KR20070009010A - Washing machine - Google Patents

Abstract

A washing machine is provided to sufficiently obtain water flowing in a drain filter, and to prevent foreign materials from flowing in an impeller when the foreign materials block a water passage by installing an auxiliary water passage besides an inlet. A washing machine comprises: a water tank containing water; a drain casing(20) connected to the water tank to discharge water; and a drain filter(30) contained in the drain casing. The drain filter is composed of: a filtering plate(33) formed like a circular plate, and mounted with an inlet(33a) at the center; a stopper unit formed like a circular plate, and installed to contain the drain filter in the drain casing; and a connection unit(32) connecting the filtering plate and the stopper unit. A first auxiliary water passage(33b) or a second auxiliary water passage consisting of at least more than one through-hole is mounted on the filtering plate. The first auxiliary water passage is symmetrically installed each other at the side surface of the inlet to penetrate the filtering plate.

Description

Washing Machine

1 is a perspective view showing a washing machine according to an embodiment of the present invention.

2 is a partial perspective view illustrating a drain casing of a washing machine and a drain filter coupled thereto according to an embodiment of the present invention.

3 is a partial perspective view illustrating a drain casing of a washing machine and a drain filter coupled thereto according to a second embodiment of the present invention.

4 is a cross-sectional view taken along line III-III of FIG. 2.

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

1 housing 2 tank

3: rotating tank 4: motor

5: door 6: lifter

9: drain hose 20: drain casing

21: drain pump 22: impeller

23: drive motor 24: filter inlet

30, 50: drainage filter 31, 51: stopper

32: connection part 33: filter plate

33a: inlet 33b: first auxiliary flow path

53b: second auxiliary flow path

The present invention relates to a washing machine, and more particularly, to a washing machine having a drain casing coupled to the drain casing to improve the structure of the drain filter for filtering foreign matter.

In general, a washing machine is a device for washing laundry by rotating a cylindrical rotating tub of laundry and washing water, the type of such washing machine is to arrange the rotating tub horizontally so that the laundry is rotated in the forward and reverse directions with respect to the horizontal axis The drum washing machine which washes the laundry by being raised upward and falling along the inner circumferential surface of the rotating tank, and the rotating tank in which the pulsator is disposed vertically are placed vertically by the water flow generated when the pulsator rotates in the forward and reverse directions. There is a vertical washing machine that washes laundry.

The drum washing machine and the vertical washing machine also include a water tank for accommodating the washing water therein so that the laundry contained in the rotating tank is washed, a drain pump for forcibly discharging the washing water contained in the water tank after the washing is completed, and washing. It is provided with a drain filter installed in front of the drain pump to filter foreign matter contained in the water. The water tank, the drain filter and the drain pump are connected to each other by a drain hose extending out of the washing machine.

When the drain pump is operated during the washing, rinsing, or dehydration process, the waste filter flows along the drain hose to wash hard water such as buttons and pins and light but bulky foreign matter such as sponge or cloth. This is filtered so that it does not enter the drain pump.

The inlet for the washing water of the tank is formed in the filter chamber in which the drain filter is installed in the drain pump, and the drain hole is formed in the outer periphery of the pump chamber so that the washing water on the filter chamber side is discharged to the outside by driving the impeller. In addition, a disk-shaped filter for partitioning the filter chamber and the pump chamber is provided inside the pump body. In the center of the filter, a flow path is formed in the center so that the washing water flowing into the filter chamber flows into the pump chamber by driving the impeller.

However, the drain pump filter of the conventional washing machine has a structure in which the inlet is opened, and foreign substances such as sponge, cloth, hairpin, etc. may be introduced into the pump chamber. Particularly, foreign materials such as a light and bulky sponge and cloth are wound on a rotating impeller due to water pressure, and thus there is a problem that the drain pump does not perform properly, such as damage to the impeller.

If the diameter of the inlet is narrowed to prevent such foreign substances from being sucked in by water pressure, the flow rate decreases and the drain filter acts as a resistance. When the diameter of the inlet is widened, the flow rate is secured, but the foreign matter filtering performance is deteriorated. have.

The present invention is to solve the above problems, an object of the present invention is to improve the structure of the drain filter to ensure a sufficient flow rate while preventing the phenomenon of being sucked into the pump chamber by water pressure when the foreign matter is blocked in the flow path to the drain pump It is to provide a washing machine to prevent the performance of the degradation.

In order to achieve the above object, a washing machine according to an embodiment of the present invention includes a water tank containing washing water, a drain casing connected to the water tank to drain the washing water, and a drain filter accommodated in the drain casing. Has a disk-shaped filter plate having an inlet formed in the center, a disk-shaped stopper for accommodating the drain filter in the drain casing, and a connection part connecting the filter plate and the stopper, wherein the filter plate has at least one through hole. It characterized in that the first sub-channel or the second sub-channel consisting of the selectively formed.

In addition, the first auxiliary flow passage is formed on the side surface of the inlet so as to penetrate through the filter plate, it characterized in that it is provided symmetrically with each other.

In addition, the second auxiliary channel is characterized in that it is formed in a predetermined size on the inlet guide extending from the inner circumference of the inlet of the filter plate by a predetermined length to the stopper side.

In addition, the second auxiliary channel is characterized in that it is provided symmetrically to each other.

In addition, the drain casing is characterized in that the drain pump for forcibly discharging the wash water is installed.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. Here, the present invention can be applied to both a drum washing machine and a vertical axis washing machine, but for the convenience of description, only the drum washing machine will be described.

1 shows an internal structure of a drum washing machine according to the present invention. As shown in the drawing, the drum washing machine according to the present invention comprises a front plate 1a and a back plate, both side plates, a top plate and a bottom plate 1b and a housing 1 for forming an appearance, and the housing ( 1) a drum-shaped water tank (2) horizontally installed inside the tank to allow the wash water to be contained therein, and a drum-shaped rotation rotatably installed in the water tank (2) and having a plurality of dehydration holes formed on the surface thereof. The tank 3 and the motor 4 which rotates the said rotating tank 3, and a washing | cleaning stroke, a rinsing stroke, and a dehydration stroke are made.

The front part of the water tank 2 and the rotating tank 3 is open so that laundry may be put into the inside of the rotating tank 3, or the laundry contained in the rotating tank 3 may be taken out, and the front plate 1a of the housing 1 may be opened. The hinge is coupled to the door (5) for opening and closing the open front of the water tank (2) and the rotating tank (3). In addition, a plurality of lifters 6 are disposed along the longitudinal direction at regular intervals on the inner circumferential surface of the rotary tub 3, and as the rotary tub 3 rotates, the laundry is pulled upward and dropped at a predetermined height to wash the laundry. Be sure to

The upper part of the housing 1 is provided with a water supply hose 7 for receiving the washing water from the outside, and a detergent container 8 for mixing the detergent with the supplied washing water, and the bottom plate of the housing 1. (1b) is provided with a drainage casing 20 for discharging the wash water contained in the water tank 2 to the outside of the housing 1 when the washing stroke, the rinsing stroke, and the dehydration stroke are performed, and the drainage casing 20 is provided. The drain pump 21 and the drain filter 30 are provided.

The drain filter 30 is easily assembled and installed in the drain casing 20, and the water tank 2 and the drain casing 20 are connected to each other by the drain hose 9. The drain hose 9 extends to the outside of the housing 1 to allow the wash water contained in the water tank 2 to be discharged to the outside of the housing 1.

2 is a partial perspective view illustrating a drain casing of a washing machine and a drain filter coupled thereto according to an embodiment of the present invention. The drain casing 20 is formed in a hollow shape with a predetermined volume to provide a space in which the wash water flows. In addition, the drain pump 21 is disposed inside the drain casing 20 to impulse the wash water forcibly (see FIG. 4), and the impeller 22 and the shaft outside the drain casing 20. Combination is made with a drive motor 23 for rotating the impeller (22).

The front surface of the drain casing 20 is opened so that the drain filter 30 is coupled or separated to form a filter inlet 24, and both sides of the rear of the drain casing 20 are respectively washed with the drain casing 20 inside. An inlet tube 25 for introducing water and an outlet tube 26 for discharging the introduced washing water to the outside of the drain casing 20 are disposed.

The inlet pipe 25 is horizontally arranged at the top of the drain casing 20, and the outlet pipe 26 is inclined upward at the middle of the drain casing 20. The impeller 22 of the drain pump 21 is arranged in the lower part of the outlet pipe 26 on the side of the drain casing 20 opposite the inlet pipe 25 (see FIG. 4), so that the drain pump 21 The drive motor 23 is also installed in a position facing the inlet pipe (25).

A drain hose 9 connected to the water tank 2 is inserted into the inlet pipe 25, and a drain hose 9 extending to the outside of the housing 1 is fitted into the outlet pipe 26. When 21 is operated to rotate the impeller 22, the wash water contained in the water tank 2 is forcibly discharged to the outside of the housing 1 (see FIG. 1).

The filter inlet 24 is formed in a substantially cylindrical shape, and a thread 24a is formed on an inner circumferential surface thereof, and the thread 24a is for easily detaching the drain filter but preventing it from being displaced by water pressure.

The drain filter 30 has a cylindrical filter plate 33 having an inlet 33a formed at the center thereof, and a threaded cylinder 24a of the filter inlet 24, and also has a cylindrical shape for supporting the filter plate 33. It comprises a stopper 31 and a connecting portion 32 of a bar shape connecting them. The inner diameter of the filter plate 33 is provided with a guide portion 33c extending by a predetermined length toward the stopper portion 31 side. Both ends of the connecting portion 32 is further coupled to the reinforcing portion (32a) for strength reinforcement.

Through-holes penetrating through the filter plate 33 are formed at both sides of the filter plate 33, which is the first auxiliary channel 33b. The number and size of the through holes may be determined in consideration of the size, flow rate, etc. of the drain filter 30 and the drain casing 20, but the through holes are symmetrically formed in terms of the flow of the wash water.

The stopper 31 is formed with a thread 31a that can be coupled to the thread 24a formed at the filter inlet 24, and it may be preferable that the stopper 31 is formed of an elastic member so that the wash water does not leak. In addition, the front of the stopper 31 is a straight handle (not shown) is formed to be convex so that the drain filter 30 can be easily removable when cleaning.

In addition, the lower end of the drain casing 20 is provided with a coupling protrusion 27 protruding downwardly having a substantially + -shaped cross section. The coupling protrusion 27 is fitted to the support 40 coupled to the bottom plate 1b (see FIG. 1) of the housing 1 to be coupled thereto.

Support 40 is to absorb the vibration and noise generated during the operation of the drain pump 21 and to couple the drain casing 20 to the bottom plate (1b) of the housing (1). The upper surface of the support 40 is provided with an insertion groove 41 corresponding to the shape of the engaging projection 27 so that the engaging projection 27 is fitted and fixed, each corner of the support 40 toward the top from the bottom The formed screw hole 42 is formed, and the drainage casing 20 is installed in the housing 1 by fastening the screws 43 through the bottom plate 1b of the housing 1 to the respective screw holes 42. Be sure to

3 is a partial perspective view illustrating a drain casing of a washing machine and a drain filter coupled thereto according to a second embodiment of the present invention.

The drain casing of the washing machine according to the second embodiment is the same as that of the first embodiment. The drain filter 30 is also similar to the drain filter 30 of the first embodiment but has a different size and position of the second auxiliary flow path 53b.

The second auxiliary flow path 53b includes at least one through-hole penetrating the guide part 53c extending from the inner diameter of the filter plate 53 to the stopper 51. 3 illustrates a second auxiliary flow passage 53b having two through holes, one on each side, but as described above, the size and number may vary depending on design values such as the size and capacity of the drain casing 20. .

4 is a cross-sectional view taken along line III-III of FIG. 2. The wash water drained from the water tank 2 is introduced into the drain casing 20 through the inlet pipe 25 and discharged to the outside through the outlet pipe 26 through the drain filter 30.

In the interior of the drain filter 30, a foreign material having a relatively light and large volume, such as a sponge or cloth, may flow into the impeller 22 through the inlet 33a, in which case the washing water does not flow into the impeller 22. May be activated, or foreign matter may be caught and damaged by the impeller 22, thereby degrading the performance of the drain pump 21. However, if the auxiliary flow path 33b is formed as shown in FIG. 5, since there are other flow paths in addition to the inlet 33a, the washing water flows into the impeller 22 through the auxiliary flow path 33b, and the foreign matters of the inlet 33a. Even if it is located in front of the water pressure is dispersed because it is not sucked into the impeller (22).

This effect is only the difference in the position of the auxiliary flow path (33B, 53b) is basically the same in the case of the second embodiment of the present invention.

As described above in detail, the washing machine according to the present invention has an effect of preventing the deterioration of the performance of the drain pump by ensuring that the flow rate of the washing water flowing inside the drain filter is sufficiently secured while foreign substances such as cloth or sponge are introduced into the impeller. There is.

Claims (5)

A water tank containing wash water, a drain casing connected to the water tank to drain the wash water, and a drain filter accommodated in the drain casing, wherein the drain filter includes a disk-shaped filter plate having an inlet formed in the center and the drain filter. A disc-shaped stopper for accommodating the drainage casing, and a connecting part connecting the filter plate and the stopper part, wherein the filter plate is provided with a first auxiliary passage or a second auxiliary passage formed of at least one through hole. Washing machine characterized in that. The washing machine according to claim 1, wherein the first auxiliary passage is formed on a side surface of the inlet so as to pass through the filter plate and is provided symmetrically with each other. The washing machine according to claim 1, wherein the second auxiliary passage is formed on a suction port guide extending from the inner circumference of the inlet of the filter plate to the stopper side by a predetermined length. The washing machine according to claim 3, wherein the second auxiliary passages are provided symmetrically with each other. The washing machine according to claim 1, wherein a drain pump for forcibly discharging the washing water is installed inside the drain casing.

Images