KR19980015191A - Self-diagnosis method of microwave oven - Google Patents

Abstract

The present invention relates to a method of self-diagnosing a microwave oven, the method comprising: a step (s1) of judging whether a command is input from a cooking input unit (15); and a step of judging whether a command inputted from the cooking input unit (S2). If the command inputted by the cooking input unit (15) is not a self diagnosis command, the step proceeds to step S3 according to a command inputted from the cooking input unit (15) (S10) in which the self-diagnosis is performed if the command is a self-diagnosis command. In this case, not only can the productivity of the small particles be constant when inspecting the microwave oven, but also the user can know the malfunction of the microwave oven before use It is possible to protect the user from the danger due to failure during use of the microwave oven.

Description

Self-diagnosis method of microwave oven

The present invention relates to a microwave oven, and more particularly, to a self-diagnosis method of a microwave oven in which a particle or a user inputs a self-diagnosis command and can inspect the operation state of the microwave oven.

1, the conventional microwave oven includes a direct current power source 10, a cooking input unit 15, a sensor unit 20, a high frequency generating unit 30, a display unit 40, and a control unit 50).

The direct current power supply unit 10 outputs a direct current voltage required for driving a commercial AC power supply voltage negative microwave oven supplied from an AC power input unit (not shown) The user inputs a command such as a cooking function, a cooking menu, and start / stop of a cooking operation, and the user selects the automatic cooking function or the manual cooking function by rotating in the left or right direction,

A dial button 53 for starting / stopping the cooking operation by the touching operation, a defrosting button 55 for defrosting the frozen food by the one-touching pressing operation, and a pressing operation by the one- And a cooking button 57 for warming the cold food.

The sensor unit 20 outputs data sensed by the sensor to the controller 50. The sensor unit 20 includes a weight sensor (not shown) for sensing the weight of the food in the cooking apparatus 90, And a gas sensor (not shown) for sensing a gas (water-jet) generated in the food in the water tank 90.

The high frequency generator 30 generates a high frequency to heat the food in the cooking liquor 90 according to a command input from the cooking input unit 15 and the display unit 40 is connected to the cooking input unit 15 (VFD) display unit 63 for displaying a cooking function and a cooking time, and an LED (not shown) for displaying an automatic cooking menu. The VFD display unit 63 displays a cooking function, a cooking time, Light Emitting Diode) display section 65. [

The control unit 50 receives the DC voltage supplied from the DC power supply unit 10 to initialize the microwave oven and controls the overall cooking operation. The control unit 50 controls the cooking operation based on the high frequency The controller 30 outputs a control signal to the generator 30 to heat the food in the cooking liquor 90 and outputs a control signal to the display unit 40 to display the cooking time and the cooking liquor.

In the conventional microwave oven configured as described above, when the power is supplied to the microwave oven, the DC power supply unit 10 converts the commercial AC power supply voltage supplied from the power source input unit (not shown) into a predetermined net voltage required for driving the microwave oven And the control unit 50 receives the DC voltage output from the DC power supply unit 10 to initialize the microwave oven according to the cooking operation.

At this time, the user inserts the food into the cooking chamber 90 and feeds the user through the cooking input unit 15 provided with many cooking input keys such as the dial button 53, the unfolding button 55 and the warm button 57, The control unit 50 outputs a control signal to the high frequency generator 30 and the display unit 40 according to the command and the high frequency generator 30 generates a high frequency And the display unit 40 displays the cooking function, the cooking time, and the cooking menu while heating the food in the cooking utensil 90.

However, since the conventional microwave oven configured as described above has no self-diagnosis function, when the small particles check the display unit and the sensor unit when the microwave oven inspects the microwave oven, there is a problem that the productivity is lowered. It is not known before use, and there is a problem in that the danger due to a failure during use of the microwave oven can not be prevented in advance.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a self-diagnosis method of a microwave oven, in which an operator or a user inputs a self-diagnosis command to inspect the entire operation state of a microwave oven have.

According to another aspect of the present invention, there is provided a method of diagnosing a microwave oven, the method comprising: detecting whether a command is input from a cooking input unit; determining whether the command input from the cooking input unit is a self- If the input command is not a self diagnosis command, the normal progress sound is output according to the command input from the cooking input unit, and if the command input from the cooking input unit is a self diagnosis command, the VFD display unit is operated to check the state of the VFD display unit Checking the state of the LED display unit by operating the LED display unit, checking the state of the gas sensor, weight sensor, EEPROM, and relay for displaying the model name on the VFD display unit, Is displayed on the VFD display unit The.

1 is a block diagram of a typical microwave oven;

2 is a schematic front view of a typical microwave oven;

3 is a flowchart showing a self-diagnosis operation sequence of the microwave oven according to the present invention

DESCRIPTION OF THE REFERENCE NUMERALS

15: a cooking input unit 20: a sensor unit

40: Display unit 50:

63: VFD display part 65: LED display part

Hereinafter, one embodiment of the present invention will be described in detail by tapping and sounding the points.

1 and 2, the same reference numerals and the same reference numerals are assigned to the same components as those of the conventional configuration, and a detailed description thereof will be omitted.

3, the method for diagnosing a microwave oven according to the present invention includes a step S1 for confirming whether or not a boiler instruction has been input to the cooking input unit 15 and a step S1 for determining whether a command input from the cooking input unit 15 is a self diagnosis A step S3 of performing normal progress according to a command input from the cooking input unit 15 if the command input from the cooking input unit 15 is not a self diagnosis command, And a step (s10) of performing self-diagnosis if the command input from the input unit 15 is a self diagnosis command.

The step S10 for performing the self-diagnosis includes a step S11 of checking the state of the VFD display part 63 by sounding the VFD display part 63 and a step S11 of operating the LED display part 65 to display the LED display part 65 (S13) of checking the state of the gas sensor, the weight sensor, the EEPROM 1, and the relay, and displaying the corresponding error code And a step S14 for displaying on the VFD display unit.

Hereinafter, the operation and effects of the self-diagnosis security of the microwave oven described above will be described.

First, when power is supplied to the microwave oven, the commercial AC power supply voltage supplied from an AC power input unit (not shown) in the DC power supply unit 10 changes to a predetermined DC voltage necessary for driving the microwave oven. And the respective driving circuits, and the control unit 50 receives the DC voltage output from the DC power supply unit 10 and initializes the microwave oven according to the cooking operation.

At this time, when the user inputs a desired command (for example, pressing the front face of the self-diagnosis command input dial button 53 for 10 seconds or the defrost button 55 and the warm button 57 at the same time) through the cooking input unit 15 The control unit 50 returns to step S1 if it is determined that the command has been input from the cooking input unit 15 and the command has not been inputted (if NO) And repeatedly performs a step S1 for judging whether a command has been inputted from the cooking input unit 15. [

If the command is input (YES) as a result of the completion of the step S1, the process proceeds to step S2, which considers whether the command input from the cooking input unit 15 is a self-diagnosis command. The control unit 50 determines whether the command input from the cooking input unit 15 is a self-diagnosis command, and if the command is not a self-diagnosis command (NO) And proceeds to a step S3 for performing the normal operation according to a command input by the cooking input unit 15 and then terminates.

If the instruction input from the cooking input unit 15 is an instruction for self diagnosis (YES), the VFD display unit 63 is operated during the stage (S10) in which self diagnosis is performed The control unit 50 outputs a control signal to the display unit 40 so that the VFD display unit 63 of the display unit 40 operates and is displayed.

The control unit 50 outputs a control signal to the display unit 40 to display the LEDs of the display unit 40 in a step S12 for checking the state of the LED display unit 65 by operating the LED display unit 65, The display unit 57 is operated and displayed.

Then, in a step S13 to be displayed on the model name sound VFD display section 63, the control section 50 outputs a control signal to the display section 40 so that the model name of the microwave oven is displayed on the VFD display section 63.

In step S14, the sensor unit 20 checks the state of the gas sensor (not shown) and the weight sensor (not shown) and outputs the result to the control unit 50. The control unit 50 controls the EEPROM And outputs the corresponding error code to the display unit 40 when an error occurs in the EEPROM, the relay, the gas sensor, and the weight sensor, and outputs the error code to the VFD display unit 63, The step S10 for performing the self-diagnosis after the error code is displayed is terminated.

As described above, the self-diagnosis method of a microwave oven according to the present invention is not only capable of constantly improving productivity when inspecting the microwave oven by adding a self-diagnosis function to the microwave oven, So that the user can be protected from the danger caused by the malfunction of the microwave oven.

Claims (2)

A step S2 for determining whether a command inputted by the cooking input unit 15 is a self-diagnosis command, a step S2 for confirming whether a command inputted by the cooking input unit 15 is a self diagnosis command, a step S2 for inputting a command from the cooking input unit 15, A step S3 for performing normal progress according to a command input from the cooking input unit 15 if the command is not a self diagnosis command and a step S3 for performing normal progress if the command input from the cooking input unit 15 is a self diagnosis command (S10). ≪ / RTI > The system according to claim 1, wherein the step (S10) for performing the self-diagnosis includes a step (S11) for operating the VFD display part (63) to check the state of the VFD display part (63) A step S12 for displaying the name of the motor on the VFD display part 63 and a step S13 for checking the state of the gas sensor, the weight sensor, the EEPRPM and the relay And displaying the corresponding error code on the VFD display unit (63) when an error occurs (S14).