JPS6219120A - Rice cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a rice cooker that performs so-called timer rice cooking.

[Technical background of the invention and its problems] For example, in a rice cooker equipped with a rice cooking control circuit consisting of a microcomputer, there is a so-called timer that completes the rice cooking operation after a desired time by using the timing function of the microcomputer. There are some that are designed to perform immersion cooking. Therefore, with this device, when you want to perform instant cooking, first input and set the current time by operating the current time setting screen, and then set the desired time for the rice to be cooked as the desired time. Input the desired rising time using the switch. Then, when the start switch is operated, the waiting time until the start of rice cooking is calculated based on the desired cooking completion time, the current time, and the time required for rice cooking, and the timing operation starts from the time the start switch is turned on. Once the standby time has elapsed, rice cooking is started and the rice cooking is completed at the set desired cooking completion time.

By the way, in the above-mentioned device, when the current time setting switch is pressed and turned on to set the current time, the initial time is set by the first ON signal and displayed on the display, and then from that ON signal, for example, 0 When .5 seconds have elapsed, the time that is counted up by, for example, 10 minutes from the initial time is updated and displayed. If you keep pressing the current time setting switch during this time, the time will change to 10 at intervals of approximately 0.2 seconds.
The time is sequentially updated to the minute incremented time, and when the current time setting switch is released, the time at that time is input and set. The same holds true when setting the desired cooking completion time.

However, as mentioned above, when the current time or desired cooking time is updated sequentially in a predetermined time update mode and is input and set at a predetermined timing, the updated time must be set by the user. In some cases, the current time may be passed by, and in this case, the user must press the time setting button again and set the time again from the beginning, which is troublesome. As a countermeasure for this, it has been considered to provide a "forward" switch that advances the time update mode forward and a "reverse advance" switch that advances the time update mode backwards for the current time setting, but in this case the number of switches would increase and the rice cooker would The layout structure of the 1 inch on the operation panel of the main body becomes complicated, and the operation panel must also be large, requiring major changes in the overall structure, resulting in a problem of rising costs.

Furthermore, in this case, when considering the frequency of use of the "forward" switch and the frequency of use of the "one-reverse" switch, the former switch is overwhelmingly used, and there is also the problem that the lifespan of the switches is not averaged.

[Object of the Invention] The present invention has been made in view of the above circumstances, and its object is to easily set the current time and the desired time for rice cooking, and to facilitate this time setting by simply turning a switch. To provide a rice cooker which can be realized without increasing the number of units and furthermore can have an average switch life.

[Summary of the Invention] The present invention sequentially updates and inputs the current time according to a time update mode by operating a current time setting switch in a rice cooking control circuit having a timekeeping function, and also inputs and sets the current time by operating a desired time setting switch. The desired time for rice cooking is sequentially updated and inputted according to the time update mode, and the rice cooking control circuit is made to control rice cooking based on the set current time and the desired time, wherein among the switches, When updating the time by either switch,
The time update mode for the one switch is reversed on the condition that the other switch is operated,
Therefore, even if the time initially updated in the time update mode passes the time to be set, the time setting can be immediately and easily reversed and corrected by using any of the above-mentioned switches. be.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. First, in FIG. 2, reference numeral 1 denotes a 7,49-port computer corresponding to a rice cooking control circuit, which has a timekeeping function using, for example, an AC power frequency. 2 is a display section, for example, a 4-digit, 7-segment light emitting diode;
The power sword side of each digit of this is connected to the output terminals Ro to R3 of the computer 1 through the inverter circuit 3.
It is connected to the. A high level scan pulse is output to each of the output terminals R8 to R3 of the 7.49-port computer 1, and the light emitting diode 2 is turned on dynamically. 4 is a current time setting switch, and 5 is a desired cooking time setting switch, which is a desired time setting switch. Both of these are self-resetting type push switches, and are connected to the microcomputer 1 via a diode 6 with the polarity shown in the figure.
is connected between the output terminal Ro and the input terminals k1 and k2.

Each input terminal 1<1 and 2 is always maintained at a low level by a pull-down resistor 71. Reference numerals 8 and 9 denote a start switch and a cancel switch, both of which are self-resetting type push switches, and are connected between the output terminals Kl and 2 of the microcombi coater 1 through a diode 10 with the polarity shown. . When the current time setting switch 4 is pressed and turned on, a high-level pulse is input to the input terminal of the micro combi coater 1, and the current time is set in a predetermined time update mode according to the pressing time or -6 = number of times of pressing. At the same time, the time is sequentially updated and displayed on the light emitting diode 2. In this case, the initial time is set to "12 o'clock OO minutes" by the first ON operation of the mll engraving switch 4,
If you continue to turn on the current time switch 4, the time will be updated to the initial time after 0.5 seconds by incrementing ``10 minutes'', and thereafter, the time will be incremented by ``10 minutes'' every 0.2 seconds. The time is updated sequentially and displayed on the light emitting diode 2, and while the time is being updated in such a time update mode, when the current time setting switch 4 is turned on, the time at that point is changed. It is input and set to the microcomputer 1. On the other hand, when the desired cooking completion time setting switch 5 is pressed and turned on, a high level pulse is input to the input terminal 1<2 of the microcomputer 1, and the desired cooking completion time is sequentially updated according to the suppression time or the number of suppressions. The time can be inputted into the microcomputer 1 and displayed on the light emitting diode 2 in place of the current time. In this case as well, the time is sequentially displayed on the light emitting diode 2 in the same time update mode as the current time setting described above, and when the desired cooking completion time switch 5 is turned off, the current time is input as the desired cooking completion time. Set. When the current time and the desired cooking completion time are set in the microcomputer 1 as described above and the start switch 8 is turned on, the microcomputer 1 adjusts the desired cooking completion time according to the preset rice cooking program. Calculate the time difference between the current time and the current time, and calculate the standby time by subtracting the time required to complete the rice cooking operation from the time difference, so that the timer rice cooking that starts the rice cooking operation after the elapse of the specified time is executed. ing. The rice cooking operation is performed by microcomputer 1.
The rice cooking process is executed by turning off electricity to a rice cooking heater (not shown) while detecting the temperature of the steel according to a well-known rice cooking program set in advance. Now, microcomputer 1
For example, a time setting program as shown in FIG. 1 is incorporated in the computer as a subroutine, and this will be described in detail below. Assume that the current time to be set is "16 minutes OO minutes". First, when the current time setting switch 4 is pressed, the initial time is first set to "12 o'clock OO minutes" as described above, and then whether or not the switch turned on is the current time setting switch 4 is determined. In this case, the current time setting switch 4 corresponds to this, so as you can see from counting process A, the time is counted up by ``N0 minutes'' and set to ``12''.
10 minutes". During this time, if you continue to turn on the current time setting switch 4 without turning on the desired cooking time setting switch 5, the time will count up according to the time update mode, as can be seen from judgment process B, count process C, and judgment process. The time is sequentially updated (update time interval is 0.2 seconds), and the time is sequentially displayed on the light emitting diode 2 as shown in FIG. Here, the updated time is r1
611; If the time exceeds 700 minutes (the time is
6:20''), and while keeping the current time setting switch 4 in the on state, turn on the desired cooking completion time setting switch 5.

Then, in the determination process, it is determined that the desired cooking time setting switch 5 is turned on, and the process moves to counting process E. When the desired cooking time setting switch 5 is kept in the ON state, as can be seen from the judgment process F, the count process E is repeatedly executed at intervals of 0.5 seconds, and the current time is sequentially counted down. , that is, the time update mode changes from "116FfI20 minutes" to "16:10 J, N6
The current time is updated sequentially at 0.5 second intervals, and when the time reaches 16:00, the desired time switch 5 is turned on. When you release the on operation, the time “16
The current time is 116:00 when the on operation of the current time switch 4 is released and turned off.
Minutes” is input and set. After inputting and setting the current time as described above, you will next set the desired cooking completion time, but in this case, first turn on the desired cooking completion time setting switch 5 and proceed in the same order as described above. Update the time in the time update mode, and when the time to be set has passed, turn on the current time setting switch 4 to change the time update mode to the reverse time update mode, and do the same as described above. and set the desired time for the rice to finish cooking. Note that if the star switch 8 is turned on after setting the current time or the desired cooking time, this time setting program is returned.

According to the above embodiment, when the time is updated by one of the current time setting switch 4 and the desired cooking time setting switch 5, if the other switch is operated, one switch is set to 1 inch. Since the time update mode is changed to reverse, when the time is updated in the forward time update mode by operating one of the switches, if the updated time passes the desired time to be set. However, the update time can be immediately and easily adjusted using the other switch, making it easy to input and set the current time and desired cooking time. Since the current time is set using the desired cooking time setting switch 5, and the desired cooking time is setting the current time setting switch 4, it is possible to
Unlike the case where a "reverse feed" switch is provided, there is no need to increase the number of 28-inch units, and therefore, it is possible to avoid complicating the layout of the 28-inch units on the operation panel of the rice cooker, and to make the operation panel larger. There is no need to
As a result, there is no need to change the partial structure of the operation panel, the increase in cost can be avoided, and it is possible to average the switch life.

In the above embodiment, when the time is updated by reversing the time update mode, the time is updated sequentially according to the continuous on time of the other switch. However, as another embodiment of the present invention, As shown in FIG. 4, the time may be sequentially updated every time the other inch (in FIG. 4, the desired cooking time setting switch 5) is turned on. In addition, in the above embodiment, the mode for up-counting the time "10 minutes" was set as the forward time update mode, but conversely, "10 minutes"
The mode in which the time is counted down by "minutes" may be set as the forward time update mode. Furthermore, although the update time interval of the backward time update mode was set to 0.5 seconds, this may be set as appropriate, such as 1 second, or the update time may be changed to [10 minutes J]. Not limited to "5 minutes" or "1 minute"
You can change it to something like that.

In addition, the present invention is not limited to the above-mentioned embodiments, and can be implemented with various changes within the scope of the gist, such as the desired time for rice cooking may be the desired time to start cooking instead of the desired time to finish cooking. be.

[Effects of the Invention] As is clear from the above description, the present invention sequentially updates and inputs the current time according to the time update mode by operating the current time setting inch to a rice cooking control circuit having a timekeeping function. In addition, the desired time for rice cooking is sequentially updated and inputted according to the time update mode by operating a desired time setting switch, and the control circuit controls the rice cooking based on the set current time and desired time. In the device, when the time is updated by one inch of any one of the switches, the time update mode for the one switch is reversed on the condition that the other switch is operated. With this, it is possible to easily set the current time and the desired time, and this simplification of time setting can be achieved without increasing the number of switches, thereby suppressing the increase in costs. At the same time, it also has the excellent effect of making it possible to average out the life of the switch.

[Brief explanation of the drawing]

1 to 3 show one embodiment of the present invention, FIG. 1 is a 70-chart, FIG. 2 is a circuit diagram of the main part, and FIG. 3 is a state of each inch for explaining the operation. FIG. 4 is a diagram corresponding to FIG. 3 showing another embodiment of the present invention. In the diagram, 1 is Ma, Iku mouth computer (rice cooking control circuit),
2 is a light emitting diode, 4 is a current time setting switch, and 5 is a desired cooking time setting switch (desired time setting switch).

Claims (1)

[Claims] 1. Input and set the current time to the rice cooking control circuit having a timekeeping function by operating the current time setting switch to update the current time sequentially according to the time update mode, and update the desired time for rice cooking by operating the desired time setting switch. The rice cooking control circuit is configured to sequentially update and input settings according to the mode, and cause the rice cooking control circuit to control rice cooking based on the current time and desired time, when the time is updated by any one of the switches. A rice cooker, characterized in that the time update mode for one of the switches is reversed on the condition that the other switch is operated.