EP2385164A1 - Waschmaschine - Google Patents

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Publication number
EP2385164A1
EP2385164A1 EP10750533A EP10750533A EP2385164A1 EP 2385164 A1 EP2385164 A1 EP 2385164A1 EP 10750533 A EP10750533 A EP 10750533A EP 10750533 A EP10750533 A EP 10750533A EP 2385164 A1 EP2385164 A1 EP 2385164A1
Authority
EP
European Patent Office
Prior art keywords
rotation speed
fluid
motor
vibration
spinning
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.)
Withdrawn
Application number
EP10750533A
Other languages
English (en)
French (fr)
Other versions
EP2385164A4 (de
Inventor
Hiroshi Kohso
Makoto Oyama
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
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 Panasonic Corp filed Critical Panasonic Corp
Publication of EP2385164A1 publication Critical patent/EP2385164A1/de
Publication of EP2385164A4 publication Critical patent/EP2385164A4/de
Withdrawn legal-status Critical Current

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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
    • 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
    • D06F37/24—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 vertical axis
    • D06F37/245—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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/24—Spin speed; Drum movements
    • 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

Definitions

  • the present invention relates to a washing machine that performs washing, rinsing, spinning, and drying.
  • washing machines are largely classified into a pulsator type washing machine washing laundry (for example, clothes) by using a water stream and a drum type washing machine washing (that is, beating-washing) laundry by dropping the laundry.
  • a pulsator type washing machine the laundry is inserted into or extracted from the top side of the washing machine.
  • the direction of the washing tub is the vertical direction.
  • the pulsator type washing machine is called a vertical washing machine.
  • the direction of the washing tub of the drum type washing machine is the horizontal direction.
  • the drum type washing machine is called a horizontal washing machine.
  • a clothes dryer is of a horizontal type.
  • the drum type washing machine includes a rotary tub, and the rotary tub serves as both a washing tub and a spinning tub (hereinafter, referred to as a washing tub).
  • a washing tub When the laundry inside the washing tub is unbalanced, a large vibration may easily occur during spinning.
  • a washing machine that corrects the unbalanced amount by using a fluid balancer in which a liquid with a large specific gravity is inserted into a hollow container.
  • a washing machine which includes a fluid balancer divided into a plurality of parts in the radial direction and having a communication hole provided in a partition plate in order to reduce vibration and noise of a washing tub generated by the unbalance of the laundry during spinning.
  • a washing machine disclosed in Patent Literature 1 includes: a washing machine body, a washing tub supported by a suspension or a damper and has a bearing provided at a bottom thereof, a drum having a rotary shaft provided at a bottom thereof and rotates about the rotary shaft, a pulley attached to the rotary shaft and disposed at the outside of a water tank, and a motor for driving the drum via the pulley and a belt.
  • a plurality of fluid balancers divided in the radial direction is provided around the end of the washing tub in the axial direction.
  • a washing machine which includes a plurality of empty storage compartments and is configured to detect a state of balance in the laundry, and alongside to inject a fluid into the storage compartments at the opposite side of the detected unbalanced position of the laundry. Accordingly, the unbalance of the laundry is corrected, and the vibration of the washing tub during spinning is reduced.
  • the interval of partition plates circumferentially dividing an annular passage formed inside a balancer is set to be 30° or less, and the area of an outer peripheral side communication hole is made small.
  • a washing machine which includes an injection-type fluid balancer correcting an unbalanced state of laundry by injecting fluid thereinto, wherein the injection is performed by adjusting the rotation speed of a washing tub in accordance with the unbalanced amount of the laundry.
  • an opening/closing portion is provided at a passage in order to move a fluid inside a storage compartment of a fluid balancer of a washing tub.
  • the fluid may not move to the opposite side of the unbalanced position of the laundry at the resonance rotation speed of the washing tub when spinning is activated. That is, there is a problem in that the vibration of the washing tub during the spinning is not reduced.
  • the washing tub becomes balanced by using the fluid balancer on the basis of the relationship between the centrifugal force and its own weight and a variation in speed at the time of activating the spinning.
  • the fluid balancer since there is a non-linear factor such as friction when the rotation of the washing tub is continued, stability operation of the washing tub is difficult. That is, there is a problem in that the vibration of the washing tub is not reduced during the spinning.
  • the invention is made to solve the above-described problems, and provides a washing machine reducing a vibration of the washing tub during spinning by using a fluid balancer.
  • a washing machine of the invention includes: a washing tub for receiving laundry; a fluid balancer provided in the washing tub; a motor for rotationally driving the washing tub; a water tub having the washing tub provided therein; a vibration detection unit for detecting a vibration of the water tub; and a control unit.
  • the fluid balancer includes a plurality of storage compartments for storing a fluid injected from the outside thereof.
  • the control unit controls injection of the fluid into the storage compartments in accordance with an output of the vibration detection unit, and alongside decides a rotation speed of the motor when injecting the fluid is into the storage compartments in accordance with the rotation speed of the motor and the output of the vibration detection unit. Accordingly, it is possible to inject the fluid into the storage compartments of the fluid balancer in accordance with the vibration and the rotation speed, and to reduce the vibration caused by the unbalanced laundry.
  • Fig. 1 is a block diagram illustrating a washing machine of a first embodiment of the invention.
  • housing cover 17 of the washing machine includes an insertion opening 18 into or from which laundry is inserted or extracted and anti-vibration rubber 19 which serves as a leg portion when the washing machine is installed on a floor.
  • the interior of housing cover 17 is provided with mechanism 10 of the washing machine including water tub 13 where water enters, washing tub 11 disposed inside water tub 13 and accommodating laundry, and motor 12 disposed outside water tub 13 and rotating washing tub 11 while controlling the speed thereof.
  • Motor 12 is configured as a brushless motor.
  • Seal packing 14 is provided between the periphery of insertion opening 18 of housing cover 17 and the opening of water tub 13 so that any gap is not formed therebetween.
  • damper mechanism 16 is provided between water tub 13 and housing cover 17 to support them.
  • Damper mechanism 16 has both functions of a spring component and a damper component, and reduces the generation of a vibration when washing tub 11 rotates. Damper mechanism 16 and anti-vibration rubber 19 suppress the vibration of washing tub 11 from being transferred to the floor.
  • Fluid balancer 20 is provided in at least one of front and rear surfaces of washing tub 11.
  • Fluid balancer 20 is a donut-shaped container having a plurality of storage compartments 22.
  • the fluid is injected into storage compartments 22 in a manner such that it enters from injection opening 23 to storage compartments 22 via injection paths 24. Furthermore, the injection of the fluid into storage compartments 22 is performed by controlling valve 21.
  • the open/close control of valve 21 or the rotation control of motor 12 is performed by control unit 30.
  • the fluid injected into storage compartments 22 is, for example, water.
  • Speed detection unit 31 detects the speed of motor 12 from a hall IC (not shown) provided in motor 12.
  • Control driving unit 32 drives motor 12 on the basis of a difference between the rotation speed (rpm) detected by speed detection unit 31 and the target rotation speed from rotation speed instruction unit 60.
  • Vibration detection unit 41 is provided in water tub 13 and detects the vibration of water tub 13. That is, vibration detection unit 41 indirectly detects the vibration of washing tub 11.
  • Balance detection unit 40 detects by estimating the unbalanced position of the laundry and the unbalanced amount of the laundry on the basis of the vibration detection signal from vibration detection unit 41.
  • Valve control unit 50 controls the amount of water injected into storage compartments 22 of fluid balancer 20 by controlling the opening/closing operation of valve 21. Furthermore, valve control unit 50 controls the opening/closing operation of valve 21 on the basis of the unbalanced amount of the laundry estimated by balance detection unit 40.
  • vibration detection unit 41 is configured as, for example, a three-axis acceleration sensor. Furthermore, vibration detection unit 41 may estimate the vibration on the basis of the control current to motor 12 or the rotation speed (rpm) of motor 12 (r/min). Furthermore, rotation speed instruction unit 60 decides the target rotation speed of motor 12 in accordance with the output from balance detection unit 40 and the rotation speed obtained when vibration detection unit 41 detects the vibration.
  • Fig. 2 is a flowchart illustrating a spinning step of a drum type washing machine of the first embodiment.
  • the spinning is performed in a manner such that moisture contained in the laundry is separated by a centrifugal force.
  • the centrifugal force is generated by the rotation of washing tub 11 caused by the rotational driving of motor 12.
  • step S101 When the spinning step is started (step S101), motor 12 is driven at a constant rotation speed of 120 r/min by control driving unit 32 (step S102).
  • the rotation speed is equal to or less than the resonance rotation speed of the support mechanism system of support spring 15 or damper mechanism 16.
  • the unbalance of the laundry is estimated by balance detection unit 40 (step S103).
  • a vibration is generated in washing tub 11.
  • the vibration is detected by vibration detection unit 41.
  • Balance detection unit 40 estimates the unbalanced position and the unbalanced amount of the laundry on the basis of the vibration detection signal obtained from vibration detection unit 41.
  • step S104 balance detection unit 40 determined whether the unbalanced amount is a threshold value (for example, 600 g) or more. When the unbalanced amount is less than the threshold value (No in step S104), the current process proceeds to step S106, and control driving unit 32 increases the rotation speed of motor 12. On the other hand, when the unbalanced amount is a threshold value or more (Yes in step S104), valve control unit 50 opens valve 21 to inject a fluid into fluid balancer 20 (step S105). Specifically, the process is performed as bellow. Balance detection unit 40 estimates the unbalanced position of the laundry as well as the unbalanced degree of the laundry.
  • a threshold value for example, 600 g
  • the fluid is injected into storage compartments 22 at the opposite side of the unbalanced position of the laundry.
  • the injection is performed by synchronizing the opening/closing operation of valve 21 with the rotation of motor 12.
  • the fluid is injected in a manner synchronized with rotation at 120 r/min. Accordingly, the rotation of washing tub 11 becomes balanced.
  • control driving unit 32 increases the rotation speed of motor 12 (step S106).
  • step S107 balance detection unit 40 determines whether the resonance is detected.
  • the current process returns to step S105. That is, the fluid is injected into fluid balancer 20, and the rotation of washing tub 11 becomes balanced again.
  • step S108 motor 12 is driven at a constant rotation speed of 400 r/min by control driving unit 32 (step S108). Since the resonance rotation speed also becomes different in accordance with the water separating state of the laundry (that is, the spinning degree), even in step S110 and step S113 below, washing tub 11 becomes balanced again.
  • step S109 balance detection unit 40 determines whether the unbalanced amount increases.
  • motor 12 is driven at a constant rotation speed of 800 r/min by control driving unit 32 (step S111).
  • valve control unit 50 opens valve 21 and injects the fluid into fluid balancer 20 (step S110). The injection is performed by synchronizing the opening/closing operation of valve 21 with the rotation of motor 12. In this case, the fluid is injected in a manner synchronized with the rotation at 400 r/min. Accordingly, the rotation of washing tub 11 becomes balanced.
  • motor 12 is driven at a constant rotation speed of 800 r/min by control driving unit 32 (step S111).
  • step S112 balance detection unit 40 determines whether the unbalanced amount increases.
  • motor 12 is driven at a constant rotation speed of 1200 r/min by control driving unit 32 (step S114).
  • step S114 when the unbalanced amount increases (Yes in step S112), valve control unit 50 opens valve 21 and injects the fluid into fluid balancer 20 (step S113). The injection is performed by synchronizing the opening/closing operation of valve 21 with the rotation of motor 12. In this case, the fluid may be injected in a manner synchronized with the rotation at 800 r/min. Accordingly, the rotation of washing tub 11 becomes balanced.
  • step S114 When the rotation of washing tub 11 becomes balanced, motor 12 is driven at a constant rotation speed of 1200 r/min by control driving unit 32 (step S114). Furthermore, in steps S105, S110, and S113, the injection operations to fluid balancer 20 are performed when the rotation speed of motor 12 is 120 r/min, 400 r/min, and 800 r/min.
  • step S115 balance detection unit 40 determines whether the vibration is detected.
  • the final spinning rotation speed is decided as 1600 r/min. Accordingly, motor 12 is driven at a constant rotation speed of 1600 r/min by control driving unit 32 (step S116). Subsequently, motor 12 is decelerated and stopped (step S118).
  • the final spinning rotation speed is decided as 1200 r/min. Accordingly, motor 12 is driven while keeping the rotation speed of 1200 r/min without increasing the rotation speed (step S108). Subsequently, motor 12 is decelerated and stopped (step S118).
  • step S119 When motor 12 is stopped, water injected into storage compartments 22 is discharged from, for example, a discharge hole provided in storage compartments 22. That is, the fluid is discharged from the fluid balancer (step S119). In this manner, the spinning step ends (step S120). Furthermore, since the water injected into storage compartments 22 moves outward by a centrifugal force when washing tub 11 rotates at 120 r/min or more, the water is not discharged from the discharge hole.
  • the injection to fluid balancer 20 is performed three times in the spinning step.
  • the number of times of injecting the fluid into fluid balancer 20 may be small.
  • the number of times of injecting the fluid into fluid balancer 20 may be large.
  • the rotation speed upon injecting the fluid into fluid balancer 20 is 120 r/min.
  • the resonance rotation speed of the translation vibration mode of water tub 13 and the support mechanism is 140 r/min or less.
  • the rotation speed upon injecting the fluid into fluid balancer 20 is not limited to 120 r/min, and may be the resonance rotation speed or less.
  • the rotation speed upon injecting the fluid into fluid balancer 20 is 400 r/min.
  • the resonance rotation speed of the oscillation vibration mode of water tub 13 and the support mechanism is 300 r/min or more.
  • the rotation speed upon injecting the fluid into fluid balancer 20 is not limited to 400 r/min, and may be the resonance rotation speed or more.
  • the rotation speed upon injecting the fluid into fluid balancer 20 is 800 r/min, but may be the minimum rotation speed or more in the spinning step.
  • control unit 30 controls the opening/closing operation of valve 21 used for the injection to fluid balancer 20 by using valve control unit 50 on the basis of the rotation speed of motor 12 and the unbalanced amount detected by balance detection unit 40. That is, the fluid is appropriately injected into storage compartments 22 at the opposite side of the unbalanced position of the laundry in order to correct the unbalanced state of the laundry. Accordingly, the vibration at the critical rotation speed during the spinning and the rapid rotation may be corrected. Accordingly, in the spinning step, the vibration of washing tub 11 may be reduced.
  • Noise may be reduced with the reduction of the vibration of washing tub 11. Furthermore, since the vibration of washing tub 11 is reduced, the spinning rotation speed may be increased. Since the spinning rotation speed increases, the spinning time may be shortened.
  • Fig. 3 is a flowchart of a spinning step of a drum type washing machine of a second embodiment of the invention. Furthermore, the description will be made by giving the same reference numerals to the same steps as those of the first embodiment shown in Fig. 2 . As shown in Fig. 3 , the embodiment is different from the first embodiment in that the current process returns to step S102 when the resonance is detected in the resonance detection in step S177 (Yes in step S177).
  • the spinning step of the embodiment is the same as that of the first embodiment from step S101 to step S106.
  • the resonance is detected (Yes in step S177) when the rotation speed of motor 12 increases from 120 r/min (step S106)
  • the current process returns to step S102.
  • motor 12 is decelerated up to 120 r/min, and returns to the initial spinning state.
  • the fluid is injected into fluid balancer 20 again (step S105).
  • the resonance is not detected (No in step S177) when the rotation speed of motor 12 increases from 120 r/min (step S106)
  • the current process proceeds to step S108.
  • the following steps are the same as those of the first embodiment until the spinning step of step S120 ends.
  • step S177 is added, if the resonance is detected even when the rotation speed of motor 12 increases by means of rotation speed instruction unit 60, motor 12 is first decelerated and the fluid is injected into fluid balancer 20 again. That is, washing tub 11 may become balanced and the vibration of washing tub 11 may be reduced. Furthermore, noise may be reduced with the reduction of the vibration of washing tub 11. Furthermore, since the vibration of washing tub 11 is reduced, the spinning rotation speed may be increased. Since the spinning rotation speed increases, the spinning time may be shortened.
  • Fig. 4 is a flowchart illustrating a spinning step of a drum type washing machine of a third embodiment. Furthermore, the description will be made by giving the same reference numerals to the same steps as those of the first embodiment shown in Fig. 2 .
  • the embodiment is different from the first embodiment in that an increase in rotation speed is stopped and the rotation speed is controlled to be constant (step S173) if vibration detection unit 41 detects the vibration (step S171) and the unbalanced amount increases (Yes in step S172) even when the rotation speed increases (step S106).
  • the embodiment is different from the first embodiment in that an increase in rotation speed is stopped and the rotation speed is controlled to be constant (step S183) if the unbalanced amount increases (Yes in step S182) even when motor 12 rotates at 800 r/min (step S111).
  • the spinning step of the embodiment is the same as that of the first embodiment from step S101 to step S106.
  • step S106 when the rotation speed of motor 12 increases from 120 r/min (step S106), the vibration is continuously detected (step S171).
  • step S172 When the unbalanced amount increases (Yes in step S172), an increase in rotation speed is stopped and the rotation speed is controlled to be constant (step S173).
  • step S110 the fluid is injected into fluid balancer 20 (step S110), and the rotation speed of motor 12 is set to 800 r/min in a balanced state (step S111).
  • the rotation speed of motor 12 is set to 800 r/min (step S111).
  • step S183 when the unbalanced amount increases again (Yes in step S182), an increase in rotation speed is stopped and the rotation speed is controlled to be constant (step S183). Then, in the same manner as the first embodiment, the fluid is injected into fluid balancer 20 (step S113), and the rotation speed of motor 12 is set to 1200 r/min in a balanced state (step S114). On the other hand, when the unbalanced amount does not increase (No in step S182), the rotation speed of motor 12 is set to 1200 r/min (step S114). The following steps are the same as those of the first embodiment until the spinning step of step S120 ends.
  • steps S171, S172, and S173 are added, even when the rotation speed of motor 12 increases by rotation speed instruction unit 60, an increase in rotation speed is stopped and the fluid is injected into fluid balancer 20 again. That is, washing tub 11 may be become balanced and the vibration of washing tub 11 may be reduced. Furthermore, noise may be reduced with the reduction of the vibration of washing tub 11. Furthermore, since the vibration of washing tub 11 is reduced, the spinning rotation speed may be increased. Since the spinning rotation speed increases, the spinning time may be shortened.
  • Fig. 5 is a flowchart illustrating a spinning step of a drum type washing machine of a fourth embodiment of the invention. Furthermore, the description will be made by giving the same reference numerals to the same steps as those of the first embodiment shown in Fig. 2 and the third embodiment shown in Fig. 4 . As shown in Fig. 5 , the embodiment is different from the third embodiment in that the current process returns to step S102 if the rotation speed is a predetermined rotation speed or less (No in step S131) when the unbalanced amount increases in step S172 (Yes in step S172).
  • the spinning step of the embodiment is the same as that of the third embodiment from step S101 to step S172.
  • the unbalanced amount increases (Yes in step S172)
  • the rotation speed is the predetermined rotation speed or less (No in step S131)
  • the current process returns to step S102 so that the rotation speed returns to 120 r/min again.
  • the rotation speed is the predetermined rotation speed or more (Yes in step S131)
  • an increase in rotation speed is stopped and the rotation speed is controlled to be constant (step S132).
  • the fluid is injected into fluid balancer 20 (step S113), and the rotation speed of motor 12 is set to 1200 r/min in a balanced state (step S114).
  • the rotation speed of motor 12 is set to 1200 r/min (step S114).
  • the following steps are the same as those of the first embodiment until the spinning step of step S120 ends.
  • steps S131 and S132 are added, the fluid is injected into fluid balancer 20 again in accordance with the rotation speed when the unbalanced amount increases.
  • the current process proceeds to the initial spinning step again in accordance with the rotation speed. That is, washing tub 11 may become balanced and the vibration of washing tub 11 may be reduced. Furthermore, noise may be reduced with the reduction of the vibration of washing tub 11. Furthermore, since the vibration of washing tub 11 is reduced, the spinning rotation speed may be increased. Since the spinning rotation speed increases, the spinning time may be shortened.
  • Fig. 6 is a flowchart illustrating a spinning step of a drum type washing machine of a fifth embodiment of the invention. Furthermore, the description will be made by giving the same reference numerals to the same steps as those of the first embodiment shown in Fig. 2 and the fourth embodiment shown in Fig. 5 . As shown in Fig. 6 , the embodiment is different from the fourth embodiment in that the current process returns to step S102 if the elapsed time from the start of the spinning to the current rotation speed is less than a predetermined time (No in step S141) when the unbalanced amount increases in step S172 (Yes in step S172).
  • the spinning step of the embodiment is the same as that of the fourth embodiment from step S101 to step S172.
  • the elapsed time is less than the predetermined time (No in step S141)
  • the current process returns to step S102, and the rotation speed returns to 120 r/min again.
  • step S141 when the elapsed time is the predetermined time or more (that is, the predetermined time is elapsed) (Yes in step S141), an increase in rotation speed is stopped and the rotation speed is controlled to be constant (step S132). Then, the fluid is injected into fluid balancer 20 (step S113), and the rotation speed of motor 12 is set to 1200 r/min in a balanced state (step S114). Furthermore, when the unbalanced amount does not increase (No in step S172), the rotation speed of motor 12 is set to 1200 r/min (step S114). The following steps are the same as those of the first embodiment until the spinning step of step S120 ends.
  • step S141 when the unbalanced amount increases, the fluid is injected into fluid balancer 20 again with the elapsed time from the start of the spinning.
  • the current process proceeds to the initial spinning step again in accordance with the rotation speed. That is, washing tub 11 may become balanced and the vibration of washing tub 11 may be reduced. Furthermore, noise may be reduced with the reduction of the vibration of washing tub 11. Furthermore, since the vibration of washing tub 11 is reduced, the spinning rotation speed may be increased. Since the spinning rotation speed increases, the spinning time may be shortened.
  • Fig. 7 is a flowchart illustrating a spinning step of a drum type washing machine of a sixth embodiment of the invention. Furthermore, the description will be made by giving the same reference numerals to the same steps as those of the first embodiment shown in Fig. 2 . As shown in Fig. 7 , the embodiment is different from the first embodiment in that it is determined to return to the initial spinning step (step S102) or to proceed to a step of detangling the laundry (step S153) in accordance with the number of retries when the resonance is detected (Yes in step S187).
  • the spinning step of the embodiment is the same as that of the first embodiment from step S101 to step S106.
  • the resonance is detected (Yes in step S187) when the rotation speed of motor 12 increases from 120 r/min (step S106)
  • the number of retries is counted (step S151).
  • the current process returns to step S102, that is, the initial spinning step. Accordingly, the rotation speed of motor 12 is decelerated to 120 r/min, and the fluid is injected into fluid balancer 20 again (step S105).
  • step S152 when the number of retries is more than the predetermined number of times (No in step S152), it is determined that washing tub 11 is difficult to become balanced by using fluid balancer 20, and the current process proceeds to the laundry detangling step (step S153).
  • the laundry detangling step indicates a step, for example, water is supplied to washing tub 11 again and the laundry is floated to reduce the unbalanced amount of the laundry. Alternatively, the laundry may be detangled by performing a rinsing step. Furthermore, when the resonance is not detected (No in step S187), the current process proceeds to step S108.
  • the following steps are the same as those of the first embodiment.
  • washing tub 11 may become balanced again by detangling the laundry, and the vibration of washing tub 11 may be reduced. Furthermore, noise may be reduced with the reduction of the vibration of washing tub 11. Furthermore, since the vibration of washing tub 11 is reduced, the spinning rotation speed may be increased. Since the spinning rotation speed increases, the spinning time may be shortened.
  • Fig. 8 is a flowchart illustrating a spinning step of a drum type washing machine of a seventh embodiment of the invention. Furthermore, the description will be made by giving the same reference numerals to the same steps as those of the first embodiment shown in Fig. 2 . As shown in Fig. 8 , the embodiment is different from the first embodiment in that the rotation speed is controlled to be constant (step S152) and the current process returns to step S105 when the water supply is detected (Yes in step S151) while the rotation speed increases (step S106).
  • the spinning step of the embodiment is the same as that of the first embodiment from step S101 to step S106.
  • the rotation speed is controlled to be constant (step S152).
  • the current process returns step S105, and the fluid is injected into fluid balancer 20 again.
  • the water supply is performed, for example, when the laundry is detangled.
  • the water supply is performed when the rinsing is performed.
  • the current process proceeds to step S107.
  • the following steps are the same as those of the first embodiment.
  • steps S151 and S152 are added, the current process proceeds to the initial spinning step in accordance with the water supply state, that is, the change in the condition of the laundry inside washing tub 11. That is, washing tub 11 may become balanced and the vibration of washing tub 11 may be reduced. Furthermore, noise may be reduced with the reduction of the vibration of washing tub 11. Furthermore, since the vibration of washing tub 11 is reduced, the spinning rotation speed may be increased. Since the spinning rotation speed increases, the spinning time may be shortened.
  • the invention may reduce the vibration of the washing tub at the spinning step of the drum type washing machine, the invention may also be used in any washing machine except for the drum type.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP10750533.1A 2009-03-09 2010-03-08 Waschmaschine Withdrawn EP2385164A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009054558A JP2010207316A (ja) 2009-03-09 2009-03-09 洗濯機
PCT/JP2010/001582 WO2010103775A1 (ja) 2009-03-09 2010-03-08 洗濯機

Publications (2)

Publication Number Publication Date
EP2385164A1 true EP2385164A1 (de) 2011-11-09
EP2385164A4 EP2385164A4 (de) 2015-05-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10750533.1A Withdrawn EP2385164A4 (de) 2009-03-09 2010-03-08 Waschmaschine

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Country Link
EP (1) EP2385164A4 (de)
JP (1) JP2010207316A (de)
CN (1) CN102341539B (de)
WO (1) WO2010103775A1 (de)

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ITCS20120007A1 (it) * 2012-02-21 2013-08-22 Guido Danieli Terza variante al sistema di controllo delle vibrazioni durante la centrifugazione in una lavatrice domestica

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2990514A4 (de) * 2013-04-26 2016-05-04 Haier Group Corp Waschmaschine und steuerungsverfahren
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CN102341539A (zh) 2012-02-01

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