JP2004319295A - Cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a complex heating cooking device with an enlarged cooking chamber capable of improving operability and restraining the device from damage at abnormality. <P>SOLUTION: The cooking device comprises a heating means 2 heating an object to be heated in the cooking chamber, an induction heating means 1 induction-heating a pot or the like put on an upper surface of a body of equipment, an operation board 8 arranged on the cooking chamber controlling the operation of the heating means 2 or the induction heating means 1, and a temperature sensor 12 detecting the temperature in the vicinity of the outside of the cooking chamber. Power supply to the heating means 2 is stopped or restrained when the temperature sensor detects a temperature exceeding a prescribed temperature. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a combined cooking device having two or more heating units.
[0002]
[Prior art]
Conventionally, as this type of heating cooker, for example, there is an induction heating cooker as shown in FIG. 5 (for example, see Patent Document 1). In FIG. 5, 1 is a heating coil, 2 is a heater, 3 is a heating drive board for driving a heater and a heating coil in a cooking cabinet, 4 is a transistor for driving the heating coil, 5 is a radiation fin of the transistor, and 6 is a transistor. A temperature sensor, 7 is a partition plate, 8 is a cooking cabinet, 9 is a vent, 10 is an outer casing, and 11 is a cooling fan.
[0003]
The operation of the conventional cooking device will be described below. When commercial power is supplied and the inside of the cooking cabinet 8 is being heated by the heater 2, the temperature sensor 6 senses the radiant heat from the cooking cabinet 8 through the ventilation hole 9, and the heating operation by the heating coil 1 is performed. During the operation, the temperature sensor 6 can sense the temperature by the radiant heat of the transistor 5, which is one of the components for driving the heating coil, so that the temperature can be quickly detected even in an abnormal case, and the heating operation is stopped in an abnormal temperature. By doing so, damage to the electronic components can be prevented.
[0004]
[Patent Document 1]
JP-A-9-260055 (3-4 tool, FIG. 1)
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned conventional technology, the heating drive board 3 and the cooling fan 11 are provided above the cooking cabinet 8, which is a configuration that hinders the thinning of the equipment and the enlargement of the cooking cabinet. However, the operation unit for operating the device is not arranged on the upper surface of the housing, which is inconvenient.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to increase the size and operability of a cooking cabinet and to suppress damage to equipment in the event of an abnormality.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, a heating cooker of the present invention includes a heating unit for heating a food in a cooking cabinet, an induction heating unit for induction-heating a pot or the like installed on the top surface of a housing, and the heating unit. Means or an operation board provided at the upper part of the cooking chamber for controlling the operation of the induction heating means, and a temperature sensor for detecting an ambient temperature near the outside of the cooking chamber, wherein the temperature sensor has detected a predetermined temperature or higher. At this time, the power supply to the heating means is stopped or suppressed.
[0008]
A temperature sensor is provided in the vicinity of the cooking cabinet, and when an abnormality is detected in the temperature rise, the heating of the heating means is limited, and the temperature rise of the operation board portion is prevented, so that a malfunction of the operation board, the operation board supporting structure, etc. The temperature rise can be suppressed, and an operation unit for a user to operate the device can be provided at the upper part of the cooking chamber. And operation from the upper surface of a housing | casing becomes possible, and operability improves.
[0009]
In addition, the components on the operation board generate less self-heating than the heating drive board, and are easy to be miniaturized and thinned. The size of the cooking cabinet can be increased.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the first aspect of the present invention, the operation of the heating means for heating the food in the cooking cabinet, the induction heating means for induction heating a pot or the like installed on the upper surface of the housing, and the operation of the heating means or the induction heating means is described. An operation board provided at an upper portion of the cooking chamber to be controlled, and a temperature sensor for detecting an ambient temperature near the outside of the cooking chamber, and when the temperature sensor detects a predetermined temperature or more, energization to the heating means is performed. By stopping or suppressing, it is possible to suppress the abnormal temperature rise of the device such as the operation board and the operation board supporting structure, and improve the life and reliability, while allowing the operation from the upper surface of the housing.
[0011]
According to the second aspect of the present invention, by mounting the temperature sensor on the operation board, it is possible to accurately detect particularly abnormal temperature rise of the operation board with high accuracy, to improve the reliability of the electronic components, and to make an electrical connection to the temperature sensor. No lead wire or the like is required, and the cost is reduced.
[0012]
The invention according to claim 3 has a configuration in which a notifying means for notifying that the temperature sensor has detected a predetermined temperature or higher is provided on the operation board, so that the user can be quickly notified of the abnormality of the device, It is possible to prevent the equipment from being damaged by suppressing the use of the device.
[0013]
【Example】
(Example 1)
An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a configuration side view of the present embodiment, and FIG. 2 is a configuration top view.
[0014]
In FIG. 1, a heating coil 1 serving as an induction heating means, an LCD 9 serving as a notifying means, and an operation switch 10 are provided on an inner upper surface of a housing 11 so that an induction heating operation of a pot or the like and an operation from the upper surface of the housing can be performed. . The LCD 9 and the operation switches 10 are mounted on an operation board 8, and the operation board 8 is fixed by a board support holder. A temperature sensor 12 for detecting radiant heat from the cooking cabinet 5 is surface-mounted on the operation board 8.
[0015]
The heating coil 1 is supported by a heating coil supporting spring and a strip plate 6, and a cooking cabinet 5 is provided at the bottom of the housing. Inside the cooking cabinet 5, heaters 2 serving as heating means are arranged on both upper and lower surfaces so as to sandwich the food, a grill 3 for supporting the food, and a saucer for preventing water from sticking. 4 are provided.
[0016]
Next, in FIG. 2, components denoted by the same reference numerals as those in FIG. 1 are the same components, and only components having different reference numerals will be described. Reference numeral 13 denotes a heating control board for controlling the driving of the heating coil and the heater; 15, an inverter circuit mounted on the heating control board 13; 14, a cooling fan for cooling the inverter circuit 13 and the inside of the housing; The heating control board 13 is disposed on the side of the cooking cabinet 5.
[0017]
Reference numerals 1a and 1b denote heating coils, which are induction heating means, respectively. When the heating coils are driven by an inverter circuit, a heating target such as a pot on each heating coil can be heated. Here, 1a is a left heating coil, and 1b is a right heating coil.
[0018]
Reference numerals 9a, 9b, and 9c denote LCDs as notification means. 9a displays the state of the heating operation by the left heating coil 1a, 9b displays the state of the heating operation in the cooking chamber by the heater, and 9c displays the right heating. The state of the heating operation by the coil 1c is displayed. Hereinafter, 9a is referred to as a left IHLCD, 9b is referred to as a roaster LCD, and 9c is referred to as a right IHLCD.
[0019]
10a1, 10a2, 10a3, 10a4, 10a5, 10a6 are operation switches for controlling the heating operation (hereinafter referred to as left IH heating) by the left heating coil 1a, and 10b1, 10b2, 10b3, 10b4, 10b5, 10b6 are An operation switch for controlling the heating operation (hereinafter referred to as roaster heating) in the cooking chamber by the heater. 10c1, 10c2, 10c3, 10c4, 10c5, 10c6, and 10c7 are heating operations by the right heating coil 1b (hereinafter, left IH heating). ). By displaying the heating operation state on the top surface of the housing and providing an operation switch, and by arranging the operation unit and the display unit in the form corresponding to the left and right heating coils and the three heating locations of the cooking chamber, operation is possible. The usability is remarkably improved, for example, the easiness of the three-port heating operation can be understood at a glance.
[0020]
FIG. 3 is a top view of the external appearance of the device, and the printed character portions assigned the same reference numerals as those of the operation switches of FIG. 2 express the role of each switch. 10a1 is a switch for weakening the heating output of the left IH heating, 10a2 Is a switch for increasing the heating output of the left IH heating, 10a3 is an on / off switch for the left IH heating, 10a4, 10a5 is a timer time setting switch for the left IH heating, 10a4 is a time setting, 10a5 is a minute setting, and 10a6 is a timer cancel. Switch.
[0021]
10b1 is a switch for decreasing the heating output of roaster heating, 10b2 is a switch for increasing the heating output of roaster heating, 10b3 is an on / off switch for roaster heating, 10b4 is a menu selection switch for roaster automatic cooking, and 10b5 is a switch for roaster heating. The timer time setting switch and 10a6 are timer cancel switches.
[0022]
Further, 10c1 is a switch for decreasing the heating output of the right IH heating, 10c2 is a switch for increasing the heating output of the right IH heating, 10c3 is an on / off switch for the right IH heating, and 10c4 is an on / off for performing frying with the right IH heating. Switches 10c5, 10c6 are timer time setting switches for right IH heating, 10c5 is a time setting, 10c6 is a minute setting, and 10c7 is a timer cancel switch.
[0023]
When commercial power is supplied and the left IH heating ON / OFF switch 10a3 is operated, the cooling fan 14 is driven and the left IH heating is started. During the heating operation, the output can be adjusted by the switches 10a1 and 10a2, and the timer heating can be set by the switch inputs of 10a4 and 10a5. Similarly to the left IH heating, the right IH heating can start heating at 10c3, adjust the output at 10c1, 10c2, and perform timer heating at 10c5, 10c6.
[0024]
Next, when a signal is input from the roaster heating on / off switch 10b3 in a state where commercial power is supplied, the heater 2 is energized and the temperature in the cooking cabinet 5 rises. When the temperature in the cooking cabinet reaches a predetermined temperature (approximately 210 ° C. in this case) after a lapse of time, energization of the heater 2 is stopped, and when the temperature falls below 210 ° C., the heater 2 is energized again, and 210 ° C. If it exceeds, the heater 2 is turned off, and the food is cooked by keeping the inside of the cooking cabinet at 210 ° C. During roaster heating, the cooling fan 14 is driven in the same manner as during IH heating to suppress a rise in temperature near the cooking cabinet. The temperature sensor 12 mounted on the operation board 8 constantly detects the temperature during roaster heating, and stops the heating operation of the heater 2 when the detected temperature rises above a predetermined temperature (here, 85 ° C.). Then, an abnormality is displayed on the roaster LCD 9b and an abnormality is notified by the buzzer 16 sounding. The temperature sensor 12 is disposed on the operation board section immediately above the cooking cabinet, and is configured to detect a temperature in the vicinity, and can quickly detect an abnormal temperature rise in the housing.
[0025]
For example, even if there is a failure of the cooling fan or continuous use of the roaster, it is possible to suppress damage to devices in the housing such as the operation board, the board support holder, and the heating coil. In addition, the operation board 8 is provided on the upper surface of the cooking cabinet 5 in order to improve the usability of the appliance, make the appliance thinner, and increase the size of the cooking cabinet. Providing the temperature sensor 12 on the substrate 8 eliminates the need for a lead wire or the like for electrical connection with the temperature sensor, resulting in an inexpensive configuration. Further, when the abnormal temperature rises, the LCD 9b and the buzzer 16 inform the user of the abnormality, so that the user can operate the device even when the user is in the abnormal state, thereby preventing the device from being damaged.
[0026]
FIG. 4 is a circuit block diagram of the cooking device in the embodiment of the present invention. Hereinafter, this will be described in more detail with reference to FIG. 4, a heating drive unit 13 (equivalent to a heating drive board) drives an inverter circuit 15 for driving the heating coil 1, a heater drive circuit 19 for driving the heater 2 in the cooking cabinet, and a cooling fan 14. And a communication circuit 18 for inputting a signal from the operation unit 8 (equivalent to an operation board) to output a signal to the inverter circuit 15, the heater driving circuit 19, and the operation unit 8. It has a microcomputer 21 that outputs signals to the LCD 9, the buzzer 17, and the communication circuit 20 based on signal inputs from the temperature sensor 12, the operation switch 10, and the communication circuit 20. When the commercial power supply 22 is supplied to the heating drive unit 13 and the operation unit 8, the microcomputer 21 waits for a signal input from the operation switch 10. Here, when a signal is input from the left IH heating ON / OFF switch 10a3, switch acceptance notification is performed by the buzzer 17 and a predetermined display indicating the heating state is displayed on the left IHLCD. The microcomputer 21 also drives the inverter circuit 15 via the communication circuits 20 and 18 to energize the heating coil and operate the fan drive circuit 18 to drive the cooling fan 14. Here, the cooling fan 14 functions to suppress the temperature rise of the inverter circuit 15 and the heating coil 18.
[0027]
Next, when a signal is input from the roaster heating ON / OFF switch 10b3, switch acceptance notification is performed by the buzzer 17 and a predetermined display indicating the heating state is displayed on the roaster LCD. The microcomputer 21 also drives the heater drive circuit 19 via the communication circuits 20 and 18 to energize the heater 2 in the cooking cabinet and operate the fan drive circuit 18 to drive the cooling fan 14. Here, the cooling fan 14 mainly functions to suppress a rise in the temperature of the cooking cabinet outer shell. After the roaster heating is turned on, the microcomputer 21 receives a signal from the temperature sensor 12 in the operation unit 8 and constantly compares the signal with a predetermined temperature (85 ° C.) set in advance.
[0028]
When the temperature detected by the temperature sensor 12 is equal to or lower than 85 ° C., the heater 2 is turned on and off so that the temperature in the cooking cabinet is maintained at a predetermined temperature (210 ° C.), and the food in the cooking cabinet is cooked. If the temperature around the cooking cabinet rises due to extreme continuous use of roaster heating, failure of the cooling fan, or blocking of the cooling intake and exhaust holes, and the detected temperature exceeds 85 ° C, the microcomputer Reference numeral 21 stops the power supply to the heater 2 and notifies the buzzer 17 of a plurality of continuous sounds (here, eight times in succession) and a predetermined abnormality display on the roaster LCD.
[0029]
As described above, according to the present embodiment, by providing the operation board above the upper surface of the cooking chamber, the temperature sensor mounted on the operation board can be operated from the upper surface of the housing and the usability is improved. By detecting abnormal temperatures in the vicinity of the operation board, the abnormal temperature rise of equipment such as the operation board, operation board support components, and heating coil can be suppressed even in the event of a malfunction such as a cooling fan failure or continuous use of the roaster. Performance can be improved.
[0030]
In addition, by disposing the heating drive board on which a large number of large electronic components are mounted on the side of the cooking cabinet, it is possible to reduce the thickness of the appliance and increase the size of the cooking cabinet.
[0031]
In addition, mounting the temperature sensor on the operation board eliminates the need for a lead wire or the like for electrical connection to the temperature sensor, resulting in an inexpensive configuration.
[0032]
In this embodiment, the temperature sensor is described as being mounted on the operation board.However, even if the temperature sensor is provided near the outer periphery of the cooking chamber such as the operation board holder, the partition plate, and the heating coil section, except for the effect of being inexpensive, An equivalent effect can be obtained.
[0033]
【The invention's effect】
As described above, according to the present invention, it is possible to reduce the abnormal temperature rise of the operation board, the operation board supporting structure, and other devices, and improve the service life and reliability while having a convenient configuration that can be operated from the top surface of the housing. can do.
[Brief description of the drawings]
FIG. 1 is a side view illustrating the configuration of a cooking device according to an embodiment of the present invention. FIG. 2 is a top view illustrating the configuration of a cooking device according to an embodiment of the present invention. FIG. FIG. 4 is a circuit block diagram of a cooking device according to an embodiment of the present invention. FIG. 5 is a side view showing a configuration of a conventional cooking device.
1 heating coil (induction heating means)
2 heater (heating means)
5 Cooking room 8 Operation board 9 LCD (notification means)
12 temperature sensor 16 buzzer (notification means)

Claims (3)

Heating means for heating the food in the cooking cabinet, induction heating means for induction heating a pot or the like installed on the top of the housing, and an upper portion of the cooking cabinet for controlling the operation of the heating means or the induction heating means; A heating cooker having a temperature sensor for detecting an ambient temperature near the outside of the cooking cabinet, wherein when the temperature sensor detects a temperature equal to or higher than a predetermined value, the power supply to the heating means is stopped or suppressed. . The cooking device according to claim 1, wherein the temperature sensor is mounted on the operation board. The heating cooker according to claim 1, wherein a notifying unit for notifying that the temperature sensor has detected a predetermined temperature or higher is disposed on the operation board.

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