JPS58124488A - Operation of washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention detects a change in the turbidity of a rinsing liquid based on the amount of light emitted from a light emitting element received through the rinsing liquid,
The turbidity is measured at the beginning and end of each step, and the turbidity is kept at an optimal state by repeating the turbidity until the amount of change decreases and reaches a constant value. This is what I did.

In the rinsing process of conventional automatic washing machines, the number of rinsing cycles varies depending on the difference between the standard wash cycle and the economical wash cycle.
The time required for each step is different, but in each case the time for each step is
The same number is set in advance by a timer, so when there is a large amount of cloth or thick material, it is difficult to mix it sufficiently, and it is difficult to mix it sufficiently.
I'm in a state where I can't do it. The job was finished. On the other hand, when the amount of cloth is small or the material is thin, it will be stirred well, but after a certain period of time, the concentration of the rinse solution will remain constant and will not change, so even if you continue stirring it, it will not change. There was a drawback that the effect was not improved.

Also, even when rinsing once is enough, you end up doing it 2 or 3 times, wasting your time. The disadvantage is that it cannot be controlled properly.

The present invention performs good overflow control, and an embodiment thereof will be described in detail below.

In FIG. 1 showing the schematic structure of a washing machine, 1 is the main body, 2
3 is an outer tank suspended from the main body 1; 3 is an inner tank for washing and dehydrating clothes; during dehydration, this inner tank 3 is rotated by a motor 4 attached to the bottom of the outer tank 2; A pulsator 6 is rotated by the motor 4. 6 is a detector attached to the bottom of the outer tank 2.

As shown in FIG. 2, the detector 6 is provided with a light emitting element 7 made of an infrared light emitting diode and a light receiving element 8 made of a phototransistor facing each other. Between.

The structure allows washing liquid and rinsing liquid to freely enter and exit.

Next, the operation will be explained in detail.

During the sugi process, after the water supply is finished, stirring is performed by the balse 5, but the sugi liquid gradually becomes cloudy due to the detergent liquid that has soaked into the cloth, and the turbidity increases over time. reaches saturation. It detects the full saturation of this turbidity and ends the cycle.

The turbidity of the liquid is detected based on the amount of light emitted from the light receiving element 7 received through the rinsing liquid. In other words, as the turbidity increases, the output voltage v of the detector 6 increases.

This is a phenomenon in which the amount of energy decreases.

As shown in FIG. 3, which shows the relationship between the time column and the output voltage To in the scrubbing process, the output voltage vO is measured at fixed time intervals t after the start of the scrubbing process and compared with the measured value of %+ji1 stage. /llj degree change △Vn(2Vn-Vn+
1) Continues the rinsing while it is larger than a preset value, and ends the rinsing when it becomes smaller, that is, when the turbidity of the rinsing liquid reaches saturation.

Also, the output voltage v1 of the detector 6 at the start of sagging is
difference from the output voltage Vn of the detector 6 at the end of the process.

In other words, if the value of vA = v, -vn is greater than the set value, rinsing is performed after the next process, that is, the drainage process and the dewatering process, and if it is below the set value, the rinsing process is not performed thereafter. The next process of draining water and the final dehydration process are carried out.

In Fig. 3, curve 5 is the detector 6 at the time of the first drop.
Curve B shows the change in the output voltage of the detector 6 at the time of the second N-pass.

The time indicated by the solid line is the 5-rinse time for that cycle, and the dashed-dotted line indicates the change when the cycle is continued. Therefore, the amount of cloth, water level, and amount of laundry You can rinse according to the type and amount of detergent.
In addition, the rinsing time after washing is long, and as the number of rinsing increases, the rinsing time becomes shorter, allowing optimal rinsing and reducing the turbidity of the rinsing solution each time. Measure until the i'lJ5 degree change is a small change, that is,
This process is repeated until the water reaches the same transparency as the water used during water supply, allowing for effective water control.

As described above, the present invention detects changes in the transparency of the rinsing liquid over time until the difference between the output voltage at the start of rinsing and the output voltage at the end of rinsing becomes a constant value. This is a dog of industrial value that enables effective sagging control by repeating the sagging process.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a fully automatic washing machine according to an embodiment of the present invention, Fig. 2 is a control circuit diagram of a detector in the same washing machine, and Fig. 3 is an output of the detector in the washing process. FIG. 6...Detector, 7...Light emitting element, 8.
...Receiving elements Figure 1, Figure 21! f

Claims (1)

[Claims] It is characterized by repeating the process until the difference between the output voltage at the start of the rinse and the output voltage at the end of the rinse by a detector that detects changes over time in the transparency of the rinse solution becomes a constant value. How to operate a washing machine.