KR100816734B1 - Combination microwave range of humidifier and convection type and control method thereof - Google Patents

Abstract

The present invention relates to a humidifier combined convection microwave oven and a control method of such a microwave oven, and more particularly, a sliding door is provided in a door of a convection microwave oven, and a storage container in which water is stored in a cooking chamber, and then the water is heated by a magnetron. It heats, and by opening the auxiliary door to discharge moisture inside the cooking chamber to the outside of the microwave oven through the convection pan, characterized in that to perform a humidification function in addition to the microwave function.

Convection Microwave, Auxiliary Door, Humidifier, Storage Container, Magnetron, Humidity Sensor

Description

Humidifier combined convection microwave oven and control method of such microwave oven {COMBINATION MICROWAVE RANGE OF HUMIDIFIER AND CONVECTION TYPE AND CONTROL METHOD THEREOF}

1 is a view showing a schematic configuration of a conventional convection microwave oven.

2 is a view showing a schematic internal configuration of the humidifier combined convection microwave oven according to the present invention.

3 is a view showing a state in which the door of the humidifier combined convection microwave oven according to the present invention opened.

Figure 4 is an embodiment of the auxiliary door of the humidifier combined convection microwave oven according to the present invention.

5 is a view showing the operation of the humidifier combined microwave oven according to the present invention.

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

10: cooking case 13: damper

14: storage container 15: humidity sensor

20: part case 23: control unit

24: humidification switch 30: convection case

40; Door 41: Auxiliary Door

42: fierce 43: blocking plate

44 motor 45 opening hole

46: mounting groove

The present invention relates to a microwave oven, and more particularly, it is possible not only to cook food in a conventional convection microwave oven, but also to insert a storage container with water stored in a cooking chamber, heat water with a magnetron, and then use a convection pan. It relates to a humidifier combined convection microwave oven and a method for controlling such a microwave oven, characterized in that by using the humidifier to release the moisture in the cooking chamber to the outside.

In general, the microwave oven, unlike conventional cooking apparatus of the external heating method using heat conduction and heat radiation, applies a high voltage to the microwave oscillation tube called magnetron to oscillate the microwave of 2450MHz, and the oscillated microwave is introduced into the cooking chamber of the microwave oven. By spinning and repeatedly converting the molecular arrangement of the moisture contained in the food, it is a mechanism for cooking food by generating frictional heat between the molecules.

This microwave oven has a single function microwave that cooks food using only 2450MHz microwave (fired from a magnetron), and a grill having a function of grill by having a heater above or below the cooking chamber in addition to the microwave. In addition to microwave ovens and microwaves, there are multifunctional microwave ovens such as a convection type microwave oven having an oven function for convection of hot air by providing a heater and a convection fan at the rear of the cooking chamber.

1 is a view showing a schematic configuration of a conventional convection microwave oven.

As shown, the convection microwave oven can be broadly divided into a cooking case 100, a component case 200, and a convection case 300.

A cooking chamber 110 is formed inside the cooking case 100, and the cooking chamber 110 is provided with a turntable to rotate food.

The component case 200 is provided on one side of the cooking case 100, and various electrical components such as a magnetron 210 and a high-pressure transformer 220 for oscillation of the microwave are installed inside the component case 200. do.

In addition, a cooling fan 230 for cooling the electric component and a cooling motor 240 for driving the cooling fan 230 are installed in the component case 200.

The convection case 300 is provided at the rear of the cooking case 100, a convection heater 310 for generating a heater heat in the convection case 300 is installed close to the cooking case 100, the outside of the heater row Heater cover 320 for preventing leakage wraps the convection heater (310).

In addition, a convection fan 330 is provided in the heater cover 320 to allow the heater heat to flow into the cooking chamber 110 in the cavitation case 300, and a convection motor 340 for driving the convection fan 330. ) Is installed outside the heater cover 320.

Therefore, when the inside of the case 200 is heated, when the cooling fan 230 is driven by the cooling motor 240, the outside air flows through the part through hole 250 formed in the rear of the case 200 It cools the internal heat.

On the other hand, since the convection motor 340 is installed close to the convection heater 310, a separate cooling fan 350 is installed in the convection motor 340 to cool the convection motor 340.

Such a convection microwave oven only allows the cooking of food. Recently, the microwave oven has been developed for a product that can be used for other purposes.

Accordingly, the present invention is intended to use a microwave oven for a variety of uses, the present invention aims to enable the convection microwave oven to also function as a humidifier.

The present invention for achieving the above object is a cooking chamber is formed inside the cooking case having an exhaust port for air flow and a damper for opening and closing the exhaust port; A door hinged to the cooking case to open and close the cooking case; A storage container seated in the cooking chamber and storing water; A part case provided on one side of the cooking case and installed with electrical components such as a magnetron to convert water stored in the storage container into water vapor; A convection case provided on the other side of the cooking case and having a convection heater and a convection fan embedded therein to discharge heated air to the cooking chamber; A controller for controlling the damper, the magnetron, the convection heater, the convection fan, and the like; And it provides a humidifier combined convection microwave oven comprising a humidification switch to send a signal to the control unit to perform a humidification function.

In the present invention, the storage container is characterized in that the close contact with the inner surface of the cooking case so that moisture does not fall to the bottom of the cooking chamber.

In the present invention, the cooking chamber is characterized in that the humidity sensor for informing the control unit the relative humidity of the inside of the cooking chamber.

In the present invention, the door is characterized in that the auxiliary door for discharging the humidified air in the closed state of the cooking case is provided.

At this time, the auxiliary door is inserted into the mounting groove of the door or the blocking plate is provided with the teeth on the side to close the opening hole extending from the mounting groove of the door; And a motor embedded in the door and driven in engagement with the teeth, wherein the motor is driven according to a signal from the controller.

On the other hand, the present invention comprises the steps of checking whether the humidification switch is on or off; An exhaust port is blocked by driving a damper when the humidification switch is on, and is terminated when the humidification switch is off; Heating the water inside the cooking chamber by driving the magnetron after the exhaust port is blocked; Measuring, by a humidity sensor mounted in the cooking chamber, whether a relative humidity in the cooking chamber is equal to or greater than a first predetermined value; Stopping driving of the magnetron when the relative humidity is greater than or equal to a first predetermined value; After the magnetron is stopped, opening the auxiliary door mounted on the door and driving the convection heater and the convection fan to discharge moisture to the outside; Determining whether the relative humidity in the cooking chamber is lower than a second predetermined value by measuring the humidity sensor while the moisture is discharged to the outside; Closing the auxiliary door and stopping driving of the convection heater and the convection fan when the relative humidity is lower than a second predetermined value; When the auxiliary door is closed and the convection heater and the convection fan are stopped, the method provides a humidifier combined convection microwave control method comprising the step of moving to the step of driving the magnetron.

In the present invention, when the relative humidity in the cooking chamber is lower than the first predetermined value by the measurement of the humidity sensor mounted inside the cooking chamber after driving the magnetron, by measuring whether the magnetron has been driven for a predetermined time, If elapsed, characterized in that it further comprises the step of ending.

The method may further include generating a warning sound by a speaker when the magnetron is driven for a predetermined time.

In the present invention, the first predetermined value is characterized in that the relative humidity of 90.

In the present invention, the second predetermined value is characterized in that the relative humidity of 80.

In the present invention, the predetermined time is characterized in that 10 minutes.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment for a humidifier combined 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.

Figure 2 is a view showing a schematic internal configuration of the humidifier combined convection microwave oven according to the present invention, Figure 3 is a view showing an open state of the humidifier combined convection microwave oven according to the present invention, Figure 4 is a present invention According to an embodiment of the auxiliary door of the combined humidifier microwave oven according to Figure 5 is a view showing the operation of the microwave oven combined humidifier according to the present invention.

As shown, the microwave oven according to the present embodiment is divided into a cooking case 10, a component case 20, and a convection case 30.

Here, the cooking case 10 is the cooking chamber 11 is formed inside, the front door 40 is provided to put food into the cooking chamber 11 to cook.

The component case 20 is provided on one side of the cooking case 10 and the electronic parts such as the magnetron 21 and the high-pressure transformer 22 are installed, and the front of the component case 20 operates the electric range. Various buttons (not shown) are mounted.

The rear part of the cooking case 10 is equipped with a heater cover 31, the convection heater 32 and the convection fan 33 is built in the heater cover 31 to discharge the heated air to the cooking chamber (11) Done.

At this time, the heater cover 31 is provided with a heat insulating function to prevent the heated air to move to the rear of the heater cover 31.

A convection motor 34 is mounted on the outer surface of the heater cover 31, and the convection motor 34 drives the convection fan 33.

On the other hand, the cooking case 10 has a front surface is open, the cooking chamber is formed therein, one or more exhaust port 12 for the air flow and the damper 13 for opening and closing the exhaust port 12 is provided.

And, the door 40 is hinged to the cooking case 10 to open and close the front of the cooking case 10.

A storage container 14 is seated in the cooking chamber 11, and water is stored in the storage container 14, and water is added to or extracted from the interior of the cooking chamber 11 through the door 40.

At this time, the storage container 14 has a shape that is in close contact with the inner surface of the cooking case 10 so that moisture does not fall to the bottom of the cooking chamber (11).

The magnetron 21 is provided on one side of the component case 20 to convert water stored in the storage container 14 into water vapor.

The convection heater 31 and the convection fan 33 discharge the heated air to the cooking chamber 11.

The controller 23 embedded in the component case 20 controls the damper 13, the magnetron 21, the convection heater 31, the convection fan 33, and the like.

The front of the component case 20 is provided with a humidification switch 24 for sending a signal to the control unit 23 so that the microwave oven according to the present invention performs a humidification function.

The cooking chamber 11 is provided with a humidity sensor 15. The humidity sensor 15 measures the relative humidity inside the cooking chamber 11 and informs the controller 23.

The door 40 may include an auxiliary door 41 for discharging humidified air in a state in which the cooking chamber 11 is closed.

The auxiliary door 41 has a blocking plate 43 having a plurality of teeth 42 on the side and a motor 44 engaged with the teeth 42 and embedded in the door 40.

In this case, the door 40 has an opening hole 45 penetrating its own surface and a mounting groove 46 extending to the opening hole 45 and guiding the blocking plate 43 while the blocking plate 43 is inserted. .

Therefore, by driving the motor 44, the blocking plate 43 is inserted into the mounting groove 46 while closing the opening hole 45 while opening and closing the opening hole 45.

Looking at the control method of the humidifier combined convection microwave oven having such a configuration with reference to the accompanying flow chart as follows.

First, the user puts the storage container 14 containing the water in the cooking chamber 11, closes the door 40, and then press the humidification switch (24).

Then, the controller 23 checks whether the humidification switch 24 is on / off (s10).

At this time, when the humidification switch 24 is off, the humidification driving ends. When the humidification switch 24 is on, the control unit 23 sends a signal to the damper 13 to drive the damper 13 to drive the cooking case ( Block the exhaust port 12 of 10) (s20).

When the exhaust port 12 is blocked, the controller 23 drives the magnetron 21 to heat the water stored in the storage container 14 (s30).

Due to the driving of the magnetron 21 and the closing of the exhaust port 12, the relative humidity of the sealed cooking chamber 11 is rapidly increased, and the humidity sensor 15 mounted inside the cooking chamber 11 is the cooking chamber 11. The internal relative humidity is measured and transmitted to the controller 23.

At this time, if the measured relative humidity is greater than or equal to the first predetermined value (s40), the controller 23 stops driving the magnetron 21 (s50), and the first predetermined value is preferably 90 relative humidity.

This is because, when the relative humidity is 90, sufficient water vapor exists in the sealed cooking chamber 11, so that a sufficient amount of water vapor may be discharged outside the microwave oven, that is, indoors.

On the other hand, the relative humidity is 90 or more, the driving of the magnetron 21 is stopped (s50), and then the control unit 23 drives the auxiliary door 41 mounted on the door 40 to open the opening hole 45 Be sure to

At the same time, the controller 23 drives the convection heater 31 and the convection fan 33 so that hot air is discharged to the cooking chamber 11 (S60).

Thus, the moisture inside the cooking chamber 11 is discharged to the outside of the microwave oven through the opening hole 45 of the door 40.

The external discharge of the moisture is continued until the relative humidity inside the cooking chamber 11 is lower than the second predetermined value, and the humidity sensor 15 continuously measures the relative humidity inside the cooking chamber 11 and removes the relative humidity. If less than 2 predetermined value sends a signal to the control unit 23 (s70).

Then, the controller 23 determines that the relative humidity inside the cooking chamber 11 does not reach the second predetermined value, drives the auxiliary door 41 to close the opening hole 45, and the convection heater 31 and the convection. The driving of the fan 33 is stopped (s80).

At this time, the second predetermined value is set to 80 relative humidity.

This is because, when the relative humidity inside the cooking chamber 11 is lower than 80, a sufficient amount of water vapor cannot be discharged into the room, and the humidification effect is lowered.

After the auxiliary door 41 is closed and the convection heater 31 and the convection fan 33 are stopped (s80), the magnetron 21 is moved to a step (s30) to repeat the above process. do.

On the other hand, after the driving step (s30) of the magnetron 21, when the relative humidity in the cooking chamber 11 is lower than the first predetermined value by the measurement of the humidity sensor 15 mounted in the cooking chamber 11, It is measured whether the magnetron 21 has been driven during the time.

The driving time measurement may be performed by the control unit 23 or by a separate measuring sensor. When the driving time passes a predetermined time, the control unit 23 terminates the humidification function (S90).

At this time, the humidification function may be immediately terminated after a predetermined time elapses, but a step (s100) of generating a warning sound by the speaker 25 may be added. Such a speaker 25 generates a warning sound in an existing microwave oven. Can also be used as a part.

That is, s90 and s100 are for preventing the excessive driving of the magnetron 21 because the water stored in the storage container 14 is insufficient when the relative humidity is not high in the cooking chamber 11.

To this end, the predetermined time is set to 10 minutes.

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.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

As described above, the humidifier combined convection microwave oven and the method for controlling such a microwave oven according to the present invention can normally prepare food using a convection microwave oven.

Then, when the user inserts the storage container with water stored inside the cooking chamber and presses the humidification switch, the water is heated by the magnetron and the convection fan is discharged to the outside of the microwave, so that the microwave can be used as a humidifier. have.

Claims (11)

A cooking case having a cooking chamber formed therein and having an exhaust port for air flow and a damper for opening and closing the exhaust port; A door hinged to the cooking case to open and close the cooking case; A storage container seated in the cooking chamber and storing water; A part case provided on one side of the cooking case and installed with electrical components such as a magnetron to convert water stored in the storage container into water vapor; A convection case provided on the other side of the cooking case and having a convection heater and a convection fan embedded therein to discharge heated air to the cooking chamber; A controller for controlling the damper, the magnetron, the convection heater, the convection fan, and the like; And It includes a humidification switch to send a signal to the control unit to perform a humidification function, The storage container is a humidifier combined convection microwave oven, characterized in that the close contact with the inner surface of the cooking case so that moisture does not fall to the bottom of the cooking chamber. delete The method of claim 1, The cooking chamber is a humidifier combined convection microwave oven, characterized in that the humidity sensor for notifying the control unit the relative humidity inside the cooking chamber. The method of claim 1, The door is equipped with a humidifier combined convection microwave oven, characterized in that the auxiliary door for discharging the humidified air in a closed state of the cooking case. The method of claim 4, wherein The auxiliary door may include a blocking plate inserted into a mounting groove of the door or provided with teeth at a side surface to close the opening hole extending from the mounting groove of the door; And A motor embedded in the door and driven in engagement with the teeth, Humidifier combined convection microwave oven, characterized in that the motor is driven according to the signal of the controller. Checking whether the humidification switch is on or off; An exhaust port is blocked by driving a damper when the humidification switch is on, and ends when the humidification switch is off; Heating the water inside the cooking chamber by driving the magnetron after the exhaust port is blocked; Measuring, by a humidity sensor mounted in the cooking chamber, whether a relative humidity in the cooking chamber is equal to or greater than a first predetermined value; Stopping driving of the magnetron when the relative humidity is greater than or equal to a first predetermined value; After the magnetron is stopped, opening the auxiliary door mounted on the door and driving the convection heater and the convection fan to discharge moisture to the outside; Determining whether the relative humidity in the cooking chamber is lower than a second predetermined value by measuring the humidity sensor while the moisture is discharged to the outside; Closing the auxiliary door and stopping driving of the convection heater and the convection fan when the relative humidity is lower than a second predetermined value; And when the auxiliary door is closed and the convection heater and the convection fan are stopped, moving to the step of driving the magnetron. The method of claim 6, The method further comprises the step of terminating when the relative humidity in the cooking chamber is lower than the first predetermined value by the measurement of the humidity sensor mounted inside the cooking chamber for a predetermined time after the driving of the magnetron. Convection microwave control method. The method of claim 7, wherein And a warning sound is generated by a speaker when the magnetron is driven for a predetermined time. The method according to claim 6 or 7, And said first predetermined value is a relative humidity of 90. The method of claim 6, And said second predetermined value is a relative humidity of 80. The method according to claim 7 or 8, Humidifier combined convection microwave control method, characterized in that the predetermined time is 10 minutes.

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