KR100751802B1 - Apparatus for preventing moisture in microwave oven door and method thereof - Google Patents

Abstract

An apparatus for preventing generation of moisture on a microwave oven door and a method thereof are provided to effectively circulate air through a suction port during a cooking process. An apparatus for preventing generation of moisture on a microwave oven door includes a cooking chamber(110a), a door, a suction port, a humidity sensor(190), and a damper guide device(130). The cooking chamber is disposed inside an inner case. The door is installed in the front of the cooking chamber. The suction port is formed on a sidewall of the cooking chamber. The humidity sensor is installed at one side of the cooking chamber. The damper guide device is installed at one side of the suction port. The damper guide device includes a damper(150) for selectively guiding the suction port, a power supply for providing power to the damper, and a detection sensor part(170) for detecting operation of the damper.

Description

Moisture prevention device of microwave oven door and control method {APPARATUS FOR PREVENTING MOISTURE IN MICROWAVE OVEN DOOR AND METHOD THEREOF}

1 is a perspective view showing a microwave oven according to the prior art.

2 is a cross-sectional view showing a microwave oven according to the prior art.

3 is a perspective view illustrating an internal exhaust port and an intake port of a microwave oven according to the related art.

FIG. 4 is a perspective view illustrating a damper, a motor, a damper detecting sensor, and a humidity sensor before coupling as an embodiment of a moisture preventing device for a microwave oven door according to the present invention.

FIG. 5 is a left side view illustrating a damper before acting as an air guide of an intake port as an embodiment of the moisture preventing device according to the present invention.

6 is a front view of FIG. 5.

FIG. 7 is a plan view of FIG. 5.

8 is a left side view showing the damper when acting as an air guide of the intake port as an embodiment of the moisture barrier of the microwave oven door according to the present invention.

9 is a front view of FIG. 8.

10 is a plan view of FIG. 8.

11 is a front view showing before and after assembling the damper and the driving device as an embodiment of the moisture barrier of the microwave oven door according to the present invention.

12 is a flowchart illustrating a method for controlling moisture of a door of a microwave oven according to the present invention.

Explanation of symbols on the main parts of the drawings

110: outer case 110a: cooking chamber

111: inner case 115: door

120: total length room 130: damper guide device

135: cooling fan 140: intake vent

140a: porous part 145: damper stopper

150: damper 160: power unit

170: detection sensor unit 190: humidity sensor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, to an apparatus for preventing moisture of a microwave oven door and a method of controlling the same, which prevent moisture from occurring in the door of the microwave oven.

In general, a microwave oven is a cooking apparatus that cooks food using microwaves in a short time. Microwaves generated from a magnetron to which high voltage is applied are irradiated to food in the cooking chamber through a waveguide. By vibrating the water molecules contained therein to generate thermal energy, the food is heated and cooked therein.

These microwaves can be used to cook a variety of foods in a variety of ways by appropriately adjusting the microwave output and the time the microwaves are irradiated to the food, and can also be used to heat foods that have already been cooked or to melt frozen foods. have.

1 is a perspective view illustrating a microwave oven according to the prior art, FIG. 2 is a cross-sectional view illustrating a microwave oven according to the prior art, and FIG. 3 is a perspective view illustrating an exhaust port and an intake vent inside the microwave oven according to the prior art.

As shown in FIGS. 1 and 2, the microwave oven includes an outer case 10 having a cooking chamber 10a having a front surface opened therein, and an outer panel installed to surround the outside of the outer case 10. 20), a door 30 for opening and closing the open front surface of the cooking chamber 10a, and an operation panel 40 for setting various cooking conditions and for turning on or off the microwave oven.

The tray 50 is placed on the bottom surface of the outer case 10, the food to be cooked is placed, the lower side of the tray 50 is provided with a motor (not shown) for rotating the tray 50.

And, the side of the cooking chamber (10a) of the outer case 10 is composed of a full-length chamber (10b), a magnetron (61) and a high voltage condenser (not shown) for generating a microwave, the magnetron (61) and a high voltage capacitor Apparatuses, such as a high pressure transformer (not shown) and a cooling fan 64 for applying the same, are installed in the electric compartment 10b.

Here, as shown in FIG. 2, the magnetron 61 generating microwaves is mounted on one sidewall of the cooking chamber 10a of the outer case 10 through the waveguide 65. A communication hole (not shown) for communicating the inside of the cooking chamber 10a and the waveguide 65 is formed at one sidewall of the cooking chamber 10a to which the waveguide 65 is attached.

In this way, the food is placed in the tray 50 placed on the bottom surface of the cooking chamber 10a, and then the operation panel 40 is operated to set cooking conditions and operate the microwave oven. Thereafter, microwaves are generated in the magnetron 61 by a high voltage applied from a high voltage transformer (not shown), and the microwaves are guided into the cooking chamber 10a through the waveguide 65 and placed in the tray 50. The food is heated and cooked by the microwave by being irradiated to.

At this time, the tray 50 is rotated at a constant speed by the motor, food is placed in the tray 50 is evenly heated, water vapor generated in the cooking process inside the cooking chamber (10a) is discharged to the outside through the inlet port, Inhale outside air through.

Referring to FIG. 3, 'A' is a cooking chamber inlet hole for sucking air into the cooking chamber through a cooling or blowing fan, and 'B' is a cooking chamber exhaust port through which air sucked through the hole in the cooking chamber is exhausted to the outside. Mark the perforations.

In general, the size of the porous portion of the exhaust port of the 'B' tends to be small, and in the case of a multi-function microwave oven, the duct structure of the exhaust port is formed in the outer case, so that the heat generated while cooking food inside the cooking chamber is cooked. There is a problem that the water vapor is filled inside the cooking chamber due to not easily escape to the outside.

Moisture generated in the door of the cooking chamber prevents the user from confirming the cooking state of the food during cooking, thereby providing inconvenience in use, and provides a cause of failure of parts such as the inside of the electrical cabinet due to the humid air inside the cooking chamber.

Therefore, there is a need for improvement.

SUMMARY OF THE INVENTION The present invention has been made by the necessity as described above, and provides a microwave oven which prevents moisture from filling the door of the cooking chamber by preventing an effective air circulation through the intake port during the cooking process and water vapor generated from the food going to the door. The purpose is.

Moisture prevention device for a microwave oven door according to the present invention comprises: a cooking chamber provided inside the inner case; A door installed at the front of the cooking chamber; An air inlet formed on the side wall of the cooking chamber; And a damper guide device installed at one side of the inlet port to guide air introduced from the inlet port toward the door.

The damper guide device may include: a damper rotatably installed at one side of the inlet port; A power unit installed on the rotation shaft of the damper; And a sensor for sensing a movement angle of the damper by the power unit.

The intake port is preferably installed between the cooking compartment and the electrical equipment compartment so that air introduced through the cooling fan provided at the rear of the electrical equipment compartment can communicate with the cooking compartment.

Preferably, the damper guide device further includes a damper stopper for preventing the damper from operating at a predetermined angle or more.

One side of the cooking chamber is preferably a humidity sensor is installed.

The humidity sensor is preferably installed on the front of the upper plate of the cooking chamber adjacent to the cooking chamber.

Method for preventing moisture of a microwave oven door according to the present invention comprises: (a) a step of starting a cooking of a microwave by a user (S1); (b) determining whether the humidity measured by the humidity sensor is equal to or greater than the reference humidity value (S2); (c) operating the damper guide device (S3); (d) determining whether the humidity measured by the humidity sensor is equal to or less than a reference humidity value (S4); And (e) returning the damper guide device to its original position (S5).

In addition, the step (c) (S3), the power unit to provide power to the damper; Rotating the damper such that air from the intake port is directed toward the door by the power provided from the power unit; And stopping the damper by the sensor and the damper stopper.

Moisture prevention device of the microwave oven door according to the present invention having the configuration as described above can guide the air inlet in the cooking chamber to selectively prevent the moisture from the door by directing the air from the cooling fan of the electrical equipment room toward the door. By preventing the water vapor generated from the cooking from going to the door during cooking, it prevents the door from getting wet, which makes it convenient for the user to check the cooking state of the food during the cooking process.

 Hereinafter, with reference to the accompanying drawings will be described an embodiment of a moisture preventing device and a control method of a microwave oven door 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 below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

Figure 4 is an embodiment of the moisture prevention device of the microwave oven door according to the present invention, a perspective view showing a state before coupling the damper, the motor, the damper detection sensor and the humidity sensor, Figure 5 is a moisture prevention according to the present invention As an embodiment of the device, a left side view is shown before the damper acts as an air guide of the intake port, and FIGS. 6 and 7 are front and top views, respectively, of FIG.

FIG. 8 is a left side view showing a damper acting as an air guide of an intake port as an embodiment of the moisture barrier of the microwave oven door according to the present invention, and FIGS. 9 and 10 are front views of FIG. 8, respectively. 11 is a front view showing before and after assembling the damper and the driving device as an embodiment of the moisture barrier of the microwave oven door according to the present invention.

12 is a flowchart of a method for controlling moisture of a microwave oven door according to the present invention.

4 and 5, the moisture-proofing apparatus of the microwave oven door according to the present invention, the cooking chamber 110a is provided inside the inner case 111, the door 115 is installed on the front of the cooking chamber (110a) and The air inlet 140 is formed on the side wall of the cooking chamber 110a, the humidity sensor 190 is installed at one side of the cooking chamber 110a, and the damper guide device 130 is installed at one side of the inlet 140.

The damper guide device 130 includes a damper 150 for selectively guiding the inlet 140, a power unit 160 for providing power to the damper 150, and a damper 150 by the power unit 160. It includes a detection sensor unit 170 for detecting the operation of the.

Although there are differences depending on the specifications of the microwave oven and the food, the phenomenon that the moisture in the door 115 is usually wet within 2-3 minutes when the output of the food or microwave oven containing a lot of water, otherwise Even if not, the door 115 is moistened in about 4-5 minutes.

In order to prevent this, after cooling the external air coming through the cooling fan 135 installed in the rear of the electrical equipment room 120, the equipment of the electrical equipment room 120, and enters the cooking chamber (110a) through the inlet port 140, This acts as an air guide through the damper 150 to direct the outside air toward the door 115.

Therefore, the inlet 140 is installed between the cooking chamber 110a and the electrical equipment chamber 120 so that air introduced through the cooling fan 135 provided at the rear of the electrical equipment compartment 120 may be communicated to the cooking chamber 110a. It is desirable to be.

In addition, the inner wall of the cooking chamber (110a) is preferably provided with a humidity sensor 190 to measure the opening time of the damper 150, the humidity sensor 190 is preferably installed on the front of the upper plate of the cooking chamber (110a). .

The humidity sensor 190 measures the humidity inside the cooking chamber 110a, and calculates a time for the damper guide device 130 to guide the air according to the measured humidity, and the damper 150 makes a predetermined angle during the time. To maintain.

For example, the user inputs a reference humidity in consideration of cooking food and moisture generated in the door 115. For example, in each case of cooking water, the humidity in the cooking chamber 110a is different, and the time at which moisture is generated in the process of cooking the food may vary. Inferring the amount of water vapor generated by measuring the humidity inside the cooking chamber (110a) for these different conditions, and calculates the time the damper 150 operates as an air guide, after a predetermined time the damper 150 Does not act as an air guide and returns to its original position.

However, in consideration of the environment in which the microwave oven is installed or other conditions such as the weather and the user's taste, the user may set the appropriate line by increasing or decreasing the reference humidity.

Referring to FIG. 11, the damper 150, the power unit 160, and the sensing sensor unit 170 of the damper guide device 130 are described in detail below (see FIG. 9).

Power unit 160 for providing power to the damper 150 is preferably using a motor. In addition, the damper 150 serves to block holes in the outer wall of the inner case 111 of the microwave oven, and is preferably made of a metal material similar to that of the inner case 111 (see FIG. 4).

However, in the case of the damper 150, it is preferable that the damper 150 is made of a material that is resistant to moisture and does not corrode in consideration of many points such as water vapor.

The power unit 160 and the damper 150 are connected in a clip form, and the power unit 160 transmits power to the damper 150 to guide the intake port 140. Damper 150 is coupled in the form of a clip to the shaft protruding at the end of the cylindrical shape of the power unit 160 (see Fig. 5).

In addition, the power unit 160 is a cylindrical disc is rotated by the rotation of the power shaft, the damper 150 coupled to the end of the diameter of the disc can be rotated up to 180 degrees.

In addition, the damper stopper 145 shown in FIG. 6 prevents the damper 150 from rotating beyond this maximum travel angle.

In addition, the sensing sensor unit 170 recognizes the operation of the damper 150 at predetermined time intervals. Therefore, when the predetermined time passes, the damper 150 can be returned to its original position.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the moisture prevention device and control method of the microwave oven door according to an embodiment of the present invention.

5 to 7 show the damper 150 before acting as an air guide of the inlet 140, and FIGS. 8 to 10 show the damper 150 acting as an air guide of the inlet 140. It is shown.

5 to 7, the damper 150 does not block the inlet 140 while the food is not cooked in the cooking chamber 110a, and is attached to the inner wall of the cooking chamber 110a. This is because when the damper 150 is operated only when cooking using the damper 150 to protrude in front of the cooking chamber 110a, it may give a sense of rejection to the consumer.

At this time, since the food in the cooking chamber 110a is not cooked, there is no fear of moisture in the door 115.

8 to 10, during cooking, the damper 150 blocks the front surface of the inlet port 140 at a predetermined angle so that the air 115 entering the inlet port 140 circulates inside the cooking chamber 110a. To (X direction in Fig. 10).

In addition, the damper 150 may prevent water vapor generated by the food from being cooked in the cooking process toward the door 115 and prevent moisture generated in the door 115 ('Y in FIG. 10). 'direction).

Referring to the operation of the sensing sensor unit 170, the damper 150 is attached to the side of the cooking chamber 110a during normal cooking or other waiting conditions, and the sensing sensor unit 170 is in the standby state. .

After the convection cooking or the sensor cooking is finished, the damper 150 is opened at a predetermined angle and the damper 150 is no longer moved by the damper stopper 145. After stopping for a predetermined time, for example, 2-3 minutes in the detection sensor unit 170, after the predetermined time passes and the ventilation inside the cooking chamber 110a is made, the power unit 160 operates to damp the 150 is automatically attached to the side of the cooking chamber (110a).

The damper stopper 145 is installed at the lower portion of the power unit 160, and when the damper 150 opens the intake port 140, the damper 150 is installed to move only to a certain limit and no longer move. . Therefore, the damper 150 allows the external air coming through the cooling fan installed in the rear of the battle room to be directed to the door 115 through the inlet 140.

Referring to FIG. 12, the method of controlling moisture of the microwave oven door 115 may include: (a) initiating cooking of a microwave oven by a user; (b) determining whether the humidity measured by the humidity sensor 190 is greater than or equal to a reference humidity value; (c) operating the damper guide device 130; (d) determining whether the humidity measured by the humidity sensor 190 is equal to or less than a reference humidity value; And (e) characterized in that it comprises the step of returning the damper guide device 130 to its original position.

In addition, the step (c), the power unit 160 to provide power to the damper (150); Rotating the damper (150) to direct air coming from the intake port (140) toward the door (115) by the power provided from the power unit (160); And stopping the damper 150 by the sensing sensor unit 170 and the damper stopper 145.

For example, the humidity sensor measures the humidity inside the cooking chamber, and the reference humidity value is 50%. (a) When the user starts the cooking of the microwave by operating the magnetron (not shown), (b) the humidity sensor 190 compares the measured humidity and the reference humidity value, if the measured humidity value is less than 50% In this case, the damper guide device 130 does not operate.

(c) When the humidity measured by the humidity sensor 190 is 50% or more, the damper guide device 130 operates to provide an operation to the damper 150 and the power input from the power unit 160. By the damper 150 is rotated to direct the air from the inlet 140 toward the door 115, and the damper 150 is stopped by the sensor unit 170 and the stopper 145 It is composed.

Thereafter, (d) it is determined whether the humidity measured by the humidity sensor 190 is 50% or less, and (e) the damper guide device 130 returns to its original position.

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. Will understand. In addition, the moisture prevention device of the microwave oven door and a control method thereof have been described as an example, but this is merely exemplary, and the moisture prevention device of the present invention may be used for other moisture preventing devices other than the moisture preventing device used in the microwave oven. . Therefore, the true technical protection scope of the present invention will be defined by the claims below.

As described above, the moisture prevention device of the microwave oven door and the control method thereof according to the present invention, unlike the conventional invention, by selectively guiding the intake port in the cooking chamber so that the outside air from the cooling fan of the electrical equipment room toward the door when cooking It can prevent the moisture from forming.

In addition, the present invention prevents water vapor from occurring in the door by preventing the water vapor generated from the cooking from going to the door, thereby allowing the user to conveniently check the cooking state of the food during the cooking process.

Claims (8)

A cooking chamber provided inside the inner case; A door installed at the front of the cooking chamber; An air inlet formed on the side wall of the cooking chamber; And And a damper guide device installed at one side of the inlet port to guide the air from the inlet port toward the door. The method of claim 1, wherein the damper guide device, A damper rotatably installed at one side of the inlet; A power unit installed on the rotation shaft of the damper; And And a sensor for detecting a movement angle of the damper by the power unit. The method according to claim 1 or 2, wherein the intake port, The moisture preventing device of the microwave oven door, characterized in that installed between the cooking chamber and the electrical compartment so that the air coming through the cooling fan provided in the rear of the electrical compartment to the cooking compartment. The method of claim 3, The damper guide device further comprises a damper stopper for preventing the damper from operating above a predetermined angle. The method of claim 1, Humidity prevention device of the microwave oven door, characterized in that the humidity sensor is installed on one side of the cooking chamber. The method of claim 5, The humidity sensor is a moisture prevention device of the microwave door, characterized in that installed on the front of the upper plate of the cooking chamber adjacent to the cooking chamber. (a) the user initiating cooking of the microwave; (b) determining whether the humidity measured by the humidity sensor is equal to or greater than the reference humidity value; (c) operating the damper guide device; (d) determining whether the humidity measured by the humidity sensor is equal to or less than a reference humidity value; And (e) the damper guide device comprises the step of returning to the home position moisture control method of the microwave door. The method of claim 7, wherein step (c) is The power unit providing power to the damper; Rotating the damper so that the air coming from the intake port is directed toward the door by the power provided from the power unit; And And damping the damper by a sensor and a damper stopper.

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