KR101248745B1 - Drum type washing machine - Google Patents

Abstract

The present invention relates to a drum washing machine having a drainage device.

In the drum washing machine according to the present invention, the drum washing machine includes a cabinet forming an external appearance, a water tank installed in the cabinet for washing water, and a drainage device for draining the washing water of the water tank. And a drainage flow passage member connected to the drainage pump to prevent natural drainage, and a natural drainage hose connected to one end of the drainage flow passage member and inclined downward to reduce the amount of residual water remaining in the drainage device. There is.

Description

Drum Washing Machine {DRUM TYPE WASHING MACHINE}

1 is a perspective view showing a general view of a drum washing machine according to the prior art.

Figure 2 is a perspective view showing a rough internal structure of the drum washing machine according to an embodiment of the present invention.

Figure 3 is a perspective view of the drainage included in the drum washing machine according to an embodiment of the present invention.

4 is a cross-sectional view showing the drain flow of the drain pump included in FIG.

FIG. 5 is a cross-sectional view of the drain channel member included in the drain apparatus of FIG. 3.

6 is a perspective view showing an internal structure of a drum washing machine according to another embodiment of the present invention.

FIG. 7 is a perspective view illustrating a drain passage member included in FIG. 6.

8 is a perspective view showing a rough internal structure of a drum washing machine according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: cabinet 11: mainframe

12: front frame 20: tank

70: drainage 71, 72: 1st, 2nd connection hose

73: natural drain hose 74: support

80: drain pump 84: drain filter

90: drainage passage member 91: inflow passage

92: outflow passage 93: bending section

94: air passage 95: air hole.

The present invention relates to a drum washing machine, and more particularly to a drum washing machine that can minimize the amount of wash water remaining in the drainage device.

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.

Among these general washing machines, a drum washing machine includes a cabinet 1 forming an exterior as illustrated in FIG. 1, a cylindrical water tank 2 installed inside the cabinet 1 and containing wash water, and a water tank 2. It is provided with a rotating tub (3) rotatably installed in the interior of the laundry is put into the rotating tub (3) to rotate the rotating tub (3) so that washing can be made.

In addition, the drum washing machine is provided with a water supply device (4) for supplying the wash water to the water tank (2) and a drainage device (5) for discharging the wash water to the outside after washing, the drainage device (5) Natural drain hose (5a) for guiding the water from the water tank (2) to be discharged to the outside, and disposed under the water tank (2) to generate a pumping force so that the wash water is discharged to the outside along the natural drain hose (5a) It includes a drain pump (5b). In this case, the drain pump 5b of the conventional drum washing machine is detachably provided with a drain filter 5c so that the drain pump 5b is provided on the front lower side of the drum washing machine so that the user can easily remove foreign substances caught in the drain filter 5c. Is provided in, the natural drain hose (5a) is connected to the drain pump (5b) is provided extending to the drain port (1a) side of the upper upper portion for space utilization or interior.

In the conventional drum washing machine, since the natural drain hose 5a connected to the drain pump 5b is provided long upward from the lower side of the drum washing machine to the upper side of the rear washing machine, when the drainage is terminated and the operation of the drain pump 5b is stopped, the water tank Air is introduced into the natural drainage hose (5a) through the drainage pump (5b) with the washing water of the siphon phenomenon is stopped. Therefore, a considerable amount of wash water remains between the drain pump 5b and the natural drain hose 5a. Thus, the residual water remaining between the drain pump 5b and the natural drain hose 5a is frozen when the temperature is low in winter. Operation of the drain pump 5b is hindered, which causes a problem that causes the failure of the drain pump 5b.

The present invention is to solve this problem, it is an object of the present invention to provide a drum washing machine having a structure that can reduce the amount of wash water remaining in the drainage device.

Drum washing machine according to the present invention for achieving the object, in the drum washing machine comprising a cabinet forming an appearance, a water tank installed in the cabinet is fresh water, and a drainage device for draining the wash water of the tank The drainage device includes a drainage pump, a drainage flow passage member connected to the drainage pump to prevent natural drainage, and a natural drainage hose provided inside the cabinet and connected to the drainage flow passage member to naturally drain the wash water. Characterized in that.

In addition, a flow path having a bending part is provided inside the drain flow path member, and the upper end of the bending part is provided at a predetermined height higher than the full water level of the wash water in the water tank, and the lower end of one side is connected to the drain pump side and the lower end of the other side is It is connected to the natural drain hose side.

In addition, the drain passage member includes an inflow passage formed between the drain pump and the bending portion, and an outlet passage between the bending portion and the natural drain hose.

In addition, the drain passage member is integrally formed with an air passage communicating with the outflow passage, and an air hole is formed at one end of the air passage so that outside air can be introduced.

In addition, the drain passage member is fixed to the inside of the front or side of the cabinet.

In addition, the drain passage member is fixed to the side of the tank.

In addition, a drainage hole is formed below the cabinet, and an end of the natural drainage hose is supported by the drainage hole.

The length of the drain pump and the bending part may be shorter than the length of the bending part and the end of the natural drain hose.

In addition, the drainage device is characterized in that it comprises a support for preventing the sag of the natural drain hose.

In addition, the present invention is a cabinet forming an appearance, a water tank provided in the interior of the cabinet to wash the fresh water, a drain pump for draining the wash water of the tank, the drain pump is connected to the inside and the flow path is formed It characterized in that it comprises a drainage flow path member for preventing the natural drainage of the wash water in the tank, and a natural drainage hose provided in the cabinet and connected to the drainage flow path member to be inclined downward.

In addition, one side of the flow path is characterized in that it is provided higher than the full water level of the tank.

In addition, the drain passage member is formed with an air passage communicating with the passage, one end of the air passage is formed higher than the upper end of the passage and the air hole is formed so that the outside air can be introduced.

In addition, the drain pump is installed on the front of the cabinet, and further comprises a drain filter for filtering foreign matter in the wash water.

In addition, the drain passage member is fixed to the rear of the front panel or the side of the tank.

In addition, a drainage hole is formed below the cabinet, and an end of the natural drainage hose protrudes out of the cabinet through the drainage hole.

In addition, the length of the upper end of the flow path and the end of the natural drain hose is longer than the length between the upper end of the flow path and the drain pump.

In addition, the drum washing machine, characterized in that the support is provided for preventing the sag of the natural drain hose.

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

Figure 2 is a perspective view showing the internal structure of the drum washing machine according to an embodiment of the present invention, Figure 3 is a perspective view of the drainage included in the drum washing machine according to an embodiment of the present invention, Figure 4 is Figure 3 5 is a cross-sectional view illustrating a drain flow of the drain pump included in the pump, and FIG. 5 is a cross-sectional view of the drain channel member included in the drain apparatus of FIG. 4.

Drum washing machine according to an embodiment of the present invention, as shown in Figures 2 and 3, the drum 10 for forming the appearance, and the drum-type water tank installed in the cabinet 10 for the fresh water of the wash water ( 20, a rotating tank 30 rotatably installed in the water tank 20, and a driving motor installed in the lower portion of the water tank 20 to rotate the rotating water tank 30 inside the water tank 20 ( 40). In addition, the washing machine is provided with a detergent supply device 50 for supplying detergent into the water tank 20, and a water supply device 60 for supplying the washing water in which the detergent is dissolved in the water tank 20 is installed above the water tank 20. It includes), is installed in the lower portion of the water tank 20 includes a drainage device 70 for forcibly discharging the wash water of the water tank 20 to the outside.

The cabinet 10 covers a main frame 11 having a space formed therein, the front and top portions of which are opened, a front frame 12 provided at the front of the main frame 11, and an upper portion of the main frame 11. It comprises a top frame 13 and a lower frame 14 forming the bottom surface of the main frame 11.

The front frame 12 is opened in correspondence with the opening of the water tank 20 and the water tank 30 so that the laundry can be put into or taken out of the inside of the water tank 30, the front frame 12 and the water tank 20 and A door 12a for opening and closing the opening of the rotating tub 30 is provided. In addition, the lower portion of the front frame 12 is provided with a filter door 12b for entering the drain filter 84 to be described later.

In addition, the front end portion 14a of the lower end of the lower frame 14 is vertically bent upwardly, and the drain filter 84 is introduced through the front portion 14a.

A plurality of dehydration holes 31 are formed on the inner circumferential surface of the rotary tub 30, and a plurality of lifters 32 for lifting the laundry from the lower portion of the rotary tub 30 to the top are arranged at regular intervals.

The detergent supply device 50 includes a detergent case 51 installed at the front side of the cabinet 10 and a detergent container 52 mounted in a drawer form to enter the detergent case 51 from the front of the cabinet 10. Include. This allows the user to draw detergent into the detergent container 52 after withdrawing the detergent container 52 to the front.

The water supply device 60 includes first water supply pipes 62 connecting the external water supply pipe 61 and the back of the detergent case 51, and a second water supply pipe 63 connecting the detergent case 51 and the water tank 20. And water supply valves 64 installed at an inlet side of the first water supply pipe 62 for water supply control.

This is because the water supplied when the water supply is made by opening the water supply valve 64 is supplied to the water tank 20 via the detergent supply device 50, so that the detergent supplied to the detergent supply device 50 is supplied with the water tank. It is to be supplied to (20).

Therefore, when the drum washing machine is operated after the door 12a is opened and the laundry is put into the rotary tub 30, the washing water mixed with the detergent is supplied to the water tank 20 through the water supply device 60 and the detergent supply device 50. The laundry is lifted by the rotation of the rotary tub 30 and lifted upward along the lifter 32 so as to fall downward.

Drainage device 70 is provided in the inner lower portion of the cabinet 10 of the drum washing machine according to the present invention, the drainage device 70 is to force the wash water contained in the water tank 20 as shown in Figs. Drainage pump 80 for draining to the outside, and is connected to the drainage pump 80 to prevent the natural wash water stored in the water tank 20 is provided to minimize the amount of work during the pumping operation of the drainage pump (80) It comprises a drainage flow path member 90, and a natural drainage hose 73 is connected to the drainage flow path member 90 is provided to discharge the wash water to the outside of the cabinet (10).

The drainage pump 80 forms an exterior and is provided with a drain casing 81 in which a space for washing water flows therein, and is provided inside the drain casing 81 to forcibly drain the wash water from the water tank 20 to the outside. Impeller 82 is rotatably installed to provide a, a pump motor 83 provided on the rear side of the impeller 82 to provide a driving force to the impeller 82, and is provided detachably to the drain casing 81 drain casing ( It comprises a drain filter 84 for filtering foreign matter contained in the wash water flowing into the 81.

The drain casing 81 is integrally formed with the filter case 85 forming the filter chamber 85a and the pump case 86 forming the pump chamber 86a. The filter chamber 85a and the pump chamber 86a It is made up of spaces that are mutually divided.

At this time, the filter chamber (85a) is hollow is provided so that the drain filter 84 can be inserted, withdrawable, the pump chamber (86a) is provided with an impeller (82) for forcibly flowing the wash water.

In addition, an inlet tube 87 having an inlet 87a is provided at one side of the filter case unit 85 so that the washing water may be introduced into the filter chamber 85a, and the filter case unit corresponding to the inlet 87a ( On the other side of the 85, the outlet hole 88 is formed so that the washing water filtered by the foreign matter by the drain filter 84 provided in the filter chamber (85a) to the pump chamber (86a). In addition, an upper portion of the pump case 86 is provided with a discharge tube 89 having a discharge port 89a formed therein to discharge the washing water introduced into the pump chamber 86a through the outlet hole 88 to the outside by the impeller 82. do.

At this time, the inlet pipe (87) is provided with a first connection hose 71 for connecting between the water tank 20 and the drain pump (80), the discharge pipe (89) to the wash water in the drain pump (80) drainage flow path member A second connecting hose 72 is provided for flowing out to the side 90.

The pump case part 86 which forms the pump chamber 86a is open to the side in which the pump motor 83 is mounted, and this opening is closed by attachment of the pump motor 83.

The drain flow path member 90 is connected to the drain pump 80 by the second connection hose 72. The drain flow path member 90 has washing water from the drain pump 80 therein as shown in FIG. Between the inflow passage 91, the outflow passage 92 for guiding the washing water introduced into the drainage passage member 90 to the natural drain hose 73, between the inflow passage 91 and the outflow passage 92 Preferably, a bending portion 93 bent in an inverted U shape is formed. At this time, the inflow passage 91 of the drain passage member 90 is provided upward to allow the washing water to flow upward when the drainage pump 80 is operated, and the length of the inflow passage 91 is the second connection hose 72. In order to minimize the length of the inflow passage (91) and formed to be higher than or equal to the full water level of the wash water in the water tank 20, the outflow passage 92 at the upper end of the inflow passage (91) is directed downward To bend.

In addition, an air passage 94 is formed on the side of the outlet passage 92 so that outside air can flow in and out. One end of the air passage 94 communicates with the outlet passage 92 and the other end is positioned at a position higher than the bending portion 93. The air hole 95 is formed so that the outside air can be introduced while the wash water does not flow out. The air flow path 94 is to prevent the drainage state of the wash water of the water tank 20 is maintained by the siphon phenomenon when the user terminates the drainage before the completion of the drainage operation of the drum washing machine, the user may drain Since the operation of the impeller 82 is stopped and the outside air flows into the outflow channel 92 through the air hole 95 by the pressure difference between the outflow channel 92 and the outside air, thereby preventing the siphon phenomenon from continuing. Drainage will stop.

In addition, the drainage passage member 90 is provided with a plastic injection molding integrally with a sieve having passages 91, 92, and 94 formed therein.

The drain passage member 90 is attached to the rear of the front frame 12, that is, the front inner side of the front of the cabinet 10 by using a screw (not shown) or a hook (not shown). Alternatively, it may be installed inside the side of the cabinet 10. At this time, as described above, the bending part 93 of the drainage passage member 90 is fixed to be higher than the full water level of the wash water in the water tank 20. Preferably, a drum washing machine saves the use of the wash water. The water level of the wash water that is fresh in the water tank 20 in such a way that it corresponds to approximately 1/3 of the height of the water tank 20. Therefore, when the height of the bending portion 93 is lower than the center height of the water tank 20 and the drainage flow path member 90 is fixed at a predetermined height higher than the maximum water level of the washing water, the height of the washing water of the water tank 20 is increased. Since the height of the bending portion 93 is higher, the amount of the drainage pump 80 can be reduced by minimizing the height of the bending portion 93 while preventing the wash water desalted in the water tank 20 from being naturally drained.

In addition, the drain flow path member 90 is connected to the natural drain hose 73, one end of the natural drain hose 73 is connected to the flow path, the other end of the lower side of the rear of the main frame 11 of the cabinet 10 It is supported by the drainage hole (11a) formed in the protruding out of the cabinet 10 through the drainage hole (11a). At this time, since the natural drain hose 73 is connected to the drain flow path member 90 provided on the front side of the cabinet 10 and provided to the rear side, the natural drain hose 73 may be sagging downward. Therefore, in order to prevent this, the drainage device 70 further includes a support 74 for preventing sagging of the natural drainage hose 73. The support portion 74 is provided on the inner surface of the lower frame 14 upward and in the form of a height lowering toward the rear side so that the natural drain hose 73 can maintain a downwardly inclined state.

In addition, since the flow path length between the drain pump 80 and the bending part 93 is shorter than the flow path length between the bending part 93 and the other end of the natural drain hose 73, the bending part 93 and the natural drain hose. Washing water between (73) is able to reduce the amount of residual water remaining on the natural drainage drainage pump 80 side.

The wash water flowing into the filter chamber 85a from the water tank 20 by the configuration of the drainage device 70 passes through the drain filter 84 inside the filter chamber 85a, and afterwards, the foreign matter is filtered and flows toward the pump chamber 86a. The impeller 82 rotated by the pump motor 83 discharges the washing water in the pump chamber 86a toward the discharge tube 89 of the pump chamber 86a to drain the washing water of the water tank 20 to the outside. Will be.

Therefore, the wash water discharged from the drain pump 80 flows into the drain flow path member 90 through the second connection hose 72, and the wash water introduced into the drain flow path member 90 passes through the natural drain hose 73. Will be discharged to the outside. At this time, because the height of the bending portion 93 of the drain flow path member 90 is lower than the center height of the water tank 20 and is provided to be higher than the maximum water level of the wash water stored in the water tank 20, the drain pump ( 80) work will be reduced. In addition, since the natural drain hose 73 is inclined downward in the cabinet 10 to protrude to the outside, the wash water passing through the bending part 93 is discharged to the outside by the natural drainage due to the height difference. 73) no balance remains.

In addition, although not shown in the embodiment of the present invention, a residual water hole (not shown) may be further formed in the lower portion of the pump case 86 to discharge some residual water remaining in the drain pump 80 to the outside. .

Next, a drum washing machine according to another embodiment of the present invention will be described.

The same configuration as the embodiment of the present invention is given the same reference numerals, and description thereof will be omitted.

FIG. 6 is a perspective view illustrating an internal structure of a drum washing machine according to another embodiment of the present invention, and FIG. 7 is a perspective view illustrating a drain passage member included in FIG. 6.

As shown in FIGS. 6 and 7, the drum washing machine according to another embodiment of the present invention, the drainage passage member 100 is provided on the front side of the water tank (20).

The drain flow path member 100 is connected to the drain pump 80 by the second connection hose 72, the drain flow path member 100 and the inflow flow path 101 through which the wash water flows from the drain pump 80 therein; , Bending between the inflow flow path 102 and the inflow flow path 101 and the outflow flow path 102 to guide the washing water introduced into the drain flow path member 100 toward the natural drain hose 73, preferably in an inverted U-shape. Bent part 103 is formed. At this time, the inflow passage 101 of the drain passage member 100 is provided upward to allow the washing water to flow upward when the drainage pump 80 is operated, and the length of the inflow passage 101 is the second connection hose 72. In order to minimize the length of the inflow passage 101 and formed to be equal to or higher than the maximum water level of the wash water in the water tank 20, the outflow passage 102 at the upper end of the inflow passage 101 Bent to face.

In addition, an air flow path 104 is formed on the outlet flow path 102 so that outside air can flow in and out. The air hole 105 is formed so that the outside air can be introduced while the wash water does not flow out.

The drainage passage member 100 included in the drum washing machine according to another embodiment of the present invention has a bending portion 103 lower than the center height of the water tank 20 and the fresh water in the water tank 20 as in the embodiment of the present invention. Positioned to be formed at a position higher than the maximum height of the wash water is fixed to the outer peripheral portion of the water tank 20 using a screw (not shown) or a hook (not shown).

At this time, since the natural drain hose 73 is inclined downward in the cabinet 10 and protrudes to the outside, the wash water passing through the bending part 103 is discharged to the outside by the natural drainage due to the height difference. There is no remaining at 73.

Next, a drum washing machine according to another embodiment of the present invention will be described. The same configuration as the embodiment of the present invention is given the same reference numerals, and description thereof will be omitted.

8 is a perspective view showing a rough internal structure of a drum washing machine according to another embodiment of the present invention.

Drainage passage member 110 included in the drum washing machine according to another embodiment of the present invention is provided in the form of an inverted U-shaped pipe end of the inlet 112 of the drainage passage member 110 of the drain pump 80 Is connected to the discharge pipe 89, the drain flow path member 110 is the inlet 112 through which the wash water flows from the drain pump 80, and the wash water introduced into the drain flow path member 110 natural drain hose (73). The outlet part guiding to the side) and the bending part 113 bent in an inverted U shape are formed between the inlet part 112 and the outlet part 111. In addition, an air pipe 114 is formed on the outlet 111 side to allow the outside air to flow in and out. One end of the air pipe 114 communicates with the outlet 111 and the other end is positioned at a position higher than the bending part 113. The air hole 115 is formed so that the outside air can be introduced while the wash water does not flow out.

Drainage passage member 110 included in another embodiment of the present invention is provided in the form of a pipe fixed directly to the discharge pipe 89, so that no need for a separate fixing device for fixing the drainage passage member 110 in a simple manner This becomes possible.

At this time, as in the embodiment of the present invention, the bent portion 113 is disposed at an appropriate length such that the drainage passage member 100 is positioned between the central height of the water tank 20 and the maximum height of the fresh water washed in the water tank 20. Prepare.

As described in detail above, the drum washing machine according to the present invention has a drainage flow path member on the front side of the cabinet and is provided with an inclined downward natural drainage hose to remove the residual water of the natural drainage hose, thereby remaining in the drainage device. There is an effect to reduce.

Claims (18)

In the drum washing machine comprising a cabinet forming an appearance, a water tank installed in the cabinet to receive fresh water, and a drainage device for draining the wash water from the water tank. The drainage device is connected to the drainage pump, the drainage pump and the drain flow passage member for preventing natural drainage; Is provided in the cabinet and is connected to the drain flow path member includes a natural drainage hose for natural draining the wash water, The drainage passage member is provided with a predetermined height higher than the full water level of the wash water in the water tank, one side lower end is connected to the drain pump side, the other lower end further comprises a bending portion connected to the natural drain hose side, One end of the drain passage member communicates with the drain passage member, and the other end includes an air passage having an air hole. The air hole is formed in a position higher than the bending portion drum washing machine, characterized in that open from the outside to allow the inflow of air. The method of claim 1, The drum washing machine, characterized in that the inside of the drain passage member comprises a flow path formed with the bending portion. 3. The drum washing machine according to claim 2, wherein the drain passage member includes an inflow passage formed between the drain pump and the bending portion, and an outlet passage between the bending portion and the natural drain hose. delete The drum washing machine according to claim 1, wherein the drain passage member is fixed to the inside of the front side or the side of the side of the cabinet. The drum washing machine according to claim 1, wherein the drain passage member is fixed to a side surface of the tank. The drum washing machine according to claim 5 or 6, wherein a drainage hole is formed at a lower side of the cabinet, and an end of the natural drainage hose is supported by the drainage hole. The drum washing machine according to claim 7, wherein a length of the drain pump and the bending part is shorter than a length of the bending part and an end of the natural drain hose. The drum washing machine according to claim 8, wherein the drainage device includes a support for preventing the natural drainage hose from sagging. The cabinet forming the exterior, A water tank provided inside the cabinet to wash water; A drain pump for draining the wash water of the tank; A drainage passage member connected to the drainage pump and having a flow path formed therein to prevent natural drainage of the wash water in the tank; A natural drainage hose provided in the cabinet and connected to the drainage flow passage member to be inclined downward; One side of the flow path is provided higher than the full water level of the tank, One end of the drain passage member communicates with the drain passage member, and the other end includes an air passage having an air hole. The air hole is formed in a position higher than the bending portion drum washing machine, characterized in that open from the outside to allow the inflow of air. delete delete The drum washing machine according to claim 10, wherein the drain pump is installed at the front of the cabinet, and further comprises a drain filter for filtering foreign substances from the wash water. The drum washing machine according to claim 13, wherein the drain passage member is fixed to the inside of the front surface of the cabinet. The drum washing machine according to claim 13, wherein the drain passage member is fixed to a side surface of the tank. The drum washing machine according to claim 14 or 15, wherein a drainage hole is formed at a lower side of the cabinet, and an end portion of the natural drainage hose protrudes out of the cabinet through the drainage hole. The drum washing machine according to claim 16, wherein the length of the upper end of the flow path and the end of the natural drain hose is longer than the length between the upper end of the flow path and the drain pump. 18. The drum washing machine according to claim 17, wherein the cabinet is provided with a support for preventing sagging of the natural drain hose.

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