WO2017054761A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2017054761A1
WO2017054761A1 PCT/CN2016/100892 CN2016100892W WO2017054761A1 WO 2017054761 A1 WO2017054761 A1 WO 2017054761A1 CN 2016100892 W CN2016100892 W CN 2016100892W WO 2017054761 A1 WO2017054761 A1 WO 2017054761A1
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WO
WIPO (PCT)
Prior art keywords
water
washing
detergent
tub
laundry
Prior art date
Application number
PCT/CN2016/100892
Other languages
English (en)
French (fr)
Inventor
西浦直人
田中启之
川口智也
米田昌令
荒井英行
大西胜司
Original Assignee
青岛海尔洗衣机有限公司
海尔亚洲株式会社
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, 海尔亚洲株式会社 filed Critical 青岛海尔洗衣机有限公司
Priority to EP16850385.2A priority Critical patent/EP3358062A4/en
Priority to KR1020187012097A priority patent/KR20180050758A/ko
Priority to CN201680057121.7A priority patent/CN108138419B/zh
Priority to US15/761,036 priority patent/US20180282930A1/en
Publication of WO2017054761A1 publication Critical patent/WO2017054761A1/zh

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements

Definitions

  • the invention relates to a washing machine.
  • the drum type washing machine is provided with a water storage tank, and by transferring a part of the washing water to the water storage tank at the end of the beat washing process, the weight in the water tank is reduced, so that the vibration and noise in the water squeezing washing process can be reduced.
  • Patent Document 1 Japanese Patent Laid-Open No. Hei 8-299658
  • the present invention has been made in view of the background, and an object thereof is to provide a washing machine capable of cleaning a laundry in a washing tub by using rotation of a washing tub having a longitudinally extending axis and detergent water. Improvement.
  • the washing machine of the present invention comprises: an outer tub capable of storing water; and a washing tub having a through hole for allowing water to flow between the washing tub and the outer tub and a longitudinally extending axis to receive the laundry and to be accommodated therein a motor that rotates the washing tub; a water tank that is connected to the outer tub, receives detergent water mixed with detergent from the outer tub; and a circulation path that draws detergent from the water tank Water is injected into the washing tub from the upper side; a pump takes the detergent water in the water tank into the circulation path and raises it in the circulation path; and executes the unit, including performing dehydration cleaning a washing operation of the process, the circulation cleaning process is repeated, a soaking process, and a dehydration process, wherein the circulation process is to drive the water in the water tank to the washing tub and the circulation by driving the pump Circulating between the roads and pouring them into the washing tub; the soaking treatment stops the driving of the pump after the circulating treatment and saturates the washing water in the washing tub
  • the present invention is characterized in that the execution unit drives the motor to rotate the washing tub in at least one of the loop processes.
  • the present invention is characterized in that the water tank is formed with a vent hole, and the washing machine includes an exhaust pipe having an end portion connected to the vent hole and connected to the outer tub The other end of the upper part.
  • the present invention is characterized by comprising: a water supply path for supplying water to the washing tub; and a detergent accommodating portion connected to the water supply path and containing detergent, the water supply path having a discharge port and passing through The detergent accommodating portion and the water flowing through the water supply path are discharged toward a position shifted from the laundry in the washing tub.
  • the circulation path includes: a main flow path having a spouting port from the upper side to the washing tub; and a branch flow path branched from the main flow path and connected to the outer tub or The water tank, the washing machine including a reversing valve to switch a flow of detergent water in the circulation path to the Mainstream road or the branch flow path.
  • the present invention is characterized in that it includes a flow path connecting the outer tub and the water tank, and a valve that opens and closes the flow path, the execution unit closing the at least one of the soaking processes a valve that accumulates detergent water in the washing tub.
  • the washing machine contains laundry in a washing tub having a longitudinally extending axis.
  • the water passing through the through-hole of the washing tub between the outer tub and the washing tub accumulates on both the outer tub and the washing tub.
  • the water tank connected to the outer tub can receive the detergent water mixed with the detergent from the outer tub.
  • the detergent water in the water tank is taken into the washing tub from the upper side after being taken up by the pump and rising in the circulation path.
  • the execution unit performs a washing operation including a dehydration washing process which repeats the circulation treatment, the soaking treatment after the circulation treatment, and the dehydration treatment after the impregnation treatment.
  • a circulation process the execution unit drives the pump to circulate the detergent water in the water tank between the washing tub and the circulation path and to pour it into the laundry in the washing tub.
  • the execution unit stops the driving of the pump and saturates the detergent water in the washing tub and returns to the water tank.
  • the execution unit rotates the washing tub by driving the motor to dehydrate the laundry.
  • the detergent water in the water tank is sufficiently poured into the laundry in the washing tub, and in the soaking treatment after each circulation treatment, the laundry is treated and soaked by a sufficient amount of detergent water. The same state. Thereby, the dirt is efficiently floated from the entire laundry. Further, in the dehydration treatment after each impregnation treatment, the dirt is squeezed out of the laundry with the detergent water by the centrifugal force accompanying the rotation of the washing tub. In the soaking treatment before the dehydration treatment, the detergent water in the outer tub and in the washing tub is returned to the water tank. Therefore, in the dehydration treatment, since the washing tub can be smoothly rotated to the target maximum number of revolutions without being hindered by the detergent water, the laundry can be efficiently dehydrated by the high-speed rotation of the washing tub and the dirt can be removed from the laundry.
  • the execution unit drives the motor in at least one cycle process to rotate the washing tub.
  • the detergent water injected into the washing tub from the circulation path can be uniformly poured into the laundry in the washing tub over the entire area in the rotation direction of the washing tub. Therefore, the dehydration cleaning process can achieve the cleaning effect Further improvement.
  • the detergent water can smoothly flow into the water tank.
  • the other end of the exhaust pipe whose one end is connected to the exhaust hole is connected to the upper portion of the outer tub. Therefore, even if the air bubbles in the water tank enter the exhaust pipe, they are introduced into the outer tub, so that it is possible to suppress the occurrence of air bubbles clogging the exhaust pipe. Further, since the other end portion of the exhaust pipe is connected to the upper portion of the outer tub, it is disposed at a position higher than the upper limit water level in the outer tub. Therefore, it is possible to prevent water in the outer tub from overflowing into the exhaust pipe.
  • the discharge port of the water supply path discharges the water with the detergent passing through the detergent accommodating portion toward the position where the laundry in the washing tub is staggered.
  • the detergent water can be circulated between the washing tub and the circulation path by switching the flow of the detergent water in the circulation path to the main flow path.
  • the detergent water in the circulation path does not reach the washing tub but enters the outer tub or the water tank through the branch flow path.
  • the executing unit closes a valve that opens and closes the flow path that connects the outer tub and the water tank, and accumulates the detergent water in the washing tub.
  • Fig. 1 is a schematic view of a washing machine in accordance with an embodiment of the present invention.
  • Fig. 2 is a block diagram showing the electrical configuration of the washing machine.
  • Fig. 3 is a flow chart showing the control operation during the dehydration cleaning process.
  • FIG. 4 is a schematic view of a washing machine of a first modification.
  • Fig. 5 is a schematic view of a washing machine of a second modification.
  • Fig. 6 is a schematic view of a washing machine of a third modification.
  • washing machine 1: washing machine; 3: outer tub; 3F: upper; 4: washing tub; 4E: through hole; 5: motor; 6: water supply road; 6B: spout; 8: detergent receiving portion 9C: upper side flow path; 11: circulation road; 11B: spout; 11D: main road; 11E: branch flow path; 12: pump; 13: water tank; 13A: vent hole; 22: second drain valve; 23: exhaust pipe; 23A: One end; 23B: the other end; 30: control part; 35: reversing valve; J: axis; Q: washing; Z1: upper side.
  • FIG. 1 is a schematic view of a washing machine 1 according to an embodiment of the present invention.
  • the vertical direction in FIG. 1 is referred to as the vertical direction Z of the washing machine 1
  • the left-right direction in FIG. 1 is referred to as the horizontal direction Y of the washing machine 1.
  • the vertical direction Z coincides with the vertical direction
  • the horizontal direction Y coincides with the horizontal direction.
  • the upper side is referred to as the upper side Z1
  • the lower side is referred to as the lower side Z2.
  • the washing machine 1 also includes a washing and drying machine having a drying function, the washing machine 1 will be described below by taking a washing machine that performs only the washing operation as an example.
  • the washing machine 1 includes a casing 2 and an outer tub 3 disposed in the casing 2, a washing tub 4, a motor 5, a water supply path 6, a water supply valve 7, a detergent accommodating portion 8, a drain passage 9, a first drain valve 10, and a circulation Road 11, pump 12 and water tank 13.
  • the casing 2 is made of, for example, metal and formed in a box shape.
  • An entrance 2B that connects the inside and the outside of the casing 2 is formed on the upper surface 2A of the casing 2.
  • the upper surface 2A is provided with a door 14 that opens and closes the entrance and exit 2B, and a display operation unit 15 that is constituted by a switch, a liquid crystal panel, or the like.
  • the switch or the like of the display operation unit 15 By operating the switch or the like of the display operation unit 15, the user can turn on/off the power of the washing machine 1, or set the mode of the washing operation freely, or issue an instruction to start or stop the washing operation of the washing machine 1.
  • the information relating to the washing operation is visually displayed on the liquid crystal panel or the like of the display operation unit 15.
  • the outer tub 3 is made of, for example, a resin, and has a bottomed cylindrical shape, and is elastically supported by the casing 2 via an elastic supporting member (not shown) such as a so-called boom. Water can be stored in the outer tub 3. Virtual through the center of the outer tub 3 The straight line is the axis J of the outer tub 3. The axis J extends longitudinally in a direction that is slightly inclined with respect to the vertical direction or with respect to the vertical direction.
  • the bottomed cylindrical outer tub 3 has a substantially cylindrical circumferential wall 3A disposed along the axis J, a disk-shaped bottom wall 3B that blocks the hollow portion of the circumferential wall 3A from the lower side Z2, and a circumferential wall
  • the upper end edge of 3A is crimped and an annular annular wall 3C projecting toward the axis J side.
  • the outer tub 3 is formed with a circular inlet and outlet 3D surrounded by the annular wall 3C and opposed to the inlet and outlet 2B of the casing 2 from the lower side Z2, and a through hole penetrating the center portion of the bottom wall 3B in the vertical direction Z. 3E.
  • the washing tub 4 is a bottomed cylindrical metal drum formed to be smaller than the outer tub 3, and can accommodate the laundry Q therein.
  • the washing tub 4 is housed coaxially in the outer tub 3. Therefore, the axis of the washing tub 4 is the above-described axis J.
  • the bottomed cylindrical washing tub 4 has a substantially cylindrical circumferential wall 4A disposed along the axis J, a disk-shaped bottom wall 4B that blocks the hollow portion of the circumferential wall 4A from the lower side Z2, and a circumferential wall The upper end edge of 4A is crimped and an annular annular wall 4C projecting toward the axis J side.
  • the washing tub 4 is formed with a circular inlet/outlet 4D surrounded by the annular wall 4C and opposed to the inlet and outlet 3D of the outer tub 3 from the lower side Z2, and a plurality of through holes 4E penetrating the circumferential wall 4A and the bottom wall 4B.
  • the motor 5 is constituted by, for example, a variable frequency motor.
  • the motor 5 is disposed in the casing 2 on the lower side Z2 of the outer tub 3, and is fixed to the bottom wall 3B of the outer tub 3 via a fixing member (not shown) or the like.
  • the motor 5 has an output shaft 18 that rotates about an axis J.
  • the output shaft 18 is coupled to the rotating shaft 17 of the washing tub 4.
  • a transmission mechanism (not shown) including a clutch or the like may be interposed between the rotating shaft 17 and the output shaft 18.
  • a pulsator (not shown) for agitating the stored laundry Q is provided in the washing tub 4, and the driving force of the motor 5 can be selectively transmitted from the transmission mechanism to the washing tub 4 and the pulsator. Or both parties.
  • the number of revolutions of the motor 5 is the same as the number of revolutions of the washing tub 4 and the pulsator.
  • the water supply path 6 has an end portion 6A connected to a faucet (not shown) and a discharge port 6B formed therein.
  • the other end portion 6C of the water supply path 6 penetrates the annular wall 3C of the outer tub 3 from the upper side Z1, and the discharge port 6B faces the lateral direction between the circumferential wall 3A of the outer tub 3 and the circumferential wall 4A of the washing tub 4 from the upper side Z1.
  • the gap 19 on Y is arranged in a manner.
  • the water supply valve 7 is provided in the middle of the water supply path 6.
  • the water supply path 6 is opened when the water supply valve 7 is opened.
  • the water from the faucet flows through the water supply path 6 and flows down from the discharge port 6B to the gap 19 as indicated by the thick solid arrow, and is accumulated in the outer tub 3.
  • the discharge port 6B discharges the water flowing into the water supply path 6 toward the gap 19 between the outer tub 3 and the washing tub 4, that is, at a position shifted from the laundry Q in the washing tub 4.
  • the water accumulated in the outer tub 3 passes through the through hole 4E of the washing tub 4 and is also accumulated in the washing tub 4. In this manner, when the water supply valve 7 is opened, the washing tub 4 is supplied with water from the water supply path 6.
  • the water supply path 6 is closed when the water supply valve 7 is closed, the water supply can be stopped.
  • the detergent accommodating portion 8 is formed in a box shape in which detergent is stored, and is connected to the middle of the water supply path 6.
  • the internal space of the detergent accommodating portion 8 constitutes a midway portion of the water supply path 6.
  • the drain passage 9 has an end portion 9A that is connected to the bottom wall 3B of the outer tub 3 from the lower side Z2 at a position avoiding the through hole 3E, and is pulled out to the casing 2 at a position lower than the one end portion 9A.
  • the first drain valve 10 is provided in the middle of the drain path 9.
  • the drain path 9 is opened when the first drain valve 10 is opened. Thereby, the detergent water accumulated in the outer cylinder 3 and the washing tub 4 is discharged to the outside of the machine through the drain path 9. In this manner, when the first drain valve 10 is closed while the drain is being performed, the drain passage 9 is closed, so that the drain can be stopped.
  • the circulation path 11 is a flow path having one end portion 11A in which the drain passage 9 is connected between the one end portion 9A and the first drain valve 10, and the other end portion 11C in which the water discharge port 11B is formed.
  • the circulation path 11 is bent from the one end portion 11A in the lateral direction Y, and is bent, passes through the gap between the casing 2 and the outer tub 3, and extends toward the upper side Z1, and then is bent toward the axis J side to reach the other end portion 11C.
  • the other end portion 11C is bent to the lower side Z2 directly above the entrance 3D of the outer tub 3, and the spouting port 11B is opened at the lower end of the other end portion 11C, and faces the inside of the washing tub 4 from the upper side Z1 from the entrance 4D of the washing tub 4.
  • the pump 12 is a centrifugal pump or the like in which a rotating impeller (not shown) is incorporated, and is provided in the middle of the circulation path 11.
  • the water tank 13 is a hollow body having a capacity of, for example, about 30 L, and is disposed in the casing 2 in a space closer to the lower side Z2 than the outer tub 3.
  • a water tank 13 is interposed between the connection portion of the end portion 11A of the drain passage 11 connected to the circulation path 11 and the one end portion 9A.
  • the internal space of the water tank 13 constitutes a midway portion of the drainage path 9.
  • the upper side flow path 9C of the drain path 9 from the one end portion 9A to the water tank 13 is a flow path that communicates between the outer tub 3 and the water tank 13, and extends from the bottom wall 3B of the outer tub 3 to the lower side Z2 and is connected to the upper side Z1.
  • the top wall of the water tank 13. Thereby, the water tank 13 is connected to the outer tub 3 via the upper side flow path 9C.
  • the upper drain channel 9C is provided with a second drain valve 22 that opens and closes the upper channel 9C.
  • the lower end flow path 9D from the water tank 13 to the other end portion 9B of the drain passage 9 is connected to the bottom wall of the water tank 13 from the lower side Z2.
  • the first drain valve 10 described above is provided in the lower side flow path 9D.
  • the one end portion 11A of the circulation path 11 is connected to a portion between the first drain valve 10 and the water tank 13.
  • the water tank 13 may be fixed to the outer tub 3 or may be fixed to the lower portion of the cabinet 2 .
  • at least the upper side flow path 9C of the drainage path 9 has flexibility so that the vibration of the outer tub 3 is not transmitted to the water tank 13 during the washing operation.
  • the upper side flow path 9C extends from the bottom wall 3B of the outer tub 3 to the lower side Z2 and is connected to the top of the water tank 13 from the upper side Z1. The wall, therefore, the detergent water in the outer tub 3 smoothly flows into the water tank 13 by its own weight.
  • a vent hole 13A that communicates from the upper side Z1 into the water tank 13 is formed in the top wall of the water tank 13.
  • the washing machine 1 includes an exhaust pipe 23.
  • the exhaust pipe 23 has one end portion 23A connected to the exhaust hole 13A from the upper side Z1 and the other end portion 23B connected to the upper portion 3F of the outer tub 3 from the lateral direction Y, extending from the one end portion 23A toward the other end portion 23B to the upper side Z1.
  • the upper portion 3F refers to a portion of the circumferential wall 3A of the outer tub 3 that is closer to the upper side Z1 than the assumed upper limit water level in the outer tub 3.
  • the pump 12 is driven to suck the detergent water in the water tank 13 into the one end portion 11A of the circulation path 11 and to rise in the circulation path 11. Thereby, the detergent water is drawn from the inside of the water tank 13 into the circulation path 11, and is discharged from the water discharge port 11B of the other end portion 11C.
  • the detergent water discharged from the spouting port 11B flows down to the inlet and outlet 4D of the washing tub 4 as indicated by a thick broken line arrow, and is injected into the washing tub 4 from the upper side Z1.
  • the detergent water in the water tank 13 circulates between the washing tub 4 and the circulation path 11.
  • the pump 12 is disposed in the lowermost portion of the space closer to the lower side Z2 than the outer tub 3 in the casing 2, that is, at a position lower than the water tank 13, so that the detergent water in the water tank 13 can be ingested without any residue.
  • the washing machine 1 includes a control unit 30 as an execution unit.
  • the control unit 30 is, for example, a microcomputer including a CPU, a memory unit such as an RQM or a RAM, and is disposed in the casing 2.
  • Fig. 2 which is a block diagram showing the electrical configuration of the washing machine 1, the washing machine 1 further includes a water level sensor 31, a rotation sensor 32, and a timer 33 for timing.
  • the water level sensor 31, the rotation sensor 32, and the timer 33, and the motor 5, the pump 12, the display operation unit 15, the water supply valve 7, the first drain valve 10, and the second drain valve 22 are electrically connected to the control unit 30, respectively.
  • the water level sensor 31 is a sensor that detects the water level of the outer tub 3 and the washing tub 4, and the detection result of the water level sensor 31 is input to the control unit 30 in real time.
  • the rotation sensor 32 is a device that reads the number of revolutions of the motor 5, and is strictly a device that reads the number of revolutions of the output shaft 18 of the motor 5, for example, a Hall that outputs a pulse wave every time the output shaft 18 rotates by a predetermined rotation angle.
  • the IC (not shown) is composed. The number of revolutions read by the rotation sensor 32 is input to the control unit 30 in real time.
  • the control unit 30 controls the voltage applied to the motor 5 based on the number of revolutions input, and controls the duty ratio of the voltage applied to the motor 5 in detail, and drives the motor 5 to rotate at a desired number of revolutions.
  • the control unit 30 also controls the driving of the pump 12.
  • the control unit 30 receives the selection.
  • the control unit 30 displays the information necessary for the user in a visual manner on the display operation unit 15.
  • the control unit 30 controls opening and closing of each of the water supply valve 7, the first drain valve 10, and the second drain valve 22. Therefore, the control portion 30 can supply water to the outer tub 3 and the washing tub 4 by opening the water supply valve 7 in a state where at least the first drain valve 10 is closed, and can open the second drain valve by closing the first drain valve 10
  • water is stored in the water tank 13, and drainage of the outer tub 3, the washing tub 4, and the water tank 13 can be performed by opening the first drain valve 10 and the second drain valve 22.
  • the washing operation includes a washing process consisting of an initial dehydration washing process and a formal washing process after the dehydrating washing process, a rinsing process after the washing process, and a dehydrating process.
  • the dehydration cleaning process can be regarded as an independent process in the washing operation, or can be regarded as a part of the washing process as in the present embodiment.
  • the dehydration process includes: a final dehydration process performed at the end of the washing operation; and an intermediate dehydration process performed after the washing process and the rinsing process.
  • the control unit 30 detects the amount of the laundry Q in the washing tub 4 as the load amount before the start of the washing operation.
  • the unit of the load amount is, for example, kg.
  • the control unit 30 can obtain the load amount based on the weight of the laundry Q detected by the weight sensor (not shown) included in the washing machine 1. Further, the amount of load may be detected based on fluctuations in the number of revolutions of the motor 5 when the washing tub 4 is stably rotated at a low speed. Further, when the pulsator is provided, the control unit 30 stops the driving of the motor 5 immediately after rotating the pulsator carrying the laundry Q for a predetermined period of time, thereby causing the motor 5 to rotate inertially, and measuring the motor 5 at this time.
  • the amount of inertial rotation The larger the load, the smaller the amount of inertia rotation of the motor 5 connected to the pulsator carrying the heavier laundry Q.
  • the smaller the amount of load the larger the amount of inertia rotation of the motor 5 connected to the pulsator carrying the lighter laundry Q.
  • the control unit 30 detects the amount of load based on the magnitude of the number of revolutions.
  • the cycle soaking process will be described with reference to the flowchart of Fig. 3.
  • the first drain valve 10 is always in a closed state, and the second drain valve 22 is in principle always open.
  • the control unit 30 causes the water supply valve 7 to open only for a predetermined period of time to supply water (step S1).
  • the detergent water that has flowed out from the discharge port 6B of the water supply path 6 reaches the water tank 13 via the outer tub 3 and the upper side flow path 9C of the drain passage 9 and is stored in the water tank 13 .
  • the control unit 30 performs the first loop processing (step S2).
  • the control unit 30 drives the pump 12 to circulate the detergent water between the washing tub 4 and the circulation path 11, and at this time, the detergent water is poured from the spouting port 11B of the circulation path 11 to the washing tub. Washing Q within 4.
  • the processing time of the loop processing that is, the time for driving the pump 12 is, for example, about 15 seconds.
  • the amount of the detergent water poured to the laundry Q in the first circulation treatment is about three times the weight of the laundry Q. For example, in the case of the laundry Q of 8 kg, it is about 24 L, which is large.
  • the detergent water that has passed through the pump 12 in the circulation path 11 since the detergent is broken and refined by the impeller of the pump 12 and dissolved in the water, a high concentration of detergent water can be generated.
  • the control unit 30 performs the first soaking process (step S3).
  • the control unit 30 stops the driving of the pump 12 and causes the detergent water to permeate the laundry Q in the washing tub 4. Specifically, the detergent water poured from the upper side Z1 to the laundry Q during the circulation treatment permeates the laundry Q by its own weight. Further, in the impregnation treatment, since the second drain valve 22 continues to be in an open state, the detergent water that has not penetrated into the laundry Q flows out from the through hole 4E of the washing tub 4 to the outer tub 3, and from the upper side of the drain passage 9. The flow path 9C returns to the water tank 13.
  • step S4 the control unit 30 performs the first dehydration process (step S4).
  • the control unit 30 drives the motor 5 to rotate the washing tub 4.
  • the centrifugal force accompanying the rotation of the washing tub 4 acts on the laundry Q in the washing tub 4, the laundry Q is dehydrated.
  • the control unit 30 performs the second round processing (step S5), and thereafter performs the second soaking process (step S6), and thereafter performs the second dehydration process (step S7).
  • the detergent water extruded from the laundry Q by dehydration is returned to the water tank 13 via the outer tub 3 and the upper side flow path 9C of the drain passage 9. Further, as described above, the detergent water is also returned from the washing tub 4 to the water tank 13 in the soaking treatment before the dehydration treatment. Therefore, at the start of the circulation process after the dehydration process, the detergent water is in a state of being accumulated in a large amount in the water tank 13.
  • the circulation of the detergent water can be quickly started without the pump 12 being idling.
  • the treatment time is set to be long, but since the second cycle process, The laundry Q is in a state in which a certain amount of detergent water has been absorbed, so the treatment time is set to be shorter than the processing time of the first circulation treatment.
  • the processing time is set to be long in the first soaking process, but the processing time is set to be shorter than the processing time of the first soaking process from the second soaking process.
  • the control unit 30 repeats the circulation process (step S5), the permeation process (step S6), and the dehydration process (step S7) in this order until the dehydration process is performed a predetermined number of times (NO in step S8). ").
  • the predetermined number of times described above is 25 times. In this case, the loop processing and the soaking processing are repeated a total of 25 times.
  • the time elapsed from the start of the water supply in the step S1 is not used, but the number of times of the dehydration treatment is used, because the dehydration treatment has not waited for washing due to the bias of the laundry Q or the like.
  • the number of revolutions of the bucket 4 rises until the target maximum number of revolutions is interrupted.
  • the detergent water in the water tank 13 is sufficiently poured into the laundry Q in the washing tub 4, and in the soaking treatment after each circulation treatment, the laundry Q is treated by a sufficient amount of detergent water. It is in the same state as the immersion. Thereby, the dirt is efficiently floated from the entire laundry Q. Further, in the dehydration treatment after the respective permeation treatment, the dirt is pushed out from the laundry Q along with the detergent water by the centrifugal force accompanying the rotation of the washing tub 4. In the soaking treatment before the dehydration treatment, the detergent water in the outer tub 3 and in the washing tub 4 is returned to the water tank 13.
  • the washing tub 4 does not retract the detergent water in the outer tub 3, and therefore can smoothly rotate to the target maximum number of revolutions without being hindered by the bubbles generated by the detergent water or the detergent water. Further, the washing tub 4 in the dehydration treatment is lighter due to the removal of the detergent water, and thus the vibration accompanying the rotation of the washing tub 4 is lowered. Therefore, the laundry Q can be efficiently dehydrated by the high-speed rotation of the washing tub 4 and the dirt can be removed from the laundry Q.
  • the power consumption of the motor 5 can be saved. Further, by repeatedly using the detergent water in the water tank 13 by the multiple cycle processing, it is possible to secure a sufficient amount of detergent water even if new detergent water is not generated every time the dehydration treatment is performed, thereby saving the detergent. And water.
  • the water tank 13 which is a member separately provided with the outer tub 3 is provided in order to collect the detergent water, for example, the recess may be provided in the bottom wall 3B of the outer tub 3, and washing may be performed in the later stage of the soaking process. The detergent water in the tub 4 returns to the recess.
  • the structure for connecting the rotating shaft 17 of the washing tub 4 and the output shaft 18 of the motor can be easily formed around the bottom wall 3B as compared with the case where such a recess is provided.
  • step S8 When the dehydration treatment is performed a predetermined number of times (YES in step S8), the dehydration washing process is completed, and the control unit 30 performs the next washing process.
  • the control unit 30 closes the second drain valve 22 while continuing to close the first drain valve 10, and opens the water supply valve 7, thereby additionally supplying water to the washing tub 4.
  • the control unit 30 drives the pump 12 to transfer the detergent water of the water tank 13 to the washing tub 4 via the circulation path 11.
  • the detergent water is accumulated in the washing tub 4 to a water level higher than the water level of the detergent water accumulated by the water supply in step S1.
  • the amount of water supplied from the water supply path 6 can be suppressed to be small.
  • the control unit 30 drives the washing tub 4 in a state where detergent water is accumulated.
  • the motor 5 rotates the washing tub 4 or rotates the above-described pulsator.
  • a water flow of the detergent water is generated in the washing tub 4, and the laundry Q is stirred.
  • This water flow removes the dirt from the laundry Q by mechanical force such as friction or vibration applied to the laundry Q, or chemically decomposes the dirt by the detergent water, thereby performing the formal washing of the laundry Q.
  • the control unit 30 opens both the first drain valve 10 and the second drain valve 22, thereby performing the outer tub 3, the washing tub 4, and the water tank 13 Drainage of components. Therefore, in principle, the water tank 13 is empty every time the washing operation is completed.
  • the control unit 30 may perform the first process of driving the motor 5 to rotate the washing tub 4 at a low speed of a predetermined number of revolutions or less at least in one cycle.
  • the number of revolutions of the motor 5 when the washing tub 4 is rotated at a low speed is, for example, 50 rpm.
  • the number of revolutions of the motor 5 when the washing tub 4 is rotated in the spin-drying process of the dehydration washing process is, for example, 200 rpm to 800 rpm
  • the number of revolutions of the motor 5 when the washing tub 4 is rotated at a high speed during the dehydrating process is, for example, 600 rpm to 800 rpm. .
  • control unit 30 may perform a second process of repeatedly controlling the intermittent rotation of the washing tub 4 by controlling the driving of the motor 5 in at least one cycle process.
  • the intermittent rotation of the washing tub 4 means that the washing tub 4 is repeatedly stopped and rotated by repeatedly energizing and de-energizing the motor 5.
  • the detergent water returned from the circulation path 11 into the washing tub 4 can be uniformly poured into the laundry Q in the washing tub 4 in the integrated region in the rotation direction of the washing tub 4. Therefore, the dehydration cleaning process can further improve the cleaning effect.
  • the control unit 30 may also perform a third process of stopping the washing tub 4 in the circulation process and driving the motor 5 to rotate the washing tub 4 only by a predetermined angle before starting the next cycle process in the dehydration washing process.
  • the washing water can be concentratedly poured to one portion in the rotation direction of the washing tub 4 of the laundry Q.
  • the control unit 30 can rotate the washing tub 4 from the stop position in the previous circulation process a little before starting the next cycle process, so that the washing water can be poured into the laundry in the subsequent cycle process.
  • the part of Q that is different from the part of the washing water that has been poured into the washing process. Further, the stop position in the previous loop processing is temporarily stored by the control unit 30.
  • the detergent water Q is slightly changed by washing the detergent water.
  • the position is repeated a plurality of times, and finally, a sufficient amount of detergent water can be uniformly poured into the laundry Q in the washing tub 4 in the integrated region in the rotation direction of the washing tub 4. Therefore, the cleaning effect by the detergent water can be further improved.
  • the detergent water can be uniformly poured into the entire laundry Q in the initial stage of the dehydration washing process, and a large amount of the washing liquid is started from the sixth cycle.
  • the detergent water is poured to the portion of the laundry Q, whereby the cleaning effect of the portion of the laundry Q impregnated with the detergent water can be improved.
  • the combination of the first to third processes can be arbitrarily set in accordance with the magnitude of the load amount of the laundry Q and the mode of the washing operation. For example, in the case of a mode in which the amount of laundry is small and the load is small, and the cotton which is easy to absorb water is washed, even if only a small amount of detergent water is uniformly poured onto the laundry Q, the detergent water easily permeates into the washing.
  • the lower portion of the object Q thus increases the frequency of the first process and the second process, and reduces the frequency of the third process.
  • the detergent water is difficult because a large amount of detergent water is not poured to a part of the laundry Q. It infiltrates into the lower portion of the laundry Q, thus increasing the frequency of the third treatment, reducing the frequency of the first treatment and the second treatment.
  • the control portion 30 may open the water supply valve 7 in the step S1 of the circulation soaking process, and supply a part of the water supply amount of the entire washing process to the washing tub 4 to generate detergent water. Thereby, water saving of the entire washing operation can be achieved, and a high concentration of detergent water can be produced. Further, the water supply amount of the entire washing process is, for example, 60 L. In this case, the water supply amount of the circulation soaking process is set to about 1/3 to 1/2 of 60 L, for example, 20 L.
  • the high concentration here means a range of the concentration of 2 to 3 times, for example.
  • control unit 30 may store the detergent water in the washing tub 4 by closing the second drain valve 22 only for a predetermined period of time in at least one soaking process. Thereby, by the amount accumulated in the washing tub 4 The detergent water can efficiently treat the laundry Q to the same state as the immersion, so that the dehydration cleaning process can further improve the cleaning effect. In this case, all of the detergent water in the water tank 13 can be stored in the washing tub 4, whereby the state equivalent to the immersion can be further efficiently achieved. Further, in the soaking process in the case where the second drain valve 22 is closed, the second drain valve 22 is opened after the lapse of the above-described predetermined time, and the detergent water in the outer tub 3 and the washing tub 4 is returned to the water tank 13.
  • the discharge port 6B of the water supply path 6 discharges the water having the detergent passing through the detergent storage unit 8 toward the position where the laundry Q in the washing tub 4 is displaced. That is, when the water supply in the circulation soaking process is performed, the water of the detergent with the detergent containing portion 8 is supplied so as not to be directly hit on the laundry Q. Thereby, it is possible to suppress the occurrence of a situation in which the ultra-high concentration detergent before being dissolved in water adheres only to a part of the surface of the laundry Q, and the entire laundry Q cannot be uniformly washed.
  • the control unit 30 may change the processing time of each of the circulation processing, the saturation treatment, and the dehydration treatment according to the magnitude of the load amount of the laundry Q in the washing tub 4. Specifically, when the amount of the laundry Q is large and the load is large, since a large amount of detergent water needs to be poured into the laundry Q to permeate it, the control unit 30 usually treats the respective processing times of the circulation treatment and the saturation treatment. Set it longer. Further, since it takes time to dehydrate the laundry Q impregnated with a large amount of detergent water, the control unit 30 usually sets the treatment time of the dehydration treatment to be long.
  • the control unit 30 when the amount of the laundry Q is small and the load is small, the control unit 30 usually performs the cycle treatment because a small amount of detergent water is poured into the laundry Q to permeate it to obtain a sufficient cleaning effect. And the processing time for each of the soaking treatments is set to be short. Further, since the laundry Q impregnated with a small amount of detergent water can be dehydrated in a short time, the control unit 30 usually sets the treatment time of the dehydration treatment to be short. Thereby, the most suitable cyclic soaking process can be performed for each load amount. Therefore, the cleaning effect by the detergent water in the dehydration washing process can be further improved.
  • a circulation soaking process equivalent to omitting the dehydration treatment in the dehydration washing process may be performed before the dehydration washing process.
  • the circulation process and the soaking process are repeated during the period from the start of the water supply to the lapse of the predetermined time.
  • the laundry Q is treated in the same state as the immersion, whereby the laundry is efficiently floated from the laundry Q, so that the laundry Q can be efficiently performed in the subsequent dehydration cleaning process. Cleaning.
  • the water supply of the step S1 in the dehydration washing process may be omitted, or When this water supply is performed, the water from the discharge port 6B of the water supply path 6 is directly poured to the laundry Q.
  • the laundry Q in the dehydration washing process, by repeating the circulation treatment and the impregnation treatment, the laundry Q can be treated in a state equivalent to the immersion with a sufficient amount of detergent water. Further, in the dehydration treatment, since the detergent water is in a state of returning to the water tank 13 in the previous impregnation treatment, the washing tub 4 can be rotated at a high speed without being hindered by the detergent water, and the dirt is discharged from the laundry Q. Remove. Therefore, even when the main washing process is omitted, a sufficient washing effect can be exhibited.
  • the one end portion 11A of the circulation path 11 is connected to the drain passage 9 (see FIG. 1), but may be directly connected to the lower end portion of the water tank 13.
  • FIGS. 4 to 6 are schematic views of a washing machine 1 of a first modification.
  • Fig. 5 is a schematic view of a washing machine 1 of a second modification.
  • Fig. 6 is a schematic view of a washing machine 1 of a third modification.
  • FIGS. 4 to 6 the same portions as those described in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted.
  • the discharge port 6B of the water supply path 6 is as As indicated by the thick solid arrows in Fig. 1, the gap 19 toward the outer tub 3 and the washing tub 4 is discharged at a position shifted from the laundry Q in the washing tub 4.
  • a first modification and a second modification are exemplified.
  • the water supply path 6 extends from the detergent accommodating portion 8 between the circumferential wall 3A of the outer tub 3 and the casing 2 and extends to the lower side Z2, and the other end portion 6C of the water supply path 6 It is connected to the lower end portion of the circumferential wall 3A.
  • the water supply path 6 in this case is a flow path passing through the outer tub 3, and the other end portion 6C
  • the discharge port 6B faces the lower end portion of the gap 19 between the outer tub 3 and the washing tub 4 from the lateral direction Y.
  • the washing machine 1 of the first modification includes the branch path 25 branched from the water supply path 6 in the detergent accommodating portion 8.
  • the branch path 25 is a flow path extending from the detergent accommodating portion 8 to the lower side Z2, and a water supply port 25A that faces the inlet and outlet 4D of the washing tub 4 from the upper side Z1 is provided at the lower end thereof.
  • a water supply valve 26 is provided in the middle of the branch path 25.
  • the water supply valve 7 will be referred to as a first water supply valve 7
  • the water supply valve 26 will be referred to as a second water supply valve 26.
  • the opening and closing of the water supply valve 26 is controlled by the control unit 30.
  • the control unit 30 opens the first water supply valve 7 in a state where the second water supply valve 26 is closed while the water supply in step S1 is being performed.
  • the water from the faucet is supplied with detergent to the washing tub 4 after passing through the detergent accommodating portion 8 and flowing down to the water supply path 6, as indicated by a thick solid arrow, from the discharge port 6B.
  • the bottom wall 4B is also close to the space 27 of the lower side Z2.
  • the discharge port 6B discharges the water flowing through the guide flow path 29 toward the space 27, that is, at a position shifted from the laundry Q in the washing tub 4.
  • the water with the detergent is supplied so as not to be directly hit on the laundry Q.
  • the control unit 30 opens the second water supply valve 26 in a state where the first water supply valve 7 is closed. Thereby, the water from the faucet is directly supplied into the washing tub 4 from the water supply port 25A through the branch path 25. In other words, the initial water supply is performed using the water supply path 6, and the subsequent water supply is performed using the branch path 25.
  • the other end portion 6C of the water supply path 6 passes through the inlet and outlet 3D of the outer tub 3, and the discharge port 6B of the other end portion 6C faces the inlet and outlet 4D of the washing tub 4 from the upper side Z1.
  • the washing machine 1 of the second modification is provided with a guide portion 28 inside the washing tub 4.
  • the guide portion 28 is a water guide shape extending in the vertical direction Z from the upper end portion to the lower end portion of the circumferential wall 4A of the washing tub 4, and is formed in an arc shape convexly curved toward the axis J side in a plan view. .
  • the guide portion 28 is fixed to the circumferential wall 4A so as to cover one portion on the circumference of the circumferential wall 4A from the side of the axis J. Thereby, a guide flow path 29 extending in the vertical direction Z is formed between the guide portion 28 and the circumferential wall 4A.
  • the upper end portion of the guide portion 28 is a bowl-shaped receiving portion 28A that is formed to bulge toward the axis J side.
  • the guiding flow path 29 is exposed from the receiving portion 28A to the upper side Z1.
  • the discharge port 6B is disposed to face the receiving portion 28A from the upper side Z1.
  • the control unit 30 opens the water supply valve 7 when the water supply in step S1 is performed. Thereby, the water from the faucet passes through the detergent accommodating portion 8, passes the detergent, passes through the water supply path 6, and falls from the discharge port 6B to the receiving portion 28A of the guide portion 28 as indicated by a thick solid arrow.
  • the water received by the receiving portion 28A flows down in the guiding flow path 29, leaks from the through hole 4E of the washing tub 4 to the outside of the washing tub 4, and reaches the lower side Z2 in the outer tub 3 than the bottom wall 4B of the washing tub 4. Space 27.
  • the discharge port 6B discharges the water flowing through the guide flow path 29 toward the guide portion 28, that is, at a position shifted from the laundry Q in the washing tub 4. Thereby, the water with the detergent is supplied so as not to be directly hit on the laundry Q.
  • the circulation path 11 includes a main flow path 11D extending from the one end portion 11A to the other end portion 11C and having the spouting port 11B, and a branch flow path 11E branched from the main flow path 11D.
  • the branch flow path 11E is connected to the lower end portion of the circumferential wall 3A of the outer tub 3 from the lateral direction Y in Fig. 6, it may be connected to the water tank 13 instead of the outer tub 3.
  • a switching valve 35 is provided at a connection portion between the main flow path 11D and the branch flow path 11E.
  • the switching valve 35 is a so-called three-way valve that is connected to both side portions of the main flow path 11D that sandwich the switching valve 35 and the branch flow path 11E.
  • the switching valve 35 is controlled to open and close by the control unit 30, thereby switching the flow of the detergent water in the circulation path 11 to the main flow path 11D or the branch flow path 11E.
  • the circulation process can circulate the detergent water between the washing tub 4 and the circulation path 11 by switching the flow of the detergent water in the circulation path 11 to the main flow path 11D. Further, by switching the flow of the detergent water in the circulation path 11 to the branch flow path 11E at a time point before the circulation process or the like, the detergent water in the circulation path 11 does not reach the washing tub 4 but directly via the branch flow.
  • the road 11E enters the outer tub 3 or the water tank 13 with a shortcut. Thereby, since the frequency of the detergent water flowing through the pump 12 can be increased and the stirring of the detergent water by the impeller of the pump 12 can be promoted, the detergent can be efficiently dissolved in water to generate a high-concentration detergent water. Therefore, the dehydration cleaning process can further improve the cleaning effect by using a high concentration of detergent water.

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Abstract

本发明提供一种洗衣机，其能实现利用具有纵向延伸的轴线的洗涤桶的旋转和洗涤剂水来对洗涤桶内的洗涤物进行清洗时的清洗效果的提高。洗衣机(1)包括：洗涤桶(4)，收容于外桶3内；电机(5)，使洗涤桶(4)旋转；水箱(13)，从外桶(3)接收混有洗涤剂的洗涤剂水；循环路(11)，用于汲取洗涤剂水并将其从上侧(Z1)注入洗涤桶(4)内；泵(12)，将水箱(13)内的洗涤剂水摄入循环路(11)并使其在循环路(11)内上升；以及控制部(30)，执行包括脱水清洗过程的洗涤运转。在脱水清洗过程中，反复进行循环处理、浸透处理以及循环处理脱水处理，其中，循环处理是使水箱(13)内的洗涤剂水在洗涤桶(4)与循环路(11)之间循环并将其浇至洗涤桶(4)内的洗涤物(Q)；浸透处理是在循环处理之后使洗涤剂水在洗涤桶(4)内浸透洗涤物(Q)并返回水箱(13)；脱水处理是在浸透处理之后通过使洗涤桶(4)旋转从而对洗涤物(Q)进行脱水。

Description

洗衣机 技术领域
本发明涉及洗衣机。
背景技术
在下述专利文献1所述的滚筒式洗衣机中，在洗涤过程中，进行摔打洗涤过程和摔打洗涤过程之后的挤水洗涤过程。在摔打洗涤过程中，通过反复进行设于水筒内的滚筒状旋转筒的正转、反转以及停顿，从而在滚筒状旋转筒内，反复进行将洗涤物提升落下的动作。在挤水洗涤过程中，通过使滚筒状洗涤筒以比摔打洗涤过程时更高的速度进行旋转，从而洗涤物因离心力而被甩压到滚筒状洗涤筒的内表面，洗涤物内的洗涤液通过滚筒状洗涤筒的圆周面的小孔被挤出至滚筒状洗涤筒之外。该滚筒式洗衣机设有储水箱，通过在摔打洗涤过程结束时使洗涤水的一部分转移至储水箱，从而水筒内的重量减轻，因此能实现挤水洗涤过程中振动、噪声的降低。
在利用收容洗涤物的洗涤桶的旋转和混有洗涤剂的洗涤剂水对洗涤物进行清洗的情况下，始终期望清洗效果的提高。特别是，与专利文献1的滚筒式洗衣机不同，对于具有拥有纵向延伸的轴线的洗涤桶的立式洗衣机而言，由于洗涤剂水在洗涤桶中偏向于蓄积在底侧，因此存在洗涤桶内的洗涤物仅有下部浸渍有洗涤剂水的问题。因此，难以实现洗涤剂水带来的清洗效果的提高。
现有技术文献
专利文献
专利文献1：日本特开平8-299658号公报
发明内容
发明所要解决的问题
本发明是鉴于该背景而完成的发明，目的在于提供一种洗衣机，其能利用具有纵向延伸的轴线的洗涤桶的旋转和洗涤剂水来实现对洗涤桶内的洗涤物进行清洗时的清洗效果的提高。
用于解决问题的方案
本发明的洗衣机，包括：外桶，可蓄水；洗涤桶，具有用于使水在所述洗涤桶与所述外桶之间往来的贯通孔和纵向延伸的轴线，收容洗涤物并收容于所述外桶内；电机，使所述洗涤桶旋转；水箱，连接于所述外桶，从所述外桶接收混有洗涤剂的洗涤剂水；循环路，从所述水箱内汲取洗涤剂水并将其从上侧注入所述洗涤桶内；泵，将所述水箱内的洗涤剂水摄入所述循环路并使其在所述循环路内上升；以及执行单元，执行包括脱水清洗过程的洗涤运转，所述脱水清洗过程反复进行循环处理、浸透处理以及脱水处理，其中，循环处理是通过驱动所述泵从而使所述水箱内的洗涤剂水在所述洗涤桶与所述循环路之间循环并将其浇至所述洗涤桶内的洗涤物；浸透处理是在所述循环处理之后停止所述泵的驱动并使洗涤剂水在所述洗涤桶内浸透洗涤物并返回至所述水箱；脱水处理是在所述浸透处理之后通过驱动所述电机而使所述洗涤桶旋转，从而对洗涤物进行脱水。
此外，本发明的特征在于，所述执行单元在至少一次所述循环处理中驱动所述电机，使所述洗涤桶旋转。
此外，本发明的特征在于，在所述水箱形成有排气孔，所述洗衣机包括排气管，所述排气管具有连接于所述排气孔的一端部和连接于所述外桶的上部的另一端部。
此外，本发明的特征在于，包括：供水路，用于对所述洗涤桶进行供水；以及洗涤剂收容部，连接于所述供水路并收容洗涤剂，所述供水路具有吐出口，将经过所述洗涤剂收容部并流过所述供水路的水朝向错开所述洗涤桶内的洗涤物的位置吐出。
此外，本发明的特征在于，所述循环路包括：主流路，具有从上侧面向所述洗涤桶内的吐水口；以及分支流路，从所述主流路分支并连接于所述外桶或所述水箱，所述洗衣机包括换向阀，将所述循环路中的洗涤剂水流切换至所述 主流路或所述分支流路。
此外，本发明的特征在于，包括：流路，连接所述外桶与所述水箱；以及阀，对所述流路进行开闭，所述执行单元在至少一次所述浸透处理中关闭所述阀，在所述洗涤桶内蓄积洗涤剂水。
发明效果
根据本发明，洗衣机在具有纵向延伸的轴线的洗涤桶中收容洗涤物。经过洗涤桶的贯通孔在外桶与洗涤桶之间往来的水蓄积于外桶和洗涤桶双方。连接于外桶的水箱能从外桶接收混有洗涤剂的洗涤剂水。水箱内的洗涤剂水在通过泵被摄入循环路并在循环路内上升后，被从上侧注入洗涤桶内。
执行单元执行包括脱水清洗过程的洗涤运转，所述脱水清洗过程反复进行循环处理、循环处理之后的浸透处理、以及浸透处理之后的脱水处理。作为循环处理，执行单元通过驱动泵从而使水箱内的洗涤剂水在洗涤桶与循环路之间循环并将其浇至洗涤桶内的洗涤物。作为浸透处理，执行单元停止泵的驱动并使洗涤剂水在洗涤桶内浸透洗涤物并返回水箱。作为脱水处理，执行单元通过驱动电机而使洗涤桶旋转，从而对洗涤物进行脱水。
通过多次循环处理，水箱内的洗涤剂水被充分地浇至洗涤桶内的洗涤物，在各循环处理之后的浸透处理中，通过足量的洗涤剂水，使洗涤物被处理成与浸泡同等的状态。由此，脏污高效地从洗涤物整体浮出。并且，在各浸透处理之后的脱水处理中，通过伴随洗涤桶的旋转的离心力，脏污随着洗涤剂水被从洗涤物中挤出来。在脱水处理之前的浸透处理中，外桶内以及洗涤桶内的洗涤剂水返回水箱。因此，在脱水处理中，由于洗涤桶能不受洗涤剂水阻碍地顺利旋转至目标最大转数，因此能通过洗涤桶的高速旋转高效地对洗涤物进行脱水并将脏污从洗涤物除去。
以上的结果是，能实现利用具有纵向延伸的轴线的洗涤桶的旋转和洗涤剂水进行的脱水清洗过程的清洗效果的提高。
此外，根据本发明，执行单元在至少一次循环处理中驱动电机，使洗涤桶旋转。由此，能将从循环路注入洗涤桶内的洗涤剂水遍及洗涤桶的旋转方向的整个区域均匀地浇向洗涤桶内的洗涤物。因此，脱水清洗过程能实现清洗效果 的进一步提高。
此外，根据本发明，在浸透处理中使清洗水返回水箱时，由于水箱内的空气从排气孔跑到水箱外，因此洗涤剂水能顺利地流入水箱内。一端部连接于排气孔的排气管的另一端部连接于外桶的上部。由此，由于即使水箱内的气泡进入排气管内也会被导入外桶内，因此能抑制气泡堵塞排气管的情况发生。此外，排气管的另一端部由于连接于外桶的上部，因此配置于比外桶内的上限水位还高的位置。因此，能防止外桶内的水溢入排气管。
此外，根据本发明，供水路的吐出口将经过洗涤剂收容部而带有洗涤剂的水朝向错开洗涤桶内的洗涤物的位置吐出。由此，能抑制因溶于水之前的超高浓度的洗涤剂仅附着于洗涤物的表面的一部分而导致无法均匀地清洗洗涤物整体的情况发生。
此外，根据本发明，通过将循环路中的洗涤剂水流切换至主流路，从而能使洗涤剂水在洗涤桶与循环路之间循环。通过将循环路中的洗涤剂水流切换至分支流路，从而循环路内的洗涤剂水不到达洗涤桶而是经由分支流路走捷径地进入外桶或水箱。由此，由于能提高洗涤剂水流过泵的频率并促进由泵进行的洗涤剂水的搅拌，因此能高效地使洗涤剂溶于水，生成高浓度的洗涤剂水。因此，在脱水清洗过程中，能通过高浓度的洗涤剂水来实现清洗效果的进一步提高。
此外，根据本发明，在至少一次浸透处理中，执行单元关闭对连通外桶和水箱的流路进行开闭的阀，使洗涤剂水蓄积于洗涤桶内。由此，由于能通过蓄积于洗涤桶内的足量的洗涤剂水高效地将洗涤物处理成与浸泡同等的状态，因在脱水清洗过程能实现清洗效果的进一步提高。
附图说明
图1是本发明的一实施方式的洗衣机的示意图。
图2是表示洗衣机的电结构的框图。
图3是表示脱水清洗过程中的控制动作的流程图。
图4是第一变形例的洗衣机的示意图。
图5是第二变形例的洗衣机的示意图。
图6是第三变形例的洗衣机的示意图。
附图标记说明
1：洗衣机；3：外桶；3F：上部；4：洗涤桶；4E：贯通孔；5：电机；6：供水路；6B：吐出口；8：洗涤剂收容部9C：上侧流路；11：循环路；11B：吐水口；11D：主流路；11E：分支流路；12：泵；13：水箱；13A：排气孔；22：第二排水阀；23：排气管；23A：一端部；23B：另一端部；30：控制部；35：换向阀；J：轴线；Q：洗涤物；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的示意图。将图1中的上下方向称为洗衣机1的上下方向Z，将图1中的左右方向称为洗衣机1的横向Y。上下方向Z与垂直方向一致，横向Y与水平方向一致。在上下方向Z中，将上侧称作上侧Z1，将下侧称作下侧Z2。
虽然洗衣机1也包括具有干衣功能的洗衣干衣机，但是以下省略干衣功能，以仅执行洗涤运转的洗衣机为例来对洗衣机1进行说明。洗衣机1包括机壳2和配置于机壳2内的外桶3、洗涤桶4、电机5、供水路6、供水阀7、洗涤剂收容部8、排水路9、第一排水阀10、循环路11、泵12以及水箱13。
机壳2例如为金属制，形成为箱状。在机壳2的上表面2A形成有使机壳2内外连通的出入口2B。在上表面2A设有对出入口2B进行开闭的门14和由开关、液晶面板等构成的显示操作部15。使用者通过操作显示操作部15的开关等，能接通/切断洗衣机1的电源、或自由设定洗涤运转的模式、或对洗衣机1发出洗涤运转开始、停止等指示。与洗涤运转有关的信息以可目视的方式显示于显示操作部15的液晶面板等。
外桶3例如为树脂制，形成为有底圆筒状，经由所谓的吊棒等弹性支承构件(未图示)由机壳2弹性支承。外桶3内可蓄水。穿过外桶3的圆心的虚拟 直线是外桶3的轴线J。轴线J沿垂直方向或相对于垂直方向少许倾斜的方向即纵向延伸。有底圆筒状的外桶3具有：沿轴线J配置的大致圆筒状的圆周壁3A、从下侧Z2封堵圆周壁3A的中空部分的圆板状的底壁3B、以及将圆周壁3A的上端缘卷边并且向轴线J侧伸出的圆环状的环状壁3C。外桶3形成有：由环状壁3C所围成并从下侧Z2与机壳2的出入口2B对置的圆形的出入口3D、以及沿上下方向Z贯通底壁3B的圆心部分的贯通孔3E。
洗涤桶4是形成为比外桶3小一圈的有底圆筒状的金属制滚筒，能在内部收容洗涤物Q。洗涤桶4同轴状地收容于外桶3内。因此，洗涤桶4的轴线即上述的轴线J。有底圆筒状的洗涤桶4具有：沿轴线J配置的大致圆筒状的圆周壁4A、从下侧Z2封堵圆周壁4A的中空部分的圆板状的底壁4B、以及将圆周壁4A的上端缘卷边并且向轴线J侧伸出的圆环状的环状壁4C。洗涤桶4形成有：由环状壁4C所围成并从下侧Z2与外桶3的出入口3D对置的圆形的出入口4D、以及贯通圆周壁4A和底壁4B的许多贯通孔4E。
当打开上述的门14时，由于出入口2B、出入口3D以及出入口4D以沿上下方向Z排列的状态从机壳2的上表面2A向上侧Z1露出，因此能经由这些出入口将洗涤物Q投入取出洗涤桶4内。外桶3内的水穿过贯通孔4E往来于外桶3与洗涤桶4之间，也蓄积于洗涤桶4。因此，外桶3内的水位与洗涤桶4内的水位一致。在底壁4B的圆心位置，设有沿轴线J向下侧Z2突出的旋转轴17。旋转轴17从上侧Z1插通外桶3的底壁3B的贯通孔3E。
电机5例如由变频电机构成。电机5在机壳2内配置于外桶3的下侧Z2，经由固定件(未图示)等固定于外桶3的底壁3B。电机5具有绕轴线J旋转的输出轴18。输出轴18连结于洗涤桶4的旋转轴17。当电机5被驱动时，电机5所产生的驱动力从旋转轴17传递至输出轴18，洗涤桶4通过该驱动力而绕轴线J旋转。需要说明的是，也可以在旋转轴17与输出轴18之间夹装由离合器等构成的传递机构(未图示)。此外，在洗涤桶4内设有用于搅拌所收容的洗涤物Q的旋转的波轮(未图示)，电机5的驱动力也可以从传递机构选择性地传递至洗涤桶4以及波轮的一方或双方。此外，在本实施方式中，为了便于说明，电机5的转数与洗涤桶4以及波轮的转数相同。
供水路6是具有连接于水龙头(未图示)的一端部6A和形成有吐出口6B 的另一端部6C的流路。供水路6的另一端部6C从上侧Z1贯通外桶3的环状壁3C，吐出口6B以从上侧Z1面向外桶3的圆周壁3A与洗涤桶4的圆周壁4A之间的横向Y上的间隙19的方式进行配置。
供水阀7设于供水路6的中途。当打开供水阀7时供水路6打开。由此，来自水龙头的水如粗实线箭头所示，经过供水路6并从吐出口6B流下至间隙19，蓄积于外桶3。这时，吐出口6B将流入供水路6的水朝向外桶3与洗涤桶4之间的间隙19即错开洗涤桶4内的洗涤物Q的位置吐出。蓄积于外桶3的水经过洗涤桶4的贯通孔4E，也蓄积于洗涤桶4。如此，当打开供水阀7时，从供水路6对洗涤桶4进行供水。另一方面，由于当关闭供水阀7时供水路6关闭，因此能停止供水。
洗涤剂收容部8形成为收容洗涤剂的箱状，连接于供水路6的中途。洗涤剂收容部8的内部空间构成供水路6的中途部分。当打开供水阀7开始进行供水时，来自水龙头的水经过洗涤剂收容部8而带有洗涤剂，并在流入供水路6后从吐出口6B被供给至外桶3、洗涤桶4。由此，能在外桶3以及洗涤桶4蓄积混有洗涤剂的洗涤剂水。
排水路9是具有在外桶3的底壁3B从下侧Z2连接于避开贯通孔3E的位置的一端部9A、和在比一端部9A还低的位置处被拉出至机壳2之外的另一端部9B的流路。
第一排水阀10设于排水路9的中途。当打开第一排水阀10时排水路9打开。由此，蓄积于外筒3以及洗涤桶4的洗涤剂水经过排水路9被排出至机外。如此，由于当在进行了排水的状态下关闭第一排水阀10时，排水路9关闭，因此能停止排水。
循环路11是具有在排水路9连接于一端部9A与第一排水阀10之间的部分的一端部11A、和形成有吐水口11B的另一端部11C的流路。循环路11从一端部11A向横向Y延伸后弯折，经过机壳2与外桶3之间的间隙并向上侧Z1延伸后向轴线J侧弯折，到达另一端部11C。另一端部11C在外桶3的出入口3D的正上方向下侧Z2弯折，吐水口11B在另一端部11C的下端开口，自洗涤桶4的出入口4D，从上侧Z1面向洗涤桶4内。泵12是内置有旋转的叶轮(未图示)的离心泵等，设于循环路11的中途。
水箱13是具有例如30L左右容量的中空体，在机壳2内配置于比外桶3还要靠近下侧Z2的空间。在排水路9的连接于循环路11的一端部11A的连接部分与一端部9A之间，夹装有水箱13。水箱13的内部空间构成排水路9的中途部分。排水路9的从一端部9A到水箱13为止的上侧流路9C是连通外桶3和水箱13的流路，从外桶3的底壁3B向下侧Z2延伸并从上侧Z1连接于水箱13的顶壁。由此，水箱13经由上侧流路9C连接于外桶3。在上侧流路9C设有对上侧流路9C进行开闭的第二排水阀22。
对于排水路9的从水箱13到另一端部9B为止的下侧流路9D而言，上端部从下侧Z2连接于水箱13的底壁。在下侧流路9D设有上述的第一排水阀10。在下侧流路9D，在第一排水阀10与水箱13之间的部分，连接有循环路11的一端部11A。需要说明的是，水箱13可以固定于外桶3，也可以固定于机壳2的下部。在水箱13固定于机壳2的下部的情况下，排水路9的至少上侧流路9C具有可挠性，使得洗涤运转过程中外桶3的振动不会传递至水箱13。
当第一排水阀10和第二排水阀22双方都打开时，从外桶3流出至排水路9的洗涤剂水一度经由水箱13后到达另一端部9B，向机外排出。另一方面，当在第二排水阀22打开的状态下关闭第一排水阀10时，从外桶3流出至排水路9的上侧流路9C的洗涤剂水不向机外排出，而是被水箱13接收并蓄积于水箱13内。如上所述，由于水箱13位于比外桶3还要靠近下侧Z2的位置，上侧流路9C从外桶3的底壁3B向下侧Z2延伸并从上侧Z1连接于水箱13的顶壁，因此外桶3内的洗涤剂水通过自重顺利地流入水箱13。
在水箱13的顶壁形成有从上侧Z1连通至水箱13内的排气孔13A。与排气孔13A关连地，洗衣机1包括排气管23。排气管23具有从上侧Z1连接于排气孔13A的一端部23A和从横向Y连接于外桶3的上部3F的另一端部23B，从一端部23A朝向另一端部23B向上侧Z1延伸。上部3F是指外桶3的圆周壁3A的比外桶3内假定的上限水位还要靠近上侧Z1的部分。
在使外桶3内的洗涤剂水流入水箱13时，由于水箱13内的空气从排气孔13A跑到水箱13之外，因此洗涤剂水能顺利地流入水箱13内。并且，通过使排气管23的另一端部23B连接于外桶3的上部3F，从而即使水箱13内的气泡进入排气管23内也会被导入外桶3内，因此能抑制气泡堵在排气管23的情况 发生。此外，连接于外桶3的上部3F的另一端部23B配置于比外桶3内的上限水位还高的位置。因此，能防止外桶3内的水溢入排气管23。
泵12被驱动，从而将水箱13内的洗涤剂水摄入循环路11的一端部11A并使其在循环路11内上升。由此，洗涤剂水从水箱13内被汲取至循环路11内，并从另一端部11C的吐水口11B吐出。从吐水口11B吐出的洗涤剂水如粗虚线箭头所示，流下至洗涤桶4的出入口4D，并从上侧Z1注入洗涤桶4内。当继续驱动泵12时，水箱13内的洗涤剂水在洗涤桶4与循环路11之间循环。泵12在机壳2内配置于比外桶3还要靠近下侧Z2的空间的最下部也就是比水箱13还低的位置，因此能将水箱13内的洗涤剂水毫无残留地摄入循环路11内。
洗衣机1包括作为执行单元的控制部30。控制部30例如是包括CPU和RQM、RAM等存储器部的微型计算机，配置于机壳2内。参照表示洗衣机1的电结构的框图即图2，洗衣机1还包括水位传感器31、旋转传感器32、以及计时用的计时器33。水位传感器31、旋转传感器32以及计时器33和上述的电机5、泵12、显示操作部15、供水阀7、第一排水阀10以及第二排水阀22分别电连接于控制部30。
水位传感器31是检测外桶3以及洗涤桶4的水位的传感器，水位传感器31的检测结果被实时输入控制部30。旋转传感器32是读取电机5的转数，严格来讲，是读取电机5的输出轴18的转数的装置，例如由每当输出轴18旋转规定的旋转角度就输出脉冲波的霍尔IC(未图示)构成。旋转传感器32所读取的转数被实时输入控制部30。控制部30基于输入的转数来控制施加于电机5的电压，详细而言控制施加于电机5的电压的占空比，驱动电机5使其以所希望的转数进行旋转。控制部30也对泵12的驱动进行控制。
如上所述，当使用者操作显示操作部15来选择洗涤运转的运转条件等时，控制部30接收该选择。控制部30将对使用者而言必要的信息以可目视的方式显示于显示操作部15。控制部30控制供水阀7、第一排水阀10以及第二排水阀22各自的开闭。因此，控制部30能通过在至少关闭第一排水阀10的状态下打开供水阀7从而对外桶3以及洗涤桶4进行供水，能通过在关闭第一排水阀10的状态下打开第二排水阀22从而使对水箱13蓄水，能通过打开第一排水阀10以及第二排水阀22从而执行外桶3、洗涤桶4以及水箱13的排水。
接着，对洗衣机1通过控制部30执行的洗涤运转进行说明。洗涤运转包括：由最初的脱水清洗过程和脱水清洗过程之后的正式洗涤过程构成的洗涤过程、洗涤过程之后的漂洗过程、以及脱水过程。可以将脱水清洗过程视为洗涤运转中独立的过程，也可以像本实施方式这样，将其视为洗涤过程的一部分。脱水过程包括：在洗涤运转的最后执行的最终脱水过程；以及在洗涤过程、漂洗过程之后执行的中间脱水过程。
控制部30在洗涤运转开始之前，检测洗涤桶4内的洗涤物Q的量来作为负荷量。负荷量的单位例如是kg。作为负荷量检测的一例，控制部30可以根据由洗衣机1所具备的重量传感器(未图示)所检测的洗涤物Q的重量来取得负荷量。此外，也可以根据使洗涤桶4低速稳定旋转时电机5的转数的波动来检测负荷量。此外，在具备上述的波轮的情况下，控制部30在使载有洗涤物Q的波轮旋转规定时间之后立即使电机5的驱动停止而使电机5惯性旋转，并测定此时的电机5的惯性旋转量。负荷量越大，连结于载有较重的洗涤物Q的波轮的电机5的惯性旋转量越小。负荷量越小，连结于载有较轻的洗涤物Q的波轮的电机5的惯性旋转量越大。控制部30根据惯性转数的大小来检测负荷量。
参照图3的流程图，对循环浸透过程进行说明。在脱水清洗过程期间，第一排水阀10始终处于关闭的状态，第二排水阀22原则上始终处于打开的状态。随着脱水清洗过程开始，控制部30使供水阀7仅打开规定时间进行供水(步骤S1)。由此，从供水路6的吐出口6B流出的洗涤剂水经由外桶3以及排水路9的上侧流路9C到达水箱13，蓄积于水箱13。
接着，控制部30实施第一次循环处理(步骤S2)。在循环处理中，控制部30通过驱动泵12，从而使洗涤剂水在洗涤桶4与循环路11之间循环，并在此时使洗涤剂水从循环路11的吐水口11B浇至洗涤桶4内的洗涤物Q。循环处理的处理时间也就是驱动泵12的时间为例如15秒左右。另外，在第一次循环处理中浇至洗涤物Q的洗涤剂水的量是洗涤物Q的重量的3倍左右，例如，在8kg的洗涤物Q的情况下为24L左右，量很大。此外，对于在循环路11内经过泵12的洗涤剂水而言，由于洗涤剂被泵12的叶轮打碎细化并溶于水中，因此能生成高浓度的洗涤剂水。
循环处理后，控制部30实施第一次浸透处理(步骤S3)。在浸透处理中， 控制部30使泵12的驱动停止并在洗涤桶4内使洗涤剂水浸透洗涤物Q。具体而言，在循环处理之中从上侧Z1浇向洗涤物Q的洗涤剂水通过自重渗入洗涤物Q。此外，在浸透处理中，由于第二排水阀22继续处于打开状态，因此未渗入洗涤物Q的洗涤剂水从洗涤桶4的贯通孔4E流出至外桶3，并从排水路9的上侧流路9C返回水箱13。
浸透处理之后，控制部30实施第一次脱水处理(步骤S4)。在脱水处理中，控制部30驱动电机5，使洗涤桶4旋转。由此，由于伴随洗涤桶4的旋转的离心力作用于洗涤桶4内的洗涤物Q，因此洗涤物Q被脱水。
接着，控制部30实施第二次循环处理(步骤S5)，此后实施第二次浸透处理(步骤S6)，此后实施第二次脱水处理(步骤S7)。另外，在循环处理之前的脱水处理中，通过脱水而从洗涤物Q挤出来的洗涤剂水经由外桶3以及排水路9的上侧流路9C返回水箱13。此外，如上所述，在脱水处理之前的浸透处理中洗涤剂水也从洗涤桶4返回水箱13。因此，在脱水过程后的循环处理开始时，洗涤剂水处于大量蓄积于水箱13内的状态。因此，在循环处理时，能以泵12不进行空转的方式迅速地开始洗涤剂水的循环。此外，在第一次循环处理中，由于洗涤前的洗涤物Q处于干燥而能吸收大量的洗涤剂水的状态，因此将处理时间设定得较长，但从第二次循环处理开始，由于洗涤物Q处于已经吸收了一定程度的洗涤剂水的状态，因此将处理时间设定得比第一次循环处理的处理时间短。基于同样的理由，在第一次浸透处理中将处理时间设定得较长，但从第二次浸透处理开始，将处理时间设定得比第一次浸透处理的处理时间短。
在脱水清洗过程中，控制部30，按顺序反复进行循环处理(步骤S5)、浸透处理(步骤S6)、脱水处理(步骤S7)，直到脱水处理总共实施了规定次数(步骤S8中为“否”)。作为一例，上述的规定次数为25次，在该情况下，循环处理和浸透处理分别总共反复25次。另外，作为步骤S8中的判断基准，不使用从步骤S1中供水开始经过的时间，而是使用脱水处理的实施次数，其理由是考虑到由于洗涤物Q的偏倚等，脱水处理还没等到洗涤桶4的转数上升至目标最大转数就会中断的情况。
通过多次循环处理，水箱13内的洗涤剂水充分地浇至洗涤桶4内的洗涤物Q，在各循环处理之后的浸透处理中，通过足量的洗涤剂水，洗涤物Q被处理 成与浸泡同等的状态。由此，高效地使脏污从洗涤物整体Q浮出。并且，在各浸透处理之后的脱水处理中，通过伴随着洗涤桶4的旋转的离心力，脏污随着洗涤剂水一起被从洗涤物Q中挤出。在脱水处理之前的浸透处理中，外桶3内以及洗涤桶4内的洗涤剂水返回水箱13。由此，在脱水处理开始时，外桶3内的水位W处于比洗涤桶4的底壁4B低的状态(参照图1)。因此，在脱水处理中，洗涤桶4不会卷回外桶3内的洗涤剂水，因此能不受该洗涤剂水、洗涤剂水产生的气泡的阻碍地顺利旋转至目标最大转数。此外，脱水处理中的洗涤桶4由于去掉了洗涤剂水而较轻，因此伴随洗涤桶4的旋转的振动降低。因此，能通过洗涤桶4的高速旋转从而高效地对洗涤物Q进行脱水并将脏污从洗涤物Q除去。以上的结果，实现了利用洗涤桶4的旋转和洗涤剂水进行的脱水清洗过程的清洗效果的提高。此外，在脱水处理之后紧接着的循环处理中，能使用刚才返回水箱13的大量的洗涤剂水。
此外，由于在脱水处理中洗涤桶4的转数容易提升，因此能节约电机5的耗电。并且，通过多次循环处理来反复使用水箱13内的洗涤剂水，由此，即使不在每次脱水处理时生成新的洗涤剂水也能确保足量的洗涤剂水，因此还能节约洗涤剂和水。需要说明的是，虽然为了回收洗涤剂水，设置了作为与外桶3另行设置的构件的水箱13，但是例如也可以在外桶3的底壁3B设置凹陷，并在浸透处理的后期，使洗涤桶4内的洗涤剂水返回该凹陷。其中，另行设置水箱13的情况与设置这样的凹陷的情况相比，能轻易地在底壁3B的周边构成用于连结洗涤桶4的旋转轴17和电机的输出轴18的构造等。
并且，当脱水处理实施了规定次数时(在步骤S8中为“是”)，脱水清洗过程结束，控制部30实施下一个过程即正式洗涤过程。随着正式洗涤过程开始，控制部30在继续关闭第一排水阀10的状态下将第二排水阀22关闭，并将供水阀7打开，从而对洗涤桶4进行追加供水。此时，控制部30驱动泵12，使水箱13的洗涤剂水经由循环路11转移至洗涤桶4。由此，洗涤剂水在洗涤桶4中蓄积至比通过步骤S1中的供水而蓄积的洗涤剂水的水位还高的水位。如此，通过将水箱13的洗涤剂水也用于进行供水，从而能将从供水路6供给的水量抑制得较少。
在正式洗涤过程中，控制部30在洗涤桶4蓄积有洗涤剂水的状态下，驱动 电机5，使洗涤桶4旋转或使上述的波轮旋转。由此，在洗涤桶4内产生洗涤剂水的水流，搅拌洗涤物Q。该水流通过施加给洗涤物Q的摩擦、振动等机械力而将脏污从洗涤物Q中除去，或者通过洗涤剂水使脏污被化学分解，由此对洗涤物Q进行正式洗涤。
特别是，由于通过正式洗涤过程之前的脱水清洗过程，洗涤物Q处于脏污容易浮出的状态，因此正式洗涤过程能发挥较高的清洗效果。需要说明的是，在洗涤运转结束时也就是脱水过程结束时，控制部30通过将第一排水阀10和第二排水阀22双方都打开，从而进行外桶3、洗涤桶4以及水箱13所有部件的排水。因此，原则上每次洗涤运转结束，水箱13都是空的。
控制部30也可以在至少一次循环处理中执行驱动电机5而使洗涤桶4以规定转速以下的转速低速旋转的第一处理。使洗涤桶4低速旋转时的电机5的转数是例如50rpm。另外，在脱水清洗过程的脱水处理中使洗涤桶4旋转时的电机5的转数是例如200rpm～800rpm，在脱水过程中使洗涤桶4高速旋转时的电机5的转数是例如600rpm～800rpm。通过在循环处理中使洗涤桶4低速旋转，能抑制洗涤桶4内的洗涤物Q的偏倚、洗涤桶4内的洗涤剂水从出入口4D向外飞溅的情况发生。此外，控制部30也可以在至少一次循环处理中执行控制电机5的驱动而反复进行洗涤桶4的间歇旋转的第二处理。洗涤桶4的间歇旋转是指通过反复进行电机5的通电和断电，从而反复使洗涤桶4停止和旋转。
通过第一处理、第二处理，能将从循环路11返回至洗涤桶4内的洗涤剂水遍及洗涤桶4的旋转方向上的整合区域均匀地浇向洗涤桶4内的洗涤物Q。因此，脱水清洗过程能实现清洗效果的进一步提高。
控制部30也可以在脱水清洗过程中执行在循环处理中使洗涤桶4停止，并在开始接下来的循环处理之前驱动电机5而使洗涤桶4仅旋转规定角度的第三处理。由此，在循环处理中洗涤桶4停止的状态下，能将洗涤水集中浇至洗涤物Q的洗涤桶4的旋转方向上的一个部位。并且，控制部30通过在开始接下来的循环处理之前使洗涤桶4从之前的循环处理中的停止位置开始旋转少许，从而能在该接下来的循环处理中，将洗涤水集中浇至洗涤物Q的与刚才的循环处理中被浇到了洗涤水的部分不同的部分。另外，该之前的循环处理中的停止位置由控制部30暂时存储。如此，通过一边稍微改变洗涤物Q的浸有洗涤剂水的 位置一边多次反复进行循环处理，最终，能将足量的洗涤剂水遍及洗涤桶4的旋转方向上的整合区域均匀地浇向洗涤桶4内的洗涤物Q，。因此，能实现洗涤剂水带来的清洗效果的进一步提高。
在脱水清洗过程中，可以只实施第一～第三处理之的任一种处理，也可以组合实施第一～第三处理中的多种处理。例如，可以在脱水清洗过程的开端的第一次～第五次循环处理中，仅实施第一处理，从第六次循环处理开始，仅实施第三处理。在该情况下，通过第一次～第五次循环处理，能在脱水清洗过程中的初期阶段，将洗涤剂水均匀地浇至洗涤物Q整体，从第六次循环处理开始，将大量的洗涤剂水浇至洗涤物Q局部，由此，能实现洗涤物Q的浸有洗涤剂水的部分的清洗效果的提高。
此外，能根据洗涤物Q的负荷量的大小、洗涤运转的模式，任意地设定第一～第三处理的组合。例如，在洗涤物少而使得负荷量小的情况、洗涤容易吸水的棉等模式的情况下，由于即使只将少量的洗涤剂水均等地浇至洗涤物Q，洗涤剂水也容易渗入至洗涤物Q的下部，因此增加第一处理、第二处理的频率，减少第三处理的频率。另一方面，在洗涤物Q多而使得负荷量大的情况、洗涤较厚的毛毯等模式的情况下，由于不将大量的洗涤剂水集中浇至洗涤物Q的局部的话洗涤剂水就难以渗入至洗涤物Q的下部，因此增加第三处理的频率，减少第一处理、第二处理的频率。
控制部30可以在循环浸透过程的步骤S1中打开供水阀7，将整个洗涤过程的供水量的一部分供水至洗涤桶4来生成洗涤剂水。由此，能实现洗涤运转整体的节水，并能生成高浓度的洗涤剂水。另外，整个洗涤过程的供水量例如是60L，在该情况下，循环浸透过程的供水量设定为60L的1/3～1/2左右，例如为20L。
如此，在循环处理过程中，通过以少量的洗涤剂和水生成高浓度的洗涤剂水，并反复进行通过泵12将该洗涤剂水均匀地浸透至洗涤物Q的循环处理以及浸透处理，从而能得到与使用大量高浓度的洗涤剂水进行浸洗的情况同等的清洗效果。另外，此处的高浓度是指例如2倍～3倍浓度的范围。
此外，控制部30也可以在至少一次浸透处理中，将第二排水阀22仅关闭一定时间，对洗涤桶4内蓄积洗涤剂水。由此，通过蓄积于洗涤桶4内的足量 的洗涤剂水，从而能高效地将洗涤物Q处理成与浸泡同等的状态，因此脱水清洗过程能实现清洗效果的进一步提高。需要说明的是，此时，可以使水箱13内所有的洗涤剂水蓄积于洗涤桶4内，由此，能进一步高效地实现与浸泡同等的状态。并且，在将第二排水阀22关闭的情况下的浸透处理中，第二排水阀22经过了上述的一定时间后打开，外桶3内以及洗涤桶4内的洗涤剂水返回水箱13。
此外，如上所述，在进行步骤S1的供水时，供水路6的吐出口6B将经过洗涤剂收容部8而带有洗涤剂的水朝向错开洗涤桶4内的洗涤物Q的位置吐出。也就是说，在进行循环浸透过程的供水时，带有洗涤剂收容部8的洗涤剂的水被以不直接打在洗涤物Q上的方式进行供给。由此，能抑制因溶于水之前的超高浓度的洗涤剂仅附着于洗涤物Q的表面的一部分而导致无法均匀地清洗洗涤物整体Q情况发生。
控制部30也可以根据洗涤桶4内的洗涤物Q的负荷量的大小来改变循环处理、浸透处理以及脱水处理各自的处理时间。具体而言，在洗涤物Q多而使得负荷量大的情况下，由于需要将大量的洗涤剂水浇至洗涤物Q将其浸透，因此控制部30通常将循环处理以及浸透处理各自的处理时间设定得较长。此外，由于浸透了大量洗涤剂水的洗涤物Q脱水费时，因此控制部30通常将脱水处理的处理时间也设定得较长。另一方面，在洗涤物Q少而使得负荷量小的情况下，由于只要将少量的洗涤剂水浇至洗涤物Q将其浸透就能得到足够的清洗效果，因此控制部30通常将循环处理以及浸透处理各自的处理时间设定得较短。此外，由于浸透了少量的洗涤剂水的洗涤物Q短时间就能脱水，因此控制部30通常将脱水处理的处理时间也设定得较短。由此，能按每个负荷量的大小执行最合适的循环浸透过程。因此，能实现脱水清洗过程的洗涤剂水带来的清洗效果的进一步的提高。
本发明并不限于以上所说明的实施方式，能在权利要求书所记载的范围内进行各种变更。
例如，在洗涤运转中，可以在脱水清洗过程之前实施相当于在脱水清洗过程中省略了脱水处理的循环浸透过程。在循环浸透过程中，在从供水开始直到经过了规定时间的期间内，反复进行循环处理和浸透处理。在该情况下，通过 高浓度的洗涤剂水，洗涤物Q被处理成与浸泡同等的状态，由此，由于预先使脏污从洗涤物Q浮出，因此能在此后的脱水清洗过程中高效地对洗涤物Q进行清洗。需要说明的是，由于在实施了循环浸透过程的情况下，处于在脱水清洗过程之前的阶段就已经生成了洗涤剂水的状态，因此可以省略脱水清洗过程中的步骤S1的供水，也可以在进行该供水时，将来自供水路6的吐出口6B的水直接浇至洗涤物Q。
此外，也可以在洗涤运转中省略正式洗涤过程，并在脱水清洗过程之后紧接着实施漂洗过程。在正式洗涤过程中，由于较大的机械力作用于洗涤物Q，因此洗涤物Q会受到损伤或洗涤物Q缠绕在一起，洗涤运转后难以取出。通过脱水清洗过程，产生损伤、缠绕的机械力难以作用于洗涤物Q。因此，当主要用脱水清洗过程对洗涤物Q进行洗涤时，能减低洗涤物Q的损伤、缠绕。在该情况下，在脱水清洗过程中，通过反复进行循环处理以及浸透处理，从而能以足量的洗涤剂水将洗涤物Q处理成与浸泡同等的状态。并且，在脱水处理中，由于洗涤剂水处于已在之前的浸透处理中返回水箱13的状态，因此能使洗涤桶4不受洗涤剂水的阻碍地高速旋转，将脏污从洗涤物Q中除去。因此，即使在省略了正式洗涤过程的情况下，也能发挥充分的清洗效果。
此外，虽然在上述的实施方式中，循环路11的一端部11A连接于排水路9(参照图1)，但是也可以直接连接于水箱13的下端部。
图4是第一变形例的洗衣机1的示意图。图5是第二变形例的洗衣机1的示意图。图6是第三变形例的洗衣机1的示意图。在图4～图6中，对与图1中已说明的部分相同的部分赋予相同的附图标记，并省略对该部分的说明。
作为用于在进行脱水清洗过程中的步骤S1的供水时将带有洗涤剂的水以不直接打在洗涤物Q上的方式进行供给的结构，如上所述，供水路6的吐出口6B如图1中粗实线箭头所示，朝向外桶3与洗涤桶4的间隙19也就是错开洗涤桶4内的洗涤物Q的位置吐出。作为该结构的变形例，可以举出第一变形例以及第二变形例。
在图4所示的第一变形例中，供水路6从洗涤剂收容部8经过外桶3的圆周壁3A与机壳2之间并向下侧Z2延伸，供水路6的另一端部6C连接于圆周壁3A的下端部。该情况下的供水路6是经过外桶3之外的流路，另一端部6C 的吐出口6B从横向Y面对外桶3与洗涤桶4的间隙19的下端部。另一方面，第一变形例的洗衣机1在洗涤剂收容部8包括从供水路6分支出来的分支路25。分支路25是从洗涤剂收容部8向下侧Z2延伸的流路，在其下端设有从上侧Z1面对洗涤桶4的出入口4D的供水口25A。在分支路25的中途设有供水阀26。在对第一变形例进行以下的说明时，为了便于说明，将供水阀7称为第一供水阀7，将供水阀26称为第二供水阀26。供水阀26的开闭由控制部30来进行控制。
在第一变形例的脱水清洗过程中，控制部30在进行步骤S1的供水时，在关闭了第二供水阀26的状态下，将第一供水阀7打开。由此，来自水龙头的水在经过洗涤剂收容部8而带有洗涤剂并流下至供水路6后，如粗实线箭头所示，从吐出口6B被供给至外桶3内比洗涤桶4的底壁4B还靠近下侧Z2的空间27。此时，吐出口6B将流过引导流路29的水朝向空间27也就是错开洗涤桶4内的洗涤物Q的位置吐出。由此，带有洗涤剂的水被以不直接打在洗涤物Q上的方式进行供给。另一方面，在进行脱水清洗过程之后的正式洗涤过程的供水的情况下，控制部30在关闭了第一供水阀7的状态下将第二供水阀26打开。由此，来自水龙头的水通过分支路25从供水口25A直接供给至洗涤桶4内。也就是说，初期的供水使用供水路6来进行，之后的供水使用分支路25来进行。
在图5所示的第二变形例中，供水路6的另一端部6C穿过外桶3的出入口3D，另一端部6C的吐出口6B从上侧Z1面对洗涤桶4的出入口4D。第二变形例的洗衣机1在洗涤桶4的内部设有引导部28。引导部28是遍及从洗涤桶4的圆周壁4A的上端部到下端部的范围沿轴线J在上下方向Z上延伸的导水槽状，其俯视剖面形成为向轴线J侧凸弯曲的圆弧状。引导部28以从轴线J侧覆盖圆周壁4A的圆周上的一个部位的方式固定于圆周壁4A。由此，在引导部28与圆周壁4A之间，形成有在上下方向Z上延伸的引导流路29。引导部28的上端部是形成为向轴线J侧膨出的碗状的接受部28A。引导流路29从接受部28A向上侧Z1露出。吐出口6B从上侧Z1与接受部28A对置配置。
在第二变形例的脱水清洗过程中，控制部30在进行步骤S1的供水时，将供水阀7打开。由此，来自水龙头的水经过洗涤剂收容部8而带有洗涤剂并经过供水路6，如粗实线箭头所示，从吐出口6B下落至引导部28的接受部28A。 由接受部28A接受的水在引导流路29中流下，从洗涤桶4的贯通孔4E漏向洗涤桶4外，并在外桶3内到达比洗涤桶4的底壁4B还要靠近下侧Z2的空间27。这时，吐出口6B将流过引导流路29的水朝向引导部28也就是错开洗涤桶4内的洗涤物Q的位置吐出。由此，带有洗涤剂的水被以不直接打在洗涤物Q上的方式进行供给。
在图6所示的第三变形例中，循环路11包括：从一端部11A延伸到另一端部11C并具吐水口11B的主流路11D、以及从主流路11D分支的分支流路11E。分支流路11E虽然在图6中从横向Y连接于外桶3的圆周壁3A的下端部，但是也可以取代外桶3而连接于水箱13。在主流路11D与分支流路11E的连接部分设有换向阀35。换向阀35是所谓的三通阀，连接于主流路11D的夹着换向阀35的两侧部分和分支流路11E。换向阀35通过由控制部30来控制其开闭，从而将循环路11中的洗涤剂水流切换至主流路11D或分支流路11E。
因此，循环处理通过将循环路11中的洗涤剂水流切换至主流路11D，从而能使洗涤剂水在洗涤桶4与循环路11之间循环。此外，通过在比循环处理还靠前的时间点等将循环路11中的洗涤剂水流切换至分支流路11E，从而循环路11中的洗涤剂水不到达洗涤桶4而是直接经由分支流路11E走捷径地进入外桶3或水箱13。由此，由于能提高洗涤剂水流过泵12的频率并促进由泵12的叶轮进行的洗涤剂水的搅拌，因此能高效地使洗涤剂溶于水，生成高浓度的洗涤剂水。因此，脱水清洗过程能通过高浓度的洗涤剂水来实现清洗效果的进一步提高。

Claims (6)

  1. 一种洗衣机，包括：
    外桶，可蓄水；
    洗涤桶，具有用于使水在所述洗涤桶与所述外桶之间往来的贯通孔和纵向延伸的轴线，收容洗涤物并收容于所述外桶内；
    电机，使所述洗涤桶旋转；
    水箱，连接于所述外桶，从所述外桶接收混有洗涤剂的洗涤剂水；
    循环路，从所述水箱内汲取洗涤剂水并将其从上侧注入所述洗涤桶内；
    泵，将所述水箱内的洗涤剂水摄入所述循环路并使其在所述循环路内上升；以及
    执行单元，执行包括脱水清洗过程的洗涤运转，所述脱水清洗过程反复进行循环处理、浸透处理以及脱水处理，其中，循环处理是通过驱动所述泵从而使所述水箱内的洗涤剂水在所述洗涤桶与所述循环路之间循环并将其浇至所述洗涤桶内的洗涤物；浸透处理是在所述循环处理之后停止所述泵的驱动并使洗涤剂水在所述洗涤桶内浸透洗涤物并返回至所述水箱；脱水处理是在所述浸透处理之后通过驱动所述电机而使所述洗涤桶旋转，从而对洗涤物进行脱水。
  2. 根据权利要求1所述的洗衣机，其中，
    所述执行单元在至少一次所述循环处理中驱动所述电机，使所述洗涤桶旋转。
  3. 根据权利要求1或2所述的洗衣机，其中，
    在所述水箱形成有排气孔，
    所述洗衣机包括排气管，所述排气管具有连接于所述排气孔的一端部和连接于所述外桶的上部的另一端部。
  4. 根据权利要求1～3中任一项所述的洗衣机，其中，
    包括：
    供水路，用于对所述洗涤桶进行供水；以及
    洗涤剂收容部，连接于所述供水路并收容洗涤剂，
    所述供水路具有：吐出口，将经过所述洗涤剂收容部并流过所述供水路的水朝向错开所述洗涤桶内的洗涤物的位置吐出。
  5. 根据权利要求1～4中任一项所述的洗衣机，其中，
    所述循环路包括：主流路，具有从上侧面向所述洗涤桶内的吐水口；以及分支流路，从所述主流路分支并连接于所述外桶或所述水箱，
    所述洗衣机包括：换向阀，将所述循环路中的洗涤剂水流切换至所述主流路或所述分支流路。
  6. 根据权利要求1～5中任一项所述的洗衣机，其中，
    包括：
    流路，连接所述外桶与所述水箱；以及
    阀，对所述流路进行开闭，
    所述执行单元在至少一次所述浸透处理中关闭所述阀，在所述洗涤桶内蓄积洗涤剂水。
PCT/CN2016/100892 2015-09-30 2016-09-29 洗衣机 WO2017054761A1 (zh)

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