KR19980023428A - Overflow device of washing machine and control method - Google Patents

Abstract

The overflow apparatus of the washing machine for removing the foreign matter or detergent residue generated during washing by overflowing with the optimum amount of water and time, and the control method thereof. A second overflow pipe is installed in the area, and a second drain valve for overflowing and draining through the second overflow pipe is installed, and the existing first drain valve is operated when the water level is set higher than the second overflow level. Overflow through the first overflow pipe, and when the user sets the second overfloor water level, which is a high level of the user's use, or below the water level, the second drain valve is operated to overflow through the second overflow pipe. Removes debris or detergent residues can save time and water.

Description

Overflow device of washing machine and control method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly, to an overflow apparatus for a washing machine for removing foreign substances or detergent residues generated from laundry during washing or rinsing, and a control method thereof.

1 is a block diagram illustrating an internal configuration of a general washing machine. The controller 10 controls overall operations of each unit, and a key input unit for selecting various functions of the washing machine by using an input key and transmitting the selected functions to the controller 10. 11) and a water supply valve driver 12 for driving the water supply valve under the control of the controller 10 according to a function selected by the user through the key input unit 11, and water supplied by the water supply valve driver 12 when dewatering. Receiving a control signal from the drain valve drive unit 13 for driving the drain valve so that the wash water can be drained, the water level detector 14 for detecting the water level in the washing tank under the control of the controller 10, and the control unit 10. It consists of a motor drive unit 15 for driving the motor M ₁ to proceed with the washing process, and a display unit 16 for displaying the operating state of the washing machine to the outside.

Referring to the accompanying drawings, the overflow device of the washing machine according to the prior art having such a configuration as follows.

Figure 2 is a longitudinal sectional view showing an overflow device of a washing machine according to the prior art.

Referring to FIG. 2, the washing tub 23 is rotatably installed in the outer tub 22 of the main body 21, and washing blades agitated left and right during washing and dehydration in the lower center of the washing tub 23. 24 is installed, and the drive shaft 26 of the clutch 25 provided on the bottom surface of the outer tub 22 is fastened to the washing tub 23 and the washing vane 24, and installed on one side of the bottom surface of the outer tub 22 to control the controller. The motor pulley 29 and the clutch pulley 30 are provided so that the V-belt 28 is wound around the motor 27 and the clutch 25 driven by the control signal of 10, respectively.

In addition, a water supply valve 31 for supplying washing water to the inside of the outer tub 22 is installed at one upper side of the main body 21 by a control signal of the control unit 10, and a control unit at the lower one side of the main body 21. According to the control signal of 10), the drain valve 32 for discharging the washing water in the outer tub 22 to the outside of the main body 21 through the drain hose 33 is configured.

In addition, the overflow tube 34 for removing foreign matters such as detergent residues is installed at one upper side of the washing tank 23.

The overflow device of the washing machine according to the related art, which is configured as described above, has an over water level that reaches the overflow pipe 34 by the water supply valve 31 to remove foreign substances or detergent residues generated from laundry, etc. as the washing machine proceeds. Continue watering up to the floor level.

When the water supply proceeds and reaches the overflow level, the drain valve 32 is operated to naturally drain water together with the wash water through the overflow pipe 34 to remove foreign substances and detergent residues in the washing tank 23.

Here, the overflow level is a level above the high level.

The overflow apparatus of the washing machine according to the related art has to supply water to an overflow level which is higher than a high water level in order to remove foreign substances and the like even during an administrative process at a low water level.

Therefore, there is a problem in that a lot of water is used and a lot of time is required to supply water to an overflow level.

Accordingly, the present invention has been made to solve the problems of the prior art, the object of the present invention is to remove the foreign matter or detergent residues generated in the laundry during the washing or rinsing stroke by overflowing with an optimum amount of water and time An overflow device for a washing machine and a control method thereof are provided.

1 is a block diagram illustrating an internal configuration of a general washing machine;

Figure 2 is a longitudinal sectional view showing the overflow device of the washing machine according to the prior art,

3 is a longitudinal sectional view showing an overflow device of a washing machine according to the present invention;

4 is a flow chart for performing the overflow of the washing machine according to the present invention,

5 is a view showing the frequency according to the water level of the washing machine according to the present invention.

* Description of the symbols for the main parts of the drawings *

23: washing tank 31: water supply valve

32: First drain valve 34: First overflow pipe

40: second overflow pipe 41: second drain valve

The overflow apparatus of the washing machine and the control method thereof according to the present invention are provided with a second overflow pipe in a predetermined region in the washing tank below the first overflow pipe, which is set in advance, and an overflow through the second overflow pipe. The second drain valve is installed to drain water, and when the water level is set higher than the second overflow level, the existing first drain valve is operated to overflow through the first upper follower pipe, and the user has a high level of use. When setting the water level below or below the second overflow water level, the second drain valve may be operated to overflow through the second overflow pipe to remove foreign matters or detergent residues.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the overflow device and a control method of the washing machine according to the present invention will be described in detail.

3 is a longitudinal sectional view showing an overflow device of a washing machine according to the present invention, Figure 4 is a flow chart for performing the overflow of the washing machine according to the present invention, Figure 5 is a frequency for each level of the washing machine according to the present invention The figure shown.

Referring to FIG. 3, the first over-floor pipe 34 installed on one side of the upper part of the washing tank 23 and the lower one of the outer tub 22 in the main body 21 is installed on the first over-floor pipe 34. The first drain valve 31 for discharging the foreign matter or detergent residue overflowed through the main body 21 to the outside of the main body 21, and the second overflower installed in a predetermined region in the washing tank 23 below the first overflow pipe 34. A second drain valve 41 for discharging foreign matter or detergent residues overflowed through the pipe 40 and the second over-floor pipe 40 to the outside of the main body 21 is provided.

Here, the first overflow water level to the first overflow pipe 34 is a high water level of at least a high water level.

Here, the second over-floor water level to the second over-floor pipe 40 is the middle water level that is most used by the user during washing.

And since the overflow device of the washing machine according to the present invention, which is not described, is the same as the prior art of FIG. 2, a detailed description thereof will be omitted.

In this way, when the water level is set higher than the second overflow water level, the overflow occurs through the first overflow pipe 34, and when the level of the second overflow water level or less is set, the second overflow pipe 40 Overflow through to remove foreign substances or detergent residues generated during washing.

Referring to the accompanying drawings, the washing machine overflow method according to the present invention configured and operated as follows.

Referring to Figures 1, 3 and 4, the user applies the power to the washing machine and sets the overflow mode for removing foreign matters or detergent residues during the administration (S100).

Then, the water supply valve driving unit 12 turns on the water supply valve 31 to proceed with water supply (S101), and the water level detection unit 14 continuously detects the water level while the water is being supplied, and is initially set by automatic dose detection. The water is supplied until the water level reaches one level lower than the water level (hereinafter referred to as the reset water level) (S102).

Here, the reset level is less than the first or second overflow level, which is the level of arrival to the first or second overflow pipes 34 and 40.

When the water level reaches the reset water level, the water supply valve 31 is turned off, and the washing process is performed during the washing stroke time set by the user (S103). Then, the motor 27 is turned off by the drive unit 15 to perform the washing operation. Complete (S104).

At this time, the washing water may be lower than the reset water level in the above step (S102) due to the wash water is absorbed in the laundry during the progress of the washing process, so whether the water level is equal to the reset water level set in the above step (S102) Determine (S105).

First, when the water level is the same as the reset water level, the water supply valve 31 turns on the water supply valve 31 to supply water (S106).

While the water supply is detected, the water level is detected and the water supply proceeds to the reset level +1 level (S107), wherein the reset level +1 level is a level above the first overflow or the second overflow.

here. If the reset water level is low, it is preset and programmed in the control unit 10 as the low medium +1 water level (see Fig. 5).

When the water supply proceeds and reaches the reset level + 1 level, the water supply valve 31 is turned off and the drain valve driver 13 operates the first drain valve 32 or the second drain valve 41 to proceed with drainage. (S108).

At this time, foreign matter or detergent residues generated in the laundry which is floating during the washing stroke is automatically passed through the drain hose 33 through the first over-floor pipe 34 or the second over-floor pipe 40, and then the main body ( 21) It is discharged to the outside.

Here, if the reset level + 1 level is higher than the second overflow level, the first drain valve 32 is operated to overflow through the first overflow pipe 34 to remove foreign matter or detergent residues.

Then, when the reset level + 1 level is the second over-floor level or less, the second drain valve 41 is operated to remove foreign matter or detergent residues through the second over-floor pipe 40.

On the other hand, if the water level is not the same as the reset level in the above step (S105) is detected that the water level is lowered, and proceeds to the water supply (S109) to supply the water to the reset level +2 level (S110).

When the water supply proceeds and reaches the reset water level +2 water level, the water supply valve 31 is turned off, and the water drain valve driver 13 operates the first drain valve 32 or the second drain valve 41 to proceed with drainage. (S108).

At this time, foreign matter or detergent residues generated in the laundry which is floating during the washing stroke is automatically passed through the drain hose 33 through the first over-floor pipe 34 or the second over-floor pipe 40, and then the main body ( 21) It is discharged to the outside.

Here, if the reset level + 2 level is higher than the second overflow level, the first drain valve 32 is operated to overflow through the first overflow pipe 34 to remove foreign matter or detergent residues.

Then, when the reset level + 2 level is the second level of the overflow level or less, the second drain valve 41 is operated to remove foreign substances or detergent residues through the second overflow valve 40.

In this way, the foreign matter or detergent debris generated during washing is removed, and the rest of the process is performed to complete the washing (S111).

The overflow mode progressed in such a process is performed not only at the washing stroke but also at the rinsing stroke.

The overflow device of the washing machine and the control method thereof according to the present invention can save water and use time since the foreign matter or detergent residue is removed through the first over-floor pipe or the second over-floor pipe according to the water level during the washing process of the washing machine. It has an effect.

In addition, since the overflow is performed not only at the washing stroke but also at the rinsing stroke, it is possible to increase the effect of removing foreign substances and detergent residues.

Claims (7)

In the washing machine provided with a washing tank, A first over-floor tube installed at an upper side of the washing tank; A first drain valve for discharging foreign matter and detergent residues through the first overflow pipe; A second over-floor pipe installed in a predetermined region in the washing tank below the first over-floor pipe; Overflow apparatus of the washing machine comprising a second drain valve for discharging foreign matter and detergent residues through the second over-floor pipe. The method of claim 1, The overflow level device of the washing machine, characterized in that the water level of the position where the second over-floor pipe is installed is the water level that the user uses the most. In the washing machine provided with the 1st, 2nd overflow pipe, Overflowing through the first overflow pipe when the water level is set higher than the second overflow pipe; And overflowing through the second overflow pipe when the water level is set at or below the second overflow pipe. In the washing machine provided with the 1st, 2nd overflow pipe, Carrying out a washing operation at a predetermined level; And overflowing through the first and second overflow pipes after the washing operation is completed. The method of claim 4, wherein And a predetermined water level in the washing administration progress step is less than the first or second overflow water level. The method of claim 4, wherein The overflowing step includes detecting a water level after completion of the washing stroke, and supplying and overflowing the water to the first or second overflow water level according to the detected water level. Control method. The method of claim 4, wherein The overflow control method of the washing machine, characterized in that is performed even after the completion of the rinsing stroke.