heating area 110;
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;
A first inverter circuit 25 for supplying a high-frequency current to the heating coil;
A second inverter circuit for supplying a high-frequency current to the feeding coils 10R and 10L;
A control device 23 for controlling the input operation unit 5, the first and second inverter circuits, and the voice guide device 31, and
The input operation unit 5 is configured to integrate and set cooking conditions for all the objects to be heated N placed on the top plate 3;
The input operation unit 5 includes a display screen 30 on which a plurality of types of icons 20, 60A to 60K, 61, 62 for touch input are displayed.
The control device 23 determines the display screen 30 based on the result that the heated object placement determination unit 11 determines that one heated object N is placed on the heating coil 10. Display one first icon 20 corresponding to the object N to be heated in the display area,
The control device 23 determines that the first icon 20 corresponding to the object to be heated N is selected by an operation in which a user touches a predetermined position on the top plate 3, and then the object to be heated is selected. It operates so that the heating cooking conditions of N can be input,
The display screen 30 of the input operation unit 5 is disposed below the top plate 3,
A detection electrode 90B that detects that the heated object N has approached the display screen 30 and the non-heated area 110;
The control device 23 performs a predetermined correction operation when it is detected by the detection electrode 90B that the heated object N has approached abnormally.

  Therefore, according to the induction heating cooker CH in the seventh embodiment, the same effect as that in the first embodiment can be expected, and the front side of the heating area 8 where the object N to be heated is placed by the detection electrode 90B. The abnormal temperature rise of the mounting area (non-heated area) 110 of the rotary cooking utensils such as the non-contact power feeding blender can be prevented, and the non-power feeding rotary cooking utensil is also the upper surface portion of the induction heating cooker CH. The effect that it can be used safely is expected.

  In the display screen 30 in each of the embodiments described above, it has been described that the user directly touches the surface. However, the display screen 30 is pasted with a transparent film or the like that does not hinder touch-type input. Even if the screen 30 is prevented from being damaged, 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.

  As the display screen 30 described above, a liquid crystal display screen is used, but organic electroluminescence (organic EL display) or other display type display means may be used.

In the embodiment described above, the operation input is performed from one side of the top surface portion 2, that is, the front side, but induction heating used in kitchen furniture also called “island-type kitchen” operated from both the front and rear sides. You may apply to a cooking device.
For example, as an induction heating cooker of such an island type kitchen, FIG. 51 of Japanese Patent Publication No. 2013-206549 and FIG. 19 of Japanese Patent Publication No. 2013-4330 are proposed. When applied to this type of induction heating cooker, the embodiment described above with the input operation unit 5 provided on the opposite side facing the top plate 3 from the opposite side as well as the front side of the cooker. The effect similar to 1-6 can be acquired. In this case, the display screen 30 needs to be installed on both sides opposite to the front side of the top surface part 2, but the configuration and operation method of the display screen 30 on the opposite side to the front side, the input operation unit 5, If the display contents are made common, it can be used in the same way whether it is used from either the front or back side, and there is no confusion in the operation of the user.

  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 induction heating cooker according to the present invention can be widely used not only for home use but also for business use.

CH induction heating cooker ES abnormality detection means FG fingertip IP input operation unit N heated object N1 first heated object N2 second heated object 1 main body 1A main body housing 2 top surface 3 top plate 4 window 5 upper surface Operation unit (input operation unit)
6 Grill part 6A Grill door 8 Heating area (heating area)
8N 2nd heating area 8P 1st heating area 10 (Induction) 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 First intake port 17 Exhaust port 18 Exhaust port 20 First icon 20A First icon 20B First icon 21 Power supply line 22 Power supply circuit 23 Controller 23R Storage device 24 Temperature detection circuit 25 Inverter circuit 26 Liquid crystal display substrate 27 Drive circuit 28 Catalyst heater 29 Catalyst heater drive circuit 30 Display screen 30N Restriction target display area 30P Priority display area 31 Voice synthesizer (voice guide device)
32 Speaker 33 Steam supply device 34 Clock circuit 35 Vibration sensing device 36 Material detection (judgment) means for heated object N 37 Liquid crystal display substrate drive circuit 38 Radiation type electric heater (seeds heater)
39 Touch detection range 40 Display area 41 Display area 42 Display area 45 Advice information display section (guide area)
45A Character information (display information)
46 Image of heating coil 48 Order information 50 Help mode key (fourth icon)
51 reaction area (detection part)
52 reaction area (detection part)
53 Guide mark 55 Character information 56 Condition selection icon 57 Condition selection icon 58 Character information (display information)
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 diagram 74 Stop key (seventh icon)
75 Next screen command key (8th icon)
80 Partition Frame 82 Cooking Menu Display Unit 83 Display Unit 84A to 84H Display Frame 85 Graphic 88 Icon (11th Icon)
89 icon (12th icon)
90 (for detection of approach of heated object) detection electrode 91 position guide key (13th icon)
DESCRIPTION OF SYMBOLS 100 Light guide body 101 Light source 102 Operation button of energy-saving mode setting switch 103 Mounting position guidance mark 104 Detection electrode 105 Detection electrode 106 Detection electrode 107 Detection electrode 108 Light frame 109 Operation button 110 Non-heating area.

Claims (46)

A main body having a top plate on the top surface having a flat area on which the first heated object and the second heated object can be placed simultaneously;
Inside the main body, a plurality of heating coils regularly arranged to be adjacent to each other;
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit that determines whether or not the first or second to-be-heated object 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 controller for controlling the input operation unit, the inverter circuit, and the voice guide device,
The input operation unit is configured to unify and set cooking conditions for all heated objects placed on the top plate,
The input operation unit has a display screen on which a plurality of types of icons for touch input are displayed,
The control device determines whether the heated object placement determining unit determines that the heated object is placed on the heating coil based on a result of the determination in the display area of the display screen. Display the number of first icons corresponding to the number of heated objects,
The control device determines that a first icon corresponding to the first object to be heated is selected by an operation in which a user touches a predetermined position on the top plate, and then the first object is selected. Operates so that the cooking conditions for heated food can be entered,
The display screen of the input operation unit is disposed below the top plate,
A detection electrode for detecting that the first or second object to be heated has approached the display screen;
The induction heating cooker, wherein the control device performs a predetermined corrective action when the detection electrode detects that the first or second object to be heated has abnormally approached.   The corrective action prompts an operation to change the placement position of the first or second object to be heated that is abnormally close to the display screen. 2. The induction heating cooker according to claim 1, wherein information prompting to change is displayed.   In the voice guide device, the corrective operation is performed to change the placement position of the first or second heated object that is abnormally close to the display screen. The induction heating cooker according to claim 1, wherein voice information that prompts the user to change is issued.   The said control apparatus closes the said main power switch, and performs the said correction operation in the step before the start of induction heating operation, and the step after starting the drive of the said inverter circuit, respectively. The induction heating cooker described in 1.   The controller is configured to supply a high-frequency current from an inverter circuit to the heating coil to heat the first object to be heated, and the second object to be heated is placed on the top plate. When it is detected that the object to be heated has moved to another position on the top plate, the cooking operation of the first object to be heated is resumed rather than the cooking condition setting for the second object to be heated. The induction heating cooker according to claim 2 or 3, further comprising a preceding heated object priority mode that prioritizes the heating. 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,
4. The induction heating cooker according to claim 2, wherein after the icon is displayed, information that serves as a reference for touching the first icon by the voice guide device is notified by voice.   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 2 or 3, wherein each of the thermal 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 2 or 3, wherein each time setting key is displayed as a second icon.   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 7 or 8, characterized in that.   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, or 7 characterized by the above-mentioned. 8. The induction heating cooker according to 8.   9. The induction according to claim 7, wherein the control device displays an image diagram showing the number and arrangement of heating coils to be driven when the second icon is displayed on the display screen. 10. Cooking cooker.   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 claim 2 or 3, 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,
4. The induction heating cooker according to claim 2, wherein, in the beginner mode, the voice guide device reports information that is helpful for a user to perform a touch operation on the first icon. 5. The display screen is disposed on the near side as viewed in plan from the front end of the induction heating region by the heating coil,
The induction heating cooker according to claim 2 or 3, 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 7 or 8, wherein the first icon and the second icon are always displayed on the near side of the display position of the guide area on the display screen. The display screen is covered by the top plate,
The induction heating cooker according to claim 7 or 8, 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.   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 claim 7 or 8, 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 claim 7 or 8, characterized in that information on the two is reported from the voice guide device. The control device displays an image diagram showing the number and arrangement of heating coils to be driven at the stage of displaying the second icon on the display screen,
The said control apparatus displays the thermal 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. 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,
On the back side of the display screen, in order to serve also as the detection electrode, an electrode for detecting that the user has touched from a change in capacitance is provided,
The guidance according to claim 7 or 8, wherein the control device issues a warning by the voice guidance device when detecting that the user touches the electrode in the selection scene of the first icon. Cooking cooker. 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,
8. The voice guidance device notifies the touch position when the user touches one of the position notification icons when the user does not touch the first icon. Or the induction heating cooking appliance of 8. 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 switches and displays the function of the position notification icon as a second icon on the display screen when detecting that the user touches the first icon. Item 9. The induction heating cooker according to Item 7 or 8. A main body having a top plate on the top surface having a flat area on which the first heated object and the second heated object can be placed simultaneously;
Inside the main body, a plurality of heating coils regularly arranged on a horizontal plane so as to be adjacent to each other,
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit that determines whether or not the first and second to-be-heated objects are 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 controller for controlling 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,
In the display area of the display screen, the control device determines that the heated object placement determination unit determines that the first heated object is placed on the heating coil. To display 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 displays the second icon on the second icon. By detecting that the touch is performed, the first object to be heated corresponding to the first icon is selected as a heating target, and operates so that the heating condition can be input,
A detection electrode for detecting that the first or second object to be heated has approached the display screen;
The induction heating cooker, wherein the control device performs a predetermined corrective action when the detection electrode detects that the first or second object to be heated has abnormally approached.   The corrective action prompts an operation to change the placement position of the first or second object to be heated that is abnormally close to the display screen. 24. The induction heating cooker according to claim 23, wherein information for prompting the change is displayed.   In the voice guide device, the corrective operation is performed to change the placement position of the first or second heated object that is abnormally close to the display screen. 24. The induction heating cooker according to claim 23, wherein voice information prompting the user to change is emitted.   24. The control device according to claim 23, wherein the control device performs the correction operation at a stage before starting the induction heating operation by closing the main power switch and at a stage after starting driving the inverter circuit. Induction heating cooker.   The controller is configured to supply a high-frequency current from the inverter circuit to the heating coil to heat the object to be heated, and when the object to be heated is moved to another position on the top plate by a user, Based on the detection result of the heated object placement determination unit after the movement, the first icon is displayed again on the display screen, and is executed before the movement by operating the first icon. The induction heating cooker according to claim 23, further comprising an operation program that can apply the cooking conditions that have been performed to the cooking after the movement. 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 input 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. 26. The induction heating cooker according to claim 24 or 25, 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,
26. The induction heating cooker according to claim 24 or 25, wherein after the icon is displayed, reference information for touching the first icon by the voice guidance device is notified by voice.   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. 26. The induction heating cooker according to claim 24 or 25.   The induction heating according to claim 24 or 25, wherein the control device displays an icon of a cooking mode in which a driving pattern of a heating coil can be selected at a stage of displaying the second icon on the display screen. Cooking device.   26. The induction according to claim 24 or 25, wherein the control device displays an image diagram showing the number and arrangement of heating coils to be driven when the second icon is displayed on the display screen. Cooking cooker.   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 claim 24 or 25, 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,
26. The induction heating cooker according to claim 24 or 25, wherein, in the beginner mode, the voice guide device reports information that is helpful for a user to perform a touch operation on the first icon. The display screen is disposed on the near side of the front end of the induction heating region by the heating coil,
34. The induction heating cooker according to claim 33, wherein, on the display screen, the first icon is always displayed in front of the display position of the guide area. 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 33, wherein the first icon and the second icon are always displayed on the front side of the display position of the guide area on the display screen. The display screen is covered by the top plate,
The induction heating cooker according to claim 23, 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.   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 claim 23 or 24, 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 24. The induction heating cooker according to claim 23, wherein information on the two is notified from the voice guide device. A main body having a top plate on the top surface having a flat area on which the first heated object and the second heated object can be placed simultaneously;
Inside the main body, a plurality of heating coils regularly arranged to be adjacent to each other;
An inverter circuit for supplying a high-frequency current to the heating coil;
A to-be-heated object placement determination unit that determines whether or not the first or second to-be-heated object 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 controller for controlling 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,
In the display area of the display screen, the control device determines that the heated object placement determination unit determines that the first heated object is placed on the heating coil. To display the first icon,
The control device simultaneously displays the first icon and a second icon for selecting a cooking condition on the display screen, detects that the user touches the first icon, and detects the first icon. 1 to be heated is selected, the user touches the second icon to enable input of heating conditions,
Furthermore, the control device is configured to supply a high-frequency current from an inverter circuit to the heating coil to heat the first object to be heated. When it is moved to the position, the first icon is displayed again on the display screen based on the detection result of the heated object placement determination unit detecting the first heated object after the movement. During the icon display period, display the icon to select the cooking conditions that were running before the move to apply to the cooked food after the move,
A detection electrode for detecting that the first or second object to be heated has approached the display screen;
The induction heating cooker, wherein the control device performs a predetermined corrective action when the detection electrode detects that the first or second object to be heated has abnormally approached.   The corrective action prompts an operation to change the placement position of the first or second object to be heated that is abnormally close to the display screen. 41. The induction heating cooker according to claim 40, wherein information for prompting the change is displayed.   In the voice guide device, the corrective operation is performed to change the placement position of the first or second heated object that is abnormally close to the display screen. The induction heating cooker according to claim 40, wherein the voice information prompts the user to change.   41. The control device according to claim 40, wherein the control device performs the correction operation at a stage before starting the induction heating operation by closing the main power switch and at a stage after starting driving the inverter circuit. Induction heating cooker. A main body having a top plate having a flat area on which an object to be heated can be placed;
Inside the main body, a plurality of heating coils regularly arranged to be adjacent to each other;
A heated object placement determination unit that determines whether the heated object is placed immediately above the heating coil;
A non-heating area in which a non-heating cooking utensil for non-contact power feeding provided on the upper surface of the main body is placed;
A feeding coil disposed below the top plate at a position corresponding to the non-heated area;
An input operation unit provided on the upper surface of the main body;
A main power switch provided on the main body;
A first inverter circuit for supplying a high-frequency current to the heating coil;
A second inverter circuit for supplying a high-frequency current to the feeding coil;
A control device for controlling the input operation unit, the first and second inverter circuits, and the voice guide device;
The input operation unit is configured to unify and set cooking conditions for all heated objects placed on the top plate,
The input operation unit has a display screen on which a plurality of types of icons for touch input are displayed,
In the display area of the display screen, the control device determines that the heated object placement determination unit determines that one heated object is placed on the heating coil. Display one first icon corresponding to the object to be heated;
The control device determines that the first icon corresponding to the object to be heated is selected by an operation in which a user touches a predetermined position on the top plate, and then the cooking condition of the object to be heated is determined. To be able to input
The display screen of the input operation unit is disposed below the top plate,
A detection electrode for detecting that the object to be heated has approached the display screen and the non-heated area;
The induction heating cooker, wherein the control device performs a predetermined corrective action when the detection electrode detects that the first or second object to be heated has abnormally approached.   Information for prompting the corrective action to change the placement position of the heated object on the display screen in order to prompt the action of changing the placement position of the heated object that is abnormally close to the non-heating area. 45. The induction heating cooker according to claim 44, wherein the induction heating cooker is displayed.   The correction operation urges the voice guide device to change the placement position of the heated object in order to promote an operation of changing the placement position of the heated object that is abnormally close to the non-heating area. 45. The induction heating cooker according to claim 44, wherein the induction heating cooker is to emit voice information.

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