KR100285843B1 - Microwave oven and method for displaying cooking time - Google Patents

Abstract

PURPOSE: A microwave oven and a method for displaying a cooking time are provided to use a displayed information as a useful information by displaying a various information such as a remaining cooking time, an operating time, an accumulative cooking times, etc., during the cooking. CONSTITUTION: A microwave oven comprises a switch input portion(10), a control portion(20), a display portion(40) and a load drive portion(30). The switch input portion(10) includes a start switch(11), a menu select switch(12), a temperature set switch(13), a reset switch(15), an operating time switch(16) and an accumulative time switch(17). The control portion(20) is composed of a microprocessor(21) and a data storage portion(22) and processed an inputted signals through the switch input portion. The display portion(40) indicates a commended information from the control portion and the load drive portion(30) is generated a microwave. The control portion(20) is displayed a remaining time to the displaying portion(40) by subtracting a cooking lapse time from a set time if the start switch is turned on, is displayed a cooking lapse time if the operating switch is turned on and is displayed an accumulated cooking lapse time with regard to a number of operating from a turning on of the reset switch to present.

Description

Microwave and its cooking time display method

The present invention relates to a microwave oven and a cooking time display method, and more particularly, to a microwave oven and a cooking time display method for displaying various cooking times such as remaining time, operating time and cumulative time when cooking food. It is about.

In general, a microwave oven is a heating apparatus for cooking food using microwaves, and as shown in FIG. 1, the cabinet 60, which is divided into left and right spaces to form an appearance of the microwave oven, has a front opening at one side. 52 is provided, and the apparatus room 54 in which various circuit devices are provided on the other side is provided.

In addition, the door 62 that opens and closes the front open portion under the state in which the cooking chamber 52 is formed as described above, and the rotating plate 64 on which the food to be cooked are placed are rotatably installed.

The rotating plate 64 is provided with a rotating plate driving unit 33 (shown in FIG. 2) composed of a motor and various gears not shown on the bottom thereof, and is configured to rotate the rotating plate 64 when cooking.

Meanwhile, a magnetron (MGT), a high voltage transformer (HVT), a high pressure capacitor (HC), and a cooling fan (FAN) cooling the magnetron (MGT), which generate microwaves, are electrically connected to the apparatus chamber 54. The front panel is provided with an operation panel 66 for operating these devices and displaying their status.

In addition, the cooling fan (FAN) is forced to blow the air to cool the magnetron (MGT), and the air guide 50 for inducing the heated air to the cooking chamber 52 through the heat exchange effect is a cabinet (60) It is provided on one side.

On the other hand, the circuit diagram of the conventional microwave oven, as shown in Figure 2, the start switch 11, the menu selection switch 12, the temperature setting switch 13, and the time setting switch 14 of the microwave oven The switch input unit 10 is provided, and the switch input unit 10 is formed in the operation panel 66 shown in FIG.

In addition, the control unit 20 is provided to control the driving of the various loads for the cooking operation in accordance with the switch operation of each of the switch input unit (10). Here, the control unit 20 controls the cooking operation using the microcomputer 21, but utilizes predetermined information previously stored from the data storage unit 22, for example, cooking temperature, cooking time, and the like. The data storage unit 22 is preferably configured as a ROM (Read Only Memory) that does not erase the information even when the power supply is stopped.

In addition, the load driving unit 30 is driven by the control unit 20 to perform a cooking operation. The load driver 30 rotates the magnetron driver 31 for driving the magnetron (MGT) to generate microwaves, the illumination (not shown) of the cooking chamber and the fan and driver 32 for driving the fan (FAN). It comprises a rotary plate driving unit 33 for rotating the plate (64).

Here, the magnetron driving unit 31 generates microwaves of 2450 MHz through circuit elements such as a high voltage transformer (HVT), a high voltage diode (HD), a high voltage capacitor (HC), and a magnetron (MGT) shown in FIG. 1. This is discharged into the cooking chamber 52, and the high heat generated by the magnetron MTG is forcedly cooled by the cooling fan FAN.

In addition, the display unit 40 for displaying the cooking state as described above is preferably formed in the operation panel 66 shown in FIG. 1 together with the switch input unit 10 described above.

In the conventional microwave oven configured as described above, as the door 62 is opened from the cabinet 60, a cooking container containing food is introduced into and out of the cooking chamber 52 through the front of the cabinet 60. The rotating plate 64 is placed on top.

Then, the microwave oven is operated in accordance with the operation of the switch input unit 10 in the state in which the door 62 is closed. That is, the user sets the desired cooking temperature and time using the temperature setting switch 13 and the time setting switch 14, and starts cooking with the start switch 11.

Here, the microcomputer 21 of the control unit 20 detects the on / off of each of the switches 11, 13, 14 described above, and accordingly the magnetron driver 31, the lighting and fan driver 32, And operating the rotary plate driving unit 33 to heat and cook food in the cooking chamber 52.

That is, the commercial AC power input from the outside is supplied to the magnetron (MGT), the high pressure capacitor (HC) and the high voltage diode (HD) through the high voltage transformer (HVT) shown in Figure 1, and thus from the magnetron (MGT) Microwaves are generated and emitted into the cooking chamber 52 to cook food.

In addition, the microcomputer 21 drives the cooling fan 32 for turning on the lamp (not shown) of the cooking chamber and cooling the magnetron (MGT), and rotating the rotating plate 64 on which food is placed to increase cooking efficiency. To improve.

On the other hand, by operating the menu selection switch 12, the user selects a desired menu, and the cooking temperature and time according to this menu are automatically set / controlled to perform the cooking operation. Here, the microcomputer 21 reads information such as temperature and time corresponding to the input of the menu selection switch 12 from the data storage unit 22 to control the cooking operation and accordingly performs a predetermined cooking process. The display unit 40 displays the cooking setting and the progress state, and informs the user.

However, the conventional microwave oven, as described above, displays only the remaining time according to the cooking state, so there is a problem in that it is not known how long the cooking time is required for the cooking operation when the cooking is completed.

In addition, when the desired cooking is not completed in one operation, the user may repeatedly perform the cooking operation as described above several times. In this case, the user may know the total accumulated time required for the cooking operation. There were other problems that were not there.

The present invention has been made to solve the above-mentioned disadvantages of the present invention, an object of the present invention, by displaying a variety of cooking time, such as the remaining time, cooking time and the cumulative time of cooking operation, the user, The present invention provides a microwave oven and a method of displaying the cooking time thereof, which can be used as useful information when the above-described cooking of food is performed.

1 is a perspective view showing the appearance of the general microwave oven and the mounting state of each component,

2 is a circuit diagram showing a conventional microwave oven,

3 is a circuit diagram showing a microwave oven according to the present invention,

4a and 4b is a control flowchart showing a preferred embodiment of the cooking time display method of the microwave oven according to the present invention.

<Explanation of symbols for main parts of drawing>

10: switch input unit 11: start switch

15: reset switch 16: operation time switch

17: cumulative time switch 20: control unit

21: microcomputer 22: data storage unit

30: load driving unit 40: display unit

Microwave oven according to the present invention for realizing this, a switch input unit provided with a start switch, a time setting switch, a control unit for processing a signal input through the switch input unit, a display unit for displaying the information indicated by the control unit and the control unit In a microwave oven having a load driving unit for controlling the microwave to generate a microwave, the switch input unit further comprises a reset switch, an operation time switch, a cumulative time switch, wherein the control unit at the set time input by the time setting switch When the start switch is turned on, the remaining time obtained by subtracting the cooking elapsed time from the set time is displayed on the display unit, but when the operating time switch is turned on, the cooking elapsed time is displayed; The number of cooking operations performed so far since the reset switch was reset The cooking elapsed time accumulated for the number is displayed.

In addition, in order to achieve the above object, the cooking time display method of the microwave oven according to the present invention stores a set time in a first buffer when a start switch is input, clears the second buffer to a value of zero, and then resets it. A first step of performing a cooking operation after clearing the third buffer to a zero value when a switch is input; The cooking operation is performed by the first process, wherein the set time value of the first buffer is decreased by 1, the time value of the second buffer is increased by 1, and the time value of the third buffer is the second buffer. Accumulating the values of; After the second process, the time value of the first buffer is normally displayed. When the operation time switch is turned on, the time value of the second buffer is displayed. When the cumulative time switch is input, the time value of the third buffer is displayed. A third process of doing; And a fourth step of ending the cooking operation when the remaining time value of the first buffer reaches 0 after the third process, and otherwise continuing the cooking operation by increasing or decreasing each buffer value by the second process. It includes;

Hereinafter, a preferred embodiment of the microwave oven and its cooking time display method according to the present invention will be described in more detail with reference to the accompanying drawings, the same components as in the prior art will be described with the same reference numerals.

3 is a circuit diagram illustrating a microwave oven according to the present invention, and FIG. 4 is a control flowchart illustrating a preferred embodiment of a cooking time display method of the microwave oven according to the present invention.

As shown in the drawing, the switch input unit 10 of the microwave oven operated by the user includes a start switch 11, a menu selection switch 12, a temperature setting switch 13, a time setting switch 14, and a reset switch 15. ), An operating time switch 16 and an accumulated time switch 17 are provided. The switch input unit 10 is formed in the operation panel 66 shown in FIG.

In addition, the load driving unit 30 performs the heating / cooking operation of the microwave, the magnetron driving unit 31 for driving the magnetron (MGT) shown in Figure 3, the illumination of the cooking chamber (not shown) and the cooling fan (FAN) It includes lighting and fan driving unit 32 for driving the rotation plate driving unit 33 for rotating the rotation plate 64 and the like. In addition, a display unit 34 for displaying such a cooking state is provided.

Here, the display unit 34 is formed with the switch input unit 10 on the operation panel 66, the magnetron driving unit 31 is a high voltage transformer (HVT), a high voltage diode (HD) shown in FIG. ), Microwaves are generated through circuit elements such as a high pressure capacitor (HC) and a magnetron (MGT) and emitted into the cooking chamber 52, and the high temperature generated by the magnetron (MGT) is a cooling fan (FAN). Forced cooling by

In addition, the control unit 20 including the microcomputer 21 and the data storage unit 22 receives an operation command of the switch input unit 10, and the load driver (according to the information previously stored in the data storage unit 22). 30) to control the heating / cooking operation. Here, the data storage unit 22 is configured as a ROM that does not erase the information even when the power supply is stopped as described above.

In addition, a plurality of buffers (not shown) are built in the microcomputer 21 to store increase and decrease values of various cooking times such as remaining time, operating time, and cumulative time when cooking food.

The operation of the present invention configured as described above will be described in more detail with reference to FIGS. 4A and 4B.

First, as the door 62 is opened from the cabinet 60, a cooking vessel containing food enters and leaves the cooking chamber 52 through the front of the cabinet 60, and the cooking vessel is at the top of the rotary dish 64. After being placed in, the microwave oven is operated in accordance with the operation of the switch input unit 10 in the state in which the door 62 is closed. At this time, the user sets the desired cooking temperature and time using the temperature setting switch 13 and the time setting switch 14, and turns on the start switch 11 to start cooking.

Here, the microcomputer 21 of the control unit 20 stores the set time in the first buffer when the start switch 11 is input, clears the second buffer to a value of zero (S101 to S102), and then resets it. When the switch 15 is input, a first process of performing a cooking operation after clearing the third buffer to a zero value is performed (S103 to S105).

In addition, the operation of heating and cooking food in the cooking chamber 52 by operating the magnetron driver 31, the lighting and fan driver 32, and the rotary plate driver 33 controlled by the controller 20 is illustrated in FIG. 1. 2 to 3, the detailed description thereof will be omitted here.

Thereafter, the cooking operation is performed by the first process as described above, wherein the set time value of the first buffer is decreased by 1, the time value of the second buffer is increased by 1, and the time value of the third buffer is A second process of accumulating the values of the second buffer is performed (S106). Where the number 1 is the time value.

In more detail, the first buffer is configured to store the remaining time reduced by one every second from the time value input through the time setting switch 14 until cooking is finished. The buffer is incremented by 1 every second from the initial cleared zero value until the end of cooking to store the operation time required for cooking. In addition, the third buffer stores the total cumulative time required for the cooking operation for the number of cooking steps that have been performed by accumulating the value of the second buffer until the value of the second buffer is reset by the reset switch 15.

In this process, when no switch is normally input, the time value of the first buffer, that is, the remaining time is output to the display unit 40. On the other hand, when the operation time switch 16 is input, the microcomputer 21 extracts the time value of the second buffer and outputs it to the display unit 40 to display the operation time required for cooking. In addition, when the cumulative time switch 17 is input, the microcomputer 21 extracts the time value of the third buffer and outputs it to the display unit 40 to perform the third process of displaying the total accumulated time required for the cooking operation. (S107 to S111).

After the third process, when the cooking time is completed, the cooking operation as described above is terminated. Otherwise, the fourth operation is performed to continue the cooking operation while increasing or decreasing the respective buffer values by the second process. As a result, various cooking times such as remaining time, operating time, and cumulative time during food cooking are variously displayed.

As described above, according to the cooking time display method of the microwave oven according to the present invention, it is possible to know how much time is required for the cooking operation when the cooking is completed, and the desired cooking is completed in one operation. If not, there is an effect that the total cumulative time required in the cooking operation is repeatedly performed several times.

In addition, through the various cooking time, such as the remaining time, the operation time and the cumulative time when cooking the food through the other effects that the user can utilize this as useful information when the cooking of the food afterwards have.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (2)

When the start switch is input, the setting time is stored in the first buffer, the second buffer is cleared to 0 value, and when the reset switch is input, the first buffer is cleared to 0 value to perform the cooking operation. process; The cooking operation is performed by the first process, wherein the set time value of the first buffer is decreased by 1, the time value of the second buffer is increased by 1, and the time value of the third buffer is the second buffer. Accumulating the values of; After the second process, the time value of the first buffer is normally displayed. When the operation time switch is turned on, the time value of the second buffer is displayed. When the cumulative time switch is input, the time value of the third buffer is displayed. A third process of doing; And a fourth step of ending the cooking operation when the remaining time value of the first buffer reaches 0 after the third process, and otherwise continuing the cooking operation by increasing or decreasing each buffer value by the second process. Cooking time display method of a microwave oven comprising a. A switch input unit provided with a start switch and a time setting switch, a control unit for processing a signal input through the switch input unit, a display unit for displaying information indicated by the control unit, and a load driving unit controlled by the control unit to generate microwaves In the microwave oven, the switch input unit further includes a reset switch, an operation time switch, and a cumulative time switch, and the controller is configured to display the display unit when the start switch is turned on for a set time input by the time setting switch. Displays the remaining time subtracted from the cooking elapsed time from the set time, but displays the cooking elapsed time when the operation time switch is turned on, and when the cumulative time switch is turned on, the cooking proceeded to the present time after the reset switch was reset. Display the cooking elapsed time accumulated for the number of operations Microwave oven, characterized in that.

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