KR20200001525A - Washing machine - Google Patents

Abstract

The present invention relates to a washing machine. According to the present invention, the washing machine includes: a casing having an inlet on the front surface; a tub installed in the casing and accommodating washing water, wherein the tub has an entrance on the front; a drum installed in the tub to rotate; a gasket; multiple discharge ports; and a pump. The gasket includes: a gasket body forming a path connecting the entrance of the tub and the inlet; multiple nozzles spraying the washing water into the drum by being installed on the inner circumference of the gasket body; and multiple port insertion pipes individually connected to the multiple nozzles and protruding from the outer circumference of the gasket body. The multiple discharge ports are individually inserted into the multiple port insertion pipes. The pump pumps the washing water discharged from the tub to the multiple discharge ports. The multiple port insertion pipes include: first and second port insertion pipes vertically installed in a first area among the first area and a second area to which the gasket body is horizontally divided into; and third and fourth port insertion pipes vertically arranged in the second area and parallel with each other. The purpose of the present invention is to provide the washing machine including multiple nozzles spraying circulation water into the drum, wherein the multiple nozzles are installed in the gasket body.

Description

Washing machine

The present invention relates to a washing machine, and more particularly to a washing machine provided with a gasket nozzle for injecting circulating water into the drum.

Korean Laid-Open Patent Publication No. 10-2018-0131894 (hereinafter referred to as 'prior art') discloses a washing machine having a nozzle for injecting circulating water fed by a pump into a drum. The washing machine includes a plurality of nozzles along an inner circumferential surface of a gasket interposed between a casing forming an exterior and a tub containing water, and a plurality of port insertion pipes protruding from the outer circumferential surface of the gasket communicate with the nozzles, respectively. do.

A guide tube for guiding the water (circulated water) pumped by the pump is provided, and the plurality of discharge ports protruding from the annular flow path are respectively inserted into the plurality of port insertion tubes.

Each of the port insertion pipes protrudes substantially radially outward from the outer circumferential surface of the gasket, and correspondingly, each of the discharge ports also protrudes radially inwardly from the annular flow path.

As described above, the gasket having a radially extending port insertion tube has a problem in that the mold structure is complicated because the mold must be moved in a direction in which each port insertion tube extends.

In addition, since the discharge ports are inserted in the port insertion pipes in different directions, there is a problem in that two or more nozzle feed pods cannot be assembled to two or more port insertion pipes simultaneously.

The problem to be solved by the present invention is, first, to provide a washing machine having a plurality of nozzles in the gasket for injecting the circulating water into the drum, to provide a washing machine having a structure that the gasket can be easily molded in an injection method will be.

Second, to provide a washing machine having two or more nozzles on each of the left and right sides of the gasket, and port insertion pipes fixing the water supply ports for supplying the circulating water to the nozzle.

Third, to provide a washing machine in which the port insertion pipes are arranged in parallel with each other.

Fourth, to provide a washing machine that can be easily assembled to the gasket distribution pipes for supplying the circulation water to the nozzles.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In the washing machine of the present invention, the washing water discharged from the tub containing the rotating drum and pumped by the pump is supplied to the plurality of nozzles arranged in the gasket by the plurality of discharge ports.

The gasket includes a gasket body forming a passage connecting the inlet formed in the casing with the inlet of the tub, and the plurality of nozzles are provided on an inner circumferential surface of the gasket body. The gasket further includes a plurality of port insertion pipes which protrude from an outer circumferential surface of the gasket body and communicate with the plurality of nozzles, respectively.

The plurality of discharge ports protrude from the outer circumferential surface of the gasket body and are respectively inserted into the plurality of port insertion pipes.

The plurality of port insertion tubes includes first and second port insertion tubes disposed vertically and parallel to the first region among the first and second regions in which the gasket body is distributed left and right.

The gasket may include third and fourth port insertion tubes disposed vertically and parallel to each other in the second region.

The first and second port insertion pipes may extend horizontally in a first direction. The first port insertion tube may be located above the middle height of the gasket, and the second port insertion tube may be located below the middle height of the gasket.

The third and fourth port insertion pipes may extend horizontally in a direction opposite to the first direction. The third port insertion tube may be positioned at the same height as the first port insertion tube, and the fourth port insertion tube may be positioned at the same height as the second port insertion tube.

The gasket may include a casing coupling portion coupled to the circumference of the inlet, a tub coupling portion coupled to the circumference of the tub inlet, and a gasket body extending from the casing coupling portion to the tub coupling portion.

The first to fourth port insertion pipes may protrude from the outer circumferential surface of the gasket body.

The gasket body may include a rim portion extending from the casing coupling portion to the tub coupling portion, an inner diameter portion extending from the rim portion to the casing coupling portion side, and an outer diameter portion extending from the inner diameter portion to the tub coupling portion. .

The first to fourth port insertion pipes may protrude from the outer circumferential surface of the outer diameter portion.

The length of the second port insertion tube may be longer than the first port insertion tube. The first port insertion tube is positioned upward by a first distance from a middle height point of the gasket body, and the second port insertion tube is a second distance smaller than the first distance from a middle height bottom of the gasket body. It can be located below.

 The length of the fourth port insertion tube may be shorter than the third port insertion tube. The third port insertion tube is positioned upward by a first distance from a middle height point of the gasket body, and the fourth port insertion tube is a second distance smaller than the first distance from a middle height bottom of the gasket body. It can be located below.

The first and second port insertion pipes and the third and fourth port insertion pipes may be symmetrically disposed.

A circulation pipe for guiding the washing water discharged from the pump and a distribution pipe fixed to the gasket to supply the washing water guided through the circulation pipe to the plurality of nozzles may be further included.

The distribution pipe may include an inlet port connected to the circulation pipe, and a first pipe part and a second pipe part for branching the wash water supplied through the inlet port.

The plurality of discharge ports may include first and second discharge ports disposed on the first conduit and inserted into the first and second port insertion pipes, respectively, and disposed on the second conduit and the third and fourth. And third and fourth discharge ports respectively inserted into the port insertion tube.

First and second circulation pipes for guiding the washing water discharged from the pump, first distribution pipes disposed in the first area and guiding the washing water supplied through the first circulation pipe, and in the second area. It may include a second distribution pipe disposed to guide the wash water supplied through the second circulation pipe.

The plurality of discharge ports may include first and second discharge ports disposed in the first distribution pipe and inserted into the first and second port insertion pipes, respectively, and the third and fourth ports inserted into the second distribution pipe. And third and fourth discharge ports respectively inserted into the pipe.

The washing machine according to the present invention has one or more of the following effects.

First, in the washing machine of the present invention, since two or more port insertion pipes formed integrally with the gasket are arranged in parallel with each other, even if the two or more nozzles are injected using one moving mold, the opening or demoulding operation can be performed smoothly. .

Secondly, when viewed from the front, at least one port insertion tube is formed parallel to each other in any one of the first and second regions dividing the gasket, so that when the gasket is installed, By discharging the discharge ports in substantially the same direction, the discharge ports can be inserted into the port insertion pipes at the same time, thereby improving assembly.

In particular, the distribution pipe has a first conduit portion and a second conduit branch branched from the circulating water connection port, and at least one discharge port is formed at each one of the first conduit portion and the second conduit portion, In the case where two or more discharge ports respectively extend in the radial direction, and correspondingly, the two or more port insertion pipes also extend in the radial direction, respectively, the direction of insertion between the discharge ports is different so that the discharge ports are simultaneously inserted into the port insertion pipe. Although not easy to insert into the field, the present invention solved this problem by arranging the port insertion tubes (or discharge ports) in parallel with each other.

1 is a perspective view showing a washing machine according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating the inside of the washing machine shown in FIG. 1.
3 is a perspective view illustrating a part of the washing machine shown in FIG. 2.
4 is a right side cross-sectional view of the washing machine shown in FIG. 2.
5 is a perspective view of the pump shown in FIG. 2.
FIG. 6A is a cross-sectional view of the circulating water chamber of the pump illustrated in FIG. 5.
FIG. 6B is a cross-sectional view illustrating the drainage chamber of the pump shown in FIG. 5.
FIG. 7 is a perspective view illustrating a coupling state of the gasket and the distribution tube illustrated in FIG. 3.
8 is a front view of FIG. 7.
9 is a right side view of the gasket shown in FIG. 7.
FIG. 10 is a rear view of the gasket shown in FIG. 7. FIG.
FIG. 11 is a front view of the distribution pipe shown in FIG. 7. FIG.
12 is a right side view of FIG. 11.
13 is a plan view of an injection molding machine for manufacturing a gasket according to an embodiment of the present invention.
14 is a cross-sectional view showing a coupling structure of the distribution pipe and the nozzle shown in FIG.
FIG. 15 is a cross-sectional view taken along line II-II 'of FIG. 8.
FIG. 16 is a cross-sectional view taken along line III-III ′ of FIG. 8.
FIG. 17 shows the assembly of the gasket and the distribution tube, in particular the position of the nozzles and the spray width of the nozzle.
18 shows a pump according to another embodiment of the present invention.
19 shows a distribution tube according to another embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

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

1 is a perspective view showing a washing machine according to an embodiment of the present invention. 2 is a perspective view illustrating the inside of the washing machine shown in FIG. 1. 3 is a perspective view illustrating a part of the washing machine shown in FIG. 2. 4 is a right side cross-sectional view of the washing machine shown in FIG. 2. 5 is a perspective view of the pump shown in FIG. 2. FIG. 6A is a cross-sectional view illustrating a circulating water chamber of the pump illustrated in FIG. 5, and FIG. 6B is a cross-sectional view illustrating a drain chamber of the pump illustrated in FIG. 5.

1 to 6, the casing 10 forms an appearance of a washing machine, and an inlet 12h through which laundry is introduced is formed on the front surface of the casing 10. The casing 10 may include a cabinet 11 having an open front face, a cabinet 11 having a left face, a right face, and a rear face, and a front panel 12 coupled to an open front face of the cabinet 11 and having an inlet 12h formed therein. Can be. The bottom and top surfaces of the cabinet 11 are open, and a horizontal base 15 supporting the washing machine may be coupled to the bottom surface. In addition, the casing 10 may further include a top plate 13 covering an open top surface of the cabinet 11 and a control panel 14 disposed above the front panel 12.

A tub 31 containing water may be disposed in the casing 10. Tub 31 is formed with an inlet (or tub inlet 31h) in the front so that laundry can be put. The cabinet 11 and the tub 31 may be connected by an annular gasket 60.

The door 20 that opens and closes the inlet 12h may be rotatably coupled to the casing 10. The door 20 may include a door frame 21 having an approximately central portion opening, rotatably coupled to the front panel 12, and a transparent window 22 installed at an open central portion of the door frame 21. have. The window 22 may be convex in the rear, and at least a portion thereof may be located in an area surrounded by the inner circumferential surface of the gasket 60.

The gasket 60 is for preventing the water contained in the tub 31 from leaking. The gasket 60 may extend from the annular front end to the annular rear end to form a tubular passage connecting the inlet 12h and the tub inlet 31h. The front end portion of the gasket 60 may be fixed to the front panel 12 of the casing 10, and the rear end portion thereof may be fixed around the tub inlet 31h of the tub 31.

The gasket 60 may be made of a flexible or elastic material. The gasket 60 may be formed of natural rubber or synthetic resin. The gasket 60 may be formed of a flexible material such as rubber. The gasket 60 may be made of EPDM (Ethylene Propylene Diene Monomer), TPE (Thermo Plastic Elastomer), or the like. Hereinafter, the part which defines the inner side of the tubular form of the gasket 60 is called the inner peripheral part (or inner peripheral surface) of the gasket 60, and the opposite part is called the outer peripheral part (or outer surface) of the gasket 60. .

The tub 31 may be rotatably provided with a drum 32 in which laundry is accommodated. A plurality of through holes 32h may be formed in the drum 32 so that water in the tub 31 may flow into the drum 32.

The drum 32 is disposed so that the entrance to which the laundry is input is located at the front side, and is rotated about an approximately horizontal rotation center line C. However, the term "horizontal" is not a term used in a mathematically exact sense. That is, as in the embodiment, when the rotation centerline C is inclined at a predetermined angle with respect to the horizontal, it may be said to be substantially horizontal because it is closer to the horizontal than the vertical.

A plurality of lifters 34 may be provided on the inner surface of the drum 32. The plurality of lifters 34 may be disposed at an angle with respect to the center of the drum 32. When the drum 32 is rotated, the laundry is lifted by the lifter 34 and then dropped.

A driving unit 38 for rotating the drum 32 may be further provided, and the driving shaft 38a rotated by the driving unit 38 may be coupled to the drum 32 by passing through the rear portion of the tub 31. .

Preferably, the drive unit 38 includes a direct type washing motor, and the washing motor includes a stator fixed to the rear of the tub 31 and a rotor rotated by a magnetic force acting between the stator. It may include. The drive shaft 38a can be integrally rotated with the rotor.

The tub 31 may be supported by the damper 16 installed in the base 15. Vibration of the tub 31 caused when the drum 32 rotates is attenuated by the damper 16. Although not shown, according to an embodiment, the tub 31 may be further rinsed (eg, a spring) to be suspended in the casing 10.

At least one water supply hose (not shown) for guiding water supplied from an external water source such as a faucet to the tub 31, and at least one water supply pipe 34a to which water supplied through the at least one water supply hose is described later. , 34b and 34c may be provided with a water supply 33 to control the supply.

A dispenser 35 may be provided to supply additives such as detergents and fabric softeners into the tub 31 or the drum 32. In the dispenser 35, additives may be classified and accommodated according to their types. The dispenser 35 may include a detergent accommodating part (not shown) for accommodating detergent and a softener accommodating part (not shown) for accommodating a fabric softener.

At least one water supply pipe 34a, 34b, 34c may be provided to selectively guide the water supplied through the water supply 33 to each receiving portion of the dispenser 35. The water supply unit 33 may include at least one water supply valve (not shown) which intermittently controls at least one water supply pipe 34a, 34b, 34c.

At least one water supply pipe (34a, 34b, 34c), the first water supply pipe 34a for supplying the cold water supplied through the cold water supply hose to the detergent receiving portion, and the cold water supplied through the cold water supply hose to the fiber It may include a second water supply pipe (34b) for supplying water to the softener receiving portion, and a third water supply pipe (34c) for supplying hot water supplied through the hot water supply hose to the detergent receiving portion.

The gasket 60 may be provided with a direct nozzle 42 for injecting water into the drum 32, and a direct supply pipe 39 for guiding water supplied through the water supply 33 to the direct nozzle 42 is provided. It may be provided. The direct nozzle 42 may be a vortex nozzle or a spray nozzle, but is not necessarily limited thereto. When viewed from the front, the direct nozzle 42 may be located vertically above the rotation center line (C).

Water discharged from the dispenser 35 is supplied to the tub 31 through the water supply bellows 37. A water supply port (not shown) connected to the water supply bellows 37 may be formed at a side surface of the tub 31.

Tub 31 is formed with a drain for discharging water, the drainage bellows 17 may be connected to the drain. Through the draining bellows 17, a pump 901 for pumping the water discharged from the tub 31 may be provided. A drain valve 96 for regulating the drainage bellows 17 may be further provided.

The pump 901 may selectively perform a function of pumping the water discharged through the drainage bellows 17 into the drain pipe 19 and a function of pumping the water into the circulation pipe 18. Hereinafter, the water pumped by the pump 901 and guided along the circulation pipe 18 is called circulating water.

5 to 6, the pump 901 includes a pump housing 91, a first pump motor 92, a first impeller 915, a second pump motor 93, and a second impeller 917. It may include.

Inlet port 911, circulation port 912, and drain port 913 may be formed in the pump housing 91. In the pump housing 91, a first chamber 914 for accommodating the first impeller 915 and a second chamber 916 for accommodating the second impeller 917 may be formed. The first impeller 915 is rotated by the first pump motor 92, and the second impeller 917 is rotated by the second pump motor 93.

The first chamber 914 and the circulation port 912 form a volute-shaped flow path wound in the rotational direction of the first impeller 915, and the second chamber 916 and the drain port 913 are A flow path in the form of a volute wound in the rotational direction of the second impeller 917 is formed. Here, the rotation direction of each impeller 915, 917 is predetermined as it is controllable.

The inlet port 911 is connected to the drainage bellows 17, and the first chamber 914 and the second chamber 916 communicate with the inlet port 911. Water discharged from the tub 31 through the drainage bellows 17 is supplied to the first chamber 914 and the second chamber 916 through the inlet port 911.

The first chamber 914 is in communication with the circulation port 912, and the second chamber 916 is in communication with the drain port 913. Accordingly, when the first pump motor 92 is operated to rotate the first impeller 915, water in the first chamber 914 is discharged through the circulation port 912. When the second pump motor 93 is operated, the second impeller 917 is rotated so that the water in the second chamber 916 is discharged through the drain port 913. The circulation port 912 is connected to the circulation pipe 18, and the drain port 913 is connected to the drain pipe 19.

The pump 901 is capable of varying the flow rate (or discharge water pressure). To this end, the pump motors 92 and 93 may be variable speed motors capable of controlling the rotation speed. Each pump motor 92, 93 is a brushless direct current motor (BLDC) motor, but is not necessarily limited thereto. A driver for speed control of the pump motors 92 and 93 may be further provided, and the driver may be an inverter driver. The inverter driver converts AC power to DC power and inputs it to the motor at a target frequency.

A control unit (not shown) for controlling the pump motors 92 and 93 may be further provided. The controller may include a proportional-integral controller (PI controller), a proportional-integral-derivative controller (PID controller), and the like. The controller may receive an output value (for example, an output current) of the pump motor as an input and control the output value of the driver so that the rotation speed of the pump motor follows a preset target rotation speed based on the input value.

The controller may control not only the rotation speeds of the pump motors 92 and 93 but also the rotation direction. In particular, since the motor applied to the conventional pump is unable to control the rotation direction at the start, it is difficult to control the rotation of each impeller in a predetermined direction as shown in Figure 6, the discharge port ( There was a problem that the flow rates discharged from 912 and 913 are different. However, since the present invention can control the rotational direction at the start of the pump motors 92 and 93, there is no problem as in the prior art, and the flow rate discharged through the discharge ports 912 and 913 is managed constantly. can do.

On the other hand, the control unit can control not only the pump motors 92 and 93, but also the overall operation of the washing machine, and it will be understood that the control of each unit mentioned below is performed by the control of the control unit.

FIG. 7 is a perspective view illustrating a coupling state of the gasket and the distribution tube illustrated in FIG. 3. 8 is a front view of FIG. 7. 9 is a right side view of the gasket shown in FIG. 7. FIG. 10 is a rear view of the gasket shown in FIG. 7. FIG. FIG. 11 is a front view of the distribution pipe shown in FIG. 7. FIG. 12 is a right side view of FIG. 11. 13 is a plan view of an injection molding machine for manufacturing a gasket according to an embodiment of the present invention. 14 is a cross-sectional view showing a coupling structure of the distribution pipe and the nozzle shown in FIG. FIG. 15 is a cross-sectional view taken along line II-II 'of FIG. 8. FIG. 16 is a cross-sectional view taken along line III-III ′ of FIG. 8.

7 to 16, the gasket 60 includes a casing coupling portion 61 coupled around the inlet 12h of the front panel 12, and a tub coupling portion 62 coupled around the tub inlet 31h. ), And a gasket body 63 extending between the casing coupling portion 61 and the tub coupling portion 62.

The front panel 12 has the periphery of the inlet 12h rolled outward, and the casing coupling portion 61 can be fitted into the concave portion formed by the curled portion. The casing coupling portion 61 may be formed with an annular groove 61r in which a wire is wound. After the wire is wound along the groove 61r, both ends of the wire are bound so that the casing coupling portion 61 is firmly fixed around the inlet 12h.

The tub 31 has the inlet circumference rolled outward, and the tub engaging portion 62 is fitted into the concave portion formed by the curled portion. The tub coupling portion 62 may be formed with an annular groove 62r in which a wire is wound. After the wire is wound along the groove 62r, both ends of the wire are bound so that the tub coupling portion 62 is firmly coupled around the inlet of the tub 31.

Meanwhile, the casing coupling portion 61 is fixed to the front panel 12, but the tub coupling portion 62 is displaced according to the movement of the tub 31. Therefore, the gasket body 63 should be deformable in response to the displacement of the tub coupling 62. In order to facilitate this deformation, the gasket 60 is moved by the eccentric tub 31 by the eccentric in the section (or the gasket body 63) between the casing coupling portion 61 and the tub coupling portion 62. It may include a folding portion (63b) is folded in the direction (or radial direction) to be.

 More specifically, referring to FIGS. 14 to 16, the gasket body 63 has a tubular rim 63a extending from the casing coupling portion 61 toward the tub coupling portion 62 (or toward the rear). The folding portion 63b may be formed between the rim portion 63a and the tub coupling portion 62.

The gasket 60 has an outer door tight portion 68 in close contact with the rear surface of the door 20 at the outside of the inlet 12h in a state where the gasket 60 is bent outward from the front end of the rim portion 63a and the door 20 is closed. It may include. The casing coupling portion 61 may be formed with the aforementioned groove 61r in a portion extending from the outer end of the outer door contact portion 68.

The gasket 60 is bent inward from the front end of the rim 63a, and the rear surface of the door 20 (preferably the window 22) and the inside of the inlet 12h with the door 20 closed. It may further include an inner door contact portion 66 in close contact.

On the other hand, the drum 32 is vibrated during the rotation process (that is, the rotation center line C of the drum 32 moves), and thus the center line C of the tub 31 (approximately, the rotation center line C of the drum 32). ), And the movement direction (hereinafter, referred to as "eccentric direction") has a radial component.

Folding portion 63b is folded or unfolded when the tub 31 moves in the eccentric direction. The folding portion 63b is bent from the rim portion 63a to the casing coupling portion 61 side, and is bent from the inner diameter portion 631 to the tub coupling portion 62 to be connected to the tub coupling portion 62. It may include an outer diameter portion 632 to be. When viewed from the front, the inner diameter portion 631 is positioned inside the inner diameter surrounded by the outer diameter portion 632. As shown in FIG. 16, the rim portion 63a and the fold portion 63b may have a cross section having an approximately “S” shape.

If a portion of the fold portion 63b is folded when the center of the tub 31 is moved in the eccentric direction, the portion between the inner diameter portion 631 and the outer diameter portion 632 is reduced therein, while on the opposite side of the folded portion 63b. In the folded portion 63b, the folding portion 63b is opened to open between the inner diameter portion 631 and the outer diameter portion 632.

The rim portion 63a may be provided with a direct nozzle 42 and a steam spray nozzle 47. Referring to FIG. 2, the rim portion 620 may include a direct nozzle port 621 in which the direct nozzle 42 is installed, and a steam spray nozzle port 622 in which the steam spray nozzle 47 is installed. The direct nozzle port 621 and the steam spray nozzle port 820 may be manufactured integrally with the gasket 60.

When viewed from the front, a plurality of port insertion tubes 641, 642, 643, and 644 may be disposed at the left side and / or the right side of the outer diameter part 632. Specifically, when viewed from the front, the gasket body 63 is disposed up and down in the first region (for example, the left region of the reference line L) and parallel to each other among the first and second regions in which the gasket body 63 is distributed left and right. One first and second port insertion pipes 641 and 642 are provided, and are arranged up and down in the second area (for example, the right area of the reference line L) and parallel to each other. 643, 644 are provided.

The port insertion pipes 641, 642, 643, and 644 may protrude outward from the outer diameter part 632. In the embodiment, the port insertion pipes 641, 642, 643, and 644 are disposed at the left side of the outer diameter portion 632 at two left side 641, 642 and at the right side thereof at two 642 and 644. For the sake of clarity, these will be referred to as a first port insertion tube 641, a second port insertion tube 642, a third port insertion tube 643, and a fourth port insertion tube 644, respectively.

Referring to FIG. 8, a plurality of nozzles 650 may be disposed on the inner circumferential surface of the gasket 60. Preferably, the nozzle 650 may be disposed on the inner circumferential surface of the outer diameter portion 632. Four nozzles 650a, 650b, 650c, 650d (see FIG. 17) may be provided to correspond to the four port insertion pipes 641, 642, 643, and 644. Each port insertion tube 641, 642, 643, 644 is in communication with a corresponding nozzle 650a, 650b, 650c, 650d. That is, the hollows formed in the port insertion pipes 641, 642, 643, and 644 communicate with the inlets of the nozzles 650a, 650b, 650c, and 650d.

The second port insertion tube 642 is disposed below the first port insertion tube 641. The first port insertion tube 641 and the second port insertion tube 642 may be disposed in parallel to each other. The first port insertion tube 641 and the second port insertion tube 642 may extend in a horizontal direction (or left and right directions). Hollows respectively formed in the first port insertion tube 641 and the second port insertion tube 642 may also extend horizontally and may be parallel to each other.

Referring to FIG. 10, the length of the second port insertion tube 642 may be shorter than that of the first port insertion tube 641. The first port insertion tube 641 may be located above the middle height point of the gasket body 63 (preferably the height point at which the center O is located) by the first distance d1.

The second port insertion tube 642 is located below the middle height bottom O of the gasket body 63 by a second distance d2, where the second distance d2 is the first distance d1. Is less than (d2 <d1)

Since the shape of the gasket body 63 is close to a circle, the arbitrary point on the outer diameter portion 632 is closer to the upper or lower side from the middle height point O, the arbitrary point is relative from the symmetric reference line L. Far away. Therefore, in the embodiment, the point where the second port insertion tube 642 is connected to the outer diameter portion 632 is farther from the symmetric reference line L than the portion where the first port insertion tube 641 is connected to the outer diameter portion 632. Apart, apparently the second port insertion tube 642 protrudes further from the symmetric reference line L to the right. Accordingly, it is preferable to shorten the length of the second port insertion pipe 642 to secure a space where the distribution pipe 70 can be installed between the gasket body 63 and the cabinet 11. Similarly, the length of the fourth port insertion tube 645 may be shorter than that of the second port insertion tube 643.

The fourth port insertion pipe 644 is disposed below the third port insertion pipe 643. The third port insertion tube 643 and the fourth port insertion tube 644 may be disposed in parallel to each other. The third port insertion tube 643 and the fourth port insertion tube 644 may extend in a horizontal direction (or left and right directions). Hollows respectively formed in the third port insertion tube 643 and the fourth port insertion tube 644 may also extend horizontally and may be parallel to each other.

Referring to FIG. 9, a residual water port 645 may be provided at a lower portion of the outer diameter portion 632 to drain the wash water accumulated in the gasket 60. The remaining water port 645 may protrude downward from the outer circumferential surface of the outer diameter portion 632. Washing water accumulated in the folding portion (63b) can be drained through the remaining water port (645).

Meanwhile, the gasket 60 may be formed using the injection molding machine 800. Specifically, referring to FIG. 13, the injection molding machine 800 includes a fixed mold 850 and movable molds 810, 820, 830, and 840 relatively moved relative to the fixed mold 850. The moving molds 810, 820, 830, and 840 may include a first moving mold 810, a second moving mold 820, a third moving mold 830, and a fourth moving mold 840.

Injection molding machine (not shown) into a cavity formed by the stationary mold 850, the first moving mold 810, the second moving mold 820, the third moving mold 830, and the fourth moving mold 840. Molten resin discharged from

The stationary mold 850 may be disposed in the center, and the first, second, third, and fourth movable molds 810, 820, 830, and 840 may be disposed around the stationary mold 850. When opening, the first moving mold 810 moves forward with respect to the stationary mold 850 (upper side based on FIG. 13), the second moving mold 820 moves to the right, and the third The moving mold 830 is moved rearward (lower side with reference to FIG. 13), and the fourth moving mold 840 is moved leftward.

The direct nozzle port 621 and the steam injection nozzle port 622 disposed on the gasket 60 may be formed by the first moving mold 810. Since the direct nozzle port 621 and the steam spray nozzle port 622 extend in the moving direction of the first moving mold 810, the demolding operation can be performed smoothly.

The residual water port 645 disposed under the gasket 60 may be molded by the third moving mold 830. Since the residual water port 645 extends in the moving direction of the third moving mold 830, the demolding operation may be smoothly performed.

The first port insertion tube 641 and the second port insertion tube 642 disposed on the left side of the gasket 60 may be formed by the fourth moving mold 840. The fourth moving mold 840 is moved to the left side, and the first port insertion tube 641 and the second port insertion tube 642 are in the same direction as the moving direction of the fourth moving mold 840 (that is, the left side). It may protrude.

The first port insertion tube 641 and the second port insertion tube 642 may be disposed in parallel to each other. In other words, the direction in which the first port insertion tube 641 protrudes from the outer circumferential surface of the outer diameter portion 632 and the direction in which the second port insertion tube 642 protrudes from the outer circumferential surface of the outer diameter portion 632 may be the same. .

The third port insertion tube 643 and the fourth port insertion tube 644 disposed on the right side of the gasket 60 may be formed by the second moving mold 820. The second moving mold 820 is moved to the right side, and the third port insertion tube 643 and the fourth port insertion tube 644 are in the same direction as the moving direction of the second moving mold 820 (that is, to the right). It protrudes and is formed.

The third port insertion tube 643 and the fourth port insertion tube 644 may be disposed in parallel to each other. In other words, the direction in which the third port insertion tube 643 protrudes from the outer circumferential surface of the outer diameter portion 632 and the direction in which the fourth port insertion tube 644 protrudes from the outer circumferential surface of the outer diameter portion 632 may be the same. .

The first moving mold 810, the second moving mold 820, the third moving mold 830, and the fourth moving mold 840 move in different directions (or the first moving mold 810 and the third moving mold). Since the moving molds 830 are moved in opposite directions, and the second moving molds 820 and the fourth moving molds 840 are moved in opposite directions.), The upper side, the left side, and the right side of the gasket 60 are moved. And an insertion tube or a port at the lower side, respectively.

The gasket body 63 may be symmetrical with respect to the symmetry reference line L. FIG. The first port insertion tube 641 and the third port insertion tube 643 may be disposed at the same height. The second port insertion tube 642 and the fourth port insertion tube 644 may be disposed at the same height. The first port insertion tube 641 and the third port insertion tube 643 may have a left and right symmetrical structure, that is, a structure symmetrical with respect to the symmetric reference line L. FIG. Similarly, the second port insertion tube 642 and the fourth port insertion tube 644 may also have a symmetrical structure.

On the other hand, referring to Figure 7, the rim portion 63a may be gradually wider (or, the length in the front and rear direction) toward the upper side. In this case, as the width of the inner diameter portion 631 is gradually increased, the outer diameter portion 632 is located further toward the rear toward the upper side, so that the third port insertion tube 643 is shown in FIG. 9. The tub 31 is closer to the tub 31 than the fourth port insertion tube 644, and the first port insertion tube 641 is closer to the tub 31 than the second port insertion tube 642.

[Nozzle]

A plurality of nozzles 650a, 650b, 650c, and 650d for discharging the circulating water into the drum 32 may be provided. The plurality of nozzles 650a, 650b, 650c, and 650d are respectively formed with the first port insertion pipe 641, the second port insertion pipe 642, the third port insertion pipe 643, and the fourth port insertion pipe 644. Connected. Hereinafter, a nozzle that communicates with the first port insertion tube 641 and receives circulating water is referred to as a first nozzle 650a, and a nozzle that communicates with the second port insertion tube 642 and receives circulating water supplies a second nozzle. A nozzle communicating with the third port insertion pipe 643 and receiving circulating water is referred to as 650b, and a nozzle communicating with the fourth port insertion pipe 644 and receiving circulating water is supplied. Is referred to as a fourth nozzle 650d. (See Figure 17.)

As described above, the plurality of port insertion pipes 641, 642, 643, and 644 respectively extend horizontally, and the plurality of discharge ports 761, 762, 763, and 764 described later correspondingly extend horizontally, respectively. Therefore, the supply or guidance of the circulating water by the discharge ports 761, 762, 763, and 764 is made in the horizontal direction.

The nozzles 650a, 650b, 650c, and 650d may be configured to discharge the circulation water supplied in the horizontal direction as described above in a direction forming a predetermined angle with respect to the horizontal. That is, even if the circulating water is supplied in the horizontal direction through each discharge port 761, 762, 763, 764 / port insertion pipes 641, 642, 643, 644, the discharge by each nozzle 650a, 650b, 650c, 650d. The direction may be up or down at an angle with respect to the horizontal.

FIG. 17 shows the assembly of the gasket and the distribution tube, in particular indicating the position of the nozzles and the jetting width of the nozzles. Referring to FIG. 17, as described above, the gasket 60 may be provided with four nozzles 650. Hereinafter, the two nozzles 650a and 650c located on the upper side of the four nozzles 650 will be referred to as the upper nozzles 650a and 650c, respectively. 650a) and the one located on the right side is called the second upper nozzle 650c.

The upper nozzles 650a and 650c are located above the center O of the gasket 60 to inject the circulating water downward. Here, the center O is a predetermined point located on the left and right symmetry reference line L of the gasket 60, preferably, it is located at half of the height H of the gasket 60, but is not necessarily limited thereto. .

When viewed from the front, the first upper nozzle 650a is disposed in the left region of the reference line L, and sprays the circulating water downward to the right region of the reference line L. When viewed from the front, the second upper nozzle 650c is disposed in the right region of the reference line L, and sprays the circulating water downward to the left region of the reference line L.

The first upper nozzle 650a and the second upper nozzle 650c may be configured to have left and right symmetry based on the reference line L, and thus, the first upper nozzle 650a and the second upper nozzle ( The shape of the water stream sprayed through 650c is also symmetrical with respect to the baseline (L).

In addition, the two nozzles located below the upper nozzles 650a and 650c are referred to as the lower nozzles 650b and 650d, and when they are viewed from the front again, they are located on the left side as the first lower nozzle 650b. The one located on the right side is called the second lower nozzle 650d.

When viewed from the front, the first lower nozzle 650b is disposed in the left region of the reference line L, and sprays the circulating water upwards to the right region of the reference line L.

When viewed from the front, the second lower nozzle 650d is disposed in the right region of the reference line L, and sprays the circulating water upwards to the left region of the reference line L.

The first lower nozzle 650b and the second lower nozzle 650d may be configured to have left and right symmetry based on the reference line L, and thus, the first lower nozzle 650b and the second lower nozzle ( The shape of the water stream sprayed through 650d is also symmetrical with respect to the baseline (L).

10, 11, and 14, the nozzle 650a may be formed in the gasket body 63 of the gasket 60, and preferably protrudes from the inner circumferential surface of the outer diameter portion 632. The nozzle 650a may include a nozzle inlet pipe 651 and a nozzle head 652. In detail, the nozzle inlet pipe 651 has a tubular shape and protrudes from the inner circumferential surface of the outer diameter part 632 to be connected to the corresponding nozzle head 652.

10 and 15 to 17, the nozzle head 652 has a collision surface 652a in which water discharged from the discharge port 641 collides, and first side surfaces positioned at both sides of the collision surface 652a. 652b and a second side 652c. The impact surface 652a, the first side surface 652b and the second side surface 652c form a space having a funnel shape, and water discharged from the nozzle inlet pipe 651 collides with the collision surface 652a in the space. It is then discharged through the injection port 657.

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

The angle γ between the first side 652b and the second side 652c is approximately 45 degrees to 55 degrees, preferably 50 degrees, but is not necessarily limited thereto.

When defining the jet width of the stream of water flowing through the nozzle 650 as the jet width angle, the jet width angle may be defined by the first side 652b and the second side 652c. Specifically, the injection width angle may be defined as an angle formed by a first boundary where the collision surface 652a and the first side surface 652b meet and a second boundary where the collision surface 652a and the second side surface 652c meet. Can be.

Referring to FIG. 17, the injection width angle β1 of the upper nozzles 650a and 650c may be smaller than the injection width angle β2 of the lower nozzles 650b and 650d. Since the circulating water supplied to the inflow port 73 is sprayed along the distribution pipe 701, a part of the water is sprayed through the lower nozzles 650b and 650d, and the other is sprayed through the upper nozzles 650a and 650c. The discharge flow rates through the upper nozzles 650a and 650c are smaller than the discharge flow rates through the lower nozzles 650b and 650d. Therefore, by lowering the jetting width of the upper nozzles 650a and 650c than the jetting width of the lower nozzles 650b and 650d (β1 < Water can be discharged from 650a, 650b, 650c, and 650d at substantially uniform water pressure.

The difference (β2-β1) between the injection width angle β2 of the lower nozzles 650b and 650d and the injection width angle β1 of the upper nozzles 650a and 650c is approximately 4 to 6 degrees, preferably 5 degrees. to be. At this time, β1 is approximately 38 to 42 degrees, preferably 40 degrees, β2 is approximately 43 to 47 degrees, and preferably 45 degrees.

Meanwhile, the upper nozzles 650a and 650c have a spraying direction with respect to a line connecting the center O of the upper nozzles 650a and 650c and the gasket 650a (hereinafter, referred to as a 'nozzle arrangement line'). The upward deviation angle can be achieved upward. Here, the injection direction DR of the upper nozzles 650a and 650c is defined along a straight line that divides the angle formed by the first side surface 652b and the second side surface 652c, and the injection direction DR is the nozzle arrangement line. It is going up from (R). The upward deviation angle? May be between 5 and 9 degrees, preferably 7 degrees.

Due to various conditions such as the height, position, and injection width angle β1 of the upper nozzles 650a and 650c, in some cases, the spraying is not performed at sufficient water pressure through the upper nozzles 650a and 650c, and thus the injected water flow May not go straight far. For this reason, the spraying direction of the upper nozzles 650a and 650c is made higher than the nozzle arranging line R by the upward deviation angle? So that the nozzle arranging line (even if the hydraulic pressure of the upper nozzles 650a and 650c is not sufficient) The water flow can reach the region where R) passes, preferably in the form of water flow injected through the upper nozzles 650a and 650c and the water flow injected through the lower nozzles 650b and 650d, as shown in FIG. The shape of can be made to be substantially vertical symmetry.

On the other hand, when the angle from the lowest point of the gasket 60 to the lower nozzles 650b and 650d is α1, the upper nozzles 650a and 650c are between the highest point H of the gasket 60 from the position corresponding to the angle α1. Is disposed in, but may be located above the point corresponding to the angle divided by 180-α1. That is, in FIG. 17, α2 has a larger value than α3. α2-α3 may be 18 to 22, preferably 20 degrees. In this case, α2 may be 63 to 67 degrees, preferably 65 degrees.

On the other hand, the lower nozzles (650b, 650d) may be located at approximately 1/3 point (1 / 3H) of the height (H) of the gasket (60). In this case, α2 is preferably set in a range in which the upper nozzles 650a and 650c are located above 2/3 (2 / 3H) of the height of the gasket 60, and α2 may be 65 degrees.

In order to circulate the circulating water evenly up and down within the drum 32, it is preferable that the upper nozzles 650a and 650c and the lower nozzles 650b and 650d are arranged at equal intervals in the height direction. There is a problem that the water flow injected from the upper nozzles 650a and 650c due to the sag of the water flow actually reaches the lower region than geometrically predicted. Therefore, considering the deflection of the water flow due to gravity, the upper nozzles 650a and 650c need to be disposed more than 2 / 3H.

On the other hand, when the pump 901 is operated to circulate water is injected through the lower nozzles (650b, 650d), it is preferable that the water level in the tub 31 does not exceed 1 / 3H point.

Meanwhile, referring to FIG. 10, when viewed from the front, the injection direction DR1 of the first nozzle 650a is in the longitudinal direction of the first port insertion pipe 641 (or, water flows into the first nozzle 650a). Angle a). Here, the angle a may be 133 to 138 degrees.

Since the first nozzle 650a and the third nozzle 650c are arranged in a symmetrical relationship, the angle formed by the partial fragrance DR3 of the third nozzle 650c with the third port insertion tube 643 is also a.

In addition, when viewed from the front, the injection direction DR2 of the second nozzle 650b is in the longitudinal direction of the second port insertion pipe 642 (or the direction in which water flows into the second nozzle 650b, that is, water supply). Direction b). Here, the angle b may be larger than the angle a.

Since the second nozzle 650b and the fourth nozzle 650d are symmetrically disposed, the angle at which the injection direction DR4 of the fourth nozzle 650d forms the fourth port insertion pipe 644 is also b.

Hereinafter, the structure of the nozzle 650 will be described in more detail with reference to FIGS. 14 to 16. Although the first nozzle 650a is representatively shown in these drawings, the second nozzle 650b, the third nozzle 650c, and the fourth nozzle 650d have substantially the same structure as the first nozzle 650a. Since the first nozzle 650a described below can also be applied to the second to fourth nozzles 650b, 650c, and 650d.

Impingement surface 652a, first side 652b, and second side 652c extend to the outlet 657 (ie, injection port) of nozzle head 652. The impingement surface 652a of the nozzle head 652 may be opposite to the outlet 651b of the nozzle inlet pipe 651 and may be inclined in the depth direction of the drum 32.

Since the nozzle inlet pipe 651 extends horizontally to guide the water in a horizontal direction, the water flow diffuses by the collision surface 652a after the water flow is constantly progressed without being affected by gravity until it reaches the nozzle head 652. The water flow may be sprayed in a predetermined form from the nozzles 650a, 650b, 650c, and 650d.

If the longitudinal direction of the nozzle inlet pipe 651 is disposed toward the center O of the gasket 60 rather than substantially horizontally, water flowing through the nozzle inlet pipe 651 of the upper nozzles 650a and 650c may be used. The gravity is applied in the process of flowing down into the drum 32 faster than the lower nozzle (650b, 650d), the water flowing through the nozzle inlet pipe 651 of the lower nozzle (650b, 650d) is gravity in the process of flowing up Since it is applied and sprayed into the drum 32 slower than the upper nozzles 650a and 650c, it is difficult to keep the spray form of the water sprayed into the drum 32 from the plurality of nozzles 650a, 650b, 650c and 650d constant. In the present embodiment, since the longitudinal direction of the nozzle inlet pipe 651 is disposed substantially horizontally and guides the water in the horizontal direction, the nozzle inlet pipe 651 is guided into the drum 32 from the plurality of nozzles 650a, 650b, 650c, and 650d. The spray form of the water to be sprayed can be kept constant.

Referring to FIG. 14, an area of the inlet 651a of the nozzle inlet pipe 651 may be wider than that of the outlet 651b. The circulating water discharged from the outlet 651b hits the collision surface 652a of the nozzle head 652 and is then injected into the drum 32 through the injection hole 657. The direction that the injection port 657 faces and the longitudinal direction of the nozzle inlet pipe 651 may cross each other.

The gasket 60 may include a protrusion 655 protruding from the inner circumferential surface of the gasket body 63. A plurality of protrusions 655 may be formed along the circumferential direction corresponding to the plurality of nozzles 650a, 650b, 650c, and 650d. The injection holes 657 of each nozzle 650a, 650b, 650c, 650d may be formed in the corresponding protrusion 655 (see FIG. 10).

The nozzle inlet pipe 651 may include a flow path reduction portion 651c whose inner diameter gradually decreases in the flow direction of the water flow. The inner diameter of the flow path reduction portion 651c may become smaller until it reaches the nozzle head 652.

Meanwhile, at least a portion of the distribution pipe 701 may be disposed between the outer circumferential surface of the gasket 60 and the balancers 81 and 82. It may be installed in an existing space (that is, between the outer peripheral surface of the gasket 60 and the balancers 81 and 82) without having to secure a separate space for installing the distribution pipe 701.

The pair of upper nozzles 650a and 650c may be formed above the inflow port 73 and may be disposed on both left and right sides of the inflow port 73. The pair of upper nozzles 650a and 650c are arranged symmetrically with respect to the reference line V passing through the center O (see FIG. 10), and therefore, the spray direction of each of the upper nozzles 650a and 650d is also referred to as the reference line ( It is symmetric about L).

The pair of upper nozzles 650a and 650d may be located above the center O or the center C of the drum 32. Since each of the upper nozzles 650a and 650d injects the circulating water downward, when looking into the drum 32 from the front, the circulating water is more than the center C of the drum 32 at the inlet side of the drum 32. It passes through the upper region and is sprayed in a downwardly inclined form as it goes deep into the drum 32.

The pair of lower nozzles 650b and 650c are disposed above the inlet port 73 but below the pair of upper nozzles 650a and 650d. The pair of lower nozzles 650b and 650c may be disposed on both the left and right sides of the inlet port 71h, respectively, and preferably, are arranged symmetrically with respect to the reference line L, and each lower nozzle 650b. , The jet direction of 650c is symmetric with respect to the reference line (L).

The pair of lower nozzles 650b and 650c may be located below the center O or the center of the drum 32. Since each of the lower nozzles 650b and 650c sprays the circulating water upwards, when the drum 32 is viewed from the front, the circulating water is lower than the center C of the drum 32 at the inlet side of the drum 32. As it passes through the area, it is sprayed in an upwardly inclined form as it goes deep into the drum 32.

Taking the first nozzle 650a as an example, one end of the nozzle inlet pipe 651 communicates with the first port insertion pipe 641, and the other end is opened in the tub 31. The cross-sectional area of the other end is formed narrower than one end of the nozzle inlet pipe 651. The nozzle inlet pipe 651 is formed with a hollow 651a inside.

The nozzle head 652 interferes with the injected circulating water and changes the spraying direction of the circulating water. The nozzle head 652 injects the circulating water to the rear inner side of the tub 32.

The other end 653 of the nozzle head 652 is spaced apart from the discharge side (the other end) of the nozzle inlet pipe 651. The nozzle head 652 is disposed to cover the nozzle inlet pipe 651 while being spaced apart from the other end of the nozzle inlet pipe 651. The circulating water impinges on the inner surface of the nozzle head 652, and the discharge direction is changed. The other end 653 of the nozzle head 652 is disposed to face the rear of the tub 31.

The circulating water discharged to the nozzle inlet pipe discharge port 651c hits the collision surface 652a of the nozzle head 652 and is then injected into the tub 31 through the injection port 657. The direction in which the injection hole 657 faces and the direction in which the nozzle inlet pipe 651 extends cross.

The distribution pipe 701 includes an inflow port 73 connected to the circulation pipe 18, a transfer pipe 74 for guiding water introduced through the inflow port 73, and a protrusion pipe 74 protruding from the transfer pipe 74. A plurality of discharge ports 761, 762, 763, 764, 72e are included.

The distribution pipe 701 may be made of synthetic resin that is harder or rigid than the gasket 60. The distribution pipe 701 maintains a constant shape despite the vibration generated during the operation of the washing machine. In particular, when the distribution pipe 701 is deformed in response to the vibration of the tub 31, the distribution pipe 701 has a minute shape. The pipe 701 may be regarded as relatively close to the rigid body. The same applies to the first and second distribution pipes 702 and 703 described later.

The distribution pipe 701 branches the circulating water discharged from the circulation pipe 18 to form a first subclass FL1 (see FIG. 13) and a second subclass FL2 (see FIG. 13). The distribution pipe 701 has at least one discharge port 762, 763 formed on the first flow path through which the first partial flow FL1 is guided, and corresponds to a nozzle through the corresponding discharge port 762, 763. Circulating water is discharged to 650b and 650c. Similarly, at least one discharge port 764, 72e is formed on the second flow path through which the second partial flow FL2 is guided, and circulates through the corresponding discharge port 764, 72e to the corresponding nozzle 650d. Discharge the water. The transfer conduit 74 may include a first conduit portion 75 forming the first flow passage and a second conduit portion 76 forming the second flow passage.

One end of the first conduit 75 and one end of the second conduit 76 are connected to each other, and the inlet port 73 protrudes from the connected part. However, the other end of the first conduit portion 75 and the other end of the second conduit portion 76 are separated from each other. That is, the conveying conduit 74 is formed in the shape of “Y” as a whole, and is configured to branch and guide the circulating water introduced through one inlet (ie, the inflow port 73) into two flow paths.

The nozzles 650a, 650b, 650c, and 650d may be divided into upper nozzles 650a and 650d and lower nozzles 650b and 650c according to the height on the gasket 60. In an embodiment, four nozzles 650a, 650b, 650c, and 650d were provided, which are the first lower nozzle 650b, the second lower nozzle 650c, and the lower nozzles disposed below the gasket 60. It may include a first upper nozzle 650a and a second upper nozzle 650d disposed above the 650b and 650c.

The discharge ports 761, 762, 763, and 764 are provided in a number corresponding to the nozzles 650a, 650b, 650c, and 650d, and each discharge port 761, 762, 763, and 764 corresponds to a nozzle ( 650a, 650b, 650c, 650d) to supply circulating water.

The discharge ports 761, 762, 763, and 764 respectively supply the circulating water to the first upper discharge port 762 and the second upper nozzle 650d to supply the circulating water to the first upper nozzle 650a. First lower discharge port 763 for supplying circulating water to the upper discharge port 72e, the first lower nozzle 650b, and second lower discharge port 764 for supplying circulating water to the second lower nozzle 650c. It may include.

The conveying conduit 74 is disposed around the outer circumference of the gasket 60 and connected to the pump 901 via the circulation conduit 18. Each discharge port 761, 762, 763, 764 projects radially inward from the feed conduit 74, is inserted into the gasket 60 and circulated to the corresponding nozzles 650a, 650b, 650c, 650d. Supply water.

The distribution pipe 701 may include an inflow port 73 protruding from the transfer pipe 74 and connected to the circulation pipe 18. The inflow port 73 may protrude outward along the radial direction from the transport conduit 74.

Referring to FIG. 11, the first conduit unit 75 may include a first section 751 to a fourth section 754. Since the second conduit portion 76 is symmetrical to the first conduit portion 75 and its configuration is substantially the same as that of the second conduit portion 76, the description of the first conduit portion 75 will be described below. The same may be applied to the unit 76.

The first section 751 extends from the inlet port 73. The first section 751 is a section of an arc shape (or arc shape) extending at a predetermined curvature. In an embodiment, the first section 751 has a curved shape having a substantially constant curvature, but is not limited thereto and according to an embodiment, two or more curves having different curvatures may be connected to each other.

The second section 752 may be continuous from the first section 751 and may be formed to spread outwardly from the first section 751. In other words, the second section 752 corresponds to a portion that is bent from the top of the first section 751 to the outside (that is, away from the center O) and then extends by the distance L2. The length L2 of the second section 752 may be shorter than the length L1 of the first section 751.

The third section 753 is a portion extending from the second section 752 inwardly (that is, in a direction closer to the center O) and further extending by the distance L3. The third section 753 may extend substantially vertically upward from the second section 752. The lower discharge port 762 may be formed in the third section 753, and may extend in a horizontal direction (or a direction orthogonal to the second section 752).

In the third section 753, the surface 750b on which the lower discharge port 762 protrudes may be formed flat. The surface 750b may extend in the vertical direction. The face 750b may be at least partially in contact with the outer surface of the gasket body 63. Furthermore, an end portion of the second port insertion tube 642 may be in close contact with the surface 750b.

The fourth section 754 is bent from the third section 753 inwardly (ie, the direction closer to the center O) and then further extended by a distance L4 to the end of the first conduit portion 75. The upper discharge port 761 may be formed in the fourth section 754, and is preferably formed at the end of the fourth section 754 as in the embodiment. The fourth section 754 may have a curved shape having a predetermined curvature and may extend in a direction crossing the length direction of the upper discharge port 761.

At the end of the first conduit 75 (or the end of the fourth section 754), the surface 750a on which the upper discharge port 761 protrudes may be flat. The surface 750a may extend in the vertical direction. In this case, the surface 750b and the surface 750a are parallel to each other. At least a portion of the surface 750a may be in close contact with an end portion of the first port insertion tube 641. The face 750b may be at least partially in close contact with the end of the second port insertion tube 642.

On the other hand, since the fourth section 754 is bent inward from the third section 753, the surface 750a on which the upper discharge port 761 is formed when viewed from the front has the lower discharge port 762 formed thereon. It is located closer to the symmetry baseline L than face 750b. Furthermore, preferably the face 750a is closer to the outer face of the gasket body 63 than the face 750b.

In addition, when viewed from the front, the end of the first discharge port 761 is located at a point closer to the symmetric reference line L by a distance S than the end of the second discharge port 762.

11 to 12, a first port connecting portion 757 is formed at a portion connected to the first discharge port 761, and a second port connecting portion 758 at a portion connected to the second discharge port 762. ) May be formed.

Similarly, a third port connecting portion 767 is formed at a portion connected to the third discharge port 763 in the second conduit portion 760, and a fourth port connecting portion (7) at a portion connected to the fourth discharge port 764. 768 may be formed.

Each port connection part 757, 758, 767, 768, when viewed from the side, as shown in Figure 12, may be formed in a convex shape forward than the peripheral portion. The width P of each port connection part 757, 758, 767, and 768 may be larger than the width W of the peripheral part. In other words, the conduits 75 and 76 extend from the inlet port 73 to a constant width W and protrude convexly forward from the port connecting portion 758, and then decrease to W again to the port connecting portion 757. Is extended. Meanwhile, the width P of the port connecting portions 757, 758, 767, and 768 may be larger than the diameter t of the discharge port 761.

14 to 16, ring-shaped indentation protrusions 769 extending in the circumferential direction may be formed on the outer circumferential surfaces of the respective discharge ports 761, 762, 763, and 764. A plurality of indentation protrusions 769 may be disposed along the length direction of the discharge ports 761, 762, 763, and 764. The indentation protrusion 769 may have a cross section in the form of a wedge. When the first discharge port 761 is inserted into the first port insertion tube 641, the pressing force 769 presses the inner circumferential surface of the port insertion tube 641, 642, 643, 644, thereby increasing the bonding force.

When defining the direction in which the discharge port 761 is inserted into the port insertion tube 641 as the first direction, the indentation protrusion 769 is inclined so that the height is gradually lowered toward the first direction from the vertical plane and the vertical plane. It may include. When the discharge port 761 is inserted into the port insertion tube 641, the indentation is facilitated by the inclined surface, and after completion of the indentation, the discharge port 761 is easily removed from the port insertion tube 641 by the vertical surface. It will not escape. Since the distribution pipe 701 can be coupled to the gasket 60 without using a binding member (for example, a clamp), no time required for tightening the binding member is required.

On the other hand, the end of the discharge port (761, 762, 763, 764 in the state inserted into the port insertion pipe (641, 642, 643, 644) can reach the nozzle inlet pipe 651, at this time, the discharge port ( The inner circumferential surface of the 761, 762, 763, 764 and the inner circumferential surface of the nozzle inlet pipe 651 form a substantially continuous surface to reduce the resistance of the circulating water. The nozzle inlet pipe 651 has a tubular shape, protrudes from the inner circumferential surface of the outer diameter portion 632 and is connected to the corresponding nozzle head 652.

18 is a perspective view of a pump according to another embodiment of the present invention. 19 illustrates a distribution tube according to another embodiment of the present invention. Unlike the above-described embodiment, two distribution pipes 702 and 703 may be installed in the gasket 60. The two distribution pipes 702 and 703 may include a first distribution pipe 702 disposed on one side and a second distribution pipe 703 disposed on the other side based on the reference line L.

A pump 902 is provided for supplying circulating water to the two distribution pipes 702 and 703. The pump 902 may include two circulation ports 912a and 912b, and although not shown, two circulation pipes connect the circulation ports 912a and 912b to the distribution pipes 702 and 703, respectively. .

More specifically, the pump 902 includes a pump housing 91, an impeller 915 disposed in the pump housing 91, and a pump motor 92 that provides rotational force to rotate the impeller 915.

The pump housing 91 forms a chamber in which the impeller 915 is accommodated. The pump housing 91 is connected to the drainage bellows 17 and includes an inlet port 911 for guiding the circulating water into the chamber, a first circulation port 912a for discharging water conveyed by the impeller 915 and a first circulation port 912a. It may include two circulation ports (912b).

The water flow formed while the impeller 915 is rotated by the pump motor 92 is simultaneously discharged through the first circulation port 912a and the second circulation port 912b, and at this time, discharges through the first circulation port 912a. Water is supplied to the first distribution pipe 702 through the first circulation pipe (not shown), and the water discharged through the second circulation port 912b is discharged through the second circulation pipe (not shown) for the second minute. It is supplied to the pipe 703.

The first distribution pipe 912a supplies circulating water to the first nozzle 650a and the second nozzle 650b. The first distribution pipe 912a guides the first inflow port 73a connected to the first circulation port 912a by the first circulation pipe and the circulating water introduced through the first inflow port 73a. The first conduit portion 75 and two discharge ports 761 and 762 disposed on the first conduit portion 75 may be included.

Two discharge ports 761 and 762 may be inserted into the first port insertion tube 641 and the second port insertion tube 642, respectively.

The second distribution pipe 703 supplies circulating water to the third nozzle 650c and the fourth nozzle 650d. The second distribution pipe 703 guides the second inflow port 73b connected to the second circulation port 912b by the second circulation pipe and the circulating water introduced through the second inflow port 73b. The second conduit portion 76 and two discharge ports 763 and 764 disposed on the second conduit portion 76 may be included.

The two discharge ports 763 and 764 may be inserted into the third port insertion tube 643 and the fourth port insertion tube 644, respectively.

On the other hand, the pump housing 91 may further include a drain port 913 connected to the drain pipe 19, and as in the above-described embodiment, the pump 901 is a circulating water is introduced through the inlet port 911 and drainage It may further include a chamber 916 in communication with the port 913, an impeller 917 rotated in the chamber 916, and a second pump motor 93 for rotating the impeller 917 (above. See 5-6.).

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but may be manufactured in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

Claims (15)

Casing inlet is formed on the front;
A tub provided in the casing to accommodate washing water and having an inlet formed at the front thereof;
A drum rotatably provided in the tub;
A plurality of nozzles provided on an inner circumferential surface of the gasket body and a gasket body forming a passage connecting the inlet of the inlet and the tub, and spraying the washing water into the drum; A gasket comprising a plurality of port insertion tubes respectively communicating with the port;
A plurality of discharge ports respectively inserted into the plurality of port insertion pipes; And
A pump for pumping the washing water discharged from the tub to the plurality of discharge ports,
The plurality of port insertion pipe,
And a first and second port insertion pipe disposed vertically and parallel to the first area among the first and second areas in which the gasket body is distributed left and right. The method of claim 1,
The first and second port insertion pipes extend horizontally in the first direction. The method of claim 2,
The first port insertion tube is located above the median height of the gasket, and the second port insertion tube is located below the median height of the gasket. The method of claim 2 or 3,
The plurality of port insertion pipe,
Washing machine further comprises a third, fourth port insertion pipe disposed in the second area up and down and parallel to each other. The method of claim 4, wherein
The third and fourth port insertion pipes extend horizontally in a direction opposite to the first direction. The method of claim 5,
The third port insertion tube is located at the same level as the first port insertion tube,
The fourth port insertion tube is a washing machine located at the same height as the second port insertion tube. The method of claim 1,
The gasket,
A casing coupling portion coupled to the circumference of the inlet; And
A tub coupling part coupled around the inlet of the tub,
The gasket body,
Washing machine extending from the casing coupling portion to the tub coupling portion. The method of claim 7, wherein
The gasket body,
A rim extending from the casing coupling portion to the tub coupling portion;
An inner diameter portion extending from the rim portion to the casing coupling portion side; And
It includes an outer diameter portion extending from the inner diameter portion to the tub coupling portion,
The first to second port insertion tube,
Washing machine protruding from the outer peripheral surface of the outer diameter portion. The method of claim 8,
The washing machine of claim 2, wherein the length of the second port insertion tube is shorter than that of the first port insertion tube. The method of claim 9,
The first port insertion tube,
Located upwards by a first distance from the mid-height point of the gasket body,
The second port insertion tube,
A washing machine located below the middle height bottom of the gasket body by a second distance smaller than the first distance. The method of claim 8,
The plurality of port insertion pipe,
Further comprising third and fourth port insertion tubes disposed vertically and parallel to each other in the second region,
And a fourth length of the fourth port insertion tube is shorter than the third port insertion tube. The method of claim 11,
The third port insertion tube,
Located upwards by a first distance from the mid-height point of the gasket body,
The fourth port insertion tube,
A washing machine located below the middle height bottom of the gasket body by a second distance smaller than the first distance. The method of claim 1,
The first and second port insertion pipes and the third and fourth port insertion pipes are symmetrically disposed. The method of claim 1,
The plurality of port insertion pipe,
Further comprising third and fourth port insertion tubes disposed vertically and parallel to each other in the second region,
A circulation pipe guiding the washing water discharged from the pump; And
A distribution pipe which is fixed to the gasket and supplies washing water guided through the circulation pipe to the plurality of nozzles,
The distribution pipe,
An inlet port connected to the circulation pipe; And
And a first conduit part and a second conduit part for branching the wash water supplied through the inflow port,
The plurality of discharge ports,
First and second discharge ports disposed on the first conduit and inserted into the first and second port insertion pipes, respectively; And
And a third and fourth discharge ports disposed on the second conduit and inserted into the third and fourth port insertion pipes, respectively. The method of claim 1,
The plurality of port insertion pipe,
Further comprising third and fourth port insertion tubes disposed vertically and parallel to each other in the second region,
First and second circulation pipes guiding the washing water discharged from the pump;
A first distribution pipe disposed in the first area and guiding the wash water supplied through the first circulation pipe; And
A second distribution pipe disposed in the second area and guiding the wash water supplied through the second circulation pipe;
The plurality of discharge ports,
First and second discharge ports disposed in the first distribution pipe and inserted into the first and second port insertion pipes, respectively; And
And a third and fourth discharge ports disposed in the second distribution pipe and inserted into the third and fourth port insertion pipes, respectively.

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