KR19980040468A - How to generate buzzer sound when setting automatic cooking of rotary microwave oven - Google Patents

Abstract

The present invention relates to a method of ringing a buzzer when setting an automatic cooking menu of a rotary type microwave oven, using a rotary switch rotatable in left and right directions. By selecting the auto cooking step first, setting one of the auto cooking menus by rotating the rotary switch while auto cooking is set, and making a buzzer sound through the buzzer when setting the auto cooking menu according to the rotary switch rotation, When cooking food using an encoder type microwave oven, it eliminates the inefficiency of displaying only the automatic cooking step or manual cooking step on the indicator, and easily sets the automatic menu when the user performs manual cooking and automatic cooking at the same time. Thus, it is possible to concentrate on other things besides cooking.

Description

How to generate buzzer sound when setting automatic cooking of rotary microwave oven

The present invention relates to a rotary microwave oven, and more particularly, to a method for generating a buzzer sound when setting an automatic cooking menu of a rotary encoder type microwave oven.

As is well known, microwave oven generates high frequency wave of thousands of MHz by applying high voltage electricity to high frequency oscillator tube called magnetron, and the generated high frequency wave is absorbed by food, causing water molecules in food to vibrate. The frictional heat is generated, it is a kind of kitchen equipment having the principle that food is cooked by this frictional heat.

In general, a microwave oven may be divided into a key input unit, an oscillation unit, a high pressure unit, a control unit, a display unit, and a heating chamber in terms of its structure.

The key input unit consists of a key pad for setting the cooking time of the microwave oven and various automatic cooking menus, and the oscillation part is composed of a magnetron generating high frequency, a waveguide leading the high frequency to the heating chamber, and a cooling fan cooling the magnetron. The high voltage part is composed of the transformer voltage, high voltage condenser, high voltage diode, etc. to make the heater voltage and DC high voltage necessary for the operation of the magnetron. It is composed of light emitting elements for displaying status. Finally, the heating chamber is composed of a heating chamber, a turntable and a door for taking in and out food, which are closed at high frequency.

In addition, the microwave oven is not only a function of warming and thawing food but also a specific function, for example, a heat insulation function, a lock function, an error check function, and the like, based on the electronic control according to the rapid development of the recent electronic technology. It is a widespread condition and is also becoming an essential household kitchen appliance.

On the other hand, recent microwave ovens use a rotary encoder method using a rotary switch composed of a changeover switch for selecting a desired contact by rotating a wiper on a circumferentially arranged contact rather than a simple button type. It is widely used. In other words, taking advantage of the characteristics of the rotary encoder that converts the mechanical analog change amount into a digital amount, the microcomputer can detect and control the number of pulses that change according to the left and right rotation amounts of the rotary switch to perform a specific function mode. do.

In this case, the specific function mode refers to an automatic cooking step and an automatic cooking menu selection step which are set corresponding to the left and right rotations of the rotary switch described above. In other words, when the automatic cooking is set and the start key is pressed, the automatic cooking menu step is entered, and when the rotary switch is rotated left and right, a plurality of automatic cooking menus built in the microcomputer are set. For example, if the number 4 menu is called Kimchi Jjigae, put the ingredients in the cooking chamber, rotate the rotary switch to the scale of 4, and press the Start key to finish the Kimchi Jjigata automatically. If the user sets the automatic cooking menu and rotates the switch to switch manually, the general function of the manual menu, for example, time adjustment, is set, and the number is displayed on the display unit. In addition, when the switch is rotated to set the automatic menu again in the manual cooking setting state, an automatic cooking step is performed. However, when the user fails to check the number appearing on the display, it is impossible to know whether the current mode is automatic or manual. In addition, if you are engaged in another day during cooking and rotate the switch to set the automatic menu, the display will change time (assuming the current microwave cooking progress is manual cooking, ie time setting). In this case, the user cannot confuse the time change and the auto cook menu number change to set an appropriate cooking setting, and there is a problem of having to restart the key input from the beginning for the auto cooking setting.

Accordingly, an object of the present invention is to provide a method for generating a buzzer sound when setting automatic cooking of a rotary microwave oven.

In order to achieve the above object, the present invention, in the automatic cooking menu setting method of the microwave oven using a rotary switch rotatable in the left and right direction, automatic cooking selection step by the rotation of the rotary switch in the predetermined direction, and rotary Rotating the switch in the left and right directions to set one of the automatic cooking menus, and setting a buzzer sound when the rotary switch is rotated to the left and right in the menu setting step. To provide.

1 is a block diagram showing a rotary microwave oven with a buzzer applied to a preferred embodiment of the present invention.

Figure 2 is a detailed view of the rotary switch of Figure 1;

3 is a flow chart illustrating a process of buzzer sound when setting an automatic cooking menu of a rotary type microwave according to one embodiment of the present invention;

<Description of the code | symbol about the principal part of drawing>

10: microcomputer 20: rotary switch

30: start key 40: drive circuit

50: indicator 60: buzzer

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, a schematic block diagram of a rotary encoder type microwave oven with a buzzer 60 is shown.

The rotary encoder type microwave oven includes a microcomputer 10, a rotary switch 20, a start key 30, a driving circuit unit 40, a display unit 50, and a buzzer 60.

According to the present invention, each function used in the microwave is assigned a specific number, which is configured to be selected by the rotary switch 20.

As shown in FIG. 2, the rotary switch 20 is a circular rotary that can rotate left and right on an upper surface of a key panel (not shown) composed of respective keys for inputting menu settings, time and temperature, etc. of a microwave oven. It is configured to match the switch 20 to the desired number as the user intends.

For example, assuming that the number corresponding to a specific function is 538, in order to set the function assigned to the user by 538, the rotary switch 20 is turned on until the number increases from 0 to 5 on the display unit 50. Turn right, and again turn left until the number 3 on the display unit 50, and again performs a sequential process to turn right until the number 8 appears on the display unit 50 again. Therefore, a signal representing the number selected according to the left and right rotations of the rotary switch 20 is provided to the microcomputer 10.

In addition, a sensor (not shown) is installed at the lower part of the rotary switch 20 to detect the rotational direction of the rotary switch 20 at the left and right of the starting point of the rotary switch 20. Therefore, when the rotary switch 20 turns to the left, the automatic cooking mode is selected, and when the rotary switch 20 is turned to the right, the manual cooking mode is selected.

Therefore, the signal which detects the rotation direction of the rotary switch 20 is provided to the microcomputer 10.

After the automatic cooking is set by the left turn of the rotary switch 20, pressing the start key 30 enters the automatic cooking menu step. From this time, the rotary switch 20 is rotated left and right to select a specific number corresponding to various cooking. Set the auto cook menu by selecting.

At this time, the microcomputer 10 outputs a buzzer sound control signal to the buzzer 60 whenever the automatic cooking menu is set. Therefore, the buzzer 60 sounds a buzzer indicating that the automatic cooking menu step is performed, and the display unit 50 displays the outside using a light emitting element (not shown) in order to recognize the function mode. 40 may perform a corresponding cooking mode corresponding to the driving control signal output from the microcomputer 10.

3 is a flowchart illustrating a process of setting a function of a rotary encoder type microwave oven that sounds a buzzer when an automatic cooking menu is set by the rotary switch 20 as an embodiment of the present invention.

When the user rotates the rotary switch 20 to set the function, the microcomputer 10 determines whether it is left turn or right turn (step 100). First, if it is turned to the left, it is determined as the automatic cooking mode, and the character indicating the automatic cooking mode is displayed on the display unit 50 (step 102). Then, pressing the start key 30 for automatic cooking (step 104) enters the automatic cooking menu step, from which the rotary switch 20 is rotated left and right to select the cooking menu as the number (step). 106). When the automatic cooking menu is set by rotating the rotary switch 20, when the automatic cooking menu is set, a buzzer sound is generated through the buzzer 60 (step 108) and the automatic cooking number corresponding to the display unit 50 is displayed ( Step 110).

Through the above-described steps, the buzzer sounds when the automatic cooking menu is set in the rotary type microwave and the user recognizes that the automatic cooking.

As described above, the present invention relates to a method for sounding a buzzer when setting an automatic cooking menu of a rotary microwave oven, and when cooking food using a rotary encoder type microwave oven, an automatic cooking step or a manual cooking step is displayed on an indicator. Excluding the inefficiency of the display only, when the user performs manual cooking and automatic cooking at the same time, it is easy to set the automatic menu, so that you can get involved in other things besides cooking.

Claims (1)

In the automatic cooking menu setting method of the microwave oven using a rotary switch rotatable in the left and right directions, (a) an automatic cooking selection step of rotating the rotary switch in a preset direction; (b) setting one of the automatic cooking menus by rotating the rotary switch in the left and right directions; (c) a buzzer sound generation step when the rotary switch is turned left and right in the menu setting step.