KR100245430B1 - Rinsing control method of washing machine - Google Patents

Abstract

The present invention relates to a rinsing control method of a washing machine, wherein after the washing stroke is completed, when the rinsing mode is performed, the first rinsing is performed in a state in which water supply and drainage are performed at the same time, and the water level in the washing tank is raised to the initial setting level again. It is for performing rinsing due to overflow.

To this end, when the rinsing mode is started, the present invention supplies water to the water level one level lower than the initial setting level, and then performs a water supply / drainage rinse for a predetermined time in a state where water supply / drainage is simultaneously performed by opening a drain valve, and the primary When the rinse is completed, the rinsing control program comprising the step of supplying water to the initial set water level with the drain valve shut off and performing the water supply rinsing due to the overflow until the rinse end time is built into the microprocessor, so that the floating water in the washing tank as well as the washing tank It is characterized in that it is possible to effectively remove dirt sitting on the bottom.

Description

Rinsing control method of washing machine

The present invention relates to a method for controlling a rinsing operation of a washing machine, and more particularly, when water is rinsed, water is supplied to the water level one or two levels lower than the water level set by the user, and then the water supply and drainage are simultaneously performed by opening the drain valve. In the state, the primary water supply rinsing is performed, and if a certain time elapses during the primary rinsing operation, the drain valve is closed and water is supplied to the initial set water level to perform the water supply rinsing due to overflow. The present invention relates to a rinsing control method of a washing machine capable of removing rinsing power of a washing machine by removing floating matters and opening a drain valve to remove even dirt sitting under a washing tank.

In general, the automatic washing machine is equipped with several types of washing courses so that the time required for washing, rinsing, and dehydration can be optimally adjusted according to the type and amount of the laundry.

For example, laundry that is not timely and frequently washed, such as Maryas, shirts, and handkerchiefs, can be washed in the 'Rapid laundry course', while laundry such as thick blankets, curtains, carpets, hiking bedding, sheets, etc. I can wash it.

In addition, laundry such as high-quality sweaters, cardigans, silk, lingerie, stockings, etc. can be washed in the 'naive washing course', and in the case of general laundry mixed with various kinds of laundry, it is programmed to wash in the 'sensor washing course'. have.

In this case, the sensor washing course operates by various sensors built in the automatic washing machine to automatically set washing, rinsing, dehydration time and proper water level, but the remaining washing course allows the user to select an appropriate water level according to the laundry. have.

FIG. 1 is a control block diagram illustrating a part of a configuration of a washing machine which should be basically provided in order to realize the above-mentioned multifunction. The washing process of a course selected by a user by incorporating a memory device, a central processing unit, and an input / output device is shown. There is provided a one-chip microprocessor 20 for controlling the overall.

The microprocessor includes a key input unit 12 for receiving a washing machine driving signal from an external user for setting automatic / manual washing or various types of washing courses, and a quantity detecting unit 11 for detecting an amount of laundry. And, the water level detection unit 13 for detecting the amount of water in the washing tank to supply the water level determined according to the output of the quantity detection unit or the water level arbitrarily set by the user is configured to each connected to the input port.

In addition, the microprocessor includes a motor driving unit 31 for controlling the operation of the motor during washing and dehydration stroke, a supply / drain valve driving unit 32 for opening and closing the water supply valve and the drain valve, and an overall operating state of the washing machine. The display unit 33 for displaying so that the user can check is configured to be connected to the output port, respectively.

In the conventional fully automatic washing machine configured as described above, the microprocessor 20 automatically controls the power applied to the washing motor according to the control signal of the output port to automatically wash the washing motor so as to realize the multifunctional washing through washing, rinsing, and dehydrating stroke. In this case, the microprocessor 20 determines the weight of the laundry by the signal detected by the input port.

That is, when the microprocessor 20 drives the washing motor experimentally for an initial arbitrary time and then blocks the washing motor driving signal, the washing motor rotates by inertia even after that, depending on the current washing amount in the washing tank. Since there is a change in the inertia force, the microprocessor 20 can recognize the weight of the laundry through the quantity detection unit 11 as the amount of change in the inertia force.

In addition, the microprocessor 20 determines the water level corresponding to the laundry load currently input on the basis of a predetermined water level table mounted on the EPROM, and supplies water to the water level, and then washes, rinses, and dehydrates the water. The whole laundry stroke is executed.

However, in the conventional washing machine as described above, as a method for improving the rinsing ability when the rinsing stroke is executed after the washing stroke, the water supply rinsing mode of the process as shown in the operation flowchart of FIG. 2 is placed in the microprocessor. have.

This water supply rinse mode opens the water supply valve when the rinsing mode starts (Y branch of step 121) (step 122) and supplies water to one level or less of the initial level (Y branch of step 123). And rinsing operation (step 124), and when the water supply is completed up to the initial set water level (Y branch of step 125), the water supply is stopped (step 126) and the rinsing function is executed until the rinse end time (step 127). It is.

However, in the conventional water supply rinsing method as described above, the washing motor is driven at the time of supplying water up to one level below the initial set water level to perform the rinsing operation simultaneously with the water supply, or the water supply is continuously performed to drain the water by overflowing the reservoir. Since it is possible to remove the suspended matter in the washing tank, it is difficult to remove the dirt that sinks to the bottom of the washing tank, and therefore, such problems have a problem that the rinsing ability is lowered and the washing power is not significantly improved.

Therefore, the present invention was created to solve the above problems, the present invention rinsed in a state where water supply and drainage are simultaneously opened by opening both the water supply valve and the drain valve at the water level one or two levels lower than the initial set water level when rinsing the laundry. When the water is supplied to the initial set level after blocking the drain valve, the water supply rinsing operation is performed again by the overflow, so that the floating water is removed by the overflow during rinsing and the bottom of the washing tank is opened by simultaneous supply / drainage. It is an object of the present invention to provide a rinsing control method of a washing machine that can enhance the rinsing power of the washing machine by realizing all of the precipitate removal.

In order to achieve the above object, the present invention includes the steps of performing water supply by opening the water supply valve when the rinsing mode is started, and checking the water level detection state to determine whether water is supplied to a level one level lower than the initial level. When the water supply to the water level one level lower than the set water level, the step of opening the drain valve to rinse the water and drainage at the same time, the step of checking the water level in the washing tank to determine whether or not lower than the second level of the initial setting water level; Checking a time counter to determine whether a predetermined time has elapsed; Checking the water level in the washing tank in a state in which the water level in the washing tank is lowered to two levels or less of the initial setting water level in the first stage of water supply / draining rinsing state, or when the specified time has elapsed, the drain valve is shut off and the drainage is stopped; Determining whether the water level rises up to the initial setting level, and performing a water supply rinsing due to overflow until the rinse end time when the water supply is shut off when the water supply reaches the initial setting level. Provide a rinsing control method.

1 is a control block diagram showing a part of the configuration of the washing machine for explaining the present invention

2 is an operation flowchart for explaining a rinsing operation of a conventional washing machine

3 is an operation flowchart for explaining a rinsing control method of the washing machine according to an embodiment of the present invention;

11: quantity detection unit 12: key input unit

13: water level detection unit 20: microprocessor

31: motor drive part 32: supply / drain valve drive part

33: display unit

Hereinafter, the rinsing control method of the washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an operation flowchart illustrating a rinsing control method of a washing machine according to an embodiment of the present invention. When water is started in the rinsing mode and water is supplied to a level lower than the initial setting level, the drain valve is opened to supply and drain water. Performing water supply / drainage rinsing for a predetermined time in the same state (steps 211-217), and when the rinsing of the above step is completed, the water supply rinsing due to overflow is performed by supplying water to the initial set level with the drain valve shut off. This can be explained by dividing into steps (steps 218-221) performed until the rinse end time.

That is, the first step is executed when the rinsing mode is started, and the step of opening the water supply valve to supply water (steps 211 and 212) and checking the water level detection state to determine whether the water is supplied to a level lower than the initial level. Step (step 213), and when water is supplied to a level lower than the initial setting level, opening the drain valve to perform rinsing in a state where water supply and drainage are performed at the same time (step 214), and checking the water level in the washing tank to perform initial setting. A determination is made as to whether the water level falls below two levels (step 216), and a time counter is checked to determine whether a predetermined time has elapsed (step 215 and step 217).

The second step is a step performed when the water level in the washing tank falls below two levels of the initial setting level or a predetermined time has elapsed in the water supply / drainage rinsing state of the first step. Step (step 218), checking the water level in the washing tank to determine whether the water level rises to the initial setting level (step 219), and when water is supplied to the initial setting level, the water supply rinsing due to overflow while the water supply valve is shut off and the water supply is stopped. Is performed until the rinse end time (step 220-step 221).

The operation of the present invention as described above is as follows.

After the washing stroke is completed, when the rinsing mode is started as shown in the operation flowchart of FIG. 3 (Y branch in step 211), the microprocessor 20 controls the water supply / drain valve driver 32 to open the water supply valve (step 212). The water level detection unit 13 is checked (step 213) while supplying water to determine the current water level in the washing tank.

At this time, when the water level in the washing tank is supplied to a state one level lower than the initial set water level (Y branch in step 213), the microprocessor 20 controls the supply / drain valve driver 32 again to open the drain valve (step 214), In the state where water supply and drainage are simultaneously performed, the washing motor is driven through the motor driving unit 31 to rinse.

Then, the microprocessor 20 operates the built-in counter t to limit the rinsing operation (step 215) and checks the time while counting the rinsing time (step 217) to determine whether the specified time has elapsed (Y branch in step 217). ), And the water level detection unit 13 is checked (step 216) to determine whether the water level in the washing tank falls below two levels below the initial setting level (Y branch in step 216).

At this time, if the water level in the washing tank falls below two levels below the initial set water level (Y branch of step 216), since the water supply amount is larger than the water supply amount, the drain valve is immediately blocked (step 218) to stop the drainage.

On the contrary, if the water level in the washing tank does not fall below two levels below the initial set water level (N branch of step 216), the microprocessor 20 checks the time counter (step 217) to see if the specified time has elapsed. While determining again, the water supply / drainage rinsing operation is continued until an arbitrarily designated time elapses.

Here, in the water supply / drainage rinsing step of the first step, when the water level in the washing tank falls below two levels below the initial setting level (Y branch in step 216), or when a specified time elapses (Y branch in step 217), the microprocessor 20 By controlling the water supply / drain valve driving unit 32 again to block only the drain valve (step 218), the water level in the washing tank is raised by allowing the water supply and the rinsing to increase in the stopped state.

When the water level in the washing tank rises to the initial set water level in this operation (Y branch in step 219), the microprocessor 20 again controls the water supply / drain valve driving unit 32 to block the water supply valve (step 220), thereby supplying water. And by driving the washing motor in a state in which all the drainage is stopped, the water supply rinsing due to the overflow (overflow) is carried out until the rinse end time and the water is passed to the dehydration stroke.

Therefore, according to the rinsing control method as described above, the water supply / drainage rinsing is first performed for a predetermined time in a state where water supply and drainage are simultaneously performed at a level lower than the initial set water level, and then, when the first rinsing is completed, the washing tank is again. By raising the water level to the initial level and performing the water supply rinsing again due to the overflow, it is possible not only to remove floating matters in the washing tank but also to remove foreign substances on the bottom of the washing tank.

According to the present invention as described above, when rinsing the laundry water to one or two levels lower than the water level set by the user after opening the drain valve to rinse primarily in the water supply and drainage at the same time, and again shut off the drain valve After that, by rinsing secondaryly in the overflow state by supplying water up to the initial setting level, it is possible to effectively remove even suspended matter or sediment, which has the advantage of significantly improving the washing degree.

Claims (1)

When the rinsing mode is started, opening the water supply valve to supply water (steps 211 and 212), checking the water level detection state to determine whether water is supplied to a level lower than the initial level (step 213), and the initial level When the water supply is lowered to one level lower, opening the drain valve to rinse the water and drainage at the same time (step 214), and checking the water level in the washing tank to determine whether the water level falls below two levels below the initial level. (Step 216) and a first step comprising steps of checking a time counter to determine whether a predetermined time has elapsed (step 215, step 217); In the first stage water supply / drainage rinse state, the water level in the washing tank is lowered to two levels or less of the initial set water level, or when the specified time has elapsed, the water supply in a state in which the drain valve is stopped and drained and stopped (step 218), Determining whether the water level rises up to the initial set level by checking the water level (step 219); and if the water is supplied to the initial set level, performing a water supply rinsing due to overflow until the rinse end time while the water supply is shut off. A rinsing control method of the washing machine of the second step consisting of (step 220-step 221).

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