KR0142491B1 - Movement control device & method of microwave oven - Google Patents

Abstract

The present invention relates to automatic cooking control of a microwave oven, in particular, by automatically notifying the user of the cleaning time of the surface of the steam sensor during automatic cooking of the microwave using the steam sensor, the steam sensor due to foreign matter attached to the surface of the steam sensor First measuring means for detecting an output signal in response to the wind pressure of the steam sensor, first recording means for storing the measured value of the first measuring means, and recording of the first recording means so as to prevent malfunction A counter for counting the number of times, a representative value setting means for obtaining a representative value of the first recording means, second measuring means for detecting an output signal in response to steam of a steam sensor, and storing measured values of the second measuring means The present invention relates to a malfunction control apparatus and a control method of a microwave oven using a steam sensor including a control unit including second recording means.

Description

Malfunction control device and control method of microwave oven using steam sensor

1 is an internal configuration of a microwave oven equipped with a steam sensor for the present invention,

2 is a block diagram of a malfunction control apparatus for a microwave oven using a steam sensor according to the present invention;

3 is a flowchart illustrating a malfunction control method of the microwave oven using the steam sensor according to the present invention.

* Explanation of symbols for main parts of the drawings

1: fan motor 2: blower

3: first exhaust port 4: first exhaust port

5: 2nd exhaust vent 6: stove

7: Steam sensor 8: Orifice

9: 2nd outlet MAG: magnetron

HVT: High pressure transformer 10: Control panel

20: signal processor 30: controller

40: load driving unit 31: first measuring means

32: first recording means 33: counter

34: representative value setting means 35: second measurement means

36: second recording means

The present invention relates to automatic cooking control of a microwave oven, in particular, by automatically notifying the user of the cleaning time of the surface of the steam sensor during automatic cooking of the microwave using the steam sensor, the steam sensor due to foreign matter attached to the surface of the steam sensor The present invention relates to a malfunction control apparatus and a control method of a microwave oven using a steam sensor to prevent a malfunction.

In general, a microwave oven that controls automatic cooking using a steam sensor, as shown in FIG. 1, a high voltage transformer (HVT) generates a high frequency by applying a high voltage to the magnetron (MAG), due to this high frequency cooking chamber The food inside is heated.

On the other hand, the food heated as described above generates water vapor, which is formed by the blowing action of the fan motor (1) the first exhaust port (3) formed in the lower side of the side wall opposite the air outlet (2) formed on the upper side wall of the cavity The first discharge port 4 is discharged through the second discharge port 5 along the air path 6 through the second exhaust port 5 formed at the center of the cavity.

At this time, the steam discharged along the air path 6 is sensed through the steam sensor 7 which is a piezoelectric element attached to the inlet of the second discharge port 9, thereby controlling the automatic cooking by adjusting the appropriate heating time.

However, the conventional microwave oven which controls the automatic cooking by using the steam sensor as described above, the foreign material such as oil or dust adheres to the surface of the weight sensor due to long use of the microwave oven, the electrical output characteristics of the steam sensor There is a problem that the malfunction is changed, the food is overcooked by a malfunction of the steam sensor may cause a failure of the product, thereby causing a problem of undergrounding the life and reliability of the product.

Therefore, the present invention was devised to solve the above-mentioned problems of the prior art, by automatically notifying the user of the cleaning time of the surface of the steam sensor during the automatic cooking of the microwave using the steam sensor, thereby adhering to the surface of the steam sensor. It is an object of the present invention to provide a malfunction control apparatus and a control method of a microwave oven using a steam sensor to prevent the malfunction of the steam sensor caused by the foreign matter.

The present invention for achieving the object as described above, the operation unit for displaying a microwave operation and cooking progress, such as various cooking selection and time selection, and a signal processing unit for detecting and processing various signals necessary for cooking and safe driving, In a microwave oven comprising a control unit for cooking control while controlling the overall operation of the microwave oven, and a load driver for driving various loads by the control of the control unit, the first microwave for detecting an output signal in response to the wind pressure of the steam sensor Measuring means, first recording means for storing measured values of the first measuring means, a counter for counting the number of times of recording of the first recording means, representative value setting means for obtaining a representative value of the first recording means, and a vapor sensor Second measuring means for detecting an output signal responsive to steam and second recording means for storing measured values of the second measuring means. Characterized by consisting of a control unit.

In addition, the present invention for achieving the above object, the first process of determining whether the input key during automatic cooking is a cooking mode using a steam sensor, and in the cooking mode using a steam sensor to detect only by driving the fan motor A second step of setting a representative value of the output value due to the wind pressure of the used steam sensor. A third process of notifying the user of a foreign material removal request signal of the steam sensor when the set representative value is less than the reference value; a fourth process of controlling cooking by driving a load driving unit when the set representative value is higher than the reference value; In the case of continuously displaying the reference value or more, it is characterized in that the fifth step of completing the cooking process sequentially.

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

Microwave malfunction control apparatus using a steam sensor according to the present invention, as shown in Figure 2, the operation unit 10 for displaying the progress of cooking and microwave operation, such as various cooking selection and time selection, and cooking and Signal processing unit 20 for detecting and processing various signals required for safe driving, control unit 30 for cooking control while controlling the overall operation of the microwave, and load driver 40 for driving various loads under the control of the control unit A microwave oven comprising: first measuring means (31) for detecting an output signal in response to a wind pressure of a steam sensor; First recording means (32) for storing measured values of the first measuring means (31); A counter 33 for counting the number of times of recording of the first recording means 32; a representative value setting means 34 for obtaining a representative value of the first recording means 32; detecting an output signal in response to steam of a steam sensor Second measuring means (35) for performing; And a control section 30 including second recording means 36 for storing the measured values of the second measuring means 35.

Referring to the operation and effect of the present invention configured as described above in detail.

When the automatic cooking is performed using the steam sensor 7, the control unit 30 controls the load driving unit 40 to drive the fan motor 1 before driving the magnetron MAG. Wind is generated in (6) to give a wind pressure to the steam sensor (7).

The steam sensor 7 outputs a minute electrical signal by the wind pressure, and the controller 30 measures the value of the output signal at this time using the first measuring means 31, and then records the first recording means 32. Save through.

On the other hand, the maximum value among the output values of the steam sensor 7 due to the wind pressure stored in the first recording means 32 is set to the representative value by the representative value setting means 34, and by the representative value setting means 34. When the set representative value is compared with the reference value and the output signal is less than the reference value, the foreign matter removal request signal is transmitted to the user through the operation unit 10, thereby preventing malfunction of the vapor sensor 7 having the foreign matter attached thereto.

On the other hand, if the representative value set by the representative value setting means 34 indicates an output signal equal to or greater than the reference value, the controller 30 controls the load driver 40 to drive the magnetron MAG to perform automatic cooking. .

During the automatic cooking as described above, the controller 30 measures the output value of the steam of the steam sensor 7 by using the second measuring means 35 and stores the measured value through the second recording means 36.

On the other hand, if the output value of the steam sensor 7 by the steam stored in the second recording means 35 is smaller than the reference value compared to the reference value to continue cooking, while the output value of the steam sensor is more than the reference value The number of recordings of the initialized counter is counted to complete cooking when the output value of the counted counter continuously exceeds the reference value for a predetermined period.

A first process (100) of determining whether the input key during automatic cooking is a cooking mode using a steam sensor as shown in FIG. A second step 200 of setting a representative value of an output value due to the wind pressure of the detected steam sensor by driving only the fan motor in the cooking mode using the steam sensor; A third step 300 of notifying the user of a foreign material removal request signal of the steam sensor when the set representative value is lower than the reference value; A fourth process 400 of controlling the cooking by driving the load driving unit when the set representative value is greater than or equal to the reference value; When the value of the output signal continuously exceeds the reference value for a predetermined period of time, the operation is sequentially performed as a fifth process 500 for completing cooking.

The second process 200 includes a first step 201 of driving a fan motor in a cooking mode using a steam sensor; A second step 202 of initializing the counter (C = 1) after driving the fan motor; A third step (203) of measuring an output value due to the wind pressure of the steam sensor sensed by the driving of the fan motor using the first measuring means; storing the measured value measured by the first measuring means by using the first recording means A fourth step 204 of making; A fifth step 205 of counting the number of times the counter has been initialized; A sixth step 206 of comparing the value of the counter with the number of recording counts with the value of the reference counter; If the value of the counter in which the number of recording is counted is equal to or greater than the value of the reference counter, the operation proceeds sequentially to the seventh step 207 of setting the representative value to the maximum value.

The fourth process 400 includes a first step 401 of driving the load driver when the representative value set as the maximum value is greater than or equal to the reference value; A second step 402 of initializing a counter (C = 0) after driving the load driver; A third step 403 of measuring an output value by steam of the steam sensor sensed by driving of the load driving unit using the second measuring means; A fourth step 404 of storing the measured values measured by the second measuring means by using the second recording means; A fifth step 405 of comparing the output value of the steam sensor by the steam with a reference value; If the output value of the steam sensor is smaller than the reference value, cooking continues. If the output value of the steam sensor is equal to or greater than the reference value, the operation proceeds sequentially to the sixth step 406 of counting the number of times the counter is initialized.

As described in detail above, the present invention, by automatically notifying the user of the cleaning time of the steam sensor surface during the automatic cooking of the microwave oven using the steam sensor, thereby preventing malfunction of the steam sensor due to foreign matter attached to the surface of the steam sensor It is possible to improve the performance and life of the product by preventing the malfunction of the steam sensor, it is possible to improve the consumer's reliability of the product.

Claims (4)

Control unit 10 that displays microwave operation and cooking progress such as various cooking selections and time selection, signal processing unit 20 that detects and processes various signals necessary for cooking and safe driving, and controls the overall operation of the microwave oven. And a second measurement for detecting an output signal in response to the wind pressure of the steam sensor in the microwave oven comprising a control unit 30 for cooking control and a load driving unit 40 for driving various loads under the control of the control unit. Means (31); First recording means (32) for storing the measured value of the first measuring means (31); A counter (33) for counting the number of times of recording of the first recording means (32); Representative value setting means (34) for obtaining a representative value of said first recording means (32); First measuring means (35) for detecting an output signal responsive to steam of the steam sensor; Device for controlling malfunction of a microwave oven using a steam sensor, characterized in that it comprises a control unit (30) including a second recording means (36) for storing the measured value of the second measuring means (35). A first process (100) of determining whether a key input during automatic cooking is a cooking mode using a steam sensor; A second process of setting a representative value of an output value due to the wind pressure of the detected steam sensor by driving only the fan motor in the cooking mode using the steam sensor; A third step 300 of notifying the user of a foreign material removal request signal of the steam sensor when the set representative value is lower than the reference value; A fourth process 400 for controlling cooking by driving the load driving unit when the set representative value is equal to or greater than the reference value; If the value of the output signal is more than the reference value continuously for a predetermined period of time malfunction control method of the microwave oven using a steam sensor, characterized in that the sequential operation in the fifth process (500) to complete the cooking. The method of claim 2, wherein the second process (200) comprises: a first step (201) of driving a fan motor in a cooking mode using a steam sensor; A second step 202 of initializing the counter (C = 1) after driving the fan motor; A third step 203 of measuring an output value due to the wind pressure of the steam sensor sensed by the driving of the fan motor by using the first measuring means; A fourth step 204 of storing the measured values measured by the first measuring means by using the first recording means; A fifth step 205 of counting the number of times the counter has been initialized; A sixth step 206 of comparing the value of the counter with the number of recording counts with the value of the reference counter; And a seventh step (207) of setting a representative value to a maximum value when the value of the counter in which the number of recordings is counted is equal to or greater than the value of the reference counter. The method of claim 2, wherein the fourth process 400 comprises: a first step (401) of driving the load driver when the representative value set as the maximum value is greater than or equal to the reference value; A second step 402 of initializing a counter (C = 0) after driving the load driver; A third step 403 of measuring an output value by steam of the steam sensor sensed by the driving of the load driving unit using the second measuring means; A fourth step 404 of storing the measured values measured by the second measuring means by using the second recording means; A fifth step 405 of comparing the output value of the steam sensor by the steam with a reference value; If the output value of the steam sensor is smaller than the reference value, the cooking process continues. On the other hand, if the output value of the steam sensor is equal to or greater than the reference value, the operation is sequentially performed as a sixth step 406 of counting the number of times the counter is initialized. Malfunction control method of a microwave oven using a steam sensor.