KR20000043401A - Method for controling unevenness of laundry - Google Patents

Abstract

PURPOSE: A method for controling unevenness of the laundry is provided which can do the hydroextract stably by maintaining even state of the laundry in a short time through supplying water and discharging water. CONSTITUTION: A method for controling unevenness of the laundry is comprised of: a stage to decide whether the laundry is placed unevenly; a stage to finish washing the laundry after hydroextracting, rinsing and hydroextracting if the laundry is placed evenly and to carry out supplying water again and make the pulsator operate intermittently if the laundry is placed unevenly; a stage to discharge water and make the pulsator operate if the water level by the same stage is reached to the designated level; and a stage to carry out weak hydroextract if the same discharging water is finished.

Description

Laundry Unbalance Control

According to the present invention, when the center of gravity of the washing tank is displaced to one side according to the imbalance on the arrangement of the laundry during the dehydration operation after the completion of the washing administration, the water supply and drainage are performed during the water supply and drainage period to perform the water supply and drainage to make the equilibrium state. The present invention relates to a laundry inequality control method in which a pulsator is intermittently operated at a predetermined time interval to generate a corrected water flow for an unbalance of a cloth.

After the laundry is put into the washing machine and the washing operation conditions are determined by using the function selection buttons of the operation selection unit provided on the front panel of the washing machine, and the start button is pressed, the washing control microcomputer detects the sensing value of the load sensor sensing the weight of the laundry in the washing tank. We accept and decide quantity of washing water supply.

This water supply finds the water level in the memory table and completes the water supply to the water level before washing.

After the washing process is completed, a series of washing processes are completed by draining, rinsing and dehydrating.

1 is a circuit diagram of a general automatic washing machine control system for executing the above washing process.

As referred to herein, the microcomputer 10 that controls the entire washing machine includes key input data of the operation selection unit 12 for inputting the function selection and setting conditions of the washing control program, and the water level for each quantity of water supplied to the washing tank. Sensing data of the water level sensor 11 for sensing the load, sensing data of the load sensor 13 for sensing the weight of the laundry in order to determine the washing amount as a weight value, and a safety switch for picking up excessive vibration of the washing tank during dehydration The contact signals of 14 are connected to each other.

The microcomputer 10 has a memory 25 that stores information related to system programs, reservations, and the like, and a timer 26 for present time information and timing counts.

The water supply control signal output from the microcomputer 10 causes the water supply valve 17 to operate through the water supply valve driving unit 15 to supply water to the water storage tank having the washing tank, and is generated after the completion of the washing stroke or the rinsing stroke. By the drain control signal from the microcomputer 10, the drain valve 19 is operated through the drain valve driving unit 18 so that the wash water stored in the reservoir is discharged.

In addition, the motor control signal output from the microcomputer is connected to be applied to the motor 21 through the motor driving unit 20, the power generated by the motor 21 is the washing tank 23 and the pulsing through the gear mechanism 22 It is configured to be connected to the data 24 to be applied.

The washing control process by the conventional washing machine control circuit is shown in the flowchart of FIG.

Looking specifically at the operation process, when the washing machine user puts the laundry in the washing tank and selects the washing mode and the dehydration time using the operation selection unit 12 and then press the start button, the weight of the laundry by the load sensor 13 It is detected and provided to the microcomputer 10.

The method of detecting the load of the laundry is to temporarily drive the motor when the washing operation start switch is turned on so that the pulsator connected thereto is rotated, and the rotation of the pulsator is resisted by the laundry to change the magnitude of the driving current of the motor. The amount of washing in the washing tank is measured by detecting and obtaining the ratio value in proportion to the reference value of the no-load state.

Accordingly, the microcomputer determines the water level sensor for detecting the water supply amount corresponding to the laundry weight value detected and input from the table on the data memory 25 to detect when the water supply to the corresponding amount is completed.

After the water level sensor is determined and the detergent corresponding to the water supply amount is input, the microcomputer 10 drives the motor 21 through the motor driving unit 20 to execute the washing operation.

After the washing stroke is completed, the microcomputer 10 drains all the contaminated water in the washing tank by the operation control of the drain valve 19 through the drain valve driving unit 18 and switches to the dehydrating stroke mode.

The dehydration stroke is performed by rotating the motor 21 at high speed through the motor driving unit 20 while the microcomputer 10 connects the motor 21 and the washing tank 23 through the gear mechanism 22.

During this dehydration operation, the microcomputer 10 monitors whether vibrations are detected according to the imbalanced arrangement of the laundry in the washing tank by the safety switch 14.

In this case, if the vibration sensing contact of the safety switch does not occur, it is determined whether dehydration is completed. If dehydration is completed, the next washing process is performed and finished. However, when the safety switch is operated, the microcomputer performs a balancing rinsing step consisting of re-water supply and drainage through the operation of the water supply valve.

That is, as shown in FIG. 2, if the bubble is in an equilibrium state by determining whether the bubble is in equilibrium, the first and second rinses are performed immediately after the completion of the dehydration, and if the bubble is unbalanced, water dehydration is performed. After performing additional rinsing for balancing, the dehydration and the first and second rinsing process are finally performed.

However, the addition of the balancing rinsing step in the conventional bag unbalance as described above has the disadvantage that the entire washing time is extended since the rinsing time takes more than a few minutes except at least the water supply time and the draining time.

The object of the present invention is to carry out the re-water supply and drainage to the determined water level when the vibration detection safety switch is operated by the center of gravity of the washing tank is pulled to one side due to the entanglement of the cloth during dehydration operation after completion of the washing administration By operating the pulsator at a fixed time during its drainage and watering time to balance the guns, the guns can be balanced so that the guns can be equilibrated without a separate rinse time. Compared to provide a laundry unbalance control method that can be significantly shortened.

1 is a block diagram of a general washing machine control circuit.

2 is a flowchart illustrating an operation process for releasing a laundry unbalance state during the dehydration of the related art.

3 is a flowchart illustrating an operation process for releasing laundry unbalanced state during dehydration according to the present invention.

※ Explanation of symbols about main part of drawing ※

10: microcomputer 11: water level sensor

13 load sensor 14 safety switch

15: water supply valve drive unit 17: water supply valve

18: drain valve drive unit 19: drain valve

20: motor drive unit 21: motor

22: gear mechanism 23: washing tank

24: Pulsator 25: Memory

26: timer

The present invention for achieving the above object is the step of determining whether the cloth unbalance through the contact signal of the safety switch for vibration detection during drug dehydration after the completion of washing, and if the arrangement of the fabric at the equilibrium in the step, subsequent rinsing process after the completion of dehydration When the washing is finished by performing this dehydration process, if the arrangement of the fabric is unbalanced, re-watering is executed and the pulsator is intermittently operated, and when the water level of the water supply reaches the set level, the pulsing operation is performed at the same time. And intermittently operating the data, and re-performing the plundering operation when drainage is completed in the step.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 is a flowchart illustrating a process of releasing an unbalance of a cloth according to the present invention. This flow is performed in the washing machine control circuit of FIG.

As referred to herein, when the washing machine user puts the laundry in the washing tank, selects the washing mode and the dehydration time using the operation selector 12, and then presses the start button, the weight of the laundry is detected by the load sensor 13. And provided to the microcomputer 10.

The microcomputer finds the water supply amount corresponding to the laundry weight value detected and input from the table on the data memory 25 and determines a water level sensor for detecting when water supply up to the corresponding amount is completed.

After the water level sensor is determined and the detergent corresponding to the water supply amount is input, the microcomputer 10 executes the washing stroke by driving the motor 21 through the motor driving unit 20.

After the washing stroke is completed, the microcomputer 10 drains all the contaminated water in the washing tank by the operation control of the drain valve 19 through the drain valve driving unit 18 and switches to the dehydrating stroke mode.

The dehydration stroke is performed by rotating the motor 21 at high speed through the motor driving unit 20 while the microcomputer 10 connects the motor 21 and the washing tank 23 through the gear mechanism 22.

This dehydration is performed in a weak dehydration mode in the rinsing step. During the weak dehydration operation, the microcomputer 10 monitors whether vibrations are detected according to the unbalanced arrangement of the cloth in the washing tank by the safety switch 14.

Here, if the contact of the safety switch 14 is not generated, that is, in the state that the vibration does not deviate from the allowable range to determine whether the dehydration is completed, if the dehydration is completed, the next washing process is performed and ends. However, when there is an operation of the safety switch due to excessive vibration of the washing tank, the microcomputer determines that the gun is unbalanced and performs balancing to solve the unbalanced state.

Balancing is performed by re-water supply through the operation of the water supply valve. At this time, the pulsator is intermittently operated at the same time as water supply and water is supplied to the set water level.

In the experiment, the intermittent pulsator's time interval was very effective in resolving the unbalance of the gun when it was defined as 0.3 sec on / 0.3 sec off.

On the other hand, when the water supply reaches the set level during the balancing operation to solve the unbalance of the gun, the microcomputer immediately performs the drainage mode and drains. Even during this drainage operation, the pulsator is still intermittently controlled at regular time intervals.

Intermittent driving of the pulsator is performed until the drainage is completed in the balancing process. When the drainage is completed, the pulsator returns to the initial plunger operation step and re-executes the process of determining whether the plunder and the gun are unbalanced again.

The process of releasing the laundry mess is summarized as follows.

In the first step, it is determined whether the cloth is unbalanced through the presence or absence of the contact signal of the safety switch for vibration detection during the dehydration after washing.

In the second step, if the bag is in the equilibrium state as a result of the determination of the first step, after the dehydration is completed, the subsequent rinsing process and the main dehydration process are performed. If the bag is unbalanced, the pulsator is intermittently executed at a certain time interval at the same time. Operate.

In the third step, when the water level reaches the set level as the water supply operation performed simultaneously with the intermittent operation of the pulsator in the previous step, the drainage operation is performed immediately without interruption of the intermittent operation of the pulsator.

In the fourth step, when the drainage operation of the third step is completed, the weak dehydration operation of the first step is performed again to determine whether the gun is unbalanced again.

As described above, the present invention can shorten the unbalance resolution time of the cloth through resupply and drainage due to the unbalanced arrangement of the cloth in the dehydration operation mode during the washing operation using the washing machine, thereby reducing the washing time as a whole. Unique effects are obtained.

Claims (1)

In the dehydration operation control method of the washing machine, the first step of determining whether the cloth is unbalanced through the contact signal of the safety switch for vibration detection during weak dehydration after the completion of washing, and if the cloth is in equilibrium state after the dehydration is completed The second step of intermittent operation of the pulsator at regular time intervals when the washing is finished and the bag is unbalanced by performing the subsequent rinsing process and this dehydration process, and the water level by the water supply operation of the second step is A third step of immediately performing a drainage operation without interruption of the pulsator's intermittent operation when the set water level is reached; and a fourth step of re-running the weak dehydration operation of the first step when the drainage operation of the third step is completed. Laundry unbalance control method characterized in that.