KR20040021258A - Microwave oven having toaster function and method for controlling the same - Google Patents

Abstract

PURPOSE: A microwave oven range having a toaster function and a method for controlling the same are provided to output a warn message if an inner temperature of a toaster gets higher than a predetermined temperature. CONSTITUTION: A first key input part(301) is formed to input commands for operating a microwave oven and selecting various menus. A second key input part(302) is formed to input commands for operating a toaster and selecting various menus. A micro computer(304) outputs the corresponding control signal according to the inputted command from the first key input part or the second key input part, and controls driving of the corresponding load by judging whether a temperature detected by a temperature sensor(310) is higher than a predetermined temperature. A first load driving part(305) drives a microwave oven load. A second load driving part(306) drives a toaster load. A warn message output unit(309) outputs a warn message to a user according to the control signal received from the micro computer.

Description

Microwave oven having toaster function and method for controlling the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, to a microwave toaster and a control method thereof, which enable control of a load driving and output of a warning message when an internal temperature of the toaster rises above a certain temperature in a microwave oven.

Generally, a microwave oven is a device for heating a heating object using a microwave. Looking at the configuration, the heating chamber (2) for supplying microwaves to embed the heating object is provided inside the cavity assembly (1), the heating chamber (2) is configured to open and close by the door (4) It is.

In addition, an electric field chamber 10 for generating microwaves is provided at one side of the heating chamber 4, and the electric field chamber 10 is configured to be covered by the outer casing 6. Inside the electric compartment 10, a magnetron 12 for oscillating microwaves, a high voltage transformer 14 for applying a high pressure to the magnetron 12, and an electric component to cool and heat the inside of the heating chamber 2 Blowing fans (not shown) and the like are provided for forming an airflow via the air.

By the way, the conventional microwave oven having the structure as described above can combine a variety of functions to perform a variety of food, but to date has not had a function to facilitate the toaster.

In other words, toast cooking is not possible at all in a single function microwave oven without a heater. Therefore, in order to cook a simple toast despite the many functions of the microwave oven, a user needs to prepare and use a separate toaster. Not only was it expensive to prepare, but it was inconvenient to use.

Therefore, a microwave oven capable of combining a toaster has been developed, and the configuration of such a microwave oven for toaster is shown in FIG. 2.

As shown in FIG. 2, the cavity 22 is provided in the cavity assembly 20, and the electrical equipment room 23 is provided next to the cavity 22. In the cavity 22, the object (food) is heated using microwaves. Various electronic devices for generating microwaves are provided in the electric compartment 23. The microwave oven shown in FIG. 2 also includes a front plate 21.

The cavity 22 is opened and closed by the cavity door 24. When the cavity door 24 is closed, the cavity door 24 contacts the front plate 21 to cover the cavity 22. The cavity door 24 includes a door handle 25 that allows a user to engage the cavity door 24.

The cavity assembly 20 and the electrical compartment 23 are covered by an outer case 27 that forms the outer surface of the top and sides of the microwave oven.

The toaster 30 is located in front of the electronics generating the microwaves in the electric compartment 23. The toaster 30 is provided to penetrate the front plate 21. The toaster panel 32 is provided in front of the toaster 30. The exterior surface material of the toaster panel 32 is made of the same material as the cavity door 24. Thus, the toaster panel 32 together with the cavity door 24 forms a flexible front surface.

When the toaster 30 is described in more detail, a plurality of fixing hooks (not shown) are formed on the rear surface of the toaster panel 32, and the toaster door 40 is hinged to the toaster panel 32; It further comprises two trays 74 supporting one or more sliced breads.

In addition, a control panel 26 is mounted on an upper portion of the front of the cavity door 24, and the control panel 26 includes a first selector 26a for selecting a microwave function and a toaster function for selecting a microwave oven function. And a display unit 26c for displaying an operation state according to a key input of the first selector 26a or the second selector 26b.

Therefore, the microwave oven according to the prior art configured as described above, when a user inputs a signal through the first key input unit 26a or the second key input unit 26b of the control panel 26, receives the corresponding function. The bread is baked for a time set according to the bread type and the baking level selected by the user.

Referring to Fig. 3, the control configuration diagram of the microwave oven toaster configured as described above is described. First, an operation command of the microwave oven is input, and a first key input unit 201 for selecting various menus and an operation command of the toaster are described. A control signal for controlling the corresponding device according to a command input through the second key input unit 202 and the first key input unit 201 or the second key input unit 202 for selecting various menus. A microcomputer 204 for outputting a signal, a first load driver 205 for driving a load of a microwave oven according to a control signal of the microcomputer 204, and a toaster load according to a control signal of the microcomputer 204 The second load driver 206, the heater 207 driven according to the drive signal of the second load driver 206, and the first load driver 205 or the second load driver 206. Heat generated by Cooling fan 208 and a temperature sensing unit 209 for sensing the temperature of the toaster.

When a user inputs an operation command through the first key input unit 201, the microcomputer 204 receives the input and outputs a control signal according to the operation command to the first load driver 205 and the cooling fan. 208 is operated.

In addition, when a user inputs an operation command through the second key input unit 202, the microcomputer 204 outputs a control signal according to the operation command to the second load driver 207, and transmits the control command to the operation command. After the operation is performed, the cooling fan 208 is operated for a predetermined time to have a cooling time.

However, as described above, the microwave oven according to the prior art does not warn even if the internal temperature of the toaster increases by more than a certain temperature when the toaster is operated according to the user's request. Therefore, the external model of the toaster of the microwave oven may vary. Or fire due to overheating may occur.

The present invention has been made to solve the above problems, and provides a toaster combined microwave oven and a control method for delivering a warning message to the user by determining whether the internal temperature of the toaster after the toaster operation is raised above a certain temperature. There is a purpose.

1 is a configuration diagram showing the configuration of a typical microwave oven

Figure 2 is an exploded perspective view showing the configuration of the microwave oven toaster combined according to the prior art

Figure 3 is a block diagram showing the control configuration of the microwave oven toaster combined according to the prior art

Figure 4 is a block diagram showing the control configuration of the microwave oven toaster according to the present invention

Figure 5 is a flow chart showing a control method of the microwave oven toaster according to the present invention

Explanation of symbols for main parts of the drawings

301: first key input unit 302: second key input unit

303: memory 304: micom

305: first load driver 306: second load driver

307: heater 308: cooling fan

309: warning message output unit 309a: display unit

309b: warning sound generating unit 310: temperature detection unit

The microwave oven according to the present invention for achieving the above object comprises a first key input unit for selecting an operation menu of the microwave oven, a second key input unit for selecting an operation menu of the toaster, a heater and a cooling fan. In the microwave oven for toaster, when the operation command is input through the second key input unit, a temperature sensing unit for detecting the internal temperature of the toaster, and when the operation command is input through the second key input unit to control the heater to be driven, According to whether or not the temperature detected by the temperature sensing unit is a predetermined temperature or more for the user to output a warning message and the operation of the heater and the cooling fan, and to display whether or not an abnormality according to the control signal of the microcomputer It is configured to include a warning message output unit.

To control the microwave oven according to the present invention for achieving the above object, the first, second key input unit, temperature sensing unit. In the control method of the microwave oven with a heater and a cooling fan, when the user inputs an operation command through the second key input unit, driving the heater according to a set condition, and the inside of the toaster while the heater is driven And controlling the operation of the heater and the cooling fan according to whether the temperature is above a preset temperature by detecting a temperature, and informing the user of an abnormality according to whether the internal sensing temperature is above a preset temperature. It has its features.

Hereinafter, with reference to the accompanying drawings will be described in more detail toaster combined microwave oven and its control method according to the present invention.

Figure 4 is a block diagram showing a control configuration of a microwave oven toaster according to the invention, Figure 5 is a flow chart showing a control method of the microwave oven toaster according to the present invention.

In the microwave oven according to the present invention, as shown in FIG. 4, a first key input unit 301 for inputting an operation command of the microwave oven, selecting various menus, and an operation command of the toaster is inputted. According to a control command input through the second key input unit 302 and the first key input unit 301 or the second key input unit 302 for selecting a menu, the corresponding control signal is output and the temperature detection unit 310 Determine whether the temperature detected by the temperature is greater than the preset temperature to control the driving of the load, and to control the output of the warning message and the microcomputer 304, and according to the control signal of the microcomputer 304 Of the first load driver 305 for driving the load of the range, the second load driver 306 for driving the toaster load according to the control signal of the microcomputer 304, and the second load driver 306. According to driving signal When the operation command is input through the driven heater 307 and the second key input unit 302, the temperature sensor 310 for detecting the internal temperature of the toaster and the control signal of the microcomputer 304 are driven. Cooling fan 308, and a warning message output unit 309 for informing the user of the abnormality according to the control signal of the microcomputer (304).

Here, the warning message output unit 309 is composed of a display unit 309a for displaying the abnormal situation in the form of a character, and a warning sound generator 309b for generating the abnormal situation in the form of a warning sound.

In the microwave oven according to the present invention configured as described above, when an operation command is input through the second key input unit 301, the microcomputer 304 controls the heater 306 to be driven according to a condition set by a user. do.

When the heater 306 is driven, the temperature sensing unit 310 senses the internal temperature of the toaster, and a corresponding control command is output from the microcomputer 304 depending on whether the sensed temperature is equal to or greater than a preset temperature.

That is, when the temperature sensed by the temperature sensing unit 310 is greater than or equal to a preset temperature, the microcomputer 304 stops driving the heater 306 and drives the cooling fan 308.

In addition, when the driving of the heater 306 is stopped and the cooling fan 310 is driven, the warning message output unit 309 outputs a message in the form of a letter or a warning sound.

Referring to FIG. 5 for the control method of the microwave oven according to the present invention, first, it is determined whether the power is on (S11).

Subsequently, when the power is turned on (S11), it is determined whether the user inputs a signal related to cooking (S12).

As a result of the determination (S12), if a signal for cooking is not input, other commands are performed (S13).

On the other hand, if it is determined that the signal (S12), the cooking signal is input, it is determined whether the signal is input through the second key input unit (S14).

As a result of the determination (S14), if a signal is input through the second key input unit, the heater is driven according to the operation command (S15).

When the heater is driven, the internal temperature of the toaster is sensed through the temperature sensor (S17).

It is determined whether the sensed internal temperature of the toaster is equal to or greater than a preset temperature (S 18).

Subsequently, in the determination result (S18), if the detected detection temperature is higher than or equal to the preset temperature, it is determined whether the detection temperature is higher than or equal to the abnormal temperature (S19).

As a result of the determination (S19), if the detected temperature is equal to or more than the abnormal temperature, it is determined that overheating has occurred in the toaster and stops driving of the heater, and outputs a cooling fan driving and a warning message for a predetermined time (S20).

On the other hand, the determination result (S16), if the sensed detected temperature is less than the abnormal temperature stops the heater drive, and drives only the cooling fan for a predetermined time (S21).

In addition, the determination result (S16), if the operation is completed to have a cooling time by driving the cooling fan for a set time (S22).

In operation S14, if the user does not input a signal through the second key input unit, it is determined whether a signal is input through the first key input unit (S23).

Subsequently, when a signal is input through the first key input unit (S21), the corresponding command of the microwave oven is performed (S24).

As described above, the microwave oven and the control method according to the present invention continuously detect the internal temperature of the toaster when the user inputs an operation command through the second key input unit 302, and the internal temperature detected is preliminary. Depending on whether or not the set temperature is higher than the control of the operation of the heater 307 and the cooling fan 308 and at the same time by outputting a warning message informing the user of the occurrence of a problem in the form of a letter or warning sound can be generated due to overheating to the user You can tell in advance what risks are.

As described above, the microwave oven and the control method thereof according to the present invention have the following effects.

First, when overheating occurs when the internal temperature of the toaster rises above the preset temperature during toaster operation, by stopping the driving of the heater and driving the cooling fan, it is possible to prevent deformation or melting of the internal parts of the toaster due to overheating of the heater.

Second, it is possible to prevent the occurrence of fire due to overheating of the heater.

Third, by outputting a warning message to the user when an abnormality occurs, the user can respond to the post processing more quickly.

Claims (8)

In a microwave oven with a first key input for selecting an operation menu of the microwave oven, a second key input for selecting an operation menu of the toaster, a heater and a cooling fan, A temperature sensing unit for sensing an internal temperature of the toaster when an operation command is input through the second key input unit; When the operation command is input through the second key input unit, the heater is controlled to be driven, and a warning message is output to the user depending on whether the temperature detected by the temperature sensing unit is higher than or equal to a preset temperature and the operation of the heater and the cooling fan. Microcomputer to control the; And, And a warning message output unit for displaying whether an abnormality occurs according to the control signal of the microcomputer. The method of claim 1, The warning message output unit is a microwave oven, characterized in that the display unit for informing the occurrence of abnormalities in the form of a set character. The method of claim 1, The warning message output unit is a microwave oven, characterized in that the warning sound generating unit for generating a predetermined sound to inform the occurrence of abnormalities. First and second key input section, temperature sensing section. In the control method of the microwave oven with a heater and a cooling fan, Driving the heater according to a setting condition when a user inputs an operation command through a second key input unit; Determining whether the internal temperature of the toaster is higher than a preset temperature while the heater is driven; Determining whether the detection temperature reaches an abnormal temperature when the detected temperature is higher than a preset temperature; And, And controlling the operation of the heater and the cooling fan according to whether the detected temperature reaches the abnormal temperature, and informing the user of the occurrence of the abnormality. The method of claim 4, wherein Controlling the operation of the heater and cooling fan And stopping the driving of the heater and driving the cooling fan for a predetermined time when the sensed internal temperature of the toaster is equal to or greater than a predetermined temperature. The method of claim 4, wherein Informing the user of the abnormality is A control method of a microwave oven for toasters, characterized in that the step of displaying the abnormal occurrence to the user in the form of a letter, or generating a warning sound. The method of claim 4, wherein And performing a corresponding operation of the microwave oven according to the input operation command when the user inputs a command through the first key input unit. The method of claim 4, wherein And stopping the heater driving and driving only the cooling fan for a predetermined time when the sensing temperature is higher than the preset temperature but does not reach the abnormal temperature.