JPS62719B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating method of a fully automatic washing machine and the fully automatic washing machine, and particularly to a fully automatic washing machine that automatically sets the water level and various related settings. The present invention relates to a fully automatic washing machine that has a computerized so-called timer device that temporarily stores various settings inside the computer and uses the stored settings for calculations during automatic operation.

The operation commands in current fully automatic washing machines are based on programs set by a group of cam switches, but the programs are therefore fixed, making it difficult to complicate applied operations and control.

On the other hand, if you use a computer such as a microcomputer to program and digitize the timer device, it will be possible to exchange information with the washing machine itself, making it easier to use and allowing you to create programs with optimal conditions. Therefore, efficient and smooth operation can be expected.

In the above-mentioned electronically controlled washing machines, if you want to use a microcomputer to instruct the conditions for setting the water level and completing rinsing, it is necessary to transmit the information that is the source of the instructions to the microcomputer. The following technical issues arose.

(a) In order to capture information from the sensor (sensing section) and process it accurately, it is necessary to treat the measured quantity as an absolute quantity, and in order to improve the accuracy of absolute quantity measurement, zero point adjustment is required. In the case of home appliances such as washing machines, it is impossible to ask the user to make complex adjustments every time they are used, and there is an urgent need to develop a simple zero-point adjustment system.

(b) Although there have already been several published examples of how information captured using sensors can be effectively utilized, no concrete and realistic studies have been conducted on how to utilize sensor input. Therefore, there is a need to consider effective ways to use it.

SUMMARY OF THE INVENTION In response to the demands under the above circumstances, it is an object of the present invention to provide a rinsing sensor and its liftware that can be easily corrected.

The operating method of the present invention is characterized by establishing software for correcting the values of the main sensors, with consideration given to the procedure and configuration. Although the basic method of measuring detergent concentration is well known, the process is completely new, and its procedure and structure overcome the shortcomings of the conventional method in order to simplify it.

Detergent concentration is detected by the conductivity of water, but since it is greatly affected by water temperature, type of detergent, and water quality, many corrections are required. For example, to correct for water quality, multiple electrodes were installed to perform simultaneous comparisons. As a result, the device was large-scale and costly, making it impossible to put it to practical use as a home appliance. In this respect, the invention solves these problems by using only one set of electrodes and the procedure and configuration.

FIG. 1 is a block diagram of the present invention. 10 is an inner tank, and a pulsator 20 is located in the center. 30
Reference numeral 40 indicates an outer tank, and 40 a drive unit that rotates the pulsator 20 during washing and rotates the inner tank 10 during dehydration. The outer tank 30 is elastically supported by the outer frame 50 at four locations. A hanging rod 7 rotatably locked to a corner plate 60 fixed to the four corners of the upper end of the outer frame 50
The collar of the outer tank 30 is suspended by a vibration-proof spring 80. 110 is a solenoid valve for water supply. 1
20 is an auxiliary electromagnetic valve. Auxiliary solenoid valve 1
20 to the supply water pipe 130, solenoid valve 110
It is connected to the main water supply pipe 140 by. Supply water pipe 1
Considering that the outlet 30 is between the inner tank 10 and the outer tank 30,
The outlet of the main water supply pipe 140 faces into the inner tank 10. An electrode 150 is arranged at the bottom of the outer tank 30. The electrode 150 is inserted and fixed into a cap 160 (shown in FIG. 2), and the cap 160 is adhesively fixed to a hole in the outer tank 30. The upper part of the part where the electrode 150 is installed is an air chamber 180, which is connected to a pressure switch 200 through a vinyl tube 190 from the side wall of the chamber.

With the above configuration, the operation procedure will be explained using an example.

(1) Put laundry and detergent into the inner tank 10.

(2) When the start SW is input, first the auxiliary solenoid valve 120 is turned on, and water supply from the makeup water pipe 130 is started.

(3) The supplied water collects in the outer tank 30 and the electrode 15
When the 0 position is reached, the auxiliary solenoid valve 120
Turn off.

(4) Measure the conductivity of fresh water with the electrodes and process it with a conversion circuit to temporarily store it in the memory of the microcomputer.

(5) Store the conductivity of fresh water in the microcomputer.

(6) The solenoid valve is turned on and water is poured into the center of the inner tank 10 to dissolve the detergent.

(7) Fullness of water can be determined by detecting the pressurization caused by water by the amount of change in volume of the air chamber 180 and turning off the electromagnetic valve.

(8) Next, the washing operation of rotating the pulsator 20 is started. Measure the conductivity again after 2-3 minutes, subtract the value of fresh water from the obtained number and store.

In FIG. 1, an electrode 150 protrudes from the inner wall of the outer tub 30 where the washing liquid is collected, and the concentration of the washing liquid can be detected by measuring the conductivity between the two electrodes. A method of determining rinsing using conductivity is known, but this method has the following limitations.

(1) Because conductivity changes significantly depending on water quality,
It was necessary to constantly compare and correct the conductivity of clean water and the conductivity of rinsing liquid.

(2) When rinsing is nearing completion, the detergent concentration decreases and measurement errors mask the data, making it difficult to obtain good data.

(3) Since the conductivity changes depending on the temperature, treatment for guarantee is required.

In the present invention, the conductivity of fresh water can be corrected and obtained using the procedure shown above.

Once the water has been supplied to the electrode 150, it will be necessary to stop the water supply, drain the water, and wash the inside, but I will not specifically discuss this issue this time.

Electrical conductivity is measured as the leakage current between the electrodes and is
The data is stored inside the MPu (microcomputer) through the process shown in the figure. In Fig. 3, the sensor output is amplified by the operational amplifier 2, processed by the analog/digital converter 3, and the resulting value is stored in the memory of the MPu 4. In FIG. 4, the signal is similarly amplified and converted into the frequency of the oscillator 5, and then converted into a digital amount using the counter function of the MPu 4 and stored in the memory. Both are analog amounts of sensor output.
Digital conversion was performed for processing with MPu4, and these are known techniques. In this way, the sensor output can be sent to MPu4 at the required timing.
, and performs the process of determining whether the rinse has been completed. FIG. 5 shows the internal processing from water supply to completion of rinsing.

First, set the initial value in memory. Next, after 2 to 3 minutes have passed during washing, when the detergent has sufficiently dissolved, a second measurement is taken to set the completion of rinsing.
Experience has shown that rinsing should be done at one-hundredth of the detergent concentration used for washing.

Completion of the rinse continues until the concentration measured during the final step matches the set value.

As described above, in the present invention, the initial water supply in the washing process is performed by energizing an auxiliary electromagnetic valve to supply water to the position of the electrode, measuring the conductivity of the supplied water, and measuring this measured value. Store it in the computer, then energize the electromagnetic valve to supply water to the specified water level for washing, measure the conductivity of the washing liquid containing the detergent liquid with the electrode, and compare it with the previously stored measurement value,
The present invention is characterized in that the completion of rinsing is determined based on this comparative determination value.

According to this configuration, the following actions and effects can be expected.

(b) The device is simplified because only one electrode is required to measure the conductivity of water.

(b) Since the completion of rinsing is determined based on the comparative judgment value of the conductivity measurement of the washing liquid before and after the washing liquid contains the detergent, correction based on water quality and water temperature is not required.

(c) The initial water supply is applied to an auxiliary electromagnetic valve and dropped into the gap between the outer tank and the inner tank from the supply water pipe, so the detergent stored in the inner tank is not dissolved.
For this reason, the electrical conductivity of the water supplied without detergent can be accurately measured, and rinsing is determined based on a comparative judgment value based on this, so that a good judgment of rinsing can be made.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing one embodiment of the present invention, and FIG.
The figure is a perspective view of essential parts showing one embodiment of the present invention, FIGS. 3 and 4 are block diagrams showing one embodiment of the present invention, and FIG. 5 is a flowchart showing one embodiment of the present invention. . 10... Inner tank, 30... Outer tank, 110... Solenoid valve, 120... Auxiliary solenoid valve, 130...
Supply water pipe, 140... Main water supply pipe, 150... Electrode, 160... Cap.

Claims (1)

[Claims] 1. Washing, rinsing, and spin-drying are performed as each washing process according to a set order according to instructions from a computer, and an outer tank and an inner tank are arranged in an outer frame,
It has an electromagnetic valve and an auxiliary electromagnetic valve, and the water supply pipe connected to the electromagnetic valve is arranged so as to face into the above-mentioned inner tank, and the supply water pipe connected to the auxiliary electromagnetic valve is arranged between the above-mentioned outer tank and the inner tank. The tank is arranged so as to face between the tanks, and an electrode for detecting the conductivity of the water is provided so as to protrude from the lower inner wall of the outer tank. energize to supply water to the position of the above electrode, measure the conductivity of the supplied water, store this measured value in the above calculator, then energize the solenoid valve to supply water up to the specified water level for washing. A washing machine characterized in that the electrical conductivity of the washing liquid containing the detergent liquid is measured by the electrode, and the conductivity is compared with the previously stored measurement value, and the completion of rinsing is determined based on this comparative judgment value. operating equipment.