KR20000013528A - Microwave oven and control method thereof - Google Patents

Abstract

PURPOSE: A microwave oven is provided to be able to input consumer's choice only in the order of preference among the automatic cooking items. CONSTITUTION: The microwave oven comprises; a cooking item change mode key to input a cooking item change signal by the order of consumer preference; a control device(220), to change the automatic cooking item and the cooking order after a cooking item change mode signal is inputted by the manipulation of the cooking item change mode key, naming the consumer desired automatic cooking item by the order of the automatic cooking item; a memory device to store the automatic cooking item and the order changed by the control signal of the control device; a display device to display the order of the automatic cooking by the control signal of the control device.

Description

Microwave and Control Method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven for heating and cooking food by high frequency, and more particularly, to a microwave oven and a method of controlling the same, in which the consumer can input only the necessary items in the desired order.

In general, as illustrated in FIG. 1, the microwave oven is partitioned and formed on a side (left side) of the main body 10 with a cooking chamber 20 for arranging and heating food. On the other side (right side), the machine room 30 is formed in a predetermined area so as to accommodate the electrical component assembly, and the bottom of the cooking chamber 20 supports the food and rotates the food to be heated and cooked uniformly. 40) is detachably installed.

One side of the machine room 30 is provided with a high voltage transformer (50, hereinafter referred to as a high voltage transformer) generating power by applying power, and the high voltage transformer above the inside of the machine room 30. The magnetron 60 is installed to generate a high frequency by applying a high pressure from the 50, and a waveguide for guiding the high frequency generated from the magnetron 60 into the cooking chamber 20 at the upper left portion of the magnetron 60. 70 is provided.

In addition, one side of the machine room 30 forcibly introduces external air into the machine room 30 through a plurality of suction ports 81 to cool the high temperature heat generated by each electric component in the machine room 30 when the stove is operated. Cooling fan 80 is installed, one side wall of the cooking chamber 20 and the machine room 30, a part of the external air introduced into the machine room 30 through the suction port 81 flows into the cooking chamber 20. A plurality of inlets 11 are formed to be formed, and an inner duct for guiding air introduced by the driving of the cooling fan 80 into the cooking chamber 20 on the side wall of the machine room 30 in which the inlets 11 are formed. 90 is provided.

In addition, on one side of the side wall opposite to the cooking compartment 20 in which the plurality of inlets 11 are formed, the air introduced into the cooking compartment 20 is circulated to exhaust the heat and smell generated during heating and cooking of food to the outside. An outlet 12 is formed.

An outer duct 100 is installed at an upper end of the front surface of the machine room 30 so that the air circulated into the machine room 30 and exhausted to the outside of the main body 10 is installed. The control box 110 is provided with a plurality of operation keys for selecting the operation, stop or various cooking functions of the microwave oven, and the door 120 that opens and closes in an opening and closing manner is installed on the front of the cooking chamber 20. The outer panel 130 is formed at both sides of the main body 10 to be bent at both sides to form an exterior and to cover the interior.

In the microwave oven configured as described above, the user places food on the turntable 40 in the cooking chamber 20 and then selects a desired automatic cooking item by operating a key provided on the control box 110 and then presses a start key. In addition, while the tentable 40 rotates in one direction, the magnetron 60 applied with the high voltage from the high voltage transformer 50 is driven to generate a high frequency of 2450 MHz.

The high frequency generated by the magnetron 60 is guided into the cooking chamber 20 through the waveguide 70 and reflected by the metal wall, which is a structure of the cooking chamber 20, to be applied to food or directly to food. Cook.

On the other hand, as the cooling fan 80 rotates during the operation of the microwave oven, external air is forced into the machine room 30 through the suction port 81, and thus each electric component in the machine room 30 (eg, magnetron) After cooling the high temperature heat generated from the outside through the duct 100 to the outside and at the same time a portion of the outside air introduced into the machine room 30 is guided by the inner duct 90 through the inlet 11 The heat and odor generated during heating and cooking of food while being introduced and circulated inside the cooking chamber 20 are exhausted to the outside through the outlet 12 to cool the machine heat of the machine room 30 and the cooking heat of the cooking chamber 20. .

By the way, in the conventional microwave oven, the auto-cooking item and the order determined when the product is first released can not be changed and the consumer can use it as it is. Since it is fixed according to the general frequency of use, there is a problem that there is a difference from the actual frequency of use of the consumer.

Accordingly, the present invention has been made to solve the above-described problems, the consumer can select only the items needed among the automatic cooking items (ITEM) and can change the selection order as desired according to the frequency of use of the consumer, the changed automatic cooking items It is an object of the present invention to provide a microwave oven and a method of controlling the same by storing the and order in a memory means so that the auto-cooking item and order can be maintained by the consumer even when the power is turned off.

In order to achieve the above object, a microwave oven according to the present invention includes a cooking change mode key for inputting a cooking change mode signal so that a consumer selects only the necessary items among the automatic cooking items of the microwave, and the cooking change mode key. Control means for changing the items and the order of automatic cooking by assigning the desired automatic cooking items according to the automatic cooking order when the cooking change mode signal is input according to the operation, and the item of automatic cooking changed according to the control signal of the control means And memory means for storing the order.

In addition, the method for controlling a microwave according to the present invention includes a signal input judging step of judging whether a cooking change mode signal is input according to an operation of the cooking change mode key, and a cooking change mode signal being input at the signal input judging step. A sequence display step of displaying an automatic cooking order when determined, an automatic cooking change step of changing an item and an order of automatic cooking by assigning an automatic cooking item desired by a consumer to the automatic cooking order displayed in the order display step, and the automatic cooking And a memory step of storing the items and the order of the automatic cooking changed in the changing step in the memory means.

1 is an exploded perspective view schematically showing a general microwave oven,

2 is a control block diagram of a microwave oven according to an embodiment of the present invention;

Figure 3 is a flow chart showing the operation sequence for changing the automatic cooking items and the order of the microwave oven in accordance with the present invention.

<Explanation of symbols for main parts of the drawings>

50: high voltage transformer 60: magnetron

110: control box 210: key input means

220: control means 230: memory means

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Since the microwave oven according to the present invention is the same as the conventional configuration shown in FIG. 1, redundant description is omitted.

As shown in FIG. 2, the power supply means 200 receives a power supply voltage of a commercial AC power supplied from an AC power supply (not shown), converts the power supply voltage into a predetermined DC voltage required for driving the microwave, and outputs the key input means. On the control box 110 of the main body 10 to select various cooking functions (cooking time setting, cooking menu selection, output of the microwave oven, start / stop of cooking operation, etc.) and automatic cooking items desired by the user. In addition to having a plurality of keys in the auto-cooking item (ITEM) is provided with a cooking change mode key to select only the items required by the consumer in the desired order.

In addition, the control unit 220 initializes the microwave oven by receiving the DC voltage output from the power supply unit 200 and simultaneously operates the microwave oven according to the key signal input by the key input unit 210. As a microcomputer for controlling the control unit 220, the control unit 220 selects only the items required by the consumer among the automatic cooking items (ITEM) according to the cooking change mode signal inputted from the key input unit 210, and the order of selection as the consumer desires. Various cooking items of automatic cooking are given to the automatic cooking order to change.

The memory means 230 is an EEPROM which receives the control signal output from the control means 220 and stores the auto-cooking item and the order changed by the user by the key input means 210, and the magnetron driving means 240. The high frequency control signal output from the control means 220 controls the high frequency oscillation output of the magnetron 60.

In addition, the display means 250 receives the control signal output from the control means 220 to display the cooking time or cooking menu input by the user by the key input means 210, as well as automatic cooking items And order.

Hereinafter, the effects of the microwave oven and the control method configured as described above will be described.

3 is a flowchart illustrating an operation sequence for changing the automatic cooking items and the order of the microwave oven according to the present invention, in which S denotes a step.

First, when power is supplied to the microwave oven, the power supply means 200 converts an AC voltage supplied from an AC power supply terminal (not shown) into a predetermined DC voltage required for driving the microwave oven, and controls each driving circuit and control unit 220. Output to

Therefore, in step S1, the DC voltage of 5V output from the power supply means 200 is input from the control means 220 to initialize the microwave oven.

At this time, when the cooking change mode key provided in the key input means 210 is selected so that the consumer selects only the necessary items from the automatic cooking item ITEM of the microwave oven and inputs them in the desired order, cooking is performed from the key input means 210. The change mode signal is input to the control means 220.

Accordingly, in step S2, the control means 220 determines whether the cooking change mode signal is input, and if the cooking change mode signal is not input (NO), the control means 220 or less steps until the cooking change mode signal is input. Repeat the operation.

As a result of the discrimination in step S2, when the cooking change mode signal is input (YES), the flow advances to step S3, and the control means 220 performs the sequence of automatic cooking (1, 2, 3, 4 ....) Is displayed through the display means 250, and it is determined in step S4 whether it is time input.

As a result of the discrimination in step S4, if it is not time input (NO), the process proceeds to step S5, whereby the consumer displays the order of automatic cooking displayed on the display means 250 (1, 2, 3, 4 ...) According to the control means 220 to select a variety of automatic cooking items (popcorn, rice warming, hot pot stew, chicken, etc.) coded in the microwave, and in step S6 only the automatic cooking items required by the consumer according to the order of automatic cooking The control means 220 sets the selected and changed items of automatic cooking.

Subsequently, when the cooking change mode key provided in the key input means 210 is turned off, the cooking change off signal is input from the key input means 210 to the control means 220.

Therefore, in step S7, the control means 220 determines whether the cooking change off signal is input, and if the cooking change off signal is not input (NO), the control means 220 returns to the step S3 to perform the automatic cooking item (ITEM). The user selects only the necessary items in the order desired by the customer, and repeats the operation of step S3 or less while changing the items and the order of the automatic cooking.

As a result of the discrimination in step S7, when the cooking change off signal is input (YES), the control means 220 selects only the necessary items in the order desired by the consumer and selects the changed automatic cooking items and order. Stored in the memory means 230, the operation is terminated while maintaining the items and order of the automatic cooking as desired by the consumer even when the power off.

On the other hand, when it is determined in step S4 that the time is input (YES), the process proceeds to step S41, the process proceeds to step S6 while the cooking time or cooking menu is input, and the operation of step S6 or less is repeated.

According to the microwave oven and the control method according to the present invention as described above, the consumer selects only the necessary items among the automatic cooking items (ITEM) and the selection order can be changed as desired according to the frequency of use of the consumer, the changed automatic cooking By storing the items and the order in the memory means, there is an effect that the auto-cooking items and the order can be maintained as desired by the consumer even when the power is turned off.

Claims (4)

A cooking change mode key for inputting a cooking change mode signal so that the consumer selects only the necessary items among the auto cooking items of the microwave in a desired order; Control means for changing the items and the order of automatic cooking by assigning an automatic cooking item desired by the consumer according to the automatic cooking order when the cooking change mode signal is input according to the operation of the cooking change mode key; And a memory means for storing the items and the order of the automatic cooking changed according to the control signal of the control means. The method of claim 1, And a display means for displaying the sequence of automatic cooking according to the control signal of the control means. The method according to claim 1 or 2, And the control means stores, in the memory means, an item and an order of the automatic cooking changed when the cooking change mode key is turned off. A signal input judging step of judging whether a cooking change mode signal has been input in accordance with the operation of the cooking change mode key; A sequence display step of displaying an automatic cooking sequence when it is determined that the cooking change mode signal is input in the signal input judging step; An automatic cooking change step of changing the items and the order of the automatic cooking by assigning the desired automatic cooking items to the automatic cooking order displayed in the order display step; And a memory step of storing the items and the order of the automatic cooking changed in the automatic cooking changing step in a memory means.