WO2022134565A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2022134565A1
WO2022134565A1 PCT/CN2021/108311 CN2021108311W WO2022134565A1 WO 2022134565 A1 WO2022134565 A1 WO 2022134565A1 CN 2021108311 W CN2021108311 W CN 2021108311W WO 2022134565 A1 WO2022134565 A1 WO 2022134565A1
Authority
WO
WIPO (PCT)
Prior art keywords
water supply
washing tub
valve
drain
supply valve
Prior art date
Application number
PCT/CN2021/108311
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
田岛登
川端睦美
泽崎佳菜
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 CN202180086713.2A priority Critical patent/CN116648536A/zh
Publication of WO2022134565A1 publication Critical patent/WO2022134565A1/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
    • 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
    • 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
    • D06F25/00—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 and having further drying means, e.g. using hot air 
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/54—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements

Definitions

  • the present invention relates to a washing machine.
  • the all-in-one washing and drying machine described in the following Patent Document 1 includes: an outer tub capable of storing water; a drum arranged in the outer tub and accommodating laundry; a water supply path connecting a faucet to the outer tub; and a water supply valve provided in the water supply path ; A drainage channel, connected with the lower end of the outer tube, to discharge the water in the outer tube to the outside of the machine; and a drainage valve, arranged in the middle of the drainage channel.
  • the outer tub and the drum constitute a washing tub.
  • a general washing machine is provided with a detergent box for accommodating detergent, and a water supply passage is connected to the outer tub so as to pass through the detergent box.
  • the water supply valve is opened while the drain valve is closed, whereby the water flowing through the water supply passage from the faucet carries the detergent in the detergent box and is supplied to the outer tub through the washing tub. bottom of.
  • a drain portion is formed at the bottom of the outer cylinder, and a drain path connected to a drain port is connected to the drain portion.
  • the detergent in the detergent box is supplied to the outer tub through the washing tub together with the water supplied from the faucet when the water supply starts.
  • the water supplied first flows from the drain portion to the drain passage and reaches the drain valve. Therefore, it is expected that most of the detergent supplied to the outer tub will flow down to the drainage path.
  • the detergent in the outer cylinder is dissolved in water by the rotation of the drum.
  • the mechanical force generated by the rotating drum does not affect the detergent flowing down to the drainage channel, the detergent is not easily dissolved in water, and there is a possibility that the dissolved residue of the detergent is generated.
  • the concentration of the detergent in the water in the outer cylinder is low, and therefore, the cleaning effect of the laundry by the detergent is reduced during the cleaning operation. If a circulation path, a pump, etc. are added for returning the detergent flowing down the drain path to the outer cylinder, the dissolved residue of the detergent flowing down the drain path can be eliminated, but an increase in cost cannot be avoided.
  • Patent Document 1 Japanese Patent Laid-Open No. 2020-168231
  • the present invention was made based on this background, and an object of the present invention is to provide a washing machine that can prevent the detergent supplied to the washing tub from flowing down to the drain at low cost.
  • the present invention is a washing machine, comprising: a washing tub, which accommodates laundry and can store water; a detergent box, which accommodates detergent; a main water supply circuit, which is connected to the washing tub by passing through the detergent box; a water supply circuit, which is connected to the washing tub without passing through the detergent box; a main water supply valve, which opens and closes the main water supply circuit; an auxiliary water supply valve, which opens and closes the auxiliary water supply circuit; a channel connected to the washing tub; a drain valve to open and close the drainage channel; and a control unit to control the opening and closing of the main water supply valve, the auxiliary water supply valve, and the drain valve to perform a cleaning operation In the water supply process of an area between the drain valve and the washing tub is filled with water; and a second process of supplying the wash to the wash by opening the main water supply valve with the drain valve closed after the first process Tank storage.
  • the washing machine further includes: a circulation path having a take-out port and a return port connected to the washing tub; into the circulation path and return to the washing tub from the return port to circulate the air; a heating unit, provided in the circulation path, heats the air in the circulation path; and drying the filter is arranged in the circulation path in an upstream region on the side of the extraction port relative to the heating unit, and captures foreign matter from the air flowing from the extraction port to the return port in the circulation path, and the control The unit controls the air blowing unit and the heating unit to perform a drying operation, and a part of the auxiliary water supply passage also serves as the upstream area.
  • control unit opens both the main water supply valve and the sub water supply valve in the second process.
  • the drain valve and the washing tub in the drain passage are opened by opening the sub water supply valve while the main water supply valve and the drain valve are closed.
  • the area in between is filled with water from the secondary water supply.
  • the main water supply valve with the drain valve closed by opening the main water supply valve with the drain valve closed, the water flowing through the main water supply passage and the detergent in the detergent box is stored in the washing tub. Since the area between the drain valve and the washing tub in the drain passage is filled with water, the detergent supplied to the washing tub by the second treatment does not flow down to the drain passage, but stays in the washing tub.
  • the low-cost structure in which the detergent and water are supplied into the washing tub by the second process after filling the area between the drain valve and the washing tub in the drain passage with water by the first process can suppress the supply of detergent and water.
  • the detergent in the washing tub flows down to the drain without fully dissolving.
  • the concentration of the detergent in the water in the washing tub can be suppressed from decreasing, the laundry can be effectively washed with the detergent water having a high detergent concentration during the washing operation.
  • the air in the washing tub is circulated so as to be taken out from the extraction port into the circulation path and returned to the washing tub from the return port, and the air is circulated in the circulation path.
  • the heating part is heated to become hot air, and the laundry in the washing tub is dried.
  • the drying filter provided in the upstream area of the extraction port side than the heating unit in the circulation path captures the foreign matter contained in the air going from the extraction port to the return port in the circulation path. Therefore, the foreign matter in the air can be suppressed from adhering to the heating part.
  • a part of the sub-water supply path also serves as the upstream area of the circulation path. Therefore, the water flowing through the auxiliary water supply passage is splashed on the drying filter to peel off foreign matter from the drying filter, and flows into the washing tub with the foreign matter from the extraction port, and then flows out to the drain passage. In this way, the water used for peeling off the foreign matter from the drying filter can be diverted to fill the area between the drain valve and the washing tub in the drain path in the first process. Therefore, the detergent supplied to the washing tub can be suppressed from flowing down to the drain path at a lower cost.
  • both the main water supply valve and the sub water supply valve are opened, so that the water level in the washing tub can be rapidly raised.
  • FIG. 1 is a schematic vertical cross-sectional right side view of a washing machine according to an embodiment of the present invention.
  • Fig. 2 is a block diagram showing an electrical configuration of the washing machine.
  • FIG 3 is a schematic longitudinal cross-sectional front view of a washing tub and a peripheral structure in the washing machine.
  • Fig. 4 is a schematic longitudinal sectional front view of the washing tub and the surrounding structure.
  • Fig. 5 is a schematic longitudinal sectional front view of the washing tub and its surrounding structure.
  • Fig. 6 is a time chart showing a water supply process in a washing operation of the washing machine.
  • washing machine washing tub
  • 4 detergent box
  • 5 main water supply circuit
  • 6 drain circuit
  • 6A upstream area
  • 12 main water supply valve
  • 13 drain valve
  • 20 circulation circuit
  • 20D take outlet
  • 20E return port
  • 20F upstream area
  • 21 air supply part
  • 22 heating part
  • 23 drying filter
  • 24 auxiliary water supply circuit
  • 25 auxiliary water supply valve
  • 30 control part
  • L washing thing.
  • FIG. 1 is a schematic vertical cross-sectional right side view of a washing machine 1 according to an embodiment of the present invention.
  • the direction perpendicular to the paper surface of FIG. 1 is referred to as the left-right direction X of the washing machine 1
  • the left-right direction in FIG. 1 is referred to as the front-rear direction Y of the washing machine 1
  • the vertical direction in FIG. 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 front-rear direction Y the left side in FIG.
  • the left-right direction X and the front-rear direction Y are included in the lateral direction.
  • the horizontal direction may be the horizontal direction H, or may be a substantially horizontal direction slightly inclined with respect to the horizontal direction H. As shown in FIG.
  • the washing machine 1 a drum-type all-in-one washer-dryer is mainly targeted, but the washing machine 1 may be a vertical washing machine, a double-tub washing machine, or a drying function may be omitted and only a washing operation may be performed. washing machine.
  • the washing machine 1 includes: a casing 2 ; a washing tub 3 and a detergent box 4 , which are arranged in the casing 2 ;
  • the washing machine 1 further includes: a drum 7 accommodated in the washing tub 3 to accommodate laundry L; a motor 8 to rotate the drum 7 ; and a drying unit 9 to dry the laundry L in the drum 7 .
  • the case 2 is formed in a box shape.
  • the front surface 2A of the case 2 is, for example, a vertical surface.
  • An opening 2B that communicates the inside and the outside of the case 2 is formed on the front surface 2A.
  • a door 10 that opens and closes the opening 2B is provided on the front surface 2A.
  • the washing tub 3 is connected to the upper end of the damper 11 extending upward Z1 from the bottom wall 2C of the casing 2 .
  • the washing tub 3 has: a cylindrical peripheral wall 3A centered on an axis J extending in the front-rear direction Y along the horizontal direction H; ; and an annular front wall 3C connected to the front end edge of the peripheral wall 3A.
  • the rear wall 3B is arranged vertically, and has an outer peripheral portion 3D and a central portion 3E protruding one step toward the rear side Y2 from the outer peripheral portion 3D.
  • a through hole 3F that penetrates the center portion 3E in the front-rear direction Y along the axis J is formed in the center of the center portion 3E.
  • the front wall 3C has an annular first portion 3G protruding from the front end edge of the peripheral wall 3A toward the axis J side, and a cylindrical second portion 3H protruding from the inner peripheral edge of the first portion 3G to the front side Y1; And the annular third portion 3I protrudes toward the axis J side from the front end edge of the second portion 3H.
  • a port 3J that communicates with the hollow portion of the peripheral wall 3A from the front side Y1 is formed inside the third portion 3I.
  • the inlet and outlet 3J are in a state of being opposed to and communicating with the opening 2B of the housing 2 from the rear side Y2.
  • the detergent box 4 is a hollow body that accommodates detergent, and is arranged in a region on the upper side Z1 of the washing tub 3 in the case 2 . At least a part of the detergent box 4 is exposed from the front surface 2A or the upper surface 2D of the case 2 .
  • the exposed portion of the detergent box 4 exposed from the front surface 2A or the upper surface 2D may be an openable and closable cover or a drawer. The user can open or pull out the exposed portion to replenish detergent in the detergent box 4 .
  • the main water supply channel 5 has one end (not shown) connected to a faucet (not shown), the other end 5A connected to, for example, the upper part of the second portion 3H of the front wall 3C of the washing tub 3, and the one end and the other end 5A Halfway between 5B.
  • the intermediate portion 5B constitutes a part of the interior space of the detergent box 4 . That is, the main water supply path 5 is connected to the washing tub 3 so as to pass through the interior of the detergent box 4 .
  • tap water from the faucet is supplied into the washing tub 3 through the main water supply path 5 and the detergent box 4 . If there is no detergent in the detergent box 4 , tap water is stored in the washing tub 3 .
  • detergent water in which the detergent is dissolved is stored in the washing tub 3 in the tap water.
  • tap water and detergent water may be simply referred to as "water”.
  • the washing machine 1 includes an openable and closable main water supply valve 12, and is provided in the main water supply passage 5, for example, on the faucet side rather than the midway portion 5B.
  • the main water supply valve 12 in the open state is in an operating (ON) state in which the main water supply passage 5 is opened, allowing water supply.
  • the main water supply valve 12 in the closed state is in a non-operational (OFF) state in which the main water supply passage 5 is closed, and water supply is stopped.
  • the drainage passage 6 is connected to the lower end portion of the washing tub 3, for example, the lower end portion of the circumferential wall 3A.
  • the water in the washing tub 3 is discharged from the drain passage 6 to the outside of the casing 2, that is, outside the machine.
  • the washing machine 1 includes an openable and closable drain valve 13 provided in the middle of the drain path 6 .
  • the drain valve 13 in the open state is in an operating state in which the drain path 6 is opened, and the draining of the washing tub 3 is permitted.
  • the drain valve 13 in the closed state is in an inoperative state in which the drain passage 6 is closed, and the drain is stopped.
  • the area between the drain valve 13 of the drain passage 6 and the washing tub 3 is called an upstream area 6A, and the area farther from the washing tub 3 than the drain valve 13 is called a downstream area 6B.
  • the drum 7 is a cylindrical body having a center axis that coincides with the axis J, and is a circle smaller than the washing tub 3 .
  • the drum 7 is horizontally arrange
  • the drum 7 has: a cylindrical peripheral wall 7A arranged coaxially with the peripheral wall 3A of the washing tub 3; a disk-shaped back wall 7B, a hollow portion that blocks the peripheral wall 7A from the rear side Y2;
  • the annular wall 7C protrudes toward the axis J side from the front end edge of the peripheral wall 7A.
  • a plurality of through holes 7D are formed in the drum 7 at least in the circumferential wall 7A, and the water in the washing tub 3 flows between the washing tub 3 and the drum 7 through the through holes 7D. Therefore, the water level in the washing tub 3 matches the water level in the drum 7 .
  • a support shaft 14 extending to the rear side Y2 along the axis J is provided at the center of the rear wall 7B of the drum 7 . The rear end portion of the support shaft 14 passes through the through hole 3F of the rear wall 3B of the washing tub 3 and is arranged on the rear side Y2 from the rear wall 3B.
  • a port 7E that communicates with the hollow portion of the peripheral wall 7A from the front side Y1 is formed.
  • the inlet and outlet 7E are in a state of facing and communicating with the inlet and outlet 3J of the washing tub 3 and the opening 2B of the casing 2 from the rear side Y2.
  • the door 3J and the door 7E are opened and closed by the door 10 together with the opening 2B.
  • the user of the washing machine 1 takes the laundry L into and out of the drum 7 through the opened opening 2B, the inlet and outlet 3J, and the inlet and outlet 7E.
  • the door 10 is provided with a gasket 15 that is in close contact with the third portion 3I of the front wall 3C of the washing tub 3 when the door 10 closes the opening 2B, the entrance 3J, and the entrance 7E.
  • the motor 8 is arranged on the rear side Y2 of the rear wall 3B of the washing tub 3 in the casing 2 .
  • a direct drive (DD: Direct Drive) motor can be used as an example of the motor 8.
  • the motor 8 is connected to the support shaft 14 provided in the drum 7 .
  • the torque generated by the motor 8 is transmitted to the support shaft 14 , and the drum 7 rotates around the axis J along with the support shaft 14 .
  • a clutch mechanism (not shown) which transmits or cuts off the torque of the motor 8 to the support shaft 14 may be provided between the motor 8 and the support shaft 14 .
  • the drying unit 9 includes: a circulation path 20 and an air supply part 21 for circulating the air in the washing tub 3; a heating part 22 for heating the circulating air; and a drying filter 23 for capturing foreign matter contained in the circulating air ; Auxiliary water supply channel 24 , which supplies water for automatic cleaning to the drying filter 23 ; and an auxiliary water supply valve 25 , which opens and closes the auxiliary water supply channel 24 .
  • the circulation path 20 is a flow path arranged on the upper side Z1 of the washing tub 3 in the casing 2 .
  • the circulation path 20 has an intermediate portion 20A extending in the front-rear direction Y, a rear portion 20B extending from the rear end of the intermediate portion 20A to the lower side Z2, and a front portion 20C extending from the front end of the intermediate portion 20A to the lower side Z2.
  • a take-out port 20D is formed at the front end of the lower end portion of the rear portion 20B.
  • the extraction port 20D is connected to a portion of the outer peripheral portion 3D of the back wall 3B of the washing tub 3 that is higher than the upper limit water level, and communicates with the interior of the washing tub 3 from the rear side Y2.
  • a return port 20E is formed at the lower end of the front portion 20C.
  • the return port 20E is connected to the upper end of the second portion 3H of the front wall 3C of the washing tub 3, and communicates with the inside of the washing tub 3 from the upper side Z
  • the air blower 21 is a so-called blower, and includes a rotor blade 21A arranged in the circulation path 20 and a motor (not shown) that rotates the rotor blade 21A.
  • the rotating blade 21A rotates, the air in the washing tub 3, that is, the air in the washing tub 3 and the air in the drum 7, is taken out from the take-out port 20D into the circulation path 20 as indicated by the thick dotted arrow, and then returned from the return port 20E to the circulation path 20. in the washing tub 3.
  • the air in the washing tub 3 circulates so as to flow through the washing tub 3 and the circulation path 20 in sequence.
  • the heating unit 22 is a heat exchanger in a heat pump, a general heater, or the like, and at least a part thereof is provided in the circulation path 20 .
  • a portion of the heating portion 22 provided in the circulation path 20 has a heat dissipation portion 22A.
  • the heat dissipation part 22A becomes high temperature, so the air flowing through the circulation path 20 is heated and becomes hot air when passing around the heat dissipation part 22A.
  • the region in the circulation path 20 on the side of the extraction port 20D rather than the heat dissipation portion 22A is referred to as an upstream region 20F.
  • the rear end portion of the midway portion 20A and the rear portion 20B constitute the upstream region 20F.
  • the drying filter 23 is a mesh sheet or a grille, and is arranged so as to cross the upstream region 20F of the circulation path 20 in the longitudinal direction, for example.
  • the drying filter 23 When the air in the circulation path 20 from the take-out port 20D to the return port 20E passes through the drying filter 23 , the dust, dust and other foreign matter contained in the air will be captured by the drying filter 23 and remain in the drying filter 23 23A of the upstream surface on the side of the extraction port 20D in the middle.
  • the auxiliary water supply passage 24 includes an upstream portion 24A connected to a portion of the main water supply passage 5 that is closer to the faucet than the main water supply valve 12 , and a downstream portion 24B constituted by the upstream region 20F of the circulation passage 20 . That is, a part of the auxiliary water supply passage 24 also serves as the upstream area 20F. An end of the upstream portion 24A connected to the downstream portion 24B enters the drying filter 23 at the upstream region 20F from the upper side Z1. The upstream area 20F is connected to the washing tub 3 at the extraction port 20D as described above. Such an auxiliary water supply passage 24 is connected to the washing tub 3 so as not to pass through the interior of the detergent box 4 .
  • the auxiliary water supply valve 25 is provided in the upstream portion 24A of the auxiliary water supply passage 24 .
  • the sub-water supply valve 25 in the open state is in an operating state in which the sub-water supply passage 24 is opened, and allows water to be supplied to the washing tub 3 via the sub-water supply passage 24 .
  • the sub-water supply valve 25 in the closed state is in a non-operating state in which the sub-water supply passage 24 is closed, and the water supply to the washing tub 3 via the sub-water supply passage 24 is stopped.
  • the washing machine 1 further includes a control unit 30 .
  • FIG. 2 is a block diagram showing an electrical configuration of the washing machine 1 .
  • the control unit 30 is configured as, for example, a microcomputer including a CPU (Central Processing Unit), a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory), and a timer for timekeeping, and is built in the housing 2 .
  • the motor 8 , the main water supply valve 12 , the drain valve 13 , the blower unit 21 , the heating unit 22 , and the sub water supply valve 25 are each electrically connected to the control unit 30 , and the control unit 30 controls the operations of these components to execute the washing and drying operation.
  • the washing and drying operation includes a washing process in an initial stage, a rinsing process performed one or more times after the washing process, a dehydration process performed at least after the final rinsing process, and a drying process in the final stage.
  • Each of these processes may also be independent operations, in which case, for example, the cleaning process is a washing operation and the drying process is a drying operation.
  • the washing machine 1 further includes a water level sensor 31 that detects the water level in the washing tub 3 .
  • the water level sensor 31 a known sensor can be used. The detection value of the water level sensor 31 is input to the control part 30 in real time.
  • FIGS. 3 to 5 are schematic longitudinal cross-sectional front views of the washing tub 3 and its surrounding structure
  • FIG. 6 is a timing chart showing the water supply treatment during the cleaning operation. In the time chart of FIG.
  • the horizontal axis represents the elapsed time
  • the vertical axis represents the detected value of the water level sensor 31, that is, the water level in the washing tub 3, the operating/non-operating state of the main water supply valve 12, and the sub water supply valve in order from top to bottom. 25 on/off status and motor 8 status.
  • the states of the motor 8 include a state in which the motor 8 is stopped, a state in which the motor 8 is rotated forward, and a state in which the motor 8 is reversed. It should be noted that the drain valve 13 is always closed during the water supply treatment.
  • the control unit 30 sequentially opens the sub water supply valve 25 and the main water supply valve 12 with the drain valve 13 closed. Among them, if the main water supply valve 12 is opened first, as shown by the arrow A1 in FIG. 3 , the detergent in the detergent box 4 will be carried by the water flowing through the main water supply channel 5 and flow into the washing tub 3 and will not remain in the washing tub 3 into the cylinder 3 and flow down to the upstream area 6A of the drainage channel 6 . Therefore, the concentration of the detergent in the water in the washing tub 3 becomes low.
  • the control unit 30 opens the sub water supply valve 25 with the drain valve 13 and the main water supply valve 12 closed as the first first process (time T0 in FIG. 6 ). In this way, as shown by arrow A2 in FIG. 4 , the tap water from the auxiliary water supply passage 24 flows into the upstream area 6A of the drainage passage 6 through the inside of the washing tub 3 .
  • the sub-water supply valve 25 is opened for a predetermined time, the upstream area 6A is filled with tap water as shown by hatching in FIG. 4 .
  • the control unit 30 ends the first process and executes the second process (Time T1 in FIG. 6 ).
  • the time to end the first process may be the time when the water level sensor 31 detects that the water level in the washing tub 3 has risen to the water level W1, or may be the time when a predetermined time has elapsed from time T0 through experiments or the like.
  • the control unit 30 closes the sub-water supply valve 25 and opens the main water supply valve 12 while the drain valve 13 continues to be closed.
  • the detergent water that flows through the main water supply passage 5 and carries the detergent in the detergent box 4 flows into and is stored in the washing tub 3 as indicated by arrow A3 in FIG. 5 .
  • the water level in the washing tub 3 rises from the water level W1.
  • the upstream area 6A between the drain valve 13 in the drain passage 6 and the washing tub 3 is in a state of being filled with tap water, so the detergent supplied to the washing tub 3 by the subsequent second process does not flow down to the drain Road 6, and will stay in the washing tub 3.
  • the detergent and water are supplied into the washing tub 3 by the second treatment after filling the upstream region 6A of the drainage passage 6 with tap water in the first treatment, and the detergent supplied to the washing tub 3 can be suppressed. It flowed down to the drainage channel 6 without being completely dissolved. In this case, it is possible to realize a low-cost structure that does not use a pump or the like for returning the water in the drainage passage 6 to the washing tub 3 . Therefore, the detergent supplied to the washing tub 3 can be suppressed from flowing down to the drain passage 6 at low cost.
  • the control unit 30 closes the main water supply valve 12 and opens the sub water supply valve 25 to operate the motor 8 to repeat the forward rotation and reverse rotation of the motor 8 ( FIG. 6 ). time T2).
  • the drum 7 rotates forward as the motor 8 rotates forward, and the drum 7 reversely rotates as the motor 8 rotates reversely.
  • the penetration of the detergent water into the laundry L in the drum 7 is accelerated according to the forward and reverse rotation of the drum 7, so that the water level in the washing tub 3 is lowered.
  • the detergent since the detergent is actively dissolved in the tap water in the washing tub 3 by the forward and reverse rotation of the drum 7 , high-concentration detergent water is stored in the washing tub 3 .
  • the control unit 30 stops the motor 8 and opens the main water supply valve 12 with the auxiliary water supply valve 25 continuously opened (time T3 in FIG. 6 ). In this way, the control unit 30 opens both the main water supply valve 12 and the sub water supply valve 25 in the second process. Thereby, the water level in the washing tub 3 rises again. Since both the main water supply valve 12 and the auxiliary water supply valve 25 are opened, the water level in the washing tub 3 can be rapidly raised. It should be noted that when all the detergent in the detergent box 4 is drained, only tap water is supplied from the main water supply channel 5 to the washing tub 3 .
  • the control unit 30 closes the main water supply valve 12 and the auxiliary water supply valve 25, operates the motor 8, and repeats the forward rotation and reverse rotation of the motor 8 ( FIG. 6 ). time T4).
  • the water level in the washing tub 3 decreases.
  • the detergent water is in a state in which the detergent water has basically penetrated into the laundry L in the washing tub 3, so the water level in the washing tub 3 after the time T4 decrease slowly.
  • the control unit 30 temporarily stops the motor 8 with the main water supply valve 12 and the sub-water supply valve 25 continuously closed (time T5 in FIG. 6 ).
  • the control unit 30 opens the main water supply valve 12 while continuing to close the sub water supply valve 25 (time T6 in FIG. 6 ).
  • the control unit 30 closes the main water supply valve 12 and repeats the forward rotation and reverse rotation of the motor 8 (time T7 in FIG. 6 ).
  • the control unit 30 temporarily stops the motor 8 while the main water supply valve 12 and the sub water supply valve 25 are continuously closed (time T8 in FIG. 6 ).
  • additional water supply consisting of such opening of the main water supply valve 12, forward and reverse rotation of the motor 8, and temporary stop of the motor 8 is repeated a predetermined number of times (after time T9 in FIG.
  • the control unit 30 passes the The second process is ended by closing the main water supply valve 12 and the auxiliary water supply valve 25 . Thereby, the whole water supply process is complete
  • the control unit 30 rotates the drum 7 by the motor 8 as a cleaning process after the water supply process. Thereby, the laundry L in the drum 7 is beat-washed. In the thumping washing, tumbling in which the laundry L is lifted to a certain extent and then naturally falls to the water surface is repeated. The dirt is removed from the laundry L by the impact generated by the tumbling and the high-concentration detergent components contained in the detergent water stored in the drum 7 . Since the concentration of the detergent in the water in the washing tub 3 can be suppressed from decreasing as described above, the laundry L can be quickly and efficiently washed with the detergent water having a high detergent concentration in the cleaning process. When the control unit 30 opens the drain valve 13 to drain the water after a predetermined time has elapsed from the start of the tumbling, the cleaning process ends.
  • the control unit 30 opens the main water supply valve 12 for at least a predetermined time with the drain valve 13 closed to supply water to the washing tub 3, and then rotates the drum 7 by the motor 8. In this way, since the above-mentioned tumbling is repeated, the laundry L is rinsed with the tap water in the drum 7 .
  • the rinsing process ends when the control unit 30 drains the water after a predetermined time has elapsed since the start of tumbling.
  • the control unit 30 rotates the drum 7 for dehydration with the drain valve 13 open during the dehydration process.
  • the laundry L in the drum 7 is dehydrated by centrifugal force generated by the spin-drying rotation of the drum 7 .
  • the water that seeps out from the laundry L by dehydration is discharged out of the machine through the drainage channel 6 . It is possible that the dehydration process is carried out not only after the rinsing process but also after the washing process.
  • the control unit 30 generates hot air by controlling the air blowing unit 21 and the heating unit 22 during the drying process, circulates the hot air between the drum 7 and the circulation path 20 , and supplies the laundry L in the drum 7 . Thereby, the laundry L is dried.
  • the above-mentioned foreign matter will be generated during the washing operation, and the foreign matter will be carried by the hot air to flow during the drying process, and the foreign matter will be captured by the drying filter 23 in the circulation path 20 . This prevents foreign matter from adhering to and accumulating in the heat dissipation portion 22A of the heating portion 22 , thereby preventing performance degradation due to a decrease in the heating efficiency of the heating portion 22 and deterioration of the air flow in the circulation path 20 .
  • the control unit 30 opens the auxiliary water supply valve 25 as a maintenance operation for drying the filter 23 .
  • the main water supply valve 12 may be provided on the upstream side of the faucet in the main water supply channel 5 from the connection position with the auxiliary water supply channel 24.
  • the control unit 30 opens the main water supply valve 12 and the auxiliary water supply. Valve 25 on both sides.
  • the tap water from the faucet flows from the main water supply channel 5 into the sub water supply channel 24 .
  • the auxiliary water supply passage 24 may not be connected to the main water supply passage 5 but may be directly connected to the faucet.
  • the water flowing into the downstream portion 24B from the upstream portion 24A in the auxiliary water supply passage 24 is splashed from the upper side Z1 on the drying filter 23 disposed in the downstream portion 24B, that is, the upstream region 20F of the circulation passage 20 .
  • the foreign matter on the upstream surface 23A of the drying filter 23 is peeled off from the upstream surface 23A, falls, and is carried by the water to reach the extraction port 20D of the circulation path 20 .
  • the downstream portion 24B may be provided with a nozzle, a pump, or the like for strongly jetting the tap water from the upstream portion 24A to the drying filter 23 , or may be provided with rotating while being controlled by the control portion 30 .
  • a wiper or the like that scrapes off foreign matter on the upstream surface 23A.
  • a drainage filter (not shown) may be provided in the upstream portion of the drainage channel 6 closer to the washing tub 3 than the drainage valve 13 .
  • the foreign matter flowing through the drainage channel 6 is filtered by the drainage. It is captured by the filter and recycled by the user during maintenance of the drain filter.
  • a drain filter a well-known structure which can be attached and detached to the housing
  • the water flowing through the auxiliary water supply passage 24 is splashed on the drying filter 23 to peel off foreign matter from the drying filter 23 , and flows into the washing tub 3 with the foreign matter from the extraction port 20D, and then flows out into the drain passage 6 .
  • the self-cleaning water for peeling off foreign matter from the drying filter 23 can be diverted to fill the upstream area 6A between the drain valve 13 and the washing tub 3 in the drain path 6 . Therefore, the detergent supplied to the washing tub 3 can be suppressed from flowing down to the drain passage 6 at a lower cost.
  • the main water supply valve 12 and the auxiliary water supply valve 25 may be constituted by a general-purpose multi-port valve.
  • a plurality of sub-water supply passages 24 may exist respectively according to a plurality of uses such as automatic cleaning of the drying filter 23 .
  • the water flowing through the sub-water supply passage 24 is not limited to tap water, and may be bath water. The same applies to the water flowing through the main water supply passage 5 .
  • the detergent box 4 may contain not only detergent but also softener.
  • the detergent box 4 is configured so that the water of the main water supply line 5 selectively carries detergent and softener.
  • the softener is supplied into the washing tub 3 during the water supply treatment in the rinsing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
PCT/CN2021/108311 2020-12-25 2021-07-26 洗衣机 WO2022134565A1 (zh)

Priority Applications (1)

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JP2020216733A JP7506377B2 (ja) 2020-12-25 2020-12-25 洗濯機
JP2020-216733 2020-12-25

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000051565A (ja) * 1998-08-11 2000-02-22 Toshiba Corp 全自動洗濯機
US20090293204A1 (en) * 2008-05-30 2009-12-03 Samsung Electronics Co., Ltd. Washing machine and method of washing drum
CN102251378A (zh) * 2010-05-21 2011-11-23 株式会社东芝 洗衣机
CN103981676A (zh) * 2013-02-13 2014-08-13 Lg电子株式会社 洗涤装置的控制方法
CN104233695A (zh) * 2013-06-21 2014-12-24 株式会社东芝 洗衣机
TW201638424A (zh) * 2015-04-16 2016-11-01 Hitachi Appliances Inc 滾筒式洗衣機
CN108603325A (zh) * 2016-09-09 2018-09-28 东芝生活电器株式会社 洗衣机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019115379A (ja) 2017-12-26 2019-07-18 パナソニックＩｐマネジメント株式会社 ドラム式洗濯機
JP7320774B2 (ja) 2019-04-04 2023-08-04 青島海爾洗衣机有限公司 洗濯乾燥機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000051565A (ja) * 1998-08-11 2000-02-22 Toshiba Corp 全自動洗濯機
US20090293204A1 (en) * 2008-05-30 2009-12-03 Samsung Electronics Co., Ltd. Washing machine and method of washing drum
CN102251378A (zh) * 2010-05-21 2011-11-23 株式会社东芝 洗衣机
CN103981676A (zh) * 2013-02-13 2014-08-13 Lg电子株式会社 洗涤装置的控制方法
CN104233695A (zh) * 2013-06-21 2014-12-24 株式会社东芝 洗衣机
TW201638424A (zh) * 2015-04-16 2016-11-01 Hitachi Appliances Inc 滾筒式洗衣機
CN108603325A (zh) * 2016-09-09 2018-09-28 东芝生活电器株式会社 洗衣机

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