RU2756501C1 - Washing machine - Google Patents

Abstract

FIELD: home appliances.

SUBSTANCE: washing machine containing a gasket has been created, and the gasket includes a gasket body forming a channel connecting the inlet and the inlet of the tank, and a set of nozzles spraying washing water into the drum, and at the same time, when the gasket body is divided from two sides into the first area and the second area, the set of nozzles contains the first nozzle and the second nozzle located in the first area sequentially in the direction from bottom to top. There is a distribution tube for distributing circulating water to the first, second, third and fourth nozzles, and the distribution includes the first outlet channel and the second outlet for supplying circulating water to the first and second nozzles and the third outlet channel and the fourth outlet channel for supplying circulating water to the third and fourth nozzles, while the first and second outlet channels are parallel to each other, and the third and fourth outlet channels are parallel to each other.

EFFECT: extension of the range of laundry washers.

16 cl, 26 dwg

Description

Technology area

The present invention relates to a washing machine, and in particular to a washing machine in which a nozzle for spraying circulating water into a drum is disposed on a pad.

State of the art

Korean Patent Application Publication No. 10-2018-0131897 (hereinafter referred to as "prior art") discloses a washing machine having nozzles for spraying circulating water pumped into a drum. In the washing machine, a plurality of nozzles are provided along the inner peripheral surface of a spacer located between the casing forming the exterior of the washing machine and the tub containing water, and the plurality of receiving duct pipes are respectively in communication with the plurality of nozzles.

The guide tube guides the water (circulating water) pumped by the pump. In the guide tube, a plurality of outlet channels protruding from the annular flow path are inserted into a plurality of receiving tubes.

Each of the duct receiving tubes protrudes from the outer circumferential surface of the gasket approximately toward the outer side of the radial direction, and in response, each of the outlet ports projects from the annular flow path toward the inner side of the radial direction.

In addition, since the outlet channels are inserted into the channel receiving tubes in different directions, it is not possible to assemble two or more nozzle channels for supplying water to two or more channel receiving tubes, and thus a complex manufacturing process is required.

In addition, in order to form a gasket in a mold in which the channel receiving tubes extend in a radial direction, the mold needs to be moved in the direction in which each of the channel receiving tubes extends, and a more complex mold structure is required.

Technical challenge

An object of the present invention is to provide a washing machine having a plurality of nozzles provided in a liner for spraying circulating water into a drum, and a distribution pipe for supplying circulating water to a plurality of nozzles, the washing machine having a structure that allows the distribution pipe to be easily installed in the liner.

A second object of the present invention is to provide a washing machine in which two or more outlet ducts provided in a distribution tube can be easily separated from the receiving ducts for channels formed in a liner.

Technical solution

In the washing machine according to the present invention, the wash water discharged from the tub containing the rotary drum is pumped and the wash water is directed through the distribution pipe to be supplied to the pad.

The gasket includes a gasket body defining a channel connecting an inlet formed in the casing and a tank inlet, and a plurality of nozzles are provided on the gasket body.

When the liner body is divided on two sides into a first region and a second region, the plurality of nozzles include a first nozzle and a second nozzle disposed in the first region sequentially from bottom to top, and a third nozzle and a fourth nozzle sequentially disposed in the second region from bottom to top. ...

The wash water discharged from the pump is directed through the circulation pipe, and the wash water directed through the circulation pipe is distributed through the first, second, third and fourth nozzles.

The distribution pipe includes an inlet connected to the circulation pipe, a first part of the conduit located in a first region on the outer peripheral surface of the napkin body to guide a part of the wash water introduced through the inlet, and a second part of the conduit located in the second region on the outer peripheral surface of the pad body for guiding the supply of the remainder of the wash water supplied through the inlet.

The first outlet and the second outlet are disposed in the first part of the conduit sequentially from bottom to top for supplying wash water directed along the first part of the conduit to the first and second nozzles. The first and second outlet channels are parallel to each other.

The third outlet and the fourth outlet are arranged in the second part of the conduit sequentially from the bottom upwards to supply wash water directed through the second part of the conduit to the third and fourth nozzles. The third and fourth outlet channels are parallel to each other.

The first, second, third and fourth outlet channels may run horizontally.

The first and second outlet channels may be located below half the height of the napkin body, and the third and fourth outlet channels may be located above half the height of the napkin body.

The first outlet can be located at a height equal to the height of the second outlet, and the third outlet can be located at a height equal to the height of the fourth outlet.

The outlet of the first outlet can be located farther from the pad body than the outlet of the second outlet.

The first portion of the conduit may include a first flat surface formed flat on an inner peripheral portion that is opposite the body of the napkin, and the first outlet port may protrude from the first flat surface. The first outlet can be perpendicular to the first flat surface.

The second conduit portion may include a second flat surface formed flat on an inner peripheral portion that is opposed to the liner body, and the second outlet port may protrude from the second flat surface. The second outlet channel can be orthogonal to the second flat surface.

The first outlet port and the third outlet port may be symmetrically positioned about a reference line that divides the body of the napkin in two.

The second outlet port and the fourth outlet port may be symmetrically disposed about a reference line that divides the body of the napkin in two.

The flow cross-sectional area of the second outlet may be larger than the flow cross-sectional area of the first outlet.

The liner may further include a plurality of channel receiving tubes that protrude from the outer peripheral surface of the napkin body for insertion, respectively, into the first, second, third, and fourth nozzles, and the plurality of channel receiving tubes may communicate, respectively, with the first, second , third and fourth nozzles.

The dispensing tube may further include a press-fit protrusion that protrudes from the outer peripheral surface of at least one outlet port from the first, second, third, and fourth outlet ports to extend along the circumferential direction and press the inner peripheral surface of the port receiving tube, corresponding to at least one output channel.

A plurality of pressed-in protrusions may be provided in the longitudinal direction of at least one outlet channel.

The pressed-in protrusion may have a slope inclined towards the direction in which the at least one outlet channel is inserted into the receiving tube for the corresponding channel.

The dispensing tube may further include an end protrusion protruding from the end of the outer peripheral surface of at least one outlet channel of their first, second, third and fourth outlet channels to pass an injector inlet corresponding to the at least one outlet channel, and be inserted into the outlet of the corresponding nozzle, and the diameter of the corresponding nozzle can be reduced from inlet to outlet.

In another aspect of the present invention, a washing machine includes: a case having an inlet formed on a front surface of the case; a tub provided in the casing for containing washing water and having an inlet formed on the front surface of the tub; a drum installed in the tank with the possibility of rotation; a spacer, the spacer comprising a spacer body defining a channel connecting the inlet and the inlet of the tub, and a plurality of nozzles spraying water for washing into the drum, and wherein, when the spacer body is divided on two sides into a first region and a second region, a plurality of nozzles contains the first nozzle and the second nozzle, located in the first region sequentially in the direction from bottom to top; a pump configured to pump wash water discharged from the tub; a first circulation pipe guiding wash water discharged from the pump; and a first distribution pipe distributing wash water directed through the circulation pipe to the first and second nozzles, the first distribution pipe comprising: a first inlet connected to the first circulation pipe; a first conduit portion disposed in a first region on an outer peripheral surface of the napkin body to guide upward wash water supplied through the first inlet; a first outlet and a second outlet located on the first pipe section in series from bottom to top for supplying wash water directed along the first pipe section to the first and second nozzles and extending parallel from the first pipe section to the outer peripheral surface of the pad body.

The plurality of nozzles may further include a third nozzle and a fourth nozzle disposed in the second region sequentially from bottom to top, and the washing machine may further include: a second circulation pipe directing wash water discharged from a pump; and a second distribution pipe distributing wash water directed through the second circulation pipe to the first and second nozzles, and the second distribution pipe may include: a second inlet connected to the second circulation pipe; a second conduit portion located in a second region on the outer peripheral surface of the napkin body to direct upward wash water supplied through the second inlet; and a third outlet port and a fourth outlet port located on the second conduit portion in series from bottom to top to supply wash water directed along the second conduit portion to the third and fourth nozzles and extending parallel from the second conduit portion to the outer peripheral surface of the pad body.

Positive effects

The washing machine of the present invention can have one or more effects, as will be described later.

Firstly, since two or more channel receiving tubes integral with the gasket are parallel to each other, an opening or separation operation can be performed even if two or more nozzles are injected using a movable mold.

Secondly, two or more receiving duct tubes, viewed from the front, are formed in parallel in one of the first and second regions into which the spacer is divided, and thus, if the distribution pipe is mounted on the spacer, the outlet channels provided in the distribution pipe can move in substantially the same direction, and therefore the outlet channels can be inserted into the receiving tubes for the channels at the same time and the assembly process can be performed more conveniently.

Particularly in a structure in which the distribution pipe includes a first pipe part and a second pipe part, which branch off from the circulating water connecting passage, in which two or more outlets are formed in one of the first pipe part and a second pipe part in which two or more outlet channels extend radially and two or more channel receiving tubes extend radially, it is difficult to insert the outlet channels into the channel receiving tubes at the same time because the directions for inserting the outlet openings are different. However, the present invention solves this problem because the receiving tubes for the channels (or outlet channels) are parallel to each other.

Brief Description of Drawings

Embodiments of the invention will be described in detail with reference to the following drawings, in which like reference numbers refer to like elements, and in which:

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

FIG. 2 is a sectional view illustrating the inside of the washing machine shown in FIG. 1;

FIG. 3 is a perspective view illustrating a portion of the washing machine shown in FIG. 2;

FIG. 4 is an exploded perspective view of the assembly of FIG. 3;

FIG. 5 is a perspective view of the gasket shown in FIG. 4;

FIG. 6 is a perspective view of the distribution tube shown in FIG. 4;

FIG. 7 is a perspective view showing the assembled state of the gasket and wand;

FIG. 8 is a front view of the assembly shown in FIG. 7;

FIG. 9 - gasket, rear view;

FIG. 10 is a sectional view taken along the line A-A 'of FIG. 7;

FIG. 11 - distribution tube, front view;

FIG. 12 is a graph illustrating the water pressure in the transport pipeline;

FIG. 13 is a side view of the distribution tube shown in FIG. eleven;

FIG. 14 is a top view of an injection mold for manufacturing a gasket in accordance with an embodiment of the present invention;

FIG. 15 is a sectional view along the line B-B 'of FIG. 7;

FIG. 16 is a sectional view along the line III-III 'of FIG. nine;

FIG. 17 is a sectional view taken along line IV-IV 'of FIG. nine;

FIG. 18 illustrates the gasket and wand assembly and in particular the nozzle positions and spray widths of each nozzle;

FIG. 19 is a partial sectional view of a pump used in a washing machine according to another embodiment of the present invention;

FIG. 20 illustrates a first distribution pipe and a second distribution pipe used in a washing machine according to another embodiment of the present invention;

FIG. 21 and 22 are partial views illustrating a state in which the distribution pipe is mounted on the gasket, which specifically illustrate the residual water outlet and the residual water collection hole formed in the gasket;

FIG. 23 is an enlarged view of a structure in which a press-fit projection is formed at an outlet port in a wand according to an embodiment of the present invention;

FIG. 24 is a partial view illustrating a wand outlet according to another embodiment of the present invention;

FIG. 25 is a cross-sectional view illustrating a state in which the outlet of the wand shown in FIG. 24 is inserted into the receiving tube for the channel; and

FIG. 26 is an enlarged view of part A shown in FIG. 25.

Best Mode for Carrying Out the Invention

The advantages and features of the present invention and methods of achieving / implementing them will become apparent from the descriptions of the exemplary embodiments below with reference to the accompanying drawings. However, the present disclosure is not limited to the exemplary embodiments disclosed herein, but may be implemented in various ways. The exemplary embodiments are provided to make the present disclosure detailed and fully convey the scope of the present invention to those skilled in the art. It should be noted that the scope of the present invention is defined only by the claims. Like reference numbers denote like elements throughout the description.

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

FIG. 1-4, a washing machine according to an embodiment of the present invention includes a casing 10 defining the appearance of a washing machine, a tub 30 disposed in the casing 10 and containing wash water, a drum 40 rotatably mounted in the tub 30 for receiving laundry, and motor 50 rotating drum 40.

A front panel 11 having an inlet 12 formed therein may be located on the front surface of the casing 10. A door 20 for opening and closing the inlet 12 may be located on the front panel 11, and a detergent dispenser 14 may be mounted on the front panels 11.

In addition, a water supply valve 15, a water supply pipe 16, and a water supply hose 17 can be installed in the housing 10. When water is supplied, the wash water passed through the water supply valve 15 and the water supply pipe 16 can be mixed with the detergent in the dispenser 14 and then supplied to the tub 30 through the water supply hose 17.

Meanwhile, the direct water supply pipe 86 can be connected to the water supply valve 15 so that wash water can be supplied directly to the tub 30 through the direct water supply pipe 86 without mixing with the detergent.

The water tub may be located inside the casing 10. An inlet (or opening 31h) is formed on the front surface of the laundry tub 30. The front panel 11 and the tank 30 can be connected with an O-ring 60.

Meanwhile, the tank 30 may be formed as a single tank body or may be formed as a combination of the first tank body 30a and the second tank body 30b connected thereto. In an embodiment of the present invention, an example is described in which the first tank body 30a and the second tank body 30b are connected to form a tank 30. Hereinafter, the first tank body 30a is referred to as the “tank” 30.

The gasket 60 prevents the water contained in the tank 30 from escaping. The gasket 60 can extend from the annular front to the annular rear to thereby form an annular passage that connects the inlet 12 and 31h. The front part of the gasket 60 may be attached to the front panel 11 of the casing 10, and the rear section of the gasket 60 may be attached to the circumference of the opening 31h of the tank 30.

The spacer 60 can be made of flexible or elastic material. The spacer 60 can be made from natural rubber or synthetic resin. The spacer 60 may be formed from a material such as ethylene propylene diene monomer (EPDM), thermoplastic elastomer (TPE), or the like. Hereinafter, the part defining the inner part of the annular shape of the spacer 60 is called the inner peripheral part (or the inner peripheral surface) of the spacer 60, and the part opposite to it is called the outer peripheral part (or the outer peripheral surface) of the spacer 60.

The laundry receiving drum 40 may be rotatably provided in the tub 30. To allow the water contained in the tub to flow into the drum 40, a plurality of through holes may be provided in the drum 40.

The drum 40 is positioned such that the laundry inlet is located on the front surface of the drum 40, and the drum 40 rotates about a centerline C of rotation that is approximately horizontal. In this case, "horizontal" does not apply to its mathematical definition. That is, even when the center line C of rotation is inclined at a predetermined angle with respect to the horizontal state, the axis is more like a horizontal state than a vertical state, and thus the center of rotation of the line is considered to be substantially horizontal.

A plurality of lifters 34 may be provided on the inner surface of drum 40. The plurality of lifters 34 may be positioned at a predetermined angle relative to the center of drum 40. As drum 40 rotates, the laundry is repeatedly lifted by lifter 34 and dropped.

Additionally, a drive unit 50 may be provided to rotate the drum 40. A drive shaft 51, which is to be rotated by the drive unit 50, may pass through the rear of the tub 30 to connect to the drum 40.

Preferably, the drive unit 50 includes a direct drive wash motor, and the wash motor may include a stator attached to the rear of the tub 30 and a rotor rotating by a magnetic force acting on the stator. The drive unit 51 can rotate integrally with the rotor.

The tank 30 may be supported by a damper 19 mounted in the base 15. The vibration of the tank 30 caused by the rotation of the drum 40 is attenuated by the damper 19. In some embodiments, although not shown, a suspension (e.g., a spring) may be provided to suspend the tank 30 on cover 10.

Additives can be contained in the dispenser 14 separately according to their types. The dispenser 35 may include a detergent container (not shown) for containing the laundry detergent and a fabric softener container (not shown) for containing the fabric softener.

In addition, a pump 901 can be installed in the housing 10. The pump 901 can be connected to the tank 30 by a drain hose 72. The distribution pipe 80 can be installed in the gasket 60 and the distribution pipe 80 can be connected to the pump 901 using the circulation pipe 86. The wash water discharged from the tub 30 through the outlet hose 72 can be pumped by a pump 901, directed through the distribution pipe 80 and then sprayed into the drum 40 through the nozzles 65a, 65b, 65c and 65d provided on the gasket 60.

Meanwhile, the drain pipe 74 is also connected to the pump 901, and thus the wash water can be drained to the outside through the drain pipe 74. That is, the pump 901 according to the embodiment of the present invention functions as a drain pump for discharging water to the outside and as a circulation pump. pump for circulation of water for washing. On the other hand, the drain pump and circulation pump can be installed separately. In this case, the drain pipe 74 can be connected to the drain pump and the circulation pipe 86 can be connected to the circulation pump.

FIG. 3 and 4, the balancer 90 may be attached to the front surface 31 of the tank 30. The balancer 90 may include a first balancer 90 located on the left side of the front surface 31 of the tank and a second balancer 90b located on the right side of the front surface 31 of the tank 30.

The upper end of the first rocker 90a and the upper end of the second rocker 90b may be spaced apart. The lower end of the first rocker 90a and the lower end of the second rocker 90b can be spaced apart from each other. The first and second balancers 90a and 90b may be bilaterally symmetrical with respect to the reference line L through the center of the spacer 60, and the first and second balancers 90a and 90b may be located at positions symmetrical on both sides with respect to the reference line L.

In an embodiment of the present invention, the balance bar 90 is composed of left and right balance bars 90a and 90b attached to the left and right sides of the front surface 31 of the tank 30. Aspects of the present invention are not limited to this. The balancer 90 may be a single body or an upper balancer and a lower balancer attached to the upper and lower sides on the front surface 31 of the tank 30. In addition, the balancer may be different in shape or may be located in different positions in the tank 30.

The balancer 90 may include a first balancer 90a located on the left side of the front surface 31 of the tank 30 and a second balancer located on the right side of the front surface 31 of the tank 30. The first balancer 90a and the second balancer 90b may be spaced apart on the upper and lower sides. The first and second balancers 90a and 90b may have a shape bilaterally symmetrical with respect to a reference line L passing through the center of the spacer 60 and may be located at positions bilaterally symmetrical with respect to a reference line L.

FIG. 3 and 4, pump 901 may include a pump casing 91, a first pump motor 92, a first impeller 915 (see FIG. 19), a second pump motor 93, and a second impeller (not shown).

A water supply channel 911 (see FIG. 19), a circulation channel 912, and a drain channel 913 may be formed in the pump casing 91. A first chamber 914 (see FIG. 19) for receiving the first impeller 915 and a second chamber for receiving the second impeller are formed in the pump casing 91. The first impeller 915 is rotated by the first pump motor 92 and the second impeller is rotated by the second pump motor 93.

The first chamber 914 and circulation passage 912 form a helical flow path that swirls in the direction of rotation of the first impeller 915, and the second chamber and drain passage 913 form a spiral flow path that swirls in the direction of rotation of the second impeller. In this case, the direction of rotation of each of the impellers is preset for control by the controller. The controller may include a processor that accesses a medium that stores a program and performs computations in accordance with the stored program. In addition, the controller can control not only the pump motors 92 and 93, but also other electronic components included in the washing machine.

The water inlet 911 is connected to the outlet hose 72, and the first chamber 914 and the second chamber are in communication with the water inlet 911. Water discharged from the tank 30 through the drain hose 72 is supplied to the first chamber 914 and into the second chamber through the water inlet 911.

The first chamber 914 is in communication with the circulation passage 912, and the second chamber is in communication with the drain passage 913. Accordingly, if the first impeller 915 rotates when the first pump motor 92 is operating, water from the first chamber 914 is discharged through the circulation passage 912. Also, if operating the second pump motor 93, the second impeller rotates, and thus water from the second chamber is discharged through the drain channel 913. The circulation channel 912 is connected to the circulation pipe 86, and the drain channel 913 is connected to the drain pipe 74.

The amount of water discharged from pump 901 (or discharge pressure) is variable. To this end, the pump motors 92 and 93 are variable speed motors whose speed or rotation can be controlled. Each of the pump motors 92 and 93 is preferably, but not limited to, a brushless direct current (BLDC) motor. Additionally, a drive can be provided to control the speeds of the pump motors 92 and 93, and the drive can be an inverter drive. The inverter driver converts AC power to DC power and supplies DC power to the motors at a specified frequency.

Additionally, a controller (not shown) may be provided to control the pump motors 92 and 93. The controller may include a proportional-integral controller (PI controller), a proportional-integral-derivative controller (PID controller), and the like. The controller can receive the output value (eg, output current) of the pump motor and control the output value of the drive based on the received output value of the pump motor so that the pump motor speed matches the preset target speed.

FIG. 10, 15, 16, and 17, the gasket 60 may include a shroud connector 61 connected to the circumference of the inlet 12 of the front panel 11, a tank connector 62 connected to the circumference of the opening 31h, and a gasket body 63 extending between the connector 61 with a casing and a connecting part 62 with a tank.

The circumference of the inlet 12 in the front panel 11 can be folded outwardly, and the case connecting portion 61 can be installed in a concave region formed by the outwardly wrapped portion. An annular wire winding groove 61r may be formed in the jacket connecting portion 61. After winding the wire around the groove 61r, both ends of the wire are bonded, and therefore, the connecting part 61 with the jacket is tightly fixed on the circumference of the inlet 12.

The circumference of the tub inlet 30 is folded outwardly, and the tub connecting portion 62 is seated in a concave region formed by the outwardly wrapped portion. An annular wire winding groove 62r may be formed in the tub connecting portion 62. After winding the wire around the groove 62r, both ends of the wire are bonded, and therefore the tub connection 62 is tightly connected to the inlet of the tub 30.

While the casing connecting portion 61 is attached to the front panel 11, the tub connecting portion 62 can move in accordance with the movement of the tub 30. Accordingly, the pad body 63 should be able to transform in accordance with the movement of the tub connection 62. To allow the liner body 63 to be easily transformed, the liner 60 may include a folding portion 63b between the jacket connecting portion 61 and the tub connecting portion 62, and the folding portion 63b collapsing when the tub 30 moves in the eccentric (or radial direction) direction.

More specifically, an annular rim portion 63a extending from the casing connecting portion 61 to the tank connecting portion 62 (or to the rear) is formed in the pad body 63, and a folding portion 63b may be formed between the rim portion 63a and the connecting portion 62c tank.

Meanwhile, the spacer 60 may include an outer door contact portion 68 that bends outwardly from the front end of the rim portion 63a to come into contact with the rear surface of the door 20 outside the inlet 12 in a state in which the door 20 is closed. In the case connecting portion 61, the above-described groove 61r may be formed in a portion extending from the outer end of the outer door contact portion 68.

The gasket 60 may further include an inner door contact portion 66 that curves inwardly from the front end of the rim portion 63a to come into contact with the rear surface of the door 20 within the inlet 12 in a state in which the door 20 is closed.

Meanwhile, during rotation, the drum 40 vibrates (which means that the center line C of rotation of the drum 40 moves) and, in turn, the center line of the tub 30 (which is approximately identical to the center line C of rotation of the drum 40) also moves. In this case, the direction of movement (hereinafter referred to as "eccentric direction") has a radial direction component.

The collapsible portion 63b is folded or unfolded when the tub 30 is moved in the eccentric direction. The collapsible portion 63b may include an inner circumferential portion 631 bent from the rim portion 63a to the case connecting portion 61 and an outer circumferential portion 632 bent from the inner circumferential portion 631 to the tub connecting portion so as to be connected to the connecting portion 62 with a tank. Seen from the front, the inner peripheral portion 631 is located inwardly surrounded by the outer peripheral portion 632. As shown in FIG. 17, the rim portion 63a and the folding portion 63b may form an approximately S-shaped cross-sectional surface.

If the folding portion 63b is folded when the center of the tub 30 moves in the eccentric direction, the distance between the inner circumferential portion 631 and the outer circumferential portion 632 in that portion is reduced, and if the folding portion 62 is opened in a portion opposite to the folded portion, then the distance between the inner circumferential portion 631 and the outer circumferential portion 632 is part 631 and the outer peripheral part 632 in the opposite area increases.

Viewed from the front, a plurality of channel receiving tubes 64a, 64b, 64c and 64d may be located on the left and / or right side of the outer peripheral portion 632. The channel receiving tubes 64a, 64b, 64c and 64d may protrude outwardly from the outer peripheral portion 632 In the present embodiment, two of the channel receiving tubes 64a, 64b, 64c and 64d are located on the left side of the outer peripheral portion 632, and the other two are located on the right side of the outer peripheral portion 632. For distinguishing purposes, such tubes are respectively referred to as the first receiving tube 64a. channel, receiving tube 64b for the second channel, receiving tube 64c for the third channel, and receiving tube 64d for the fourth channel.

In particular, when the liner body 63 is divided on two sides into a left region and a right region as viewed from the front, the receiving tubes 64a and 64b for the first and second channels are located in the first region (for example, the region on the left side of the reference line L), sequentially from bottom to top, and the receiving tubes 64c and 64d of the third and fourth channels may be disposed in the second region (eg, the region to the right of the reference line L) sequentially from bottom to top.

Meanwhile, as shown in FIG. 8 and 9, a plurality of nozzles 65 may be disposed on the inner peripheral surface of the spacer 60. Preferably, the plurality of nozzles 65 may be disposed on an inner peripheral surface of the outer peripheral portion 632. To match the receiving tubes 64a, 64b, 64c, and 64d for four channels, there may be four nozzles 65a, 65b, 65c, 65d are provided (see FIG. 9). Each of the channel receiving tubes 64a, 64b, 64c, and 64d communicates with respective nozzles 65a, 65b, 65c, 65d. That is, a through hole formed in each of the passage receiving tubes 64a, 64b, 64c, and 64d communicates with the inlet of the corresponding nozzle 65a, 65b, 65c, 65d.

The receiving tube 64b for the second channel is located above the receiving tube 64a for the first channel. The receiving tube 64a for the first channel and the receiving tube 64b for the second channel may be parallel to each other. The receiving tube 64a for the first channel and the receiving tube 64b for the second channel may extend horizontally (or in the left and right directions. The through holes respectively formed in the receiving tube 64a for the first channel and receiving tube 64b for the second channel may extend horizontally and be parallel to each other.

The receiving tube 64d for the fourth channel is located above the receiving tube 64c for the third channel. The receiving tube 64c for the third channel and the receiving tube 64d for the fourth channel may be parallel to each other. The receiving tube 64c for the third channel and the receiving tube 64d for the fourth channel may extend in a horizontal direction (or in a left-right direction). The through holes respectively formed in the receiving tube 64c for the third channel and the receiving tube 64d for the fourth channel may extend horizontally and may be parallel to each other.

FIG. 9, a residual water drain 69 (see FIG. 20) for draining wash water stuck in the pad 60 may be provided at the bottom of the outer peripheral portion 632. The residual water drain 69 may protrude downwardly from the outer peripheral surface of the outer the peripheral part 632. The wash water stagnant in the folding part 63b can be discharged through the residual water drainage channel 69.

Meanwhile, the spacer 60 can be manufactured using the injection molding machine 1000. In particular, as shown in FIG. 14, an injection molding machine 1000 includes a stationary mold 1500 and movable molds 1100, 1200, 1300, and 1400 capable of being moved relative to the stationary mold 1500. The movable molds 1100, 1200, 1300, and 1400 may include a first movable mold 1100, a second movable mold 1200, a third movable mold 1300, and a fourth movable mold 1400.

Molten synthetic resin discharged from an injection molding machine (not shown) is injected into a cavity that is formed by a stationary mold 1500, a first movable mold 1100, a second movable mold 1200, a third movable mold 1300, and a fourth movable mold 1400.

Stationary mold 1500 can be located in the center, and first mold 1100, second mold 1200, third mold 1300, and fourth mold 1400 can be positioned around the circumference of stationary mold 1500. When the molds are opened, first mold 1100 moves in the forward direction (upward direction in FIG. 14) away from stationary mold 1500, second mold 1200 moves to the right of stationary mold 1500, third mold 1300 moves backward (downward direction in FIG. 14) from stationary mold 1500, and fourth mold 1400 moves to the left of the stationary mold 1500.

The residual water drainage passage 69 located on the underside of the gasket 60 can be molded by the third movable mold 1300. Since the residual water drainage passage 69 extends in the direction of travel of the third movable mold 1300, demolding can be performed smoothly.

The receiving tube 64a for the first channel and the receiving tube 64b for the second channel located on the left side of the pad 60 can be molded with the fourth movable mold 1400. The fourth movable mold 1400 is movable in the left direction, and the receiving tube 64a for the first channel and the receiving tube the tube 64b for the second channel may protrude in a direction identical to the direction of travel (i.e., to the left) of the fourth movable mold 1400.

The receiving tube 64a for the first channel and the receiving tube 64b for the second channel may be parallel to each other. In other words, the direction in which the first channel receiving tube 64a protrudes from the outer peripheral surface of the outer peripheral portion 632 may be the same as the direction in which the second channel receiving tube 64b protrudes from the outer peripheral surface of the outer peripheral portion 632.

The receiving tube 64c for the third channel and the receiving tube 64d for the fourth channel located on the right side of the pad 60 can be molded with the second movable mold 1200. The second movable mold 1200 is movable in the right direction, and the receiving tube 64c for the third channel and the receiving tube the tube 64d for the fourth channel may protrude in a direction identical to the direction of travel (i.e., the right direction) of the second movable mold 1200.

The receiving tube 64c for the third channel and the receiving tube 64d for the fourth channel may be parallel to each other. In other words, the direction in which the third channel receiving tube 64c protrudes from the outer peripheral surface of the outer peripheral portion 632 may be the same as the direction in which the fourth channel receiving tube 64d protrudes from the outer peripheral surface of the outer peripheral portion 632.

Since the first movable 1100, the second movable 1200, the third movable 1300 and the fourth movable 1400 move in different directions (or the first movable 1100 and the third movable 1300 move in different directions, and the second movable 1200 and the fourth movable 1400 move in different directions), receiving tubes or channels may be formed on the top side, left side, right side, and bottom side of the gasket 60, respectively.

The pad body 63 may be symmetrical about the reference line of symmetry L. The receiving tube 64a for the first channel and the receiving tube 64c for the third channel may be located at the same height. The receiving tube 64b for the second channel and the receiving tube 64d for the fourth channel may be located at the same height. The receiving tube 64a for the first channel and the receiving tube 64c for the third channel may be in a vertically symmetrical structure, which is a structure symmetrical about the reference line of symmetry L. Similarly, the receiving tube 64b for the second channel and the receiving tube 64d for the fourth channel may be in a vertically symmetrical design.

Meanwhile, as shown in FIG. 9, the width of the rim portion 63a may gradually increase in an upward direction (or forward and backward). In this case, in response to an increase in the width of the inner peripheral portion 631, the outer peripheral portion 632 is displaced further backward in an upward direction. Accordingly, the receiving tube 64c for the third channel is closer to the tank 30 than the receiving tube 64d for the fourth channel, and the receiving tube 64a for the first channel is closer to the tank 30 than the receiving tube 64b for the second channel.

FIG. 5, 6, 7 and 18, a plurality of nozzles 65a, 65b, 65c, 65d may be provided, which discharge the circulating water into the drum 40. The plurality of nozzles 65a, 65b, 65c, 65d are respectively connected to the receiving tube 64a for the first channel, the receiving tube 64b for the second channel, a receiving tube 64c for the third channel, and a receiving tube 64d for the fourth channel. Hereinafter, the nozzle communicating with the receiving tube 64a for the first circulating water receiving channel is called the first nozzle 65a, the nozzle communicating with the receiving tube 64b for the second circulating water receiving channel is called the second nozzle 65b, the nozzle communicating with the receiving tube 64c for the third circulating water receiving channel is called the third nozzle 65c, and the nozzle communicating with the receiving tube 64d for the fourth circulating water receiving channel is called the fourth nozzle 65d.

As described above, a plurality of duct receiving tubes 64a, 64b, 64c and 64d extend horizontally, and a plurality of outlet channels 84 (84a, 84b, 84c, and 84d) described below extend horizontally to correspond to a plurality of duct receiving tubes 64a, 64b, 64c and 64d for channels. Accordingly, the circulating water is supplied or directed by each of the outlet ducts 84a, 84b, 84c, and 84d in the horizontal direction.

The nozzles 65a, 65b, 65c, 65d may be configured to discharge circulating water supplied in the horizontal direction, as described above, in a direction that forms a predetermined angle with respect to the horizontal direction. That is, although the circulating water is supplied in a horizontal direction through each of the outlet ports 84a, 84b, 84c, and 84d or the port receiving tubes 64a, 64b, 64c, and 64d, the direction in which each of the nozzles 65a, 65b, 65c, 65d is discharged circulating water can be up or down at a predetermined angle with respect to the horizontal direction.

FIG. 18 illustrates the gasket and wand assembly and, in particular, the nozzle positions and spray widths of each nozzle. FIG. 18, as described above, four nozzles 65 may be provided in the spacer 60. Hereinafter, the two nozzles 65b and 65d in the upper positions of the four nozzles 65 are referred to as the upper nozzles 65b and 65d. Seen from the front, the left nozzle of the upper nozzles 65b and 65d is called the first upper nozzle 65b, and the right nozzle of the upper nozzles 65b and 65d is called the second upper nozzle 65d.

The upper nozzles 65b and 65d are located above the center O of the gasket 60 to spray the circulating water downward. Here, the center O is a predetermined point located on the reference line of symmetry L of the pad 60. The center O is preferably located at half the height H of the pad 60, but aspects of the present invention are not limited thereto.

Seen from the front, the first upper nozzle 65b is located in the left region of the reference line L to thereby spray the circulating water downward toward the right region of the reference line. Seen from the front, the second upper nozzle 65d is located in the right region of the reference line L, so as to spray the circulating water downward toward the left region of the reference line L.

The first upper nozzle 65b and the second upper nozzle 65d may be vertically symmetrical with respect to the reference line L. Accordingly, the shape of the water streams sprayed through the first upper nozzle 65b and the second upper nozzle 65d are symmetrical with respect to the reference line L.

In addition, the two nozzles located below the upper nozzles 65a and 65c are referred to as lower nozzles 65b and 65d. Seen from the front, the left injector of the lower injectors 65a and 65c is called the first lower injector 65a, and the right injector of the lower injectors 65a and 65c is called the second lower injector 65c.

Seen from the front, the first lower nozzle 65a is located in the left region of the reference line L, so as to spray the circulating water upward towards the right region of the reference line L.

Seen from the front, the second lower nozzle 65c is located in the right region of the reference line L to thereby spray the circulating water upward towards the left region of the reference line L.

The first lower nozzle 65a and the second lower nozzle 65c may be vertically symmetrical with respect to the reference line L. Accordingly, the shape of the water jets sprayed through the first lower nozzle 65a and the second lower nozzle 65c are symmetrical with respect to the reference line L.

FIG. 15, 16 and 17, the nozzle 65a may be formed in the body 63 of the gasket 60 and preferably protrude from the inner peripheral surface of the outer peripheral portion 632. The nozzle 65a may include a nozzle port 651 and a nozzle head 652. In particular, the nozzle port 651 is circular in shape and is connected to a nozzle head 652 protruding from the inner peripheral surface of the outer peripheral portion 632.

The nozzle head 652 may include a collision surface 652a that is impacted by water discharged from the outlet 84 and a first side surface 652b (see FIG. 9) and a second side surface 652c that are located on both sides of the collision surface 652a. The cone-shaped space is defined by the collision surface 652a, the first side surface 652b and the second side surface 652c, and the water discharged from the nozzle passage 651 collides with the collision surface 652a in space and then is discharged through the spray hole 657.

The first side surface 652b and the second side surface 652c extend from the left edge and the right edge of the collision surface 652, respectively, and define the left and right boundaries of water flow along the collision surface 652a.

The angle γ formed by the first side surface 652b and the second side surface 652c is approximately 45 ° to 55 °, and preferably 50 °, but aspects of the present invention are not limited to this.

If the spray width of each water stream sprayed through the nozzles 65 is determined by the spray width angle, the spray width angle may be determined by the first side surface 652b and the second side surface 652c. In particular, the spray width angle can be defined as the angle formed by the first boundary where the collision surface 652a and the first side surface 652b meet, and the second boundary where the collision surface 652a and the second side surface 652c meet.

FIG. 17, the spray width angle β1 for the upper nozzles 65b and 65d may be less than the spray width angle β2 for the lower nozzles 65a and 65c. While the water supplied through the inlet 81 rises through the distribution pipe 801, part of the circulating water is sprayed through the lower nozzles 65a and 65c, and the remainder of the circulating water is sprayed through the upper nozzles 65b and 65d. Thus, the amount of water discharged from the upper nozzles 65b and 65d is less than the amount of water discharged from the lower nozzles 65a and 65c. Accordingly, if the spray width of the upper nozzles 65b and 65d is set smaller than the spray width of the lower nozzles 65a and 65c (β1 <β2), in order to thereby relatively compensate for the discharge pressure of the upper nozzles 65b and 65d, water can be discharged from all of the nozzles 65a, 65b, 65c, 65d with substantially uniform outlet pressure.

The difference β2-β1 between the spray width angle β2 for the lower nozzles 65a and 65c and the spray width angle β1 for the upper nozzles 65b and 65d may be approximately 4 ° to 6 °, and preferably 5 °. In this case, β1 is approximately 38 ° to 42 °, preferably 40 °, and β2 is approximately 43 ° to 47 °, and preferably 45 °.

Meanwhile, the spray direction for each upper nozzle 65b and 65d may form an upward deflection angle Φ with respect to a line R that connects each of the upper nozzles 65b and 65d and the center O of the spacer 60 (which is referred to as the “nozzle center line”). Here, the spray direction DR of each upper nozzle 65b and 65d is defined along a straight line uniformly dividing the angle formed by the first side surface 652b and the second side surface 652c, and the spray direction DR is higher than the nozzle alignment line R. The upward deflection angle Φ may be between 5 ° and 9 °, preferably 7 °.

Due to various conditions such as the height, position and angle β1 of the spray width of each of the upper nozzles 65b and 65d, water cannot be sprayed with sufficient pressure through each upper nozzle 65b and 65d, and thus the spray water cannot be sprayed on long distances in a straight line. For this reason, the spray direction of each upper nozzle 65b and 65d is set to be higher by an upward deflection angle Φ than the nozzle alignment line R, so that the water flow can reach the region through which the nozzle alignment line R passes even when the discharge pressure for each top nozzle 65b and 65d is insufficient. Preferably, as shown in FIG. 17, the shape of the water jet sprayed through each of the upper nozzles 65b and 65d may be a substantially horizontally symmetrical water jet shape sprayed through each of the lower nozzles 65a and 65c.

Meanwhile, in a case where the angle from the lowest point in the spacer 60 to each of the lower nozzles 65a and 65c is α1, each of the upper nozzles 65b and 65d is located between the position corresponding to the angle α1 and the highest point H in the spacer 60, and each top nozzle 65a or 65c may be located above a point corresponding to an angle calculated by halving 180-α1. That is, in FIG. 17, α2 is more important than α3. The α2-α3 value can be between 18 ° and 22 ° and preferably 20 °. In this case, α2 can be between 63 ° and 67 °, preferably 65 °.

Meanwhile, each of the lower nozzles 65a and 65c may be located at a point of one third (1 / 3H) of the height H of the spacer 60. In this case, it is preferable that α2 is set within a range in which each of the upper nozzles 65b and 65d is higher than a point at two thirds (2 / 3H) of the height of spacer 60, at which point α2 can be 65 °.

In order to spray the circulating water evenly up and down in the drum, it is preferable that the upper nozzles 65b and 65d and the lower nozzles 65a and 65c are equally spaced in the height direction. However, in this case, the water jets sprayed from the upper nozzles 65b and 65d are sprayed downward by gravity, and there is a problem that the water flow actually reaches a region lower than geometrically predicted. Therefore, given that the water flows further downward due to gravity, the upper nozzles 65b and 65d need to be located at a point higher than the 2 / 3H point.

Meanwhile, when the circulating water is sprayed through the lower nozzles 65a and 65c while the pump 901 is operating, it is preferable that the water level in the tank 30 does not exceed the 1 / 3H point.

Meanwhile, as shown in FIG. 9, viewed from the front, the spraying direction DRa of the lower nozzle 65a may form an angle a with respect to the length direction of the duct receiving tube 64a (or the direction in which water is introduced into the nozzle 65a, that is, the water absorption direction).

Since the nozzle 65a and the nozzle 65c are symmetrically disposed, the angle formed by the spray direction DRc of the nozzle 65c with respect to the duct receiving tube 64c is also an angle a.

In addition, when viewed from the front, the spray direction DRb of the upper nozzle 65b may form an angle b with respect to the length direction of the duct receiving tube 64b (or the direction in which water is introduced into the nozzle 65b, that is, the water supply direction). Here, the angle b can be between 133 ° and 135 °. Angle b can be less than angle a.

Since the nozzle 65b and the nozzle 65d are symmetrically disposed, the angle formed by the spray direction DRd of the nozzle 65d with respect to the duct receiving tube 64d is also an angle b.

Meanwhile, the nozzle passage 651 runs horizontally, thereby directing water in a horizontal direction. Accordingly, since the water flow moves in a constant direction without being influenced by gravity until it reaches the nozzle head 652 and is then scattered by the collision surface 652a, water can be sprayed in a uniform form from each nozzle 65a, 65b, 65c, 65d.

If the length direction of the nozzle duct 651 is not approximately horizontal but is directed towards the center O of the gasket 60, gravity acts on the downward movement of water flowing in the nozzle duct 651 of each of the upper nozzles 65b and 65d, and thus this water can spray faster than water sprayed from each of the lower nozzles 65a and 65c. In addition, gravity acts on the upward motion of the water flowing through the nozzle passage 651 of each of the lower nozzles 65a and 65c, and thus this water can be sprayed more slowly than the water sprayed from each of the upper nozzles 65b and 65d. For this reason, it is difficult for the water sprayed from the plurality of nozzles 65a, 65b, 65c, 65d into the drum 40 to have a uniform shape. In contrast, in the present embodiment, the length direction of the nozzle passage 651 is approximately horizontal, and thus water sprayed from the plurality of nozzles 65a, 65b, 65c, 65d into the drum 40 can be uniformly shaped.

Meanwhile, the inlet 651a of the nozzle channel 651 may be larger than the outlet 651b. The circulating water discharged from the outlet 651b hits the collision surface 652a of the nozzle head 652 and is then sprayed into the drum 40 through the spray hole 657. The direction in which the spray hole faces and the length direction of the nozzle passage 651 may intersect with each other.

The pad 60 may include a protruding portion 655 protruding from an inner peripheral surface of the pad body 63. To correspond to a plurality of nozzles 65a, 65b, 65c, and 65d, a plurality of projections 655 may be formed along the peripheral direction. An orifice 657 for spraying each of the nozzles 65a, 65b, 65c, and 65d may be formed in a corresponding projection 655 (see FIG. 9).

FIG. 15, the nozzle passage 651 may include a flow path reduction portion 651c in which the inner diameter gradually decreases in the direction of water movement. The inner diameter of the flow path reduction portion 651c can be gradually reduced to the nozzle head 652.

Meanwhile, at least a portion of the wand 801 may be disposed between the outer peripheral surface of the spacer 60 and the balance bar 90a and 90b. The distribution tube 801 can be installed in an existing space (i.e., the space between the outer peripheral surface of the spacer 60 and the balancers 90a and 90b) without the need for additional installation space.

The pair of top nozzles 65b and 65d may be formed higher than the inlet 81 and are located on the left and right sides of the inlet 81, respectively. The pair of top nozzles 65b, 65d are symmetrical about the reference line L through the center O (see Fig. 9), and thus the spray directions of the respective top nozzles 65b, 65d are also symmetrical about the reference line L.

The pair of top nozzles 65b and 65d may be located higher than the center O or center C of the drum 40. The respective top nozzles 65b and 65d spray the circulating water downward, so when viewed from the front of the drum 40, the circulating water is sprayed to pass through the region higher than the center C of the drum 40 at the inlet of the drum 40 and moves in a downwardly inclined direction towards a region deep inside the drum 40.

The pair of lower injectors 65a and 65c is located above inlet 81 but below the pair of upper injectors 65b and 65d. The pair of lower nozzles 65a and 65c may be located, respectively, on the left and right sides with respect to the inlet 81. Preferably, the pair of lower nozzles 65a and 65c are located symmetrically with respect to the reference line, so that the spray directions of the respective lower nozzles 65a and 65c are symmetrical with respect to the reference line L.

A pair of lower nozzles 65a and 65c may be located below the center O or center C of the drum 40. The respective lower nozzles 65a and 65c spray the circulating water upward, so when viewed from the front, the circulating water is sprayed to pass through the region below the center C the drum 40 into the inlet of the drum 40 and move in an upwardly inclined direction towards a region deep inside the drum 40.

FIG. 17, consider an example of the first injector 65a. One end of the nozzle duct 651 communicates with the receiving tube 64a for the first duct and the other end is open inside the tank 30. One end of the nozzle duct 651 has a smaller cross-sectional area than the other end. A through hole 651a is formed inside the nozzle passage 651.

The nozzle head 652 prevents the circulating water from spraying and changes the spray direction of the circulating water. The nozzle head 652 sprays the circulating water towards the inside of the rear side of the tank 32.

The other end 653 of the nozzle head 652 is located at a distance from the outlet side (other side) of the nozzle passage 651. Located at a distance from the other end of the nozzle port 651, the nozzle head 652 is positioned to hide the nozzle port 651. The circulating water hits the inner surface of the nozzle head 652, thereby changing the direction of discharge. The other end 653 of the nozzle head 652 faces the rear of the tank 30.

The circulating water discharged through the outlet 651c of the nozzle channel 651 hits the collision surface 652a of the nozzle head and is then sprayed into the tank 30 through the spray hole 657. The direction in which the spray hole 657 is facing intersects with the direction in which the nozzle passage 651 extends.

FIG. 6, the distribution pipe 801 includes an inlet 81 connected to a circulation pipe 86, a transport conduit 80 guiding water introduced through an inlet 81, and a plurality of outlet channels 84a, 84b, 84c, and 84d protruding from the transport conduit 80.

The distribution pipe 801 branches out the circulating water discharged from the circulation pipe 86 to thereby form a first additional stream FL1 (see FIG. 13) and a second additional stream FL2 (see FIG. 13). In the distribution pipe 801, at least one outlet 84b or 84c is formed in the first flow path through which the first additional flow FL1 is directed so that the circulating water is discharged through the corresponding outlet 84b or 84c to the corresponding nozzle 65b or 65c. Likewise, at least one outlet 84d is formed in the second flow path through which the second additional flow FL2 is directed so that the circulating water is discharged through the respective outlet 84d to the corresponding nozzle 65d. The transport conduit 80 may include a first conduit portion 80a defining a first flow path and a second conduit portion 80b defining a second flow path.

One end of the first pipeline portion 80a and one end of the second pipeline portion 80b are connected to each other, and the inlet 81 protrudes in the connected portion. However, the other end of the first pipeline portion 80a and the other end of the second pipeline portion 80b are separated from each other. That is, the transport conduit 80 is generally Y-shaped to thereby branch the circulating water introduced through one inlet (i.e., inlet 81) into two flow paths.

The nozzles 65a, 65b, 65c, 65d can be classified as upper nozzles 65b and 65d and lower nozzles 65a and 65c in height on the spacer 60. In the present embodiment, four nozzles 65a, 65b, 65c, 65d are provided. The four nozzles 65a, 65b, 65c, 65d may include a first lower nozzle 65a and a second lower nozzle 65c located at the bottom of the gasket 60, as well as a first upper nozzle 65b and a second upper nozzle 65d that are located higher than the lower nozzles 65b and 65d.

The number of outlets 84a, 84b, 84c and 84d corresponds to the number of nozzles 65a, 65b, 65c, 65d, and each of the outlets 84a, 84b, 84c and 84d supplies circulating water to the corresponding nozzle from nozzles 65a, 65b, 65c, 65d.

Outlets 84a, 84b, 84c, and 84d may include a first upper outlet 84b supplying circulating water to a first upper nozzle 65b, a second upper outlet 84d supplying circulating water to a second upper nozzle 65d, a first lower outlet 84a supplying circulating water to the first lower nozzle 65a; and a second lower outlet 84c supplying the circulating water to the second lower nozzle 65c.

The transport conduit 80 is located around the circumference of the outer peripheral portion of the gasket 60 and is connected to the pump 901 through the circulation pipe 86. The respective outlet channels 84a, 84b, 84c and 84d project inwardly from the transport pipe 80 in a radial direction and are inserted into the gasket 60 to supply the circulating water to the corresponding injectors 65a, 65b, 65c, 65d.

The distribution pipe 801 may include an inlet 81 that protrudes from the transport pipe 80 and connects to the circulation pipe 86. The inlet 81 can protrude outwardly from the transport pipe 80 in a radial direction.

FIG. 11 is a front view of a wand. FIG. 11, the first pipeline section 80a may include a first section 851, a second section 852, a third section 853, and a fourth section 854. The second pipeline section 80b has a symmetrical shape to the first pipeline section 80a and has a configuration substantially identical to that of the first pipeline section 80a. ... Therefore, the following description of the first pipeline portion 80a can be applied even to the second pipeline portion 80b.

The first section 851 extends from the inlet 81. The first section 851 is an arcuate section that extends at a predetermined curvature. In the present embodiment, the first section 851 is a curved line having an approximately predetermined curvature, but aspects of the present invention are not limited to this. In some embodiments, the first section 851 may have a shape that connects two or more curved lines having different curvatures.

The second section 852 may extend from the first section 851 and be shaped outwardly widening from the first section 851. In other words, the second section 852 corresponds to a portion that curves outward (i.e., away from the center O) from the upper end of the first section 851 and extends at a distance L2. The length L2 of the second section 852 may be less than the length L1 of the first section 851.

The third section 853 is a portion that curves inwardly (i.e., toward the center O) from the second section 852 and extends a distance L3. The third section 853 may extend substantially vertically upward from the second section 852. The lower outlet 84b may be formed in the third section 853 and extend in a horizontal direction (or in a direction orthogonal to the second section 852).

In the third section 853, the first flat surface 860a on which the lower outlet 84b protrudes may be flat. The first flat surface 860a may extend in the vertical direction. At least a portion of the first flat surface 860a can come into contact with the outer surface of the napkin body 63. In addition, the end portion of the channel receiving tube 64a can be firmly in contact with the first flat surface 860a.

The fourth section 854 is curved inwardly (i.e., in the direction proximal to the inlet O) from the third section 853 and extends further a distance L4 to thereby reach the end portion of the first tubing portion 80a. The upper outlet 84b may be formed in the fourth section 854, and preferably in the end portion of the fourth section 854, as shown in the present embodiment. The fourth section 854 may be in the form of a curved line having a predetermined curvature and may extend in a direction intersecting the direction of the length of the upper outlet duct 84b.

At the end of the first portion 80a of the conduit (or at the end of the fourth section 854), a second flat surface 860b may be formed on which the upper outlet 84b protrudes. The second flat surface 860b may extend in the vertical direction. In this case, the first flat surface 860a and the second flat surface 860b are parallel to each other. At least a portion of the second flat surface 860b may contact an end portion of the channel receiving tube 64b.

At the same time, since the fourth section 854 is curved inwardly from the third section 853, the second flat surface 860B where the upper outlet channel 84b is formed, when viewed from the front, is located closer to the reference line of symmetry L than the first flat surface 860a on which a lower outlet channel 84a is formed. In addition, it is preferable that the second flat surface 860b is closer to the outer surface of the napkin body 63 than the first flat surface 860a.

Meanwhile, in FIG. In Fig. 11, reference numeral 860c denotes a flat surface from which the lower outlet 84c protrudes, and reference numeral 860d denotes a flat surface from which the upper outlet 84d protrudes.

In addition, when viewed from the front side, the end portion of the upper outlet 84b is located at a position closer to the reference line of symmetry L than the end portion of the lower outlet 84a.

FIG. 11 and 12, a lower duct connecting portion 858 of the first conduit portion 80a may be formed at a portion coupled to the first outlet port 84a, and an upper duct junction portion 857 may be formed at a portion coupled to the second outlet port 84b.

Likewise, in the second conduit portion 80b, a lower duct connection portion 868 of the second duct portion 80b may be formed at a portion connected to the third outlet duct 84c, and an upper duct connection portion 867 may be formed in a portion associated with the fourth outlet duct 84d.

When viewed from the front, the respective portions 857, 858, 867 and 868 of the duct connection may have a shape that is more convex forward than the surrounding area. The width P of each of the duct connection portions 857, 858, 867 and 868 may be greater than the width W of the surrounding portions. In other words, conduits 80a and 80b may exit inlet 81 with a constant width W, protrude convexly forward from portions 858 and 868 of the duct connection, and then decrease in width so as to reach portions 857 and 867 of width W. Meanwhile the width P of portions 857, 858, 867 and 868 of the duct connection may be greater than the diameter t of the outlet duct 84a.

Meanwhile, as shown in FIG. 15, on the outer surface of each of the outlet ports 84a, 84b, 84c, and 84d, an annular press-fit protrusion 869 may be formed that extends along the peripheral surface. The pressed-in protrusion 869 may be provided in a plurality along the length direction of each of the outlet ports 84a, 84b, 84c, and 84d. The pressed-in protrusion 869 may have a wedge-shaped cross section. When the first outlet 84a is inserted into the channel receiving tube 64a, 64b, 64c, or 64d, the press-fit protrusion 869 presses the inner peripheral surface of the channel receiving tube 64a, 64b, 64c, or 64d, thereby increasing the traction force.

If the direction in which the outlet ducts 84b, 84c, and 84d are inserted into the duct receiving tubes 64a, 64b, 64c, and 64d is defined as the first direction, the press-in protrusion 869 may include a vertical surface and an inclined surface that is inclined to the height gradually decreases from the vertical surface to the first direction. When the outlet ports 84, 84b, 84c and 84d are inserted into the port receiving tube 64a, 64b, 64c and 64d, the press fit is easily activated due to the inclined surface. Once the press-fit is complete, the outlet ports 84, 84b, 84c and 84d cannot be easily separated from the port receiving tubes 64a, 64b, 64c and 64d due to the vertical surface. The distribution tube 801 can be connected to the gasket 60 without the use of a bonding member (eg, a clamp), and thus no running time is required to screw the bonding member.

Meanwhile, while the outlet ports 84a, 84b, 84c, and 84d are inserted into the port receiving tubes 64a, 64b, 64c, and 64d, the end portions of each of the outlet ports 84a, 84b, 84c, and 84d can reach the nozzle port 651. At this point, the inner peripheral surface of each of the outlet ports 84a, 84b, 84c, and 84d and the inner peripheral surface of the port 651 form a substantially continuous surface, thereby reducing the resistance of the circulating water. The nozzle passage 651 is circular in shape, protrudes from the inner peripheral surface of the outer peripheral portion 632 and is connected to the corresponding nozzle head 652.

FIG. 19 is a partial sectional view of a pump used in a washing machine in accordance with another embodiment of the present invention. FIG. 20 shows a first wand and a second wand applicable to another embodiment of the present invention.

FIG. 19 and 20, unlike the above-described embodiment, two wands 802 and 803 may be installed in a spacer 60. A pair of wands 802 and 803 may include a first wand 802 located on one side of the reference line L and a second wand pipe 803 located on the other side of the reference line L.

A pump 902 is provided for supplying circulating water to two distribution pipes 802 and 803. Pump 902 may include two circulation channels 912a and 912b. Although not shown in the drawings, two circulation pipes connect circulation channels 812a and 912b to wand pipes 802 and 803, respectively.

In particular, the pump 902 includes a pump casing 91, an impeller 915 disposed in the pump casing 915, and a pump motor 92 configured to provide torque to rotate the impeller 915.

The pump casing 91 forms a chamber in which the impeller 915 is located. The pump casing 91 includes a water inlet 911 connected to a drain hose 72 for directing circulating water into the chamber, and a first circulation passage 912 and a second circulation passage 912b for discharging water pumped by the impeller 915.

The water flow generated by the rotation of the impeller 915 by the pump motor 92 is discharged through the first circulation passage 912a and the second circulation passage 912b simultaneously. In this case, water discharged through the first circulation pipe 912a is supplied to the first distribution pipe 802 through a first circulation pipe (not shown), and water discharged through the second circulation passage 912b is supplied to the second distribution pipe 803 through a second circulation pipe (not shown). ).

The first distribution pipe 912a supplies circulating water to the first nozzle 65a and the second nozzle 65b. The first distribution pipe 912a may include a first inlet 81a connected to the first circulation passage 912a through a first circulation pipe, a first pipe portion 80a guiding circulating water introduced through the first inlet 81a, and two outlets 83a and 84b located in the first part 80a of the pipeline.

The two outlet ducts 83a and 84b can be inserted, respectively, into the receiving tube 64a for the first channel and the receiving tube 64b for the second channel.

The second distribution pipe 803 supplies circulating water to the third nozzle 65c and the fourth nozzle 65d. The second distribution pipe 803 may include a second inlet 81b connected to the second circulation passage 912b via a second circulation pipe, a second pipe portion 80b guiding circulating water introduced through the second inlet 81b, and two outlets 84c and 84d located in the second part 80b of the pipeline.

The two outlet ducts 84c and 84d can be inserted into the receiving tube 64c for the third channel and the receiving tube 64d for the fourth channel, respectively.

Meanwhile, the pump casing 91 may further include an outlet 913 coupled to a drain tube 74. As in the above embodiment, the pump 901 may further include a chamber 916 into which circulating water is introduced through the water inlet 911 and which communicates with the outlet channel 913, the impeller 917, rotating in the chamber 916, and the second pump motor 93, rotating the impeller 917 (see Fig. 3 and 4).

FIG. 23 is an enlarged view of a structure in which a press-fit protrusion is formed in the outlet of the wand according to the embodiments of the present invention. FIG. 24 is a partial view of an outlet in a wand according to another embodiment of the present invention. FIG. 25 is a cross-sectional view of a wand, the outlet of which is inserted into the wand. FIG. 26 is an enlarged view of detail A of FIG. 25.

Hereinafter, with reference to FIG. 23, 24 and 25, the pressed-in protrusion 869 and the end protrusion 842 formed in the upper outlet channel 84b will be described with reference to FIGS. 23 and 25. However, the projections 869 and 842 can be applied to other outlet passages described above with reference to FIGS. 1-22.

Referring to FIG. 23, 24 and 25, a press-fit protrusion 869 may be formed on the outer peripheral surface of the outlet 84b. An end protrusion 842 may be formed at the end of the outlet 84b.

In an embodiment, only a press-fit protrusion 869 may be formed in the outlet port 84b as shown in FIG. 23, or both the pressed-in protrusion 869 and the end protrusion 842 may be formed in the outlet 84b as shown in FIG. 24.

The diameter of the nozzle 65b may gradually decrease from the inlet 661 to the outlet 662. When the outlet 84b is pressed against the outlet 662 of the nozzle 65b, the small diameter outlet 662 can press the end of the outlet 84b more tightly, thereby tightly connecting the outlet 84b and the nozzle 65b.

The outlet 662 includes an annular stepped portion 662a towards the interior of the drum 40. An end protrusion 842 may be formed at the end of the outlet 84b to hook into the stepped portion 662a when pressed into the nozzle 65b of the outlet 84b.

The end protrusion 842 may protrude in a ring shape along the end of the outlet 84b. The predetermined slope 842a is formed in the press-in direction of the outlet port 84b. The vertical surface 842b is formed in a direction opposite to the press-in direction of the outlet 84b. Accordingly, the vertical surface 842b and the stepped portion 662a engage with each other while the vertical surface 842b and the stepped portion 662a contact each other.

Since the slope 842a is formed in the pressing direction of the outlet 84b, the outlet 84b can be smoothly moved until the end protrusion 842 engages the stepped portion 662a. In addition, since the vertical surface 842b and the stepped portion 662a are in contact with the surface, the tightness between the vertical surface 842b and the stepped portion 662a is improved, and thus, even if a force is applied to the outlet port 84b in the opposite direction to the press-in direction, the outlet channel 84b is not easy to separate.

In addition, the stepped portion 662a is formed in a direction opposite to the direction in which a force is applied to the outlet 84a when circulating water is supplied to the drum 40, and thus the stepped portion 662a prevents the outlet 84a from separating and secures the outlet 84b to the gasket 60 ...

Finally, the movement of the outlet 84a is limited by the pressed-in ridge 869 at the inlet 661, and the end ridge 842 and the stepped portion 662a are hooked at the outlet 662 to thereby lock the outlet 84a. Accordingly, although water pressure, vibration, and any other external force is applied during the circulation of the circulating water, the wand pipes 801, 802, and 803 are not easily separated from the gasket 60.

Meanwhile, the above description regarding the pressed-in protrusion 689 of the end protrusion 842 and the relationship therebetween can be applied to the present invention and any other embodiment.

As shown in FIG. 11, the outer diameter of the first outlet 84a is denoted as t1 and the inner diameter of the first outlet 84a is denoted as DA1. The outer diameter of the second outlet 84b is denoted as t2, the inner diameter of the second outlet 84b is denoted as D2, and the inner cross-sectional area (or flow cross-sectional area) is denoted as DA2. The inner diameter (or flow cross-sectional area) of the inlet 81 is denoted as D3 and the inner cross-sectional area of the inlet port is denoted as DA3.

The wash water introduced through the inlet 81 is directed to the first conduit portion 80a and the second conduit portion 80b, and then directed upward. The wash water directed up the first pipe portion 80a may be discharged through the first outlet 84a and the second outlet 84b in series. Likewise, wash water directed up the second conduit portion 80b is discharged through the third outlet 84c and the fourth outlet 84d sequentially.

The water pressure gradually decreases as the water flows rise along the pipeline portions 80a and 80b. In particular, FIG. 12 shows the highest water pressure PA (water pressure at point A in FIG. 11) at the inlet port 81, the second highest water pressure PB (water pressure at point B in FIG. 11) in the first and third outlets 84a and 84c, and PC with the lowest water pressure (water pressure at point C in FIG. 11) in the second and fourth outlets 84b and 84d.

As noted above, there is a difference in water pressure between the outlet ports 84a and 84c in the lower positions (hereinafter referred to as the lower outlet ports) and the outlet ports 84b and 84d in the upper positions (hereinafter referred to as the upper outlet ports). Thus, if the outlet ports have the same inner diameter, the amount of water discharged from the upper outlet ports 84b and 84d is less than the amount of water discharged from the lower outlet ports 84a and 84c.

To compensate for the difference in the amount of water discharged between the upper and lower outlet ports 84a, 84b, 84c and 84d, the present embodiment is implemented such that the flow cross-sectional area DA2 of each of the upper outlet ports 84b and 84d is greater than the cross-sectional area DA1 of each of the lower outlet ports 84a and 84c. Preferably PB * DA1 = PC * DA2. Moreover, preferably

DA1> DA2> DA3.

Meanwhile, the distribution tube 80 is disposed between the outer peripheral surface of the pad body 63 and the balance bar 90. More specifically, as shown in FIG. 10, at least a portion of the wand 80 may be disposed in a recessed portion formed on the outer peripheral surface of the liner body 63. To match the first pipeline portion 80a and the second pipeline portion 80b, a recessed portion 67 may be formed on both sides of the gasket body 63 (see 67 (a) in FIGS. 5 and 67 (2) in FIG. 7).

One end of the circulation tube 86 may be connected to an inlet protruding from the bottom of the distribution tube 80, and the other end of the circulation tube 86 is connected to the outlet 84 of the pump 901. If the outlet 84 of the pump 901 is located in a position facing the inlet 81 on straight line, the circulation tube 86 may be in the form of a straight tube. However, in other cases, the circulation tube 86 may be curved.

The circulation tube 86 may be formed from a substance that is flexible and shape-retaining. In an embodiment of the present invention, the circulation tube 86 may be made of ethylene propylene diene monomer rubber (EPDM).

The recessed portion 67 may be formed on the outer peripheral surface of the napkin body 63, and at least a portion 80a and 80b of the transport conduit may be installed in the recessed portion 67. The recessed portion 67 may be formed such that a portion of the outer peripheral surface 61 of the body 63 gaskets were recessed inside. Specifically, a relatively outwardly raised portion may be formed on the outer peripheral surface 61 of the liner body 63, and a recessed portion 67 may be formed in the raised portion.

The tub 30 vibrates as the drum rotates, and the pad 60 formed of a flexible material can be folded or unfolded by the vibration of the tub 30, and accordingly, the pad 60 can vibrate.

Since the casing 10 and the tank 30 are considered rigid, the deformation of the gasket 60 in the area connected to the casing 10 or the tank 30 is negligible. Accordingly, the recessed portion 67 is formed at a location adjacent to the tank connection portion 62 rather than the casing connection portion 61 (see FIG. 10) to prevent the recessed portion 67 from being overly deformed and to ensure a stable installation of the transport pipe 80 in the recessed portion 67. In this regard, it is preferable that the recessed portion 67 is formed in the outer peripheral portion 632.

The recessed portion 67 may extend around the periphery of the pad body 63 in the circumferential direction. The recessed portion 67 may include a bottom surface 67a defining the bottom of the groove and a side surface 67b extending from the bottom surface 67a to an outer side of the radial direction to form the side surface of the groove. The recessed portion 67 may have an open rear surface facing the tub 30, and the front surface of the recessed portion 67 may be defined by a side surface 67b.

The transport conduit 80a and 80b may have a cross-section in which the height defined in the radial direction is less than the width defined in the length direction of the pad 60 (or the front-back direction of the washing machine). That is, the transport pipe 80a and 80b may have a cross-section in which the width corresponding to the bottom surface 67a of the recessed portion 67 is greater than the height corresponding to the side surface 67b of the recessed portion 67. For example, the cross-section of the transport pipe 80a and 80b can be approximately rectangular. shape, in which case the long edge of the rectangle is the above-mentioned width and the short edge of the rectangle is the above-mentioned height.

In the external appearance of the transport pipe 80, its height corresponds to the gap between the spacer 60 and the balance bar 90. Accordingly, the above described appearance having a height less than the width allows the transport pipeline 80 to be installed in a narrow space between the spacer 60 and the balance bar 90.

To accommodate the placement of the transport pipe 80a and 80b in the recessed portion 67, the width of the bottom surface 63a of the recessed portion 67 may be equal to or greater than the width of the transport pipe 80.

The recessed portion 67 may be U-shaped like the transfer conduit 80. Both upper ends of the U-shaped may extend upwardly over both upper ends of the transfer conduit 80 (i.e., the upper end of the first conduit portion 80a and the upper end of the second conduit portion 80b) ... In other words, the recessed portion 67 can extend on both sides from the bottom of the napkin 60 in a peripheral direction. One side of the recessed portion 67 extends further over the upper end of the first pipeline portion 80a, and the other side of the recessed portion 67 may extend further over the upper end of the second pipeline portion 80b.

Alternatively, the recessed portions 67 may be formed respectively on the left and right sides with respect to the reference line L. In this case, the recessed portions 67 on both sides are separated. At least a portion of the first pipeline portion 80a may be installed in a recessed portion formed on the left side, and at least a portion of the second pipeline portion 80b may be installed in a recessed portion formed on the right side.

Preferably, a horizontal line through the center O of the pad 60 passes through the recessed portions 67 formed on the left and right sides of the pad 60. The casing 10 is cube-shaped, which is longer in the left-right direction than in the up-down direction. In this case, the gap between the tub 30 and the casing 10 is smaller in the left-right direction than in the top-bottom direction of the tub 30. Accordingly, the recessed portions are located in a position in which the gap between the casing 10 and the tub 30 is narrowest and through which horizontal line. Therefore, the first and second portions 80 (a) and 80 (b) of the pipeline can be separated as much as possible.

FIG. 21 and 22 are partial views illustrating a case where the distribution pipe is mounted on the gasket, views which show, in particular, the residual water outlet and the residual water collection passage formed in the gasket.

FIG. 21 and 22, a residual water drain hole 69h may be formed in the pad 60 for draining water remaining on the inner peripheral surface of the pad body 63 (hereinafter referred to as "residual water").

The residual water drain hole 69h may be connected to the outside of the washing machine or pump 901 through a predetermined pipe. In the latter case, the residual water drain hole 69h can drain through the drain pipe 74 when the second impeller rotates.

However, aspects of the present invention are not limited to this, and residual water can be collected in the tank 30 by connecting the residual water drain 69h to the tank 30, and this will be described in more detail below.

The tank 30 may be provided with an opening 39h for collecting residual water. A residual water collection hole 39h may be formed on the front surface 31 of the tank 30. A residual water collection tube 100 may be provided to allow the residual water collection hole 39h and the residual water drain 69h to communicate with each other.

The hole 39h for collecting the residual water is located below the drain hole 69h for the residual water. Accordingly, the residual water collected on the inner peripheral surface of the napkin body 63 can naturally drain into the residual water collecting hole 39h through the residual water collecting tube 100.

On the outer peripheral surface 61 of the gasket body 63, a drainage passage 69 communicating with the residual water drainage hole 69h may protrude downwardly. On the front surface 31 of the tub 30, the residual water collecting channel 39 communicating with the residual water collecting hole 39h may protrude forward.

The residual water drainage channel 69 may be connected to the upper end of the residual water collection tube 100, and the residual water collection channel 39 may be connected to the lower end of the residual water collection tube 100. In particular, both ends of the residual water collection tube 100 can be inserted into the residual water drainage channel 69 and the residual water collection channel 39. In this case, both ends of the residual water collection tube 100, closing the residual water drainage channel 69 and the residual water collection channel 39, can be screwed on with clamps to fix the residual water collection tube 100.

The inlet 81 of the wand 801 is located on one side of the residual water drain 69. Viewed from the front, the inlet 81 and the residual water drainage passage 69 are located in areas that do not overlap each other, and therefore, it can be prevented from colliding with the inlet 81 when installing the residual water collection tube 100.

Meanwhile, the residual water drainage passage 69 may be disposed between the lower end of the first rocker 90a and the lower end of the second rocker 90b. The inlet 81 may be located between the residual water drain 69 and the first balancer 90a or between the residual water drain 69 and the second balance 90b.

To easily drain the circulating water exiting the outlet 84 or sprayed from the nozzles 66 remaining on the inner peripheral surface of the gasket 60, the residual water drain 69 may be located lower than the outlet 84a and 84c, at the lowest position among the plurality of outlets. channels 84a, 84b, 84c and 84d and / or the lowest nozzles 65a and 65c.

Seen from the front, the center portion on the underside of the spacer 60 coinciding with the reference line L may be the lowest point. A drainage channel 69 for residual water may be formed in the central part of the lower side.

The distribution pipe 80 can be located on the peripheral surface 61 of the gasket body 63 so as to be adjacent to the tank 30, and the drainage passage 69 for residual water can be located on the front side further than the transport pipe 80a and 80b so as to avoid collision with the distribution pipe. tube 80.

The opening 39h for collecting residual water or the channel 39 for collecting residual water may be formed on the lower side further than the transport pipe 80a and 80b. The tube 100 for collecting residual water may be located in front of the tube 80 of the circulating water to connect the drain channel 69 for residual water and the channel 39 for collecting residual water.

Meanwhile, in the case where the residual water drainage passage 69 is located at the center of the lower side of the pad body 63 and the residual water collection passage 39h is located vertically below the residual water drainage passage 69, the residual water collection tube 100 may be seen from the front, along a vertical line. In this case, in order to avoid collision with the residual water collection tube 100, the inlet 81 must be located at a predetermined distance from the residual water drain 69 to the side (for example, to the right side).

The farther the inlet 81 is from the central portion, the more difficult it is to evenly divide the water into the first pipe portion 80a and the second pipe portion 80b. In view of the above, the residual water collection channel 39 may not be aligned with the vertical line through the center portion, but may be located on one side (for example, the left side) of the residual water drain channel 69 to accommodate the inlet 81 in position as close to the vertical line as possible.

Meanwhile, a residual water drainage passage 69 may be formed in the liner body 63. The drainage passage 69 for residual water can protrude from the lower part of the outer peripheral surface of the napkin body 63. The residual water drain 69 may preferably protrude from the outer peripheral portion 632. However, aspects of the present invention are not limited to this, and the residual water drain 69 may protrude from the inner peripheral 631.

Although some embodiments have been described above, it should be understood that the present invention is not limited to these embodiments, and that various modifications, changes, alterations and variations can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, it should be understood that the above embodiments are provided for illustration only and should in no way be construed as limiting the present invention.

Claims (57)

1. A washing machine containing: a casing (10) having an inlet (12) formed on the front surface of the casing; a tub (30) provided in the case for containing wash water and having an inlet (31h) formed on the front surface of the tub; drum (40) installed in the tub with the possibility of rotation; a gasket (60) having a gasket body (63) defining a channel connecting an inlet (12) of the casing and an inlet (31h) of the tub, and a plurality of nozzles (65) spraying water for washing into the drum, the body of the pad being separated from two sides to the first region and the second region, and the plurality of nozzles includes a first nozzle (65a) and a second nozzle (65b) located in the first region sequentially in the upward direction, and a third nozzle (65c) and a fourth nozzle (65d) located in the second region sequentially from bottom to top; a pump (901) configured to pump wash water discharged from the tub; a circulation pipe (86) for guiding the wash water discharged from the pump; and a distribution pipe (801) for distributing the wash water directed through the circulation pipe to the first, second, third and fourth nozzles, the distribution tube (801) contains: an inlet (81) connected to the circulation pipe; the first part (80a) of the conduit located in the first region on the outer peripheral surface of the napkin body to guide the wash water supplied through the inlet (81); a first outlet (84a) and a second outlet (84b) disposed on the first pipe portion (80a) sequentially from bottom to top to supply wash water directed along the first pipe portion (80a) to the first and second nozzles (65a , 65b), wherein the first and second outlet channels (84a, 84b) run parallel from the first portion (80a) of the conduit to the outer peripheral surface of the pad body; a second conduit portion (80b) disposed in a second region on the outer peripheral surface of the napkin body to guide wash water supplied through the inlet (81); and a third outlet (84c) and a fourth outlet (84d) located on the second pipe portion (80b) in series from bottom to top to supply wash water directed along the second pipe portion (80b) to the third and fourth nozzles (65c, 65d), with the third and fourth outlet channels (84c, 84d) running parallel from the second part (80b) of the conduit to the outer peripheral surface of the liner body. 2. The washing machine of claim 1, wherein the first, second, third and fourth outlet channels (84a, 84b, 84c, 84d) run in parallel. 3. Washing machine according to claim 1 or 2, in which the first and third outlet ports (84a, 84c) are located below half the height of the pad body, and the second and fourth outlet channels (84b, 84d) are located above half the height of the pad body. 4. A washing machine according to any one of the preceding claims, wherein the first outlet (84a) is located at a height equal to that of the third outlet (84c), and the second outlet (84b) is located at a height equal to that of the fourth outlet (84d). 5. A washing machine according to any one of the preceding claims, wherein the outlet of the first outlet (84a) is located farther from the liner body than the outlet of the second outlet (84b). 6. A washing machine according to any one of the preceding claims, wherein the first and second portions (80a, 80b) of the conduit comprise, respectively, first and second flat surfaces (860a, 860c) on their inner periphery, which is opposite the body (63) of the pad, and the first and third outlet channels (84a, 84c) project respectively from the first and second flat surfaces (860a, 860c), preferably in the orthogonal direction. 7. A washing machine according to any one of the preceding claims, wherein the first outlet (84a) and third outlet (84c) are symmetrically disposed about a reference line (L) that divides the body (63) of the pad in two. 8. A washing machine according to claim 7, wherein the second outlet (84b) and the fourth outlet (84d) are arranged symmetrically with respect to a reference line (L) that divides the body (63) of the pad in two. 9. A washing machine according to any one of the preceding claims, wherein the flow cross-sectional area (DA2) of the second and fourth outlet ports (84b, 84d) is respectively larger than the flow cross-sectional area (DA1) of the first and third outlet ports (84a, 84c) ... 10. A washing machine according to any one of the preceding claims, wherein the spacer (60) further comprises a plurality of receiving tubes (64a, 64b, 64c, 64d) for channels that protrude from the outer peripheral surface of the body (63) of the spacer for insertion, respectively, into the first, second, third and fourth nozzles (65a, 65b , 65c, 65d), and a plurality of receiving tubes (64a, 64b, 64c, 64d) for the channels are in communication, respectively, with the first, second, third and fourth nozzles (65a, 65b, 65c, 65d). 11. The washing machine of claim 10, wherein the distribution tube (801) further comprises a press-fit protrusion (869) that projects from the outer peripheral surface of at least one outlet channel from the first, second, third and fourth outlet channels (84a, 84b , 84c, 84d) to extend circumferentially and press against the inner peripheral surface of the receiving tube (64a, 64b, 64c, 64d) for the channel corresponding to the at least one outlet channel. 12. A washing machine according to claim 11, wherein a plurality of pressed-in protrusions (869) are provided in the direction of the length of the at least one outlet duct. 13. A washing machine according to claim 11 or 12, wherein the pressed-in protrusion (869) is inclined in a direction in which the at least one outlet channel is inserted into the receiving tube for the corresponding channel. 14. A washing machine according to any one of the preceding claims, wherein the distribution tube (801) further comprises an end protrusion (842) protruding from the end of the outer peripheral surface of at least one outlet channel from the first, second, third and fourth outlet channels (84a, 84b, 84c, 84d) to pass the inlet of the nozzle corresponding at least one outlet, and insertion into the outlet of the corresponding nozzle, the diameter of the corresponding nozzle decreases from inlet to outlet. 15. Washing machine containing: a casing (10) having an inlet (12) formed on the front surface of the casing; a tub (30) provided in the case for containing wash water and having an inlet (31h) formed on the front surface of the tub; drum (40) installed in the tub with the possibility of rotation; a gasket (60) having a gasket body (63) defining a channel connecting an inlet (12) of the casing and an inlet (31h) of the tub, and a plurality of nozzles (65) spraying water for washing into the drum, the pad body being separated from two sides to a first region and a second region, the plurality of nozzles including a first nozzle (65a) and a second nozzle (65b) disposed in the first region sequentially from bottom to top; a pump (902) configured to pump wash water discharged from the tub; a first circulation pipe for guiding wash water discharged from the pump; and a first distribution pipe (802) for distributing wash water directed through the circulation pipe to the first and second nozzles, wherein the first distribution tube (802) contains: a first inlet (81a) connected to the first circulation pipe; a first conduit portion disposed in a first region on the outer peripheral surface of the napkin body to guide upward wash water supplied through the first inlet (81a); a first outlet (84a) and a second outlet (84b), disposed on the first portion of the conduit sequentially from bottom to top, for supplying wash water directed along the first portion of the conduit to the first and second nozzles (65a, 65b), while the first and second outlet channels (84a, 84b) run parallel from the first portion of the conduit to the outer peripheral surface of the liner body. 16. Washing machine according to claim 15, in which the plurality of nozzles further comprises a third nozzle and a fourth nozzle (65c, 65d) disposed in the second region sequentially from bottom to top, the washing machine additionally contains: a second circulation pipe for guiding wash water discharged from the pump; and a second distribution pipe (803) for distributing wash water directed through the second circulation pipe to the third and fourth nozzles, wherein the second distribution tube (803) contains: a second inlet (81b) connected to the second circulation pipe; a second conduit portion disposed in a second region on the outer peripheral surface of the napkin body to guide upward wash water supplied through the second inlet (81b); and a third outlet (84c) and a fourth outlet (84d), disposed on the second part of the conduit sequentially from bottom to top, for supplying wash water directed along the second part of the conduit to the third and fourth nozzles (65c, 65d), while the third and fourth outlet channels (84c, 84d) run parallel from the second portion of the conduit to the outer peripheral surface of the napkin body.

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