WO2015117530A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2015117530A1
WO2015117530A1 PCT/CN2014/095721 CN2014095721W WO2015117530A1 WO 2015117530 A1 WO2015117530 A1 WO 2015117530A1 CN 2014095721 W CN2014095721 W CN 2014095721W WO 2015117530 A1 WO2015117530 A1 WO 2015117530A1
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WO
WIPO (PCT)
Prior art keywords
pulsator
water
washing
dewatering tank
blade
Prior art date
Application number
PCT/CN2014/095721
Other languages
English (en)
French (fr)
Inventor
西浦直人
马场义一
香月淳吾
Original Assignee
海尔亚洲国际株式会社
青岛海尔洗衣机有限公司
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 海尔亚洲国际株式会社, 青岛海尔洗衣机有限公司 filed Critical 海尔亚洲国际株式会社
Publication of WO2015117530A1 publication Critical patent/WO2015117530A1/zh

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    • 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
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
    • D06F17/10—Impellers
    • 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
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
    • D06F17/08—Driving arrangements for the impeller
    • 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 
    • D06F23/04—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 a vertical axis

Definitions

  • the invention relates to a washing machine.
  • the pulsator is rotatably disposed at the bottom of the washing and dewatering tank, and a water flow is generated by the rotation of the pulsator, and the laundry is stirred by the generated water flow to wash the laundry.
  • the laundry is agitated even if the pulsator itself is in contact with the laundry.
  • a pulsator having an outer pulsator having a blade at an outer peripheral portion and an inner pulsator rotatably disposed at a accommodating portion provided at a central portion of the outer pulsator can be employed.
  • the outer pulsator rotates by the torque of the drive motor, and when the outer pulsator rotates, the inner pulsator rotates following the rotation of the outer pulsator.
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 2004-321629
  • the inner pulsator is rotated by receiving a force generated by the rotation of the outer pulsator, such as a water flow generated by the rotation of the outer pulsator. Therefore, how to effectively transmit the force generated by the rotation of the outer pulsator to the inner pulsator to ensure sufficient rotation of the inner pulsator becomes a problem for further improving the washing performance.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a washing machine capable of improving washing performance.
  • a washing machine includes: an outer tub; a washing and dewatering tank rotatably disposed in the outer tub; a pulsator rotatably disposed at a bottom of the washing and dewatering tank; and a driving portion that generates The torque of the pulsator is driven.
  • the pulsator includes torque through the driving portion The rotating first pulsator and the second pulsator rotatably attached to the mounting portion provided on the surface side of the first pulsator.
  • An internal space of the second pulsator is formed between the back side of the second pulsator and the mounting portion.
  • the mounting portion is provided with a plurality of first blades that rotate in accordance with the rotation of the first pulsator in a state where water is accumulated in the washing and dewatering tank. The internal space produces water flow.
  • the configuration not only the force of the water flow generated in the washing and dewatering tank is transmitted to the surface side of the second pulsator by the rotation of the first pulsator, but also the inner space of the second pulsator is generated by the first blade.
  • the force of the water flow is transmitted to the back side of the second pulsator. Therefore, the force generated by the rotation of the outer pulsator is efficiently transmitted from the inside and the outside of the second pulsator to the second pulsator. Therefore, the second pulsator can be rotated satisfactorily, and the cleaning performance can be expected to be improved.
  • the washing machine of the present aspect may be configured such that a second blade that receives the flow of water generated by the first blade is provided on the back side of the second pulsator.
  • the second blade can effectively receive the water flow generated by the first blade, and therefore, the second pulsator can be rotated more well.
  • the washing machine of the present aspect may be configured such that a circulation water passage portion that discharges water from the upper portion is provided on an inner circumferential surface of the washing and dewatering tank, and is disposed between the pulsator and the bottom of the washing and dewatering tank a pump chamber connected to the circulating water passage portion, a pumping blade formed on a back side of the first pulsator, the pumping blade being housed in the pump chamber, and between the washing and dewatering tank and the outer tank
  • the water is sucked up and sent to the circulating water passage portion, and the pulsator is provided with an inflow path to the internal space and an outflow path from the internal space, the inflow path to the internal space and the source
  • the outflow path of the internal space is for flowing water in the washing and dewatering tank into the internal space when the first vane rotates, and flows out from the internal space to the pump chamber.
  • the inner pulsator is provided with a first water-passing hole as the inflow path that is connected to the inner space, and the first blade is provided on the outer peripheral side of the mounting portion a second water-passing hole of the outflow path connected to the pump chamber.
  • the first blade rotates, water in the washing and dewatering tank flows into the inner space through the first water-passing hole, and the inflowing water passes through the second water-passing hole from the inner space to the The pump chamber flows out.
  • the washing machine of the present aspect may be configured such that a drain hole is formed in the mounting portion, The drain hole is for discharging water accumulated in the internal space to the bottom of the washing and dewatering tank when draining from the washing and dewatering tank.
  • water accumulated in the internal space of the second pulsator can be smoothly discharged during the draining process.
  • Fig. 1 is a side cross-sectional view showing the configuration of a fully automatic washing machine of an embodiment.
  • Fig. 2 is a plan cross-sectional view schematically showing a configuration of a filter unit of the embodiment.
  • Fig. 3 is a perspective view of the pulsator in an assembled state of the embodiment.
  • Fig. 4 is an exploded perspective view of the pulsator of the embodiment.
  • Fig. 5 is a plan view of the outer pulsator of the embodiment.
  • Fig. 6 is a cross-sectional view taken along line A-A' of Fig. 5, a cross-sectional view taken along line B-B', and a cross-sectional view taken along line C-C'.
  • FIG. 7 is an enlarged perspective view showing a main part of a configuration of a mounting portion of an outer pulsator according to an embodiment.
  • FIG. 8 is an enlarged plan view showing a main part of a configuration of a mounting portion of an outer pulsator according to an embodiment.
  • Fig. 9 is a perspective view of the outer pulsator as seen from the back side of the embodiment.
  • Fig. 10 is a cross-sectional perspective view of the inner pulsator of the embodiment.
  • Fig. 11 is a plan view of the inner pulsator of the embodiment.
  • Fig. 12 is a perspective view of the inner pulsator as seen from the back side in the embodiment.
  • FIG. 13 is a perspective view of the stopper viewed from the front side in the embodiment, a perspective view of the stopper viewed from the back side, and a cross-sectional perspective view of the stopper.
  • Fig. 14 is a perspective view of the cover viewed from the front side and a perspective view of the cover as viewed from the back side in the embodiment.
  • Fig. 15 is a perspective view of the gasket of the embodiment.
  • Fig. 16 is a view for explaining a procedure of assembling a pulsator according to an embodiment.
  • FIG. 17 is a view for explaining an operation of the inner pulsator when the outer pulsator of the embodiment rotates left and right.
  • FIG. 18 is a view showing a state in which the laundry is moved by the outer blade of the outer pulsator according to the embodiment.
  • FIG. 19 is a view for explaining a configuration for reducing the load applied to the external pulsator when the load of the laundry is applied to the inner pulsator from above.
  • FIG. 20 is an enlarged cross-sectional perspective view showing a main part of the fully automatic washing machine in a state in which water is supplied to the pump chamber by the operation of the pumping blades and the surface blades of the outer pulsator according to the embodiment.
  • 21 is an enlarged cross-sectional perspective view showing a main part of the fully automatic washing machine in the case where the internal space of the inner pulsator is drained in the embodiment.
  • Fig. 22 is an enlarged longitudinal sectional view showing a central portion of a pulsator according to Modification 1.
  • Fig. 23 is a perspective view of the pulsator in the assembled state of Modification 2.
  • Fig. 24 is an exploded perspective view of the pulsator of Modification 2.
  • Fig. 25 is an enlarged longitudinal sectional view of a main part of a pulsator according to a second modification.
  • FIG. 1 is a side cross-sectional view showing the structure of a fully automatic washing machine 1.
  • the fully automatic washing machine 1 is provided with a casing 10 that constitutes an appearance.
  • the casing 10 includes a square tubular body portion 11 that is open at the upper and lower sides, an upper surface plate 12 that covers the upper surface of the body portion 11, and a leg portion 13 that supports the body portion 11.
  • An input port 14 for washing is formed on the upper surface plate 12.
  • the inlet 14 is covered by a switchable upper cover 15.
  • the outer tank 20 is elastically suspended and supported by four booms 21 having anti-vibration means.
  • a washing and dewatering tank 22 is disposed in the outer tank 20.
  • a plurality of dewatering holes 22a and a plurality of convex portions 22b are formed on the inner circumferential surface of the washing and dewatering tank 22.
  • a balance ring 23 is provided at an upper portion of the washing and dewatering tank 22.
  • a pulsator 24 is disposed at the bottom of the outer tank 20.
  • a plurality of pumping blades 190 radially extending from the center of the back surface are formed on the back surface of the pulsator 24. These pumping blades 190 are disposed in a pump chamber 25 formed between the back surface of the pulsator 24 and the bottom surface of the washing and dewatering tank 22.
  • a plurality of circulating water passage portions 26 extending in the vertical direction are disposed on the inner circumferential surface of the washing and dewatering tank 22.
  • the lower end portion of each of the circulating water passage portions 26 is connected to the pump chamber 25.
  • a slit-shaped discharge port 26a is formed in an upper portion of each of the circulating water passage portions 26.
  • a filter unit 27 is provided in one of the circulation water passage portions 26.
  • 2(a) to 2(c) are plan cross-sectional views schematically showing the configuration of the filter unit 27.
  • the filter unit 27 is provided with a filter case 27a that is open at the rear.
  • An opening portion 27b is formed on the front surface of the filter case 27a, and a lint of a bag as a mesh fabric is attached to the opening portion 27b.
  • the filter case 27a is attached to the circulating water passage portion 26 so as to be movable in the right and left direction by a predetermined angle around the rotation shaft 27d.
  • FIGS. 2(b) and 2(c) when the pulsator 24 rotates and a water flow in the left or right direction is generated, the filter unit 27 is inclined in the left direction or the right direction.
  • a drive unit 30 that generates torque for driving the washing and dewatering tank 22 and the pulsator 24 is disposed at the outer bottom of the outer tank 20.
  • the drive unit 30 corresponds to the drive unit of the present invention.
  • the drive unit 30 includes a drive motor 31 and a transmission mechanism portion 32.
  • the transmission mechanism portion 32 has a clutch mechanism by which the torque of the drive motor 31 is transmitted only to the pulsator 24 during the cleaning process and the rinsing process, and only the pulsator 24 is rotated, during the dehydration process, The torque of the drive motor 31 is transmitted to the pulsator 24 and the washing and dewatering tank 22, and the pulsator 24 and the washing and dewatering tank 22 are integrally rotated.
  • the transmission mechanism unit 32 has a speed reduction mechanism. During the cleaning process and the rinsing process, the pulsator 24 rotates at a rotation speed at which the rotation speed of the drive motor 31 becomes lower with the reduction ratio of the speed reduction mechanism. Further, the transmission mechanism portion 32 has a hand brake that brakes the washing and dewatering tank 22, a rotation that allows the washing and dewatering tank 22 to rotate in the fastening direction of the belt brake, and prevents rotation of the washing and dewatering tank 22 in the loosening direction of the belt brake. One-way clutch.
  • the right-hand direction becomes the fastening direction of the brake band as viewed from above
  • the left-hand direction becomes the loose direction of the band brake, that is, the direction in which the rotation of the washing and dewatering tank 22 is blocked by the one-way clutch.
  • a drain port portion 20a is formed at the outer bottom of the outer tub 20.
  • a drain valve 40 is provided in the drain port portion 20a.
  • the drain valve 40 is connected to the drain pipe 41. When the drain valve 40 is opened, the water accumulated in the washing and dewatering tank 22 and the outer tank 20 is discharged to the outside of the washing machine through the drain pipe 41.
  • a water supply unit 50 for supplying tap water into the washing and dewatering tank 22 is disposed at the rear of the upper surface plate 12.
  • the water supply unit 50 has a water supply valve 51.
  • the water supply valve 51 is connected to the faucet. When the water supply valve 51 is opened, tap water is introduced from the faucet to the water supply unit 50. The introduced tap water flows out from the water injection port 52 of the water supply unit 50 into the washing and dewatering tank 22.
  • the fully automatic washing machine 1 performs a washing operation of various operating procedures.
  • the washing operation includes a washing process, an intermediate dehydration process, a rinsing process, and a final dehydration process.
  • the pulsator 24 is rotated in the right direction and the left direction in a state where water is accumulated in the washing and dewatering tank 22.
  • the water flow is generated in the washing and dewatering tank 22 by the rotation of the pulsator 24.
  • the laundry is washed with the generated water stream and the detergent contained in the water.
  • the laundry is rinsed with the resulting water stream.
  • the pumping blade 190 rotates within the pump chamber 25.
  • the washing dewatering tank 22 and the outer tank 20 The water is sucked into the pump chamber 25 from the water outlet 22c provided on the bottom surface of the washing and dewatering tank 22.
  • the water sucked into the pump chamber 25 is sent to the respective circulating water passage portions 26, and the water sent to the respective circulating water passage portions 26 flows out from the discharge port 26a toward the center of the washing and dewatering tank 22.
  • the washing material above the washing and dewatering tank 22 can also contain water sufficiently.
  • the washing and dewatering tank 22 and the pulsator 24 are integrally rotated at a high speed.
  • the laundry is dehydrated by the action of the centrifugal force generated in the washing and dewatering tank 22.
  • the fully automatic washing machine 1 of the present embodiment is characterized by the structure of the pulsator 24.
  • the configuration of the pulsator 24 will be described in detail.
  • FIG. 3 is a perspective view of the pulsator 24 in an assembled state.
  • 4 is an exploded perspective view of the pulsator 24.
  • 5 is a plan view of the outer pulsator 100
  • FIGS. 6(a), (b) and (c) are a cross-sectional view taken along line A-A', a cross-sectional view taken along line B-B', and a cross-sectional view taken along line C-C' of FIG. 5, respectively.
  • FIG. 7 and FIG. 8 are an enlarged perspective view and an enlarged plan view, respectively, showing a configuration of a mounting portion 110 of the outer pulsator 100.
  • Fig. 9 is a perspective view of the outer pulsator 100 as viewed from the back.
  • FIGS. 10, 11 and 12 are a cross-sectional perspective view of the inner pulsator 200, a plan view of the inner pulsator 200, and a perspective view of the inner pulsator 200 as viewed from the back side.
  • FIGS. 13(a), 13(b) and 13(c) are a perspective view of the stopper 300 viewed from the front side, a perspective view of the stopper 300 viewed from the back side, and a cross-sectional perspective view of the stopper 300, respectively.
  • 14(a) and 14(b) are a perspective view of the cover 400 as seen from the front side and a perspective view of the cover 400 as seen from the back side.
  • FIG. 15 is a perspective view of the gasket 500.
  • the pulsator 24 includes an outer pulsator 100, an inner pulsator 200 that is rotatably disposed at a central portion of the outer pulsator 100, and a stopper 300 that restricts the inner pulsator 200 from moving upward.
  • the stopper 300 is fixed to the three second screws 700 on the outer pulsator 100.
  • the outer pulsator 100 corresponds to the first pulsator of the present invention
  • the inner pulsator 200 corresponds to the second pulsator of the present invention.
  • the outer pulsator 100 has a disk shape and is formed of a resin material such as a polypropylene resin.
  • a recessed mounting portion 110 in which the inner pulsator 200 is rotatably mounted is formed at a central portion of the surface of the outer pulsator 100.
  • five outer blades 120 are formed at substantially equal intervals in the outer region of the mounting portion 110.
  • a first dewatering hole portion 130 composed of a plurality of holes is formed between the adjacent two outer blades 120.
  • the outer blade 120 has a shape close to a hook shape as viewed from above.
  • the outer blade 120 has a side substantially perpendicular to the surface on which the outer pulsator 100 rotates from the lower portion of the outer blade 120 in the side facing the left-hand direction.
  • the outer blade 120 has a substantially fan-shaped inclined surface 122 that is reduced in the right-hand direction on the side facing the right-hand direction. As shown in FIGS. 6( a ) to 6 ( c ), the inclined surface 122 decreases in gradient from the inner circumferential side to the outer circumferential side of the outer pulsator 100 .
  • the outer peripheral portion 123 of the outer blade 120 is inclined so as to gradually decrease in the right-hand direction.
  • the outer blade 120 has a top portion 120a that is coupled to the cliff face 121 and the inclined face 122, and a boss portion 124 that protrudes upward is formed on the top portion 120a.
  • the boss portion 124 has an elongated shape extending from the inner peripheral side to the outer peripheral side of the outer pulsator 100, and the upper surface has a flat shape.
  • an annular groove portion 140 is formed on the outer peripheral edge.
  • Five first dewatering holes 141 are formed in the groove portion 140 at substantially equal intervals.
  • the first dewatering hole 141 corresponds to the drain hole of the present invention.
  • the height of the groove portion 140 is higher than the bottom surface of the mounting portion 110 and lower than the surface of the outer pulsator 100.
  • a cylindrical mounting table 150 is formed at a central portion of the mounting portion 110. On the surface of the mounting table 150, two positioning projections 151 are formed at intervals of substantially 180 degrees. Further, three first mounting holes 152 are formed on the surface of the mounting table 150 at substantially equal intervals. The positioning protrusion 151 and the first mounting hole 152 are for fixing the gasket 500 to the mounting table 150.
  • a cylindrical rotating shaft portion 160 is formed at a central portion of the mounting table 150.
  • a circular shaft hole 161 is formed at the center, and a stopper fixing portion 162 to which the stopper 300 is attached is formed so as to surround the shaft hole 161.
  • the stopper fixing portion 162 includes three mounting bosses 163 that are disposed at substantially equal intervals, and arcuate wall portions 164 that are provided on both sides of each of the mounting bosses 163.
  • a second mounting hole 165 is formed in the mounting boss 163.
  • a slit portion 166 is formed between the adjacent two wall portions 164.
  • a plurality of surface blades 170 are radially formed from the mounting table 150.
  • the surface blade 170 corresponds to the first blade of the present invention.
  • the surface blade 170 is coupled to the groove portion 140.
  • the surface blade 170 has the same height from the mounting table 150 side to the substantially central portion, and gradually increases from the central portion of the surface blade 170 to the groove portion 140 toward the groove portion 140.
  • the area between the mounting table 150 and the groove portion 140 in the mounting portion 110 is divided by the surface blade 170, whereby the first dividing chamber 171 and the second dividing are alternately disposed along the rotation direction of the outer pulsator 100 in this region Room 172.
  • the first dividing chamber 171 two second dewatering holes 173 are formed in the bottom surface, and in the second dividing chamber 172, a water passing hole 174 is formed in the outer peripheral wall.
  • the second dewatering hole 173 corresponds to the drain hole of the present invention, and the water passing hole 174 corresponds to the drain hole, the outflow path, and the second water passing hole of the present invention.
  • an outer boss 180 is formed at the center portion.
  • a metal inner boss 181 is provided inside the outer boss 180.
  • the inner boss 181 is embedded in the outer boss 180 by insert molding.
  • a wing shaft 33 for rotating the pulsator 24 is attached to the inner boss 181 (see Fig. 17 (b)).
  • a plurality of pumping blades 190 are radially formed from the outer boss 180.
  • the inner pulsator 200 has an inverted bowl shape and is formed of a resin material having a specific gravity smaller than that of water.
  • the material of the inner pulsator 200 is a polypropylene resin (PP).
  • the material of the inner pulsator 200 may be other resin materials having a smaller specific gravity than water, and may be, for example, a polyethylene resin (PE) or an ethylene-vinyl acetate copolymer resin (EVA).
  • the inner pulsator 200 has a circular opening portion 210 at the center.
  • a plurality of inner blades 220 are radially formed from the outer periphery of the opening 210.
  • the inner blade 220 is formed such that the inclination of the first side surface 221 facing the right-hand direction is steeper than the inclination of the second side surface 222 facing the left-hand direction.
  • a second dewatering hole portion 223 composed of a plurality of holes is formed in the second side surface 222.
  • the second dewatering hole portion 223 corresponds to the inflow path and the first water passing hole of the present invention.
  • a substantially cylindrical boss portion 230 is formed on the back surface of the inner pulsator 200 so as to hang down from the outer periphery of the opening portion 210.
  • the boss portion 230 includes an upper tubular portion 231 and a lower tubular portion 232 that is connected to the upper tubular portion 231.
  • the outer diameter and the inner diameter of the lower tubular portion 232 are slightly smaller than the outer diameter and inner diameter of the upper tubular portion 231.
  • an annular flange portion 233 that protrudes inward is formed at a boundary portion between the upper tubular portion 231 and the lower tubular portion 232.
  • a stepped surface 234 which is lower than the upper surface of the inner pulsator 200 is formed at the upper end portion.
  • the two slit grooves 235 are formed at positions facing each other, and further, two rectangular engaging holes 236 are formed so as to be shifted by approximately 90 degrees from the two slits.
  • a plurality of reinforcing ribs 237 extending vertically are formed over the entire circumference in order to reinforce the boss portion 230.
  • a back blade 240 that radially extends from the boss portion 230 to the outer peripheral portion of the inner pulsator 200 is formed at a position of all the valley portions between the adjacent two inner blades 220.
  • the back blade 240 corresponds to the second blade of the present invention.
  • an annular rib 241 that hangs from the outer peripheral edge is formed on the back surface of the inner pulsator 200.
  • the stopper 300 has a circular shape as viewed from above.
  • An annular guard rib 311 is formed on the outer peripheral portion 310 of the stopper 300.
  • three insertion holes 312 through which the second screw 700 passes are formed at substantially equal intervals in the outer peripheral portion 310.
  • a mortar-shaped recess 320 is formed inside the outer peripheral portion 310, and a circular opening is formed in the center of the recess 320. 321.
  • the cylindrical portion 330 is formed on the back surface of the recess 320 so as to hang down from the outer periphery of the opening portion 321 .
  • the outer diameter of the front end portion 331 of the cylindrical portion 330 is smaller than the outer diameter of the other portion of the cylindrical portion 330.
  • a dehydration port 332 is formed in the cylindrical portion 330.
  • a boss receiving portion 340 that accommodates the mounting boss 163 of the stopper fixing portion 162 is formed on the back surface of the recess 320.
  • three guide ribs 341 are formed on the back surface of the recess 320. Each of the guide ribs 341 is located in the middle of the two insertion holes 312.
  • the cover 400 is composed of a disk-shaped top plate portion 410 and a peripheral wall portion 420 which is suspended from the outer peripheral edge of the top plate portion 410 and has an outer diameter slightly smaller than the top plate portion 410.
  • Two guide ribs 421 are formed on the outer peripheral surface of the peripheral wall portion 420 at intervals of substantially 180 degrees. Further, on the outer peripheral surface of the peripheral wall portion 420, two claw portions 422 are formed at positions shifted from the two guide ribs 421 by substantially 90 degrees.
  • the cover 400 is formed of a resin material having a specific gravity lower than that of water, for example, a polypropylene resin (PP).
  • PP polypropylene resin
  • the cover 400 may be formed of a polyethylene resin (PE), an ethylene-vinyl acetate copolymer resin (EVA), or the like.
  • the gasket 500 has a ring-shaped disk shape and is formed of a material having a friction coefficient smaller than that of the resin material forming the outer pulsator 100 and excellent in wear resistance, such as stainless steel.
  • the inner diameter D1 is slightly larger than the outer diameter of the rotating shaft portion 160, and the outer diameter D2 is substantially equal to the outer diameter of the mounting table 150.
  • two positioning holes 510 are formed by a space spaced apart by approximately 180 degrees.
  • six slit holes 520 through which the second screw 700 passes are formed at substantially equal intervals.
  • the gasket 500 may also be formed of a metal material coated with polytetrafluorostyrene.
  • 16(a) to 16(d) are diagrams for explaining the procedure of assembling the pulsator 24.
  • the gasket 500 When assembling the pulsator 24, first, the gasket 500 is placed on the mounting table 150 of the outer pulsator 100. At this time, each of the positioning projections 151 is inserted into each of the positioning holes 510. Any three of the six cutout holes 520 are matched with the three first mounting holes 152. The three first screws 600 are screwed to the three first mounting holes 152, and the washer 500 is fixed to the mounting table 150 as shown in Fig. 16 (a).
  • the inner pulsator 200 is placed on the mounting portion 110.
  • the rotating shaft portion 160 is inserted into the boss portion 230, and the boss portion 230 is placed on the washer 500 attached to the mounting table 150.
  • the annular rib 241 on the outer peripheral edge of the inner pulsator 200 and the groove portion 140 on the outer peripheral edge of the attachment portion 110 have a predetermined interval and face each other. Thereby, foreign matter can be prevented from being mixed into the inner pulsator 200 and the mounting portion 110.
  • the space between them that is, the internal space of the inner pulsator 200.
  • the stopper 300 is inserted into the inside of the boss portion 230, and the stopper 300 is attached to the stopper fixing portion 162.
  • the front end portion 331 of the cylindrical portion 330 of the stopper 300 is inserted into the shaft hole 161 of the rotating shaft portion 160, and the guide rib 341 of the stopper 300 is inserted into the slit portion 166 of the stopper fixing portion 162.
  • the boss accommodating portions 340 of the stopper 300 the upper end portions of the respective mounting bosses 163 of the stopper fixing portion 162, the respective insertion holes 312 of the stopper 300, and the respective mounting bosses 163 are accommodated.
  • the two mounting holes 165 match.
  • the three second screws 700 are screwed to the three second mounting holes 165, and the stopper 300 is fixed to the stopper fixing portion 162 as shown in Fig. 16(c).
  • the outer peripheral portion 310 of the stopper 300 overlaps the upper portion of the flange portion 233 of the boss portion 230, and when the inner pulsator 200 moves upward, the flange portion 233 collides with the outer peripheral portion 310 of the stopper 300.
  • the upward movement of the inner pulsator 200 is restricted by the stopper 300, and the inner pulsator 200 is not detached from the rotating shaft portion 160.
  • the outer peripheral portion 310 of the stopper 300 and the inner wall surfaces of the guard rib 311 and the boss portion 230 have a predetermined amount of clearance and are opposed to each other.
  • the stopper 300 functions as a rotation axis that becomes the rotation center of the inner pulsator 200 together with the rotation shaft portion 160.
  • the inner pulsator 200 can move the amount of the above gap between the inner peripheral wall of the boss portion 230 and the stopper 300 in the radial direction.
  • the opening portion 210 of the upper surface of the inner pulsator 200 is blocked by the cover 400.
  • the guide rib 421 of the cover 400 is inserted into the slit groove 235 of the boss portion 230.
  • the cover 400 is fitted into the boss portion 230 until the back surface of the top plate portion 410 collides with the step surface 234 of the boss portion 230, the claw portion 422 of the cover 400 and the upper end portion of the engaging hole 236 of the boss portion 230 are stuck. Hehe. Thereby, the cover 400 does not come off upward.
  • FIGS. 17(a) and 17(b) are views for explaining the operation of the inner pulsator 200 when the outer pulsator 100 rotates left and right.
  • 17(a) is a perspective view of the pulsator 24
  • FIG. 17(b) is an enlarged cross-sectional perspective view of the center portion of the pulsator 24.
  • the outer pulsator 100 is coupled to the wing shaft 33, and when the wing shaft 33 is rotated by the torque of the drive motor 31, the outer pulsator 100 rotates.
  • the inner pulsator 200 is not connected to the wing shaft 33, and therefore cannot be directly driven by the drive motor 31.
  • the inner blade 220 of the inner pulsator 200 receives a strong flow of water with the first side 221 of the desired right-handed direction.
  • the first side 221 forms a steep gradient that is easy to accept water flow, and therefore, the inner pulsator 200 rotates left-handed at a rapid speed.
  • the inclined surface 122 of the outer blade 120 which is likely to become the main water resistance pushes the water, and therefore, a weaker water flow is generated.
  • the inner blade 220 of the inner pulsator 200 receives a weaker flow of water with the second side 222 of the desired left-handed direction.
  • the second side surface 222 forms a gentle gradient with respect to the first side surface 221, and it is difficult to receive the water flow. Therefore, the inner pulsator 200 rotates rightward at a lower speed.
  • the surface blade 170 formed on the mounting portion 110 rotates, and therefore the water accumulated in the inner space of the inner pulsator 200 is stirred by the surface blade 170.
  • a flow of water is generated in the internal space of the inner pulsator 200, and a force of the generated water flow acts on the back surface of the inner pulsator 200.
  • the inner pulsator 200 rotates not only according to the force of the water flow generated by the outer blade 120 of the outer pulsator 100 but also according to the force of the water flow generated by the surface blade 170 of the outer pulsator 100.
  • the back surface blade 240 is formed on the back surface of the inner pulsator 200, the inner pulsator 200 can effectively receive the force of the water flow generated by the surface blade 170 by the back surface blade 240.
  • the boss portion 230 may come into contact with the stopper 300 or the mounting table 150, or the outer peripheral edge of the inner pulsator 200 may come into contact with the outer peripheral edge of the mounting portion 110.
  • the inner pulsator 200 rotates even if it receives force from the contact portion.
  • the outer pulsator 100 is rotated by the torque of the drive motor 31, and the inner pulsator 200 passes the force of the water flow generated by the rotation of the outer pulsator 100 or the force obtained by the contact with the outer pulsator 100. Rotate. Therefore, the rotation speed of the inner pulsator 200 is slower than the rotation speed of the outer pulsator 100. Due to the difference in rotational speed between the outer pulsator 100 and the inner pulsator 200, a complicated flow of water is generated in the washing and dewatering tank 22, and the movement of the laundry in the washing and dewatering tank 22 becomes complicated. Thereby, the friction between the laundry materials is promoted, and therefore, the improvement in the washing performance can be expected.
  • the pulsator 24 has a configuration in which a water flow is generated in the internal space of the inner pulsator 200 by the surface blade 170 provided on the mounting portion 110 of the outer pulsator 100, and the water flow is generated.
  • the force is transmitted to the back of the inner pulsator 200.
  • the inner pulsator 200 can be rotated well with the rotation of the outer pulsator 100.
  • the back blade of the inner pulsator 200 can be utilized.
  • the 240 effectively receives the flow of water generated by the surface blade 170, and thus, the inner pulsator 200 can be rotated more well.
  • the washing can be satisfactorily stirred by the inner pulsator 200, improvement in washing performance can be expected. Further, in the cleaning process, the water containing the detergent is well stirred by the surface blade 170 and the back blade 240 in the internal space of the inner pulsator 200, so that the detergent can be well foamed.
  • the first side surface 221 of the steep gradient receives a strong water flow generated by the cliff surface 121 of the outer blade 120
  • the second side surface 222 of the gentle gradient receives the weaker surface of the inclined surface 122 of the outer blade 120.
  • the flow of water thereby produces a large difference in rotational speed with left-handed and right-handed rotations in the inner pulsator 200.
  • the flow of water generated by the inner pulsator 200 becomes complicated, and the movement of the laundry generated by the contact with the inner pulsator 200 is also complicated, and therefore, the improvement of the washing performance can be expected.
  • the filter unit 27 since a strong water flow caused by the cliff surface 121 of the outer blade 120 is generated in the washing and dewatering tank 22, the amount of water passing through the filter unit 27 is increased. Thereby, the recovery efficiency of the lint by the filter unit 27 is improved.
  • 18(a) and 18(b) are diagrams showing a state in which the laundry is rotated by the outer blade 120 of the outer pulsator 100.
  • Fig. 18 (a) when the pulsator 24 is rotated in the left-hand direction, the cliff face 121 of the outer blade 120 of the outer pulsator 100 comes into contact with the laundry.
  • the cliff face 121 is erected substantially perpendicularly to the side on which the pulsator 24 rotates, and therefore, the laundry is strongly pushed by the cliff face 121. Thereby, the movement of the laundry in the circumferential direction of the washing and dewatering tank 22 is active.
  • Fig. 18 (b) when the pulsator 24 is rotated in the right-hand direction, the inclined surface 122 of the outer blade 120 of the outer pulsator 100 comes into contact with the laundry.
  • the inclined surface 122 has a shape that gradually becomes gentle with the outer peripheral side from the inner peripheral side of the outer pulsator 100. Therefore, the laundry that has come into contact moves toward the outer peripheral side while being lifted up by the inclined surface 122. Thereby, the movement of the laundry in the radial direction of the washing and dewatering tank 22 becomes active.
  • the rotation direction of the pulsator 24 that acts on the cliff surface 121 of the outer blade 120 is the same left-hand direction as the direction in which the one-way clutch of the transmission mechanism portion 32 prevents the rotation of the washing and dewatering tank 22 from being rotated.
  • the laundry When the laundry is largely moved by the cliff surface 121, the laundry is in contact with the inner wall surface of the washing and dewatering tank 22, particularly the convex portion 22b or the circulating water passage portion 26 existing on the inner wall surface, thereby The washing and dewatering tank 22 imparts a rotational force for rotating the washing and dewatering tank 22.
  • the rotation in the right-hand direction of the washing and dewatering tank 22 is blocked by the belt brake of the transmission mechanism portion 32, but in the case where a large rotational force is applied in the right-hand direction, the belt brake is slid, and the washing and dewatering tank 22 is easily rotated. .
  • the laundry When the washing and dewatering tank 22 is rotated, the laundry is less likely to rub against the inner wall surface or the convex portion 22b of the washing and dewatering tank 22, and it is difficult to obtain the washing effect by the inner wall surface of the washing and dewatering tank 22 or the convex portion 22b.
  • an abnormal noise may be generated from the belt brake when the washing and dewatering tank 22 is rotated.
  • the direction in which the laundry is strongly pushed by the cliff face 121 is the same as the direction in which the rotation of the washing and dewatering tank 22 is blocked by the one-way clutch. Therefore, even if the laundry is vigorously brought into contact with the washing and dewatering tank 22, the washing and dewatering tank 22 can be prevented from rotating, and the washing effect by the inner wall surface of the washing and dewatering tank 22 or the convex portion 22b can be sufficiently obtained. In addition, the occurrence of abnormal noise from the band brake can be prevented.
  • FIG. 19 is a view for explaining a configuration for reducing the load applied to the external pulsator 100 when the load of the laundry is applied to the inner pulsator 200 from above, and is an enlarged longitudinal cross-sectional view of the central portion of the pulsator 24.
  • the inner pulsator 200 is formed of a material having a specific gravity smaller than that of water. Further, as shown in FIG. 19, in a state where the lower end of the boss portion 230 of the inner pulsator 200 is in contact with the surface of the gasket 500, the flange portion 233 of the boss portion 230 and the outer peripheral portion 310 of the stopper 300 are A predetermined amount of the gap S in which the inner pulsator 200 can move upward is provided.
  • the gap S is set to a value much larger than the allowable tolerance of the design, and is, for example, about 1.5 mm when the allowable tolerance is about 0.5 mm.
  • the inner pulsator 200 can be floated by the amount of the gap S by the buoyancy of the water.
  • the inner pulsator 200 can float upward to some extent. Therefore, when the load Fa of the laundry is applied to the inner pulsator 200, the inner pulsator 230 applies the mounting table 150 of the outer pulsator 100 via the boss portion 230. The buoyancy Fc of the load Fb acting by the inner pulsator 200 is alleviated. Thereby, the load applied to the inner pulsator 200 can be suppressed, and the frictional resistance between the boss portion 230 of the inner pulsator 200 and the gasket 500 can be greatly increased.
  • the gasket 500 having a small friction coefficient and excellent wear resistance is disposed between the boss portion 230 and the mounting table 150, that is, the sliding portion of the inner pulsator 200 and the outer pulsator 100. Therefore, the gasket 500 can be further provided.
  • the increase in the frictional resistance generated between the pulsator 200 and the outer pulsator 100 when a large load is applied to the inner pulsator 200 is suppressed. Thereby, the decrease in the rotational speed of the outer pulsator 100 can be further suppressed.
  • the outer pulsator 100 and the inner pulsator 200 are formed of a resin material, when the inner pulsator 200 slides on the mounting table 150, the inner pulsator 200 and the mounting table 150 may be welded by heat generated by sliding. Thus, the inner pulsator 200 is difficult to rotate. In the present embodiment, since the inner pulsator 200 slides on the gasket 500, welding of the inner pulsator 200 and the mounting table 150 can be prevented.
  • the pulsator 24 is configured to rotate the laundry well by the cliff surface 121 of the outer blade 120. Therefore, the load applied to the outer pulsator 100 tends to increase.
  • the load applied from the inner pulsator 200 is reduced. Therefore, it is not necessary to increase the torque of the drive motor 31 by the amount, and the cost can be reduced.
  • FIG. 20 is an enlarged cross-sectional perspective view showing a main part of the fully automatic washing machine 1 in a state in which water is supplied to the pump chamber 25 by the operation of the water-absorbent blade 190 and the surface blade 170 of the outer pulsator 100.
  • the water-absorbent blade 190 formed on the back surface of the outer pulsator 100 is housed in the pump chamber 25 of the washing and dewatering tank 22 .
  • the pumping blade 190 rotates in the pump chamber 25 as the outer pulsator 100 rotates, water between the washing dewatering tank 22 and the outer tub 20 is sucked into the pump chamber 25 from the water outlet 22c as indicated by a broken line arrow in FIG. Inside. The sucked water is sent to the circulation water path portion 26.
  • the water passing hole 174 connected to the pump chamber 25 is provided in the second divided chamber 172 divided by the two surface blades 170.
  • the surface blade 170 rotates in accordance with the rotation of the outer pulsator 100, as shown by the solid arrow in FIG. 20
  • the outer peripheral edge of the inner pulsator 200 and the gap L of the groove portion 140 of the mounting portion 110 are inside and outside.
  • the second dewatering hole portion 223 of the pulsator 200 flows into the internal space of the inner pulsator 200 in the washing and dewatering tank 22.
  • the inflowing water flows from the inner peripheral side to the outer peripheral side in the second partition chamber 172, and flows out from the water passing hole 174 to the pump chamber 25.
  • the water that has flowed into the pump chamber 25 from the internal space of the inner pulsator 200 is sent to the circulating water passage portion 26.
  • the outer circumferential edge of the inner pulsator 200 and the gap L of the groove portion 140 of the attachment portion 110 are equivalent to the second dewatering hole portion 223, and correspond to the inflow path of the present invention.
  • not only the water between the dewatering tank 22 and the outer tank 20 but also the water in the washing and dewatering tank 22 can be sent to the pump chamber 25, so that the amount of water supplied to the circulating water passage portion 26 can be increased.
  • the laundry in the washing and dewatering tank 22 can be sufficiently watered from the discharge port 26a of the circulating water passage portion 26.
  • FIG. 21 is an enlarged cross-sectional perspective view showing a main part of the fully automatic washing machine 1 in a state where water is drained from the internal space of the inner pulsator 200.
  • the water accumulated in the inner space of the inner pulsator 200 passes through the second dewatering holes 173 and the second of the first partitioning chamber 171 as indicated by the solid arrows in FIG.
  • the water passing hole 174 of the dividing chamber 172 is discharged to the bottom of the washing and dewatering tank 22.
  • the water accumulated in the stopper 300 is discharged into the first division chamber 171 or the second division chamber 172 through the dehydration port 332 as indicated by a broken line arrow.
  • the water accumulated in the groove portion 140 is discharged to the bottom of the washing and dewatering tank 22 through the first dewatering hole 141.
  • the first dewatering hole 141, the second dewatering hole 173, and the water passing hole 174 which are the drainage holes connected to the bottom of the washing and dewatering tank 22 are provided in the mounting portion 110. Thereby, water accumulated in the internal space of the inner pulsator 200 can be smoothly discharged during the draining process.
  • the second dewatering hole 173 is provided only in the first dividing chamber 171, and the water passing hole 174 is provided only in the second dividing chamber 172. That is, the second dewatering holes 173 and the water passing holes 174 are alternately disposed in all the divided chambers divided by the surface blades 170. Thereby, it is possible to suppress the decrease in the strength of the outer pulsator 24 caused by the provision of the second dewatering holes 173 and the water passing holes 174 as much as possible.
  • Fig. 22 is an enlarged longitudinal sectional view showing a central portion of a pulsator 24 according to Modification 1.
  • the silver ion eluting member 800 is housed between the stopper 300 and the cover 400. That is, the space between the stopper 300 and the cover 400 serves as the accommodating portion 810 of the silver ion eluting member 800.
  • the silver ion eluting member 800 has a structure in which a plurality of silver ion eluting chips 802 are housed in a water-permeable bag body 801 formed of a nonwoven fabric or the like.
  • the silver ion elution pellet 802 is, for example, ion beads in which silver is mixed in a soluble glass member.
  • the accommodating portion 810 for accommodating the silver ion eluting member 800 is provided on the pulsator 24, the silver ion eluting small piece 802 can be brought into contact with the water accumulated in the washing and dewatering tank 22 for a long time. Silver ions can be sufficiently eluted from the silver ion elution chip 802. Therefore, it is expected to improve the sterilizing effect of the laundry by silver ions.
  • FIG. 23 is a perspective view of the pulsator 24 in an assembled state.
  • FIG. 24 is an exploded perspective view of the pulsator 24.
  • Fig. 25 is an enlarged longitudinal sectional view showing the main part of the pulsator 24.
  • the pulsator 24 of the present modification includes the outer pulsator 100, the inner pulsator 200, the stopper 350, and two screws 750 for fixing the stopper 350 to the outer pulsator 100.
  • the pulsator 24 of the present modification does not have the cover 400 and the gasket 500.
  • the shapes of the mounting table 150, the rotating shaft portion 160, and the surface blade 170 are different from those of the above embodiment.
  • the mounting table 150 has a high height and a small outer shape.
  • two positioning holes 167 and two insertion holes 168 are formed in the upper surface of the rotating shaft portion 160.
  • the two positioning holes 167 are formed at intervals of substantially 180 degrees, and the two insertion holes 168 are formed at positions shifted from the two positioning holes 167 by substantially 90 degrees.
  • the height of the surface of the inner peripheral side of the mounting table 150 is higher than that of the above-described embodiment.
  • the first side surface 221 of the inner blade 220 faces the left-hand direction
  • the second side surface 222 faces the right-hand direction.
  • a third dewatering hole portion 224 composed of a plurality of holes arranged in the vertical direction is formed on the upper surface of the inner blade 220.
  • the shape of the boss portion 230 is different from that of the above embodiment. The dimension of the boss portion 230 in the vertical direction is shorter than that in the above embodiment to increase the amount of the mounting table 150.
  • a flange portion 233 is formed on the inner peripheral wall of the boss portion 230 at the upper portion. The stepped surface 234, the slit groove 235, and the engaging hole 236 are not formed in the inner peripheral wall of the boss portion 230.
  • the stopper 350 is used instead of the stopper 300 of the above embodiment.
  • the stopper 350 functions as a rotation axis of the rotation center of the inner pulsator 200 together with the rotation shaft portion 160.
  • the stopper 350 is composed of a disk-shaped top plate portion 351 and a peripheral wall portion 352 which is suspended from the outer peripheral edge of the top plate portion 351 and has an outer diameter slightly smaller than the top plate portion 351.
  • An opening 353 is formed in the center of the top plate portion 351.
  • two positioning projections 354 are formed at intervals of substantially 180 degrees.
  • two mounting bosses 355 are formed at positions shifted by substantially 90 degrees from the two positioning projections 354.
  • a mounting hole 356 is formed in the mounting boss 355.
  • the boss portion 230 is placed on the mounting table 150, the inner pulsator 200 is placed on the mounting portion 110 of the outer pulsator 100, and the stopper 350 is attached to the rotating shaft portion 160.
  • the positioning protrusion 354 of the stopper 350 is inserted into the positioning hole 167 of the rotating shaft portion 160, and the mounting hole of the stopper 350 is provided.
  • the 356 is mated with the insertion hole 168 of the rotating shaft portion 160.
  • the screw 750 is screwed to the mounting hole 356 from the back side of the rotating shaft portion 160, and the stopper 350 is fixed to the rotating shaft portion 160.
  • the top surface of the stopper 350 is substantially flush with the upper surface of the inner pulsator 200.
  • the outer peripheral portion of the top plate portion 351 of the stopper 350 overlaps the upper portion of the flange portion 233 of the boss portion 230, and when the inner pulsator 200 moves upward, the flange portion 233 collides with the outer peripheral portion of the top plate portion 351.
  • the upward rotation of the inner pulsator 200 is restricted by the stopper 350, and the inner pulsator 200 is not detached from the rotating shaft portion 160.
  • a predetermined amount of the gap S in which the inner pulsator 200 can move upward is provided between the outer peripheral portion of the top plate portion 351 and the flange portion 233 of the boss portion 230.
  • the stopper 350 rotates together with the outer pulsator 100, and therefore, a difference in rotational speed is generated between the stopper 350 and the inner pulsator 200.
  • the top surface of the stopper 350 is exposed in the washing and dewatering tank 22 through the opening portion 210 of the inner pulsator 200, and therefore, the laundry comes into contact with the top surface of the stopper 350. Therefore, the movement of the laundry in contact with the pulsator 24 becomes complicated as compared with the case where the rotational speed difference is generated only between the outer pulsator 100 and the inner pulsator 200. Therefore, the improvement of the washing performance can be further expected.
  • a blade extending radially from the opening 353 may be formed on the top surface of the stopper 350. According to this, since the water flow or the frictional laundry is generated by the blades of the stopper 350, the improvement of the washing performance can be expected.
  • the second side surface 222 of the inner blade 220 receives a strong water flow generated by the cliff surface 121 of the outer blade 120 of the outer pulsator 100.
  • the inner pulsator 200 can also rotate well in the right-hand direction in which the water flow generated by the outer pulsator 100 is weak, and rotate the laundry well.
  • the gasket 500 may be inserted between the inner pulsator 200 and the mounting table 150.
  • the surface blade 170 formed on the mounting portion 110 of the outer pulsator 100 is configured to extend from the mounting table 150 to the groove portion 140.
  • the surface blade 170 is not limited to the above shape, and may be, for example, a shape that does not extend to the groove portion 140. In short, if water flow can be generated in the internal space of the inner pulsator 200, the shape or the number of the surface blades 170 can be any number.
  • the back blade 240 of the inner pulsator 200 is formed on the back surface of the valley formed between the two inner blades 220.
  • the back blade 240 can receive the water flow generated in the internal space of the inner pulsator 200, it may be formed at any position, and the number or shape thereof may be arbitrary.
  • the reinforcing rib 237 formed on the outer peripheral wall of the lower cylindrical portion 232 of the boss portion 230 further extends outward, and the reinforcing rib 237 may function as a back surface blade that receives a water flow.
  • the second dewatering hole 173 is formed in the first dividing chamber 171 of the mounting portion 110, and the water passing hole 174 is formed in the second dividing chamber 172.
  • the second dewatering hole 173 and the water passing hole 174 may be formed in both the first dividing chamber 171 and the second dividing chamber 172.
  • the fully automatic washing machine 1 of the above embodiment does not have a drying function, but the present invention is also applicable to a fully automatic washing machine having a drying function.

Abstract

一种洗衣机，其波轮（24）包含：通过驱动电机的扭矩进行旋转的外波轮（100）、旋转自如地安装于外波轮（100）的表面侧设置的安装部（110）上的内波轮（200）。在内波轮（200）的背面侧和安装部（110）之间形成内波轮（200）的内部空间。而且，在安装部（110）设置多个表面叶片（170），该多个表面叶片（170）在洗涤脱水槽（22）内积存有水的状态下，随着外波轮（100）的旋转而旋转，而在内波轮（200）的内部空间产生水流。该洗衣机可以实现洗净性能的提高。

Description

洗衣机 技术领域
本发明涉及洗衣机。
背景技术
全自动洗衣机中，将波轮旋转自如地配置于洗涤脱水槽的底部，通过波轮的旋转产生水流，利用产生的水流搅拌洗涤物，对洗涤物进行洗涤。洗涤物即使波轮本身与洗涤物接触也被进行搅拌。
当水流复杂时，促进洗涤物彼此的摩擦或扭转，因此，可以提高洗净性能。因此，全自动洗衣机中可采用使用波轮的结构，该波轮具有：外波轮，其在外周部具有叶片；内波轮，其旋转自如地配置于在外波轮的中央部设置的收容部(参照专利文献1)。外波轮通过驱动电机的扭矩旋转，当外波轮旋转时，内波轮追随外波轮的旋转而旋转。通过内波轮和外波轮以不同的转速进行旋转，在洗涤脱水槽内产生复杂的水流。
现有技术文献
专利文献
专利文献1：日本特开2004-321629号公报
发明内容
发明所要解决的课题
在上述结构的波轮中，通过接受由外波轮的旋转产生的水流等、由外波轮的旋转产生的力，使内波轮旋转。因此，如何将外波轮的旋转产生的力有效地传递至内波轮，来确保内波轮的充分旋转成为用于进一步提高洗净性能的课题。
本发明是鉴于该课题而研发的，其目的在于，提供一种洗衣机，可以实现洗净性能的提高。
用于解决课题的技术方案
本发明的主要方式的洗衣机包含：外槽；洗涤脱水槽，其旋转自如地配置于所述外槽内；波轮，其旋转自如地配置于所述洗涤脱水槽的底部；驱动部，其产生驱动所述波轮的扭矩。在此，所述波轮包含通过所述驱动部的扭矩进行 旋转的第一波轮和旋转自如地安装于在所述第一波轮的表面侧设置的安装部的第二波轮。在所述第二波轮的背面侧和所述安装部之间形成有所述第二波轮的内部空间。而且，在所述安装部设置有多个第一叶片，该多个第一叶片在所述洗涤脱水槽内积存有水的状态下，随着所述第一波轮的旋转而旋转，在所述内部空间产生水流。
根据所述结构，不仅通过第一波轮的旋转将在洗涤脱水槽内产生的水流的力传递到第二波轮的表面侧，而且，利用第一叶片将在第二波轮的内部空间产生的水流的力传递到第二波轮的背面侧。因此，通过外波轮的旋转产生的力从第二波轮的内外有效地传递到第二波轮，因此，可以使第二波轮良好地旋转，可期待洗净性能的提高。
本方式的洗衣机可以设为在所述第二波轮的背面侧设置有接受由所述第一叶片产生的水流的第二叶片那样的结构。
根据所述结构，可以利用第二叶片有效地接受第一叶片产生的水流，因此，可以使第二波轮更良好地旋转。
本方式的洗衣机可以设为如下结构，即，在所述洗涤脱水槽的内周面设置有从上部喷出水的循环水路部，在所述波轮和所述洗涤脱水槽的底部之间设置有与所述循环水路部连接的泵室，在所述第一波轮的背面侧形成抽水叶片，该抽水叶片收容于所述泵室，将所述洗涤脱水槽和所述外槽之间的水吸起并送至所述循环水路部，在所述波轮上设置有向所述内部空间的流入路和来自所述内部空间的流出路，该向所述内部空间的流入路和来自所述内部空间的流出路用于在所述第一叶片旋转时，将所述洗涤脱水槽内的水流入所述内部空间，且从所述内部空间向所述泵室流出。
更具体而言，在所述内波轮设置有作为所述流入路的与所述内部空间连接的第一通水孔，在所述安装部中的所述第一叶片更外周侧设置有作为所述流出路的与所述泵室连接的第二通水孔。当所述第一叶片旋转时，所述洗涤脱水槽内的水通过所述第一通水孔流入所述内部空间，且流入的水通过所述第二通水孔从所述内部空间向所述泵室流出。
根据所述结构，不仅通过抽水叶片的旋转向泵室内送入水，而且，通过第一叶片的旋转也可以向泵室内送入水，因此，可以增加向循环水路部供给的水量。由此，可以从循环水路部的上部向洗涤脱水槽内的洗涤物充分浇水。
本方式的洗衣机可以设为如下结构，即，在所述安装部形成有排水孔，该 排水孔用于在来自所述洗涤脱水槽的排水时，将积存于所述内部空间的水排出到所述洗涤脱水槽的底部。
根据所述结构，在排水过程中，可以顺畅地排出积存在第二波轮的内部空间的水。
发明效果
根据本发明，可以提供能够实现洗净性能的提高的洗衣机。
本发明的效果或意义通过以下所示的实施方式的说明将变得更清楚。但是，严格而言，以下的实施方式是实施本发明时的一个例子，本发明不限制于以下实施方式所记载的任何例子。
附图说明
图1是表示实施方式的全自动洗衣机的结构的侧剖图。
图2是示意性地表示实施方式的过滤器单元的结构的俯视剖视图。
图3是实施方式的组装状态的波轮的立体图。
图4是实施方式的波轮的分解立体图。
图5是实施方式的外波轮的俯视图。
图6是图5的A-A′剖视图、B-B′剖视图及C-C′剖视图。
图7是表示实施方式的外波轮的载置部的结构的主要部分的放大立体图。
图8是表示实施方式的外波轮的载置部的结构的主要部分的放大俯视图。
图9是实施方式的从背面观察的外波轮的立体图。
图10是实施方式的内波轮的剖面立体图。
图11是实施方式的内波轮的俯视图。
图12是实施方式的从背面侧观察的内波轮的立体图。
图13是实施方式的从表面侧观察的止动件的立体图、从背面侧观察的止动件的立体图及止动件的剖面立体图。
图14是实施方式的从表面侧观察的封盖的立体图及从背面侧观察的封盖的立体图。
图15是实施方式的垫圈的立体图。
图16是用于说明实施方式的组装波轮的顺序的图。
图17是用于说明实施方式的外波轮左右旋转时的内波轮的动作的图。
图18是表示实施方式的利用外波轮的外叶片使洗涤物运动的情形的图。
图19是用于说明实施方式的从上方对内波轮施加洗涤物的负荷时减轻对外波轮施加的负荷的结构的图。
图20是表示实施方式的通过外波轮的抽水叶片及表面叶片的动作向泵室内供供水的情形的全自动洗衣机的主要部分的放大剖面立体图。
图21是表示实施方式的从内波轮的内部空间排水的情形的全自动洗衣机的主要部分的放大剖面立体图。
图22是变更例1的波轮的中央部的放大纵剖视图。
图23是变更例2的组装状态的波轮的立体图。
图24是变更例2的波轮的分解立体图。
图25是变更例2的波轮的主要部分的放大纵剖视图。
具体实施方式
以下，参照附图对作为本发明洗衣机的一个实施方式的全自动洗衣机进行说明。
图1是表示全自动洗衣机1的结构的侧剖图。
全自动洗衣机1具备构成外观的机壳10。机壳10包含：上下面开放的方形筒状的机身部11、覆盖机身部11的上表面的上表面板12、支承机身部11的脚台13。在上表面板12上形成洗涤物的投入口14。投入口14被开关自如的上盖15覆盖。
在机壳10内，外槽20被具有防振装置的4个吊棒21弹性地悬吊支承。在外槽20内配置洗涤脱水槽22。在洗涤脱水槽22的内周面形成多个脱水孔22a及多个凸起部22b。在洗涤脱水槽22的上部设置平衡环23。
在外槽20的底部配置波轮24。在波轮24的背面形成从背面中央起放射状地延伸的多个抽水叶片190。这些抽水叶片190配置于在波轮24的背面和洗涤脱水槽22的底面之间形成的泵室25。
在洗涤脱水槽22的内周面配置沿上下方向延伸的多个循环水路部26。各循环水路部26的下端部与泵室25连接。在各循环水路部26的上部形成狭缝状的喷出口26a。一个循环水路部26中具备过滤器单元27。
图2(a)～(c)是示意性地表示过滤器单元27的结构的俯视剖视图。
如图2(a)所示，过滤器单元27具备后面开口的过滤器壳27a。在过滤器壳27a的前表面形成开口部27b，在该开口部27b安装作为网眼织物的袋的棉绒 过滤器27c。过滤器壳27a按照以旋转轴27d为中心可以向左右方向回动规定角度的方式安装于循环水路部26。如图2(b)、(c)所示，当波轮24旋转，且产生左方向或右方向的水流时，过滤器单元27向左方向或右方向倾斜。由此，沿着洗涤脱水槽22的内周面流动的水从后面开口流入过滤器壳27a内并通过棉绒过滤器27c。此时，与水一起流入过滤器壳27a的棉绒回收到棉绒过滤器27c中。
返回图1，在外槽20的外底部配置产生驱动洗涤脱水槽22及波轮24的扭矩的驱动单元30。驱动单元30相当于本发明的驱动部。驱动单元30包含驱动电机31和传递机构部32。传递机构部32具有离合器机构，通过该离合器机构进行的切换操作，在清洗过程及漂洗过程中，仅向波轮24传递驱动电机31的扭矩，且仅使波轮24旋转，在脱水过程中，向波轮24及洗涤脱水槽22传递驱动电机31的扭矩，使波轮24及洗涤脱水槽22一体旋转。另外，传递机构部32具有减速机构。清洗过程及漂洗过程中，波轮24以驱动电机31的转速随着减速机构的减速比而变低的转速旋转。另外，传递机构部32具有：制动洗涤脱水槽22的手拉制动器、允许洗涤脱水槽22向该带式制动器的紧固方向的旋转且阻止洗涤脱水槽22向带式制动器的松动方向的旋转的单向离合器。本实施方式中，从上方观察，右旋方向成为制动带的紧固方向，左旋方向成为带式制动器的松动方向，即成为利用单向离合器阻止洗涤脱水槽22的旋转的方向。
在外槽20的外底部形成排水口部20a。在排水口部20a设置排水阀40。排水阀40与排水管41连接。当开放排水阀40时，积存在洗涤脱水槽22及外槽20的水通过排水管41排出到洗衣机外。
在上表面板12的后部配置用于向洗涤脱水槽22内供给自来水的供水单元50。供水单元50具有供水阀51。供水阀51与水龙头连接。当开放供水阀51时，从水龙头向供水单元50导入自来水。导入的自来水从供水单元50的注水口52向洗涤脱水槽22内流出。
全自动洗衣机1进行各种运转程序的洗涤运转。洗涤运转包含清洗过程、中间脱水过程、漂洗过程、最终脱水过程。
清洗过程及漂洗过程中，在洗涤脱水槽22内积存有水的状态下，波轮24向右方向及左方向旋转。通过波轮24的旋转，在洗涤脱水槽22内产生水流。在清洗过程中，利用产生的水流和水所包含的洗涤剂对洗涤物进行清洗。漂洗过程中，利用产生的水流漂洗洗涤物。另外，清洗过程及漂洗过程中，随着波轮24的旋转，抽水叶片190在泵室25内旋转。洗涤脱水槽22和外槽20之间 的水从设于洗涤脱水槽22底面的通水口22c吸入泵室25内。吸入泵室25的水输送至各循环水路部26，输送至各循环水路部26的水从喷出口26a向洗涤脱水槽22的中央流出。由此，洗涤脱水槽22上方的洗涤物中也可以充分含有水。
中间脱水过程及最终脱水过程中，洗涤脱水槽22及波轮24一体地进行高速旋转。通过洗涤脱水槽22中产生的离心力的作用，使洗涤物脱水。
本实施方式的全自动洗衣机1以波轮24的结构为特征，以下，详细说明波轮24的结构。
图3是组装状态的波轮24的立体图。图4是波轮24的分解立体图。图5是外波轮100的俯视图，图6(a)、(b)及(c)分别是图5的A-A′剖视图、B-B′剖视图及C-C′剖视图。图7及图8分别是表示外波轮100的安装部110的结构的主要部分的放大立体图及放大俯视图。图9是从背面观察的外波轮100的立体图。图10、图11及图12是内波轮200的剖面立体图、内波轮200的俯视图及从背面侧观察的内波轮200的立体图。图13(a)、(b)及(c)分别是从表面侧观察的止动件300的立体图、从背面侧观察的止动件300的立体图及止动件300的剖面立体图。图14(a)及(b)分别是从表面侧观察的封盖400的立体图及从背面侧观察的封盖400的立体图。图15是垫圈500的立体图。
参照图3及图4，波轮24由：外波轮100、旋转自如地配置于外波轮100的中央部的内波轮200、限制内波轮200向上方移动的止动件300、安装于内波轮200的中央部的封盖400、在外波轮100和内波轮200之间夹持的垫圈500、用于将垫圈500固定在外波轮100上的3根第一螺丝600、用于将止动件300固定在外波轮100上的3根第二螺丝700而构成。外波轮100相当于本发明的第一波轮，内波轮200相当于本发明的第二波轮。
首先，说明外波轮100的结构。
参照图4、图5及图6(a)～(c)，外波轮100具有圆盘形状，并由树脂材料、例如聚丙烯树脂形成。在外波轮100的表面的中央部形成旋转自如地安装内波轮200的凹下成圆形的安装部110。另外，在外波轮100的表面上，在安装部110的外侧区域以大致相等的间隔形成5个外叶片120。为了将积存在安装部110的外侧区域的水排出，在相邻的两个外叶片120之间形成由多个孔构成的第一脱水孔部130。
从上方观察，外叶片120具有接近钩形的形状。外叶片120在面向左旋方向的一侧具有以从外叶片120的下部起与外波轮100旋转的面大致垂直的方式 竖立的大致平坦的峭壁面121。另外，外叶片120在面向右旋方向的一侧具有向右旋方向降低的大致扇形的倾斜面122。如图6(a)～(c)所示，倾斜面122随着从外波轮100的内周侧向外周侧，下降梯度变小。进而，外叶片120的外周部123以沿着右旋方向缓慢地降低的方式倾斜。
外叶片120具有与峭壁面121和倾斜面122连接的顶部120a，在顶部120a上形成有向上方凸出的凸起部124。凸起部124具有从外波轮100的内周侧向外周侧延伸的细长的形状，并且上表面具有平坦的形状。
参照图7及图8，安装部110中，在外周缘形成环状的槽部140。在槽部140中以大致相等的间隔形成5个第一脱水孔141。第一脱水孔141相当于本发明的排水孔。槽部140的高度比安装部110的底面高，比外波轮100的表面低。另外，在安装部110的中央部形成圆筒状的载置台150。在载置台150的表面上，隔开大致180度的间隔形成两个定位凸起151。进而，在载置台150的表面上，以大致相等的间隔形成3个第一安装孔152。定位凸起151及第一安装孔152用于将垫圈500固定在载置台150上。
在载置台150的中央部形成圆筒状的旋转轴部160。在旋转轴部160的上表面，在中央形成圆形的轴孔161，并且以包围轴孔161的方式形成安装止动件300的止动件固定部162。止动件固定部162具备以大致相等的间隔配置的3个安装凸台163和设于各安装凸台163两侧的圆弧状的壁部164。在安装凸台163上形成第二安装孔165。在相邻的两个壁部164之间形成狭缝部166。
在安装部110上，从载置台150起放射状地形成多个表面叶片170。表面叶片170相当于本发明的第一叶片。表面叶片170与槽部140连接。表面叶片170的从载置台150侧到大致中央的部位形成相同的高度，从表面叶片170的中央部到槽部140的部位向槽部140逐渐变高。
安装部110中的载置台150和槽部140之间的区域被表面叶片170划分，由此，在该区域中，沿着外波轮100的旋转方向交替设置第一划分室171和第二划分室172。第一划分室171中，在底面形成两个第二脱水孔173，第二划分室172中，在外周壁形成通水孔174。第二脱水孔173相当于本发明的排水孔，通水孔174相当于本发明的排水孔、流出路及第二通水孔。
参照图9，在外波轮100的背面，在中央部形成外凸台180。在外凸台180的内部设置金属制的内凸台181。内凸台181通过嵌件成型嵌入外凸台180内。在内凸台181上安装用于旋转波轮24的翼轴33(参照图17(b))。另外，在外 波轮100的背面，从外凸台180起放射状地形成多个抽水叶片190。
接着，说明内波轮200的结构。
参照图4、图10、图11及图12，内波轮200具有倒碗形状，且由比重比水小的树脂材料形成。本实施方式中，内波轮200的材料设为聚丙烯树脂(PP)。内波轮200的材料也可以设为其它的比重比水小的树脂材料，例如也可以设为聚乙烯树脂(PE)或乙烯-醋酸乙烯酯共聚树脂(EVA)。
内波轮200在中央具有圆形的开口部210。在内波轮200的表面，从开口部210的外周缘起放射状地形成多个内叶片220。内叶片220以面向右旋方向的第一侧面221的倾斜度比面向左旋方向的第二侧面222的倾斜度更陡峭的方式形成。为了将积存在两个内叶片220之间的水排出，在第二侧面222上形成由多个孔构成的第二脱水孔部223。第二脱水孔部223相当于本发明的流入路及第一通水孔。
在内波轮200的背面，以从开口部210的外周缘垂下的方式形成大致圆筒状的凸台部230。凸台部230包含上部筒部231、与上部筒部231连接的下部筒部232。下部筒部232外径及内径的比上部筒部231的外径及内径略小。在凸台部230的内周壁上，在上部筒部231和下部筒部232的边界部分形成向内侧伸出的环状凸缘部233。
上部筒部231的内周壁上，在上端部形成比内波轮200的上表面更低一段的台阶面234。另外，在上部筒部231的内周壁上，两个狭缝槽235形成于相互面对面的位置，进而，以与两个狭缝错开大致90度的方式形成两个长方形的卡合孔236。另外，在下部筒部232的外周壁上，为了加强凸台部230，遍及整周形成上下延伸的多个加强肋237。
在内波轮200的背面，在相邻的两个内叶片220之间的全部谷部的位置形成从凸台部230放射状地延伸到内波轮200的外周部的背面叶片240。背面叶片240相当于本发明的第二叶片。另外，在内波轮200的背面形成从外周缘垂下的环状肋241。
接着，说明止动件300的结构。
参照图13(a)、(b)及(c)，从上方观察，止动件300具有圆形状。在止动件300的外周部310形成环状的防护肋311。进而，在外周部310以大致相等的间隔形成第二螺丝700通过的3个插通孔312。进而，在止动件300上，在外周部310的内侧形成研钵状的凹部320，在凹部320的中央形成圆形的开口部 321。
在凹部320的背面上，以从开口部321的外周缘垂下的方式形成圆筒部330。圆筒部330的前端部331的外径比圆筒部330的其它部分的外径小。在圆筒部330形成脱水口332。另外，通过使插通孔312的周边部分向内侧凹下，在凹部320的背面形成收容止动件固定部162的安装凸台163的凸台收容部340。进而，在凹部320的背面上形成3个导向肋341。各导向肋341位于两个插通孔312的中间。
接着，说明封盖400的结构。
参照图14(a)及(b)，封盖400由圆盘状的顶板部410和从顶板部410的外周缘垂下的、外径比顶板部410略小的周壁部420构成。在周壁部420的外周面上，隔开大致180度的间隔形成两个导向肋421。进而，在周壁部420的外周面上，在与两个导向肋421错开大致90度的位置形成两个爪部422。封盖400与内波轮200一样，由比重比水小的树脂材料、例如聚丙烯树脂(PP)形成。除此之外，封盖400也可以由聚乙烯树脂(PE)、乙烯-醋酸乙烯酯共聚树脂(EVA)等形成。
接着，对垫圈500进行说明。
参照图15，垫圈500具有环型的圆盘形状，且由摩擦系数比形成外波轮100的树脂材料小且耐磨损性优异的材料、例如不锈钢形成。垫圈500中，内径D1比旋转轴部160的外径略大，外径D2与载置台150的外径大致相等。在垫圈500上，隔开大致180度的空间形成两个定位孔510。另外，在垫圈500上，以大致相等的间隔形成第二螺丝700通过的6个切孔520。此外，垫圈500也可以通过由聚四氟苯乙烯涂敷的金属材料形成。
图16(a)～(d)是用于说明组装波轮24的顺序的图。
在组装波轮24时，首先，在外波轮100的载置台150上配置垫圈500。此时，向各定位孔510中插入各定位凸起151。6个切孔520中的任意3个切孔520与3个第一安装孔152匹配。将3根第一螺丝600螺固在3个第一安装孔152上，如图16(a)所示，将垫圈500固定在载置台150上。
接着，如图16(b)所示，将内波轮200配置于安装部110。此时，旋转轴部160插入凸台部230的内部，凸台部230载置于安装在载置台150的垫圈500上。内波轮200的外周缘的环状肋241和安装部110的外周缘的槽部140具有规定的间隔且对置。由此，可防止异物混入至形成于内波轮200和安装部110 之间的空间，即内波轮200的内部空间。
接着，向凸台部230的内部插入止动件300，且将止动件300安装于止动件固定部162。此时，将止动件300的圆筒部330的前端部331插入旋转轴部160的轴孔161，且将止动件300的导向肋341插入止动件固定部162的狭缝部166。进而，在止动件300的各凸台收容部340中收容止动件固定部162的各安装凸台163的上端部，止动件300的各插通孔312和各安装凸台163的第二安装孔165匹配。将3根第二螺丝700螺固在3个第二安装孔165上，如图16(c)所示，将止动件300固定在止动件固定部162上。止动件300的外周部310与凸台部230的凸缘部233的上方重叠，在内波轮200向上方移动时，凸缘部233与止动件300的外周部310碰撞。这样，内波轮200向上方的移动被止动件300限制，内波轮200不会从旋转轴部160脱离。另外，止动件300的外周部310及防护肋311和凸台部230的内壁面具有规定量的间隙且对置。由此，止动件300与旋转轴部160一起作为成为内波轮200的旋转中心的旋转轴发挥作用。内波轮200可以向径向移动凸台部230的内周壁和止动件300之间的上述间隙的量。
最后，如图16(d)所示，内波轮200的上表面的开口部210被封盖400堵塞。将封盖400嵌入凸台部230时，将封盖400的导向肋421插入凸台部230的狭缝槽235。当将封盖400嵌入凸台部230，直到顶板部410的背面与凸台部230的台阶面234碰撞时，封盖400的爪部422与凸台部230的卡合孔236的上端部卡合。由此，封盖400不会向上方脱离。
这样，波轮24的组装完成。
接着，说明波轮24的动作。
图17(a)及(b)是用于说明外波轮100左右旋转时的内波轮200的动作的图。图17(a)是波轮24的立体图，图17(b)是波轮24的中央部的放大剖面立体图。
波轮24中，外波轮100与翼轴33连接，当翼轴33通过驱动电机31的扭矩旋转时，外波轮100旋转。内波轮200不与翼轴33连接，因此，不能利用驱动电机31直接驱动。
清洗过程或漂洗过程中，当外波轮100向右旋或左旋旋转时，利用外叶片120搅拌积存在洗涤脱水槽22内的水，在洗涤脱水槽22内产生右旋或左旋的水流。内波轮200的内叶片220被产生的水流推动，内波轮200旋转。在此，如 图17(a)所示，外波轮100按照左旋旋转时，易于成为主要的水阻力的外叶片120的峭壁面121推动水，因此，产生较强的水流。内波轮200的内叶片220利用期望右旋方向的第一侧面221接受较强的水流。第一侧面221形成陡峭的梯度，易于接受水流，因此，内波轮200以快速的速度按照左旋旋转。另一方面，外波轮100按照右旋旋转时，易于成为主要的水阻力的外叶片120的倾斜面122推动水，因此，产生较弱的水流。内波轮200的内叶片220利用期望左旋方向的第二侧面222接受较弱的水流。第二侧面222比第一侧面221形成较缓的梯度，难以接受水流，因此，内波轮200以较低的速度按照右旋旋转。
另外，如图17(b)所示，当外波轮100旋转时，形成于安装部110的表面叶片170旋转，因此，积存在内波轮200的内部空间的水被表面叶片170搅拌。在内波轮200的内部空间产生水流，且产生的水流的力作用于内波轮200的背面。由此，内波轮200不仅根据外波轮100的外叶片120产生的水流的力旋转，而且还根据外波轮100的表面叶片170产生的水流的力旋转。特别是在内波轮200背面形成有背面叶片240，因此，内波轮200可以利用背面叶片240有效地接受表面叶片170产生的水流的力。
进而，在内波轮200旋转时，凸台部230可以与止动件300或载置台150接触，或内波轮200的外周缘可以与安装部110的外周缘接触。即使从接触的部分接受力，内波轮200也会旋转。
这样，本实施方式中，外波轮100通过驱动电机31的扭矩而旋转，内波轮200通过由外波轮100的旋转产生的水流的力或通过与外波轮100的接触得到的力而旋转。因此，内波轮200的旋转速度比外波轮100的旋转速度慢。由于这种外波轮100和内波轮200的旋转速度差，在洗涤脱水槽22内产生复杂的水流，且洗涤脱水槽22内的洗涤物的运动变得复杂。由此，促进洗涤物彼此的摩擦，因此，可期待洗净性能的提高。另外，若外波轮100和内波轮200中产生旋转速度差，则在洗涤物与旋转的波轮24接触时，在波轮24的内侧和外侧产生对洗涤物作用的机械力的差。由此，易于在与波轮24接触的洗涤物上产生扭转，因此，可期待洗净性能的提高。
进而，本实施方式中，波轮24设为如下结构，即，利用设于外波轮100的安装部110的表面叶片170，在内波轮200的内部空间产生水流，并将该水流产生的力传递到内波轮200的背面。由此，随着外波轮100的旋转，可以使内波轮200良好地旋转。特别是在本实施方式中，可以利用内波轮200的背面叶片 240有效地接受表面叶片170产生的水流，因此，可以使内波轮200更良好地旋转。因此，利用内波轮200可以良好地搅拌洗涤物，因此，可期待洗净性能的提高。另外，清洗过程中，包含洗涤剂的水在内波轮200的内部空间被表面叶片170及背面叶片240良好地搅拌，因此，可以使洗涤剂良好地起泡。
进而，本实施方式中，通过陡峭梯度的第一侧面221接受外叶片120的峭壁面121产生的较强的水流，缓和梯度的第二侧面222接受外叶片120的倾斜面122产生的较弱的水流，由此在内波轮200内以左旋和右旋产生较大的旋转速度的差。由此，内波轮200产生的水流变得复杂，并且与内波轮200的接触而产生的洗涤物的运动也变得复杂，因此，可期待洗净性能的提高。
进而，本实施方式中，在洗涤脱水槽22内产生外叶片120的峭壁面121引起的较强的水流，因此，通过过滤器单元27的水量增加。由此，提高利用过滤器单元27进行的棉绒的回收效率。
图18(a)及(b)是表示利用外波轮100的外叶片120转动洗涤物的情形的图。
如图18(a)所示，当波轮24按照左旋旋转时，外波轮100的外叶片120的峭壁面121与洗涤物接触。峭壁面121与波轮24旋转的一面大致垂直地竖立，因此，洗涤物被峭壁面121猛力地推动。由此，洗涤脱水槽22的周向的洗涤物的运动活跃。另一方面，如图18(b)所示，当波轮24按照右旋旋转时，外波轮100的外叶片120的倾斜面122与洗涤物接触。倾斜面122具有随着从外波轮100的内周侧向外周侧而梯度变缓的形状，因此，接触的洗涤物一边被倾斜面122顶起，一边向外周侧移动。由此，洗涤脱水槽22的径向的洗涤物的运动变得活跃。
因此，本实施方式中，在波轮24左右旋转时，洗涤物向各个方向活跃地运动，因此，可期待洗净性能的提高。
另外，洗涤物被倾斜面122顶起移动时，被形成于外叶片120的顶部的凸起部124摩擦。由此，可进一步期待洗净性能的提高。
另外，本实施方式中，将外叶片120的峭壁面121发挥作用的波轮24的旋转方向设为与利用传递机构部32的单向离合器阻止洗涤脱水槽22的旋转的方向相同的左旋方向。
在利用峭壁面121大幅度移动洗涤物的情况下，洗涤物与洗涤脱水槽22的内壁面，特别是存在于内壁面的凸起部22b或循环水路部26等接触，由此，对 洗涤脱水槽22赋予使洗涤脱水槽22旋转的旋转力。洗涤脱水槽22的右旋方向的旋转被传递机构部32的带式制动器阻止，但在按照右旋方向施加较大的旋转力的情况下，带式制动器上产生滑动，洗涤脱水槽22易于转动。当洗涤脱水槽22转动时，洗涤物不易与洗涤脱水槽22的内壁面或凸起部22b摩擦，不易得到洗涤脱水槽22的内壁面或凸起部22b产生的洗净效果。另外，在洗涤脱水槽22转动时，可能从带式制动器产生异响。
本实施方式中，被峭壁面121推动而洗涤物猛力地运动的方向与利用单向离合器阻止洗涤脱水槽22的旋转的方向相同。因此，即使洗涤物猛力地与洗涤脱水槽22接触，也可防止洗涤脱水槽22转动，而可以充分得到洗涤脱水槽22的内壁面或凸起部22b产生的洗净效果。另外，可防止来自带式制动器的异响的产生。
图19是用于说明从上方对内波轮200施加洗涤物的负荷时减轻对外波轮100施加的负荷的结构的图，是波轮24的中央部的放大纵剖视图。
在洗涤脱水槽22内收容大量洗涤物的情况下，或在积存在洗涤脱水槽22内的水相对于收容的洗涤物较少的情况下，洗涤物大幅度按压在波轮24上，由此，可以对内波轮200及外波轮100施加洗涤物产生的较大的负荷。
本实施方式中，内波轮200由比重比水小的材料形成。进而，如图19所示，在内波轮200的凸台部230的下端与垫圈500的表面接触的状态下，在凸台部230的凸缘部233和止动件300的外周部310之间设置内波轮200可以向上方移动的规定量的间隙S。间隙S设为比设计上的允许公差大很多的值，例如，在允许公差为0.5mm左右的情况下设为1.5mm左右。由此，即使凸台部230等零件上产生尺寸误差，在凸缘部233和外周部310之间也可确保充分的间隙S。由此，当在洗涤脱水槽22中积存水时，可以通过水的浮力将内波轮200浮上间隙S的量。
这样，本实施方式中，内波轮200可以向上方浮上某个程度，因此，在对内波轮200施加洗涤物的负荷Fa时，经由凸台部230对外波轮100的载置台150施加的负荷Fb被内波轮200作用的浮力Fc减轻。由此，可以抑制由于对内波轮200施加的负荷，而内波轮200的凸台部230和垫圈500之间的摩擦阻力大幅度增加。因此，可以抑制对波轮24整体性地施加较大的负荷时的施加于外波轮100的负荷的增加，因此，可抑制外波轮100的旋转速度降低，而可以实现洗净性能的提高。
进而，本实施方式中，在凸台部230和载置台150之间即在内波轮200和外波轮100的滑动部分配置摩擦系数小且耐磨损性优异的垫圈500，因此，可以进一步抑制对内波轮200施加较大的负荷时的、在波轮200和外波轮100之间产生的摩擦阻力的增加。由此，可以进一步抑制外波轮100的旋转速度的降低。
进而，外波轮100及内波轮200由树脂材料形成，因此，当内波轮200在载置台150上滑动时，内波轮200和载置台150可能由于通过滑动而产生的热而熔接。于是，内波轮200难以旋转。本实施方式中，内波轮200在垫圈500上滑动，因此，可以防止内波轮200和载置台150的熔接。
特别是在本实施方式中，波轮24为利用外叶片120的峭壁面121使洗涤物良好地转动的结构，因此，对外波轮100施加的负荷易于变大。但是，本实施方式中，如图19中进行的说明，降低从内波轮200施加的负荷，因此，不需要使驱动电机31的扭矩增大该量，可以实现成本的降低。
图20是表示通过外波轮100的抽水叶片190及表面叶片170的动作向泵室25内供供水的情形的全自动洗衣机1的主要部分的放大剖面立体图。
如参照图1进行的说明，在将波轮24配置于洗涤脱水槽22的状态下，形成于外波轮100背面的抽水叶片190收容于洗涤脱水槽22的泵室25。当随着外波轮100的旋转，抽水叶片190在泵室25内旋转时，如图20的虚线箭头所示，洗涤脱水槽22和外槽20之间的水从通水口22c吸入泵室25内。吸入的水被输送至循环水路部26。
本实施方式中，在被两个表面叶片170划分的第二划分室172中设置与泵室25连接的通水孔174。由此，当表面叶片170随着外波轮100的旋转而旋转时，如图20的实线箭头所示，通过内波轮200的外周缘和安装部110的槽部140的间隙L及内波轮200的第二脱水孔部223，洗涤脱水槽22内的水流入内波轮200的内部空间。流入的水在第二划分室172内从内周侧流向外周侧，并从通水孔174流出至泵室25。从内波轮200的内部空间流入泵室25的水被输送至循环水路部26。此外，内波轮200的外周缘和安装部110的槽部140的间隙L与第二脱水孔部223一样，相当于本发明的流入路。
这样，本实施方式中，不仅洗涤脱水槽22和外槽20之间的水，而且可以将洗涤脱水槽22内的水送入泵室25，因此，可以增加向循环水路部26供给的水量。由此，可以从循环水路部26的喷出口26a对洗涤脱水槽22内的洗涤物充分浇水。
图21是表示从内波轮200的内部空间排水的情形的全自动洗衣机1的主要部分的放大剖面立体图。
在排水过程中，从外槽20内排水时，积存在内波轮200的内部空间的水如图21的实线箭头所示那样，通过第一划分室171的第二脱水孔173及第二划分室172的通水孔174排出到洗涤脱水槽22的底部。另外，积存在止动件300内的水如虚线箭头所示那样通过脱水口332排出到第一划分室171内或第二划分室172内。进而，积存在槽部140的水通过第一脱水孔141排出到洗涤脱水槽22的底部。
这样，本实施方式中，在安装部110设置作为与洗涤脱水槽22的底部连接的排水孔的第一脱水孔141、第二脱水孔173及通水孔174。由此，在排水过程中，可以顺畅地排出积存在内波轮200的内部空间的水。
另外，本实施方式中，将第二脱水孔173仅设于第一划分室171，且将通水孔174仅设于第二划分室172。即，在被表面叶片170划分的全部划分室中，交替设置第二脱水孔173和通水孔174。由此，可以尽可能抑制设置第二脱水孔173和通水孔174引起的外波轮24的强度降低。
以上，对本发明的实施方式进行了说明，但本发明不限于上述任何实施方式等，另外，除了上述以外，本发明的实施方式也可以进行各种变更。
＜变更例1＞
图22是变更例1的波轮24的中央部的放大纵剖视图。
本变更例中，在止动件300和封盖400之间收容银离子溶出部件800。即，止动件300和封盖400之间的空间用作银离子溶出部件800的收容部810。银离子溶出部件800具有在由无纺布等形成的具有通水性的袋体801中收纳许多银离子溶出小片802的结构。银离子溶出小片802是例如在溶解性的玻璃部件中拌入银的离子珠。
通过在洗涤脱水槽22内积存水，当银离子溶出部件800浸渍于水中时，银离子从银离子溶出小片802溶出，且溶出的银离子通过袋体801。这样，从银离子溶出部件800流出的银离子通过凸台部230的卡合孔236等向洗涤脱水槽22内流出。由此，洗涤脱水槽22内的水成为包含银离子的状态。因此，在清洗过程或漂洗过程中，洗涤脱水槽22内的洗涤物被银离子除菌。
这样，本变更例中，在波轮24上设置收容银离子溶出部件800的收容部810，因此，可以使银离子溶出小片802与积存在洗涤脱水槽22内的水长时间接触， 可以使银离子从银离子溶出小片802充分溶出。由此，可期待提高利用银离子进行的洗涤物的杀菌效果。
＜变更例2＞
图23、图24及图25是表示变更例2的波轮24的结构的图。图23是组装状态的波轮24的立体图。图24是波轮24的分解立体图。图25是波轮24的主要部分的放大纵剖视图。
本变更例的波轮24具备：外波轮100、内波轮200、止动件350、用于将止动件350固定在外波轮100的两根螺丝750。本变更例的波轮24不具备封盖400和垫圈500。
外波轮100中，载置台150、旋转轴部160及表面叶片170的形状与上述实施方式不同。与上述实施方式的情况相比，载置台150的高度高，外形小。在旋转轴部160的上表面形成两个定位孔167和两个插通孔168，来代替止动件固定部162。两个定位孔167隔开大致180度的间隔地形成，两个插通孔168形成于与两个定位孔167错开大致90度的位置。表面叶片170根据提高了载置台150，内周侧的部位的高度变得比上述实施方式的情况高。
内波轮200中，与上述实施方式不同，内叶片220的第一侧面221面向左旋方向，第二侧面222面向右旋方向。另外，在内叶片220的上表面形成由沿着上下方向配置的多个孔构成的第三脱水孔部224。进而，凸台部230的形状与上述实施方式不同。凸台部230的上下方向的尺寸比上述实施方式的情况短提高载置台150的量。另外，在凸台部230的内周壁上，在上部形成凸缘部233。在凸台部230的内周壁上未形成台阶面234、狭缝槽235及卡合孔236。
本变更例中，使用止动件350代替上述实施方式的止动件300。止动件350与止动件300一样，与旋转轴部160一起作为内波轮200的旋转中心的旋转轴发挥作用。止动件350由圆盘状的顶板部351和从顶板部351的外周缘垂下的、外径比顶板部351略小的周壁部352构成。在顶板部351的中央形成开口部353。在周壁部352上，隔开大致180度的间隔形成两个定位凸起354。进而，在周壁部352上，在与两个定位凸起354错开大致90度的位置形成两个安装凸台355。在安装凸台355上形成安装孔356。
如图25所示，将凸台部230载置于载置台150上，将内波轮200配置于外波轮100的安装部110后，将止动件350安装在旋转轴部160上。此时，将止动件350的定位凸起354插入旋转轴部160的定位孔167，止动件350的安装孔 356与旋转轴部160的插通孔168匹配。将螺丝750从旋转轴部160的背面侧螺固于安装孔356上，并将止动件350固定在旋转轴部160上。止动件350的顶面与内波轮200的上表面大致成齐平面。止动件350的顶板部351的外周部与凸台部230的凸缘部233的上方重叠，内波轮200向上方移动时，凸缘部233与顶板部351的外周部碰撞。这样，内波轮200向上方的转动被止动件350限制，内波轮200不会从旋转轴部160脱离。与上述实施方式一样，在顶板部351的外周部和凸台部230的凸缘部233之间设置内波轮200可以向上方移动的规定量的间隙S。
本变更例中，止动件350与外波轮100一起旋转，因此，在止动件350和内波轮200之间产生旋转速度差。止动件350的顶面通过内波轮200的开口部210在洗涤脱水槽22内露出，因此，洗涤物与止动件350的顶面接触。因此，与仅在外波轮100和内波轮200之间产生旋转速度差的情况相比，与波轮24接触的洗涤物的运动变得复杂。因此，可进一步期待洗净性能的提高。
此外，也可以在止动件350的顶面上形成从开口部353起放射状地延伸的叶片。据此，利用止动件350的叶片，也产生水流或摩擦洗涤物，因此，可期待洗净性能的提高。
进而，本变更例中，内波轮200中，内叶片220的第二侧面222接受外波轮100的外叶片120的峭壁面121产生的较强的水流。由此，内波轮200可以在外波轮100产生的水流较弱的右旋方向上也良好地旋转，并良好地转动洗涤物。
此外，本变更例中，也可以在内波轮200和载置台150之间插入垫圈500。
＜其他变更例＞
上述实施方式中，形成于外波轮100的安装部110的表面叶片170设为从载置台150延伸到槽部140的结构。但是，表面叶片170不限于上述形状，例如也可以设为不延伸到槽部140那样的形状。总之，如果可以在内波轮200的内部空间产生水流，则表面叶片170的形状或个数也可以为任意数。
上述实施方式中，内波轮200的背面叶片240形成于在两个内叶片220之间形成的谷部的背面。但是，如果背面叶片240可以接受在内波轮200的内部空间产生的水流，则也可以形成于任意位置，其个数或形状也可以任意。例如，通过在凸台部230的下部筒部232的外周壁形成的加强肋237进一步向外侧延伸，加强肋237也可以作为接受水流的背面叶片发挥作用。
上述实施方式中，考虑外波轮100的强度降低，在安装部110的第一划分室171形成第二脱水孔173，且在第二划分室172形成通水孔174。但是，如果能充分确保外波轮100的强度充分，则也可以在第一划分室171和第二划分室172双方形成第二脱水孔173及通水孔174。
上述实施方式的全自动洗衣机1不具备干燥功能，但本发明也可以适用于具备干燥功能的全自动洗衣机。
除此之外，本发明的实施方式可以在权利要求书所示的技术思想的范围内适当进行各种变更。
附图标记说明
20外槽
22洗涤脱水槽
24波轮
25泵室
26循环水路部
30驱动单元(驱动部)
100外波轮(第一波轮)
110安装部
141第一脱水孔(排水孔)
170表面叶片(第一叶片)
173第二脱水孔(排水孔)
174通水孔(排水孔、流出路、第二通水孔)
190抽水叶片
200内波轮(第二波轮)
223第二脱水孔部(流入路、第一通水孔)
240背面叶片(第二叶片)

Claims (5)

  1. 一种洗衣机，其特征在于，包含：
    外槽；
    洗涤脱水槽，其旋转自如地配置于所述外槽内；
    波轮，其旋转自如地配置于所述洗涤脱水槽的底部；以及
    驱动部，其产生驱动所述波轮的扭矩，
    所述波轮包含：通过所述驱动部的扭矩进行旋转的第一波轮、以及旋转自如地安装于在所述第一波轮的表面侧设置的安装部的第二波轮，
    在所述第二波轮的背面侧和所述安装部之间形成所述第二波轮的内部空间，
    在所述安装部设置有多个第一叶片，该多个第一叶片在所述洗涤脱水槽内积存有水的状态下，随着所述第一波轮的旋转而旋转，在所述内部空间产生水流。
  2. 根据权利要求1所述的洗衣机，其特征在于，
    在所述第二波轮的背面侧设置有接受由所述第一叶片产生的水流的第二叶片。
  3. 根据权利要求1或2所述的洗衣机，其特征在于，
    在所述洗涤脱水槽的内周面设置有从上部喷出水的循环水路部，
    在所述波轮和所述洗涤脱水槽的底部之间设置有与所述循环水路部连接的泵室，
    在所述第一波轮的背面侧形成有抽水叶片，该抽水叶片收容于所述泵室，将所述洗涤脱水槽和所述外槽之间的水吸起并送至所述循环水路部，
    在所述波轮设置有向所述内部空间的流入路和来自所述内部空间的流出路，该向所述内部空间的流入路和来自所述内部空间的流出路用于在所述第一叶片旋转时，将所述洗涤脱水槽内的水流入所述内部空间，且从所述内部空间向所述泵室流出。
  4. 根据权利要求3所述的洗衣机，其特征在于，
    在所述内波轮设置有作为所述流入路的与所述内部空间连接的第一通水孔，
    在所述安装部中的所述第一叶片更外周侧设置有作为所述流出路的与所述 泵室连接的第二通水孔，
    当所述第一叶片旋转时，所述洗涤脱水槽内的水通过所述第一通水孔流入所述内部空间，且流入的水通过所述第二通水孔从所述内部空间向所述泵室流出。
  5. 根据权利要求1～4中任一项所述的洗衣机，其特征在于，
    在所述安装部形成有排水孔，该排水孔用于在来自所述洗涤脱水槽的排水时，将积存于所述内部空间的水排出到所述洗涤脱水槽的底部。
PCT/CN2014/095721 2014-02-06 2014-12-30 洗衣机 WO2015117530A1 (zh)

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CN110273247A (zh) * 2018-03-16 2019-09-24 青岛海尔洗衣机有限公司 波轮组件和包括该波轮组件的衣物处理设备
CN111373085A (zh) * 2017-11-22 2020-07-03 青岛海尔洗衣机有限公司 洗衣机
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