KR20070113432A - Washing machine having drain casing - Google Patents

Abstract

A washing machine having a drain casing is provided to prevent damage of an impeller caused by freezing by forming a remaining water discharge hole at a drain pump and discharging remaining water from the drain casing. A drain pump of a washing machine comprises a drain casing(30), impellers(40,41), and a drain filter. The drain casing has a filter casing(34) and a housing(31). The housing has a remaining water discharge hole(38). The impellers discharge water by force. The drain filter filters foreign material from water. The water is supplied to the drain casing. The filter casing contains the drain filter. The housing contains the impellers.

Description

Washing Machine having Drain Casing

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

FIG. 2 is a perspective view illustrating a drain casing included in the washing machine of FIG. 1.

3 is a cross-sectional view taken along the line AA ′ of FIG. 2.

4 is a cross-sectional view taken along the line AA ′ of the modification of FIG. 2.

5 is a perspective view illustrating a drain casing included in a washing machine according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view taken along the line BB ′ of FIG. 5.

7 is a perspective view showing a drain casing included in a washing machine according to another embodiment of the present invention.

FIG. 8 is a cross-sectional view taken along the line CC ′ of FIG. 7.

Explanation of symbols on the main parts of the drawings

1: main body, 20: drainage pump,

30: drain casing, 31: drain housing,

32: circulating housing, 34: filter casing,

35: drainage hole, 36: circulation hole,

37: residual water hole, 38: residual water outlet,

40, 41: impeller, 60: drain filter.

The present invention relates to a washing machine, and more particularly, to a washing machine including a drain pump provided for discharging the washing water to the outside or for circulating the washing water in the tank.

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, when the rotating tub rotates in the forward and reverse directions with respect to the horizontal axis The water flow that occurs when the pulsator rotates in the forward and reverse directions by vertically arranging a drum washing machine that washes laundry by falling upward and falling along the inner circumferential surface of the rotating tank and a rotating tank having a pulsator disposed therein vertically. There is a vertical axis washing machine which is a method of washing laundry by.

Such a general washing machine includes a cabinet forming an exterior, a cylindrical water tank installed inside the cabinet and containing a washing water, and a rotating water tank rotatably installed in the water tank. By rotating the washing can be done.

In addition, the washing machine is provided with a water supply device for supplying the wash water to the tank and a drainage device for discharging the wash water to the outside after the washing is finished, the drainage device to guide the water discharged to the outside from the tank A hose and a drain pump disposed below the water tank to generate a pumping force to allow the wash water to be discharged to the outside along the drain hose.

Such a washing machine includes a drain pump for discharging the washing water to the outside, and the drain pump has a drain motor housing formed thereon, so that an impeller is mounted. In particular, when the remaining water in the drain motor housing freezes in winter, the impeller There is a problem that is broken.

In order to prevent such a problem, Korean Laid-Open Model No. 97-62496 discloses a pump for a washing machine that forms a residual water discharge port at the bottom of a water flow forming space and installs a residual water discharge valve outside thereof to discharge the residual water.

However, the remaining water discharge structure of the pump disclosed in the above-mentioned Korean public utility model has a problem that it is difficult to employ a drain filter for filtering foreign substances in the wash water to the drain pump formed integrally with the pump, and also by providing a separate residual water discharge valve. There is a problem that the manufacturing cost increases.

In addition, it does not disclose a structure in which a residual water discharge port is formed in an integrally formed drainage pump for discharging the washing water to the outside or circulating the washing water in the tank back to the tank.

The present invention is to solve such a problem, it is an object of the present invention to provide a washing machine in which a residual water discharge structure is formed in a drain pump equipped with a drain filter.

In addition, another object of the present invention is to provide a washing machine in which a residual water discharge port is formed in a drain pump provided for discharging the washing water to the outside or circulating the washing water in the tank.

In order to achieve the above object, the present invention provides a washing machine including a drain pump for draining wash water, wherein the drain pump includes a drain casing for forming an appearance, an impeller for forcibly discharging the wash water, and the drain water. It includes a drain filter for filtering the foreign matter of the wash water flowing into the casing, the drain casing is provided with a filter casing for accommodating the drain filter, a housing for accommodating the impeller, the housing to remove residual water Characterized in that the residual water outlet is formed.

In addition, the filter casing and the housing are formed to be stepped with each other so that the remainder of the filter casing can flow into the housing.

The impeller may include a drain impeller for draining the wash water and a circulation impeller for circulation of the wash water, and the housing may include a drain housing for accommodating the drain impeller and a container for receiving the circulation impeller. Including a circulation housing, wherein the residual water discharge port is formed in any one of the drain housing and the circulation housing.

In addition, the bottom of the drain housing and the singer circulation housing is formed to be stepped with each other.

In addition, the remaining water discharge port is formed in the lower portion of any one of the lower housing, the lower height of the drain housing and the circulation housing, the remaining water in communication with the filter casing so that the remaining water flows to the residual water outlet side in the other housing Holes are formed.

In addition, the drainage housing and the circulation housing are provided to face the outer peripheral surface of the filter casing.

In addition, the drain pump further includes a residual hose connected to the residual water outlet, and has a stopper at one end of the residual hose.

The present invention provides a washing machine including a water tank filled with wash water, and a drain pump for draining or circulating the wash water into the water tank, wherein the drain pump includes a plurality of impellers and a plurality of impellers. Including a plurality of housings, the plurality of housings are in communication with each other, any one of the plurality of housings is formed with a residual water outlet for discharging the residual water to the outside.

In addition, a remaining hole is formed in the remaining housings of the plurality of housings such that the remaining water flows toward the remaining water outlet.

The plurality of impellers may include a drain impeller for draining the wash water and a circulation impeller for circulation of the wash water, and the plurality of housings may include a drain housing for accommodating the drain impeller and the circulation impeller. It includes a circular housing to accommodate the.

The bottom surface of the drainage housing and the singer circulation housing may be formed to be stepped with each other, and the remaining water outlet may be formed at a lower portion of the lower one of the drainage housing and the circulation housing.

In addition, the drainage housing and the circulation housing are provided to face the outer peripheral surface of the filter casing.

In addition, the present invention is a filter casing equipped with a filter for filtering foreign matter in the wash water, and a drain casing including a housing for accommodating the impeller causing a forced flow of the wash water, wherein the remaining water for draining the remaining water in the housing Characterized in that the outlet is formed.

The impeller may include a drain impeller for draining the wash water and a circulation impeller for circulation of the wash water, and the housing may include a drain housing for accommodating the drain impeller and a container for receiving the circulation impeller. Including a circulation housing, wherein the residual water outlet is formed in any one of the drain housing and the circulation housing, the other housing is formed with a residual hole to communicate with the residual water outlet.

In addition, the bottom surface of any one of the housing in which the residual water outlet is formed is formed to be lower than or equal to the height of the bottom surface of the other housing.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings. Although the present invention can be applied to both a drum washing machine and a vertical axis washing machine, a drum washing machine will be described by way of example for convenience of description.

1 is a perspective view showing an internal configuration of a washing machine according to an embodiment of the present invention, Figure 2 is a perspective view showing a drain casing included in the washing machine of Figure 1, Figure 3 is a AA 'direction of FIG. 4 is a cross-sectional view taken along the line AA ′ of the modification of FIG. 2.

Washing machine according to an embodiment of the present invention, as shown in Figure 1, is formed in a substantially box shape to form the appearance of the washing machine, the inclined inside the main body 1 is to be washed water is contained The drum-shaped water tank 2, the rotating tank 3 rotatably installed in the inside of the water tank 2, and having a plurality of dehydration holes 3a formed thereon, and the rotating tank 3 are rotated and washed. Drive motor 4 for stroke and rinsing stroke and dehydration stroke, water supply device 5 for supplying detergent and water into the water tank 2, and drainage for washing the wash water in the water tank 2 to the outside. Device 10.

The front of the water tank (2) and the rotating tank (3) is open to put the laundry to be washed into the inside of the rotating tank (3) or to take out the laundry after washing in the rotating tank (3), the front of the main body (1) The door 6 for opening and closing the open front of the water tank 2 and the rotating tank 3 is hinged.

On the inner circumferential surface of the rotary tub 3, a plurality of lifters 3b for lifting the laundry from the lower portion of the rotary tub 3 to the top are arranged at regular intervals.

The water supply device 5 is provided on the inner upper portion of the main body 1, a water supply hose 5a for receiving the wash water from an external water supply source, and a detergent container for mixing the detergent with the wash water and sending it to the water tank 2. (5b).

Therefore, when the washing machine is operated after the door 6 is opened and the laundry is put into the rotating tank 3, the washing water mixed with detergent is supplied to the water tank 2 through the water supply device 5, and the washing tank 3 is The laundry is lifted upward along the lifter 3b by the rotation and falls downward so that the laundry is washed.

Drainage device 10 is provided in the inner lower portion of the main body 1 of the washing machine according to the present invention, the drainage device 10 is for draining the wash water contained in the water tank (2) or for circulating back to the water tank (2) It is connected to the drain pump 20, the drain pump 20, drain hoses 21 and 22 for guiding the wash water to the outside of the main body 1, and the drain pump 20 to connect the wash water again. (2) includes a circulation hose 23 for guiding the inside.

2 and 3, the drain pump 20 forms an exterior and includes a drain casing 30 having a space for washing water therein and a drain casing 30 at both sides of the water tank 2. Drain impeller 40 and circulation impeller 41 for forcibly discharging the wash water to the outside or circulating back to the water tank, and the impeller is provided on the rear side of the drain impeller 40 and the circulation impeller 41 Pump motor 50 to provide a driving force to each of the (40, 41), and a drain filter for removing the foreign matter contained in the wash water flowing into the drain casing 30 is provided detachable to the drain casing ( 60).

The drain casing 30 is a front surface of the inlet portion 39 is formed with a screw thread (39a) for fixing the drain filter 60 for entering and exiting the drain filter 60 to filter the foreign matter of the wash water. ) Is formed, and a filter casing 34 for forming a mounting space of the drain filter 60 is formed therein.

In addition, a drain housing 31 is formed at the right side of FIG. 2 of the drain casing 30 so as to accommodate the drainage impeller 40 for draining the wash water, and the wash water is returned to the tank at the left side. The circulation housing 32 is formed to accommodate the circulation impeller 41 for introducing. In this case, the drainage housing 31 and the circulation housing 32 are provided at positions facing each other. In addition, the drainage housing 31 may be formed on the left side of the drawing of the drain casing 30, the circulation housing 32 is formed on the right side. In addition, motor mounting portions 33a and 33b for mounting the pump motor 50 for providing the driving force are formed on the rear side of each housing 31 and 32.

In addition, an inlet pipe 34a is formed on the side of the drain casing 30 so that the washing water can be introduced into the filter casing 34, and the drain casing 34 and the drain housing 31 are drained to enable mutual communication. The hole 35 is formed so that the washing water in which foreign matter is filtered by the drain filter 60 flows out to the drain housing 31 through the drain hole 35. In addition, the circulation casing 36 is formed between the filter casing 34 and the circulation housing 32 so as to communicate with each other, so that the washing water in which the foreign matter is filtered by the drain filter 60 is circulated through the circulation hole 36 ( 32).

In addition, a drain impeller 40 is installed in the drainage housing 31, and a drain pipe 31a is formed in the upper part so that the washing water is discharged to the outside, and a circulation impeller 41 is installed in the circulation housing 32. The circulation pipe 32a is formed to allow the washing water to flow back into the water tank 2.

At this time, a first drain hose 21 for guiding the washing water of the water tank 2 to the drain casing 30 is connected to the inflow pipe 34a, and the wash water is discharged to the drain pipe 31a outside the main body 1. A second drain hose 22 for guiding is connected, and a circulation hose 23 for guiding the wash water back into the water tank 2 is connected to the circulation pipe 32a.

In addition, an upper portion of the filter casing 34 is provided with an air hole 34b in order to prevent the performance of the impellers 40 and 41 from being deteriorated by the air flowing together with the wash water. Therefore, the air inside the filter casing 34 is discharged to the outside through the air hole 34b.

In addition, the drain casing 30 included in the washing machine according to the present invention has a residual hole 37 on the outside of the circulation hole 36 to remove the residual water remaining in the circulation housing 32 after the drain pump 20 is operated. Form. The residual hole 37 serves to discharge the residual water in the circulation housing 32 into the filter casing 34. The wash water flowing into the filter casing 34 through the residual water hole 37 flows into the drain housing 31 through the drain hole 35, and at this time, to discharge the residual water introduced into the drain housing 31 to the outside. Residual water outlet 38 is provided on the lower surface of the drainage housing 31 to form a structure in which the residual water can be naturally discharged to the outside. In this case, as shown in FIG. 4, the bottom portion of the circulation hole 36 is formed at the same height as the bottom surface of the circulation housing 32 without forming a residual hole, and the residual water is filtered through the circulation hole 36. ) Can be spilled.

In addition, the height s1 of the lower surface of the circulation housing 32 is formed to be higher than or equal to the height s2 of the lower surface of the drain housing 31 with respect to the installation surface of the drain casing 30, and the residual hole 37 is formed. It is formed to be higher than or equal to the remaining water discharge port 38 so that the remaining water in the circulation housing 32 flows out of the drain casing 30 naturally.

The remaining hole 37 and the remaining water outlet 38 are formed so that the remaining hole 37 can communicate between the filter casing 34 and the drainage housing 31 by changing its position, and the remaining water outlet 38 is formed. It may be formed on the lower surface of the circulation housing (32). At this time, the lower surface of the circulation housing 32 is formed to be lower than or equal to the lower surface of the drainage housing 31 so that the residual water of the drainage housing 31 passes through the filter casing 34 and the residual water outlet of the lower surface of the circulation housing 32 ( 38) may be naturally discharged to the outside of the drain casing (30). In addition, the remaining water outlet 38 is provided with a residual hose 38a serves to guide the remaining water flowing through the remaining water outlet 38 to the outside. At this time, a stopper 38b is provided at one end of the residual hose 38a to prevent the washing water from naturally draining through the residual hose 38a, and the user can open the stopper 38b to extract the residual water when the washing ends.

The drainage pump 20 provided below the main body 1 of the washing machine operates the circulation impeller 41 in a mode requiring circulation of the washing water during a washing operation. In this case, a water tank (1) is provided through the first drain hose 21. 2) The washing water flowing out from the bottom surface is sucked into the inlet pipe 34a and the foreign matter of the washing water is filtered by the drainage filter 60 provided in the filter casing 34, and then circulated through the circulation hole 36. Is spilled into. At this time, the wash water is guided through the circulation hose 23 by the circulation impeller 41 accommodated in the circulation housing 32 and sprayed into the rotary tank 3 from the upper side of the water tank 2.

As described above, the drainage pump 20 in the washing water circulation mode circulates water accumulated on the bottom of the water tank 2 and sprinkles it into the rotating water tank 3 to rotate, so that the clothes put to wash are evenly soaked in the washing water. .

In addition, in the drainage mode, the drainage impeller 40 is operated so that the wash water flowing out from the bottom of the water tank 2 through the first drain hose 21 is sucked into the inlet pipe 34a and is provided in the filter casing 34. The foreign matter of the wash water is filtered by the 60 and then flows out to the drainage housing 31 through the drainage hole 35. In this case, the wash water is discharged to the outside through the second drain hose 22 by the drain impeller 40 accommodated in the drain housing 31.

When the operation of the drain pump 20 is terminated, the residual water remains in the circulation housing 32 or the drainage housing 31. The lower surface of the drainage housing 31 is relative to the installation surface relative to the lower surface of the circulation housing 32. Since the residual hole 37 is formed at a lower or the same position and communicates with the circulation housing 32 and the filter casing 34, the residual water of the circulation housing 32 is filtered through the residual hole 37. 34, the residual water introduced into the filter casing 34 is discharged to the outside through the residual water discharge port 38 of the drain housing 31. Therefore, the residual water in the circulation housing 32 and the drainage housing 31 may be removed through a single residual water outlet 38 to prevent damage to the impellers 40 and 41 due to freezing of the winter residual water.

Next, a drain casing according to another embodiment of the present invention will be described.

The same reference numerals are assigned to the same configurations as the preferred embodiments of the present invention, and descriptions thereof will be omitted.

5 is a perspective view illustrating a drain casing included in a washing machine according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along the line BB ′ of FIG. 5.

As shown in FIGS. 5 and 6, the drain casing 30 of another embodiment has a circulation housing 32 formed at the rear side of the filter casing 34, and the drain housing 31 is disposed at one side of the filter casing 34. Is formed. At this time, the residual hole 37 for discharging the residual water between the circulation housing 32 and the filter casing 34 is formed to communicate between the filter casing 34 and the circulation housing 32. In addition, the drain housing 31 is formed with a residual water discharge port 38 for discharging the residual water introduced through the filter casing 34 to the outside. Accordingly, the drain casing 30 according to another embodiment of the present invention has only the circulation housing 32 formed on the rear side of the filter casing 34 as compared to the drain casing according to the embodiment of the present invention. It is provided in the same configuration.

Next, a drain casing according to another embodiment of the present invention will be described. The same reference numerals are assigned to the same configurations as the preferred embodiments of the present invention, and descriptions thereof will be omitted.

7 is a perspective view illustrating a drain casing included in a washing machine according to another embodiment of the present invention, and FIG. 8 is a cross-sectional view taken along the line CC ′ of FIG. 7.

7, 8, the drain casing 30 of another embodiment of the drainage housing 31 to accommodate the drain impeller 40 for draining the wash water in the right portion of Figure 7 Is formed, and a motor mounting portion 33a for mounting the pump motor 50 for providing the driving force is formed at the rear side of the drainage housing 31.

In addition, an inlet pipe 34a is formed on the side of the drain casing 30 so that the washing water can be introduced into the filter casing 34, and the drain casing 34 and the drain housing 31 are drained to enable mutual communication. The hole 35 is formed so that the washing water in which foreign matter is filtered by the drain filter 60 flows out to the drain housing 31 through the drain hole 35. In addition, the drainage housing 31 is installed with an impeller 40 for drainage, the drain pipe 31a is formed so that the washing water is discharged to the outside.

At this time, a first drain hose 21 for guiding the washing water of the water tank 2 to the drain casing 30 is connected to the inflow pipe 34a, and the wash water is discharged to the drain pipe 31a outside the main body 1. A second drain hose 22 for guiding is connected, and a circulation hose 23 for guiding the wash water back into the water tank 2 is connected to the circulation pipe 32a.

In addition, the drain housing 31 is formed with a residual water discharge port 38 for discharging the residual water introduced through the filter casing 34 to the outside. Therefore, the drain casing 30 according to another embodiment has been omitted only the configuration for circulating the wash water of the water tank 2 back to the water tank 2 as compared to the drain casing according to an embodiment of the present invention, It is provided in the same configuration as one embodiment of the invention.

As described above in detail, the washing machine according to the present invention has an effect of preventing damage to the impeller due to freezing of residual water remaining in winter by forming a residual water outlet in the drain pump to which the drain filter is mounted to remove the residual water in the drain casing. There is.

In addition, the present invention is the effect that can be simplified by assembling a plurality of housings for receiving the impeller communicate with each other and to form a single residual discharge outlet in any one of the plurality of housings to simplify the structure for the discharge of residual water in the housing There is.

Claims (15)

In the washing machine comprising a drain pump for draining the wash water, The drain pump includes a drain casing forming an external appearance, an impeller for forcibly discharging the wash water, and a drain filter for filtering foreign matter from the wash water flowing into the drain casing. The drain casing includes a filter casing for accommodating the drain filter and a housing for accommodating the impeller, Washing machine, characterized in that the remaining water outlet is formed in the housing for draining the remaining water. The washing machine according to claim 1, wherein the filter casing and the housing are formed to be stepped with each other so that the remaining water of the filter casing can flow into the housing. The method of claim 1, wherein the impeller includes a drainage impeller for draining the wash water and a circulation impeller for circulation of the wash water, the housing is a drain housing for accommodating the drain impeller and the circulation impeller Including a circular housing to accommodate The remaining water outlet is a washing machine, characterized in that formed in any one of the drain housing and the circulation housing. The washing machine according to claim 3, wherein the bottom of the drainage housing and the singer circulation housing are formed stepped with each other. According to claim 3 or 4, wherein the residual water outlet is formed in the lower portion of any one of the lower housing height of the lower housing and the circulation housing, the other housing so that the residual water flows toward the residual water outlet side Washing machine characterized in that the remaining hole is formed in communication with the filter casing. The washing machine according to claim 5, wherein the drainage housing and the circulation housing are provided to face an outer circumferential surface of the filter casing. The washing machine according to claim 5, wherein the drainage pump further includes a residual hose connected to the residual discharge outlet, and a stopper is provided at one end of the residual hose. A washing machine including a water tank filled with washing water and a drain pump for draining or circulating the washing water into the water tank, The drain pump includes a plurality of impellers and a plurality of housings for accommodating the plurality of impellers, The plurality of housings are in communication with each other, any one of the housing of the plurality of housings, characterized in that the remaining water discharge port for discharging the remaining water to the outside. The washing machine according to claim 8, wherein a remaining hole is formed in the remaining housings of the plurality of housings such that the remaining water flows toward the remaining water outlet. The method of claim 9, wherein the plurality of impellers include a drain impeller for draining the wash water and a circulation impeller for the circulation of the wash water, the plurality of housings and the drain housing for accommodating the drain impeller Washing machine comprising a circulation housing for accommodating the circulation impeller. The washing machine according to claim 10, wherein the bottom of the drain housing and the singer circulation housing are formed to be stepped with each other, and the remaining water outlet is formed at a lower portion of the bottom of the drain housing and the circulation housing. . The washing machine according to claim 10 or 11, wherein the drainage housing and the circulation housing are provided to face an outer circumferential surface of the filter casing. A filter casing equipped with a filter for filtering foreign substances in washing water, and a drain casing including a housing for accommodating an impeller causing forced flow of washing water, Washing machine, characterized in that the remaining water outlet is formed in the housing for draining the remaining water. The method of claim 13, wherein the impeller includes a drainage impeller for draining the wash water and a circulation impeller for circulation of the wash water, the housing is a drain housing for accommodating the drain impeller and the circulation impeller Including a circular housing to accommodate The remaining water discharge port is formed in any one of the housing and the circulation housing, the other housing is drainage casing characterized in that the remaining hole is formed in communication with the remaining water outlet. 15. The drain casing according to claim 14, wherein a lower surface of any one of the housings having the residual water outlet formed therein is lower than or equal to a height of the lower surface of the other housing.

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