WO2016017198A1 - Induction heat cooking device - Google Patents

Abstract

In this device, whereby one object to be heated is heated through the coordinated operation of a plurality of heating coils situated under the object to be heated among four or more heating coil groups that have been placed so as to neighbor one another, the position of the object to be heated (N) that has been placed over a top plate above the heating coils is detected by a control device, the detected position of the object to be heated is displayed by the control device on a display screen via a first icon that a user can operate, the control device detects whether or not this first icon is selected correctly by the user, and if selected correctly, enables a configuration that allows induction heating to be started. The control device has a priority mode for a preceding object to be heated, wherein, if, in the middle of heat-cooking the object to be heated, a movement thereof to a different position is detected, priority is given to the resumption of the heat-cooking operation for this moved object to be heated.

Description

Induction heating cooker

The present invention relates to an induction heating cooker, and more particularly to an induction heating cooker of a type in which a single 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) Japanese Unexamined Patent Publication No. 2014-44852 (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 the heating coils are arranged so as to be close to or adjacent to the lower side of the top plate is compared with the 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 relatively freely on the top plate for cooking, but this causes a new problem. That is, when the first heated object is placed in a certain heating area and cooking is to be started using the second heated object during cooking, the first first heated object is placed. Then, when it becomes clear that the second object to be heated cannot be placed, or the positional relationship between the objects to be heated is poor and the work cannot be easily performed, the first object to be heated that has already started cooking. Needs to be moved to another position.
However, conventionally, in such a case, it has been difficult to move the first object to be heated to an appropriate position and restart the cooking. In particular, in the case of an automatic cooking menu (also referred to as “automatic cooking mode”) (for example, a cooking device that automatically controls heating power, target temperature, etc., and finishes cooking after a predetermined time through a predetermined cooking process). If the object to be heated is moved during the cooking process, the cooker may not be able to temporarily detect the presence of the object to be heated and may automatically stop for safety reasons. Even if the same automatic cooking is set again after repositioning, the finish of cooking does not become as expected, and it takes extra cooking time, which is inconvenient for the user anyway There was a problem.

In the present invention, the icon displayed on the display means for selecting the object to be heated can be easily selected by the user, and even if the object to be heated that has started cooking is moved to another position, It is to be able to resume cooking under desired conditions.

The induction heating cooker according to the first invention is
A main body having a top plate on which an object to be heated is placed;
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 for determining whether or not an object to be heated is placed immediately above the heating coil;
An input operation unit provided on the upper surface of the main body;
A main power switch provided on the main body;
A 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,
In the control device, the object to be heated is placed in the display area of the display screen based on a result of the determination that the object to be heated is determined that the object to be heated is placed on the heating coil. Display the number of icons corresponding to
The control device operates to input a cooking condition for the first heated object by detecting that the user touches the first icon corresponding to the first heated object. ,
Further, the control device is configured to supply a high-frequency current from the 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 first object to be heated has moved to another position on the top plate, the first object to be heated is cooked rather than the cooking condition setting of the second object to be heated. It has a preceding heated object priority mode that prioritizes resumption of operation.

According to the induction heating cooker of the first aspect of the present invention, the object to be heated can be specified by touching the display screen of the operation unit, and the second object is heated while cooking the first object to be heated. In the case where the heated object is placed on the top plate, when it is detected that the first heated object has moved to another position on the top plate, the cooking condition for the second heated object is With the preceding heated object priority mode that prioritizes resuming the heating and cooking operation of the first heated object over the setting, it is possible to smoothly resume the cooking that was temporarily interrupted with the movement of the first heated object. it can. For this reason, a user's operativity can be improved.

The induction heating cooker according to the second invention is
A main body having a top plate on which an object to be heated is placed;
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 for determining whether or not an object to be heated is placed immediately above the heating coil;
An input operation unit provided on the upper surface of the main body;
A main power switch provided on the main body;
A 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,

The controller is configured to determine whether the object to be heated is determined to be in a state in which the object to be heated is mounted on the heating coil. Display the icon,
The control device displays a second icon for selecting a cooking condition on the display screen when detecting that the user touches the first icon, and then displays the second icon on the second icon. By detecting that the user has touched, the first object to be heated corresponding to the first icon is selected as a heating target, and operates so that input of heating conditions can be performed,
Further, the control device supplies a high-frequency current from the inverter circuit to the heating coil to heat the first object to be heated, and the first object to be heated is separated from the top plate by a user. The first icon is displayed again on the display screen based on the result of detection by the heated object placement determination unit of the first heated object after the movement, By operating the first icon, it has an operation program that can apply the cooking condition executed before the movement to the cooking after the movement.

According to the induction heating cooker of the second 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 object to be heated at the position after the movement, and the cooking condition that has been executed before the movement is determined according to the operation of this icon. It is possible to smoothly resume the cooking that has been temporarily suspended. For this reason, a user's operativity can be improved.

The induction heating cooker according to the third invention is
A main body having a top plate on which an object to be heated is placed;
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 for determining whether or not an object to be heated is placed immediately above the heating coil;
An input operation unit provided on the upper surface of the main body;
A main power switch provided on the main body;
A 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,
The controller is configured to determine whether the object to be heated is determined to be in a state in which the object to be heated is mounted on the heating coil. Display the 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 has touched the first icon, and is heated. When an object is selected, it is detected that the user has touched the second icon, and heating conditions can be input.
Further, 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 the user, The first icon is displayed again on the display screen based on the detection result of the heated object placement determination unit after the movement, and before the movement during the display period of the first icon. An icon for selecting application of the cooking condition that has been executed to the cooking process after movement is displayed.

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.

According to the present invention, in a multi-coil induction heating cooker, even if a user moves an object to be heated to another position during a cooking operation, there is no unnecessary confusion and the conventional cooking is not performed. The cooking operation can be resumed by taking over the above condition. For this reason, it is possible to prevent the operation method from becoming complicated, and to realize a correct and easy-to-understand operation.

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. 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 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. It is a flowchart figure which shows the control action of the control apparatus of the induction heating cooking appliance of FIG.

Embodiment 1 FIG.
The first embodiment will be described below 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 1 and a top surface 2.

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

4 is a transparent window formed in the center of the left and right at a position near the front end of the top plate 3. Corresponding to this window, a liquid crystal display substrate (not shown) for displaying the heating operation state or the user's cooking condition setting information is disposed at a position close to the lower surface of the top plate 3, and this liquid crystal display substrate The display screen portion can be viewed from above the top plate 3 through the window 4. Reference numeral 5 denotes an input operation unit that is disposed horizontally at the front end of the top surface 2. This input operation unit is for setting and changing various conditions of induction heating cooking (for example, heating power, heating time, etc.) and instructing the 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, a display screen 30 on which a first icon 20 (to be described later) is displayed appears visually, although it does not appear as a physical structure. Although a specific portion of the top plate 3 itself does not emit light or generate an image, in the following description, 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, a range indicated by a one-dot chain line in a rectangle is a heating area. A large number of heating coils 10 having a circular outer shape with a diameter of several centimeters to 10 cm are regularly arranged below the top plate 3 corresponding to the heating area 8. 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 one 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 here. It is. In the following description, when there are a plurality of objects to be heated and need to be distinguished from each other, symbols such as N1, N2,... Are used. Product N ".

In the plan view of FIG. 3, the arrangement of the heating coil 10 and the sensor 12 is illustrated so that the top plate 3 is actually above the heating coil 10 and the sensor 12. It is not visible 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 already various proposals for the method of the heated object placement determination unit 11 for determining whether or not the heated object N is placed. For example, Japanese Patent Publication No. 2010-165656 is not described in detail. 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 using the reflected light, or a weak current is applied to the heating coil to be heated. Various methods such as a method of detecting the presence of the 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 a first icon 20 and 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 input 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, etc. are displayed in the first display area 40 which cannot be moved and displayed and is 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.

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

In FIG. 2, 37 is a drive circuit for driving 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.

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, it is composed of a circular image diagram 46 of the heating coil 10 and an image diagram 20N of the heated object N. The first icon 20 (20A, 20B) appears on the display screen 30 at the front end (front end) of the top plate 3, but the relative size of these image diagrams is the actual heating coil 10 and the heated object. It does not have to completely match the relative size of the object 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 housing 1A that is formed in a box shape by joining a plurality of metal thin plates by fixing means such as spot welding or screwing, and the upper surface is open. Inside the casing 1A, the heating coils 10 are regularly arranged on the top so as to be as close to the lower surface of the top plate 3 as possible. A plastic upper decorative plate 13 and a plastic lower decorative plate 14 are provided on the right side of the front surface of the main body 1. The two decorative plates 13 and 14 are arranged on the front wall (not shown) of the housing 1A. 2) are attached individually with screws or the like. In addition, you may provide the operation button 15A of the main power switch 15 mentioned later and the heating power adjustment dial (not shown) at the time of induction heating cooking in the part of this upper decoration board 13. FIG.

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

Further, a first air inlet 16 is formed on the rear right corner side of the housing 1A. The first air inlet 16 includes a heating source composed of the grill chamber and the 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 heating coil 10. In addition, although not shown in figure, the electric blower for generating the cooling air is installed inside the housing 1A. Further, a second intake port (not shown) is provided on the rear surface of the housing 1A for the same purpose as the first intake port 16.

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

In FIG. 1, 15A is an operation button arranged in the input 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 heating coil 10 and electric radiant heat cooking of the grill section 6, the control device 23 monitors the presence or absence of 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 housing 1A. However, when the temperature exceeds 65 ° C., the controller 23 determines that an abnormal state has occurred, and immediately stops the heating operation. Therefore, for example, the power supply of the inverter circuit 25 (described later) is cut off.

And the abnormality monitoring data of the main part (temperature of the above-mentioned display screen 30 as an example) of the induction heating cooker in the period from such an abnormal preliminary state to an emergency stop at least in the memory | storage part of the control apparatus 23 And sequentially stored in time series. The abnormality monitoring data stored in the storage unit 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, the abnormality monitoring data up to that point is stored in the storage device 23R. 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, and the like according to a sequence determined by the energization control program of the control device 23. 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 heating coil 10. The 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 heating coils 10 (5 in one row in the vertical direction and 8 in one row in the horizontal direction), the heating coils 10 are divided into two groups of 20 each, and the first group is divided into the first group. The second inverter circuit 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.

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

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

31 is a voice guide device that synthesizes electronically created voice, and notifies the user of operation guidance to the user and warning notification when an abnormality occurs from the speaker 32 each time. This voice guide device corresponds to the “voice guide device” in the present invention.

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

33 is a steam supply device that supplies high-temperature steam to the inside of the grill cabinet, and steam cooking can be performed in the grill cabinet with 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.

2, reference numeral 36 denotes a material detection (determination) means for the object to be heated N, and a current detection means that flows through the 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 on the heating coil 10, it can detect that an input electric current reduces rapidly and the to-be-heated object N has moved to another place.

In FIG. 2, reference numeral 11 denotes a heated object placement determining unit that determines whether or not 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 heating coil 10, the light emitted from the optical sensor does not reflect, so that the object N to be heated becomes a specific heating coil 10 due to the reduction of the reflected light. It can be detected that the user is moving to another place.

The sensors 12 are installed one by one in the 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 there is a relationship such that one heated object N1 covers the upper side of at least four heating coils 10. Therefore, the sensor 12 can be changed between the two adjacent heating coils 10.

The left heated object N1 shown 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 a bottom surface shape close to a perfect circle, but the right side shown by the broken line in FIG. The to-be-heated object N2 has a maximum diameter of the bottom surface in contact with the top plate 3 of about 30 cm, and the bottom surface shape is close to an ellipse. As described above, the object to be heated N2 having an elliptical or rectangular bottom shape can also be heated by induction.

In FIG. 4, 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 a guide area for displaying the display information 45A in characters, 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.

4, 49 is order information indicating the order in which the article N to be heated 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 the 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 displaying the second icons 60A to 60F, the third icons 65 to 67, the fifth icon 70, and the like.

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 first 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” using the input 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 input operation unit 5. Note that selection means such as a push button switch may be provided in the main body 1 and the operation mode may be selected with the switch. When the beginner mode is set, the voice guide contents of the voice guide device 31 are performed in more detail than in the normal mode. In addition, the display screen 30 also displays unique to the beginner mode. In addition, the technique of the heating cooker which can select such a beginner mode and a normal mode is already known, for example by Japanese Patent Publication (2009-243771, 2009-193822).

When the user has set the “normal mode”, the fourth icon 50 is not displayed in synchronization with the display of the first icon 20 as shown in FIG. 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. 4 to 7 is shown.

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 (second icons) 60A to 60F for specifying the heating capacity (also referred to as thermal power) during induction cooking are displayed. The second icon 60A for the minimum thermal power and the second 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.

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) that can select the drive pattern of the heating coil 10 when the second icons 60A to 60F are displayed on the display screen 30. is there. 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, 70 is 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 voice 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).

8, reference numeral 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 10 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. .

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, 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. 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.

8, reference numeral 80 denotes a partition frame formed on the upper 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. The partition frame is a bank-like shape that rises about 1 to 2 mm on the top 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 1 to S 21 are operation steps based on the control program of the microcomputer constituting 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 the presence of the object to be heated N is detected, the process proceeds to step S5, and the placement position and material determination of the object to be heated N are performed. When a very large iron plate is placed (for example, when an iron plate having an area covering the adjacent 10 heating coils 10 is placed), it is determined that the object N is inappropriate for heating. Is done. In addition, an object to be heated N that is determined to be formed of a non-magnetic material such as copper or aluminum, or a portion that occupies a considerable area of the bottom surface, is also determined as an inappropriate object to be heated N, and an error display is displayed In step (S20), a message to that effect is displayed on the display screen 30, and the voice guidance device 31 also informs with a voice such as "This cooking utensil cannot be used because the material does not match".

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

The voice guidance 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 S11, it is determined whether or not there is a substantial difference between the touch position and the position of the first icon 20. In the position determination here, the coordinates of the allowable range (reaction range) are set in advance even if the coordinate values corresponding to both the positions of the first icon 20 and the touch position do not completely match. A determination is then made as to whether or not it is within that range. Accordingly, even if the position of the fingertip FG is slightly shifted back and forth and left and right, it is determined that the touch has been made.

If it is determined in step S11 that there is no difference in position, the process proceeds to the next step S12.
On the other hand, if the result of the determination is that there is a difference between the two positions, the process proceeds to step S19, where the voice guide device 31 voices that the touch position is different (away from the first icon). To inform. In this case, in step S10, since it is known from the coordinate value whether there is a difference between the touch position and the position of the first icon 20, the position touched immediately before to match the coordinate value. 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 steps as described above, 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 a heating operation start command is given by the second icon 60A to 60F or the third icon 65 to 67 in the next step S13, the placement position of the heated object N The high frequency power is supplied from the inverter circuit 25 only to the specific heating coil 10 in (1), and the heating operation is started (S14). When the heating stop operation is performed or a set time called timer cooking is exceeded (S15), the inverter circuit 25 is stopped (S16). During the period of induction heating by the inverter circuit 25, the material detection (judgment) means 36 of the object to be heated N also detects the output side current of the heating coil and also detects the input current on the power supply circuit 22 side. The detection result is continuously transmitted to the control device 23 so that the intended heating ability (thermal power) is always exhibited. Therefore, the control device 23 can perform heating driving by controlling the output of the inverter circuit 25 within the target range.

After the inverter circuit 25 is stopped, 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 (S17). And it waits as it is only for predetermined time (for example, 10 minutes), and waits for the mounting detection signal of the to-be-heated object mounting determination part 11 to receive the to-be-heated object N (N2).

If it is determined in step S17 that 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 S18. In step S18, when the user turns off the main power switch 15 or a certain time (for example, 30 minutes) has passed, the temperature detection that the temperature of the top plate 3 has decreased to a safe temperature. At the stage detected by the circuit 24, the main power switch 15 is automatically turned off and the process ends (S19).

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

Next, “movement of the object N to be heated during the cooking operation” (change of the placement position), which is the central part of the present invention, will be described.
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 (the right side portion of the heating area 8) before the timing (step S36) of placing the second heated object N2, the mounted object is placed. Since the position determination unit 11 is not on the specific heating coil 10, the object placement determination unit 11 that monitors the position where the first object N1 is placed is the object to be heated. Since the first heated object N1 that has been removed from the placement portion, that is, a no-load state is detected and transmitted 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). That is, 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 which the second heated object N2 is placed in the heating area 8 (step S36) is changed back and forth, the first heated object N1 is always provided. This heating cooking condition setting has priority over the heating 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 51 to S 70 are operation steps based on the control program of the microcomputer constituting 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) with 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 (S55). It is determined that the previous first heated object N1 has been placed again, and the display screen 30 has a first icon 20 for selecting the first heated object N1 on the display screen 30. Appears (S56).

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, a display for requesting confirmation of whether or not the cooking condition should be applied as it is to the first heated object N1 is performed on the display screen 30 (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. (S66). 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 (S67), a cooking condition such as heating power is set (S67), and when a heating operation command is issued (S68), an inverter is set. The circuit 25 is driven again to resume cooking (S62).
In addition, when the 1st to-be-heated object N1 is not detected anywhere in the heating area 8 in the said step S54, it waits for 3 minutes as it is, and even if 3 minutes pass, the 1st to-be-heated object N1 is not detected. 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. Then, as in step S5 shown in FIG. 9, the mode is switched to the “mode for using another object to be heated”, and a new cooking process is started via steps S5 to S21 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 to 16 are plan views showing an operation process of the display screen 30 of the induction heating cooker 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 display information 55 is displayed in the form of “after moving” so as not to cause misunderstanding when the first icon 20A is touched, and “1” is meant to indicate the beginning of the touching process. A number 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 application of a new cooking condition are displayed at the same time. By touching any one of these icons, the processing result of step S60 in FIG. change. That is, if the condition selection icon 56 is touched, “YES” is determined in the step S60. 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 modification 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. Then, in the first display area 40, the fact that the first cooked object N1 has been determined as the cooking utensil to be used is displayed in the guide area 45 as display information 58 using characters.

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 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 heated object placement determining unit 11 for determining whether or not the heated object N 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 area of the display screen 30 based on 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 object to be heated N is displayed in 40,
The control device 23 detects that the user has touched the first icon 20A corresponding to the first heated object N1, so that the cooking condition for the first heated object N1 is input. Behave like you can,
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, and the second heated object N2 is placed on the top plate 3. When it is detected that the first heated object N1 is placed and moved to another position on the top plate 3, the heating cooking condition setting of the second heated object N2 is performed. There is a preceding heated object priority mode (step S60 in FIG. 11) that prioritizes resuming the cooking operation of the first heated object N1, and a heating condition setting suspension period HT (see FIG. 10) of the second heated object N2. It is characterized by this.

According to the induction heating cooker of the first aspect of the present invention, the object to be heated N to be heated can be specified by touching the display screen 30 of the input operation unit 5, and the first object to be heated N1 is being cooked. In the case where the second object to be heated N2 is placed on the top plate 3, when it is detected that the first object to be heated N1 has moved to another position on the top plate 3, Temporarily with the movement of the first heated object N1 in the preceding heated object priority mode that prioritizes the resumption of the cooking operation of the first heated object N1 over the setting of the heated cooking condition of the second heated object N2. The cooking that has been interrupted can be smoothly resumed. For this reason, a user's operativity 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 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 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 determining unit 11 for determining whether or not the heated object N is placed immediately above the heating coil 10;
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 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 displays the display area of the display screen 30 based on the result that the heated object placement determining unit 11 determines that the heated object N is placed on the heating coil 10. The first icon 20 is displayed in 40,
When the control device 23 detects that the user has touched the first icon 20, the control device 23 displays second icons 60A to 60K, 61, and 62 for selecting a cooking condition on the display screen 30. 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
Further, the control device 23 causes the inverter circuit 25 to supply a high-frequency current to the heating coil 10 to heat the heated object N1 while the heated object N1 is heated on the top plate 3 by the user. When moved to the position, the first icon 20 is displayed again on the display screen 30 based on the result of the heated object placement determination unit 11 detecting the heated object N1 after the movement, It is characterized by having an operation program (described in FIG. 11) that can apply the cooking conditions performed before the movement to the cooking after the movement by operating the icon 20 of 1. .

According to the induction heating cooker CH of the second aspect of the invention, the object to be heated N that can be heated by touching the display screen 30 of the input operation unit 5 can be specified. When the movement of the object to be heated N is detected, the first icon 20 is displayed again based on the detection result of the object to be heated N at the position after the movement. It is possible to smoothly resume the cooking that has been temporarily interrupted by applying the cooking conditions that have been executed. For this reason, a user's operativity 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 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,
An inverter circuit 25 for supplying a high-frequency current to the heating coil 10;
A heated object placement determining unit 11 for determining whether or not the heated object N 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 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 area of the display screen 30 based on the result that the heated object placement determining unit 11 determines that the heated object N is placed on the heating coil 10. The first icon 20 is displayed in 40,
The control device 23 simultaneously displays the first icon 20 and the second icons 60A to 60K, 61, 62 for selecting the cooking conditions on the display screen 30, and the first icon 20 The object to be heated N is selected by detecting that the user has touched, and it is possible to input heating conditions by detecting that the user has touched the second icons 60A to 60K, 61, 62,
Further, the control device 23 supplies a high-frequency current to the heating coil 10 from the inverter circuit 25 to heat the object N to be heated, so that the object N to be heated is another user on the top plate 3 by the user. When moved to the position, the first icon 20 is displayed again on the display screen 30 based on a result of the heated object placement determination unit 11 detecting the heated object N after the movement, The condition selection icons 56 and 57 for selecting to apply the cooking condition that has been executed before the movement to the cooking after the movement during the display period of the icon 20 of 1 are displayed. is there.

According to the induction heating cooker of the third aspect of the invention, the object to be heated N to be heated can be specified by touching the display screen 30 of the input operation unit, and the object to be heated is heated during cooking. When the movement of the object N is detected, the first icon 20 is displayed again based on the result of detecting the heated object N at the position after the movement, and the first icon 20 is displayed during the display period. Since the condition selection icons 56 and 57 for selecting the application of the cooking condition that has been executed before the movement to the cooking after the movement are displayed, the first icon and the cooking condition for taking over the cooking condition are displayed. The condition selection icons 56 and 57 can be simultaneously confirmed on the display screen 30 to easily set the application of the cooking conditions performed before the movement, and the temporarily stopped cooking can be smoothly resumed. . For this reason, a user's operativity 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 becomes unnecessary 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 in front of the front end of the heating area 8 by the heating coil 10, and the first icon 20 is displayed on the guide area 45 on the display screen 30. This is a configuration that is always displayed in front of the 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 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): The help screen key that is the fourth icon 50 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 is displayed. 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 which is the fifth icon 70 is displayed on the display screen 30. When the information key is touched, the user at the stage of touching 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 60 is displayed, and the user's sense of security and operability are improved. It can be expected to improve.

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. 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. 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) for commanding the induction heating operation to stop. ).

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

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

In FIG. 17, the energization operation of the uppermost display frame 84A is also displayed as a schematic figure 85 schematically showing the heating coil 10 on the left side. That is, the display frames 84A to 84H correspond to the schematic figure 85 of the heating coil 10, 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 heating area 8 by the heating coil 10 (this is the same as in the first embodiment). However, in the second embodiment, three electrodes 90 are provided on the back side and the left and right sides of the display screen 30 to detect that the user has touched from the change in capacitance. One of the features is that when the user touches the electrode 90 in the selection scene of the first icon 20, an alarm is issued by the voice guide device 31. Even when the object to be heated N is excessively placed on the near side, the electrode 90 can detect the excessive approach of the object to be heated N, so that the object to be heated N is at the rear edge of the display screen 30. An abnormal placement such as approaching or a bottom surface covering the display screen 30 can be detected by the control device 23 and an alarm can be issued.

As shown in FIG. 18, the three electrodes 90 are formed on the top and bottom surfaces of the top plate 3 by vapor deposition or printing. That is, the electrode 90 includes an electrode 90 </ b> B disposed on the back side of the display screen 30 that is closer to the heating area 8, an electrode 90 </ b> R disposed along the right edge of the display screen 30, and the left edge of the display screen 30. A total of three electrodes 90L are arranged.

In 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.

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

In the state of FIG. 18, when the user touches the first icon 20A on the left side, 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 of 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 second icon 60A having the minimum thermal power, 150 W can be set, and with the second icon 60K having the maximum thermal power, 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.
In FIG. 20, S81 to S92 correspond to the operation steps S1 to S12 in FIG. 9 of the first embodiment. S100 corresponds to step S20 in FIG. Furthermore, since S101 is a step corresponding to S21 of FIG. 9, FIG. 20 demonstrates step S93 and subsequent steps.

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 is touched, step S33 is “YES”, and the flow proceeds to the next step S94.
On the other hand, when the user does not touch the start key (sixth icon 73), the determination in step S93 is repeatedly performed (however, for example, after 30 minutes have elapsed, it is automatically reset and returns to step S84).

In FIG. 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 (S96). 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 S98, 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 (S99).

The second embodiment is characterized by steps S102 and S103.
That is, 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 gives a heating operation start command. "Process" can be selected.

In step S94, for example, “You have just entered the 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”. The process proceeds to step S102 of the hold process.

When the hold process is selected in step S94, the cooking conditions such as the heating power set by the user are temporarily stored in the storage device 23R of the control device 23 in combination 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.

If 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 S102 to step S103. For example, when the placement of two or more objects to be heated N1 and N2 is detected at positions separated as shown in FIG. 11 in step S84, the object to be heated is again mounted in step S103. The placement determination unit 11 determines the placement positions of the objects to be heated N1 and N2.

In step S103, the object to be heated N1 (on the right side) selected with the first icon 20A in 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 S103, the process after step S85 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 S102, if another heated object N2 is not detected in the next step S103, the process proceeds to step S104, and after a certain time (for example, 30 minutes) has passed, the next step S98 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 (S99). However, the main power switch 15 is not automatically turned off unless the temperature detection circuit 24 detects that the temperature of the top plate 3 has decreased to a safe temperature (operates the electric fan for internal cooling of the main body 1). To continue).

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

Embodiment 3 FIG.
FIGS. 21 to 22 show an induction heating cooker (built-in type) according to Embodiment 3 of the present invention. FIG. 21 is a plan view of the induction heating cooker. FIG. 22 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. 21, 5 is an input operation unit provided in the main body unit 1, and 10 is a heating coil. In FIG. 21, the first heated object N1 whose bottom shape is circular is first placed at a position close to the left end of the top plate 3, and then the second elliptical shape is placed immediately on the right side thereof. The case where the to-be-heated material N2 is placed is shown. In addition, inside the main body 1, a thin rod-like or thin plate-like light guide 100 that guides visible light so as to surround all the heating coils 10, a light-emitting diode that introduces light into the light guide, and the like The light source 101 is built in. And it becomes the structure which can visually recognize the position of each heating coil 10 from the top plate 3 by radiating | emitting light from the light guide 100 in the circumference | surroundings to the top plate 3 side one by one. Yes. Informing the user of the heating area of each heating coil 10 by using the light guide 100 and the light source 101 is known from, for example, 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. 21, the outer diameter of each heating coil 10 is 10 cm, the bottom diameter of the first object N1 is 24 cm, the major axis of the bottom surface of the second object N2 is about 40 cm, and the minor axis 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 N2 is placed on the top plate 3, there are six heating coils 10 below the second heated object N2. 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. 21, after the first heated object N1 is placed on the top plate 3, a large first object N1 is placed next to the right of the first heated object N1. When two heated objects N2 are placed, the heated object placement determination unit 11 determines the positional relationship between the first and second heated objects N1 and N2, and the two heated objects N1 and N2 The interval W is notified by voice so as to be separated by approximately one heating coil 10, and is also notified by the light of the light guide 100 described above. Then, the position of the second object N2 indicated by the thin chain line in FIG. 21 is moved to the right by one heating coil 10 (only the dimension close to the gap dimension W in FIG. 21), and indicated by the thick chain line. It is set as the position of the second heated object N2.

Next, FIG. 22 will be described. In FIG. 22, S111 to S118 are the respective operation steps based on the control program of the microcomputer constituting the core of the control device 23, and are the parts relating to the position detection of the heated object N and the 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 N2 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 S115. 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 S117 that the distance is not less than the predetermined interval, the process proceeds to the normal processing mode. Note that the normal processing mode refers to processing as described in FIG. 9 of the first embodiment. Specifically, the process proceeds from steps S116 and S117 of FIG. 22 to step S5 shown in FIG. 9 (however, only the material determination is performed).

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

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

Embodiment 4 FIG.
23 to 25 show an induction heating cooker (built-in type) according to Embodiment 4 of the present invention. FIG. 23 is a plan view of the induction heating cooker. FIG. 24 is a flowchart showing the control operation of the control device for the induction heating cooker of FIG. 25 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. 23 receives a power consumption reduction command signal wirelessly or by wire from an external organization such as an electric power company via a power command device (not shown) installed in each household, and the reduction thereof. 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, in the prior art documents (Japanese Patent Publication No. 2014-120430 and Japanese Patent Publication No. 2011-55622), one or more heating ports are arranged 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.

The details will be described below. In FIG. 23, the induction heating cooker CH includes a top plate 3 on which an object to be heated N (N1, N2,...) Is placed on the top surface 2 and a horizontally long input operation unit 5 in front of the top plate 3. , And each.

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.

In the input operation unit 5, a horizontally long display screen 30 and an operation button 15A of the main power switch 15 are arranged. 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 if it is placed.

23, 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 placement position guide mark 103 is not pressed by the operation button 102 of the energy saving mode setting switch. In the normal operation mode, when the main power switch 15 is turned on, the first heating area 8P and the second heating area Although it appears in a frame shape surrounding 8N, when the energy saving mode is set, and when the induction heating cooker CH receives a power consumption reduction command signal and restricts a part of the heating area 8, the first heating is performed. The placement position guide mark 103 is displayed only for the first heating area 8P so as to emphasize only the area 8P.

Next, FIG. 24 will be described. In FIG. 24, 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 article 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, when it is determined that induction heating cooking is performed in the second heating area 8N, the process proceeds to step S124 and external (power command) is set as a response signal to perform the total power reduction setting process. To the device. And in order to restrict | limit the maximum rated electric power (6000W) of the induction heating cooking appliance CH to a fixed value lower than it, for example, 5000W, the internal electric power upper limit value used as the reference | standard of a restriction | limiting operation is changed into 5000W.

In the next step S127, the control device 23 checks whether or not the induction heating operation is finished, and if finished, the process 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 S125, the display screen 30 displays that the energy saving mode is automatically set in response to an external power reduction request. Further, since the energy saving mode is set by the voice guidance device 31, the second heating area 8N is notified by voice that induction heating cannot be performed even if the article to be heated N is placed, and the process ends (S129).

Next, FIG. 25 will be described. As described above, when the control device 23 receives the power consumption reduction command signal and when the user presses the operation button 102 of the energy saving mode setting switch (not shown), the energy saving mode is set. Although set, FIG. 25 shows changes in the display screen 30 before and after the energy saving mode is set.

In FIG. 25, 30N is a restriction target display area for displaying 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. 25A, the display area includes both the restriction target display area 30N and the priority display area 30P. However, since the heating area 8 is limited after the energy saving mode is set, only the priority display area 30P is displayed on the display screen 30 corresponding to this limitation, 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 cooked utensil or the like is not erroneously determined to be the heated object N, and then the user performs a confirmation operation (specification of the liquid crystal display screen 30). The safety measures are taken so that it can be released for the first time by touching the icon.

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 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, similarly to the first embodiment, the user can easily select the first icon 20 on the display screen 30, and the operability can be improved. In addition, it can be used conveniently.
For example, the first heating area can be limited to a certain range in the central portion of the top plate 3 and can be used as a narrow heating area 8 (8P) as a result. Alternatively, the rear end side of the top plate 3 farthest from the display screen 30 with the input operation unit 5 cannot be used (set to the second heating area 8N), and the entire heating 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. 26 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. 26 provides a restriction on the installation position of the object to be heated N, and even when the bottom surface of the object to be heated N is directly above the heating coil 10, a portion close to the outer periphery of the heating area 8. 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 article to be heated N straddles a range outside the heating coil 10 (indicated by reference sign SS in FIG. 26).
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. 26, 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. 26 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): In the guide area 45 of the display screen 30, an improper placement state is displayed with characters (display information 45A).
(3): The voice guide device 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. 26, it should be placed so as to cover only the two heating coils 10 adjacent in the front-rear direction. Induction heating cooking becomes possible.

As described above, the induction heating cooker according to the fifth embodiment shown in FIG. 26 includes the main body 1 having the top plate 3 on the top surface on which the heated 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 input operation unit 5 is provided in the front portion of the top plate 3, induction heating near the input operation unit 5 is prevented, and various electronic components and liquid crystal displays provided in the input operation unit 5 are prevented. Abnormal heating of electronic component elements for screens, substrates, etc. can be prevented, and the safety of any built-in or stationary induction heating cooker can be improved.

Embodiment 6 FIG.
27 to 29 show an induction heating cooker (built-in type) according to Embodiment 6 of the present invention. FIG. 27 is a plan view 1 of the induction heating cooker. FIG. 28 is a plan view 2 of the induction heating cooker. FIG. 29 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 food to be cooked is blown from the heated object N, the blown detection electrodes 104, 105, 106, 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. This is already known, for example, from Japanese Patent Publications (Japanese Patent Application Laid-Open Nos. 2010-182659 and 2010-1826262), and therefore the explanation of the principle of detection of blow-out is omitted.

A spill detector (not shown) can detect spills 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.

FIG. 28 shows a case where the loop-shaped detection electrode 106 in the left front (front side) portion in the heating area 8 detects a spill. In this case, as shown in FIG. 28, 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 the spilling occurs but also at the start of induction heating cooking (immediately before the start), as will be described later, and 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. 23 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 a spill. When the spilling is detected, the driving of the heating coil 10 within 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, when the thermal power is set at any one of 11 levels (see FIG. 8) by the user as described above, the level is lowered by 3 levels. 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. 29 will be described. In FIG. 29, steps S130 to S143 are the respective operation steps based on the control program of the microcomputer constituting the core of the control device 23, and the heated object N 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 S130 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 drive 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 S130, but when 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. .

Through the above-described processing, 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 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. 28, since the light guide 100 receives light emitted from the light source 101 and draws a 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 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. 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 detecting blowout that has been stopped in the step S133 (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. 27 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 heated object N2 shown in FIG. A detection current is applied to the electrode 104.

When induction heating cooking is started and the liquid in the object to be heated N boils and it is detected by at least one of the detection electrodes 104 to 107 that the spill has occurred, the process proceeds from step S138 to step S139. .

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 S139 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 elapses, the process proceeds from step S142 to step S143 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, the induction heating cooker according to the sixth embodiment 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 spillage detection unit detects a spillage, a specific heating area 8 of the top plate 3 having the detection electrodes 104 to 107 that has detected the spillage is visually recognized as a spillage detection area below the top plate 3. It is the structure which has the light source 101 illuminated from.
Further, 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 moving the to-be-heated material N during heat cooking, in order to apply the conventional heat cooking conditions (thermal power etc.) also to the heat cooking after movement, condition selection as shown in FIG. 15, FIG. If icons 56 and 57 are displayed on display screen 30 so that they can be selected, temporarily interrupted cooking can be smoothly resumed and used as described in the second embodiment. The user's operability can be improved.

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

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, such an induction heating cooker for an island type kitchen is proposed in FIG. 51 of Japanese Patent Publication No. 2013-206549 and FIG. 19 of Japanese Patent Publication No. 2013-4330. 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 same effect as 1 to 6 can be obtained. 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 N object to be heated N1 first object to be heated N2 second object to be heated N3 to N7 object to be heated 1 main body 1A housing 2 top surface 3 top plate 4 window 5 Input operation unit 6 Grill unit 6A Grill door 8 Heating area 8N Second heating area 8P First heating area 10 Heating coil 10A Cavity 11 Heated object placement determination unit 12 Sensor 12A Sensor 12B Sensor 13 Upper decorative plate 14 Lower decoration Plate 15 Main power switch 15A Operation button 16 First inlet 17 Exhaust 18 Exhaust 20 First icon 20A First icon 20B First icon 21 Power line 22 Power supply circuit 23 Controller 23R Storage device 24 Temperature detection Circuit 25 Inverter circuit 26 Seeds heater 27 Grill heater drive circuit 28 Catalyst heater 29 Catalyst heater Drive circuit 30 display screen 30N restriction target display area 30P priority display area 31 voice guide device 32 speaker 33 steam supply device 34 clock circuit 35 vibration sensing device 36 material detection (determination) means 37 of heated object N drive of liquid crystal display substrate Circuit 39 Touch detection range 40 First display area 41 Second display area 42 Third display area 45 Guide area 45A Display information 46 Circular image diagram of heating coil 48 Order information 50 Help mode key (fourth icon)
51 reaction area (detection part)
52 reaction area (detection part)
53 Guidance mark 55 Display information 56 Condition selection icon 57 Condition selection icon 58 Display information 60 Icon display areas 60A to 60K for thermal power setting 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 Figure 73 Start Key (Sixth Icon)
74 Stop key (seventh icon)
75 Next screen command key (8th icon)
80 Partition Frame 82 Cooking Menu Display Unit 83 Display Units 84A to 84H Display Frame 85 Schematic Figure 87 Thermal Power Display Area 88 Icon (11th Icon)
89 icon (12th icon)
90 electrode 90B electrode 90L electrode 90R electrode 91 guide key (13th icon)
91C Guide key 91L Guide key 91R Guide key 100 Light guide 101 Light source 102 Energy saving mode setting switch operation button 103 Placement position guide mark 104 Detection electrode 105 Detection electrode 106 Detection electrode 107 Detection electrode 108 Light frame.

Claims (44)

1. A main body having a top plate on which an object to be heated is placed;
   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 for determining whether or not an object to be heated is placed immediately above the heating coil;
   An input operation unit provided on the upper surface of the main body;
   A main power switch provided on the main body;
   A 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,
   In the control device, the object to be heated is placed in the display area of the display screen based on a result of the determination that the object to be heated is determined that the object to be heated is placed on the heating coil. Display the number of icons corresponding to
   The control device operates to input a cooking condition for the first heated object by detecting that the user touches the first icon corresponding to the first heated object. ,
   Further, the control device is configured to supply a high-frequency current from the 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 first object to be heated has moved to another position on the top plate, the first object to be heated is cooked rather than the cooking condition setting of the second object to be heated. An induction heating cooker having a preceding heated object priority mode that prioritizes resumption of operation.
2. 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 determination unit is activated, and the placement status of the heated object is displayed on the display screen. Display with the icon 1
   2. The induction heating cooker according to claim 1, wherein after the first icon is displayed, information that serves as a reference for touching the first icon by the voice guide device is notified by voice.
3. When the control device detects that the user has touched the first icon, the control device can turn off the display of the first icon on the display screen, and select a thermal power level during cooking by touch operation. The induction heating cooker according to claim 1, wherein each of the heating power keys is displayed as a second icon.
4. When the control device detects that the user has touched the first icon, the control device turns off the display of the first icon on the display screen, and the heating time for cooking can be selected by a touch operation. The induction heating cooker according to claim 1, wherein the time setting keys are displayed as second icons.
5. After the placement status of the object to be heated is displayed on the display screen by the first icon, the voice guide device informs information for guiding from a specific position on the display screen to the display position of the first icon. The induction heating cooker according to claim 1, wherein:
6. The said control apparatus displays the 3rd icon which is the icon of the cooking mode which can select the drive pattern of the said heating coil in the step which displayed the said 2nd icon on the said display screen, The induction heating cooker according to any one of 3 to 5.
7. 6. The control device according to claim 3, wherein when the second icon is displayed on the display screen, an image diagram showing the number and arrangement of the heating coils to be driven is displayed. The induction heating cooker of Claim 1.
8. The control device, at the stage of displaying the first icon on the display screen, at least one of information recommending touching the first icon or information indicating operational precautions is a character. 6. The induction heating cooker according to claim 3, wherein the expressed guide area is displayed.
9. The operation mode of the voice guidance device is further selected by the user's selection operation, and means for selecting any mode from the normal mode and the beginner mode,
   6. The voice guidance device according to claim 3, wherein, in the beginner mode, the user informs reference information for a touch operation on the first icon. Induction heating cooker.
10. The display screen is arranged closer to the front side than the front end of the heating area by the heating coil,
    The induction cooking device according to claim 8, wherein the first icon is always displayed on the near side of the display position of the guide area on the display screen.
11. The display screen is arranged closer to the front side than the front end of the heating area by the heating coil,
    The induction heating cooker according to claim 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.
12. The display screen is covered by the top plate,
    6. The coordinate detection electrode of the touch position of the first icon and the second icon is arranged on the surface of the top plate, according to any one of claims 3 to 5. Induction heating cooker.
13. On the display screen, a help mode key that is a fourth icon is displayed. When the help mode key is touched, a user who is touching the first icon is instructed to be heated. The induction heating cooker according to any one of claims 2 to 5, wherein information that supports an operation of selecting a heated object is notified from the voice guide device.
14. An information key that is a fifth icon is displayed on the display screen, and when the information key is touched, a user who touches the second icon is notified of the heating coil. At least the heating coil driving pattern for each cooking mode in which the driving pattern can be selected, the heating cooking condition setting method for saving power consumption, the precautions when setting the heating power, and the safety precautions during cooking The induction heating cooker according to any one of claims 3 to 5, wherein information on any one of the information is notified from the voice guide device.
15. The control device displays an image diagram showing the number and arrangement of the heating coils to be driven at the stage of displaying the second icon on the display screen,
    The said control apparatus displays the thermal power and energization time of the said heating coil in the stew mode which is one of the cooking modes in the step which displayed the said 2nd icon on the said display screen, It is characterized by the above-mentioned. The induction heating cooker described in 1.
16. The display screen is arranged closer to the front side than the front end of the heating area by the heating coil,
    On the back side of the display screen, an electrode for detecting that the user has touched from a change in capacitance is provided,
    The induction heating cooking according to claim 9, wherein the control device issues an alarm by the voice guide device when detecting that the user touches the electrode in the selection scene of the first icon. vessel.
17. The display screen is arranged closer to the front side than the front end of the heating area 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 when the user does not touch the first icon, the voice guide device notifies the touch position of the position notification icon. The induction heating cooker according to claim 9.
18. The display screen is arranged closer to the front side than the front end of the heating area 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 of the position notification icon,
    The control device switches and displays the function of the position notification icon as the second icon on the display screen when detecting that the user touches the first icon. The induction heating cooker according to claim 9.
19. A main body having a top plate on which an object to be heated is placed;
    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 for determining whether or not an object to be heated is placed immediately above the heating coil;
    An input operation unit provided on the upper surface of the main body;
    A main power switch provided on the main body;
    A 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,
    The controller is configured to determine whether the object to be heated is determined to be in a state in which the object to be heated is mounted on the heating coil. Display the icon,
    The control device displays a second icon for selecting a cooking condition on the display screen when detecting that the user touches the first icon, and then displays the second icon on the second icon. By detecting that the user has touched, the first object to be heated corresponding to the first icon is selected as a heating target, and operates so that input of heating conditions can be performed,
    Further, the control device supplies a high-frequency current from the inverter circuit to the heating coil to heat the first object to be heated, and the first object to be heated is separated from the top plate by a user. The first icon is displayed again on the display screen based on the result of detection by the heated object placement determination unit of the first heated object after the movement, An induction heating cooker characterized by having an operation program that can apply the cooking condition executed before the movement to the cooking after the movement by operating the first icon.
20. The condition of cooking by the first object to be heated on the display screen when it is detected that the user has touched the first icon for the first object to be heated among the two first icons. After the second icon for selecting is displayed and the setting of the cooking condition is completed, the start of induction cooking for the first object to be heated is instructed from the input operation unit,
    The said control apparatus displays the said 2nd icon which selects the conditions of the heating cooking by a 2nd to-be-heated material in the state which does not display the 1st icon for said 1st to-be-heated material on the said display screen. The induction heating cooker according to claim 19.
21. 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 determination unit is activated, and the placement status of the heated object is displayed on the display screen. Display with the icon 1
    The induction heating cooker according to claim 19, wherein after the first icon is displayed, information that serves as a reference for touching the first icon by the voice guide device is notified by voice.
22. After the placement status of the object to be heated is displayed on the display screen by the first icon, the voice guide device informs information for guiding from a specific position on the display screen to the display position of the first icon. The induction heating cooker according to claim 19, wherein the induction heating cooker is used.
23. 23. The cooking device according to claim 19, wherein the controller displays a cooking mode icon that allows a driving pattern of the heating coil to be selected when the second icon is displayed on the display screen. The induction heating cooker according to item 1.
24. The control device displays an image diagram showing the number and arrangement of the heating coils to be driven at the stage of displaying the second icon on the display screen. The induction heating cooker of Claim 1.
25. The control device, at a stage of displaying the first icon on the display screen, displays at least one of information recommending touching the first icon or information indicating operational precautions as characters. The induction heating cooker according to any one of claims 19 to 22, characterized in that a guide area expressed by:
26. 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,
    The voice guidance device according to any one of claims 19 to 22, wherein, in the beginner mode, the user informs reference information for a touch operation on the first icon. Induction heating cooker.
27. The display screen is arranged closer to the front side than the front end of the heating area by the heating coil,
    26. The induction cooking device according to claim 25, wherein the first icon is always displayed on the near side of the display position of the guide area on the display screen.
28. The display screen is arranged closer to the front side than the front end of the heating area by the heating coil,
    The induction heating cooker according to claim 25, wherein the first icon and the second icon are always displayed in front of the display position of the guide area on the display screen.
29. The display screen is covered by the top plate,
    The coordinate detection electrode of the touch position of the first icon and the second icon is arranged on the surface of the top plate, according to any one of claims 19 to 22. Induction heating cooker.
30. On the display screen, a help mode key that is a fourth icon is displayed. When the help mode key is touched, the user who is in the stage of touching the first icon is to be heated. The induction heating cooker according to any one of claims 19 to 22, wherein information for supporting an operation of selecting an object is notified from the voice guide device.
31. An information key that is a fifth icon is displayed on the display screen, and when the information key is touched, a user who touches the second icon is notified of the heating coil. At least the heating coil driving pattern for each cooking mode in which the driving pattern can be selected, the heating cooking condition setting method for saving power consumption, the precautions when setting the heating power, and the safety precautions during cooking The induction heating cooker according to any one of claims 19 to 22, wherein information on any one of the information is notified from the voice guide device.
32. A main body having a top plate on which an object to be heated is placed;
    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 for determining whether or not an object to be heated is placed immediately above the heating coil;
    An input operation unit provided on the upper surface of the main body;
    A main power switch provided on the main body;
    A 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,
    The controller is configured to determine whether the object to be heated is determined to be in a state in which the object to be heated is mounted on the heating coil. Display the 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 has touched the first icon, and is heated. When an object is selected, it is detected that the user has touched the second icon, and heating conditions can be input.
    Further, 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 the user, The first icon is displayed again on the display screen based on the detection result of the heated object placement determination unit after the movement, and before the movement during the display period of the first icon. An induction heating cooker that displays an icon for selecting the application of the cooking condition that has been executed to the cooking after the movement.
33. The condition of cooking by the first object to be heated on the display screen when it is detected that the user has touched the first icon for the first object to be heated among the two first icons. After the second icon for selecting is displayed and the setting of the cooking condition is completed, the start of induction cooking for the first object to be heated is instructed from the input operation unit,
    The said control apparatus displays the said 2nd icon which selects the conditions of the heating cooking by a 2nd to-be-heated material in the state which does not display the 1st icon for said 1st to-be-heated material on the said display screen. The induction heating cooker according to claim 32, wherein:
34. 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 determination unit is activated, and the placement status of the heated object is displayed on the display screen. Display with the icon 1
    33. The induction heating cooker according to claim 32, wherein after the first icon is displayed, information that serves as a reference for touching the first icon by the voice guide device is notified by voice.
35. After the placement status of the object to be heated is displayed on the display screen by the first icon, the voice guide device informs 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 32, wherein:
36. 36. The cooking device according to any one of claims 32 to 35, wherein the controller displays a cooking mode icon capable of selecting a driving pattern of the heating coil at the stage of displaying the second icon on the display screen. The induction heating cooker according to item 1.
37. The control device displays an image diagram showing the number and arrangement of the heating coils to be driven at the stage of displaying the second icon on the display screen. The induction heating cooker of Claim 1.
38. The control device, at a stage of displaying the first icon on the display screen, displays at least one of information recommending touching the first icon or information indicating operational precautions as characters. The induction heating cooker according to any one of claims 32 to 35, characterized by displaying a guide area expressed by:
39. 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,
    The voice guidance device according to any one of claims 32 to 35, wherein, in the beginner mode, the user informs information that is helpful for a user to perform a touch operation on the first icon. Induction heating cooker.
40. The display screen is arranged closer to the front side than the front end of the heating area by the heating coil,
    The induction cooking device according to claim 38, wherein the first icon is always displayed on the near side of the display position of the guide area on the display screen.
41. The display screen is arranged closer to the front side than the front end of the heating area by the heating coil,
    The induction heating cooker according to claim 38, 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.
42. The display screen is covered by the top plate,
    36. The coordinate detection electrode of the touch position of the first icon and the second icon is disposed on the surface of the top plate. Induction heating cooker.
43. On the display screen, a help mode key that is a fourth icon is displayed. When the help mode key is touched, a user who is touching the first icon is instructed to be heated. The induction heating cooker according to any one of claims 32 to 35, wherein information for supporting an operation of selecting a heated object is notified from the voice guide device.
44. An information key that is a fifth icon is displayed on the display screen, and when the information key is touched, a user who touches the second icon is notified of the heating coil. At least the heating coil driving pattern for each cooking mode in which the driving pattern can be selected, the heating cooking condition setting method for saving power consumption, the precautions when setting the heating power, and the safety precautions during cooking The induction heating cooker according to any one of claims 32 to 35, wherein information on any one of the information is notified from the voice guide device.

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