JP3191643B2 - 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 used in ordinary households.

[0002]

2. Description of the Related Art In recent years, cookers using induction heating as a heat source have been reviewed from the viewpoint of high heat power and safety, and the proportion of cookers in cookers has been increasing. In this type of cooker, a coil for induction heating is arranged under a ceramic plate called a top plate arranged on the upper surface of the product, a high-frequency current of several tens of kilohertz is passed through this coil, and the ceramic plate is Eddy current loss is generated in the pot placed on the plate, thereby heating the pot.

In this induction heating cooker, when a high-frequency current is applied, components for induction heating generate heat and exceed the heat-resistant temperature of the components, so that the heat-generating components are cooled by a fan driven by a motor or the like. In some cases, when the cooling is insufficient, a display means (generally, a light emitting diode) for displaying the heating power of the induction heating indicates an abnormal state.

[0004] In addition, at the request of the user, the abnormal state of the equipment indicated to promptly repair in the case of the abnormal state of the equipment is not limited to the contents described above, but a large number. Some display an abnormal state.

FIG. 4 is a block diagram showing the configuration of a conventional general induction heating cooker, and FIG. 5 shows an operation display unit. In the drawing, reference numeral 101 denotes a DC power supply made from an AC power supply (not shown), and reference numeral 102 denotes an induction heating means connected to the DC power supply 101. A cooling unit 103 cools the induction heating unit 102. 104 is heating start means for starting heating by the user, 105 is heating power setting means for setting the heating power of induction heating, and 106 is heating power display means constituted by light emitting diodes for displaying the set heating power. is there.

Reference numeral 107 denotes a control unit that receives an input from the heating start unit and outputs it to the induction heating unit 102 so as to heat with the heating power set by the heating power setting unit 105. 108 is a temperature detecting means for detecting the heat generation temperature of the induction heating means 102, and 109 is this temperature detecting means 108.
When the heat generation temperature of the induction heating means 102 exceeds a predetermined value, the heating is stopped by outputting to the control means 107 and output to the thermal power display means 106 to display an abnormal state. is there. In FIG. 5, reference numeral 111 denotes a heating start switch, and 112 denotes a display lamp indicating a heating state. Reference numeral 113 denotes an up / down switch for changing the heating power setting.

The operation of the conventional example will be described with reference to FIGS. When the heating start switch 111 corresponding to the heating start means 104 is pressed in a state where the AC power supply and the DC power supply 101 are applied, the heating state display lamp 112 is turned on, for example, as shown in FIG. If the user wants to set another heating power, he or she changes it with the up / down switch 113. For example, when the left switch of the up / down switch 113 is pressed in the state of FIG.
As shown in (f), the set heating power is reduced by one.

If the temperature of the heat generated by the induction heating means 102 exceeds a predetermined value during heating, the abnormality display means 109
Displays an abnormal state using the display lamp 112. For example, when the heat generation temperature exceeds a predetermined value in the state of FIG. 5B, an abnormal state is displayed in a short predetermined cycle of FIG. 5C → (d) → (e) → (f). ) → (b) →
The display is repeated as shown in (c) → to inform the user of the abnormal state.

[0009]

However, in a device which shows a large number of abnormal states in recent years, it is very difficult for a user to understand what is displayed by such a display method. If it is performed, there is a problem that it takes a lot of trouble such that it is necessary to check the manual or the like for each operation.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an induction heating cooker having an abnormal display with easy-to-understand display contents and good visibility.

[0011]

According to a first aspect of the present invention, there is provided a DC power supply, an induction heating means connected to the DC power supply, and cooling the induction heating means. Cooling means, heating start means for the user to start heating, heating power setting means for setting the heating power of induction heating, heating power display means constituted by light emitting diodes for displaying the set heating power, and cooking time a timer setting means for setting a timer time display means formed by a liquid crystal display element for displaying the set timer time, receives the input of the heating start device, the timer time by the timer setting means is set In this case, the induction heating is performed so that the heating is performed with the heating power set by the heating power setting unit until the operation is stopped if the timer is not set. Control means for outputting to a stage, temperature detecting means for detecting a heat generation temperature of the induction heating means, and receiving the output of the temperature detection means, the control means when the heat generation temperature of the induction heating means exceeds a predetermined value. And the heating is stopped, and a light emitting die constituting the thermal power display means is provided.
Eau flashing display, table of timer time display means at the same time
Sentence that differs from the normal display
It is composed of abnormal display means for displaying a display including characters and displaying an abnormal state of cooling .

[0012] In the second means for solving the problems of the present invention,
In addition to the first problem-solving means, the cooling means further comprises a fan driven by a motor, and further includes a cooling state detecting means for detecting a driving state of the cooling means, and an output of the cooling state detecting means. In the case of an abnormal state such as a stop of the receiving motor or the like, an output to the control means to stop the heating and a light emitting die constituting the heating power display means
Eau flashing display, table of timer time display means at the same time
Sentence that differs from the normal display
It is composed of abnormal display means for displaying a display including characters and displaying an abnormal state of cooling .

[0013]

According to the first aspect of the present invention, there is provided a temperature detecting means for detecting a heat-generating temperature of an induction heating means, and an output of the temperature detecting means, the heat-generating temperature of the induction heating means being a predetermined value. When the value is exceeded, the output is outputted to the control means to stop the heating, and is constituted by the abnormality display means for outputting to the thermal power display means and the timer time display means to display the abnormal state, so that the displayed contents are easy to understand. In addition, it is possible to provide an induction heating cooker having an abnormal display with good visibility.

According to a second aspect of the present invention, there is provided a cooling state detecting means for detecting a driving state of the cooling means, and receiving the output of the cooling state detecting means and controlling the control in a case of an abnormal state such as a stop of a motor. In addition to the output to the means for stopping the heating and the abnormality display means for outputting to the thermal power display means and the timer time display means to display the abnormal state, the display contents of the abnormality can be displayed in an easy-to-understand manner.

Hereinafter, embodiments of the present invention will be described with reference to 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 block diagram of an induction heating cooker according to a second embodiment of the present invention, and FIG. 3 is a diagram of an operation display unit. .

In FIG. 1, reference numeral 1 denotes an AC power supply (not shown)
DC power supply 2 is an induction heating means connected to the DC power supply 1. 3 is a cooling means for cooling the induction heating means 2. Reference numeral 4 denotes heating start means for starting heating by the user, reference numeral 5 denotes heating power setting means for setting the heating power of induction heating, and reference numeral 6 denotes heating power display means constituted by light emitting diodes for displaying the set heating power. Reference numeral 7 denotes timer setting means for setting a cooking time, and reference numeral 8 denotes timer time display means constituted by a liquid crystal display element for displaying the set timer. 9 is a heating start means 4
When the timer time is set by the timer setting means 7, the induction heating means is configured to heat with the heating power set by the heating power setting means 5 until the timer is stopped if the timer time has not been set. 2 is a control means for outputting to the control unit 2. Numeral 10 is a temperature detecting means for detecting the heat generation temperature of the induction heating means 2, and 11 is a temperature detecting means.
Is output to the control means 9 when the heat generation temperature of the induction heating means 2 exceeds a predetermined value, heating is stopped, and the abnormal state is output to the thermal power display means 6 and the timer time display means 8. This is an abnormality display means for displaying.

In FIG. 2, the cooling means 3 comprises a fan driven by a motor, and
Reference numeral 2 denotes a cooling state detecting means for detecting a driving state of the cooling means 3, and 13 receives an output of the cooling state detecting means 12 and outputs it to the control means 9 in the case of an abnormal state such as a stop of the motor to stop heating. , Is output to the thermal power display means 6 and the timer time display means 8 to display an abnormal state. In addition, about each means of 1.2, 4-9, it is FIG.
The description is the same as that described above.

The operation of the first embodiment will be described with reference to FIGS. In FIG. 3, reference numeral 21 denotes a heating start switch, and reference numeral 22 denotes five light emitting diodes for displaying a heating state. 23 is an up / down switch for changing the heating power setting. Reference numeral 24 denotes a liquid crystal display element for displaying a timer time, which is composed of one 7-segment display showing a time digit, two colon display and two 7-segment display showing a minute digit. 25 is a timer setting switch,
It is composed of two switches for minute setting.

A heating start switch 21 corresponding to the heating start means 4 when the AC power supply and the DC power supply 1 are applied.
Is pressed, the heating state display light emitting diode 22 is turned on (for example, similar to FIG. 5B). If the user wants to set another heating power, the up-down switch 2
Change with 3. When the user uses the cooking timer (similar to the conventional example), the timer is set by the timer setting switch 25. For example, if the time setting switch is pressed once, FIG.
As shown in (b), the liquid crystal display element 24 displays “1 hour 00 minutes”.
Is displayed.

If the heat generation temperature of the induction heating means 2 exceeds a predetermined value during heating, the abnormality display means 11 displays the heating state display light emitting diode 22 and the liquid crystal display element 24.
The abnormal state is displayed using. For example, the heating state indicating light-emitting diode 22 is used in a predetermined short cycle as shown in FIG.
At the same time as the display is repeated as (b) → (c) →..., The liquid crystal display element 24 is different from the display in the normal state as shown in FIG. Notify the user of the abnormal condition.

With such a configuration, the liquid crystal display element 24
Thus, the abnormal state is displayed as characters in an easily understandable manner, and the abnormal state can be displayed with good visibility by the heating state display light emitting diode 22.

Next, in the case of the second embodiment, the cooling means 3 is constituted by a fan driven by a motor, and the cooling means 3 is detected by the cooling state detecting means 12.
The abnormality display means 13 receives the output of the cooling state detection means 12 and outputs it to the control means 9 in the case of an abnormal state such as a stop of the motor to stop heating, and outputs the heat power display means 6 and the timer time. The abnormal state is displayed on the display means 8 and the display method is the same as that of the first embodiment.

[0023]

As described above, according to the present invention, the output of the temperature detecting means is output to the control means when the heat generation temperature of the induction heating means exceeds a predetermined value, and the heating is stopped. Since it is composed of abnormality display means for outputting to the thermal power display means and the timer time display means for displaying an abnormal state, a cooling state detection means for detecting a driving state of the cooling means, and an output of the cooling state detection means In the case of an abnormal state such as a stop of the motor or the like, it is output to the control means to stop the heating and output to the thermal power display means and the timer time display means to display the abnormal state. In addition, it is possible to provide an induction heating cooker having an abnormal display with easy-to-understand display contents and good visibility.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a configuration of an induction heating cooker according to a second embodiment of the present invention.

FIG. 3A is a front view of an operation display unit according to an embodiment of the present invention. FIG.

FIG. 4 is a block diagram showing a configuration of a conventional induction heating cooker.

5A is a front view of a conventional operation display unit, and FIGS. 5B to 5F are explanatory views of the operation of the operation display unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 DC power supply 2 Induction heating means 3 Cooling means 4 Heating start means 5 Thermal power setting means 6 Thermal power display means 7 Timer setting means 8 Timer time display means 9 Control means 10 Temperature detection means 11 Abnormal display means 12 Cooling state detection means 13 Abnormal display means

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-338383 (JP, A) JP-A-4-137389 (JP, A) JP-A-60-211795 (JP, A) JP-A-3-3 46787 (JP, A) JP-A-5-47463 (JP, A) JP-A-5-54962 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05B 6/12

Claims (2)

(57) [Claims] 1. A DC power supply, an induction heating means connected to the DC power supply, a cooling means for cooling the induction heating means, a heating start means for starting heating by a user, and a heating power for the induction heating. Heating power setting means, a heating power display means comprising a light emitting diode for displaying the set heating power, a timer setting means for setting a cooking time, and a liquid crystal display element for displaying the set timer time. Timer time display means and the input of the heating start means, and if the timer time is set by the timer setting means, only the timer time is set by the heating power setting means until it is stopped if not set. Control means for outputting the heat to the induction heating means so as to heat with the heat generated by the heating means, and a temperature detecting means for detecting a heat generation temperature of the induction heating means. Receiving the output of the temperature detecting means and outputting heat to the control means when the heat generation temperature of the induction heating means exceeds a predetermined value, stopping the heating and blinking the light emitting diode constituting the thermal power display means Display,
At the same time , use the display segment of the timer
To form a display that contains characters different from those in the normal state.
An induction heating cooker comprising an abnormal display means for displaying an abnormal state of cooling . 2. A DC power supply; an induction heating means connected to the DC power supply; a cooling means comprising a fan for cooling the induction heating means; a heating start means for starting heating by a user; Heating power setting means for setting the heating power for heating, heating power display means comprising a light emitting diode for displaying the set heating power, timer setting means for setting the cooking time, and liquid crystal for displaying the set timer time Timer time display means constituted by a display element, receiving the input of the heating start means, if the timer time is set by the timer setting means, only the timer time, if not set, until the stop Control means for outputting to the induction heating means so as to heat with the heating power set by the heating power setting means, and a driving state of a fan of the cooling means A cooling state detecting means for detecting the output of the cooling state detecting means, and in the case of an abnormal state such as a stop of a motor, outputs to the control means to stop heating, and a light emitting diode constituting the heating power display means.
Flashing display, and at the same time display segment of timer time display means
Use different characters from the normal display
An induction heating cooker comprising abnormality display means for forming a display to indicate an abnormal state of cooling .