WO2013161251A1 - Machine à laver à tambour - Google Patents

Machine à laver à tambour Download PDF

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Publication number
WO2013161251A1
WO2013161251A1 PCT/JP2013/002677 JP2013002677W WO2013161251A1 WO 2013161251 A1 WO2013161251 A1 WO 2013161251A1 JP 2013002677 W JP2013002677 W JP 2013002677W WO 2013161251 A1 WO2013161251 A1 WO 2013161251A1
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WO
WIPO (PCT)
Prior art keywords
drum
vibration
laundry
washing machine
rotational speed
Prior art date
Application number
PCT/JP2013/002677
Other languages
English (en)
Japanese (ja)
Inventor
友弘 藤井
明宏 細川
松本　俊成
内山　亘
健 蒲生
乾　浩章
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201380021536.5A priority Critical patent/CN104246051B/zh
Priority to DE112013002171.4T priority patent/DE112013002171T5/de
Publication of WO2013161251A1 publication Critical patent/WO2013161251A1/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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • 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
    • D06F2103/26—Imbalance; Noise 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/46—Current or voltage of the motor driving the drum
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • 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
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance

Definitions

  • the present invention relates to a drum-type washing machine that includes a rotatable drum that houses laundry in an elastically supported water tub, and performs washing, rinsing, and dewatering of the laundry in the drum.
  • the ball balancer includes a plurality of rolling elements having a degree of freedom in the rotation direction (circumferential direction) in an annular container attached to the inner periphery of the drum.
  • the ball balancer is a balance device that utilizes a dynamic phenomenon in which a rolling element automatically moves to an opposing position with respect to an unbalanced body that generates an eccentric load.
  • both ball balancers have a mechanism in which a plurality of rolling elements change their positions and automatically correct the unbalance corresponding to the unbalance amount of the laundry that changes over time in the dehydration process. .
  • the first rotational speed is set to a rotational speed equal to or lower than the resonant rotational speed, and the rolling element moves to the in-phase position with respect to the eccentric load for a predetermined time, and maintains the in-phase position. Thereafter, the drum slowly accelerates from this state and passes through the resonance rotational speed. As a result, the rolling elements automatically move to the unbalanced opposing position according to the principle of automatic balancing, thereby suppressing vibration.
  • the drum is moved so as to move the rolling element in a direction that cancels the unbalance.
  • the drum is controlled by slightly changing the rotational speed of the drum to a discontinuous rotational speed (see Patent Document 2).
  • the relative position between the unbalance and the rolling element is calculated from the beat signal to control the rotation operation of the ball balancer. That is, when the rotation of the drum reaches the natural frequency, control is performed so that the rolling elements and the unbalance are in opposite phases (see Patent Document 3).
  • the drum type washing machine of the present invention includes a drum that is rotatably supported by a horizontal or inclined rotating shaft, a water tank that accommodates the drum, an annular container disposed on the drum, and a rolling element that is movable in the annular container. And a drive motor for rotationally driving the drum. Furthermore, the control part which controls a drive motor etc. and controls a washing process, a rinse process, a dehydration process, etc. is provided, and a control part controls rotation of a drive motor so that a rolling element may be disperse
  • FIG. 1 is a side configuration diagram of a drum-type washing machine according to the first embodiment of the present invention.
  • FIG. 2 is a front view of the ball balancer of the drum type washing machine according to the first embodiment of the present invention.
  • FIG. 3 is a control block diagram of the drum type washing machine in the first embodiment of the present invention.
  • FIG. 4 is a diagram showing a rotational speed process in the first embodiment of the present invention.
  • FIG. 5A is an operation schematic diagram of the ball balancer according to the first embodiment of the present invention.
  • FIG. 5B is an operation schematic diagram of the ball balancer according to the first embodiment of the present invention.
  • FIG. 6 is a side configuration diagram of a drum-type washing machine according to the second embodiment of the present invention.
  • FIG. 7 is a control block diagram of the drum type washing machine in the second embodiment of the present invention.
  • FIG. 8A is a diagram showing an unbalanced state of the laundry of the drum type washing machine according to the second embodiment of the present invention.
  • FIG. 8B is a diagram illustrating an unbalanced state of the laundry of the drum type washing machine according to the second embodiment of the present invention.
  • FIG. 8C is a diagram illustrating an unbalanced state of the laundry of the drum type washing machine according to the second embodiment of the present invention.
  • FIG. 8D is a diagram illustrating an unbalanced state of the laundry of the drum type washing machine according to the second embodiment of the present invention.
  • FIG. 8E is a diagram showing an unbalanced state of the laundry of the drum type washing machine according to the second embodiment of the present invention.
  • FIG. 9 is an activation sequence diagram when the drum type washing machine is activated in a distributed manner according to the second embodiment of the present invention.
  • FIG. 10 is a front view of the drum and ball balancer of the drum type washing machine according to the third embodiment of the present invention.
  • FIG. 11 is a control block diagram of the drum-type washing machine according to the third embodiment of the present invention.
  • the rotation speed and acceleration shown below are the structure of the machine, the resonance rotation speed, the shape of the ball balancer that is an annular container, the shape, material, weight, surface processing of the rolling element, or the capacity of the viscous fluid sealed inside. It is set by the combination. Therefore, the rotational speed and acceleration do not limit the present invention numerically.
  • FIG. 1 is a side configuration diagram of a drum type washing machine according to a first embodiment of the present invention.
  • a bottomed cylindrical water tank 2 is accommodated inside the drum type washing machine 1 inside the drum type washing machine 1.
  • the water tank 2 is elastically supported by a spring 10 and a damper 5.
  • a bottomed cylindrical drum 3 is accommodated in the water tank 2.
  • the drum 3 is disposed such that a rotating shaft 3b that rotates and supports the drum 3 is inclined downward from the front side toward the bottom side.
  • the aquarium 2 is disposed so as to be inclined along the drum 3 with the opening 2a as the front side.
  • the rotating shaft 3b By inclining the rotating shaft 3b, the opening on the front side of the water tub 2 can be arranged on the upper side, and the user can take out the laundry 13 in the drum 3 without taking a posture of bending greatly. Moreover, compared with the case where the rotating shaft 3b is set in the horizontal direction, the water supplied into the water tank 2 accumulates on the back side, and a deep water storage state can be obtained even with a small amount of water. That is, the laundry 13 can be easily hydrated even with a small amount of water supply. In addition, if the ease of taking out the laundry 13 and the amount of water supply are not taken into consideration, the rotating shaft 3b may be horizontal.
  • a baffle 16 that can lift and drop the laundry 13.
  • the drum 3 is driven to rotate, the laundry 13 lifted by the baffle 16 is struck against the water surface from the top of the drum 3 and is washed by tapping (mechanical force).
  • the drum 3 is provided with a plurality of through holes 15. Water can be passed from the water tank 2 into the drum 3 through the through holes 15.
  • a door 7 is provided in the opening 3a so as to be freely opened and closed.
  • the opening 2a of the water tank 2 is provided with an annular sealing material (not shown) at its mouth edge.
  • the front side of the sealing material abuts on the back side of the door 7 and seals it. Even if the opening 2a of the water tank 2 that swings up and down, right and left and back and forth moves, the sealing material is deformed and pressed to the back side of the door 7. As a result, hermeticity is maintained.
  • FIG. 2 is a front view of the ball balancer 30.
  • the ball balancer 30 includes a ring-shaped annular container 17 disposed on the front side of the drum 3, a rolling element 8 made of a metal sphere movable within the annular container 17, and a viscous fluid 18 stored in the annular container 17. have.
  • the annular container 17 is installed so as to coincide with the axis of the drum 3.
  • a viscous fluid 18 is stored inside the annular container 17. Silicon oil is used as the viscous fluid 18 in the present embodiment. Note that the viscous fluid 18 is not limited to oils such as silicone oil because the same effect can be obtained if the liquid is viscous such as machine oil or an aqueous solution.
  • a driving motor 4 for rotating the drum 3 is attached to the inside of the drum type washing machine 1 below the water tank 2.
  • the rotational drive of the drive motor 4 is transmitted via a belt 23 to a drum pulley 24 provided on the same shaft as the drum 3.
  • the drive motor 4 drives the drum 3 to rotate.
  • a water supply valve 11 is provided at the top of the drum type washing machine 1. Water from the water supply valve 11 flows into the detergent case 9 and is supplied into the water tank 2 while dissolving the detergent. In the rinsing process, since there is no detergent in the detergent case 9 even through the detergent case 9, rinsing water containing no detergent component is supplied.
  • a drainage pump 19 is provided at the lower part of the drum type washing machine 1, and the drainage pump 19 is driven to drain the washing water and the rinsing water in the water tank 2 through the drainage pipe 22. In the present embodiment, the drainage pump 19 drains the washing water and the rinsing water in the water tank 2, but it may be a drain valve.
  • FIG. 3 is a control block diagram of the drum type washing machine in the present embodiment.
  • the control unit 6 gives an instruction to drive the water supply valve 11, the drain pump 19 and the drive motor 4.
  • it has a system that can manage all input / output control including the vibration detection unit 12 and various sensor outputs such as the water level sensor 21 with a timer, and can know the time required for each operation and timing.
  • the vibration detection unit 12 that detects vibration generated due to the unbalance of the drum 3 and the ball balancer 30 is provided at the upper part on the back side of the water tank 2.
  • the attachment position of the vibration detection part 12 is not limited to this.
  • the vibration of vibration systems such as the drum 3 and the drive motor 4 can be detected, it may be attached anywhere.
  • the vibration detection unit 12 detects vibration of the water tank 2 in a series of processes such as washing, rinsing and dehydration. After the control unit 6 analyzes the vibration value in each process, the motor is optimally controlled by issuing a command to the drive motor 4.
  • the vibration detection unit 12 includes at least one acceleration sensor and detects vibration in at least one of the vertical direction, the horizontal direction, and the front-rear direction of the water tank 2.
  • the acceleration sensor that is the vibration detection unit 12 may be a semiconductor acceleration sensor, a piezoelectric acceleration sensor, or the like, or may be a multi-axis (two-axis or three-axis) acceleration sensor.
  • the current detection unit 20 detects the value of the current applied to the drive motor 4.
  • the control unit 6 detects and determines the dispersion state of the rolling elements 8 in the annular container 17 based on the current detected by the current detection unit 20.
  • the control unit 6 is an electric circuit including a CPU, a memory, a driver circuit, and the like as a hardware configuration, and operates peripheral devices such as the drive motor 4 according to a program stored in the memory in the control unit 6.
  • FIG. 4 is a diagram showing a process of a rotational speed of the drum type washing machine in the first embodiment of the present invention.
  • 5A and 5B are operation schematic diagrams of the ball balancer according to the first embodiment of the present invention.
  • FIG. 5A shows the state of the ball balancer in the unbalance amount detection step
  • FIG. 5B shows the rolling element dispersion step.
  • the rotation direction of the drum 3 is clockwise when the drum 3 and the ball balancer 30 are viewed from the front.
  • a driving voltage is applied to the driving motor 4 according to a command from the control unit 6 after draining.
  • the control unit 6 operates the drive motor 4 from low speed rotation to high speed rotation, and gradually increases the rotation speed of the drum 3.
  • the drive motor 4 is a permanent magnet synchronous motor, the rotor position of the drive motor 4 is detected. Thereby, by preventing the step-out of the drive motor 4, the rotational speed can be increased safely and at high speed.
  • the controller 6 rotates the drum 3 at a rotational speed at which the gravity applied to the laundry 13 and the rolling element 8 is smaller than the centrifugal force generated by the rotation of the drum 3.
  • the rotation speed at which the laundry 13 adheres to the inner wall of the drum 3 is most desirable.
  • the rotation speed of the drum 3 in the unbalance amount detection step in the present embodiment is 80 rpm.
  • the operation when the amount of unbalance detected in the unbalance amount detection step is small will be described. Even when the unbalance amount is small, the unbalance correction cannot be performed well even if it is positioned in the opposite phase to the unbalance as in the conventional example. This is because the specific gravity of the rolling element 8 is large and the correction force of the rolling element 8 is greater than the unbalance of the laundry 13. That is, since the amount of unbalance and the correction force of the rolling element 8 do not coincide with each other, the rolling element 8 becomes unbalanced when starting up at a high speed, and the vibration and noise are increased. Therefore, in the present embodiment, there is provided a rolling element dispersion step for uniformly dispersing the rolling elements 8 after the unbalance detection. As a result, vibration and noise during high-speed startup can be prevented.
  • the rolling elements 8 rotate as a single mass at a different rotation cycle from the unbalance of the laundry 13 (see FIG. 5A).
  • the rotational speed of the drum 3 is balanced rotational speed (first rotational speed) at which the gravity applied to the laundry 13 and the rolling element 8 and the centrifugal force due to the rotation of the drum 3 are substantially balanced from 80 rpm of the unbalance amount detection step.
  • the rotational speed at this time is 67 rpm in the present embodiment (see FIG. 4), although it depends on the size of the drum 3, the amount of cloth, and the cloth quality.
  • the lower limit value of the rotational speed at this time is a rotational speed at which the laundry 13 does not fall within the drum 3, and a rotational speed at which the rolling element 8 can move relative to the laundry within the annular container 17. is there. If the rotation speed of the drum 3 is too low, gravity becomes dominant, and the centrifugal force for moving the rolling element 8 is lost to the gravity, so that the rolling element 8 cannot move in the annular container 17. Further, if the rotational speed of the drum 3 is too high, the centrifugal force becomes dominant rather than the gravity, so that the rolling element 8 is relative to the drum 3, that is, relative to the unbalanced position A in the drum 3. Cannot move to.
  • the gravity applied to the laundry 13 and the rolling element 8 again accelerates to a rotational speed that is smaller than the centrifugal force caused by the rotation of the drum 3.
  • it is set to 80 rpm (second rotation speed) (see FIG. 4).
  • the drum 3 is decelerated to 67 rpm (first rotation speed). If the rotational speed of the drum 3 at this time is a rotational speed lower than the primary resonance rotational speed, the same effect can be obtained.
  • this operation is performed only once, the rolling element 8 is in a state of remaining as a lump. As shown in the ball dispersion step of FIG. 4, the rolling elements 8 can be dispersed to some extent for a small unbalance amount as shown in FIG.
  • the second predetermined time is shorter than the first predetermined time, that is, the acceleration after the deceleration is performed only for a short time, so that the rolling force that has been applied to the rolling elements 8 (inertial force) can not be dispersed.
  • the mass of the moving body 8 can be dispersed. What is important here is that after the drum 3 is accelerated, the drum 3 is rotated at an accelerated rotation speed (second rotation speed) for a short time.
  • the accelerated rotational speed is 80 rpm, and the drum 3 is rotated at the second rotational speed for a second predetermined time.
  • the second predetermined time is set longer than the time after decelerating (first predetermined time)
  • the centrifugal force due to the rotation of the drum 3 works, and the rolling element 8 may be hardened due to the automatic balancing effect. Therefore, it is preferable to make the maintenance time of the rotational speed (second rotational speed) after acceleration short.
  • the time after deceleration is 6 seconds and the time after acceleration is 1 second.
  • the present invention is not limited to this.
  • the rolling element 8 is dispersed by dropping the rotational speed of the drum 3 to a rotational speed at which the unbalance of the laundry 13 is not lost, and is accelerated after being maintained for a certain period of time.
  • a force can be applied to the rolling elements 8 that could not be dispersed.
  • the moment after acceleration is made shorter than the time after deceleration, a momentary force can be applied, so that the rolling elements 8 can be efficiently distributed evenly with the unbalance of the laundry 13 and resonance.
  • the vibration of the drum 3 can be minimized.
  • the vibration detection unit 12 detects vibration of the water tank 2 again at a balanced rotational speed at which the gravity applied to the laundry 13 and the rolling element 8 and the centrifugal force due to the rotation of the drum 3 are balanced ( Since the position of the rolling element is different from that in FIG. In the vibration determination step, when the vibration amount becomes smaller than a preset threshold value, it is determined that the rolling elements 8 are substantially in an unbalanced state, that is, the rolling elements 8 are dispersed, There is no problem even if the rotational speed is increased. Accordingly, the control unit 6 issues a command to the drive motor 4 to accelerate at once to a rotational speed higher than the resonance rotational range. By confirming that the vibration is small by the vibration detector 12 and starting up the drum 3 at a high rotational speed, the vibration of the drum 3 can be reliably suppressed when the resonant rotational speed is passed.
  • the vibration detection unit 12 detects the vibration of the water tub 2, determines the unbalanced state of the laundry 13 based on the detection result, and changes the rotation pattern of the drum 3 when the unbalance amount is small.
  • the necessary rolling elements 8 can be controlled according to the unbalanced state of the laundry 13. As described above, in the drum type washing machine using the ball balancer system, even when the unbalance of the laundry 13 is small, the rolling element 8 can be controlled to start up to the resonance rotational speed with low vibration. The vibration of the drum 3 can be minimized when passing through the resonance rotational speed.
  • the rotation speed and acceleration shown below are the structure of the machine, the resonance rotation speed, the shape of the ball balancer that is an annular container, the shape, material, weight, surface processing of the rolling element, or the capacity of the viscous fluid sealed inside. It sets suitably by the combination of. Therefore, the rotational speed and acceleration do not limit the present invention numerically.
  • FIG. 6 is a side view of a drum type washing machine according to the second embodiment of the present invention.
  • FIG. 7 is a control block diagram of the drum type washing machine according to the second embodiment of the present invention.
  • 8E is a diagram showing an unbalanced state of the laundry of the drum type washing machine according to the second embodiment of the present invention.
  • FIG. 8A is a front side view of the drum 3 in which the unbalance position A is generated with the laundry 13 stuck to the inner wall of the drum 3.
  • FIG. 8B is a side view of the drum 3 and shows the front unbalance position where the unbalance position A is on the front side (front side).
  • FIG. 8C is a side view of the drum 3 and shows the rear unbalance position where the unbalance position A is on the rear side.
  • FIG. 8D is a side view of the drum 3 and shows the middle unbalance position where the unbalance position A is on the center side of the drum.
  • FIG. 8E is a side view of the drum 3 and shows a diagonal unbalance position in which the unbalance position A is diagonal to the drum.
  • FIG. 9 is an activation sequence diagram when the drum type washing machine is activated in a distributed manner according to the second embodiment of the present invention.
  • the drum type washing machine 101 includes a drum 103 for storing the laundry 113, a water tank 102 for storing the drum 103 therein, and a damper 105 for supporting the water tank 102.
  • Baffles 116 (three in this case) are provided on the inner peripheral wall of the drum 103 for lifting and stirring the laundry 113 when the drum 103 rotates.
  • a ball balancer 130 is provided on the opening 103a side where the laundry on the front side of the drum 103 is put.
  • the ball balancer 130 has an annular container 117, and a plurality of rolling elements 108 made of, for example, iron balls and a viscous fluid (not shown) having a predetermined viscosity are enclosed in the annular container 117.
  • the ball balancer 130 rotates together with the drum 103, and the rolling elements 8 arranged in a line in the ball balancer 130 are configured to be freely movable in the rotational direction by the internal viscous fluid.
  • silicone oil is used as the viscous fluid.
  • the viscous fluid is not limited to oils such as silicone oil, since the same effect can be obtained with viscous liquids such as machine oil and other aqueous solutions.
  • a vibration detection unit (multi-axis vibration sensor) 112 is provided on the upper part on the front side of the water tank 102.
  • the vibration detection unit 112 grasps the vibrations of the lateral displacement, the front-rear displacement, and the vertical displacement of the front side (front side) upper portion of the water tank 102, receives a signal from the vibration detection unit 112 according to the magnitude of the displacement, and receives the control unit 106. Performs control such as increasing, stopping, or maintaining the rotation speed of the drum 103.
  • a drum pulley 124 provided on the same axis as the drum 103 is provided.
  • the drum 103 is rotated by transmitting the drive of the drive motor 104 to the drum pulley 124 via the belt 123.
  • the drive motor 104 is provided with a rotor position detector 114 that detects the rotor position of the drive motor 104.
  • the rotor position detection unit 114 detects the rotor position, and the control unit 106 performs control to drive the drive motor 104. Since the drive motor 104 is a permanent magnet synchronous motor, the rotor position of the drive motor 104 is performed by the rotor position detection unit 114 and input to the control unit 106 so that the drive motor 104 rotates without being stepped out.
  • the control unit 106 that controls the driving of the drum type washing machine 101 includes a determination unit 160 and a rotation control unit 162.
  • the determination unit 160 includes a current detection unit 160 e that detects a current flowing through the motor 104.
  • the determination unit 160 detects the rotational position detection unit 160d for detecting the circumferential imbalance position in the drum 103 due to the bias of the laundry 113, and the ball balancer 130 from the vibration displacement of the vibration detection unit 112.
  • An unbalance amount calculation unit 160a that detects an unbalance amount of the laundry 113 in the provided drum 103 is provided.
  • the determination unit 160 includes an unbalance position calculation unit 160b that calculates the unbalance position of the laundry 113 in the depth direction of the drum 103, and a clothing amount determination unit 160c that detects the capacity of the laundry 113 in the drum 103. .
  • the rotation control unit 162 includes a driving unit 162a that drives the motor 104 therein.
  • the drive unit 162 a drives the motor 104 in synchronization with the rotor position signal of the rotor position detection unit 114 that detects the rotor position of the motor 104.
  • the motor 104 rotates the drum 103 via a drum pulley 124 and a belt 123 as a speed reduction mechanism, and a vibration detecting unit 112 provided on the front side (front side) of the water tank 102 causes a vibration displacement in which the water tank 102 vibrates due to the rotation. Detect.
  • FIG. 8A shows that the unbalance position A when viewed from the front side of the drum 103 is rotating on the circumference of the drum 103, and a rotation control device (ball balancer) provided on the front side of the drum 103. 130) shows a state in which the rolling element 108 is biased to the bottom.
  • the rotation speed of the drum 103 in FIG. 8A is equal to or higher than the minimum rotation speed at which the laundry 113 sticks to the inner wall of the drum 103.
  • the maximum rotation speed is not less.
  • the minimum rotation speed in the present embodiment is a rotation speed at which the gravity applied to the laundry and the centrifugal force of the drum 103 are balanced, for example, about 95 rpm.
  • the maximum rotation speed is, for example, about 135 rpm.
  • the unbalance position A is generated in a complicated manner depending on the position of the laundry 113 shown in FIG. 8A.
  • the unbalance position A can be roughly classified into the following four.
  • the unbalance position A in the depth direction of the drum 103 is (1) when it is in front of the drum 103 (FIG. 8B), (2) when it is behind the drum 103 (FIG. 8C), and (3) the intermediate position of the drum 103 8 (FIG. 8D), and (4) diagonal positions (180 degrees) between the front side and the rear side of the drum 103 (FIG. 8E).
  • the drive motor 104 is started and the rotation speed of the drum 103 is maintained at about 120 rpm.
  • the rotational speed at this time is a rotational speed at which the rolling element 108 does not rotate due to being biased and stopped at the bottom of the ball balancer 130.
  • the laundry 113 rotates while being stuck to the inner wall of the drum 103. In this state, the activation of the drum 103 is determined during the period T1.
  • the control unit 106 determines that the amount of unbalance of the laundry 113 is small and that the rotation of the drum 103 by rotating the rolling elements 108 may reduce vibration, the motor 104 Is driven at a higher speed to increase the rotational speed of the drum 103. In order to disperse the rolling elements 108, the acceleration of the drum 103 is increased or decreased.
  • the rotational speed of the drum 103 is increased while changing the rising acceleration as follows at regular time intervals.
  • acceleration S1> acceleration S4> acceleration S3> acceleration S2 the acceleration of the drum 103 is increased or decreased in the order of acceleration S1, acceleration S2, acceleration S1, acceleration S3, acceleration S4, and acceleration S1. In this way, acceleration is increased or decreased, and the rolling elements 108 are dispersed while increasing the rotation speed of the drum 103.
  • control unit 106 of the drum type washing machine 101 operates the drum 103 before the washing process, and the clothes amount determination unit 160c determines the amount of the laundry 113 accommodated in the drum 103. At this time, the washing time and the amount of detergent are calculated, and the unbalanced state before the dehydration process is grasped.
  • the washing water in the water tank 102 is drained and then dewatered.
  • the state of the laundry 113 is hardly located in the drum 103 in a uniform state, and an unbalanced state is almost always generated.
  • the drum 103 in order to eliminate the unbalanced state, the drum 103 is slowly rotated after draining, and the laundry 113 is loosened to eliminate the unbalanced state as much as possible. However, even in this state, the unbalanced state remains, and in this state, the dehydration process is started.
  • the drum 103 vibrates greatly when it passes through a resonance speed (for example, between 220 and 400 rpm here).
  • a resonance speed for example, between 220 and 400 rpm here.
  • control is performed so as to achieve a balance at a rotational speed lower than the resonant rotational speed of the drum 103. That is, the unbalance amount and the unbalance position A of the laundry 113 are detected by the vibration displacement of the vibration detection unit 112 provided in the upper front portion of the drum 103.
  • the ball balancer 130 is appropriately controlled from that state to achieve a balance, and in this state, the rotation speed of the drum 103 is controlled to pass the resonance rotation speed. As a result, vibration in the resonance rotational speed region can be suppressed. Detailed operation will be described below.
  • the drive unit 162 a applies a drive voltage to the motor 104 in accordance with a command from the rotation control unit 162 of the control unit 106.
  • the motor 104 is gradually operated from the low speed rotation to the high speed rotation, and the rotation speed of the drum 103 is gradually increased.
  • the rotation control unit 162 controls the motor 104 so that the rotation speed of the drum 103 is about 120 rpm, and maintains that state.
  • the left and right displacements and the front and rear displacements are detected from a vibration detection unit 112 (multi-axis vibration sensor) provided at the front upper portion of the drum 103.
  • vibration detection unit 112 multi-axis vibration sensor
  • the rolling element 108 inside the ball balancer 130 stays at one place near the bottom of the annular container 117 and stops by a viscous fluid (here, silicon oil or a low-viscosity liquid may be used) at a rotational speed of about 120 rpm or less. Become. For this reason, since the rolling element 108 does not move when the drum 103 is rotating, vibration is caused only by the unbalanced state of the laundry 113, and the vibration detection unit 112 is stable and in the annular container 117. An unbalanced vibration displacement can be detected without being affected by the movement of the rolling element 108.
  • a viscous fluid here, silicon oil or a low-viscosity liquid may be used
  • the unbalanced state of the laundry 113 can be grasped by the unbalance amount calculation unit 160a and the unbalance position calculation unit 160b from the obtained vibration displacement.
  • the rolling element 108 (rolling element) in the ball balancer 130 is caused by the laundry 113.
  • the unbalanced state further deteriorates the unbalanced state. That is, when the unbalance amount of the laundry 113 is smaller than the total weight of the rolling elements 108, the rolling elements 108 cause an unbalance. Therefore, in such a condition, by controlling the rolling elements 8 in the annular container 117 of the ball balancer 130 to be in a dispersed state, the influence of vibration by the rolling elements 108 is suppressed, and the imbalance due to the laundry 113 is suppressed. It will be only the vibration resulting from the state. Therefore, vibration amplification by the rolling element 108 is prevented.
  • the rolling elements 108 are dispersed by changing the rising acceleration up to the target rotational speed stepwise, instead of increasing the driving of the motor 104 at a constant acceleration.
  • the acceleration for example, 10 rpm / second, 20 rpm / second, 30 rpm / second, etc.
  • the acceleration is changed at each time when increasing from 120 rpm to 400 rpm.
  • acceleration is performed from 120 rpm to 150 rpm at an acceleration S1 (for example, 30 rpm / second).
  • the rotational speed is increased to 165 rpm at an acceleration S2 (for example, 4 to 5 rpm / second) where acceleration S1> acceleration S2.
  • the rotational speed is increased to 200 rpm at an acceleration S3 (for example, 10 rpm / second) where acceleration S1> acceleration S3> acceleration S2.
  • the rotational speed is increased to 300 rpm at an acceleration S4 where acceleration S1> acceleration S4> acceleration S3.
  • the rotational speed is increased to 400 rpm at an acceleration S1. In this manner, the rotation speed of the drum 103 is increased to the dehydration rotation speed while increasing or decreasing the acceleration.
  • the rolling element 108 in which the arrangement of the rolling element 108 advances earlier in the rotation direction and the rolling element 108 that does not advance can be generated by the gravitational acceleration that varies depending on the position of the rolling element 108, and the rolling element 108 is generated in the annular container 117.
  • Vibration can be reduced by starting dehydration in this state.
  • the case where the unbalanced state of the laundry 113 is in the depth direction of the drum 103 as shown in FIG. 8C corresponds to the following. That is, regardless of the unbalance amount, the rolling elements 108 in the ball balancer 130 in front of the drum 103 are controlled in a dispersed state, thereby suppressing vibration by minimizing the unbalanced state on the front side of the drum 103. can do.
  • the vibration of the drum 103 at the start of dehydration can be suppressed. it can.
  • the vibration can be minimized by controlling whether the rolling elements 108 are biased in one place according to the unbalanced amount of the laundry 113 to be in a balanced state or a dispersed state. .
  • the drum 103 can be controlled to be in a dispersed state and vibration can be suppressed. Further, when the unbalanced state in the forward direction of the drum 103 is a certain amount or more, the vibration can be suppressed by controlling the rolling element 108 so as to cancel the unbalanced state by the laundry 113.
  • the rotation speed and acceleration shown below are the structure of the machine, the resonance rotation speed, the shape of the ball balancer that is an annular container, the shape, material, weight, surface processing of the rolling element, or the capacity of the viscous fluid sealed inside. It is set by the combination. Therefore, the rotational speed and acceleration do not limit the present invention numerically.
  • FIG. 10 shows a front view of the drum and ball balancer (annular container) of the drum type washing machine in the third embodiment of the present invention.
  • FIG. 11 is a control block diagram of the drum-type washing machine according to the third embodiment of the present invention.
  • the configuration of the drum type washing machine as viewed from the front includes a drum 203 in the center, three baffles 216 for lifting the laundry therein, and three laundry unbalanced positions A.
  • a ball balancer 230 for adjusting the balance is located on the front side of the drum 203, and the drum 203 rotates together with the drum 203.
  • a drum 203 is accommodated, and a water tank 240 for storing washing water at the time of washing is provided.
  • the front part of the water tank 240 is provided with magnetic field generators 240a arranged at regular intervals on the circumference.
  • the portion of the water tank 240 including the magnetic field generator 240a is disposed with a space of a certain distance parallel to the ball balancer 230 provided on the drum 203 on the circumference.
  • control unit 106 is provided with a magnetic field control unit 163 that controls the magnetic field generation of the magnetic field generation unit 240a. Since other configurations are the same as those of the second embodiment of the present invention, the description thereof is omitted.
  • control unit 106 of the drum type washing machine operates the drum 203 before the washing process, and the clothes amount determination unit 160c determines the amount of laundry accommodated in the drum 203.
  • the washing time and the amount of detergent are calculated and used for grasping the unbalanced state before the dehydration process.
  • the washing water inside the aquarium is drained and then dewatered.
  • the state of the laundry is hardly located in the drum 203 in a uniform state, and an unbalanced state is almost always generated.
  • the drum 203 in order to eliminate the unbalanced state, the drum 203 is slowly rotated after draining and the laundry is loosened to eliminate the unbalanced state as much as possible. However, even in this state, the unbalanced state remains, and in this state, the dehydration process is started.
  • the vibration displacement greatly exceeds a specified vibration displacement. In that case, the rotation of the drum 203 is stopped. After the stop, the loosening process is performed again, and dehydration is started again.
  • the vibration detection unit 112 provided at the front upper portion of the drum 203 has a rotation speed lower than the resonance rotation speed of the drum 203 so that the dehydration start is successful by suppressing vibration as much as possible.
  • the vibration displacement can be suppressed by detecting the unbalance amount and the unbalance position of the laundry, controlling the ball balancer 230 from that state, and passing the resonance rotational speed in that state. The operation will be described below.
  • the rotation control unit 162 controls the motor 104 so that the rotation number of the drum 203 is about 120 rpm, and maintains that state.
  • the left / right displacement and the front / rear displacement are detected from a vibration detection unit 112 (multi-axis vibration sensor) provided in the upper front portion of the drum 203.
  • a vibration detection unit 112 multi-axis vibration sensor
  • the rolling element 208 inside the annular container of the ball balancer 230 is deviated from the rotational speed of the drum 203 by a constant rotational speed while being biased to one place by a viscous fluid (here, silicon oil or a low-viscosity liquid may be used). Rotate in the state.
  • the unbalanced state of the laundry can be grasped by the unbalance amount calculation unit 160a and the unbalance position calculation unit 160b from the obtained vibration displacement.
  • the rolling element 208 in the ball balancer 230 is controlled to be in a dispersed state, thereby preventing the unbalanced state due to the laundry from being further deteriorated.
  • the drum 203 and the rolling element 208 rotate together asynchronously below the resonance rotational speed, and the state where the rotational speed of the rolling element 208 is slightly delayed from the drum 203 is maintained. Thereafter, when the rotational speed is gradually increased, the control unit 106 accelerates or decelerates the speed of the rolling element 208 by generating a magnetic field by the magnetic field control unit 163 with respect to the magnetic field generation unit 240a provided in the water tank 240. To generate a distributed state.
  • the control unit 106 rotates asynchronously when the unbalanced position A of the clothes by the laundry in the drum 203 and the rolling element 208 rotate together due to vibration displacement from the multi-axis vibration detection unit 112.
  • the relative position of the rolling element 208 and the unbalance position A of the laundry can be grasped.
  • a state in which the rolling elements 208 are gradually dispersed is generated by generating a magnetic field in the magnetic field generator 240a while grasping the position of the rolling elements 208 and changing the strength of the magnetic fields to accelerate and decelerate the rolling elements 208. Can be generated.
  • the drum 203 is rotated at a constant acceleration and the resonance rotational speed is passed, so that vibration is suppressed without deteriorating the unbalanced state by the rolling element 208 and dehydration. You can start up.
  • the drum-type washing machine of the present invention includes a drum that is rotatably supported by a horizontal or inclined rotating shaft, a water tank that accommodates the drum, an annular container disposed on the drum, and an annular container. It has a rolling element that can move inside, and a drive motor that rotationally drives the drum. Furthermore, the control part which controls a drive motor etc. is provided, and the control part distributes a rolling element in an annular container.
  • the present invention originally moves the rolling element in the annular container that moves to a position facing the unbalance at a high rotational speed (steady rotational speed at the time of dehydration) and takes a balanced state to the resonance rotational speed or less. Disperse in the annular container at the rotational speed. As a result, it is possible to eliminate the drum imbalance due to the rolling elements at the time of starting up to a high rotational speed, and to suppress drum vibration at the time of starting up.
  • the present invention also includes a vibration detection unit that detects the vibration of the water tank.
  • a vibration detection unit that detects the vibration of the water tank and the vibration amount detected by the vibration detection unit is less than a predetermined amount, the control unit Is controlled to be dispersed in the annular container.
  • the present invention distributes the rolling elements so that the rolling elements in the annular container do not become unbalanced in the drum.
  • control unit rotates the drum at a rotational speed that is equal to or lower than the resonance speed and the centrifugal force applied to the laundry in the drum is greater than the gravity, and disperses the rolling elements in the annular container.
  • the present invention disperses the rolling elements in the annular container at a rotational speed equal to or lower than the resonance rotational speed, thereby eliminating the unbalanced state in the drum caused by the rolling elements before the vibration becomes large. Vibration can be suppressed.
  • control unit controls the drive motor to increase or decrease the acceleration of the drum, thereby controlling the rolling elements to be dispersed in the annular container.
  • the present invention can disperse the rolling elements in the annular container in parallel with the dehydration activation that shifts the rotational speed of the drum to high speed. Therefore, it can disperse
  • control unit controls the drive motor to increase or decrease the number of rotations of the drum so that the rolling elements are dispersed in the annular container.
  • the present invention accelerates the rolling elements in the annular container to move the rolling elements forward in the rotational direction further forward, and further delays the rolling elements behind the rotational direction due to deceleration, thereby providing a plurality of rolling elements.
  • the rolling elements can be dispersed by repeating this process.
  • the present invention detects the vibration of the water tank by the vibration detection unit, determines the unbalanced state of the laundry based on the detection result, and changes the rotation pattern of the drum when the unbalance amount is small.
  • Necessary rolling elements can be controlled according to the unbalanced state. In this way, even when the laundry unbalance is small, by controlling the rolling elements, it is possible to start up to the resonance rotational speed with low vibration, so that the drum vibration is minimized when passing through the resonance rotational speed. be able to.
  • control unit reduces the rotational speed of the drum to a first rotational speed at which the centrifugal force and the gravity of the laundry are substantially balanced, and the centrifugal force of the laundry becomes larger than the gravity. Accelerate to a rotational speed of 2.
  • the rolling elements when accelerating to the second rotational speed, since the gravity applied to the laundry rotates at a rotational speed smaller than the centrifugal force, the rolling elements move in the annular container in a biased state. At that time, since the position of the laundry unbalance and the rolling element are moved asynchronously, the rolling element moves little by little with respect to the laundry. Furthermore, by reducing the rotational speed to such an extent that the laundry unbalance does not collapse, that is, the rotational speed at which the centrifugal force and the gravity of the laundry are substantially balanced, the rolling elements cannot maintain the biased state, and the laundry unbalance is further reduced. Since it moves at a speed delayed from the balance state, the rolling elements are dispersed.
  • the rolling elements can be further dispersed. For this reason, a balanced state can be maintained even when the amount of unbalance is small. As a result, the vibration of the drum can be minimized when passing through the resonance rotational speed.
  • control unit maintains the rotation speed of the drum at the first rotation speed for the first predetermined time, and then maintains the second rotation speed at the second rotation time for the first predetermined time. The time was longer than the second predetermined time.
  • the present invention allows the rolling elements to disperse by dropping to a rotational speed that does not break the unbalance of the laundry, and after maintaining for a certain period of time, the rolling elements that could not be dispersed Can be applied to Also, since the moment after acceleration can be made shorter than the time after deceleration, the momentary force can be applied, so that the rolling elements can be efficiently distributed evenly with the unbalance of the laundry, and the resonant rotation speed When passing, drum vibration can be minimized.
  • the present invention includes a vibration detection unit that detects the vibration of the water tank, and the control unit detects the vibration of the water tank again by the vibration detection unit after the drum performs deceleration and acceleration.
  • the vibration amount by the part is smaller than the predetermined amount, the drum is raised to a rotational speed higher than the resonance rotational speed.
  • the present invention after repeatedly decelerating and accelerating, the rolling elements are evenly distributed with the unbalance of the laundry.
  • the vibration of the drum can be reliably suppressed when the resonance rotational speed passes.
  • the rolling elements In the washing machine according to the present invention, it is possible to always arrange the rolling elements at an optimal position with the laundry unbalance regardless of the unbalance amount of the laundry. For this reason, the rolling element generates a correction force, can further reduce the unbalance of the laundry, and can suppress vibrations at the time of starting, so that it is useful as a drum-type washing machine or a cleaning device for home use or business use. .

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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 porte sur une machine à laver à tambour, laquelle machine a, disposés sur celle-ci : un tambour (3) qui est supporté de façon à pouvoir tourner par un axe de rotation qui est soit horizontal soit oblique ; un réservoir d'eau (2) qui renferme le tambour (3) ; un récipient de forme annulaire (17) qui est positionné dans le tambour (3) ; et un corps de rotation (8) qui est mobile à l'intérieur du récipient de forme annulaire (17). La machine à laver du type à tambour comprend de plus : un moteur d'entraînement (4) qui entraîne en rotation le tambour (3) ; une unité de détection de courant qui détecte un courant du moteur d'entraînement (4) ; une unité de détection d'oscillation (12) qui détecte une oscillation du réservoir d'eau (2) ; et une unité de commande (6) qui commande le moteur d'entraînement (4), etc. A une vitesse de rotation de résonance ou en dessous de celle-ci, et lors de la rotation à une vitesse de rotation à laquelle une force centrifuge agissant sur la lessive dans le tambour (3) est supérieure à la gravité, l'unité de commande (6) détecte, à l'aide de l'unité de détection d'oscillation, (12) l'oscillation du réservoir d'eau (2), et, si le degré d'oscillation qui est détecté par l'unité de détection d'oscillation (12) est inférieur à un degré prescrit, commande la vitesse de rotation du tambour (3), et provoque une dispersion des corps en agitation (8).
PCT/JP2013/002677 2012-04-23 2013-04-22 Machine à laver à tambour WO2013161251A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380021536.5A CN104246051B (zh) 2012-04-23 2013-04-22 滚筒式洗衣机
DE112013002171.4T DE112013002171T5 (de) 2012-04-23 2013-04-22 Waschmaschine vom Trommeltyp

Applications Claiming Priority (4)

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JP2012-097376 2012-04-23
JP2012097376 2012-04-23
JP2013026289A JP2013240577A (ja) 2012-04-23 2013-02-14 ドラム式洗濯機
JP2013-026289 2013-02-14

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WO2013161251A1 true WO2013161251A1 (fr) 2013-10-31

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CN (1) CN104246051B (fr)
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EP2910673A3 (fr) * 2014-02-19 2015-11-18 Samsung Electronics Co., Ltd. Machine à laver avec compensateurs et son procédé de commande
JP2017529220A (ja) * 2014-09-28 2017-10-05 青島海爾ドラム洗濯機有限公司 洗濯機用内槽及び洗濯機

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JP6282492B2 (ja) * 2014-03-06 2018-02-21 アクア株式会社 ドラム式洗濯機
JP6444622B2 (ja) 2014-06-12 2018-12-26 アクア株式会社 ドラム式洗濯機
JP6397254B2 (ja) * 2014-08-04 2018-09-26 アクア株式会社 ドラム式洗濯機
JP6564173B2 (ja) * 2014-09-02 2019-08-21 アクア株式会社 ドラム式洗濯機
DE102014221348A1 (de) * 2014-10-21 2016-04-21 BSH Hausgeräte GmbH Vorrichtung zum Ausgleichen einer Unwucht von Wäschetrommeln
JP6507367B2 (ja) * 2015-04-09 2019-05-08 パナソニックＩｐマネジメント株式会社 ドラム式洗濯機
DE102015219284A1 (de) * 2015-10-06 2017-04-06 BSH Hausgeräte GmbH Haushaltsgerät zur Pflege von Wäschestücken mit einer Unwuchtausgleichsvorrichtung an einer Kette aufgefädelten Ausgleichselementen
JP2018061536A (ja) * 2016-10-11 2018-04-19 日立アプライアンス株式会社 ドラム洗濯機
WO2018184734A1 (fr) * 2017-04-05 2018-10-11 Antonio Chiriatti Appareil de traitement de linge
IT201700037265A1 (it) * 2017-04-05 2018-10-05 Antonio Francesco Chiriatti Bilanciatore per controllo attivo di sbilanciamento in un elettrodomestico
DE102017219081A1 (de) * 2017-10-25 2019-04-25 BSH Hausgeräte GmbH Verfahren zum Betreiben eines Haushaltsgeräts zur Pflege von Wäschestücken mit Erkennung einer Unwucht anhand von zwei Eingangskanälen sowie Haushaltsgerät
JP7369394B2 (ja) * 2019-05-10 2023-10-26 青島海爾洗衣机有限公司 洗濯機
JP2020188995A (ja) * 2019-05-23 2020-11-26 青島海爾洗衣机有限公司ＱｉｎｇＤａｏ Ｈａｉｅｒ Ｗａｓｈｉｎｇ Ｍａｃｈｉｎｅ Ｃｏ．，Ｌｔｄ． ドラム式洗濯機

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JP2017529220A (ja) * 2014-09-28 2017-10-05 青島海爾ドラム洗濯機有限公司 洗濯機用内槽及び洗濯機

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CN104246051B (zh) 2016-06-15
JP2013240577A (ja) 2013-12-05
DE112013002171T5 (de) 2015-01-22

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