JP2840397B2 - Control method of automatic washing machine with reservation function - Google Patents

Description

The present invention relates to a control method of an automatic washing machine with a reservation function mainly used in ordinary households.

(B) Conventional technology In an automatic washing machine, if an abnormal vibration due to a deviation of the cloth is detected during dehydration, the dehydration is stopped, water supply and agitation are corrected, and the operation is stopped halfway. I'm preventing. Since the water supply time and the drainage time change depending on the state of the water supply pressure of the water supply, in the case of a reserved operation in which the reservation end time is set, the calculation of the operation start time is based on the operation time that is calculated. To calculate the operation start time. Therefore, even if the imbalance is corrected about once, the operation can be completed at the reserved time.

However, if the imbalance correction is performed a plurality of times, the operation time becomes longer, and it becomes difficult to end the operation at the reservation end time. In contrast, as disclosed in Japanese Patent Application Laid-Open No. 57-55195, when abnormal vibration is detected only in final dehydration, without imbalance correction, an abnormality is notified and the operation is stopped. It is desirable to correct the imbalance and terminate the operation without any trouble for the user.

Further, in an automatic washing machine, since the time of water supply and the time of drainage change depending on a change in tap water pressure and a setting state of a drain hose, there is a difference between an operation time that can be calculated in advance and an actual operation time.

So, if you set an operation end time with a washing machine with a reservation function and make a reservation, even if the time of water supply and drainage becomes longer, the operation will be completed at the reserved time,
The operation start time is a time calculated by subtracting the operation time and the spare time from the reservation time, and the operation is started earlier. For this reason, it is common that the driving ends before the reserved time. Therefore, as described in Japanese Patent Application Laid-Open No. 63-270096, even if the operation ends earlier than the reserved time, the end buzzer may be at the reserved time.

(C) Problems to be Solved by the Invention Even if the operation ends much later than the reserved finish time as described above or ends too early, the user may misunderstand that the washing machine has failed. is there.

The present invention has been made in view of such circumstances, and an automatic washing machine with a reservation function that prevents a user from misunderstanding that a washing machine has failed due to the end of operation at a reserved finishing time. Is provided.

(D) Means for Solving the Problems The present invention automatically performs a washing process including washing, rinsing, and dewatering, and when abnormal vibration of a dewatering tub is detected during dewatering, water supply and stirring by a washing blade are performed. In the control method of an automatic washing machine with a reservation function that performs the imbalance correction of the laundry, the operation is started from the time obtained by subtracting the required time for the washing process from the reserved finishing time, and the dehydration tub is abnormal at the time of dehydration. When the vibration is detected, the time from the time at that time to the finishing time is calculated, and if this time is shorter than the time until the imbalance correction is performed and the final dewatering step is performed, an abnormal condition is detected. To inform,
In the case of a long time, the process is performed until the final dehydration step after correcting the imbalance without performing the abnormality notification.

According to the present invention, when abnormal vibration of the dewatering tub is detected during dewatering, if an imbalance correction is made and the operation end time exceeds the reserved finishing time, an abnormality notification is performed and the finishing time is passed. When there is no abnormality notification, the process is performed up to the final dehydration step after performing the imbalance correction without performing the abnormality notification.

(F) Embodiment Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. This does not limit the present invention.

FIG. 1 is an electric circuit diagram of an automatic washing machine with a reservation function showing one embodiment of the present invention. In the figure, 1a, 1b and 2
a is a triac that drives a motor 1, a water supply valve 2, a drain valve 3, etc., 4 is a drive circuit for triacs 1a, 1b and 2a,
5 is a key matrix operated by the user, 7 is a driver circuit 7 for driving the display liquid crystal panel 6a and LED 6b, 8 is a water level sensor for detecting the water level of the washing machine, 9 is a switch for checking the opening and closing of the lid of the washing machine, Reference numeral 10 denotes a microcomputer for controlling, and reference numeral 11 denotes a power supply circuit for supplying power to the circuit.

FIG. 2 is a top view showing the operation panel. Describe the operation example of reservation setting. By pressing the water flow key 21, the water flow can be selected, and the operation time and the number of times of each step can be set by the wash key 22, the rinse key 23, and the dehydration key 24. The water level is set by a water level key (not shown). The current time is the time key 26
When is pressed, the time is set by the hour key 27 and the minute key 28. To reserve the finishing time, press the reservation key 29, and the number on the LCD panel 6a will flash.
7. Set the end time using the minute key 28. Wash key 22,
After setting each operation time and number of times with the rinse key 23, the dehydration key 24, etc., when the start key 25 is pressed, the reservation is completed and the apparatus enters a standby state until the operation start time.

When waiting for reservation, the processing of the flowchart of FIG. 3 is performed. First, the operation time is calculated from the set operation state. This is T1. Even if the time of water supply and drainage becomes longer, a margin time T2 is added so that the operation ends by the end time, and T1 ← T1 + T2. T2 may be a fixed time or T1 multiplied by a certain constant.
Calculate the time T from the current time to the reservation time, if T3
If is smaller than T1, the operation cannot be completed at the reserved time, and an error message is displayed. The time obtained by subtracting T1 from T3 is the remaining time until the start of operation. This time is counted down, and when the remaining time becomes 0, the operation is started. Also, since the operation start time can be calculated by subtracting T1 from the reservation time, a program that starts operation when the current time reaches the operation start time may be used.

Next, in the flowchart shown in FIG. 4, when an imbalance is detected at the time of final dehydration, if the reservation time has already passed, an abnormality is immediately notified and the operation is temporarily stopped. Otherwise, a time T4 from the current time to the reserved time is calculated. The water supply time is 2 minutes, the washing blade stirring time is 1 minute, the drainage time is 1 minute, and the time obtained by adding the final dewatering time is T5, T4
If <T5, an abnormality is notified and the vehicle is in a temporary stop state.
If T4 ≧ T5, the imbalance correction is performed, and the final dewatering process is executed.

The automatic washing machine according to this embodiment calculates the relationship between the current time, the reserved time, and the remaining time of the operation when the abnormal vibration of the dehydration tub is detected, and when it is impossible to finish the operation at the reserved time. Immediately informs the user of the abnormality and suspends the operation. In this way, the user is notified of the current state of washing when the reserved time comes. Therefore, if the user is driving even after the reservation end time comes, the user may feel distrust of the washing machine or may have made an operation mistake by himself.
Although it may be annoying, it can be prevented and at the reserved time the user comes to the place where the washing machine is installed, so it is better to have the user correct the bias of the clothes and start dehydration, Useless water can be prevented.

Next, another embodiment of the present invention will be described. The automatic washing machine of this embodiment is the same as the above-described embodiment except for a part of the operation thereof. The operation will be described in detail with reference to the flowchart shown in FIG.

First, when a reservation operation similar to that of the above-described embodiment is performed on the operation panel shown in FIG. 2, the same reservation standby processing as that of the above-described embodiment shown in FIG. 3 is executed. Next, the fifth
As shown in the figure, when the final drainage is completed, calculate the time T4 from the current time to the reservation time, if the final dehydration time
If T4 is less than or equal to T5, immediately start final dehydration. If T5 <T4, calculate T6 = T4-T5, extend the drainage time by the time of T6, or enter the paused state, and enter the final dehydration after the elapse of T6. Since the dehydration time does not change due to an external factor, the operation can be completed at the reserved time.

The automatic washing machine according to this embodiment calculates the time difference between the reservation end time and the current time after draining before the final dehydration,
Further, when the start of dehydration should be calculated from the set dehydration time, a standby state or a drain state is continued until the time is reached. Dehydration time is
The operation time is not influenced by external factors unlike the water supply time and the drainage time, so if the time is adjusted before the final dehydration, the operation always ends at the reserved time. Therefore, according to this embodiment,
Since you can just finish driving at the reserved time,
The user does not have distrust in the operation of the washing machine. In addition, when the temperature is high, such as in summer, if driving ends too early, the clothes begin to dry and the clothes may become wrinkled, which can be prevented.

(G) Effect of the Invention According to the present invention, if the user is still driving even after the scheduled finish time has arrived, the user feels distrust of the washing machine or suspects that he / she made an operation error. Sometimes, you can prevent that.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram of an automatic washing machine according to the present invention, FIG.
The figure is a top view of the operation panel of the automatic washing machine according to the present invention,
FIG. 3 to FIG. 5 are flowcharts for explaining the main part of the operation of the automatic washing machine shown in FIG. 1 ... motor, 2 ... water supply valve, 3 ... drain valve, 4 ... drive circuit, 5 ... key matrix, 6a ... liquid crystal panel, 6b ... LED, 7 ... driver circuit, 8 ... water level Sensor, 9 Switch, 10 Microcomputer, 11 Power circuit, 1a, 1b, 2a, 2b Triac.

Claims (1)

(57) [Claims] 1. A washing process comprising washing, rinsing, and dehydration is automatically performed. When abnormal vibration of a dehydration tub is detected during dehydration, water is supplied and agitated by a washing wing to correct imbalance of the laundry. In the control method of the automatic washing machine with a reservation function that is performed, the operation is started from a time obtained by subtracting a required time of a washing process from a reserved finishing time, and when abnormal vibration of the dehydration tub is detected during dehydration, Calculate the time from the time to the finishing time, if this time is shorter than the time until the final dehydration step further performing the imbalance correction, perform an abnormality notification, if longer, A method for controlling an automatic washing machine with a reservation function, wherein the process is performed up to the final dehydration step after correcting imbalance without performing abnormality notification.