KR100560216B1 - Micro wave oven and method for compensating auto cook time thereof - Google Patents

Abstract

The present invention is a microwave oven for driving a load such as a magnetron, a heater for cooking food, a key operation unit for various cooking control key input, and the automatic cooking time increase and decrease correction selection through the key operation unit affects the automatic cooking level A control unit for determining a code constant encoding a degree of influence and a cooking time adjustment ratio constant for each time when the time can be adjusted, and automatically adjusting the cooking time increase / decrease accordingly to minimize the influence on the cooking level according to the time change, and the control of the control unit. A microwave oven including a display unit for displaying various kinds of displays required is provided.

Description

Microwave oven and its automatic cooking time correction method {MICRO WAVE OVEN AND METHOD FOR COMPENSATING AUTO COOK TIME THEREOF}

1 is a view showing the configuration of a general microwave oven.

2 is a flowchart illustrating an automatic cooking time correction process using a conventional microwave oven.

Figure 3 is a block diagram showing the configuration of a microwave oven including an automatic cooking time correction apparatus according to the present invention.

4 is a flowchart illustrating an automatic cooking time correction process of the microwave oven according to the present invention.

<Description of Major Symbols in Drawing>

31: Key operation unit 14, 32: Sensor unit (infrared sensor)

33: micom 34: automatic cooking time correction unit

35: display unit 36: load driving unit

37: magnetron 38: heater

39: cooling fan

The present invention relates to a microwave oven, and more particularly, automatic cooking time can be corrected on a stage-by-stage basis, and in an automatic dish composed of a combination of heaters, the level of the cooking level for each stage is coded and reflected during automatic cooking. The present invention relates to an automatic cooking time compensating apparatus for a microwave oven capable of minimizing the influence on the cooking level and a method thereof.

In general, the microwave oven is a heating device that is heated while the microwaves output from the magnetron penetrates into the food.

In order to control the heating of food in the microwave more precisely, an infrared sensor is used. The infrared sensor is mounted on one side of the cavity to project food, and detects the temperature change of the surface of the food. By delivering to the microprocessor of the microprocessor, the microprocessor determines subsequent heating and control conditions based on the detected surface temperature of the food.

As shown in FIG. 1, a typical microwave oven includes a turntable 11 for placing food to be cooked, a magnetron 12 for generating electromagnetic waves and supplying them to the food in the cavity 10 through a waveguide. And a cooling fan 13 for cooling the heated magnetron 12, and an infrared sensor 14 for detecting the temperature of the food.

The operation of the microwave oven configured as described above is as follows.

First, when a user inputs a cooking command, a controller (not shown) drives the magnetron 12.

Then, the electromagnetic waves generated in the magnetron 12 are irradiated into the cavity 10 through the waveguide to heat the food.

The infrared sensor 14 outputs a voltage value according to the temperature of the food and the value is applied to the controller through a series of signal processing.

Therefore, the controller drives the magnetron 12 to heat the food until the temperature of the food reaches the target temperature.

In addition, the cooling fan 13 is operated while cooking is performed to cool the heated magnetron 12.

2 is a flowchart illustrating an automatic cooking time correction process using a conventional microwave oven.

Referring to FIG. 2, the automatic cooking correction process of the conventional microwave oven is configured to perform more / less correction (larger or smaller correction) for a predetermined time in the entire time range.

For example, suppose the automatic cooking time of a roast beef with a weight of 1 kg is set to 40 minutes.

Thereafter, the automatic cooking stage of the roast beef is divided into three stages, and stage 1 time is 10:00 (minutes), stage 2 time is 10:00 (minutes), and stage 3 time is 20:00 (minutes) for each stage. If set to, the total time is 40:00 (minutes).

That is, in the automatic cooking setting of the roast beef, each cooking step is divided by the appropriate number of stages according to the intensity of the output of the heater (S21), and the appropriate time is allocated to each of the divided stages (S22).

If you set the More / Less time correction to 1:00 (minutes), if you increase 5 more steps, the cooking time increases to 45:00 (minutes). Cooking time is reduced to 35:00 (minutes).

That is, in the case of beef dishes, when the user wants to increase / decrease time correction (S23), the user may set the increase / decrease step (More / Less step) and the reference time to correct the increase / decrease time (S24).

Therefore, since the conventional automatic cooking increase and decrease time correction process is a uniform time increase and decrease process, there is a risk that the cooking level will drop.

That is, the consumer arbitrarily increases or decreases the automatic cooking time because there is a big problem that the cooking fails because the cooking level cannot be increased when the automatic cooking time is corrected in the oven having a complicated heater algorithm.

The present invention has been made to solve the above problems, by coding the degree of whether or not to be affected by the time increase or decrease correction for each stage through the cooking test in advance to reflect this in the increase and decrease correction cooking It is an object of the present invention to provide a microwave oven and its automatic cooking time correction method that can make up for errors in cooking.

In addition, when the influence of time increase and decrease correction is small, the automatic cooking time adjustment step is divided according to the user's preference, according to the divided control step to determine a certain ratio according to the microwave oven that can provide a dish that suits the taste of each individual user And an automatic cooking time correction method.

In order to achieve the above object, according to an aspect of the present invention,

In a microwave oven for driving a load such as a magnetron and a heater for cooking food, a key operation unit for inputting various cooking control keys, and the degree of influence on the automatic cooking level when the automatic cooking time increment correction selection is selected through the key operation unit. A control unit for determining a code constant coded and a cooking time adjustment ratio constant for each step when the time is adjustable, and automatically adjusting the cooking time increase and decrease accordingly, thereby minimizing the influence on the cooking level according to the time change, and required by the control of the control unit. A microwave oven including a display unit for displaying various displays is provided.

The automatic cooking time correction method of the microwave oven according to the present invention comprises the steps of (a) dividing by a predetermined number of stages in consideration of the output level of the heater, and (b) allocating a predetermined time for each stage divided in the step (a) And (c) encoding the degree of influence on the cooking level for each stage through a cooking test in advance after the time allocation in the step (b), and (d) the code in the step (c). If it is possible to adjust the time after setting, dividing the automatic cooking time adjustment step and setting a time adjustment ratio constant that can correct the time at a constant rate according to the divided adjustment step, and (e) when selecting the automatic cooking time increase / decrease correction. And performing the automatic cooking time increase / decrease correction according to the code constant in step (c) and the time adjustment ratio constant in step (d).

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Here, in step (c), if the stage has the highest output of the heater or has a fatal effect on cooking when the time is adjusted, the code may be set to be impossible to adjust the time, and in step (d), the automatic cooking time The adjusting step may be divided in consideration of the user's preference.

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

Figure 3 is a block diagram showing the configuration of a microwave oven including an automatic cooking time correction apparatus according to the present invention.

Referring to FIG. 3, the microwave oven according to the present invention includes a key operation unit 31 for inputting various cooking control keys, a sensor unit 32 for detecting surface temperature of frozen food, an automatic cooking control program, and home cooking. The control unit 33 stores the data in advance and controls the entire microwave oven by the key signal of the key operation unit 31 and the detection signal of the sensor unit 32, and the control unit 33 And a display unit 35 for displaying various types and a load driver 36 for driving various loads such as the magnetron 38, the cooling fan 39a, and the buzzer 39b under the control of the controller 33. do.

In addition, the control unit 33 has a code constant encoding the degree of the influence on the automatic cooking level, that is, whether the time can be adjusted when the automatic cooking time increase / decrease correction selection is made through the key manipulation unit 31, and the step-by-step cooking when the time is adjustable. Since the automatic cooking time increase and decrease correction by determining the adjustment ratio constant, the automatic cooking time correction unit 34 for minimizing the influence on the cooking level according to the time change is included.

As described above, the present invention sets the time adjustment impossible for the stage that has a fatal effect on cooking during automatic cooking time increase / decrease correction, divides the cooking time adjustment step for each stage that can be adjusted for time, and sets the cooking time adjustment ratio constant for each step. Setting can minimize the effect on cooking level over time.

4 is a flowchart of an automatic cooking time correction process of the microwave oven according to the present invention.

Referring to Figure 4, look at the automatic cooking time correction process of the microwave oven according to the present invention.

First, in automatic cooking control such as roast beef, the cooking stage is divided by a proper number of stages in consideration of the output level of the heater (S41), and an appropriate time is allocated to each stage (S42).

In addition, it is coded to the extent whether or not to be affected by the time increase or decrease correction (More / Less) for each stage through the cooking test in advance (S43).

Here, it may be coded according to the degree of influence of the time increase / decrease correction, and when the degree of influence is large, it may be set to be impossible to adjust the time.

Thereafter, the user divides the automatic cooking time adjustment step, and sets a time adjustment ratio constant that can correct the time at a constant ratio according to the divided adjustment step (S44).

Here, the automatic cooking time adjustment step may be divided in consideration of the user's preference of meat cooking.

After that, if the user wants automatic cooking time increase / decrease correction (More / Less correction) (S45), by performing the increase / decrease correction according to the code constant and the time adjustment ratio constant (S46), the effect on the cooking level according to the time change is minimized. can do.

Table 1 shows the automatic cooking time table for stage-specific increase and decrease correction, Table 2 shows the time ratio constant table for each automatic cooking time adjustment step.

Table 1

Drinking water Microwave Oven (Kg) Weight of food (Kg) Bee Stage 1 Stage 2 Stage 3 roast beef                                          0.8 ~ 1.1 0.05 2/3 of the total time M: 27 sec. H: 6 sec. U: 0 L: Alternating with M. 250 ° C. Time increment: 60 sec. M: 15 seconds H: 10 seconds U: 10 seconds L: 0 250 ° C Time Increment: 40 seconds M: 11 seconds H: 6 seconds U: 0 L: 3 seconds 250 ° C. Time increment: 20 seconds Time adjustable

TABLE 2

Cooking Time Adjustment Steps One 2 3 4 5 6 7 Cooking Time Control Ratio 0.7 0.8 0.9 1.0 1.1 1.2 1.3

Hereinafter, with reference to Table 1 and Table 2 looks at the automatic cooking time correction process in the microwave oven according to the present invention.

For example, for automatic cooking of roast beef (0.05Kg), the stage 1 time is divided into three stages according to the output of the heater, the stage 1 time is 10:00 (minutes), the stage 2 time is 10:00 (minutes), and the stage Set 3 hours to 20:00 (minutes) so that the total time is 40:00 (minutes).

Then, if it is determined that the time of stage 2 has a sensitive influence on the cooking level in the increase / decrease correction, a code for fixing the time of stage 2 is added to stage 2.

That is, in Table 1, roast beef cooking is composed of three stages, and is the same as a general cooking time table except that whether or not time adjustment is indicated for each stage.

In particular, because Stage 2 is the highest output stage and is the most important stage in roast beef cooking, it is fixed as "time non-adjustable" even when cooking time changes.

In fact, if the cooking time of stage 2 is increased, a lot of smoke occurs during cooking, the upper part of the meat is burned a lot, and if the cooking time is reduced, the inside of the meat is less cooked.

However, in the case of "time controllable," the automatic cooking time adjusting step is divided into seven steps in consideration of the user's preference for meat cooking, and in each step, step 1 (0.7)-step 2 (0.8)-step 3 ( 0.9)-Step 4 (1.0)-Step 5 (1.1)-Step 6 (1.2)-Step 7 (1.3).

Here, if the time adjustment is not selected, if the weight of 1kg roast beef is selected, the total cooking time is 20 (= 1kg / 0.05kg) * (60 seconds + 40 seconds + 20 seconds) = 2400 seconds.

Also, if step 3 is selected for time adjustment (to cook less meat), the total cooking time is (20 * 0.9 * (60 seconds + 20 seconds)) + (20 * 40 seconds) = 2240 seconds.

Also, if step 6 is selected for time adjustment (to cook a little more meat), the total cooking time is (20 * 1.2 * (60 seconds + 20 seconds)) + (20 * 40 seconds) = 2720 seconds.

In this way, even if the time is adjusted, Stage 2, which has a fatal effect on cooking, does not change in time, and thus the probability of cooking failure is greatly reduced even if the user changes the cooking time.

That is, since the user does not understand the cooking algorithm configuration, it is possible to make up for the error of cooking that can be caused by simply changing the time.

As described above, the microwave oven and the automatic cooking time correction method according to the present invention are coded to increase or decrease the degree of time-sensitive correction by each stage through a cooking test or not. By reflecting in the corrected cooking, the user does not understand the composition of the cooking algorithm, so that the error of cooking that can be caused by simply changing the time can be compensated as much as possible.

In addition, when the influence of the time increase and decrease correction is divided into automatic cooking time adjustment step according to the user preferences, it is possible to provide a dish that suits the taste of each user by determining at a constant rate according to the divided adjustment step.

Claims (6)

In a microwave oven for driving a load such as a magnetron, a heater to cook food, A key operation unit for inputting various cooking control keys, When the automatic cooking time increase / decrease correction is selected through the key control unit, a code constant encoding the degree of the effect on the automatic cooking level is determined, and when the time can be adjusted, the step-by-step cooking time adjustment ratio constant is determined. The control unit to minimize the impact on the cooking level according to, And a display unit for displaying various kinds of display necessary under the control of the control unit. delete delete (a) dividing by a predetermined number of stages in consideration of the degree of output of the heater, (b) allocating a predetermined time for each stage divided in step (a); (c) encoding the degree of affecting the cooking level for each stage through a cooking test in advance after the time allocation in step (b); (d) if the time can be adjusted after setting the code in step (c), dividing the automatic cooking time adjustment step and setting a time adjustment ratio constant that can correct the time at a constant rate according to the divided adjustment step; , (e) performing automatic cooking time increase / decrease correction according to the code constant in step (c) and the time adjustment ratio constant in step (d) when selecting automatic cooking time increase / decrease correction. Automatic cooking time correction method for the range. The method of claim 4, wherein In the step (c), when the stage is the highest output of the heater or when the time has a fatal effect on cooking, the automatic cooking time correction method of the microwave oven, characterized in that for setting the code to the time adjustment impossible. The method of claim 4, wherein In the step (d), the automatic cooking time adjustment step may be divided in consideration of the user's preference, characterized in that automatic cooking time correction method of the microwave oven.

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