KR920006924B1 - Position control method of turntable of electronic range - Google Patents

Abstract

The method controls positioning the fryfan knob in the front of the micro wave oven after finishing, to make it easy to take out the pan on a turn table within the micro wave oven. The method comprises a routine of checking the selected food menu by a microprocessor, selecting the direction of actuating the turn table, rotating the turn table for an initial 5 seconds, reciprocatingly rotating the turn table until finishing cooking, and positioning the pan knob on the backside of the microwave oven; a routine (B) of positioning the pan knob on the front of the oven by rotating the turn table with a certain angle.

Description

Position control method of fry pan handle on turntable

1 is a reference diagram of a typical microwave oven.

2 is a reference diagram when using a frying pan.

3 is a circuit diagram of a typical microwave oven.

4 is a flow chart of a frying pan fixing program according to the present invention.

* Explanation of symbols for main parts of the drawings

5: turntable 5a: turntable motor

12a: Fry Pan Key

The present invention relates to a microwave oven provided with a frying pan function, which is a frying pan handle which is placed on a turntable which allows the user to conveniently take out the frying pan by positioning the handle of the frying pan at the front of the microwave oven at the end of cooking of the frying pan function. It is related to the exact position control method of.

The technical configuration of a general microwave oven is a closed circuit by connecting the fuse (1), the thermostat (2), the primary safety switch (3) and the monitor switch (4) to an AC power source as shown in the circuit diagram of FIG. The turntable relay 5a and the turntable motor 5b for driving the turntable 5 are connected to the monitor switch 4 in parallel, and an oven lamp / fan motor relay for driving the oven lamp and the fan motor ( 6a) and the oven lamp 6 and the fan motor 6b are connected in parallel, and the main relay 7a and the heater driving unit 7 are connected in parallel, at which time the turntable relay 5a and the oven lamp / fan are connected. The motor relay 6a and the main relay 7a are controlled by the microcomputer 8 so that their driving terminals are connected to the microcomputer 8.

In the prior art of such a configuration, first, as shown in FIGS. 1 and 2, the door 9 of the microwave oven is opened, and the food 10 for cooking on the turntable 5 inside the main body is placed in a frying pan. After the door 9 is closed, the monitor switch 4 is turned off accordingly, and the primary safety switch 3 is turned on to supply power to the microcomputer 8. At this time, when the user selects and presses the key matrix 12 provided on the external panel 11 to perform the cooking function, the main relay 7a, the turntable relay 5a, and the oven lamp / fan motor relay according to the pressed key. The microcomputer 8 is driven by 6a.

In this way, when cooking is in progress, the consumer can see the cooking progress through the viewing window of the door 9, and when the cooking is completed, the door 9 is opened and the food 10 is taken out. The handle 13 of the frying pan is placed in front of the pan immediately before cooking, and even when the cooking is started, the turntable 5 is rotated in one direction by the motor. In some cases, when the handle of the frying pan is located at the rear while the inside of the main body and the food container are hot, there is a risk of being uncomfortable and a burn.

The present invention is to improve the conventional problem to control the rotational direction of the turntable motor in the microcomputer to position the handle position of the frying pan placed on the turntable to the inner rear at the time of cooking, and to the inner front at the end of cooking. If this is described in detail by the accompanying drawings as follows.

That is, as shown in FIG. 2, a separate frying pan key 12a is provided in the key matrix 12 of the microwave oven panel 11, and the key set state of the frying pan key 12a is changed to the micom 8 The turntable motor 5b for reading from and rotating the turntable 5 is constructed using a bidirectional motor.

As shown in FIG. 4, when the cooking function is selected by checking the key input state by the microcomputer 8, the rotation direction of the first 5 seconds and the last 5 seconds are reversed each other every 10 seconds. 5b) is driven, the frying pan handle fixed position control routine 40 is built in the microcomputer (8).

The present invention configured as described above has the following operations and effects.

Put the food in the frying pan, put the handle on the turntable (5) inside the main body, close the door and press the cooking selection key on the key matrix (12) provided in the panel (11) to the relay control signal of the microcomputer (8). Accordingly, each of the relays 5a-7a is driven to perform cooking. At this time, when the turntable relay 5a is driven by the microcomputer 8 to drive the turntable 5, the turntable motor ( 5a) repeats the 180 ° reciprocation in the clockwise or counterclockwise direction every 10 seconds.

In other words If the period is entered first, it will rotate clockwise When the period is input, it rotates counterclockwise.

In this way, if the turntable motor 5a having the rotational direction is set as described above and the cooking selection key is pressed on the key matrix 12 and the frying pan 12a is pressed separately, the microcomputer 8 scans the key input state. (Step 21, 22) Range cooking is performed. This process sets the driving direction of the turntable motor 5a for the first 5 seconds and rotates it 180 ° (step 23), and then heats it until the cooking is finished. If you set the motor drive time to 10 seconds with a 10-second cycle (step 24), the turntable motor will continue 180 ° reciprocating clockwise and counterclockwise (steps 24 and 25). Execute routine A with the handle of the pan at the rear, and when cooking is completed, check the input state of the frying pan key 12a (step 31), and if the frying pan key 12a is input, turntable motor 5 After a) is driven for 5 seconds (steps 32 and 33), routine B is performed to place the handle on the front side which is 180 ° from the rear side.

Therefore, the present invention can be controlled to put the handle of the container to put food in the rear position of the inside of the main body after the end of cooking and to be placed in the front position of the inside of the main body after the completion of cooking to prevent burns by the container and also the motor By varying the driving time, the handle position can be freely controlled.

Claims (1)

In a microwave oven equipped with a frying pan cooking function, when the cooking function is selected by checking the key input state by the microcomputer (8), the direction of rotation of the turntable motor (5a) is arbitrarily selected for the first 5 seconds, and rotated by a predetermined angle. After that, until the end of cooking, the motor driving cycle is set for a certain time to continue the reciprocating rotation in the clockwise and counterclockwise direction. In this case, when the glass is completed, when the frying pan key 12a is input, the frying pan handle composed of a routine B which rotates the turntable motor 5a again by the predetermined angle so that the handle is positioned at the front of the inside. Position control method of the frying pan handle placed on the turntable, characterized in that the position control routine (40).