KR20040093946A - Microwave oven having toaster function and method for controlling the same - Google Patents

Abstract

PURPOSE: A microwave oven used for a toaster and a control method thereof are provided to execute an optimal cooking without a separate operation of a user by setting automatically a cooking time according to an initial state of bread. CONSTITUTION: A microwave oven used for a toaster is composed of a first key input unit(201) for selecting an operation menu of the microwave oven; a second key input unit(202) for selecting the operation menu of the toaster; a heater(208) and a cooling fan; a surface temperature sensing unit(305) for detecting the surface temperature of bread inserted into the toaster as an operation order is input through the second key input unit; a microcomputer(304) for controlling to drive the heater in receiving the operation order through the second key input unit and setting different cooking time according to the surface temperature of the bread detected by the surface temperature sensing unit; and a display unit(209) for displaying a cooking condition set according to the surface temperature of the bread by a control signal of the microcomputer.

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 oven and a method of controlling the same, which allow the heating time and the like to be controlled according to the surface temperature of the bread to be toasted in the 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 an 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, so if a user wants to cook a simple toast despite many functions of the microwave, a separate toaster should be prepared and used. Not only is it expensive to prepare for this, but it is 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 open and close the cavity door 24.

The cavity assembly 20 and the electrical compartment 23 are covered by an outer case 27 which forms the outer surface of the upper and side surfaces 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 forms a flexible front surface with the cavity door 24.

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 to the operation command. After the operation is performed, the cooling fan 208 is operated for a predetermined time to have a cooling time.

At this time, the second key input unit 202 is a start / cancel buttons 202a, 202b, freezing and toasting room temperature 202c, 202e, bagel freezing (202d) and bagel room temperature as shown in FIG. It is configured to select a bread type and bread state such as (202e).

However, in the microwave oven according to the related art configured as described above, as the user selects a corresponding menu key according to the initial state (cold or room temperature) of the bread, different algorithms are applied and cooking is performed.

Therefore, the microwave oven according to the prior art has to develop different algorithms according to the type of bread (toast or bagel) and the initial state (cold or room temperature). There was a hassle to choose.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a microwave oven and a method for controlling the same, which can automatically adjust the cooking time according to the initial state of the bread for toaster.

1 is an exploded perspective view 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 according to the invention

4 is a diagram illustrating a configuration of a second key input unit illustrated in FIG. 3.

Figure 5 is a block diagram showing the control configuration of the microwave oven toaster according to the present invention

Figure 6 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

201: first key input unit 202: second key input unit

203: Memory 206: First load driver

207: second load driving unit 208: heater

209: display unit 304: microcomputer

305: surface 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 toaster, the surface temperature sensing unit for detecting the surface temperature of the bread inserted into the toaster when the operation command is input through the second key input unit, and the heater is input when the operation command is input through the second key input unit And display the cooking conditions set according to the temperature of the bread according to the control signal of the microcomputer and a microcomputer for controlling different driving times according to the surface temperature of the bread detected through the surface temperature sensing unit. It is configured to include a display unit to have the characteristics.

Preferably, the temperature sensor is composed of an infrared sensor for sensing the surface temperature of the bread is characterized by.

In the control method of the microwave toaster combined use to achieve the above object, the toaster combined microwave oven having a surface temperature sensing unit and a display unit comprises the steps of selecting a bread type to be cooked by the user, the bread type is selected and the user Detecting whether the surface temperature of the bread corresponds to a predetermined first to third set section through the surface temperature sensing unit when the cooking start command is input; and according to the detected surface temperature of the bread; Set different cooking times, display them on the display unit, and then differentially cook them.

Preferably, the first set section is a section in which the surface temperature of bread is 0 ° C. or less, the second set section is a section in which 0 ° C. <surface temperature <7 ° C., and the third set section is a section in which the surface temperature of bread is 7 ° C. or more. It is characterized by.

More preferably, in the step of differentially cooking, if the surface temperature of the bread corresponds to a preset first setting section, the bread state is determined to be frozen and the corresponding cooking time is set and the set first cooking time is displayed. And displaying the portion after cooking, and if the surface temperature of the bread falls within the preset second setting section, determine that the bread state is in the refrigerated state, set the cooking time, and display the set second cooking time on the display unit. Displaying and cooking the display and if the surface temperature of the bread corresponds to a preset third section, the bread state is determined to be at room temperature, and the cooking time is set and the set cooking time is displayed on the display unit. It consists of the step of cooking after that has its features.

More preferably, the first to third cooking times satisfy the conditions of first cooking time> second cooking time> third cooking time.

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

Figure 5 is a block diagram showing the configuration of a microwave oven toaster according to the present invention, Figure 6 is a flow chart showing a control method of the microwave oven toaster according to the present invention.

In the configuration of the microwave oven toaster according to the present invention shown in Figure 5, the same components as in the prior art will be given the same number.

Toaster microwave oven according to the present invention, as shown in Figure 5, the first key input unit 201 for selecting various functions for operating the microwave oven, various menus for operating the toaster, bread type And a second key input unit 202 for selecting a baking level, a memory 203 for storing an output voltage for driving the heater according to the bread type and the baking level, and bread applied to the inside of the toaster. Heating the toast according to the surface temperature detection unit 305 for detecting the surface temperature of the bread, the bread type selected by the second key input unit 202 and the surface temperature of the bread detected by the surface temperature detection unit 305 The microcomputer 304 controls the time to be variable and controls the operation of the microwave oven according to a command input through the first key input unit 201 and the first key input unit 201. The first load driver 206 for driving the corresponding load according to the control signal of the microcomputer 304 when the operation command is input, and the microcomputer 204 of the microcomputer 204 when the operation command is input through the second key input unit 202. According to the control signal of the second load driver 207 for driving the load in accordance with the control signal, the heater 208 driven in accordance with the driving of the second load driver 207, and the microcomputer 304 And a display unit 209 for displaying the operation state of the device.

At this time, the surface temperature detection unit 305 is mounted in a predetermined region inside the slot in which the bread inside the toaster is seated.

When the microwave oven is configured as described above, the user selects a bread type (toast or bagel) to be toasted through the second key input unit 202, inputs the bread into the toaster tab, and then inputs a cooking start button. The surface temperature detection unit 305 detects the surface temperature of the introduced bread and finally sets the baking time.

In other words, different types of bread must be applied to different types of bread, such as soft bread or bagels. Therefore, if you select bread type first, the cooking time is different depending on whether the bread is in its initial state, whether it is frozen, chilled or room temperature. Differently.

In addition, since the output voltage for heating the heater 207 is set differently for each manufacturer, time is applied differently accordingly.

Referring to FIG. 6, a control method of the microwave toaster combined microwave oven according to the present invention configured as described above is selected first, and the bread is selected (S11). You will choose the type you want, such as a toaster or bagel.

Subsequently, it is determined whether the user inputs a cooking start command (S12).

As a result of the determination (S12), if the user inputs a cooking start command, the surface temperature of the inserted bread is sensed (S13).

Subsequently, it is determined whether the detected surface temperature exists in the first predetermined section (S14). In this case, the first setting section is a section in which the surface temperature is equal to or less than the first setting temperature (0 ° C).

As a result of the determination (S14), if the detected surface temperature exists in the first predetermined section, it is regarded as the frozen state, and after setting the cooking time T1 according to the frozen state, the cooking time T1 set in the display unit ) And cooks for a set time (S15 to S16).

On the other hand, if the determination result (S14), if the detected surface temperature does not exist in the first predetermined section is determined whether it exists in the third set section (S18). In this case, the third set section is a section in which the surface temperature is greater than or equal to the third set temperature (7 ° C).

Subsequently, the determination result (S18), if the detected surface temperature is present in the preset third set section to determine the room temperature state, after setting the cooking time (T3) according to the room temperature state cooking time (set in the display unit ( T3) is displayed and cooked for a set time (S19 to S20).

In addition, as a result of the determination (S18), if the detected surface temperature does not exist in the preset third set period, it is present in the second set period, so as to identify the refrigerated state and set the cooking time T2 according to the refrigerated state. After the set cooking time T2 is displayed on the display unit, cooking is performed for a set time (S21 to S22).

As described above, when the toaster combined microwave oven and the control method according to the present invention are toasted, the initial state of the bread can be grasped and the cooking time for baking the bread can be automatically set accordingly.

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

First, by automatically setting the cooking time according to the initial state of the bread it is possible to perform the optimum cooking without the user's separate operation.

Second, since it can be separated into room temperature / refrigerated / frozen state in detail according to the initial temperature of the bread, it is possible to cook much more optimal than when divided into conventional frozen / room temperature cooking.

Third, it is possible to lower the manufacturing cost because it is possible to set the cooking conditions with one algorithm according to the temperature detection of bread without applying each algorithm according to the cooking state.

Claims (6)

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 surface temperature sensing unit for sensing a surface temperature of the bread inserted into the toaster when an operation command is input through the second key input unit; A microcomputer that controls the heater to be driven when an operation command is input through the second key input unit, and controls different cooking times to be set according to the surface temperature of the bread detected by the surface temperature sensing unit; And, And a display unit configured to display a cooking condition set according to the surface temperature of the bread according to the control signal of the microcomputer. The method of claim 1, The temperature sensing unit Toaster combined microwave oven, characterized in that consisting of an infrared sensor for sensing the surface temperature of the bread. In the control method of the microwave oven with the surface temperature sensing unit and the display unit, Selecting a bread type to be cooked by the user and then inputting the bread; Detecting whether any of the first to third predetermined sections is set by the surface temperature sensing unit, when the corresponding bread is input and the user inputs a cooking start command; And, And setting different cooking times according to the sensed surface temperature of the bread, and displaying them on the display unit to cook them differentially. The method of claim 3, wherein The first set section is a section where the surface temperature of the bread is 0 ℃ or less, the second set section is a section where 0 ℃ <surface temperature <7 ℃, the third set section is a section where the surface temperature of the bread is 7 ℃ or more Control method of microwave oven with toaster. The method of claim 3, wherein The differential cooking step When the surface temperature of the bread corresponds to the first predetermined section, determining that the bread is in a frozen state, setting the corresponding cooking time, displaying the set first cooking time on the display, and then cooking; If the surface temperature of the bread falls within the second preset period, determining that the bread is in a refrigerated state, setting the cooking time, displaying the set second cooking time on the display, and then cooking; If the surface temperature of the bread falls within the third predetermined section, the state of the bread is determined to be at room temperature, and the cooking time is set, and the set cooking time is displayed on the display unit. Control method of microwave oven with toaster. The method of claim 5, wherein The first to third cooking time is And a first cooking time> second cooking time> third cooking time.