KR20100081241A

KR20100081241A - Microwave oven and control method for microwave oven door

Info

Publication number: KR20100081241A
Application number: KR1020090000558A
Authority: KR
Inventors: 이창호
Original assignee: 주식회사 대우일렉트로닉스
Priority date: 2009-01-05
Filing date: 2009-01-05
Publication date: 2010-07-14

Abstract

PURPOSE: A microwave oven and a method for controlling the door thereof are provided to enable a user to easily open and close a cavity by automatically operating a door through the detection of contact with a user. CONSTITUTION: A microwave oven comprises a case(110), a door(130), an operation unit(140), and a sensor(151). The case comprises a cavity(111). The door is installed in the case and opens and closes the cavity. The drive unit controls the operation of the door. The sensor senses the opening of the door and transfers signals to the drive unit. A handle(150) with the sensor is installed on the door.

Description

MICROWAVE OVEN AND CONTROL METHOD FOR MICROWAVE OVEN DOOR}

The present invention relates to a door control method of a microwave oven and a microwave oven, and more particularly, to a door control method of a microwave oven and a microwave oven which can be conveniently used by operating the door automatically.

In general, a microwave oven is a cooking device capable of cooking food using microwaves. Microwaves generated from a magnetron to which high voltage is applied are irradiated into the food inside the cooking chamber through a waveguide, and water molecules contained in the food are irradiated. Vibration generates heat.

Microwave ovens can cook a variety of foods in a variety of ways by appropriately adjusting the microwave output and the time the microwave is irradiated to the food, it is also used to heat the already cooked food or to melt frozen food.

The microwave oven is provided with a cooking chamber in which food is cooked, a tray in which food to be cooked is placed at the bottom of the cooking chamber, and a motor for rotating the tray at the lower side of the tray.

The cooking chamber side is provided with an electric chamber, and the electric chamber is equipped with a magnetron and a high voltage condenser for generating microwaves, a high pressure transformer for applying a high voltage to the magnetron and the high pressure condenser, and a cooling fan.

The outer circumferential surface of the cooking chamber is provided with a case forming the appearance of the microwave oven, and the front of the case is provided with a door for opening and closing the cooking chamber and an operation panel for setting various cooking conditions and for operating or stopping the microwave oven.

If the user pulls the door by hand, the user has to create excessive force, which causes trouble to open and close the door. In addition, there is a fear that the case moves together with the door while opening and closing the door. Therefore, there is a need for improvement.

The present invention has been made by the necessity as described above, and an object thereof is to provide a microwave oven and a door control method of the microwave oven which can easily open the door. In addition, an object of the present invention is to provide a microwave oven and a door control method of the microwave oven in which there is no fear that the case is moved when the door is opened or closed.

Microwave according to an aspect of the present invention includes: a case having a cooking chamber; A door installed in the case to open and close the cooking chamber; A driving unit controlling the operation of the door; And a detector for detecting a opening operation of the door and transmitting a signal to the driver.

In one embodiment, the door is further provided with a handle on which the detection unit is mounted.

In one embodiment, the sensing unit is an electrostatic pad for detecting a change in electrical resistance.

In one embodiment, it further comprises a push pole mounted on the case and pressurizing the door.

In one embodiment, the drive unit, a motor; And one side is connected to the door and the other side has a wire that is wound or unrolled in conjunction with the motor.

In one embodiment, the lower side of the door is hinged to the case so that the door is rotated up and down, the upper side of the door is connected to a wire for controlling the rotational speed of the door.

Door control method of a microwave oven according to another aspect of the present invention; Holding a handle provided with a sensing unit; Transmitting a signal for a change in electrical resistance sensed by the detector to a controller; And driving the driving unit to open the door of the microwave oven.

In one embodiment, opening the door comprises controlling the opening speed of the door by a wire.

In the microwave and the door control method of the microwave oven according to the present invention, the door is automatically operated by detecting the user's contact can easily open and close the cooking chamber.

In addition, the present invention, there is no need to apply excessive force when opening and closing the door, there is no hassle and there is no fear of moving the case with the door while opening and closing the door, there is no need to reposition the microwave after cooking.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a microwave oven and a door control method of the microwave oven according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a view showing a microwave oven according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a push pole state in accordance with an embodiment of the present invention, Figure 3 is an embodiment of the present invention It is sectional drawing which shows the state in which the press pole of the push pole was released.

1 to 3, the microwave oven includes a case 110 in which a cooking chamber 111 having an open front surface is formed therein, and a door provided at the front of the case 110 and opening / closing the cooking chamber 111 ( 130) and an operation panel 117 for setting various cooking conditions and for turning on or off the microwave.

The bottom surface of the cooking chamber 111 is provided with a tray 115 in which food to be cooked is placed, and a tray motor (not shown) for rotating the tray 115 is provided below the tray 115. On the side of the cooking chamber 111 is provided with a full-length chamber 120, a high-voltage capacitor is applied to the magnetron 121 and the high-voltage condenser (not shown), the magnetron 121 and the high-voltage capacitor to generate microwaves The high pressure transformer 122, and the cooling fan 123 is provided.

The magnetron 121 for generating microwaves is mounted on the sidewall of the cooking chamber 111 to communicate with the cooking chamber 111 through a waveguide (not shown). On one sidewall of the cooking chamber 111 to which the waveguide is attached, a communication hole (not shown) for communicating the inside of the cooking chamber 111 and the waveguide is formed.

The microwave oven includes a driver 140 for controlling the operation of the door 130 and a detector 151 for detecting a opening operation of the door 130 and transmitting a signal to the driver 140.

The door 130 is opened to allow food to be put into or taken out of the cooking chamber 111, or the parts of the electrical equipment chamber 120 are operated so that microwaves generated in the cooking chamber 111 do not leak out of the cooking chamber 111. When the 130 is closed, the sensing unit 151 which detects the opening operation transmits a signal of the opening to the driving unit 140, and the door 130 is interlocked with the operation of the driving unit 140 receiving the signal. It is opened and closed.

The door 130 further includes a handle 150 on which the sensing unit 151 is mounted, and the sensing unit 151 may be an electrostatic pad sensing a change in electrical resistance.

The upper end of the door 130 is provided with a handle 150 that can be easily grasped by the user to facilitate the opening and closing of the door 130, and as shown in the figure, the sensing unit 151 is provided inside the handle 150 It is preferred to be provided. The sensing unit 151 is formed of an electrostatic pad, and when a user's contact occurs, detects a change in electrical resistance and transmits a signal according to the change in electrical resistance to the driver 140.

The microwave oven further includes a push pole 160 mounted to the case 110 to pressurize the door 130. The push pole 160 is provided on the outside of the spring 163 and the spring 163 and is moved by the restoring force of the spring 163 to move the pressing portion 130 and the spring 163, one end In contact with and may include a housing 165 provided on the outside of the moving part 161.

The driving unit 140 includes a motor 143 and a wire 141 which is connected to the door 130 and the other side is wound or unrolled in conjunction with the motor 143.

When the door 130 is closed, the wire 141 coupled to both ends of the motor 143 is wound on both shafts of the motor 143 to draw the wire 141 coupled to one side of the door 130 to pull the wire 141. The released length of the shortened, and in conjunction with the wire 141, the door 130 is pulled to the case 110 side.

When the door 130 is opened, the wire 141 coupled to both ends of the motor 143 is released from both shafts of the motor 143, so that the unrolled length of the wire 141 coupled to one side of the door 130 is long. One side of the door 130 is moved away from the case 110 in conjunction with the wire 141.

Here, the guide member 170 is further provided in the microwave oven so that the wire 141 can be combined with the motor 143 without being twisted. The guide member 170 may be coupled to the case 110 and may have a cylindrical shape in which an inner circumferential surface is concave so that the wire 141 may be seated.

The lower side of the door 130 is hinged to the case 110 so that the door 130 rotates up and down, and the wire 141 for controlling the rotational speed of the door is connected to the upper side of the door 130. The door 130 rotates up and down by moving the upper side of the door 130 in conjunction with the driving unit 140 with the lower side as the rotation axis. The operating speed of the wire 141 is increased in proportion to the rotational speed of the motor 143.

The door 130 is opened so that food is placed in the tray 115 placed on the bottom surface of the cooking chamber 111 and the cooking chamber 111 is closed.

The cooking chamber 111 is closed, and the operation panel 117 is operated to set cooking conditions and operate the microwave oven. When the microwave oven is operated, microwaves are generated in the magnetron 121 by the high voltage applied from the high voltage transformer 122, and the microwaves are guided into the cooking chamber 111 through the waveguide to the food placed in the tray 115. Cooked by the microwaves to be irradiated.

At the rear of the high pressure transformer 122, a cooling fan 123 for cooling the electrical components such as the magnetron 121 and the high pressure transformer 122 is mounted. The air sucked by the cooling fan 123 circulates inside the electric chamber 120 and cools the electric component, and then is discharged to the outside.

The tray 115 is rotated at a constant speed by the tray motor, and the food placed in the tray 115 is heated evenly.

Hereinafter will be described a control method of the microwave oven as described above.

4 is a flowchart illustrating a door control method of the microwave oven according to an embodiment of the present invention.

Referring to FIG. 4, the door control method of the microwave oven includes a step (S110) of holding a handle 150 provided with a sensing unit 151, and a signal for a change in electrical resistance detected by the sensing unit 151. And transmitting to S180 (S120) and driving the driving unit 140 to open the door 130 of the microwave oven (S130).

When the user grips the handle 150 and a change in electrical resistance occurs in the electrostatic pad, the controller 180 rotates the motor 143 in response to a signal generated by the sensing unit 151, and by rotating the motor 143. The wire 141 coupled to one side of the motor 143 is wound or unwinded to open and close the cooking chamber 111.

Opening the door 130 (S130) includes controlling the opening speed of the door 130 by the wire 141. The controller 180 rotates the motor 143 at a set speed so that the winding and unwinding speed of the wire 141 is set in association with the rotation of the motor 143, and the opening speed of the door 130 is increased and decreased in conjunction with this.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a view showing a microwave oven according to an embodiment of the present invention;

2 is a cross-sectional view showing a push pole in a pressurized state according to an embodiment of the present invention;

3 is a cross-sectional view showing a state in which the push pole is released from the press according to an embodiment of the present invention;

* Description of the symbols for the main parts of the drawings *

110 ... case 111 ... cooking room

115 ... tray 117 ... operation panel

120 ... battlefield 121 ... magnetron

High pressure transformer 123 Cooling fan

130 ... door 140 ... drive section

141 ... wire 143 ... motor

150 handle 151 detector

Claims

A case having a cooking chamber;

A door installed in the case to open and close the cooking chamber;

A driving unit controlling the operation of the door; And

And a detector configured to detect an opening operation of the door and transmit a signal to the driver.

The method of claim 1,

The door is characterized in that the microwave oven further comprises a handle to be mounted.

The method of claim 1,

The sensing unit is a microwave oven, characterized in that the electrostatic pad for detecting a change in electrical resistance.

The method of claim 1,

And a push pole mounted on the case to pressurize the door.

The method of claim 1, wherein the driving unit,

motor; And

One side is connected to the door and the other side is connected to the motor, characterized in that it has a wire wound or unwinding.

The method of claim 1,

The lower side of the door is hinged to the case so that the door is rotated up and down,

And a wire for controlling a rotation speed of the door is connected to an upper side of the door.

Holding a handle provided with a sensing unit;

Transmitting a signal for a change in electrical resistance sensed by the detector to a controller; And

And driving the driving unit to open the door of the microwave oven.

The method of claim 7, wherein

The step of opening the door comprises the step of controlling the opening speed of the door by a wire door control method of a microwave oven.