KR100601430B1 - Method for processing error of microwave range - Google Patents

Abstract

The present invention relates to a method for processing an error in a microwave oven. When a microwave oven generates a hardware error while a timer and an oscillator are driven to operate a cooking operation, the timer and the oscillator are divided according to the error type. The error handling method of the microwave which can solve the inconvenience of a user in using a microwave by processing it is published.

The error processing method of the microwave oven includes an error processing method of a microwave oven equipped with a timer, including: starting cooking of food using the timer, and an error signal to the microwave while the timer and cooking operation are in progress. Generating a signal, determining whether the generated error signal is a key short error signal, and if the error signal is a key short error signal, the microcomputer cancels the timer and cooking operation. In case of an error signal other than a key short error, only the cooking operation is cancelled.

Microwave oven, timer, microcomputer, key short error

Description

Method for processing error of microwave range

1 is a block diagram schematically showing the configuration of a microwave oven according to the present invention.

2 is a circuit diagram illustrating a timer unit of FIG. 1.

3 is a flowchart showing an error processing method of a microwave oven in accordance with the present invention.

<Description of Reference Symbols for Main Parts of Drawings>

110: input unit 120: microcomputer

130: display unit 140: oscillation unit

150: timer unit 152: first switch

154: time motor 156: second switch

160: cooking chamber 162: lamp

164: gear motor 168: fan motor

170: power

The present invention relates to a microwave oven, and more particularly, to an error processing method of a microwave oven, which processes an error according to an error type when an error occurs in the microwave oven.

In general, a microwave oven cooks food using microwaves generated by a special two-pole vacuum tube called magnetron. When food is put in the microwave and the microwave is operated, microwaves generated by the magnetron are guided through the output antenna into the sealed oven to be reflected by the surrounding metal walls and absorbed by the food.

The absorbed electromagnetic energy vibrates water molecules in the food to generate heat to cook the food. At this time, when the microwave goes straight and is reflected from the surrounding metal surface, the traveling wave and the reflected wave are combined to create a strong and weak electric field. This heating block prevents electromagnetic waves and evenly rotates the food to irradiate the food.

Originally, microwaves are electromagnetic waves with a high frequency of about 2,450MHz. The materials made of air, glass, paper, etc., transmit well, but they are reflected when they encounter metal, and are easily absorbed by food and water. The stove uses the properties of these electromagnetic waves to heat food.

That is, when microwaves hit water molecules of food, the water molecules are rotated to obstruct the molecular arrangement in the food, and the minute rotational movement of these water molecules generates heat and cooks food.

In addition, recently developed microwave ovens are equipped with a heater using the heat of resistance of the heating wire, such as the upper or rear of the cooking chamber, so that the surface of the food is directly heated according to the heating of the heater in addition to the cooking function by the high frequency, such as bread or fish To allow cooking.

Such a microwave oven is typically provided with a timer function, so that the user can arbitrarily set the required cooking time or automatically set the cooking time according to the type of food to be cooked. Therefore, when the operation of the microwave is started, the timer is turned on to start the cooking operation, and when the set cooking time elapses, the timer is turned off to end the cooking operation.

While a timer and cooking operation are performed in a microwave oven having a timer function according to the prior art, when a hardware error occurs in the microwave, only the cooking operation is canceled for all errors without distinguishing the error type, and the timer operation is not canceled. No. In this case, when the error is a key short error, the button is not recognized and the power of the microwave should be cut off, but the problem of canceling the timer operation has occurred.

In addition, when a hardware error occurs in the microwave oven while the timer and the cooking operation are in progress, the timer and the cooking operation are canceled for all errors regardless of the error type. In this case, since the timer operation does not work, there is a problem in that user inconvenience increases in using the microwave oven.

Accordingly, an object of the present invention is to solve the above-mentioned problems, according to the type of error when a hardware error occurs in the microwave while the timer and the oscillator of the microwave are driven and the cooking operation is in progress. The present invention provides an error processing method of a microwave oven, which can solve a user's inconvenience in using a microwave oven by classifying and treating an oscillator.

Another object of the present invention is that while the timer and the oscillation unit of the microwave is driven and the cooking operation is in progress, when the key short error occurs, the timer and the oscillator are canceled so that the timer function is canceled when the key short error occurs. When an error other than an error occurs, only the oscillator is canceled and the timer function is operated so that the inconvenience caused by the failure of the timer function is provided.

In order to achieve the above object, the error processing method of the microwave oven according to the present invention,

In the error processing method of the microwave oven with a timer,

a) starting cooking of the food using the timer;

b) generating an error signal in the microwave during the timer and cooking operation;

c) determining, by the microcomputer, whether the generated error signal is a key short error signal; And

d) canceling the timer and cooking operation in the microcomputer when the error signal is a key short error signal, and canceling only the cooking operation when the error signal is an error signal other than a key short error.

The canceling of the timer and cooking operation in step d) is canceled by turning off the first switch connected to the oscillator which performs the timer and cooking operation when an error occurs, and canceling only the cooking operation in step d) is performed. The second switch connected to the oscillator for performing the cooking operation is canceled by turning off an error.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The descriptions in the various embodiments are only shown and limited by way of example and without intention other than the intention to help those of ordinary skill in the art to more thoroughly understand the present invention, and thus the scope of the present invention. It should not be used as a limitation.

1 is a block diagram schematically illustrating a configuration of a microwave oven according to the present invention, with reference to the accompanying FIG. 1 to describe the microwave oven according to the present invention.

Referring to FIG. 1, the microwave oven according to the present invention includes an input unit 110, a microcomputer 120, a display unit 130, an oscillator 140, a timer unit 150, and a heating chamber 160. It includes.

The input unit 110 is composed of input keys for setting and inputting various conditions such as cooking selection, cooking time, operation start and end of the microwave.

The microcomputer 120 displays an operation command input from the input unit 110 including a programmable microcomputer on the display unit 130 and operates the oscillator 140 and the timer 150 according to the operation command. Let's do it.

Particularly, in the present invention, when the timer 150 and the oscillator 140 are driven and a hardware error of the microwave occurs during the cooking operation of the microwave, it is responsible for controlling the timer and the oscillator. do. For example, when a key short error occurs during a hardware error of the microwave oven, the operation of the timer unit 150 and the oscillator 140 is canceled, and an error other than a key short error such as a thermistor open or a short occurs. In this case, only the operation of the oscillator 140 is programmed to be cancelled.

The display 130 displays an input operation command and a state in which the operation is in progress so that the user can see it.

The oscillator 140 includes a magnetron generating high frequency, a cooling fan cooling the magnetron, a heater voltage required for the operation of the magnetron, a high voltage transistor for generating a DC high voltage, a high voltage capacitor, a high voltage diode, and the like.

The timer unit 150 plays a role of turning on / off the oscillator at the start or end of the set time when the user sets a required cooking time in advance or the cooking time is automatically set according to food. In addition, the timer unit 150 is applied after the external power is applied to the oscillation unit, and even after the time switch is turned on to operate after a predetermined time (for example, 20ms) to prevent overload of the oscillation unit and damage to the microwave oven.

In addition, when a hardware error occurs in the microwave oven, the timer unit 150 is turned off together with the oscillator if the error is a key short error, and is kept on if the error is other than a key short error.

The cooking chamber 160 may include a heating plate for heating food, a tray into which food is inserted, a tray motor for rotating the tray, a lamp, and the like.

FIG. 2 is a circuit diagram illustrating the timer device of FIG. 1.

As shown in FIG. 2, the timer unit 150 of the microwave oven according to the present invention includes a first switch 152, a time motor 154, and a second switch 156.

The first switch 152 connects one end of the power cord 170 and the second switch 156, and is turned on / off by driving of the time motor 154 having a plurality of gears. The power is connected to or disconnected from the lamp 162, the gear motor 164, and the fan motor 166.

The time motor 154 includes a plurality of rotating gears, and when the user's time setting or automatic time setting is completed, the time motor 154 is driven to operate the first switch 152 and the second switch 154.

The second switch 156 connects the other end of the first switch 152 and the oscillator 140, and like the first switch, selectively turns on / off the oscillator 140 by driving a time motor. That is, power is supplied to the lamp 162, the gear motor 164, the fan motor 166, and the like when the switch is off, and power is supplied to the oscillator 140 when the switch is on. Accordingly, when the second switch 156 is turned on, high frequency radiation is emitted from the magnetron connected to the oscillation unit to enable cooking of food.

The operation of the timer of the microwave oven according to the present invention having the above-described configuration will be described.

When the cooking operation of the microwave oven is started, the microcomputer 120 drives the time motor 154 to turn on the first switch 152 to operate the lamp, the gear motor, the fan motor, and the like, and at the same time, the second The food is cooked by turning on the switch 156 to operate the oscillator 140 to generate a high frequency wave.

When a hardware error of the microwave oven occurs while the timer unit 150 and the oscillator 140 are driven to cook, the microcomputer 120 switches the first switch if the generated error is a key short error. 152 is turned off to cancel the operation of the timer 150 and the oscillator 140, and if the generated error is an error other than a key short error such as thermistor open or short, the first switch is in an on state. In this case, only the operation of the oscillator 140 is canceled by turning off the second switch 156.

3 is a flowchart showing an error processing method of a microwave oven according to the present invention in detail. Referring to the attached FIG. 3, an error processing method of the microwave oven according to the present invention will be described in detail as follows.

First, a user starts cooking food using a timer function (S100).

The timer may be automatically set by the user in advance by setting a time or by selecting food.

Subsequently, the timer unit and the oscillation unit of the microwave are driven to proceed with the cooking operation of the food (S102).

The microcomputer turns on the first switch by driving a time motor constituting the timer in response to a user's start command. Therefore, power is applied to the lamp, the gear and the fan motor connected to the first switch.

In addition, the microcomputer drives the time motor constituting the timer to turn on the second switch to apply power to the oscillator connected to the second switch. Therefore, high frequency is generated through the magnetron.

Subsequently, when a hardware error signal is generated in the microwave (S104), the microcomputer determines whether the generated error signal is a key short error signal (S106).

Subsequently, when the error signal is a key short error signal, the operation of the timer unit and the oscillator is canceled (S108). When the error signal is an error signal other than the key short error signal, only the operation of the oscillator is canceled ( S110).

Therefore, if the generated error is a key short error, the microcomputer 120 cancels all operations of the timer unit 150 and the oscillator 140 by turning off the first switch 152. If the error is other than a key short error such as a thermistor open or a short, the first switch is kept on and the second switch 156 is turned off to cancel only the operation of the oscillator 140.

As described above, according to the error processing method of the microwave oven according to the present invention, when a key short error occurs while the timer and the oscillator are driven and the cooking operation is in progress, both the timer and the oscillator are canceled and the key short error occurs. When the timer function is canceled and an error other than a key short error occurs, only the oscillator is canceled and the timer function is operated to reduce the inconvenience caused by the inoperative timer function.

Therefore, when the microwave oven's timer and oscillator are driven and the cooking operation is in progress, when a hardware error of the microwave occurs, the timer and the oscillator are processed according to the type of error. You can eliminate the inconvenience.

The error processing method of the microwave oven according to the present invention is not limited to the above embodiments, and can be variously designed and applied without departing from the basic principles of the present invention. It is obvious to those who have it.

As described above, according to the present invention, when a microwave oven generates a hardware error while the timer and the oscillator of the microwave are driven and the cooking operation is performed, the microwave oven may be classified and processed according to the type of the error. Has the effect of eliminating the inconvenience of the user in the use of.

In addition, in the present invention, while the timer and the oscillation unit of the microwave is driven and the cooking operation is in progress, when the key short error occurs, the timer and the oscillator are canceled so that the timer function is canceled when the key short error occurs. If an error occurs other than this, only the oscillator is canceled and the timer function is operated to reduce the inconvenience caused by the timer function not operating.

Claims (3)

In the error processing method of the microwave oven with a timer, a) starting cooking of the food using the timer; b) generating an error signal in the microwave during the timer and cooking operation; c) determining, by the microcomputer, whether the generated error signal is a key short error signal; And d) canceling the timer and cooking operation in the microcomputer when the error signal is a key short error signal, and canceling only the cooking operation when the error signal is an error signal other than a key short error. Microwave error handling method. The method of claim 1, The canceling of the timer and cooking operation in step d) is canceled by turning off the first switch connected to the oscillator which performs the timer and cooking operation when an error occurs. The method of claim 1, Canceling the cooking operation only in the step d) is canceled by turning off the second switch connected to the oscillator which performs the cooking operation when an error occurs.

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