JPH0330713A - Rice cooker - Google Patents

Abstract

PURPOSE:To prevent rice-cooking from being ended at a time earlier than a user-desired time, or from being done by a cooking process of which the menu is not desired, by a method wherein, when power failure happens during the operation of a timer for a rice cooker, the rice-cooking using the timer is restarted at the state of the menu before the power failure, from the time when a timer time is set forward by a specified time after the power failure is recovered. CONSTITUTION:In a control device 9, a rice-cooking device 1 is controlled by the input from a menu-selecting switch 3 and a start which 4, and rice-cooking is done and, when a timer time is also inputted, the rice-cooking is done by a time. In a timer time-operating device 8, the rice cooking is started at a specified time at which the start time is preset according to each to menus of cleaned rice, rice gruel and unmilled rice, so that the rice cooking is ended when the decrement of the timer time is ended. Furthermore, when power failure happens during the decrement of the timer time, the timer time is reset forward by two hours by the timer time-operating device 8 when the power failure is recovered. At this time, when the timer time passes a cooking-starting time, the rice cooking is immediately started. Even if the power failure happens while the rice cooking using the timer is being done, fresh boiled rice can be obtained at a desired time since the operation of the timer is continued after the power failure is recovered.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a rice cooker for home use.

Conventional technology In recent years, some rice cookers equipped with a timer device have a clock function using batteries, etc., and end cooking at a desired time. Even if a power outage occurs during cooking, after the power is restored,
This completely reproduces the operation before the power outage.

However, general rice cookers use a timer device that inputs the time until the end of rice cooking, and the timer device of this type of rice cooker can handle power outages ranging from several tens of minutes to about an hour. Its operation is compensated by a simple power outage compensation circuit using capacitors, etc. In other words, the difference between when the timer is operating or when rice is being cooked and when the rice cooker is not in use is shown by whether the capacitor is charged or not. Therefore, when the appliance recovers from a power outage, rice will be cooked immediately even if the timer was operating before the power outage. Also, at this time, since the power failure compensation circuit is a simple power failure compensation circuit using a capacitor, the menu before the power failure is not memorized, and after the power outage is restored, rice cooking is resumed using the most frequently used white rice menu.

FIG. 3 shows a block diagram of a conventional rice cooker.

Reference numeral 11 denotes a rice cooking means consisting of a heater and a pot for storing rice cooking ingredients, 12 a timer input switch for inputting a timer time for timer rice cooking, and 13 a plurality of rice cooking menus such as white rice, brown rice, porridge, etc. This is a menu selection switch for selecting -.

14 is a start switch that starts timer rice cooking when timer time is input, and starts rice cooking immediately when no timer time is input; 15 is a cancel switch that stops timer operation, rice cooking operation, menu selection operation, and timer time input operation. ,
16 is a display means for displaying timer time, rice cooking menu, rice cooking process, etc.; 17 is charged during timer rice cooking or rice cooking;
This is a cooking state storage means whose main component is a capacitor that is otherwise uncharged.

18 is a control means which receives inputs from the timer time input switch 12, menu selection switch 13, and start switch 14, controls the rice cooking means 11 to cook rice, and when the power is restored after a power outage, the capacitor is turned off. If the battery is charged by checking the status in step 7, it starts cooking rice.

FIG. 4 shows the operation of a conventional rice cooker when a power outage occurs while timer rice cooking is being performed.

A is a rice cooking operation in the case where there is no power outage, and the rice cooking is completed 12 hours after the timer is set. Case b is a case where a power outage occurs while the timer is operating, and after the power is restored, the rice will be cooked immediately using the white rice menu regardless of the menu before the power outage, so 12 hours after the scheduled end of cooking, the rice will be kept warm for a long time. It is something that

Problems to be Solved by the Invention As described above, in conventional rice cookers, if there is a power outage while the timer is operating, cooking starts immediately after the power is restored, so that by the desired end time of cooking, the rice will not be freshly cooked. It is necessary to eat rice that has been kept warm for a long time instead of rice, and even if brown rice or porridge is cooked, the rice may not be cooked properly because it is cooked using the rice cooking process of the white rice menu. Ta.

In view of the above problems, the present invention aims to cook rice deliciously using a predetermined rice cooking menu even when there is a power outage.

Means for Solving the Problems In order to achieve the above object, the present invention provides a rice cooking means for cooking rice, a timer time input switch for inputting timer time for timer rice cooking, and rice porridge, rice porridge, etc. Menu selection switch to select multiple rice cooking menus, and timer rice cooking if timer time is input.
A start switch that immediately starts cooking rice if no input is received, a power failure detection means that outputs a signal only when commercial AC power is supplied to the rice cooker, and a timer that starts measuring time when rice cooking starts, and When the output of the power failure detection means stops, the time at that time is memorized, and when the output of the power failure detection means is received again, a predetermined timer addition time T+ is added to the memorized time, and then time measurement is resumed. A timer time calculation means, upon receiving the outputs of the menu selection switch and the start switch, controls the rice cooking means to cook rice, and if the timer time is input, performs timer cooking and calculates the timer time. A control means for controlling the rice cooking means so as to end the rice cooking when the time measured by the means and the timer time inputted match, and when the output of the power failure detection means stops,
power outage compensating means for compensating the operations of the control means and the timer time calculating means only during a predetermined power outage compensation time T2; and displaying the timer time, rice cooking menu, rice cooking process, etc. in response to the output of the control means. A display means is provided.

Effects According to the above configuration, even if there is a power outage while the timer of the rice cooker is operating, the timer rice cooking will be restarted from the point where the timer time has advanced by a predetermined period after the power outage returns, with the same menu as before the power outage, so that the user can This prevents rice cooking from ending at a time earlier than the desired rice cooking end time, or from using a rice cooking method other than the desired menu.

Example FIG. 1 shows a block diagram of an embodiment of the present invention.

In the figure, reference numeral 1 denotes a rice cooking means comprised of a heater, a pot for storing ingredients such as rice and water, and 2 a timer time input switch for inputting a timer time. 3 is a menu selection switch that selects multiple rice cooking menus: white rice, brown rice, porridge, rice, and white rice high-speed cooking; 4 is a menu selection switch that starts cooking rice immediately when timer time is input, and when timer rice is not input The start switch 5 is a cancel switch that stops the timer operation, rice cooking operation, menu selection operation, and timer time input operation. Further, 6 is a display means consisting of an LCD that displays the timer time, rice cooking menus such as white rice, brown rice, porridge, etc., rice cooking steps such as pre-cooking, boiling, and uneven cooking, and an LED that indicates the rice cooking status of timer, rice cooking, and keeping warm. be.

7 is a power failure detection means that outputs a signal while commercial AC power is supplied to the rice cooker and stops outputting the signal when the supply stops; 8 decrements the input timer time when timer rice cooking is started; When the input from the power outage detection means 7 stops, the timer time at that point is memorized, and when there is an input again from the power outage detection means 7, two hours are subtracted from the memorized timer time, and then the timer is restarted. This is a timer time calculation means that resumes decrement after advancing 2 hours.

Numeral 9 receives inputs from the menu selection switch 3 and start switch 4 to control the rice cooking means 1 to cook rice, and when a timer time has been input, timer rice cooking is performed and the timer time calculation means 8 calculates the timer time. Cooking for white rice, porridge,
Rice cooking is started at a predetermined rice cooking start time determined according to each menu of brown rice, and if there is a power outage during the timer, when the power is restored, the timer time calculation means 8 is set to 2.
This control means immediately starts cooking rice if the timer time has passed the rice cooking start time after advancing the timer time.

10 causes the control means 9 to continue to hold the rice cooking menu and rice cooking process stored in the control means 9 for only a predetermined power failure compensation time when the output of the power failure detection means 7 is stopped, and also compensates for the operation of the timer time calculation means 8. 11 is a commercial AC power supply.

FIG. 2 shows the operation of an embodiment of the present invention.

A shows the rice cooking operation when there was no power outage, and the rice cooking was completed 12 hours after the timer was set.

b is a case where a power outage occurs while the timer is operating, and after the power is restored, the timer time is advanced by 2 hours and then the timer continues to operate.
It performs a rice cooking operation.

Effects of the Invention As described above, according to the present invention, even if there is a power outage during timer rice cooking, the timer operation continues after the power is restored, so that the timer operation can be continued even after the power is restored. You can get freshly cooked rice at the desired time without having to keep the rice warm for hours, and the rice cooking menu entered by the user before the power outage is remembered even after the power outage, so for example, rice porridge This will eliminate mistakes in cooking rice, such as rice boiling over because the rice was cooked using the white rice cooking method after a power outage.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a time chart showing the operation of an embodiment of the present invention, FIG. 3 is a block diagram of a conventional example, and FIG. 4 is an operation of a conventional example. It is a time chart showing. 1... Rice cooking means, 2... Timer time input switch, 3... Menu selection switch, 4
...Start switch, 5.Cancel switch, 6.Display means, 7.Power failure detection means, 8.Timer time calculation. Means, 9...
. . . Control means, 10 . . . Power outage compensation means.

Claims (1)

[Claims] A rice cooking means for cooking rice, a timer time input switch for inputting timer time for timer rice cooking, a menu selection switch for selecting multiple rice cooking menus such as white rice, brown rice, porridge, etc., and a start for starting rice cooking. a switch, a power failure detection means that outputs a signal only when commercial AC power is supplied to the rice cooker, and a timer that starts measuring time when rice cooking starts, and when the output of the power failure detection means stops, the time at that time is measured. and a timer time calculation means which restarts time measurement after adding a predetermined timer addition time T_1 to the stored time upon receiving the output of the power failure detection means again, the menu selection switch and the start timer time calculation means; When receiving the output of the switch, the rice cooking means is controlled to cook rice, and if the timer time is input, timer rice cooking is performed and the time measured by the timer time calculation means and the input timer time are a control means for controlling the rice cooking means so as to end cooking rice at the time when the rice coincides with each other; and a control means for controlling the rice cooking means so as to finish cooking the rice at the time when the rice coincides with each other; and a control means for controlling the rice cooking means and the timer time calculation means only for a predetermined power failure compensation time T_2 when the output of the power failure detection means stops. power outage compensating means for retaining the memory of the timer time, the rice cooking menu, and the output of the control means;
A rice cooker comprising display means for displaying the rice cooking process, etc.