KR19980057994A - How to control cooking mode of microwave oven - Google Patents

Abstract

According to the present invention, the cooking operation can be resumed without resetting the cooking condition after stopping the operation due to the temperature rise of the magnetron during the cooking operation by the magnetron, thereby eliminating operational inconvenience and minimizing the effect on the cooking. It is to provide a cooking mode control method of the stove.

To this end, the present invention, when the cooking run is made with the cooking time setting, the pan and the magnetron is driven and the cooking time is counted and the cooking time is terminated when the cooking time is terminated. If the current temperature of the magnetron is not higher than the predetermined reference temperature, the cooking time count is paused and the magnetron is stopped. If the current temperature of the magnetron is less than the preset reference temperature after stopping the magnetron operation, The operation of the magnetron and restarting the paused cooking time count is configured to eliminate the inconvenience of not only being reset during cooking but also resetting it again. In addition, since the influence on the cooking is minimized, the self-diagnosis display is performed, thereby increasing the confidence in the consumer.

Description

How to control cooking mode of microwave oven

The present invention relates to a method for controlling a cooking mode of a microwave oven, and more particularly, when the cooking operation by the magnetron detects overheating of the magnetron, the cooking of the microwave oven is restarted without resetting the cooking mode after the operation is stopped. It relates to a mode control method.

In general, an example of a cooking utensil is a microwave oven (microwave oven), which is different from cooking utensils using heat conduction heating methods such as briquettes and gas tables and cooking utensils using heat radiation heating methods such as electric ovens. The high-frequency electricity is applied to a microwave oscillating tube called magnetron to quickly cook food placed on a turntable (or tray).

The conventional microwave oven includes a cooking chamber 3 having a rotating plate 1 for placing food to be cooked as shown in FIG. 1 and a rotating ring 2 installed in an annular shape on the bottom of the rotating plate 1. And a door 4 for preventing external emission of electromagnetic waves generated when cooking food in the cooking chamber 3 and a plurality of buttons for allowing the microwave oven to input keys according to a user's preference. (5) and the like.

In addition, a door lock safety device 4a is installed on one inner surface of the door 4 to fix the door 4 to the main body, and the central portion of the door 4 can see the cooking state. 4b, an electromagnetic wave absorber 4c for preventing leakage of electromagnetic waves is attached to the inner side of the door (i.e., the portion which comes into contact with the main body).

Meanwhile, as shown in FIGS. 2 and 3, the magnetron 8 is fixed to the side wall plate 6 by bolts 7, and the magnetron 8 is mounted on the upper surface of the magnetron 8. A bimetal thermostat 10 (Thermostat), which opens and closes a contact according to a temperature change, is mounted by a bolt 9, and a fan 11 is fixedly installed around the magnetron 8.

And the configuration of the conventional microwave oven as described above with reference to Figure 1, the food to be cooked on the rotating plate 1 of the cooking chamber 3, the door 4 is completely closed, and then the button of the operation panel 5 By setting a desired cooking menu, time and output (cooking heating temperature), and inputting a cooking start command, the rotating plate 1 rotates under the control of the control unit 20, and at the same time, 11) rotates and the food in the cooking chamber 3 is cooked by the ultra-high frequency from the magnetron 8.

On the other hand, when performing the cooking operation by the ultra-high frequency of the magnetron 8, when the temperature of the magnetron 8 rises above a predetermined reference value, the contact point of the thermostat 10 is opened to turn off the input power of the microwave oven. When the temperature of the magnetron 8 falls below the reference value, the contact of the thermostat 10 is closed to supply power to the microwave oven.

In this case, when the thermostat 10 is turned off and on, the cooking operation that is in progress is stopped, and thus, the inconvenience of having to reset the cooking conditions is generated, and in particular, the automatic cooking and thawing operation may not be achieved. do.

In addition, although not shown in a separate drawing, a temperature sensor mounted inside the set is used as a means for controlling cooking operation according to a temperature change of a conventional magnetron. When using the temperature sensor, the temperature inside the set is set by a temperature sensor. If the measured value is above a certain temperature, an error indication (eg, ERR) is displayed on the display and the cooking is stopped. In this way, if the cooking is canceled, the operator operates after resetting the cooking conditions after pressing the cancel button. At this time, the reconditioning condition of the microwave oven is possible only when the temperature of the magnetron 8 drops.

That is, even when using the temperature sensor, if the temperature inside the set is excessively increased, the cooking is stopped with an error indication, and there is the hassle of resetting the cooking condition after inputting the cancel key again. Since cooking is performed, cooking is not immediately performed, and the state of the food is not good even when it is recooked. In addition, there is a problem in that the temperature of the magnetron 8 can not be measured accurately because the temperature sensor is in the set.

Accordingly, the present invention has been made in view of the above-mentioned problems, and the cooking operation can be solved by resuming the cooking operation without resetting the cooking condition after stopping the operation due to the temperature rise of the magnetron during the cooking operation by the magnetron. It is an object of the present invention to provide a cooking mode control method of a microwave oven to minimize the effect on cooking.

In order to achieve the above object, the present invention provides a cooking execution step of stopping the cooking operation when the cooking time is completed by counting the set cooking time as well as driving the pan and the magnetron when the cooking execution is made with the cooking time setting; When the cooking time is not finished during the early execution step, if the current temperature of the magnetron is higher than the preset reference temperature, the cooking function pauses and stops the operation of the magnetron. After the stop step, if the current temperature of the magnetron is less than the predetermined reference temperature is characterized in that it comprises a cooking function redo step of restarting the operation of the magnetron and the paused cooking time count.

1 is a view showing the appearance of a typical microwave oven,

Figure 2 is an exploded perspective view showing the internal configuration of the electric chamber side of the microwave oven shown in Figure 1,

FIG. 3 is a view illustrating a coupling state of electronic components of the microwave oven illustrated in FIG. 2;

4 is a block diagram of a microwave oven to which the present invention is applied;

5 is a flowchart illustrating a magnetron control method using a temperature sensor according to a preferred embodiment of the present invention;

6 is a diagram illustrating an example of a self-diagnosis display according to an embodiment of the present invention.

〈Description of the symbols for the main parts of the drawings〉

1: rotating plate 2: rotating ring

3: kitchen 4: door

5: operation panel 6: side wall plate

7,9: bolt 8: magnetron

10: Thermostat 11: Fan

20: control unit 22: power supply unit

24: interrupt unit 26: buzzer driving unit

28: buzzer 30: display unit

32: relay drive section 34: magnetron relay

36: fan relay 38: temperature sensor

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a block diagram of a microwave oven to which the present invention is applied, and the microwave oven to which the present invention is applied includes a control unit 20 which collectively controls the operation of the entire microwave oven, and a control signal waveform required by the control unit 20. Under the control of the control unit 20, the buzzer driver 26 for driving the alarm sound buzzer 28 so as to inform any operation state under the control of the control unit 20. A relay driver 32 for driving the magnetron driving relay 34 and the fan driving relay 36 on and off, a power supply unit 22 for supplying power required by each part of the microwave oven, Power is applied from the power supply unit 22 in parallel to the display unit 30 for displaying the cooking state and various processing conditions of the microwave oven, and the inside of the electric room inside the microwave oven (ie, the upper surface of the magnetron). Magnet Sensing the temperature of the magnetron according as the operation comprises a temperature sensor unit 38 are applied to a control unit 20.

In addition, the temperature sensor unit 38 may be formed of a thermistor.

Subsequently, a cooking mode control method of the microwave oven according to the present invention will be described with reference to the flowchart of FIG. 5 based on the device configured as described above.

The operator puts the food to be cooked into the cooking chamber 3, and then sets a cooking time using a button on the operation panel 5, and a cooking start command after the cooking time setting step 50. Proceeding to step 52, a cooking start command of food is input. In the cooking start command step 52, when a command indicating that cooking starts is inputted, the controller 20 controls the relay driver 32 to activate the magnetron relay 34 and the fan relay 36. The fan 11 and the magnetron 8 driving the fan and the magnetron driving step 54, and the fan and the magnetron driving step 54 proceed to the cooking time counting step 56 and the controller 20. The cooking time set in step is counted. Thereafter, during the cooking time counting step 56, it is determined whether the current temperature of the magnetron 8 is a preset reference temperature range (for example, between 80 ° and 100 °) based on the signal from the temperature sensor unit 38. It is sent to the temperature comparison determination step 58.

If the current temperature of the magnetron 8 is less than or equal to a preset reference temperature (for example, 100 degrees or less) in the temperature comparison determination step 58, the self-diagnosis non-display step 60 is not performed. Proceeds to the set time comparison determination step 62 to determine whether the set cooking time has been reached, and if the set cooking time has not been reached, the process returns to the pan and magnetron driving step 54 and repeats the subsequent steps and operations. Done.

On the other hand, in the temperature comparison determination step 58, if the current temperature of the magnetron 8 is equal to or greater than a predetermined reference temperature (for example, 100 degrees or more), the control unit 20 stops counting to pause the cooking time counting up to now. Proceeding to step 64, after the count stop step 64, the self-diagnosis display step 66 is performed so that an external operator can recognize the current situation. According to the self-diagnosis display operation in the self-extinguishing display step 66, the phrase self-diagnosis is displayed on a predetermined portion on the display unit 30 as exemplarily shown in FIG.

Subsequently, the magnetron driving stop step 68 is transferred to the controller 20 to control the relay driver 32 to deactivate the magnetron relay 34 to stop the driving of the magnetron 8. At this time, only the fan 11 is rotated.

Subsequently, the control unit 20 determines whether the cooking time up to the time when the count is paused is equal to the set cooking time. Returning to the temperature comparison determination step 58, it is determined whether the current temperature of the magnetron 8 is continuously higher than the preset reference temperature (for example, 100 degrees), and the subsequent operation is repeated.

Thereafter, when the current temperature of the magnetron 8 reaches a preset cooking time in a state where the current temperature of the magnetron 8 is lower than a preset reference temperature (eg, 100 degrees) during the set time comparison determination step 70, the controller 20 ends cooking. Let's go.

In addition, this invention is not limited only to the above-mentioned embodiment, It can implement by modifying and modifying within the range which does not deviate from the summary of this invention.

According to the present invention as described above, if the magnetron temperature is higher than the reference temperature during cooking, the cooking time count operation is paused, the magnetron drive is stopped, and if the magnetron temperature is lowered by the fan drive, the cooking time count is lower than the reference temperature. And since the magnetron drive is resumed and cooking is performed for a set cooking time, the inconvenience of not only resetting during cooking but also resetting is eliminated.

In addition, since the influence on the cooking is minimized, the self-diagnosis display is performed, thereby increasing the confidence in the consumer.

Claims (2)

When the cooking run is made with the cooking time set, the pan and the magnetron are driven, and the cooking run step of counting the set cooking time to stop the cooking operation when the cooking time ends, A step of suspending a cooking function to stop the driving of the magnetron and to stop the cooking time count when the current temperature of the magnetron is higher than a preset reference temperature while the cooking time set during the early execution step is not finished; And a cooking function resuming step of restarting the driving of the magnetron and the paused cooking time count when the current temperature of the magnetron is less than or equal to a preset reference temperature after the cooking function pausing step. The method according to claim 1, further comprising a self-diagnosis display step of performing self-diagnosis display when the cooking time count is paused and the driving of the magnetron is stopped.