KR20030079595A - Defrost control method for microwave oven - Google Patents

Abstract

PURPOSE: A method is provided to achieve improved defrost performance by differentiating the defrost algorithms for the cases where a food turnover operation is performed and omitted. CONSTITUTION: A method comprises a step(100,110) of permitting a user to select a defrost menu and input the weight of the foodstuff to be defrosted; a step(120) of permitting a micro processor to read the defrost time which is stored in a memory in accordance with the input weight; a step(130) of permitting the micro processor to recognize the defrost time and control the defrost operation; a step(140) of judging whether the defrost time has lapsed; a step(150) of generating a beep sound for turnover of the foodstuff; a step(160) of judging whether a door is open; a step(170) of performing a defrost operation, if the door is open; a step(180) of judging whether the defrost time has lapsed; and a step(190) of displaying completion of the defrost operation.

Description

Defrost control method for microwave oven

The present invention relates to a thawing control method for a microwave oven, and more particularly, to a thawing control method for a microwave oven which can improve thawing performance when the flip is omitted.

The defrosting control of the conventional microwave oven was performed with the control as shown in FIG. 1 with or without flipping. That is, when the user puts the marine animal in the cooking chamber and closes the cooking chamber door and inputs the weight of the marine animal, the weight of the input marine animal is input to the microcomputer installed in the microwave oven. The microcomputer recognizes the preset thawing time according to the input thawing weight and controls the thawing for the set thawing time.

At this time, the total thawing time is divided into four stages, as shown in FIG. The time according to each step is also obtained by multiplying the predetermined constant (a) by the total thawing time. In addition, the output power level in each step also depends on a preset value.

That is, the first stage is 10% of the total thawing time, 100% output power, the second stage is 35% of the total thawing time, the 30% output power is controlled, and the third stage is 20% of the total thawing time. The output power is controlled at about 70% during the time, and the fourth stage is set to control at about 10% output power during the 35% of the total defrost time.

Therefore, the microcomputer controls the defrosting according to the first step during the time calculated at the set output power level, and when the time of the first step ends, the microcomputer controls the defrosting of the second step and the output power level according to the second step. . When the thawing control of the first and second stages is completed, a beep sound for the flipping process is generated.

Therefore, when the user starts to thaw and a beep sounds, the user flips it. After the flip is performed, the microcomputer then controls the thawing process in steps 3 and 4 to perform thawing of the flipped animal.

On the other hand, as shown in Fig. 1, the output power level is set high during the first and third steps during the entire thawing time. Of course, the output power level of the third stage is lower than that of the first stage, but the output power level of the three stages is relatively high compared to the second and fourth stages. This is for thawing control at a high output power level when the first thawing starts and after the flipping is performed for the first time.

As described above, in the conventional microwave thawing control method, thawing is controlled at a high output power level when the first thawing is performed and when the thawing is performed after the flipping is performed.

However, the conventional thawing control method of the microwave oven controls thawing in the same manner as in Fig. 1 even when the flipping process is omitted. That is, thawing control is performed regardless of whether the flip process is performed. Therefore, in the marine animals that omit the flipping process, there is a problem that the marine animals ripen while being partially thawed.

Accordingly, an object of the present invention is to provide a waiting time in which the output power is not provided for a predetermined time at the time of flipping, in a sea animal in which the flipping process is omitted, so that the thawing performance of the microwave oven can be improved by the latent heat of the sea animal. To provide a control method.

1 is a relation between output quantity and time when defrosting control of a microwave oven in the prior art;

2 is a control block diagram for thawing control of a microwave oven according to the present invention;

3 is a relation between output amount and time when defrosting control of a microwave oven according to the present invention;

4 is an operation flowchart for thawing control of the microwave oven according to the present invention;

Explanation of symbols on the main parts of the drawings

1: Input 3: Timer

5 memory 7 microprocessor

9: output power supply unit 11: display unit

13: Beep sound generating unit 15: Door open detection unit

A thawing control method for a microwave oven according to the present invention for achieving the above object comprises: a first heating step of performing thawing heating for a predetermined first predetermined time according to the weight of a sea animal; After performing the first heating step, controlling the output to 0 for a second predetermined time, and leaving the marine animal to stand; A second heating step of performing thawing heating for a predetermined third predetermined time again without performing the above step; After performing the second heating step, controlling the output to 0 for a predetermined fourth predetermined time, thereby preventing sea animals, wherein the second predetermined time and the fourth predetermined time are the same. It is characterized by setting.

Hereinafter, a method for controlling thawing of a microwave oven according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a configuration diagram for thawing control of the microwave oven according to the present invention.

The control panel unit installed in the front of the electric compartment of the microwave oven is provided with an input unit 1 for selecting and inputting various cooking menus. In addition to the input unit 1, the control panel unit includes various electric elements and components required for cooking control of a microwave oven.

That is, as shown in FIG. 2, a signal input through the input unit 1 is electrically connected to the microprocessor 7. Various cooking algorithms preset according to the specifications of the microwave oven are stored in the memory 5. In particular, the memory 5 stores an algorithm for thawing control of the present invention described below. In addition, the thawing time setting process according to the weight, output power level and the like are stored.

In addition, the present invention is provided with a timer (3), it is used to determine whether the elapsed time set in the thawing process. Therefore, the memory 5 and the timer 3 are connected to the microprocessor 7 so as to transmit and receive necessary signals.

In addition, the present invention includes an output power supply unit 9 for generating an output for thawing under the control of the microprocessor 7 and adjusting the output power level under the control of the microprocessor 7. Generally, the output power supply part 9 uses the magnetron which is an output source of a microwave oven.

Reference numeral 11 denotes a display portion. The display unit 11 displays time according to the progress of thawing, and the like, in particular, in the present invention, the time is not displayed until the time before the flipping is performed, and the time is displayed from the time of flipping.

The flip time point is notified to the user through the beep sound, and the beep sound is generated in the beep sound generating unit 13 under the control of the microprocessor 7. And a door opening detecting unit 15 for detecting the door opening of the microwave oven is included, the detection value of the door opening detecting unit 15 is transmitted to the microprocessor (7).

Next, a process for thawing control in the microwave oven according to the present invention having the above configuration will be described.

Figure 3 shows the relationship between the output amount and time for the thawing control in the microwave oven of the present invention, Figure 4 is an operation flowchart for the thawing control in the microwave oven of the present invention.

After the user puts the sea animal inside the cooking chamber and closes the door, the thaw is selected through the input unit 1 (step 100), and the weight of the sea animal is input (step 110). The input weight is transmitted to the microprocessor 7. The microprocessor 7 recognizes the input weight and reads the thawing time which is set according to the input weight from the memory 5 (step 120). At this time, the thawing time is set to two (a, b) on the basis of the time to be flipped.

That is, time a is a time t1 for performing thawing according to a set algorithm before the flipping takes place. The time t1 is a period P11 for controlling the thawing for 10% of the total thawing time at the maximum output amount (100%), and for a time of 35% of the total thawing time at the output amount of about 30%. It is divided into a section P12 for controlling thawing. The time of the sections of P11 and P12 is also set according to the weight. During the time t1, the time due to defrosting is not displayed on the display unit 11.

And time (b) is the time (t2 + t3 + t4) that thawing is performed after the beep sound according to the flipping is generated. The time (b) is a period (P13) for controlling the output to 0 for about 20% of the time (b) after the end of the time (a), the output amount of about 70% and 10% It is divided into sections P14 and P15 that control thawing for about 60% of the time b as an output amount, and sections P16 that control the output back to zero for the same time as the section P13. . During the time b, the remaining time of thawing is displayed on the display unit 11.

After recognizing the thawing time in the microprocessor 7 according to the algorithm as described above, the microprocessor 7 first controls the thawing of the P11 and P12 sections for a time (step 130).

On the basis of the time detected from the timer 3, when the thawing for the a time is completed, the microprocessor 7 generates a beep sound indicating that it is at the time of inversion through the beep sound generating unit 13 (150th). step).

After the beep sound is generated in step 150, the microprocessor 7 detects whether the door is opened and closed through the door open detection unit 15. The door opening detecting unit 15 is a sensor for detecting the opening of the door of the microwave oven. The user must open the door to turn the animal over. Therefore, the microprocessor 7 checks whether the door opening is detected through the door opening detecting unit 15 immediately after the beep sound is generated, and determines whether the flipping of the sea animal has been performed.

Therefore, when the door opening is detected by the door opening detecting unit 15 (step 160), the microprocessor 7 recognizes that the flip is performed. After the door opening is sensed in step 160, the thawing control is performed in the same manner as the conventional method.

First, as in step 170, defrost control such as section P3 and section P4 of FIG. This is because the sea animal is turned upside down, so even if the thawing control is performed with a high power, only a certain part does not cause an overthawing state. The thawing control of the 170th step is continuously performed for the b time, and the completion of the thawing is displayed on the display unit 11 as the b time ends (steps 180 and 190).

However, in step 160, if the door opening is not detected, the microprocessor 7 determines that the flipping is not performed. In operation 200, the thawing control is performed in the sections P13, P14, P15, and P16 of FIG. 3.

That is, the microprocessor 7 controls the output amount to zero for about 20% of the time b, and then resumes the output again at the time b with the output amount of about 70% and the output amount of 10%. The thawing is controlled for about 60% of the time. Finally, the output amount is controlled to 0 for a time of about 20% of the time b, thereby controlling thawing during time b.

In the control operation of step 200, the sections P13 and P16 are sections using latent heat remaining in the sea animal itself. Therefore, the thawing is performed for a predetermined time while the latent heat remaining in the sea animal is spread inside the sea animal in the state where no separate heat is applied from the outside. This operation is performed after heating for a predetermined time, and in the present invention, the flipping point is performed immediately before the end of thawing.

While the 200th step is performed, the display unit 11 displays the remaining time as the thawing proceeds for the time b (step 210). When the time (b) ends, the user is notified that the thawing is completed, and the thawing control operation is terminated (steps 220 and 190).

In controlling the output amount for thawing in each section in the present invention, the output level must satisfy the condition of P1> P4> P2> P5> P3 = P6.

As described above, the thawing control method of the microwave oven according to the present invention controls thawing by the same algorithm as in the prior art (FIG. 1) when flipping is performed, and thawing is controlled by the algorithm as shown in FIG. 3 when flipping is not performed. It is characterized by improving the thawing performance when the flipping is omitted. In particular, the present invention improves the thawing performance by providing a section in which the thawing is performed by the latent heat remaining in the sea animal itself by controlling the output amount to 0 for a predetermined time at the time of flipping and the end of thawing.

The present invention described above differentiates the thawing algorithm in the case of flipping and in the case of not flipping when the thawing dish is performed using a microwave oven. Therefore, the present invention solves the problem of over-thawing or ripening of a portion even when the flip is omitted, thereby obtaining an effect of improving thawing performance.

Claims (1)

A first heating step of performing thawing heating for a predetermined first predetermined time according to the weight of the sea animal; After performing the first heating step, controlling the output to 0 for a second predetermined time, and leaving the marine animal to stand; A second heating step of performing thawing heating for a predetermined third predetermined time again without performing the above step; After performing the second heating step, by controlling the output to 0 for a predetermined fourth predetermined time, comprising the step of preventing marine animals, And the second predetermined time and the fourth predetermined time are set to be the same.