JPH0759224B2 - How to cook rice in a rice cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an improvement in a rice cooking method using a rice cooker.

[Prior Art] Rice cookers, which heat and cook rice using electric power, have become widespread nationwide and have become an indispensable appliance in the kitchen of each household.

Figure 2 is a diagram showing the rice cooking process after the start when cooking rice using the rice cooker, first of all, the preheating process for sufficiently supplying water to the rice, and then the boiling water boiling process. The rice is cooked through the purging process performed by stopping the heater, and then the heat retaining process is performed.

The operation of each of the above steps is automatically performed by various control devices including sensors such as a temperature sensor provided in the rice cooker. For example, in the preheating process, the output of the heater is reduced to a temperature at which rice does not gelatinize (for example, 50 ° C.), and after a lapse of a predetermined time T1, the process moves to a rice cooking process in which rice is cooked by high heat. In the rice cooking process, the water inside the kettle continues to boil and the temperature is maintained at 100 ° C. When all the water has boiled, the temperature in the inner kettle rises sharply, but when the temperature sensor detects the predetermined temperature θ, the heater is stopped and the unevenness process is started. Although the heater is stopped as described above in this purging process, the heater stopped during the purging process is turned on for a predetermined time T3 in order to keep the cooked rice temperature at a high temperature and remove excess water. It is common to cook so-called twice. After a lapse of a predetermined time T2 due to the unevenness, the process proceeds to the heat retention step of heating with the lid heater or the body heater.

By the way, the cooked rice cooked in the above process is always cooked in almost the same state, which is one of the features of the rice cooker. This is because the rice cooked state that everyone likes is studied and the specifications are decided to cook to the taste. However, the taste of rice cookers is not always the same, and some people like soft rice and some prefer savory rice with charcoal. Therefore, a rice cooker that is configured to change the rice cooked state according to the preference of the user of the rice cooker has appeared.

FIG. 3 is a circuit diagram of a rice cooker control device capable of selecting the above-mentioned rice cooking states, 1 is a microcomputer, 2 is a timer, 3
Is a comparison circuit, 4 is a relay control circuit, 5 is a memory, 6 is a menu switch, 7 is a timer start switch, 8 is a transistor, 9 is a relay circuit, 10 is a contact, 11 is a power supply, 12
Is a heater and 13 is a rice cooking switch.

In the memory 5 shown in the figure, a program for cooking rice in a cooked state, that is, a standard state preferred by many people, and a program for cooking in a savory cooked state with charred rice are stored, and the menu switch 6 is used. When it is opened, the rice is cooked in the standard state, and when the switch 6 is closed, the rice is cooked in the fragrant state.

Note that there are mainly two factors that determine the rice cooking state, one is the temperature θ at the time of shifting from the rice cooking process to the muramura process in FIG. 2, and the other is the heater heating time T3 in the muramura process. When θ is 115 ° C and T3 is 30 seconds, the rice is in a standard state, and when θ is 130 ° C and T3 is 60 seconds, the rice is savory. When the menu switch 6 is OFF, the cooking condition is the standard condition, and when it is ON, the savory condition is cooked.

FIG. 4 is a flow chart of the rice cooking operation of the rice cooker capable of selecting the rice cooking state. After the start (S1), the ON / OFF of the menu switch is judged (S2). If it is OFF, the low heater is energized with a weak output (S3), and the preheating process starts. Then, it is determined whether or not the elapsed time after energization reaches T1 (S4), and when it reaches, the heater is energized with a strong output (S5), and the rice cooking process is started. All the water in the cooked rice boils and the cooked rice temperature rises to 115 ° C.
(S6), the power to the heater is stopped (S7),
When the temperature of the cooked rice falls below 100 ° C during the wiping process (S8), the heater is energized (S9) and the energization time is 30
When the second is reached (S10), the power to the heater is stopped (S1
1). Further, when the time of the unevenness reaches a predetermined T3, the heat retention process starts (S23). Now the cooked rice in standard condition is cooked.

When the menu switch is ON after the start, that is, when cooked to a fragrant state, the preheating and rice cooking processes are the same as in the standard state above, but the cooked rice temperature θ during the rice cooking process is 13
When the temperature reaches 0 ° C (S16), the power to the heater is stopped (S1
7) Go to the Murashi process. Cook twice in the purple process (S1
8) and (S19) are the same as in the standard state,
The energization time T3 for cooking twice is 60 seconds (S20), which is twice the 30 seconds in the standard state. After the Murashi process, the same heat retention process as in the standard state is performed.

Some rice cookers include a timer in the above control device. If you set a reservation timer time using this timer, cooked rice will be cooked automatically at a predetermined time. If it is turned on, it is convenient that the cooked rice at breakfast can be served on the table.

[Problems to be solved by the invention] By the way, the conventional rice cooker that can select the amount of cooking is a convenient rice cooker as it is, but if the menu switch is selected to ON / OFF and rice cooking is started, Reselection of is impossible. Therefore, even if there is a case where the user wants to change the rice-cooking state after starting the rice-cooking, the rice-cooking state cannot be changed, which has been a problem.

The present invention has been made to solve the problems of the above conventional rice cookers, and even after the start of rice cooking, the rice cooked state can be changed before reaching the first rice cooked completion temperature,
Further, in a rice cooker provided with a timer, it is intended to provide a rice cooker method of a rice cooker capable of changing the rice cooked state when the timer is in operation.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a starting means for starting a rice cooking process, and a standard rice completion temperature and a second cooking time for cooking rice.
A rice cooking menu comprising a rice cooking menu and a second rice cooking menu in which the rice is cooked at a temperature higher than the rice cooking completion temperature of the first rice cooking menu twice for a longer cooking time, and a storage means storing the rice cooking menu, A selection means for selecting the rice cooking menu is provided to start the rice cooking process and the first step.
The rice-cooking method of the rice-cooking device which selects the rice-cooking menu by the above-mentioned selection means was adopted during the rice-cooking completion temperature.

[Operation] Since the rice cooking control program of the rice cooker is configured as described above, it is possible to change the rice cooking state even after starting the rice cooking, and to provide a convenient rice cooking method for the rice cooker.

[Embodiment of the Invention] FIG. 1 is a flowchart of a control program for a rice cooker according to the present invention. After starting the rice cooking (S31), it is judged whether the menu switch is ON or OFF (S32), and if it is OFF, the bottom heater is energized with a weak output (S33) to start the preheating process.
Then, it is determined whether or not the elapsed time after energization has reached T1 (S34), and if it has reached, the heater is energized with a strong output (S35), and the rice cooking process is started. When all the water in the cooked rice boils and the cooked rice temperature rises to 115 ° C (S36), the ON / OFF state of the menu switch 6 is judged (S37). If the cooked rice is OFF, the power to the heater is stopped (S38). ), When the temperature of the cooked rice falls below 100 ° C. in the purging process (S39), the heater is energized (S40), and when the energization time T3 reaches 30 seconds (S41), the heater is energized. Stop (S42). Furthermore, it is determined whether or not the time for purging has reached a predetermined T2 (S43), and if it has reached T2, the process proceeds to the heat retention process (S56). Now the cooked rice in standard condition is cooked.

In (S37), if the menu switch is ON, that is, if the rice cooking state is changed from the standard state to the savory rice state after starting the rice cooking, it is determined whether the cooked rice temperature has reached 130 ° C (S49). When the temperature reaches ℃, the power to the heater is stopped and the savory rice cooking process (S50),
(S51), (S52), (S53), (S54), (S55) will be moved to. That is, after the rice was cooked, the rice cooked state was changed from the standard state to the fragrant state.

When the menu switch is turned ON after starting, that is, when cooking to a fragrant state, the preheating and rice cooking processes are the same as in the standard state above, but the rice temperature θ during the rice cooking process is 11
It is determined whether or not it has reached 5 ° C (S47), and if it has reached it is determined whether the menu switch 6 is ON / ON (S48), and if it is OFF, whether or not the cooked rice temperature θ has reached 130 ° C. It is judged whether or not (S49), and if it has reached, the power supply to the heater is stopped (S5
0), move to the Murashi process. Cook twice in the purple process (S5
1) and (S52) are the same as in the standard state,
The energization time T3 for cooking twice is 60 seconds (S53), which is twice the 30 seconds in the standard state. After the Murashi process, the same heat retention process as in the standard state is performed. In this case as well, after determining whether the cooked rice temperature θ has reached 115 ° C. (S47), it is determined whether the menu switch is ON / OFF (S48), and when OFF, the standard state unevenness process (S38), (S39). ), (S40), (S41),
It moves to (S42) and (S43) and cooks to the standard condition. That is, after starting rice cooking, turn the menu switch from ON to OFF.
It is possible to change from the fragrant state to the standard state by switching to.

In the case of a rice cooker that can set a reservation timer time by a timer, it is of course possible to change the rice cooking state within the reservation timer time.

[Effect of the Invention] The present invention has a starting means for starting a rice cooking process, a first rice cooking menu that cooks rice at a standard rice cooking completion temperature and a cooking time of 2 degrees, and a rice cooking completion temperature that is higher than the rice cooking completion temperature of the first rice cooking menu. A rice cooking menu composed of a second rice cooking menu for cooking rice with a longer cooking time, a storage means for storing the rice cooking menu, and a selection means for selecting the rice cooking menu are provided to start the rice cooking process. During the first rice cooking completion temperature, the rice cooking method of the rice cooker for selecting the rice cooking menu by the selecting means is adopted.

As a result, even if you notice the mistake of setting the cooked rice at the time of setting, you can always choose between "soft" and "hard" cooked rice before the first cooking completion temperature. it can.

Therefore, according to the present invention, it is possible to select a change for adjusting the degree of cooked rice, which is hard or soft, to suit the taste, and it is possible to realize a convenient rice cooker.

[Brief description of drawings]

FIG. 1 is a flow chart of rice cooking operation which is an embodiment of the present invention, FIG. 2 is a diagram showing a heating curve of a rice cooker, FIG. 3 is a circuit diagram of a rice cooker control device, and FIG. It is a flow chart of rice cooking operation. The same reference numerals in the drawings indicate the same or corresponding parts.

Front page continuation (72) Hiroaki Tsukahara Inventor Hiroaki Tsukahara 1728 Omaeda, Hanazono, Osato-gun, Saitama 1 Mitsubishi Electric Home Equipment Co., Ltd. (56) Reference JP-A-63-71216 (JP, A) JP-A-2- 280719 (JP, A)

Claims (1)

[Claims] 1. A starting means for starting a rice cooking process, and a first rice cooking process at a standard rice cooking completion temperature and a second cooking time.
A rice cooking menu, a rice cooking menu comprising a second rice cooking menu in which the rice is cooked at a temperature higher than the completion temperature of rice cooking of the first rice cooking menu twice for a longer cooking time, and a storage means for storing the rice cooking menu, A rice cooking method for a rice cooker, comprising: selecting means for selecting the rice cooking menu, wherein the rice cooking menu is selected by the selecting means between the start of the rice cooking process and the first rice cooking completion temperature.