KR19980085396A - Alarm Method for Door Open of Microwave Oven - Google Patents

Abstract

The present invention relates to an alarm method for opening a door of a microwave oven, and when the door is opened during cooking or before / after cooking or when it is forgotten or left for a long time for other purposes, the life of the cavity lamp is lowered and the cavity lamp is turned on. There was a problem of power consumption due to the problem, and in particular, when the food is inverted during cooking or the door is opened for other purposes and left for a long time for other purposes, the temperature of the food is severely generated, resulting in poor quality of the food. There was this.

Therefore, the present invention comprises the steps of determining whether the door is opened (10) by the signal from the door opening and closing detection unit (2); Determining whether cooking is performed when the door is opened (20); Determining whether the predetermined time has elapsed while cooking and generating a door-opening alarm sound during cooking by the alarm sound generator 5 when the predetermined time elapses; In the case of not cooking and before / after cooking, it is determined whether a predetermined time has elapsed, and when a predetermined time has elapsed, the user may close the door by the alarm sound generating unit 5 to generate a pre- / after door opening alarm sound 32. Until the microcomputer (3) is repeatedly performed by the signal of the door opening and closing detection unit (2) to extend the life of the cavity lamp, reduce power consumption and obtain a good food.

Description

Alarm method when opening door of microwave oven

The present invention relates to a method of alarming when a door is opened in a microwave oven, and more particularly, an electronic device that allows the user to immediately close the door by emitting an alarm sound after a predetermined time elapses during cooking and before / after cooking. It is to provide an alarm method when the door of the stove is opened.

In general, a microwave oven is an electronic device that cooks food by using a high frequency oscillated from a magnetron, and has a thawing function, a warming function, and a cooking function by a multi-stage output of the magnetron.

In addition to the magnetron, there is a grill cooking function using a heater and a combination function using a heater and a magnetron at the same time, and an oven function of circulating hot air in the cooking chamber with a convection heater and a convection pan installed at the rear of the cooking chamber.

In such a microwave oven, a cooking method uses a sensor to detect the humidity generated from the food according to heating and automatically controls the cooking time, and the cooking amount according to the cooking name and serving. There is a program type automatic cooking control method that finds a cooking time set by experiment in advance by inputting manually and performs heating control during the cooking time.

In order to cook in a microwave oven as described above, when the power is connected, the food is put into the cooking chamber, the door is closed, the output level is selected, the cooking function is selected, and the start key is pressed to start cooking.

In this microwave oven, the cavity lamp is installed and the cavity lamp is turned on when cooking to check the cooking status of the food, and the door can be easily brought into the cooking chamber and taken out of the cooking chamber before and after cooking. The cavity lamp lights up when is opened.

Such a cavity lamp has a problem caused as follows, as it is kept lit when the door is open.

That is, when the door is opened during cooking and before / after cooking, or if it is left for a long time for other purposes, the life of the cavity lamp is reduced, and there is a problem of power consumption due to the lighting of the cavity lamp, especially during cooking. If you leave the door for a long time after flipping or opening the door for other purposes, the temperature of the food is badly generated, there is a problem that the quality of the cooking state of the food falls.

Thus, when the door is not closed immediately after opening the door during cooking and before / after cooking, there is a problem of reducing the life of the cavity lamp and power consumption.In particular, when the door is not immediately closed during cooking, Cold air flows into the cooking chamber, and the environment of the cooking chamber is changed, thereby reducing the cooking state of the food.

Accordingly, an object of the present invention is to solve the conventional problems, and to minimize the temperature deviation of the food by allowing the user to close the door immediately after a certain time elapses when the door is opened during cooking and before / after cooking. To provide a good cooking condition, to extend the life of the cavity lamp and to reduce the power consumption to provide an alarm method for opening the door of the microwave oven.

The object of the present invention is to detect whether the door is open and then to determine whether the cooking during opening the door when cooking a certain time elapses when cooking, while cooking, but not during cooking, even before cooking / after cooking When the time elapses, the step of generating a pre / post alarm sound is achieved by incorporating a program in the microcomputer that is repeatedly executed until the user closes the door.

1 is a schematic block diagram of a driving apparatus of a microwave oven according to the present invention;

2 is a flowchart illustrating an operation of emitting an alarm sound when the door is opened according to the present invention.

Explanation of symbols for main parts of the drawings

1: Key input unit 2: Door opening and closing detection unit

3: microcomputer 4: load driver

5: alarm sound generating unit

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram of a driving apparatus of a microwave oven according to the present invention, and FIG. 2 is a flowchart illustrating an operation of emitting an alarm sound during cooking and before / after cooking of the door according to the present invention. As shown in the present invention, a key input unit 1 for receiving various operation key signals such as function selection through a keypad; A door open / close detection unit 2 detecting an open / closed state of the door; A door open alarm program and various control programs are stored, and the microcomputer 3 controls the program according to the program by the key signal and the door open / close signal; A load driver 4 controlled by the microcomputer 3 to drive various loads such as a magnetron and a heater; And an alarm sound generating unit 5 controlled by the microcomputer 3 to sound a door open alarm.

As described above, the door open alarm method of the present invention which emits an alarm sound when the door is opened by the microcomputer 3 detects whether the door is opened by a signal of the door opening / closing detection unit 2 and is cooking when the door is opened. In the case of cooking, when the predetermined time elapses, the alarm sound generating unit (5) generates a door opening alarm during cooking, and when the predetermined time elapses even when cooking before and after cooking, the alarm sound generating unit (5). Through the step of generating the pre- / post-door alarm through the cooking is made to continue to repeat until the user closes the door.

That is, the step (10) of determining whether the door is opened by the signal from the door opening and closing detection unit (2); Determining whether cooking is performed when the door is opened (20); Determining whether the predetermined time has elapsed while cooking and generating a door-opening alarm sound during cooking by the alarm sound generator 5 when the predetermined time elapses; In the case of not cooking and before / after cooking, it is determined whether a predetermined time has elapsed, and when a predetermined time has elapsed, the user may close the door by the alarm sound generating unit 5 to generate a pre- / after door opening alarm sound 32. The microcomputer 3 is configured to repeat by the signal of the door opening and closing detection unit 2 until the signal.

Referring to the operation according to the alarm method when opening the door of the present invention configured as described above are as follows.

When the door is closed and the cooking function is selected through the keypad, the microcomputer 3 controls the load driver 4 by the control program by the key signal of the key input unit 1 and the door close signal of the door open / close detection unit 2. The control signal is outputted to control cooking according to the key signal.

As described above, the microcomputer 3 detects whether the door is opened during cooking and determines whether cooking is being performed, and then checks a predetermined time (eg: 10 seconds) after opening the door when cooking. When the predetermined time elapses, the door opening alarm sounds during cooking through the alarm sound generating unit 5, and if the predetermined time elapses after checking the predetermined time (for example, 60 seconds) after the door is opened before or after cooking. Through the alarm sound generating unit 5 is to emit a pre- / after door open alarm sound.

If the door is closed and the predetermined time has not elapsed, the routine is repeated.

The routine is repeated as described above until the user closes the door and the microcomputer 3 does not recognize the alarm sound.

In this case, after a certain time has elapsed since the door is opened, the alarm sounds once and then repeats the door open check routine again. It is also desirable to allow the user to heighten the awareness of the door opening.

As described above, the present invention has a built-in program of the door open alarm method in the memory of the microcomputer so that the user can close the door immediately by emitting an alarm sound through the alarm sound generating unit when detecting the door open.

As described above, according to the present invention, when the door is opened during cooking and before and after cooking, the user emits an alarm sound after a predetermined time and induces the user to close the door so that the cavity lamp is turned off and its life is extended. It is possible to reduce the consumption, and to maintain a good cooking state of the food caused by the temperature deviation of the food due to the opening of the door during cooking.

Claims (1)

The microcomputer 3 outputs a control signal in response to various key signals of the key input unit 1 and the door open / close signal of the door open / close detection unit 2, and the load driver 4 drives various loads according to the control signal. In the microwave oven, after detecting whether the door is opened by the door opening and closing signal to determine whether it is cooking when opening the door, when cooking, if a certain time elapses when cooking, the door opening alarm sound during cooking through the alarm sound generating unit (5) After the predetermined time has elapsed, if the cooking time is not being cooked, the alarm sound generating unit 5 generates a different alarm sound than the door open alarm sound during cooking until the user closes the door. Door open alarm method of the microwave oven, characterized in that.