JPS6153078B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a washing machine control device having a function of automatically correcting imbalance during dewatering.

Examples of the present invention will be demonstrated below. First, the first
The basic configuration of the present invention will be explained based on the drawings and FIG.

The output of the unbalance detection means 1, which detects the unbalance of the cloth by means of a switch that operates when the dewatering tank of the washing machine is deviated by more than a certain level, is inputted to the control circuit 2 composed of, for example, a microcomputer, and the unbalance detection means With the output of 1,
If it is detected that the cloth is in a balanced state, execute the loop b in Figure 2 and
Based on the output of the operation progress storage means provided in the control circuit 2 shown in the figure, it is determined whether the dehydration step is 1 dehydration step, in which dehydration is performed intermittently, or the dehydration 2 step, in which dehydration is performed continuously.If dehydration 1 is selected, for example , the load driving means 3 consisting of a transistor and a bidirectional three-terminal control temperature control element is operated, the draining means 4 is operated for a certain period of time, and the motor 5 is continuously operated during that period.

In the case of dewatering 2, the drain means 4 and the motor 5 are continuously operated for a certain period of time, and after the certain period of time, the dewatering is completed.

At this time, if the imbalance detection means 1
If the control circuit 2 determines that the cloth is in an unbalanced state based on the output of
The loop a is executed, and the operation progress storage means provided in the control circuit 2 shown in FIG. Remember. Then, after operating the unbalance correction number counting means provided in the control circuit 2 and consisting of, for example, a counter, if the number of times is less than or equal to a certain number (three times in this embodiment), the unbalance correction is performed. conduct. At this time, a notification means 6 such as a buzzer is operated for a certain period of time, and after confirming that the return switch 7 does not operate, a corrective operation is performed. That is,
After the water supply means 8 is operated by the load drive means 3, the motor 5 is operated for a certain period of time to correct the lump of cloth in the dehydration tank, and after resetting the contents of the operation progress storage means, the process returns to the beginning of dehydration. . If the return switch 7 is activated after the operation of the notification means 6, dehydration is performed without performing any corrective operation and without resetting the contents of the operation progress storage means. Therefore, if an unbalanced state occurs during spin-drying 2, and the unbalance detection means 1 operates and reports this, if the return switch 7 is pressed, the spin-drying will not occur during spin-drying 1, but if the return switch 7 is pressed,
It will be executed from dehydration 2.

Now, after correcting the unbalance several times during dehydration, if the unbalanced state continues, when the unbalance detecting means 1 is activated (here, N=4), the unbalance cannot be automatically corrected. As a result, the notifying means 6 is operated and the timer T is operated, and if the return switch 7 is operated within a certain period of time _T0 , the dehydration operation is continued based on the instruction of the operation progress storage means. if,
If the return switch does not operate even after a certain period of time has elapsed, the power supply holding means 9, which is comprised of a transistor and a relay controlled by the load driving means 3, is operated.

FIG. 3 shows an electrical circuit diagram of the control device, and 10, which is a part of the operation progress storage means constituted by the F/F provided in the control circuit 2, has an output of The output is set to the V _DD side (hereinafter referred to as 1), and its output is sent to the driver 14 through an OR gate 12 and an AND gate 13.
...18 and bidirectional three-terminal control rectifier element 19...
This is transmitted to the load control means 3 consisting of 21, and as a result, the drainage means 4 is operated. On the other hand, the output of 10 is
It is input to the AND gate 22. AND gate 22
The output of the timed reference oscillation circuit 24 which is oscillated by the crystal oscillator 23 is input to , and therefore, during the period when 10 is 1, the output of the AND gate 22 is the same as the output of the timed reference oscillation circuit 24. , the output of the oscillation circuit 24 is input to the counter 25. After counting a certain number, the counter 25 outputs 1 from φ, and the output is transmitted to 26, which is a part of the operation progress storage means.
Set the output of φ→1. Due to this output, the output of 10 is inverted via the OR gate 27 and changes from 1 to φ.

The output of the AND gate 22 is input to the 1/n frequency divider 28, and the 1/n output is input to the load control means 3 via the OR gate 29 and the AND gate 30. The output causes the motor 5 to operate intermittently.

Now, when the output of counter 25 becomes 1, the output of 10 becomes φ as described above, the outputs of AND gate 22 and OR gate 12 become φ, and 22 becomes φ.
The output of the OR gate 29 also becomes φ, and as a result, the power to the drainage means 4 and the motor 5 is cut off.

On the other hand, since the output of 26 has become 1, the OR gates 12 and 29 are set to 1, and as a result, the drainage means 4 and the motor 5 are energized again. Further, the output of 26 is input to an AND gate 31, and therefore the output of the oscillation circuit 24 is input to a counter 32 via the AND gate 31. When the counter 32 counts a certain number, it inverts its output from φ to 1, and its output is input to an OR gate 33, and the output of this OR gate 33 is input to the reset terminal of 26, which resets 26. and set its output to φ. Therefore, the power supply to the drainage means 4 and the motor 5 is stopped.

Now, by the time 26 is reset, the dehydration tank 34
is biased, and when the unbalance switch 1, which is the unbalance detection means, is closed, the output of the unbalance detection means 1, which has been at the ground level φ by the resistor 35, is reversed to the V _DD side, that is, 1, and is read at the rising edge. Input to DF/F36, φ→1
When the output rises to 1, this output becomes 1. This output is inputted to the reset terminals 10 and 26 via the AND gate 37 to reset the respective outputs. On the other hand, it is input to the reset terminals of counters 25, 32 and 1/n frequency divider 28, each of which is reset, and its output is reset to φ. As a result, the drainage means 4 and the motor 5 stop operating.
On the other hand, the output of DF/F 36 is input to AND gate 38. The output of a water level switch 39 that detects the water level in the dehydration tank 34 is input to this AND gate 38 . Since the water level switch 39 is open while the water level is low, the resistance 40 causes φ.

If the water level is now above a certain level, turn on the water level switch 3.
9 is closed, so its output becomes 1, and as a result, the output of the AND gate 38 appears, its output is input to the counter 39, and the output is input to the counter 55.
is φ until a certain number is counted. While the output of the counter 55 is φ, if the water level switch 39 is closed, the water supply means 8 is operated via the AND gate 56, and if the water level switch 39 is open, the output of the inverter 41 is 1. Therefore,
The output of the AND gate 42 also becomes 1, and as a result,
The motor 5 operates via the OR gate 29, the AND gate, and the load control means 3.

When the output of the counter 55 becomes 1, it is inputted to the reset terminal of the DF/F 36 via the OR gate 43, and the output becomes φ and the counter 5
5 is reset, and 10 is also reset, and the output becomes 1, returning to the initial state of dehydration. The output of the DF/F 36 is input to a counter 44 that counts the number of corrections, and the output of the counter 44, which sets the output to 1 at a certain number of times, is input to the DF/F 45, which reads it at the rising edge, so that the number of corrections exceeds a certain number of times. As a result of this, if the output Q of DF/F45 becomes 1, the output of DF/F45 becomes φ, and AND
By setting the outputs of the gates 56, 13, and 30 to φ, the supply of electricity to the water supply means 8, the drainage means 4, and the motor 5 is stopped.

When Q of DF/F45 becomes 1, AND gate 4
The counter 47 is connected to the oscillation circuit 2 via the output of the oscillator 6.
The output of 4 is input. After the counter 47 completes a certain count, its output is inverted so that φ→1, and then, via the driver 18, the power supply holding means 9 stops supplying power to the control device. DF／
The output of F45 is transmitted via the driver 17 to the light emitting diode 48 and the resistor 4 which constitute the notification means 6.
9, the signal is transmitted to the buzzer 50 and the resistor 51, causing them to operate.

In addition, although not detailed in this example,
If a buzzer is issued before correction and the return switch is pressed after a certain period of time, correction is not possible and the user can easily restore the state to the same state as if the user had made the correction and then pressed the return switch.

Note that 53 is a control circuit power supply _VDD , and 54 is a commercial AC power supply.

As described above, according to the present invention, when an imbalance occurs, the operation after automatic correction up to a certain number of times is performed again from the initial stage of dehydration, that is, the draining operation, and if automatic correction is not possible, an abnormality is notified. After the return switch returns, it is possible to carry out the operation after the process where the last unbalance occurred, which reduces fabric damage, shortens washing time and saves electricity at a low cost, and can handle various unbalances. It is extremely easy to use. Furthermore, if you add a function that notifies you for a certain period of time before the automatic correction operation, and if the return switch operates during that time, it is assumed that the manual correction has been made, and that the automatic correction is not executed and the operation is performed after the unbalance generation process. Needless to say, it will be even more effective.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of a control device in an embodiment of the present invention, FIG. 2 is a flow chart for explaining its operation, and FIG. 3 is a specific circuit diagram thereof. DESCRIPTION OF SYMBOLS 1... Unbalance detection means, 2... Control means, 3... Load drive means, 4... Drainage means, 5...
...Motor, 6...Notification means, 7...Return switch, 8...Water supply means.

Claims (1)

[Claims] 1. A washing machine control device having a control circuit having an unbalance detection means for detecting an unbalanced state of cloth in a dehydration tank and a return switch therefor as input, and an output section for driving a water supply means, a drainage means, and a motor. The control circuit stores the water supply means, the unbalance correction means for controlling the motor, the unbalance correction number counting means for counting the number of unbalance corrections by the unbalance correction means, and the operation progress details of the process so as to eliminate the unbalanced state. The control circuit operates the unbalance correction means and the unbalance correction number counting means during dewatering according to the output of the unbalance detection means, and the unbalance correction number counting means counts the number of unbalance corrections. If the count is less than a certain number, the operation progress storage means is reset to the initial stage of the dehydration process, and the subsequent steps are continued based on the contents of the operation progress storage means, and if the count is more than a certain number, an alarm is issued. Control of a washing machine characterized in that the means is configured to notify an abnormality, and the return switch stops the abnormality notification and executes the contents of the operation progress storage means after the point at which the imbalance occurs. Device.