JP2002299025A - Microwave range - Google Patents

Abstract

PROBLEM TO BE SOLVED: To check the material of a load cooking pot in further detail. SOLUTION: In the microwave range, a control circuit 29 for controlling the electric current to be sent to induction heating coils 8, 9, etc., and the control circuit has a monitor circuit 52 for detecting the input current and input voltage to be fed to the induction heating coils. Furthermore, the control circuit is structured to conduct a determination mode for determining whether the material and shape of the load cooking pot is suitable for the induction heating in plural stages, by sending an electric current to the induction heating coils for a prescribed period of time, set by a specific input operation and detecting the input electric power from the output of a monitoring circuit, when the electric current is sent to the induction heating coils.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic cooker for performing cooking by induction heating.

[0002]

2. Description of the Related Art In an electromagnetic cooker provided with an induction heating coil as a heating source, for example, as shown in JP-A-11-87043, the material of a cooking vessel is checked at the start of cooking, and if the material is proper, Continue heating operation as it is,
The heating is not performed when it is determined to be inappropriate.

On the other hand, in the case of the above configuration, the material is checked while the object to be cooked is set in the cooking container. If the material is inappropriate, another container is prepared and the object to be cooked is replaced. Operation is necessary, and at the same time it is inconvenient to use, and because the material of the cooking container is judged as appropriate or inappropriate, even if you have multiple pots that can be used, for example, you can not understand the efficiency of each pot, If the thermal efficiency is poor even if it can be used, there is a problem that the cooking time is prolonged by using it as it is.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to check the material of a load pan more precisely in an electromagnetic cooker that performs heating cooking by induction heating.

[0005]

According to the present invention, a top plate on which a load pan for storing an object to be heated is mounted on an upper surface of a cooking device main body, and an induction heating coil is provided below the top plate, In a device equipped with a control circuit for controlling energization of the induction heating coil and the like, the control circuit includes an input current monitor circuit for detecting an input current supplied to the induction heating coil,
Similarly, an input voltage monitor circuit for detecting an input voltage is provided, and a control circuit is energized to the induction heating coil for a predetermined time set in advance by a specific input operation. The input power is detected from the output, and a determination mode for determining in a plurality of steps whether or not the material and shape of the load pan is suitable for induction heating is executed.

According to the present invention, the control circuit is configured to apply a rated maximum current to the induction heating coil when the determination mode is executed.

Further, according to the present invention, a heating power display lamp for displaying the output of the induction heating coil by a plurality of lamps is provided, and the control circuit displays the execution result of the determination mode in a plurality of stages using the heating power display lamp. It is configured in such a manner.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. For example, reference numeral 1 denotes an electromagnetic cooker main body which is incorporated in a top plate cabinet 2 of a system kitchen by a drop-in method. A top plate 3 made of heat-resistant glass is mounted on the upper surface, and an intake / exhaust cover 5 having a large number of ventilation holes 4 is detachably mounted behind the top plate.

An operation panel 6 is provided on the right front side of the electromagnetic cooker main body 1, and a roaster door 7 is provided on the left side of the operation panel so as to be freely drawn out.

Further, below the top plate 3, induction heating coils 8 and 9 are provided on the left and right sides in front, and a built-in radiant heater 10 is disposed behind these heating coils.

On the other hand, the operation panel 6 is mainly divided into three sections in the left-right direction as shown in FIG. Fried food key 12, and a start key 13 below which a power supply to the induction heating coil 9 is turned on / off.
And a pair of heating power setting keys 14, 14, and the above-mentioned fried food key 12, start key 13, and heating power setting keys 14, 14.
, The operation of the induction heating coil 9 constituting the right cooker is set.

In the center of the operation panel 6, a power key 15 for the roaster and a heating power setting key 16 are disposed on the upper side, and a start key for turning on / off the power supply to the radiant heater 10 is provided below these keys. 17 and a pair of heating power setting keys 18 and 18 are arranged.
Is provided with three heat power display lamps 19... Each time the heat power setting key 16 is turned on, the setting is switched in the order of low-medium-high-low in a loop.

Further, on the left side of the operation panel 6,
A timer key 20 is arranged, and a start key 21 for turning on and off the power supply to the induction heating coil 8 and a pair of heating power setting switches 22, 22 are arranged below the timer key 20.
Further, four timer display lamps 23 are provided on the timer key 20, and every time the timer key 20 is turned on, 0.5 (time) -1-2-3-off-0.5 is displayed. These are sequentially switched and set in a loop, and the operation of the induction heating coil 8 constituting the left cooker is set by these.

FIG. 4 shows the induction heating coils 8 and 9 of the top plate 3.
In the heating power display unit arranged in front of the heating power, seven heating power display lamps 24 indicating the heating power of the induction heating coil 8 in seven stages are provided.
The heat power indicator lamp 25 blinks in conjunction with the heat power indicator lamp 22 and the heat power of the induction heating coil 9 is 7
There are provided seven heating power display lamps 26 to be displayed in stages, and a high temperature lamp 27 which lights up and warns when the temperature of the top plate 3 reaches a high temperature of, for example, 70 degrees or more.

FIG. 5 is a block diagram showing a control circuit 29 for controlling the energization of the induction heating coils 8, 9 and the like. The control circuit 29 is arranged on the operation panel 6 at an input port of a main control unit 30 constituted by a microcomputer. A key input circuit 31 for inputting ON / OFF of each switch described above is connected, and an LED display circuit 33 for blinking each lamp through an LED drive circuit 32 to an output port, and induction heating coils 8 and 9 are provided. A cooling fan drive circuit 35 for driving a cooling fan 34 for cooling the like, a buzzer drive circuit 36 for operating a buzzer (not shown) for alarm, and a self-holding device for driving a self-holding relay contact 38 connected to a commercial 200 V power supply 37 The relay drive circuit 39 and the like are connected.

Power is supplied to the main controller 30 via a main / right stove power circuit 40, and the self-holding relay contact 38 is driven by a power relay drive circuit 41. The power supply relay drive circuit is configured to operate by the self-holding relay drive circuit 39 and the output of the power supply switch 11 connected to the power supply 37. After the power supply switch 11 is turned on to turn on the relay contact 38, cooking is performed. Is completed and the power switch 11 is turned off, for example, when the cooling fan 34 is operated to cool the top panel 3 and the induction heating coils 8 and 9, the main control unit 30 controls the self-holding relay drive circuit 39. , The relay contact 38 is closed, and the power supply to the cooling fan 34 and the like is continued.

Reference numeral 42 denotes a power switch monitor circuit connected to the output side of the power switch 11;
, And outputs the detection result to the input port of the main control unit 30.

Reference numeral 43 denotes a right cooker control unit for controlling the energization of the induction heating coil 9 and the gradient heater 10 and the like, which is constituted mainly of a microcomputer, for example, and a high frequency power supplied to the induction heating coil 9 at an output port. A storage means which is connected to an inverter circuit 44 for generation and a radiant heater drive circuit 45 for controlling power supply to the radiant heater 10 and has a non-volatile memory for storing various data at an input port. Storage element 4
6. A temperature detection circuit 48 for detecting the output of the thermoswitch 47 for detecting the overheated state of the radiant heater 10, disposed substantially at the center of the induction heating coil 9, and mounted on the top plate 3. Temperature sensor 4 for detecting the temperature of the loading pan
9 and an IGB for detecting an overheat state of the IGBT drive circuit
Temperature detection circuit 51 for detecting the output of T temperature sensor 50
Etc. are connected.

Reference numeral 52 denotes an input current and input voltage monitoring circuit connected to the output side of the power switch 11, and outputs a detection result to an input port of the right cooker control unit 43.

Reference numeral 53 controls the power supply to the induction heating coil 8 having substantially the same configuration as that of the right stove controller 43 and the power supply to the roaster heater incorporated in the roaster (not shown).
For example, a left hob and roaster drive circuit mainly composed of a microcomputer, the same circuit configuration as the input current and input voltage monitor circuit 52 and the temperature detection circuit 51, and a drive circuit for controlling energization of a heater in the roaster It has.

The main control unit 30, the right cooker control unit 43, the left cooker and the roaster drive circuit 53 communicate with each other alternately via a communication line 54 to detect the operation state of each other. .

The left cooker and roaster drive circuit 5
Power is supplied to the control unit constituted by the microcomputer No. 3 from the left cooker power supply circuit 55 connected to the output side of the relay contact.

When cooking is performed using the induction heating coil 9, for example, the power switch 11 is first turned on to activate the power relay drive circuit 41 and close the relay contact 38, thereby closing the relay contact 38. Power is supplied to the main / right stove power supply circuit 40 and left cooker power supply circuit 55, and power supply to the main control unit 30, the right cooker control unit 43, the left cooker and roaster drive circuit 53, and the like is started.

Then, after operating the heating power setting switches 14 and 14 to set the desired heating power, the start switch 13
Is turned on, the main control unit 30 detects these input operations, and transmits the detection result to the right stove control unit 43, so that the right stove control unit controls the power supply to the induction heating coil 9. Then, cooking is started, and at this time, the set heating power can be confirmed by the lighting state of the heating power display lamps 26.

On the other hand, the main controller 30 turns on the power switch 11 while simultaneously turning on the heat setting keys 14 and 14, for example, to determine whether the material and size of the load pan are suitable for induction heating. It is configured to execute a determination mode for detecting whether or not the determination is made.

That is, as shown in FIG. 6, for example, by placing the load pan 56 on the top plate 3 and executing the determination mode, the main control unit 30 can control the induction heating coil 9 for 10 seconds, for example. To the input current and input voltage monitoring circuit 52.
, And the detection result is displayed by turning on the heat power display lamps 26.

When displaying the above detection results, for example, when the rated power is 2000 W and the input power is 2000 W, all of the heat power display lamps 26.
In the case of 900W, 6 lights, in the case of 1800W, 5 lights, in the same case of 1700W, 4 lights, in the same case of 1600W, 3 lights, in the same case of 1500W, 2 lights, and in the case of 1400W or less, One light,
In the case of a pot that cannot be used, all are blinked.

In the above embodiment, the number of lamps that are turned on in units of 100 W is changed. However, the present invention is not limited to this. For example, 200 W or 150 W can be freely set. Although the display is performed by using the display, a dedicated display lamp, a liquid crystal display, or the like may be used.

On the other hand, the judgment mode is the power switch 11
Since the power supply switch 11 is turned off and then turned on again, normal heating and cooking can be performed.

In the above determination mode, the load pan 5
If the 6 is not set correctly in the center of the stove, accurate judgment cannot be made.
It can be determined more accurately.

In the above embodiment, the judgment mode is performed using the right cooker. However, the present invention is not limited to this, and the left cooker may be used.

[0032]

According to the structure of the present invention, the determination mode is determined in a plurality of stages to determine whether the material and the size of the load pan are suitable for induction heating by a specific operation. In addition, it is possible to finely check whether or not the load pan is suitable for induction heating by a relatively simple operation without putting a load such as water into the load pan.

According to the structure of the present invention, the rated maximum power is applied to the induction heating coil when the determination mode is executed, so that the characteristics of the load pan can be determined in a shorter time and in more detail. Things that can do things.

Further, according to the structure of the present invention, the judgment result of the judgment mode is displayed by using the heating power display lamp for displaying the set heating power of the induction heating coil, so that a dedicated display is not provided. The judgment result can be displayed with an inexpensive configuration, and when the thermal power display lamp is composed of a large number of lamps, the characteristics of the load pan can be displayed in more detail.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a front view showing an embodiment of the operation panel.

FIG. 4 is a plan view of a main part of the same.

FIG. 5 is a block diagram showing an embodiment of the control circuit.

FIG. 6 is a side vertical cross-sectional view for explaining the operation of the main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooker main body 3 Top plate 8 Induction heating coil 9 Induction heating coil 24 Thermal power indicator lamp 26 Thermal power indicator lamp 29 Control circuit 52 Input current and input voltage monitor circuit 56 Load pan

[Procedure amendment]

[Submission date] March 5, 2002 (2002.3.5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003] On the other hand, in the case of the above configuration, the material to be cooked is checked in a state where the object to be cooked is set in the cooking container. If the material is inappropriate, another container is prepared and the object to be cooked is replaced. Operation is necessary, and at the same time it is inconvenient to use, and because the material of the cooking container is judged as appropriate or inappropriate, even if you have multiple pots that you can use, for example, you can not understand the efficiency of each pot, If there is bad efficiency also can use, there are problems such that as it is cooking time is longer using.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electromagnetic cooker for performing heating cooking by induction heating, in which the material and shape of a load pan are more closely checked.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006] The present invention is a control circuit, at the time of the determination mode execution in which the induction heating coil formed by construction so as to apply the maximum power rating.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

Therefore, first, the start switch 13 is turned on.
After the operation, operate the thermal power setting switches 14 and 14 to
By setting the desired heating power , the main control unit 30 detects these input operations, and transmits the detection result to the right stove control unit 43, so that the right stove control unit supplies power to the induction heating coil 9. To start cooking, and at this time, the set heating power can be confirmed by the lighting state of the heating power indicator lamps 26.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

On the other hand, the main control unit 30 turns on the power switch 11 while simultaneously turning on the heating power setting keys 14 and 14, for example, to determine whether the material and shape of the load pan are suitable for induction heating. It is configured to execute a determination mode for detecting whether or not the determination is made.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

That is, as shown in FIG. 6, for example, by placing the load pan 56 on the top plate 3 and executing the determination mode, the main control unit 30 can control the induction heating coil 9 for 10 seconds, for example. supplying the maximum power rating, the input power at this time is detected from the output of the input current and the input voltage monitoring circuit 52, the thermal power display lamp 2 of this detection result
Displayed by lighting 6...

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

[0032]

According to the structure of the present invention, the determination mode is determined in a plurality of steps to determine whether the material and shape of the load pan are suitable for induction heating by a specific operation. Without putting a load such as water into the load pan, it is possible to finely check whether or not the load pan is suitable for induction heating by a relatively simple operation.

Continuing from the front page (72) Inventor Takuo Ohara 3-201 Minamiyoshikata, Tottori-shi, Tottori Sanyo Electric Co., Ltd. (72) Inventor Masami Akari 3-201 Minamiyoshikata, Tottori-shi, Tottori Sanyo Electric Tottori (72) Inventor Toshiya Nishimoto 3-201 Minamiyoshikata, Tottori City, Tottori Pref.

Claims (3)

[Claims] 1. A top plate on which a load pan for storing an object to be heated is mounted on an upper surface of a cooker main body, an induction heating coil is provided below the top plate, and power is supplied to the induction heating coil and the like. The control circuit is provided with an input current monitor circuit for detecting an input current supplied to the induction heating coil, and an input voltage monitor circuit for similarly detecting an input voltage. The circuit is energized to the induction heating coil for a predetermined time set in advance by a specific input operation, and input power is detected from the output of the input current monitor circuit and the input voltage monitor circuit at the time of energization, and the material of the load pan is detected. An electromagnetic cooker configured to execute a determination mode for determining in a plurality of steps whether or not the shape is suitable for induction heating. 2. The electromagnetic cooker according to claim 1, wherein the control circuit is configured to apply a rated maximum current to the induction heating coil when the determination mode is executed. 3. A heating power display lamp for displaying the output of the induction heating coil by a plurality of lamps, and the control circuit displays the execution result of the determination mode in a plurality of stages using the heating power display lamp. The electromagnetic cooker according to any one of claims 1 to 2, characterized in that the electromagnetic cooker is configured to perform the following.