KR19990026393A - How to detect drainage errors in the washing machine - Google Patents

Abstract

According to the present invention, when the drainage is not made when the drainage is completed after the completion of washing, after opening and closing the drain valve by a predetermined number of times, the drainage synchronous motor is arbitrarily set. Regarding the detection method,

The present invention is a drainage step 30 to open and drain the drain valve when draining after the completion of washing, the first drainage water level determination step 31 to determine whether the drainage level change in the drainage step 30, and the first If the drainage level is changed in the drainage level determination step 31, the drainage completion determination step 32 of draining and completing the drainage is completed while judging whether the drainage is completed, and the change in the drainage level in the first drainage water level determination step 31 is changed. If not, the drainage synchronous motor operation step 33 for operating the drainage synchronous motor 4-5 times, and the second drainage for determining whether there is a change in the drainage level while the drainage synchronous motor is operated in the drainage synchronous motor operation step 33. If there is a change in the drainage level in the water level determination step 34 and the second drainage water level determination step 34, the water is drained until the drainage is completed, and if there is no change in the drainage water level, a drainage error displaying step of displaying a drainage error. Made of 35 It is characterized by supporting.

Description

How to detect drainage errors in the washing machine

The present invention relates to a method for detecting a drainage error of a washing machine, and in particular, when drainage is not made after drainage, after opening and closing the drain valve by a predetermined number of times, the drainage synchronous motor is arbitrarily set. And a drainage error detection method of the washing machine to alert the drainage error.

In general, when the washing is completed and the drain is operated by draining the synchronous motor when the drain is drained by opening the drain valve, when the drain is completed, the drain valve is to be closed.

In this way, when the laundry is drained, the detergent injected to improve the washing power during washing separates the foreign matter and pollutants from the laundry, and the separated foreign matter and pollutants are discharged together with the drained wash water.

Therefore, since the foreign matter and contaminants are not completely discharged to the drain port when the drainage is completed after washing, the foreign matter and contaminants are accumulated in the drain valve so that the foreign matter and contaminants accumulate. As it accumulates more and more, it temporarily blocks the drain valve at any moment, and the drain valve does not operate even though the drain synchronous motor is operated.

Nevertheless, conventionally, the drain synchronous motor is operated once when draining after the completion of washing, so when the foreign matter and contaminants temporarily block the drain valve, the drain valve is easily operated by operating one drain synchronous motor. If the operation does not occur and eventually drainage is not made and the washing machine stops all the operation has a problem that indicates that the drainage error.

The object of the present invention is to determine whether there is a change in the drainage level when draining after washing, if there is no change in the drainage level, the drainage synchronous motor is operated by a predetermined number of times set at random to open the drainage valve, but the drainage changes at this time. If not, by detecting and displaying a drainage error, it is intended to prevent the occurrence of drainage errors due to clogging of the drain valve temporarily due to foreign substances and contaminants generated during washing.

In order to realize the above object, the present invention includes the steps of opening and draining the drainage valve during drainage after the completion of washing, determining whether there is a change in the drainage level in the step, and if the drainage level is changed in the step, the drainage is If it is determined that the drainage is completed, proceed to the next administration, if the drainage is not completed, continue the drainage, and if there is no change in the drainage level in the above step to operate the drain synchronous motor 4-5 times, In the above step, it is determined whether there is a change in the drainage level while the drainage synchronous motor is operated, and if there is a change in the drainage level, the drainage is completed until the drainage is completed, and if there is no change in the drainage level, a drainage error is displayed. It features.

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 drain error detection method of the present invention washing machine

* Explanation of symbols for main parts of the drawings

end; Operation signal input unit b; Micom

All; Drainage and driving part d; Water level detector

hemp; Motor drive bar; Error display part

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

1 is a schematic longitudinal sectional view of a washing machine used in the present invention, a water storage tank (1) for storing the wash water supplied during washing, and a washing tank (2) for washing, rinsing, and dehydrating laundry inside the water storage tank (1). ), A pulsator (3) for forming a washing water flow while rotating forward and reverse in the center of the bottom of the washing tank (2), and a gear for reducing the rotational force of the pulsator (3) in the lower portion of the water storage tank (1). The water level detector for detecting the water level of the water supply and drainage to the part 4, the motor 5 for supplying rotational force to the gear unit 4, and the washing tank 2 on one side of the water storage tank ( 6) and the drain valve 7 for draining the contaminated wash water on one side of the bottom of the reservoir 1.

2 is a schematic control block diagram of a washing machine in which the present invention is used, the driving signal input unit (A) for inputting a driving signal for a washing, rinsing, and dehydrating operation, which is a series of washing operations, and the driving signal input unit (A). In the microcomputer (b) and the microcomputer (b) controlling the driving unit by controlling operation signals for a series of washing operations input by the predetermined program, and outputting the controlled signal to each drive unit. A water supply and drainage drive unit (C) for supplying water to the washing tank and the water storage tank while controlling the drain valve while draining the water supply valve while the water supply valve is driven by the output control signal (C) and the water supply and drainage driving unit ( C) Water level detection unit (D) for detecting the water level of the wash water drained and drained from the water and washing and rinsing by rotating the motor forward, reverse and high speed according to the control signal of the microcomputer It consists of a motor driving part (e) for gum and dehydration driving, and a drain synchronous motor driving part (bar) for opening and closing the drain valve by the control signal of the microcomputer (b).

3 is a flowchart illustrating a drainage error display method of a washing machine according to the present invention, in which a drainage step 30 of opening and draining a drain valve when draining after washing is completed, and determining whether there is a change in the drainage level in the drainage step 30. If the drainage level is changed in the first drainage water level determination step 31 and the first drainage water level determination step 31 is determined, the drainage is completed. If not, the drainage completion determination step 32 to continue the drainage, and if there is no change in the drainage level in the first drainage water level determination step 31, the drainage synchronous motor operating step of operating the drainage synchronous motor 4-5 times ( 33), and a second drainage water level determination step 34 for determining whether there is a change in the drainage water level while the drainage synchronous motor is operated in the drainage synchronous motor operation step 33, and the second drainage water level determination step 34 Drain from If no change is above the drainage until drainage is complete, the change in the drainage water level is one to be made a multiple error display step (35) for displaying a multiple error.

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

First, power is supplied to the washing machine to wash the laundry, and then, while the laundry to be washed is put in the washing machine, the operation signal for the washing, rinsing, and dehydrating administration, which is a series of washing administrations, is input through the operation signal input unit. B) If the input is input to the microcomputer (b), the water supply and drainage drive unit (C) is controlled by a predetermined program with respect to the input laundry administration signal to start water supply to the washing tank (2). The water level is sensed through the water level sensor 6 of the water level sensing unit (D) and supplied and completed. Then, the motor 5 is rotated forward and backward through the motor driving unit (E). The rotational force of) is decelerated through the gear unit 4 to proceed with washing by the pulsator 3, and then when the washing is completed, the microcomputer (b) drains the contaminated washing water in order to drain the contaminated washing water. ) Go to control the drain synchronous motor drive (bar) to operate the drain synchronous motor to open the drain valve (7) of the water supply and drain drive (C) to drain.

In the state of draining in this way, the microcomputer (b) goes to the first drainage water level determination step 31 to control the water level sensing unit d to determine whether there is a change in the water level drained through the water level sensor 6, At this time, if a change occurs in the drainage water level, the microcomputer (b) determines that foreign substances and contaminants generated during washing in the drain valve 7 are not caught or accumulated, and then proceeds to the drainage completion determination step 32 and is in progress. It is determined whether the drainage is completed, and if the ongoing drainage is not completed, go to the drainage step 30 to continue draining until the drainage is completed, and then proceed to the next administration when the drainage is completed.

On the other hand, if there is no change in the drainage level as a result of the determination in the drainage water level determination step 31, the microcomputer (b) is not drained due to the foreign matter and contaminants generated during washing in the drain valve 7 due to being stuck or stacked. In the microcomputer (b), it is determined that the drain synchronous motor operation step 33 controls the drain synchronous motor driving unit (bar) to operate the drain synchronous motor 4 to 5 times to open the drain valve (7). Subsequently, it is determined that there is a change in the water level drained through the water level sensor 6 by controlling the water level detecting unit d. In the microcomputer (b), foreign matter and contaminants trapped or accumulated in the drain valve (7) during washing are determined to be drained and separated by the operation of the drain motor. Go to the drainage completion determination step 32 to continue draining until the ongoing drainage is completed, and then proceeds to the next administration when the drainage is completed.

However, if there is no change in the drainage level as a result of the determination in the second drainage water level determination step 34, the foreign matter and contaminants trapped or accumulated in the drain valve 7 are not relaxed or separated in the microcomputer (b). It is determined that the go to the drainage error display step (35) to indicate that there is an abnormality in the drain valve so that the user can wash after the action.

As described above, the present invention determines whether there is a change in the drainage level during drainage after washing is completed, and if there is no change in the drainage level, the drainage synchronous motor is operated by a predetermined number of times set at random to open the drainage valve and then drain it. If there is no change in the water level, it detects and displays the drainage error as rain, thereby providing the effect of washing while preventing the drainage error in advance due to the clogging of the drain valve temporarily due to foreign substances and contaminants generated during washing. Will be.

Claims (1)

Drainage step (30) for opening and draining the drainage valve when draining after the completion of washing, the first drainage water level determination step (31) to determine the presence or absence of a change in the drainage level in the water level detection unit in the drainage step (30), and the first 1 If the drainage level is changed in the drainage level determination step 31, the drainage completion determination step 32 for draining and completing the drainage is completed while judging whether the drainage is completed, and the change in the drainage level in the first drainage water level determination step 31. If there is not there is a drain synchronous motor operation step (33) for operating the drain synchronous motor 4-5 times, and the drain synchronous motor operation step 33, the second judging whether there is a change in the water level in the state in which the drain synchronous motor is operated If there is a change in the drainage level in the drainage water level determination step 34 and the second drainage water level determination step 34, the water is drained until the drainage is completed. To step 35 Method detects multiple errors in a washing machine, characterized in that the luer to the support.