KR19980030866A - Heater operation control method of electric rice cooker - Google Patents

Abstract

The present invention relates to an electric thermal rice cooker, the first step of determining whether the main power is supplied while maintaining the standby state, the second step of setting the operating environment by the key input, and when cooking starts the current in the electric rice cooker A third step of detecting a temperature, a fourth step of calculating a difference value between the present temperature and an operating temperature of each operation mode, and if the difference is more than a predetermined value, the bottom heater 20 is operated to operate the electric rice cooker. The fifth step of determining whether the ongoing operation mode is terminated while heating the inside of the electric heating rice cooker by heating the inside of the auxiliary heater 26 and below, and repeating the above operation if the operation mode is in progress. When finished, by changing the operation mode to perform the sixth step of repeating the above operation, it is possible to perform the cooking process, the steaming process, the warming process more accurately A.

Description

Heater operation control method of electric rice cooker

1 is a block diagram showing a conventional electric rice cooker,

Figure 2 is a graph showing the cooking process of the conventional electric rice cooker,

Figure 3 is a flow chart showing the operating state of the electric rice cooker of Figure 1,

Figure 4 is a block diagram of the electric rice cooker according to the present invention,

Figure 5 is a flow chart showing the operating state of the electric rice cooker for solving the object of the present invention.

Explanation of symbols on the main parts of the drawings

10 microprocessor 12 key input unit

14 detection unit 16 heater driving unit

18: display unit 20: floor heater

22: body heater 24: lid heater

26: auxiliary heater T1: absorption process

T2: 1st heating process T3: 2nd heating process

T4: Boiling process T5: Moxibustion process

Detailed description of the invention

[Objective of the invention]

TECHNICAL FIELD OF THE INVENTION AND THE TECHNOLOGY OF THE FIELD

The present invention relates to an electric heat cooker.

In particular, the present invention by selectively supplying the operating power supplied to the floor heater, the body heater, the lid heater, the auxiliary heater in order to perform the cooking process, the moxibustion process, the warming process according to the difference between the current temperature and the operating temperature By controlling the temperature difference between the temperature and the operating temperature finely, it relates to a heater operation control method of the electric thermal cooker to perform the cooking process, the moxibustion process, the warming process more accurately.

As is well known, the electric thermal rice cooker is provided with an operation environment for each process according to the contents of the bar, which is first started after the cooking operation of each cooking key after the state where the inner pot is settled.

Conventional electric thermal rice cooker as shown in Figure 1, a key input unit 12 consisting of keys for setting the various operating environment of the electric thermal rice cooker having a cooking function and the thermal insulation function, and the bottom of the electric thermal rice cooker and The thermostat rice cooker is installed on the body and the lid and detects a temperature generated by various heaters by a sensor, and an electric heat cooker based on a temperature value detected by a key input and a temperature sensor of the key input unit 12. Microprocessor 10 for controlling the operation of, and is installed on the bottom and lid and the body of the electric thermal cooker and operates under the control of the microprocessor 10 to control the operation of the heater to heat the inside of the electric thermal cooker It consists of the heater drive part 16 and the display part 18 which displays the operation state of the said electric thermal rice cooker.

Referring to the electric insulation rice cooker in more detail by referring to FIG. 3, the microprocessor 10 built in the electric insulation rice cooker maintains the standby state when the operation power is supplied (S301), and determines whether various cooking modes are set by key input. It determines (S302).

As a result of the determination, if the cooking mode (refers to Jinbap, Donbap, Ordinary rice, Mixed grain rice, brown rice, etc.) is not set, the state is continuously maintained (S301). The heater, the lid heater and the body heater are operated to execute the set cooking mode (S303).

That is, it is determined whether the cooking is completed by performing the set cooking mode by controlling the operation time or the operating temperature of the bottom heater, the lid heater and the body heater of the heater driving unit 16 according to each cooking mode (S304).

The microprocessor 10 continues to execute the cooking mode (S303) when the operation of the cooking mode is not terminated, and when the operation of the set cooking mode is terminated, the bottom heater, the lid heater, and the like. Shut off the operating power supplied to the body heater (S305), while performing the warming function is detected by the temperature sensor for the bottom of the sensing unit 14 (S306) The internal temperature of the electric rice cooker is a certain temperature (for example, 75 ℃ It is determined whether or not lower than (S307).

As a result, when the internal temperature of the electric insulation rice cooker is higher than a predetermined temperature (eg 75 ° C.), the internal temperature of the electric insulation rice cooker is detected again (S306), and the internal temperature of the electric insulation rice cooker is a constant temperature (eg 75 ° C.). If lower than), the various heaters of the heater driving unit 16 are operated (S308) to increase the internal temperature of the electric thermal cooker.

Therefore, since the internal temperature of the electric rice cooker maintains a certain temperature (eg 75 ℃), it is possible to heat the rice stored inside.

Referring to the cooking process of the electric rice cooker in more detail by FIG. 2, first, when the operation mode of the electric rice cooker is set to the cooking mode by supplying the operating power to the bottom heater and lid heater and body heater of the heater driving unit 16 inside Absorption process (T1) is carried out for a certain time (about 10 to 12 minutes) while raising the temperature so that water is absorbed into the rice inside. Raise it up.

When the absorption step (T1) is completed to allow the water to be absorbed into the interior of the rice is completed by performing the first heating step (T2) to determine the cooking amount while raising the interior to a predetermined temperature (for example, 75 ℃) rice inside the rice Determine the amount.

That is, when it takes about 2 minutes to increase the internal temperature of the electric rice cooker to 75 ° C, it is determined as the amount of cooking for one person and is supplied to each heater in the second heating step T3 and the boiling maintenance step T4. If the amount of heat to be adjusted is adjusted to 80%, and it takes about 3 minutes, it is determined as the cooking quantity of 2 servings, and the amount of heat supplied to each heater in the second heating step (T3) and boiling holding step (T4) is adjusted to 85%. .

When it takes about 4 minutes, it is determined as the cooking quantity of 3 servings, and the amount of heat supplied to each heater is adjusted to 90% in the second heating step T3 and the boiling holding step T4. The amount of heat supplied to each heater is adjusted to 95% in the second heating step (T3) and the boiling holding step (T4) while it is determined to be 4 servings. By adjusting the amount of heat supplied to each heater in the second heating step (T3) and boiling maintenance step (T4) to 100% in the second heating step (T3) to raise the internal temperature to a certain temperature (for example, 102 ℃) .

Subsequently, the second heating step (T3) is extended to heat the inside to perform a boiling maintenance step (T4) for heating the inside so that the internal temperature rises to the cooking temperature (for example, 125 ℃).

After each step is completed, it is determined that all cooking steps are completed after performing the steaming process (T5) of heating cooked rice to a predetermined temperature (115 ° C.) for a predetermined time (about 12 minutes). When it is switched to the warming process.

In order to perform the absorption process, the first heating process, the second heating process, the boiling maintenance process, the moxibustion process, and the thermal insulation process, that is, each operation mode, each heater is operated to be heated to a temperature for performing the operation mode or the operation mode. Heat for a time to perform. However, a heater that heats the inside of the electric thermal cooker to a certain temperature or to a certain temperature for a predetermined time has a drawback in that it does not finely control the internal temperature because the heater heats the inside with a certain amount of heat.

[Technical Challenges to Invent]

The present invention selectively supplies the operating power supplied to the floor heater, the body heater, the lid heater, the auxiliary heater in accordance with the difference between the current temperature and the operating temperature in order to perform the cooking process, the steaming process, the warming process, the internal temperature The purpose of the present invention is to provide a method of controlling the heater operation of an electric thermal cooker to more accurately perform the cooking process, the moxibustion process, and the thermal insulation process by reducing the difference between and the operating temperature.

The present invention for achieving the object as described above is a step of determining whether the main power is supplied while maintaining the standby state, setting the operating environment with a key input, when cooking starts the current temperature in the electric thermal cooker Detecting, calculating a difference value between the current temperature and an operation temperature of each operation mode, and if the difference is greater than or equal to a predetermined value, operating a bottom heater to heat the inside of the electric rice cooker, and if it is less than an auxiliary heater, Determining whether the operation mode is in progress while heating the inside of the electric thermal cooker by operating the operation, and repeating the above operation if the operation mode is in progress, change the operation mode when the operation is repeated and repeat the operation Characterized in that it is made to perform the steps.

Composition and Action of the Invention

Electric insulation rice cooker for explaining the present invention, as shown in Figure 4, the key input unit 12 consisting of keys for setting the various operating environment of the electric insulation rice cooker having a cooking function and the insulation function, and the bottom of the electric insulation rice cooker and The thermostat rice cooker is installed on the body and the lid and detects a temperature generated by various heaters by a sensor, and an electric heat cooker based on a temperature value detected by a key input and a temperature sensor of the key input unit 12. The microprocessor 10 for controlling the operation of the bottom and the lid and the body of the electric rice cooker and is operated under the control of the microprocessor 10 and the bottom heater 20 for heating the inside of the electric rice cooker, Body heater 22, lid heater 24, auxiliary heater 26; auxiliary heater 26 is installed on the bottom surface of the electric heat cooker, such as the bottom heater 20, and separate from the bottom heater 20 microprocessor ( 10) It is configured to perform an operation, and also displays a heater driving unit 16 for controlling the operation of the heating heater (16), and the operation state of the electric rice cooker as described above, which is configured to dissipate a small amount of heat compared to the floor heater (20). It consists of the display part 18 shown to be.

5 is a flowchart illustrating an operating state according to an embodiment of the electric thermal cooker for achieving the object of the present invention, the first step of determining whether the main power is supplied while maintaining the standby state, the operation by key input A second step of setting an environment, a third step of detecting a current temperature in the electric rice cooker when cooking is started, a fourth step of calculating a difference value between the current temperature and an operating temperature of each operation mode, and If the difference is more than a predetermined value, the bottom heater 20 is operated to heat the interior of the electric rice cooker, and if it is less than the auxiliary heater 26 is operated to heat the interior of the electric rice cooker to determine whether the ongoing operation mode is finished. Performing a fifth step and repeating the above operation if the operation mode is in progress, and performing a sixth step of repeatedly operating the operation by changing the operation mode when the operation mode is finished. Lost

Next, the operation will be described.

While maintaining the standby state (S1) while checking whether the power is switched to the ON state by the key input of the key input unit 12 (S2), if the power is not switched to the ON state continues to maintain the standby state (S1), When the operating power of the thermal rice cooker is supplied, the data for the operation environment of the electric rice cooker (eg, cooking method, cooking amount, etc.) set as key input of the key input unit 12 is stored in a not shown memory, and then That is, it is checked whether a start key is input (S4).

As a result, if the start key is not input, the data on the operating environment is stored and the standby state is maintained. However, when the start key is input, the heater signal is output to the heater driving unit 16 according to the set operating environment. 24) (26) is driven to heat the inside of the electric rice cooker. The operation of each of the heaters 20, 22, 24, 26 is performed by a temperature value detected by the temperature sensor of the sensing unit 14 together with the operating environment. In other words, each operation mode (absorption process, first heating process, second heating process, boiling maintenance process, moxibustion process, insulation process, etc.) is performed for a temperature and time suitable for the operating environment in which the internal temperature of the electric insulation rice cooker is set. The power supplied to each heater 20, 22, 24, 26 is interrupted so that it may be.

Here, the operation of controlling the operation power supplied to the floor heater 20 and the auxiliary heater 26 will be described in more detail. As described above, the operation power is supplied to each heater 20, 22, 24, and 26. By heating the inside of the electric rice cooker to detect the current temperature of the electric rice cooker detected by each temperature sensor of the sensing unit 12 (S5).

In this case, the present temperature may be an average value of the internal temperature detected by the floor temperature sensor, the body temperature sensor, and the lid temperature sensor, or the temperature value detected by the floor temperature sensor. The temperature value detected by the sensor will be described as the current temperature.

Next, the microprocessor 10 is set as a key input, and obtains a difference value between the operating temperature of the current operation mode and the current temperature detected by the floor temperature sensor (S6). Then, it is determined whether the difference is greater than or equal to a predetermined value (S7).

As a result, if the difference is more than a predetermined value, the bottom heater 20 with a large amount of heat is driven (S8) to heat the interior of the electric rice cooker, but if the predetermined value is less than the auxiliary heater (lower than the bottom heater 20) 26) to operate (S9) so that the internal temperature of the electric rice cooker reaches the operating temperature of the ongoing operation mode.

That is, when the operation mode in progress is to reach the operating temperature or to maintain the operating temperature, when the difference value is large according to the difference value between the present temperature and the operating temperature detected by the floor temperature sensor, the floor heater ( 20) when the difference value is small, by operating the auxiliary heater 26 to heat the interior of the electric rice cooker, it is possible to finely adjust the internal temperature of the electric rice cooker.

Subsequently, the floor heater 20 and the auxiliary heater 26 are selectively operated to determine whether the ongoing operation mode is terminated while heating the inside of the electric rice cooker. That is, in the operation mode for heating up to the operating temperature, it is determined whether the current temperature in the electric rice cooker is heated up to the operating temperature, and in the operation mode for maintaining the operating temperature, it is determined whether the operating time has elapsed.

When the operation mode is in progress, the process S5, S6, S7, S8, and S9 are repeated to heat the inside of the electric rice cooker, and when the operation mode ends, the operation mode in progress is changed to the next operation mode. By changing (S11) to while repeating the above-described process (S5) (S6) (S7) (S8) (S9) (S10) to heat the inside of the electric rice cooker.

Accordingly, it is possible to finely adjust the internal temperature according to each operation mode of the electric rice cooker.

[Effects of the Invention]

As mentioned above, the present invention corresponds to the operating environment set in adjusting the operating temperature of each operation mode (absorption process, first heating process, second heating process, boiling maintenance process, steaming process, and thermal insulation process). According to the difference between the operating temperature and the current temperature of the electric rice cooker by operating a floor heater and a sub heater having different heating value by heating the inside of the electric rice cooker, the absorption process of the electric rice cooker, the first heating process, It is possible to finely control the internal temperature of the electric thermal cooker for performing the second heating process, boiling maintenance process, moxibustion process, thermal insulation process.

Claims (3)

A first step of determining whether the main power is supplied while maintaining the standby state; A second step of setting an operation environment by key input; A third step of detecting a current temperature in the electric rice cooker when cooking is started; A fourth step of calculating a difference value between the current temperature and an operation temperature of each operation mode; If the difference is more than a predetermined value, the bottom heater 20 is operated to heat the interior of the electric rice cooker, and if it is less than the auxiliary heater 26 is operated to heat the interior of the electric rice cooker to determine whether the ongoing operation mode is finished. A fifth step; And a sixth step of repeatedly performing the above-described operation via the operation mode when the operation mode is in progress. The method according to claim 1, wherein the heat amount of the bottom heater (20) is greater than that of the auxiliary heater (26). The method according to claim 1, wherein the end state of the operation mode is determined based on an operation temperature or an operation time.