KR19990015991U - Water Circulation Device for Drum Washing Machine - Google Patents

Abstract

The present invention is to provide a water washing device of the drum washing machine to circulate the washing water stored in the drum by the pumping force of the drain pump to improve the washing force.

The present invention is provided with a drain pump 14 for forcibly discharging the washing water in the drum (6) rotating in the tub (5), and a drain pipe (17) connecting the drain pump (14) in one line. In the drum washing machine, a switching valve (19) installed on the drain pipe (17) connected to the discharge side of the drain pump (14) and for switching the washing water discharged by the operation of the drain pump (14) to be circulated and discharged; A circulation hose 18 connecting one side of the switching valve 19 to the detergent container 2 so that the washing water passing through the drain pump 14 circulates into the drum 6 when the washing stroke is changed according to the switching of the switching valve 19. ) And a drain hose 13 connected to the other side of the switching valve 19 so as to discharge the wash water to the outside during the drainage stroke.

Description

Water Circulation Device for Drum Washing Machine

The present invention relates to a drum washing machine, and more particularly, to a water circulating device of a drum washing machine to circulate the washing water stored in the drum by the pumping force of the drain pump to improve the washing force.

In general, a washing machine is classified into a filler method for washing laundry by rotating water flow, and a drum washing method for washing laundry using a drop of laundry.

As shown in FIG. 1, a conventional drum washing machine using the above-described laundry drop is provided with a detergent container 2 and an operation unit 3 on the front upper part of the washing machine main body 1. The rear side of the water supply valve (4) is connected to the water supply means not shown to supply hot water and cold water.

A tub 5 is provided in the washing machine main body 1, and a drum 6 is provided in the tub 5 so as to rotate at a high speed to wash and dehydrate.

The front of the tub (5) is provided with a door (8) via the diaphragm (7) to open and close the opening of the drum (6) when the laundry cloth is put into the drum (6), the diaphragm (7) An air vent 9 is installed at the upper end of the laundry cloth to introduce dry air, and the front surface of the tub 5 receives vibrations generated by high-speed rotation of the drum 6 during washing and dehydration. The counterweight 10 is provided so that it may be suppressed.

The outer peripheral surface of the tub (5) is connected to the condensing hose (11) for supplying cold water to condense the hot air introduced into the tub (5), the lower side of the tub (5) forward and reverse rotation of the drum (6) The power transmission means 12 is installed to make.

A drain pump 14 is installed in the middle of the drain hose 13 so as to forcibly drain the wash water drained from the tub 5 through the drain hose 13 to the outside in the washing machine main body 1. The tub 5 and the drain pump 14 are disposed at the lower front side of the washing machine main body 1 to prevent the drain pump 14 from being blocked by the laundry dregs contained in the wash water drained from the tub 5. The filter 15 is provided in the middle of the said drain pipe 17 which connects with ().

The drum 6 has a plurality of through-holes 6a formed therein so that the washing water supplied into the tub 5 flows into the drum 6, and the drum 6 is formed on the inner circumferential surface thereof. To rotate the laundry cloth to a certain height when it is rotated and at the same time turbulent flow of the water flow a plurality of stirring projections (6b) protruding toward the inner center of the drum (6) at a predetermined interval from each other, A groove (not shown) protrudes outward of the drum 6 so that water in the drum 6 accumulates in a portion facing the plurality of stirring protrusions 6b.

The conventional laundry washing machine configured as described above is automatically washed and rinsed due to the fall caused by the rotation of the drum 6. At this time, the washing machine rinses in a groove (not shown) protruding to the outside of the drum 6. The water falls from the upper part to the lower part by rotation to form a vortex in the wash water, but the washing is performed, but the water accumulated in the groove does not fall in all, and some flows down the side wall of the drum 6 during the washing process. As the washing performance is lowered, washing water and rinsing water are not circulated, and when washing, the detergent is not completely dissolved and is precipitated, thereby lowering the bathing ratio and causing washing performance to be unbalanced or causing unbalanced washing.

In order to compensate for the above problems, the waste water stored in the drum 6 is circulated by the pumping force of the pump to improve washing and rinsing performance, as shown in FIG. A separate circulation pump 16 for circulating the washing water is installed between the parts 15, and the washing water is circulated to the upper portion of the tub in the circulation pump 16 to wash the water into the drum 6. The circulation hose 18 which can be supplied is connected.

Therefore, the washing water stored in the drum 6 during washing and rinsing is discharged through the drain pipe 17 by the operation of the circulation pump 16 to circulate to the upper end of the drum 6 along the circulation hose 16.

Of course, during the discharge of the washing water and rinsing water is discharged to the outside through the drain hose 13 by the operation of the drain pump (14).

However, circulating the wash water by using the circulation pump 16 requires the installation of a separate circulation pump 16 in addition to the drainage pump 14, resulting in a cost increase, and thus a separate installation in manufacturing. Difficulty in securing the space and the work efficiency was poor.

The present invention is made to solve the above problems, the purpose of the present invention by using a separate switching valve and the existing water pump and the tub and wash water and rinsing water drained to the bottom of the drum and tub outside The purpose of the present invention is to provide a drum washing machine that can improve the solubility of the detergent and improve the washing performance while circulating the inside of the drum through the upper detergent container.

Water washing device of the drum washing machine according to the present invention made to achieve the above object, the drain pump for forcibly discharging the washing water in the drum rotating in the tub, and a drain pipe for connecting the drain pump in one line In the drum washing machine, a switching valve is installed on the drain pipe connected to the discharge side of the drain pump and switches the washing water discharged by the operation of the drain pump to be circulated and discharged; It characterized in that it comprises a circulating hose connecting the one side of the switching valve and the detergent container so that the wash water passing through the drain pump circulates into the drum, and a drain hose connected to the other side of the switching valve so as to discharge the washing water to the outside when the drainage stroke.

1 is a perspective view showing a conventional drum washing machine,

Figure 2 is a schematic longitudinal cross-sectional view showing a water circulation device of a drum washing machine by a conventional circulation pump,

Figure 3 is a schematic longitudinal cross-sectional view showing a water circulation device of the drum washing machine according to the present invention.

* Explanation of symbols for main parts of the drawings

1 body 2 detergent box

5: Tub 6: Drum

13: drain hose 14; Drain pump

16: circulation pump 17: drain pipe

18: circulation hose 19: switching valve

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

Figure 3 is a schematic longitudinal cross-sectional view showing a water circulation device of the drum washing machine according to the present invention.

In the drawings, the same components as those in the related art are denoted by the same names and the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 3, the drum washing machine is provided with a drain pump 14 for forcibly draining the washing water in the drum 6 which rotates in the tub 5 to the outside during washing, rinsing, and dehydration administration. A filter 15 is installed to filter the laundry debris contained in the wash water, and a drain pipe 17 is connected to the tub 5, the filter 15, and the drain pump 14 by one line.

In addition, a front side of the main body (1) is provided with a detergent container (2), the detergent container (2) is connected to a water supply means (not shown) is connected to the water supply valve (4) to supply hot water and cold water and the detergent container ( In 2), a water supply hose 4a for supplying washing water to the drum 6 is connected.

In addition, the drainage pump 14 may be circulated to the upper portion of the tub 5 by the pumping force of the drainage pump 14 in the lower portion of the drum 6 so as to circulate the inside of the drum 6. It is provided on the drain pipe (17) connected to the discharge side of the) and provided with a switching valve 19 for switching the washing water discharged by the operation of the drain pump 14 to circulate and discharge, the switching valve (19) In accordance with the change of the washing stroke is passed through the drain pump (14) is provided with a circulation hose (18) connecting the one side of the switching valve 19 and the detergent container (2) to circulate into the drum (6), A drain hose 13 connected to the other side of the switching valve 19 is provided to discharge the wash water to the outside during the drainage stroke.

Next, the operation and effects of the present invention configured as described above will be described in detail.

The drum 6 is rotated in the tub 5 during the washing operation, while the laundry in the drum 6 is pulled up and dropped at the same time, and washing is performed by the free fall. During operation, the washing water stored at the lower end of the tub 5 is discharged through the drain pipe 17.

The wash water discharged in this way is washed water stored in the drum 6 and the tub 5 through the drain pipe 17 connecting the tub 5 and the filter 15 according to the pumping pressure applied to the drain pump 14. 15), the filter 15 is to filter the laundry residue contained in the wash water.

In addition, the washing water from which the laundry residue is removed passes through the drain pump 14 through a drain pipe 17 connecting the filter 15 and the drain pump 14, and washes the wash water passing through the drain pump 14. The water passes through the selector valve 19.

At this time, according to the changeover of the switching valve 19 installed in the drain pipe 17, the outlet of the switching valve 19 on the drain hose 13 side is closed, and the circulation hose 18 side connected to the detergent container 2 is opened. Thus, the washing water is purified to the upper part of the drum 6 through the circulation hose 18, and washing is performed.

Of course, at the time of the rinsing stroke, the switching valve 19 is switched to the same process as above to circulate the rinsing water.

When the drainage pump 14 is operated for the dehydration stroke after the washing stroke and the rinsing stroke, the tub 5 and the filter 15 are connected according to the pumping pressure applied to the drainage pump 14 as in the washing stroke. Washing water stored in the drum 6 and the tub 5 through the drain pipe 17 is passed through the filter 15, the filter 15 is to filter the laundry residue contained in the wash water.

Then, the washing water from which the laundry residue is removed passes through the drain pump 14 through the drain pipe 17 connecting the filter 15 and the drain pump 14, and the wash water passing through the drain pump 14. Is drained to the outside through the drain hose 13 by switching of the switching valve (19).

As such, the present invention does not use the conventional circulation pump 16, but by circulating the wash water through the switch valve 19 for switching the flow of the wash water to the existing drain pump 14, the circulation pump 16 Cost increase due to use can be reduced, and work efficiency is improved when installing the circulation pump 16 even in manufacturing.

In addition, as the washing water is circulated, the washing performance can be improved, and the washing water is circulated through the detergent bottle to wash away the detergent that may remain in the detergent bottle, thereby improving the solubility of the detergent. Can achieve

As described above, according to the water circulating device of the drum washing machine according to the present invention, water is circulated through the upper detergent container of the tub by the pumping force of the drainage pump of the lower washing water in the tub and sprayed into the drum. By providing a switch valve and a circulation hose so that the wash water collected in the lower part of the tub can be circulated to the inside of the drum through the switch valve to the upper portion to increase the solubility of the detergent and improve the washing performance. It can be effective.

Claims (1)

In the drum washing machine provided with a drain pump for forcibly discharging the washing water in the drum rotating in the tub, and a drain pipe connecting the drain pump in one line, A switching valve installed on the drain pipe connected to the discharge side of the drain pump and for switching the washing water discharged by the operation of the drain pump to circulate and discharge; In response to the changeover of the switching valve, the washing hose passing through the drain pump during the washing stroke circulates into the drum, and a circulation hose connecting one side of the switching valve and the detergent container, and the other side of the switching valve to discharge the washing water to the outside during the draining stroke. A water washing device of a drum washing machine comprising a connected drain hose.