KR20030016462A - Method sensing leakage water of feed water valve - Google Patents

Abstract

PURPOSE: A method for sensing water leakage of a water supply valve is provided to automatically remove impurities from the water supply valve in the case of the water leakage due to the impurities, thereby reducing the cost and time required for repairing the water supply valve. CONSTITUTION: A method for sensing water leakage of a water supply valve includes the steps of sensing a water level and storing the water level to a microcomputer as water supply for a washing tub is finished by a water supply valve(S1-S3), sensing the water level periodically while carrying out washing and rinsing stroke after the water supply and storing the sensed water levels to the microcomputer(S4,S5), determining water leakage of the water supply valve if the water levels sensed in the second step increase more than a predetermined set value from the water level stored in the first step(S6). If the water leakage is detected, the washing and rinsing stroke is temporarily stopped and on/off operation for the water supply valve is alternately repeated by set conditions(S7,S8).

Description

Method for detecting leakage of feed water valve

The present invention relates to a leak detection method of a water supply valve, and more particularly, to leak of a water supply valve during washing and rinsing strokes of a washing machine, so that a leak of the water supply valve can be prevented in advance by a leak of the water supply valve. To a sensing method.

In general, when a washing machine puts soiled clothing into a washing solution, the detergent separates the fibers from the fibers due to the chemical action of the detergent, but the action of the detergent alone takes a long time, so that the speed of slipping out is increased by applying mechanical action such as friction or vibration. Will perform the action.

In the washing operation control of the washing machine, first, by detecting the quantity of clothes or the like put into the washing tank, if the quantity is determined, the water flow, the detergent, and the total washing time are set according to the quantity, and then the pulsator is rotated in reverse with the whole washing time Vortex the water through the laundry to perform the laundry administration to separate the stains on the laundry by friction with the laundry.

Next, when the washing administration is completed, the turbid water is discharged and the fresh water is supplied from the washing tank to perform a rinsing cycle for rinsing for the number of times already set in the system. When the rinsing stroke is completed, the water in the washing tank is discharged and the induction motor is rotated at a high speed at a predetermined speed to remove the laundry water by centrifugal separation to perform dehydration stroke.

The water supply valve is connected to the rear end of the upper panel of the washing machine to supply the washing water into the washing tank.

In the case of the manual washing machine, the water supply selection and the water supply switch are manually operated to supply the washing water into the washing tank and the dehydrating tank.In the case of the fully automatic washing machine, the water supply valve is connected to the faucet and the faucet is opened. The water supply valve automatically opens and closes by an electric clock timer to perform water supply, washing, draining, and rinsing.

In general, the water supply valve uses tap water supplied through a water pipe introduced into each individual home and ground water separately installed and used in each home.

Therefore, foreign substances are introduced into the water supply valve due to the debris of groundwater generated by using the groundwater and groundwater generated from the water pipes flowing into the individual homes, which causes water leakage and no water supply of the water supply valve. There is a problem in that a cost and time loss for the repair of the valve occurs.

The present invention has been made to solve the above-mentioned problems of the prior art, the object of the present invention is to prevent the leakage or no water supply of the water supply valve which can be generated by the foreign matter introduced into the water supply valve while the washing machine performs the washing and rinsing stroke It is to make it possible to remove foreign substances automatically.

1 is a flow chart illustrating a leak detection method of a water supply valve according to the present invention.

According to a feature of the water leak detection method of the water supply valve according to the present invention for solving the above problems, the washing water in the washing tank for washing and rinsing stroke in the washing machine when the water supply is completed to detect the water level and store in the microcomputer Step 1 and step 2, wherein the washing and rinsing stroke is performed after the water supply is completed in the step 1, and the water level of the washing machine during the washing and rinsing stroke at the same time performing the step 2 to detect at a predetermined time interval in the microcomputer When the water level of the washing tank sensed in step 3 and in step 3 increases above a predetermined value compared to the water level stored in the first step, it is determined that a leak of the water supply valve is generated and the water supply valve is set to a condition. Therefore, it consists of four steps of repeatedly performing the on / off operation.

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

2 is a flowchart illustrating a leak detection method of a water supply valve according to the present invention.

In the leak detection method of the water supply valve according to the present invention, the washing water is first supplied from the water supply valve to the washing tank for the washing and rinsing stroke in the first step (see S1).

In the second step, when the water supply is completed in the first step, the water level (a) of the washing tank is sensed and stored in the microcomputer (see S2 and S3).

Here, whether or not the water supply is completed is determined by the time and water level at which the washing water is supplied to the washing tank.

In the third step, when the water supply is completed in the first step, the washing and rinsing stroke is performed, and the water level (b) of the washing tank detected in a predetermined time unit (t) is stored in the microcomputer (see S4 and S5).

Step 4 compares the water level (a) detected in step 2 with the water level (b) detected in step 3 to determine whether the water level (a) detected in step 2 is high (see S6).

In step 5, when the water level (a) detected in the first step in step 4 is lower than the water level (b) detected in the second step, it is determined that a leak occurs in the water supply valve, and thus the washing and rinsing stroke is temporarily stopped. Stop (see S7).

In step 5, after the washing and rinsing stroke is suspended in step 5, the operation of turning on the water supply valve for a set time t1 and then turning off the water supply valve for a set time t2 is performed for a set number of times n. Repeatedly performed (see S8).

Step 7 performs the washing and rinsing stroke when the foreign matter is removed from the water supply valve after the operation of step 6 (see S9).

The leak detection method of the water supply valve of the present invention configured as described above stops the operation of the washing machine and sets the water supply valve when the water level increases due to the inflow of foreign matters into the water supply valve during operation of the washing machine. Since the foreign matter can be automatically removed by repeatedly performing the on / off operation according to the condition, the cost and time for repairing the water supply valve are reduced, thereby improving the reliability of the water supply valve.

Claims (2)

A first step in which the water level is detected and stored in the microcomputer when the wash water is completed through the water supply valve in the washing tank for washing and rinsing in the washing machine; The second step in which the washing and rinsing strokes are performed after the water supply is completed in the first step and the water level of the washing tank is detected at a predetermined time interval and stored in the microcomputer; When the water level of the washing tank stored in the step 2 increases above a predetermined set value compared to the water level stored in the first step, it is determined that a leak of the water supply valve has occurred, so that the washing and rinsing stroke is paused and the water supply valve is stopped. Leak detection method of the water supply valve, characterized in that consisting of three steps to perform the on / off operation alternately repeatedly according to a set condition. The method of claim 1, The on / off operation of the water supply valve in the step 4, the leakage detection method of the water supply valve, characterized in that for performing a predetermined number of times alternately for each set time.