KR20100068882A - Rinse course control method of washing machine - Google Patents

Abstract

PURPOSE: A washing machine rinse cycle control method is provided to sufficiently rinse laundry and to eliminate the need for increasing the number of times being rinsed. CONSTITUTION: A washing machine rinse cycle control method comprises the following steps. The turbidity of the water supplied to perform washing cycle is measured and the washing cycle is performed(S12). After completing the washing cycle, the turbidity of the water discharged during rinsing is measured(S28). Comparing the turbidity of the water discharged during rinsing and that of the water supplied in the washing cycle, the level of water to be further supplied for subsequent rinsing cycle is set based on the comparison result(S36). According to the level of water to be further supplied, subsequent rinsing cycle is performed by further supplying water.

Description

Rinse course control method of washing machine}

The present invention relates to a washing machine, and more particularly, to a washing machine rinsing stroke control method for performing rinsing or ending the rinsing cycle by adding water according to the turbidity of the water when rinsing a plurality of times.

In general, a washing machine is a device for cleanly washing foreign substances in laundry such as clothes and bedding by using a friction action of washing water according to an emulsification action of a detergent and a rotational motion and a friction action with laundry.

Such a washing machine has been developed from a manual washing machine which performs all operations manually to a semi-automatic washing machine, an automatic washing machine and a drum washing machine according to the development of the electromechanical technology.

The washing machine configured as described above may sequentially perform washing strokes, rinsing strokes, dehydrating strokes, and drying strokes for a predetermined time period according to the degree of laundry according to a preset algorithm.

In addition, the user may select only a specific stroke among washing, rinsing, dehydrating stroke, and drying stroke, and sets a driving time of the selected stroke to separately perform only the selected stroke for a predetermined time.

In particular, the rinsing cycle is a process for rinsing a laundry in which a washing administration is completed to remove washing materials or debris on the laundry, and it is generally performed a plurality of times according to a user's key input, amount of laundry, and washing time.

The above-described technology is described for understanding the background of the present invention, and does not mean a conventional technology well known in the art.

In the conventional rinsing cycle, the number of rinses is determined by a predetermined program, so when the rinsing proceeds, the level of rinsing water is rinsed to a similar level even if the water level does not correspond precisely according to the amount of water. Only after repeating the rinsing was finished the process.

For that reason, the rinsing water consumption increased because the rinsing control due to the difference in the amount of laundry was not made clear. In particular, this process occurs a lot in the case of a small amount of laundry. In addition, even if a sufficient rinse is not performed, the rinsing was terminated by a predetermined number of times, the detergent could remain in the laundry to provide a cause that can cause skin diseases.

In addition, the rinsing frequency and the water level are determined so that the rinsing is performed regardless of the situation. That is, if the laundry is a small amount of washing water continues to proceed even though the rinse is already sufficiently rinsed before the predetermined number of rinsing water was wasted.

In addition, when the laundry is a large amount, even if a complete rinsing is not performed, there is a problem in that the rinsing is not performed sufficiently by a predetermined rinsing frequency.

The present invention has been made to improve the above-described problem, when performing the rinsing stroke according to the number of rinsing, the rinsing of the washing machine to measure the turbidity of the water drained after washing the laundry to adjust or terminate the level of rinsing water according to the turbidity The purpose is to provide an administrative control method.

The configuration of the present invention, which is invented to achieve the above-described object, is as follows.

In the washing machine rinsing stroke control method of one side of the present invention, in the washing machine rinsing stroke control method of performing a rinse to drain the water from the washing tank after rinsing the laundry by supplying water into the washing tank and driving the motor, Measuring the turbidity of the water supplied to perform the washing stroke and performing the washing stroke, after the washing stroke is finished, measuring the turbidity of the water drained during the rinsing, the turbidity of the water drained during the rinsing Comparing the turbidity of the water supplied in the washing administration to set an additional water level to be watered in the next rinsing according to the comparison result, and additionally watering the water according to the additional water level to perform the next rinsing. It is done.

The additional water level is set for the next stroke every rinse.

The setting of the additional water supply level is characterized in that the rinsing stroke is terminated if the turbidity of the water drained during the rinsing is equal to or less than the rinse end reference value.

The setting of the additional water level may include setting the additional water level when the difference between the turbidity of the water drained during the rinsing and the turbidity of the water supplied during the washing administration is equal to or more than the additional water supply standard.

The additional water level may be set differently from each other depending on the difference between the turbidity of the water drained during the rinsing and the turbidity of the water supplied during the washing stroke.

In the washing machine rinsing stroke control method according to another aspect of the present invention, in the washing machine rinsing stroke control method of performing a rinsing to drain the water from the washing tank after rinsing the laundry by supplying water into the washing tank and driving the motor, Measuring the turbidity of the water supplied to perform the washing stroke and performing the washing stroke, after the washing stroke is finished, measuring the turbidity of the water drained in the rinsing, the turbidity of the water drained in the rinsing rinsing Checking whether the rinse end threshold is less than the end threshold, and checking whether the next rinse is the last rinse; if the next rinse is the last rinse, the turbidity of the water drained during the rinsing and the turbidity of the water supplied during the washing administration Comparing and setting additional water level to be supplied at the last rinse according to the comparison result. Type and is characterized in that it comprises the step of performing the final rinse water by adding water in accordance with said additional water supply level.

The step of checking whether the next rinsing is the last rinsing is characterized in that the rinsing stroke is terminated when the turbidity of water drained during the rinsing is lower than or equal to the rinsing end reference value.

The setting of the additional water level may include setting the additional water level when the difference between the turbidity of the water drained during the rinsing and the turbidity of the water supplied during the washing administration is equal to or more than the additional water supply standard.

The additional water level may be set differently from each other depending on the difference between the turbidity of the water drained during the rinsing and the turbidity of the water supplied during the washing stroke.

According to the present invention configured as described above, when performing the rinsing stroke according to the number of rinsing, by measuring the cleanliness of the water drained after washing the rinsing, by adjusting the water level according to the turbidity, it is possible to rinse the laundry sufficiently at the end of the set number of rinsing, Sufficient rinsing can be achieved without artificially increasing the number of rinses or increasing the number of rinses.

In addition, the effect of the present invention can save the washing water by ending the rinsing cycle when the rinsing is completed within the set rinsing frequency.

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

1 is a block diagram of a washing machine rinsing stroke control apparatus according to an embodiment of the present invention.

Washing machine rinsing stroke control apparatus according to an embodiment of the present invention, as shown in Figure 1, is installed on the front panel during normal washing, the key input unit 20, the washing machine to input various control commands of the user to the control unit 10, washing machine Turbidity sensor 30 for measuring the turbidity of the water supplied and drained inside the washing tank, the water level detection unit 40 for detecting the water level of the water supplied in the washing tank, water supply valve 50 for supplying water into the washing tank, the washing tank The control unit 10 for controlling the overall drain of the drain valve 50 for draining the water inside the washing machine, the motor 70 for rotating the washing tank and the washing machine rinsing stroke control device.

For reference, in the above embodiment, the washing tank is a container for storing laundry therein, and it should be understood that the washing tank is not limited to a washing machine of a pulsator type and includes a drum of a drum washing machine.

The key input unit 20 includes various stroke selection keys for performing at least one of washing stroke, dehydrating stroke, rinsing stroke and drying stroke, and a water level adjusting key for adjusting the amount of water supplied during these strokes, or inside the washing tank. And a water supply and drainage key for supplying and draining water to the outside of the washing machine, and a time setting key for setting the time.

The turbidity sensor 30 measures the turbidity of the water supplied into the washing tank and the water discharged to the outside and inputs it to the controller 10. In general, it is installed in the flow path for supplying and draining water into and out of the washing machine, but can be installed in various positions that are easy to measure the turbidity of the water.

The water level detecting unit 40 is typically installed in the washing tank to sense the level of water supplied to the inside of the washing tank.

The water supply valve 50 is installed in the water supply pipe and turned on or off according to the control signal of the controller 10 to supply water into the washing tank through the water supply pipe.

The drain valve 60 is installed in the drain pipe and turned on or off according to the control signal of the controller 10 to drain the water in the washing tank to the outside of the washing machine through the drain pipe.

The motor 70 is turned on or off in accordance with the control signal of the control unit 10 to rotate the washing tank in an appropriate rotation direction and rotation speed according to each stroke or progress of each stroke.

When the key signal is input from the key input unit 20, the control unit 10 turns on or off the water supply valve 50 or the drain valve 60 to supply or drain water into the washing tank and to drive the motor 70. Rotate the washing tank.

In addition, when the amount of water in the washing tank is input from the water level detecting unit 40, the amount of water in the washing tank is properly adjusted by controlling the water supply valve 50 or the drain valve 60 according to the measured water level. This operation is appropriately performed according to a program preset in each stroke.

In particular, when the rinsing frequency is set according to a key signal input from the key input unit 20, for example, a rinsing frequency setting signal, an amount of laundry, a washing time, and the like, when the rinsing stroke is performed, the controller detects the water level according to the rinsing frequency. The water supply valve 50 and the drain valve 60 are selectively turned on / off according to the washing tank level input from the unit 30, and the motor 70 is driven to rotate the washing tank. That is, the rinsing of the laundry in the washing tank is performed by the set number of rinses. In particular, according to the turbidity of the water drained during rinsing by adjusting the amount of water to be rinsed so that the rinsing is made properly. It will be described in detail below.

This embodiment is the first embodiment in which the last rinsing is performed by using the additional water to add water according to the turbidity drained after the rinsing performed just before the last rinsing when the rinsing frequency is many times, and each rinsing is performed. The turbidity is measured, and according to the result, it is divided into a second embodiment in which rinsing is performed by determining whether additional water is supplied.

First, the first embodiment will be described with reference to FIG.

2 is a flow chart of a washing machine rinsing stroke control method according to a first embodiment of the present invention.

In the washing machine rinsing stroke control method according to the first embodiment of the present invention, the washing time and the rinsing frequency of the washing stroke according to a key signal input from the key input unit 20, for example, a rinsing frequency setting signal, an amount of laundry, and a washing time. If is set, the controller 10 controls the water supply valve 50 to perform the washing stroke to supply water to the inside of the washing tank (S10).

In this process, the water level detecting unit 40 detects the water level supplied to the inside of the washing tank and inputs it to the control unit 10, and the turbidity sensor 30 measures the turbidity of the water supplied into the washing tank and inputs it to the control unit 10. (S12).

When the water level reaches the water level set in the washing stroke, the controller 10 turns off the water supply valve 50 to stop the water supply and turns on the motor 70 to perform the washing stroke. After that, it is checked whether the washing stroke ends (S14), and when the washing stroke ends, the motor 70 is turned off and the drain valve 60 is turned on to drain the water inside the washing tank (S16).

Thereafter, an intermediate dehydration step of rotating the motor 70 at a predetermined rotation speed is performed (S18).

After performing the intermediate dehydration step, the drain valve 60 is turned off and the water supply valve 50 is turned on to supply water to the washing tank (S20), and the motor 70 is turned on to rinse (S22).

When rinsing is performed for a set time, the drain valve 60 is turned on to drain the water in the washing tank (S24), and the rinsing stroke is terminated, that is, whether the rinsing is performed by the set number of rinsing cycles (S26), and If rinsing has been performed as many times as the number of rinses, the rinsing cycle is terminated and main dehydration is performed (S38).

On the other hand, if the rinse is not performed by the set number of rinses, the turbidity of the water is measured (S28), it is determined whether the turbidity of the water is less than the rinse end standard value for the end of the rinsing stroke (S30). As a result of the determination, if the rinse end value is less than or equal to the end, the rinsing stroke is terminated and main dehydration is performed (S38).

On the other hand, if the rinse end threshold is exceeded, it is checked whether the next rinse is the last rinse, that is, whether the rinse count is left once (S32), and if the rinse count is left at least two times, the process after the intermediate dehydration (S18) is performed. If the number of rinsing times is left, it is determined whether the difference between the turbidity of the water measured at the time of rinsing and the turbidity of the water measured at the time of washing is less than the additional water supply standard (S34).

In other words, if the number of rinsing times remains two or more times, the process after the above-described intermediate dehydration is performed, and if the number of rinsing times is left once, it is determined whether additional water is supplied.

On the other hand, if the difference between the turbidity measured at the time of rinsing and the turbidity measured at the time of washing is more than the additional water supply standard value, the additional water level corresponding to the difference between the turbidity measured at the time of rinsing and turbidity measured at washing is set (S36). After performing the process (S18), after the water is supplied according to the set additional water level, that is, the subsequent process, that is, rinsing, while the difference between the turbidity measured during rinsing and the turbidity measured during washing is less than the additional water supply standard, an intermediate dehydration process After performing (S18), the subsequent process is performed at the level set according to the predetermined program.

Here, the additional water supply levels are set differently from each other according to the difference between the turbidity measured at the time of rinsing and the turbidity measured at the time of washing.

3 is a flow chart of a washing machine rinsing stroke control method according to a second embodiment of the present invention.

Washing machine rinsing stroke control method according to a second embodiment of the present invention will be briefly described for the same parts as the first embodiment.

The washing machine rinsing stroke control method is performed, and the same parts as in the first embodiment will be briefly described.

That is, the washing machine rinsing stroke control method according to the second embodiment of the present invention measures the turbidity when water is supplied to the washing tank to perform the washing stroke, and washes the laundry inside the washing tank. When the washing administration is finished, drain the water inside the washing tank, and performs an intermediate dehydration (S100 ~ S108).

Thereafter, after rinsing the laundry by using the water in the washing tank at every rinsing, in the process of draining (S110 to S114), turbidity is measured (S118), and it is determined whether the measured turbidity is equal to or less than the rinse end standard value (S120).

As a result of the determination, if the turbidity measured at the time of rinsing is less than the rinse end threshold, the difference between the turbidity measured at the time of rinsing and the measured turbidity at the time of washing is less than the additional water supply standard (S122). If the difference is more than the additional water supply standard value is set (S124) after the intermediate dewatering (S108), the water supply to the set additional water supply level and performs the subsequent process.

On the other hand, if the difference between the turbidity measured during rinsing and the turbidity measured during washing is less than the additional water supply standard, the additional water level is not set, and after the intermediate dehydration (S108), the water is supplied to the water supply level according to a predetermined program, and then thereafter. Do this.

Here, each time the drainage process after rinsing is performed to determine whether the rinsing stroke is terminated by performing the last rinsing according to the number of rinsing cycles (S116), when the rinsing stroke is finished, main dehydration is performed (S126).

The additional water level is set differently from each other depending on the difference between the turbidity measured at the time of rinsing and the turbidity measured at the time of washing.

Although the present invention has been described with reference to the embodiments shown in the drawings, it is merely exemplary and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims.

1 is a block diagram of a washing machine rinsing stroke control apparatus according to an embodiment of the present invention.

2 is a flow chart of a washing machine rinsing stroke control method according to an embodiment of the present invention.

3 is a flow chart of a washing machine rinsing stroke control method according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: control unit 20: key input unit

30; Turbidity sensor 40: water level detector

50: water supply valve 60: drain valve

70: motor

Claims (9)

In the washing machine rinsing stroke control method of performing a rinse to drain the water from the washing tank after rinsing the laundry by supplying water to the inside of the washing tank and driving the motor, Measuring the turbidity of the water supplied to perform the washing stroke and performing the washing stroke; Measuring the turbidity of water drained during the rinsing after the washing stroke is finished; Comparing the turbidity of the water drained during the rinsing with the turbidity of the water supplied during the washing administration to set an additional water level to be watered upon the next rinsing according to a comparison result; And Washing water rinsing stroke control method comprising the step of performing the next rinsing by additionally watering the water according to the additional water supply level. The washing machine rinsing stroke control method according to claim 1, wherein the additional water supply level is set for the next stroke every time the rinse is performed. The method of claim 2, wherein the setting of the additional water supply level comprises terminating a rinsing stroke when the turbidity of the water drained during the rinsing is equal to or less than a rinse end reference value. The washing machine according to claim 2, wherein the setting of the additional water supply level comprises setting the additional water supply level if a difference between the turbidity of the water drained during the rinsing and the turbidity of the water supplied during the washing stroke is equal to or more than an additional water supply reference value. Rinsing stroke control method. The washing machine rinsing stroke control method according to claim 4, wherein the additional water level is set differently according to a difference between the turbidity of the water drained during the rinsing and the turbidity of the water fed during the washing stroke. In the washing machine rinsing stroke control method of performing a rinse to drain the water from the washing tank after rinsing the laundry by supplying water to the inside of the washing tank and driving the motor, Measuring the turbidity of the water supplied to perform the washing stroke and performing the washing stroke; Measuring the turbidity of water drained during the rinsing after the washing stroke is finished; Checking whether the turbidity of the water drained during the rinsing is less than or equal to the rinse end threshold, and if the rinse end threshold is exceeded, checking whether the next rinse is the last rinse; If the next rinsing is the last rinsing, comparing the turbidity of the water drained during the rinsing with the turbidity of the water fed in the washing stroke and setting an additional water level to be watered during the last rinsing according to a comparison result; And Washing water rinsing stroke control method comprising the step of performing the last rinsing by additionally watering the water according to the additional water supply level. The method of claim 5, wherein the checking of whether the next rinsing is the last rinsing comprises ending a rinsing stroke when the turbidity of water drained during the rinsing is equal to or less than the rinsing end threshold. 6. The washing machine according to claim 5, wherein the setting of the additional water supply level comprises setting the additional water supply level when a difference between the turbidity of the water drained during the rinsing and the turbidity of the water supplied during the washing stroke is equal to or more than an additional water supply reference value. Rinsing stroke control method. The washing machine rinsing stroke control method according to claim 8, wherein the additional water supply level is set differently according to a difference between the turbidity of the water drained during the rinsing and the turbidity of the water supplied during the washing.

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