EP3995621A1 - Waschmaschine - Google Patents

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Publication number
EP3995621A1
EP3995621A1 EP20836546.0A EP20836546A EP3995621A1 EP 3995621 A1 EP3995621 A1 EP 3995621A1 EP 20836546 A EP20836546 A EP 20836546A EP 3995621 A1 EP3995621 A1 EP 3995621A1
Authority
EP
European Patent Office
Prior art keywords
gasket
gasket body
residual water
port
washing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20836546.0A
Other languages
English (en)
French (fr)
Other versions
EP3995621A4 (de
Inventor
Kilryong Lee
Yeongkyeong Choi
HyeonSik LEE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP3995621A1 publication Critical patent/EP3995621A1/de
Publication of EP3995621A4 publication Critical patent/EP3995621A4/de
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F21/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement 
    • D06F21/10—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement  about an inclined axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/081—Safety arrangements for preventing water damage
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/06—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about an inclined axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps

Definitions

  • the present disclosure relates to a washing machine, and more particularly, to a washing machine having a nozzle for spraying water which is discharged from a tub and circulated along a circulation pipe into a drum.
  • a washing machine is an apparatus that separates contaminants from clothing, bedding, and the like (hereinafter, referred to as "laundry") by using a chemical decomposition of water and detergent and a physical action such as friction between water and laundry.
  • a washing machine includes a tub containing water and a drum rotatably installed in the tub to receive the laundry.
  • Patent Publication No. 10-2018-0131894 (hereinafter referred to as 'prior art') discloses a washing machine including a pump for pumping water discharged from a tub, a gasket having a plurality of nozzles for spraying water into a drum, and a guide pipe which is fixed to the gasket and guides the water pumped by the pump to the plurality of nozzles.
  • the washing machine disclosed in the prior art has a problem in that water may remain in the gasket after washing so that contamination occurs.
  • a residual water outlet passing through the gasket may be considered.
  • a hose for recovering or draining the water that has discharged through the residual water outlet is required, and such a hose has a problem in that it may interfere with the guide pipe.
  • the present disclosure has been made in view of the above problems, and provides a washing machine capable of discharging water remaining in a gasket.
  • the present disclosure further provides a washing machine in which a residual water discharge pipe for discharging water remaining in a gasket and a distribution pipe for guiding water to a plurality of nozzles do not interfere with each other.
  • the present disclosure further provides a washing machine that does not require a separate hose for discharging residual water.
  • the present disclosure further provides a washing machine capable of washing a window of a door.
  • a washing machine includes: a casing having a laundry inlet formed in a front surface; a tub which is disposed in the casing, and has an opening formed in a front surface thereof; a drum which is rotatably provided in the tub and which is configured to accommodate laundry; a gasket body comprising a gasket body forming a passage connecting the laundry inlet and the opening, a plurality of nozzles which are provided on an inner circumferential surface of the gasket body and which are configured to spray water into the drum, and a residual water discharge pipe which communicates with a residual water outlet passing through the gasket body and protrudes from an outer circumferential surface of the gasket body; a pump which is configured to pump water discharged from the tub; and a distribution pipe which is configured to supply the water pumped by the pump to the plurality of nozzles.
  • the distribution pipe includes: an inlet port through which the water pumped by the pump is introduced; a transfer conduit which is disposed in an outer circumferential surface of the gasket body, and guides the water introduced from the inlet port; and an entrance port which protrudes from the transfer conduit toward the gasket body.
  • the distribution pipe further comprises a plurality of discharge ports that protrude from the transfer conduit toward the gasket body, and supply water to each of the plurality of nozzles.
  • the entrance port is inserted into the residual water discharge pipe.
  • the gasket body includes: a lower central portion located in a vertical lower side from a center of the gasket body; and a lower surface extending horizontally to both left and right sides from the lower central portion.
  • the residual water outlet is formed in the lower surface.
  • the residual water outlet and the residual water discharge pipe are located in the vertical lower side from the center of the gasket body.
  • the gasket body includes: a rim portion extending from the casing; an inner diameter portion which is bent outward from the rim portion and then extends toward the casing; and an outer diameter portion which is bent outward from the inner diameter portion and then extends toward the casing, and has a larger diameter than the inner diameter portion.
  • the residual water outlet is formed in the outer diameter portion.
  • the residual water outlet is located in a rear side than the portion bent from the rim portion of the inner diameter portion.
  • the transfer conduit has an inflow section in which the inlet port is located, the entrance port protrudes from the inflow section toward the gasket body, and the inlet port protrudes from the inflow section in a direction opposite to the entrance port based on the transfer conduit.
  • An inner diameter of the entrance port is smaller than an inner diameter of the inlet port.
  • the entrance port is located in an inner side of a virtual cylindrical surface which is obtained by extending the inlet port upwardly.
  • the washing machine further includes a door which is rotatably provided in the casing, and opens and closes the laundry inlet.
  • the door includes a door frame which forms an outer edge of the door; and an inner window which protrudes rearwardly from the door frame.
  • the inner window includes an upper portion that is inclined rearward as it progresses toward a lower side, and a lower portion that extends downward from the upper portion.
  • the lower portion of the inner window is located in a rear side than the residual water outlet.
  • the gasket includes a residual water discharge pipe communicating with the residual water outlet, and the distribution pipe includes an entrance port inserted into the residual water discharge pipe, so that the residual water discharge pipe and the distribution pipe do not interfere with each other and the residual water can be recovered.
  • the gasket includes a residual water discharge pipe communicating with the residual water outlet, and the distribution pipe includes an entrance port inserted into the residual water discharge pipe, so that the residual water can be recovered without a separate hose for discharging the residual water.
  • the entrance port is arranged in the inflow section where the inlet port is located, and the water pumped by the pump is sprayed to the residual water outlet, so that the window of the door can be washed.
  • a washing machine includes a casing 10 forming an outer shape, a tub 30 storing wash water, and a drum 40 which is rotatably provided in the tub 30 and into which laundry is loaded.
  • a motor 50 hereinafter also referred to as a 'driving unit' for rotating the drum.
  • a front panel 11 having a laundry inlet 12 formed thereon On a front surface of the casing 10, a front panel 11 having a laundry inlet 12 formed thereon is disposed, and on the front panel 11, a door 20 for opening and closing the laundry inlet 12 may be disposed and a dispenser 14 into which detergent is loaded may be installed.
  • a water supply valve 15, a water supply pipe 16, and a water supply hose 17 are installed inside the casing 10, and the wash water that has passed through the water supply valve 15 and the water supply pipe 16 when water is supplied is mixed with the detergent in the dispenser 14 and then supplied to the tub 30 through the water supply hose 17.
  • a direct water supply pipe 18 is connected to the water supply valve 15 so that the wash water can be directly supplied into the tub 30 through the direct water supply pipe 18 without mixing with the detergent.
  • a pump 70 and a distribution pipe 80 may be installed, the pump 70 and the tub 30 may be connected to a discharge hose 72, and the distribution pipe 80 and the pump 70 may be directly connected or may be connected to a circulation pipe 87. Accordingly, when the pump 70 is operated, the wash water stored in the tub 30 may be sprayed into a drum 40 through the distribution pipe 80 and circulated.
  • the pump 70 may be connected to a drain pipe 74 to discharge wash water to the outside through the drain pipe 74.
  • the pump 70 of the washing machine serves as a drain pump for discharging wash water to the outside and a circulation pump for circulating wash water.
  • the drain pump and the circulation pump may be installed separately, and when the drain pump and the circulation pump are installed separately, it is natural that the drain pipe 74 is connected to the drain pump and the circulation pipe 87 is connected to the circulation pump.
  • the tub 30 may be formed of a single tub body, or first and second tub bodies 30a and 30b may be formed by fastening each other, and in the embodiment of the present disclosure, it will be described as an example that the first and second tub bodies 30a and 30b are fastened to form the tub 30.
  • the first tub body 30a will be simply referred to as a 'tub 30'.
  • the tub 30 is disposed in the casing 10, and an opening 32 (see FIG. 4 ) is formed in a forward direction of the tub 30 to correspond to the laundry inlet 12 formed in the front panel 11.
  • the drum 40 in which laundry is accommodated may be rotatably provided in the tub 30.
  • the drum 40 accommodates the laundry, is disposed so that an inlet into which the laundry is loaded is located in the front surface, and rotates about an approximately horizontal rotation center line.
  • horizontal herein is not a term used in a mathematically strict sense. That is, even when the rotation center line is inclined at a certain angle with respect to the horizontal as in the embodiment, it is close to a horizontal rather than to a vertical. Therefore, it can be said that it is substantially horizontal.
  • a plurality of holes may be formed in the drum 40 so that water in the tub 30 may flow into the drum 40.
  • a plurality of lifters may be provided in the inner surface of the drum 40.
  • the plurality of lifters may be disposed at a certain angle with respect to the center of the drum 40. When the drum 40 rotates, it repeats that the laundry is lifted up by the lifter and then dropped.
  • a driving unit 50 for rotating the drum 40 may be further provided, and a driving shaft rotated by the driving unit 50 may pass through the rear surface of the tub 30 to be coupled to the drum 40.
  • the driving unit 50 is configured to include a direct-connected washing motor, and the washing motor may include a stator fixed in the rearward of the tub 30, and a rotor rotated by magnetic force acting between the stator and the rotor.
  • the driving shaft may rotate integrally with the rotor.
  • the washing machine includes a gasket 60 connecting the casing 10 and the tub 30, a nozzle 66, 67 (see FIG. 6 ) for spraying water into the drum 40, a pump 70 for pumping the water discharged from the tub 30, and a distribution pipe 80 for guiding the water pumped by the pump 70 to the nozzle 66, 67.
  • a balancer 90 disposed in the front surface 31 of the tub 30, and a circulation pipe 87 which guides the water pumped from the pump 70 to the distribution pipe 80.
  • the gasket 60 includes a gasket body 61, 62 forming a passage 60P connecting the laundry inlet 12 of the casing 10 and the opening 32 of the tub 30.
  • the inner side circumferential surface facing the center of the gasket 60 body 61, 62 may be referred to as an inner circumferential surface 62, and the outer side circumferential surface opposite to this may be referred to as an outer circumferential surface 61.
  • the inner circumferential surface 62 of the gasket body forms a passage 60P connecting the laundry inlet 12 and the opening 32.
  • the outer circumferential surface 61 of the gasket body may face the inner circumferential surface of the balancer 90.
  • the outer circumferential surface 61 of the gasket 60 body may face the distribution pipe 80.
  • the gasket 60 is disposed between the edge of the inlet 12 of the front panel 11 forming the laundry inlet 12 and the edge of the opening 32 of the tub 30 forming the opening 32, thereby preventing the wash water stored in the tub 30 from leaking from the tub 30.
  • the gasket 60 is formed of a flexible material such as rubber and has a substantially cylindrical shape (hereinafter, also referred to as a tubular shape).
  • the gasket 60 may be made of a material such as Ethylene Propylene Diene Monomer (EPDM) or Thermo Plastic Elastomer (TPE), but is not limited thereto.
  • EPDM Ethylene Propylene Diene Monomer
  • TPE Thermo Plastic Elastomer
  • the front edge of the gasket 60 is connected to the edge of the inlet 12 of the front panel 11, and the rear edge of the gasket 60 is connected to the edge of the opening 32 of the tub 30, so that the body 61, 62 connecting the front and rear edges of the gasket 60 forms the laundry loading passage 60P. Further, when a gap between the tub and the front panel is sealed and the door 20 is closed, the door 20 and the front end portion of the gasket 60 come in close contact with each other and a gap between the door 20 and the gasket 60 is sealed, so that leakage of wash water is prevented.
  • the gasket 60 has a front end portion and a rear end portion respectively having an annular shape, and has a tubular shape extending from the front end portion to the rear end portion.
  • the front end portion of the gasket 60 is fixed to the casing 10, and the rear end portion is fixed to an inlet circumference 33 of the tub 30.
  • the gasket 60 may be made of a flexible or elastic material.
  • the gasket 60 may be made of natural rubber or synthetic resin.
  • the gasket 60 may include a casing coupling portion 68a coupled to the circumference of the inlet 12 of the casing 10, a tub coupling portion 68b coupled to the inlet circumference 33 of the tub 30, and a gasket body 61, 62 extending between the casing coupling portion 68a and the tub coupling portion 68b.
  • the casing coupling portion 68a and the tub coupling portion 68b may be respectively formed in an annular shape, and a body portion may have an annular rear end portion connected to the tub coupling portion 68b from an annular front end portion connected to the casing coupling portion 68a, and may be formed in a tubular shape extending from the front end portion to the rear end portion.
  • a circumference of the inlet 12 is rolled outward, and the casing coupling portion 68a may be fitted in a concave portion formed by such a rolled portion.
  • An annular groove around which a wire is wound may be formed in the casing coupling portion 68a. After the wire is wound along the groove, both ends of the wire are bound together, so that the casing coupling portion 68a is firmly fixed around the inlet 12.
  • an inlet circumference 33 forming the opening 32 of the tub 30 protrudes from the front surface 31 and is rolled outward, and a tub coupling portion 68b is fitted in a concave portion formed by such a rolled portion.
  • An annular groove around which a clamp formed of a wire is wound may be formed in the tub coupling portion 68b.
  • the tub coupling portion 68b of the gasket is coupled to the inlet circumference 33 of the tub, the clamp is wound along the groove, and then both ends of the clamp are bound together, so that the tub coupling portion 68b is firmly fixed to the inlet circumference 33 of the tub 30.
  • the gasket 60 may have a foldable portion 61b (hereinafter also referred to as an 'inner diameter portion'), which is folded as the tub 30 moves in a moving direction (or radial direction) due to an eccentricity, that is formed in a section between the casing coupling portion 68a and the tub coupling portion 68b (or the gasket body 61, 62).
  • a foldable portion 61b hereinafter also referred to as an 'inner diameter portion'
  • the gasket body 61, 62 may include a tubular rim portion 61a extending from the casing 10 (or the casing coupling portion 68a) toward the tub 30 (or the tub coupling portion 68b) (or in the rearward), an inner diameter portion 61b that is bent outward from the rim portion 61a and then extends toward the casing 10, and an outer diameter portion 61c which is bent outward from the inner diameter portion 61b and then extends in the direction of the tub 30 and has a larger diameter than the rim portion 61a and the inner diameter portion 61b.
  • the drum 40 vibrates (i.e., the rotation center line (see FIG. 2 ) of the drum 40 moves) during the rotation process, and accordingly, the center line (approximately, the same as the rotation center line of the drum 40) of the tub 30 also moves.
  • the movement direction (hereinafter referred to as "eccentric direction") at this time has a radial component.
  • the front side of the inner diameter portion 61b and the outer diameter portion 61c is folded or unfolded when the tub 30 moves in the eccentric direction.
  • a portion of the inner diameter portion 61b is folded, in that portion, a gap between the inner diameter portion 61b and the outer diameter portion 61c is reduced.
  • the gap between the inner diameter portion 61b and the outer diameter portion 61c is widened.
  • the gasket 60 may include an outer door contact portion 683 that is in close contact with the rear surface of the door 20 from the outside of the inlet 12 in a state where the door 20 is closed, while being bent outwardly from the front end of the gasket body 61, 62.
  • the casing coupling portion 68a may have the above mentioned groove which is formed in a portion that is extended from the outer end of the outer door contact portion 683.
  • the gasket 60 may further include an inner door contact portion 681 that is in close contact with the rear surface (preferably, the window 23) of the door 20 from the inside of the inlet 12 in a state where the door 20 is closed, while being bent inward from the front end of the gasket body 61, 62.
  • the washing machine includes a door 20 that opens and closes the laundry inlet 12.
  • the door 20 is rotatably provided in the casing 10.
  • the door 20 includes a door frame 21 which forms an outer edge of the door and is rotatably coupled to the casing 10.
  • the door frame 21 may have a circular hole formed in the center.
  • the door 20 includes a window 22, 23 located in a circular hole formed in the door frame 21.
  • the window 22, 23 is coupled to the door frame 21.
  • the window 22, 23 is formed of a transparent material, so that a user can observe the inside of the drum in a state where the door 20 is closed.
  • the window 22, 23 may include an outer window 22 located in the front side and an inner window 23 located in the rear side in a state where the door 20 is closed.
  • the outer window 22 is formed to be flat so as to reduce distortion of the field of view when a user observes the inside of the drum 40.
  • 'flat' does not mean only a completely flat surface, but can be understood to include a shape that is curved but not bent.
  • the inner window 23 is located rearward than the outer window 22 in a state where the door is closed.
  • the inner window 23 protrudes rearwardly from the door frame 21. That is, the inner window 23 includes a portion that protrudes rearwardly from a portion coupled to the door frame 21.
  • the inner window 23 includes an upper portion 23a inclined rearward as it progresses toward the lower side, and a lower portion 23b extending downward from the upper portion 23a.
  • the inner window 23 may include a window circumference portion 23c surrounding the upper portion 23a and the lower portion 23b.
  • the window circumference portion 23c is coupled to the door frame 21.
  • the window circumference portion 23c extends in a rearward direction from the door frame 21.
  • the upper portion 23a of the inner window 23 is inclined rearward as it progresses toward the lower side, and is inclined so that the inclination does not change abruptly.
  • the upper portion 23a of the inner window 23 may extend to a lower side than the center of an up-down direction of the window 22, 23.
  • the lower portion 23b of the inner window 23 may be located rearward than the front surface 31 of the tub. As washing proceeds based on such a structure, it is possible to significantly prevent the wash water from spattering onto the front portion (i.e., the rim portion 61a and the casing coupling portion 68a) of the gasket 60.
  • the lower portion 23b of the inner window 23 may be located rearward than a residual water outlet 69h described later. Accordingly, the water pumped from the pump 70 is sprayed toward the inner window 23 through the residual water outlet 69h to wash the inner window 23. In more detail, the water discharged from the residual water outlet 69h is sprayed toward the lower portion 23b of the inner window 23 and the window circumference portion 23c.
  • a plurality of nozzles 66 and 67 may be provided on the inner circumferential surface 62 of the gasket 60.
  • the nozzle 66, 67 may include an upper nozzle 66a, 67a and a lower nozzle 66b, 67b provided in the lower side than the upper nozzle 66a, 67a.
  • the upper nozzle 66a, 67a may be disposed in the upper side than the center O of the gasket 60
  • the lower nozzle 66b, 67b may be disposed in the lower side than the center O of the gasket 60.
  • the plurality of nozzles 66 and 67 may include a first nozzle 66 disposed in a first area among first and second areas which are obtained by dividing the gasket body 61, 62 into the left and right sides, and a second nozzle 67 disposed in the second area.
  • the first nozzle 66 may be disposed in the left side of the gasket inner circumferential surface 62
  • the second nozzle 67 may be disposed in the right side of the gasket inner circumferential surface 62.
  • a plurality of first nozzles 66 and second nozzles 67 may be provided, respectively.
  • two first nozzles 66 and two second nozzles 67 are provided, respectively, but the present disclosure is not limited thereto.
  • the first nozzle 66 may include a first upper nozzle 66a and a first lower nozzle 66b that are disposed vertically in the first area.
  • the first lower nozzle 66b may be disposed in the lower side than the center O of the gasket 60, and the first upper nozzle 66a may be disposed in the upper side than the first lower nozzle 66b.
  • the first upper nozzle 66a may be disposed in the upper side than the center O of the gasket 60.
  • the second nozzle 67 may include a second upper nozzle 67a and a second lower nozzle 67b that are disposed vertically in the second area.
  • the second lower nozzle 67b may be disposed in the lower side than the center O of the gasket 60
  • the second upper nozzle 67a may be disposed in the upper side than the second lower nozzle 67b.
  • the second upper nozzle 67a may be disposed in the upper side than the center O of the gasket 60.
  • the first and second lower nozzles 66b and 67b spray the circulating water into the drum 40, but may spray upward.
  • the first and second upper nozzles 66a and 67a spray the circulating water into the drum 40, but may spray downward.
  • the circulating water means water which is discharged from the tub 30, pumped by the pump 70, guided to the distribution pipe 80, and sprayed into the drum 40 through the nozzle 66, 67.
  • a direct water nozzle for spraying water into the drum 40 may be provided in the gasket 60, and a direct water supply pipe 18 for guiding water supplied through a water supply portion to the direct water nozzle may be provided.
  • the direct water nozzle may be a vortex nozzle or a spray nozzle, but is not necessarily limited thereto.
  • the direct water nozzle may be disposed on a vertical line OV, when viewed from the front.
  • the inner window 23 further protrudes toward the drum 40 than the direct water nozzle, and the water flow sprayed through the direct water nozzle may reach the inner window 23. In this case, there is an effect that the inner window 22 is cleaned.
  • the gasket 60 includes a port insertion pipe 63, 64 communicating with the nozzle 66, 67.
  • the port insertion pipe 63, 64 may be formed to protrude from the outer circumferential surface 61 of the gasket body.
  • a discharge port 83, 84 described later is inserted into the port insertion pipe 63, 64, and the port insertion pipe 63, 64 is formed to protrude from the outer circumferential surface 61 of the gasket 60, so that water supplied from the distribution pipe 80 to the nozzle 66, 67 can be prevented from leaking between the port insertion pipe 63, 64 and the discharge port 83, 84.
  • the port insertion pipe 63, 64 may be provided in plurality like the above-described nozzle 66, 67, may be provided in the same number as the nozzle 66, 67.
  • the plurality of port insertion pipes 63 and 64 may include a first port insertion pipe 63 disposed in a first area among first and second areas which are obtained by dividing the gasket body 61, 62 into the left and right sides, and a second port insertion pipe 64 disposed in the second area.
  • the first port insertion pipe 63 may communicate with the first nozzle 66, and the second port insertion pipe 64 may communicate with the second nozzle 67.
  • the first port insertion pipe 63 may be disposed in the left side of the outer circumferential surface 61 of the gasket body, and the second port insertion pipe 64 may be disposed in the right side of the outer circumferential surface 61 of the gasket body.
  • the first port insertion pipe 63 may include a first upper port insertion pipe 63a and a first lower port insertion pipe 63b that are disposed vertically in the first area.
  • the first lower port insertion pipe 63b is disposed in the lower side than the center O of the gasket 60
  • the first upper port insertion pipe 63a is disposed in the upper side than the first lower port insertion pipe 63b.
  • the first upper port insertion pipe 63a may be disposed in the upper side than the center O of the gasket 60.
  • the first lower port insertion pipe 63b communicates with the first lower nozzle 66b, and the first upper port insertion pipe 63a communicates with the first upper nozzle 66a.
  • the first upper port insertion pipe 63a and the first lower port insertion pipe 63b may protrude in a direction parallel to each other.
  • the second port insertion pipe 64 may include a second upper port insertion pipe 64a and a second lower port insertion pipe 64b that are disposed vertically in the second area.
  • the first lower port insertion pipe 64b is disposed in the lower side than the center O of the gasket 60
  • the second upper port insertion pipe 64a is disposed in the upper side than the second lower port insertion pipe 64b.
  • the second upper port insertion pipe 64a may be disposed in the upper side than the center O of the gasket 60.
  • the second lower port insertion pipe 64b communicates with the second lower nozzle 67b, and the second upper port insertion pipe 64a communicates with the second upper nozzle 67a.
  • the second upper port insertion pipe 64a and the second lower port insertion pipe 64b may protrude in a direction parallel to each other.
  • the upper nozzle 66a, 67a of the first and second nozzles 66 and 67 and the upper port insertion pipe 63a, 64a of the first and second port insertion pipes 63 and 64 may be located in the upper side than the horizontal line OH passing through the center O of the gasket 60.
  • the lower nozzle 66b, 67b of the first and second nozzles 66 and 67 and the lower port insertion pipe 63b, 64b of the first and second port insertion pipes 63 and 64 may be located in the lower side than the horizontal line OH passing through the center O of the gasket 60.
  • the distance between the lower nozzle 66b, 67b and the horizontal line OH passing through the center O of the gasket 60 may be shorter than the distance between the upper nozzle 66a, 67a and the horizontal line OH. Therefore, the distance between the lower port insertion pipe 63b, 64b and the horizontal line OH may be shorter than the distance between the upper port insertion pipe 63a, 64a and the horizontal line OH.
  • the laundry accommodated in the drum 40 is accumulated on the lower side of the inside of the drum 40 due to gravity, and the lower nozzle 66b, 67b should be disposed to be spaced apart from the lowest point of the gasket 60 by a considerable height in order to smoothly spray water onto the laundry accommodated in the drum 40.
  • an angle formed by the lower nozzle 66b, 67b, the center O of the gasket 60, and the lowest point of the gasket 60 may be 45 degrees or more.
  • an angle formed by the center O of the gasket 60 and the lowest point of the gasket 60 may be 45 degrees or more.
  • the upper nozzle 66a, 67a should be disposed to be spaced apart from the lower nozzle 66b, 67b by a considerable distance.
  • an angle between a straight line passing through the upper nozzle 66a, 67a and the center O of the gasket 60 and a horizontal line OH passing through the center O of the gasket 60 may be 30 degrees or more.
  • an angle between a straight line passing through the upper port insertion pipe 63a, 64a and the center O of the gasket 60 and a horizontal line OH passing through the center O of the gasket 60 may be 30 degrees or more.
  • a protrusion 65 may protrude inward from a portion corresponding to the port insertion pipe 63 and 64, and a nozzle 66 may be formed in the protrusion 65.
  • the protrusion 65 may include first to fourth protrusions 65a, 65b, 65c, and 65d that protrude inward at a portion corresponding to first upper and lower port insertion pipes 63a and 63b and second upper and lower port insertion pipes 64a and 64b.
  • First upper and lower nozzles 66a and 66b and second upper and lower nozzles 67a and 67b may be formed in the first to fourth protrusions 65a, 65b, 65c, and 65d, respectively.
  • the distribution pipe 80 includes a transfer conduit 81, 82 for guiding the water pumped from the pump 70, and a discharge port 83, 84 that protrudes from the transfer conduit 81, 82 toward the gasket body 61, 62 side and is coupled to the port insertion pipe 63, 64.
  • the distribution pipe 80 may include an inlet port 85 through which the water discharged from the pump 70 is introduced, and the transfer conduit 82 may guide the water introduced through the inlet port 85 to the discharge port 83, 84.
  • the discharge port 83, 84 may be inserted into the port insertion pipe 63, 64 to be coupled to the gasket 60.
  • the transfer conduit 81, 82 of the distribution pipe 80 is disposed on the outer circumferential surface 61 of the gasket body. At least a portion of the transfer conduit 81, 82 may be located in a receiving portion 610 of the gasket 60, and may be disposed between the outer circumferential surface 61 of the gasket body and the balancer 90. Accordingly, the distribution pipe 80 may be installed without the need to secure a separate space.
  • the distribution pipe 80 may be made of a synthetic resin that is harder or more rigid than the gasket 60.
  • the distribution pipe 80 maintains a constant shape despite a vibration generated during the operation of the washing machine.
  • the distribution pipe 80 may be considered to be relatively close to a rigid body.
  • the circulation pipe 87 described later may be a flexible one that is deformed in response to the vibration of the tub 30.
  • the distribution pipe 80 may be made of a synthetic resin that is harder or more rigid than the circulation pipe 87.
  • the distribution pipe 80 of the washing machine may be formed in a substantially ring shape with the upper part 88 opened. That is, the distribution pipe 80 includes an inlet port 85 through which water pumped from the pump 70 is introduced, one or more discharge ports 83 and 84 for discharging the introduced water to be sprayed into the drum 40, and a transfer conduit 81, 82 connecting the inlet port 85 and the discharge port 83, 84.
  • One end of the left conduit 81 and one end of the right conduit 82 of the transfer conduit 81, 82 are connected to each other at a point where the inlet port 85 is provided, and the other end of the left conduit 81 and the other end of the right conduit 82 may be separated from each other.
  • the inlet port 85 may be formed to protrude downward from the lower side of the transfer conduit 81, 82, and the discharge ports 83 and 84 may be formed to protrude inwardly (or toward the gasket side) respectively from the left and right sides of the distribution pipe 80.
  • the circulation pipe 87 is disposed between the inlet port 85 and a circulation port 78 formed in the pump 70, so that the wash water in the tub flows into the inlet port 85 through the circulation pipe 87.
  • the plurality of discharge ports 83 and 84 may include an upper discharge port 83a, 84a coupled to the upper port insertion pipe 63a, 64a of the gasket 60, and a lower discharge port 83b, 84b coupled to the lower port insertion pipe 63b, 64b of the gasket 60.
  • the upper discharge port 83a, 84a and the lower discharge port 83b, 84b may protrude from the transfer conduit 81, 82 in a direction toward the center O of the gasket.
  • the upper and lower discharge port 83, 84 may protrude parallel to each other (or also referred to as a parallel direction).
  • the discharge port 83, 84 protrudes from the inner surface (the surface facing the outer circumferential surface 61 of the gasket) of the transfer conduit 81, 82 toward the center direction of the gasket 60, and is inserted into the port insertion pipe 63, 64.
  • the discharge port 83, 84 guides the circulating water flowing along the transfer conduit 81, 82 to the nozzle 66, 67 to be sprayed into the drum 40.
  • the discharge port 83, 84 Since the diameter of the discharge port 83, 84 is formed slightly larger than the inner diameter of the port insertion pipe 63, 64, the discharge port 83, 84 can be press-fitted into the port insertion pipe 63, 64.
  • a force may act on a section in which the discharge port 83, 84 of the transfer conduit 81, 82 is located, in the opposite direction to the gasket 60 due to reaction.
  • the port insertion pipe 63, 64 may be formed to protrude outwardly from the outer circumferential surface 61 of the gasket 60, and the diameter of the discharge port 83, 84 may be formed slightly larger than the inner diameter of the port insertion pipe 63, 64.
  • the discharge port 83, 84 includes a first discharge port 83 protruding from the left conduit 81 of the transfer conduit 81, 82 in a direction toward a vertical line OV passing through the center O of the gasket 60, and a second discharge port 84 protruding from the right conduit 82 of the transfer conduit 81, 82 in a direction toward the vertical line OV passing through the center O of the gasket.
  • the first discharge port 83 is inserted into the first port insertion pipe 63 to guide the circulating water to the first nozzle 66
  • the second discharge port 84 is inserted into the second port insertion pipe 64 to guide the circulating water to the second nozzle 67.
  • the first discharge port 83 may include a first lower discharge port 83b inserted into the first lower port insertion 63b, and a first upper discharge port 83a which is formed in the upper side than the first lower discharge port 83b and inserted into the first upper port insertion pipe 63a.
  • the second discharge port 84 may include a second lower discharge port 84b inserted into the second lower port insertion pipe 64b, and a second upper discharge port 84a which is formed in the upper side than the second lower discharge port 84b and inserted into the second upper port insertion pipe 64a.
  • the inlet port 85 is connected to the transfer conduit 81, 82 at the lower side than any of the plurality of discharge ports 83 and 84.
  • the inlet port 85 is connected to the transfer conduit 81, 82 in the lower side than the lower discharge port 83b, 84b.
  • the transfer conduit 81, 82 of the washing machine is disposed in the outer circumferential surface 61 of the gasket body 61, 62.
  • the transfer conduit 81, 82 guides the water introduced through the inlet port to the plurality of discharge ports 83 and 84.
  • the transfer conduit 81, 82 includes a first conduit portion 81 forming the left portion of the transfer conduit 81, 82 based on the inlet port 85, and a second conduit portion 82 forming the right portion.
  • the first conduit portion 81 and the second conduit portion 82 may be connected to each other at the lower side, and the inlet port 85 may protrude downward from a point where the first and second conduit portions are connected to each other.
  • the transfer conduit 81, 82 may branch the water flowing in from the inlet port 85 to both left and right sides and guide it upward.
  • the transfer conduit 81, 82 branches the circulating water flowing in from the inlet port 85, thereby forming a first partial flow (water flowing along the first conduit portion 81) and a second partial flow (water flowing along the second conduit portion 82).
  • the first partial flow may be sprayed into the drum 40 through a first nozzle 66, and a second partial stream may be sprayed into the drum 40 through a second nozzle 67.
  • At least a portion of the transfer conduit 81, 82 may be disposed between the gasket body 61, 62 and the balancer 90.
  • the transfer conduit 81, 82 may be disposed so that the inner side surface faces the outer circumferential surface 61 of the gasket body, and the outer side surface faces the balancer 90.
  • the transfer conduit 81, 82 may be formed in an arc shape having an upper opening 88, which has an overall central angle of 180 degrees or more, and may be formed in a left-right symmetrical shape.
  • the transfer conduit 82 may include a first conduit portion 81 disposed in the left and a second conduit portion 82 disposed in the right side, and the first conduit portion 81 and the second conduit portion 82 may be formed in a left-right symmetrical form based on a vertical line OV passing through the center O of the gasket 60.
  • the transfer conduit 81, 82 have an inflow section 85s in which the inlet port 85 is located.
  • the inflow section 85s may be located between the first conduit portion 81 and the second conduit portion 82.
  • the first conduit portion 81 and the second conduit portion 82 are respectively connected to the inflow section 85s.
  • the inflow section 85s may be located in the lower center of the transfer conduit 81, 82.
  • the inflow section 85s may be located on a vertical line OV passing through the center O of the gasket.
  • the inlet port 85 protrudes from the inflow section 85s to the opposite side of the gasket body 61, 62.
  • the inlet port 85 may protrude downward from the inflow section 85s.
  • the inlet port 85 may protrude in the opposite direction to an entrance port 86 described later based on the transfer conduit 81, 82.
  • the numbers and positions of the aforementioned port insertion pipe 63, 64, the protrusion 65, the nozzle 66, 67, and the discharge port 83, 84 can be changed.
  • the protrusion 65 and the nozzle 66, 67 may be omitted, and water may be sprayed into the drum 40 from the discharge port 83, 84.
  • the nozzle 66, 67 may be formed separately from the gasket 60 and coupled to the gasket 60, or may be disposed to be spaced apart from the gasket 60.
  • a residual water outlet 69h is formed to recover water (hereinafter referred to as 'residual water') remaining on the inner circumferential surface 62 of the gasket body.
  • the residual water outlet 69h passes through the gasket body 61, 62.
  • Wash water is sprayed to the drum from the plurality of nozzles 66 and 67 during washing. As the drum 40 rotates, wash water may spatter onto the inner circumferential surface 62 of the gasket body, and may remain on the inner circumferential surface 62 of the gasket body even after washing is finished. Since the residual water may be collected on the inner circumferential surface 62 of the gasket body and become contaminated, it is necessary to discharge the residual water from the inner circumferential surface 62 of the gasket body.
  • the water discharged through the residual water outlet 69h is recovered to the distribution pipe 80.
  • the gasket 60 includes a residual water discharge pipe 69 communicating with the residual water outlet 69h. A flow path extending the residual water outlet 69h is formed in the residual water discharge pipe 69.
  • the residual water is collected in the lower side of the inner circumferential surface of the gasket body 62 due to gravity. Accordingly, in the embodiment of the present disclosure, the residual water outlet 69h and the residual water discharge pipe 69 are formed in the lower portion of the gasket body 61, 62, thereby effectively discharging or recovering residual water.
  • the gasket 60 may be installed to be inclined downward as it progresses rearward, together with the drum 40, so that the wash water spattered on the rim portion 61a may flow to the outer diameter portion 61c. Accordingly, the residual water outlet 69h and the residual water discharge pipe 69 may be formed in the outer diameter portion 61c.
  • the gasket body 61, 62 is formed in a tubular shape, and the lower central portion 69c located in a vertical lower side from the center O of the gasket body may be the lowermost point of the gasket body 61, 62. Accordingly, the residual water outlet 69h and the residual water discharge pipe 69 may be formed in the lower central portion 69c.
  • the distribution pipe 80 includes an entrance port 86 to recover water discharged through the residual water outlet 69h.
  • the entrance port 86 is coupled to the residual water discharge pipe 69.
  • the distribution pipe 80 is formed to be relatively rigid compared to the gasket 60, so that the entrance port 86 is inserted into the residual water discharge pipe 69 to be coupled to each other.
  • the outer diameter of the entrance port 86 is formed to be slightly larger than the inner diameter (i.e., the diameter of the residual water outlet) of the residual water discharge pipe 69.
  • the entrance port 86 may be press-fitted into the residual water discharge pipe 69.
  • the transfer conduit 81, 82 is disposed to be in contact with the outer circumferential surface 61 of the gasket body, or to be slightly spaced apart from each other in order to prevent interference with a structure such as the balancer 90.
  • the protruding portion (i.e., the inflow section 85s) of the entrance port 86 among the transfer conduit 81, 82 and the outer circumferential surface 61 of the gasket body require a space for coupling the entrance port 86 and the residual water discharge pipe 69.
  • the residual water outlet 69h may be located in the lower central portion 69c of the gasket body 61, 62.
  • the lower central portion 69c is formed to enter inward from a virtual circle that is in contact with the outer circumferential surface 61 (a portion excluding the lower surface described later) of the gasket body.
  • the gasket body 61, 62 may have a lower surface 69s extending horizontally to both left and right sides from the lower central portion 69c.
  • the lower surface 69s may be a chord of the virtual circle.
  • the lower surface 69s becomes a portion located at the lowermost side of the gasket body 61, 62.
  • the residual water outlet 69h may be located on the lower surface 69s. Since the residual water outlet 69h may be located on the outer diameter portion 61c of the gasket body, the lower surface 69s may be located on the outer diameter portion 61c.
  • the residual water outlet 69h is used for recovering residual water after washing is finished.
  • water pumped by the pump 70 may be sprayed through the residual water outlet 69h.
  • the entrance port 86 may be located in the inflow section 85s.
  • the entrance port 86 may protrude from the transfer conduit 81, 82 toward the gasket body 61 and 62, and may be located in the inflow section 85s where the inlet port 85 is located. That is, the entrance port 86 may protrude from the inflow section 85s toward the gasket body 61, 62. In addition, the inlet port 85 may protrude in the opposite direction to the entrance port 86 from the inflow section 85s based on the transfer conduit 81, 82.
  • the inlet port 85 may be disposed to surround a virtual straight line extending downward from the central axis of the entrance port 86. That is, the entrance port 86 may be located in an inner side of a virtual cylindrical surface which is obtained by extending the inlet port 85 upwardly. Accordingly, the water pumped by the pump 70 may be strongly sprayed upward through the inlet port 85 and the entrance port 86.
  • the inner diameter of the entrance port 86 may be smaller than the inner diameter of the inlet port 85.
  • wash water spattered on the inner window 23 during washing may remain on the inner window 23 even after washing.
  • Water located in the upper portion 23a of the inner window 23 may flow to the lower portion 23b due to gravity. Accordingly, there is a possibility that the lower portion 23b of the inner window 23 may be stained by wash water.
  • the residual water outlet 69h may be located in front of the lower portion 23b of the inner window 23. Accordingly, the water pumped from the pump 70 is sprayed toward the inner window 23 through the residual water outlet 69h to wash the lower portion 23b of the inner window 23 and the window circumference portion 23c. Accordingly, it is possible to effectively remove stains that may occur on the inner window 23 as described above.
  • the residual water outlet 69h may be located behind a portion bent from the rim portion 61a among the inner diameter portion 61b of the gasket body.
  • one end of the circulation pipe 87 is connected to the inlet port 85 protruding from the lower portion of the distribution pipe 80, and the other end is connected to the circulation port 78 of the pump 70.
  • the circulation pipe 87 may have a straight pipe shape.
  • the circulation pipe 87 may be formed of a flexible hose, or formed to be bent.
  • the circulation pipe 87 may be made of a material that is flexible but maintains its shape, and, in the embodiment of the present disclosure, may be made of ethylene propylene diene monomer rubber (EPDM).
  • EPDM ethylene propylene diene monomer rubber
  • the circulation pipe 87 may include a bellows structure.
  • the washing machine includes a balancer 90 disposed in a front surface 31 of the tub 30.
  • the balancer 90 may be fastened to the front surface 31 of the tub 30.
  • the balancer 90 is used to reduce vibration of the tub 30, and is a weight having a certain weight.
  • the balancer 90 may include one or more balancers 90 disposed along the circumference of the front surface 31 of the tub 30.
  • the balancer 90 of the washing machine may include a first balancer 91 and a second balancer 92 respectively disposed in the left and right sides in the front surface 31 of the tub 30.
  • the first balancer 91 may be disposed in the left side of the gasket 60
  • the second balancer 92 may be disposed in the right side of the gasket.
  • the first balancer 91 and the second balancer 91 may be spaced apart from each other at the upper side and the lower side.
  • the first and second balancers 91 and 92 may have a left-right symmetrical shape based on a vertical line OV passing through the center O of the gasket 60, and may be disposed at a left-right symmetrical position based on the vertical line OV.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP20836546.0A 2019-07-05 2020-06-29 Waschmaschine Pending EP3995621A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190081470A KR20210004684A (ko) 2019-07-05 2019-07-05 세탁기
PCT/KR2020/008483 WO2021006517A1 (ko) 2019-07-05 2020-06-29 세탁기

Publications (2)

Publication Number Publication Date
EP3995621A1 true EP3995621A1 (de) 2022-05-11
EP3995621A4 EP3995621A4 (de) 2023-08-02

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EP20836546.0A Pending EP3995621A4 (de) 2019-07-05 2020-06-29 Waschmaschine

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EP (1) EP3995621A4 (de)
KR (1) KR20210004684A (de)
WO (1) WO2021006517A1 (de)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10328473A (ja) * 1997-05-29 1998-12-15 Sharp Corp ドラム式洗濯機
KR100605732B1 (ko) * 2004-08-09 2006-08-01 주식회사 대우일렉트로닉스 드럼 세탁기 도어 가스켓의 배수 호스
KR101480448B1 (ko) * 2007-09-13 2015-01-08 엘지전자 주식회사 드럼세탁기
US8776297B2 (en) * 2009-10-13 2014-07-15 Lg Electronics Inc. Laundry treating apparatus and method
KR101939085B1 (ko) 2017-06-01 2019-01-16 엘지전자 주식회사 세탁기
CN110366617A (zh) * 2016-12-28 2019-10-22 Lg电子株式会社 洗衣机
CN208562877U (zh) * 2018-06-15 2019-03-01 青岛海尔滚筒洗衣机有限公司 滚筒洗衣机及其喷淋系统和密封窗垫
KR20200070543A (ko) * 2018-12-10 2020-06-18 엘지전자 주식회사 세탁기
KR101992179B1 (ko) * 2019-01-07 2019-06-24 엘지전자 주식회사 세탁기

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WO2021006517A1 (ko) 2021-01-14
EP3995621A4 (de) 2023-08-02

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