WO2015196775A1 - Machine à laver à tambour - Google Patents

Machine à laver à tambour Download PDF

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Publication number
WO2015196775A1
WO2015196775A1 PCT/CN2014/095723 CN2014095723W WO2015196775A1 WO 2015196775 A1 WO2015196775 A1 WO 2015196775A1 CN 2014095723 W CN2014095723 W CN 2014095723W WO 2015196775 A1 WO2015196775 A1 WO 2015196775A1
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WO
WIPO (PCT)
Prior art keywords
drum
motor
driving
drive
rotation
Prior art date
Application number
PCT/CN2014/095723
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English (en)
Chinese (zh)
Inventor
辻贵裕
田中启之
Original Assignee
海尔亚洲国际株式会社
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 海尔亚洲国际株式会社, 青岛海尔洗衣机有限公司 filed Critical 海尔亚洲国际株式会社
Publication of WO2015196775A1 publication Critical patent/WO2015196775A1/fr

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 

Definitions

  • the present invention relates to a drum type washing machine.
  • the drum type washing machine can be continuously performed from washing to drying, or can be washed without drying.
  • a drum type washing machine rotates a horizontal axis type drum in an outer tank in which water is stored in the bottom, and lifts the laundry by a baffle provided in the drum and drops it, by dropping the laundry The laundry is washed to the inner peripheral surface of the drum (refer to Patent Document 1).
  • the drum type 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 detergency performance is liable to be lowered.
  • a structure in which a stirring body is provided behind the drum and the drum and the stirring body are rotated at different rotation speeds during washing and rinsing can be employed.
  • a structure in which the rotation of the drive motor is decelerated by the speed reduction mechanism using the gear and transmitted to the drum can be further employed.
  • Patent Document 1 JP-A-2013-240577
  • the present invention has been made in view of the above problems, and an object of the invention is to reduce a rotation of a drive motor by a speed reduction mechanism using a gear to reduce the rotation of the drive motor and transmit the same to the drum. Abnormal sound.
  • a drum type washing machine includes an outer tub that is disposed in a casing, and a drum that is disposed in the outer tub and that is rotatable about a horizontal axis or an inclined axis that is inclined with respect to a horizontal direction.
  • a driving portion including a driving motor and a speed reducing mechanism that uses a gear to decelerate and transmit the rotation of the driving motor to the drum; a motor driving portion that supplies a driving current to the driving motor; and a control portion that controls the motor Drive unit.
  • the control unit controls the motor drive unit to gradually reduce the drive current supplied to the drive motor when the rotation of the drum decelerated by the speed reduction mechanism is stopped.
  • the motor drive unit may be configured to adjust a drive current according to a rotational speed of the drive motor set by the control unit.
  • the control unit sets the rotational speed of the drive motor to decrease the predetermined speed only for each predetermined time when the rotation of the drum after the deceleration mechanism is decelerated.
  • a rotating body may be further provided, and the rotating body is disposed at a rear portion of the drum and has a protruding portion that comes into contact with the laundry on the surface.
  • the driving unit further includes a configuration of a clutch mechanism unit that switches the driving form of the driving unit between the two-axis driving mode and the one-axis driving mode, and the two-axis driving mode is adopted by a speed reduction mechanism that decelerates the rotation of the drive motor and transmits the rotation to the drum, and causes the drum and the rotating body to respectively rotate at different rotation speeds, wherein the one-axis drive mode is not decelerated by the The mechanism decelerates the rotation of the drive motor and transmits it to the drum, and integrally rotates the drum and the rotating body at the same rotational speed.
  • the control unit is on the two axes In the driving mode, when the rotation of the drum is stopped, the motor driving unit is controlled to gradually reduce the driving current supplied to the driving motor, and in the one-axis driving mode, the rotation of the drum is stopped. At this time, the motor drive unit is controlled to immediately stop the supply of the drive current to the drive motor.
  • the driving form of the driving unit is switched to the two-axis driving mode, and not only the mechanical force generated by the rotation of the drum but also the mechanical force generated by the rotating body can be applied to the laundry.
  • the driving form is switched to the one-shaft driving mode, and the laundry attached to the drum can be stirred without being rotated, and the laundry can be dehydrated satisfactorily.
  • the motor drive unit in the two-axis drive mode in which the abnormal noise of the speed reduction mechanism is concerned, when the rotation of the drum is stopped, the motor drive unit is controlled to gradually reduce the drive current supplied to the drive motor, thereby reducing the drive current.
  • the abnormal noise of the speed reduction mechanism On the other hand, in the one-axis drive mode in which the abnormal noise of the speed reduction mechanism is not concerned, when the rotation of the drum is stopped, the motor drive unit is controlled to immediately stop the supply of the drive current to the drive motor, so that it is possible to prevent the drive from being stopped. The time required for the rotation of the desired drum to stop is prolonged.
  • the abnormal noise emitted from the speed reduction mechanism can be reduced when the drum is stopped.
  • FIG. 1 is a side cross-sectional view showing a configuration of a drum type washing machine according to an embodiment.
  • FIG. 2 is a cross-sectional view showing a configuration of a drive unit according to an embodiment.
  • FIG 3 is a cross-sectional view showing a configuration of a drive unit according to an embodiment.
  • FIG. 4 is a front view of a rotor showing a configuration of a rotor of a drive motor according to an embodiment.
  • Fig. 5 is an enlarged perspective view showing a rear portion of a rack-forming bearing unit according to the embodiment.
  • FIG. 6 is a view showing a configuration of a clutch body of a clutch mechanism portion according to the embodiment.
  • FIG. 7 is a block diagram showing a configuration of a drum type washing machine according to an embodiment.
  • FIG. 8 is a flowchart showing a stop control process according to the embodiment.
  • FIG. 9 is a view schematically showing a change in the set speed and a change in the actual rotational speed of the drive motor in the case where the stop control process is performed according to the embodiment.
  • FIG. 10 is a view schematically showing a change in the actual rotational speed of the drive motor when the stop control process is performed in the case where the load amount is large and the load amount is small in the embodiment.
  • drum type washing machine which does not have a drying function as one embodiment of the drum type washing machine of the present invention will be described with reference to the drawings.
  • FIG. 1 is a side cross-sectional view showing a configuration of a drum type washing machine 1.
  • the drum type washing machine 1 is provided with a casing 10 that constitutes an appearance.
  • the front surface 10a of the casing 10 is inclined upward from the central portion, and an inlet 11 for washing 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 tub 20 and the drum 22 are inclined such that the rear side becomes lower with respect to 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 is set to about 10 to 20 degrees.
  • the opening 20a of the front surface of the outer tub 20 and the opening 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 inner peripheral surface of the drum 22, a plurality of dewatering holes 22b are formed.
  • three baffles 23 are provided at substantially equal intervals in the circumferential direction.
  • the agitating body 24 is rotatably disposed at the rear of the drum 22 .
  • the agitating body 24 has a substantially disk shape.
  • the agitating body 24 rotates coaxially with the drum 22.
  • the agitating body 24 corresponds to the rotating body of the present invention, and the vane 24a corresponds to the protruding portion of the present invention.
  • a drive unit 30 that generates torque for driving the drum 22 and the agitating body 24 is disposed behind the outer tub 20.
  • the drive unit 30 corresponds to the drive unit of the present invention.
  • the driving unit 30 rotates the drum 22 and the stirring body 24 at different rotation speeds in the same direction.
  • the drive unit 30 rotates the drum 22 at a rotational speed at which the centrifugal force applied to the laundry in the drum 22 is less than gravity, and causes the agitating body 24 to rotate faster than the rotational speed of the drum 22. The speed is rotated.
  • the drive unit 30 integrally rotates the drum 22 and the agitating body 24 with a centrifugal force that is applied to the laundry in the drum 22 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 tank 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 accommodated 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.
  • 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 one-axis driving mode.
  • FIG. 4 is a front view showing the rotor 110 of the structure of the rotor 110 of the drive motor 100.
  • FIG. 5 is an enlarged perspective view of the rear portion of the bearing unit 500 in which the rack 514 is formed.
  • 6(a) to 6(c) are views showing a configuration of a clutch body 610 of the clutch mechanism portion 600, which are respectively a front view, a right side view, and a rear view of the clutch body 610.
  • the drive unit 30 includes a drive motor 100, a wing shaft 200, a drum shaft 300, a planetary gear mechanism 400, a bearing unit 500, and a clutch mechanism portion 600.
  • the drive motor 100 generates torque for driving the agitating body 24 and the drum 22.
  • the wing shaft 200 is rotated by the torque of the drive motor 100, and the rotation is transmitted to the agitating body 24.
  • the planetary gear mechanism 400 decelerates the rotation of the wing shaft 200, that is, the rotation of the rotor 110 of the drive motor 100, and transmits it to the drum shaft 300.
  • the planetary gear mechanism 400 corresponds to the speed reduction mechanism of the present invention.
  • the drum shaft 300 rotates coaxially with the wing shaft 200 at a rotational speed decelerated by the planetary gear mechanism 400, and transmits the rotation to the drum 22.
  • the bearing unit 500 supports the wing shaft 200 and the drum shaft 300 in a freely rotatable manner.
  • the clutch mechanism unit 600 switches the driving form of the driving unit 30 between the two-axis driving mode in which the agitating body 24, that is, the wing shaft 200, and the rotational speed of the driving motor 100 are switched.
  • the rotation speed is rotated at an equal speed, and the drum 22, that is, the drum shaft 300, is rotated at a rotation speed decelerated by the planetary gear mechanism 40, and the one-axis drive mode is
  • the agitating body 24 and the drum 22, that is, the wing shaft 200, the drum shaft 300, and the planetary gear mechanism 400 can be integrally rotated at a rotation speed equal to that of the drive motor 100.
  • the drive motor 100 is an outer rotor type DC brushless motor including a rotor 110 and a stator 120.
  • the rotor 110 is formed in a bottomed cylindrical shape, and permanent magnets 111 are arranged on the inner circumferential surface thereof over the entire circumference.
  • a circular boss portion 112 is formed at a central portion of the rotor 110.
  • a boss hole 113 for fixing the wing shaft 200 is formed in the boss portion 112, and an annular engaged recess 114 is formed on the outer circumference of the boss hole 113.
  • the outer peripheral portion of the engaged recessed portion 114 has the uneven portion 114a over the entire circumference.
  • the stator 120 has a coil 121 at the outer peripheral portion.
  • a drive current is supplied to the coil 121 of the stator 120 from a motor drive unit to be described later, the rotor 110 rotates.
  • the drum shaft 300 has a hollow shape and encloses the wing shaft 200 and the planetary gear mechanism 400.
  • the center portion of the drum shaft 300 is bulged outward, and the bulged portion constitutes a housing portion of the planetary gear mechanism 400.
  • the planetary gear mechanism 400 includes a sun gear 410, an annular internal gear 420 surrounding the sun gear 410, a plurality of sets of planetary gears 430 interposed between the sun gear 410 and the internal gear 420, and a planet that rotatably holds the planetary gears 430 Carrier 440.
  • the sun gear 410 is fixed to the wing shaft 200, and the internal gear 420 is fixed to the drum shaft 300.
  • a set of planet gears 430 includes a first gear and a second gear that mesh with each other and rotate in opposite directions.
  • the planet carrier 440 includes a carrier shaft 441 that extends rearward.
  • the carrier shaft 441 is coaxial with the drum shaft 300, and is internally hollow to allow the wing shaft 200 to be inserted.
  • the rear end portion of the wing shaft 200 protrudes rearward from the carrier shaft 441 and is fixed to the boss hole 113 of the rotor 110.
  • a cylindrical bearing portion 510 is provided at the center portion. Inside the bearing portion 510, rollers 511 and 512 are provided at the front and rear portions, and a mechanical seal 513 is provided at the front end portion. The outer peripheral surface of the drum shaft 300 is supported by the rollers 511, 512 and smoothly rotates in the bearing portion 510. In addition, intrusion of water between the bearing portion 510 and the drum shaft 300 is prevented by the mechanical seal 513. As shown in FIG. 5, a rack 514 is formed on the inner surface of the rear end portion of the bearing portion 510 over the entire circumference.
  • a fixing flange portion 520 is formed around the bearing portion 510.
  • a mounting boss 521 is formed at a lower end portion of the fixing flange portion 520.
  • the bearing unit 500 is fixed to the rear of the outer tub 20 by a fixing method such as a fastening screw or the like.
  • a fixing method such as a fastening screw or the like.
  • the clutch mechanism unit 600 includes a clutch body 610, a clutch spring 620, a clutch lever 630, a lever support portion 640, a clutch drive device 650, a joint bar 660, and a mounting plate 670.
  • the clutch body 610 has a substantially disk shape.
  • An annular rack 611 is formed on the outer peripheral surface of the front end portion of the clutch body 610.
  • the rack 611 is formed to be engaged with the rack 514 of the bearing unit 500.
  • a flange portion 612 is formed on the outer circumferential surface of the clutch body 610 behind the rack 611.
  • an annular engagement flange portion 613 is formed at the rear end portion.
  • the engagement flange portion 613 has the same shape as the engaged concave portion 114 of the rotor 110, and has an uneven portion 613a over the entire circumference of the outer peripheral portion. When the engagement flange portion 613 is inserted into the engaged recessed portion 114, the uneven portions 613a, 114a are engaged with each other.
  • the carrier shaft 441 is inserted into the shaft hole 614 of the clutch body 610.
  • the rack 614a formed on the inner peripheral surface of the shaft hole 614 is engaged with the rack 441a formed on the outer peripheral surface of the carrier shaft 441.
  • the clutch body 610 is in a state in which the movement in the front-rear direction is permitted with respect to the carrier shaft 441, and the rotation in the circumferential direction is restricted.
  • an annular receiving groove 615 is formed outside the shaft hole 614, and a clutch spring 620 is housed in the receiving groove 615.
  • One end of the clutch spring 620 is in contact with the rear end portion of the bearing portion 510, and the other end is in contact with the bottom surface of the receiving groove 615.
  • a pressing portion 631 that comes into contact with the rear surface of the flange portion 612 of the clutch body 610 and pushes the flange portion 612 forward is formed at the upper end portion of the clutch lever 630.
  • the clutch lever 630 is rotatably supported by a support shaft 641 provided on the lever support portion 640.
  • a mounting shaft 632 is formed at a lower end portion of the clutch lever 630.
  • the clutch driving device 650 is disposed below the clutch lever 630.
  • the clutch driving device 650 includes a torque motor 651 and a disk-shaped cam 652 that is rotated about a horizontal axis by the torque of the torque motor 651.
  • a cam shaft 653 is provided on the outer peripheral portion. The center of rotation of the cam 652 and the center of the mounting shaft 632 of the clutch lever 630 are aligned in the front-rear direction.
  • the engagement bar 660 extends in the up and down direction and connects the clutch lever 630 and the cam 652.
  • the upper end portion of the engagement bar 660 is attached to the mounting shaft 632 of the clutch lever 630, and the lower end portion is attached to the cam shaft 653 of the cam 652.
  • a spring 661 is integrally formed at an intermediate position of the engagement bar 660.
  • the spring 661 is a tension spring.
  • the lever support portion 640 and the clutch drive device 650 are fixed to the mounting plate 670 by a fixing method such as a fastening screw.
  • the mounting plate 670 is fixed to the mounting boss 521 of the bearing unit 500 by screws.
  • the cam 652 When the driving form of the drive unit 30 is switched from the one-axis drive mode to the two-axis drive mode, as shown in FIG. 2, the cam 652 is rotated by the torque motor 651 so that the cam shaft 653 is positioned at the lowest position. As the cam 652 rotates, the lower end portion of the clutch lever 630 is pulled downward by the engagement bar 660. The clutch lever 630 rotates forward about the support shaft 641, and the pressing portion 631 pushes the clutch body 610 forward. The clutch body 610 moves forward against the elastic force of the clutch spring 620, and the rack 611 of the clutch body 610 and the rack 514 of the bearing unit 500 are engaged.
  • the rack 611 When the cam shaft 653 of the clutch body 610 is moved to a predetermined position in the middle, the rack 611 reaches a position where it is engaged with the rack 514. At this time, the spring 661 of the engagement rod 660 is in a state of natural length. Since the clutch body 610 does not move to a position further forward than the engagement position, when the cam shaft 653 is moved from the predetermined position to the lowest position, as shown in FIG. 2, the spring 661 is extended downward. In this way, since the clutch lever 630 is pulled by the spring 661 so as to rotate forward, a pressing force is applied from the pressing portion 631 to the clutch body 610 at the engagement position. Thereby, the rack 611 can be tightly engaged with the rack 514.
  • the carrier shaft 441 of the planetary gear mechanism 400 that is, the planetary gear
  • the frame 440 is in a state of being fixed in a non-rotatable manner.
  • the wing shaft 200 rotates at a rotational speed equal to the rotational speed of the rotor 110, and the agitating body 24 coupled to the wing shaft 200 also rotates at the same speed as the rotational speed of the rotor 110. The speed is rotated.
  • the sun gear 410 rotates in the planetary gear mechanism 400.
  • the carrier 440 since the carrier 440 is in a fixed state, the first gear and the second gear of the planetary gear 430 rotate in the same direction and in the opposite direction to the sun gear 410, respectively, and the internal gear 420 rotates in the same direction as the sun gear 410.
  • the drum shaft 300 fixed to the internal gear 420 is in the same direction as the wing shaft 200, and is rotated at a rotation speed slower than the wing shaft 200, and the drum 22 fixed to the drum shaft 300 is slower than the agitating body 24.
  • the rotation speed is rotated in the same direction as the agitating body 24.
  • the agitating body 24 rotates in the same direction as the drum 22 at a rotational speed faster than the drum 22.
  • the cam 652 is rotated by the torque motor 651 so that the cam shaft 653 is positioned at the top.
  • the spring 661 is contracted.
  • the engagement bar 660 moves upward, and the lower end portion of the clutch lever 630 is pushed by the engagement bar 660 to move upward.
  • the clamp lever 630 rotates rearward about the support shaft 641, and the pressing portion 631 is separated from the flange portion 612 of the clutch body 610.
  • the clutch body 610 is moved rearward by the elastic force of the clutch spring 620, and the engagement flange portion 613 of the clutch body 610 and the engaged concave portion 114 of the rotor 110 are engaged.
  • the internal gear 420 rotates at a rotation speed equal to that of the sun gear 410 and the carrier 440, and the drum shaft 300 fixed to the internal gear 420 rotates at a rotation speed equal to that of the rotor 110. That is, in the drive unit 30, the wing shaft 200, the planetary gear mechanism 400, and the drum shaft 300 are integrally rotated. Thereby, the drum 22 and the agitating body 24 rotate integrally.
  • FIG. 7 is a block diagram showing the configuration of the drum type washing machine 1.
  • the drum type washing machine 1 further includes a control unit 701, a storage unit 702, an operation unit 703, a water level sensor 704, a motor drive unit 705, a water supply drive unit 706, a drain drive unit 707, a clutch drive unit 708, and Door lock device 709.
  • the operation unit 703 includes a power button 703a, a start button 703b, and a program selection button 703c.
  • the power button 703a is a button for turning on and off the power of the drum type washing machine 1.
  • the start button 703b is a button for starting the operation.
  • the mode selection button 703c is a button for selecting an arbitrary operation program from among a plurality of operation programs related to the washing operation.
  • the operation unit 703 outputs an input signal corresponding to the button operated by the user to the control unit 701.
  • the water level sensor 704 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 701.
  • the motor drive unit 705 supplies a drive current to the drive motor 100 based on a control signal from the control unit 701.
  • the motor drive unit 705 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 to rotate the drive motor 100 at the rotational speed set by the control unit 701.
  • PWM control is used as motor drive control.
  • the control unit 701 applies a pulse voltage of a duty ratio determined based on the detected rotation speed to the drive motor 100, thereby supplying a drive current corresponding to the pulse voltage to the drive motor 100.
  • the feed water driving unit 706 supplies a drive current to the water valve based on a control signal from the control unit 701. 51.
  • the drain drive unit 707 supplies a drive current to the drain valve 40 based on a control signal from the control unit 701.
  • the clutch drive 650 includes a first detection sensor 654 and a second detection sensor 655.
  • the first detecting sensor 654 detects that the driving form of the driving unit 30 is switched to the two-axis driving mode, and outputs a detection signal to the control unit 701.
  • the second detecting sensor 655 detects that the driving form of the driving unit 30 is switched to the one-axis driving mode, and outputs a detection signal to the control unit 701.
  • the clutch drive unit 708 supplies a drive current to the torque motor 651 based on a detection signal from the first detection sensor 654 and the second detection sensor 655 based on a control signal output from the control unit 701.
  • the door lock device 709 performs locking and unlocking of the door 12 in accordance with a control signal from the control unit 701.
  • the storage unit 702 includes an EEPROM, a RAM, and the like.
  • a program for executing a washing operation of various washing operation programs is stored in the storage unit 702. Further, various parameters and various control flags for execution of these programs are stored in the storage unit 702.
  • the control unit 701 controls the motor drive unit 705, the water supply drive unit 706, the drain drive unit 707, the clutch drive unit 708, and the door lock device based on the respective programs from the operation unit 703, the water level sensor 704, and the like based on the program stored in the storage unit 702. 709 and so on.
  • the drum type washing machine 1 performs a washing operation of various operation programs in accordance with a selection operation by a user based on the program selection button 703c.
  • the washing step, the intermediate dehydration step, the rinsing step, and the final dehydration step are sequentially performed. Further, depending on the operation procedure, there are cases where the intermediate dehydration step and the rinsing step are performed twice or more.
  • the driving form of the drive unit 30 is switched to the two-axis drive mode.
  • the water is stored in the outer tank 20 to a predetermined water level below the lower edge of the inlet port 11 so that the laundry in the drum 22 is immersed in the water.
  • the drive motor 100 alternately performs forward rotation and reverse rotation.
  • the drum 22 and the agitating body 24 alternately rotate forward and reverse in a state in which the rotational speed of the agitating 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 baffle 23 and falls, and falls to the inner peripheral surface of the drum 22.
  • the laundry contacts the blade 24a of the rotating agitating body 24, and the laundry is rubbed by the blade 24a, and the laundry is stirred by the blade 24a. Thereby, the laundry is washed or rinsed.
  • the driving form of the drive unit 30 is switched to the one-axis drive mode.
  • the driving motor 100 that is, the drum 22 and the agitating body 24, are rotated integrally with the centrifugal force of the laundry acting on the drum 22 so far as to be far greater than the gravity.
  • the laundry is pressed against the inner peripheral surface of the drum 22 by the action of centrifugal force to be dehydrated.
  • the drum 22 and the agitating body 24 rotate integrally, the laundry adhered to the drum 22 can be dehydrated favorably without being stirred by the agitating body 24.
  • the planetary gear mechanism 400 is used to decelerate the rotation of the drive motor 100 and transmit it to the drum 22.
  • the drive motor 100 in the two-axis drive mode, when the energization of the drive motor 100 is immediately stopped when the drive motor 100 is stopped, the drive motor 100 is intended to be stopped but the drum 22 is intended to be inertia. The rotation continues, and as a result, a large impact is applied to the respective gears of the planetary gear mechanism 400, so that a large abnormal noise is easily emitted from the planetary gear mechanism 400.
  • the control unit 701 executes a stop control process for reducing the abnormal noise emitted from the planetary gear mechanism 400.
  • the stop control process will be described in detail.
  • Fig. 8 is a flowchart showing a stop control process.
  • the control unit 701 sets the rotational speed set as the target rotational speed, that is, the rotational speed at the time of operation of the drive motor 100, for example, at the time of the washing process, to the rotational speed suitable for washing of the laundry, and only lowers the predetermined speed.
  • the speed reduction V0 (S101).
  • the speed reduction V0 can be set to a rotation speed of a fraction to a tenth of a rotation speed at the time of operation.
  • the control unit 701 controls the motor drive unit 705 to adjust the drive current supplied to the drive motor 100 so that the rotational speed of the drive motor 100 is a new set speed (S102).
  • the control unit 701 determines whether or not the maintenance time T0 has elapsed since the update of the set speed (S103).
  • the sustain time T0 is a time set in advance to maintain a new set speed, and is set, for example, from several hundred milliseconds to several milliseconds.
  • the control unit 701 determines whether or not the set speed is zero based on the next speed drop (S104). Then, when the set speed is not zero (S104: NO), the control unit 701 returns to step S101 to again decrease the set speed only by the deceleration V0.
  • step S104 the processes of steps S101 to S103 are repeated until the next The speed is lowered, and the judgment that the set speed is zero is established.
  • the control unit 701 determines that the set speed is zero based on the next speed decrease (S104: YES)
  • the supply of the drive current to the drive motor 100 is stopped (S105).
  • the stop control process ends.
  • FIGS. 9(a) and 9(b) are diagrams schematically showing changes in the set speed and changes in the actual rotational speed of the drive motor 100 when the stop control process of FIG. 8 is performed.
  • the drive motor 100 repeats the forward rotation and the reverse rotation at a washing speed suitable for washing and a rinsing speed suitable for rinsing.
  • the set speed is sequentially reduced by the deceleration V0 for each sustain time T0. Therefore, when the drive motor 100 is stopped, the drive current supplied to the drive motor 100 does not immediately become zero, but gradually decreases.
  • the drive motor 100 reduces the rotational speed while It will arrive shortly afterwards.
  • the control unit 701 controls the motor driving unit 705 without stopping the control process of FIG. 8 when the rotation of the driving motor 100 is stopped when the drum 22 is stopped. The supply of the drive current to the drive motor 100 is immediately stopped. Thereby, in the one-axis drive mode, it is possible to prevent the time required to stop the rotation of the unnecessary drum 22 from being extended.
  • the drive motor 100 when the drive motor 100 is operated in the two-axis drive mode, when the drive motor 100 is stopped, the drive motor 100 is controlled so that the rotation speed is gradually lowered. Since the stop is reached, the impact applied to the planetary gear mechanism 400 can be reduced when the drive motor 100 is stopped, and the occurrence of abnormal noise of the planetary gear mechanism 400 can be reduced.
  • the drum 22 when the drum 22 is suddenly stopped, the drum 22 is likely to vibrate. However, according to the above embodiment, the drum 22 can be stopped slowly, so that the occurrence of vibration can be suppressed.
  • the setting is made.
  • the speed is reduced by a fixed speed motor control for each fixed time.
  • the same time causes the rotational speed of the drive motor 100 to decrease. Thereby, the occurrence of abnormal noise of the planetary gear mechanism 400 can be favorably reduced without being affected by the amount of load or the like.
  • the rotor 110 of the drive motor 100 is directly coupled to the agitating body 24 via the wing shaft 200, and the agitating body 24 is rotated at a rotational speed equal to the rotational speed of the drive motor 100.
  • the speed reduction mechanism using the gear may be interposed between the agitating body 24 and the drive motor 100 similarly to the drum 22. In this case, by making the reduction ratio of the speed reduction mechanism used in the agitating body 24 smaller than the reduction ratio of the planetary gear mechanism 400, the agitating body 24 can be rotated faster than the drum 22.
  • the drum 22 is rotated about the tilt axis that is inclined with respect to the horizontal direction.
  • the drum type washing machine 1 may be configured such that the drum 22 rotates around the horizontal axis.
  • drum type washing machine 1 of the above embodiment does not have a drying function
  • the present invention can also be applied to a drum type washing machine having a drying function, that is, a drum type drying washing machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

L'invention concerne une machine à laver à tambour. La machine à laver à tambour comporte : un réservoir externe (20) disposé dans une enveloppe (10) ; un tambour (22) disposé dans le réservoir externe (20) afin de tourner librement ; une unité d'entraînement (30) comprenant un moteur d'entraînement (100) et un mécanisme d'engrenage planétaire (400), le mécanisme d'engrenage planétaire (400) utilisant un engrenage pour réduire la vitesse de rotation du moteur d'entraînement (100) et transmettant la rotation au tambour (22) ; une partie d'entraînement de moteur (705) fournissant un courant d'entraînement au moteur d'entraînement (100) ; une partie de commande (701) commandant la partie d'entraînement de moteur (705). Lorsque la partie de commande (701) arrête la rotation du tambour (22) dont la vitesse est réduite par le mécanisme d'engrenage planétaire (400), la partie de commande (701) commande la partie d'entraînement de moteur (705) de telle sorte que le courant d'entraînement fourni au moteur d'entraînement (100) s'affaiblit progressivement. Étant donné que la machine à laver à tambour utilise une structure dans laquelle un mécanisme de réduction de vitesse utilisant un engrenage réduit la vitesse de rotation du moteur d'entraînement (100) et transmet la rotation au tambour (22), un son anormal provenant du mécanisme de réduction de vitesse, lorsque la rotation du tambour (22) est arrêtée, est réduit.
PCT/CN2014/095723 2014-06-26 2014-12-30 Machine à laver à tambour WO2015196775A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-131018 2014-06-26
JP2014131018A JP6509503B2 (ja) 2014-06-26 2014-06-26 ドラム式洗濯機

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WO2015196775A1 true WO2015196775A1 (fr) 2015-12-30

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JP (1) JP6509503B2 (fr)
WO (1) WO2015196775A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1195726A (zh) * 1997-03-20 1998-10-14 三星电子株式会社 制动洗衣机脱水桶的方法
JP4238497B2 (ja) * 2001-09-17 2009-03-18 パナソニック株式会社 洗濯機のモータ駆動装置
CN103415658A (zh) * 2011-02-28 2013-11-27 株式会社东芝 洗衣机
CN103789964A (zh) * 2012-10-31 2014-05-14 三星电子株式会社 洗衣机及其控制方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3383957B2 (ja) * 1993-08-13 2003-03-10 株式会社東芝 洗濯機及びその制御方法
JP3029193B2 (ja) * 1997-01-23 2000-04-04 株式会社日立製作所 全自動洗濯・乾燥機
KR100763367B1 (ko) * 2000-11-15 2007-10-04 엘지전자 주식회사 드럼세탁기
JP2004008278A (ja) * 2002-06-04 2004-01-15 Hitachi Home & Life Solutions Inc 洗濯機
JP3895284B2 (ja) * 2003-02-24 2007-03-22 株式会社東芝 洗濯機
JP5176662B2 (ja) * 2008-04-09 2013-04-03 パナソニック株式会社 ドラム式洗濯機
JP5593640B2 (ja) * 2008-08-22 2014-09-24 パナソニック株式会社 洗濯機
JP6043950B2 (ja) * 2012-06-22 2016-12-14 パナソニックＩｐマネジメント株式会社 洗濯乾燥機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1195726A (zh) * 1997-03-20 1998-10-14 三星电子株式会社 制动洗衣机脱水桶的方法
JP4238497B2 (ja) * 2001-09-17 2009-03-18 パナソニック株式会社 洗濯機のモータ駆動装置
CN103415658A (zh) * 2011-02-28 2013-11-27 株式会社东芝 洗衣机
CN103789964A (zh) * 2012-10-31 2014-05-14 三星电子株式会社 洗衣机及其控制方法

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JP2016007466A (ja) 2016-01-18

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