KR0163322B1 - A natural drain preventing method of a washing machine - Google Patents

Abstract

The present invention relates to a method for preventing natural drainage of a washing machine in which a washing machine drained by a drainage pump prevents a natural drainage of the drainage pump during water supply. The present invention relates to whether a water supply level during water supply reaches a specified level. If the detected water level reaches the designated level, it performs a series of washing strokes. If the water level does not reach the water level, it determines whether there is a change in the water supply level. Characterized in that it is made to be.

Description

Natural drainage prevention method of washing machine

1 is a schematic longitudinal sectional view of a washing machine used in the present invention.

2 is a schematic control block diagram of a washing machine used in the present invention.

Figure 3 is a flow chart for the natural drainage prevention method in the present invention.

* Explanation of symbols for main parts of the drawings

A: Operation signal input part B: Micom

C) Water supply drive part D: Water level detection part

E: Motor drive bar: Drain pump drive

4: Drain valve driver

The present invention relates to a method for preventing natural drainage of a washing machine, and more particularly, to a method for preventing natural drainage of a washing machine to prevent a natural drainage phenomenon with a drainage pump during water supply.

In the case of a washing machine forcing drainage using a conventional drainage pump, the drainage hose for draining contaminated washing water is provided with a drainage hose for draining contaminated washing water without a separate drain valve and driving a drainage pump during drainage. It is installed higher and forced to drain contaminated wash water after washing.

However, when the user installs the drain hose at a position lower than the designated water level position of the washing machine to drain the water, there is no problem during drainage. In this regard, the washing water being supplied is not only prevented from washing due to a natural drainage phenomenon through the drainage pump, but also causes a waste of water.

Therefore, an object of the present invention is a washing machine forcibly draining by using a drain pump, by installing a drain valve on the drain port to close the drain valve if there is no change in the water supply level during water supply to prevent the natural water drainage during water supply I want to.

In order to realize the above object, the present invention detects whether the water level at the time of water supply reaches a designated level, performs a series of washing strokes when the detected level reaches the designated level, and does not reach the designated level. If it is determined that there is no change in the water supply level, the water supply is made by closing the drain valve.

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

FIG. 1 is a schematic control block diagram of a washing machine applied to the present invention, and includes a water storage tank 2 storing laundry water supplied inside the outer case 1 and washing the laundry inside the water storage tank 2. A washing tank 3, a pulsator 4 that rotates the washing machine forward and backward in the lower center of the washing tank 3, and a motor that is mounted to the lower portion of the water storage tank 2 to generate rotational force in the pulsator 4 Part 5, a drain 6 for draining the contaminated wash water provided on one side of the bottom of the reservoir 2, and is mounted on the lower end of the drain port 6 to force the contaminated wash water while pumping during drainage It is provided with the drain pump 7 which drains, and the drain valve 8 which turns on / off at the time of water supply drainage between the said drain port 6 and the bath pump 7.

2 is a schematic control block diagram of a washing machine applied to the present invention, the driving signal input unit (a) for inputting the washing operation signal for a series of washing administration and the operation signal input from the driving signal input unit (a) A microcomputer (b) controlling each drive unit by controlling a predetermined program and outputting a controlled signal; a water supply driver (c) receiving water from the microcomputer (b) and supplying a washing water to the washing tank; The water level detection unit (D) for detecting the water level of the wash water and the water discharged from the water supply driving unit (C), and when the water level detected by the water level detection unit (D) reaches the set level, the microcomputer (B) When the washing or rinsing or the rinsing is completed according to the control signal of the motor driving unit (e) and the motor driving unit (e) when washing and rinsing is completed by the control signal of the microcomputer (b) It consists of a drain pump drive part (bar) which drains while ping-driving, and a drain valve drive part (g) which drives a drain valve on / off by a control signal of the said microcomputer (b).

3 is a flow chart for the natural drainage prevention method of the present invention, it is determined whether the water supply step 30 for supplying water for washing in the initialization state, and whether the water supply level in the water supply step 30 has been completed to the set water level. When the water level completion step 31 and the water level determined in the water level completion step 31 has reached the specified level, the laundry progress step 32 for proceeding with the washing, and the laundry progress step 32 If the washing operation is not completed in the washing operation determination step 33 and the washing operation completion determination step 33 to determine whether the washing operation is completed, proceed with the washing operation until the washing operation is completed, washing operation After this is completed, if the water supply level of the drainage step 34 for draining the wash water and the water level to be determined in the water level completion determination step 31 does not reach the designated level, there is a change in the water supply level. If there is a change in the water level change determination step 35 to determine a value and the water level determined in the water level change determination step 35, the water is continuously supplied until the designated water level is reached, and if there is no change in the water level, In order to prevent the drainage is to be made to the drain valve off step 36 to turn off the drain valve.

Referring to the effects of the present invention made as described above are as follows.

Applying power to the washing machine, and then put the laundry in the washing machine for washing, and when the driving signal for a series of washing administration through the driving signal input unit of the washing machine inputs the input of the washing machine at the microcomputer (b) The washing operation is controlled by a predetermined program for a series of washing operation signals and outputs a controlled signal to perform washing operation. That is, in the microcomputer (b), the water supply step 30 is first performed by a predetermined program. Go to control the water supply driving unit (c) to supply water by the operating signal input to the washing tank (3) and to control the water level detection unit (d) to supply water while sensing the water level.

Subsequently, the microcomputer (b) goes to the water level completion determination step 31 and detects whether the water level to which the water level has been completed is a specified level, and detects it through the water level detection unit (d). B) In the washing progress step 32, the motor driving part (e) is controlled to perform washing while rotating the pulsator forward and reverse.

While proceeding with the washing as described above, the microcomputer (b) goes to the washing completion determination step 33 to determine whether the washing operation in progress is completed. At this time, if the washing is not completed, the washing operation is continued. When the washing operation is completed as a result of the determination, the microcomputer (b) goes to the drainage step 34 to drain the washed laundry water and controls the drain pump 7 of the drain pump driver (bar) and drains the water. The drainage valve 8 of the valve drive unit 4 is turned on to force the washing water to drain.

On the other hand, as a result of determining the water supply level in the water level completion determination step 31, if the water supply level does not reach the designated water level, the microcomputer (b) goes to the water level change determination step 35 and changes in the water supply level If it is determined that there is a water level change, the microcomputer (b) judges that natural drainage is not made at present, and proceeds to supply water until the designated water level is reached. In the microcomputer (b), it is determined that there is no change in the water supply level at present, and the water drainage valve is turned off (36) to control the drain valve driving unit (4) to turn off the drain valve (8) to drain the natural drainage. The water is supplied until it reaches the specified level without making it happen.

As described above, the present invention provides a washing machine forcibly draining the wash water after the completion of washing, by installing a drain valve at the front of the drain pump, and closing the drain valve during water supply, where the water is lower than the designated water level. When it is located to prevent the natural drainage, it is to provide an effect that can prevent in advance that the washing or the waste of water caused by the natural drainage phenomenon.

Claims (1)

Detects whether the water level reaches the designated level during water supply, performs a series of washing strokes if the detected level reaches the specified level, and determines whether there is a change in the water level if the level is not reached. If there is no change in the water level is a natural drainage prevention method of the washing machine characterized in that the water supply is made by closing the drain valve.