JPH0438316B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a timer device for a cooking appliance.

BACKGROUND ART A conventional timer device for a cooking appliance will be explained based on the block diagram of FIG.

First, when the timer increase switch 1 for increasing the timer setting time is pressed for the first time, the first time determination means 3 determines that it has been pressed for the first time, and the predetermined timer setting time (for example, 1 hour) stored in the storage means 4 is determined. ) is set in the timer setting means 5, and this set time is displayed on the display means 6.

Next, by pressing timer increase switch 1 or timer decrease switch 2 any number of times,
Adjust to the user's desired setting time, for example 7 hours and 30 minutes. That is, the set time can be set to an arbitrary value by pressing the timer increase switch 1 to increase the set time, and when the time has increased too much, by pressing the timer decrease switch 2 to decrease the time. Assuming that the timer is set in increments of 10 minutes, the switch must be pressed 6 x 3 + 3 = 21 times.

Next, when the start switch 7 is pressed, the timer subtraction means 8 starts operating and subtracts the set time of the timer setting means 5 according to the elapsed time. When the subtracted timer setting time reaches a predetermined setting time (for example, the middle part after 7 hours and 30 minutes), the heating means 9 starts operating and performs a predetermined heating operation.

Problem to be solved by the invention In such a conventional timer, in order to set the timer time for a long time, for example, 7 hours and 30 minutes, the timer increase switch must be turned on many times (at least 21 times). It was inconvenient to have to keep pressing the button.

The present invention was made in view of such problems, and when setting the timer operation time,
It is an object of the present invention to provide a timer device for a cooker that can be set with a relatively small number of operations.

Means for Solving the Problems In order to solve the above problems, the present invention provides storage means for storing the maximum value and minimum value of the timer setting time and the intermediate value thereof, and when the timer increase switch is pressed for the first time. When the timer reduction switch is pressed, the minimum setting time is initialized, when the timer decrease switch is pressed, the maximum setting time is initialized, and when both are pressed at the same time, the intermediate setting time is initialized by the initial determination means.

Effect: With the above-described configuration, it is possible to realize an easy-to-use timer device that can quickly set the timer operation setting time to a desired setting time.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. FIG. 1 shows a block diagram of a timer device according to an embodiment of the present invention, which includes a timer increase switch 11 for increasing the set time of timer operation and a timer decrease switch 12 for decreasing the set time for timer operation. When pressed for the first time, the initial determination means 13 determines which switch was pressed for the first time, or whether two switches were pressed at the same time, and sets the maximum value (for example, 13 hours) and the minimum value (for example, 1 hour) of the timer setting time. Predetermined values of the maximum value storage means 14, the minimum value storage means 15, and the intermediate value storage means 16, which store intermediate values (for example, 7 hours), are initialized in the timer setting means 17. That is, the timer increase switch 11
When is pressed, the minimum value (1 hour) is set, and when the timer decrease switch 12 is pressed, the maximum value (13 hours) is set. Next, timer increase switch 1
1 and the timer decrease switch 12 an arbitrary number of times to set the desired timer time. The set time of the timer at this time is displayed by the display means 18. For example, to set the time to 7 hours and 30 minutes, set the timer increase switch 11 and timer decrease switch 1 to increase or decrease in 10 minute increments.
Press 2 at the same time, then timer increase switch 11
By pressing , you can set 1+3=4 times. Next, when the start switch 19 is pressed, the time set in the timer setting means 17 is
The timer subtraction means 20 starts operating, which subtracts the time according to the elapsed time since 9 was pressed. When the subtracted timer setting time reaches a predetermined time (for example, φ time), the heating means 21 starts a predetermined heating operation and the timer operation ends. That is, when the timer increase switch 11 is pressed, it is the same as in the conventional example, but when pressed as in the above-described embodiment, the timer can be set 17 times less.

FIG. 2 is a circuit diagram of one embodiment of the present invention, and FIG. 3 is a flowchart showing the operation.

In FIG. 2, 22 is a so-called one-chip microcomputer, which is composed of input/output terminals, ROM, RAM, and CPU.

When the timer increase switch 11 or timer decrease switch 12 is pressed, it is determined in step 1 whether it has been pressed for the first time, and if it is pressed for the first time, it is determined in step 2 whether the timer increase switch 11 has been pressed, and if it has been pressed, it is determined in step 3. Set the minimum timer setting time. On the other hand, when the timer decrease switch 12 is pressed, the maximum value is set in steps 4 and 5, and when both are pressed at the same time, an intermediate value is set in steps 6 and 7, and the resulting set time is displayed in step 8. 18 (for example, LCD). Next, the timer time desired by the user is set by arbitrarily pressing the timer increase switch 11 and timer decrease switch 12 as shown in steps 8 to 13.

Next, when the start switch 19 is pressed, a judgment is made in step 14, and in step 15, the timer setting time is subtracted according to the elapsed time, and the result is displayed on the display means 18 in step 16. When a predetermined time has elapsed in step 17, the heating operation is started in step 18, and the timer operation ends. That is, after a predetermined period of time has elapsed, the transistor 23
is driven, the relay 24 is operated, and the heater 25 is energized to heat the object to be heated 26 (for example, a pot). After that, in the case of a rice cooker, the center thermostat (not shown) stops the power supply to the heater 25.

Effects of the Invention As described above, according to the present invention, a timer device that can easily set the timer time can be realized, and is extremely useful in practice.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a timer device for a cooker showing an embodiment of the present invention, FIG. 2 is a circuit diagram of the timer device, FIG. 3 is a flowchart for explaining the operation of the timer device, and FIG. The figure is a block diagram of a conventional timer device. 11...Timer increase switch, 12...Timer decrease switch, 13...Initial determination means, 14
...Maximum value storage means, 15...Minimum value storage means,
16...Intermediate value storage means, 17...Timer setting means, 18...Display means, 19...Start switch, 20...Timer subtraction means, 21...Heating means, 22...Microcomputer.

Claims (1)

[Claims] 1. A timer increase switch that increases the set time of the timer operation, a timer decrease switch that decreases the set time of the timer operation, an initial determination means that determines that the timer increase switch or the timer decrease switch is pressed for the first time, and a timer. Maximum value storage means, minimum value storage means, and intermediate value storage means that store the maximum value and minimum value of the set time and a predetermined intermediate value thereof, and the maximum value storage means, minimum value storage means, and intermediate value. According to the output of the storage means, when the timer increase switch is pressed for the first time, the minimum value of the timer setting time is set, when the timer decrease switch is pressed for the first time, the maximum value of the timer setting time is set, and the timer increase switch and the timer are set for the first time. A timer setting means for setting an intermediate value of the timer setting time when the decrease switches are pressed at the same time, a display means for displaying the time set by the timer setting means, and a start switch for starting the timer operation. a timer subtraction means for subtracting the set time of the timer setting means according to the elapsed time when the start switch is pressed; and a timer subtraction means for subtracting the set time of the timer setting means according to the elapsed time, and when the value of the timer setting means subtracted by the timer subtraction means reaches a predetermined time. A timer device for a cooker comprising a heating means for starting a heating operation.