JPS61272528A - Cooking device - Google Patents

Abstract

PURPOSE:To provide a user friendly cooking device having excellent reliability, by providing a control means, which stops cooking when cooking time data corresponding to a cooking time '0' is inputted at the time of cooking. CONSTITUTION:A DC voltage V is applied to a sliding resistor 50, which outputs a signal at a level corresponding to the operating position of a cooking-time setting knob. An AD converter 11 converts a voltage at the sliding terminal of the sliding resistor 50 into a digital signal based on a reference voltage Vref from a reference voltage generating circuit 12. The digital signal is supplied to a control part 13 as cooking time data. When the user returns the cooking-time setting knob to a '0' position, the cooking-time data corresponding to the cooking time '0' is inputted to the control part 13. The control part 13 immediately turns OFF a control switch 16 regardless of the counted value of the time, and the cooking can be stopped.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention converts a level signal corresponding to the operating position of a cooking time setting knob into a digital signal, imports it as cooking time data, and controls cooking execution. It relates to a cooking device that performs cooking.

[Technical background of the invention]

Generally, in a cooking device such as a microwave oven, a cooking time setting knob is provided on the operation panel, and the output of a volume resistor is controlled by an A/D converter depending on the operating position of the cooking time setting knob.
The (analog/digital) converter converts the signal into a digital signal, which is input into the control section as cooking time data to control the execution of cooking.

By the way, in such a microwave oven, during cooking,
To prevent the cooking time from being changed inadvertently, the signal from the volume resistor is completely ignored.For this reason, users who are familiar with mechanical motor timers will find it easy to turn the knob to 0.
``Even when I tried to return it to its position to stop cooking, it was impossible, making it very inconvenient and inconvenient to use.

[Purpose of the invention]

This invention was made in view of the above circumstances,
The purpose is to provide a highly reliable cooker that is convenient and easy to use, even for those who are familiar with mechanical motor timers, for example, by making it possible to stop cooking by operating the cooking time setting knob. .

[Summary of the invention]

This invention is provided with a control means that stops cooking when cooking time data corresponding to cooking time "0" is input during cooking.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In Figure 2, 1 is the main body of the microwave oven, and this main body 1
A door 2 is pivotably supported to open and close, and an operation panel 3 is provided on the front surface of the door. Body 1 corresponding to door 2
A heating chamber (not shown) is provided inside. The operation panel 3 has a digital display section 4 and a cooking time setting knob 5.
, a cooking start switch 6, etc. are provided from the upper part to the lower part.

FIG. 3 shows the control circuit.

Reference numeral 50 denotes a volume resistor, such as a sliding resistor, which outputs a signal at a level corresponding to the operating position of the cooking time setting knob 5, and a DC voltage V is applied to the sliding resistor 50. Then, the sliding terminal voltage of the sliding resistor 50 is A/D
(analog/digital) converter 11. This A/D converter 11 converts the sliding terminal voltage of the sliding resistor 50 into a digital signal based on the reference voltage V ref from the reference voltage generation circuit 12, and sends it to the control unit 13 as cooking time data. supply. The control unit 13 consists of a microcomputer and its peripheral circuits,
The digital display section 4 and the key manual section 60 are externally provided.
is connected. Here, the key human power section 60 outputs a signal corresponding to the operation of the cooking start switch 6.

On the other hand, numeral 14 is a magnetron which is a high frequency generator, and this magnetron 14 is connected to a commercial power station 11!17 via a high voltage transformer 15, a control switch (relay contact) 16, etc.

Here, the control switch 16 is controlled to be turned on or off by the control section 13.

Next, the operation of the above configuration will be explained with reference to FIG.

The power source 17 is turned on, the food to be cooked is placed in the heating chamber, and the door 2 is closed. When the cooking time setting knob 5 is operated, a voltage of a level corresponding to the operating position is generated at the sliding terminal of the sliding resistor 50, which is converted into a digital signal by the A/D converter, and the cooking time is set. as data
111111 section 13. The control unit 13 converts the input cooking time data into an actual cooking time, stores it in the internal memory, and displays it on the display unit 4.゛However, when the cooking start switch 6 is turned on, the control section 13 turns on the control switch 16, and the magnetron 1 is turned on.
4 to oscillate. In this way, high-frequency radio waves are emitted from the magnetron 14, and are supplied into the heating chamber to begin dielectric heating of the food to be cooked. In other words, cooking begins.

During cooking, the control unit 13 counts the elapsed time, and when the count value matches the cooking time stored in the internal memory, it turns off the control switch 16 and turns off the magnetron 1.
Stop the oscillation operation of step 4.

In other words, cooking is finished.

By the way, when cooking, the user turns the cooking time setting knob to °0.
When the cooking time is returned to the "position", cooking time data corresponding to the cooking time "0" is input to the control section 13.

Then, the control section 13 immediately turns off the control switch 16 regardless of the time count value to stop cooking.

In this way, since cooking is stopped immediately when the cooking time setting knob 5 is returned to the "O'" position, even a user who is accustomed to using a mechanical motor timer can easily stop cooking. This makes it possible to improve usability and, by extension, reliability.

In addition, in the above embodiment, the cooking time setting knob 5 is set to “
A switch may be provided that is activated when it is operated to the OP position, and the operational output of this switch may be taken in as cooking time data corresponding to cooking time "0". Furthermore, although the case where the cooking time setting knob 5 is of a rotary type has been described, it can be implemented in the same manner even if it is of a sliding type. Moreover, although the application to a microwave oven has been described, it can be similarly applied to other cooking appliances as long as they have a cooking time setting function.

〔Effect of the invention〕

As described above, according to the present invention, since a control means is provided that stops cooking when cooking time data corresponding to cooking time "0" is input during cooking, cooking can be stopped by operating the cooking time setting knob. This makes it possible to provide a highly reliable cooking device that is convenient and easy to use even for those who are familiar with using mechanical motor timers, for example.

[Brief explanation of drawings]

FIG. 1 is a flowchart for explaining the operation of an embodiment of the present invention, and FIG. 2 is a perspective view showing the appearance of the embodiment.
FIG. 3 is a diagram showing the configuration of a control circuit in the same embodiment. DESCRIPTION OF SYMBOLS 1...Main body, 3...Operation panel, 4...Digital display unit, 5...Cooking time setting knob, 11...Analog/digital converter, 13...Control unit, 50...
...Sliding resistor (volume resistor).

Claims (1)

[Claims] Corresponds to "0" during cooking in a cooker that converts a level signal corresponding to the operating position of the cooking time setting knob into a digital signal and imports it as cooking time data to control cooking execution. A cooking appliance characterized in that it is provided with a control means that stops cooking when cooking time data is input.