JPH01124495A - Appliance with reservation timer - Google Patents

Abstract

PURPOSE: To prevent noises of buzzer sounds by preventing a buzzer from being sounded at the end of operation by fetching and storing the information showing a reserved operation at the time of reserved operation. CONSTITUTION: In the case of reserved operation, after a power switch is turned on, current time is set by the switches of time correction 14 and setting 15. When a reservation switch 11 is pressed, a reservation LED 12 is turned on and an auto-on switch is turned into 'OFF' state. Afterwards, reservation time is set by the switches of time correction 14 and setting 15 and when the standard of an external operate button 4 is pressed, reserved operation is started. Before the lapse of a required time, an auto-on switch 16 is automatically turned on, a driving signal from a microcomputer is outputted, the respective processes of set standard cycles are automatically performed and washing is finished but in the case of reserved operation, since a buzzer-off signal is outputted without fail after the reservation switch 11 is turned on, all the processes are finished without sounding the buzzer after the end of washing.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device that uses a buzzer to notify termination, and is particularly suitable for preventing noise during early morning operation by not sounding the termination buzzer during reservation timer operation. Regarding.

[Conventional technology]

In conventional equipment with a reservation timer, the buzzer that notifies the end of operation is sounded both during reserved operation and during normal operation, resulting in noise during early morning operation due to reservation.

[Problem to be solved by the invention]

Conventional reservation timer devices are designed to sound an end buzzer even during reserved operation, and do not take into account noise in the early morning hours when reserved operation is commonly used.

An object of the present invention is to prevent the noise caused by the buzzer sound by creating a program that does not sound the end buzzer during reserved operation.

[Means to solve the problem]

The above object is achieved by creating a program that sounds the end buzzer during normal operation, and by capturing and storing information that it is a reserved operation during reserved operation, so as not to sound the buzzer at the end of operation.

[Effect]

Press the power switch, press the "Time setting" switch 14 and "
After setting the current time using the “Set” switch 15,
When a reservation switch 13 is pressed, a buzzer off signal is stored in a storage area of a microcomputer 8, and when the operation is finished, the buzzer off signal from this storage area is called out, and all outputs are turned off without sounding the buzzer to end the operation.

〔Example〕

An embodiment of the present invention will be described below.

Figure 1 shows the control panel of the washing machine, with the power ON/OFF switch 2. Pressure switch that detects the water level in the washing tub 3. External operation switch 4, 59 Hour display section 13. Reservation switch 11゜Reservation LED 12. Time setting switch 14 for setting the time. Set switch 15. A progress display LED 6 is installed. Figure 2 shows a block diagram of the washing machine's control board.

Next, its operation will be explained.

When the pressure switch 3 is set to a water level corresponding to the amount of clothing (for example, a low water level) and the power switch 1 is pressed to turn it on, power is supplied to low-power circuits such as a microcomputer and an LED display circuit. At this time, the power switch 2 is turned on if the external operation switches 4 and 5 are not pressed within 5 minutes.

The solenoid 7 is energized and the power switch 2 is automatically turned off.
It has a FF structure.

For normal operation without reservation, external operation switch 1
If the start/-time stop switch 16 is pressed for 3 seconds or more before pressing 5, the buzzer off signal will be stored in the microcomputer's RAM. Even if you press this start/stop switch 16 before pressing any other switch, the microcomputer will turn on the LED.
This is a switch that does not perform any operation or other processing. Next, when the standard switch is pressed, the auto-on switch 1G is turned on, washing for 10 minutes, rinsing twice, and dehydration for 5 minutes are set, the water supply valve is energized, and water supply begins, followed by stirring and rinsing.

After each dewatering process is automatically operated and washing is completed, if the machine is left as it is for more than 5 minutes, the solenoid 7 is energized and the power switch is automatically turned off, just like when the power switch is in the "on" state.

Next, in the case of scheduled operation, after turning on the power switch,
Setting the time 14. After setting the current time using the switch in set 15 (e.g. 8:00 p.m.).

When the reservation switch 11 is pressed, the reservation LED 12 lights up and the auto-on switch is turned off. After this, time setting 14. A reserved time (washing end time) is set on the switch of the set 15, and when the standard button on the external operation button 4 is pressed (for example, 7 a.m.), the reserved operation is started. At this time, from 8:00 pm to 6:28 am (because the standard cycle requires about 32 minutes and the washing starts at 6:28 am), the reservation is on standby, and the reservation time and time are displayed. I am doing a count. At this time, the auto-on switch is OFF
The high-voltage circuit is cut off.

At 6:28 a.m., the auto-on switch 16 is automatically turned on, the high-voltage circuit is connected to the power supply, and then a drive signal is output from the microcomputer, and the set standard cycle (washing 10 minutes, rinsing 2 times, spin-drying 5 Each step (minutes) is automatically carried out and the washing ends, but when using the reservation operation, the reservation switch 1
Since the program is configured to always output a buzzer off signal and store it in the RAM after the processing when 1 is turned on, the buzzer does not sound after washing is completed and all outputs are turned off and the entire process is completed. The lid switch 10, which is turned ON and OFF by opening and closing the lid, is normally OFF when the lid is closed. While waiting for a reservation, the auto-on switch 16 is OFF, so even if the lid switch 10 is ON, no output is generated in the sensor intake circuit, and the microcomputer 8 always reads that the lid switch is OFF. If it is ON during the reservation standby due to welding of the contacts, etc., the lid switch 10 is in the ON state and the microcomputer 8 reads it and determines that there is an abnormality, and the auto-on switch 16 displays an abnormality by blinking the progress display LED 6.

In this embodiment, the auto-on switch 16 has a structure in which a switch having mechanical contacts is operated by a solenoid, which is a weak point of the electronic circuit. It is designed to not be destroyed by external noise, lightning surges, etc., making it ideal as a highly reliable safety circuit.In addition, the contact person who opens and closes the high-voltage circuit and the solenoid in the drive part can be easily electrically separated, ensuring electrical safety. This has the advantage of being able to improve the performance and the safety circuit, making it possible to create a highly reliable and inexpensive safety circuit.

In the present invention, the operation is started after manually setting each process such as "washing", "rinsing", "dehydration j", etc.Alternatively, the start/stop switch used to temporarily stop the operation during operation can be activated. However, if it is a switch that does not input the switch input to the microcomputer even if it is pressed after the power switch is turned on, use another switch, such as the time setting switch 14.
It may also be done by

In this embodiment, the buzzer is turned off only when the button is pressed for 3 seconds or more, which has the effect of eliminating malfunctions caused by erroneous pressing.

Furthermore, by pressing the start/-time/stop switch 16 several times at short intervals, it is possible to have the same function as pressing it continuously for 3 seconds or more.

Also, when opening and closing the auto-on switch, the heavy current load is ○F.
Since it is in the F state, there is no need to cut off the current when opening and closing, and a switch with a low rating can be used, resulting in an inexpensive switch. Also.

In the case of mechanical contacts, this has the effect of preventing welding of the contacts due to arcing.

〔Effect of the invention〕

According to the present invention, during reserved operation, the operation can be terminated without sounding the end buzzer, so that it is possible to prevent buzzer noise during early morning operation.

[Brief explanation of the drawing]

FIG. 1 is a panel section of a fully automatic washing machine according to an embodiment of the present invention, FIG. 2 is a block diagram of a controller of the present invention, and FIG. 3 is a flowchart of the buzzer "off" function of the present invention.

Claims (1)

[Claims] 1. For equipment with a reservation timer that allows you to reserve the start or end time of equipment operation, the end buzzer will sound to notify the end of operation during normal operation, but the end buzzer will not sound during scheduled operation. A device with a special reservation timer.