WO2016029881A1 - 滚筒洗衣机 - Google Patents

滚筒洗衣机 Download PDF

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Publication number
WO2016029881A1
WO2016029881A1 PCT/CN2015/088438 CN2015088438W WO2016029881A1 WO 2016029881 A1 WO2016029881 A1 WO 2016029881A1 CN 2015088438 W CN2015088438 W CN 2015088438W WO 2016029881 A1 WO2016029881 A1 WO 2016029881A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
laundry
drive
driving
unit
Prior art date
Application number
PCT/CN2015/088438
Other languages
English (en)
French (fr)
Inventor
中本重阳
Original Assignee
海尔亚洲株式会社
青岛海尔洗衣机有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 海尔亚洲株式会社, 青岛海尔洗衣机有限公司 filed Critical 海尔亚洲株式会社
Priority to KR1020177008643A priority Critical patent/KR101885178B1/ko
Priority to CN201580046618.4A priority patent/CN106661797B/zh
Priority to US15/506,549 priority patent/US10214847B2/en
Priority to EP15834998.5A priority patent/EP3187638B1/en
Publication of WO2016029881A1 publication Critical patent/WO2016029881A1/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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • 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 
    • D06F23/02—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 horizontal 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined 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 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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 
    • D06F23/06—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 an inclined 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D06F34/34—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by mounting or attachment features, e.g. detachable control panels or detachable display panels

Definitions

  • the present invention relates to a drum washing machine.
  • the drum washing machine can perform washing from washing to drying continuously, or can perform washing without drying.
  • the drum washing machine rotates the washing machine by the baffle provided in the drum by rotating the drum of the horizontal axis type in the outer tank in which the water is stored in the bottom, and falls the laundry to the inner peripheral surface of the drum. To wash the laundry.
  • the drum washing machine is less likely to have a smaller mechanical force acting on the laundry than the fully automatic washing machine that rotates the pulsator in the washing and dewatering tank to wash the laundry, and the stain removing performance is easily lowered.
  • Patent Document 1 Japanese Patent Publication No. 03-280992
  • the load amount of the laundry in the drum is usually detected before the water supply to the washing process is performed, and the water supply amount and the detergent amount are set in accordance with the load amount.
  • the load amount is detected, for example, based on a rotational load applied to the drum when the drum is rotated at a rotational speed at which the laundry is attached to the inner circumferential surface of the drum.
  • the washing property is in a dry state, the friction coefficient becomes larger than the wet state, and cloth damage is likely to occur. Since the detected load is carried out before the water is fed into the outer tank, the laundry is usually dry when the load is detected. Therefore, it is possible to cause cloth damage of the laundry when the drum is rotated.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a drum washing machine capable of preventing cloth damage of laundry from occurring when detecting a load amount.
  • a drum washing machine includes: an outer tub disposed in a casing; a drum disposed in the outer tub and rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction; Arranging at a rear portion of the drum, having a protrusion on the surface in contact with the laundry; the driving portion being operable in a first driving mode and a second driving mode, wherein the first driving mode is A driving form in which the drum and the rotating body rotate at mutually different rotational speeds, and a second driving form is a driving form in which the drum and the rotating body are integrally rotated at the same rotational speed; and a control unit.
  • the control unit detects a load amount of the laundry in the drum, and when the load amount is detected, causes the drive unit to operate in the second drive mode.
  • control unit may be configured to operate the driving unit in the second driving form so that the drum can be attached to at least the inner peripheral surface of the drum with the laundry.
  • the first rotational speed is rotated, and the load is detected based on a rotational load applied to the drum when the drum is rotated at the first rotational speed.
  • the driving portion may adopt a configuration including the drum and a drive motor that generates a torque for rotating the rotating body.
  • the drum washing machine may further include a motor drive unit that supplies a drive current to the drive motor and a current detecting unit that detects the drive current.
  • the control unit causes the drive motor to operate in the second drive mode to rotate the drum at the first rotational speed and to cause the drum to be at the first rotational speed The amount of the drive current detected by the current detecting unit during rotation is detected.
  • the detection load is employed.
  • the driving unit is operated in the second driving mode, it is more preferable to have such a structure because there is no need to worry more about the cloth damage of the laundry.
  • the control unit is for detecting Before the driving portion is operated in the second driving mode, the driving portion is operated in the first driving mode to enable the drum to roll in the drum with laundry The second rotational speed is rotated.
  • the laundry can be loosened by tumbling the laundry in the drum before the load is detected.
  • the laundry can be loosely attached to the inner peripheral surface of the drum when the amount of load is detected, it is possible to suppress the eccentric rotation of the drum due to the concentrated attachment of the laundry, and the load can be accurately detected.
  • the laundry since the laundry is not only tumbling due to the rotation of the drum, but also being stirred by the rotating body, the laundry which is swarmed becomes easier to loosen.
  • a configuration may be employed in which a braking portion for braking the rotating drum is further provided.
  • the control unit brakes the drum by the braking portion when the rotating drum is stopped at the second rotation speed.
  • FIG. 1 is a side cross-sectional view showing a configuration of a drum washing machine according to an embodiment.
  • FIG. 2 is a cross-sectional view showing a configuration of a drive unit according to the embodiment.
  • FIG 3 is a cross-sectional view showing a configuration of a drive unit according to the embodiment.
  • 4(a) and 4(b) are views showing the configuration of a wing pulley and a pulley pulley according to an embodiment.
  • 5(a) to 5(c) are diagrams showing the structure of a clutch guide and a clutch body according to an embodiment. Figure.
  • FIG. 6 are views showing a configuration of a clutch portion constituting a clutch body according to the embodiment.
  • FIG. 7 is a block diagram showing a configuration of a drum washing machine according to an embodiment.
  • FIG. 8 are diagrams showing a load amount table, a water supply amount table, and a detergent amount meter according to the embodiment.
  • FIG. 9 is a flowchart showing a control process of displaying the amount of water supply and the amount of detergent corresponding to the amount of load according to the embodiment.
  • FIGS. 10(a) and (b) are flowcharts showing the loose processing and the load amount detecting processing according to the present embodiment.
  • FIG. 11 is a flowchart showing a loose process according to a modification.
  • FIG. 1 is a side cross-sectional view showing the structure of a drum washing machine 1.
  • the drum washing machine 1 is provided with a casing 10 that constitutes an appearance.
  • the front surface 10a of the casing 10 is inclined from the center portion to the upper portion, and an entrance 11 for laundry is formed on the inclined surface.
  • the inlet 11 is covered by a door 12 that is freely opened and closed.
  • the outer tank 20 is elastically supported by a plurality of dampers 21.
  • the drum 22 is rotatably disposed in the outer tub 20.
  • the outer groove 20 and the rear surface side of the drum 22 are inclined in such a manner as to be lowered in the horizontal direction. Thereby, the drum 22 rotates centering on the inclination axis inclined with respect to the horizontal direction.
  • the inclination angle of the outer tub 20 and the drum 22 can be set to about 10 to 20 degrees.
  • the opening portion 20a of the front surface of the outer tub 20 and the opening portion 22a of the front surface of the drum 22 face the input port 11, and are closed by the door 12 together with the input port 11.
  • a plurality of dewatering holes 22b are formed on the peripheral wall of the drum 22, a plurality of dewatering holes 22b are formed.
  • three lifting ribs 23 are provided at substantially equal intervals in the circumferential direction.
  • the rotating body 24 is rotatably disposed at the rear of the drum 22 .
  • the rotating body 24 has a substantially disk shape.
  • the rotating body 24 rotates coaxially with the drum 22.
  • a drive unit 30 that generates torque for driving the drum 22 and the rotating body 24 is disposed behind the outer tank 20.
  • the driving unit 30 rotates the drum 22 and the rotating body 24 at different rotational speeds in the same direction during the washing process and the rinsing process.
  • the driving unit 30 rotates the drum 22 at a rotational speed smaller than the gravity by the centrifugal force applied to the laundry in the drum 22, and rotates the rotating body 24 at a rotational speed faster than the rotational speed of the drum 22.
  • the drum 22 and the rotating body 24 are integrally rotated by the centrifugal force applied to the laundry in the drum 22 to be much larger than the rotational speed of gravity. The detailed structure of the drive unit 30 will be described later.
  • a drain port portion 20b is formed at the bottom of the outer tub 20.
  • a drain valve 40 is provided in the drain port portion 20b.
  • the drain valve 40 is connected to the drain hose 41. When the drain valve 40 is opened, the water stored in the outer tub 20 is discharged to the outside through the drain hose 41.
  • a detergent box 50 is disposed in the front upper portion of the casing 10.
  • the detergent container 50a containing the detergent is housed in the detergent box 50 so as to be freely extracted from the front.
  • the detergent box 50 is connected to the water supply valve 51 disposed at the rear upper portion in the casing 10 through the water supply hose 52. Further, the detergent box 50 is connected to the upper portion of the outer tub 20 through a water injection pipe 53.
  • the water supply valve 51 is opened, tap water from the faucet is supplied into the outer tank 20 through the water supply hose 52, the detergent box 50, and the water injection pipe 53. At this time, the detergent contained in the detergent container 50a is supplied into the outer tub 20 along the water flow.
  • FIG. 2 and 3 are cross-sectional views showing the configuration of the drive unit 30.
  • FIG. 2 shows a state in which the driving form of the driving unit 30 is switched to the two-axis driving mode
  • FIG. 3 shows a state in which the driving form of the driving unit 30 is switched to the single-axis driving mode.
  • 4 is a view showing the structure of the wing pulley 510 and the drum pulley 610.
  • 4(a) is a view of the wing pulley 510 viewed from the front
  • FIG. 4(b) is a view of the drum pulley 610 viewed from the rear.
  • FIG. 5 is a view showing the configuration of the clutch guide 710 and the clutch body 720.
  • FIG. 5(a) is a side cross-sectional view of the clutch guide 710 and the clutch body 720
  • FIG. 5(b) is a view of the clutch guide 710 as seen from the front
  • FIG. 5(c) is a view of the clutch guide 710 as seen from the rear
  • FIG. 6 is a view showing a configuration of a clutch portion 721 constituting the clutch body 720.
  • Fig. 6(a) is a view of the clutch portion 721 as seen from the front
  • Fig. 6(b) is a side view of the clutch portion 721
  • Fig. 6(c) is a view of the clutch portion 721 as seen from the rear.
  • the drive unit 30 includes a drive motor 100, a first rotating shaft 200, a second rotating shaft 300, a bearing unit 400, a wing reduction mechanism 500, a drum reduction mechanism 600, and a clutch mechanism unit 700.
  • the drive motor 100 generates torque for driving the drum 22 and the rotating body 24.
  • Drive motor 100 is For example, an outer rotor type DC brushless motor has a motor shaft 120 connected to the rotor in the housing 110 extending rearward from the housing 110.
  • the first rotating shaft 200 has a hollow shape.
  • a first sliding bearing 211 and a second sliding bearing 212 are respectively disposed inside, at the front and the rear of the first rotating shaft 200, and a mechanical seal 213 is provided at the front end portion.
  • the second rotating shaft 300 is enclosed in the first rotating shaft 200.
  • the front portion of the second rotating shaft 300 protrudes forward from the first rotating shaft 200, and the rear portion of the second rotating shaft 300 protrudes rearward from the first rotating shaft 200.
  • the outer peripheral surface of the second rotating shaft 300 is received by the first sliding bearing 211 and the second sliding bearing 212, and smoothly rotates in the first rotating shaft 200. Further, water is prevented from intruding between the second rotating shaft 300 and the first rotating shaft 200 by the mechanical seal 213.
  • a substantially cylindrical bearing portion 410 is provided at the center portion. Inside the bearing portion 410, a first rolling bearing 411 and a second rolling bearing 412 are provided at the front portion and the rear portion, respectively, and a mechanical seal 413 is provided at the front end portion.
  • the outer peripheral surface of the first rotating shaft 200 is received by the first rolling bearing 411 and the second rolling bearing 412, and smoothly rotates in the bearing portion 410. Further, water is prevented from intruding between the first rotating shaft 200 and the bearing portion 410 by the mechanical seal 413.
  • a fixing flange portion 420 is formed around the bearing portion 410.
  • the bearing unit 400 is fixed to the rear surface of the outer tub 20 by a fixing flange portion 420 by a fastening method such as screw fastening.
  • a fastening method such as screw fastening.
  • the drum 22 is fixed to the first rotating shaft 200 by a screw (not shown), and the rotating body 24 is fixed to the second rotating shaft 300 by a screw 310.
  • the wing reduction mechanism 500 includes a wing pulley 510, a first motor pulley 520, and a wing drive belt 530.
  • the rotation of the drive motor 100 is decelerated according to a reduction ratio determined by the outer diameter ratio of the wing pulley 510 and the first motor pulley 520, and is transmitted to the second rotary shaft 300.
  • the wing pulley 510 is rotatably supported by the rear end portion of the second rotating shaft 300.
  • an insertion hole 511 into which the second rotating shaft 300 is inserted is formed at the center portion, and two front and rear rolling bearings 512, 513 are interposed between the insertion hole 511 and the second rotating shaft 300.
  • the wing pulley 510 smoothly rotates with respect to the second rotation shaft 300 through the two rolling bearings 512, 513.
  • annular engaged recess 514 is formed on the front surface of the wing pulley 510.
  • a rack 515 is formed on the outer circumferential surface of the engaged recess 514 over the entire circumference.
  • the wing pulley 510 is prevented from falling rearward by the fixing screw 320 attached to the rear end portion of the second rotating shaft 300.
  • the first motor pulley 520 is attached to the front end portion of the motor shaft 120 of the drive motor 100.
  • Wing belt The 530 is mounted between the wing pulley 510 and the first motor pulley 520.
  • the drum reduction mechanism 600 includes a drum pulley 610, a second motor pulley 620, and a drum drive belt 630.
  • the rotation of the drive motor 100 is decelerated according to the reduction ratio determined by the outer diameter ratio of the drum pulley 610 and the second motor pulley 620, and is transmitted to the first rotary shaft 200.
  • the drum pulley 610 is formed in a disk shape in which the front surface is opened, and includes a pulley portion 611 and a fixing portion 612 having a smaller outer diameter than the pulley portion 611. Since the outer diameter of the pulley portion 611, that is, the outer diameter of the drum pulley 610 is larger than the outer diameter of the wing pulley 510, the reduction ratio produced by the drum reduction mechanism 600 is larger than the reduction ratio generated by the wing reduction mechanism 500.
  • an insertion hole 613 is formed in the center portion.
  • the rear end portion of the first rotating shaft 200 is inserted into the insertion hole 613 and fixed to the insertion hole 613 by a predetermined fixing method using a rack press or the like. Thereby, the drum pulley 610 is fixed to the rear end portion of the first rotating shaft 200.
  • annular engaged concave portion 614 is formed on the outer circumference of the insertion hole 613 on the rear surface of the fixing portion 612.
  • a rack 615 is formed over the entire circumference of the outer peripheral surface of the engaged recess 614.
  • the rear end portion of the bearing portion 410 is housed inside the pulley portion 611 which is a recess 616 recessed rearward. Thereby, the bearing unit 400 and the drum pulley 610 are overlapped in the front-rear direction of the drive unit 30.
  • the second motor pulley 620 is mounted to the root of the motor shaft 120 of the drive motor 100.
  • the drum drive belt 630 is disposed between the drum pulley 610 and the second motor pulley 620.
  • the clutch mechanism unit 700 switches the driving form of the driving unit 30 between a two-axis driving mode in which the rotation of the wing pulley 510 can be transmitted to the second rotating shaft 300, and a single-axis driving mode.
  • the uniaxial driving form is configured to transmit the rotation of the drum pulley 610 to the second
  • the rotation shaft 300 is connected to the second rotating shaft 300 and the drum pulley 610 to drive the drum 22 and the rotating body 24 at the same rotational speed.
  • the biaxial drive mode corresponds to the first drive mode of the present invention
  • the uniaxial drive mode corresponds to the second drive mode of the present invention.
  • the clutch mechanism portion 700 includes a clutch guide 710, a clutch body 720, a clutch lever 730, a lever support portion 740, and a clutch drive device 750.
  • the clutch guide 710 and the clutch body 720 are disposed between the drum pulley 610 and the wing pulley 510 which are arranged side by side in the axial direction of the first rotating shaft 200 and the second rotating shaft 300.
  • the clutch guide 710 has a cylindrical shape in which the front surface is opened.
  • a rack 711 is formed over the entire circumference of the outer peripheral surface of the clutch guide 710.
  • the central portion is formed with an insertion hole 712.
  • the insertion hole 712 is formed with a key groove 713.
  • the clutch guide 710 is passed through the second rotating shaft 300 through the insertion hole 712, and is fixed to the second rotating shaft 300 by a key groove 713 and a key (not shown). Thereby, the clutch guide 710 rotates together with the second rotating shaft 300.
  • the clutch body 720 includes a clutch portion 721, an enclosing portion 722, and a rolling bearing 723.
  • the clutch portion 721 has a cylindrical shape in which the front surface and the rear surface are opened.
  • a front rack 724 and a rear rack 725 are formed on the front and rear portions over the entire circumference.
  • the inner diameter of the clutch portion 721 is substantially equal to the outer diameter of the clutch guide 710, and the front and rear dimensions of the clutch portion 721 are set to be larger than the front and rear dimensions of the clutch guide 710.
  • a clutch guide 710 is inserted inside the clutch portion 721.
  • An inner rack 726 is formed on the inner circumferential surface of the clutch portion 721 over the entire circumference, and the inner rack 726 is engaged with the rack 711 of the clutch guide 710.
  • the front and rear dimensions of the inner rack 726 are set to be larger than the front and rear dimensions of the rack 711.
  • the clutch portion 721 By engaging the inner rack 726 and the rack 711, the clutch portion 721 is movable in the axial direction of the second rotary shaft 300 with respect to the clutch guide 710, that is, the second rotary shaft 300 to which the clutch guide 710 is fixed, and can A state of being rotated together with the second rotating shaft 300.
  • the surrounding portion 722 is formed in an annular shape, and surrounds the center portion of the clutch portion 721 so that the clutch portion 721 is free to rotate.
  • a rolling bearing 723 is provided between the clutch portion 721 and the surrounding portion 722.
  • the rolling bearing 723 is fixed by means of two buckles 727, 728 in size to prevent back and forth movement.
  • the clutch portion 721 smoothly rotates with respect to the surrounding portion 722 by the rolling bearing 723.
  • the clutch lever 730 is coupled to the surrounding portion 722 such that its upper end portion is rotatable relative to the surrounding portion 722. Further, the clutch lever 730 is rotatably supported by a support shaft 741 provided on the lever support portion 740.
  • the clutch drive 750 includes an actuator 751 and an operating lever 752.
  • the actuator 751 moves the operating lever 752 forward and backward.
  • the operating lever 752 is coupled to the lower end portion of the clutch lever 730.
  • the lower end portion of the clutch lever 730 is rotatable relative to the operating lever 752.
  • the lever support portion 740 and the clutch drive device 750 are fixed to a mounting plate (not shown) that is attached to the bearing unit 400 or the outer tub 20.
  • the clutch lever 730, the lever support portion 740, and the clutch drive device 750 constitute a moving mechanism portion for moving the clutch body 720.
  • the operating lever 752 When the driving form of the driving unit 30 is switched from the single-axis driving mode to the two-axis driving mode, As shown in FIG. 2, the operating lever 752 is pushed forward from the inside of the actuator 751. The lower end portion of the clutch lever 730 is urged to move forward by the operating lever 752, and the clutch lever 730 is rotated rearward about the spindle 741. The upper end portion of the clutch lever 730 moves rearward, and the clutch body 720 is pushed rearward by the upper end portion of the clutch lever 730. Thereby, the rear rack 725 of the clutch portion 721 and the rack 515 of the wing pulley 510 are engaged.
  • the rotation of the drive motor 100 is transmitted to the first rotating shaft 200 via the drum reduction mechanism 600, and the drum 22 fixed to the first rotating shaft 200 is rotated.
  • the drum 22 is rotated at a rotation speed at which the rotation speed of the drive motor 100 is reduced in accordance with the reduction ratio generated by the drum reduction mechanism 600.
  • the rotary body 24 rotates in the same direction as the drum 22 at a rotation speed faster than the drum 22.
  • the clutch portion 721 rotates together with the wing pulley 510.
  • the clutch lever 730 is coupled to the surrounding portion 722 that connects the clutch portion 721 in a freely rotatable state, even if the clutch portion 721 rotates, the rotation hardly occurs. It is transmitted to the clutch lever 730.
  • the operating lever 752 is retracted inside the actuator 751. That is, the operating lever 752 moves rearward. The lower end portion of the clutch lever 730 is pulled rearward by the operating lever 752, and the clutch lever 730 is rotated forward about the spindle 741. The upper end portion of the clutch lever 730 moves forward, and the clutch body 720 is pushed forward by the upper end portion of the clutch lever 730. Thereby, the front rack 724 of the clutch portion 721 and the rack 615 of the drum pulley 610 are engaged.
  • the wing pulley 510 in the single-axis drive mode, when the drive motor 100 rotates, the wing pulley 510 also rotates in accordance with the rotation. However, the wing pulley 510 is only idling with respect to the second rotation shaft 300, and the rotation of the wing pulley 510 is not transmitted to the second rotation shaft 300.
  • FIG. 7 is a block diagram showing the configuration of the drum washing machine 1.
  • the drum washing machine 1 includes a control unit 801, a storage unit 802, an operation unit 803, a water level sensor 804, a current detecting unit 805, a display unit 806, a motor drive unit 807, a water supply driving unit 808, and a drain drive unit. 809, a clutch drive unit 810, and a door lock device 811.
  • the operation unit 803 includes a power button 803a, a start button 803b, and a mode selection button 803c.
  • the power button 803a is a button for turning on and blocking the power of the drum washing machine 1.
  • the start button 803b is a button for starting the washing operation.
  • the mode selection button 803c is a button for selecting an arbitrary washing mode from among a plurality of washing modes of the washing operation.
  • the operation unit 803 outputs an input signal corresponding to the button operated by the user to the control unit 801.
  • the water level sensor 804 detects the water level in the outer tank 20, and outputs a water level detection signal corresponding to the detected water level to the control unit 801.
  • the display unit 806 includes a mode display unit 806a, a process display unit 806b, a water supply amount display unit 806c, and a detergent amount display unit 806d.
  • the mode display portion 806a displays the washing mode selected by the mode selection button 803c.
  • the process display portion 806b displays the process that is being performed during the washing operation.
  • the water supply amount display portion 806c displays the amount of water supplied in the outer tank 20, that is, the amount of water supplied, determined based on the load amount of the laundry in the drum 22.
  • the detergent amount display portion 806d displays the amount of detergent supplied to the inside of the drum 22, that is, the amount of detergent, determined based on the amount of laundry in the drum 22.
  • the motor drive unit 807 supplies a drive current to the drive motor 100 based on a control signal from the control unit 801.
  • the motor drive unit 807 has a speed sensor that detects the rotational speed of the drive motor 100, an inverter circuit, and the like, and adjusts the drive current so that the drive motor 100 rotates at the rotational speed set by the control unit 801.
  • the current detecting unit 805 detects a drive current supplied from the motor drive unit 807 to the drive motor 100, and outputs a detection signal corresponding to the magnitude of the drive current to the control unit 801.
  • the water supply driving unit 808 supplies a driving current to the water supply valve 51 based on a control signal from the control unit 801.
  • the drain drive unit 809 supplies drive power to the drain valve 40 based on a control signal from the control unit 801. flow.
  • the clutch drive unit 810 supplies a drive current to the actuator 751 based on a control signal from the control unit 801.
  • the door lock device 811 locks and unlocks the door 12 based on a control signal from the control unit 801.
  • the storage unit 802 includes an EEPROM, a RAM, and the like. In the storage unit 802, a program for executing a washing operation of various washing modes is stored. Further, in the storage unit 802, various parameters and various control flags for executing these programs are stored.
  • the storage unit 802 includes a load amount table 802a, a water supply amount table 802b, and a detergent amount table 802c.
  • 8(a), (b) and (c) are diagrams showing the load amount table 802a, the water supply amount table 802b, and the detergent amount table 802c, respectively.
  • the first current value is a value of a drive current supplied to the drive motor 100 when the drum 22 is rotated at the first attachment speed.
  • the first attachment speed is such that the centrifugal force applied to the laundry in the drum 22 is larger than the gravity, and the laundry can be attached to the rotational speed of the inner circumferential surface of the drum 22.
  • the second current value is a value of a drive current supplied to the drive motor 100 when the drum 22 is rotated at a second attachment speed faster than the first attachment speed. Further, the first attachment speed and the second attachment speed correspond to the first rotation speed of the present invention.
  • the increase amount of the second current value is larger than the increase amount of the first current value. Therefore, the greater the amount of load, the greater the difference between the second current value and the first current value.
  • the load amount table 802a the larger the difference, the larger the value of the corresponding load amount.
  • the amount of load corresponding to the range of each difference is determined in advance by performing a test or the like.
  • the water supply amount table 802b a plurality of load amounts and a water supply amount corresponding to each load amount are stored. Since the amount of water is required for washing as the amount of load is increased, in the water supply amount table 802b, the larger the value of the load amount, the larger the value of the corresponding water supply amount.
  • the detergent amount table 802c a plurality of load amounts and a detergent amount corresponding to each load amount are stored. Since the more the amount of load, the more detergent is required for washing, in the detergent meter 802c, the larger the value of the load, the larger the value of the corresponding amount of detergent.
  • the control unit 801 is based on the operation unit 803, the water level sensor 804, the current detecting unit 805, and the like. Each of the signals is controlled by the display unit 806, the motor drive unit 807, the water supply drive unit 808, the drain drive unit 809, the clutch drive unit 810, the door lock device 811, and the like based on the program stored in the storage unit 802.
  • the drum washing machine 1 performs a washing operation of the washing mode selected by the user via the mode selection button 803c.
  • the washing process, the intermediate dehydration process, the rinsing process, and the final dehydration process are sequentially performed.
  • the washing mode sometimes more than two intermediate dehydration processes and rinsing processes are performed.
  • the driving form of the driving unit 30 is switched to the two-axis driving mode.
  • water is accumulated to a predetermined water level which is not at the lower edge of the inlet port 11, so that the laundry in the drum 22 is immersed in water, and in this state, the drive motor 100 alternately performs forward rotation and reverse rotation.
  • the drum 22 and the rotating body 24 alternately perform forward rotation and reverse rotation in a state where the rotational speed of the rotary body 24 is faster than the rotational speed of the drum 22 .
  • the drum 22 is rotated by a centrifugal force that acts on the laundry to be smaller than the gravity.
  • the laundry in the drum 22 is lifted up by the lifting ribs 23 and tumbling in the drum 22. Thereby, the laundry is dropped onto the inner circumferential surface of the drum 22. In addition, in the rear portion of the drum 22, the laundry comes into contact with the projecting portion 24a of the rotating rotating body 24, and the laundry is rubbed and stirred by the protruding portion 24a. Thereby, the laundry is washed or rinsed.
  • the mechanical force generated by the rotating body 24 is imparted to the laundry in addition to the mechanical force generated by the rotation of the drum 22, so that the cleaning performance can be expected to be improved.
  • the driving form of the drive unit 30 is switched to the uniaxial drive mode.
  • the motor 100 that is, the drum 22 and the rotating body 24 are driven to integrally rotate the centrifugal force acting on the laundry in the drum 22 far greater than the rotational speed of gravity.
  • the laundry is pressed to the inner peripheral surface of the drum 22 by the action of centrifugal force to perform dehydration.
  • the drum 22 and the rotating body 24 rotate integrally when the water is dehydrated, the laundry can be dehydrated satisfactorily when the laundry attached to the drum 22 is not stirred by the rotating body 24.
  • the drum washing machine 1 of the present embodiment when the washing operation is started, before the washing process is performed, first, the load amount of the laundry in the drum 22 is detected, and the water supply amount and the washing are determined based on the detected load amount. The dose, the determined water supply amount and the detergent amount are respectively displayed by the water supply amount display portion 806c and the detergent amount display portion 806d.
  • Fig. 9 is a flowchart showing a control process for displaying the amount of water supply and the amount of detergent corresponding to the amount of load.
  • Fig. 10 (a) is a flow chart showing the loose processing
  • Fig. 10 (b) is a flow showing the load amount detecting processing. Figure.
  • control unit 801 first operates actuator 751 to move clutch body 720 toward wing pulley 510 side, and switches drive mode of drive unit 30 from a single-axis drive mode to a two-axis drive mode (S11).
  • the user When the laundry is put into the drum 22, the user sometimes puts the laundry into the drum 22 one by one, and sometimes a plurality of laundry objects are put into the drum 22 in a group.
  • the state In the case where the laundry is put into a mass, the state is maintained, and when the rotation of the drum 22 is accelerated in order to detect the load amount until the rotation speed reaches the rotation speed of the laundry attached to the inner circumferential surface of the drum 22, the laundry It is easy to focus on a certain position on the inner circumferential surface of the drum 22.
  • control unit 801 performs the loose processing shown in FIG. 10(a) before performing the detection of the load amount (S12).
  • the control unit 801 rotates the drive motor 100 to the right (S101) to rotate the drum 22 to the right at the tumbling speed.
  • the tumbling speed is a rotational speed at which the centrifugal force acting on the laundry is smaller than the gravity and the laundry can be tumbled within the drum 22.
  • the tumbling speed is set to 45 rpm.
  • the tumbling speed corresponds to the second rotational speed of the present invention.
  • the control unit 801 stops energizing the drive motor 100 and temporarily stops the drum 22 (S103). Immediately thereafter, the control unit 801 rotates the drive motor 100 to the left (S104) to rotate the drum 22 to the left at the tumbling speed.
  • the control unit 801 stops energizing the drive motor 100 and stops the drum 22 (S106). Then, the control unit 801 determines whether or not the drum 22 has been rotated left and right a predetermined number of times (S107). When the number of times of the right and left rotation has not reached the predetermined number of times (S107: NO), the control unit 801 returns the processing to step S101, and causes the drum 22 to alternately perform the right rotation and the left rotation again (S101 to S106).
  • the drum 22 repeats the right rotation and the left rotation, and the laundry repeatedly performs the right-handed rolling and the left-handed rolling until the right and left rotation of the drum 22 is performed a predetermined number of times.
  • the laundry which is agglomerated is loosened.
  • the driving form of the driving unit 30 has been switched to the two-shaft driving mode, and the rotating body 24 is rotated with respect to the drum 22 at the rear portion of the drum 22. Therefore, the laundry is also stirred by the rotating body 24, and the laundry which becomes a mass becomes easier to loosen.
  • control unit 801 operates the actuator 751 to move the clutch body 720 toward the drum pulley 610 side, and switches the driving form of the driving unit 30 from the biaxial driving mode to the single-axis driving mode. (S13). Then, the control unit 801 performs the load amount detecting process shown in FIG. 10(b) (S14).
  • the control unit 801 causes the drive motor 100 to rotate in one direction (S201), so that the drum 22 performs one-way rotation at the first attachment speed.
  • the first attachment speed is a rotation speed at which the centrifugal force acting on the laundry is larger than the gravity and the laundry can be attached to the inner circumferential surface of the drum 22.
  • the first attachment speed is set to 65 rpm. Since the laundry in the drum 22 is loosened by the loose treatment just now, when the rotation of the drum 22 is accelerated to the first attachment speed, the laundry is easily dispersed and attached to the entire inner peripheral surface of the drum 22.
  • control unit 801 detects the value of the drive current supplied to the drive motor 100 by the current detecting unit 805, and stores it as the first current value in the storage unit 802 (S202).
  • the control unit 801 accelerates the rotational speed of the drive motor 100 to rotate the drive motor 100 (S203) so that the drum 22 is unidirectionally rotated at a second attachment speed faster than the first attachment speed. For example, when the inner diameter of the drum 22 is about 520 mm, the second attachment speed is set to 165 rpm.
  • the control unit 801 detects the value of the drive current supplied to the drive motor 100 by the current detection unit 805, and stores it as the second current value in the storage unit 802 (S204).
  • the control unit 801 obtains the difference between the second current value stored in the storage unit 802 and the first current value, and refers to the load amount table 802a to determine the load amount from the obtained difference value (S205). Then, the control unit 801 stops energization of the drive motor 100 and stops the drum 22 (S206), and ends the load amount detecting process.
  • the driving form of the driving unit 30 has been switched to the single-axis driving mode, and the drum 22 and the rotating body 24 are integrally rotated. That is, the rotating body 24 does not rotate with respect to the drum 22.
  • the driving motor 100 is rotated in the biaxial driving mode
  • the rotating body 24 is rotated with respect to the drum 22
  • a part of the laundry is in contact with the rotating rotating body 24 at the rear portion of the drum 22, and the rotating body 24 is rotated.
  • the possibility of friction The drum 22 is rotated at a rotational speed at which the laundry is attached to the inner circumferential surface of the drum 22, because the rotation speed is faster than the rotation speed of the washing process, the rinsing process, and the previous loose processing, and therefore, the rotation speed of the rotating body 24 also changes. fast. Therefore, there is a possibility that the laundry in contact with the rotating body 24 is damaged by the cloth.
  • the rotating body 24 since the drum 22 and the rotating body 24 rotate integrally, the rotating body 24 is relatively rolled. Since the drum 22 does not rotate, the laundry is not rubbed by the rotating body 24 having a high rotational speed, and the cloth damage of the laundry due to the rotating body 24 does not occur.
  • the load amount may be determined based on one drive current value.
  • the drive current value differs due to voltage fluctuations of the external commercial power source and manufacturing errors of the product.
  • control unit 801 refers to the water supply amount table 802b and the detergent amount table 802c based on the determined load amount, and determines the water supply amount and the detergent amount (S15). Then, the control unit 801 displays the determined water supply amount on the water supply amount display unit 806c, and displays the determined detergent amount on the detergent amount display unit 806d (S16). Then, the control unit 801 ends the control process of Fig. 9 .
  • the user confirms the amount of detergent displayed by the detergent amount display unit 806d, and puts the amount of detergent into the detergent box 50. Further, the control unit 801 performs only the determined water supply amount of the feed water in the outer tank 20 during the washing process and the rinsing process.
  • the drive unit 30 when the load amount of the laundry in the drum 22 is detected, the drive unit 30 operates in a uniaxial drive mode.
  • the uniaxial driving mode since the drum 22 and the rotating body 24 rotate integrally, the rotating body 24 does not rotate with respect to the drum 22, and thus the laundry is not rubbed by the rotating rotating body 24. Therefore, it is possible to detect the load amount without worrying about the cloth damage of the laundry caused by the rotating body 24.
  • the drum washing machine rotates the drum 22 at a rotational speed at which the laundry can be attached to the inner peripheral surface of the drum 22, and detects the amount of load based on the rotational load applied to the drum 22 at the time of the rotation. More specifically, in the present embodiment, the difference is detected based on the difference between the drive current value of the drive motor 100 detected at the second attachment speed and the drive current value of the drive motor 100 detected at the first attachment speed. The amount of load.
  • the drive unit 30 is driven by two axes.
  • the drive unit 30 is operated in the uniaxial drive mode when the load amount is detected as in the present embodiment, it is more preferable to avoid the cloth damage of the laundry. .
  • the drive unit 30 before the load amount is detected, the drive unit 30 operates in a biaxial drive mode to rotate the drum 22 at a tumbling speed at which the laundry can roll in the drum 22.
  • the laundry since the laundry can be loosened before the load amount is detected, the laundry can be dispersedly attached to the inner circumferential surface of the drum 22 when the load amount is detected. Therefore, it is possible to suppress the eccentric rotation of the drum 22 due to the concentrated attachment of the laundry, and it is possible to accurately detect the amount of load. Further, since the laundry is not only tumbling by the rotation of the drum 22 but also by the rotating body 24, the laundry which is swarmed becomes easier to loosen.
  • Fig. 11 is a flowchart showing the loose processing according to the modification.
  • step S111 is added after the processing of step S103 as compared with the loose processing of FIG. 10( a ), and the processing of step S112 is added after the processing of step S106 .
  • the motor drive unit 807 short-circuits the coil of the drive motor 100, thereby causing the short-circuit brake, which is one of the electromagnetic brakes, to act on the rotating drive motor 100 to brake the drive motor 100.
  • the drum 22 that is coupled to the drive motor 100 via the drum reduction mechanism 600 and the first rotating shaft 200 is braked by the brake driving motor 100.
  • the motor drive unit 807 functions not only as the motor drive unit of the present invention but also as a brake unit.
  • the control unit 801 stops energizing the drive motor 100 when the drum 22 that rotates right at the tumbling speed is stopped (S103), and the electromagnetic brake is operated by the motor drive unit 807 (S111).
  • the control unit 801 stops energizing the drive motor 100 (S106), and operates the electromagnetic brake by the motor drive unit 807 (S112). Therefore, since the drum 22 is rapidly stopped by the braking, a large inertial force is applied to the laundry in the drum 22 at this time, so that the laundry which is swarmed is easily loosened.
  • the amount of load is detected based on the magnitude of the drive current supplied to the drive motor 100 when the drum 22 is rotated.
  • the method of detecting the amount of load by rotating the drum 22 is not limited thereto. For example, after the drum 22 is rotated, the driving of the driving motor 100 may be stopped, and the amount of load may be detected based on the time required for the drum 22 to stop until the drum 22 is inertly rotated.
  • the laundry is attached to the drum 22
  • the rotational load applied to the drum 22 when the rotational speed of the inner peripheral surface is rotated is used to detect the load amount, and may be applied to the drum 22 based on the rotation speed of the drum 22 being accelerated until the laundry is attached to the inner peripheral surface of the drum 22.
  • Rotate the load to detect the amount of load In this case, the rotational load can be detected by the magnitude of the current supplied to the drive motor and the time required for the acceleration.
  • the drum 22 is alternately rotated left and right.
  • the drum 22 may be rotated in one of the left and right directions.
  • the loose processing is performed before the load amount detecting processing.
  • the control unit 801 maintains the driving form of the driving unit 30 in the uniaxial driving mode, and in this state, rotates the driving motor 100 to detect the amount of load.
  • the drum 22 is braked by causing the electromagnetic brake to act on the drive motor 100.
  • the drum 22 may be braked by a mechanical brake mechanism such as a belt brake.
  • the drum 22 is rotated about the tilt axis that is inclined with respect to the horizontal direction.
  • the drum washing machine 1 may be configured to rotate the drum 22 around the horizontal axis.
  • drum washing machine 1 of the above embodiment does not have a drying function, but the present invention can also be applied to a drum washing machine having a drying function, that is, a drum type drying washing machine.
  • 10 housing; 20: outer groove; 22: roller; 24: rotating body; 24a: protruding portion; 30: driving portion; 100: driving motor; 801: control portion; 805: current detecting portion; 807: motor driving Department (brake)

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  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
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Abstract

一种滚筒洗衣机（1），能够在检测负载量时防止洗涤物发生布损伤。滚筒洗衣机（1）具备：外槽（20），配置在壳体（10）内；滚筒（22），配置在外槽（20）内，并能以水平轴或相对于水平方向倾斜的倾斜轴为中心进行旋转；旋转体（24），配置在滚筒（22）的后部，表面具有与洗涤物接触的突状部（24a）；驱动部（30），能够以第一驱动形态和第二驱动形态进行，其中，第一驱动形态是使滚筒（22）和旋转体（24）以相互不同的旋转速度进行旋转的驱动形态，第二驱动形态是使滚筒（22）和旋转体（24）以相同的旋转速度一体旋转的驱动形态；以及控制部（801）。此处，控制部（801）检测滚筒（22）内的洗涤物的负载量，并且在进行该负载量检测时使驱动部（30）以单轴驱动形态进行工作(S13、S14)。

Description

滚筒洗衣机 技术领域
本发明涉及一种滚筒洗衣机。该滚筒洗衣机既可以连续地进行从洗涤到烘干，也可以进行洗涤但不进行烘干。
背景技术
以往，滚筒洗衣机通过使横轴型的滚筒在底部蓄有水的外槽内旋转，由设置在滚筒内的提升筋(baffle)将洗涤物举起落下，将洗涤物摔到滚筒的内周面来洗涤洗涤物。
这样，在通过提升筋搅拌洗涤物的结构中，洗涤物彼此之间很难互相缠绕或互相摩擦。因此，滚筒洗衣机与在洗涤脱水槽内使搅拌器(pulsator)旋转来洗涤洗涤物的全自动洗衣机相比，作用于洗涤物的机械力容易变小，去污性能容易降低。
因此，对于滚筒洗衣机而言，为了提高清洗性能，可以采用下述结构：在滚筒的后部设置具有突状部的旋转体，并在进行洗涤、漂洗时，使滚筒和旋转体以相互不同的旋转速度旋转(参照专利文献1)。
现有技术文献
专利文献
专利文献1：日本特开平03-280992号公报
发明内容
发明要解决的问题
然而，在滚筒洗衣机中，通常在进行洗涤过程的给水之前，检测滚筒内的洗涤物的负载量，并根据负载量来设定给水量和洗涤剂量。负载量例如根据以使洗涤物贴在滚筒的内周面的旋转速度使滚筒进行旋转时施加于滚筒的旋转负载来检测。
由于洗涤物在干燥的状态下，摩擦系数变得比浸湿状态大，因而容易产生布损伤。由于检测负载量是在向外槽内给水之前进行，因而在检测负载量时，通常洗涤物是干燥的。因此，在使滚筒旋转时有可能会产生洗涤物的布损伤。
特别是，在滚筒的后部设置了旋转体的滚筒洗衣机中，也有可能会在检测负载量时由于旋转体旋转而产生洗涤物的布损伤。
本发明是鉴于该问题而完成的，其目的在于，提供一种滚筒洗衣机，在检测负载量时能防止产生洗涤物的布损伤。
用于解决问题的方案
本发明的主要方式的滚筒洗衣机，具备：外槽，配置在壳体内；滚筒，配置在所述外槽内，并且能以水平轴或相对于水平方向倾斜的倾斜轴为中心进行旋转；旋转体，配置在所述滚筒的后部，在表面具有与洗涤物相接触的突状部；驱动部，能够以第一驱动形态和第二驱动形态进行工作，其中，第一驱动形态是使所述滚筒和所述旋转体以相互不同的旋转速度进行旋转的驱动形态，第二驱动形态是使所述滚筒和所述旋转体以相同的旋转速度一体旋转的驱动形态；以及控制部。此处，所述控制部检测所述滚筒内的洗涤物的负载量，并且在检测该负载量时使所述驱动部以所述第二驱动形态进行工作。
根据上述的结构，检测负载量时，由于滚筒和旋转体一体旋转，旋转体相对于滚筒不旋转，因而不会有洗涤物被旋转的旋转体摩擦的情况。因此，能不用担心由于旋转体旋转而导致洗涤物的布损伤地进行负载量检测。
在本方式的滚筒洗衣机中，所述控制部可以构成为，使所述驱动部以所述第二驱动形态进行工作，以便使所述滚筒以洗涤物至少能贴在所述滚筒的内周面的第一旋转速度进行旋转，基于使所述滚筒以所述第一旋转速度进行旋转时施加给所述滚筒的旋转负载，来检测所述负载量。
更具体地说，所述驱动部可以采用包括所述滚筒和产生使所述旋转体旋转的转矩的驱动电机的结构。此外，滚筒洗衣机还可以具备向所述驱动电机提供驱动电流的电机驱动部和检测所述驱动电流的电流检测部。而且，所述控制部使所述驱动电机以所述第二驱动形态进行工作，以便使所述滚筒以所述第一旋转速度进行旋转，并基于使所述滚筒以所述第一旋转速度进行旋转时通过所述电流检测部检测到的所述驱动电流的大小，检测所述负载量。
为了检测负载量，在采用滚筒以洗涤物能贴在滚筒的内周面的旋转速度进行旋转的结构的情况下，当采用检测负载量时使驱动部以第一驱动形态进行工作的结构时，由于旋转体以比洗涤过程、漂洗过程时更快的旋转速度进行旋转，因而更有可能产生洗涤物的布损伤。因此，在这样的结构中，采用检测负载量 时使驱动部以第二驱动形态进行工作的结构的话，因为不需要更担心洗涤物的布损伤，所以更优选这种结构。
如上所述，为了检测负载量，采用使滚筒以洗涤物能贴在滚筒的内周面的旋转速度进行旋转的结构的情况下，进一步地可以采用下述结构：所述控制部在为了检测所述负载量而使所述驱动部以所述第二驱动形态进行工作之前，使所述驱动部以所述第一驱动形态进行工作，以便使所述滚筒以洗涤物能在所述滚筒内翻滚的第二旋转速度进行旋转。
采用这样的结构的话，在检测负载量之前，通过使滚筒内的洗涤物翻滚，能使洗涤物松散开。由此，由于在检测负载量时能松散开洗涤物使其贴在滚筒的内周面，因而能抑制因洗涤物的集中贴附而导致滚筒偏心旋转，从而能精度良好地检测负载量。并且，由于洗涤物不仅因滚筒的旋转而翻滚，还会被旋转体搅拌，因而团成一团的洗涤物变得更容易松散开。
在采用上述的结构的情况下，可以采用还具备用于对旋转的所述滚筒进行制动的制动部的结构。在这种情况下，所述控制部在以所述第二旋转速度使旋转的所述滚筒停止时通过所述制动部对所述滚筒进行制动。
如果采用这样的结构的话，滚筒由于被制动而急速停止，因而此时对滚筒内的洗涤物施加很大的惯性力，从而团成一团的洗涤物变得容易松散开。
发明效果
根据本发明，能提供一种滚筒洗衣机，能在检测负载量时防止产生洗涤物的布损伤。
本发明的效果以及意义由如下所示的实施方式的说明来进一步明确。但是，以下的实施方式只是实施本发明时的一个例示，本发明不受以下的实施方式所述的任何限制。
附图说明
图1是表示实施方式所涉及的滚筒洗衣机的结构的侧面剖视图。
图2是表示实施方式所涉及的驱动部的结构的剖视图。
图3是表示实施方式所涉及的驱动部的结构的剖视图。
图4(a)和(b)是表示实施方式所涉及的翼带轮和滚筒带轮的结构的图。
图5(a)～(c)是表示实施方式所涉及的离合器导向器和离合器体的结构 的图。
图6(a)～(c)是表示实施方式所涉及的构成离合器体的离合器部的结构的图。
图7是表示实施方式所涉及的滚筒洗衣机的结构的框图。
图8(a)～(c)是表示实施方式所涉及的负载量表、给水量表和洗涤剂量表的图。
图9是表示本实施方式所涉及的显示与负载量相对应的给水量和洗涤剂量的控制处理的流程图。
图10(a)和(b)是表示本实施方式所涉及的松散处理和负荷量检测处理的流程图。
图11是表示变更例所涉及的松散处理的流程图。
具体实施方式
以下，关于本发明的滚筒洗衣机的一个实施方式的不具有烘干功能的滚筒洗衣机，参照附图进行说明。
图1是表示滚筒洗衣机1的结构的侧面剖视图。
滚筒洗衣机1具备构成外观的壳体10。壳体10的前表面10a从中央部倾斜到上部，在倾斜的面上形成有洗涤物的投入口11。投入口11由自由开闭的门12遮盖。
在壳体10内，外槽20由多个减振器21弹性地支承。滚筒22自由旋转地配置于外槽20内。外槽20和滚筒22以后表面侧相对于水平方向放低的方式倾斜。由此，滚筒22以相对于水平方向倾斜的倾斜轴为中心进行旋转。外槽20和滚筒22的倾斜角度可以设为10～20度左右。外槽20的前表面的开口部20a和滚筒22的前表面的开口部22a与投入口11对置，并与投入口11一起由门12来关闭。在滚筒22的周壁上，形成有许多个脱水孔22b。进而，在滚筒22的内周面上，在圆周方向上以大致相等的间隔设有三个提升筋23。
旋转体24自由旋转地配置于滚筒22的后部。旋转体24具有大致圆盘形状。在旋转体24的表面上，形成有从中央部放射状延伸的多个突状部24a。旋转体24与滚筒22同轴旋转。
在外槽20的后方配置有产生驱动滚筒22和旋转体24的转矩的驱动部30。 驱动部30在洗涤过程以及漂洗过程时，使滚筒22和旋转体24往同一方向以不同的旋转速度进行旋转。
具体地说，驱动部30使滚筒22以施加给滚筒22内的洗涤物的离心力变得比重力小的旋转速度进行旋转，并使旋转体24以比滚筒22的旋转速度快的旋转速度进行旋转。另一方面，驱动部30在脱水过程时，滚筒22和旋转体24以施加给滚筒22内的洗涤物的离心力变得远远大于重力的旋转速度一体旋转。驱动部30的详细的结构在后面进行说明。
在外槽20的底部形成有排水口部20b。在排水口部20b中设置有排水阀40。排水阀40与排水软管41连接。当排水阀40打开时，存积于外槽20内的水就会通过排水软管41向机外排出。
在壳体10内的前方上部配置有洗涤剂盒50。收容洗涤剂的洗涤剂容器50a以从前方自由抽出的方式收容于洗涤剂盒50中。洗涤剂盒50通过给水软管52与配置在壳体10内的后方上部的给水阀51连接。此外，洗涤剂盒50通过注水管53与外槽20的上部连接。当给水阀51打开时，通过给水软管52、洗涤剂盒50以及注水管53将来自水龙头的自来水供给外槽20内。此时，收容在洗涤剂容器50a中的洗涤剂顺着水流供给到外槽20内。
接着，关于驱动部30的结构进行详细说明。
图2以及图3是表示驱动部30的结构的剖视图。图2表示驱动部30的驱动形态被切换到双轴驱动形态的状态，图3表示驱动部30的驱动形态被切换到单轴驱动形态的状态。图4是表示翼带轮510和滚筒带轮610的结构的图。图4(a)是从前方观察翼带轮510的图，图4(b)是从后方观察滚筒带轮610的图。图5是表示离合器导向器710和离合器体720的结构的图。图5(a)是离合器导向器710和离合器体720的侧面剖视图，图5(b)是从前方观察离合器导向器710的图，图5(c)是从后方观察离合器导向器710的图。图6是表示构成离合器体720的离合器部721的结构的图。图6(a)是从前方观察离合器部721的图，图6(b)是离合器部721的侧面图，图6(c)是从后方观察离合器部721的图。
驱动部30包括：驱动电机100、第一旋转轴200、第二旋转轴300、轴承单元400、翼减速机构500、滚筒减速机构600、以及离合器机构部700。
驱动电机100产生用于驱动滚筒22和旋转体24的转矩。驱动电机100是 例如外转子型DC无刷电机，在壳体110内与转子连接的电机轴120从壳体110向后方延伸。
第一旋转轴200具有中空形状。在第一旋转轴200的内部、前部以及后部，分别设置第一滑动轴承211和第二滑动轴承212，在前端部设有机械密封件213。
第二旋转轴300内包于第一旋转轴200。第二旋转轴300的前部从第一旋转轴200向前方突出，第二旋转轴300的后部从第一旋转轴200向后方突出。第二旋转轴300的外周面由第一滑动轴承211和第二滑动轴承212承接，在第一旋转轴200内顺利地进行旋转。此外，通过机械密封件213防止水侵入第二旋转轴300和第一旋转轴200之间。
在轴承单元400中，在中央部设有大致圆筒状的轴承部410。在轴承部410的内部，在前部以及后部，分别设有第一滚动轴承411和第二滚动轴承412，在前端部设有机械密封件413。第一旋转轴200的外周面由第一滚动轴承411和第二滚动轴承412承接，在轴承部410内顺利地进行旋转。此外，通过机械密封件413防止水侵入第一旋转轴200和轴承部410之间。进而，在轴承单元400，在轴承部410的周围形成有固定凸缘部420。
轴承单元400通过固定凸缘部420，以螺钉紧固等固定方法固定在外槽20的后表面。在轴承单元400已安装于外槽20的状态下，第二旋转轴300和第一旋转轴200进入外槽20的内部。滚筒22通过未图示的螺钉固定在第一旋转轴200，旋转体24通过螺钉310固定在第二旋转轴300。
翼减速机构500包括翼带轮510、第一电机带轮520、以及翼传动带530。驱动电机100的旋转根据由翼带轮510和第一电机带轮520的外径比确定的减速比而被减速，并传递给第二旋转轴300。
翼带轮510通过第二旋转轴300的后端部被自由旋转地支承。在翼带轮510上，在中央部形成有第二旋转轴300所插入的插入孔511，在该插入孔511和第二旋转轴300之间夹有前后两个滚动轴承512、513。翼带轮510通过两个滚动轴承512、513，相对于第二旋转轴300顺利地进行旋转。
如图4(a)所示，在翼带轮510的前表面上形成有环状的被卡合凹部514。在被卡合凹部514的外周面上遍及整周地形成有齿条515。通过安装于第二旋转轴300的后端部的固定螺钉320，防止翼带轮510向后方脱落。
第一电机带轮520安装于驱动电机100的电机轴120的前端部。翼传动带 530架设在翼带轮510和第一电机带轮520之间。
滚筒减速机构600包括滚筒带轮610、第二电机带轮620、以及滚筒传动带630。驱动电机100的旋转根据由滚筒带轮610和第二电机带轮620的外径比确定的减速比被减速，并传递给第一旋转轴200。
滚筒带轮610形成为前表面打开的盘状，包括带轮部611和比带轮部611外径小的固定部612。由于带轮部611的外径，即滚筒带轮610的外径比翼带轮510的外径大，所以由滚筒减速机构600产生的减速比比由翼减速机构500产生的减速比更大。
在固定部612，在中央部形成有插入孔613。第一旋转轴200的后端部插入到插入孔613并通过使用齿条压入等规定的固定方法固定于插入孔613。由此，滚筒带轮610固定在第一旋转轴200的后端部。
如图4(b)所示，在固定部612的后表面，在插入孔613的外圆周形成有环状的被卡合凹部614。在被卡合凹部614的外周面遍及整周地形成有齿条615。
在向后方凹陷的凹部616即带轮部611的内部，收容有轴承部410的后端部。由此，在驱动部30的前后方向上，轴承单元400和滚筒带轮610相重叠。
第二电机带轮620安装于驱动电机100的电机轴120的根部。滚筒传动带630架设于滚筒带轮610和第二电机带轮620之间。
离合器机构部700在双轴驱动形态和单轴驱动形态之间切换驱动部30的驱动形态，其中，双轴驱动形态是通过以可将翼带轮510的旋转传递至第二旋转轴300的方式连结第二旋转轴300和翼带轮510，从而使滚筒22和旋转体24以相互不同的旋转速度旋转的驱动形态；单轴驱动形态是通过以可将滚筒带轮610的旋转传递至第二旋转轴300的方式连结第二旋转轴300和滚筒带轮610，从而使滚筒22和旋转体24以同一旋转速度旋转的驱动形态。双轴驱动形态相当于本发明的第一驱动形态，单轴驱动形态相当于本发明的第二驱动形态。
离合器机构部700包括离合器导向器710、离合器体720、离合器杆730、杆支承部740、以及离合器驱动装置750。
离合器导向器710和离合器体720配置于并排在第一旋转轴200和第二旋转轴300的轴线方向上的滚筒带轮610和翼带轮510之间。
如图5所示，离合器导向器710具有前表面打开的圆筒形状。在离合器导向器710的外周面的整个面，遍及整周地形成有齿条711。在离合器导向器710 的中央部，形成有插入孔712。插入孔712形成有键槽713。离合器导向器710通过插入孔712被第二旋转轴300穿过，并使用键槽713和未图示的键进行固定的方法固定于第二旋转轴300。由此，离合器导向器710与第二旋转轴300一起旋转。
如图5(a)所示，离合器体720包括离合器部721、包围部722、以及滚动轴承723。离合器部721具有前表面和后表面打开的圆筒形状。如图6所示，在离合器部721的外周面，在前部和后部遍及整周地分别形成有前齿条724和后齿条725。
离合器部721的内径大致与离合器导向器710的外径相等，离合器部721的前后尺寸设为比离合器导向器710的前后尺寸更大。在离合器部721的内部插入有离合器导向器710。在离合器部721的内周面，遍及整周地形成有内齿条726，该内齿条726与离合器导向器710的齿条711咬合。内齿条726的前后尺寸设为比齿条711的前后尺寸更大。
通过使内齿条726和齿条711卡合，离合器部721成为能相对于离合器导向器710，即固定有离合器导向器710的第二旋转轴300向第二旋转轴300的轴线方向移动并且能与第二旋转轴300一同旋转的状态。
包围部722形成为圆环状，并以使离合器部721自由旋转的方式包围离合器部721的中央部。在离合器部721和包围部722之间，设有滚动轴承723。滚动轴承723通过大小两个扣环727、728，以禁止前后移动的方式固定。离合器部721通过滚动轴承723相对于包围部722顺利地旋转。
离合器杆730以其上端部能够相对于包围部722旋转的方式与包围部722连结。此外，离合器杆730由设置在杆支承部740的支轴741转动自由地支承。
离合器驱动装置750包括促动器751和操作杆752。促动器751使操作杆752向前后移动。操作杆752与离合器杆730的下端部连结。离合器杆730的下端部可以相对于操作杆752进行旋转。
杆支承部740和离合器驱动装置750固定于未图示的安装板，该安装板安装于轴承单元400或外槽20。
需要说明的是，离合器杆730、杆支承部740以及离合器驱动装置750构成用于使离合器体720移动的移动机构部。
在驱动部30的驱动形态从单轴驱动形态被切换向双轴驱动形态的情况下， 如图2所示，操作杆752从促动器751的内部向前方推出。离合器杆730的下端部被操作杆752推动向前方移动，离合器杆730以支轴741为中心向后方旋转。离合器杆730的上端部向后方移动，离合器体720被离合器杆730的上端部推动向后方移动。由此，离合器部721的后齿条725和翼带轮510的齿条515卡合。
当后齿条725和齿条515卡合时，由于离合器部721和翼带轮510在旋转方向上被固定，所以成为能将翼带轮510的旋转经由离合器部721和离合器导向器710传递给第二旋转轴300的状态。在这样的状态下，当驱动电机100进行旋转时，该旋转经由翼减速机构500传递给第二旋转轴300，固定于第二旋转轴300的旋转体24进行旋转。旋转体24以驱动电机100的旋转速度按照由翼减速机构500产生的减速比而降低后的旋转速度进行旋转。此外，驱动电机100的旋转经由滚筒减速机构600传递给第一旋转轴200，固定于第一旋转轴200的滚筒22进行旋转。滚筒22以驱动电机100的旋转速度按照由滚筒减速机构600产生的减速比而降低后的旋转速度进行旋转。如上所述，由于滚筒减速机构600产生的减速比比翼减速机构500产生的减速比更大，所以旋转体24以比滚筒22快的旋转速度，与滚筒22同向旋转。
此处，离合器部721与翼带轮510一同进行旋转，但是由于离合器杆730与以自由旋转的状态连结离合器部721的包围部722连结，因而即使离合器部721进行旋转，该旋转也几乎不会传递给离合器杆730。
另一方面，在驱动部30的驱动形态从双轴驱动形态被切换为单轴驱动形态的情况下，如图3所示，操作杆752缩进促动器751的内部。即操作杆752向后方移动。离合器杆730的下端部被操作杆752拉动向后方移动，离合器杆730以支轴741为中心向前方旋转。离合器杆730的上端部向前方移动，离合器体720被离合器杆730的上端部推动向前方移动。由此，离合器部721的前齿条724和滚筒带轮610的齿条615卡合。
当前齿条724和齿条615卡合时，由于离合器部721和滚筒带轮610在旋转方向上被固定，因而成为能将滚筒带轮610的旋转经由离合器部721和离合器导向器710传递给第二旋转轴300的状态。在这样的状态下，当驱动电机100进行旋转时，该旋转经由滚筒减速机构600传递给第一旋转轴200和第二旋转轴300，从而滚筒22和旋转体24进行旋转。滚筒22和旋转体24以驱动电机 100的旋转速度按照由滚筒减速机构600产生的减速比而降低后的旋转速度同向一体旋转。
需要说明的是，在单轴驱动形态中，当驱动电机100进行旋转时，翼带轮510也伴随着该旋转而进行旋转。但是，翼带轮510仅仅相对于第二旋转轴300进行空转，翼带轮510的旋转不会传递给第二旋转轴300。
图7是表示滚筒洗衣机1的结构的框图。
滚筒洗衣机1除了上述的结构之外，具备：控制部801、存储部802、操作部803、水位传感器804、电流检测部805、显示部806、电机驱动部807、给水驱动部808、排水驱动部809、离合器驱动部810以及门锁装置811。
操作部803包括电源按钮803a、开始按钮803b、以及模式选择按钮803c。电源按钮803a为用于接通以及阻断滚筒洗衣机1的电源的按钮。开始按钮803b为用于开始洗涤运转的按钮。模式选择按钮803c为用于从洗涤运转的多个洗涤模式中选择任意的洗涤模式的按钮。操作部803将与用户所操作的按钮对应的输入信号输出给控制部801。
水位传感器804检测外槽20内的水位，将与检测到的水位相对应的水位检测信号输出给控制部801。
显示部806包括模式显示部806a、过程显示部806b、给水量显示部806c、以及洗涤剂量显示部806d。模式显示部806a显示由模式选择按钮803c选择的洗涤模式。过程显示部806b显示洗涤运转过程中正在进行的过程。给水量显示部806c显示根据滚筒22内的洗涤物的负载量确定的向外槽20内提供的水的量，即给水量。洗涤剂量显示部806d显示根据滚筒22内的洗涤物的负载量确定的向滚筒22内提供的洗涤剂的量，即洗涤剂量。
电机驱动部807根据来自控制部801的控制信号，向驱动电机100提供驱动电流。电机驱动部807具有检测驱动电机100的旋转速度的速度传感器、变频电路等，调整驱动电流，使得驱动电机100以由控制部801设定的旋转速度进行旋转。
电流检测部805检测由电机驱动部807提供给驱动电机100的驱动电流，并将与驱动电流的大小相对应的检测信号输出给控制部801。
给水驱动部808根据来自控制部801的控制信号，向给水阀51提供驱动电流。排水驱动部809根据来自控制部801的控制信号，向排水阀40提供驱动电 流。
离合器驱动部810根据来自控制部801的控制信号，向促动器751提供驱动电流。
门锁装置811根据来自控制部801的控制信号，进行门12的上锁以及解锁。
存储部802包括EEPROM、RAM等。在存储部802，存储有用于执行各种洗涤模式的洗涤运转的程序。此外，在存储部802，存储有用于执行这些程序的各种参数、各种控制标记。
进而，存储部802包括负载量表802a、给水量表802b、以及洗涤剂量表802c。图8(a)、(b)以及(c)是分别表示负载量表802a、给水量表802b以及洗涤剂量表802c的图。
如图8(a)所示，在负载量表802a中，存储有多个负载量和与各负载量相对应的第二电流值和第一电流值的差值的范围。第一电流值为使滚筒22以第一贴附速度进行旋转时提供给驱动电机100的驱动电流的值。第一贴附速度为施加给滚筒22内的洗涤物的离心力比重力大，并且能够使洗涤物贴在滚筒22的内周面的旋转速度。第二电流值为使滚筒22以比第一贴附速度快的第二贴附速度进行旋转时提供给驱动电机100的驱动电流的值。此外，第一贴附速度和第二贴附速度相当于本发明的第一旋转速度。
在使滚筒22以第一贴附速度或第二贴附速度进行旋转的情况下，由于负载量越多，施加给滚筒22的旋转负载越大从而施加给驱动电机100的旋转负载越大，因而第一电流值和第二电流值越大。在负载量只增加了一定量的情况下，第二电流值的增加量比第一电流值的增加量多。因此，负载量越多第二电流值和第一电流值的差值越大。在负载量表802a中，差值越大，则对应的负载量的值越大。与各差值的范围相对应的负载量预先通过进行试验等来确定。
如图8(b)所示，在给水量表802b中，存储有多个负载量、以及与各负载量相对应的给水量。由于负载量越多，洗涤就需要越多的水量，因此在给水量表802b中，负载量的值越大，则对应的给水量的值越大。
如图8(c)所示，在洗涤剂量表802c中，存储有多个负载量、以及与各负载量相对应的洗涤剂量。由于负载量越多，洗涤就需要越多的洗涤剂，因此在洗涤剂量表802c中，负载量的值越大，则相对应的洗涤剂量的值越大。
控制部801基于来自操作部803、水位传感器804、以及电流检测部805等 的各个信号，根据存储于存储部802的程序，对显示部806、电机驱动部807、给水驱动部808、排水驱动部809、离合器驱动部810、以及门锁装置811等进行控制。
滚筒洗衣机1进行用户通过模式选择按钮803c选择的洗涤模式的洗涤运转。在洗涤运转中，按顺序执行洗涤过程、中间脱水过程、漂洗过程以及最终脱水过程。此外，根据洗涤模式，有时候会进行两次以上中间脱水过程和漂洗过程。
在洗涤过程和漂洗过程中，驱动部30的驱动形态被切换为双轴驱动形态。在外槽20内存积水至未到投入口11的下缘的规定水位，使得滚筒22内的洗涤物浸到水中，在该状态下，驱动电机100交替进行正转和反转。由此，滚筒22和旋转体24在旋转体24的旋转速度比滚筒22的旋转速度快的状态下，交替进行正转和反转。此时，滚筒22以作用于洗涤物的离心力变得比重力小的旋转速度进行旋转。
滚筒22内的洗涤物由提升筋23举起落下，在滚筒22内翻滚。由此，洗涤物被摔到滚筒22的内周面。除此之外，在滚筒22的后部，洗涤物与旋转的旋转体24的突状部24a相接触，洗涤物通过突状部24a被摩擦、搅拌。由此，洗涤物被清洗或漂洗。
这样，在进行洗涤和漂洗时，由于除了由滚筒22的旋转产生的机械力，还对洗涤物赋予由旋转体24产生的机械力，因而能期待清洗性能的提高。在中间脱水过程和最终脱水过程中，驱动部30的驱动形态被切换为单轴驱动形态。驱动电机100，即滚筒22和旋转体24以使作用于滚筒22内的洗涤物的离心力远远大于重力的旋转速度一体旋转。洗涤物通过离心力的作用，被按压到滚筒22的内周面进行脱水。
这样，在脱水时，由于滚筒22和旋转体24一体旋转，因此能够在使贴在滚筒22上的洗涤物不被旋转体24搅拌的情况下，良好地将洗涤物脱水。
此外，在本实施方式的滚筒洗衣机1中，当洗涤运转开始时，在进行洗涤过程之前，首先，检测滚筒22内的洗涤物的负载量，并基于检测到的负载量来确定给水量和洗涤剂量，确定的给水量和洗涤剂量分别由给水量显示部806c和洗涤剂量显示部806d显示。
图9为表示显示与负载量相对应的给水量和洗涤剂量的控制处理的流程图。图10(a)为表示松散处理的流程图，图10(b)为表示负荷量检测处理的流程 图。
当洗涤运转开始时，开始图9的控制处理。在开始洗涤运转的最初，驱动部30的驱动形态被切换为单轴驱动形态。
参照图9，控制部801首先使促动器751工作使得离合器体720向翼带轮510侧移动，将驱动部30的驱动形态从单轴驱动形态切换为双轴驱动形态(S11)。
当将洗涤物投入到滚筒22内时，用户有时候会将洗涤物一件一件投入到滚筒22内，有时候会将多个洗涤物团成一团投入到滚筒22内。在洗涤物被团成一团投入的情况下，保持该状态不变，当为了检测负载量，加快滚筒22的旋转直到旋转速度达到洗涤物贴在滚筒22的内周面的旋转速度时，洗涤物容易集中贴附在滚筒22的内周面的某一位置。
因此，控制部801在进行检测负载量之前，进行图10(a)所示的松散处理(S12)。
参照图10(a)，控制部801使驱动电机100右旋转(S101)，以便使滚筒22以翻滚速度进行右旋转。翻滚速度是使作用于洗涤物的离心力比重力小并使洗涤物能在滚筒22内翻滚的旋转速度。例如，在滚筒22的内径为520mm左右的情况下，翻滚速度设定为45rpm。翻滚速度相当于本发明的第二旋转速度。
当经过规定的工作时间时(S102：YES)，控制部801停止向驱动电机100通电，使滚筒22暂时停止(S103)。然后马上，控制部801使驱动电机100左旋转(S104)，以便使滚筒22以翻滚速度进行左旋转。
当经过规定的工作时间时(S105：YES)，控制部801停止向驱动电机100通电，使滚筒22停止(S106)。然后，控制部801判断滚筒22是否进行了规定次数的左右旋转(S107)。如果左右旋转的次数没有达到规定次数的话(S107：NO)，控制部801将处理返回至步骤S101，使滚筒22再次交替进行右旋转和左旋转(S101～S106)。这样，滚筒22反复进行右旋转和左旋转，洗涤物反复进行右旋的翻滚和左旋的翻滚，直到滚筒22的左右旋转进行了规定的次数为止。由此，在滚筒22内存在团成一团的洗涤物的情况下，团成一团的洗涤物被松散开。进而，此时，驱动部30的驱动形态已经被切换为双轴驱动形态，在滚筒22的后部，旋转体24相对于滚筒22进行旋转。因此，洗涤物也被旋转体24搅拌，团成一团的洗涤物变得更容易松散开。
当左右旋转的次数达到规定次数时(S107：YES)，控制部801结束松散处 理。
返回图9，当松散处理结束时，控制部801使促动器751工作而使离合器体720向滚筒带轮610侧移动，使驱动部30的驱动形态从双轴驱动形态切换为单轴驱动形态(S13)。然后，控制部801进行图10(b)所示的负荷量检测处理(S14)。
参照图10(b)，控制部801使驱动电机100单向旋转(S201)，使得滚筒22以第一贴附速度进行单向旋转。第一贴附速度为使作用于洗涤物的离心力比重力大并使洗涤物能贴在滚筒22的内周面的旋转速度。例如，在滚筒22的内径为520mm左右的情况下，第一贴附速度设定为65rpm。由于通过刚才的松散处理，滚筒22内的洗涤物被松散开，因而当滚筒22的旋转加速到第一贴附速度时，洗涤物容易分散并贴在滚筒22的整个内周面上。
接着，控制部801在滚筒22以第一贴附速度进行旋转时，通过电流检测部805检测提供给驱动电机100的驱动电流的值，并作为第一电流值存储于存储部802(S202)。
控制部801加快驱动电机100的旋转速度，使驱动电机100旋转(S203)，以便使滚筒22以比第一贴附速度更快的第二贴附速度单向旋转。例如，在滚筒22的内径为520mm左右的情况下，第二贴附速度设定为165rpm。然后，控制部801在滚筒22以第二贴附速度进行旋转时，通过电流检测部805检测提供给驱动电机100的驱动电流的值，并作为第二电流值存储于存储部802(S204)。
控制部801求出存储于存储部802的第二电流值和第一电流值的差值，参照负载量表802a，由求出的差值确定负载量(S205)。然后，控制部801在停止向驱动电机100通电，使滚筒22停止之后(S206)，结束负荷量检测处理。
此处，在进行检测负载量时，驱动部30的驱动形态已经切换为单轴驱动形态，滚筒22和旋转体24一体旋转。即，旋转体24相对于滚筒22不旋转。
当假设驱动电机100在双轴驱动形态下旋转时，由于旋转体24相对于滚筒22进行旋转，因而在滚筒22的后部，存在一部分洗涤物与旋转的旋转体24相接触，被旋转体24摩擦的可能。滚筒22以洗涤物贴在滚筒22的内周面的旋转速度进行旋转，因为该旋转速度比洗涤过程、漂洗过程、之前的松散处理的旋转速度更快，因此，旋转体24的旋转速度也变快。因此，存在与旋转体24接触的洗涤物发生布损伤的可能。
在本实施方式中，由于滚筒22和旋转体24一体旋转，旋转体24相对于滚 筒22不旋转，因此洗涤物不会被旋转速度快的旋转体24摩擦，不会产生因旋转体24而导致的洗涤物的布损伤。
此外，也可以不像本实施方式那样基于不同的旋转速度下的两个驱动电流值的差值，而是基于一个驱动电流值来确定负载量。然而，驱动电流值存在因外部商用电源的电压变动、制品的制造误差而产生差别的可能。当像本实施方式那样取得两个驱动电流值的差值时，因为能将这样的差别抵消，所以能提高检测负载量的精度。
再次返回图9，控制部801基于确定后的负载量，分别参照给水量表802b和洗涤剂量表802c，确定给水量和洗涤剂量(S15)。然后，控制部801将确定后的给水量显示在给水量显示部806c上，并且将确定后的洗涤剂量显示在洗涤剂量显示部806d上(S16)。然后，控制部801结束图9的控制处理。
用户对由洗涤剂量显示部806d显示的洗涤剂量进行确认，并将该量的洗涤剂投入洗涤剂盒50。进而，控制部801在洗涤过程和漂洗过程中，向外槽20内只进行确定的给水量的给水。
<实施方式的效果>
根据本实施方式，在检测到滚筒22内的洗涤物的负载量时，驱动部30以单轴驱动形态进行工作。在单轴驱动形态下，由于滚筒22和旋转体24一体旋转，旋转体24相对于滚筒22不旋转，因而洗涤物不会被旋转的旋转体24摩擦。因此，能不担心由旋转体24导致的洗涤物的布损伤进行检测负载量。
进而，根据本实施方式，滚筒洗衣机使滚筒22以洗涤物能贴在滚筒22的内周面的旋转速度进行旋转，并基于该旋转时施加给滚筒22的旋转负载来检测负载量。更具体地说，在本实施方式中，基于第二贴附速度下检测到的驱动电机100的驱动电流值和第一贴附速度下检测到的驱动电机100的驱动电流值的差值来检测负载量。
这样，在采用为了检测负载量而使滚筒22以洗涤物能贴在滚筒22的内周面的旋转速度进行旋转的结构的情况下，当采用在检测负载量时使驱动部30以双轴驱动形态进行工作的结构时，由于旋转体24以比进行洗涤过程、漂洗过程时更快的旋转速度进行旋转，因而更有可能产生洗涤物的布损伤。因此，在这样的结构中，当像本实施方式那样采用在检测负载量时使驱动部30以单轴驱动形态进行工作的结构时，因为不需要担心洗涤物的布损伤，所以更优选该结构。
进而，根据本实施方式，在检测负载量之前，驱动部30以双轴驱动形态进行工作，以便使滚筒22以洗涤物能在滚筒22内翻滚的翻滚速度进行旋转。由此，因为能在检测负载量之前将洗涤物松散开，所以在检测负载量时能将洗涤物分散贴附在滚筒22的内周面。因此，能抑制因洗涤物的集中贴附而导致的滚筒22偏心旋转，从而能精度良好地检测负载量。并且，由于洗涤物不仅通过滚筒22的旋转进行翻滚，还通过旋转体24被搅拌，因而团成一团的洗涤物变得更容易松散开。
<变更例>
图11是表示本变更例所涉及的松散处理的流程图。
在图11的松散处理中，与图10(a)的松散处理相比，在步骤S103的处理之后追加了步骤S111的处理，在步骤S106的处理之后追加了步骤S112的处理。
在本变更例中，电机驱动部807通过使驱动电机100的线圈短路，从而使作为电磁制动器之一的短路制动器作用于旋转的驱动电机100，对驱动电机100进行制动。通过制动驱动电机100，从而经由滚筒减速机构600和第一旋转轴200与驱动电机100连结的滚筒22被制动。电机驱动部807不仅作为本发明的电机驱动部发挥作用，还作为制动部发挥作用。
如图11所示，控制部801在使以翻滚速度进行右旋转的滚筒22停止时，停止对驱动电机100通电(S103)，并且通过电机驱动部807使电磁制动器工作(S111)。同样地，控制部801在使以翻滚速度进行右旋转的滚筒22停止时，停止对驱动电机100通电(S106)，并且通过电机驱动部807使电磁制动器工作(S112)。因此，由于滚筒22被制动而急速停止，因而此时向滚筒22内的洗涤物作用大的惯性力，使团成一团的洗涤物容易松散开。
<其它的变更例>
以上，就本发明的实施方式进行了说明，但是本发明不受上述实施方式等的任何限制，此外，本发明的实施方式也可以进行上述之外的各种变更。
例如，在上述实施方式中，基于在滚筒22进行旋转时提供给驱动电机100的驱动电流的大小检测负载量。然而，通过使滚筒22进行旋转而进行的检测负载量的方法并不局限于此。例如，也可以在使滚筒22旋转之后，停止向驱动电机100通电，基于滚筒22直到停止所需的时间即滚筒22惰性旋转的时间来检测负载量。进而，在上述实施方式中，基于在滚筒22以洗涤物贴在滚筒22的 内周面的旋转速度进行旋转时施加给滚筒22的旋转负载来检测负载量，也可以基于在滚筒22的旋转加快到洗涤物贴在滚筒22的内周面的旋转速度时施加给滚筒22的旋转负载来检测负载量。在这种情况下，旋转负载能通过提供给驱动电机的电流的大小、加速所需要的时间而检测到。
此外，在上述实施方式的松散处理中，使滚筒22左右交替旋转。但是，也可以使滚筒22向左右方向中的某一个方向旋转。
进而，在上述实施方式中，在负荷量检测处理之前先进行松散处理。但是，也能采用不进行松散处理的结构。在这种情况下，控制部801使驱动部30的驱动形态保持单轴驱动形态，并在这种状态下使驱动电机100旋转以检测负载量。
进而，在上述变更例的松散处理中，通过使电磁制动器对驱动电机100作用从而对滚筒22进行制动。但是，也可以通过带式制动器等机械式的制动机构使滚筒22制动。
进而，在上述实施方式中，滚筒22以相对于水平方向倾斜的倾斜轴为中心进行旋转。然而，滚筒洗衣机1也可以采用滚筒22以水平轴为中心进行旋转的结构。
进而，上述实施方式的滚筒洗衣机1不具备烘干功能，但本发明也能用于具备烘干功能的滚筒洗衣机，即滚筒式烘干洗衣机。
此外，本发明的实施方式在权利要求书示出的技术思想的范围内可以适当地进行各种变更。
附图标记说明
10：壳体；20：外槽；22：滚筒；24：旋转体；24a：突状部；30：驱动部；100：驱动电机；801：控制部；805：电流检测部；807：电机驱动部(制动部)

Claims (5)

  1. 一种滚筒洗衣机，其特征在于，具备：
    外槽，配置在壳体内；
    滚筒，配置在所述外槽内，并能以水平轴或相对于水平方向倾斜的倾斜轴为中心进行旋转；
    旋转体，配置在所述滚筒的后部，表面具有与洗涤物接触的突状部；
    驱动部，能够以第一驱动形态和第二驱动形态进行工作，其中，第一驱动形态是使所述滚筒和所述旋转体以相互不同的旋转速度进行旋转的驱动形态，第二驱动形态是使所述滚筒和所述旋转体以相同的旋转速度一体旋转的驱动形态；以及
    控制部，
    所述控制部检测所述滚筒内的洗涤物的负载量，并且在检测该负载量时使所述驱动部以所述第二驱动形态进行工作。
  2. 根据权利要求1所述的滚筒洗衣机，其特征在于，
    所述控制部
    使所述驱动部以所述第二驱动形态进行工作，以便使所述滚筒以洗涤物至少能贴在所述滚筒的内周面的第一旋转速度进行旋转，
    基于使所述滚筒以所述第一旋转速度进行旋转时施加给所述滚筒的旋转负载，来检测所述负载量。
  3. 根据权利要求2所述的滚筒洗衣机，其特征在于，
    所述驱动部包括产生使所述滚筒和所述旋转体旋转的转矩的驱动电机，
    所述滚筒洗衣机还具备向所述驱动电机提供驱动电流的电机驱动部和检测所述驱动电流的电流检测部，
    所述控制部
    使所述驱动电机以所述第二驱动形态进行工作，以便使所述滚筒以所述第一旋转速度进行旋转，
    基于使所述滚筒以所述第一旋转速度进行旋转时由所述电流检测部检测到的所述驱动电流的大小，来检测所述负载量。
  4. 根据权利要求2或3所述的滚筒洗衣机，其特征在于，
    所述控制部在使所述驱动部以所述第二驱动形态进行工作以检测所述负载量之前，使所述驱动部以所述第一驱动形态进行工作，以便使所述滚筒以洗涤物能在所述滚筒内翻滚的第二旋转速度进行旋转。
  5. 根据权利要求4所述的滚筒洗衣机，其特征在于，
    还具备用于对旋转的所述滚筒进行制动的制动部，
    所述控制部在使以所述第二旋转速度进行旋转的所述滚筒停止时通过所述制动部对所述滚筒进行制动。
PCT/CN2015/088438 2014-08-29 2015-08-28 滚筒洗衣机 WO2016029881A1 (zh)

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