KR100267934B1 - Microwave oven and control method thereof - Google Patents

Abstract

PURPOSE: A microwave oven and a method controlling the oven are provided not to open a door in cooking or not in using. CONSTITUTION: A control unit detects supply of power from a power supply unit. By not detecting the power, a locking unit is controlled for a locking pin to penetrate a locking hole on a side surface of a door. By detecting the power, the locking pin is removed from the locking hole of the door. In a standby state of a microwave oven, a user inputs a cooking command through a key input unit. The control unit detects input of the cooking command for generating a driving signal to the locking unit. Thus, the door is locked. After completing cooking, the control unit releases the locked state of the door through the locking unit.

Description

Microwave and Control Method

The present invention relates to a microwave oven and a control method thereof.

A microwave oven is a cooking appliance that cooks food in a cooking chamber by induction heating by radiating ultra-high frequency generated from the magnetron into the cooking chamber.

Such a microwave oven has an outer casing which integrally surrounds a main body forming a cooking chamber and a component chamber provided on the side of the cooking chamber, and a front door of the cooking chamber is provided with an opening and closing door for putting or removing food. The component chamber is provided with a microwave generating magnetron mounted on the upper edge region of the main body, a cooling fan installed on the rear wall of the component chamber, and a driving motor for driving the cooling fan. On the front of the parts compartment, a display unit for indicating the operation state and an operation panel provided with the button unit are installed.

However, when the microwave oven is used, young children open the door during cooking, which may interfere with cooking, and a part of the body of the young child may come into contact with the food being cooked, resulting in burns. There is a problem that the user may open and close the door frequently and the door may be broken.

The present invention has been made to solve the above problems, and an object thereof is to provide a microwave oven and a control method for preventing the door from opening when the microwave oven is being cooked or not in use.

1 is a perspective view showing a microwave oven according to the present invention,

2 is a perspective view showing the door lock state of FIG.

3 is a perspective view showing a door release state of FIG.

4 is a block diagram showing a microwave oven according to the present invention;

5 is a flowchart illustrating a method of controlling a microwave oven according to the present invention.

<Explanation of symbols for main parts of drawing>

2: cooking chamber 3: door

5: door locking member 6: door locking groove

10: locking ball 11: locking unit

12 solenoid member 13 working rod

14: elastic member 15: sealing part

21: power supply 22: key input

23: control unit 24: switching unit

25: magnetron

According to the present invention, there is provided a microwave oven having a main body and a door that is pivotally opened and closed on a front surface of the main body, comprising: a locking hole formed at one side of the main body and the door; Locking pins installed on the other side of the main body and the door to move between a locking position inserted into the locking hole and a released position to be withdrawn, and transfer the magnet to the locking pin so that the locking pin moves between the locking position and the unlocking position. It is achieved by a microwave oven, characterized in that it comprises a locking unit having a solenoid member.

Here, the locking hole is preferably formed in the door in the horizontal direction of the opening direction. The controller may further include a control unit configured to supply an electrical signal to the locking unit to move between the locking position and the unlocking position of the locking pin according to whether power is supplied and cooking progress. Alternatively, when the power supply is not made, by controlling the locking pin to be in the locked position, it is possible to prevent a safety accident or unnecessary opening and closing of the door.

According to another aspect of the present invention, there is provided a control method of a microwave oven having a main body and a door attached to a front surface of the main body, the method comprising: providing a locking unit for locking and unlocking the door; Detecting a cooking command from the outside; It may also be achieved by a method for controlling a microwave oven comprising operating the locking unit during cooking by the cooking command to lock the door.

Here, detecting the power supply; If the power supply is not detected, it is preferable to further include the step of locking the door by operating the locking unit.

Hereinafter, a microwave oven and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a microwave oven according to the present invention, Figure 2 is a perspective view showing a door lock state of Figure 2, Figure 3 is a perspective view showing a door release state of Figure 1, Figure 4 is an electronic according to the present invention 5 is a block diagram illustrating a microwave oven, and FIG. 5 is a flowchart illustrating a method for controlling a microwave oven according to the present invention.

As shown in FIG. 1, the present microwave oven has a main body 1 having a tubular shape and forming a cooking chamber 2 for accommodating food, and a door 3 for rotating and opening the front opening of the cooking chamber 2. . The door 3 is rotatably connected to the main body 1 by the hinge bracket 4. At least one door locking member protruding from the opposite free end region of the hinge bracket 4 of the door 3; 5) is inserted into the door locking groove 6 formed on the front of the main body 1 is held. A locking hole 10 of a predetermined size is formed in the side end surface of the free end of the door 3 in the horizontal direction of the door opening direction. On the other hand, the right side of the main body 1 is provided with a control panel 8 equipped with a plurality of operation switches 7 for operating the operation of the microwave oven, and the turntable (not shown) on the bottom of the inside of the cooking chamber 2 The rotary ring 9 is provided to move the driving path so that the city may rotate.

As shown in FIGS. 2 and 3, the locking unit 11 is formed inside the operation plate 8 in an area where the locking hole 10 faces the solenoid member 12 and the locking pin 13. ) And an elastic member 14 that provides an elastic force to protrude the locking pin 13 from the solenoid member 12. The locking pin 13 is accommodated in the rod receiving portion 15 of the solenoid member 12 and reciprocates by a magnetic field generated when power is supplied to the solenoid member 12. The locking pin 13 of the locking unit 11 is coupled to the locking hole 10 in the state where the door locking member 5 is held by the door locking groove 6 by the reciprocating motion, thereby locking and unlocking. do.

As illustrated in FIG. 4, the microwave oven is input from a power supply unit 21 for supplying commercial power to the system, a key input unit 22 for inputting a cooking command desired by the user, and a key input unit 22. The control unit 23 generates a cooking control signal in response to the command, the switching unit 24 for providing power based on the cooking control signal, and the power supplied from the switching unit 24 to receive the microwave from the cooking chamber 2. It has a radiating magnetron 25. The control unit further includes a locking unit 11 that locks the door 3 when the cooking control signal of the controller 23 is generated.

The control unit 23 detects the commercial power from the power supply unit 21 and generates a lock control signal to the locking unit 11 to lock the door 3 when power is sensed and cooking is performed by a cooking command. . In addition, even when the commercial power is not detected to generate a lock control signal to lock the door (3).

As described above, the locking pin 13 is locked by a magnetic field generated when power is supplied to the solenoid member 12 so that the door 3 can be locked by the locking unit 11 in a state where commercial power is not supplied. Unlock from the ball 10 so that the locking unit 11 is unlocked. When the power source is cut off to the solenoid member 12, the locking pin 13 is coupled to the locking hole 10 by the elastic force generated from the elastic member 14 so that the locking unit 11 is locked.

The control method of the microwave oven configured as described above is illustrated in FIG. 5. First, the control unit 23 detects whether the commercial power is supplied from the power supply unit 22 (S1), and if not detected, controls the locking unit 11 to lock the locking pin 13 to the side of the door 3. Penetration is maintained through the formed locking hole (10) (S2), if detected, the locking unit 11 is controlled so that the locking pin 13 is separated from the locking hole (10) of the door (3) S3). This locks the door 3 by keeping the locking pin 13 penetrating through the locking hole 10, and unlocking the door 3 by leaving the locking pin 13 away from the locking hole 10.

As such, after the preparation for operating the system of the microwave oven is completed, the user inputs a desired cooking command through the key input unit 22. Therefore, when the controller 23 senses whether the cooking command is input (S4), the control unit 23 generates a driving signal to the locking unit 11 to lock the door and the magnetron 25 through the switching unit 24 at the same time. Microwaves are emitted into the cooking chamber 2 (S5), and the unlocked state of the door 3 is maintained until there is an input. When the food in the cooking chamber 2 is completed in the desired cooking state by the microwaves of the magnetron 25 (S6), the control unit 23 unlocks the door 3 through the locking unit 11 (S7).

Meanwhile, in the above-described embodiment, the control unit supplies and cuts the power to the locking unit to lock and unlock the locking unit. However, a separate switch is provided outside to operate the locking unit when the user desires. It may be.

The present invention does not use the microwave, or because the door is locked during operation of the microwave to prevent injuries of young children, and to prevent damage to the door due to frequent opening of the door to further improve the safety of the microwave. It is effective to improve.

Claims (6)

A microwave oven having a main body and a door rotatably opened and closed on a front surface of the main body, comprising: a locking hole formed at one side of the main body and the door; A locking pin installed at the other side of the main body and the door and movable between a locking position inserted into the locking hole and a released position to be withdrawn, and transmitting a magnetic field to the locking pin to move the locking pin between the locked position and the released position; Microwave oven comprising a locking unit having a solenoid member. The microwave oven according to claim 1, wherein the locking pin is inserted into and released from the locking hole by a solenoid. And a control unit for supplying an electrical signal to the locking unit to move between the locking position and the releasing position of the locking pin according to whether power is supplied and cooking progress. The microwave oven according to claim 3, wherein the control unit controls the locking pin to be in a locked position when cooking food or when power is not supplied. A control method of a microwave oven having a main body and a door attached to a front surface of the main body, the method comprising: providing a locking unit for locking and unlocking the door and detecting a cooking command from the outside; Operating the locking unit during cooking by the cooking command to lock the door. 6. The method of claim 5, further comprising: sensing a power supply; And controlling the door by operating the locking unit when the power supply is not detected.

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