KR100680996B1 - System perceiving humidity of microwave oven and method thereof - Google Patents

Abstract

The present invention relates to a humidity sensing system and method of a microwave oven, wherein a microwave oven includes a cooking chamber for cooking food, and includes a tray in which the food is placed in the cooking chamber, and for detecting humidity at a predetermined place in the cooking chamber. And a control unit for recognizing an average value of the values detected from the plurality of humidity sensors and the plurality of humidity sensors as the humidity of the cooking chamber. Thus, by forming at least one humidity sensor in the cooking chamber to sense the humidity in the cooking chamber, even if any one of the humidity sensor malfunction or malfunction due to foreign matter there is an advantage that it is possible to maintain the proper humidity in the cooking chamber.

Humidity, microwave

Description

Humidity Detection System and Method for Microwave Oven {SYSTEM PERCEIVING HUMIDITY OF MICROWAVE OVEN AND METHOD THEREOF}

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

2 is an enlarged perspective view of the tray of FIG. 1, and

3 is a flowchart illustrating how the microwave oven of FIG. 1 is executed.

<Description of Symbols for Main Parts of Drawings>

100: microwave oven 110: cooking chamber

120: heater 130: magnetron

132 wave guide 140 humidity control

150: tray 152: tray motor

154: humidity sensor 160: control unit

The present invention relates to a microwave oven, and more particularly, to a humidity detection system and method for a microwave oven capable of sensing the humidity of the microwave oven.

In general, the microwave oven is configured such that the high frequency radiated from the magnetron directly heats the food placed inside the cooking chamber so that the food is cooked.

In addition, a microwave oven having a grill oven function for cooking various foods has been developed, and various dishes can be made using high-frequency energy and heat of a heater irradiated from the magnetron.

Such a conventional microwave oven is provided with a device for maintaining the proper humidity of the food by sensing the humidity of the cooking chamber, which is a space for cooking food inside the microwave.

More specifically, the cooking chamber is provided with a tray on which food is placed and a tray motor for rotating the tray, and a wave guide for dispersing the high frequency generated from the magnetron generating the high frequency and the magnetron, and cooling the temperature in the cooking chamber or providing air. Cooling fan is provided.

In addition, a heater is provided on the upper wall of the cooking chamber so as to cook variously according to the type of food in addition to the radio wave dispersion method using the high frequency of the magnetron, and a humidity sensor for sensing the humidity in the cooking chamber is provided on one side wall of the cooking chamber.

Therefore, the high frequency oscillates from the magnetron, the tray motor is rotated by the tray motor to cook the food to be evenly incident to the food, and the heater is selectively operated according to the type of food to cook the food conveniently and quickly. To help. At this time, the humidity sensor is responsible for sensing the humidity in the cooking chamber to properly maintain the humidity in the cooking chamber.

However, according to the prior art, the humidity sensor for detecting the humidity in the cooking chamber is mounted only on one side wall of the cooking chamber, which acts as a barrier to detecting humidity by foreign substances such as smoke or oil, thereby preventing the humidity from being properly sensed. This occurred.

Accordingly, an object of the present invention is to solve the above problems, by forming at least one humidity sensor in the tray inside the microwave oven to detect the humidity in the cooking chamber, due to any failure or foreign matter of the humidity sensor The present invention provides a humidity detection system and method for a microwave oven, which can prevent malfunction of a microwave oven and maintain an appropriate humidity in a cooking chamber by checking the average value of the humidity values detected by the humidity sensors as the humidity in the cooking chamber. .

Technical means of the present invention for achieving the above object is a cooking chamber for cooking food, the humidity sensing system of the microwave oven having a tray in which the food is placed in the cooking chamber, in a predetermined place in the cooking chamber And a plurality of humidity sensors for sensing humidity, and a control unit for recognizing an average value of the values detected from the plurality of humidity sensors as the humidity of the cooking compartment.

The plurality of humidity sensors, characterized in that formed radially on the outer periphery of the tray.

A humidity sensing method of a microwave oven, in which a cooking chamber for cooking food is provided and a tray in which the food is placed in the cooking chamber, the user introducing the food into the cooking chamber and selecting an appropriate cooking mode; The tray on which the food is placed is driven and the microwave is irradiated, the humidity generated when the food is heated by the microwaves is detected by a plurality of humidity sensors, and an average value of the values read from the plurality of humidity sensors is calculated. Comparing with a reference value and

If the average value of the humidity is equal to or less than the reference value, the humidity in the cooking chamber is corrected, if the reference value is higher than the additional temperature is characterized in that it comprises a step of maintaining the proper humidity of the food.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the humidity detection system of the microwave oven 100 according to the present invention will be described in detail.

1 is a cross-sectional view illustrating a configuration of a microwave oven 100 according to an embodiment of the present invention, and FIG. 2 is an enlarged perspective view of the tray 150 of FIG. 1.

As shown in FIG. 1, the microwave oven 100 according to the present invention includes a cooking chamber 110, a heater 120, a magnetron 130, a tray motor 152, a tray 150, and a humidity sensor 154. , Humidity controller 140, the control unit 160 is made.

In the cooking chamber 110, a tray 150 on which food is placed, a tray motor 152 for rotating the tray 150, and a plurality of humidity sensors formed in the tray 150 to detect humidity in the cooking chamber 110. 154, a humidity controller 140 for controlling the humidity inside the cooking chamber 110 identified by the plurality of humidity sensors 154, and in addition to the radio wave dispersion method using the high frequency of the magnetron 130, The heater 120 is provided on the upper wall of the cooking chamber 110 to cook variously.

In addition, the electronic device 100 has a magnetron 130 for generating a high frequency and a waveguide 132 for dispersing the high frequency generated from the magnetron 130, and a plurality of humidity sensors mounted in the cooking chamber 110. The controller 160 is configured to recognize the average value of the measured humidity values due to the humidity in the cooking chamber 110.

The tray 150 is formed in a circular shape, and is formed at the bottom of the cooking chamber 110 so that the food is drawn in and placed therein. When the microwave oven 100 operates, the tray motor 152 mounted on the bottom of the cooking chamber 110 is provided. It rotates by so that the high frequency into the cooking chamber 110 is evenly incident to the food.

The magnetron 130 generates a high frequency having a high frequency of about 2,450 MHz, and the generated high frequency is distributed by the wave guide 132 to be incident on the food in the cooking chamber 110 to allow the food to be cooked.

In addition, in addition to the electric wave dispersion method using the high frequency of the magnetron 130, the heater 120 may be used to cook variously according to the type of food.

Humidity sensor 154, at least one or more is formed in the cooking chamber 110 to sense the humidity in the cooking chamber 110, at least one tray 150 is preferably formed radially on the outer periphery of the tray 150. .

The number of the humidity sensor 154 may be adjusted according to the capacity and function of the microwave oven 100.

The control unit 160 receives the respective humidity values measured by the humidity sensor 154 installed along the outer periphery of the tray 150 by operating the microwave oven 100 and calculates the average value to calculate the average value to the cooking chamber 110. Check with the humidity inside.

The humidity controller 140 measures the average humidity below the reference humidity value in comparison with the reference humidity value according to the mode in which the determined humidity is set by the user putting the food into the cooking compartment 110 and operating with an external keypad. In order to supply an appropriate humidity in 110.

In addition, when the confirmed humidity is measured as the average humidity more than the reference humidity value of the mode set by the user, the temperature in the cooking chamber 110 is increased by the operation of the magnetron 130 to maintain the appropriate humidity.

Next, the humidity sensing method of the microwave oven 100 according to the embodiment of the present invention having the above configuration will be described.

The user inserts food to be cooked in the cooking chamber 110 and sets cooking selection and cooking time using a keypad (not shown) provided outside the microwave oven 100.

When the microwave oven 100 is operated according to the set matters, the control command and the control progress state are displayed on the external display screen by the controller 160, while the tray 150 is driven to rotate the food while the magnetron 130 is rotated. The food is cooked by injecting evenly the high frequency injected from the.

During operation of the microwave oven 100, the plurality of humidity sensors 154 in the tray 150 continuously detect the humidity in the cooking chamber 110 to calculate an average value of each measured humidity value, and calculate the average value as the cooking chamber 110. Recognize by the humidity inside.

When the perceived humidity value has a value lower than the reference humidity value of the cooking mode set by the user, the humidity is corrected by the humidity controller 140. When a value larger than the reference humidity value is measured, the action of the magnetron 130 is performed. As a result, the humidity in the cooking chamber 110 is properly maintained while the temperature in the cooking chamber 110 is increased.

While specific embodiments of the present invention have been described and illustrated above, it will be apparent that the present invention may be embodied in various modifications by those skilled in the art. Such modified embodiments should not be understood individually from the technical spirit or the prospect of the present invention, but should fall within the claims appended to the present invention.

Therefore, in the present invention, by forming at least one humidity sensor on the tray of the microwave oven to sense the humidity in the cooking chamber, there is an advantage that can be prevented from malfunctioning or malfunction of any one of the humidity sensor.

Claims (3)

In the cooking chamber for cooking food, the humidity sensing system of the microwave oven having a tray in which the food is placed in the cooking chamber, A plurality of humidity sensors for sensing humidity in a predetermined place in the cooking chamber; And a control unit for recognizing the average value of the values sensed by the plurality of humidity sensors as the humidity of the cooking chamber. The method of claim 1, wherein the plurality of humidity sensors, Humidity detection system of the microwave oven, characterized in that formed radially on the outer periphery of the tray. In the cooking chamber for cooking the food, the humidity sensing method of the microwave oven having a tray in which the food is placed in the cooking chamber, A user introducing food into the cooking chamber and selecting an appropriate cooking mode; Driving the tray on which the food is placed and irradiating microwaves; Sensing humidity generated by heating food due to the microwaves with a plurality of humidity sensors; Calculating an average value of the values read from the plurality of humidity sensors and comparing the average value with a reference value; And And adjusting the humidity in the cooking chamber when the average value of the humidity is equal to or lower than the reference value, and correcting an additional temperature when the average value is higher than the reference value to maintain proper humidity of the food.

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