KR980010289A - Cooking motion control device of electric rice cooker - Google Patents

Abstract

[0001] The present invention relates to an apparatus and method for controlling a cooking operation of an electric heat-insulated rice cooker. In the conventional electric heat-insulated rice cooker, when a high temperature is generated during a cooking process, The heaters are not operated and safety can be obtained. However, it is troublesome to replace the fuses when the fuses are disconnected due to high power generation. In the present invention, when the internal temperature of the thermo-sensitive rice cooker changes abruptly compared to a normal temperature change, it is determined that the thermo-electric cooker is in an abnormal state and a warning signal is output to inform the user of the abnormality. And to provide an apparatus and method for controlling the cooking operation of an electric heat-preserving rice cooker.

Description

Cooking motion control device of electric rice cooker

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

In particular, at the beginning of the operation of the cooking process, it detects an abnormal overheating inside and outputs a warning signal to notify it, and at the same time, the operation power is cut off to secure the safety of the thermosensor and to allow the thermosensor to perform a normal cooking process And a method of controlling the cooking operation of the rice cooker.

A general electric heat-insulated rice cooker includes a key input unit configured with keys for setting various operating environments of an electric heat-insulated rice cooker having a cooking function and a heat retaining function, a temperature sensor installed in the bottom, body, and lid of the electric heat- A microprocessor for controlling the operation of the thermo-sensitive cooker according to a temperature value detected by a key input of the key input unit and a temperature sensor; a microprocessor installed in a bottom, a lid and a body of the thermo-sensitive cooker, And a display unit for displaying an operation state of the above-mentioned electric heat-inserting rice cooker.

Referring to FIG. 1, the microprocessor incorporated in the rice cooker of the present invention maintains the standby state when the operation power is turned on (S101), and determines whether various cooking modes are set by key input ). When the cooking mode is set, the cooking heater is operated and the heater for the lid and the heater for the lid are operated to execute the set cooking mode (S103). That is, the operation time and the operating temperature of the cooking heater, the heater for the lid, and the heater for the body are controlled according to each cooking mode to perform the cooking mode set. When the operation of the cooking mode set as described above is terminated (S104), the cooking heater is cut off (S105), the operation power supplied to the heater for the lid and the heater for the lid is turned off (S105) It is determined whether the internal temperature of the heat-preserving rice cooker is lower than a predetermined temperature (75 DEG C) (S107).

As a result, when the internal temperature of the electric pressure heat-insulating rice cooker is higher than a predetermined temperature (75 ° C), the above-mentioned operation is repeatedly performed. However, when the internal temperature of the electric pressure heat- The heater is operated (S108) to raise the internal temperature of the electric pressure heat-insulating rice cooker.

Therefore, since the internal temperature of the electric pressure heat-insulated rice cooker is maintained at a predetermined temperature (75 ° C), the rice stored therein can be kept warm.

2, when the operation mode of the thermo-sensitive rice cooker is set to the cooking mode, the operation power is supplied to the cooking heater, the heater for the lid, and the heater for the lid to raise the internal temperature The absorption process of allowing the water to be absorbed into the inside of the rice is carried out for a certain time (say about 10 to 11 minutes) to raise the internal temperature to 45 ° C.

When the absorption process is completed, a first heating process is performed to determine the amount of food while the interior is raised to a predetermined temperature (75 DEG C) to determine the amount of rice introduced into the interior, and then the amount of rice determined in the first heating process The heating process is terminated while a second heating process is performed in which the internal temperature is increased to 102 ° C by distributing the heat quantity based on the results.

Then, the second heating step is extended to heat the inside of the furnace, thereby performing a boiling maintenance step of heating the inside to raise the internal temperature to the cooking completion temperature (102 ° C). After each step is completed, the cooked rice is heated to a predetermined temperature (115 캜) for a predetermined time (about 12 minutes), and the cooking process is completed and the process is switched to the next step.

If a high temperature is generated during the cooking process, the fuse installed on the line for supplying the operating power to the thermo-sensitive rice cooker is disconnected for the safety of the thermo-sensitive rice cooker, so that each heater is not operated, There was a need to replace the fuse when the fuse was blown.

FIG. 1 is a flow chart showing an operation state of a conventional thermally insulating cooker; FIG.

FIG. 2 is a graph showing the cooking process of a general electric heat-insulated rice cooker.

FIG. 3 is a block diagram of an electrically insulating cooker according to the present invention; FIG.

4 is a flow chart according to the operation of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

11: Cooking heater 13: Heater for lid

15: body heater 7: key input unit

19: Warning signal output section 21: Cooking temperature sensor

23: Temperature sensor for lid 25: Temperature sensor for body

27: Microprocessor T1: Absorption process

T2: first heating step T3: second heating step

T4: boiling maintenance process T5: moxibustion process

More particularly, the present invention relates to an apparatus and method for controlling a cooking operation of a rice cooker, and more particularly, to an apparatus and method for controlling a cooking operation of a rice cooker by detecting an abnormal overheating of the rice cooker and outputting a warning signal The present invention relates to an apparatus and method for controlling a cooking operation of an electric heat-preserving rice cooker, which secures the safety of an electric heat-insulated rice cooker and enables an electric heat-insulated rice cooker to perform a normal cooking process.

As shown in FIG. 3, the present invention comprises a key input unit 17 configured with keys for setting an overall operation of the thermosensitive cooker, a heater 11 installed at the bottom and the body of the thermosensor, 23 and 25 for detecting the temperature of the thermo-sensitive rice cooker which generates heat by means of the temperature sensor 21 and the temperature sensor 21, 23 and 25, A microprocessor 27 for controlling the operation of the thermo-sensitive rice cooker according to a temperature detected by the temperature sensor 27, a thermo-electric cooker 27 installed on the bottom, lid and body of the thermo-sensitive cooker, (15) heating the inside of the microcomputer (27), wherein the microprocessor (27) is configured to control the internal temperature of the microprocessor Depending on the time it takes to rise, And an alarm signal output unit 19 configured to output an alarm signal for notifying the abnormal state and informing the abnormal state of the thermo-sensitive rice cooker by the warning signal outputted from the microprocessor 27 . FIG. 4 is a flowchart showing an operation state of the microprocessor 27 for controlling the operation of the thermosensitive cooker according to the present invention, in which the operation of each heater is controlled by a key input or input of each sensor to perform a cooking function and an insulating function (45 DEG C); and, when the absorption process is completed, the internal temperature is raised to a predetermined temperature (65 DEG C) to determine the amount of food to be cooked and to detect an overheating state, (30 sec), and if it is determined that the counting time is longer than a predetermined time (30 sec), the internal temperature is maintained at a predetermined temperature (75 deg. C) Performing a first heating process for heating and a second heating process; and when a counting time is detected to be less than a predetermined time (30 seconds), it is determined as an abnormal condition, a warning signal indicating this is displayed, And the like.

The operation of the present invention will be described below.

When the cooking function or the warming function is set by operating the key input unit 17, the microprocessor 27 recognizes the heater 11 (13 ) 15 is supplied with operating power to cook the rice put into the electric pressure heat-insulating rice cooker or to cook the cooked rice.

At this time, the microprocessor 27 not only receives the key input through the key input unit 17, but also the temperature values detected by the temperature sensors 21, 23, and 25 provided on the bottom and the body of the rice cooker and the lid of the rice cooker. 13, 15 installed in the bottom and the bottom of the rice cooker and the lid of the rice cooker to control the operation of the rice cooker to perform the cooking function or to perform the warming function .

In particular, in the present invention, the time during which the internal temperature rises during the cooking process is counted, and an abnormal overheating state of the rice cooker is checked according to the counted value, and a warning signal indicating abnormal overheating is output. While the operation of the thermo-sensitive rice cooker is controlled so that the subsequent heating process and boiling process can be performed.

Referring to FIG. 4, when the operation source is supplied, the inside is heated and the absorption process S1 is performed to raise the temperature up to a predetermined temperature (45 DEG C) (S2).

When the internal temperature is raised to a predetermined temperature (45 DEG C), the amount of food is determined (S3) as in the conventional technology, and the internal temperature is increased to a predetermined temperature (65 DEG C) And counts the time to rise.

When the internal temperature rises to a predetermined temperature (65 deg. C), the counting value is measured (S6) and it is judged whether the counting time has passed a predetermined time (30 sec) (S7).

If it is determined that the counted time is longer than the predetermined time (30 sec), it is determined that the thermo-sensitive rice cooker is operating normally and the inside is heated to a predetermined temperature (75 캜) (S9) And then a second heating step (S10) are sequentially performed.

However, if it is determined that the time is less than the predetermined time (30 sec), the controller determines that an abnormal overheating phenomenon has occurred in the inside of the thermosensitive cooker and displays an abnormal state (S11) And outputs a warning signal to the output unit 19 to generate a buzzer sound (S12).

Then, the microprocessor 27 forcibly interrupts the operation power supplied to the thermo-sensitive rice cooker (S13) in order to forcibly solve the abnormally overheated condition of the thermo-sensitive rice cooker even after a predetermined time has elapsed.

Therefore, in addition to being able to recognize and overcome the abnormally overheated state of the thermo-electric cooker, if the abnormal overheating state is not solved, the operation power is forcibly shut off so that the safety of the thermo-electric cooker can be achieved.

In particular, by outputting a warning signal to notify the user of an abnormal overheating at startup, the user can turn off the operation power, thereby eliminating the need to replace the fuse due to a short circuit. As described in the claims, the present invention has been described with respect to an embodiment of the apparatus and method for controlling the cooking operation of the thermosensitive cooker, but the present invention is not limited thereto, and various applications and modifications may be made by those skilled in the art.

As described above, the present invention has been proposed in order to overcome the drawbacks of the related art. As described above, when the internal temperature of the thermo-sensitive rice cooker changes abruptly compared with a normal temperature change, it is determined as an abnormal state, The present invention is intended to provide an apparatus and method for controlling the cooking operation of an electric heat-preserving rice cooker which is capable of forcibly preventing the electric heat-preserving rice cooker.

According to an aspect of the present invention, there is provided a method of controlling an operation of a heater by controlling an operation of each heater by a key input or an input of each sensor, Counting the time during which the internal temperature is raised to a predetermined temperature (65 DEG C) in order to determine the amount of food to be consumed when the absorption process is completed and to detect an overheating state; The first heating step and the second heating step of heating the internal temperature to a predetermined temperature (75 DEG C) when the counting time is detected as a predetermined time (30 sec) or more, When the counting time is detected to be less than a predetermined time (30 sec), it is determined as an abnormal state, and a warning signal indicating that the abnormal state is displayed and then the operation power is turned off.

Claims (2)

A key input unit 17 constituted by keys for setting the overall operation of the electric heat-insulated rice cooker, an electric insulated rice cooker installed in the bottom, body and lid of the electric heat-insulated rice cooker and heated by the heaters 11, 13 and 15 The temperature sensor 21, 23 and 25 for detecting the temperature and the temperature value detected by the key input of the key input unit 17 and the temperature sensors 21, 23 and 25, A heater 11 and 13 installed at the bottom and lid of the rice cooker for heating the inside of the rice cooker and operating under the control of the microprocessor 27 The microwave oven according to any one of claims 1 to 3, wherein the microprocessor (27) is configured to determine whether the thermo-electric cooker is normal or not according to a time taken for the internal temperature to rise to a predetermined temperature To judge the abnormal state It is configured to output an alarm signal, and; And a warning signal output unit (19) for informing an abnormal state of the thermo-sensitive rice cooker by an alarm signal outputted from the microprocessor (27). Performing an absorption process for heating the internal temperature to a predetermined temperature (45 ° C) in order to control the operation of each heater with a key input or an input of each sensor to perform a cooking function and a warming function; Determining the amount of food to be consumed when the absorption process is completed, and counting a time at which the internal temperature rises to a predetermined temperature (65 DEG C) to detect the overheating state; Determining whether a counting time has passed a predetermined time (30 seconds); Performing a first heating process and a second heating process for heating the internal temperature to a predetermined temperature (75 캜) when the counting time is detected to be longer than a predetermined time (30 sec); And when the counting time is less than a predetermined time (30 sec), it is determined that the abnormal state is detected, and a warning signal indicating the abnormal state is displayed and then the operation power is turned off. ※ Note: It is disclosed by the contents of the first application.