JP3054842B2 - Induction heating cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker having display means.

[0002]

2. Description of the Related Art In recent years, induction heating cookers have been recognized for their excellent features of safety, cleanliness, and high efficiency, and have been widely used in ordinary households. The induction heating cooker has a structure in which a high-frequency current of several tens of KHz is applied to a heating coil spread in a spiral planar shape, thereby inductively heating a load pan magnetically coupled with the heating coil. Is generated by opening and closing the switching means in the induction heating section. In addition, the display means such as the operation mode of the equipment is usually arranged on the front side of the equipment together with the input means. However, as shown in Japanese Patent Application Laid-Open No. 3-114182 and Japanese Utility Model Application Laid-Open No. Is known, and an indicator light that emits light is arranged under the light-transmitting device.

[0003] A conventional induction heating cooker will be described below with reference to Figs. FIG. 19 is a block diagram of a conventional induction heating cooker. In FIG. 19, 1 is an AC power supply, 2 is a power switch, 3 is an induction heating unit, and a rectifier 10, a heating coil 11, a switching means 1
2. It is composed of an inverter circuit 13.

In the control section 4, the induction heating section control means 14 controls the opening and closing of the switching means 12, and controls the conduction time of the switching means 12 to control the current applied to the heating coil 11. Further, the induction heating unit control means 14 indirectly detects the temperature of the article 9 to be cooked in the load pan 7 based on the input signal from the temperature sensing element 6, and further detects the inverter circuit 13, the temperature sensing element 6, and the like. When an abnormality is detected, measures such as stopping the output of the induction heating unit 3 are taken.

In the operation unit 5, when the power switch 2 is turned on, the mode control means 26 stops heating, the heating state by the constant output of the induction heating unit 3, the temperature detected by the temperature sensing element 6 and the set temperature. It has a plurality of device operation modes such as an automatic temperature control state for automatically adjusting the output of the induction heating unit 3 according to the relationship, and a plurality of setting outputs for each operation mode or settings relating to device operation such as temperature. The setting is changed based on the input signal from the base station 31.

The control unit 4 and the operation unit 5 are provided with a first modulating unit 15, a first demodulating unit 16, and a second modulating unit 2, respectively.
7 and a second demodulation means 28. In the control unit 4, the first modulation unit 15 converts an input signal relating to an abnormal state of the induction heating unit 3 or the like input from the induction heating unit control unit 14 into a digital signal of a predetermined digit, and
8, the first demodulation unit 16 reconverts the input signal from the second modulation unit 27 into a signal indicating the setting of the device operation mode and the like, and outputs the signal to the induction heating unit control unit 14. In the operation unit 5, the second modulation unit 27 converts an input signal relating to setting of the device operation mode and the like input from the mode control unit 26 into a digital signal of a predetermined digit, and serially transmits the digital signal to the first demodulation unit 16. Then, the second demodulation unit 28 reconverts the input signal from the first modulation unit 15 into a signal indicating an abnormal state of the induction heating unit 3 and the like, and outputs the signal to the mode control unit 26. As described above, the control unit 4 and the operation unit 5 exchange a plurality of pieces of information possessed by the control unit 4 and the operation unit 5 with a minimum number of wires using the modulation unit and the demodulation unit.

The operation section 5 has a display control means 29. The display control unit 29 creates a display signal based on an input signal regarding the setting of the device operation mode and the like from the mode control unit 26 and an abnormal state of the induction heating unit 3 and the like, and outputs the display signal to the display unit 30. .

FIG. 20 is an external view of a conventional induction heating cooker. Normally, in a stationary induction heating cooker, the top plate 8 is used as the upper surface of the device, and the input means 31 composed of a tact switch or the like is installed on the side facing the user of the device. Then, the display means 30 is shown in FIG.
As shown in FIG.
It is arranged near the input means 31 as shown in FIG. The vicinity of the top plate 8 is a position that is easy to see when cooking by operating the load pan 7, and the vicinity of the input means 31 is a position that is easy to see when operating the input means 31 to change settings such as the device operation mode. It is.

With reference to FIG. 21, the operation of the display of the induction heating cooker having the above-described configuration will be described. FIG. 21 is a flowchart showing the operation of the display control means 29 in the operation unit 5. As shown in FIG.
In step 91, the display control means 29
, A signal relating to the setting of the equipment operation mode and the like and the abnormal state of the induction heating unit 3 and the like are input. And step 92
If the abnormal state of the induction heating unit 3 or the like is not detected in step 93, a display signal based on the device operation mode, the set output or the temperature is created in step 93, and if the abnormal state of the induction heating unit 3 or the like is detected In step 94, a display signal based on the abnormal state having the highest priority is created. Then, in step 95, the display signal is output to the display means 30, and
Notify the user of the equipment of the presence of the abnormal condition and urge the user to stop the heating. Each of the abnormal states is given a priority order based on the degree of danger at the time of occurrence. If a plurality of abnormal states occur simultaneously, a display signal indicating an abnormal state having a higher priority is output to the display means 30.

[0010]

However, in the above-mentioned conventional configuration, since the top plate 8 and the input means 31 are arranged at a distance from each other, when the display means 30 is arranged near the top plate 8, the input means is not provided. In order to confirm that the setting change of the device operation mode and the like has been reliably performed when operating the means 31, it is necessary to shift the line of sight one by one, and the operability is poor. Similarly, when the display means 30 is arranged in the vicinity of the input means 31, when the object 9 is cooked and the line of sight is on the load pan 7, the setting of the appliance operation mode and the like is confirmed on the display means 30. Is also a tedious task.

Further, since there is no display means controlled by the control unit 4, it is impossible to directly know the setting of the device operation mode and the like in the control unit 4, and the second modulation means 27 and the first demodulation means 16 The above settings are transmitted from the operation unit 5 to the control unit 4 via the
It is not easy to confirm that the information is accurately transmitted.

Further, when an abnormal condition occurs in the induction heating section 3 or the like, the abnormal condition is displayed on the display means 30 preferentially. It becomes impossible to know whether the setting has been made, and the setting change by the input means 31 must be prohibited, and the operability is not good.

Further, in the conventional configuration, there is no display means for displaying the temperature detected by the temperature sensing element 6, and the temperature of the food 9 in the load pan 7 cannot be directly known. Has a problem that the temperature of the oil in the load pan 7 is not known, and it is difficult to determine when to put the tempura into the oil and to cook.

The present invention solves the above-mentioned conventional problems, and confirms the above-mentioned setting or abnormal state both when changing the setting of the appliance operation mode and the like and when cooking by operating the pan. Easy to use, and 2
By comparing the two display means, it is possible to determine whether communication is reliably performed between the control unit and the operation unit,
Furthermore, it has been proposed that a plurality of contents can be displayed on the same display unit so that the display unit can be saved in space and more information can be obtained according to the will of the user of the device. This is the purpose of 1.

[0015] In addition to the first object, when a predetermined time elapses after an arbitrary display mode is selected and desired information is obtained, the display mode is automatically changed to the initial display mode and set again to the initial display mode. A second object is to improve operability by eliminating the need for repair.

Further, in addition to the second object, a third object is to improve the operability by continuing the selected display mode while changing the settings such as the device operation mode.

Further, in addition to the first object, a fourth object is to reduce the amount of signals from the control unit to the operation unit and to simplify the configurations of the modulation unit of the control unit and the demodulation unit of the operation unit. .

Further, in addition to the fourth object, when a predetermined time elapses after selecting an arbitrary display mode and obtaining desired information, the control unit automatically changes the display mode to the initial display mode, A fifth object is to eliminate the trouble of inputting a signal for changing the display mode.

Further, in addition to the fourth object, a sixth object is to reduce the number of wires between the control unit and the operation unit to simplify the configuration of the device.

Further, in addition to the sixth object, when a predetermined time elapses after an arbitrary display mode is selected and desired information is obtained, the control unit automatically changes the display mode to the initial display mode and sends a signal from the operation unit. A seventh object is to save the trouble of inputting.

[0021]

In order to achieve the first object, an induction heating cooker according to the present invention comprises an induction heating section including a heating coil and switching means, and an induction heating section for controlling the induction heating section. A control unit including a control unit, a first modulation unit that modulates the control signal, and a first demodulation unit that demodulates the control signal; and an input unit and a device operation mode, a setting output, and the like according to a signal from the input unit. An operation unit including mode control means for changing or maintaining the setting relating to the operation state of the device, second modulation means for modulating a control signal, and second demodulation means for demodulating the control signal; A first display control unit that generates a display signal based on an input signal from the heating unit control unit and outputs the display signal to the first display unit; A display signal is generated based on an input signal from the display mode setting means for inputting a signal for selecting a specific display mode from the display mode and an input signal from the mode control means, and is output to the second display means. A configuration provided with a display control means is a first problem solving means.

Further, in order to achieve a second object, the operation unit includes timer means, and the timer means causes the second display control means to display the display mode of the second display means after a predetermined time count is completed. Is changed to a predetermined mode, and the counter is initialized or the count operation is started based on an input signal from the second display control means or the display mode setting means. Means to solve the problem.

In order to achieve the third object, a third means for solving the problem is that the timer means initializes a counter based on an input signal from the input means.

Further, in order to achieve a fourth object, an induction heating section including a heating coil and switching means,
A control unit including an induction heating unit control unit for controlling the induction heating unit, a first modulation unit for modulating a control signal, and a first demodulation unit for demodulating the control signal; an input unit; and a signal from the input unit. An operation including mode control means for changing or maintaining control of the equipment operation state such as equipment operation mode and setting output in response thereto, second modulation means for modulating a control signal, and second demodulation means for demodulating the control signal A second display control unit that generates a display signal based on an input signal from the mode control unit and outputs the display signal to a second display unit, and a specific display from a plurality of display modes. A display mode setting unit for inputting a signal for selecting a mode, wherein the control unit displays a table based on input signals from the display mode setting unit and the induction heating unit control unit. Those where the structure comprises a first display control means for outputting to the first display means to create a signal are the fourth means for solving problems.

Further, in order to achieve a fifth object, the control unit includes timer means, and the timer means causes the first display control means to display the display mode of the first display means after a predetermined time has elapsed. Is changed to a predetermined mode, and the counter is initialized or the count operation is started based on an input signal from the first display control means or the display mode setting means. Means to solve the problem.

Further, in order to achieve a sixth object, an induction heating section including a heating coil and switching means,
A control unit including an induction heating unit control unit for controlling the induction heating unit, a first modulation unit for modulating a control signal, and a first demodulation unit for demodulating the control signal; an input unit; and a signal from the input unit. An operation including mode control means for changing or maintaining control of the equipment operation state such as equipment operation mode and setting output in response thereto, second modulation means for modulating a control signal, and second demodulation means for demodulating the control signal A second display control unit that generates a display signal based on an input signal from the mode control unit and outputs the display signal to a second display unit, and a specific display from a plurality of display modes. Display mode setting means for inputting a signal for selecting a mode, wherein the second modulating means includes an operation mode setting signal corresponding to the setting of a device operation mode, and The display mode change signal input from the mode setting means is converted into a digital signal of a predetermined digit and serially output to the first demodulation means, wherein the control section comprises a plurality of the first demodulation means and the induction heating section control means. And a first display control means for generating a display signal based on an input signal from the first display means and outputting the display signal to a first display means, wherein the first demodulation means converts the input signal from the second modulation means to the first display means. The operation mode setting signal or the display mode change signal is converted again, and the operation mode setting signal is output to the induction heating unit control means, and the display mode change signal is output to the first display control means. This is the sixth means for solving the problem.

Further, in order to achieve a seventh object, the control unit includes timer means, and the timer means causes the first display control means to display the display mode of the first display means after a predetermined time count is completed. Output a signal to change to a predetermined mode, and initializes a counter or starts a count operation based on an input signal from the first display control means or the first demodulation means. 7 means for solving the problem.

[0028]

According to the present invention, in the first means for solving the above problems,
Since the control unit and the operation unit each include a modulation unit and a demodulation unit, transmission and reception by serial signals can be performed in the case of wired communication, and the number of signal lines connecting the control unit and the operation unit can be significantly reduced. Further, since the first display means for performing display based on the signal in the control unit and the second display means for performing display based on the signal in the operation unit are provided, the wiring to each display means can be shortened. In addition, the setting of the device operation mode or the like or the display of the abnormal state of the induction heating section or the like can be performed almost simultaneously in different places. For example, when the first display means is arranged near the top plate on the upper surface of the main body in which the induction heating unit and the control unit are housed, and the second display means is arranged near the input means, the respective display means are arranged as described above. Can be shortened, and when cooking using the pan,
The user can easily check the settings such as the device operation mode by looking at the first display means located near the top plate. When the setting is changed by operating the input means, the position near the input means is changed. It is possible to easily confirm that the setting change has been performed reliably without changing the line of sight each time by looking at the second display means.

Further, by comparing the display contents of the first display means and the display contents of the second display means, it is ensured that the setting of the equipment operation mode and the like is correctly transmitted from the operation section to the control section via communication, and that the induction heating section and the like are provided. It can be confirmed that the communication is reliably performed by seeing that the abnormal state of the device is correctly transmitted from the control unit to the operation unit.

Further, the operation section creates a display signal based on an input signal from the display mode setting means for inputting a signal for selecting a specific display mode from among a plurality of display modes, and an input signal from the mode control means. Since the second display control means for outputting to the second display means is provided, a user of the device operates the display mode setting means to select a necessary one from a plurality of display modes. Various information can be obtained.

That is, as a mode that can be displayed on the second display means, regardless of the presence or absence of an abnormal state of the induction heating unit or the like,
When a mode for displaying settings such as the device operation mode set by the input unit is provided, when an abnormal state occurs in the induction heating unit or the like, the first display unit displays the abnormal state and displays the device. While indicating the existence of the abnormal state to the user, the second display means can select the mode for performing the setting display described above and know the device operation mode before the abnormal state occurs, and the like. And, when the input means is operated to change the settings such as the device operation mode, it is possible to confirm that the settings have been surely changed, and according to the latest settings when the abnormal state is resolved. The operation of the device can be resumed.

Further, when the temperature of the food in the load pan detected by the temperature sensing element is transmitted from the control unit to the operation unit via the first modulation unit and the second demodulation unit, A mode for displaying the temperature of the object to be cooked is provided, and the temperature can be displayed on the second display means.

Further, in the second problem solving means, when the display mode is changed to a mode other than the initial display mode by operating the display mode setting means, the timer counter of the timer means is initialized and the counting operation is started. Then, the timer means outputs a signal for changing the display mode of the second display means to the initial display mode to the second display control means after counting a predetermined time, and inputs this signal to the second display control means. Since the display control means automatically changes the display mode of the second display means to the initial display mode, even if the display mode is changed from the initial display mode to another display mode, the display control means automatically changes the initial display mode after a lapse of a predetermined time. Display mode can be returned. That is, when the mode for displaying the same content as that of the first display means is set as the initial display mode, it is usually necessary to provide information in a location that is optimal for the situation of the person using the device in the initial display mode. While realizing the effect, the display mode setting means is operated according to the will of the user of the device, the display mode of the second display means is changed from the initial display mode to another display mode, and various information can be obtained. Since the display mode can be obtained and automatically returns to the initial display mode after obtaining the information, the display mode setting means is operated again to change the display mode of the second display means to the initial display mode. You can save time and effort.

Further, in the third problem solving means, when a mode for displaying a setting such as a device operation mode set by the input means is selected as a display mode of the second display means, an input from the input means is made. Since the timer means initializes the timer counter based on the signal, it is possible to prevent the display mode from being changed while operating the input means and changing the setting such as the device operation mode. When a predetermined time elapses after the setting change ends, the timer means stops counting and can automatically return to the initial display mode.

Further, in the fourth problem solving means, a display signal is created based on the input signals from the display mode setting means of the operation section and the induction heating section control means, and the first signal is outputted to the first display means. Since the display control means is provided in the control unit, the person using the device operates the display mode setting means in the operation unit to select necessary information from the plurality of pieces of information of the control unit and perform the first operation. It can be displayed on the display means. Therefore, it is not necessary to transmit information of the control unit from the control unit to the operation unit via the first modulation unit and the second demodulation unit, and a large amount of data communication can be eliminated to simplify the configuration of the device. it can.

Further, in the fifth problem solving means, a timer means is provided in the control unit, and the timer means changes the first display control means from the initial display mode based on an input signal from the display mode setting means. After a predetermined time after changing to the display mode, a signal for changing the display mode to the initial display mode is output, and the first display control means changes the display mode to the initial display mode by inputting this signal. The first modulation means and the second modulation means
The amount of signals transmitted from the control unit to the operation unit via the demodulation unit is reduced, and when the display mode is changed by an input signal from the operation unit, there is no need to input a signal from the operation unit again. After a lapse of a predetermined time, the display mode can be automatically returned to the predetermined display mode.

Further, in the sixth problem solving means, the display mode selected by the display mode setting means in the operation section is converted into a digital signal of a predetermined digit by the second modulation means in the operation section, and the first modulation means converts the display mode into the first digit. and serial output to the demodulation means,
The first demodulation means in the control section receives this signal, converts it again into a signal indicating the original display mode, and outputs it to the first display control means. Therefore, the display mode setting means and the control section in the operation section , The dedicated wiring for signal transmission and reception of the first display control means can be eliminated to simplify the configuration of the device.

Further, in the seventh problem solving means, the timer means in the control section causes the first display control means to switch from the initial display mode to another display mode based on an input signal from the first demodulation means. After the changed predetermined time, a signal for changing the display mode to the initial display mode is output, and the first display control means automatically changes the display mode to the initial display mode by inputting this signal. Therefore, it is possible to reduce the number of wires connecting the control unit and the operation unit to simplify the configuration of the device, and to save the trouble of operating the display mode setting means of the operation unit to change the display mode to the initial display mode again. it can.

[0039]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

FIG. 1 is a block diagram showing an induction heating cooker according to a first embodiment of the present invention. In the present embodiment, members having the same functions as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted. This embodiment is characterized in that the first display control unit 17 is provided in the conventional control unit 4 shown in FIG.
And a display mode setting unit 32 is newly provided in the first display unit 18 and the operation unit 5, and the operation unit 5 provided in the conventional configuration is provided.
Display means 30 as second display means 33 and display control means 2
9 is a second display control means 34, and the second display control means 34 preferentially displays an abnormal state of the induction heating unit 3 or the like, regardless of the presence or absence of the abnormal state.
Display mode setting means 3 having two display modes of a setting priority mode for displaying settings such as a device operation mode;
The two display modes are switched on the basis of the input signal from the second and the display signal according to the currently selected display mode is created based on the input signal from the mode control means 26, and the second display mode is generated. Is output to the display means 33.

FIG. 2 is an external view of the induction heating cooker according to the first embodiment. As shown in FIG. 2, the first display means 18 is arranged near the top plate 8,
The second display means 33 is arranged near the input means 31. Further, the display mode setting means 32 is arranged near the input means 31.

The operation of the induction cooking device configured as described above will be described with reference to FIGS. 3 and 4.
First, the display operation of the two display units will be described. After the user of the device turns on the power switch 2 and selects a heating mode in which the induction heating unit 3 performs a constant output using the input unit 31, the mode control unit 26 of the operation unit 5 sets the device operation mode. To the heating mode and the second
Display control means 34 inputs a signal corresponding to the heating mode from the mode control means 26 to create a display signal indicating the heating mode, and outputs the display signal to the second display means 33 to display the second display means At 33, the display of the heating mode is performed.

In the operation section 5, the second modulation means 27 converts the input signal indicating the heating mode from the mode control means 26 into a digital signal of a predetermined digit and serially outputs the digital signal. The signal is input to the first demodulation unit 16, reconverted into a signal indicating the original heating mode, and output to the induction heating unit control unit 14. And the induction heating section control means 1
4 controls the induction heating unit 3 in accordance with the heating mode signal, and outputs a signal based on the heating mode signal to the first display control means 17. Based on this signal, the first display control means 17 controls the heating mode. Is generated and output to the first display means 18, and the first display means 18 displays the heating mode.

As described above, the heating mode is displayed on both the first display means 18 near the top plate 8 and the second display means 33 near the input means 31, so that the food 9 is placed on the load pan 7. When cooking such as throwing in, the viewpoint is placed above the device and the load pan 7 is viewed, so that the operation state of the device can be checked at a glance by the first display means 18 without moving the line of sight each time. . Also, when operating the input means 31, the device is viewed from the front of the input means 31, so that the operation state of the device and the like can be confirmed without shifting the line of sight by the second display means 33 arranged in the vicinity. be able to.

Further, the first display means 18 displays the setting of the equipment operation mode and the like in the control section 4 or the abnormal state of the induction heating section 3 and the like.
Since 3 performs an indication as to such abnormal conditions, such as setting or induction heating unit 3, such as equipment operation mode in the operation unit 5, the operation unit and the control unit 4 by comparing the display contents of the two display means 5 It can be easily determined whether or not communication is normally performed between the devices, and when there is an abnormality in communication, it is possible to urge a person who uses the device to take measures.

Next, two display modes provided on the operation unit 5 will be described. FIG. 3 is a flowchart showing the operation of the second display control means 34. Second display control means 3
Reference numeral 4 has two display modes: an abnormal priority mode in which an abnormal state of the induction heating unit 3 or the like is preferentially displayed, and a setting priority mode in which settings such as a device operation mode are displayed regardless of the presence or absence of the abnormal state. . Then, as shown in FIG. 3, when the power switch 2 is connected and the AC power 1 is applied to the device, the second display control means 34 starts operating. First, in step 1, the abnormal priority mode is selected as an initial mode from the two display modes. Next, in step 2, switching control between the two display modes is performed based on the input signal from the display mode setting means 32, and in step 3, the device operation mode, the setting output or the setting temperature, the induction heating unit 3 After inputting a signal relating to an abnormal state, such as, for example, a display signal is created based on the input signal from the mode control means 26 in accordance with the display mode selected in step 4, and the display signal is sent to the second display means 33 in step 5. Is output.

FIG. 4 is a flowchart showing a method of selecting a display mode in the second display control means 34. The display mode setting means 32 is composed of a tact switch, a lever switch, and the like. In the case of a tact switch, an "L" signal is normally output when the switch is pressed, and an "H" signal is output. Outputs an "H" or "L" signal depending on the setting position of the lever unit.
In the first embodiment, a tact switch is used for the display mode setting unit 32. As shown in FIG. 4, the second display control means 34 sets the display mode setting means 3 in step 11.
When an "H" signal having a predetermined time width or more from 2 is input, this signal is determined as a signal for switching the display mode in step 12, and in step 13, the mode is switched from the abnormal priority mode to the setting priority mode or from the setting priority mode. Change the display mode to the abnormal priority mode.

It should be noted that the reason why the "H" input signal from the display mode setting means 32 is given a predetermined time width is that the instantaneous "H" input due to the influence of noise from the surroundings is input to the second display mode control means 34. Is to prevent erroneous detection as the display mode switching signal, and this time width should be determined in consideration of the surrounding environment.

The display according to the display mode selected by the method shown in FIG. 4 will be described with reference to FIG. First, the first display means 18 in the control unit 4 gives priority to the display of the abnormal state when an abnormal state of the induction heating unit 3 or the like occurs, and the operation unit when the abnormal state does not occur. The display relating to the setting of the device operation mode and the like obtained by the input signal from 5 is performed.

The second display means 33 in the operation unit 5 converts the input signal from the second display control means 34, that is, the input signal from the mode control means 26 in accordance with the display mode selected by the display mode setting means 32. Display based on

First, when the display mode setting unit 32 selects the abnormality priority mode, the second display control unit 34 determines that an abnormality has occurred in the induction heating unit 3 or the like based on an input signal from the mode control unit 26. Is detected, the abnormal state is displayed, and when the abnormal state does not occur, the display related to the setting of the device operation mode or the like is performed.

When the setting priority mode is selected by the display mode setting means 32, the second display control means 34 outputs a display signal to the second display means 33 regardless of the presence or absence of the abnormal state. To display settings such as the device operation mode. Therefore, when the second display control means 34 detects that an abnormality has occurred in the induction heating unit 3 or the like based on an input signal from the mode control means 26, the first display means 18 responds to the abnormal state. Although the display is performed, the second display unit 33 still displays the setting, so that the user can know the setting state such as the device operation mode by looking at the second display unit 33.

Further, when the setting is changed using the input means 31 regardless of the presence or absence of the abnormality,
The change in the setting can be reliably confirmed on the second display means 33, and the operation of the device can be restarted with the latest setting after the abnormality is resolved.

As described above, the same display can be performed at different places without increasing the number of signal lines, so that the setting contents can be easily checked at the time of adjusting the heating power or operating the pot, and the control unit 4 and the operation unit It is possible to easily confirm whether there is an abnormality in the communication between the five communication devices.

Further, in some cases, different displays can be performed in different places, and a plurality of pieces of information can be displayed at the same time, and further, it is possible to select and display a plurality of pieces of information. .

In this embodiment, the second display control means 3
The display mode setting means 32 is newly provided as a means for generating a display mode switching signal for selecting a plurality of display modes provided in the display device 4. However, a predetermined operation can be performed by using a switch constituting the existing input means 31. By doing so, it is clear that the display mode switching signal can be generated. In addition, the display mode setting means 32 is arranged at a place where a person using the device can operate the display mode setting means 32.
A manufacturer who arranges the device inside the device and manufactures the device can also set in advance.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a block diagram showing an induction heating cooker according to a second embodiment of the present invention. The difference from the first embodiment is that the operation unit 5 initializes the counter, starts the count operation or stops the count operation based on the input signal from the second display control means 35, and sets a predetermined time. Timer means 36 for outputting a signal for changing the display mode to the initial display mode to the second display control means 35 after the counting is completed, and the second display control means 35 receives the input signal from the display mode setting means 32 Timer means 3 based on
Control the start or stop of the count operation of 6, and
The display mode is changed to an initial display mode based on an input signal from the timer means 36.

In the first embodiment, the induction heating unit 3
Display mode setting means 3 when an abnormal condition such as
2, the user selects the setting priority mode, confirms the settings such as the device operation mode while looking at the second display means 33, and then sets the display mode to the abnormal priority mode to display the contents of the two display means. To return to the same environment, the display mode must be changed again using the display mode setting means 32.

This embodiment eliminates such labor and further improves operability. The operation of the induction heating cooker constructed as described above will be described with reference to FIGS. 6, 7 and 8. Will be described. FIG. 6 shows the second display control means 35.
6 is a flowchart showing the operation of the first embodiment. As shown in FIG. 6, when the power switch 2 is connected and the AC power supply 1 is applied to the device, the second display control means 35 starts operating. First, in step 21, the abnormal priority mode is selected as an initial display mode from the two display modes.
To control the timer means 36 to stop the counting operation. Next, at step 23, the display mode setting means 32
The control of switching between the two display modes and the operation of the timer means 36 are performed on the basis of the input signal from the controller 30. After inputting a signal related to the display mode, a display signal is created based on the input signal from the mode control means 26 in accordance with the display mode selected in step 25, and the display signal is output to the second display means 33 in step 26.

FIG. 7 is a flowchart showing a method of selecting a display mode and controlling the timer means 36. As shown in FIG. 7, when the second display control means 35 inputs an "H" signal having a predetermined time width or more from the display mode setting means 32 in step 31, the second display control means 35 converts this signal to display mode switching in step 32. Is determined, and step 33
To change the display mode from the abnormal priority mode to the setting priority mode or from the setting priority mode to the abnormality priority mode. When the mode is changed from the abnormal priority mode to the setting priority mode, control is performed in step 34 so that the timer means 36 initializes the counter to start the counting operation. When changing from the setting priority mode to the abnormal priority mode, In step 35, the timer means 36 also controls so as to stop the counting operation.

FIG. 8 is a flowchart showing the operation of the timer means 36. As shown in FIG.
6 receives a signal related to the start of operation from the second display control means 35 in step 41, initializes a counter in step 42, and starts a count operation. As a method of the counting operation, a loop process in which a predetermined time elapses in one process is provided, and the value of the counter is increased by one during this process. Then, the configuration is such that it is determined that the desired time has elapsed when the value of the counter exceeds a predetermined value or when the carry of the counter occurs.

Further, an operation of detecting an input signal from the second display control means 35 is also performed during the loop processing.
In step 43, when the timer unit 36 inputs a signal regarding the operation stop from the second display control unit 35 during the count operation, the timer unit 36 immediately ends the count operation in step 44, and the second display control unit 35 Waits for the input of the operation start signal.

When the timer means 36 determines that the value of the counter exceeds a predetermined value or that the desired time has elapsed due to the occurrence of a carry in the counter , the counting operation is immediately stopped in step 45 and the counting operation is stopped. 2
A signal for changing the display mode to the initial display mode is output to the display control means 35, and then the operation waits for the input of an operation start signal from the second display control means 35. Upon input of this signal, the second display control means 35 automatically changes the display mode to the abnormal priority mode as shown in FIG.

As described above, in this embodiment, in addition to the effect of the first embodiment, when the setting change by the display mode setting means 32 is completed, the display mode automatically returns to the initial display mode after a predetermined time. The trouble of returning the display mode using the display mode setting means 32 can be omitted.

In this embodiment, the second display control means 3
Although the timer means 36 performs count control such as initialization of the counter based on the input signal from the control unit 5, the same effect can be obtained by performing the count control based on the input signal from the display mode setting means 32. Can be.

The count operation is stopped when the display mode is changed from the setting priority mode to the abnormal priority mode. However, if only the counter is initialized without stopping the count operation, the above-described specification is obtained. It is possible to simplify the configuration of the second display control means 35 and the timer means 36 by omitting the count stop operation while being satisfied.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIGS. FIG. 9 is a block diagram showing an induction heating cooker according to a third embodiment of the present invention. The difference from the second embodiment is that the timer unit 37 initializes the counter based on an input signal from the input unit 31 in addition to the second display control unit 35.

In the second embodiment, the induction heating unit 3
When an abnormality occurs in the second display means 33 in the abnormality priority mode and the display relating to the abnormal state is performed, the display mode setting means 32 is operated to change the display mode to the setting priority mode. When the setting display of the device operation mode or the like is performed by the display means 33, the input means 31 is operated after a lapse of a predetermined time after the display mode is changed by the display mode setting means 32 to change the setting. Since the display mode returns to the original abnormal priority mode even during the operation, the setting change must be completed within the duration of the setting priority mode.

The present embodiment is to improve such a point. The operation of the induction heating cooker configured as described above will be described with reference to FIG. FIG. 10 is a flowchart showing the operation of the timer means 37. FIG.
As shown by 0, when the timer means 37 inputs a signal from the input means 31 while performing the count operation in step 51, the timer means 37 initializes the counter in step 52 and restarts the count operation from the beginning. Therefore, even if the display mode is changed from the initial display mode, ie, the abnormal priority mode to the setting priority mode, by operating the display mode setting means 32, if the input means 31 is operated before the predetermined time elapses, the timer means 37 becomes Since the counting operation is restarted from the beginning, there is no possibility that the timer means 37 outputs a signal for changing the display mode to the abnormal display priority mode which is the initial display mode while the input means 31 is being operated. The display control means 35 can continue the setting priority mode. Then, in step 53, when the timer means 37 has counted a predetermined number of times since the last signal input from the input means 31, a signal for changing the display mode to the abnormal priority mode is sent in step 54 to the second display control means 35.
To the second display control means 35
Automatically changes the display mode to the abnormal priority mode.

As described above, in this embodiment, in addition to the effects of the second embodiment, the timer means 37 initializes the timer counter based on the input signal from the input means 31. A mode in which the display mode setting means 32 is operated when an abnormality occurs in the second display means 33 to display the setting such as the device operation mode set by the input means 31 regardless of the presence or absence of the abnormality. When is selected, the inconvenience that the display mode shifts to the initial display mode while operating the input means 31 to change the setting such as the device operation mode can be eliminated.

(Embodiment 4) A fourth embodiment of the present invention will be described below with reference to FIGS.
FIG. 11 is a block diagram showing an induction heating cooker according to a fourth embodiment of the present invention. The difference from the conventional example shown in FIG. 19 is that a display mode setting means 32 is newly provided in the operation unit 5 and the display control means is changed to the second display control means 34.
The display means is a second display means 33, and a first display control means 19 and a first display means 18 are newly provided in the control unit 4, and the first display control means 19 displays settings such as a device operation mode. And a temperature display mode for displaying a temperature detected by the temperature sensing element 6. The display mode is switched between the two display modes based on an input signal from the display mode setting means 32. ,And,
That is, based on an input signal from the induction heating section control means 14, a display signal according to the currently selected display mode is created and output to the first display means 18.

In the first embodiment, when a mode for displaying the temperature detected by the temperature sensing element 6 is provided and the temperature is displayed on the operation section 5, the induction heating section control means 14 of the control section 4
Needs to be transmitted from the control unit 4 to the operation unit 5 via the first modulation unit 15 and the second demodulation unit 28. In this case, for example, if the display temperature is limited from 44 ° C. to 300 ° C. (256 deg), an 8-bit signal is required for transmitting the temperature, and the control unit 4 sends the operation unit 5
The signal to be output to is increased.

The present embodiment is to improve such a point, and the operation of the induction heating cooker configured as described above will be described with reference to FIG. FIG. 12 is a flowchart showing the operation of the first display control means 19. As shown in FIG. 12, the first display control means 19 has a setting display mode and a temperature display mode, and based on the input signal from the display mode setting means 32 as described in the first embodiment, The two display modes are switched, and a display signal is created based on an input signal from the induction heating unit control means 14 in the following manner.

First, when an abnormality occurs in the induction heating section 3 or the like, the abnormal state is displayed in step 61 regardless of the display mode selected by the display mode setting means 32. When there is no abnormality in the induction heating unit 3 or the like, a display signal is created according to the display mode selected by the display mode setting unit 32. That is, when the setting display mode is selected, a display signal is created based on the input signal indicating the setting of the device operation mode and the like received from the operation unit 5 in step 62, and when the temperature display mode is selected, In step 63, a display signal is created based on the input signal indicating the temperature detected by the temperature sensing element 6. Then, in step 64, the display signal created in the manner described above is output to the first display means 18, and the first display means 18 sets the operation mode of the device, detects the temperature of the temperature-sensitive element 6, or detects the induction heating. An abnormal state of the unit 3 and the like is displayed.

As described above, using the display mode setting means 32 in the operation unit 5 allows the device using the device to select a necessary one from the plurality of display modes in the control unit 4. . That is, when a mode for displaying the temperature of the food 9 in the load pan 7 is provided, the first display control unit 1 is controlled based on an input signal from the display mode setting unit 32.
9 displays the temperature detected by the temperature-sensitive element 6, thereby eliminating the trouble of transmitting the temperature information from the control unit 4 to the operation unit 5 via the first modulation unit 15 and the second demodulation unit 28, A large amount of data communication can be eliminated while realizing the temperature display of the food 9 in the load pan 7, and the configuration of the device can be simplified.

(Embodiment 5) Hereinafter, a fifth embodiment of the present invention will be described with reference to FIGS.
FIG. 13 is a block diagram showing an induction heating cooker according to a fifth embodiment of the present invention. The difference from the fourth embodiment is that the control unit 4 initializes a counter, starts a count operation or stops a count operation based on an input signal from the first display control means 20, and counts for a predetermined time. A timer means 21 for outputting a signal for changing the display mode to the initial display mode to the first display control means 20 later is provided, and the first display control means 20 receives a signal based on an input signal from the display mode setting means 32. Thus, the start or stop of the counting operation of the timer means 21 is controlled, and the display mode is changed to the initial display mode based on the input signal from the timer means 21.

In the fourth embodiment, after the temperature display mode is selected by using the display mode setting means 32 and the temperature detected by the temperature sensing element 6 is displayed on the first display means 18, the display mode is set. In order to return to an environment in which the display contents of the two display means are the same in the setting display mode, the display mode must be changed again using the display mode setting means.

The present embodiment is to improve such a point, and the operation of the induction heating cooker configured as described above will be described with reference to FIG. FIG. 14 is a flowchart showing the operation of the first display control means 20. As shown in FIG. 14, when the power switch 2 is connected and the AC power supply 1 is applied to the device, the first display control means 20 starts operating. First, at step 71, the setting display mode is selected as an initial display mode from the two display modes of the setting display mode and the temperature display mode. At step 72, the timer 21 is controlled so as to stop the counting operation.
Next, in step 73, switching control between the two display modes and operation control of the timer means 21 are performed based on the input signal from the display mode setting means 32, and in step 74, the equipment operation mode and setting are set by the induction heating unit control means 14. After inputting a signal relating to the output or set temperature, the temperature detected by the temperature sensing element 6, and the abnormal state of the induction heating unit 3, etc., based on the input signal from the induction heating unit control means 14 according to the display mode selected in step 75. In step 76, the display signal is output to the first display means 18.

The operation of the timer means 21 is the same as that of the timer means 36 described in the second embodiment, when the count operation start signal is input from the first display control means 20, the timer counter is initialized and the count operation is started. When it is determined that the desired time has elapsed since the counter value exceeds a predetermined value or the counter generates a carry, the counting operation is immediately stopped and the first display control means 20 displays the display mode. Is output to change the display mode to the initial display mode, and thereafter, the operation waits for an input of an operation start signal from the first display control means 20. When the count operation stop signal is input from the first display control means 20, the count operation is immediately terminated, and the operation is again in a state of waiting for the input of the operation start signal.

When the setting of the device operation mode and the like is being displayed on the first display means 18, the display mode setting means 3
2, the first display control means 20 changes the display mode from the setting display mode to the temperature display mode on the basis of the input signal from the display mode setting means 32 and performs the first display control. The temperature detected by the temperature sensing element 6 is displayed on the display means 18, and a signal for starting the counting operation is output to the timer means 21.

After a lapse of a predetermined time, the timer means 2
1 outputs a signal indicating that the display mode is to be changed to the setting display mode, which is the initial display mode, and the first display control means 20 changes the display mode to the setting display mode by inputting this signal. The first display means 18 displays settings such as a device operation mode. If the setting display mode is selected using the display mode setting means 32 while the first display means 18 is performing temperature display, the first display control means 20 changes the display mode to the setting display mode. Then, the first display means 18 displays the setting, and outputs a signal for stopping the counting operation to the timer means 21 to terminate the counting operation of the timer means 21.

As described above, in this embodiment, in addition to the effect of the fourth embodiment, when the display mode is changed to an arbitrary display mode using the display mode setting means 32 according to the will of the user of the device, Since the display mode automatically returns to the initial display mode after a predetermined time, it is possible to save the trouble of returning to the display mode using the display mode setting means 32 again.

In this embodiment, the first display control means 2
Although the timer means 21 performs count control such as initialization of the counter based on an input signal from 0, the same effect can be obtained by performing the count control based on an input signal from the display mode setting means 32. Obviously you can do that. In addition, the count operation is stopped when the display mode is changed from the temperature display mode to the setting display mode. However, if only the counter is initialized without stopping the count operation, the above specification can be satisfied. The configuration of the first display control means 20 and the timer means 21 can be simplified by omitting the count stop operation.

(Embodiment 6) A sixth embodiment of the present invention will be described below with reference to FIGS. FIG.
FIG. 5 shows a block diagram of an induction heating cooker according to a sixth embodiment of the present invention. The difference from the fourth embodiment is that, in addition to the operation mode setting signal indicating the setting of the device operation mode and the like by the second modulating means 38 on the operation unit 5, the display mode input from the display mode setting means 32 The change signal is converted into a digital signal of a predetermined digit and the first demodulation means 2
2 and the control section 4 outputs the first demodulation means 2
2 converts the input signal from the second modulation means 38 into the operation mode setting signal or the display mode change signal again, and the operation mode setting signal is converted into the induction heating section control means 14.
The display mode change signal is supplied to the first display control means 23.
Respectively, the first display control means 23 has a plurality of display modes, and selects the display mode based on the input signal from the first demodulation means 22; A display signal is created according to the selected display mode on the basis of the input signal of
Is that the wiring connecting the display mode setting means 32 of the operation unit 5 and the control unit 4 has been removed.

In the first embodiment, when a mode for displaying the temperature detected by the temperature sensing element 6 is provided and the temperature is displayed on the operation section 5, the induction heating section control means 14 of the control section 4
Needs to be transmitted from the control unit 4 to the operation unit 5 via the first modulation unit 15 and the second demodulation unit 28. In this case, for example, if the display temperature is limited from 44 ° C. to 300 ° C. (256 deg), an 8-bit signal is required to transmit the temperature, and the control unit 4 sends the operation unit 5
The signal to be output to is increased.

This embodiment improves the above points and simplifies the configuration of the apparatus. The operation of the induction heating cooker configured as described above will be described with reference to FIGS. 16 and 17. I do. FIG. 16 shows the second modulating means 3.
8 is a diagram illustrating an output signal of FIG. As shown in FIG. 16A, a display mode is set to a predetermined one separately from a signal for transmitting a setting such as a device operation mode performed in the conventional configuration (hereinafter referred to as an operation mode setting signal). For this purpose, a signal to be transmitted (hereinafter referred to as a display mode change signal) is newly provided, and a signal type discriminator is provided for discriminating the two transmission signals. Upon receiving this signal, the first demodulating means 22 distinguishes between the operation mode setting signal and the display mode change signal by the type discriminating section, and converts the operation mode setting signal into the setting of the equipment operation mode and the like, and then controls the induction heating section. The first display control means 23 outputs the display mode change signal to the first display control means 23
Output to When the control unit 4 and the operation unit 5 are communicating periodically, as shown in FIG. 16B, one signal includes both the display mode change signal and the operation mode setting signal. The first demodulation means 2 receiving this signal
2 is separated into a display mode change signal and an operation mode setting signal and reconverted, and then output to the induction heating section control means 14 or the first display control means 23. The configuration of the first demodulation unit 22 and the second modulation unit 38 can be simplified without the need to distinguish the change signal.

FIG. 17 is a flowchart showing the operation of the first display control means 23. The difference from the first display control means in the fourth embodiment is that display is performed based on an input signal from the first demodulation means 22 in the control unit 4 instead of the display mode setting means 32 in the operation unit 5. It is to select a mode. That is, when “L” is input from the first demodulation unit 22 in step 81, the setting display mode is changed to
When the "H" signal is input , the temperature display mode is selected as the display mode. Further, the display mode is switched from the setting display mode to the temperature display mode or from the temperature display mode to the setting display mode by detecting a rise of the input signal from the first demodulation means 22 from “L” to “H”. You may. Then, according to the selected display mode, the first
The display control means 23 controls the first display means 18 so as to set the device operation mode and the like, and to display the temperature detected by the temperature sensing element 6 or the abnormal state of the induction heating unit 3 or the like.

As described above, the work to transmit the temperature information from the control unit 4 to the operation unit 5 via the first modulation unit 15 and the second demodulation unit 28 is omitted, and the cooking object in the load pan 7 is saved. 9 can eliminate a large amount of data communication while realizing the temperature display, and control the output signal of the display mode setting means 32 from the operation unit 5 via the second modulation means 38 and the first demodulation means 22. Since the signal is transmitted to the unit 4, the wiring connecting the display mode setting means 32 and the control unit 4 in the operation unit 5 can be removed, and the configuration of the device can be further simplified.

(Embodiment 7) Hereinafter, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 18 is a block diagram showing an induction heating cooker according to a seventh embodiment of the present invention. The difference from the sixth embodiment is that
The control unit 4 initializes the counter, starts the counting operation or stops the counting operation based on the input signal from the first display control means 24, and displays the result on the first display control means 24 after counting a predetermined time. Timer means 25 for outputting a signal for changing the mode to the initial display mode
And the first display control means 24 is the first demodulation means 22
The start or stop of the count operation of the timer means 25 is controlled based on an input signal from the timer means 25, and the display mode is changed to an initial display mode based on an input signal from the timer means 25.

In the sixth embodiment, after the temperature display mode is selected by using the display mode setting means 32 and the temperature detected by the temperature sensing element 6 is displayed on the first display means 18, the display mode is set. Is returned to the setting display mode so that the display contents of the two display means are the same, the display mode is selected again by using the display mode setting means, and a signal for changing the display mode is transmitted to the operation unit 5. Must be transmitted to the control unit 4.

The present embodiment is to improve such a point, and the operation of the induction heating cooker configured as described above will be described. When the power switch 2 is connected and the AC power supply 1 is applied to the device, the first display control means 24 starts operating. First, the setting display mode and the temperature display mode
The setting display mode is selected as the initial display mode from among the three display modes, and the timer 25 is controlled so as to stop the counting operation. Next, switching control between the two display modes and operation control of the timer means 25 are performed based on the input signal from the first demodulation means 22, and the equipment operation mode, the setting output or the setting temperature, After inputting a signal relating to a temperature detected by the temperature element 6 and an abnormal state of the induction heating unit 3 or the like, a display signal is created based on an input signal from the induction heating unit control unit 14 in accordance with the selected display mode, and The display signal is output to the display means 18.

The operation of the timer means 25 is the same as that of the timer means 36 described in the second embodiment, when the count operation start signal is input from the first display control means 24, the timer counter is initialized and the count operation is started. The counting operation is immediately stopped when the counter value exceeds a predetermined value or when it is determined that the desired time has elapsed due to the carry of the counter, and the first display control means 24 displays the display mode. Is output to change the display mode to the initial display mode, and thereafter, the operation waits for the input of the operation start signal from the first display control means 24.
Further, when the count operation stop signal is input from the first display control means 24, the count operation is immediately terminated and the state is again awaiting the input of the count operation start signal.

When the temperature display mode is selected using the display mode setting means 32 while the setting of the equipment operation mode or the like is being displayed on the first display means 18, a signal indicating the change of the display mode is issued. The information is transmitted from the operation unit 5 to the control unit 4 via the second modulation unit 38 and the first demodulation unit 22, and the first display control unit 24 outputs the first demodulation unit 22
The display mode is changed from the setting display mode to the temperature display mode based on the input signal from the CPU, the temperature detected by the temperature sensing element 6 is displayed on the first display means 18, and the count operation is started on the timer means 25. Output a signal for performing
After a lapse of a predetermined time, the timer means 25 outputs a signal for changing the display mode to the setting display mode which is the initial display mode, and the first display control means 24 sets the display mode by inputting this signal. Change to display mode,
The first display means 18 displays settings such as a device operation mode. When the setting display mode is selected by using the display mode setting means 32 while the first display means 18 is displaying the temperature, a signal for changing the display mode is sent from the operation section 5 to the control section 4. The first display control means 24 changes the display mode to the setting display mode based on the input signal from the first demodulation means 22 and transmits the setting, and the first display means 18 displays the setting. Means 2
A signal for stopping the counting operation is output to 5 and the counting operation of the timer means 25 is terminated.

As described above, in the present embodiment, in addition to the effects of the sixth embodiment, when the display mode is changed to an arbitrary display mode by using the display mode setting means 32 according to the will of the user of the device, Since the display mode automatically returns to the initial display mode after a predetermined time, it is possible to save the trouble of returning to the display mode using the display mode setting means 32 again.

In this embodiment, the first display control means 2
While the timer means 25 has performed count control such as initialization of the counter based on the input signals from the 4, based on an input signal from the first demodulation means 22, the same effect even if the count control Can be obtained.

The count operation is stopped when the display mode is changed from the temperature display mode to the setting display mode. However, if only the initialization of the counter is performed without stopping the count operation, the above-described specification is obtained. Satisfaction can be satisfied, and the count stop operation can be omitted, and the configurations of the first display control unit 24 and the timer unit 25 can be simplified.

Further, in the conventional example and the first to seventh embodiments, the modulating means and the demodulating means are configured to perform serial communication by wire. However, similar effects can be obtained in other communication methods such as wireless communication. it can. Also, a part or all of the constituent means of the control unit 4 and the control unit 5
Some or all of the components can be performed by a microcomputer.

[0098]

As described above, the induction heating cooker according to the present invention has an induction heating section including a heating coil and switching means, an induction heating section control means for controlling the induction heating section, and a first means for modulating a control signal. A control unit including a modulating unit and a first demodulating unit for demodulating a control signal; an input unit and a device operation mode according to a signal from the input unit;
An operation unit including a mode control unit for changing or maintaining a setting relating to the operation state of the device such as a setting output, a second modulation unit for modulating a control signal, and a second demodulation unit for demodulating a control signal; The unit includes a first display control unit that creates a display signal based on an input signal from the induction heating unit control unit and outputs the display signal to a first display unit, and the operation unit includes a plurality of display modes. A second display for generating a display signal based on an input signal from the display mode setting means for inputting a signal for selecting a specific display mode and an input signal from the mode control means and outputting the display signal to the second display means; By providing the control means, the same display can be performed in different places without increasing the number of signal lines, and it is possible to easily check the setting contents when adjusting the heat power or operating the pot. In addition, it is easy to confirm the presence or absence of a communication abnormality between the control unit and the operation unit.Moreover, different displays can be performed in different places, and a plurality of pieces of information can be displayed at the same time or a plurality of pieces of information can be displayed. From the display.

The operation unit has a timer means,
The timer means performs the second
A signal for changing the display mode of the second display means to a predetermined mode to the display control means, and initializing the counter based on an input signal from the second display control means or the display mode setting means. Alternatively, by starting the counting operation, by operating the display mode setting means according to the will of the person using the device, it is possible to obtain various information by changing from the initial display mode to another display mode, After the information is obtained, the display mode automatically returns to the initial display mode, so that it is not necessary to operate the display mode setting means again to change the display mode to the initial display mode.

Further, the timer means initializes the counter based on the input signal from the input means, so that the display mode is changed while operating the input means to change the setting of the device operation mode or the like. The change can be prevented, and when a predetermined time elapses after the setting change ends, the timer means stops counting and can automatically return to the initial display mode.

Further, an induction heating section including a heating coil and switching means, an induction heating section control means for controlling the induction heating section, a first modulation means for modulating a control signal, and a first demodulation for demodulating a control signal. A control unit including means, an input means and a mode control means for changing or maintaining control of a setting relating to an equipment operation state such as an equipment operation mode and a setting output in accordance with a signal from the input means, and a second means for modulating a control signal. And an operation unit including a second demodulation unit for demodulating a control signal, wherein the operation unit creates a display signal based on an input signal from the mode control unit and outputs the display signal to the second display unit. A display mode setting unit for inputting a signal for selecting a specific display mode from a plurality of display modes, wherein the control unit comprises: By using the display mode setting means and the first display control means for generating a display signal based on the input signal from the induction heating section control means and outputting the display signal to the first display means, the apparatus is used. It is possible to operate the display mode setting means in the operation unit to select necessary information from among a plurality of pieces of information of the control unit and to display the selected information on the first display means. There is no need to transmit from the control unit to the operation unit via the first modulation unit and the second demodulation unit, and a large amount of data communication is eliminated, thereby simplifying the configurations of the modulation unit of the control unit and the demodulation unit of the operation unit. Can be

Further, the control unit includes timer means. The timer means sends a signal for changing the display mode of the first display means to the predetermined mode to the first display control means after the predetermined time has elapsed. Output, and based on an input signal from the first display control means or the display mode setting means, initializes a counter or starts a count operation, thereby controlling the modulation means of the control unit and the demodulation means of the operation unit. In addition to simplifying the configuration, the user of the device can operate the display mode setting means to select one of a plurality of display modes, and automatically after a predetermined period of time, the initial display Since the mode is returned to, the operation of operating the display mode setting means again to change the display mode to the initial display mode can be omitted.

Further, an induction heating section including a heating coil and switching means, an induction heating section control means for controlling the induction heating section, a first modulation means for modulating a control signal, and a first demodulation for demodulating a control signal. A control unit including means, an input means and a mode control means for changing or maintaining control of a setting relating to an equipment operation state such as an equipment operation mode and a setting output in accordance with a signal from the input means, and a second means for modulating a control signal. An operation unit including a modulation unit and a second demodulation unit for demodulating a control signal, wherein the operation unit creates a display signal based on an input signal from the mode control unit and outputs the display signal to the second display unit. And a display mode setting means for inputting a signal for selecting a specific display mode from a plurality of display modes. The adjusting means converts the display mode change signal input from the display mode setting means into a digital signal of a predetermined digit in addition to the operation mode setting signal corresponding to the setting of the device operation mode and serially transmits the converted signal to the first demodulation means. Output, and the control unit includes a first display control unit that creates a display signal based on input signals from the first demodulation unit and the induction heating unit control unit and outputs the display signal to the first display unit. The first demodulation means reconverts an input signal from the second modulation means into the operation mode setting signal or the display mode change signal, and the operation mode setting signal is transmitted to the induction heating section control means. The display mode change signal is output to the first display control means, respectively, so that the display mode setting means in the control unit and the first display control means in the operation unit are exclusively used for signal transmission and reception. It is possible to simplify the configuration of the device to remove the wiring.

Further, the control unit includes timer means, and the timer means outputs a signal for changing the display mode of the first display means to the predetermined mode to the first display control means after the predetermined time has been counted. The counter is initialized or the count operation is started based on an input signal from the first display control means or the first demodulation means, thereby reducing dedicated wiring connecting the control unit and the operation unit. In addition to simplifying the configuration of the device, the control unit automatically returns to the initial display mode after the elapse of a predetermined time, so that it is possible to save the trouble of outputting a signal for changing the display mode from the operation unit.

[Brief description of the drawings]

FIG. 1 is a block diagram of an induction heating cooker according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the induction cooking device.

FIG. 3 is a flowchart showing the operation of the second display control means;

FIG. 4 is a flowchart showing a control method of the display mode.

FIG. 5 is a block diagram of an induction heating cooker according to a second embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the second display control means;

FIG. 7 is a flowchart showing a display mode and a control method of a timer unit.

FIG. 8 is a flowchart showing the operation of the timer means.

FIG. 9 is a flowchart showing the operation of the third display control means;

FIG. 10 is a flowchart showing the operation of the timer means.

FIG. 11 is a block diagram of an induction heating cooker according to a fourth embodiment of the present invention.

FIG. 12 is a flowchart showing the operation of the first display control means.

FIG. 13 is a block diagram of an induction heating cooker according to a fifth embodiment of the present invention.

FIG. 14 is a flowchart showing the operation of the first display control means.

FIG. 15 is a block diagram of an induction heating cooker according to a sixth embodiment of the present invention.

16A is a diagram showing a transmission signal of a second modulation unit having a type discrimination unit, and FIG. 16B is a diagram showing a transmission signal of a second modulation unit having a display mode discrimination unit.

FIG. 17 is a flowchart showing the operation of the first display control means.

FIG. 18 is a block diagram of an induction heating cooker according to a seventh embodiment of the present invention.

FIG. 19 is a block diagram of an induction heating cooker in a conventional example.

20A is a perspective view of a conventional induction heating cooker, and FIG. 20B is a perspective view of another conventional induction heating cooker.

FIG. 21 is a flowchart showing the operation of a conventional display control means.

[Explanation of symbols]

 Reference Signs List 3 induction heating unit 4 control unit 5 operation unit 11 heating coil 12 switching unit 14 induction heating unit control unit 15 first modulation unit 16 first demodulation unit 17 first display control unit 18 first display unit 26 mode control Means 27 Second modulation means 28 Second demodulation means 31 Input means 32 Display mode setting means 33 Second display means 34 Second display control means

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Fujii 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-5-54962 (JP, A) JP-A 64-64 24386 (JP, A) JP-A-1-320014 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05B 6/12

Claims (7)

(57) [Claims] 1. An induction heating unit including a heating coil and a switching unit, an induction heating unit control unit for controlling the induction heating unit, a first modulation unit for modulating a control signal, and a first demodulation for demodulating a control signal. A control unit including means,
Input means, mode control means for changing or maintaining control of the operation state of the device in accordance with a signal from the input means, second modulation means for modulating the control signal, and second demodulation means for demodulating the control signal And an operation unit including: a first display control unit that generates a display signal based on an input signal from the induction heating unit control unit and outputs the display signal to a first display unit; The unit creates a display signal based on an input signal from a display mode setting means for inputting a signal for selecting a specific display mode from among a plurality of display modes, and a second signal based on an input signal from the mode control means. An induction heating cooker having a second display control means for outputting to a display means. 2. An operation unit comprising timer means, the timer means outputting a signal for changing a display mode of the second display means to a predetermined mode to a second display control means after a predetermined time count is completed, 2. The induction heating cooker according to claim 1, wherein the counter is initialized or the count operation is started based on an input signal from the second display control means or the display mode setting means. 3. The induction heating cooker according to claim 2, wherein the timer means initializes a counter based on an input signal from the input means. 4. An induction heating unit including a heating coil and a switching unit, an induction heating unit control unit for controlling the induction heating unit, a first modulation unit for modulating a control signal, and a first demodulation for demodulating a control signal. A control unit including means,
Input means, mode control means for changing or maintaining control of the operation state of the device in accordance with a signal from the input means, second modulation means for modulating the control signal, and second demodulation means for demodulating the control signal An operation unit including a second display control unit that generates a display signal based on an input signal from the mode control unit and outputs the display signal to the second display unit, and a plurality of display modes. A display mode setting unit for inputting a signal for selecting a specific display mode, wherein the control unit creates a display signal based on input signals from the display mode setting unit and the induction heating unit control unit, and generates a first signal. An induction heating cooker having a first display control means for outputting to the display means. 5. The control unit includes timer means, and the timer means outputs a signal for changing a display mode of the first display means to a predetermined mode to the first display control means after a predetermined time count, and The induction heating cooker according to claim 4, wherein the counter is initialized or the count operation is started based on an input signal from the first display control means or the display mode setting means. 6. An induction heating unit including a heating coil and a switching unit, an induction heating unit control unit for controlling the induction heating unit, a first modulation unit for modulating a control signal, and a first demodulation for demodulating a control signal. A control unit including means,
Input means, mode control means for changing or maintaining control of the operation state of the device in accordance with a signal from the input means, second modulation means for modulating the control signal, and second demodulation means for demodulating the control signal An operation unit including a second display control unit that generates a display signal based on an input signal from the mode control unit and outputs the display signal to the second display unit, and a plurality of display modes. Display mode setting means for inputting a signal for selecting a specific display mode, wherein the second modulating means inputs from the display mode setting means in addition to the operation mode setting signal corresponding to the setting of the device operation mode. The control unit converts the display mode change signal into a digital signal of a predetermined digit and serially outputs the digital signal to the first demodulation unit. Means for generating a display signal based on the input signal from the means and outputting the display signal to the first display means, wherein the first demodulation means converts the input signal from the second modulation means to the first display means. The operation mode setting signal or the display mode change signal is converted again, and the operation mode setting signal is output to the induction heating unit control means, and the display mode change signal is output to the first display control means. Induction heating cooker. 7. The control unit includes timer means, and the timer means outputs a signal for changing a display mode of the first display means to a predetermined mode to the first display control means after a predetermined time count, and 7. The induction heating cooker according to claim 6, wherein a counter is initialized or a counting operation is started based on an input signal from the first display control means or the first demodulation means.