KR20070059433A - Pump unit of washing machine - Google Patents

Abstract

A pump unit of a drum-type washing machine is provided to circulate and drain washing water by simplifying the structure having one pump and plural valves. A pump unit of a drum-type washing machine comprises a pump casing(60), one pump, and plural valves(80,84). The pump casing is formed with one water supply path and plural water drain paths(64,65). The pump pumps washing water in the pump casing into the plural water drain paths. The valves are installed at the pump casing to individually open/close the plural water drain paths. The pump casing is formed with a partition wall dividing the plural water drain paths. The pump casing has a circulation hose connecting unit(71), a drain hose connecting unit(72), and a draining unit(67). The circulation hose connecting unit is communicated with the inside of the pump casing to be connected with a circulation hose(62). The drain hose connecting unit is connected with a drain hose(61). The draining unit is formed inside to divide the plural water drain paths.

Description

Pump unit of drum washing machine

1 is a schematic cross-sectional view of a drum washing machine according to the prior art,

2 is a partially cutaway perspective view of a drum washing machine according to the prior art,

3 is a perspective view of one embodiment of a pump unit of a drum washing machine according to the present invention;

4 is an exploded perspective view of an embodiment of a pump unit of a drum washing machine according to the present invention;

5 is a longitudinal sectional view of an embodiment of a pump unit of a drum washing machine according to the present invention;

Figure 6 is a cross-sectional view of the main part of one embodiment of a pump unit of a drum washing machine according to the present invention.

<Explanation of symbols on main parts of the drawings>

10: Tub 14: Gasket

16: washing water spray nozzle 20: drum

48: drainage bellows pipe 50: pump unit

60: pump casing 61: drain hose

62: circulation hose 63: water supply passage

64: first drain passage 65: second drain passage

66: bellows pipe connection 67: drain

68: partition wall 69, 70: valve mounting hole

71: circulating hose connection 72: drain hose connection

76: pump 77: impeller

78: motor 79: waterproof cover

80: circulation valve 81: solenoid

82: valve body 84: drain valve

85: solenoid 86: valve body

90: filter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump unit of a drum washing machine, and more particularly, to a pump unit of a drum washing machine capable of controlling the drainage and circulation of washing water with a simple structure having one pump and a plurality of valves.

In general, a drum washing machine is a device that performs a washing stroke to remove contamination from clothes, bedding, etc. contained in the drum by using the action of the washing water contained in the tub, and processes the laundry through rinsing, dehydration, and drying. .

Recently, there is a trend to install a pump unit for circulating the washing water in the tub into the drum or drained out of the washing machine.

The pump unit includes a pump casing connected with a drain bellow connected to a tub, a drain pump coupled to one side of the pump casing, and a drain connected to one side of the pump casing to guide the wash water pumped from the drain pump to the outside of the drum washing machine. It comprises a hose, a circulation pump coupled to the other of the left and right of the pump casing, and a circulation hose for guiding the washing water pumped from the circulation pump into the drum.

Each of the drain pump and the circulation pump includes an impeller positioned inside the pump casing, a motor screwed to the pump casing to rotate the impeller, and a cover surrounding the upper side of the motor for waterproofing the motor.

However, the pump unit of the conventional drum washing machine has a problem that the structure is complicated and the cost is increased because the circulation pump for circulating the wash water and the drain pump for draining the wash water are installed on the left and right sides of the pump casing, respectively. .

The present invention has been made to solve the above problems of the prior art, to provide a pump unit of a drum washing machine capable of circulating and draining the wash water with a simple structure consisting of one pump and a plurality of valves. There is this.

The pump unit of the drum washing machine according to the present invention for solving the above problems is a pump casing formed with one water supply passage and a plurality of drain passages; A pump for pumping the washing water in the pump casing into the plurality of drain passages; And a plurality of valves installed on the pump casing to individually open and close the plurality of drain passages.

In addition, the pump casing is characterized in that the partition wall for partitioning the plurality of drain passages is formed.

In addition, the pump casing is in communication with the inside of the pump casing, the circulation hose connection portion to which the circulation hose is connected and the drain hose connection portion is connected to the drain hose, characterized in that the drain portion formed with a plurality of drainage passages formed therein. It is done.

In addition, the circulation hose connection portion and the drain hose connection portion is characterized in that protruded inclined in the opposite direction to each other.

In addition, the drainage portion is characterized in that a plurality of water supply valve mounting hole through which the water supply valve is formed.

The plurality of valves may be configured to include a drain valve for opening and closing any one of the plurality of drain passages, and a circulation valve for opening and closing another one of the plurality of drain passages.

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

1 is a partially cutaway perspective view of a drum washing machine to which a pump unit of a drum washing machine according to the present invention is applied, and FIG. 2 is a cross-sectional view of a drum washing machine to which a pump unit embodiment of the drum washing machine according to the present invention is applied.

In the drum washing machine shown in FIGS. 1 and 2, as shown in FIGS. 1 and 2, a cabinet 4 is disposed above the base 3, and a cloth entry hole 5a is disposed in front of the cabinet 4. ) Is mounted, the cabinet cover (5) is mounted, the door (9) for opening and closing the gun entrance hole (5a) to the cabinet cover (5) is rotatably mounted, the top plate (6) on the upper surface of the cabinet (4) ) Is arranged, and a control panel 7 input by the user for selecting washing, rinsing, dehydration stroke, etc. of the drum washing machine is disposed on the upper surface of the top plate 6 or on the cabinet cover 4.

On the upper side of the base 3, the tub 10 for holding the wash water is supported by the spring (3a) or damper (4a) to be buffered.

The tub 10 is formed of a cylinder lying on its side, and an opening hole 12 is formed at the rear of the cloth access hole 5a of the cabinet cover 5, and the circumferential front of the opening hole 12 is A gasket 14 having a sealing portion in close contact with the door 9 is mounted.

The gasket 14 is connected to a circulation hose to be described later, and the washing water spray nozzle 16 for spraying the washing water toward the drum 20 to be described later is installed therethrough.

In the inner space of the tub 10, a drum 20 for accommodating the fabric is positioned to be spaced apart from the inner surface of the tub 10.

The drum 20 is composed of a cylinder lying on its side, and an access hole 21 is formed to allow the fabric (m) to enter and exit the front portion, and a plurality of handwork to allow the wash water to flow into the circumference or the rear portion A 22 is formed, and a lifter 23 is mounted on the inner circumferential surface of the circumference to lift and drop the laundry m.

The tub 10 is equipped with a motor 30 that supports and rotates the drum 20.

The motor 30 includes a stator 32 mounted on the rear surface of the tub 10, a rotor 34 rotated in interaction with the stator 32, and the rotor to rotate together with the rotor. It consists of the rotating shaft 36 built in 32. As shown in FIG.

The tub 10 is connected to a water supply device for supplying the washing water to the inside of the tub 10, the water supply device is connected to the external hose 40 to clean water supplied through the external hose 40 The water supply valve 41 for intermittent operation, the water supply hose 42 for guiding the water passing through the water supply valve 41, and the water supplied through the water supply hose 42 are mixed with the previously stored detergent and discharged. The tub including a detergent storage space, a water supply passageway, and a discharge port formed therein, and water containing detergent discharged from the detergent container 43 or clean water without detergent (hereinafter, referred to as 'washing water') One end is connected to the outlet of the detergent container 43 to guide the inside of the (10) and the other end is configured to include a bellows tube (44, 44) connected to the water inlet formed on the upper side of the tub (10) .

In addition, a drain hole 15 for draining the wash water is formed at the lower side of the tub 10, and a drainage bellows tube 48 for guiding the drained wash water is connected to the drain hole 15. .

The drainage bellows pipe 48 pumps water drained from the tub 10 through the drain hole 15 and the draining bellows pipe 48 to be discharged to the outside or circulated back into the drum 20. 50 are connected.

The pump unit 50 includes a pump casing 60, one pump 76, a plurality of valves 80 and 84, and a filter 90.

The pump casing 60 is connected to a drain hose 61 which is drawn out of the cabinet 4 and drains the wash water pumped from the pump casing 60 to the outside of the drum washing machine.

The pump casing 60 is connected to a circulation hose 62 for guiding the washing water pumped from the pump casing 60 to the washing water spray nozzle 16.

Reference numeral 100 is a front lower frame in which a through hole 98 through which the filter 100 penetrates is formed, and the pump casing 60 is fastened by a fastening member such as a screw.

Figure 3 is a perspective view of one embodiment of a pump unit of a drum washing machine according to the present invention, Figure 4 is an exploded perspective view of one embodiment of a pump unit of a drum washing machine according to the present invention, Figure 5 is a pump unit of a drum washing machine according to the present invention 6 is a longitudinal sectional view of an embodiment, and FIG. 6 is a cross sectional view of an essential part of an embodiment of a pump unit of a drum washing machine according to the present invention.

The pump casing 60 is formed with one water supply passage 63 and a plurality of drain passages 64, 65.

The pump casing 60 partitions the water supply flow path 63 back and forth into the filter chamber 63a and the pump chamber 63b, and a partition 63d having a through hole 63c through which the washing water passes is formed.

The plurality of drain passages 64 and 65 may include a first drain passage 64 through which the wash water pumped from one pump 76 is passed to be pumped into the circulation hose 62, and a pump from one pump 76. Washed water is composed of a second drain flow passage 65 that passes through to be pumped into the drain hose (61).

The pump casing 60 is formed in a cylindrical shape hollowed back and forth.

The pump casing 60 is formed so that the bellows pipe connection part 66 to which the drainage bellows pipe 48 is connected next to the center side of the circumference protrudes.

The pump casing 60 communicates with the inside of the pump casing 60, and the drain portion 67 in which the first and second drain flow passages 64 and 65 are partitioned therein is formed.

The drain 67 is formed to protrude above the rear side of the circumference of the pump casing 60.

The drainage portion 67 has a partition wall 68 that vertically partitions the first and second drainage passages 64 and 65 in the up and down direction.

A plurality of valve mounting holes 69 and 70 through which the valves 80 and 84 penetrate are formed in the drain 67.

The drain portion 67 is provided with a circulation hose connection portion 71 to which the circulation hose 62 is connected, and a drain hose connection portion 72 to which the drain hose 61 is connected.

The circulation hose connecting portion 71 and the drain hose connecting portion 72 protrude inclined in opposite directions to each other.

One pump 76 pumps the washing water in the pump casing 60 to the plurality of drain passages 64 and 65, and includes an impeller 77, a motor 78 for rotating the impeller 77, and a pump 78. , A waterproof cover 79 covering the upper portion of the motor 78.

One pump 76 is disposed at the rear of the pump casing 60 so that the impeller 77 is located in the pump chamber 63b of the pump casing 60, and assembly means such as the pump casing 60 and a hook or screw. Is assembled.

The plurality of valves 80 and 84 are installed in the pump casing 60 so as to correspond to the number of the drain passages 64 and 65 so as to individually open and close the plurality of drain passages 64 and 65.

That is, the plurality of valves 80 and 84 include a circulation valve 80 that opens and closes the first drain passage 64 among the first and second drain passages 64 and 65, and the first and second drain passages 64. It is configured to include a drain valve 84 for opening and closing the second drain flow path (65) of the (65).

The circulation valve 80 and the drain valve 84 are solenoid valves of a conventional structure, and are connected to solenoids 81 and 85 made up of a movable iron core and a magnetic field coil, and to solenoids 81 and 85, in particular, a movable iron core. (81) (85) In particular, it comprises a valve body (82, 86) for opening and closing each of the drain passages (64, 65) while rotating or linearly reciprocating with the movable iron core.

The solenoids 81 and 85 are mounted to be spaced apart left and right in front of the drain 67.

The valve bodies 82 and 86 pass through the valve mounting holes 69 and 70 of the drain portion 67 and are disposed inside the first and second drain flow passages 64 and 65.

The filter 90 has a handle 91 formed on the front surface thereof, and a plug portion 92 blocking the front surface of the pump casing 60, and protruding backward from the rear surface of the plug portion 92 to feed the pump casing 60. It is comprised including the foreign matter filter part 94 inserted in the flow path 63. As shown in FIG.

Looking at the operation of the present invention configured as described above are as follows.

First, in the drum washing machine, one pump 76 is driven at the time of water supply of the washing water or during the washing stroke, the circulation valve 80 is turned on, and the drain valve 84 is turned off.

The washing water in the tub 10 when the one pump 76 is driven flows into the water supply flow path 63 of the pump casing 60 through the drainage bellows pipe 48 and moves toward the impeller 77 while the filter The foreign matter is filtered through the foreign matter filter portion 94 of the 92 and is then pumped by the impeller 77 into the first and second drain passages 64 and 65 of the drain portion 67.

If the circulation valve 80 is on while one pump 76 is driven, the first drain flow path 64 is open, and if the drain valve 84 is off, the second drain flow path 65 is closed.

The washing water pumped by the impeller 77 passes through only the first drain passage 64 because the second drain passage 65 is sealed, and then the circulation hose connecting portion 71, the circulation hose 62, and the washing water spray. It passes through the nozzle 16 in sequence and is sprayed toward the inside of the drum 20.

Meanwhile, in the drum washing machine, one pump 76 is driven when the washing water is drained, the drain valve 84 is turned on, and the circulation valve 80 is turned off.

Since the driving of one pump 76, the flow of the wash water, and the foreign matter trapping during the drainage of the wash water are the same as the circulation of the wash water, detailed description thereof will be omitted.

If the drain valve 84 is on while the one pump 76 is driven, the second drain flow path 64 is opened, and if the circulation valve 80 is off, the first drain flow path 64 is closed.

The wash water pumped by the impeller 77 passes through the second drain passage 65, the drain hose connecting portion 72, and the drain hose 61 in order to be drained out of the drum washing machine.

On the other hand, the present invention is not limited to the above embodiments, and the number of the drainage flow paths 64, 65, the valves 80, 84, and the like, the partition walls 68, the valves 80, 84, and the like. It is also possible to apply a different shape and the like, and of course, various implementations are possible within the technical scope to which the present invention belongs.

Pump unit of the drum washing machine of the present invention configured as described above is a simple configuration consisting of a single pump and a plurality of valves, it is possible to control the drainage and circulation of the wash water, there is an advantage of low cost.

In addition, the pump unit of the drum washing machine of the present invention has an advantage that a partition wall for partitioning a plurality of drain passages can be formed, thereby forming a plurality of drain passages with a simple structure.

In addition, the pump unit of the drum washing machine of the present invention is formed to be inclined in the opposite direction to the drain hose connection portion and the circulation hose connection portion, it is easy to connect the drain hose and the circulation hose, there is an advantage that the assembly or service is easy.

Claims (6)

A pump casing in which one feed passage and a plurality of drain passages are formed; A pump for pumping the washing water in the pump casing into the plurality of drain passages; And a plurality of valves installed in the pump casing to individually open and close the plurality of drain passages. The method of claim 1, The pump casing is a pump unit of a drum washing machine, characterized in that the partition wall for partitioning the plurality of drain passages is formed. The method of claim 1, The pump casing is in communication with the inside of the pump casing, the circulation hose connection portion to which the circulation hose is connected and the drain hose connection portion is connected to the drain hose, characterized in that the drain portion is formed therein a plurality of drain passages are formed therein. Pump unit of drum washing machine. The method of claim 3, wherein The pump unit of the drum washing machine, characterized in that the circulating hose connecting portion and the drain hose connecting portion protrudes inclined in opposite directions. The method of claim 3, wherein The pump unit of the drum washing machine, characterized in that a plurality of water supply valve mounting hole through which the water supply valve passes. The method according to any one of claims 1 to 5, The plurality of valves are configured to include a circulation valve for opening and closing any one of the plurality of drain passages, and a drain valve for opening and closing the other one of the plurality of drain passages.

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