JP3279249B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the control of heating energy for cooking food such as toast.

[0002]

2. Description of the Related Art Conventionally, when cooking such as toast is continuously performed using a heating cooker such as an oven toaster, the second and subsequent cookings are performed in accordance with an interval time as disclosed in Japanese Patent Application Laid-Open No. 6-221579. The energization time was shortened from the first time to prevent the baking color from becoming dark.

[0003] A conventional heating cooker will be described below. FIG. 3 is a circuit diagram of a conventional heating cooker. An AC power supply 1 is connected to a DC power supply 2 which receives the AC power supply 1 and generates a DC voltage. Further, a series circuit of a heating means 3 for heating the food and a heating means control means 4 for controlling the power supply to the heating means 3 is connected to the AC power supply 1. In addition,
The heating means 3 includes an upper heater 3a for heating the food from above.
And a lower heater 3b for heating the food from below. The heating means control means 4 includes a relay contact 4
a, relay coil 4b, transistor 4c, resistor 4
d, 4e. The output of the DC power supply 2
Power switch 5, relay coil 4b, relay coil 4
b, the transistor 4c is connected in series. Further, input means 6 for starting or stopping the operation, display means 7 for displaying the operation state, interval time measuring means 8 for measuring the time from the end of cooking to the start of the next cooking, A control means 9 receives a signal from the input means 6 and controls the energization time of the heating means control means 4 and the lighting control of the display means 7 based on the time measured by the interval time measuring means 8.

[0004] With this configuration, even after cooking and turning off the power switch 5, the interval time measuring means 8 and the like are operating. Therefore, if the power switch 5 is turned on again and the input means 6 is pressed, the toast or the like can be obtained. When cooking,
By measuring the interval time from the end of the previous cooking and energizing the heating means 3 for a time corresponding to that time, the effect of the rise in the internal temperature due to the previous cooking can be suppressed, and an optimum baking color can be obtained.

[0005]

However, in the above-described conventional configuration, even when the power switch 5 is turned off, power is supplied to the DC power supply 2 from the AC power supply to operate the interval time measuring means 8 and the like. Therefore, there is a problem that power is consumed even when the power switch 5 is turned off.

The present invention solves the above-mentioned conventional problems. When the power switch is turned off, the power supply from the AC power supply becomes zero. The aim is to optimize the cooking time even.

[0007]

In order to achieve this object, the present invention provides an interval time measuring means for measuring a time from the end of cooking to the start of the next cooking;
Control means for controlling the energizing energy to the heating means by controlling the heating means control means in accordance with the time measured by the interval time measuring means, and at least power for operating the interval time measuring means when the power switch is off And a heating cooker having a backup means.

With this configuration, the interval switch is backed up even when the power switch is turned off and the output of the DC power supply is not generated.

[0009] Further, by comprising charging / discharging means for charging during cooking and starting discharging from the end of cooking, and voltage measuring means for measuring the voltage of the charging / discharging means at the start of cooking, even when the power switch is turned off. Interval time can be measured,
A heating cooker that optimizes the cooking time even for continuous cooking can be obtained.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a DC power supply for converting an AC power supply into an input to generate a DC voltage, a power switch for connecting the AC power supply to the DC power supply, and a heating device for heating the food. Means, heating means control means for controlling the energization of the heating means, input means for starting or stopping the operation, and interval time measuring means for measuring the time from the end of cooking to the start of the next cooking. Control means for controlling the energization energy to the heating means by controlling the heating means control means according to the time measured by the interval time measurement means, and at least the power at which the interval time measurement means operates when the power switch is off. A heating cooker having a backup means for securing.

With this configuration, the interval time measuring means is backed up even when the power switch is turned off and the output of the DC power supply is not generated.

According to a second aspect of the present invention, there is provided a DC power supply for converting an AC power supply into an input to generate a DC voltage, a power switch for connecting the AC power supply to the DC power supply, a heating means for heating the food, and a heating means. Heating means control means for energizing the means, input means for starting or stopping operation, charging / discharging means for charging during cooking and starting discharging from the end of cooking, and charging / discharging means at the start of cooking. A heating cooker having a voltage measuring means for measuring and a control means for controlling energization energy to the heating means according to the voltage measured by the voltage measuring means.

[0013] With this configuration, even when the power switch is turned off, the interval time from the end of the previous cooking to the start of the cooking can be measured, and the temperature in the cooking chamber increases due to the previous cooking, and the cooking color becomes darker. The effect on performance can be prevented.

[0014] According to a third aspect of the present invention, the energizing energy to the heating means is controlled by controlling the energizing time of the heating means.

According to a fourth aspect of the present invention, the energization of the heating means is controlled by intermittently energizing the heating means.

[0016]

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram of an oven toaster showing a first embodiment of the present invention,
To the AC power supply 1, a DC power supply 2 that receives the AC power supply 1 and generates a DC voltage is connected via a power switch 5. Further, the AC power supply 1 includes a heating means 3 for heating the food and a heating means control means 4 for controlling the power supply to the heating means 3.
Are connected via a power switch 5 as well. The heating means 3 includes an upper heater 3a for heating the food from above, and a lower heater 3 for heating the food from below.
b. Further, the heating means control means 4 includes:
It is composed of a relay contact 4a and a relay coil 4b. The output of the DC power supply 2 is connected to a series circuit including a relay coil 4b, a relay coil 4b, and a transistor 4c.

Further, input means 6 for starting or stopping an operation, display means 7 for displaying an operation state, an interval time for measuring a time from the end of cooking to the start of the next cooking Measuring means 8,
A control unit 9 which receives a signal from the input unit 6 and controls the energization time of the heating unit control unit 4 and the lighting control of the display unit 7 based on the time measured by the interval time measurement unit 8.
It is composed of

The interval time measuring means 8 and the control means 9 are embodied by a microcomputer 10.
Reference numeral 11 denotes a backup unit for backing up the microcomputer 10, and the electric double layer capacitor 1
1a and a resistor 11b. The backup means 11 is connected to the DC power supply 2 via the diode 12.

The operation of the cooking device configured as described above will be described below. When the power switch 5 is turned on, the DC power supply 2 operates, and the output voltage of the DC power supply 2 is applied to the microcomputer 11. Here, when the input means 7 is pressed to start the operation, the toast starts, and the control means 9 turns on the heating means control means 4 until the predetermined burning color is reached, and energizes the heating means 3. During this time, the electric double layer capacitor 11a is charged by the output of the DC power supply 2 via the diode 12 and the resistor 11b. When performing the second toast, the interval time measuring means 8 waits for the completion of the first cooking,
The interval time until the second cooking starts is measured, and the toast time which is not affected by the rise in the internal temperature due to the first cooking is determined from the measurement result, and the control means 9 turns on the heating means control means 4. And heating means 3 for the determined time
Is turned on. After the energization ends, the interval time measuring means 8 starts measuring.

Next, when the power switch 5 is turned off, the connection between the AC power supply 1 and the DC power supply 2 is cut off. However, the microcomputer 10 is backed up by the backup means 11, and the interval time measuring means 8 continues the measurement. As a result, even if the power switch 5 is turned on and the input means 6 is pressed to start cooking before the temperature in the refrigerator is sufficiently lowered, the interval time measuring means 8 measures the time from the end of the previous cooking to the start of cooking. From the measurement result, the toasting time is determined so as to obtain a predetermined baking color. The control means 9 turns on the heating means control means 4 and energizes the heating means 3 for the determined time. As a result,
Even if the power switch 5 is turned on and off before the temperature in the refrigerator decreases, the correct interval time can always be measured, and cooking can be performed with the optimum roasting color.

With this configuration, even after cooking and the power switch 5 are turned off, the interval time measuring means 8 and the like are operating. Therefore, if the power switch 5 is turned on again and the input means 6 is pressed, the toast and the like are turned off. When cooking,
By measuring the interval time from the end of the previous cooking and energizing the heating means 3 for a time corresponding to that time, the effect of the rise in the internal temperature due to the previous cooking can be suppressed, and an optimum baking color can be obtained.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a circuit diagram of an oven toaster showing a first embodiment of the present invention. An AC power supply 1 is connected to a DC power supply 2 which receives an AC power supply 1 and generates a DC voltage via a power switch 5. Have been. Further, a series circuit of a heating means 3 for heating the food and a heating means control means 4 for controlling the energization of the heating means 3 is also connected to the AC power supply 1 via a power switch 5. The heating means 3 includes an upper heater 3a for heating the food from above and a lower heater 3b for heating the food from below. Also, the heating means control means 4
Is composed of a relay contact 4a and a relay coil 4b. The output of the DC power supply 2 includes a relay coil 4b,
A series circuit is connected to the relay coil 4b and the transistor 4c.

Further, input means 6 for starting or stopping the operation, display means 7 for displaying the operation state, charging during cooking and discharging after cooking is completed until the next cooking is started. , A voltage measuring means 14 for measuring the voltage of the charging and discharging means 13, and a control for controlling the energizing time of the heating means control means 4 and the lighting control of the display means 7 by the voltage measured by the voltage measuring means 14. Means 9 are provided.

The control means 9 and the voltage measuring means 14 are embodied by a microcomputer 10. The charging / discharging means 13 includes a transistor 13a, a capacitor 13b, and resistors 13c, 13d, 13e, and 13f.

The operation of the heating cooker configured as described above will be described below. When the power switch 5 is turned on, the DC power supply 2 operates, and the output voltage of the DC power supply 2 is applied to the microcomputer 11. Here, when the input means 7 is pressed in order to start the operation, the toast starts and the control means 9 turns on the heating means control means 4 and energizes the heating means 3 for a time until a predetermined baking color is reached. . During this time, the voltage measuring means 14
Is turned on, and the capacitor 13b is charged via the resistor 13e. When a predetermined time has elapsed and cooking is completed, the voltage measuring means 14 turns off the transistor 13a, and the capacitor 13b starts discharging by the resistor 13f. When the input means 6 is operated to perform the toasting again, the voltage measuring means 14 measures the terminal voltage of the capacitor 13b at that time. Since the measured terminal voltage decreases with the passage of time, the control means 9 estimates the interval time from the measurement result and determines the toast time so as to obtain a predetermined burn color. Then, the heating means control means 4 is turned on, and the heating means 3 is energized for the determined time.

Since the discharge of the capacitor 13b is performed regardless of whether the microcomputer 10 is operating or not, the power switch 5 is turned on after the first cooking is completed and before the second cooking is started. Irrespective of whether the temperature is off or not, even if cooking is started again before the temperature in the refrigerator does not drop, the correct interval time can always be estimated, and cooking can be performed with the optimum baking color.

With this configuration, even after cooking and turning off the power switch 5, if the power switch 5 is turned on again and the input means 6 is pressed, the voltage measuring means 14 measures the terminal voltage of the capacitor 13b at that time. Then, by estimating the interval time from the end of the previous cooking and energizing the heating means 3 at a time corresponding to the time, the effect of the rise in the internal temperature due to the previous cooking is suppressed, and the optimum baking color is obtained. Can be

In this embodiment, the heating means 3 is connected to the AC power supply 1 via the power switch 5, but the series circuit of the heating means 3 and the heating means control means 4 is directly connected to the commercial power supply, and then the power switch is turned on. 5 to the AC power supply 1
, The power switch 5 can be made inexpensive and small.

In this embodiment, the energizing energy of the heating means 3 is controlled by the energizing time. However, the energizing energy may be controlled by intermittently energizing the heating means 3.

[0030]

As described above, according to the first aspect of the present invention, when cooking is to be performed again, the interval time from the end of the previous cooking is measured or estimated, so that the temperature in the refrigerator due to the previous cooking is measured. Since the heating energy is determined by correcting the influence on cooking due to the high cooking temperature, optimal cooking can always be performed.

According to the second aspect of the present invention, even when the power switch is turned off, the interval time can be measured or estimated in a state where the power consumption of the AC power supply is zero. Electric power can be reduced to zero, and there is a great practical value.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an oven toaster according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram of an oven toaster according to a second embodiment of the present invention.

FIG. 3 is a circuit diagram of a conventional oven toaster.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 AC power supply 2 DC power supply 3 Heating means 4 Heating means control means 5 Power switch 6 Input means 8 Interval time measuring means 9 Control means 11 Backup means 13 Charge / discharge means 14 Voltage measuring means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F24C 7/04 301 A47J 37/08 H05B 3/00 330

Claims (4)

(57) [Claims] 1. A DC power supply for converting an AC power supply into an input to generate a DC voltage, a power switch for connecting the AC power supply to the DC power supply, a heating means for heating the food, and a heating means for controlling the energization of the heating means. Means control means, input means for starting or stopping the operation, interval time measuring means for measuring the time from the end of cooking to the start of the next cooking, and the time measured by the interval time measuring means. A heating cooker having control means for controlling the energization energy to the heating means by controlling the heating means control means in response thereto, and backup means for securing at least power for operating the interval time measuring means when the power switch is off. . 2. A DC power supply for converting an AC power supply into an input to generate a DC voltage; a power switch for connecting the AC power supply to the DC power supply; a heating means for heating the food; and a heating means for controlling the energization of the heating means. Means control means, input means for starting or stopping the operation, charging and discharging means for charging during cooking and starting discharging from the end of cooking, and voltage measuring means for measuring the voltage of the charging and discharging means at the start of cooking A control unit for controlling the energization energy to the heating unit according to the voltage measured by the voltage measurement unit. 3. The control of energizing energy to the heating means by controlling the energizing time of the heating means.
Or the heating cooker according to 2. 4. The heating cooker according to claim 1, wherein the energizing of the heating means is controlled by intermittently energizing the heating means.