EP2604733B9 - Lave-linge du type a tambour - Google Patents

Lave-linge du type a tambour Download PDF

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Publication number
EP2604733B9
EP2604733B9 EP12749382.3A EP12749382A EP2604733B9 EP 2604733 B9 EP2604733 B9 EP 2604733B9 EP 12749382 A EP12749382 A EP 12749382A EP 2604733 B9 EP2604733 B9 EP 2604733B9
Authority
EP
European Patent Office
Prior art keywords
rotary drum
water tank
vibration
washing machine
drum
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP12749382.3A
Other languages
German (de)
English (en)
Other versions
EP2604733A4 (fr
EP2604733B1 (fr
EP2604733A1 (fr
Inventor
Tomoyuki Taguchi
Yutaka Inoue
Masahiro Itami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
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Publication date
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Publication of EP2604733A1 publication Critical patent/EP2604733A1/fr
Publication of EP2604733A4 publication Critical patent/EP2604733A4/fr
Publication of EP2604733B1 publication Critical patent/EP2604733B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D06F34/32—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by graphical features, e.g. touchscreens

Definitions

  • the present invention relates to drum-type washing machine for washing a laundry contained in a rotary drum.
  • Patent Document 1 Conventionally, as a drum-type washing machine of this type, for example, there has been known a washing machine described in Patent Document 1.
  • the washing machine in Patent Document 1 employs a control scheme for performing, a predetermined number of times, operations for temporarily interrupting spin-drying, further stopping the rotation of the rotary drum and modifying unevenness of clothes and, thereafter, rotating the rotary drum again, for performing spin-drying, in order to resolve imbalance abnormalities induced during spin-drying.
  • Fig. 5 is a flow chart of a spin-drying process in the conventional drum-type washing machine described in Patent Document 1.
  • a drainage operation is performed in a step 101.
  • the rotary drum is operated to rotate forwardly and reversely (disentangling processes) at a predetermined rotation speed (e.g., about 40 r/min), in order to disentangle laundries such as clothes which are unevenly laid.
  • the rotation speed of the rotary drum is mildly increased to a rotation speed (about 70 r/min) which is enough to cause the laundries to be adhered to the inner surface of the rotary drum.
  • the rotation speed of the rotary drum is increased to a rotation speed (e.g., about 80 r/min) which is lower than the primary resonance rotation speed, and the rotary drum is controlled to be maintained at this rotation speed for a predetermined time period. Further, at this time, detections of the presence or absence of rotational unevenness, namely imbalance abnormalities, are performed. If there is an imbalance abnormality equal to or higher than a predetermined level, it is determined that there is larger rotational unevenness and the laundries are in a poor balance state, and the control shifts to a step 105.
  • N indicates the number of times the steps 102 to 104 have been performed. If N is less than 4, the rotary drum is temporarily stopped in a step 106, further, 1 value is added to the current N value in a step 107, and the control returns to the step 102.
  • N has gotten to be 4 or more after the operations in the steps 102 to 107 have been repeated, it is regarded that the unevenness of the laundries could not be resolved in the disentangling process in the step 102, and the control shifts to a step 108.
  • step 108 it is determined whether or not N has gotten to be equal to 10. If N is less than 10, the control shifts to a step 110. In the step 110, an operation for supplying washing water into the rotary drum to modifying the unevenness of the laundries is performed. After the completion of this operation, the control returns to the step 101. On the other hand, if N is 10 or more in the step 108, the control shifts to a step 109. In the step 109, it is regarded that the unevenness of the laundries could not be resolved and, thus, the occurrence of an imbalance abnormality is displayed, and the running is stopped.
  • the rotation speed of the rotary drum is increased to near the primary resonance rotation speed (e.g., 120 to 140 r/min), and the presence or absence of an imbalance abnormality at this rotation speed is determined, based on output signals (which are also referred to as vibration output values) from the vibration detector. If there has occurred an imbalance abnormality, the control shifts to a step 105. If there has occurred no imbalance abnormality and the operation is normal, the control shifts to a step 112.
  • the rotation speed of the rotary drum is increased to near the secondary resonance rotation speed (e.g., 141 to 330 r/min), and the presence or absence of an imbalance abnormality at this rotation speed is determined, based on output signals from the vibration detector. If there has occurred an imbalance abnormality, the control shifts to the step 105. If there has occurred no imbalance abnormality and the operation is normal, the control shifts to a step 113.
  • the secondary resonance rotation speed e.g., 141 to 330 r/min
  • the rotation speed of the rotary drum is increased to near a rotation speed (e.g., 800 to 900 r/min) which makes it harder to resolve the adhesion of the laundries to the rotary drum, and the presence or absence of an imbalance abnormality at this rotation speed is determined, based on output signals from the vibration detector. If there has occurred an imbalance abnormality, the control shifts to the step 105. If there has occurred no imbalance abnormality and the operation is normal, the control shifts to a step 114.
  • a rotation speed e.g. 800 to 900 r/min
  • the rotation speed of the rotary drum is increased to a rotation speed (e.g., 900 r/min or more) which makes it harder to resolve the adhesion of the laundries to the rotary drum, and the presence or absence of an imbalance abnormality at this rotation speed is determined, based on output signals from the vibration detector. If there has occurred no imbalance abnormality and the operation is normal, the control shifts to a step 115.
  • a rotation speed e.g., 900 r/min or more
  • step 115 the rotation speed of the rotary drum is gradually increased toward a maximum rotation speed, and every time the rotation speed has been increased, the control returns to the step 114 where the presence or absence of an imbalance abnormality at this rotation speed is determined. If there has occurred no imbalance abnormality and the operation is normal, the control shifts to the step 115 where the rotation speed of the rotary drum is increased to the maximum rotation speed. Thereafter, the control shifts to a step 117. On the other hand, if there has occurred an imbalance abnormality, the control shifts to a step 116 where the rotary drum is operated for a predetermined time period while being maintained at the rotation speed which has induced the imbalance abnormality. Thereafter, the control shifts to the step 117. In the step 117, the rotation of the rotary drum is stopped. Thereafter, the control shifts to a subsequent process in a step 118.
  • JP 2009 050349 A discloses a washing machine including a rotary drum, a water tub resiliently supported and internally having the rotor drum so as to be rotated, a driving motor for rotatably driving the rotary drum, acceleration-sensing means for sensing the vibration of the water tub, and control means for controlling the driving motor and successively controlling the rinsing and spin-drying steps.
  • the controlling means reversely rotates the rotary drum at a rate where the center of gravity and centrifugal force of the laundry are substantially equal to each other.
  • JP 2007 236585 A discloses a washing machine provided with a vibration detecting means detecting vibration of a receiving cylinder, an unbalance amount estimation means estimating an unbalance amount according to an output of the vibration detecting means in a state capable of detecting a resonance characteristic of a support means, and a control means controlling the driving of a motor.
  • the control means outputs a controlled variable based on the outputs of the vibration detecting means and the unbalance amount estimation means can highly precisely estimate the unbalance amount in the dewatering, and reduce the unbalance amount by a motor rotating operation so as to reduce the vibration and noise due to the unbalance and shorten the dewatering.
  • Patent Document 1 JP No. 2009-213803 A
  • the aforementioned conventional drum-type washing machine is adapted such that it temporality stops the rotation of the rotary drum, further performs a disentangling process and, thereafter, restarts a spin-drying operation, in the event of the occurrence of an imbalance abnormality.
  • the rotary drum is always rotated in the same direction. Therefore, the water tank is vibrated in substantially the same manner, every time.
  • imbalance abnormalities cannot be resolved and, thus, the running of the washing machine is stopped before the completion of spin-drying processes, in many cases. This occurs frequently in cases of spin-drying smaller amounts of clothes.
  • the aforementioned conventional drum-type washing machine has the problem of a higher possibility that running of the washing machine is stopped before the completion of spin-drying processes.
  • a dram-type washing machine of the invention comprise the features of claim 1.
  • the drum-type washing machine according to the present invention can improve the damping characteristics.
  • a drum-type washing machine comprising:
  • a compression force received by the anti-vibration damper from the rotary drum being rotated in the forward direction is larger than those received by the two support dampers from the rotary drum being rotated in the forward direction.
  • the drum-type washing machine according to the first or second aspect, wherein, in the spin-drying process, after stopping the rotation of the rotary drum since a vibration value of the water tank which has been detected by the vibration detector has exceeded a predetermined threshold value, the controller controls the motor to restart, a predetermined number of times, a spin-drying operation in a forward direction for rotating the rotary drum in the forward direction again, and, thereafter, when a vibration value of the water tank which has been detected by the vibration detector exceeds a predetermined threshold value, the controller controls the motor to stop the rotation of the rotary drum and, then, to restart a spin-drying operation in a reverse direction for rotating the rotary drum in the reverse direction.
  • the drum-type washing machine according to any one of the first to third aspects, wherein the anti-vibration damper is provided in a right side with respect to the axis of rotation in the rotary drum when viewed at the front surface, and the forward direction corresponds to counterclockwise rotations.
  • the drum-type washing machine according to any one of the first to third aspects, wherein the anti-vibration damper is provided in a left side with respect to the axis of rotation in the rotary drum when viewed at the front surface, and the forward direction corresponds to clockwise rotations.
  • Fig. 1 is a longitudinal cross-sectional view of a drum-type washing machine according to an embodiment of the present invention.
  • Fig. 2 is a front view of the inside of the drum-type washing machine in Fig. 1 , when viewed at its front surface.
  • the water tank unit 49 includes a water tank 42, a rotary drum 43, and a motor 45.
  • the water tank 42 is placed swingably inside the washing machine housing 41.
  • the rotary drum 43 is rotatably placed.
  • the rotary drum 43 is provided, at the rotational center portion thereof, with a rotation shaft (a rotational center shaft) 44 which extends in the horizontal direction.
  • the motor 45 which is placed near the rear surface of the water tank 42, is coupled to the rotation shaft 44 via a belt 46.
  • the motor 45 drives and rotates the rotary drum 43 in the forward direction or in the reverse direction.
  • On the inner wall surface of the rotary drum 43 there are provided a plurality of protuberances 47 for stirring laundries.
  • the rotary drum 43 is provided, in its outer peripheral surface, with a plurality of water passage holes 48.
  • the water tank 42 is supported by a single anti-vibration damper 91 and two support dampers 51 for attenuating and preventing vibrations, which are mounted to a lower portion of the washing machine housing 41. Between the water tank 42 and the upper portion of the washing machine housing 41, a plurality of spring bodies 50 are provided, as illustrated in Fig. 2 .
  • the water tank 42 is swingably supported, in an anti-vibration manner, by the plurality of the spring bodies 50.
  • the two support dampers 51 are dampers provided for the sake of supporting the water tank 42 and suppressing vibrations therein.
  • the two support dampers 51 are placed symmetrically in the right and left direction when viewed at the front surface, as illustrated in Fig. 2 . Further, as illustrated in Fig. 1 , the two support dampers 51 are placed closer to the front surface than the position G of the center of gravity of the water tank unit 49 in the forward and rearward direction.
  • the anti-vibration damper 91 is a damper provided mainly for the sake of suppressing vibrations in the water tank 42.
  • the anti-vibration damper 91 is placed closer to the rear surface than the position G of the center of gravity, as illustrated in Fig. 1 .
  • the anti-vibration damper 91 is coupled to the washing machine housing 41 through a housing support portion 93 and, further, is coupled to the water tank 42 through a water tank support portion 94. Further, the anti-vibration damper 91 may be also coupled indirectly to the washing machine housing 41 and the water tank support portion 94 through other members.
  • the water tank 42 is supported by the respective dampers 51 and 91 in a preferably-balanced manner, so that vibrations therein are attenuated and prevented.
  • the dampers 51 and 91 are constituted by friction dampers.
  • the friction dampers interiorly contain friction pads (not illustrated). These friction pads are adapted to produce friction between the pads and tubes (not illustrated) to generate friction forces, and these friction forces become attenuation forces for suppressing vibrations in the water tank 42.
  • the anti-vibration damper 91 is provided such that it receives larger compression forces than those received by the two support dampers 51, from the rotary drum 43 rotating in the forward direction (the counterclockwise rotation) A.
  • the anti-vibration damper 91 is provided such that the straight line connecting the housing support portion 93 and the water tank support portion 94 to each other is inclined by an angle ⁇ toward the upstream side in the direction A of forward rotations, with respect to the straight line connecting the housing support portion 93 and the center position O of the water tank 42 to each other.
  • the anti-vibration damper 91 is provided such that the angle of inclination thereof with respect to the bottom surface of the washing machine housing 41, which extends in the horizontal direction, is smaller than those of the support dampers 51. Accordingly, the anti-vibration damper 91 exerts a larger attenuation effect, particularly, on vibrations in the horizontal direction (the right and left direction in Fig. 2 ).
  • the attenuation forces of the support dampers 51 can be made equal to the attenuation force of the anti-vibration damper 91 and, also, the attenuation force of the anti-vibration damper 91 can be made slightly smaller than the attenuation forces of the support dampers 51.
  • the washing machine housing 41 is provided with a housing opening portion, at a position faced to a load outlet/inlet 53 in the rotary drum 43.
  • a lid body 52 is provided so as to cover the housing opening portion, in an openable and closable manner. By opening the lid body 52, it is possible to remove or put laundries from or into the rotary drum 43 through the load outlet/inlet 53.
  • the housing opening portion is coupled to a front portion of the water tank 42 through a seal packing 92.
  • the seal packing 92 is provided to suppress vibrations in the water tank unit 49 and, to form watertight sealing for preventing intrusion of water into the space between the washing machine housing 41 and the water tank 42.
  • a control device 81 is provided, at an upper portion within the washing machine housing 41.
  • the control device 81 is constituted by a microcomputer or the like.
  • the control device 81 controls the motor 45, a first electromagnetic valve 57, a second electromagnetic valve 58, a drainage pump 63, and a circulation pump 67, according to mode settings and control programs, in order to execute laundering processes including washing processes, rinsing processes, and spin-drying processes.
  • a water supply passage 54 for supplying a washing water (e.g., such as a tap water) into the water tank 42, a drainage passage 55 for discharging the washing water within the water tank 42 to the outside of the washing machine housing 41, and a water circulation passage 56 for circulating the washing water within the water tank 42.
  • a washing water e.g., such as a tap water
  • a drainage passage 55 for discharging the washing water within the water tank 42 to the outside of the washing machine housing 41
  • a water circulation passage 56 for circulating the washing water within the water tank 42.
  • the water supply passage 54 is constituted by a first water supply hose 59, a second water supply hose 60, a detergent accommodating portion 61, and a water supply passage 62.
  • the first water supply hose 59 is provided with the first electromagnetic valve 57.
  • the second water supply hose 60 is provided with the second electromagnetic valve 58.
  • the detergent accommodating portion 61 accommodates a drawer portion (not illustrated) which contains a detergent or a softening agent, such that it can be pulled out therefrom from the outside.
  • a washing water is flowed into the first water supply hose 59 or the second water supply hose 60.
  • the washing water having flowed into the first water supply hose 59 or the second water supply hose 60 passes through the detergent accommodating portion 61 and the water supply passage 62 and, further, is supplied to the inside of the water tank 42.
  • the drainage passage 55 is constituted by a drainage tube 64, a filter case 88, a drainage pump 63, and a drainage hose 66.
  • the drainage tube 64 is connected to the filter case 88 and to a drainage port 95 provided in a recessed portion 71 in the bottom portion of the water tank 42.
  • the filter case 88 is provided, inside thereof, with a lint filter 65 for collecting lint and the like within the washing water.
  • the lint filter 65 is adapted such that it can be detached therefrom by outwardly pulling a filter grip 89 provided in a lower portion of the front surface of the washing machine housing 41.
  • the drainage pump 63 is connected to the filter case 88 and to the drainage hose 66.
  • the drainage hose 66 is provided to extend from the inside of the washing machine housing 41 up to outside and above the washing machine housing 41. At predetermined timings such as when a washing process has been completed or when a rinsing process has been completed, the drainage pump 63 is driven, which causes the washing water within the water tank 42 to be discharged to the outside by passing through the drainage tube 64, the filter case 88, the drainage pump 63, and the drainage hose 66, in the mentioned order.
  • the filter case 88 is placed at a lower right portion of the front surface of the washing machine housing 41, in order to make the filter grip 89 have preferable manipulability.
  • the drainage port 95 is provided in the right side of the water tank 42 with respect to the longitudinal center thereof, when viewed at the front surface, in order to efficiently place the drainage tube 64.
  • the water circulation passage 56 is provided for circulating the washing water within the water tank 42, at predetermined timings such as during a pre-washing process, a washing process or a rinsing process. With the water circulation passage 56, it is possible to cause the detergent to be early dissolved in the washing water and, also, it is possible to prevent unevenness of the detergent. This results in improvement of the washing and rinsing abilities of the drum-type washing machine.
  • the water circulation passage 56 is constituted by the drainage tube 64, the filter case 88, an inflow side passage 68, the circulation pump 67, a discharge side passage 69, and jet ports 70.
  • the inflow side passage 68 is a passage for connecting the filter case 88 and the circulation pump 67 to each other.
  • the discharge side passage 69 is a passage for connecting the circulation pump 67 and the jet ports 70 to each other.
  • the jet ports 70 are provided in a front portion of the water tank 42 in such a manner as to eject, into the rotary drum 43, the washing water passing through the discharge side passage 69.
  • the circulation pump 67 When the circulation pump 67 is driven, the washing water within the water tank 42 is passed through the drainage tube 64, the filter case 88, the inflow side passage 68, the circulation pump 67, the discharge side passage 69, and the jet ports 70, in the mentioned order, and is ejected into the rotary drum 43 as a circulated water indicated by a solid-line arrow. Further, a plurality of jet ports 70 are provided such that they are arranged in the circumferential direction of the rotary drum 43. Thus, the circulated water is sprinkled, in plural directions, toward the laundries within the rotary drum 43.
  • a heater 72 constituted by a sheathed heater or the like, in order to heat the washing water.
  • the heater 72 is placed such that its longitudinal direction is coincident with or substantially coincident with the horizontal direction. The heater 72 heats the washing water within the water tank 42.
  • the washing water having been heated by the heater 72 is circulated through the water circulation passage 56, further is ejected into the rotary drum 43 and is sprinkled onto the laundries. Thereafter, the washing water having been sprinkled onto the laundries is moved into the water tank 42 through the water passage holes 48 and the washing water is heated by the heater 72. These operations are repeated. Since the washing water is heated, molecular activities in the washing water are revitalized and, also, the detergent is activated. This results in improvement of the washing ability of the washing water, thereby reducing washing unevenness in the laundries. Further, near the heater 72, there is provided a temperature detector 73 such as a thermistor for detecting the temperature of water.
  • the water tank 42 is provided, in its side wall in the rear side of the bottom portion, with an air trap 74 so as to communicate with the drainage tube 64.
  • the air trap 74 is connected to an air tube 75.
  • the air tube 75 is connected to a water level detector 76 which is provided at an upper portion within the washing machine housing 41.
  • the water level detector 76 is constituted by a pressure sensor.
  • the water level detector 76 is adapted to detect the water level of the washing water within the water tank 42, based on the water pressure of the washing water within the water tank 42, namely based on the pressure within the air trap 74 which corresponds thereto.
  • a coupling hose 77 which couples an upper portion of the water tank 42 to an upper portion of the rear surface of the detergent accommodating portion 61.
  • the coupling hose 77 has the function of removing air within the water tank 42 which has been pressurized during laundering processes.
  • a vibration detector 78 for detecting vibrations in the water tank unit 49.
  • an acceleration sensor is employed as the vibration detector 78, wherein the acceleration sensor is adapted to detect vibration components in three-dimensional directions, which are the forward and rearward direction (the X-axis direction), the right and left direction (the Y-axis direction), and the upward and downward direction (the Z-axis direction), rather than vibrations only in a single direction.
  • vibrations in the water tank unit 49 do not always occur only in a single direction.
  • the vibration detector 78 the acceleration sensor adapted to detect vibrations in plural directions, it is possible to detect vibrations in the water tank unit 49 with higher accuracy.
  • the control device 81 controls operations, based on results of detections by the vibration detector 78.
  • the washing machine housing 41 is provided with an operation display portion 79, at an upper portion of its front surface.
  • the operation display portion 79 is provided with an input setting portion 80 which enables making settings (selections) of various functions and modes such as running courses, and a display portion 96 (see Fig. 3 ) which displays information having been inputted to the input setting portion 80.
  • the user can make settings of various functions and modes such as running courses, by performing inputting to the input setting portion 80.
  • Fig. 3 is a circuit diagram illustrating the structures relating to the control device in the drum-type washing machine according to the embodiment of the present invention, by indicating portions thereof in a block manner.
  • the control device 81 includes a controller 82, and a load drive portion 86. If a power switch 84 is turned on, the controller 82 starts controlling respective portions, by being supplied with electric power from a commercial power source 83.
  • the controller 82 controls the load drive portion 86, based on output signals from the water level detector 76, the temperature detector 73, a cloth amount detector 85, the vibration detector 78, and a rotation speed detector 90.
  • the load drive portion 86 is constituted by a bidirectional thyristor, a relay, and the like.
  • the load drive portion 86 operates the motor 45, the heater 72, the first electromagnetic valve 57, the second electromagnetic valve 58, the drainage pump 63, the circulation pump 67, and the like, under the control of the controller 82.
  • washing processes, rinsing processes, and spin-drying processes are performed.
  • the cloth amount detector 85 is adapted to detect the amount of laundries within the rotary drum 43.
  • the rotation speed detector 90 is adapted to detect the rotation speed of the rotary drum 43, by detecting the number of rotations of the rotary drum 43 per unit time.
  • the controller 82 displays, information based on the contents of settings having been inputted to the input setting portion 80 on the display portion 96. Further, when some sorts of abnormalities in operations of the respective portions occur, the controller 82 displays the fact that there have occurred such abnormalities on the display portion 96 and, further, generates a notification through a notification portion 87.
  • Figs. 4A and 4B illustrate flow charts of control in spin-drying process in the drum-type washing machine according to the embodiment of the present invention.
  • a spin-drying process is started in a step S1
  • the motor 45 is driven to rotate the rotary drum 43 at a predetermined rotation speed (e.g., about 50 r/min), while reversing the direction of rotations thereof (changing the direction of rotations thereof in such a way as to alternately rotate it clockwise and counterclockwise), in a step S2.
  • a predetermined rotation speed e.g., about 50 r/min
  • the clothes having been entangled with one another during washing processes and rinsing processes within the rotary drum 43 are disentangled (a disentangling process).
  • the vibration detector 78 detects vibration values of the water tank unit 49 (vibration values in three directions, which are the forward and rearward direction, the right and left direction, and the upward and downward direction) when the rotation speed of the rotary drum 43 is 85 to 90 r/min, and the controller 82 compares these detected vibration values with a threshold value "a". If the vibration values of the water tank unit 49 which have been detected in the step S4 are equal to or larger than the threshold value "a" (in the case of NO), the control shifts to a step S19.
  • step S19 the rotation of the rotary drum 43 is stopped.
  • step S20 the controller 82 determines whether or not the number of times the rotation of the rotary drum 43 has been stopped is less than 20. If the number of times the rotation of the rotary drum 43 has been stopped is less than 20 in the step S20 (in the case of YES), the control returns to the step S2, in order to disentangle the clothes having been entangled with one another. If the number of times the rotation of the rotary drum 43 has been stopped has reached 20 in the step S20 (in the case of NO), the control shifts to a step S21 (see Fig. 4B ) which will be described later.
  • the control shifts to a step S5.
  • the rotary drum 43 is kept rotating counterclockwise, and the rotation speed thereof is increased.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 90 to 200 r/min, and the controller 82 compares these detected vibration values with a threshold value "b". If the vibration values of the water tank unit 49 which have been detected in the step S6 are equal to or larger than the threshold value "b" (in the case of NO), the control shifts to the aforementioned step S19.
  • the control shifts to a step S7.
  • the rotary drum 43 is kept rotating counterclockwise, and the rotation speed thereof is increased.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 200 to 300 r/min, and the controller 82 compares these detected vibration values with a threshold value "c". If the vibration values of the water tank unit 49 which have been detected in the step S8 are equal to or larger than the threshold value "c" (in the case of NO), the control shifts to the aforementioned step S19.
  • the control shifts to a step S9.
  • the rotary drum 43 is kept rotating counterclockwise, and the rotation speed thereof is increased.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 300 to 320 r/min, and the controller 82 compares these detected vibration values with a threshold value "d". If the vibration values of the water tank unit 49 which have been detected in the step S10 are equal to or larger than the threshold value "d" (in the case of NO), the control shifts to the aforementioned step S19.
  • the control shifts to a step S11.
  • the rotary drum 43 is kept rotating counterclockwise, and the rotation speed thereof is increased to 400 r/min. Thereafter, in a step S12, the rotation speed of the rotary drum 43 is further increased.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 410 to 420 r/min, and the controller 82 compares these detected vibration values with a threshold value "e". If the vibration values of the water tank unit 49 which have been detected in the step S13 are equal to or larger than the threshold value "e" (in the case of NO), the control shifts to the aforementioned step S19.
  • the control shifts to a step S14.
  • the rotary drum 43 is kept rotating counterclockwise, and the rotation speed thereof is increased to 700 r/min.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 700 r/min, and the controller 82 compares these detected vibration values with a threshold value "f".
  • the controller 82 determines that it is dangerous to further increase the rotation speed of the rotary drum 43 and, thus, maintains the rotation speed of the rotary drum 43 at 700 r/min. Thereafter, the control shifts to a step S18.
  • the control shifts to a step S16.
  • the controller 82 determines a maximum rotation speed which can be reached, from the vibration values of the water tank unit 49 which have been detected in the step S15.
  • the step S17 the rotation speed of the rotary drum 43 is increased to the maximum rotation speed determined in the step S16.
  • the rotary drum 43 is rotated counterclockwise at the aforementioned rotation speed (700 r/min or the maximum rotation speed), for a predetermined time period. After the elapse of the predetermined time period, the rotation of the rotary drum 43 is stopped, and the spin-drying process is completed.
  • the control shifts to the step S21.
  • the motor 45 is driven to rotate the rotary drum 43 at a predetermined rotation speed (e.g., about 50 r/min), while reversing the direction of rotations thereof.
  • a predetermined rotation speed e.g., about 50 r/min
  • a step S22 the rotary drum 43 is rotated clockwise (rotated in the reverse direction) in the opposite direction from the direction of normal counterclockwise rotations (the direction of rotations for standard spin-drying), and the rotation speed thereof is increased.
  • the rotary drum 43 is rotated clockwise in the opposite direction from the direction of normal counterclockwise rotations, for the following reasons.
  • the number of times the rotation of the rotary drum 43 has been stopped has reached 20, frequently, in cases of performing spin-drying processes on smaller amounts of clothes, which tend to be brought into imbalance states within the rotary drum 43.
  • the clothes are liable to move, at a dash, from lower left portions toward upper right portions when viewed at the front surface (see Fig. 2 ).
  • the water tank unit 49 is liable to vibrate in ellipses having longitudinal directions coincident with directions from lower left portions to upper right portion when viewed at the front surface.
  • the vibration detector 78 detects vibration values of the water tank unit 49 (in three directions, which are the forward and rearward direction, the right and left direction, and the upward and downward direction) when the rotation speed of the rotary drum 43 is 85 to 90 r/min, and the controller 82 compares these detected vibration values with a threshold value "a". If the vibration values of the water tank unit 49 which have been detected in the step S23 are equal to or larger than the threshold value "a" (in the case of NO), the control shifts to a step S34.
  • step S34 the rotation of the rotary drum 43 is stopped.
  • step S35 the controller 82 determines whether or not the number of times the rotation of the rotary drum 43 has been stopped (the cumulative number of times it has been stopped since the start of the spin-drying process) is less than 30. If the number of times the rotation of the rotary drum 43 has been stopped is less than 30 in the step S35 (in the case of YES), the control returns to the step S21, in order to disentangle the clothes having been entangled with one another.
  • the controller 82 determines that it is hard to disentangle the clothes having been entangled with each other, and the control shifts to a step S36.
  • the controller 82 interrupts the spin-drying process, further causes the display portion 96 to display the fact that an abnormality has occurred and, further, causes the notification portion 87 to generate a notification thereof.
  • the control shifts to a step S24.
  • the rotary drum 43 is kept rotating clockwise, and the rotation speed thereof is increased.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 90 to 200 r/min, and the controller 82 compares these detected vibration values with a threshold value "b". If the vibration values of the water tank unit 49 which have been detected in the step S25 are equal to or larger than the threshold value "b" (in the case of NO), the control shifts to the aforementioned step S34.
  • the control shifts to a step S26.
  • the rotary drum 43 is kept rotating clockwise, and the rotation speed thereof is increased.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 200 to 300 r/min, and the controller 82 compares these detected vibration values with a threshold value "c". If the vibration values of the water tank unit 49 which have been detected in the step S27 are equal to or larger than the threshold value "c" (in the case of NO), the control shifts to the aforementioned step S34.
  • the control shifts to a step S28.
  • the rotary drum 43 is kept rotating clockwise, and the rotation speed thereof is increased.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 300 to 320 r/min, and the controller 82 compares these detected vibration values with a threshold value "d". If the vibration values of the water tank unit 49 which have been detected in the step S29 are equal to or larger than the threshold value "d" (in the case of NO), the control shifts to the aforementioned step S34.
  • the control shifts to a step S30.
  • the rotary drum 43 is kept rotating clockwise, and the rotation speed thereof is increased to 400 r/min. Thereafter, in a step 31, the rotation speed of the rotary drum 43 is further increased.
  • the vibration detector 78 detects vibration values of the water tank unit 49 when the rotation speed of the rotary drum 43 is 410 to 420 r/min, and the controller 82 compares these detected vibration values with a threshold value "e". If the vibration values of the water tank unit 49 which have been detected in the step S32 are equal to or larger than the threshold value "e" (in the case of NO), the control shifts to the aforementioned step S34.
  • step S33 the controller 82 determines that the entanglement of the clothes has been resolved and, thus, stops the rotation of the rotary drum 43. Thereafter, the control shifts to the aforementioned step S14, further executes the operations in the steps S15 to S18 and completes the spin-drying process.
  • the rotary drum 43 is returned, in terms of the direction of rotations thereof, from clockwise rotations to counterclockwise rotations, because the drainage port 95 at a lower portion of the water tank 42 is provided in the right side with respect to the longitudinal center of the water tank 42 when viewed at the front surface. Namely, this is because, in this structure, water separated from the clothes is inhibited from being discharged through the drainage port 95, when the rotation speed has been increased while the rotary drum 43 has been kept rotating clockwise.
  • the drum-type washing machine according to the present embodiment is adapted such that it restarts spin-drying operations of a predetermined number of times and, if the number of these restarts exceeds a predetermined number, it restarts spin-drying operations by rotating the rotary drum 43 in the reverse direction.
  • This can prevent spin-drying processes from being interrupted halfway therethrough, since spin-drying operations are disabled due to imbalance abnormalities, particularly, in cases of performing spin-drying on smaller amounts of clothes.
  • This enables performing spin-drying processes to the end. Namely, with the drum-type washing machine according to the present embodiment, it is possible to suppress the occurrence of imbalance abnormalities and, thus, it is possible to suppress the running from being stopped before the completion of spin-drying processes.
  • the present invention is not limited to the aforementioned embodiment and can be implemented in other various aspects.
  • the threshold value of the number of times the rotation of the rotary drum 43 has been stopped is 20 in the aforementioned step S20, the present invention is not limited thereto.
  • the threshold value of the number of times the rotation of the rotary drum 43 has been stopped can be set to be either less than 20 (for example, 1) or larger than 20.
  • the anti-vibration damper 91 is provided in the right side with respect to the rotational center as illustrated in Fig. 2
  • the anti-vibration damper 91 can be provided in the left side with respect to the rotational center.
  • the direction of rotations of the rotary drum 43 can be set such that it is rotated clockwise (rotated in the forward direction) in the aforementioned steps S3 to S18, while the direction of rotations of the rotary drum 43 can be set such that it is rotated counterclockwise (rotated in the reverse direction) in the aforementioned steps S22 to S31, which can also obtain the same effects.
  • the vibration detector 78 is adapted to detect vibrations in the water tank unit 49
  • the vibration detector 78 can be also adapted to detect vibrations in the water tank 42, since vibrations in the water tank unit 49 are substantially the same as vibrations in the water tank 42. In this case, similarly, it is possible to obtain the same effects.
  • the rotary drum 43 is provided such that the axis of rotation 44 extends in the horizontal direction (see Fig. 1 ), the present invention is not limited thereto.
  • the rotary drum 43 may be provided such that the axis of rotation is inclined downwardly from the front-surface side toward the rear-surface side. In this case, similarly, it is possible to provide the same effects.
  • the drum-type washing machine according to the present invention is capable of suppressing the occurrence of imbalance abnormalities, thereby suppressing the running from being stopped before the completion of spin-drying processes. Accordingly, the drum-type washing machine according to the present invention can be also applied to applications of other washing machines having spin-drying functions, and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Claims (3)

  1. Lave-linge à tambour comprenant :
    un tambour rotatif (43) ayant un axe de rotation horizontal ou incliné vers le bas s'étendant d'une face avant vers une face arrière ;
    une cuve à eau (42) contenant le tambour rotatif (43) ;
    un moteur (45) faisant tourner le tambour rotatif (43) ;
    un détecteur de vibrations (78) prévu dans la cuve à eau (42) ; et
    un contrôleur (81) contrôlant le moteur (45) pour exécuter des processus de lavage comportant un processus d'essorage ;
    caratérisé par
    un boîtier de lave-linge (41) soutenant la cuve à eau (42) de manière élastique sur un côté inférieur, via un amortisseur anti-vibrations (91) et deux amortisseurs de soutien (51) ;
    où, dans une vue de face, l'amortisseur anti-vibrations (91) est prévu sur un côté droit par rapport à l'axe de rotation du tambour rotatif (43), et la marche avant correspond à une rotation contre le sens des aiguilles d'une montre ;
    ou bien
    où, dans une vue de face, l'amortisseur anti-vibrations (91) est prévu sur un côté gauche par rapport à l'axe de rotation du tambour rotatif (43), et la marche avant correspond à une rotation dans le sens des aiguilles d'une montre.
  2. Lave-linge à tambour selon la revendication 1,
    où
    une force de compression reçue par l'amortisseur anti-vibrations (91) en provenance du tambour rotatif (43) mis en rotation dans le sens de la marche avant est plus grande que celles reçues par les deux amortisseurs de support (51) en provenance du tambour rotatif (43) mis en rotation dans le sens de la marche avant.
  3. Lave-linge à tambour selon la revendication 1 ou 2,
    où
    lors du processus d'essorage, après l'arrêt de la rotation du tambour rotatif, étant donné qu'une valeur de vibration de la cuve à eau (42) détectée par le détecteur de vibrations (78) a dépassé une valeur seuil prédéterminée, le contrôleur (81) contrôle le moteur (45) de manière à ce qu'il recommence pour un nombre de fois prédéterminé une opération d'essorage en marche avant pour refaire tourner le tambour rotatif (43) en marche avant, et, ensuite, lorsqu'une valeur de vibration de la cuve à eau (42) détectée par le détecteur de vibrations (78) dépasse une valeur de seuil prédéterminée, le contrôleur (81) contrôle le moteur (45) de manière à ce qu'il arrête la rotation du tambour rotatif (43) et de manière à ce qu'il redémarre ensuite une opération d'essorage en marche arrière dans laquelle il fait tourner le tambour rotatif (43) en marche arrière.
EP12749382.3A 2011-02-23 2012-02-20 Lave-linge du type a tambour Active EP2604733B9 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011036741A JP5753974B2 (ja) 2011-02-23 2011-02-23 ドラム式洗濯機
PCT/JP2012/001115 WO2012114715A1 (fr) 2011-02-23 2012-02-20 Lave-linge du type à tambour

Publications (4)

Publication Number Publication Date
EP2604733A1 EP2604733A1 (fr) 2013-06-19
EP2604733A4 EP2604733A4 (fr) 2013-07-17
EP2604733B1 EP2604733B1 (fr) 2015-05-20
EP2604733B9 true EP2604733B9 (fr) 2015-08-05

Family

ID=46720509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12749382.3A Active EP2604733B9 (fr) 2011-02-23 2012-02-20 Lave-linge du type a tambour

Country Status (4)

Country Link
EP (1) EP2604733B9 (fr)
JP (1) JP5753974B2 (fr)
CN (1) CN103080405B (fr)
WO (1) WO2012114715A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103726254B (zh) * 2013-12-06 2017-12-01 南通芯迎设计服务有限公司 自动关机型防振波轮洗衣机
JP6472610B2 (ja) * 2014-06-11 2019-02-20 東芝ライフスタイル株式会社 洗濯機
CH710591B1 (de) * 2015-01-06 2018-11-30 V Zug Ag Waschmaschine mit Unwuchtkompensation und progressiver Lagerung.
JP6564997B2 (ja) * 2015-06-01 2019-08-28 パナソニックＩｐマネジメント株式会社 洗濯機
JP7071796B2 (ja) * 2016-07-06 2022-05-19 東芝ライフスタイル株式会社 洗濯機
JP7442126B2 (ja) * 2019-12-10 2024-03-04 青島海爾洗衣机有限公司 ドラム式洗濯機
JPWO2021145323A1 (fr) * 2020-01-15 2021-07-22
CN117144632A (zh) * 2022-05-23 2023-12-01 重庆海尔滚筒洗衣机有限公司 一种滚筒洗衣机的控制方法及滚筒洗衣机

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Publication number Priority date Publication date Assignee Title
US3509742A (en) * 1966-10-05 1970-05-05 Fritz Bauer Supporting structure for a washing machine
DE3437835A1 (de) * 1983-10-31 1985-05-23 I.T.W. España, S.A., Las Franquesas des Valles, Barcelona Lagersystem fuer waschmaschinentrommeln
JPS60171281U (ja) * 1984-04-20 1985-11-13 三洋電機株式会社 ドラム式脱水洗濯機
JP3636120B2 (ja) * 2001-09-10 2005-04-06 株式会社日立製作所 ドラム式洗濯機
JP4682881B2 (ja) * 2006-03-08 2011-05-11 パナソニック株式会社 洗濯機
JP4941176B2 (ja) * 2007-08-24 2012-05-30 パナソニック株式会社 洗濯機
JP4756054B2 (ja) 2008-03-13 2011-08-24 パナソニック株式会社 ドラム式洗濯機
JP2010075669A (ja) * 2008-09-01 2010-04-08 Panasonic Corp 洗濯機
JP2010279410A (ja) * 2009-06-02 2010-12-16 Panasonic Corp 洗濯機

Also Published As

Publication number Publication date
JP2012170684A (ja) 2012-09-10
EP2604733A4 (fr) 2013-07-17
WO2012114715A1 (fr) 2012-08-30
EP2604733B1 (fr) 2015-05-20
CN103080405A (zh) 2013-05-01
EP2604733A1 (fr) 2013-06-19
CN103080405B (zh) 2015-07-08
JP5753974B2 (ja) 2015-07-22

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