KR20000009544A - Method for controlling steam discharge for electric pressure heating cooker - Google Patents

Abstract

PURPOSE: A method for controlling a steam discharge for an electric pressure heating cooker is provided to enable to eat food immediately after finishing cooking by discharging the steam in the cooker before completing the cooking. CONSTITUTION: A steam discharge controlling method is formed by:a first step for judging an establishment of a pressurizing cooking; a second step for establishing a cooking time after the establishment of the pressurizing cooking for progressing a heating process after a start button being pushed; a third step for judging a finish point of the heating process; a fourth step for displaying a pause time after completing the heating process and judging if plural minutes before completing the pause process while progressing the pause process; a fifth step for starting a vapor discharging when reaching plural minutes before completing the pause process; and a sixth step for generating an alarm after judging the completion of the cooking while finishing the pause process for completing the cooking. Therefore, the steam is discharged after a temporary prepared steam discharge for preventing an accident caused by a carelessness of a user.

Description

Steam discharge control method of electric pressure cooker

The present invention relates to an electric rice cooker, and more particularly, to a method for controlling steam discharge in an electric pressure thermal cooker.

Conventional electric pressure thermal rice cooker discharged the internal steam automatically by applying power to the solenoid valve at the same time as cooking is completed.

However, the conventional technology has a problem in that the user feels bored because the steam is discharged after the completion of cooking and the user must wait while the steam is completely discharged before eating.

In addition, conventionally, when steam is discharged after cooking is completed, the steam is suddenly discharged without the user's awareness without the warning preliminary steam discharge operation. When a contact occurs, there is a problem that a risk factor such as a burn or the like is always latent.

Therefore, the present invention is to discharge the steam in the rice cooker before the completion of cooking in order to improve the conventional problems, the steam discharge control of the electric pressure thermostat cooker was devised to discharge the steam almost at the end of cooking to cook immediately The purpose is to provide a method.

In addition, the present invention provides a second object to prevent the occurrence of a safety accident due to sudden steam discharge by continuously performing the steam discharge after the user is aware of the steam discharge operation by performing a preliminary steam discharge for a predetermined number of times during steam discharge There is this.

1 is a circuit diagram showing an embodiment of the present invention.

Figure 2 is an exemplary view showing a control panel of the electric pressure thermal cooker of the present invention.

Figure 3 is a waveform diagram showing a pressure cooking process of the present invention.

Figure 4 is a waveform diagram showing a buzzer driving signal at the end of cooking of the present invention.

5 is a waveform diagram of a valve drive signal for steam discharge of the present invention.

6 is a signal flow diagram for the pressure cooking process in the present invention.

Explanation of symbols on the main parts of the drawings

101: microcomputer 102: buzzer

103: valve driving unit 104: steam discharge valve

105: key input unit 106: display unit

111: Menu button 112: Start cooking button

113: cancel / warm button 114: increase / decrease button

The present invention comprises the steps of judging the setting of the pressure cooking to achieve the above object, setting the cooking time when judging the setting of the pressure cooking in the step and proceeding the heating process when the start button is pressed, the heating process in the above Determining whether or not the end of the heating process, and if the time of completion of the heating process to display the idle time, and then proceeds to the rest process to determine whether the end of the rest process, and before reaching the end of the rest process, the steam is discharged In the step of, and when the rest process is finished in the above, it is determined that the completion of the cooking time after generating a buzzer, characterized in that the step of ending the cooking.

In the heating process, the first process of heating for a predetermined time so that the temperature in the rice cooker increases proportionally to a predetermined temperature (T1) when cooking is started, and when the temperature in the cooker reaches a predetermined temperature (T1), heating is temporarily performed. A second process of determining whether the temperature is lowered to a predetermined temperature T2 after stopping, a third process of reheating the temperature of the cooker to a predetermined temperature T3 when the temperature in the cooker reaches a predetermined temperature T2, and the temperature of the cooker When the predetermined temperature (T3) is a fourth process of temporarily suspending the heating, and the second to fourth process is characterized in that to perform a fifth process to repeat until the end of the heating. (T1> T3> T2)

The steam discharge is characterized in that the steam is discharged continuously after preliminary preliminary discharge for a predetermined time.

In the above steam discharge is characterized in that the steam discharge time is set so that the steam is almost discharged until the completion of the cooking process is complete.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a block diagram showing an embodiment of the present invention, as shown therein, a key input unit 105 for selecting cooking type and time, cooking start or cancellation of a set mode, cooking type and time, etc. The display unit 106 to be displayed, the buzzer 102 which generates sound by the buzzer driving signal, the steam discharge valve 104, and the steam discharge valve 104 are applied to the steam discharge valve 104 by the valve driving signal, After displaying the valve driving unit 103 for discharging steam and the initial cooking menu on the display unit 106, the cooking type and cooking time selected by the key input unit 105 are displayed on the display unit 106. When the start button is pressed at 106, the valve driving unit 103 is controlled in advance by controlling the selected cooking operation a few minutes before the end of the rest process, and the steam discharge valve 104 is turned on to turn on the steam in the cooker. At discharge It is composed of a microcomputer 101. The

The valve driver 103 includes a transistor Q1 that is turned on to the ground side to apply a voltage Vcc to the steam discharge valve 104 when the valve drive signal of the microcomputer 101 becomes high.

Reference numerals 'R1 and R2' in the drawings are pull-up resistors for applying a voltage Vcc to the buzzer 102 and the steam discharge valve 104.

As shown in the exemplary view of the control panel of FIG. 2, the key input unit 105 includes a menu button 111 for selecting a cooking menu, a button 112 for starting cooking, and a canceling or warming menu. It comprises a cancel / keep button 113, and the increase / decrease button 114 for setting the desired cooking time.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

When the electric pressure heat cooker of the present invention reaches a few minutes before the cooking is completed (for example, two minutes ago) in the resting process during cooking, the microcomputer 101 sends a driving signal of the steam discharge valve 104 to the valve driving unit as shown in FIG. 5. Output to 103 to open the steam discharge valve 104 for 1 second and close again for 1 second to temporarily preliminarily discharge the steam to recognize the completion of cooking and steam discharge to the user and then open the steam discharge valve 104 continuously Let the steam out.

This operation process will be described in detail based on the signal flow chart of FIG. 6 taking the case of pressure cooking as an example.

First, the user puts the ingredients into the rice cooker, closes the lid, and while looking at the display unit 106 selects the pressure cooking with the menu button 111 in the key input unit 105, the microcomputer 101 selects the menu on the display unit 106 And pressure cooking time.

At this time, when the user arbitrarily adjusts the cooking time, the desired cooking time is set by the increase / decrease button 114.

Accordingly, after the cooking type and time are set in the above-described operation, when the user presses the cooking start button 112, the microcomputer 101 starts the cooking.

At this time, the cooking process is performed in the same process as FIG. 3 and the microcomputer 101 determines the end time and the steam discharge time of each process while controlling the heating process, the rest (moxibustion) process, etc. as the cooking process proceeds. .

That is, the microcomputer 101 continues heating until the temperature of the rice cooker rises proportionally from the start of cooking until the temperature reaches the predetermined temperature T1. After that, when the temperature of the cooker reaches the predetermined temperature T1, heating is performed. After the suspension, it is determined whether the temperature of the cooker drops to a predetermined temperature (T2; T2 < T1).

At this time, when the temperature of the cooker falls to a predetermined temperature (T2), the microcomputer 101 proceeds with heating again until the temperature of the cooker becomes a predetermined temperature (T3; T3> T2), the temperature of the cooker ( When T3) is reached, the heating is suspended, and when the temperature reaches T2, the heating process is repeated to determine the end of the heating process.

Accordingly, when the heating process comes to an end time, the microcomputer 101 displays the rest time on the display unit 106 and then proceeds to the end of the moxibustion process while performing the moxibustion process, which is a rest process.

At this time, when it reaches the cooking completion moisture field (for example, two minutes ago), the microcomputer 101 controls the valve driving unit 103 to drive the steam discharge valve 104 by turning on / off the transistor Q1. The steam is discharged, and as shown in the waveform diagram of FIG. 5, the transistor Q1 is turned on for 1 second and then turned off to open the steam discharge valve 104 for 1 second and close 1 second to control the cooking end point and the steam discharge operation. Then, by continuously turning on the transistor Q1, the steam discharge valve 104 is kept open to discharge steam in the cooker.

Thereafter, when the cooking is finished, the microcomputer 101 transmits a buzzer driving signal to the buzzer 102 to generate a buzzer sound as shown in the waveform diagram of FIG.

Accordingly, the microcomputer 101 controls the valve driver 103 at the time point when cooking is finished, turns off the transistor Q1 to close the steam discharge valve 104, and then proceeds to the thermal insulation operation to the display unit 106. The setting of the keep warm operation is displayed.

As described in detail above, the present invention almost discharges the steam in the cooker before a predetermined time for the completion of the cooking process, so that the steam is discharged after the completion of the cooking as in the prior art without boring. It is possible to eat immediately after the cooking is completed, and by discharging the steam continuously after the temporary preliminary steam discharge, it is possible to prevent a safety accident due to user's carelessness.

Claims (6)

A first step of determining the setting of the pressure cooking, a second step of setting the cooking time if the pressure cooking is set in the above, and a start time of the heating process if the start button is pressed after the cooking time is set in the above; A third step of determining whether the step is completed, the fourth step of determining whether it is a predetermined time before the end of the rest process while the rest process is performed after displaying the rest time when the heating process is completed, and the end of the rest process above. When reaching a predetermined time before the fifth step of proceeding to discharge the steam, and when the rest process is finished, the electric pressure insulating rice cooker characterized in that it performs a sixth step of generating a buzzer sound and ending the cooking after the completion of the cooking process To control steam emissions The method of claim 1, wherein the heating step of the third step is a first step of heating for a predetermined time until the temperature in the cooker is proportionally elevated to a predetermined temperature (T1) when cooking is started, wherein the temperature in the cooker is predetermined When the temperature (T1) reaches a predetermined temperature range (T2 ~ T3) for a predetermined time to perform a second step of repeating the heating / stopping steam discharge control method of the electric pressure thermostat rice cooker. T3> T2) The method of claim 2, wherein the second process comprises determining whether the temperature of the rice cooker falls to a predetermined temperature T2 after temporarily stopping heating when the temperature of the rice cooker reaches a predetermined temperature T1, and wherein the temperature of the rice cooker is a predetermined temperature. (T2) electric pressure insulation, characterized in that to repeat the process of reheating to a predetermined temperature (T3) and, if the temperature in the cooker is a predetermined temperature (T3), the process of temporarily suspending the heating until the end time of heating. How to control steam discharge of rice cooker (T1> T3> T2) The steam discharge control method of the electric pressure thermal cooker according to claim 1, wherein the steam discharge of the fifth step is continued to be discharged until the completion of cooking after temporarily discharging the steam for a predetermined time. The method of claim 4, wherein the steam is temporarily discharged at least once. The steam discharge control method of the electric pressure thermal cooker according to claim 1 or 4, wherein the steam discharge is set at a steam discharge start time such that the steam in the cooker is discharged almost until the completion of the cooking process when the rest process is completed.