KR19980068192A - Washing machine and operation control method - Google Patents

Abstract

The present invention relates to a washing machine and an operation control method, in particular, the washing machine according to the present invention, the amount of drainage detecting means for detecting the drainage amount of the wash water drained to the outside of the washing tank when dewatering, and the wash water detected through the detection means Control means for adjusting the dehydration time according to the drainage amount of, and controlling the operation of the power generating means according to the adjusted dehydration time to perform the dehydration stroke,

The operation control method of the washing machine according to the present invention rotates the washing tank at a high speed so that the laundry is dewatered, detects the amount of drainage at this time, and adjusts the dehydration time according to the detected amount of drainage. By controlling the rotation operation, the remaining washing water remaining in the laundry is dehydrated, and the dehydration operation is performed during the corresponding dehydration time according to the amount of remaining washing water remaining in the laundry, so that the laundry can be dewatered in an optimal state. It can be.

Description

Washing machine and operation control method

The present invention relates to a washing machine and an operation control method, and more particularly, a washing machine and an operation control suitable for detecting a drainage amount during dehydration and adjusting the dehydration time according to the detected drainage amount to dehydrate laundry in an optimal state. It is about a method.

In general, the conventional washing machine, as shown in Figure 1, the detergent container 3 and the operation unit 5 is installed on the upper front of the washing machine main body 1, the rear of the main body is connected to the water supply means not shown The hot and cold water supply valves 7 and 8 are provided to supply hot and cold water.

A tub 9 is provided in the main body 1, and a drum type washing tank 11 is installed to perform washing and dehydration by rotating at high speed simultaneously with the application of power from the power supply means not shown.

A plate 15 is attached to the front of the tub 9 so as to bind the door 13 that opens and closes when the laundry is put into and taken out of the drum type washing tank 11. A counterweight 19 is provided to prevent vibration generated during high speed rotation of the drum type washing tank 11 during dehydration.

In addition, the tub 9 is provided with a power generating means 27 for forward and reverse rotation of the drum type washing tank 11, and drainage hose (not shown) connected to the bottom of the rear of the washing machine main body 1 is connected. The pump 29 is installed, the filter 31 for preventing the drainage pump 29 is blocked by the washing residue such as residual water and dirt flowing out of the tub (9) in the lower front of the main body (1) Is installed.

The drum washing tank 11 has a plurality of through-holes 11a on the front surface thereof so that laundry can be rolled in the drum washing tank 11 and the washing water in the tub 9 can flow into the drum washing tank 11. Is formed, and inside the drum-type washing tank 11, water flow control means (11b) to give the same washing effect as when washing the laundry by dropping up and dropping the laundry at regular intervals by 120 ° each other to wash with a laundry batter It is bound by the fastening means not shown.

An operation process of a conventional washing machine made of the above-described constituent members will be described in more detail with reference to FIG. 1.

First, the user opens the door 13 to put the laundry into the drum washing tank 11, the desired washing course (for example, washing stroke, rinsing stroke, dehydration stroke, time for each stroke, through the operation unit 5, After inputting the reservation time, the number of rinses, etc.) and then operating the start key, a corresponding key signal is provided from the operation unit 5 to the control means not shown.

At this time, when a key signal instructing the start of washing from the operation unit 5 is input to the control means, the control means generates a water supply control signal and a detergent input control signal, and according to the water supply control signal, the hot or cold water supply valve 7 (8) is operated so that the hot water or cold water is supplied to the drum washing tank 11 through the detergent container 3 by a predetermined reference amount, and the detergent is introduced into the drum washing tank 11.

Then, the control means generates a drive control signal, by operating the drive motor not shown in the power generating means 27 to rotate the drum type washing tank 11 to the left and right, so that the laundry in the drum type washing tank 11 is a water flow control means ( 11-b) is repeatedly lifted by the falling motion, through which the laundry is made.

After performing this washing operation during the washing time corresponding to the washing course, the control means generates a drain control signal, and the drain valve shown in the drawing is opened in accordance with the drain control signal, while the drain pump 29 It is operated to drain the washing water in the drum type washing tank 11 to the outside.

Thereafter, the control means generates a drive control signal, and the drive motor in the power generating means 27 rotates at high speed in accordance with the drive control signal to rotate the drum type washing tank 11 at high speed, whereby the washing water remaining in the laundry is washed. Dehydrated.

After performing such a dehydration stroke before rinsing for a rinsing dehydration time corresponding to the washing course, the control means generates a water supply control signal, and the hot or cold water supply valves 7 and 8 according to the water supply control signal. Hot or cold water is supplied to the drum type washing tank 11 by a predetermined reference amount.

Then, the control means generates a drive control signal, by operating the drive motor not shown in the power generating means 27 to rotate the drum type washing tank 11 to the left and right, so that the laundry in the drum type washing tank 11 is a water flow control means ( 11-b) is repeated by the lifting and dropping movement, and the detergent residue and contaminated residual wash water remaining in the laundry is rinsed.

After performing the rinsing operation as described above during the rinsing time corresponding to the washing course, the control means generates a drain control signal, and the drain valve (not shown) is opened in accordance with the drain control signal, while the drain pump 29 Is operated to wash the washing water in the drum type washing tank 11 to the outside.

Thereafter, the control means generates a drive control signal, and the drive motor in the power generating means 27 rotates at high speed in accordance with the drive control signal, thereby rotating the drum type washing tank 11 at high speed, whereby the washing water remaining in the laundry is washed. Dehydrated.

On the other hand, since the amount of remaining washing water remaining in the laundry after the wash water in the drum type washing tank 11 is drained to the outside varies depending on the quality of the laundry (for example, cotton, wool, synthetic fibers, etc.) or the amount of washing, dehydration is performed. Starting and dehydration completion time until the remaining washing water remaining in the laundry is completely dewatered also depends on the quality and the amount of foam.

However, in the conventional dehydration stroke and dehydration stroke before rinsing, the laundry is dehydrated during the corresponding fixed dehydration time according to a predetermined washing course without considering the quantity and the quality of the laundry. There was a problem that dehydration in this optimum state.

As an example, when the dehydration interval of the washing course is set longer than the remaining washing water in which the laundry remains, dehydration proceeds even after the laundry is completely dehydrated, resulting in waste of electric power and damage and wrinkle of the laundry. While this occurred, noise was generated for a long time.

In addition, when the dehydration time of the washing course is set shorter than the remaining washing water remaining in the laundry, the remaining washing water remains in the laundry even after the dehydration operation is completed, and the user has to repeatedly instruct the dehydration operation by manual operation.

Therefore, the present invention has been made to solve the above problems, the present invention detects the drainage drain discharged when dehydration, by adjusting the dehydration time according to the detected drainage, it is possible to dehydrate the laundry in an optimal state The purpose is to provide a washing machine.

On the other hand, another object of the present invention is to provide an operation control method of a washing machine that can adjust the dehydration time according to the amount of drainage during dehydration so that laundry is dewatered in an optimal state.

Washing machine according to the present invention for achieving the above object, the control means for generating a control signal for washing the laundry according to the washing course input through the key input means, the power generating means for generating power, the power generating means Driven by the power generated in the, by applying a physical force to the laundry, the washing tank for washing the laundry, water supply / drainage means for supplying and draining the washing water in the washing tank, the drainage amount of the washing water drained from the washing tank Characterized in that it consists of a displacement detection means for detecting.

The operation control method of the washing machine according to the present invention for achieving the above another object, the washing step of performing a washing stroke or rinsing stroke or dehydration stroke for the laundry according to the selected washing course, and the amount of drainage during the dehydration stroke of the washed system It is characterized in that it consists of a drainage detection step of detecting, and a dehydration control step of adjusting the dewatering time according to the drainage amount detected in the drainage detection step.

1 is a schematic structural perspective view of a conventional washing machine;

2 is a schematic block diagram of a washing machine according to a preferred embodiment of the present invention;

3 is a schematic diagram showing the structure and mounting state of the water level sensor shown in FIG.

4 is a flowchart for explaining an operation of the controller shown in FIG. 2;

FIG. 5 is a flowchart illustrating a detailed operation process of the dehydration control step shown in FIG. 4.

Explanation of symbols for main parts of the drawings

100: operation unit 200: control unit

300: water supply unit 400: power generation unit

500: speed sensor 600: water level sensor

610: water level signal generator 620: buoy

700: drain 710: drain hose

800: drum washing tank

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

Figure 2 is a schematic block diagram of the hardware for performing the operation control method of the washing machine according to the present invention, the operation unit 100, the control unit 200, the water supply unit 300, the power generating unit 400, It consists of a speed sensor 500, a water level sensor 600, a drain 700, and a drum washing tank (800).

In FIG. 2, when the user manipulates an operation key to input a washing course, the operation unit 100 generates a corresponding key signal, and the control unit 200 according to the washing course input through the operation unit 100. Generate various control signals to perform the washing operation.

In addition, the water supply unit 300 selectively provides the drum type washing tank 800 with cold water or hot water supplied from an external water supply unit according to a water supply control signal applied from the controller 200, and the power generator 400 controls the controller. Power is generated according to the driving control signal applied from the 200 to rotate the drum type washing tank 800 forward and backward.

In addition, the speed sensor 500 detects the rotational speed of the drum type washing tub 800 and generates a corresponding speed signal, and the water level sensor 600 is discharged from the drum type washing tub 800 through a drain when washing. It detects the water level and generates a corresponding water level signal.

In addition, the drain unit 700 drains the washing water of the drum type washing tank 800 after each stroke according to the drainage control signal applied from the control unit 200, and the drum type washing tank 800 performs left and right stirring and rotational movements. Through the laundry is performed for the laundry that the user put into it.

On the other hand, Figure 3 is a schematic diagram showing the structure and mounting state of the water level sensor shown in Figure 2, as can be seen with reference to the same figure, the water level sensor 600 in the drain hose 710 of the drain portion 700 It is installed, and consists of the water level signal generator 610 and the buoy 620.

Here, the buoy 620 moves in the vertical direction according to the level of the washing water discharged from the drum type washing tank 800, the water level signal generator 610 generates a level signal corresponding to the displacement of the buoy 620. do.

An operation process of the operation control method of the washing machine according to the present invention through the hardware configured as described above will be described in more detail with reference to FIGS. 2 to 5.

First, the user opens the door, not shown, and put the laundry and detergent in the drum washing tank 800, and then through the operation unit 100 the desired washing course (for example, washing administration, rinsing administration, dehydration administration, each stroke) A time, a reservation time, a rinsing frequency, etc.) are input (S10), and when the start key is manipulated (S20), a corresponding key signal is provided from the operation unit 200 to the control unit 200.

When the key signal for starting the washing is input from the operation unit 200, the control unit 200 performs the washing operation during the washing time corresponding to the washing course (S30), and the detailed operation process thereof is as follows.

In the step of performing the washing administration (S30), the control unit 200 generates a water supply control signal for supplying a predetermined standard amount of water in the drum type washing tank 800 is applied to the water supply unit 300, water supply unit 300 In accordance with the water supply control signal applied from the control unit 200, the cold water or hot water provided from the external water supply means is supplied in the drum type washing tank 800 by the reference amount.

Next, the control unit 200 generates a driving control signal for rotating the drum type washing tank 800 and applies it to the power generating unit 400, and the driving motor not shown in the power generating unit 400 is the control unit 200. The drum-type washing tank 800 is rotated forward and backward according to a driving control signal applied from the drum.

Accordingly, the laundry is repeatedly lifted up and dropped by the water flow control means omitted in the drum washing tank 800, and the laundry is made through this.

Then, when the washing time corresponding to the washing course has elapsed, the control unit 200 generates a drainage control path, and the drainage unit 500 operates according to the drainage control signal, so that the wash water in the drum type washing tank 800 is external. To be drained.

Thereafter, the control unit 200 generates a drive control signal for rotating the drum type washing tank 800 at high speed (S40), and the drive motor in the power generating unit 400 rotates at high speed according to the drive control signal. The washing tank 800 is rotated at a high speed.

As a result, the remaining washing water remaining in the laundry is drained to the outside through the drainage part 500 from the drum type washing tank 800 rotated at high speed by centrifugal force.

At this time, the control unit 200 performs a dehydration control step of controlling the dehydration time according to the drainage amount of the wash water drained from the drum-type washing tank 800 drained to the outside, and controlling the dehydration operation according to the adjusted dehydration time, (S50), a detailed operation process thereof is as follows. In the dehydration control step (S50), the rotational speed of the drum type washing tub 800 is sensed by the speed sensor 500 during dehydration, and a speed signal corresponding thereto is input to the controller 200, while the drum type washing tub 800 The water level of the wash water drained through the drain is detected by the water level sensor, and the water level signal corresponding thereto is input to the controller 200.

At this time, as can be seen with reference to Figure 5, the control unit 200 detects the dehydration speed of the drum washing tank 800 through the speed signal (S51), the dehydration speed of the drum washing tank 800 is more than a predetermined reference speed The cognition is compared (S52).

Here, if the dehydration rate of the drum type washing tank 800 is less than the predetermined reference speed, the dehydration rate of the drum type washing tank 800 does not reach the proper dehydration rate, so that the control unit 200 of the drum type washing tank 800 is closed. The flow proceeds to the step S51 of detecting the dehydration speed.

If, based on the comparison result of the step (S52), if the rotational speed of the drum washing tank 800 is greater than the reference speed, the control unit 200 is discharged from the drum washing tank 800 according to the water level signal Detects the water level (S53), and compares whether the detected water level is above a predetermined reference level (S54).

On the basis of the comparison result of the step (S54), if the detected water level is equal to or more than the reference level, the control unit 200 determines that the current drainage amount is more than the reference drainage, the step of detecting the discharge water level ( Proceed to S53).

In other words, if the drainage amount is more than the standard drainage amount, since a considerable amount of residual washing water can be inferred to remain in the laundry, the dehydration operation is maintained.

If the detected water level is less than the reference water level, based on the comparison result of step S54, the controller 200 determines that the current water drainage amount is less than the reference water drainage amount, and then drives after a predetermined time. Generate a stop signal, and applies it to the power generating unit 400 (S55).

Accordingly, the drive motor of the power generating unit 400 is stopped by the drive stop signal, the rotation of the drum washing tank 800 is stopped and the dehydration stroke before rinsing is finished.

In other words, if the drainage amount is less than the standard drainage amount, it is possible to infer that the remaining washing water is hardly left in the laundry. Therefore, the dehydration operation is further stopped for a short time and then stopped.

Thereafter, the control unit 200 performs a rinsing stroke during the rinsing time corresponding to the washing course (S60), and a detailed operation thereof is as follows.

In the step (S60) of performing a rinsing stroke, the control unit 200 generates a water supply control signal for supplying a predetermined standard amount of water in the drum type washing tank 800 is applied to the water supply unit 300, water supply unit 300 In accordance with the water supply control signal applied from the control unit 200, the cold water or hot water provided from the external water supply means is supplied in the drum type washing tank 800 by the reference amount.

Next, the control unit 200 generates a driving control signal for rotating the drum type washing tank 800 and applies it to the power generating unit 400, and the driving motor, not shown in the drawing, of the power generating unit 400 is the control unit 200. The drum-type washing tank 800 is rotated forward and backward according to the driving control signal applied from the base.

Accordingly, the laundry is lifted by the water flow control means omitted in the drum washing tank 800, and the falling motion is repeated, and the laundry is rinsed.

When the rinsing time corresponding to the washing course has elapsed, the control unit 200 generates a drainage control signal, and the drainage unit 500 operates according to the drainage control signal to wash the water in the drum type washing tank 800 to the outside. Drained.

For reference, the rinsing stroke as described above may be repeated several times according to the selected washing course.

Subsequently, the controller 200 generates a driving control signal for rotating the drum type washing tank 800 at high speed (S70), and performs dehydration stroke for a time corresponding to the washing course. It is the same as the step (S40) for performing a total dehydration stroke.

In addition, the control unit 200 performs a dehydration control step of controlling the dehydration time according to the drainage amount of the wash water drained from the drum type washing tank 800 and drained to the outside, and controlling the dehydration operation according to the adjusted dehydration time. (S80), the detailed operation process thereof is the same as the detailed operation process of the dewatering tare step (S80).

As described above, the present invention senses the amount of drainage discharged to the outside during dehydration, and adjusts the dehydration time according to the detected amount of drainage, so that the laundry can be dehydrated in an optimal state.

Claims (4)

In the washing machine which washes laundry, A control means for generating a control signal for washing the laundry according to the washing course input through the key input means; Power generating means for generating power, A washing tank driven by the power generated by the power generating means and washing the laundry by applying physical force to the laundry; Supply / drainage means for supplying and draining the wash water in the washing tank, Washing machine, characterized in that consisting of a drain amount detecting means for detecting the drainage amount of the wash water drained from the washing tank. The method of claim 1, Washing machine further comprises a speed detecting means for detecting the rotational speed of the washing tank so that the control means can detect the progress of the dehydration operation. The method of claim 1 or 2, wherein the displacement detection means, Washing machine, characterized in that the water level sensor for detecting the water level of the wash water drained through the supply / drain means. In the operation control method of the washing machine to operate the washing machine according to the selected washing course, A washing step of performing a washing operation or a rinsing operation or a dehydration operation on laundry according to the selected washing course; A drainage detection step of sensing a drainage amount during the dehydration administration of the washing step; And a dehydration control step of adjusting a dehydration time according to the amount of drainage detected in the drainage detection step.