WO2023284711A1 - 立式洗衣机 - Google Patents

立式洗衣机 Download PDF

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Publication number
WO2023284711A1
WO2023284711A1 PCT/CN2022/105081 CN2022105081W WO2023284711A1 WO 2023284711 A1 WO2023284711 A1 WO 2023284711A1 CN 2022105081 W CN2022105081 W CN 2022105081W WO 2023284711 A1 WO2023284711 A1 WO 2023284711A1
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WIPO (PCT)
Prior art keywords
tub
water
washing
overflow
inner tub
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PCT/CN2022/105081
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English (en)
French (fr)
Inventor
间宫春夫
伊藤弓恵
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
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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
Publication of WO2023284711A1 publication Critical patent/WO2023284711A1/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
    • 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 invention relates to a vertical washing machine.
  • a vertical washing machine described in Patent Document 1 below includes: an outer tub capable of storing water; a washing tub disposed in the outer tub to accommodate laundry; and a motor for rotating the washing tub.
  • the vertical washing machine performs a tub rotation process in any one of a washing process and a rinsing process after the washing process.
  • the tub rotation process the water in the tub is rotated so that the water in the tub rises between the tub and the tub and sprays the laundry in the tub from the inlet and outlet at the top of the tub.
  • the laundry on the entrance/exit side can also be washed by such water spraying from the upper side.
  • Patent Document 1 Japanese Patent Laid-Open No. 2020-5794
  • an overflow port is provided on the top of the outer tub, and an overflow channel is connected to the overflow port.
  • the water rising to the overflow port in the outer tub flows through the overflow channel from the overflow port and is discharged outside the machine.
  • the water supply process is performed at the initial stage and the water is stored in the outer tub to a high water level. Therefore, when the tub rotation process is performed in the first half of the water supply process just after the water supply process, the washing tub rotates. A portion of the water that rises is needlessly drained from the overflow and not used for sprinkling.
  • the bucket rotation process cannot be performed in the first half after the water supply treatment, but only in the second half of the process when the water level decreases to a certain level with washing and rinsing Executes bucket rotation processing. That is, due to the presence of the overflow, the timing at which the barrel rotation process is performed is restricted. In the tub rotation process performed in the second half, the amount of water sprayed into the washing tub from the upper side, that is, the amount of sprayed water, is small, so there is a limit to the improvement of washing performance.
  • the present invention has been made based on the above-mentioned background, and an object of the present invention is to provide a vertical washing machine capable of saving water and improving washing performance by spraying water on laundry from above.
  • the present invention is a vertical washing machine, comprising: a driving part generating torque; a washing tub having an outer tub and an inner tub; The overflow port at the position and the opening arranged at a position higher than the overflow port, the inner tub is provided with a through hole for allowing water to come and go between the inner tub and the outer tub and is opposite to the opening from the lower side.
  • the inner tub is arranged in the outer tub, the laundry is put into and taken out of the inner tub through the opening and the inlet, and the inner tub rotates under the torque of the driving part; the drainage channel, Connected to the drain port to discharge the water in the washing tub; the drain valve is to open and close the drainage channel; the overflow channel is connected to the overflow port to drain the water in the washing tub from the overflow a water stop valve, which opens and closes the overflow channel; and a control part, which executes tub rotation processing in at least one of a washing process and a rinsing process after the washing process, and the tub
  • the rotation process is a process of operating the driving unit to rotate the inner tub in a state where the drain valve closes the drain passage and water is accumulated in the washing tub, thereby causing the inner tub to rotate.
  • the water in the washing tub rises between the outer tub and the inner tub and sprays the laundry in the inner tub from the inlet and outlet, wherein the rotation of the inner tub in the tub rotation process During the process, the control unit keeps the overflow channel in a closed state through the water stop valve.
  • the present invention is characterized in that the vertical washing machine includes a water supply unit for supplying water into the washing tub, and the control unit executes water supply processing through the drain valve before the tub rotation processing. to close the drainage channel and store water in the washing tub through the water supply unit. During the water supply process, the control unit uses the water stop valve to keep the overflow channel at open state.
  • control unit opens the overflow passage through the water stop valve as the driving unit stops during the tub rotation process.
  • the present invention is characterized in that the vertical washing machine includes an actuator that operates both the drain valve and the water stop valve under the control of the control unit.
  • the tub rotation process is performed in at least any one of the washing process and the rinsing process.
  • the inner tub is rotated by receiving the torque of the drive unit while water is stored in the washing tub, whereby the water in the washing tub rises between the outer tub and the inner tub and flows from the inlet and outlet of the inner tub to the inside of the inner tub. Laundry spray.
  • the laundry on the entrance/exit side can also be washed by such water spraying from the upper side.
  • the overflow path connected to the overflow port of the outer tub is closed by the water stop valve, so that the water in the washing tub is discharged from the discharge path through the overflow path.
  • both the washing process and the rinsing process are not limited to the second half stage in which the water level in the washing tub drops along with washing, rinsing, etc., and even in the first half stage when the water level in the washing tub is high, it can be performed. Barrel rotation handle. If the tub rotation processing is performed in the first half, the amount of water sprayed on the laundry in the inner tub can be increased, thereby improving the washing performance.
  • the overflow path is opened by the water stop valve, so that the water reaching the overflow port can be guided from the overflow path to the drain path and discharged.
  • the overflow function can be enabled at such a timing that requires overflow during the water supply process, and the overflow function can be disabled at such a timing that does not require overflow during the rotation of the inner tub during the tub rotation process.
  • the overflow function can be enabled by opening the overflow path as the drive unit stops, that is, the water spraying to the laundry in the inner tub stops.
  • the water stop valve and the drain valve for opening and closing the drain passage can be operated by a common actuator.
  • Fig. 1 is a schematic longitudinal sectional view of a vertical washing machine according to an embodiment of the present invention.
  • Fig. 2 is a block diagram showing an electrical configuration of the vertical washing machine.
  • Fig. 3 is a flowchart showing a washing operation performed in the vertical washing machine.
  • Fig. 4 is a flowchart showing tub rotation processing during washing operation.
  • Fig. 5 is a schematic perspective view related to the upper part of the washing tub in the vertical washing machine.
  • Fig. 6 is a block diagram showing an electrical configuration of a vertical washing machine according to a modified example.
  • Fig. 1 is a schematic longitudinal sectional view of a vertical washing machine 1 according to an embodiment of the present invention.
  • the vertical direction in FIG. 1 is called the vertical direction Z of the upright washing machine 1, and among the vertical directions Z, the upper side is called the upper side Z1, and the lower side is called the lower side Z2.
  • the vertical washing machine 1 includes: a casing 2 constituting its shell, an outer tub 3 arranged in the casing 2, an inner tub 4 arranged in the outer tub 3, a pulsator 5 arranged in the inner tub 4, and an outer tub 3 arranged in the outer tub 3.
  • the motor 6 as an example of the driving part on the lower side Z2 and the electric clutch 7 for switching the transmission destination of the torque generated by the motor 6 .
  • the outer tub 3 and the inner tub 4 together constitute a washing tub 8 .
  • the box body 2 is made of metal, for example, and is formed in a box shape.
  • An opening 2B that communicates the inside and outside of the box 2 is formed on the upper surface 2A of the box 2 .
  • Door 10 for opening and closing opening 2B is provided on upper surface 2A.
  • a display operation unit 11 constituted by a liquid crystal operation panel or the like is provided around the opening 2B in the upper surface 2A.
  • a user of vertical washing machine 1 can select operating conditions related to washing operation performed in vertical washing machine 1 or instruct starting and stopping of washing operation to vertical washing machine 1 by operating display operation unit 11 . Information provided to the user is displayed on the display operation unit 11 .
  • the outer tub 3 is made of resin, for example, and is formed in a bottomed cylindrical shape.
  • the axis J of the tub 3 extends in the vertical direction Z through the center of the tub 3 .
  • the radial direction based on the axis J is referred to as the radial direction R
  • the circumferential direction around the axis J is referred to as the circumferential direction L.
  • the radial directions R the direction closer to the axis J is called radially inner R1
  • the direction farther away from the axis J is called radially outer R2.
  • the outer tub 3 has a substantially cylindrical peripheral wall 3A arranged along the vertical direction Z, a bottom wall 3B that blocks the hollow portion of the peripheral wall 3A from the lower side Z2, and radially inward along the upper end edge of the peripheral wall 3A.
  • An overflow port 3D penetrating through the peripheral wall 3A in the radial direction R is provided at the upper end portion of the peripheral wall 3A.
  • An opening 3E communicating with the hollow portion of the peripheral wall 3A from the upper side Z1 is provided inside the annular wall 3C. The opening 3E faces and communicates with the opening 2B of the case 2 from the lower side Z2.
  • a door 12 for opening and closing the opening 3E is provided on the annular wall 3C.
  • a guide surface 3F that surrounds the opening 3E and slopes obliquely downward is provided on the lower surface of the annular wall 3C.
  • the bottom wall 3B is formed in a disc shape extending substantially horizontally.
  • An insertion hole 3G is provided at the center of the bottom wall 3B, and a drain port 3H is provided at a radially outer side R2 of the bottom wall 3B than the insertion hole 3G.
  • the insertion hole 3G and the drain port 3H are in a state of penetrating the bottom wall 3B in the vertical direction Z.
  • overflow port 3D is arranged at a position higher than drain port 3H
  • opening 3E is arranged at a position higher than overflow port 3D.
  • a water supply channel 13 connected to a water tap is connected to the annular wall 3C of the tub 3 from the upper side Z1.
  • a water supply valve 14 is provided in the middle of the water supply path 13 .
  • the water supply valve 14 is constituted by, for example, a solenoid valve.
  • Water supply passage 13 and water supply valve 14 constitute water supply unit 15 that supplies water into washing tub 8 .
  • the water supply valve 14 is opened, the entire water supply passage 13 is opened by opening the middle of the water supply passage 13 .
  • the water supply valve 14 is closed, the water supply channel 13 is blocked in the middle by locking the water supply channel 13 in the middle.
  • the initial water supply valve 14 of the upright washing machine 1 is in a closed state when the power is just turned on.
  • One end of the drain path 16 is connected to the drain port 3H of the bottom wall 3B of the tub 3 .
  • a drain valve 17 is provided in the middle of the drain path 16 . When the drain valve 17 is opened, the entire drain passage 16 is opened by opening the middle of the drain passage 16 . The drain valve 17 shuts off the drain passage 16 halfway by blocking the drain passage 16 when it is closed. The drain valve 17 in the initial state is in a closed state.
  • the inner tub 4 is made of metal, for example, and is formed in a bottomed cylindrical shape slightly smaller than the outer tub 3, and can accommodate laundry Q inside.
  • the inner tub 4 is arranged in the outer tub 3 coaxially with the outer tub 3 .
  • the inner tub 4 housed in the outer tub 3 is rotatable around the axis J.
  • the inner tub 4 has a substantially cylindrical peripheral wall 4A arranged along the vertical direction Z, a bottom wall 4B closing the hollow portion of the peripheral wall 4A from the lower side Z2, and a radially inner side R1 along the upper end edge of the peripheral wall 4A. Protruding annular wall 4C.
  • the inner peripheral surface of the peripheral wall 4A is the inner peripheral surface of the inner tub 4 .
  • the peripheral wall 4A is surrounded by the peripheral wall 3A of the tub 3.
  • the bottom wall 4B is provided at the lower end of the inner tub 4 .
  • the annular wall 4C faces the annular wall 3C of the tub 3 from the lower side Z2.
  • An entrance and exit 4D are provided inside the annular wall 4C.
  • the inlet and outlet 4D are located at the upper end of the inner tub 4, exposing the hollow portion of the peripheral wall 4A to the upper side Z1.
  • the inlet and outlet 4D are in a state of facing and communicating with the opening 3E of the tub 3 from the lower side Z2. The user puts laundry Q into and out of the inner tub 4 from the upper side Z1 through the open opening 2B, the opening 3E, and the opening 4D.
  • the peripheral wall 4A and the bottom wall 4B of the inner tub 4 are provided with a plurality of through holes 4E, through which the water in the outer tub 3 passes between the outer tub 3 and the inner tub 4 and is also stored in the inner tub 4 . Therefore, the water level in the outer tub 3 is consistent with the water level in the inner tub 4 . It should be noted that the through hole 4E may be provided only in the bottom wall 4B and not in the peripheral wall 4A.
  • the bottom wall 4B of the inner tub 4 is formed in a disc shape, and extends substantially parallel to the bottom wall 3B of the outer tub 3 at an interval on the upper side Z1.
  • An insertion hole 4F penetrating through the bottom wall 4B is formed at a center position of the bottom wall 4B that coincides with the axis J.
  • the bottom wall 4B is provided with a tubular support shaft 18 that surrounds the insertion hole 4F and protrudes toward the lower side Z2 along the axis J.
  • the support shaft 18 is inserted through the insertion hole 3G of the bottom wall 3B of the outer tub 3 , and the lower end of the support shaft 18 is located on the lower side Z2 than the bottom wall 3B.
  • the pulsator 5 is formed in a disk shape with the axis J as a center, and is disposed on the bottom wall 4B inside the inner tub 4 .
  • the pulsator 5 is provided with a rotation shaft 19 extending from its center along the axis J to the lower side Z2.
  • the rotating shaft 19 is inserted through the hollow portion of the supporting shaft 18 , and the lower end of the rotating shaft 19 is located on the lower side Z2 than the bottom wall 3B of the tub 3 .
  • the motor 6 is an electric motor such as an inverter motor.
  • the motor 6 is disposed on the lower side Z2 of the tub 3 within the casing 2 .
  • the motor 6 has an output shaft 20 that rotates around an axis J, and outputs generated torque from the output shaft 20 .
  • the clutch 7 is interposed between the respective lower ends of the support shaft 18 and the rotating shaft 19 and the upper end of the output shaft 20 protruding from the motor 6 to the upper side Z1.
  • the clutch 7 uses a known transmission mechanism.
  • the clutch 7 selectively transmits the torque output from the output shaft 20 of the motor 6 to one or both of the support shaft 18 and the rotating shaft 19 .
  • the inner tub 4 receives the torque from the motor 6 and rotates about the axis J.
  • the pulsator 5 receives the torque from the motor 6 and rotates around the axis J.
  • the vertical washing machine 1 also includes an overflow channel 21, which has: one end 21A, connected to the overflow port 3D of the peripheral wall 3A; partially connected.
  • the other end 21B is arranged at a lower position than the one end 21A. If the water level in the washing tub 8 rises to the overflow port 3D, the water on the water surface side in the washing tub 8, that is, the water on the upper side Z1, falls from the overflow port 3D through the overflow channel 21 and is guided to the drainage channel 16. Exhaust.
  • the vertical washing machine 1 further includes a water stop valve 22 provided in the middle of the overflow path 21 .
  • a water stop valve 22 provided in the middle of the overflow path 21 .
  • the water stop valve 22 cuts off the overflow channel 21 in the middle by locking the overflow channel 21 when it is closed.
  • the water stop valve 22 in the initial state is in an open state.
  • FIG. 2 is a block diagram showing the electrical configuration of the vertical washing machine 1 .
  • Vertical washing machine 1 includes microcomputer 25 as an example of a control unit.
  • the microcomputer 25 is for example built in the casing 2, and includes: memory 27 such as CPU (central processing unit) 26, ROM (read only memory) or RAM (random access memory) and the timer 28 (referring to Fig. 1) of timing. .
  • the aforementioned motor 6 , clutch 7 , water supply valve 14 , drain valve 17 , and water stop valve 22 are electrically connected to a microcomputer 25 via a driving circuit 29 , and the aforementioned display operation unit 11 is also electrically connected to the microcomputer 25 .
  • the microcomputer 25 turns on the motor 6 to operate it or turns it off to stop it.
  • the microcomputer 25 can also control the rotation direction of the motor 6 . Therefore, the motor 6 can rotate forward or reversely.
  • the microcomputer 25 switches the transmission destination of the torque of the motor 6 to one or both of the inner tub 4 and the pulsator 5 by controlling the clutch 7 .
  • the microcomputer 25 controls the opening and closing of the water supply valve 14 , the drain valve 17 , and the water stop valve 22 .
  • the upright washing machine 1 includes a torque motor 30 that operates the drain valve 17 and an actuator 31 that is separately provided from the torque motor 30 to enable the water stop valve 22 to operate, the torque motor 30 and the actuator 31 and the drive circuit 29 connect. Therefore, the microcomputer 25 controls the opening and closing of the drain valve 17 by controlling the operation of the torque motor 30 , and controls the opening and closing of the water stop valve 22 by controlling the operation of the actuator 31 .
  • the microcomputer 25 receives the selection.
  • the microcomputer 25 controls the display content of the display operation unit 11 .
  • the vertical washing machine 1 further includes: a buzzer 32 electrically connected to the microcomputer 25 , a rotational speed reading device 33 and a water level detection unit 34 .
  • the microcomputer 25 notifies the user of the start and end of the washing operation by generating a predetermined sound through the buzzer 32 .
  • the rotation speed reading device 33 is a device for reading the rotation speed of the motor 6 , strictly speaking, a device for reading the rotation speed of the output shaft 20 of the motor 6 , and is composed of, for example, a Hall IC.
  • the rotational speed read by the rotational speed reading device 33 is input into the microcomputer 25 in real time.
  • the microcomputer 25 controls the duty ratio of the voltage applied to the motor 6 based on the input rotational speed, thereby controlling the motor 6 to rotate at a desired rotational speed.
  • the rotational speeds of inner tub 4 and pulsator 5 may be the same as the rotational speed of motor 6 , or may be a value obtained by multiplying the rotational speed of motor 6 by a predetermined constant such as a reduction ratio in clutch 7 .
  • Water level detector 34 is a water level sensor that detects the water level in washing tub 8 .
  • a pressure type water level sensor that detects the water level in the washing tub 8 based on the pressure in the outer tub 3 can be used.
  • the microcomputer 25 executes the washing operation by controlling the operations of the motor 6 , the clutch 7 , the water supply valve 14 , the drain valve 17 , and the water stop valve 22 .
  • the washing operation includes: a washing process of washing the laundry Q; a rinsing process of rinsing the laundry Q after the washing process; and a dehydration process of rotating the inner tub 4 to dehydrate the laundry Q after the rinsing process.
  • the vertical washing machine 1 may also be an integrated washer-dryer that performs a drying process of drying the laundry Q after the dehydration process.
  • the first rinsing process is called the first rinsing process
  • the second rinsing process is called the second rinsing process.
  • the rinsing process may not be performed multiple times but may be performed only once.
  • the microcomputer 25 When the user puts the laundry Q into the inner tub 4 and instructs to start the washing operation, the microcomputer 25 starts the washing operation. It should be noted that the user may also inject detergent into the inner tub 4 before and after inserting the laundry Q.
  • the microcomputer 25 detects the amount of laundry Q in the inner tub 4, that is, the load (step S1). As an example of load detection, the microcomputer 25 detects the load based on variations in the rotational speed of the motor 6 when the inner tub 4 is rotated stably at a low speed.
  • the microcomputer 25 determines the water level W of the water to be stored in the inner tub 4 by supplying water next based on the load detected just now (see FIG. 1 ). The relationship between the water level W and the load is obtained in advance through experiments or the like and stored in the memory 27 .
  • the microcomputer 25 supplies water to the washing tub 8 by continuously opening the water supply valve 14 while closing the drain valve 17 to close the drain passage 16 (step S2).
  • the microcomputer 25 stops the water supply by closing the water supply valve 14 .
  • the microcomputer 25 opens the water stop valve 22 to make the overflow channel 21 open.
  • the microcomputer 25 executes stirring processing in a state where water is stored in the washing tub 8 (step S3). Specifically, the microcomputer 25 switches the clutch 7 as necessary to transmit the torque of the motor 6 to the pulsator 5 , and then drives the motor 6 to rotate the pulsator 5 .
  • the pulsator 5 can be continuously rotated in the same direction, but in this embodiment, the motor 6 is driven intermittently so that the pulsator 5 alternately rotates forward and reverse at intervals of 1 second to 2 seconds. In the agitation process, the laundry Q in the inner tub 4 is agitated and cleaned by the reversing pulsator 5 .
  • the pulsator 5 may also be rotated, and a detergent may be easily dissolved in water by this.
  • the stains of the laundry Q are decomposed by the water-soluble detergent.
  • the microcomputer 25 executes the loosening process while continuing to store water in the inner tub 4 (step S4).
  • the microcomputer 25 reverses the pulsator 5 by intermittently driving the motor 6 under different conditions from the stirring process.
  • the pulsator 5 rotates forward and reverse alternately at an interval shorter than that of the stirring process by 0.5 seconds, and reverses at a rotation speed higher than that of the stirring process.
  • the unbalance of the laundry Q refers to the unbalance of the laundry Q in the inner tub 4, and is also referred to as unbalance.
  • the microcomputer 25 ends the release process when the predetermined release time has elapsed. In the cleaning process, the water level W immediately after the water supply process gradually decreases as each process in the cleaning process such as the stirring process and the loosening process proceeds.
  • the microcomputer 25 executes the barrel rotation process (step S5). Specifically, referring to the flowchart of FIG. 4, first, the microcomputer 25 switches the clutch 7 so that the torque of the motor 6 is transmitted to the inner tub 4 (step S51). Next, the microcomputer 25 closes the overflow channel 21 by closing the water stop valve 22 (step S52).
  • the microcomputer 25 checks whether or not the water level in the washing tub 8 has reached a predetermined tub rotation water level (step S53).
  • the tub rotation water level is a water level at which the water in the outer tub 3 does not overflow from the opening 3E when the inner tub 4 rotates next, and specifically, it is higher than half of the inner height of the inner tub 4 . If the water level in the inner bucket 4 is not at the bucket rotation water level (no in step S53), because the water level in the inner bucket 4 is higher than the bucket rotation water level, the microcomputer 25 will open the drain valve 17 to drain the washing bucket 8 (step S54 ).
  • step S53 If the water level in the washing tub 8 is in the state of reaching the tub rotation water level (yes in step S53), the microcomputer 25 closes the drainage channel 16 by closing the drain valve 17 and stores water to the tub rotation water level in the washing tub 8.
  • the motor 6 is operated under the state (step S55). Accordingly, the inner tub 4 rotates at a high speed of, for example, 200 rpm. Then, a vortex is generated in the outer tub 3, so that the water surface that has been horizontal until now is bent into a U-shape so that the central portion on the side of the axis J becomes lower and the outer peripheral portion of the radially outer R2 becomes higher (see double dots in FIG. 1 ). dash S). Thus, the water in washing tub 8 rises between peripheral wall 3A of outer tub 3 and peripheral wall 4A of inner tub 4 .
  • the rising water passes between the ribs 3I arranged in parallel on the lower surface of the annular wall 3C of the outer tub 3, falls while spirally turning, and sprays the laundry Q in the inner tub 4 from the inlet and outlet 4D of the inner tub 4.
  • shower (refer to the thick two-dot chain line in Figure 1 and Figure 5).
  • the guide surface 3F of the annular wall 3C of the outer tub 3 guides the water passing between the ribs 3I downward toward the inlet and outlet 4D (see FIG. 1 ).
  • the laundry Q on the side of the inlet and outlet 4D can be reliably cleaned by spraying water from the upper side Z1 realized by the rotation of the inner tub 4 . washing.
  • the washing is performed by spraying water, damage to the laundry Q can be reduced.
  • the tub rotation process may be executed only in the case of large-capacity washing in which the amount of laundry Q is greater than or equal to a predetermined value.
  • the tub rotation process is started with the laundry Q being unbalanced by the loosening process in step S4, the rotation speed of the inner tub 4 is smoothly increased to the start of sprinkling during the tub rotation process.
  • the barrel rotation process can be smoothly performed.
  • abnormal vibration of the inner tub 4 is less likely to occur during the tub rotation process, so it is not possible to stop the rotation of the inner tub 4 following the abnormal vibration to eliminate the deviation of the laundry Q in the inner tub 4 can be processed. Thereby, shortening of washing time can be aimed at.
  • the microcomputer 25 detects the magnitude of the deviation of the laundry Q in the inner tub 4, that is, the so-called eccentric load, while continuing to store water in the inner tub 4 (step S56). Specifically, as the variation of the laundry Q increases, the variation in the rotation speed of the motor 6 increases. Therefore, the microcomputer 25 detects the unevenness of the laundry Q in the inner tub 4 by reading the unevenness of the rotation speed of the motor 6 by the rotation speed reading device 33 . In this case, the time can be shortened compared with the case of detecting the magnitude of the unevenness of the laundry Q after the inner tub 4 has been drained once. It should be noted that, other known methods can also be used to detect the magnitude of the bias of the laundry Q. When the variation of the laundry Q is greater than or equal to a predetermined value, smooth rotation of the inner tub 4 may be affected.
  • step S56 when the predetermined barrel rotation time has elapsed from the start of rotation of the motor 6 in step S55 (Yes in step S57), the microcomputer 25 The motor 6 is stopped (step S58). Then, the microcomputer 25 opens the overflow channel 21 by opening the water stop valve 22 as the motor 6 stops (step S59). Thus, the barrel rotation processing ends.
  • the microcomputer 25 closes the water stop valve 22 to close the overflow channel 21 . Accordingly, water saving can be achieved by eliminating the waste of the water in the washing tub 8 being drained from the drain passage 16 through the overflow passage 21 . Furthermore, in this case, in the cleaning process, not only the second half stage in which the water level in the washing tub 8 falls along with the cleaning in the agitation process (step S3), but also the first half stage in which the water level in the washing tub 8 is high , For example, when the water supply process (step S2) has just been performed, the barrel rotation process can also be performed.
  • the water stop valve 22 can also be arranged near the overflow port 3D or even the overflow port 3D in the overflow channel 21 (see FIG. 1 ).
  • the microcomputer 25 opens the water stop valve 22 to open the overflow channel 21 . Accordingly, when the water level in washing tub 8 rises to reach overflow port 3D during the water supply process, the water that has reached overflow port 3D can be guided from overflow channel 21 to drain channel 16 to be discharged. That is to say, in the vertical washing machine 1, the overflow function can be enabled at such a timing that requires overflow during the water supply process, and the overflow can be enabled at such a timing that does not require overflow during the rotation of the inner tub 4 in the tub rotation process. Function is invalid.
  • the microcomputer 25 opens the overflow channel 21 by opening the water stop valve 22 as the motor 6 stops (step S59).
  • the overflow channel 21 can be opened to enable the overflow function as the motor 6 stops, that is, the water spraying on the laundry Q stops during the tub rotation process.
  • the overflow channel 21 may be always closed during the entire period of the tub rotation processing.
  • step S56 the microcomputer 25 confirms whether the current deviation measurement is the first deviation in the current barrel rotation process. detected (step S60).
  • the number of detected deviations in the current barrel rotation process is temporarily stored in the memory 27 .
  • step S60 If this deviation is detected for the first time (YES in step S60), the microcomputer 25 temporarily stops the rotation of the inner tub 4 by stopping the motor 6 (step S61). Then, the microcomputer 25 switches the clutch 7 so that the torque of the motor 6 is transmitted to the pulsator 5. On this basis, for example, the pulsator 5 is reversed under the same conditions as the loosening process in step S4, thereby loosening the pulsator 5.
  • the laundry Q in the inner tub 4 step S62). At this time, water is already stored in the inner tub 4, and the laundry Q is immersed in water to be easily loosened. Therefore, it is not necessary to supply water to loosen the laundry Q.
  • the microcomputer 25 may rotate the inner tub 4 instead of the pulsator 5, or may rotate both the inner tub 4 and the pulsator 5.
  • the inner tub 4 and the pulsator 5 may rotate only in one direction, or may be reversed as described above.
  • the microcomputer 25 switches the clutch 7 to transmit the torque of the motor 6 to the inner tub 4, and restarts the rotation of the inner tub 4 (step S55). That is, when a deviation is detected for the first time in the barrel rotation process, the rotation of the inner tub 4 is restarted after the deviation is eliminated by loosening. Thereby, the tub rotation process can be continued without restarting the tub rotation process even after the tub rotation process is temporarily stopped to eliminate unevenness of the laundry Q, and thus the washing time can be further shortened.
  • the microcomputer 25 stops the motor 6 (step S58), and opens the water stop valve 22 (step S59). , to abort barrel rotation processing. It should be noted that, in the barrel rotation processing, the processing related to the offset measurement (steps S56 and S60 to S62) may be omitted.
  • step S6 the cleaning process ends.
  • the microcomputer 25 rotates the inner tub 4 at high speed with the drain valve 17 open as the dehydration process after the washing process, that is, the intermediate dehydration process (step S7).
  • the laundry in the inner tub 4 is dehydrated by the centrifugal force generated by this high-speed rotation.
  • the water seeped from the laundry by dehydration is drained out of the machine from the drain passage 16 .
  • the microcomputer 25 switches the clutch 7 so that the torque of the motor 6 is not transmitted to the inner tub 4 to stop the motor 6, so the inner tub 4 performs inertial rotation.
  • the microcomputer 25 closes the drain valve 17.
  • the microcomputer 25 executes shower rinsing (step S8). Specifically, the microcomputer 25 intermittently opens the water supply valve 14 in a state where the drain valve 17 is closed, so as to spray water into the inner tub 4 . In this state, the microcomputer 25 rotates the inner tub 4 at a low speed of, for example, 30 rpm so as to spray the laundry Q over various parts. Thereby, the laundry Q in the inner tub 4 is rinsed without dead space. After that, the microcomputer 25 executes the same intermediate dehydration process as that of step S7 (step S9). It should be noted that each intermediate dehydration process can be regarded as a part of the subsequent rinsing process.
  • the microcomputer 25 executes the second rinsing process.
  • the content of the second rinsing process is the same as that of the washing process except that no detergent is present.
  • the microcomputer 25 supplies water in the same manner as in step S2 (step S10), it agitates and rinses the laundry Q in the same manner as in step S3 (step S11), and loosens the laundry Q in the same manner as in step S4. (Step S12), execute barrel rotation processing similarly to Step S5 (Step S13). Then, when the microcomputer 25 agitates and rinses the laundry Q in the same manner as in step S11 (step S14), the second rinsing process ends.
  • the effects obtained by the tub rotation process in the washing process can also be obtained by the tub rotation process in the second rinsing process. Therefore, for example, in the first half of the second rinsing process when the water level in the washing tub 8 is high, for example, when the water supply processing (step S10) has just been performed, the tub rotation processing (step S13) can also be performed by closing the water stop valve 22. , so the barrel rotation process can be performed in the first half stage.
  • the tub rotation processing step S13
  • the microcomputer 25 executes the final dehydration process similar to the intermediate dehydration process (step S15).
  • the rotation conditions of the inner tub 4 may also be different, especially, the highest rotational speed of the inner tub 4 in the final dehydration process is higher than that in the intermediate dehydration process.
  • agitation treatment, debonding treatment, and tub rotation treatment are all performed in both the washing process and the second rinsing process in the aforementioned embodiments, they may be performed only in one of the washing process and the second rinsing process. Execution can also be performed during the first rinsing process.
  • the contents of the tub rotation processing in the washing process (step S5) and the tub rotation processing in the second rinsing process (step S13) may be the same as described above or may be different.
  • one or both of the agitation process and the debonding process may be omitted.
  • FIG. 6 is a block diagram showing an electrical configuration of a vertical washing machine 1 according to a modified example.
  • the same reference numerals are assigned to the same parts as those described so far, and descriptions of the parts are omitted.
  • the upright washing machine 1 includes an actuator 41 that operates both the drain valve 17 and the water stop valve 22, and the torque motor 30 (refer to FIG. 2 ) that operates the drain valve 17 and the actuator 41 that operates the water stop valve 22 may be omitted.
  • Actuator 31 (refer to FIG. 2 ).
  • the actuator 41 is composed of a two-stage torque motor or the like, and operates both the drain valve 17 and the water stop valve 22 under the control of the microcomputer 25 . Specifically, the actuator 41 can collectively open and close both the drain valve 17 and the water stop valve 22 by operating in two stages from the disconnected state, or selectively open and close only the drain valve 17 and the water stop valve. One of 22. In this way, the drain valve 17 and the water stop valve 22 can be operated by the common actuator 41 .
  • vertical washing machine 1 may include three-way valve 42 (see FIG. 1 ) which also serves as both drain valve 17 and water stop valve 22 .
  • the three-way valve 42 in this case is constituted by, for example, an electromagnetic valve.
  • the three-way valve 42 is arranged at a connection portion connected to the other end 21B of the overflow channel 21 in the drain channel 16 .
  • the three-way valve 42 can allow the drainage from the overflow channel 21 to the outside of the machine under the state of stopping the drainage from the water outlet 3H, or allow the drainage from the water outlet 3H to the outside of the machine under the state of stopping the drainage from the overflow channel 21, or collectively stop or Drainage is allowed uniformly from one of the drain port 3H and the overflow path 21 .
  • the axis J of the inner tub 4 in the vertical washing machine 1 is arranged to extend vertically along the vertical direction Z in the above-mentioned embodiment (see FIG. Configuration structure.

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Abstract

本发明提供一种立式洗衣机，其能针对从上侧向洗涤物洒水的处理谋求节水和洗涤性能的提高。立式洗衣机(1)包括：洗涤桶(8)，具有设有溢水口(3D)的外桶(3)和配置于外桶(3)内的内桶(4)；排水路(16)，排出洗涤桶(8)内的水；溢水路(21)，将洗涤桶(8)内的水从溢水口(3D)导向排水路(16)；止水阀(22)，对溢水路(21)进行开闭；以及微型计算机(25)。微型计算机(25)在清洗过程和清洗过程后的漂洗过程中的至少任一个中执行桶旋转处理，该桶旋转处理是如下的处理：在洗涤桶(8)内蓄有水的状态下使内桶(4)旋转，由此使洗涤桶(8)内的水在外桶(3)与内桶(4)之间上升而从内桶(4)的出入口(4D)向内桶(4)内的洗涤物(Q)喷淋，在桶旋转处理中的内桶(4)的旋转过程中，通过止水阀(22)来使溢水路(21)处于关闭的状态。

Description

立式洗衣机 技术领域
本发明涉及一种立式洗衣机。
背景技术
下述专利文献1中记载的立式洗衣机包括：外桶，可蓄水；洗涤桶，配置于外桶内，容纳洗涤物；以及马达，使洗涤桶旋转。立式洗衣机在清洗过程和清洗过程后的漂洗过程中的任一过程中执行桶旋转处理。在桶旋转处理中，蓄有水的洗涤桶旋转，由此外桶内的水在外桶与洗涤桶之间上升而从洗涤桶的上端的出入口向洗涤桶内的洗涤物喷淋。通过这样的来自上侧的洒水，出入口侧的洗涤物也能洗涤。
现有技术文献
专利文献
专利文献1：日本特开2020－5794号公报
虽然专利文献1中并未公开，但在普通立式洗衣机中，在外桶的上部设有溢水口，在溢水口连接有溢水路。在外桶内上升至溢水口的水从溢水口流过溢水路而排出至机外。在清洗过程、漂洗过程中，在初始阶段执行供水处理而在外桶内蓄水至较高的水位，因此当在刚进行了供水处理的前半阶段执行桶旋转处理时，随着洗涤桶的旋转而上升的一部分水会从溢水口无谓地排出而未用于洒水。因此，在重视节水的情况下，在清洗过程和漂洗过程中均在供水处理后的前半阶段无法执行桶旋转处理，而只能在水位随着清洗、漂洗而降低至一定程度的后半阶段执行桶旋转处理。就是说，由于溢水口的存在，执行桶旋转处理的定时受到制约。在后半阶段执行的桶旋转处理中，从上侧向洗涤桶内喷淋的水的量也就是洒水量少，因此洗涤性能的提高存在极限。
发明内容
发明所要解决的问题
本发明是基于上述背景而完成的，其目的在于提供一种立式洗衣机，其能针对从上侧向洗涤物洒水的处理谋求节水和洗涤性能的提高。
用于解决问题的方案
本发明是一种立式洗衣机，包括：驱动部，产生转矩；洗涤桶，具有外桶和内桶，所述外桶可蓄水，并设有排水口、配置于比所述排水口高的位置的溢水口以及配置于比所述溢水口高的位置的开口，所述内桶设有用于使水在所述内桶与所述外桶之间往来的贯通孔和从下侧与所述开口对置的出入口，所述内桶配置于所述外桶内，洗涤物经由所述开口和所述出入口投入取出于所述内桶，所述内桶接受所述驱动部的转矩而进行旋转；排水路，连接于所述排水口，排出所述洗涤桶内的水；排水阀，对所述排水路进行开闭；溢水路，连接于所述溢水口，将所述洗涤桶内的水从所述溢水口导向所述排水路；止水阀，对所述溢水路进行开闭；以及控制部，在清洗过程和所述清洗过程后的漂洗过程中的至少任一个中执行桶旋转处理，所述桶旋转处理是如下的处理：在由所述排水阀关闭了所述排水路而向所述洗涤桶内蓄留了水的状态下，使所述驱动部工作从而使所述内桶旋转，由此使所述洗涤桶内的水在所述外桶与所述内桶之间上升而从所述出入口向所述内桶内的洗涤物喷淋，其中，在所述桶旋转处理中的所述内桶的旋转过程中，所述控制部通过所述止水阀来使所述溢水路处于关闭的状态。
此外，本发明的特征在于，所述立式洗衣机包括向所述洗涤桶内供水的供水部，所述控制部在所述桶旋转处理之前执行供水处理，所述供水处理是通过所述排水阀来关闭所述排水路并通过所述供水部来向所述洗涤桶内蓄水的处理，在所述供水处理的过程中，所述控制部通过所述止水阀来使所述溢水路处于打开的状态。
此外，本发明的特征在于，所述控制部在所述桶旋转处理中随着所述驱动部的停止而通过所述止水阀来打开所述溢水路。
此外，本发明的特征在于，所述立式洗衣机包括致动器，所述致动器通过所述控制部的控制来使所述排水阀和所述止水阀这双方工作。
发明效果
根据本发明，在立式洗衣机中，在清洗过程和漂洗过程的至少任一个中执行桶旋转处理。在桶旋转处理中，在洗涤桶中蓄有水的状态下，内桶接受驱动部的转矩而旋转，由此洗涤桶内的水在外桶与内桶之间上升而从内桶的出入口向内桶内的洗涤物喷淋。通过这样的来自上侧的洒水，出入口侧的洗涤物也能洗涤。并且，在桶旋转处理中的内桶的旋转过程中，连接于外桶的溢水口的溢水路处于被止水阀关闭的状态，因此能通过消除洗涤桶内的水经过溢水路从排出路排出的浪费来谋求节水。进而，在该情况下，在清洗过程和漂洗过程中均不限于洗涤桶内的水位随着清洗、漂洗等而下降的后半阶段，即使在洗涤桶内的水位高的前半阶段，也能执行桶旋转处理。若在前半阶段执行桶旋转处理，则能增加向内桶内的洗涤物的洒水量，因此能够谋求洗涤性能的提高。
此外，根据本发明，在桶旋转处理之前的供水处理的过程中，溢水路处于由止水阀打开的状态，因此能将到达溢水口的水从溢水路导向排水路来排出。就是说，在立式洗衣机中，能在供水处理的过程中这样的需要溢水的定时使溢水功能有效，能在桶旋转处理中的内桶的旋转过程中这样的不需要溢水的定时使溢水功能无效。
此外，根据本发明，在桶旋转处理中，能随着驱动部的停止也就是向内桶内的洗涤物的洒水的停止而打开溢水路来使溢水功能有效。
此外，根据本发明，能通过共同的致动器来使止水阀和对排水路进行开闭的排水阀工作。
附图说明
图1是本发明的一个实施方式的立式洗衣机的示意性纵剖视图。
图2是表示立式洗衣机的电气结构的框图。
图3是表示立式洗衣机中执行的洗涤运转的流程图。
图4是表示洗涤运转中的桶旋转处理的流程图。
图5是与立式洗衣机中洗涤桶的上部有关的示意性立体图。
图6是表示变形例的立式洗衣机的电气结构的框图。
附图标记说明
1：立式洗衣机；3：外桶；3D：溢水口；3E：开口；3H：排水口；4：内桶；4D：出入口；4E：贯通孔；6：马达；8：洗涤桶；15：供水部；16：排水路；17：排水阀；21：溢水路；22：止水阀；25：微型计算机；41：致动器；Q：洗涤物；Z2：下侧。
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是本发明的一个实施方式的立式洗衣机1的示意性纵剖视图。将图1中的上下方向称为立式洗衣机1的上下方向Z，上下方向Z当中，将上侧称为上侧Z1，将下侧称为下侧Z2。立式洗衣机1包括：构成其外壳的箱体2、配置于箱体2内的外桶3、配置于外桶3内的内桶4、配置于内桶4内的波轮5、配置于外桶3的下侧Z2的作为驱动部的一个例子的马达6以及对马达6所产生的转矩的传递目标进行切换的电动的离合器7。外桶3和内桶4一起构成洗涤桶8。
箱体2例如为金属制，形成为箱状。在箱体2的上表面2A形成有使箱体2的内外连通的开口2B。在上表面2A设有对开口2B进行开闭的门10。在上表面2A中的开口2B的周围设有由液晶操作面板等构成的显示操作部11。立式洗衣机1的用户可以通过操作显示操作部11来选择与立式洗衣机1中执行的洗涤运转相关的运转条件或对立式洗衣机1指示洗涤运转的开始、停止等。显示操作部11中显示提供给用户的信息。
外桶3例如为树脂制，形成为有底圆筒状。外桶3的轴线J穿过外桶3的中心沿上下方向Z延伸。以下，将以轴线J为基准的径向称为径向R，将绕轴线J的周向称为周向L。径向R当中，将靠近轴线J的方向称为径向内侧R1，将远离轴线J的方向称为径向外侧R2。
外桶3具有：沿着上下方向Z配置的大致圆筒状的圆周壁3A、从下侧Z2堵住圆周壁3A的中空部分的底壁3B以及沿着圆周壁3A的上端缘向径向内侧R1突出的环状的环状壁3C。在圆周壁3A的上端部设有沿径向R贯通圆周壁 3A的溢水口3D。在环状壁3C的内侧设有从上侧Z1与圆周壁3A的中空部分连通的开口3E。开口3E处于从下侧Z2与箱体2的开口2B对置并连通的状态。
在环状壁3C设有对开口3E进行开闭的门12。在环状壁3C的下表面设有将开口3E包边并向斜下侧倾斜的引导面3F。底壁3B形成为大致水平地延伸的圆板状。在底壁3B的圆心位置设有插通孔3G，在底壁3B的比插通孔3G靠径向外侧R2处设有排水口3H。插通孔3G和排水口3H处于沿上下方向Z贯通底壁3B的状态。在外桶3中，溢水口3D配置于比排水口3H高的位置，开口3E配置于比溢水口3D高的位置。
在外桶3的环状壁3C，从上侧Z1连接有与自来水的龙头连接的供水路13。在供水路13的中途设有供水阀14。供水阀14例如由电磁阀构成。供水路13和供水阀14构成向洗涤桶8内供水的供水部15。供水阀14在打开时通过打开供水路13的中途来使供水路13的整体开通。供水阀14在关闭时通过锁闭供水路13的中途而在中途切断供水路13。立式洗衣机1刚接通电源的初始状态的供水阀14处于关闭的状态。
在外桶3的底壁3B的排水口3H连接有排水路16的一端。在排水路16的中途设有排水阀17。排水阀17在打开时通过打开排水路16的中途而使排水路16的整体开通。排水阀17在关闭时通过锁闭排水路16的中途而在中途切断排水路16。初始状态的排水阀17处于关闭的状态。
当在排水阀17关闭的状态下打开供水阀14时，通过从供水路13向外桶3内供水，向外桶3内也就是洗涤桶8内蓄水。当供水阀14关闭时，供水停止。当排水阀17打开时，洗涤桶8内的水经过排水路16向机外也就是箱体2之外排出。
内桶4例如为金属制，形成为比外桶3小一圈的有底圆筒状，能在内部容纳洗涤物Q。内桶4以与外桶3同轴的方式配置于外桶3内。容纳于外桶3内的状态的内桶4能以轴线J为中心旋转。内桶4具有：沿着上下方向Z配置的大致圆筒状的圆周壁4A、从下侧Z2堵住圆周壁4A的中空部分的底壁4B以及沿着圆周壁4A的上端缘向径向内侧R1突出的环状的环状壁4C。
圆周壁4A的内周面是内桶4的内周面。圆周壁4A处于由外桶3的圆周壁 3A包围的状态。底壁4B设于内桶4的下端。环状壁4C处于从下侧Z2与外桶3的环状壁3C对置的状态。在环状壁4C的内侧设有出入口4D。出入口4D位于内桶4的上端，使圆周壁4A的中空部分向上侧Z1暴露。出入口4D处于从下侧Z2与外桶3的开口3E对置并连通的状态。用户从上侧Z1经由打开的开口2B、开口3E以及出入口4D将洗涤物Q投入取出于内桶4。
在内桶4的圆周壁4A和底壁4B设有多个贯通孔4E，外桶3内的水经由贯通孔4E在外桶3与内桶4之间往来，也蓄留于内桶4内。因此，外桶3内的水位与内桶4内的水位一致。需要说明的是，贯通孔4E也可以仅设于底壁4B而不设于圆周壁4A。
内桶4的底壁4B形成为圆板状，在上侧Z1隔开间隔地与外桶3的底壁3B大致平行地延伸。在底壁4B的与轴线J一致的圆心位置形成有贯通底壁4B的插通孔4F。在底壁4B设有包围插通孔4F且沿着轴线J向下侧Z2伸出的管状的支承轴18。支承轴18插通于外桶3的底壁3B的插通孔3G，支承轴18的下端部位于比底壁3B靠下侧Z2处。
波轮5形成为以轴线J为圆心的圆盘状，在内桶4内配置于底壁4B上。在波轮5的面向内桶4的出入口4D的上表面，设有隆起并呈放射状地配置的多个隆起部5A。波轮5设有从其圆心沿着轴线J向下侧Z2延伸的旋转轴19。旋转轴19插通于支承轴18的中空部分，旋转轴19的下端部位于比外桶3的底壁3B靠下侧Z2处。
马达6是变频马达等电动马达。马达6在箱体2内配置于外桶3的下侧Z2。马达6具有以轴线J为中心旋转的输出轴20，将产生的转矩从输出轴20输出。
离合器7介于支承轴18和旋转轴19各自的下端部与从马达6向上侧Z1突出的输出轴20的上端部之间。离合器7使用公知的传递机构。离合器7将马达6从输出轴20输出的转矩选择性地传递给支承轴18和旋转轴19的一方或双方。当来自马达6的转矩传递至支承轴18时，内桶4接受马达6的转矩而绕轴线J旋转。当来自马达6的转矩传递至旋转轴19时，波轮5接受马达6的转矩而绕轴线J旋转。
立式洗衣机1还包括溢水路21，该溢水路21具有：一端21A，与圆周壁 3A的溢水口3D连接；以及另一端21B，与排水路16中的比排水阀17远离排水口3H的下游部分相连。另一端21B配置于比一端21A低的位置。若洗涤桶8内的水位上升至溢水口3D，则洗涤桶8内的水面侧也就是上侧Z1的水从溢水口3D经过溢水路21落下而被导向排水路16，经过排水路16而向机外排出。
立式洗衣机1还包括设于溢水路21的中途的止水阀22。止水阀22在打开时通过打开溢水路21的中途来使溢水路21的整体开通。止水阀22在关闭时通过锁闭溢水路21的中途而在中途切断溢水路21。初始状态的止水阀22处于打开的状态。
图2是表示立式洗衣机1的电气结构的框图。立式洗衣机1包括作为控制部的一个例子的微型计算机25。微型计算机25例如内置于箱体2内，包括：CPU(中央处理器)26、ROM(只读存储器)或RAM(随机存取存储器)等存储器27以及计时用的计时器28(参照图1)。
前述的马达6、离合器7、供水阀14、排水阀17以及止水阀22分别例如经由驱动电路29与微型计算机25电连接，前述的显示操作部11也与微型计算机25电连接。微型计算机25使马达6接通来使其工作或使其断开来使其停止。微型计算机25还能控制马达6的旋转方向。因此，马达6能正转或逆转。微型计算机25通过控制离合器7来将马达6的转矩的传递目标切换为内桶4和波轮5的一方或两方。
微型计算机25控制供水阀14、排水阀17以及止水阀22的开闭。具体而言，立式洗衣机1包括使排水阀17工作的力矩马达30和与力矩马达30分开设置来使止水阀22工作的致动器31，力矩马达30和致动器31与驱动电路29连接。因此，微型计算机25通过控制力矩马达30的动作来控制排水阀17的开闭，并通过控制致动器31的动作来控制止水阀22的开闭。
当用户操作显示操作部11来针对运转条件等进行了选择时，微型计算机25接收该选择。微型计算机25控制显示操作部11的显示内容。
立式洗衣机1还包括：与微型计算机25电连接的蜂鸣器32、转速读取装置33以及水位检测部34。微型计算机25通过在蜂鸣器32中产生规定的声音来通知用户洗涤运转的开始、结束等。
转速读取装置33是读取马达6的转速的装置，严格来说是读取马达6的输出轴20的转速的装置，例如由霍尔IC构成。转速读取装置33所读取到的转速被实时输入微型计算机25。微型计算机25基于所输入的转速来控制施加给马达6的电压的占空比，由此控制马达6以希望的转速旋转。需要说明的是，内桶4和波轮5各自的转速既可以与马达6的转速相同，也可以是离合器7中的减速比等规定的常数乘以马达6的转速而得到的值。
水位检测部34是检测洗涤桶8内的水位的水位传感器。作为水位检测部34的一个例子，可以采用基于外桶3内的压力来检测洗涤桶8内的水位的压力式水位传感器。
微型计算机25通过控制马达6、离合器7、供水阀14、排水阀17以及止水阀22的动作来执行洗涤运转。洗涤运转包括：清洗过程，清洗洗涤物Q；漂洗过程，在清洗过程之后漂洗洗涤物Q；以及脱水过程，在漂洗过程之后使内桶4旋转来将洗涤物Q脱水。需要说明的是，立式洗衣机1也可以是在脱水过程之后还执行烘干洗涤物Q的烘干过程的洗干一体机。在本实施方式中，执行两次漂洗过程，将第一次漂洗过程称为第一漂洗过程，将第二次漂洗过程称为第二漂洗过程。漂洗过程也可以不执行多次而仅执行一次。
当用户将洗涤物Q投入内桶4内并指示开始洗涤运转时，微型计算机25开始洗涤运转。需要说明的是，用户也可以在投入洗涤物Q的前后将洗涤剂投入至内桶4内。参照图3的流程图，首先，微型计算机25检测内桶4内的洗涤物Q的量也就是负荷量(步骤S1)。作为负荷量检测的一个例子，微型计算机25根据使内桶4低速地稳定旋转时的马达6的转速的不均来检测负荷量。微型计算机25基于刚才检测到的负荷量来确定接下来要进行供水来向内桶4内蓄留的水的水位W(参照图1)。水位W与负荷量的关系通过实验等预先求出并存储于存储器27。
然后，作为清洗过程的初始阶段即供水处理，微型计算机25在通过关闭排水阀17来关闭了排水路16的状态下，通过持续地打开供水阀14来向洗涤桶8内供水(步骤S2)。由此，水蓄于洗涤桶8内而水位上升。当洗涤桶8内的水位上升至刚才确定的水位W时，微型计算机25通过关闭供水阀14来停止供水。由此，供水处理结束。在供水处理的过程中，微型计算机25通过打开止水阀22 来使溢水路21处于打开的状态。
接着，在洗涤桶8内蓄有水的状态下，微型计算机25执行搅拌处理(步骤S3)。具体而言，微型计算机25根据需要来切换离合器7以便将马达6的转矩传递给波轮5，之后通过驱动马达6来使波轮5旋转。波轮5可以向同一方向连续旋转，但在本实施方式，通过马达6的间歇驱动，波轮5以反复间隔1秒～2秒交替正转和逆转的方式进行反转。在搅拌处理中，内桶4内的洗涤物Q通过反转的波轮5被搅拌清洗。需要说明的是，也可以是，在步骤S2中的供水处理的过程中，波轮5也旋转，由此，洗涤剂易溶于水。通过溶于水的洗涤剂，洗涤物Q的污渍被分解。当经过规定的搅拌时间时，微型计算机25结束搅拌处理。
在搅拌处理之后，微型计算机25在继续向内桶4内蓄水的状态下执行松解处理(步骤S4)。在松解处理中，微型计算机25通过以与搅拌处理不同的条件间歇驱动马达6来使波轮5反转。在本实施方式中，作为一个例子，波轮5以反复地以比搅拌处理时短0.5秒的间隔交替正转和逆转的方式，以比搅拌处理时高的转速反转。由此，在内桶4内浸于水中的洗涤物Q通过反转的波轮5被松解。因此，洗涤物Q的偏倚消除。洗涤物Q的偏倚是指内桶4内的洗涤物Q的偏置，也称为不平衡。当经过规定的松解时间时，微型计算机25结束松解处理。在清洗过程中，刚进行了供水处理时的水位W随着搅拌处理、松解处理这样的清洗过程中的各处理的进行而逐渐降低。
在松解处理之后，微型计算机25执行桶旋转处理(步骤S5)。具体而言，参照图4的流程图，首先，微型计算机25切换离合器7以使马达6的转矩传递给内桶4(步骤S51)。接着，微型计算机25通过关闭止水阀22来关闭溢水路21(步骤S52)。
接着，微型计算机25确认是否处于洗涤桶8内的水位到达规定的桶旋转水位的状态(步骤S53)。桶旋转水位是指接下来在内桶4旋转时外桶3内的水不会从开口3E溢出的程度的水位，具体而言，高于内桶4的内部高度的一半。若内桶4内的水位不处于桶旋转水位(步骤S53中为否)，由于内桶4内的水位高于桶旋转水位，因此微型计算机25会打开排水阀17来进行洗涤桶8的排水(步骤S54)。
若洗涤桶8内的水位处于到达桶旋转水位的状态(步骤S53中为是)，则 微型计算机25在通过关闭排水阀17来关闭了排水路16而向洗涤桶8内蓄水至桶旋转水位的状态下使马达6工作(步骤S55)。由此，内桶4以例如200rpm高速旋转。于是，外桶3内产生涡旋，因此至今为止呈水平的水面以轴线J侧的中央部变低且径向外侧R2的外周部变高的方式弯曲成U字状(参照图1的双点划线S)。由此，洗涤桶8内的水在外桶3的圆周壁3A与内桶4的圆周壁4A之间上升。
上升的水经过以并列的方式设于外桶3的环状壁3C的下表面的肋3I之间，一边螺旋状地回转一边落下，从内桶4的出入口4D向内桶4内的洗涤物Q喷淋(参照图1和图5的粗的双点划线)。需要说明的是，外桶3的环状壁3C的引导面3F将经过肋3I之间的水向下引导向出入口4D(图1参照)。
在供水处理后的状态下，即使洗涤物Q的量多到即将从水面露出的程度，通过由内桶4的旋转而实现的来自上侧Z1的洒水，出入口4D侧的洗涤物Q也能可靠地洗涤。此外，若是由洒水实现的洗涤，则能减少对洗涤物Q的损伤。需要说明的是，也可以只在洗涤物Q的量为规定以上的大容量洗涤的情况下执行桶旋转处理。
由于在通过步骤S4的松解处理事先消除了洗涤物Q的偏倚的状态下开始桶旋转处理，因此在桶旋转处理中，内桶4的转速顺畅地增大至开始洒水的转速。由此，能顺利地实施桶旋转处理。此外，通过事先进行的松解处理，在桶旋转处理的过程中不易产生内桶4的异常振动，因此尽量不实施随着异常振动而中止内桶4的旋转来消除内桶4内的洗涤物Q的偏倚的处理即可。由此，能够谋求洗涤时间的缩短。
在桶旋转处理中，微型计算机25在继续向内桶4蓄水的状态下检测内桶4内的洗涤物Q的偏倚的大小即所谓的偏心载荷(步骤S56)。具体而言，当洗涤物Q的偏倚变大时，马达6的转速的不均变大。因此，微型计算机25通过由转速读取装置33读取马达6的转速的不均来检测内桶4内的洗涤物Q的偏倚。在该情况下，与一度对内桶4进行过排水后检测洗涤物Q的偏倚的大小的情况相比，能够谋求时间缩短。需要说明的是，也可以通过其他公知的方法来检测洗涤物Q的偏倚的大小。当洗涤物Q的偏倚为规定以上的大小时，会有影响内桶4的顺利旋转之虞。
在未检测到规定以上大小的偏倚的情况下(步骤S56中为否)，当从步骤S55中的马达6的旋转开始起经过规定的桶旋转时间时(步骤S57中为是)，微型计算机25使马达6停止(步骤S58)。然后，微型计算机25随着马达6的停止而通过打开止水阀22来打开溢水路21(步骤S59)。由此，桶旋转处理结束。
如上所述，在桶旋转处理中的步骤S52至S59之间也就是内桶4的旋转过程中，微型计算机25通过关闭止水阀22来使溢水路21处于关闭的状态。由此，能够通过消除洗涤桶8内的水经过溢水路21从排水路16排出的浪费来谋求节水。进而，在该情况下，在清洗过程中，不限于洗涤桶8内的水位随着搅拌处理(步骤S3)中的清洗等而下降的后半阶段，在洗涤桶8内的水位高的前半阶段、例如刚进行了供水处理(步骤S2)时，也能执行桶旋转处理。若在清洗过程的前半阶段执行桶旋转处理，则能增加向内桶4内的洗涤物Q的洒水量，因此能够谋求洗涤性能、严格来说清洗性能的提高。需要说明的是，为了进一步减少内桶4旋转过程中水从洗涤桶8内向溢水路21的排出，止水阀22也可以配置于溢水路21中溢水口3D的附近甚至溢水口3D(参照图1)。
另一方面，如上所述，在桶旋转处理之前的供水处理的过程中(步骤S2)，微型计算机25通过打开止水阀22来使溢水路21处于打开的状态。由此，在供水处理的过程中洗涤桶8内的水位上升而到达溢水口3D的情况下，能将到达溢水口3D的水从溢水路21导向排水路16来排出。就是说，在立式洗衣机1中，能在供水处理的过程中这样的需要溢水的定时使溢水功能有效，能在桶旋转处理中的内桶4的旋转过程中这样的不需要溢水的定时使溢水功能无效。
并且，如上所述，在桶旋转处理中，微型计算机25随着马达6的停止而通过打开止水阀22来打开溢水路21(步骤S59)。像这样，能在桶旋转处理中随着马达6的停止也就是向洗涤物Q的洒水的停止而打开溢水路21来使溢水功能有效。需要说明的是，作为变形例，也可以是，在桶旋转处理的过程中的整个期间，溢水路21处于始终关闭的状态。
当微型计算机25在桶旋转处理的过程中检测到规定以上大小的偏倚时(步骤S56中为是)，微型计算机25确认本次的偏倚测出是否为本次桶旋转处理中的第一次偏倚测出(步骤S60)。本次桶旋转处理中的偏倚的测出次数暂时存储在存储器27中。
若本次偏倚测出是第一次(步骤S60中为是)，则微型计算机25通过使马达6停止来暂时中断内桶4的旋转(步骤S61)。然后，微型计算机25切换离合器7以使马达6的转矩传递至波轮5，在此基础上，例如通过与步骤S4的松解处理相同的条件来使波轮5反转，由此松解内桶4内的洗涤物Q(步骤S62)。此时，内桶4内已蓄水，洗涤物Q浸于水中而处于容易松解的状态，因此不需要为了松解洗涤物Q而进行供水。
需要说明的是，为了松解洗涤物Q，微型计算机25既可以使内桶4旋转来代替波轮5旋转，也可以使内桶4和波轮5这双方旋转。此外，内桶4和波轮5既可以只单向旋转，也可以如上所述进行反转。
在对洗涤物Q进行规定时间松解后，微型计算机25切换离合器7以使马达6的转矩传递至内桶4，重新开始内桶4的旋转(步骤S55)。就是说，在桶旋转处理中首次检测到偏倚的情况下，在通过松解来消除偏倚的基础上重新开始内桶4的旋转。由此，即使在暂时中止桶旋转处理来消除洗涤物Q的偏倚后不重新进行桶旋转处理，也能使桶旋转处理继续，因此能够进一步谋求洗涤时间的缩短。另一方面，若本次的桶旋转处理中的偏倚测出是第二次以上(步骤S60中为否)，则微型计算机25停止马达6(步骤S58)，打开止水阀22(步骤S59)，中止桶旋转处理。需要说明的是，在桶旋转处理中，也可以省略与偏倚测出相关的处理(步骤S56和S60～S62)。
参照图3，当如上所述桶旋转处理结束或中止时，微型计算机25执行与步骤S3同样的搅拌处理(步骤S6)。当搅拌处理结束时，清洗过程结束。
接着，作为清洗过程后的脱水过程也就是中间脱水过程，微型计算机25在打开排水阀17的状态下使内桶4高速旋转(步骤S7)。通过由该高速旋转产生的离心力，将内桶4内的洗涤物脱水。通过脱水而从洗涤物渗出的水从排水路16排出至机外。在中间脱水过程的最后阶段，微型计算机25切换离合器7以使马达6的转矩不传递至内桶4从而停止马达6，因此内桶4进行惯性旋转。在中间脱水过程的最后，微型计算机25关闭排水阀17。
接着，作为第一漂洗过程，微型计算机25执行喷淋漂洗(步骤S8)。具体而言，微型计算机25在关闭排水阀17的状态下通过间歇性地打开供水阀14来向内桶4内喷淋供水。在该状态下，微型计算机25使内桶4以例如30rpm低速 旋转，以便喷淋遍布洗涤物Q的各个部位。由此，内桶4内的洗涤物Q无死角地被漂洗。之后，微型计算机25执行与步骤S7相同的中间脱水过程(步骤S9)。需要说明的是，可以将各中间脱水过程视为紧接着进行的漂洗过程中的一部分处理。
接着，微型计算机25执行第二漂洗过程。第二漂洗过程的内容除了不存在洗涤剂以外，与清洗过程相同。具体而言，微型计算机25在与步骤S2同样地进行供水之后(步骤S10)，与步骤S3同样地对洗涤物Q进行搅拌漂洗(步骤S11)，在与步骤S4同样地松解洗涤物Q之后(步骤S12)，与步骤S5同样地执行桶旋转处理(步骤S13)。然后，当微型计算机25与步骤S11同样地对洗涤物Q进行了搅拌漂洗时(步骤S14)，第二漂洗过程结束。
通过清洗过程中的桶旋转处理所能获得的效果也能通过第二漂洗过程的桶旋转处理来获得。因此，例如，在第二漂洗过程中洗涤桶8内的水位高的前半阶段，例如刚进行了供水处理(步骤S10)时，也能通过关闭止水阀22来执行桶旋转处理(步骤S13)，因此能在前半阶段执行桶旋转处理。由此，通过增加向内桶4内的洗涤物Q的洒水量，能够谋求洗涤性能、严格来说漂洗性能的提高。
最后，微型计算机25执行与中间脱水过程同样的最终脱水过程(步骤S15)。其中，在中间脱水过程和最终脱水过程中，内桶4的旋转条件也可以不同，特别是，最终脱水过程中的内桶4的最高转速高于中间脱水过程中的内桶4的最高转速。随着最终脱水过程的结束，洗涤运转结束。
本发明不限定于以上说明的实施方式，能够在技术方案所记载的范围内进行各种变更。
例如，前述的搅拌处理、松解处理以及桶旋转处理虽然在前述的实施方式中均在清洗过程和第二漂洗过程这双方中执行，但也可以只在清洗过程和第二漂洗过程的一方中执行，还可以在第一漂洗过程中执行。在清洗过程中的桶旋转处理(步骤S5)和第二漂洗过程中的桶旋转处理(步骤S13)中，内容既可以如上所述相同，也可以不同。此外，在洗涤运转中，也可以省略搅拌处理和松解处理中的一方或两方。
图6是表示变形例的立式洗衣机1的电气结构的框图。在图6中，对与至今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。可以是，立式洗衣机1包括一个使排水阀17和止水阀22这双方工作的致动器41而省略使排水阀17工作的力矩马达30(参照图2)和使止水阀22工作的致动器31(参照图2)。
致动器41由二段式力矩马达等构成，通过微型计算机25的控制来使排水阀17和止水阀22这双方工作。具体而言，致动器41能通过从断开的状态分两个阶段工作来将排水阀17和止水阀22这双方统一开闭，或选择性地只开闭排水阀17和止水阀22中的一方。像这样，能通过共同的致动器41来使排水阀17和止水阀22工作。
作为其他变形例，立式洗衣机1也可以包括兼作排水阀17和止水阀22这双方的三通阀42(参照图1)。该情况的三通阀42例如由电磁阀构成。三通阀42在排水路16中配置于与溢水路21的另一端21B连接的连接部分。三通阀42可以在停止从排水口3H排水的状态下允许从溢水路21向机外排水，或在停止从溢水路21排水的状态下允许从排水口3H向机外排水，或统一停止或者统一允许从排水口3H和溢水路21中的一方排水。
立式洗衣机1中的内桶4的轴线J在前述的实施方式中配置为沿着上下方向Z垂直地延伸(图1参照)，但立式洗衣机1也包括轴线J相对于上下方向Z稍微倾斜地配置的结构。

Claims (4)

  1. 一种立式洗衣机，其特征在于，包括：
    驱动部，产生转矩；
    洗涤桶，具有外桶和内桶，所述外桶可蓄水，并设有排水口、配置于比所述排水口高的位置的溢水口以及配置于比所述溢水口高的位置的开口，所述内桶设有用于使水在所述内桶与所述外桶之间往来的贯通孔和从下侧与所述开口对置的出入口，所述内桶配置于所述外桶内，洗涤物经由所述开口和所述出入口投入取出于所述内桶，所述内桶接受所述驱动部的转矩而进行旋转；
    排水路，连接于所述排水口，排出所述洗涤桶内的水；
    排水阀，对所述排水路进行开闭；
    溢水路，连接于所述溢水口，将所述洗涤桶内的水从所述溢水口导向所述排水路；
    止水阀，对所述溢水路进行开闭；以及
    控制部，在清洗过程和所述清洗过程后的漂洗过程中的至少任一个中执行桶旋转处理，所述桶旋转处理是如下的处理：在由所述排水阀关闭了所述排水路而向所述洗涤桶内蓄留了水的状态下，使所述驱动部工作从而使所述内桶旋转，由此使所述洗涤桶内的水在所述外桶与所述内桶之间上升而从所述出入口向所述内桶内的洗涤物喷淋，其中，在所述桶旋转处理中的所述内桶的旋转过程中，所述控制部通过所述止水阀来使所述溢水路处于关闭的状态。
  2. 根据权利要求1所述的立式洗衣机，其特征在于，
    包括供水部，所述供水部向所述洗涤桶内供水，
    所述控制部在所述桶旋转处理之前执行供水处理，所述供水处理是通过所述排水阀来关闭所述排水路并通过所述供水部来向所述洗涤桶内蓄水的处理，在所述供水处理的过程中，所述控制部通过所述止水阀来使所述溢水路处于打开的状态。
  3. 根据权利要求1或2所述的立式洗衣机，其特征在于，
    所述控制部在所述桶旋转处理中随着所述驱动部的停止而通过所述止水阀来打开所述溢水路。
  4. 根据权利要求1至3中任一项所述的立式洗衣机，其特征在于，
    包括致动器，所述致动器通过所述控制部的控制来使所述排水阀和所述止水阀这双方工作。
PCT/CN2022/105081 2021-07-13 2022-07-12 立式洗衣机 WO2023284711A1 (zh)

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CN1120090A (zh) * 1993-07-19 1996-04-10 株式会社金星社 臭氧杀菌自动洗涤机
CN2333730Y (zh) * 1998-02-13 1999-08-18 胡久明 一种多功能气力洗衣机
JP2003000994A (ja) * 2001-06-21 2003-01-07 Matsushita Electric Ind Co Ltd 洗濯機
CN201473786U (zh) * 2009-05-04 2010-05-19 松下家电研究开发（杭州）有限公司 带有溢泡溢水控制装置的洗衣干燥机
JP2010194238A (ja) * 2009-02-27 2010-09-09 Hitachi Appliances Inc 洗濯機
CN104805653A (zh) * 2015-04-28 2015-07-29 无锡小天鹅股份有限公司 洗衣机
CN107858811A (zh) * 2017-12-08 2018-03-30 珠海格力电器股份有限公司 滚筒洗衣机及其控制方法
CN108138419A (zh) * 2015-09-30 2018-06-08 青岛海尔洗衣机有限公司 洗衣机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1120090A (zh) * 1993-07-19 1996-04-10 株式会社金星社 臭氧杀菌自动洗涤机
CN2333730Y (zh) * 1998-02-13 1999-08-18 胡久明 一种多功能气力洗衣机
JP2003000994A (ja) * 2001-06-21 2003-01-07 Matsushita Electric Ind Co Ltd 洗濯機
JP2010194238A (ja) * 2009-02-27 2010-09-09 Hitachi Appliances Inc 洗濯機
CN201473786U (zh) * 2009-05-04 2010-05-19 松下家电研究开发（杭州）有限公司 带有溢泡溢水控制装置的洗衣干燥机
CN104805653A (zh) * 2015-04-28 2015-07-29 无锡小天鹅股份有限公司 洗衣机
CN108138419A (zh) * 2015-09-30 2018-06-08 青岛海尔洗衣机有限公司 洗衣机
CN107858811A (zh) * 2017-12-08 2018-03-30 珠海格力电器股份有限公司 滚筒洗衣机及其控制方法

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