JPH0740995B2 - Cooker timer display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a timer display device used in a cooker having a timer function such as a rice cooker.

(Prior Art) For example, in a rice cooker equipped with a rice-cooking control circuit including a microcomputer, there is a rice cooker that uses a clock function of a microcomputer to perform so-called timer-cooking that completes a rice-cooking operation after a desired time. is there. In this case, when the timer rice is cooked, the operation unit is operated to first set the current time and then set the desired time of cooking. Then, when the start switch is turned on, the waiting time until the start of rice cooking is calculated based on the set cooking time, the set current time, and the time required to execute rice cooking determined in advance, and the timing operation from the start switch insertion time is calculated. Be started. Then, when the calculated waiting time is timed, the rice is cooked, and the rice cooking is completed at the above-mentioned set time.

The rice cooker having such a timer function is provided with a timer display device for displaying the current time, the time when the rice is cooked, and the like set by the operation of the operation unit. As this kind of timer display device, there are one that displays a time display with seven segments and is displayed by digital numbers, and one that displays a time with a frame-shaped arrangement and a graphic display provided with display elements in order of weight of display time. is there. Also, a device having both a digital display and a graphic display is also considered. When an abnormality such as a heater wire breakage or a temperature sensor failure occurs in the rice cooker, such a timer display device of the rice cooker responds to the abnormality detection and displays an abnormality using the time display. Controlled. That is, in the case of digital display, the characters "OFF" are displayed using 7 segments, and in the case of graphic display, symbols such as "x" are displayed. Therefore, the user can know that an abnormality has occurred in the rice cooker due to the abnormality display such as "OFF" or "x" being displayed on the timer display device.

(Problems to be solved by the invention) However, when an abnormality occurs, it is important to promptly investigate the cause of the abnormality. For that purpose, in which mode during operation the abnormality occurred, voltage fluctuation, It is necessary to check if there were any external factors such as earthquakes or power outages. However, if only the abnormal display such as “OFF” or “×” is displayed,
It was impossible to investigate the cause of the abnormality from the displayed contents.

Therefore, the present invention is intended to provide a timer display device for a cooking device, which can display an abnormality occurrence time together with an abnormality display when an abnormality occurs in the cooking device and can easily and quickly investigate the cause of the abnormality. .

[Configuration of the Invention] (Means for Solving the Problems) The present invention provides a timer display device for a cooking device having a timer function, at least a clock display unit for displaying the current time, and a timer reservation for displaying at least the cooking completion time. Abnormality display in which an abnormality is displayed on one of the display unit and the timer display unit in response to the abnormality detection of the cooking device, and the time when the abnormality occurs is displayed on the other display unit. And a control means.

(Operation) In the case of the timer display device for a cooking device that takes such a means, when an abnormality occurs in the cooking device, an abnormality is displayed on either the clock display unit or the timer reservation display unit, and the other is displayed. The time when the abnormality occurred is displayed on the display section of.
Therefore, it is possible to recognize that an abnormality has occurred in the cooking device by the abnormality display displayed on one display unit, and in which operation mode the abnormality has occurred depending on the abnormality occurrence time displayed on the other display unit, Alternatively, it becomes easy to judge whether it is caused by an external factor such as a voltage fluctuation or an earthquake.

(Example) Hereinafter, one example in which the timer display device of the present invention is applied to a rice cooker will be described with reference to the drawings.

FIG. 1 is an external view of a rice cooker, in which 1 is a main body, 2 is an inner pot, 3 is an inner lid, 4 is an outer lid, and 5 is a power cord. A heater 6 and a temperature sensor 7 are provided at positions facing the bottom of the inner pot 2 inserted into the main body 1. The heater 6 is for heating the inside of the inner pot 2. The temperature sensor 7 is for measuring the temperature in the inner pot 2. An operation panel 8 having a display and a keyboard is attached to the outer wall of the main body 1.

FIG. 2 is a control block diagram of the rice cooker. In the figure, 11 is a CPU (central processing unit) as a control unit main body, and a ROM 12 for storing fixed data such as a control program.
And a RAM 13 having a memory for storing the current time, cooked time, etc. set by operating the keys of the operation panel 8 when the timer is set, are controlled via the bus line 14. Further, a heater drive circuit 15 for the heater 6, a temperature detection circuit 16 for taking in a signal from the temperature sensor 7, and a display control circuit for driving and controlling a display unit 17 on the operation panel 8.
18. Similarly, a keyboard input circuit 20 for inputting a signal from a keyboard 19 on the operation panel 8 and a timer circuit 21 for timing are connected to the CPU 11 via a bus line 22.

FIG. 3 is a detailed view of the operation panel 8. As shown in the figure, above the panel 8, a timer LED 31 that lights up when the timer is set, a rice cooking / steaming LED 32 that lights up during the rice cooking process and blinks during the steaming process, and a heat retaining LED 3 that lights up during the warming process.
LED display group of 3 and digital display as a clock display unit that displays the current time or cooked time in 1 minute units
4, Graphic display as timer reservation display that displays current time, cooked time and remaining time in 15-minute units
35, "White rice", "Hayaki", "Cooked / Brown rice", "Rice porridge"
Is provided with a display unit 17 including a timer display device 37 having a menu display device 36 for displaying each menu of
Start key 38 to be pressed when setting for rice cooking or heat retention, Cancel key 39 to be pressed to cancel the set, Menu key 40 to be pressed to wash the menu, Reservation key 41 to be pressed when making timer reservation, Current key Time up key 42 for sending time or cooked time in the forward direction, time down key 43 for sending current time or cooked time in the return direction, time setting key to be pressed when adjusting the current time
44, a keyboard 19 having a reservation display key 45 for switching the display contents of the digital display 34 between the current time and the cooked time is provided.

Then, the COU 11 executes the following operation according to the program in the ROM 12. When the power plug at the tip of the power cord 5 is plugged into an outlet and the power is turned on, a predetermined initial process is executed and then the keyboard 19 holds key data. Here, when the menu key 40 is input, the display on the menu display 36 is cyclically switched in the order of "white rice", "heat cooked", "rice cooked / brown rice", and "porridge". When the time adjustment key 44 is pressed, the current time setting is recognized and the digital display 34 displays the initial time, for example, "1.
In addition to displaying "2:00", the display element corresponding to the initial time 12 o'clock of the graphic display 35 is turned on. In this state, the time up key 42 or the time down key 43 is input, and the up key 42 is input. If so, the time on the digital display 34 is updated in the advancing direction in units of 1 minute, and the lighting display element of the graphic display 35 is also shifted in the advancing direction in units of 15 minutes. Conversely, if the down key 43 is pressed, The time on the digital display 34 is updated in the return direction in units of 1 minute, and the lighting display element of the graphic display 35 is also shifted in the direction of return in units of 15 minutes.
The current time adjustment is completed according to the input of.

Here, when the reservation key 41 is input, the setting of the cooked time is recognized, and the time up key 42 is input. And
If the up key 42 is pressed, the graphic display 35
The lit display element of is sequentially moved in the direction of advance in 15-minute units from the current time position. Then, the setting of the cooking time is completed according to the input of the start key 38.

Then, based on the current time, the cooked time, and the time required to execute rice cooking that is predetermined for each menu, the waiting time until the rice cooking execution is started is calculated, and the timer circuit 21 is set to start measuring the waiting time. . At this time, for timer
Turn on LED31. On the digital display 35, all the display elements from the display element corresponding to the current time to the display element corresponding to the cooked time are turned on to display the remaining time until the cooked (4th See figure). Then, every time one minute is counted by the timer circuit 21, the current time of the digital display 34 is updated in the advance direction, and
Every time 15 minutes are counted, the display elements corresponding to the current time of the graphic display 35 are sequentially turned off in the forward direction.

When the timer circuit 21 finishes measuring the standby time, the heater 6 is turned on, and the rice is cooked according to the rice cooking control corresponding to the selected menu. At this time, the LED 32 for cooking / steaming is turned on during the rice cooking process, and the LED 32 is blinked when entering the steaming process. Then, the cooked rice is completed at the set cooking time, and the heat retention process is started. At this time, LED33 for heat retention
Light up.

On the other hand, if the reservation display key 45 is pressed when setting the cooking time or after setting the timer, the digital display 34
The display content of is changed from the current time display to the display of the cooked time (see FIG. 5).

Also, after the timer is set, the heater 6 may be disconnected or the temperature sensor 7 may be disconnected.
When an abnormality such as the temperature detection abnormality is detected, the display state of the graphic display unit 35 is changed to the abnormal display of the "x" symbol and the digital display unit 34 is locked at the current clock time (see FIG. 6).

When timer rice is cooked by the rice cooker of the present embodiment that operates as described above, the user first depresses the menu key 40 to select a menu. Then, press the time setting key 44,
The time up key 42 or the time down key 43 is operated to set the current time in units of 1 minute. At this time, the set time is displayed as a digital number on the digital display 34. If the display content on the digital display 34 matches the current time, the reservation key 41 is pressed to set the current time (for example, 12:00). To complete. Next, the time up key 42 is operated to set the time of cooking in 15-minute units. At this time, the set time is indicated by the lighting of the corresponding display element on the graphic display 35, so if the display element at the desired time of cooking is lit, press the start key 38 and the cooking time (for example, 6:00)
Complete the settings. Then the timer was set,
Timing is started by the timer circuit 21. In this state, as shown in FIG. 4, the current time is displayed on the digital display 34, and the rough current time, the cooked time, and the remaining time are displayed on the graphic display 35.

Here, the user presses the reservation display key 45 when he / she wants to confirm the time when the rice is cooked. Then, the display contents of the digital display 34 are switched to the set time after cooking as shown in FIG. 5, so that the contents can be confirmed at a glance rather than being read from the display contents of the graphic display 35.

On the other hand, when the waiting time until the start of rice cooking is timed by the timer circuit 21, the rice cooking operation according to the selection menu is started. At this time, however, if the wire breakage of the heater 6 or the temperature detection abnormality of the temperature sensor 7 occurs, As shown in FIG. 6, the display state of the graphic display 35 becomes abnormal and the digital display 34 stops at the current time. Therefore, the user can recognize that an abnormality has occurred in the rice cooker from the display content of the graphic display 35, and the digital display 34
The time when the abnormality occurred can be known from the display content of.

As described above, according to the timer display device of this embodiment, when an abnormality occurs in the rice cooker, the abnormality information can be displayed on the graphic display 35 and the abnormality occurrence time can be displayed on the digital display 34. It is possible to immediately confirm from which operation mode the operation mode in which the error occurred, or whether it was caused by an external factor such as a power failure or an earthquake. Therefore, the cause of the abnormality can be easily determined, so that the recovery process can be performed quickly and the practicality can be improved.

In the above embodiment, the graphic display 35 is used to display an abnormality and the digital display 34 is used to display the time of occurrence of an abnormality. However, the digital display 34 is used to display an abnormality, such as "OFF" Sometimes, the display of the graphic display may be locked to display the time of cooking, the remaining time, and the time of occurrence of abnormality (current time).
Further, it goes without saying that the timer display device of the present invention can be applied to a cooker having a timer function other than a rice cooker.

[Effects of the Invention] As described in detail above, according to the present invention, when an abnormality occurs in the cooking device, the abnormality display can be displayed together with the abnormality occurrence time, and the cause of the abnormality can be easily and quickly investigated. It is possible to provide a timer display device.

[Brief description of drawings]

1 to 6 are views showing an embodiment of the present invention, FIG. 1 is an external view of a rice cooker, FIG. 2 is a control block diagram of the rice cooker, and FIG. 3 is a detail of an operation panel. FIGS. 4 to 6 are views showing display forms when the timer of the present invention is set,
FIG. 4 is a diagram showing a display form when the timer is set, FIG. 5 is a diagram showing a display form when the reservation display key is pressed, and FIG. 6 is a diagram showing a display form when an abnormality occurs. 8 ... Operation panel, 11 ... CPU, 18 ... Display control circuit, 2
1 …… Timer circuit, 34 …… Digital display, 35 …… Graphic display, 45 …… Reservation display key.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-63-65826 (JP, A) Actually opened 55-162186 (JP, U) Actually opened 62-101323 (JP, U)

Claims (1)

[Claims] 1. A timer display device for a cooker having a timer function, comprising a clock display section for displaying at least the current time, a timer reservation display section for displaying at least the cooking completion time, and responding to abnormality detection of the cooker. And an abnormality display control means for displaying an abnormality on one of the clock display portion and the timer reservation display portion and displaying an abnormality occurrence time on the other display portion. Timer display device.