JPH0817869B2 - Fully automatic washing machine controller - Google Patents

Description

Description: TECHNICAL FIELD The present invention sequentially and automatically executes various steps such as washing, draining, rinsing, and dewatering according to a predetermined program, and an amount of load applied to a motor in an intermittent dewatering step. The present invention relates to a controller for a fully automatic washing machine, which is configured to automatically detect and control the dehydration time, rinse time, and rinse water flow.

2. Description of the Related Art Conventionally, this type of fully automatic washing machine is operated and executed according to a preset program, but the washing process and the rinsing process are operated at the same set water flow, and the dehydration time and the rinsing time are operated at preset times. It was something to do.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In such a conventional configuration, for example, when the amount of laundry is less than the rated capacity of the washing machine, it is rinsed after operating in a strong water flow to ensure washing performance in the washing process. In the process, since it is originally a rinse, a weak water flow such that the laundry rotates in the washing tub is sufficient, but it is operated with the same unnecessary strong water flow as in the washing process and the laundry is damaged,
It had the problem of being entangled.

Further, the rinse time and the dehydration time are preset so that each performance is satisfied at the rated capacity of the washing machine. Therefore, with a small capacity, it is unnecessarily long and the operation time to the end is too long. He also had points.

In view of the above problems, it is an object of the present invention to control the rinsing process and the dehydrating process according to the amount of laundry to prevent damage and entanglement of the laundry and to shorten the operation time.

Means for Solving the Problems In order to achieve the above object, the present invention provides a motor for rotationally driving a washing / dehydrating tub, a motor rotation detecting means for detecting the rotational speed of the motor, the motor and each load. And a control means for controlling the washing, rinsing, and dehydrating steps, wherein the control means intermittently drives the motor after the washing step and after the rinsing step to perform intermittent dehydration, and at the time of the intermittent dehydration, The time until the output from the motor rotation detecting means reaches a predetermined value is measured, and the rinsing process and the dehydration process after the intermittent dehydration are controlled by comparing the measured time with a preset reference detection time, and the washing process. The reference detection time for intermittent dehydration after completion and the reference detection means for intermittent dehydration after completion of the rinsing step are changed and set.

Action With this configuration, the load amount is detected by comparing the time until the number of rotations of the motor reaches a predetermined value with the reference detection time, and the rinse water flow is set according to this load amount. Can prevent the damage and entanglement of
Moreover, since the rinsing time and the dehydration time are set according to the load amount, the time can be shortened. Further, the intermittent dehydration time after the washing process and the intermittent dehydration time after the rinsing process are changed to perform efficient intermittent dehydration. Since the reference detection time for intermittent dehydration and the reference detection time for intermittent dehydration after the rinsing process are set differently, the load amount can be accurately detected even if the intermittent dehydration time is changed. The rinse water flow, rinse time, and dehydration time can be reliably set.

Example Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the control device for the fully automatic washing machine in this embodiment has a motor 2 connected to an AC power source 1, and the motor 2 has a capacitor 3 connected between windings. Further, as a load connected to the AC power source, there are a drainage solenoid 4 and a water supply solenoid 5. The motor 2 is controlled by switching means 6a, 6b for forward / reverse rotation control, and at the time of dehydration, the drainage solenoid 4 which is interlocked with the brake clutch is driven by the switching means 6c, and when the switching means 6a is driven, dehydration is started. The switching means 6d drives the water supply solenoid 5. The switching means 6a to 6d are controlled by the control circuit 7 including a microcomputer. The motor rotation detection circuit 8 connected to both ends of the capacitor 3 detects the capacitor terminal voltage and detects the motor rotation speed. In addition, the control circuit 7
Is connected to an operation display input circuit 9 including a key switch and a display section.

As shown in Fig. 4, the program of the fully automatic washing machine normally turns on and off the power supply to the motor 2 intermittently in the dehydration (1) after the washing process and the drainage process to gradually increase the dehydration rotation speed. The intermittent dewatering (1) of raising is to improve the rinsing performance by squeezing out as much foam as possible contained in the washing / dehydrating tank and the laundry in the initial stage. Therefore, it is generally longer than the other intermittent dehydration (2) and intermittent dehydration (3), and continuous dehydration is provided after the intermittent dehydration.

The relationship between the capacitor terminal voltage V _C of the motor 2 and the time T during dehydration is as shown in FIG. In the figure, A is for dehydration (1), and B is for dehydration (2). In addition,
As the spin speed increases, the capacitor terminal voltage V _C
Is generally known to have a similar relationship and has a correlation, and the number of revolutions of the motor 2 can be detected by this capacitor terminal voltage V _C.

Next, control in the dehydration step will be described with reference to FIG. First, in step 701, it is determined whether the AC power supply 1 is 60 Hz or 50 Hz, and if it is 60 Hz, the flow proceeds to step 702 and subsequent steps, and if it is 50 Hz, it proceeds to step 715 where the same processing for 50 Hz as in step 702 and later is performed. . If it is determined in step 703 that the dehydration is intermittent (1), the timer T is started in step 704 and the capacitor terminal voltage V _C reaches the preset reference capacitor terminal voltage V ₀ by the motor rotation detection circuit. 8, the time t _{11 up} to that time is detected, and the time t ₁₁ is detected by the preset reference detection time T
_{When 11} and T ₁₂ are compared with Steps 705 and 706, and if t ₁₁ <T ₁₁ , dehydration rises quickly, so the load amount is small, and therefore in Step 710, dehydration (1) and rinse (10)
Shorten the dehydration time and rinsing time and weaken the rinsing water flow. Alternatively, if T ₁₁ ≤t ₁₁ <T ₁₂ , then step 711
If T ₁₂ ≦ t ₁₁ , the process proceeds to step 712, and the dehydration time, rinse time, and rinse water flow are operated according to the load amount.

In the case of intermittent dehydration (1) and intermittent dehydration (2) with a different operating time, step 707, 708 or step 709.
Proceed to and, as before, the reference capacitor terminal voltage V ₀
Until the time t ₂₁ up to the reference detection time T ₂₁ , T ₂₂ corresponding to the operation time of the intermittent dehydration (2)
Proceed to any of 1,712 to operate according to the load. The above-mentioned 715 50 Hz processing is also the same as 60 Hz processing, and only the reference detection times T ₁₁ , T ₁₂ or T ₂₁ , T ₂₂ are different due to the difference in starting by the motor at 60 Hz and 50 Hz. is there.

Effect of the Invention As described above, according to the present invention, the load amount is detected by the time until the number of rotations at the time of intermittent dehydration start reaches a predetermined value,
Since the rinse water flow is set and operated according to this load amount, damage and entanglement of the laundry can be prevented, and the rinse time and dehydration time are also set and operated according to the load amount. Without driving unnecessarily long,
The time can be shortened. Furthermore, since the reference detection time is made to correspond to the intermittent dewatering operation time before the dewatering, the rinsing water flow, the rinsing time, and the dewatering time can be reliably set according to the load amount. Further, since the load amount is detected in the intermittent dehydration after each washing and rinsing process, if the load amount is increased by adding clothes during the rinsing process, the intermittent dehydration after the first rinse process is completed. The load amount can be detected again, and the rinse time after the second rinse can be optimized according to the load amount.

[Brief description of drawings]

FIG. 1 is a block diagram of a controller for a fully automatic washing machine according to the present invention, FIG. 2 is a relationship diagram between the capacitor terminal voltage and time, FIG. 3 is a flow chart in the dehydration process, and FIG.
The figure is a diagram showing a program of the fully automatic washing machine. 2 ... Motor, 3 ... Capacitor, 6a-6d ... Switching means, 7 ... Control circuit, 8 ... Motor rotation detection circuit.

Continuation of the front page (56) References JP-A-61-94696 (JP, A) JP-A-61-238294 (JP, A) JP-A-61-234894 (JP, A)

Claims (1)

[Claims] 1. A motor for rotating and driving a washing / dehydrating tub, a motor rotation detecting means for detecting the number of rotations of the motor, a control means for controlling the motor and each load, and controlling a washing, rinsing and dehydrating process. After the washing step, the control means intermittently drives the motor after the rinsing step to perform intermittent dewatering, and at the time of the intermittent dewatering, the output from the motor rotation detecting means reaches a predetermined value. The time is measured, and the rinsing process and the dehydration process after intermittent dehydration are controlled by comparing the measured time with a preset reference detection time, and the reference detection time for intermittent dehydration after the washing process and after the rinsing process are completed. A controller for a fully automatic washing machine that changes and sets the reference detection time for intermittent dehydration.