KR970005958B1 - Method for making egg in electromagnetic induction heating rice cooker - Google Patents

Abstract

The control method, applying temperature and time optimal to half boil or hard boil of eggs in option regardless of the number of eggs to be cooked, consists of first heating process which, upon selecting the key for half boil or hard boil keeps the temperature in the pan and the temperature out the pan in parallel for a time to heat the pan to the temperature of setting and the 2nd heating process which on reaching the 1st set temperature sets respective times for half boil or hard boil modes with key manipulation to heat the pan for the time of setting.

Description

How to control egg half-cooking and ripening of electromagnetic induction cooker

1 is a cross-sectional view of the electromagnetic induction heating rice cooker for realizing the egg half-boiling of the present invention.

Figure 2 is a system configuration of the egg half-boiling / ripening device of the electromagnetic induction heating rice cooker of the present invention.

3 is a signal flow diagram of the process of ripening and ripening eggs applied to FIG.

4 shows the operating state cycle of the inverter means of FIG.

* Explanation of symbols for main parts of the drawings

100: first rectifying means 101: smoothing means

102: inverter means 103: inverter control means

104: switching drive means 105: current detection means

106: negative feedback amplification means 107: integral means

111: key operation means 112: system control means

The present invention is to cook eggs using an induction heating rice cooker, and more specifically, to give the most suitable temperature and time for eggs half-boiling and ripening, regardless of the number of eggs to be boiled, selectively half-boiled or ripened eggs The present invention relates to a method of controlling egg half-cooking / maturation of an electromagnetic induction heating cooker.

In general, in order to boil eggs, put the eggs to be cooked in a conventional rice cooker and supply the appropriate amount of water according to the quantity of the eggs and heat them for a long time by heating or electric power through a cooking range of a gas range or an electric rice cooker to soften the eggs or Got matured.

However, when the eggs are to be cooked by using thermal power or electric power, the most suitable temperature for the ripening condition of the eggs, that is, 91 ° C., must be maintained for a certain time, so that the eggs are cooked and heated to a higher temperature or time. Ripening takes place.

Therefore, it is difficult to soften the eggs through the cooking mode of the electric rice cooker at the appropriate temperature and time conditions as described above, and only the user must take out the eggs frequently while the eggs are being heated to determine half-boiling or ripening, so as to burn the steam by the steam of the rice cooker. Followed by the danger of, even to win the eggs half-boiled, ripening or want to ripen, there was a problem that the eggs boiled to complete the ripening.

Accordingly, an object of the present invention, in order to solve such a conventional problem, regardless of the number of eggs to be boiled, give the most appropriate temperature and each time for the egg half-boiling or ripening, each time the egg at the most appropriate temperature The present invention provides a method of controlling the egg ripening / maturation of an electromagnetic induction heating cooker so as to be half-boiled or ripened in an optimal state by a user's selection by heating.

As a method for achieving the object of the present invention, the first heating process for maintaining the temperature in the metal pan in parallel with the outside temperature for a predetermined time and then heating the temperature in the metal pan until the set temperature is reached; When the set temperature is reached in the primary heating process, the eggs are searched for the ripe or mature mode of the eggs from the key operation means, and the time is set differently according to the retrieved mode, and the metal pan is heated for the set time. Or it is to be achieved by a mature secondary heating process, described in detail below based on the accompanying drawings of the present invention.

1 is a cross-sectional view of the electromagnetic induction heating cooker for realizing the egg half-cooking / ripening of the present invention, as shown in this, is installed in the upper portion of the electromagnetic induction heating cooker 126 is heated in a thermal insulation mode to maintain a constant temperature The upper heater 116 to maintain the, and the circumferentially installed on the inner side of the cooker 126 is selectively heated with the upper heater 116 in the warming mode to maintain the heat at a constant temperature 118 ) And a working coil, which is a lower heater that is circumferentially installed in the lower portion of the rice cooker 126 and is seated between the side heater 118 and heats the metal fan 110 by an electromagnetic induction effect. 102a, upper and side temperature sensing members 120 and 122 which are located at the upper and side surfaces of the rice cooker 126 to measure the upper and side temperature inside the rice cooker, and the lower places of the rice cooker 126. Lower temperature to detect lower temperature It is composed of a material portion 123, a cooling fan 114 for cooling the interior of the cooker located at the lower place of the cooker 126.

And, Figure 2 is a system configuration of the egg half-boiling / ripening device of the electromagnetic induction heating cooker of the present invention, as shown, the egg half-cooked / matured key is assigned to select the cooking function, warming function and egg ripening / ripening function The first operation means for converting the analog signal corresponding to the temperature detected by the key operation means 111, the upper temperature sensing member 120, the side temperature sensing member 122, the negative temperature sensing member 123 to a digital signal To the third analog / digital converting means 119 (121) and 123, and the current air temperature and the key operating means converted from the first to third analog / digital converting means 119, 121 and 123 ( System control means 112 for controlling the overall operation of the electromagnetic induction heating rice cooker according to various function data selected from 111, first rectifying means 100 for rectifying the input AC power source AC with a pulsating DC voltage, Pulsating DC voltage rectified by the first rectifying means 100 The smoothing means 101 for smoothing smoothly with the choke coil L1 and the condenser C1, and the voltage output from the smoothing means 101 in accordance with the pulse width modulation signal input from the outside are resonated and Working coil 102a for inducing vortices in the metal pan 110 to be heated by the electromagnetic induction effect due to the generated magnetic field to heat the food in the metal pan 110 to a desired heating temperature, the working coil 102a and a series of Inverter means (102) consisting of a resonant capacitor (C2), a damping diode (D1), and a switching element (TR1) forming a resonant circuit of a pulse width modulation signal in accordance with the total amplitude generated by the inverter means (102). An inverter control means (103), a switching drive means (104) for controlling the switching element (TR1) of the inverter means (102) in accordance with the pulse width modulation signal generated by the inverter control means (103), and the input AC To detect current from the power supply (AC) The comparison deviation value is compared by comparing the current detection means 105 with the voltage level detected by the current detection means 105 and the reference level value set and input for each function from the system control means 112. Integrating the output of the negative feedback amplifying means 106 and the comparison deviation value of the negative feedback amplifying means 106, and controlling the output pulse width modulation signal of the inverter control means 103 according to the integral value to switch switching drive means ( Integrating means 107 for determining the on / off time of the switching element TR1 through the 104, a transformer 108 for stepping down the input AC power source AC, and a voltage stepped down in the transformer 108 The upper rectifier 116 and the side heater 118 by rectifying the second rectifying means 109 for applying the operating voltage of the system control means 112 and the control signal output from the system control means 112. An upper heater driving means 115 and a side heater driving means 117 for generating heat; It constitutes the display means 125 to display a variety of functional status of an electromagnetic induction heating cooker according to a control signal group of the system control unit 112.

In the inverter control means 103 is a voltage detection means (103a) for detecting the resonance voltage generated by the inverter means 102 to determine the time to generate a sensed wave, and the voltage detected by the voltage detection means (103a) The triangular wave generating means 103b1 generates a triangular wave and compares the generated triangular wave with the voltage integrated in the integrating means 107 through the comparing means 103b2 and according to the comparison result, the switching element of the inverter means 102 ( A pulse width modulated signal generating means 103b for generating a pulse width modulated signal for deciding the on / off time of TR1). In the figure, reference numeral D2 denotes a diode and R denotes a resistance.

And, FIG. 3 is a signal flow diagram of the half-boiling / cooking process of the egg to which FIG. 2 is applied. As shown in FIG. 3, the temperature in the metal pan 110 is maintained in parallel with the outside temperature for a predetermined time t1. In the primary heating process (ST100) and the primary heating process (ST100) for heating the temperature in the metal fan 110 through the working coil (102a) of the inverter means 102 until reaching the set temperature (T) When the set temperature (T) is reached, the half-boiled or ripened mode of the egg from the key operating means 111 is searched, and the time t2 and t3 are set differently according to the retrieved mode, and the metal is The secondary heating process (ST101) of heating or heating the fan 110 is made soft or mature.

Thus, when described in detail with reference to Figures 1 to 4 the effect of the present invention made as follows.

In general, the cooking function in the electromagnetic induction heating cooker will be described first, and then, using the electromagnetic induction heating cooker, the egg half-cooking / maturation process of the present invention will be described.

First, a general cooking process will be described. The AC power source AC is rectified to the pulsating DC voltage through the first rectifying means 100 and then smoothed through the choke coil 101a of the smoothing means 101. The power source AC drops again through the transformer 108 and is converted into a DC voltage through the second rectifying means 109 and applied to the operating voltage of the system control means 112.

The pulsating DC voltage smoothed by the smoothing means 101 is input to the inverter means 102.

At this time, when the user selects the cooking button through the key operation means 111 after supplying rice and the appropriate amount of water to the metal pan 110 to perform cooking, the system control means 112 displays the cooking function. In addition to zooming through the means 125, the reference level value of the temperature (102 ° C.) suitable for the cooking process is input to the negative feedback amplifying means 106.

On the other hand, the base current of the inverter means 102 to the switching element TR1 corresponds to the switching driving means in response to the pulse width modulation control signal derived from the pulse width modulation signal generating means 103b of the inverter control means 103. Since it is driven through 104, the working coil 102a and the resonant capacitor C2 are brought into a continuous resonance state by the pulsating DC voltage input from the smoothing means 101.

Accordingly, a large resonance current flows through the working coil 102a.

As a result, eddy currents are induced in the metal fan 110 to be heated due to the electromagnetic induction effect due to the magnetic field generated from the working coil 102. As a result, the metal fan 110 is heated and the food in the metal fan 110 is heated. It is heated to the desired heating temperature.

At this time, the resonant voltage generated by the working coil 102a and the resonant capacitor C2 of the inverter means 102 is detected by the voltage detecting means 103a of the inverter control means 103 and the pulse width modulated signal generating means 103b. By controlling the triangular wave generating means (103b1) of the) to determine the triangular wave generation time.

The triangular wave generating means 103b1 generates a triangular wave signal for determining conduction and breaking time of the switching element TR1 of the inverter means 102 according to the voltage detected by the voltage detecting means 103a. It is input to the inverting terminal (-).

On the other hand, when the current detecting means 105 detects the current from the input AC power source AC and inputs it to the inverting terminal of the negative feedback amplifying means 106, the negative feedback amplifying means 106 is detected by the current detecting means 105. The comparison deviation value to be input to the integrating means 107 in comparison with the reference voltage level corresponding to the cooking process of the system control means 112 driven by the voltage level and the driving voltage of the second rectifying means 109. do.

The integrating means 107 integrates the input comparison deviation value to determine the conduction time of the switching element TR1 of the inverter means 102 via the diode D2, and the non-inverting terminal of the comparing means 103b2. Will be entered in (+).

Accordingly, the comparing means 103b2 compares the triangular pulse of the triangular wave generating means 103b1 with the integral value of the integrating means 107 to determine the conduction and breaking time of the switching element TR1 of the inverter means 102. By inputting and driving the width modulation signal to the switching driving means 104, the switching element TR1 of the inverter means 102 is turned on and off to effectively drive the working coil 102a to provide food in the metal pan 110. The cooking process is performed while heating.

As described above, in the state where the cooking process is performed while the metal fan 110 is heated by the working coil 102a of the inverter means 102, the system control means 112 has a lower temperature sensing member installed under the metal fan 110. The current temperature of the metal fan 110 is measured by the reference numeral 123 and the analog / digital conversion means 124 and compared with the set temperature (120 ° C.).

At this time, when the temperature measured by the lower temperature sensing member 123 reaches the set temperature (120 ° C), it is determined that the cooking process is completed and gives a reference level value of the temperature required for the moxibustion process to perform the moxibustion process. .

Accordingly, as described above, the switching element of the inverter means 102 by the pulse width modulated signal through the negative feedback amplifier means 106, the integration means 107, the inverter drive means 103 and the switching drive means 104 ( The conduction time of TR1) is shortened, and the temperature of the metal pan 110 is also gradually lowered to perform the moxibustion process.

Thereafter, when the moxibustion process is completed, the warming is performed according to whether the user selects the warming button. At this time, the side heater 118 and the upper heater 116 are provided through the side heater driving unit 117 and the upper heater driving unit 115. Proper temperature while periodically reading the temperature detected by the upper temperature sensing member 120 and the side temperature sensing member 122 through the first and second analog / digital conversion means 119 and 121 It is kept at (70 ° C).

As such, in order to soften or mature eggs through an electromagnetic induction heating cooker having a cooking function, first, as shown in FIG. 1, a user puts eggs into the metal pan 110 regardless of the quantity and supplies an appropriate amount of water.

In such a state, when the user selects and presses an egg soft or mature key through the key operating means 111 (ST1), the system control means 112 initially performs a primary heating process (ST100) as shown in FIG. Through the fan drive means 113 to drive the cooling fan 114 installed inside the rice cooker 126 for a set time (t1) to the internal temperature of the metal pan 110, that is, the rice cooker 126 in a parallel state It is maintained (ST2).

After a predetermined time t1 has elapsed, the system control means 112 is configured in the inverter means 102 to maintain the internal temperature of the metal fan 110 at 91 ° C., which is the set temperature T. The duty ratio of the conduction and interruption time of the switching element TR1 is inputted to the negative feedback amplifying means 106 at 16 levels of full power, that is, 15: 1 (ST3).

Accordingly, the negative feedback amplifying means 106 compares the voltage level detected by the current detecting means 105 with the duty ratio value of the switching element TR1 input by the system control means 112 as described above. The comparison deviation value is input to the integrating means 107.

The integrating means 107 integrates the input comparison deviation value to determine the conduction time of the switching element TR1 of the inverter means 102 via the diode D2, and the non-inverting terminal of the comparing means 103b2. Will be entered in (+).

Accordingly, the comparing means 103b2 compares the triangular pulse of the triangular wave generating means 103b1 with the integral value of the integrating means 107 to determine the conduction and breaking time of the switching element TR1 of the inverter means 102. By inputting and driving the width modulation signal to the switching driving means 104, the switching element TR1 of the inverter means 102 is turned on for 15 seconds, cut off for 1 second, and then turned on again for 15 seconds. As the conducting and blocking is performed, the working coil 102a is driven at the maximum power to heat the metal fan 110, thereby primarily heating the eggs of the metal fan 110.

As such, while heating the eggs in the metal pan 110 primarily, the system control means 112 includes a lower temperature sensing member 123 and a third analog / digital converting means 124 installed below the metal pan 110. Detects the temperature in the detected metal fan 110 through) and compares the detected temperature with the set temperature T (ST4).

The internal temperature of the metal fan 110 detected by the lower temperature sensing member 123 and the third analog / digital converting means 124 as a result of the comparison in the step ST4 is set temperature T, that is, 91 ° C. If not reached, the switching element TR1 of the inverter means 102 is controlled until the set temperature T is reached in the same manner as described above (ST3), and when the set temperature T is reached, the two self-heating process ( Through ST101, the mode set through the key operation means 111 is searched for whether it is soft or mature (ST5).

If the result of the search in the step ST5 is the soft cooking mode, the timer in the self is operated for a set time (t2 = 4 minutes) (ST6), and the metal fan 110 with the same full power during the set time (t2). ) Is heated secondary.

In such a state, the system control means 112 searches whether the set time t2 has elapsed through the internal timer (ST7), and if the set time t2 has elapsed, shuts down the operation of the inverter means 102. And complete the soft.

This allows the whites to fully ripen and the yellows to be soft-boiled in optimum conditions regardless of the number of eggs in four minutes.

If the result of the search in step ST6 is a mature mode, the timer in the self is operated for a set time (t3 = 6 minutes) (ST8), and at the same time, the metal fan is operated with the same full power during the set time (t3). Second heat (110).

The heating is performed at the same power as in the half-cooking mode, so that the set time (t3) of the ripening should be kept longer, so that the white and the yellow may be ripe.

As described above, while the secondary heating is performed at full power through the working coil 102a of the inverter means 102 for the set time t3, the system control means 112 uses the internal timer to set the set time t3. If the set time t3 has elapsed by searching whether the elapsed time has elapsed (ST9), the operation of the inverter means 102 is interrupted and the maturity is completed.

In this way, the whites and the masturbates are matured in optimum conditions regardless of the number of eggs in 6 minutes.

As described in detail above, according to the present invention, regardless of the number of eggs to be boiled by giving a duty ratio without simply controlling the inverter means by using a general electromagnetic induction heating rice cooker and the most suitable temperature and each By setting the time and heating the eggs during that time, there is an effect that the ripening or ripening is achieved in the optimal state desired by the user.

Claims (4)

When the eggs are cooked and matured, the primary heating process is to maintain the temperature in the metal pan in parallel with the outside temperature for a predetermined time and heat the temperature in the metal pan until the set temperature is reached. When the temperature reaches the set temperature, the time is set differently according to the mode of ripening or ripening of the eggs set by the key operation means, and the heating process of the metal pan during the set time is performed. How to control egg half-cooking / cooking of electromagnetic induction cooker. The method according to claim 1, wherein the set temperature of the primary heating process is 91 ° C. The method according to claim 1, wherein the heating time of the half-boiled egg during the second heating process is heated at 91 ° C. for 4 minutes. The method according to claim 1, wherein the heating time during the ripening of eggs in the secondary heating process is heated at 91 ° C. for 6 minutes.