KR0172878B1 - Control method of automatic washing machine - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a control method for a fully automatic washing machine with improved detergent and rinse performance of residual detergent and seam lint.

The method for controlling a fully automatic washing machine of the present invention includes a first step of setting a washing water level and watering the washing water, and then performing different washing steps for each course, a second step of watering at a higher water level than the set water level in the first step, A third step of repeating the rinsing cycle of the second step and varying the number of revolutions of the motor while performing a shower water supply for a predetermined time and performing a rinsing dewatering process to dehydrate the water when the constant motor rotation number is reached; And a fourth step of varying the water supply time by varying the number of times the water is supplied to vary the number of rotations of the motor in order to remove laundry damage by selecting an infant clothes course. For every laundry of people who are infant and skin soft, it is effective to remove residual detergent and lint by adding shower water every time Which will improve the soft washing and rinsing performance to prevent damage to the laundry.

Description

Fully Automatic Washing Machine Control Method

FIG. 1 is a longitudinal sectional view of a typical washing machine.

FIG. 2 is a block diagram of a conventional washing machine control configuration; FIG.

FIG. 3 is a conventional washing machine control flow chart. FIG.

FIG. 4 is a view for motor control in a dehydration stroke of a conventional washing machine standard course; FIG.

FIG. 5 is a block diagram of a washing machine control configuration according to the present invention; FIG.

FIG. 6 is a control flow chart of a washing machine according to the present invention; FIG.

FIG. 7 is a comparison chart of the washing machine standard course and the baby clothes course according to the present invention.

FIG. 8 is a view for motor control in a washing machine dewatering stroke according to the present invention; FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

51: Mycom part 52: Water level sensor part

53: buzzer driving section 54: key operating section

55: Motor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control of a fully automatic washing machine, and more particularly, to a method of controlling a fully automatic washing machine which improves rinsing performance and is effective in efficiently washing clothes and removing residual detergent and seam lint.

A general washing machine is supplied with water through a water supply valve provided at the upper part of the main body during washing as shown in a longitudinal sectional view of a general washing machine of FIG. 1, and then the motor mounted on the lower part of the outer tank in the main body rotates left and right, So that the rotor installed in the lower portion of the washing tub in the outer tub is rotated while rotating left and right.

In addition, when draining after washing, the drain valve provided on the drain hose at the lower side of the main body is opened so that the water in the outer tank is drained to the outside of the main body through the drain hose by the head of water. So that the washing machine and the rotor are rotated at a high speed at the same time, and the laundry is dewatered by the centrifugal force.

A conventional automatic washing machine will be described with reference to the accompanying drawings.

2 is a block diagram of a conventional washing machine control block, which includes a key input unit 21 for the user to select a desired washing cycle by pressing a key such as washing, rinsing, and dehydrating; A power supply unit 23 for converting the AC power of the microcomputer unit 22 to a voltage of a predetermined level to supply a constant current source to the microcomputer unit 22, A load unit 24 for controlling a motor, a water supply valve, and the like in accordance with an output signal of the microcomputer unit 22, a display unit 25 indicating progress of the washing machine, A reset section 27 for supplying a reset signal for initializing the microcomputer section 22 when the power is turned on and off and a reset section 27 for supplying a reset signal for initializing the microcomputer section 22 at a power supply frequency of 50/60 Hz A current source is provided to recognize the point at which the waveform crosses zero, Each consists of an interrupt signal to the microprocessor every 22 interrupt section 28, and a buzzer (29) receives the control signal of the microcomputer 22 for ringing signal unit during operation of the washing machine to provide for.

The operation of the conventional fully automatic washing machine constructed as described above is as follows.

3 is a conventional washing machine control flow chart. When a user applies power through the key input unit 21, the power supply unit 23 supplies power to the microcomputer unit 22 to issue a washing machine operation command to the load driving unit 24 .

If it is determined that the water level has been set by the user (31S), if the water level is not set, the process proceeds to the water level detection course to detect / set the water level corresponding to the water level (32S). If the user sets the water level in step 31, (34S), the water supply valve is turned on (34S), the water level is supplied to the set water level (35S), the water supply valve is turned off (36S) and the washing time is set (37S) time, and then the motor is turned on / off (38S) to perform the washing until the set washing time (39S).

In the conventional automatic washing machine constructed as described above, there is a problem that the detergent remains in the laundry even after the entire stroke is completed, the lint is left, and the user has to add the rinse again for the complete rinse.

It is an object of the present invention to provide a control method of a fully automatic washing machine capable of preventing a rinse performance improvement and a laundry damage of a baby clothes from being damaged.

In order to achieve the above object, a method of controlling a fully automatic washing machine according to the present invention includes a first step of setting a wash water level and watering and then performing different washing steps for each course, A third step of repeating the rinsing cycle of the second stage to perform shower water supply for a certain period of time while varying the number of motor rpm and proceeding to a rinse dewatering cycle of dewatering at a constant motor rpm, And a fourth step of varying the number of revolutions of the motor and varying the shower water supply time to perform the dehydration step.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method of controlling a fully automatic washing machine of the present invention will be described with reference to the accompanying drawings.

FIG. 5 is a block diagram of a washing machine control block according to the present invention. FIG. 5 is a block diagram of a washing machine control block according to the present invention. The washing machine control unit 51 includes a microcomputer 51 for controlling the entire system, a water level sensor 52 attached to the washing tub for sensing a water level, A buzzer drive section 53 for driving the motor 55 and a buzzer drive section 53 for driving the motor 55 in response to a user's operation; A water supply valve unit 58 for supplying water into the washing tub up to the water level set by the signal of the microcomputer unit 51 and a water supply valve unit 58 for supplying water to the water supply valve unit 58 And a water supply valve driving unit 59 for driving the water supply valve.

FIG. 6 is a control flow chart of a washing machine according to the present invention. In the present invention configured as described above, when a user applies power through a key operation unit 54, the washing machine operation command is issued by the microcomputer unit 51.

If it is determined that the water level is set by the user (600S), if the water level is not set, the process proceeds to the water level detection course to detect / set the water level corresponding to the water level 610S. If the user sets the water level, The reversal period and the water level are set.

When the water level is set, the water supply valve is turned on (602S), the water level is supplied to the set water level (603S), the water supply valve is turned off, the time is initialized, the motor 55 is turned on / off, (605S) (606S).

Referring to the comparison chart of the washing machine standard course and the infant course according to the present invention in FIG. 7, the wash rate RPM (Rotation Per Minute) from the speed detector 57 is washed at 1750RPM for 14 minutes In the case of the baby clothes course, the laundry is washed for 14 minutes at 1400 RPM for 9 minutes and at 1200 RPM for 9 minutes for 18 minutes to vary the number of revolutions of the motor 55 in order to remove laundry damage.

The water supply valve 58 is turned on for the rinsing step 607S in the washing cycle and the water supply valve 58 is opened by the microcomputer 51 when water is supplied until the water level becomes higher than the set washing water level (609S) (610S), the rinsing cycle is advanced until the rush setting time (611S) (612S), the first rinsing cycle (613S), the first rinse dehydration (614S), the rinse cycle (615S), the drain valve (615S), the drain valve (615S), the drain valve (616S), the shower valve When it is 30 seconds (619S), the shower valve is turned off (620S).

If the number of revolutions of the dehydration motor in the ON state is over 400 RPM (621S) and 1000 RPM is detected (622S), the shower valve is again turned on for one minute (623S) (624S).

After the shower water is supplied in step 624, the valve is turned off and the valve is turned off (625S). After the dehydration for 1200 hours from 1200 RPM, 1400RPM to 1700RPM or normal RPM (about 1750RPM), 620S (627S)

The second rinse dehydration process (630S) (632S) for 20 seconds to turn on the sub-routine ① to turn on the shower valve when the dewatering motor is turned on after the drain valve is turned on until the next water level becomes equal to the water level (607S, 608S, ..., 613S) 633S) Turn off the shower valve (634S) and turn the shower valve on when the dehydration motor RPM reaches 1000 RPM. Turn on the subroutine ② (635S) for 40 seconds (636S) and turn off the shower valve. The dehydration motor RPM reaches 1700RPM After the dewatering subroutine (3) is completed (637S), the rinse is completed (638S) .

After the completion of the rinsing cycle, the subroutine 1 640S is turned on for 10 seconds (641S), the shower valve is turned off (642S), the subroutine 2 643S is turned on for 30 seconds (644S ) ≪ / RTI > subroutine < RTI ID = 0.0 > 3 (645S) < / RTI >

The above- The RPM of the washing machine can be represented as a diagram for controlling the motor in the washing machine dewatering stroke according to the present invention shown in FIG.

When the dehydration RPM reaches 400 RPM, that is, in the section I, the shower valve is turned on for 10 seconds, and when the engine reaches 400 RPM, the motor is turned off for 2 seconds.

When the temperature rises from 400 RPM to 1000 RPM, the dehydration motor on / off time is controlled to 5 seconds / 4 seconds to reduce the water scattering which may occur with the shower water in the section II, and when 1000 RPM is reached, Off for a second.

On the other hand, the conventional dehydration stroke RPM can be represented as a diagram for motor control in the dehydration stroke of the conventional washing machine standard course of FIG.

As described in the present invention, the number of times of rinsing is basically set to three times. By adding a shower water to each rinse, a definite effect is obtained in removing residual detergent and lint. In particular, It is possible to prevent the damage of the laundry and improve the rinsing performance.

Claims (1)

The method of claim 1, further comprising the steps of: preparing an infant clothes course in the washing course of the washing machine; dividing the washing time into at least two pieces when the infant clothes course is selected; A washing step of lowering the motor speed of each section according to the washing speed; An intermittent dewatering section in which the motor rotation speed is gradually increased for dehydration after rinsing at a water level higher than the washing water level is subdivided into a rapid acceleration section and a constant speed maintenance section and a washing water is sprayed during the rotation of the washing machine in the constant speed maintenance section And a rinsing and dewatering step of rinsing the shower to drain the water and stopping the rinsing of the shower in order to prevent water from being drained and rotating together with the washing tub during the rapid acceleration period.