KR940003812B1 - Washing method of washer according to quantity-quality of clothes - Google Patents

Abstract

The method is for detecting the quantity of laundry and determining the material of it with the detected data. A motor is driven after water is filled up to a certain level by command of a microprocessor. The number of pulses according to variation of the motor current is counted. The predetermined water level is calculated with the first counted number and the water is supplied up to the predetermined level. After running for a certain time, the pulse is measured again. The first and second pulse numbers are compared to determine the final water level. The final water level, washing time, and the water flow are determined with the compared value.

Description

Washing Method of Fully Automatic Washing Machine According to Quantity

1 is a circuit diagram of a conventional automatic washing machine of the present invention.

2 is a signal flow diagram for a washing method of a conventional fully automatic washing machine.

Figure 3 is a signal flow diagram for the washing method of the automatic washing machine according to the present invention.

* Explanation of symbols for main parts of the drawings

1: photo coupler 2: NAND gate

3, 4: triac 5: washing motor

6: diode 7: resistor

8: Micom

The present invention relates to a method for washing a fully automatic washing machine using a quantity-foam, and particularly, a washing of a fully-automatic washing machine according to a quantity-foam, which accurately detects a quantity of laundry having a high buoyancy such as nylon and calculates the quality as the detection data. It is about a method.

In the conventional washing method of the fully automatic washing machine, as shown in FIGS. 1 and 2, water is supplied by a minimum water level (about 200rnm) after the laundry is put in the washing tank, and the high electric potential is supplied through the terminal P1 of the microcomputer 8. When the output, the triac (3) is conducted so that the washing motor (5) is inverted right.

At this time, the washing motor 5 continues to rotate to some extent by the rotational centrifugal force at the time of driving, but when there is a lot of laundry in the washing tank, the motor rotational force rapidly decreases.

Accordingly, the waveform input to the terminal P3 of the microcomputer 8 through the photocoupler 1 and the signal amplification NAND gate 2 is applied as a pulse according to the rotation of the washing motor 5, and the terminal P1. ) Output is changed from the high potential to the low potential to cut off the power supply to the washing motor (5) to detect the amount of laundry in the washing tank, that is, the quantity of the laundry by the number of pulses generated in the quantity detection circuit as described above.

Therefore, when the laundry is small, the number of pulses is large, and when the laundry is large, the number of pulses is small.

In this way, the conventional capacity detection method is to supply the water level to the minimum water level at the beginning of the washing process, so that the washing motor 5 is cycled from 0.6 seconds (left) to 0.6 seconds pulse detection → 0.6 seconds (right) → 0.6 seconds pulse detection. The washing motor 5 is inverted 24 times, and the amount of the laundry is sensed by summing the number of detected pulses.

Using these data as data, the smaller the number of pulses, the higher the washing level is.

However, in the conventional quantity detection method as described above, if the fiber is bulky as compared to the weight, such as nylon, the amount of water is detected in a state in which laundry is floated on the water so that water is not absorbed within a short time so that water is not absorbed within a short time. And there is a problem that the wear level of the laundry and the proper washing is not made as the water level is set to a low level and the washing proceeds under the water level during washing.

An object of the present invention is to solve the conventional problems as described above, washing the first time after the first dose detection, and performs the second dose detection again to determine the correct amount and quality, and to improve the accuracy of the washing condition determination The present invention provides a method of washing a fully automatic washing machine according to a quantity-foam to prevent abrasion of laundry due to under-leveling that may occur in case of light laundry floating in water.

The present invention for performing the above object is to detect the primary amount by the number of pulses applied to the microcomputer, after a certain time washing the secondary amount by the number of pulses applied to the microcomputer, the primary amount of detection pulse The optimum water level is determined by judging the quality of cotton, nylon, etc. based on the difference between the number of water and the second quantity of detection pulses, and after washing the second amount of water, the water is resupplied to the optimum level to wash. It demonstrates in detail by drawing.

1 is a circuit diagram of a fully automatic washing machine to which the washing method of the present invention is applied. As shown in FIG. 1, the washing motor 5 and the left inversion are driven through the triac 4, and the washing motor 3 is driven through the triac 3. 5) and the rotation of the washing motor (5) is sensed through the voltage drop resistor (7), rectifier diode (6), photocoupler (1), signal amplification NAND gate (2). By applying a pulse to the terminal P3 of the microcomputer 8, the operation and effect will be described with reference to FIG.

First, when a user puts laundry into a washing tank and starts washing, the microcomputer 8 supplies water to the minimum level and when the water level reaches the minimum level, the washing motor 5 is driven 24 times to calculate and store the number of pulses first. .

After calculating the tentative water level in this way, if the tentative water level is judged to be low, medium, or high water level, the first water supply is performed up to the tentative water level. At this time, when the water reaches a definite water level, the microcomputer 8 performs washing for a predetermined time (30 seconds to 1 minute).

Here, even if the laundry floats on the water during the washing time, the water is absorbed and submerged in the water. After the first washing, the amount of water is sensed again and the second pulse number is calculated and stored.

If the type of laundry is cotton, water is absorbed sufficiently during the first water supply, so there is almost no load fluctuation, so there is little variation in the number of first and second quantity detection pulses. In this case, the water is floated on the water during the first water supply, and the water absorbs and sinks during the second water supply, so that a large difference occurs in the load, and the variation in the number of first and second dose detection pulses also increases.

In the case of laundry mixed with cotton and nylon, there is a difference depending on the mixing ratio, but the variation in the number of pulses is smaller than that of nylon alone.

Therefore, the quality of the laundry can be detected by comparing the number of pulses in the first detection and the number of pulses in the second detection, and the laundry is submerged after the first washing even if the laundry floated on the water during the first detection. Accurate dose detection is also possible.

As described above, if there is almost no change in the number of first and second dose detection pulses, the first fixed water level is determined as the final water level, and the quality is determined by the surface type.If the difference between the first and second dose detection pulses is small, the water level is reset. In addition to resupply, the quality of cotton is determined by cotton and nylon, and if the difference between the number of primary and secondary dose detection pulses is large, the level of water is reset and the quality is determined by nylon type. Then, if the determined cloth is cotton, the washing time is long and the water flow is set strongly. If the cloth is not cotton, the washing time is short and the water flow is weakly set. Then, the washing is performed for the set washing time. After rinsing, dehydration is performed.

As described in detail above, the present invention resets the appropriate water level according to the correct dose obtained by the primary and secondary dose detection, re-waters the water if necessary, and compares the quality of the primary and secondary dose detection pulses by the comparative judgment. Accordingly, the washing process is performed by setting the proper washing time and water flow, thereby eliminating the wear phenomenon of the laundry due to the low water level, thereby obtaining the optimum washing effect.

Claims (1)

At the start of washing, the microcomputer supplies water to a certain level, drives the washing motor, and counts and stores the number of pulses according to the current change of the washing motor, and calculates the tentative level according to the first count value. Performing a first washing for a predetermined time by supplying water to a predetermined water level, then driving the washing motor again and counting the number of pulses according to the current change of the washing motor secondly; The final method of determining the final water level by comparing the second count value and washing according to the result of the water level reset, washing time and water flow according to the result of the washing step.