KR20000013142A - Program version display method for microwave oven - Google Patents

Abstract

PURPOSE: A program version display method is provided so that the version of programs stored in the microcomputer or other memory may be displayed by the microwave oven itself. CONSTITUTION: The program version display method of a microwave oven comprises steps; an input detecting/judging step, to detect the key inputted by the user and judge if the version confirmation key is on; a version display step, to display the version of the program already inputted; a load driving step, if the input detecting/judging step shows that the version key is not on, the operation key is checked to see if it is on or off and the relay is turned on to drive the load accordingly.

Description

How to display the program version of the microwave oven

The present invention relates to a program version display method of a microwave oven, and more particularly, to a program version display method of a microwave oven to display the version (version) of the program stored in the microcomputer and other memory devices in the microwave itself.

In general, a microwave oven is a device for heating / cooking food using microwaves, and a conventional high voltage transformer and a magnetron are provided. This high voltage transformer generates a predetermined high voltage to drive the magnetron, which emits microwaves of high frequency (approximately 2450 MHz) in a confined space where food is stored. The microwave thus vibrates the water molecules contained in the food, and the food is heated / cooked by molecular frictional heat generated by the vibration of the water molecules.

1 is a partially cutaway perspective view illustrating a conventional microwave oven, and FIG. 2 is a circuit diagram of FIG. 1.

According to Figure 1, the cabinet 20 forming the appearance of the microwave oven is divided into a left and right space, one side is provided with a cooking chamber 22, the front is open, the other side lamp (2), fan motor (3), magnetron ( The apparatus room 23 in which various electric appliances, such as MGT), a high voltage transformer (HVT), and a high voltage capacitor (HVC), is installed is provided. An operation panel 25 is provided on the front surface of the apparatus room 23 for operating the microwave oven and displaying the state thereof.

In addition, the door 21 that opens and closes the front of the cooking chamber 22 is rotatably fixed to one side of the cabinet 20, and the rotating dish 24 in which food to be cooked is placed in the bottom surface of the cooking chamber 22. Is installed. The rotary plate 24 is rotated by a drive motor and gears not shown on the bottom surface of the cabinet 20 during food cooking to increase cooking efficiency.

2, one end of the first and second commercial alternating lines L1 and L2 is connected to the noise filter 1 on the input side to input a normal commercial AC power supply (110V or 220V), and the other end thereof. HVT is connected to both ends of the primary coil. The noise filter 1 includes the first and second fuses FUSE1 and FUSE2, the capacitors C1 to C3, the inductor L, the resistor R1, and the like. Since it is the same, the detailed description is abbreviate | omitted here.

In addition, first and second temperature switches TCO1 and TCO2, a door switch SW1, and a monitor switch SW2 are connected to the first commercial AC line L1, and the second commercial AC line L2. ) Is connected to the power relay RY3. The first and second temperature switches TCO1 and TCO2 block overheating generated in the microwave cabinet 20 and the magnetron MTG, respectively, and the door switch SW1 and the monitor switch SW2 are doors. In accordance with the open and closed state of the (not shown) to perform a safety function of the microwave oven.

In addition, an inrush relay RY2 and a current limiting resistor R2 are connected in parallel to the power relay RY3. The power relay RY3 applies a commercial AC power supply to the primary coil of the high voltage transformer HVT, and the inrush relay RY2 is a few seconds before the power relay RY3 is turned on. Operation to eliminate inrush current.

A lamp 2, a fan motor 3, and a driving motor 4 are connected between the first commercial AC line L1 and the second commercial AC line L2. In addition, a main relay RY1 for turning on / off the operation of the lamp 2, the fan motor 3, and the driving motor 4 is connected to one end thereof. Here, the other end of the main relay RY1 is connected to the second commercial AC line L2 through the inrush relay RY2 and the power relay RY3.

On the other hand, a key input unit 5 for inputting a user's command and a display unit 6 for displaying various operating states of the microwave oven are provided. In addition, the microcomputer 7 for controlling the on / off operation of the main relay RY1, the inrush relay RY2 and the power relay RY3 in accordance with the input of the key input unit 5 is provided. Here, the microcomputer 7, the key input unit 5 and the display unit 6 are preferably arranged in the operation panel 25 shown in FIG. 1.

In addition, a magnetron (MGT) for generating microwaves and a high voltage capacitor (HVC) and a high voltage diode (HVD) for supplying a double voltage to the magnetron (MGT) are respectively provided on the secondary coil side of the high voltage transformer (HVT). Prepared. In addition, a high voltage fuse (H.V.FUSE) is provided on one side of the high voltage capacitor (HVC), and protects the device by blocking the overcurrent of the high voltage side.

3 is a flow chart illustrating a conventional microwave control method, referring to the operation of the conventional microwave oven configured as described above with reference to the following.

First, the user opens the door 21 and places the food to be cooked in the state in which the cooking chamber 22 is opened on the upper side of the rotating dish 24 inside the cooking chamber 22 through the front of the cabinet 20. Close 21. In this state, the user sets a cooking time and a cooking temperature through the key input unit 5 of the operation panel 25, and inputs an operation key (not shown) for starting cooking (S101).

Thereafter, the microcomputer 7 detects the key input and determines whether an operation key (not shown) is input (S102). Therefore, when the operation key (not shown) is input, the microcomputer 7 operates the microwave by turning on the main relay RY1 and the power relay RY3 to drive the load (S103 to S104).

When the microwave oven is operated as described above, the commercial AC power inputted through the first and second commercial AC lines L1 and L2 is respectively a door switch SW1, a monitor switch SW2, and a high voltage transformer HVT. The high voltage transformer HVT is driven by flowing through the primary coil and loads such as the power relay RY3. At this time, the microcomputer 7 removes the inrush current through the inrush resistor R2 by operating the inrush relay RY2 for a few seconds immediately before the power relay RY3 is turned on.

In addition, a commercial AC power is also supplied to the lamp 2, the fan motor 3, and the drive motor 4 by the main relay RY1, and the lamp 2 illuminates the inside of the cooking chamber 22. The fan motor 3 cools various circuit components in the apparatus chamber 23, and the drive motor 4 rotates the rotary plate 24 inside the cooking chamber 22 so that microwaves are incident evenly on the food of the upper end. do.

In addition, the high voltage transformer (HVT) supplies a high voltage to the high voltage capacitor (HVC), the high voltage diode (HVD) and the magnetron (MGT) through the secondary coil, the magnetron (MGT) generates a microwave to the cooking chamber 22 By releasing to the inside, food put into it is heated / cooked to a desired temperature.

Meanwhile, in the state where the microwave oven is operated as described above, the microcomputer 7 detects a key input to determine whether the operation key (not shown) is off (S105). Accordingly, when the operation key (not shown) is not turned off, the operation state of the microwave oven is maintained. When the operation key (not shown) is turned off, the main relay RY1 and the power relay RY3 are turned off. All loads of the microwave oven are stopped (S106 to S107).

On the other hand, in the microcomputer 7 or other memory elements, the above series of programs are stored and repeatedly executed / sequentially, and versions according to the time of production and input of the program are recorded.

However, such a conventional microwave control method can not check the version of the program stored in the microcomputer or other memory device of the microwave oven, if the operator needs to check it (for example, when testing the product or A / S ), A separate personal computer and a ROM writer are required, and there is a very troublesome problem in that the version of the program must be displayed / checked using the same.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, by displaying the version of the program stored in the microcomputer and other memory devices in the microwave itself, so that it can be conveniently confirmed It provides a program version display method.

1 is a partial cutaway perspective view showing a typical microwave oven,

2 is a circuit diagram of FIG.

3 is a flowchart illustrating a conventional microwave control method;

Figure 4 is a flow chart showing a preferred embodiment of the program version display method of the microwave oven according to the present invention.

Explanation of symbols on the main parts of the drawings

5: key input unit 6: display unit

7: microcomputer RY1: main relay

RY3: Power Relay

A feature of the program version display method of a microwave oven according to the present invention for achieving this object is an input detection / decision step of detecting a key input by a user, thereby determining whether a version confirmation key is on and the input detection. And a version display step of displaying a program version which is input in advance, when the version check key is turned on by the / decision step.

In addition, when the version check key is not turned on by the input detection / determination step, it is preferable to further include a load driving step of determining whether the operation key is on and driving the load of the microwave oven accordingly. Do.

Therefore, by displaying the version of the program stored in the microcomputer and other memory devices in the microwave itself, it is not necessary to provide a separate personal computer, ROM writer, etc., it is possible to check the version of the program very conveniently.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the program version display method of a microwave oven according to the present invention, the same components as in the prior art will be described by applying the same reference numerals.

4 is a flowchart showing a preferred embodiment of the program version display method of the microwave oven according to the present invention, whereby the operation of the preferred embodiment according to the present invention in more detail as follows.

The user opens the door 21 and places the food to be cooked in the state in which the cooking chamber 22 is opened on the top of the rotary dish 24 inside the cooking chamber 22 through the front of the cabinet 20, and then the door 21. ). In this state, the user selectively inputs various keys such as setting a cooking time and a cooking temperature through the key input unit 5 of the operation panel 25 (S201).

At this time, the microcomputer 7 detects various key inputs by the user through the key input unit 5, and performs an input detection / determination step of determining whether the double version check key is turned on (S202).

Therefore, when the version confirmation key is turned on by the input detection / determination step, the microcomputer 7 performs a version display step of fetching a program version which has been input in advance and displaying it through the display unit 6 ( S203).

On the other hand, when the version check key is not turned on by the input detection / decision step, it is determined whether the operation key is turned on, and accordingly, the load driving step of driving the load of the microwave by turning on the relays RY1 and RY3 accordingly. (S204 to S209).

Here, the microwave load is operated by the load driving step, and the state in which the food is heated / cooked to a desired temperature is the same as described in detail through the prior art, and thus the detailed description thereof will be omitted.

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 are intended to fall within the scope of the claims set forth.

As described above, according to the program version display method of the microwave oven according to the present invention, by displaying the version of the program stored in the microcomputer and other memory devices in the microwave itself, a separate personal computer, ROM writer, etc. may be provided. There is no need, and it is very convenient to check the version of the program.

Claims (2)

An input detection / decision step of detecting a key input by a user and determining whether a version confirmation key is turned on by this; And And a version display step of displaying a program version which has been input in advance when the version check key is turned on by the input detection / determination step. The load driving step of claim 1, further comprising: determining whether the operation key is turned on when the version check key is not turned on by the input detection / determination step, and accordingly, driving the load of the microwave by turning on the relay. Program version display method of the microwave, characterized in that it comprises a.