WO2022179589A1 - 过滤装置及洗衣机 - Google Patents

过滤装置及洗衣机 Download PDF

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Publication number
WO2022179589A1
WO2022179589A1 PCT/CN2022/077809 CN2022077809W WO2022179589A1 WO 2022179589 A1 WO2022179589 A1 WO 2022179589A1 CN 2022077809 W CN2022077809 W CN 2022077809W WO 2022179589 A1 WO2022179589 A1 WO 2022179589A1
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WO
WIPO (PCT)
Prior art keywords
filter
water
peripheral surface
inner peripheral
path
Prior art date
Application number
PCT/CN2022/077809
Other languages
English (en)
French (fr)
Inventor
竹内晴美
Original Assignee
青岛海尔洗衣机有限公司
Aqua株式会社
海尔智家股份有限公司
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 青岛海尔洗衣机有限公司, Aqua株式会社, 海尔智家股份有限公司 filed Critical 青岛海尔洗衣机有限公司
Priority to CN202280016973.7A priority Critical patent/CN116917565A/zh
Publication of WO2022179589A1 publication Critical patent/WO2022179589A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • 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 
    • D06F39/10—Filtering arrangements

Definitions

  • the present invention relates to a filter device and a washing machine including the filter device.
  • the washing machine described in the following Patent Document 1 includes: a case; a washing tub disposed in the case; a drainage path for discharging water in the washing tub to the outside of the case; and a drainage filter attached to and detached from the drainage path.
  • the drain filter includes a comb portion having a plurality of needle teeth.
  • Patent Document 1 Japanese Patent Laid-Open No. 2020-103718
  • the present invention was made under this background, and an object of the present invention is to provide a filter device capable of suppressing clogging of a filter and improving maintainability, and a washing machine including the filter device.
  • the present invention relates to a filter device, comprising: a casing provided with an inflow port and an outflow port, the casing allows water in a drainage channel of a washing machine to flow into the casing from the inflow port, and causes the inside of the casing to flow.
  • the water flows out from the outflow port;
  • the filter is arranged in the housing and is provided with a cylindrical inner peripheral surface portion and a plurality of filter holes, the inner peripheral surface portion has a longitudinally extending central axis, and the plurality of filter holes are provided.
  • Filter holes are distributed on the inner peripheral surface portion, and the filter has an intake port for taking in water flowing into the housing from the inflow port into the filter, and the filter is provided on the inner periphery of the filter.
  • the face captures the foreign matter contained in the water flowing out of the filter hole from the filter hole after being taken into the filter from the intake port;
  • the suction port rotates around the central axis due to the water force of the water taken into the filter;
  • the scraping member is supported by the rotating body in the filter, and scrapes the foreign matter from the inner peripheral surface, so that the The scraping member is slidable in the radial direction with respect to the center axis between a forward position approaching the inner peripheral surface portion and a retracted position away from the inner peripheral surface portion toward the center axis side; and biasing a member that biases the scraping member toward the retracted position.
  • the present invention is characterized in that the rotor includes a vane for receiving the water taken into the filter from the intake port, and the vane is arranged in a lower half of the inner space of the filter. In an upper position, the intake port faces the blade from a circumferential direction around the central axis or a tangential direction with respect to the circumferential direction.
  • the present invention is characterized in that the filter device includes a weight coupled to the scraping member.
  • the present invention is characterized in that an overflow hole for allowing water in the filter to overflow outside the filter is provided in a region above the filter hole in the filter, and the casing
  • the body is provided with a concave portion recessed so as to be away from the overflow hole, and the outflow port is arranged directly below the overflow hole.
  • the present invention is a washing machine comprising: a washing tub that accommodates laundry; a drainage path having an upstream path connected to the washing tub, and a first downstream path and a second downstream path branching from the upstream path; a valve that opens and closes the first downstream passage; a pump that is provided in the second downstream passage to allow water in the upstream passage to flow to the second downstream passage; and the filter device that is provided to the second downstream passage A downstream region in the second downstream path that is farther from the upstream path than the pump.
  • the filter device after the water flowing in the drain passage of the washing machine flows into the casing from the inflow port and is taken into the filter from the intake port, the water flows out from the filter hole of the inner peripheral surface of the filter to the The filter is discharged to the outside of the washing machine from the outflow port of the casing.
  • water flows out of the filter from the filter holes foreign matter contained in the water is captured on the inner peripheral surface of the filter.
  • the scraping member supported by the rotating body counteracts the urging force of the urging member by centrifugal force, and advances from the retracted position It comes into contact with the foreign matter on the inner peripheral surface of the filter to the advanced position. Then, since the rotational speed of the rotating body is temporarily lowered, the centrifugal force is reduced, and therefore, the scraping member is retracted to the retracted position side by the biasing force of the biasing member.
  • the scraping member advances to the advance position again and comes into contact with the foreign matter on the inner peripheral surface portion of the filter.
  • the scraping member repeatedly advances and retreats between the advancing position and the retreating position to contact the foreign matter on the inner peripheral surface of the filter multiple times, thereby efficiently removing the filter from the outer surface of the filter. Scrape the foreign body from the inner face. Thereby, the clogging of the filter in the filter hole can be suppressed, and the maintenance property can be improved.
  • the blade included in the rotating body receives the water taken in from the intake port into the filter, whereby the rotating body rotates.
  • the vane is arranged above the lower half of the inner space of the filter where water is likely to accumulate.
  • the intake port faces the blade from the circumferential direction around the central axis of the inner peripheral surface portion of the filter, that is, the rotation axis of the rotating body, or the tangential direction with respect to the circumferential direction.
  • the scraping member can easily advance to the advancing position, and thus the scraping member can scrape the foreign matter from the inner peripheral surface portion of the filter more efficiently. Thereby, the clogging of the filter in the filter hole can be further suppressed, and the maintainability can be further improved.
  • the scraping member since the weight coupled to the scraping member generates a large centrifugal force, the scraping member can easily advance to the advanced position, so that the scraping member can scrape the foreign matter from the inner peripheral surface of the filter more efficiently. Thereby, the clogging of the filter in the filter hole can be further suppressed, and the maintainability can be further improved.
  • the water in the filter overflows from the overflow hole to the outside of the filter and flows out of the outflow port to the outside of the casing, so that the water flowing through the drain path of the washing machine can be drained smoothly. to the outside of the aircraft.
  • the casing is provided with a recessed portion that is recessed so as to be away from the overflow hole, and the outflow port is arranged just below the overflow hole, the water overflowing from the overflow hole to the outside of the filter can be quickly transferred from the recessed portion to the outflow port and discharged to the off the plane.
  • the portion on the downstream side of the upstream path connected to the washing tub is branched into the first downstream path and the second downstream path.
  • a pump and filter device are provided in the second downstream path.
  • the pump operates in a state where the drain valve closes the first downstream path
  • the water in the upstream path flows through the second downstream path and is discharged to the outside of the machine after foreign matter is captured by the filter device.
  • the first downstream path may be opened by stopping the pump and passing through the drain valve. Then, the remaining water flows from the upstream path through the first downstream path and is discharged to the outside of the machine. Therefore, it is possible to suppress noise caused by the operation of the pump in the state of swallowing air, and to remove the water in the washing tub without remaining. discharged to the outside of the machine.
  • Fig. 1 is a schematic vertical cross-sectional right view of the washing machine according to the embodiment of the present invention.
  • FIG. 2 is a perspective view of a filter device included in the washing machine.
  • FIG 3 is a perspective view of a housing included in the filter device.
  • FIG. 4 is a perspective view of a filter unit included in the filter device.
  • FIG. 5 is a perspective view of a filter included in the filter unit.
  • FIG. 6 is a perspective view of the filter viewed from a direction different from that in FIG. 5 .
  • FIG. 7 is a perspective view of a cleaning unit included in the filter unit.
  • Fig. 8 is a longitudinal cross-sectional view of the filter device.
  • FIG. 9 is a cross-sectional view taken along line AA of FIG. 8 .
  • FIG. 10 is a cross-sectional view taken along line BB of FIG. 8 .
  • FIG. 11 is a longitudinal cross-sectional view of the filter device when cut at a position different from that in FIG. 8 .
  • Fig. 12 is a cross-sectional view showing a state in which the scraping member of the cleaning unit is located at the advanced position at the same cross-sectional position as in Fig. 9 .
  • FIG. 1 is a schematic vertical cross-sectional right side view of a washing machine 1 according to an embodiment of the present invention.
  • 1 is called the left-right direction X of the washing machine 1
  • the left-right direction in FIG. 1 is called the front-rear direction Y of the washing machine 1
  • the vertical direction in FIG. 1 is called the vertical direction of the washing machine 1.
  • Z In the left-right direction X, the back side of the paper surface of FIG. 1 is called the left side X1, and the front side of the paper surface of FIG. 1 is called the right side X2.
  • the left side of FIG. 1 is called front side Y1
  • the right side of FIG. 1 is called rear side Y2.
  • the upper side is referred to as an upper side Z1
  • the lower side is referred to as a lower side Z2.
  • the washing machine 1 includes a vertical washing machine, a front-loading washing machine, and a two-tub washing machine, but the following will describe the washing machine 1 by taking an example of a vertical washing machine that performs only a washing operation without a drying function.
  • the washing machine 1 includes: a box body 2, which constitutes the outline of the washing machine 1; a washing tub 5, which is composed of an outer tub 3 and an inner tub 4 arranged in the box body 2; a rotating wing 6, which is accommodated in the inner tub 4; an electric motor 7, which generates The torque that rotates the inner tub 4 and the rotary blade 6 , and the transmission mechanism 8 switch the transmission target of the torque generated by the motor 7 .
  • the case 2 is made of metal, for example, and is formed in a box shape.
  • An opening 2B that communicates the inside and the outside of the case 2 is formed on the upper surface 2A of the case 2 .
  • a door 9 that opens and closes the opening 2B is provided on the upper surface 2A.
  • the display operation part 10 which consists of a touch panel etc. is provided in the area
  • the display operation unit may be configured to be divided into a display unit such as a liquid crystal panel and an operation unit such as switches and buttons.
  • the outer tub 3 is formed in a bottomed cylindrical shape with an opening 3A formed at the upper end.
  • the tub 3 is connected to the case 2 via the boom 11, whereby the washing tub 5 is elastically supported.
  • the opening 3A is arranged just below the opening 2B of the case 2 .
  • Water can be stored in the outer barrel 3 .
  • the washing machine 1 includes a drainage path 12 for discharging the water stored in the outer tub 3 to the outside of the machine, that is, to the outside of the washing machine 1 .
  • the drainage passage 12 has an upstream passage 12A connected to the tub 3 from the lower side Z2, and a first downstream passage 12B and a second downstream passage 12C branched from the upstream passage 12A.
  • the first downstream path 12B is pulled out of the machine.
  • the second downstream passage 12C merges with the first downstream passage 12B in the casing 2 .
  • the structure related to the second downstream path 12C will be described later.
  • a drain valve 13 which is opened and closed in order to start or stop the discharge of water from the tub 3, that is, to drain the water.
  • the drain valve 13 is opened, the first downstream passage 12B is opened, and thus draining starts (see the solid arrow in FIG. 1 ).
  • the drain valve 13 is closed, the first downstream passage 12B is closed, and thus the drain is stopped.
  • the inner tub 4 has a central axis J extending in the up-down direction Z, is formed in a bottomed cylindrical shape slightly smaller than the outer tub 3, and can accommodate the laundry Q inside.
  • a port 4A is formed at the upper end of the inner tub 4 .
  • the inlet and outlet 4A are in a state of communicating with the opening 3A of the tub 3 and the opening 2B of the case 2 from the lower side Z2.
  • the user of the washing machine 1 opens the door 9 to open the opening 2B, the opening 3A, and the entrance 4A, and takes out the laundry Q into the inner tub 4 .
  • the inner tub 4 is coaxially accommodated in the outer tub 3, and is disposed along the vertical direction Z, that is, longitudinally disposed.
  • the inner tub 4 in the state accommodated in the outer tub 3 is rotatable around the central axis J.
  • a plurality of through-holes (not shown) are formed in the inner tub 4 , and the water in the outer tub 3 can travel back and forth between the outer tub 3 and the inner tub 4 via the through holes.
  • the bottom wall of the inner tub 4 is provided with a tubular support shaft 14 extending downward Z2 along the central axis J and penetrating the bottom wall of the outer tub 3 .
  • the rotor 6 is a so-called pulsator, is formed in a disk shape with the central axis J as the center, and is disposed on the bottom wall of the inner tub 4 .
  • the rotary blade 6 is provided with a rotary shaft 15 extending from its center to the lower side Z2 along the central axis J.
  • the rotary shaft 15 is inserted through the hollow portion of the support shaft 14 , and the lower end portion of the rotary shaft 15 is positioned on the lower side Z2 than the bottom wall of the outer tub 3 .
  • the motor 7 has an output shaft 16 that protrudes toward the upper side Z1 and rotates about the center axis J, and is disposed on the lower side Z2 of the inner tub 4 .
  • the transmission mechanism 8 is an electric clutch interposed between the lower ends of the support shaft 14 and the rotating shaft 15 and the upper end of the output shaft 16 .
  • the transmission mechanism 8 selectively transmits the torque output by the motor 7 from the output shaft 16 to one or both of the support shaft 14 and the rotating shaft 15 .
  • the washing machine 1 In association with the water supply of the outer tub 3 and the inner tub 4 , the washing machine 1 includes a water supply passage 17 for supplying tap water from a faucet (not shown) into the inner tub 4 .
  • One end (not shown) of the water supply passage 17 is pulled out of the casing 2 and connected to a faucet.
  • the other end of the water supply passage 17 faces the inlet and outlet 4A of the inner tub 4 from the upper side Z1 as a water supply port 17A arranged in the casing 2 .
  • An openable and closable water supply valve 18 is provided in a portion of the water supply passage 17 arranged in the casing 2 .
  • the washing machine 1 includes a control unit 19 composed of a microcomputer or the like.
  • the motor 7 , the transmission mechanism 8 , the display operation unit 10 , the drain valve 13 , and the water supply valve 18 are electrically connected to the control unit 19 , respectively.
  • the user inputs the operation contents of the display operation unit 10 to the control unit 19, and the control unit 19 controls the display contents of the display operation unit 10.
  • the control unit 19 executes a washing operation for washing the laundry Q in the washing tub 5 by controlling the operations of the motor 7 , the transmission mechanism 8 , the drain valve 13 , and the water supply valve 18 .
  • the washing operation includes: a cleaning process of washing the laundry Q in the inner tub 4 of the washing tub 5; a rinsing process of rinsing the laundry Q after the cleaning process; and a dehydration process of dehydrating the laundry Q after the rinsing process .
  • the control unit 19 supplies water into the washing tub 5 by opening the water supply valve 18 for a predetermined time with the drain valve 13 closed (see the dotted arrow in FIG. 1 ).
  • the control part 19 may not open the water supply valve 18, but may supply the bath water into the washing tub 5 by operating a bath water pump (not shown). The user may open the door 9 and put the detergent into the inner tub 4 from the inlet and outlet 4A at the timing before or after the water supply.
  • the controller 19 controls the motor 7 and the transmission mechanism 8 to rotate the rotor 6 after the water supply is stopped. Thereby, the laundry Q in the inner tub 4 is washed by being stirred or by decomposing the dirt with the detergent. Finally, as a part of the drainage process, the control unit 19 opens the drainage valve 13 to drain the washing tub 5 .
  • the control unit 19 stores tap water in the washing tub 5 by opening the water supply valve 18 for a predetermined time with the drain valve 13 closed.
  • the control unit 19 that has completed the water supply controls the motor 7 and the transmission mechanism 8 to rotate the rotor 6 .
  • the laundry Q in the inner tub 4 is rinsed.
  • the user can also open the door 9 to put the softener into the inner tub 4 from the inlet and outlet 4A before or after the water is supplied. The softener will soak through the laundry Q.
  • the control unit 19 executes the drainage process.
  • control unit 19 controls the motor 7 and the transmission mechanism 8 with the drain valve 13 open to rotate the inner tub 4 at a predetermined dehydration rotation speed. Thereby, the laundry Q in the inner tub 4 is dehydrated by centrifugal force.
  • the second downstream passage 12C has an upstream area 12CA connected to a branch position of the upstream passage 12A, and a downstream area 12CB further away from the branch position than the upstream area 12CA.
  • the upstream area 12CA extends from the branch position, for example, to the rear side Y2 and then bends to the upper side Z1, and extends to the upper side Z1 along the peripheral wall of the outer tub 3 in the space 2C in the casing 2 that is further to the rear side Y2 than the outer tub 3.
  • the downstream region 12CB is arranged in the space 2C, for example, on the rear side Y2 of the upstream region 12CA, extends to the lower side Z2, and merges with the first downstream passage 12B.
  • the washing machine 1 includes the electric pump P provided in the upstream area 12CA, and the filter device 20 provided in the downstream area 12CB.
  • the filter device 20 traps foreign matter contained in the water flowing from the upstream passage 12A to the second downstream passage 12C in the drainage passage 12 .
  • the foreign matters that are captured by the filter device 20 are hair, lint, and dust.
  • the dust also includes microscopic garbage such as microplastics.
  • the structure which restricts the flow of water in the 1st downstream passage 12B of the drain passage 12 is not provided outside the drain valve 13 .
  • FIG. 2 is a perspective view of the filter device 20 when viewed from the front side Y1.
  • the filter device 20 includes: a box-shaped casing 21 , which constitutes a casing of the filter device 20 ; and a filter unit 22 , most of which are accommodated in the casing 21 .
  • FIG. 3 is a perspective view of the casing 21 when viewed from the front side Y1.
  • the casing 21 integrally has: a semicircular bottom wall 21A bulging toward the rear side Y2; a vertical wall 21B rising from a front edge extending in the left-right direction X in the bottom wall 21A; and a curved wall 21C extending from the bottom
  • the arc-shaped edge in the wall 21A is erected and spanned between the left and right ends of the vertical wall 21B.
  • the space surrounded by the vertical wall 21B and the curved wall 21C and blocked by the bottom wall 21A is the inner space 21D of the casing 21 .
  • the inner space 21D is opened to the upper side Z1 through a semicircular opening 21E surrounded by the upper edges of the vertical wall 21B and the curved wall 21C.
  • a circular tube-shaped outflow passage 21F protruding to the lower side Z2 is provided at the right position in the front end portion of the bottom wall 21A.
  • the inner space of the outflow passage 21F is an outflow port 21G that communicates with the inner space 21D from the lower side Z2.
  • a circular tubular inflow passage 21H protruding to the front side Y1 is provided at an upper position in the left end portion of the front surface of the vertical wall 21B.
  • the internal space of the inflow passage 21H is an inflow port 21I that communicates with the internal space 21D from the front side Y1.
  • the rib-shaped 1st engaging part 21J extended in the left-right direction X is provided in the upper end part of the front surface of the vertical wall 21B.
  • a rib-shaped second engaging portion 21K extending in the left-right direction X while being curved is provided on the upper end portion of the inner peripheral surface of the curved wall 21C facing the inner space 21D from the rear side Y2 .
  • FIG. 4 is a perspective view of the filter unit 22 when viewed from the front side Y1.
  • the filter unit 22 includes a filter 23 and a cleaning unit 24 .
  • the filter 23 has a cylindrical shape, specifically a cylindrical overall shape, and has a cylindrical inner peripheral surface portion 23A that has a cylindrical inner peripheral surface portion.
  • 23A has a center axis K extending in the longitudinal direction, that is, the vertical direction Z.
  • the outer peripheral surface 23B of the filter 23 may be the same cylindrical shape as 23A of inner peripheral surface parts, and a square cylindrical shape may be sufficient as it.
  • the filter 23 includes: a cylindrical frame 25 constituting a casing of the filter 23; and a mesh sheet 26 attached to the frame 25 (see FIG. 6 ). It should be noted that the illustration of the mesh sheet 26 is omitted in FIG. 5 .
  • the radial direction with reference to the central axis K is referred to as the radial direction R
  • the circumferential direction around the central axis K is referred to as the circumferential direction S.
  • the radially inner side R1 the direction close to the central axis K
  • the radially outer side R2 the direction away from the central axis K
  • the frame 25 integrally includes: a disk-shaped bottom wall 25A; and a cylindrical peripheral wall 25B, and rises from the entire area of the outer peripheral edge of the bottom wall 25A.
  • the space surrounded by the circumferential wall 25B and blocked by the bottom wall 25A is the inner space 25C of the frame 25 .
  • the inner space 25C is also the inner space of the filter 23 .
  • the inner space 25C is opened to the upper side Z1 through a circular opening 25D surrounded by the upper edge of the peripheral wall 25B.
  • a circular tube-shaped relay path 25E protruding to the front side Y1 along the tangential direction T with respect to the circumferential direction S is provided at approximately the center of the circumferential wall 25B in the vertical direction Z.
  • the internal space of the relay path 25E is an intake port 25F that communicates with the internal space 25C from the tangential direction T. As shown in FIG.
  • a plurality of through holes 25G are formed in the bottom wall 25A and the peripheral wall 25B, respectively.
  • Eight through holes 25G formed in the bottom wall 25A are provided at equal intervals in the circumferential direction S, and each of the through holes 25G is formed into an isosceles trapezoid that expands in the circumferential direction S toward the radially outer side R2.
  • the plurality of through holes 25G formed in the peripheral wall 25B are arranged to be distributed in regions of the peripheral wall 25B that avoid the relay path 25E, and each of the through holes 25G is formed into a rectangle whose four corners are rounded.
  • the through-holes 25G are arranged so as to be arranged in three layers up and down in the region of substantially the first half of the peripheral wall 25B, and arranged in two layers in the region of the substantially rear half of the peripheral wall 25B.
  • Eight lowermost through-holes 25G are provided so as to be arranged at equal intervals over the entire area in the circumferential direction S of the lower end portion of the peripheral wall 25B.
  • Four uppermost through-holes 25G have the same size as the lowermost through-holes 25G in the region of substantially the latter half of the circumferential wall 25B, and are arranged at equal intervals in the circumferential direction S. As shown in FIG.
  • the size in the vertical direction Z of the through-holes 25G of the second layer from the top in the region of approximately the first half of the peripheral wall 25B is approximately half of that of the through-holes 25G of the lowermost layer, and three through-holes 25G of the second layer are arranged in parallel. They are arranged at equal intervals in the circumferential direction S at the same height as the relay path 25E.
  • Four uppermost through-holes 25G in the substantially front half region of the circumferential wall 25B are provided as the smallest overflow holes 25H in both the vertical direction Z and the circumferential direction S, and are arranged in the circumferential direction S at equal intervals.
  • the upper end of the uppermost through-hole 25G in the region of the substantially rear half of the peripheral wall 25B is arranged at the substantially same height position as the substantially center in the vertical direction Z of the overflow hole 25H.
  • Ribs 25I for reinforcing the frame 25 are provided on the lower surface of the bottom wall 25A at positions avoiding the through holes 25G and at positions on the outer peripheral surface of the peripheral wall 25B avoiding the relay paths 25E and the through holes 25G.
  • the rib 25I extends in the circumferential direction S and the radial direction R on the lower surface of the bottom wall 25A (see FIG. 6 ), and extends in the vertical direction Z and the circumferential direction S on the outer peripheral surface of the circumferential wall 25B.
  • a flange 25J that protrudes radially outward R2 over substantially the entire area in the circumferential direction S is provided at the upper end portion of the circumferential wall 25B.
  • Notches 25K formed by notching the flange 25J in the vertical direction Z are provided at a plurality of positions spaced at equal intervals in the circumferential direction S in the flange 25J.
  • the mesh sheet 26 is provided in all the through holes 25G except for the overflow hole 25H on the uppermost layer of the peripheral wall 25B, and blocks each of the through holes 25G to constitute the inner peripheral surface portion 23A of the filter 23 (see FIG. 5 ). ).
  • Each mesh piece 26 may be arranged so as to be bent along the circumferential direction S.
  • An innumerable number of filter holes 26A as fine through holes are formed in each mesh sheet 26 . Therefore, a plurality of filter holes 26A are distributed in the inner peripheral surface portion 23A of the filter 23 .
  • the overflow hole 25H is provided in the area
  • a grid integrally formed with the frame 25 may be provided instead of the mesh sheet 26, and in this case, the gaps in the grid function as filter holes 26A.
  • the size of the filter hole 26A can be arbitrarily set, but is set to 10 ⁇ m to 20 ⁇ m when the microplastic is to be captured, and is set to about 500 ⁇ m when the microplastic is not to be captured.
  • FIG. 7 is a perspective view of the cleaning unit 24 when viewed from the front side Y1.
  • the cleaning unit 24 includes: a cover 30; a shaft 31 extending from the cover 30 to the lower side Z2; a rotating body 32 rotatably supported by the shaft 31; a pair of scraping members 33 supported by the rotating body 32; , which are connected to each scraping member 33 .
  • the cover 30 has a semicircular shape and size substantially the same as those of the bottom wall 21A (refer to FIG. 3 ) of the case 21 .
  • a front edge extending in the left-right direction X of the cover 30 is provided with a frame-like shape elongated in the left-right direction X and a third engaging portion 30A that hangs down from the front edge.
  • An annular outer rib 30B that surrounds the outer peripheral edge of the cover 30 and protrudes downward Z2 is provided on the lower surface of the cover 30 .
  • the outer rib 30B has a semicircular profile that is one turn smaller than the outer periphery of the cover 30 .
  • a claw-shaped fourth engaging portion 30C that protrudes toward the lower side Z2 and then bends toward the rear side Y2 is provided on the arc-shaped edge of the outer rib 30B that bulges toward the rear side Y2 .
  • the outer peripheral surface of the outer rib 30B is fitted with a seal 35 that wraps the outer peripheral surface.
  • annular inner rib 30D protruding to the lower side Z2 is provided in a region surrounded by the outer rib 30B on the lower surface of the cover 30 .
  • the lower end of the inner rib 30D is arranged on the upper side Z1 , which is a position higher than the lower end of the outer rib 30B.
  • a cylindrical support portion 30E protruding to the lower side Z2 is provided at a position corresponding to the center of the inner rib 30D on the lower surface of the cover 30 .
  • FIG. 8 is a longitudinal cross-sectional view of the filter device 20 .
  • the filter 23 is arranged in the casing 21 , and the cover 30 is assembled so as to block the opening 21E of the casing 21 and the opening 25D of the frame 25 of the filter 23 from the upper side Z1 .
  • the first engaging portion 21J of the casing 21 is engaged with the third engaging portion 30A of the cover 30
  • the second engaging portion 21K of the casing 21 is engaged with the fourth engaging portion 30C of the cover 30 , whereby the cover 30 It is fixed so that it will not come off accidentally (refer to FIG. 11).
  • the outer rib 30B is sandwiched between the upper end portions of the vertical wall 21B and the curved wall 21C of the housing 21 and the upper end portion of the circumferential wall 25B of the frame 25 of the filter 23.
  • the upper end of the circumferential wall 25B The portion is sandwiched between the outer rib 30B and the inner rib 30D (see also FIG. 11 ).
  • the support portion 30E provided on the lower surface of the cover 30 is arranged on the central axis K of the inner peripheral surface portion 23A of the filter 23 .
  • a cylindrical support portion 25L protruding to the upper side Z1 is provided at a position corresponding to the central axis K in the bottom wall 25A of the frame 25 of the filter 23 .
  • the gap between the housing 21 and the outer rib 30B is blocked by the seal 35 .
  • the claw-shaped positioning part 30F (refer FIG. 11) which protrudes radially inward R1 is provided in the inner peripheral surface of the outer side rib 30B.
  • the filter 23 in the casing 21 is positioned in a state where the bottom wall 25A of the frame 25 is slightly suspended from the bottom wall 21A of the casing 21 . It should be noted that the user only needs to shift the filter 23 relative to the cover 30 in the circumferential direction S to align the positioning portion 30F with the notch 25K (see FIG.
  • the cleaning unit 24 can be disassembled and only the filter 23 can be removed.
  • the shaft 31 , the rotating body 32 , the scraping member 33 , and the weight 34 will be described using the circumferential direction S and the radial direction R with reference to the state in which the cover 30 is attached to the housing 21 and the filter 23 .
  • the shaft 31 is, for example, a metal shaft, and is arranged on the central axis K in the filter 23 , that is, in the inner space 25C of the frame 25 of the filter 23 .
  • the upper end portion is inserted into the support portion 30E of the cover 30
  • the lower end portion is inserted into the support portion 25L of the frame 25 of the filter 23 .
  • a pair of upper and lower washers 36 are attached to the upper end portion of the shaft 31 so as to sandwich the support portion 30E.
  • the other gaskets 37 are arranged on the support portion 25L.
  • the rotating body 32 is arranged in the filter 23 .
  • the rotating body 32 can be divided into an upper unit 40 and a lower unit 41 .
  • FIG. 9 is a cross-sectional view taken along line AA of FIG. 8 .
  • the upper unit 40 integrally includes: a disc-shaped base 40A arranged coaxially with the central axis K; an upper cylindrical portion 40B protruding upward Z1 from the center of the upper surface of the base 40A; and a pair of upper guide portions 40C is arranged on the upper surface of the base 40A so as to sandwich the upper cylindrical portion 40B.
  • the upper unit 40 integrally includes a lower cylindrical portion 40D protruding from the center of the lower surface of the base 40A to the lower side Z2, and a plurality of vanes 40E arranged on the base 40A so as to surround the lower cylindrical portion 40D the lower surface (see Figure 8).
  • each recesses 40F which are recessed toward the radially inner side R1 are each formed at two places which are separated by 180 degrees in the circumferential direction S.
  • the pair of upper guide portions 40C are arranged one by one at the same positions as the respective recesses 40F in the circumferential direction S, and are thus arranged on the same straight line extending in the radial direction R.
  • Each upper guide portion 40C is a hollow body elongated in the radial direction R extending from the upper cylindrical portion 40B to the recess 40F.
  • the upper cylindrical portion 40B can also be regarded as the end portion of the radially inner side R1 in each of the upper guide portions 40C.
  • Each upper guide portion 40C is provided with: an inner space 40G, which is located on the radially inner side R1; an outer space 40H, which is located on the radially outer side R2 of the inner space 40G; a partition wall 40I is arranged between the inner space 40G and the outer space 40H; And the end wall 40J is located radially outward R2 rather than the outer space 40H.
  • the inner space 40G and the outer space 40H communicate with each other via the through-hole 40K provided in the partition wall 40I.
  • the outer space 40H is opened to the radially outer side R2 via the through hole 40L provided in the end wall 40J.
  • the inner space 40G and the outer space 40H are open to the upper side Z1.
  • the upper unit 40 further includes a pair of upper covers 42 provided corresponding to the pair of upper guide portions 40C.
  • the upper cover 42 is long in the radial direction R, and both ends of the upper cover 42 in the circumferential direction S are bent to the lower side Z2.
  • the upper cover 42 is fitted to the corresponding upper guide portion 40C, sandwiches the upper guide portion 40C from both sides in the circumferential direction S, and blocks the inner space 40G and the outer space 40H which are the inner space of the upper guide portion 40C from the upper side Z1 (See also Figure 8). Thereby, foreign matter is prevented from entering the inner space 40G and the outer space 40H.
  • the upper cover 42 can be attached to and detached from the upper guide portion 40C by a well-known locking structure such as screwing and snapping.
  • the inner space of the upper cylindrical portion 40B and the inner space of the lower cylindrical portion 40D are in a continuous state to constitute the upper insertion hole 40M (see FIG. 8 ).
  • the shaft 31 is inserted through the upper insertion hole 40M.
  • the whole rotating body 32 can rotate about the center axis line K.
  • the inner diameter of the upper cylindrical portion 40B is smaller than the inner diameter of the lower cylindrical portion 40D and is approximately the same as the outer diameter of the shaft 31 , so that the rotary body 32 , especially the substantially upper half of the rotary body 32 can rotate smoothly without rattling.
  • a bearing (not shown) may be arrange
  • the lower cylindrical portion 40D is provided with a locking hole 40N penetrating the lower cylindrical portion 40D in the radial direction R (see FIGS. 7 and 8 ).
  • the two locking holes 40N are provided at two places 180 degrees apart in the circumferential direction S one by one.
  • the vane 40E has a substantially rectangular plate shape when viewed in the circumferential direction S, is arranged radially outward R2 away from the lower cylindrical portion 40D, and is connected to the outer peripheral edge of the base 40A (see Fig. 7 ). Corners of both ends in the radial direction R in the lower end portion of the vane 40E are rounded.
  • the eight blades 40E are arranged in the circumferential direction S at equal intervals.
  • wing 40E is arrange
  • wing 40E is arrange
  • the overflow hole 25H of the frame 25 of the filter 23 is arrange
  • a pair of left and right recesses 21L exist, and constitute a part of the inner space 21D of the casing 21 , particularly the gap 21M between the filter 23 and the casing 21 .
  • the clearance 21M of this part is narrower in the radial direction R than the recessed part 21L.
  • the overflow hole 25H at the right end overlaps with the outflow port 21G of the bottom wall 21A of the casing 21 in a plan view, so the outflow port 21G is arranged directly below the overflow hole 25H, that is, located on the lower side Z2 of the overflow hole 25H and at the bottom of the overflow hole 25H.
  • the position in the circumferential direction S coincides with the overflow hole 25H.
  • FIG. 10 is a cross-sectional view taken along line BB of FIG. 8 .
  • the intake port 25F of the frame 25 of the filter 23 is arranged at the same height as the vane 40E in the filter 23 , and faces the vane 40E from the circumferential direction S, strictly speaking, the tangential direction T with respect to the circumferential direction S.
  • the intake port 25F faces the blade 40E from the circumferential direction S or the tangential direction T.
  • the inflow port 21I of the casing 21 is arrange
  • FIG. 11 is a longitudinal cross-sectional view of the filter device 20 when cut along another position shifted by 180 degrees from FIG. 8 in the circumferential direction S.
  • the lower unit 41 integrally includes a cylindrical portion 41A disposed directly below the upper cylindrical portion 40B of the upper unit 40 , a locking portion 41B extending from the upper end of the cylindrical portion 41A to the upper side Z1 , and a pair of lower guide portions 41C is disposed so as to sandwich the cylindrical portion 41A.
  • the inner space of the cylindrical portion 41A constitutes the lower insertion hole 41D.
  • the shaft 31 is inserted through the lower insertion hole 41D. Since the inner diameter of the lower insertion hole 41D is substantially the same as the outer diameter of the shaft 31, the rotating body 32, especially the lower half of the rotating body 32, can smoothly rotate without rattling.
  • a bearing (not shown) may be arrange
  • the locking portion 41B is inserted through the upper insertion hole 40M, which is the inner space of the upper cylindrical portion 40B, from the lower side Z2 in a state not in contact with the shaft 31 .
  • the upper end portion of the locking portion 41B is provided with a pair of claw portions 41E protruding oppositely to each other in the radial direction outer side R2, and the pair of claw portions 41E are engaged with the locking holes 40N of the lower cylindrical portion 40D one by one (see FIG. 7 ). and Figure 8).
  • the lower unit 41 is coupled to the upper unit 40 so as to be rotatable integrally with the upper unit 40 .
  • the locking portion 41B is provided with a positioning portion 41F that positions the lower unit 41 in the vertical direction Z with respect to the upper unit 40 by contacting the lower cylindrical portion 40D from the lower side Z2.
  • the pair of lower guide portions 41C are arranged on the same straight line extending in the radial direction R. As shown in FIG. Each lower guide portion 41C is a hollow body elongated and extended radially outward R2 from the cylindrical portion 41A. The cylindrical portion 41A can also be regarded as the end portion of the radially inner side R1 in each of the lower guide portions 41C. Each lower guide portion 41C is configured in the same manner as the upper guide portion 40C of the upper unit 40 . That is, 41 C of pair of lower guide parts are arrange
  • each lower guide portion 41C is provided with: an inner space 41G located radially inward R1; an outer space 41H located radially outer R2 rather than the inner space 41G; and a partition wall 41I disposed between the inner space 41G and the outer space 41H and the end wall 41J, which is located on the radially outer side R2 of the outer space 41H.
  • the inner space 41G and the outer space 41H communicate with each other via the through-hole 41K provided in the partition wall 41I.
  • the outer space 41H is opened to the radially outer side R2 via the through hole 41L provided in the end wall 41J.
  • the inner space 41G and the outer space 41H are opened to the lower side Z2.
  • the lower unit 41 further includes a pair of lower covers 43 provided corresponding to the lower guide portion 41C.
  • the lower cover 43 is long in the radial direction R, and both ends of the lower cover 43 in the circumferential direction S are bent upward Z1 .
  • the lower cover 43 is fitted to the corresponding lower guide portion 41C, sandwiches the lower guide portion 41C from both sides in the circumferential direction S, and blocks the inner space 41G and the outer space as the inner space of the lower guide portion 41C from the lower side Z2 41H (see Figure 8). Thereby, foreign matter is prevented from entering the inner space 41G and the outer space 41H.
  • the lower cover 43 can be attached to and detached from the lower guide portion 41C by a well-known locking structure such as screwing and snapping.
  • each scraping member 33 includes: a total of two slide pins 45 arranged one by one in the respective inner spaces of the upper guide part 40C and the lower guide part 41C; a seat 47 fixed to the slide pins 45 via bolts 46; and a brush 48 provided in Block 47.
  • the slide pin 45 has a cylindrical shape extending in the radial direction R. As shown in FIG. Referring to the upper left slide pin 45 in FIG. 11 , an annular inner flange portion 45A protruding from the outer peripheral surface of the slide pin 45 is provided at the end portion of the slide pin 45 on the radially inner side R1 . An annular outer flange portion 45B protruding from the outer peripheral surface of the slide pin 45 is provided in the middle portion in the radial direction R of the slide pin 45 , that is, at the radially outer side R2 than the inner flange portion 45A. A screw hole 45C extending from the end surface of the radially outer side R2 to the outer flange portion 45B is formed in the slide pin 45 .
  • the slide pins 45 arranged in the inner space of the upper guide portion 40C are arranged so as to straddle the inner space 40G and the outer space 40H of the upper guide portion 40C.
  • the inner flange portion 45A is arranged in the inner space 40G
  • the outer flange portion 45B is arranged in the outer space 40H.
  • the slide pin 45 is slidable in the radial direction R. As shown in FIG. When the slide pin 45 slides to the radially outer side R2, the end of the radially outer side R2 of the slide pin 45 can be exposed to the radially outer side R2 from the through hole 40L of the end wall 40J of the upper guide portion 40C.
  • the outer flange part 45B of the slide pin 45 is opposed to the end wall 40J from the radially inner side R1, the slide pin 45 can be prevented from coming off the inner space of the upper guide part 40C.
  • the slide pins 45 arranged in the inner space of the lower guide portion 41C are arranged so as to straddle the inner space 41G and the outer space 41H of the lower guide portion 41C.
  • the inner flange portion 45A is arranged in the inner space 41G
  • the outer flange portion 45B is arranged in the outer space 41H.
  • the slide pin 45 is slidable in the radial direction R. As shown in FIG. When the slide pin 45 slides to the radially outer side R2, the end portion of the radially outer side R2 of the slide pin 45 can be exposed to the radially outer side R2 from the through hole 41L of the end wall 41J of the lower guide portion 41C.
  • the outer flange part 45B of the slide pin 45 is opposed to the end wall 41J from the radially inner side R1, the slide pin 45 can be prevented from coming off the inner space of the lower guide part 41C.
  • the seat 47 has a box shape that is long in the vertical direction Z and thin in the radial direction R, and the inner space thereof is opened to the radially outer side R2. Therefore, the seat 47 has a bottom wall 47A extending in the vertical direction Z; an upper wall 47B extending from the upper end of the bottom wall 47A to the radially outer side R2; and a lower wall 47C extending from the lower end of the bottom wall 47A to the radially outer side R2; The pair of side walls 47D extend from both ends of the bottom wall 47A in the circumferential direction S to the radially outer side R2 (see FIG. 7 ).
  • the dimension in the vertical direction Z of the side wall 47D is substantially the same as the dimension in the vertical direction Z of the inner space 25C of the frame 25 of the filter 23 .
  • the bottom wall 47A of the seat 47 is arranged to face the upper guide portion 40C and the lower guide portion 41C located at the same position as the seat 47 in the circumferential direction S from the radially outer side R2.
  • the brush 48 is composed of bristles which are implanted on the end surfaces of the radially outer side R2 of each of the pair of side walls 47D of the seat 47 and protrude toward the radially outer side R2 (see also FIG. 7 ).
  • the bundles 48A composed of a predetermined number of hairs are provided at equal intervals in the vertical direction Z over substantially the entire region of the end surface of the radially outer R2 of each side wall 47D.
  • the brush 48 may be comprised by the protrusion which can elastically deform.
  • a blade long in the vertical direction Z that protrudes from the side wall 47D to the radially outer side R2 may be used.
  • the weight 34 is a metal plate that is long in the vertical direction Z in the interior space of the seat 47 so as to fit.
  • the above-mentioned bolts 46 penetrate through the bottom wall 47A of the sinker 34 and the base 47 and are attached to the threaded holes 45C of the slide pins 45 one by one.
  • Each scraping member 33 is supported by the upper guide portion 40C and the lower guide portion 41C of the rotary body 32 via the slide pins 45 in the filter 23 , and can slide in the radial direction R according to the sliding of the slide pins 45 .
  • the head 46A of the bolt 46 is arranged so as to be embedded in the inside of the weight 34 so as not to be exposed from the end surface of the radially outer side R2 of the weight 34 .
  • the cleaning unit 24 further includes the urging members 49 that are arranged one by one in the respective inner spaces of the upper guide portion 40C and the lower guide portion 41C.
  • the biasing member 49 is a coil spring extending in the radial direction R. As shown in FIG. In the upper guide portion 40C, the biasing member 49 is arranged in the outer space 40H to surround the slide pin 45, and is always slid toward the radially inner side R1 by being compressed between the end wall 40J and the outer flange portion 45B of the slide pin 45. Pin 45 applies force.
  • the urging member 49 is arranged in the outer space 41H, surrounds the slide pin 45, and is compressed between the end wall 41J and the outer flange portion 45B of the slide pin 45 to always slide toward the radially inner side R1 pair. Pin 45 applies force.
  • each scraping member 33 is located at a retracted position away from the inner peripheral surface portion 23A of the filter 23 toward the center axis J side, that is, radially inner side R1, and in each scraping member 33, a seat 47 is arranged on the base 40A
  • the bottom wall 47A of the seat 47 is in contact with the end wall 40J of the upper guide portion 40C and the end wall 41J of the lower guide portion 41C in the recess 40F located at the same position in the circumferential direction S as the seat 47 (see FIG. 9 ).
  • Each scraping member 33 is always urged to the retracted position by the urging member 49 .
  • the control unit 19 operates the pump P with the drainage valve 13 closed (see FIG. 1 ). Then, the pump P causes the water flowing down from the washing tub 5 to the upstream passage 12A of the drainage passage 12 to flow to the second downstream passage 12C. As indicated by the arrows of the one-dot chain line in FIG. 1 , the water flowing through the second downstream passage 12C rises in the upstream region 12CA of the second downstream passage 12C, and then flows from the inflow port 21I of the casing 21 of the filter device 20 to the inside the housing 21 .
  • the water flowing into the casing 21 from the inflow port 21I goes straight to the intake port 25F of the filter 23 with almost no omission in the middle, and is thereby removed from the intake port 25F.
  • the blade 40E which is taken in into the filter 23 and is showered in the filter 23 from the tangential direction T mentioned above. Then, the entire rotating body 32 having the vanes 40E that receives the water taken in from the intake port 25F into the filter 23 is rotated in one direction of the circumferential direction S by the water force of the water, and in this embodiment, it is viewed in plan view. Rotate clockwise.
  • the water taken into the filter 23 from the intake port 25F flows out from the filter hole 26A of the inner peripheral surface portion 23A of the filter 23 to the outside of the filter 23, that is, the gap 21M between the filter 23 in the casing 21 and the casing 21 .
  • the filter 23 captures the foreign matter contained in the water flowing out of the filter 23 from the filter hole 26A on the inner peripheral surface portion 23A.
  • the water flowing out of the filter 23 may pass through the mesh 26 of the bottom wall 25A of the frame 25 not only radially outward R2 through the mesh 26 of the inner peripheral surface 23A, but also downward Z2.
  • the water flowing out of the filter 23 flows out of the casing 21 from the outflow port 21G of the bottom wall 21A of the casing 21, flows down in the downstream region 12CB of the second downstream passage 12C, merges with the first downstream passage 12B, and is discharged. to the outside of the washing machine 1 (refer to the arrow of the two-dot chain line in FIG. 1 ).
  • the water in the filter 23 flows out of the overflow hole 25H provided in the upper end of the frame 25 . (See FIG. 8 ) It overflows out of the filter 23 and flows out of the casing 21 from the outflow port 21G.
  • the brush 48 scrapes off the inner peripheral surface portion 23A of the filter 23 by contacting the foreign matter on the inner peripheral surface portion 23A of the filter 23 while rotating as a part of the rotating body 32 . foreign body.
  • each scraping member 33 can slide in the radial direction R between the retracted position and the advanced position.
  • each scraping member 33 advances to the advancing position again and comes into contact with the foreign matter on the inner peripheral surface portion 23A of the filter 23 .
  • the scraping member 33 repeatedly advances and retreats between the forward position and the retreat position to contact the foreign matter on the inner peripheral surface portion 23A of the filter 23 multiple times, thereby efficiently Foreign matter is scraped off from the inner peripheral surface portion 23A of the filter 23 .
  • clogging of the filter 23 in the filter hole 26A can be suppressed, and the maintenance property can be improved.
  • the filter device 20 can continue capturing foreign matter for a long time while peeling off the foreign matter adhering to the inner peripheral surface portion 23A, even if it is a minute foreign matter such as microplastics and microfibers, and thus can trap many foreign matter.
  • the scraping member 33 is always located at the forward position, the rotation of the rotating body 32 may be suddenly stopped due to the scraping member 33 being caught on the inner peripheral surface portion 23A or the like.
  • the scraping member 33 is configured in such a way that the smooth rotation of the rotating body 32 can be continuously performed.
  • the vane 40E that rotates the rotor 32 by receiving the water taken into the filter 23 from the intake port 25F is arranged on the upper side Z1 of the lower half of the inner space 25C of the filter 23 where the water tends to accumulate (see FIG. 11). Furthermore, the intake port 25F faces the blade 40E from the circumferential direction S or the tangential direction T (see FIG. 10 ). Thereby, the blade 40E is less likely to receive resistance from the water stored in the lower half of the inner space 25C of the filter 23 , while efficiently receiving the water taken into the filter 23 from the intake port 25F.
  • the rotating body 32 rotates strongly.
  • the scraping member 33 since the scraping member 33 is easily advanced to the forward position by generating a large centrifugal force, the scraping member 33 can scrape the foreign matter from the inner peripheral surface portion 23A of the filter 23 more efficiently. Thereby, clogging of the filter 23 in the filter hole 26A can be further suppressed, and the maintenance property can be further improved.
  • the weight 34 connected to the scraping member 33 since the weight 34 connected to the scraping member 33 generates a large centrifugal force, the scraping member 33 is easily advanced to the advanced position, and thus the scraping member 33 can be scraped from the inner peripheral surface portion 23A of the filter 23 more efficiently. foreign body. Thereby, clogging of the filter 23 in the filter hole 26A can be further suppressed, and the maintenance property can be further improved.
  • the water in the filter 23 overflows from the overflow hole 25H to the outside of the filter 23 and flows out from the outflow port 21G to the outside of the casing 21, so that the water flowing through the drain path 12 of the washing machine 1 can be drained.
  • the water is discharged to the outside of the machine smoothly.
  • the casing 21 is provided with a recessed portion 21L recessed so as to be away from the overflow hole 25H, and the outflow port 21G is arranged directly below the overflow hole 25H (see FIG. 9 ), so that the overflow hole 25H can overflow to the outside of the filter 23
  • the water immediately transferred from the concave portion 21L to the outflow port 21G and discharged to the outside of the machine.
  • the control part 19 judges the water in the washing tub 5 based on the detection value of the water level sensor (not shown) which detects the water level in the washing tub 5, and the elapsed time measured by the timer (not shown). has decreased.
  • the foreign matter peeled off from the inner peripheral surface portion 23A of the filter 23 in the filter device 20 accumulates in the inner space 25C of the frame 25 of the filter 23 from the bottom wall 25A side.
  • the cover 30 of the filter unit 22 is exposed from the upper surface 2A of the casing 2 of the washing machine 1 (see Fig. 1 ). Therefore, the user can remove the first engaging portion 21J and the second engaging portion 21K of the housing 21 from the third engaging portion 30A and the fourth engaging portion 30C of the cover 30 to remove the filter unit 22 for maintenance. It is detached from the washing machine 1 and disassembled as described above, and the foreign matter in the filter 23 is removed.
  • the user since the filter device 20 can continue to capture foreign matter for a long time, the user does not need to maintain the filter 23 every day. It should be noted that the user can assemble the filter unit 22 in the reverse order and put it back into the washing machine 1 .
  • the first downstream passage 12B in the drain passage 12 may be omitted, and the drain valve 13 may also be omitted.
  • the downstream path of the drainage path 12 is only the second downstream path 12C, and the downstream region 12CB of the second downstream path 12C is drawn out of the washing machine 1 .
  • the 1st downstream path 12B and the 2nd downstream path 12C may be drawn out of the washing machine 1 without merging, respectively.

Abstract

一种能抑制过滤器的堵塞来谋求维护性的提高的过滤装置和包括该过滤装置的洗衣机。过滤装置(20)包括：壳体(21)；过滤器(23)，配置于壳体(21)内；旋转体(32)，配置于过滤器(23)内；以及刮取构件(33)，在过滤器(23)内由旋转体(32)支承。过滤器(23)将流入至壳体(21)内的水从取入口(25F)取入至过滤器(23)内，在内周面部(23A)捕获该水中所含的异物。旋转体(32)通过从取入口(25F)取入至过滤器(23)内的水的水势而旋转。刮取构件(33)能在接近内周面部(23A)的前进位置与远离内周面部(23A)的退避位置之间滑动，被施力构件(49)向退避位置施力。

Description

过滤装置及洗衣机 技术领域
本发明涉及一种过滤装置和包括过滤装置的洗衣机。
背景技术
下述专利文献1所记载的洗衣机包括：箱体；洗涤桶，配置于箱体内；排水路，将洗涤桶内的水排出至箱体外；以及排水过滤器，装卸于排水路。排水过滤器包括具有多个针齿的梳部。当流经排水路的排水在排水过滤器内通过针齿的周边时，排水中所含的异物会通过缠在针齿上而被捕获。
专利文献1所记载的排水过滤器以线屑、头发等长条的异物为捕获对象，因此梳部中相邻的针齿的间隙即过滤孔较大，因此排水过滤器不易堵塞。另一方面，最近渐渐要求使被称为微塑料的数十μm大小的树脂制的异物不会排放至自然界的应对措施。为了应对这样的要求，缩小过滤孔即可，但当过滤孔变小时，排水过滤器会变得容易堵塞，因此使用者不得不频繁地对排水过滤器进行维护，非常麻烦。
现有技术文献
专利文献
专利文献1：日本特开2020－103718号公报
发明内容
发明所要解决的问题
本发明是在该背景下完成的发明，其目的在于提供一种能抑制过滤器的堵塞来谋求维护性的提高的过滤装置和包括该过滤装置的洗衣机。
用于解决问题的方案
本发明是一种过滤装置，包括：壳体，设有流入口和流出口，所述壳体使洗衣机的排水路内的水从所述流入口流入至所述壳体内，使所述壳体内的水从所述流出口流出；过滤器，配置于所述壳体内，设有圆筒状的内周面部和多个过滤孔，所述内周面部具有纵向延伸的中心轴线，所述多个过滤孔分布于所述内周面部，所述过滤器具有将从所述流入口流入至所述壳体内的水取入至所述过滤器内的取入口，所述过滤器在所述内周面部捕获从所述取入口取入至所述过滤器内后从所述过滤孔向所述过滤器外流出的水中所含的异物；旋转体，配置于所述过滤器内，通过从所述取入口取入至所述过滤器内的水的水势而绕所述中心轴线旋转；刮取构件，在所述过滤器内由所述旋转体支承，从所述内周面部刮取异物，所述刮取构件能在接近所述内周面部的前进位置与向所述中心轴线侧远离所述内周面部的退避位置之间，在以所述中心轴线为基准的径向上滑动；以及施力构件，向所述退避位置对所述刮取构件施力。
此外，本发明的特征在于，所述旋转体包括：叶片，承接从所述取入口取入至所述过滤器内的水，所述叶片配置于所述过滤器的内部空间的比下半部分靠上侧的位置，所述取入口从绕所述中心轴线的周向或者相对于所述周向的切线方向面向所述叶片。
此外，本发明的特征在于，所述过滤装置包括：坠，与所述刮取构件连结。
此外，本发明的特征在于，在所述过滤器中的比所述过滤孔靠上侧的区域设有使所述过滤器内的水溢出至所述过滤器外的溢水孔，在所述壳体内设有以远离所述溢水孔的方式凹陷的凹部，所述流出口配置于所述溢水孔的正下方。
此外，本发明是一种洗衣机，包括：洗涤桶，收容洗涤物；排水路，具有与所述洗涤桶连接的上游路以及从所述上游路分支的第一下游路和第二下游路；排水阀，对所述第一下游路进行开闭；泵，设于所述第二下游路，使所述上游路内的水流至所述第二下游路；以及所述过滤装置，设于所述第二下游路中的比所述泵远离所述上游路的下游区域。
发明效果
根据本发明，在过滤装置中，流经洗衣机的排水路内的水在从流入口流入至壳体内并从取入口取入至过滤器内后，从过滤器的内周面部的过滤孔流出至 过滤器外并从壳体的流出口排出至洗衣机的机外。当水从过滤孔流出至过滤器外时，该水中所含的异物在过滤器的内周面部被捕获。当配置于过滤器内的旋转体通过从取入口取入至过滤器内的水的水势而旋转时，由旋转体支承的刮取构件通过离心力来抵消施力构件的施加力，从退避位置前进至前进位置而与过滤器的内周面部的异物接触。于是，旋转体的旋转速度暂时降低，由此离心力变小，因此刮取构件通过施力构件的施加力而向退避位置侧退避。然后，当旋转体的旋转速度恢复而离心力变大时，刮取构件再次前进至前进位置而与过滤器的内周面部的异物接触。如此，在与排水相伴的旋转体的旋转过程中，刮取构件反复在前进位置与退避位置之间进退来与过滤器的内周面部的异物多次接触，由此能高效地从过滤器的内周面部刮取异物。由此，能抑制过滤孔中的过滤器的堵塞来谋求维护性的提高。
此外，根据本发明，旋转体中包括的叶片承接从取入口取入至过滤器内的水，由此旋转体旋转。叶片配置于过滤器的内部空间中的比易积水的下半部分靠上侧的位置。而且，取入口从绕过滤器的内周面部的中心轴线即旋转体的旋转轴线的周向或者相对于该周向的切线方向面向叶片。由此，叶片一方面不易受到蓄于过滤器的内部空间的下半部分的水的阻力，另一方面高效地承接从取入口取入至过滤器内的水，因此能使旋转体强劲地旋转。因此，通过产生较大的离心力，刮取构件容易前进至前进位置，因此刮取构件能更高效地从过滤器的内周面部刮取异物。由此，能进一步抑制过滤孔中的过滤器的堵塞来谋求维护性的进一步提高。
此外，根据本发明，与刮取构件连结的坠会产生较大的离心力，由此刮取构件容易前进至前进位置，因此刮取构件能更高效地从过滤器的内周面部刮取异物。由此，能进一步抑制过滤孔中的过滤器的堵塞来谋求维护性的进一步提高。
此外，根据本发明，即使过滤器堵塞，过滤器内的水也会从溢水孔溢出至过滤器外并从流出口流出至壳体外，因此能将流经洗衣机的排水路内的水顺利地排出至机外。而且，壳体内设有以远离溢水孔的方式凹陷的凹部，流出口配置于溢水孔的正下方，因此能将从溢水孔溢出至过滤器外的水迅速地从凹部转移至流出口并排出至机外。
此外，根据本发明，在洗衣机的排水路中，比与洗涤桶连接的上游路靠下游侧的部分被分支为第一下游路和第二下游路。在第二下游路设有泵和过滤装置。当泵在排水阀关闭了第一下游路的状态下工作时，上游路内的水会在流经第二下游路内并由过滤装置捕获了异物后被排出至机外。当洗涤桶内的水变少而泵变得容易吞入空气时，使泵停止并通过排水阀来打开第一下游路即可。于是，残留的水从上游路流经第一下游路内并排出至机外，因此既能抑制因泵在吞入空气的状态下工作而产生噪音，又能将洗涤桶内的水无残留地排出至机外。
附图说明
图1是本发明的一实施方式的洗衣机的示意性纵剖右视图。
图2是洗衣机中所包括的过滤装置的立体图。
图3是过滤装置中所包括的壳体的立体图。
图4是过滤装置中所包括的过滤单元的立体图。
图5是过滤单元中所包括的过滤器的立体图。
图6是从与图5不同的方向观察到的过滤器的立体图。
图7是过滤单元中所包括的清洁单元的立体图。
图8是过滤装置的纵剖视图。
图9是图8的A－A向视剖视图。
图10是图8的B－B向视剖视图。
图11是在与图8不同的位置剖切时的过滤装置的纵剖视图。
图12是在与图9相同的剖切位置表示清洁单元的刮取构件位于前进位置的状态的剖视图。
附图标记说明
1：洗衣机；5：洗涤桶；12：排水路；12A：上游路；12B：第一下游路；12C：第二下游路；12CB：下游区域；13：排水阀；20：过滤装置；21：壳体；21G：流出口；21I：流入口；21L：凹部；23：过滤器；23A：内周面部；25C： 内部空间；25F：取入口；25H：溢水孔；26A：过滤孔；32：旋转体；33：刮取构件；34：坠；40E：叶片；49：施力构件；K：中心轴线；P：泵；Q：洗涤物；R：径向；S：周向；T：切线方向；Z1：上侧。
具体实施方式
以下，参照附图对本发明的实施方式进行具体说明。图1是本发明的一实施方式的洗衣机1的示意性纵剖右视图。将图1中与纸面正交的方向称为洗衣机1的左右方向X，将图1中的左右方向称为洗衣机1的前后方向Y，将图1中的上下方向称为洗衣机1的上下方向Z。左右方向X当中，将图1的纸面的里侧称为左侧X1，将图1的纸面的表侧称为右侧X2。前后方向Y当中，将图1的左侧称为前侧Y1，将图1的右侧称为后侧Y2。上下方向Z当中，将上侧称为上侧Z1，将下侧称为下侧Z2。
洗衣机1包括立式洗衣机、滚筒洗衣机、双桶洗衣机，但以下以省略了烘干功能而仅执行洗涤运转的立式洗衣机为例来对洗衣机1进行说明。洗衣机1包括：箱体2，构成该洗衣机1的轮廓；洗涤桶5，由配置于箱体2内的外桶3和内桶4构成；旋转翼6，收容于内桶4内；电动马达7，产生使内桶4、旋转翼6旋转的转矩；以及传递机构8，切换由马达7产生的转矩的传递目标。
箱体2例如为金属制，形成为箱状。在箱体2的上表面2A形成有使箱体2的内外连通的开口2B。在上表面2A设有对开口2B进行开闭的门9。在上表面2A中的例如比开口2B靠前侧Y1的区域设有由触摸面板等构成的显示操作部10。显示操作部也可以配置为分成液晶面板等显示部和开关、按钮等操作部。
外桶3形成为在上端形成有开口3A的有底圆筒状。外桶3经由吊杆11与箱体2连接，由此洗涤桶5被弹性支承。开口3A配置于箱体2的开口2B的正下方。外桶3内可蓄水。洗衣机1包括用于将蓄于外桶3内的水排出至机外即洗衣机1外的排水路12。排水路12具有从下侧Z2与外桶3连接的上游路12A以及从上游路12A分支的第一下游路12B和第二下游路12C。
第一下游路12B被拉出至机外。第二下游路12C在箱体2内与第一下游路12B汇合。与第二下游路12C相关的结构随后进行说明。在第一下游路12B的 中途设有排水阀13，该排水阀13为了开始或停止外桶3的水的排出即排水而被开闭。当排水阀13打开时，第一下游路12B开放，因此排水开始(参照图1的实线箭头)。当排水阀13关闭时，第一下游路12B封闭，因此排水停止。
内桶4具有沿上下方向Z延伸的中心轴J，形成为比外桶3小一圈的有底圆筒状，能在内部收容洗涤物Q。在内桶4的上端形成有出入口4A。出入口4A处于从下侧Z2与外桶3的开口3A和箱体2的开口2B连通的状态。洗衣机1的使用者打开门9来使开口2B、开口3A以及出入口4A开放，将洗涤物Q取出放入于内桶4。
内桶4同轴地收容于外桶3内，沿着上下方向Z配置，即纵向配置。收容于外桶3内的状态的内桶4能绕中心轴J旋转。在内桶4形成有多个未图示的贯通孔，外桶3内的水能经由该贯通孔在外桶3与内桶4之间往返。在内桶4的底壁设有沿着中心轴J向下侧Z2延伸并贯通外桶3的底壁的管状的支承轴14。
旋转翼6是所谓的波轮，形成为以中心轴J为圆心的圆盘状，配置于内桶4的底壁上。在旋转翼6设有从其圆心沿着中心轴J向下侧Z2延伸的旋转轴15。旋转轴15插通于支承轴14的中空部分，旋转轴15的下端部位于比外桶3的底壁靠下侧Z2。
马达7具有向上侧Z1突出并以中心轴J为中心旋转的输出轴16，配置于内桶4的下侧Z2。传递机构8是夹在支承轴14和旋转轴15各自的下端部与输出轴16的上端部之间的电动离合器。传递机构8将马达7从输出轴16输出的转矩选择性地传递给支承轴14和旋转轴15中的一方或双方。当转矩传递至支承轴14时，内桶4旋转，当转矩传递至旋转轴15时，旋转翼6旋转。
与对外桶3和内桶4的供水相关联地，洗衣机1包括用于将来自水龙头(未图示)的自来水供给至内桶4内的供水路17。供水路17的一端(未图示)被拉出至箱体2外并与水龙头连接。供水路17的另一端作为配置于箱体2内的供水口17A而从上侧Z1面向内桶4的出入口4A。在供水路17中的配置于箱体2内的部分设有可开闭的供水阀18。
洗衣机1包括由微型计算机等构成的控制部19。马达7、传递机构8、显示操作部10、排水阀13以及供水阀18分别与控制部19电连接。使用者对显示操 作部10的操作内容输入至控制部19，控制部19控制显示操作部10的显示内容。控制部19通过控制马达7、传递机构8、排水阀13以及供水阀18的动作来执行对洗涤桶5内的洗涤物Q进行洗涤的洗涤运转。洗涤运转包括：清洗过程，对洗涤桶5的内桶4内的洗涤物Q进行清洗；漂洗过程，在清洗过程之后对洗涤物Q进行漂洗；以及脱水过程，在漂洗过程后对洗涤物Q进行脱水。
在清洗过程中，首先，控制部19通过在关闭排水阀13的状态下打开供水阀18规定时间来向洗涤桶5内供水(参照图1的虚线箭头)。需要说明的是，在供水时，控制部19也可以不打开供水阀18，而是通过使洗澡水泵(未图示)工作来将洗澡水供给至洗涤桶5内。在供水前或供水后的定时，使用者也可以打开门9来将洗涤剂从出入口4A投入至内桶4内。
当洗涤桶5内的水位上升至规定水位时，控制部19在停止供水后通过控制马达7和传递机构8来使旋转翼6旋转。由此，内桶4内的洗涤物Q通过被搅拌或者由洗涤剂分解污垢而被清洗。最后，作为排水处理的一环，控制部19通过打开排水阀13来对洗涤桶5进行排水。
在漂洗过程中，首先，控制部19通过在关闭排水阀13的状态下打开供水阀18规定时间来向洗涤桶5内蓄留自来水。结束了供水的控制部19通过控制马达7和传递机构8来使旋转翼6旋转。由此，内桶4内的洗涤物Q被漂洗。在漂洗过程中，在供水前或供水后的定时，使用者也可以打开门9来将柔顺剂从出入口4A投入至内桶4内。柔顺剂会浸透洗涤物Q。最后，控制部19执行排水处理。
在脱水过程中，控制部19通过在打开排水阀13的状态下控制马达7和传递机构8来使内桶4以规定的脱水转速旋转。由此，内桶4内的洗涤物Q通过离心力起作用而被脱水。
接着，对与排水路12的第二下游路12C相关的结构进行说明。第二下游路12C具有：上游区域12CA，与上游路12A的分支位置连接；以及下游区域12CB，比上游区域12CA远离该分支位置。上游区域12CA在从该分支位置例如向后侧Y2延伸后向上侧Z1弯曲，在箱体2内的比外桶3靠后侧Y2的空间2C中沿着外桶3的周壁向上侧Z1延伸。下游区域12CB在空间2C中例如配置于比上游区域12CA靠后侧Y2，向下侧Z2延伸并与第一下游路12B汇合。
洗衣机1包括：电动泵P，设于上游区域12CA；以及过滤装置20，设于下游区域12CB。过滤装置20捕获在排水路12中从上游路12A流向第二下游路12C的水中所含的异物。作为过滤装置20的捕获对象的异物为头发、线屑、尘埃。需要说明的是，尘埃中也包括微塑料等微小的垃圾。需要说明的是，排水路12的第一下游路12B中限制水的流动的结构不设于排水阀13以外。
以下，使用洗衣机1的左右方向X、前后方向Y以及上下方向Z来确定过滤装置20的朝向，但过滤装置20的横向即左右方向X和前后方向Y的朝向可以任意变更。过滤装置20配置于箱体2内的空间2C的上端部。图2是从前侧Y1观察时的过滤装置20的立体图。过滤装置20包括：箱状的壳体21，构成该过滤装置20的外壳；以及过滤单元22，其大部分收容于壳体21内。
图3是从前侧Y1观察时的壳体21的立体图。壳体21一体地具有：半圆形的底壁21A，向后侧Y2鼓出；垂直壁21B，从底壁21A中的沿左右方向X延伸的前缘立起；以及弯曲壁21C，从底壁21A中的圆弧状的边缘立起并架设于垂直壁21B的左端与右端之间。被垂直壁21B和弯曲壁21C包围且被底壁21A堵住的空间为壳体21的内部空间21D。内部空间21D通过被垂直壁21B和弯曲壁21C的上缘包边的半圆形的开口21E而向上侧Z1开放。
在底壁21A的前端部中的靠右的位置设有向下侧Z2突出的圆管状的流出路21F。流出路21F的内部空间是从下侧Z2与内部空间21D连通的流出口21G。在垂直壁21B的前表面的左端部中的靠上的位置设有向前侧Y1突出的圆管状的流入路21H。流入路21H的内部空间是从前侧Y1与内部空间21D连通的流入口21I。在垂直壁21B的前表面的上端部设有沿左右方向X延伸的肋状的第一卡合部21J。在弯曲壁21C中的从后侧Y2面向内部空间21D的内周面的上端部，设有一边弯曲一边沿左右方向X延伸的肋状的第二卡合部21K。
图4是从前侧Y1观察时的过滤单元22的立体图。过滤单元22包括过滤器23和清洁单元24。参照作为过滤器23的立体图的图5和图6，过滤器23具有筒状，具体而言为圆筒状的整体形状，具有圆筒状的内周面部23A，该圆筒状的内周面部23A具有沿纵向即上下方向Z延伸的中心轴线K。需要说明的是，过滤器23的外周面23B既可以是与内周面部23A同样的圆筒状，也可以是方筒状。
过滤器23包括：圆筒状的框架25，构成该过滤器23的外壳；以及网片26，装配于框架25(参照图6)。需要说明的是，图5中省略了网片26的图示。此外，以下将以中心轴线K为基准的径向称为径向R，将绕中心轴线K的周向称为周向S。径向R当中，将接近中心轴线K的方向称为径向内侧R1，将远离中心轴线K的方向称为径向外侧R2。
框架25一体地具有：圆板状的底壁25A；以及圆筒状的圆周壁25B，从底壁25A的外周缘的整个区域立起。被圆周壁25B包围且被底壁25A堵住的空间为框架25的内部空间25C。内部空间25C也是过滤器23的内部空间。内部空间25C通过被圆周壁25B的上缘包边的圆形的开口25D而向上侧Z1开放。在上下方向Z上的圆周壁25B的大致中央处设有沿着相对于周向S的切线方向T向前侧Y1突出的圆管状的中继路25E。中继路25E的内部空间为从切线方向T与内部空间25C连通的取入口25F。
在底壁25A和圆周壁25B分别形成有多个贯通孔25G。以沿周向S等间隔地排列的方式设有八个形成于底壁25A的贯通孔25G，各个贯通孔25G形成为随着趋向径向外侧R2而在周向S上扩大的等腰梯形。形成于圆周壁25B的多个贯通孔25G配置为分布于圆周壁25B中的避开中继路25E的区域，各个贯通孔25G形成为四角被倒圆的矩形。
贯通孔25G在圆周壁25B的大致前半部分的区域以上下排列三层的方式配置，在圆周壁25B的大致后半部分的区域以上下排列两层的方式配置。以遍及圆周壁25B的下端部的周向S的整个区域等间隔地排列的方式设有八个最下层的贯通孔25G。圆周壁25B的大致后半部分的区域中的最上层的贯通孔25G以与最下层的贯通孔25G相同的大小设有四个，在周向S上等间隔地排列。圆周壁25B的大致前半部分的区域中的上数第二层的贯通孔25G的上下方向Z的尺寸大约为最下层的贯通孔25G的一半，该第二层的贯通孔25G设有三个并配置于与中继路25E相同的高度位置，在周向S上等间隔地排列。圆周壁25B的大致前半部分的区域中的最上层的贯通孔25G作为在上下方向Z和周向S上均最小的溢水孔25H设有四个，在周向S上等间隔地排列。圆周壁25B的大致后半部分的区域中的最上层的贯通孔25G的上端配置于与溢水孔25H的上下方向Z的大致中央相同的高度位置。
在底壁25A的下表面中的避开贯通孔25G的位置、圆周壁25B的外周面中的避开中继路25E和贯通孔25G的位置，设有对框架25进行加强的肋25I。肋25I在底壁25A的下表面沿周向S、径向R延伸(参照图6)，在圆周壁25B的外周面沿上下方向Z、周向S延伸。在圆周壁25B的上端部设有遍及周向S的大致整个区域地向径向外侧R2突出的凸缘25J。在凸缘25J中的沿周向S等间隔地隔开的多个位置，设有在上下方向Z上对凸缘25J切口而成的缺口25K。
如图6所示，网片26设于除圆周壁25B的最上层的溢水孔25H之外的所有贯通孔25G，堵住各个贯通孔25G而构成过滤器23的内周面部23A(参照图5)。各网片26配置为沿着周向S弯曲即可。在各网片26形成有无数个作为微小的贯通孔的过滤孔26A。因此，在过滤器23的内周面部23A分布有多个过滤孔26A。并且，溢水孔25H设于过滤器23中的比所有过滤孔26A靠上侧Z1的区域。需要说明的是，也可以代替网片26而设置一体成型于框架25的栅格(未图示)，在该情况下，栅格内的间隙作为过滤孔26A发挥作用。过滤孔26A的大小可以任意设定，但在将微塑料设为捕获对象的情况下，设定为10μm～20μm，在不将微塑料设为捕获对象的情况下，设定为500μm左右。
图7是从前侧Y1观察时的清洁单元24的立体图。清洁单元24包括：盖30；轴31，从盖30向下侧Z2延伸；旋转体32，以可旋转的方式由轴31支承；一对刮取构件33，由旋转体32支承；以及坠34，与各刮取构件33连结。
盖30为形状和大小与壳体21的底壁21A(参照图3)大致相同的半圆形。在盖30中的沿左右方向X延伸的前缘设有呈左右方向X上长的框状且从该前缘下垂的第三卡合部30A。
在盖30的下表面设有对盖30的外周缘包边并且向下侧Z2突出的环状的外侧肋30B。外侧肋30B具有比盖30的外周缘小一圈的半圆形的轮廓。在外侧肋30B中的向后侧Y2鼓出的圆弧状的边缘，设有在向下侧Z2突出后向后侧Y2折弯的爪状的第四卡合部30C。在外侧肋30B的外周面装配有对该外周面进行包边的密封件35。在盖30的下表面中的由外侧肋30B包围的区域，设有向下侧Z2突出的圆环状的内侧肋30D。内侧肋30D的下端配置于比外侧肋30B的下端高的位置即上侧Z1。在盖30的下表面中的与内侧肋30D的圆心一致的位置，设有向下侧Z2突出的圆筒状的支承部30E。
图8是过滤装置20的纵剖视图。过滤器23配置于壳体21内，盖30装配为从上侧Z1堵住壳体21的开口21E和过滤器23的框架25的开口25D。壳体21的第一卡合部21J卡合于盖30的第三卡合部30A，壳体21的第二卡合部21K卡合于盖30的第四卡合部30C，由此盖30以不会意外脱离的方式被固定(参照图11)。
盖30的下表面中，外侧肋30B被夹在壳体21的垂直壁21B和弯曲壁21C各自的上端部与过滤器23的框架25的圆周壁25B的上端部之间，圆周壁25B的上端部被夹在外侧肋30B与内侧肋30D之间(也参照图11)。在该状态下，内侧肋30D和过滤器23同轴配置，因此设于盖30的下表面的支承部30E配置于过滤器23的内周面部23A的中心轴线K上。在过滤器23的框架25的底壁25A中的与中心轴线K一致的位置设有向上侧Z1突出的圆筒状的支承部25L。
壳体21与外侧肋30B的间隙被密封件35堵住。此外，在外侧肋30B的内周面设有向径向内侧R1突出的爪状的定位部30F(参照图11)。定位部30F从下侧Z2与框架25的上端部的凸缘25J接触，由此壳体21内的过滤器23以框架25的底壁25A从壳体21的底壁21A稍微悬空的状态被定位。需要说明的是，使用者只要使过滤器23相对于盖30在周向S上错开来使定位部30F与凸缘25J的缺口25K(参照图5)对齐，然后使过滤器23从盖30向下侧Z2移动，就能对清洁单元24进行分解而只拆下过滤器23。以下，以盖30装配于壳体21和过滤器23的状态为基准，使用周向S、径向R来对轴31、旋转体32、刮取构件33以及坠34进行说明。
轴31例如是金属制的轴，在过滤器23内即过滤器23的框架25的内部空间25C中配置于中心轴线K上。轴31中，上端部插通于盖30的支承部30E内，下端部插通于过滤器23的框架25的支承部25L内。需要说明的是，为了防止轴31脱离，在轴31的上端部以夹住支承部30E的方式装配有上下一对垫圈36。其他垫圈37配置于支承部25L上。
旋转体32配置于过滤器23内。旋转体32可分割为上单元40和下单元41。图9是图8的A－A向视剖视图。上单元40一体地具有：圆板状的基座40A，与中心轴线K同轴配置；上圆筒部40B，从基座40A的上表面的圆心向上侧Z1突出；以及一对上引导部40C，以夹住上圆筒部40B的方式配置于基座40A的 上表面。而且，上单元40一体地具有：下圆筒部40D，从基座40A的下表面的圆心向下侧Z2突出；以及多个叶片40E，以包围下圆筒部40D的方式配置于基座40A的下表面(参照图8)。
在基座40A的外周缘中的在周向S上相距180度的两处，各形成有一个向径向内侧R1凹陷的凹陷40F。一对上引导部40C逐个配置于在周向S上与各凹陷40F相同的位置，由此配置于沿径向R延伸的同一直线上。各上引导部40C是从上圆筒部40B延伸至凹陷40F的径向R上细长的中空体。也可以将上圆筒部40B视为各上引导部40C中的径向内侧R1的端部。在各上引导部40C设有：内侧空间40G，位于径向内侧R1；外侧空间40H，位于比内侧空间40G靠径向外侧R2；分隔壁40I，配置于内侧空间40G与外侧空间40H之间；以及端壁40J，位于比外侧空间40H靠径向外侧R2。
内侧空间40G和外侧空间40H经由设于分隔壁40I的贯通孔40K相互连通。外侧空间40H经由设于端壁40J的贯通孔40L向径向外侧R2开放。内侧空间40G和外侧空间40H向上侧Z1开放。上单元40还包括与一对上引导部40C相应地设置的一对上罩42。上罩42在径向R上长，上罩42中的周向S的两端部向下侧Z2折弯。上罩42装配于对应的上引导部40C，从周向S的两侧夹住该上引导部40C，并且从上侧Z1堵住作为该上引导部40C内部空间的内侧空间40G和外侧空间40H(也参照图8)。由此，防止异物进入内侧空间40G和外侧空间40H。需要说明的是，上罩42可以通过螺钉固定、卡扣等公知的卡定构造来装卸于上引导部40C。
上圆筒部40B的内部空间和下圆筒部40D的内部空间处于连续的状态而构成上插通孔40M(参照图8)。上插通孔40M中插通有轴31。由此，旋转体32的整体能绕中心轴线K旋转。上圆筒部40B的内径比下圆筒部40D的内径小，与轴31的外径大致相同，因此旋转体32特别是旋转体32的大致上半部分能不晃动地流畅地旋转。需要说明的是，也可以在上插通孔40M的内周面与轴31之间配置轴承(未图示)。在下圆筒部40D设有在径向R上贯通下圆筒部40D的卡定孔40N(参照图7和图8)。在本实施例中，两个卡定孔40N逐个设于在周向S上相距180度的两处。
叶片40E从周向S观察为呈大致矩形的板状，配置为向径向外侧R2远离下 圆筒部40D，与基座40A的外周缘连接(参照图7)。叶片40E的下端部中的径向R的两端的角被倒圆。在本实施例中，八片叶片40E以在周向S上等间隔排列的方式配置。需要说明的是，各叶片40E配置于在周向S上与基座40A的凹陷40F和上引导部40C不同的位置。此外，各叶片40E配置于过滤器23的框架25的内部空间25C的比下半部分靠上侧Z1的位置(参照图8)。
如图9所示，过滤器23的框架25的溢水孔25H在俯视时配置于壳体21的垂直壁21B与弯曲壁21C的连接部分的周边。该连接部分构成俯视时的壳体21的角，因此将以远离溢水孔25H的方式凹陷的凹部21L形成于壳体21内。存在左右一对凹部21L，构成壳体21的内部空间21D特别是过滤器23与壳体21之间的间隙21M的一部分。需要说明的是，壳体21中的在周向S上偏离溢水孔25H的部分沿着弯曲壁21C配置，因此该部分的间隙21M在径向R上比凹部21L窄。此外，右端的溢水孔25H在俯视时与壳体21的底壁21A的流出口21G重叠，因此流出口21G配置于该溢水孔25H的正下方，即位于该溢水孔25H的下侧Z2且在周向S上与该溢水孔25H一致的位置。
图10是图8的B－B向视剖视图。过滤器23的框架25的取入口25F配置于与过滤器23内的叶片40E相同的高度位置，从周向S，严格来说从相对于周向S的切线方向T面向叶片40E。也就是说，取入口25F从周向S或者切线方向T面向叶片40E。此外，壳体21的流入口21I以沿着切线方向T与取入口25F并排的方式配置，处于与取入口25F连通的状态。
图11是沿着在周向S上与图8错开180度的其他位置剖切时的过滤装置20的纵剖视图。下单元41一体地具有：圆筒部41A，配置于上单元40的上圆筒部40B的正下方；卡定部41B，从圆筒部41A的上端向上侧Z1延伸；以及一对下引导部41C，配置为夹住圆筒部41A。
圆筒部41A的内部空间构成下插通孔41D。下插通孔41D中插通有轴31。下插通孔41D的内径与轴31的外径大致相同，因此旋转体32特别是旋转体32的下半部分能不晃动地流畅地旋转。需要说明的是，也可以在下插通孔41D的内周面与轴31之间配置轴承(未图示)。
卡定部41B以不与轴31接触的状态从下侧Z2插通于上圆筒部40B的内部空间即上插通孔40M。在卡定部41B的上端部设有向径向外侧R2彼此相反地 突出的一对爪部41E，该一对爪部41E逐个卡定于下圆筒部40D的卡定孔40N(参照图7和图8)。由此，下单元41以能够与上单元40一体旋转的方式连结于上单元40。需要说明的是，在卡定部41B设有定位部41F，该定位部41F通过从下侧Z2与下圆筒部40D接触而将下单元41相对于上单元40在上下方向Z上定位。
一对下引导部41C配置于沿径向R延伸的同一直线上。各下引导部41C是从圆筒部41A向径向外侧R2细长地延伸的中空体。也可以将圆筒部41A视为各下引导部41C中的径向内侧R1的端部。各下引导部41C与上单元40的上引导部40C同样地构成。也就是说，一对下引导部41C配置于在周向S上与一对上引导部40C相同的位置。而且，在各下引导部41C设有：内侧空间41G，位于径向内侧R1；外侧空间41H，位于比内侧空间41G靠径向外侧R2；分隔壁41I，配置于内侧空间41G与外侧空间41H之间；以及端壁41J，位于比外侧空间41H靠径向外侧R2。
内侧空间41G和外侧空间41H经由设于分隔壁41I的贯通孔41K相互连通。外侧空间41H经由设于端壁41J的贯通孔41L向径向外侧R2开放。内侧空间41G和外侧空间41H向下侧Z2开放。下单元41还包括与下引导部41C相应地设置的一对下罩43。下罩43在径向R上长，下罩43中的周向S的两端部向上侧Z1折弯。下罩43装配于对应的下引导部41C，从周向S的两侧夹住该下引导部41C，并且从下侧Z2堵住作为该下引导部41C的内部空间的内侧空间41G和外侧空间41H(参照图8)。由此，防止异物进入内侧空间41G和外侧空间41H。需要说明的是，下罩43可以通过螺钉固定、卡扣等公知的卡定构造来装卸于下引导部41C。
如上所述，与一对上引导部40C和下引导部41C相应地存在一对刮取构件33。刮取构件33逐个配置于在周向S上相距180度的两处。需要说明的是，刮取构件33的个数可以任意变更，因此既可以是单数，也可以设置三个以上并在周向S上等间隔地配置。各刮取构件33包括：共计两个滑动销45，逐个配置于上引导部40C和下引导部41C各自的内部空间中；座47，经由螺栓46固定于滑动销45；以及刷48，设于座47。
滑动销45为沿径向R延伸的圆筒状。参照图11中的左上方的滑动销45， 在滑动销45中的径向内侧R1的端部，设有从滑动销45的外周面突出一段的圆环状的内侧凸缘部45A。在滑动销45中的径向R的中途部即比内侧凸缘部45A靠径向外侧R2处，设有从滑动销45的外周面突出一段的圆环状的外侧凸缘部45B。在滑动销45形成有从径向外侧R2的端面延伸至外侧凸缘部45B的螺纹孔45C。
配置于上引导部40C的内部空间的滑动销45以跨于上引导部40C的内侧空间40G和外侧空间40H的方式配置。该滑动销45中，内侧凸缘部45A配置于内侧空间40G，外侧凸缘部45B配置于外侧空间40H。该滑动销45能在径向R上滑动。当滑动销45向径向外侧R2滑动时，滑动销45中的径向外侧R2的端部能从上引导部40C的端壁40J的贯通孔40L向径向外侧R2露出。需要说明的是，滑动销45的外侧凸缘部45B从径向内侧R1与端壁40J对置，因此能谋求滑动销45从上引导部40C的内部空间的防脱。
配置于下引导部41C的内部空间的滑动销45以跨于下引导部41C的内侧空间41G和外侧空间41H的方式配置。该滑动销45中，内侧凸缘部45A配置于内侧空间41G，外侧凸缘部45B配置于外侧空间41H。该滑动销45能在径向R上滑动。当滑动销45向径向外侧R2滑动时，滑动销45中的径向外侧R2的端部能从下引导部41C的端壁41J的贯通孔41L向径向外侧R2露出。需要说明的是，滑动销45的外侧凸缘部45B从径向内侧R1与端壁41J对置，因此能谋求滑动销45从下引导部41C的内部空间的防脱。
座47为上下方向Z上长且径向R上薄的箱状，其内部空间向径向外侧R2开放。因此，座47具有：底壁47A，沿上下方向Z延伸；上壁47B，从底壁47A的上端向径向外侧R2延伸；下壁47C，从底壁47A的下端向径向外侧R2延伸；以及一对侧壁47D，从周向S上的底壁47A的两端向径向外侧R2延伸(参照图7)。侧壁47D的上下方向Z的尺寸与过滤器23的框架25的内部空间25C的上下方向Z的尺寸大致相同。座47的底壁47A从径向外侧R2与在周向S上与该座47位于相同的位置的上引导部40C和下引导部41C对置配置。
刷48由毛构成，该毛被植入于座47的一对侧壁47D各自的径向外侧R2的端面，向径向外侧R2突出(也参照图7)。具体而言，由规定根数的毛构成的束48A以遍及各侧壁47D的径向外侧R2的端面的大致整个区域地在上下方向Z 上等间隔地隔开的方式设置。需要说明的是，例如也可以取代由毛构成的束48A而通过可弹性变形的突起来构成刷48。此外，也可以取代刷48而采用从侧壁47D向径向外侧R2突出的上下方向Z上长的刮片。
坠34是适配地收容于座47的内部空间的上下方向Z上长的金属制板。上述的螺栓46贯通坠34和座47的底壁47A而逐个安装于各滑动销45的螺纹孔45C，由此坠34和座47固定于上下两个滑动销45而完成各刮取构件33。各刮取构件33在过滤器23内经由滑动销45由旋转体32的上引导部40C和下引导部41C支承，能与滑动销45的滑动相应地在径向R上滑动。螺栓46的头部46A以不从坠34的径向外侧R2的端面露出的方式配置为埋入于坠34的内部。
清洁单元24还包括逐个配置于上引导部40C和下引导部41C各自的内部空间中的施力构件49。施力构件49是沿径向R延伸的螺旋弹簧。在上引导部40C中，施力构件49配置于外侧空间40H并包围滑动销45，通过在端壁40J与滑动销45的外侧凸缘部45B之间被压缩来始终向径向内侧R1对滑动销45施力。在下引导部41C中，施力构件49配置于外侧空间41H并包围在滑动销45，通过在端壁41J与滑动销45的外侧凸缘部45B之间被压缩来始终向径向内侧R1对滑动销45施力。
在图8～图11中，所有滑动销45处于最大限度地向径向内侧R1退避的状态。该状态下的各刮取构件33位于向中心轴线J侧即径向内侧R1远离过滤器23的内周面部23A的退避位置，在各刮取构件33中，座47配置于在基座40A中与该座47在周向S上位于相同位置的凹陷40F内(参照图9)，座47的底壁47A处于与上引导部40C的端壁40J和下引导部41C的端壁41J接触的状态。各刮取构件33始终被施力构件49向退避位置施力。
在上述的排水处理中，首先，控制部19在关闭排水阀13的状态下使泵P工作(参照图1)。于是，泵P使从洗涤桶5流下至排水路12的上游路12A内的水流向第二下游路12C。如图1的单点划线的箭头所示，流经第二下游路12C的水在第二下游路12C的上游区域12CA内上升，之后从过滤装置20的壳体21的流入口21I流入至壳体21内。
如图10的单点划线的箭头所示，从流入口21I流入至壳体21内的水以在中途几乎无遗漏的方式直行至过滤器23的取入口25F，由此从取入口25F被取入 至过滤器23内，从上述的切线方向T被淋向过滤器23的内的叶片40E。于是，具有承接了从取入口25F取入至过滤器23内的水的叶片40E的旋转体32的整体通过该水的水势而向周向S的一个方向旋转，在本实施例中向俯视时的顺时针方向旋转。
此外，从取入口25F取入至过滤器23内的水从过滤器23的内周面部23A的过滤孔26A流出至过滤器23外即壳体21内的过滤器23与壳体21的间隙21M。当水通过过滤孔26A时，该水中所含的异物被捕获而附着于内周面部23A。也就是说，过滤器23在内周面部23A捕获从过滤孔26A向过滤器23外流出的水中所含的异物。需要说明的是，也可以是，从过滤器23内流出的水不仅向径向外侧R2通过内周面部23A的网片26，还向下侧Z2通过框架25的底壁25A的网片26。
流出至过滤器23外的水从壳体21的底壁21A的流出口21G向壳体21外流出并在第二下游路12C的下游区域12CB内流下，与第一下游路12B汇合并被排出至洗衣机1的机外(参照图1的双点划线的箭头)。需要说明的是，在流入至过滤器23内的水的量超过向过滤器23外流出的水的量的情况下，过滤器23内的水会从设于框架25的上端部的溢水孔25H(参照图8)溢出至过滤器23外并从流出口21G流出至壳体21外。
目前为止位于退避位置的各刮取构件33通过由旋转体32的旋转产生的离心力来抵消施力构件49的施加力，向径向外侧R2滑动，如图12所示，配置于接近过滤器23的内周面部23A的前进位置。在位于前进位置的各刮取构件33中，刷48一边作为旋转体32的一部分旋转，一边与过滤器23的内周面部23A的异物接触，由此从过滤器23的内周面部23A刮取异物。当刷48与内周面部23A的异物接触时，旋转体32的旋转速度暂时降低，由此离心力变小，因此各刮取构件33通过施力构件49的施加力而向退避位置侧退避。如此，各刮取构件33能在退避位置与前进位置之间沿径向R滑动。
然后，当旋转体32的旋转速度恢复而离心力变大时，各刮取构件33再次前进至前进位置而与过滤器23的内周面部23A的异物接触。如此，在与排水相伴的旋转体32的旋转过程中，刮取构件33反复在前进位置与退避位置之间进退来与过滤器23的内周面部23A的异物多次接触，由此能高效地从过滤器23 的内周面部23A刮取异物。由此，能抑制过滤孔26A中的过滤器23的堵塞来谋求维护性的提高。也就是说，即使是微塑料、微纤维等微小的异物，该过滤装置20也能一边剥离附着于内周面部23A的异物一边长时间地持续进行异物的捕获，因此能捕获较多的异物。特别是，在刮取构件33始终位于前进位置的情况下，旋转体32的旋转恐怕会因刮取构件33卡在内周面部23A等而突然停止，但在本实施方式中，通过以可进退的方式构成刮取构件33，能持续进行旋转体32的顺利旋转。
通过承接从取入口25F取入至过滤器23内的水来使旋转体32旋转的叶片40E配置于过滤器23的内部空间25C中的比易积水的下半部分靠上侧Z1(参照图11)。而且，取入口25F从周向S或切线方向T面向叶片40E(参照图10)。由此，叶片40E一方面不易受到蓄于过滤器23的内部空间25C的下半部分的水的阻力，另一方面高效地承接从取入口25F取入至过滤器23内的水，因此能使旋转体32强劲地旋转。因此，通过产生较大的离心力，刮取构件33容易前进至前进位置，因此刮取构件33能更高效地从过滤器23的内周面部23A刮取异物。由此，能进一步抑制过滤孔26A中的过滤器23的堵塞来谋求维护性的进一步提高。
此外，与刮取构件33连结的坠34会产生较大的离心力，由此刮取构件33容易前进至前进位置，因此刮取构件33能更高效地从过滤器23的内周面部23A刮取异物。由此，能进一步抑制过滤孔26A中的过滤器23的堵塞来谋求维护性的进一步提高。
此外，即使过滤器23堵塞，过滤器23内的水也会从溢水孔25H溢出至过滤器23外并从流出口21G流出至壳体21外，因此能将流经洗衣机1的排水路12内的水顺利地排出至机外。而且，壳体21内设有以远离溢水孔25H的方式凹陷的凹部21L，流出口21G配置于溢水孔25H的正下方(参照图9)，因此能将从溢水孔25H溢出至过滤器23外的水迅速地从凹部21L转移至流出口21G并排出至机外。
如此，当泵P在排水阀13关闭了第一下游路12B的状态下工作时，上游路12A内的水会在流经第二下游路12C内并由过滤装置20捕获了异物后被排出至机外。当洗涤桶5内的水变少而泵P变得容易吞入空气时，控制部19使泵P停 止并通过排水阀13来打开第一下游路12B。于是，在过滤装置20中，水不再流入，因此各刮取构件33返回至退避位置。也就是说，退避位置是各刮取构件33的等待位置。
当第一下游路12B打开时，洗涤桶5内的残留的水会从上游路12A流经第一下游路12B内并排出至机外，因此既能抑制因泵P在吞入空气的状态下工作而产生的噪音，又能无残留地排出洗涤桶5内的水。需要说明的是，控制部19基于对洗涤桶5内的水位进行检测的水位传感器(未图示)的检测值、由计时器(未图示)测量的经过时间来判断洗涤桶5内的水已变少。
在过滤装置20中从过滤器23的内周面部23A剥离下来的异物会从底壁25A侧蓄于过滤器23的框架25的内部空间25C。在过滤装置20中，至少过滤单元22的盖30从洗衣机1的箱体2的上表面2A露出(参照图1)。因此，使用者在维护上能将壳体21的第一卡合部21J和第二卡合部21K分别从盖30的第三卡合部30A和第四卡合部30C取下来将过滤单元22从洗衣机1拆下，如上所述地进行分解，去除过滤器23内的异物。如上所述，过滤装置20能长时间地持续进行异物的捕获，因此使用者可以不用每天对过滤器23进行维护。需要说明的是，使用者能按照相反的顺序来组装过滤单元22并将其放回洗衣机1中。
本发明不限于以上说明的实施方式，可以在技术方案所记载的范围内进行各种变更。
例如，也可以是，省略排水路12中的第一下游路12B，还省略排水阀13。在该情况下，排水路12的下游路仅为第二下游路12C，第二下游路12C的下游区域12CB被拉出至洗衣机1的机外。此外，第一下游路12B和第二下游路12C也可以不汇合而分别被拉出至洗衣机1的机外。

Claims (5)

  1. 一种过滤装置，其特征在于，包括：
    壳体，设有流入口和流出口，所述壳体使洗衣机的排水路内的水从所述流入口流入至所述壳体内，使所述壳体内的水从所述流出口流出；
    过滤器，配置于所述壳体内，设有圆筒状的内周面部和多个过滤孔，所述内周面部具有纵向延伸的中心轴线，所述多个过滤孔分布于所述内周面部，所述过滤器具有将从所述流入口流入至所述壳体内的水取入至所述过滤器内的取入口，所述过滤器在所述内周面部捕获从所述取入口取入至所述过滤器内后从所述过滤孔向所述过滤器外流出的水中所含的异物；
    旋转体，配置于所述过滤器内，通过从所述取入口取入至所述过滤器内的水的水势而绕所述中心轴线旋转；
    刮取构件，在所述过滤器内由所述旋转体支承，从所述内周面部刮取异物，所述刮取构件能在接近所述内周面部的前进位置与向所述中心轴线侧远离所述内周面部的退避位置之间，在以所述中心轴线为基准的径向上滑动；以及
    施力构件，向所述退避位置对所述刮取构件施力。
  2. 根据权利要求1所述的过滤装置，其特征在于，
    所述旋转体包括：叶片，承接从所述取入口取入至所述过滤器内的水，所述叶片配置于所述过滤器的内部空间的比下半部分靠上侧的位置，
    所述取入口从绕所述中心轴线的周向或者相对于所述周向的切线方向面向所述叶片。
  3. 根据权利要求1或2所述的过滤装置，其特征在于，包括：
    坠，与所述刮取构件连结。
  4. 根据权利要求1至3中任一项所述的过滤装置，其特征在于，
    在所述过滤器中的比所述过滤孔靠上侧的区域设有使所述过滤器内的水溢出至所述过滤器外的溢水孔，
    在所述壳体内设有以远离所述溢水孔的方式凹陷的凹部，
    所述流出口配置于所述溢水孔的正下方。
  5. 一种洗衣机，其特征在于，包括：
    洗涤桶，收容洗涤物；
    排水路，具有与所述洗涤桶连接的上游路以及从所述上游路分支的第一下游路和第二下游路；
    排水阀，对所述第一下游路进行开闭；
    泵，设于所述第二下游路，使所述上游路内的水流至所述第二下游路；以及
    如权利要求1至4中任一项所述的过滤装置，设于所述第二下游路中的比所述泵远离所述上游路的下游区域。
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GB992138A (en) * 1961-07-24 1965-05-19 Ucb Sa Improvements in or relating to filters
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