KR100468914B1 - Washing machine having water feeding device and control method thereof - Google Patents

Abstract

The present invention relates to a washing machine having a water supply device having an improved water supply system so as to prevent clogging of a water supply path by a detergent so that water supply and detergent dissolution injection can be performed smoothly, and a control method thereof.

To this end, the present invention provides a washing machine having a water supply device having a detergent dissolving device on a water supply path so that detergent can be dissolved by water supplied into a water tank, wherein the water supply device is inlet so that water can be supplied toward the detergent dissolving device. A main water supply pipe connected to an external water supply pipe and an outlet connected to the detergent dissolving device, a main water supply valve for opening and closing the main water supply pipe, a connection pipe connecting the outlet of the detergent dissolving device and the water tank, and the connection An inlet is connected to the external water supply pipe and the outlet is connected to the connecting pipe so that the water can be directly supplied to the pipe, and an initial water supply valve for opening and closing the initial water supply pipe.

Description

Washing machine with water supply and its control method {WASHING MACHINE HAVING WATER FEEDING DEVICE AND CONTROL METHOD THEREOF}

The present invention relates to a washing machine, and more particularly, to a washing machine having a water supply device having an improved water supply system so as to prevent clogging of the water supply path and smoothly supply water and detergent dissolution.

In general, a washing machine is a device for washing through friction between each other by stirring together laundry, washing water, detergent put into the washing tank using the driving force of the motor.

Among the washing machines having such a function, a conventional drum washing machine is provided with a drum-shaped water tank 2 for fresh water of washing water in the main body 1, as shown in FIG. 1, and has a motor inside the water tank 2. The washing tank 4 which rotates by the drive of (3) is provided. In addition, the drum washing machine is provided with a water supply device (5) installed on the upper part of the water tank (2) to supply washing water to the inside of the water tank (2) and to dissolve the detergent in the water supply process, and after completion of washing the water tank (2) It is provided with a drainage device 6 is installed in the lower portion of the water tank (2) to forcibly drain the washing water inside.

In addition, the upper water supply device 5 is a detergent dissolving device installed in the upper front of the main body 1 so that the detergent is dissolved by the water supply water and the water supply valve (5a) is installed on the rear upper portion of the main body (1) 5b, a water supply pipe 5c connecting the outlet of the water supply valve 5a and an inlet of the detergent dissolving device 5b, and a connecting pipe connecting the outlet of the detergent dissolving device 5b and the upper portion of the water tank 2; (5d).

In the water supply device 5, when the water supply valve 5a is opened, the water supplied from the external water supply pipe 7 is supplied to the detergent dissolving device 5b through the water supply pipe 5c to clean the detergent inside the detergent dissolving device 5b. It is intended to dissolve, so that the water in which the detergent is dissolved can be supplied to the inside of the water tank (2) through the connecting pipe (5d).

However, since the water supply device of the conventional washing machine is configured such that the water to be supplied is necessarily passed through the detergent dissolving device 5b, the detergent in the detergent dissolving device 5b is supplied in the process of supplying the washing water to the water tank 2 together with the detergent. In some cases, the water flows toward the connection pipe 5d without dissolving. In this case, the water supply is not smooth due to the closing of the connection pipe 5d by the detergent, and the water supplied overflows around the detergent dissolving device 5b. There was a problem.

In particular, in the conventional water supply device 5, when the residual detergent is hardened in the connection pipe 5d between the water tank 2 and the detergent dissolution device 5b, the phenomenon of closing the connection pipe 5d by the detergent is further intensified. There was a problem.

The present invention is to solve such a problem, an object of the present invention is that a part of the water to be supplied is first supplied to the connecting pipe to ensure the water supply path of the connecting pipe in advance to prevent clogging of the connecting pipe by the detergent, It is to provide a washing machine and a control method having a water supply device to enable a smooth water supply and detergent injection through this.

1 is a cross-sectional view showing the configuration of a washing machine equipped with a conventional water supply device.

2 is a cross-sectional view showing the configuration of a washing machine with a water supply device according to the present invention.

3 is a control block diagram of a washing machine having a water supply device according to the present invention.

4 is a flowchart illustrating a water supply control process of a washing machine having a water supply device according to the present invention.

5 is a flowchart illustrating a water supply control process of a washing machine having a water supply device according to the present invention, which shows another embodiment.

Explanation of symbols on the main parts of the drawings

10: body, 11: tank,

12: washing tank, 20: water supply,

21: detergent dissolving device, 22: main water supply pipe,

23: main water supply valve, 24: connector,

25: initial water supply line, 26: initial water supply valve.

In order to achieve the above object, the present invention provides a washing machine having a water supply device having a detergent dissolving device on a water supply path so that detergent can be dissolved by water supplied into a water tank, wherein the water supply device is directed toward the detergent dissolving device. A main water supply pipe connected to an external water supply pipe and an outlet connected to the detergent dissolving device to supply water, a main water supply valve for opening and closing the main water supply pipe, and a connection connecting the outlet of the detergent dissolving device to the water tank. And an initial water supply pipe connected to the external water supply pipe and an outlet connected to the connection pipe so that water can be directly supplied to the connection pipe, and an initial water supply valve to open and close the initial water supply pipe.

In addition, the present invention is a detergent dissolving device provided on the water supply path so that detergent can be dissolved by water supplied to the tank, the main water supply pipe is connected to the inlet is connected to the external water supply pipe and the outlet is connected to the detergent dissolving device, and A main water supply valve for opening and closing a main water supply pipe, a connection pipe connecting the outlet of the detergent dissolving device and the water tank, an initial water supply pipe connected to the external water supply pipe and an inlet connected to the connection pipe, and the initial water supply pipe. A control method of a washing machine having a water supply device including an initial water supply valve for opening and closing, comprising: an initial water supply control step of opening the initial water supply valve to supply water directly to the connecting pipe at an initial water supply operation according to a water supply command, and the initial water supply Main class opening the main water supply valve to supply water to the detergent dissolving device after a predetermined time elapses after the valve is opened It characterized in that it comprises a water control step.

In another aspect, the present invention comprises the step of controlling the initial water supply valve to be closed at the time point of starting the main water supply control step.

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

Drum washing machine to which the present invention is applied, as shown in Figure 2, the cylindrical water tank 11 is installed in the interior of the main body 10 to enable the fresh water of the wash water can be rotated in the inside of the water tank (11) It is installed so as to have a cylindrical washing tank 12 formed with a plurality of dehydration holes (12a) on the wall. In addition, the water tank 11 and the washing tank 12 are formed such that the opening is directed toward the front of the main body 10 so that the user can take out the laundry from the front of the main body 10, and the water tank 11 in front of the main body 10. The door 13 for opening and closing the opening of) is provided. At this time, the water tank 11 inside the main body 10 is not shown in the drawings, but is supported so that vibration and impact during washing are attenuated by a plurality of suspension gas springs installed on the outer upper portion and buffer means installed on the outer lower portion.

In addition, the rear shaft of the water tank 11 is provided with a rotating shaft 14 for horizontally penetrating the water tank 11 with one end coupled to the rear center of the laundry tank 12 so that the washing tank 12 can be rotatably supported. And a pulley 15 is installed on the rotation shaft 14 extending outwardly of the water tank 11, and the pulley 15 mediates the drive motor 16 and the belt 17 installed under the water tank 11. Leads to. Such a configuration is such that the washing of the laundry filled in the washing tank 12 is performed when the washing tank 12 inside the water tank 11 is repeatedly rotated in the forward direction and the reverse direction by the operation of the driving motor 16.

In addition, the upper portion of the water tank 11 is provided with a water supply device 20 having a detergent dissolving device 21 to supply the washing water into the water tank 11 and to dissolve the detergent in the water supply process, the water tank ( In the lower part of 11), a drainage pump 18a and a drainage pipe 18b are installed to allow the washing water in the water tank 11 to be forcibly drained after completion of washing.

At this time, the water supply device 20 of the washing machine according to the present invention is composed of a detergent box (21a) and a detergent case (21b) for accommodating the detergent box (21a) to be drawn out for the front of the detergent and the body 10 Detergent dissolution device 21 installed in the upper front of the main water supply pipe 22, the inlet is connected to the external water supply pipe 19 behind the main body 10, the outlet is connected to the detergent dissolution device 21, and the main water supply pipe ( The main water supply valve 23 is installed in the middle of the main water supply pipe 22 to open and close 22).

In addition, the water supply device 20 is a connection pipe 24 installed to connect between the outlet of the detergent dissolving apparatus 21 and the water tank 11 so that the washing water supplied to the detergent dissolving apparatus 21 can be guided to the water tank 11. And an inlet connected to the external water supply pipe 19 and an outlet connected to the middle of the connection pipe 24 so that water supplied from the outside can be directly supplied toward the connection pipe 24 without passing through the detergent dissolving device 21. The water supply pipe 25 and the initial water supply valve 26 provided in the middle of the initial water supply pipe 25 to open and close the initial water supply pipe 25 are included. The water supply device 20 is configured to supply water directly to the connection pipe 24 through the initial water supply pipe 25 at the initial water supply operation, thereby preventing the plugging of the connection pipe 24 by detergent in the water supply process, thereby smoothly supplying water. Will be done.

In addition, the present invention is for controlling the water supply operation, as shown in Figure 3, the control unit 30 for the operation control of the water supply device 20, the initial water supply valve 26 in accordance with the signal of the control unit 30 The initial water supply valve driver 34 for opening / closing the main water supply valve, the main water supply valve driver 33 for opening / closing the main water supply valve 23 according to a signal from the control unit 30, and the water level of the water tank 11 And a water level sensor 32.

The following describes the water supply control operation of the washing machine according to the present invention of such a configuration.

As shown in FIG. 4, when a water supply command is transmitted through a water supply switch 31 (corresponding to a washing start button in a conventional washing machine) (S101), the controller 30 first controls to open the initial water supply valve 26. By the water supply to the connection pipe 24 through the initial water supply pipe (25) (S102). In addition, the controller 30 determines whether a predetermined time has elapsed since the water supply through the initial water supply pipe 25 is started (S103). This control allows the water supply to be made to the connecting pipe 24 first without passing through the detergent dissolving device 21 at the beginning of the water supply operation so that the detergent remaining in the connecting pipe 24 is removed. Etc.) can be removed in advance.

If it is determined that a predetermined time has elapsed since the initial water supply operation is started (S103), the controller 30 closes the initial water supply valve 26 and controls to open the main water supply valve 23 to supply water through the main water supply pipe 22. To be made (S104). This control is to supply water to the detergent dissolving apparatus 21 through the main water supply pipe 22 in a state in which the water supply path of the connecting pipe 24 is secured through the initial water supply operation. After being dissolved in is to be supplied to the interior of the water tank 11 through the connection pipe (24). This main water supply operation continues until the water level of the water tank 11 reaches the set range. When the water level of the water tank 11 reaches the set range through the detection of the water level sensor 32 installed in the water tank 11 (S105), the controller 30 controls to close the main water supply valve 23. Allow water supply to end.

As described above, the washing machine according to the present invention is controlled so that the main water supply operation combined with detergent dissolution is performed while the initial water supply valve 26 is opened first so that the water supply path in the connection pipe 24 is secured in advance. Blockage phenomenon of 24) can be prevented, and thus smooth water supply is possible.

On the other hand, Figure 5 shows another embodiment of the washing machine water supply control operation according to the present invention.

In the embodiment of FIG. 5, when the water supply switch 31 is operated (S201), the initial water supply valve 26 is first opened at the initial operation (S202). When the initial water supply valve 26 is opened and the initial water supply operation is judged to have proceeded for a predetermined time (S203), the controller 30 controls to further open the main water supply valve 23 (S204). This control is to supply water through the initial water supply pipe 25 and the main water supply pipe 22 after the water supply operation through the initial water supply pipe 25 for a predetermined time. That is, this control is the water supply of the main water supply pipe 22 to serve as detergent dissolution in the situation that the water supply of the connection pipe 24 through the initial water supply pipe 25 is closed phenomenon of the connection pipe 24 by the detergent It is to be prevented more certainly.

When the water supply operation is performed for a predetermined time and it is determined that the water level of the water tank 11 reaches the set water level through the water level sensor 32 (S205), the initial water supply valve 26 and the main water supply valve 23 are simultaneously closed. The water supply operation is terminated by giving (S206).

As described above in detail, the washing machine equipped with a water supply device according to the present invention is controlled so that the initial water supply valve is opened to supply water directly to the connecting pipe through the initial water supply pipe for a predetermined time before the main water supply operation serving as the detergent dissolution is performed. Since the residual detergent in the connection pipe is removed in advance through the water supply to secure the water supply path, the plugging of the connection pipe by the detergent is prevented, so that smooth water supply and detergent injection are performed.

Claims (3)

A washing machine having a water supply device having a detergent dissolving device on a water supply path so that detergent can be dissolved by water supplied to a water tank. The water supply device is a main water supply pipe which is connected to the external water supply pipe and the outlet is connected to the detergent dissolution device so that the water supply to the detergent dissolving device, the main water supply valve for opening and closing the main water supply pipe, and the detergent dissolving device of A connection pipe connecting an outlet and the water tank, an initial water supply pipe connected to the external water supply pipe and an outlet connected to the connection pipe so that water can be directly supplied to the connection pipe, and an initial water supply valve to open and close the initial water supply pipe. Washing machine having a water supply device characterized in that it comprises a. Detergent dissolving device provided on the water supply path to dissolve the detergent by water supplied to the water tank, the main water supply pipe connected to the inlet is connected to the external water supply pipe, the outlet is connected to the detergent dissolving device, and the main water supply pipe opening and closing A main water supply valve, a connection pipe connecting the outlet of the detergent dissolving device and the water tank, an initial water supply pipe connected to the external water supply pipe and an inlet connected to the connection pipe, and an initial water supply to open and close the initial water supply pipe. In the control method of the washing machine with a water supply device including a valve, An initial water supply control step of opening the initial water supply valve to supply water directly to the connecting pipe at the beginning of a water supply operation according to a water supply command; and the main water supply to supply water to the detergent dissolving device after a predetermined time after the initial water supply valve is opened. Control method of a washing machine having a water supply device, characterized in that it comprises a main water supply control step of opening the valve. The method of claim 2, And controlling the initial water supply valve to be closed at the time point of starting the main water supply control step.