JPH07148068A - Preparation of hot drink with scorched rice,by rice cooker - Google Patents

Abstract

PURPOSE: To automatically manufacture without boiling up to overflow by intermittently turning on and off a heater to boil scorched rice hot water in an inner container according to course selection. CONSTITUTION: When a scorched hot water course is selected, the lower end of an inner container 1 is heated by a rice boiling heating means 5, and a target temperature T2 is set to a temperature before the scorched rice hot water is boiled. When the sensed temperature of a lower part temperature sensor means 12 reaches the target temperature T2, the continuous heating of the rice boiling heating means 5 is interrupted. The target temperature sensed by an upper temperature sensor means 7 is lower than the target temperature T2 by designated temperature ΔT. This is reached by continuously repeating the on-off operation of the rice boiling heating means 25 during designated time after the target temperature T2 is sensed by the lower temperature sensor means 12. That is, a quick rising curve is drawn until the temperature of the inner container 1 lower part reaches the target temperature T 2, and after that, a gentle rising curve is drawn, and to first reach the manufacturing point, the on-off time of the rice boiling heating means 5 is automatically set and held until the end time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an additional function of producing a burnt water to a rice cooker which has a unique function of cooking and keeping heat so that the burnt water can be automatically produced when necessary. The present invention relates to a method for producing burnt water for a rice cooker.

[0002]

2. Description of the Related Art A general rice cooker will be briefly described below with reference to FIG.

With the predetermined amount of rice and water required by the user accommodated in the inner container 1, the inner container 1 was housed in the outer container 2, placed on the heating plate 3, and the lid 4 was closed. After that, when a switch (not shown) is pressed, electricity is conducted to the heating means 5 for cooking rice to heat the heating plate 3. Thereby, rice is cooked while the inner container 1 is heated.

After that, when the temperature of the inner container 1 reaches a predetermined temperature, the rice is steamed for a predetermined time while the heat quantity of the heating plate 3 is reduced by a certain amount by the control of a control means (not shown). After a predetermined time, the heat retaining operation is started to keep the heat retaining state.

By the way, it is possible to manufacture the burnt water by utilizing the rice cooking function of such an ordinary rice cooker, but in this case, the following problems are induced.

In other words, after the rice is cooked, when water for a predetermined number of people is put in the inner container 1 in a state where some rice remains, and immediately after the rice is cooked, the rice remains after the rice is cooked. Due to the high temperature in the inner container 1, the rice cooker malfunctions during the steaming process of rice, and it is impossible to supply appropriate power to the heating means 5 for cooking rice.

In other words, when the rice 4 is opened by opening the lid 4 of the rice cooker at the end of rice cooking, the temperature in the inner container 1 is lowered to a constant temperature, and therefore, when the burnt water is manufactured again. Although the heating means 5 for cooking rice should heat the inner container 1 by generating the amount of heat required for the production of the burnt water, the inner plate 1 is still in a state where the heating plate 3 is not yet cooled.
The temperature sensed by the lower temperature sensor means 12 for sensing the temperature of the lower surface of the rice cooker keeps the sensed temperature at the end of rice cooking almost as it is, and thus the rice cooker malfunctions during the rice steaming process and the inside of the inner container 1 is affected. It is controlled not to generate enough heat to cover the lowered temperature.

[0008] As a result, there is a case where the burnt water is not satisfactorily manufactured, and even if the burnt water is manufactured, proper temperature control is not performed, so the burnt water overflows through the steam holes of the burnt water. It happened.

[0009]

SUMMARY OF THE INVENTION Therefore, the present invention has been made in view of the above-mentioned problems, and automatically adds the manufacturing function of burnt hot water to the rice cooking function of a normal rice cooker and automatically. An object of the present invention is to provide a method for producing a burnt water for a rice cooker capable of producing a burnt water.

[0010]

[Means for Solving the Problems] A method for producing a burnt hot water for a rice cooker according to the present invention for achieving the above-mentioned object,
A first step in which the user selects a desired course, a second step in which the lower surface temperature of the inner container and the inner temperature are heated to reach a predetermined temperature based on the selection of the course, and the predetermined temperature is reached The heater is intermittently turned on and off to boil the burnt water in the internal container, and the boiling state of the burnt water in the internal container is maintained until the end time, and then burnt. And a fourth step of ending the hot water manufacturing operation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 6 is a front cross-sectional view of a rice cooker to which this embodiment can be applied, and FIG. 1 is a control block diagram for producing a boiling water according to this embodiment.

6 and 1, heating means 5 for cooking rice
Are embedded in the heating plate 3. The key means 8 is a manual operation automatic return type switch which is attached to an appropriate position of the outer case 6 and operates only when operated. Such a key means 8 is provided with a rice cooking course, a boiling water course, a heat retention course, and the like. Further, reference numeral 7 is an upper temperature sensor means for detecting the internal temperature of the inner container 1, which is embedded at an appropriate position inside the lid 4 of a normal rice cooker (for example, inside an aluminum material inside the lid) and senses it. The necessary electric wires are connected to the control means 10 through the inside of the lid 4 so that the temperature value is input to the control means 10.

An upper auxiliary heating means 9 is embedded in the aluminum material inside the lid 4 so as to be used as a heating source when necessary.
Is configured to be controlled by the control means 10. In addition, the side auxiliary heating means 11 is embedded in the body of the side surface of the rice cooker so that it can be used as an auxiliary heat source when necessary, and a circuit is similarly configured to be controlled by the control means 10.

On the other hand, the heating means 5 for cooking rice, the upper auxiliary heating means 9, and the side auxiliary heating means 11 are circular or rod-shaped heaters, which are higher than those of the normal rice heating means 5. The side auxiliary heating means 11 has a small rated capacity.

When the upper temperature sensor means 7, the lower temperature sensor means 12, the upper auxiliary heating means 9 and the side auxiliary heating means 11 are arranged in this manner, a control system as shown in FIG. 1 is constructed.

In other words, when manufacturing burnt water or cooking rice,
The lower surface (floor surface) and the internal temperature of the inner container 1 heated by the heating means 5 for cooking rice are respectively lower temperature sensor means 1
2 and the upper temperature sensor means 7, and the sensed value is input to the control means 10. This sensed value is converted into digital data by the A / D conversion means built in the control means 10 and compared with the temperature judgment reference data program stored in the memory means in the control means 10.

The control value based on the temperature determined by the comparison result is converted into an analog value by the D / A conversion means 14 and sent to the heater driving means 15, so that the heating means 5 for cooking rice and the side auxiliary heating. The means 11 or the upper auxiliary heating means 9 is drive-controlled.

On the other hand, the control means 10 includes a ROM storing the entire control program, a RAM storing the temperature sensor sensing value and the heater control value, and a timer for counting the heating time by the heater or the heater off time. Means 16 and are incorporated.

Further, on the rice cooker, a signal (eg, rice cooked, hot water, heat retention, etc.) input to the control means 10 by the key means 8 and read is displayed by a light emitting diode or the like for external confirmation. Display means 17 is provided.

On the other hand, the respective temperatures b and a in the lower portion and the inner portion of the inner container 1 heated by the driving of the heating means 5 for the rice cooker over time are shown by the rising curves in FIG.

In the present embodiment, in order to realize the method for producing a burnt hot water, the heating means 5 for cooking rice is continuously heated without turning off the heating means 5 for heating the inner container 1 normally. And the on state is maintained (inner container 1
For the time being, ΔT is detected from the temperature Ts sensed by the lower temperature sensor means 12 to be turned off first and the sensed temperature T2 of the upper temperature sensor means 7 to be turned off secondarily. The limit temperature T at which there is almost no further temperature rise when the temperature is T1 lower than the temperature
1 (boiling temperature) is stored in the memory means of the control means 10.

The memory means in the control means 10 senses the input power supply voltage and inputs a voltage higher or lower than the reference power supply voltage as the power supply voltage changes. Even when voltage is input,
The heater on / off time is automatically set so that the various operations are completed in a state where the boiling water does not overflow by controlling this properly (for example, a voltage below the reference power supply voltage is input. Then, a program for increasing the heater on time and decreasing the off time is stored.

Next, the main operation of the method for producing a burnt water according to this embodiment will be described in detail with reference to the flow chart shown in FIG.

As shown in FIG. 2, first, in step S10.
At 0, for example, the course, that is, the burnt water course in this embodiment, is selected through the key means 8 installed outside the body of the rice cooker. When the control means 10 senses that the burnt water course has been selected, in step S200,
The control means 10 generates a drive signal to the rice-cooking heating means 5 to drive the rice-cooking heating means 5 (at this time, the upper and side auxiliary heating means 9 and 11 are also driven, or a selective driving method is also available. However, this is a problem in programming), the heating is performed until the lower temperature of the inner container 1 reaches a predetermined temperature.

At this time, it goes without saying that the inner container 1 contains a predetermined amount of water desired by the user and other materials (materials required for the production of the burnt water).

When the temperature inside the inner container 1 reaches a predetermined temperature, the heating operation until the boiling water inside the inner container 1 is boiled is controlled by the control means 10 in step S300.

That is, the power of the heating means 5 for cooking rice is controlled step by step (described in detail in Example 1) so that the value sensed by the upper temperature sensor means 7 is not greatly affected.
The control means 10 determines whether or not the sensed value of the upper temperature sensor means 7 has reached a predetermined temperature (at this time, the heating means 5 for cooking rice is controlled to be turned on and off at predetermined time intervals), At this time, the input power supply voltage is also sensed, and the end time is set by the control means 10 based on the heater on / off time based on the sensed value. Then, after the predetermined time has elapsed with the inside of the inner container 1 being in the state of manufacturing the burnt water, the burnt water manufacturing course operation is ended.

As a result, in step S400, the control means 10 controls the heating to the set end time, and then the operation is completed.

FIG. 3 and FIG. 5 are flowcharts showing the detailed operation sequence of the method for producing a burnt water according to the present invention.

Here, for the sake of convenience, one method of manufacturing the burnt water from a state in which water and the burnt water material are first stored in the inner container 1 (Example 1, FIG. 3) and the inner container 1 after completion of cooking rice
The method will be described separately with respect to another method (Example 2, FIG. 5) in which the charcoal formed on the floor surface is used.

(Embodiment 1) In step S1, a power supply voltage necessary for manufacturing a burnt water is input. At this time, the heat inside the outer container 2 is kept in a state where the predetermined number of cold water required by the user and other materials required for manufacturing the burnt water are stored in the inner container 1 as shown in FIG. It is placed on the plate 3 and then the lid 4 is closed and the power supply voltage is input (at this time, the power supply voltage is applied by inserting the plug into a wall outlet or the like where household AC voltage is induced).

In this way, with the power supply voltage being input, in step S2, the control means 10 determines whether or not the user has selected the burnt water course through the key means 8 installed outside the body of the rice cooker. .

That is, as shown in FIG. 1, when a burnt water course selection signal by a key is input to the input terminal I1 of the control means 10 through the key means 8, this signal is stored in the control means 10A. The signal is converted into a digital signal by the / D converter, which is read by the program stored in the ROM, and it is determined whether or not the burnt water course has been selected.

At this time, if the burnt water course has not been selected (NO), the general course at step S12,
For example, a course of only cooking rice is performed, or another operation is performed.

As a result of the determination in step S2, if it is determined that the burnt water course has been selected (YES), the control means 10 sends a heater driving signal to the rice cooking heating means 5 (step S3). At this time, the heater drive signal from the control means 10 is converted into an analog signal by the D / A conversion means 14 and sent to the heater drive means 15 (hereinafter, the heater drive signal is an ON signal and the heater drive stop signal is an OFF signal. That). The lower end of the inner container 1 is heated by causing a predetermined amount of heat to be generated by the ON signal. At the same time, the lower temperature sensor means 12 and the upper temperature sensor means 7 are turned on (step S4).

As the lower end of the inner container 1 is heated, the temperature inside the inner container 1 gradually rises, and the values sensed by the lower temperature sensor means 12 and the upper temperature sensor means 7 change accordingly. The sensed values of the lower temperature sensor means 12 and the upper temperature sensor means 7 are input through the input terminals I2 and I3 of the control means 10 and converted into digital data. As a result, the target temperature (T2 in FIG. 4) previously stored by the control means 10 and the lower temperature sensor means 1
The magnitude of the detected temperature of 2 (referred to as Ts for convenience) is determined (step S5). That is, it is determined whether the sensed temperature Ts has reached the target temperature T2 (Ts = T2).

On the other hand, the target temperature T2, as shown in FIG. 4, is the temperature before the boiling of the burnt water inside the inner container 1 for a predetermined time. The reason why the target temperature T2 is set to the temperature before boiling the boiling water in this way is that when the heating operation of the heating means 5 for cooking rice is continuously performed for a predetermined time, the boiling water is produced (steam hole). Since the continuous heating of the cooking means 5 for cooking rice is interrupted and the heating means 5 for cooking rice is intermittently turned on and off at predetermined time intervals, the boiling water overflows. This is so that the product can be manufactured smoothly without coming out.

When the sensed temperature (lower temperature) Ts cannot reach the target temperature T2 (NO) as a result of the determination in step S5, the process returns to step S3 to turn on the rice cooking heating means 5. The heating operation of the inner container 1 is maintained, and the operation of determining whether the sensed temperature Ts is higher than the target temperature T2 is repeated.

When the sensed temperature Ts reaches the target temperature T2 (when YES), the internal temperature a of the inner container 1 is first heated by the heating means 5 for cooking rice under the control of the control means 10. Will be prevented from rising proportionally. That is, as described above, the target temperature T2 is lower than the temperature at which the boiling water in the inner container 1 boils, and the drive of the rice cooking heating means 5 is controlled after the target temperature T2 is reached. The inner container 1 is heated while repeating the on / off operation at predetermined time intervals (step S
6).

The stepwise control of the heating means 5 for cooking rice (step S6) is, for example, as shown in FIG. 4, a temperature control operation from the time when the temperature of the lower end of the inner container 1 reaches the target temperature T2. Then, for example, in a cycle of 30 seconds, 70% of the rated heat amount of the heating means for cooking rice 5 is generated during the first 30 seconds, and the operation of turning off the heating means for cooking rice 5 is repeated during the subsequent 30 seconds. To do it.

Even in this case, the inner temperature a of the inner container 1 is gradually increased in the end, so that the upper temperature sensor means 7 senses the temperature of the boiling water in the inner container 1 at the boiling point. Come to do.

In such a state, the control means 10 determines in step S7 whether the temperature sensed by the upper temperature sensor means 7 (Te for convenience) has reached the target temperature T1 (Te = T1). That is, as shown in FIG. 4, it is determined whether the temperature Te sensed by the upper temperature sensor means 7 has reached the target temperature T1.

As can be seen from FIG. 4, the target temperature T1
Is a temperature lower than the target temperature T2 by a predetermined temperature ΔT. This is lower than the lower temperature b of the inner container 1 (more specifically, the floor surface temperature Ts of the inner container 1), that is, the inner temperature a of the inner container 1, that is, the lid portion. This means that the temperature Te is lower by a predetermined temperature ΔT.

The temperature difference ΔT is about 40 to 50 ° C., and the sensed temperature Te = T1 sensed by the upper temperature sensor means 7 at the time of boiling the boiling water in the inner container 1 is 1
If it is 00 ° C, the sensed temperature Ts sensed by the lower temperature sensor means 12 (that is, the actual lower end temperature of the inner container) is about 140 to 150 ° C.

On the other hand, the target temperature T1 sensed by the upper temperature sensor means 7 is continuously repeated on and off operations of the rice cooking heating means 5 for a predetermined time after the lower temperature sensor means 12 senses the target temperature T2. After (in FIG. 4, the boiling portion P
2). As shown in FIG. 4, the internal temperature of the inner cloth container 1 draws a fast rising curve until the temperature of the lower part of the inner container 1 reaches the target temperature T2. This is because, after the temperature reaches the temperature T2, the internal temperature of the inner container 1 draws a gentle rising curve by controlling the driving power of the rice cooking heating means 5 step by step.

If Te detected by the upper temperature sensor means 7 does not reach the target temperature T1 (NO) as a result of the determination in step S7, the process returns to step S6, and the heating means 5 for cooking rice is operated. When another power control operation is repeated and the sensed temperature Te sensed by the upper temperature sensor means 7 reaches the target temperature T1 (YES), the process proceeds to step S8 to detect the input power supply voltage. . That is, since the burnt water in the inner container 1 has reached the manufacturing point, the on / off time of the rice cooking heating means 5 in step S9 is automatically set, but the input power supply voltage is sensed and its fluctuation is detected. This is because it is automatically set depending on how.

This is not only to set the on / off time of the heating means 5 for cooking rice in order to keep the boiling state of the hot water in the inner container 1 constant, but also to set the input voltage. This is because the on / off time should also be variably set depending on the level of.

Then, in step S10, the drive end time of the heating means 5 for cooking rice, that is, the operation end time of the burnt water manufacturing course is automatically set.

As described above, in step S11 with the end time set, it is determined whether or not the end time set in step S10 has been reached.

If the result of this determination is that the end time has been reached (YES), then the manufacturing operation of the burnt water intended by this embodiment has ended, so all operations are ended.

(Embodiment 2) In the above-mentioned Embodiment 1, the manufacturing operation of the burnt water is not performed in the state where the cooked rice is finished, but
The present invention relates to a method for producing burnt water in a state where the water required for a predetermined number of people and other materials required for producing burnt water are stored in the inner container 1, but after the completion of cooking rice, the rice in the inner container 1 is cooked. After being called, the burnt water can be manufactured by utilizing the burnt substance attached to the floor surface of the inner container 1. This manufacturing will be described with reference to FIG.

First, when the power is turned on in step S1 and the rice cooking and burnt water course is selected in step S2 (when YES), the heater driving means 15 and the lower temperature sensor means 12 in steps S3 and S4. And the upper temperature sensor means 7 is turned on to cook rice. During this rice cooking,
Detecting the temperature inside and below the inner container 1, step S5
Then, it is determined whether or not the sensed temperature Ts of the lower portion of the inner container 1 sensed by the lower temperature sensor means 12 and the target temperature T2 are the same.

As a result of this judgment, the sensed temperature Ts is the target temperature T
If the number reaches 2 (YES), step S6.
The heating of the cooking means 5 for rice is controlled by, and the internal container 1 is continuously heated while repeating the on / off operation for each predetermined time. In a state similar to this, in step S7, the magnitude of the sensed temperature Te of the upper temperature sensor means 7 and the target temperature T1 is determined.

As a result of this judgment, the target temperature T1 and the sensed temperature T
If e is the same (YES), steaming is performed in step S8 while the heating amount of the heating means 5 for cooking rice is reduced by a certain amount by the control means 10.

At this time, the steaming time should be different from that when only normal rice is cooked, and the burnt used as a material for the burnt hot water should be attached to the floor surface of the inner container 1. Therefore, it will be slightly longer than usual time.

With such a steaming operation, the charcoal adheres to the floor surface of the inner container 1 in step S9, and in step S10, water for a predetermined number of people required to produce the burnt water is prepared. Put in. At this time, since the lid is opened and cold water is put in to cover the rice, the inner container 1
Although the predetermined internal temperature is lowered from the time when the sensed temperature Te reaches the target temperature T1, a state in which hot air of a predetermined temperature remains at the lower end and inside of the internal container 1 is maintained.
Along with this, as in the first embodiment, the time is shorter than the time for producing the burnt water in a state where water and other materials necessary for producing the burnt water are first contained in the inner container 1.

Thereafter, the operations of steps S11 to S17, which are performed while operating the rice cooker heating means 5 again to heat the inner container, correspond to steps S5 to S11 of FIG. 3 corresponding to the first embodiment. Omit the explanation.

On the other hand, in the above step S2, the rice cooking and boiling water courses are bundled as one function, but only the rice cooking course is performed, and it is also possible to select the burning rice course at the next stage of step S10. .

[0060]

As described above, according to the method for producing a burnt water for a rice cooker according to the present invention, it is possible to automatically add a burnt water producing function to a rice cooker function of an ordinary rice cooker without overflowing. It has the advantage of being able to produce burnt water.

[Brief description of drawings]

FIG. 1 is a control block diagram of a burnt water manufacturing apparatus applicable to the present invention.

FIG. 2 is a flowchart showing a burnt hot water manufacturing operation sequence according to the present invention.

FIG. 3 is a flowchart showing a more detailed operation sequence than the operation sequence shown in FIG.

FIG. 4 is a graph of a sensed temperature change of a temperature sensor applicable to the present invention.

FIG. 5 is a flowchart showing a burnt water manufacturing operation sequence according to another embodiment different from that shown in FIG.

FIG. 6 is a front sectional view of a rice cooker applicable to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 inner container 2 outer container 3 hot plate 4 lid 5 heating means for cooking rice 6 outer case 7 upper temperature sensor means 8 key means 9 upper auxiliary heating means 10 control means 11 side auxiliary heating means 12 lower temperature sensor means 14 D / A Conversion means 15 heater driving means 16 timer means 17 display means

Claims (12)

[Claims] 1. A first step in which a user selects a desired course, and a second step in which, based on the selection of the course, the lower surface temperature of the internal container and the internal temperature are heated until a predetermined temperature is reached, When the temperature reaches the predetermined temperature, the heater is intermittently turned on and off to boil the burnt water in the internal container, and the boiling state of the burnt water in the internal container is maintained until the end time. And a fourth step of terminating the manufacturing operation of the burnt water, the method for manufacturing the burnt water of a rice cooker. 2. The power input step of causing the first container to be placed on a hot plate in an outer container in a state where water and materials required for producing the burnt water are contained in the inner container and input a power supply voltage. The method for producing a burnt water according to claim 1, further comprising: and a burnt water course selecting step for selecting a course for the burnt water. 3. The second step comprises a step of driving the heating means for cooking rice to turn on the heating means for cooking rice so as to heat the lower end of the inner container by selecting the burnt water, the lower end of the heated inner container, and From the step of driving the temperature sensor means for sensing the internal temperature and turning on the lower temperature sensor means, and the step of comparing the temperature for judging whether the lower end temperature of the inner container has reached the target temperature by the heating of the heating means for cooking rice. The method for producing a burnt water according to claim 1, wherein the method is configured. 4. The heating step for turning on and off the heating means for cooking rice, wherein the heating means for cooking rice is intermittently turned on and off when the temperature of the lower end of the inner container reaches a target temperature. , Turning on the heating means for cooking rice,
The method of manufacturing a burnt water according to claim 1, further comprising a temperature comparison step of determining whether or not the internal temperature of the internal container has reached a target temperature as the drive is turned off. 5. The fourth step comprises a power source voltage sensing step of sensing a power source voltage when the temperature in the inner container reaches a target temperature, and turning on the cooking means for cooking rice according to the sensed power source voltage. , A heating means for cooking rice for variably setting an off time, an on / off time setting step, and an end time setting step for setting an end time so that the boiling state of the boiling water in the internal container is maintained for a predetermined time, 2. The method for producing a burnt water according to claim 1, further comprising the step of finishing the production of the burnt hot water, which comprises boiling the burnt hot water until the end time and ending the production of the burnt hot water. 6. The burnt food according to claim 3, wherein when the temperature of the lower end of the inner container does not reach the target temperature in the temperature comparing step, the heating means for cooking rice is kept in the ON state. Hot water manufacturing method. 7. The method for producing a burnt water according to claim 6, wherein the target temperature is set and stored in the memory means of the control means at a temperature lower than the production temperature. 8. The rice cooking heating means is repeatedly turned on and off when the internal temperature of the internal container has not reached the target temperature in the temperature comparison step. A method of manufacturing a burnt water. 9. The method for producing a burnt water according to claim 8, wherein the target temperature is a temperature at which the burnt water inside the inner container boils. 10. The method of claim 8, wherein the internal temperature of the internal container is sensed by an upper temperature sensor. 11. The rice cooking heating means ON / OFF time setting step increases the ON time when the power supply voltage is lower than a reference voltage preset and stored in the control means, and increases the ON time when the power supply voltage is higher than the reference voltage. The method for producing a burnt water according to claim 5, wherein the on / off time of the heating means for cooking rice is set by a method of reducing the on time. 12. The end time for keeping the boiling water boiling state for a predetermined time is set according to the amount of the boiling water stored in the inner container. Method for manufacturing burnt water.