WO2017135602A1 - Machine à laver à tambour et son procédé de nettoyage de cuve - Google Patents

Machine à laver à tambour et son procédé de nettoyage de cuve Download PDF

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Publication number
WO2017135602A1
WO2017135602A1 PCT/KR2017/000704 KR2017000704W WO2017135602A1 WO 2017135602 A1 WO2017135602 A1 WO 2017135602A1 KR 2017000704 W KR2017000704 W KR 2017000704W WO 2017135602 A1 WO2017135602 A1 WO 2017135602A1
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WO
WIPO (PCT)
Prior art keywords
washing
drum
water
tub
rpm
Prior art date
Application number
PCT/KR2017/000704
Other languages
English (en)
Korean (ko)
Inventor
권선구
김영호
최가형
권호철
오영기
Original Assignee
엘지전자 주식회사
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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020187021052A priority Critical patent/KR102522794B1/ko
Priority to CN201780009350.6A priority patent/CN108603320B/zh
Priority to EP17747647.0A priority patent/EP3412822B9/fr
Priority to AU2017214013A priority patent/AU2017214013B2/en
Priority to US16/073,837 priority patent/US11326292B2/en
Publication of WO2017135602A1 publication Critical patent/WO2017135602A1/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
    • 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 
    • D06F33/43—Control of cleaning or disinfection of washing machine parts, e.g. of tubs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/02—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F21/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement 
    • 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—Unbalance; 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
    • D06F2105/02—Water supply
    • 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
    • D06F2105/08—Draining of washing liquids
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps

Definitions

  • the present invention relates to a washing machine, and more particularly, to a washing machine of a drum washing machine and a drum washing machine tub that can easily wash the tub.
  • the drum washing method is a method of washing the laundry using the frictional force of the rotating drum and the laundry and the drop impact of the laundry in a state in which detergent, washing water, and laundry are put in the drum, and the driving force of the motor is received. There is almost no laundry, and the laundry does not get tangled with each other and can give a pounding and scrubbing wash effect.
  • the washing machine of the pulsator type is provided with a dehydration tank in a storage tank in which wash water is stored, and washing is performed in a state in which laundry is immersed in the wash water supplied to the dehydration tank.
  • the washing of the pulsator type is performed by the friction between the wash water and the laundry and the action of the detergent by the rotation of the dehydration tank or the rotation of the pulsator provided in the lower portion of the dehydration tank to form a water flow. That is, in the washing machine of the pulsator type, since the rotating shaft of the dehydration tank is formed substantially perpendicular to the ground, the washing can be performed only when the washing water is supplied so that the laundry is immersed in the washing water.
  • washing water may be dispersed throughout the inner circumferential surface of the reservoir as well as the lower side of the reservoir and the dehydration tank rotates at high speed, so that contaminants or scales may accumulate on the entire inner circumference of the reservoir. And over time, contaminants or scales may decay and cause odor or contaminate laundry.
  • the cumulative part may be dried, there is a problem in that it is not easy to remove contaminants or scales.
  • the drum washing machine usually rotates the dehydration tank at high speed while removing the laundry from the dehydration tank, so that the supplied washing water is not used in a later step and is discharged, resulting in waste of water.
  • the detergent for washing the reservoir is generally not environmentally friendly because it has a lot of chemical components that cause water pollution in order to have a very strong cleaning power, unlike the detergent for washing in general.
  • the present invention is to solve the above problems, an object of the present invention is to provide a washing machine of the drum washing machine and the drum washing machine tub that can easily wash the tub while washing water circulates along the inner surface of the tub.
  • a control method of a washing machine comprising a washing stroke and a rinsing stroke, the control method comprising: a first water supply step of supplying washing water into a tub while a drum rotates at a water supply RPM; And after the first water supply step is completed, wherein the washing water circulates along the inner circumferential surface of the tub by the rotational force of the drum to form a circulating flow that falls from the top of both ends of the tub to form a first flow from the water supply RPM. It provides a control method of a washing machine comprising; a first washing step to rotate by the washing RPM.
  • the first water supply step is the drum decelerated by the water supply RPM with the end of the dehydration step It can continue to rotate to the feed water RPM.
  • the water supply RPM may be a minimum RPM that prevents laundry rotating along the drum from being separated from the inner circumferential surface of the drum by centrifugal force.
  • the wash water may be supplied into the tub up to a predetermined level, and the drain pump may be turned off.
  • the predetermined water level in the first water supply step may be a level at which the wash water supplied when the first washing step is performed can be checked from the outside.
  • the predetermined water level in the first water supply step may be equal to or greater than a height from the bottom of the tub to the bottom of the drum.
  • the drain pump may be turned off.
  • An eccentric amount of the drum may be sensed in at least one of the first water supply step and the first washing step.
  • the first water supply step may be restarted after draining the wash water remaining in the drum.
  • the rinsing stroke may be started while the drain pump is turned off to maintain the wash water remaining in the tub.
  • a second water supply step which is performed after the first washing step is completed and additional water supply for additionally supplying washing water into the tub is performed while the drum rotates at the water supply RPM; And after the second water supply step is completed, the drum is accelerated and rotated to a second washing RPM higher than the water supply RPM and lower than the first washing RPM so that the washing water having increased in quantity by the additional water supply forms the circulation flow.
  • a second washing step may be further included.
  • the second water supply step may continuously rotate the drum decelerated by the water supply RPM with the water supply RPM at the end of the first washing step.
  • Dehydration step is carried out at the washing administration, to accelerate the drum to dewatering RPM to remove the water of the laundry contained in the drum; And after the dehydration step, the supplied washing water transmits a constant braking force to the rotating drum by collision with the rotating drum, and the washing water collided with the drum hits at least one point of the inner circumferential surface of the tub to wash the washing.
  • Braking step for supplying the washing water toward the outer peripheral surface of the drum may further include.
  • the dehydration step may supply washing water toward the outer circumferential surface of the rotating drum.
  • the dehydration step includes a dehydration RPM maintenance step in which the drum rotates while maintaining the dehydration RPM, and the dehydration RPM maintenance step may supply washing water toward an outer circumferential surface of the rotating drum.
  • the drain pump may be turned off.
  • the washing water may be supplied through a plurality of washing water supply parts provided to strike a plurality of points on the inner circumferential surface of the tub.
  • the plurality of wash water supply units may be spaced apart along the longitudinal direction of the tub.
  • the first water supply step may be performed after the braking step, and may continuously rotate the drum decelerated by the water supply RPM in the braking step to the water supply RPM.
  • the drum washing machine of the present invention has the following effects.
  • First, according to the present invention provides an effect capable of washing the contaminants or scale accumulated in the entire inner peripheral surface of the tub and the outer peripheral surface of the drum.
  • Second, according to the present invention provides an effect that can be easily washed tub without having a separate tub cleaning device.
  • the inner surface of the tub and the outer surface of the drum provides the effect of cleaning the inner surface of the door and the gasket.
  • FIG. 1 is a cross-sectional view schematically showing the configuration of a drum washing machine according to an embodiment of the present invention.
  • FIG. 2 is an enlarged view illustrating part I of FIG. 1 to explain the flow of washing water.
  • FIG. 3 is an enlarged view illustrating part II of FIG. 1 to explain the level of washing water.
  • Figure 4 is a graph showing a washing method according to an embodiment of the present invention.
  • FIG. 5 is a graph showing a washing method according to another embodiment of the present invention.
  • Figure 6 is a graph showing a washing method according to another embodiment of the present invention.
  • FIG. 7 is a graph showing a washing method according to another embodiment of the present invention.
  • the first and second terms used in the present application may be used to describe various components, but the components should not be limited by the terms. The terms are used only to distinguish one component from another component.
  • FIG. 1 is a cross-sectional view schematically showing the configuration of a drum washing machine 1 according to an embodiment of the present invention.
  • the drum washing machine 1 is installed in the cabinet 10, the laundry inlet 11 is formed in the front, the laundry inlet 11 of the cabinet 10 to be opened and closed.
  • Door (11), tub (30) installed to store the wash water in the cabinet 10
  • the motor (50) installed in the tub 30 to generate a driving force
  • the rotary shaft 55 connected to the motor (50)
  • the drum 40 is connected to the rotary shaft 55 to wash the laundry by the driving force transmitted from the motor 50, and the washing water supplied to the tub 30 is rotated by the drum 40 by the rotational force of the drum 40.
  • the washing water level and the motor inside the tub 30 to wash the door 11 and the gasket 15 including the inner circumferential surface of the tub 30 while falling from the upper end of both ends of the tub 30 while circulating along the inner circumferential surface.
  • a controller 17 for controlling the rotational speed of 50.
  • washing water for washing and washing water for washing the gasket 15, the door 11, the tub 30, and the drum 40 are all called washing water.
  • the structure of the control unit 17 is provided in the control panel provided in the front of the cabinet 10, but is not necessarily limited thereto.
  • the cabinet 10 forms an exterior of the drum washing machine 1 and is provided with a laundry inlet 11 communicating the inside and the outside of the drum washing machine 1.
  • the cabinet 10 is rotatably provided at the front of the door 11 to selectively open and close the laundry inlet 11. Accordingly, the user can put the laundry into the drum 40 by opening and closing the door 11 or remove the laundry from the drum 40.
  • the door 11 is formed by the door inner surface 14 facing the drum 40 protrudes toward the drum 40. Accordingly, when the user pushes the door 11 to close the door 11, a part of the inner surface of the door 11 is located inside the drum 40, and the laundry is washed only in the drum 40, and the drum 40 rotates. When washing, it is not discharged to the outside of the drum 40.
  • the tub 30 is formed to accommodate the wash water while being provided in the cabinet 10.
  • Tub 30 is the wash water is supplied to the inside from an external water supply.
  • the tub 30 is formed in a substantially cylindrical shape and may be divided into a circumferential surface and both ends.
  • the front end portion of both ends of the tub 30 forms the front surface 33 of the tub and the rear end forms the rear surface 35 of the tub.
  • the front opening 33 of the tub is formed at a position corresponding to the laundry inlet 11 of the cabinet 10 so as to communicate the inside and outside of the drum 40.
  • the tub 30 is elastically supported by a spring 21 and a damper 23 whose circumferential surface is installed in the cabinet 10.
  • the tub 30 cannot be rotated by itself because the circumferential surface is directly supported by the spring 21 and the damper 23.
  • the tub 30 does not receive a separate rotational force from the motor 50, unlike the drum 40.
  • the upper side of the tub 30 is connected to a water supply device for supplying clean water that does not contain water or detergent included in the tub 30.
  • the water supply device includes a water supply valve 61 for intermittent clean water supplied through an external hose, a water supply hose 62 for guiding water passing through the water supply valve 61, and water supplied through the water supply hose 62 in advance.
  • One end is provided to guide the inside of the tub 30 with detergent supply device 63 formed to be mixed with the stored detergent, water containing detergent discharged from the detergent supply device 63 or clean water without detergent included therein.
  • It includes a water supply pipe connected to the outlet of the detergent supply device 63 and the other end is connected to the upper portion of the tub (30).
  • the water supply pipe may be formed of a single water supply pipe, but may be formed of a first water supply pipe 64 and a second water supply pipe 65 as shown in FIG. 1.
  • the first water supply pipe 64 and the second water supply pipe 65 are spaced apart at regular intervals in the longitudinal direction of the tub 30, and in particular, the place where the contamination is severe in the inner circumferential surface of the tub 30 or the outer circumferential surface of the drum 40. It may be disposed at a position corresponding to a portion where a lot of contaminants or scales are accumulated to be easily washed.
  • the first water supply pipe 64 and the second water supply pipe 65 may be formed of a bellows pipe to prevent vibration of the tub 30 from being transmitted to the detergent supply device 63.
  • the water supply pipe is described as being composed of a single water supply pipe or the first water supply pipe 64 and the second water supply pipe 65, but is not limited thereto.
  • the tub 30 or the drum 40 may vary according to a pattern in which the water is contaminated. An additional number of water pipes can be arranged.
  • a drainage device for draining water is connected to the lower side of the tub 30.
  • the drainage device is a drain pump 71 providing power for discharging the wash water contained in the tub 30, one end of which is connected to the lower side of the tub and the other end of which is connected to the drain pump 71, and the laundry contained in the tub 30.
  • the first drain pipe (73) for guiding the water to the drain pump (71) and one end is connected to the drain pump (71) and the other end is connected to the rear of the cabinet (10) to wash the water from the drain pump (71) to the cabinet (10).
  • the first drain pipe 73 may be formed of a bellows pipe so that vibration of the tub 30 is not transmitted to the drain pump 71.
  • a water level sensing device is provided in the space between the cabinet 10 and the tub 30.
  • the water level sensing device is connected to the side of the first drain pipe 73 made of a bellows pipe and is connected to the air chamber 81 and the air chamber 81 filled with a certain amount of air therein, and the air level filled inside to transfer pressure.
  • Sensing tube 83, the water level detection tube 83 is connected to the pressure sensor 85 for detecting the level of the wash water from the pressure transmitted through the air in the water level detection tube (83). Accordingly, when the water level in the tub 30 rises and the water pressure rises in the portion where the air chamber 81 is connected, the pressure sensor 85 detects the increased water pressure through the air chamber 81 and the water level sensing tube 83. To detect the water level.
  • the water level detection device is described as including a pressure sensor 85, but is not limited thereto.
  • the water level detecting device may be a device for measuring a quantity of water into which washing water is drawn instead of water pressure.
  • the tub 30 is the front surface 33 is spaced apart from the front of the cabinet 10 by a predetermined distance between the door 11 and the front opening of the tub 30, that is, the front of the cabinet 10 and the tub ( Washing water may flow between the front openings of 30).
  • Gasket 15 is provided between the front of the cabinet 10 and the front opening of the tub 30 in order to prevent the wash water from entering.
  • the tub 30 vibrates by the vibration of the motor 50.
  • the gasket 15 is made of a flexible material so that the vibration of the tub 30 is not transmitted to the cabinet 10 through the gasket 15.
  • the gasket 15 includes a door side portion 151 and a tub side portion 152.
  • the tub 30 side portion is concave, but is not limited thereto.
  • the tub side portion 152 shown to be formed concave in FIG. 1 is likely to accumulate detergent residues, contaminants or scales when the use period is long.
  • the drum 40 is formed to be loaded with laundry while being rotatably provided in the tub 30.
  • the drum 40 is formed in a substantially cylindrical shape and may be divided into circumferential surfaces and both ends, similarly to the tub 30.
  • the front end of both ends of the drum 40 forms the front surface 43 of the drum and the rear end forms the rear surface 45 of the drum.
  • the drum 40 is directly connected to the rotating shaft 55, the rear surface 15 is connected to the motor 50 receives a rotational force from the motor 50.
  • the drum 40 is provided with a lifter 49 on the inner circumferential surface of the drum 40 to lift and drop a part of the laundry or the wash water accommodated therein during rotation by the motor 50. Accordingly, when the drum 40 rotates by the motor 50, the lifter 49 rotates together with the drum 40 to lift and drop a part of the laundry or the wash water to one side.
  • the drum 40 has a plurality of through holes 47 formed in the side wall, that is, the window surface.
  • the drum 40 communicates with the tub 30 through the plurality of through holes 47. Accordingly, when the wash water is supplied to the tub 30 at a predetermined level or more, the drum 40 is immersed in the wash water and some wash water is introduced into the drum 40 through the through hole 47.
  • the controller 17 controls the rotational speed of the motor 50 and the water level of the washing water.
  • the controller 17 may be provided at, for example, an upper portion of the front surface of the cabinet 10, but is not limited thereto.
  • the controller 17 controls the motor 50 according to a previously input process so that the drum 40 rotates at a preset rotation speed.
  • the washing water inside the tub 30 is circulated along the inner circumferential surface of the tub 30 due to friction with the rotating drum 40, that is, the front and rear surfaces 33 of the tub 30. 35) Fall from the top. Accordingly, the gasket 15, the door inner surface 14, the tub 30 and the front and rear surfaces 43 and 45 of the tub 30 including the inner circumferential surface of the tub 30 and the outer circumferential surface of the drum 40 are washed.
  • the washing operation is performed.
  • FIG. 2 is an enlarged view illustrating part I of FIG. 1 to explain the flow of washing water.
  • the washing water is the first flow 91 circulating the tub 30 circumferential spaced portion by the rotational force of the drum 40, upper portions of both ends of the tub 30, that is, the front surface and the rear of the tub.
  • the second flow 92 falling from the upper side 33, 35 through the tub front gap 36, from the lower ends of both ends of the tub 30, that is, from the lower sides of the tub front and rear surfaces 33, 35.
  • the first flow 91 circulates and washes the inner circumferential surface of the tub 30 and the outer circumferential surface of the drum 40, and a portion of the first flow 91 joins the second flow 92 from the top of the tub front and rear surfaces 33 and 35.
  • the falling flow pattern is shown.
  • the second flow 92 represents a flow pattern that circulates while being lifted to the top of the front face 33 or the rear face of the tub, and then falls again.
  • the second flow 92 cleans the door inner surface 14, the front and rear surfaces of the tub 30 and the drum 40, and the gasket 15.
  • the third flow 93 is a flow pattern generated by being pushed to both ends of the tub 30 after being in close contact with the inner circumferential surface of the tub 30 by the centrifugal force generated while the washing water rotates.
  • the third flow 93 may wash the gasket 15 and the bottom of the door inner surface 14.
  • the controller 17 controls the washing water inside the tub 30 to be supplied into the tub 30 up to a predetermined level.
  • FIG. 3 is an enlarged view illustrating part II of FIG. 1 to explain the level of washing water.
  • the controller 17 controls that the preset washing water level 95 is at least the minimum water level 97, which is a height from the lower end of the tub 30 to the lower end of the drum 40. This is because at least a portion of the drum 40 must be able to contact the wash water so that the wash water can flow by friction with the drum 40.
  • control unit 17 may control a predetermined level higher so that the user can directly check the flow of the wash water by the washing operation through the door (11).
  • the controller 17 may control the preset water level to the extent that the user can visually check whether the tub 30 is cleaned when the user views the inside of the drum 40 through the door 11.
  • the preset water level does not have a maximum limit. In general, however, the controller 17 controls the preset water level smaller than the full water level 96.
  • the full water level 96 refers to a level where the tub 30 and the drum 40 may be washed with water and overflow into the gasket 15.
  • the preset water level of the wash water is not a drum washing machine 1 in which the rotating shaft 55 shown in FIGS. 1 to 3 is formed horizontally with respect to the ground, but a tilting type in which the rotating shaft 55 is inclined with respect to the ground at an angle.
  • the front portion of the drum 40 is positioned higher relative to the ground than the rear portion, the height at which the front and rear portions of the drum 40 are locked at each level will vary.
  • the input unit 19 for inputting the operation to wash the inner peripheral surface of the tub 30 may be provided separately at the point where the control unit 17 is located.
  • the general drum washing machine 1 is provided with a rotary knob or buttons on the control panel to input the operation of the drum washing machine 1. Therefore, the rotary knob may be provided with an input unit 19 for washing the tub 30 separately or may be provided with a separate button.
  • the tub 30 may be configured to be cleaned. Thus, the operation of cleaning the inner circumferential surface of the tub 30 may be performed as a default, but may also be performed as an option.
  • the tub washing method is included in the control method of the drum washing machine 1, and generally, the control method of the drum washing machine 1 includes a washing stroke, a rinsing stroke, and a dehydration stroke.
  • the tub washing method narrowly includes a tub washing step according to various embodiments together with a course recognition step and a braking step (E).
  • the tub washing method includes a first dehydration step (S200), a second dehydration step (S500), and a third dehydration step. Further, at least one step (S700).
  • the washing operation that is, the washing of the door inner surface 14 and the gasket 15 including the tub 30 and the drum 40 as described above is narrowed according to the user's course selection recognized in the course recognition step.
  • the washing water level and the rotation of the drum 40 in relation to at least one of the first to third dehydrating steps (S200, S500, S700) are wide. It means that the operation is controlled to perform most efficiently.
  • the first to third dehydration steps (S200, S500, S700) are not fixed to a specific stroke of the washing stroke, the rinsing stroke, and the dehydrating stroke, and the efficient execution of the braking step (E) and the wash washing step according to various embodiments. Can belong to any administration.
  • the first dehydration step (S200) may correspond to the washing dehydration of the washing stroke, but may also correspond to the rinsing dehydration of the rinsing stroke.
  • the second dehydration step S500 may correspond to rinsing dehydration of the rinsing stroke, but may also correspond to simple dehydration or intermediate dehydration of the dehydrating stroke.
  • the third dehydration step (S700) may correspond to the main dehydration of the dehydration administration, but is not limited thereto.
  • FIG. Figure 4 is a graph showing a washing method according to an embodiment of the present invention.
  • the tub washing method of the drum washing machine 1 includes a first dehydration step (S200), a braking step (E), and a tub washing step (A).
  • the first dehydration step (S200) is a step of removing water from the laundry contained in the drum 40, the drum 40 is the highest RPM in the first dehydration step (S200), that is, dehydration RPM (RPM D1) Rotating while maintaining the dewatering RPM management step (S210).
  • the first dehydration step (S200) is performed while the drain pump 71 is turned on to discharge the wash water containing the detergent and laundry contaminants in the tub 30.
  • the laundry contained in the drum 40 is removed from the wash water including the detergent while being in close contact with the inner circumferential surface of the drum 40, as well as the detergent and the laundry inside the tub 30. Significant amounts of contaminants are removed. Accordingly, in the tub washing step (A) performed after the first dehydration step (S200), the washing operation may be performed in a state in which the washing water supplied into the tub 30 is relatively contaminated by detergents and contaminants remaining in the tub 30. Can be.
  • the braking step (E) is performed after the first dehydration step (S200), wherein the rotational speed of the drum 40 is decelerated from the dehydration RPM (RPM D1) to the first RPM. That is, even when the braking step (E) is performed, the drum 40 does not stop and rotates by decelerating to the first RPM, which is lower than the dehydration RPM (RPM D1).
  • the through washing step A is performed after the braking step E and includes a first rotating step A1, a second rotating step A2, and a deceleration step A3.
  • the first rotating step A1 washing water is supplied into the tub 30 from the outside, and the drum 40 rotates at least the first RPM.
  • the drain pump 71 is controlled to maintain the off state, and this off state is maintained until a certain point of the rinsing step. Therefore, the wash water supplied in the first rotation step A1 is not continuously discharged from the tub 30 during the second rotation step A2 and may be used as the rinsing water in the subsequent rinsing step. Even if water is supplied for the water washing step (A), no additional water is required in the rinsing step as much as the water is supplied.
  • the rotation is started at the first RPM after the drum 40 passes the braking step E, which is decelerated to the first RPM with the end of the first dehydration step S200. Therefore, the rotation of the drum 40 does not stop during the first rotation step A1 from the braking step E.
  • the first RPM may be defined as a minimum RPM that prevents laundry rotating along the drum 40 from being separated from the inner circumferential surface of the drum 40 by centrifugal force. That is, it is RPM which the centrifugal force of 1G or more generate
  • the first RPM which is a rotational speed for washing the laundry to be in close contact with the inner circumferential surface of the drum 40, may be approximately 60 to 80 RPM, but considering the second rotation step A2 performed thereafter, the drum 40 may be rotated at 108 RPM. Can be rotated.
  • the first RPM when the first RPM is too high, an error may occur in the pressure sensor 85 for measuring the water level. That is, when the drum 40 rotates at a high rotation speed, the washing water level of one side of the drum 40 rises while the washing water level of the other side drops.
  • the first drain pipe 73 When the first drain pipe 73 is connected to the side where the water level of the washing water rises, the water pressure applied to the first drain pipe 73 rises with the rise of the water level.
  • the pressure sensor 85 since a force is applied to the air chamber 81 connected to the side of the first drain pipe 73, the pressure sensor 85 may detect that the pressure sensor 85 is higher than the actual water level. Therefore, the first RPM needs to be set to an RPM at which a pressure rise occurs due to rotation of the drum 40 within a preset range so that a water level detection error by the pressure sensor 85 is prevented.
  • the laundry contained in the drum 40 the water content is different for each type. Therefore, when the first dehydration step (s200) of removing the water of the laundry is performed, the distribution of water included in the laundry accommodated in the drum 40 is changed, so that the amount of eccentricity of the drum 40 may be changed.
  • the laundry contained in the drum 40 during the first rotation step A1 is not moved while being in close contact with the inner circumferential surface of the drum 40, but due to the water supply of the wash water, The distribution may change in part.
  • the eccentricity detection may be performed before the second rotation step A2 in which the drum 40 rotates at the second RPM, which is a higher rotation speed than the first RPM, in the first rotation step A1. This eccentricity detection may also be performed in the second rotation step A2.
  • the eccentricity refers to a phenomenon in which the cloth is biased to one side due to laundry, that is, entanglement of the cloth inside the drum, and one side becomes heavy with respect to the center of the drum, and the amount of eccentricity refers to the quantification of such an eccentricity. If the drum inside the drum is eccentric and the drum rotates at high speed, for example, during dehydration, vibration and noise may occur due to unbalance where the geometric center and the actual center of gravity of the drum's rotation axis itself do not match. Can be.
  • the second rotation step A2 is performed.
  • the detected eccentricity exceeds the reference eccentricity, for example, after the drain pump 71 is switched from off to on, it remains in the tub 30. You can drain the wash water.
  • the first rotation step A1 is restarted to detect the amount of eccentricity. This operation is repeatedly performed until the detected eccentricity is less than or equal to the reference eccentricity. However, if excessive repetition is caused, waste of energy such as loss of power is caused. Can be.
  • the rinsing step (S300) may be performed immediately while maintaining the water remaining therein without draining the tub. The drain pump is kept off to prevent the wash water from draining.
  • the first rotating step A1 supplies washing water to the tub 30 in a predetermined level.
  • the first rotation step A1 supplies the washing water such that the predetermined washing water level is at least the minimum water level 97, which is at least the height from the lower end of the tub 30 to the lower end of the drum 40.
  • the first rotation step (A1) can supply the wash water to the extent that the user can visually check whether the tub 30 is washed when the user looks inside the drum 40 through the door (11).
  • the water level set in advance is equal to or lower than the water level, that is, the tub 30 and the drum 40 can be washed with the washing water and overflow into the gasket 15.
  • the second rotating step A2 is performed after the first rotating step A1 is finished, and the drum 40 is accelerated and rotated from the first RPM to the second RPM. Washing water is not supplied to the tub 30, the drain pump 71 maintains the off state to prevent the discharge of the wash water.
  • the wash water supplied to the inside of the tub 30 above the predetermined level is a flow pattern including first to third flows 91, 92, and 93. Circulate according to. Washing water circulating according to the flow pattern can be defined as a circulating flow.
  • the inner circumferential surface of the tub 30, the outer circumferential surface of the drum 40, the gasket 15, the door inner surface 14, and the like are washed by the circulation flow of the flow pattern.
  • the rinsing step (S300) is measured after the water level is additional water supply for additionally supplying the wash water if the measured water level is less than the preset rinsing water level.
  • the rinsing step (S300) is performed without additional water supply if the measured water level is more than the predetermined rinsing water level.
  • the water level measurement for additional water supply may be performed after stopping the drum not to rotate or while the drum is rotated to the minimum RPM where the error of the pressure sensor 85 does not occur.
  • the additional water supply is performed to be supplied by the remaining amount except the amount of the wash water supplied in the first rotation step (A1). Therefore, even if the wash water is supplied in the first rotation step (A1), since the water is additionally added except for the amount of the wash water supplied in the rinsing step (S300), it can not be said that the wash water is required more due to the tub washing step (A).
  • the second dehydration step S500 is performed after the rinsing step S300 ends.
  • the second dehydration step (S500) includes an inflating step (S510), RPM maintenance step (S530) and acceleration step (S550).
  • Inflating step (S510) is a step that is accelerated until the drum 40 rotates by centrifugal force of 1G size. Therefore, in the foaming step (S510), since the laundry contained in the drum flows away from the inner circumferential surface of the drum 40 when the drum 40 rotates, the laundry, that is, the cloth may be dispersed and rearranged in the drum 40. .
  • RPM maintenance step (S530) is a step in which the drum rotates at a single rotational speed.
  • the drum may be rotated so that the laundry contained therein has a centrifugal force of about 1 G, and although not shown in the drawings, ball balancing may be made.
  • the acceleration step (S550) is the drum 40 is accelerated to the second dewatering RPM, water is removed from the laundry.
  • the third dehydration step (S700) is performed after the second dehydration step (S500) desing, and includes an RPM maintenance step (S710) and an acceleration step (S730) similarly to the second dehydration step (S500).
  • the tub washing method of the drum washing machine 1 may further include a course recognition step of recognizing at least one course selected by the user among a plurality of courses including the tub washing course. have.
  • various washing courses for performing washing may be selected.
  • the user may allow a to wash course, that is, a to wash step A, to be performed as a default or option through the input unit 19 provided at the point where the controller 17 is located.
  • the wash washing step A is performed as described above, that is, the default.
  • the tub washing course is recognized in the course recognition step, for example, the tub washing step A
  • the first rotation step (A1) and the second rotation step (A2) included in the control is controlled to be performed immediately before the last rinsing step (S300) of the plurality of rinsing step (S300). Since the user selects and performs the washing step (A) as an option, since it is expected to have a high effect by performing the washing step (A), the tub 30 may be used to perform at least one rinsing step (S300). It is preferable to control so that the water washing step (A) is performed after the contaminants are removed.
  • washing step (A) is performed alone without performing another stroke.
  • the washing step (A) may be performed without a series of washing processes consisting of washing stroke, rinsing stroke and dehydration stroke.
  • FIG. 5 is a graph showing a tub washing method according to another embodiment of the present invention.
  • Tub washing method of the drum washing machine 1 according to another embodiment of the present invention will be omitted the overlap with the tub washing method according to an embodiment of the present invention described above.
  • the tub washing method of the drum washing machine 1 maintains a state in which the drain pump 71 is turned off, but includes a first water supply step B1 and a first washing step B2.
  • a washing step B consisting of a first deceleration step B3, a second water supply step B4, a second washing step B5, and a second deceleration step B6.
  • the drum 40 In order to maximize the cleaning force for the tub 30, it is preferable to rotate the drum 40 at a high rotational speed to wash the tub 30 with a faster water.
  • problems such as a lack of torque of the motor 50, foaming and backflow may occur.
  • the drum 40 is rotated at a high speed so that the wash water circulates along the inner circumferential surface of the tub 30 at a high speed.
  • the washing water rotating at a low speed is clean compared to the washing water rotating at a high speed by additional water supply.
  • the pollutants accumulated in the tub 30 and the like are separated by the fast-circulating washing water. Afterwards, the pollutant concentration of the wash water is lowered by dissolving the pollutants separated into a slow but relatively large amount of wash water. Since the pollutant concentration is not attached to the tub 30 again due to the washing water of the pollutant concentration is lowered, the washing power is maximized.
  • the tub washing method of the drum washing machine 1 is performed by dividing the washing water supply step into two steps and the washing step is also divided into two steps.
  • the drum 40 rotates with a water supply RPM of the first RPM.
  • the first washing step B2 is performed after the first water supply step B1 is finished and the drum 40 rotates to the first washing RPM, which is a third RPM higher than the above-described second RPM.
  • the third RPM may be, for example, 300 RPM, but is not limited thereto, and may be variously set according to ambient conditions. Since the first washing step B2 rotates a small amount of washing water at high speed, the amount of impulse when the washing water collides with the pollutants such as the tub 30 is very large. Therefore, relatively many pollutants can be separated from the tub 30 and the like.
  • a deceleration step in which the drum 40 is accelerated from the first washing RPM to the water supply RPM is performed.
  • the drum 40 does not stop, and thus proceeds quickly. Since the drum 40 does not need to be rotated again in a stopped state, energy such as power may be saved.
  • the washing water is supplied to a predetermined water level, and the drum 40 rotates at the first RPM of the water supply RPM.
  • the rotation speed of the drum 40 is equal to the rotation speed of the drum 40 in the first water supply step B1.
  • the preset water level in the second water supply step B4 may be set to be the same as the preset water level in the above-described embodiment. Therefore, the preset water level in the first water supply step B1 should be lower than the preset water level in the above-described embodiment.
  • the second washing step B5 may be performed after the second water supply step B4 is finished and the drum 40 rotates to the second washing RPM which is the second RPM. As described above, in the second washing step B5, more contaminants may be dissolved or included in the turbid water than in the case of the second rotating step A2 of the exemplary embodiment.
  • a tub washing method of the drum washing machine 1 according to another embodiment of the present invention will be described in detail.
  • the tub washing method of the drum washing machine 1 according to the present embodiment can be described with reference to FIGS. 4 and 5 mentioned above.
  • a through washing step including a first dehydration step (S200) and a braking step (E) is shown, respectively.
  • the first dehydration step (S200) is referred to as the dehydration step (S200) for convenience and the first dehydration RPM (RPM D1) is referred to as the dehydration RPM (RPM D1).
  • the tub washing method according to the present embodiment is performed by colliding the washing water toward the drum 40 rotating with a dehydration RPM (RPM D1) that is much higher than the first RPM and the second RPM. That is, the washing water collided with the drum 40 rotating at a high speed is dispersed at a high speed to hit the inner circumferential surface of the tub 30 to separate the contaminants accumulated on the inner circumferential surface of the tub 30. In this step, the wash water does not form a circulation flow.
  • RPM D1 dehydration dehydration RPM
  • the dehydration step (S200) rotates the drum 40 at a high speed, and then the braking step (E) performs the deceleration.
  • the drum is collided by the washing water and the drum 40.
  • the 40 can be decelerated more easily to reduce the energy required to decelerate the drum 40.
  • the tub washing method according to the present embodiment uses a kinetic energy of the drum 40 rotating with a high speed dewatering RPM (RPM D1) to wash the tub 30 and the like and at the same time decelerate the drum 40. It is about.
  • RPM D1 high speed dewatering RPM
  • the tub washing method is a dehydration step (S200) of rotating the drum 40 by dehydration RPM (RPM D1), a braking step (E) of decelerating the drum 40, and a washing water supply step ( A1) and washing step (A2).
  • the drum 40 is rotated by a high speed dewatering RPM (RPM D1) to remove moisture of the laundry contained in the drum 40.
  • Dehydration step (S200) may be reduced at the moment the rotational speed of the drum 40 reaches the dehydration RPM (RPM D1), but dehydration RPM maintenance step (S210) to maintain the drum 40 dehydration RPM (RPM D1) It may include.
  • the dehydration step (S200) ends with the dehydration RPM maintenance step (S210).
  • the braking step (E) imparts a braking force to the drum 40 by impinging the washing water on the drum 40 rotating at high speed with the dehydration RPM (RPM D1).
  • the braking step (E) is not limited to the time after the start of the dehydration step (S200). Detailed description thereof will be described later.
  • the braking step (E) includes a section in which the drum 40 is rotated to the dewatering RPM (RPM D1) and then rapidly decelerated to the first RPM water supply RPM.
  • RPM D1 dewatering RPM
  • the washing water collides with the drum 40 rotating at a high speed, thereby reducing the rotation speed of the drum 40, thereby saving energy.
  • drum 40 which rotates at high speed, may slow down as the washing water collides with the drum 40, if the motor 50 continues to apply rotational force to the drum 40, the drum 40 must necessarily It may not slow down. Detailed description thereof will be described later.
  • the braking step (E) is not only the drum 40 is decelerated by the collision with the washing water but also the washing water collided with the drum 40 that rotates at a high speed is dispersed at a high speed toward the inner peripheral surface of the tub 30 The inner circumferential surface of the tub 30 is hit and washed. At this time, the speed at which the washing water strikes toward the inner circumferential surface of the tub 30 is the highest when the drum 40 rotates to the dehydration RPM (RPM D1), and gradually decreases as the drum 40 is decelerated to the first RPM.
  • RPM dehydration RPM
  • the braking step E may be supplied to different positions of the tub 30 by a plurality of water supply means so that the washing water may strike different positions of the inner circumferential surface of the tub 30 and the outer circumferential surface of the drum 40.
  • the braking step E may be supplied with washing water through the first drain pipe 73 and the second drain pipe 75 spaced at regular intervals along the longitudinal direction of the tub 30 as shown in FIG. 1.
  • Can be. Accordingly, the wash water supplied through the first drain pipe 73 may be washed by hitting the front part of the tub 30 after colliding with the front part of the drum 40, and the washing water supplied through the second drain pipe 75. The water may be washed by hitting the rear portion of the tub 30 after colliding with the rear portion of the drum 40.
  • the first drain pipe 73 and the second drain pipe 75 are not limited to the above-described position, and the washing water strikes a portion where the contaminants are concentrated and accumulated on the inner circumferential surface of the tub 30 and the outer circumferential surface of the drum 40.
  • the position can be adjusted respectively to make it so.
  • the braking step E may be controlled to be started during the dehydration RPM maintenance step S210 of the dehydration step S200. .
  • the drum 40 is rotated while maintaining the dehydration RPM (RPM D1) by receiving additional rotational force from the motor 50.
  • the braking step E is controlled to be performed even in a section in which the dehydration RPM maintenance step S210 is performed.
  • the braking step (E) is dewatering to sufficiently remove the contaminants accumulated in the tub 30 by maintaining the fastest speed at which the washing water collided with the drum 40 hits the inner circumferential surface of the tub 30 for a predetermined time. Time overlapping with the RPM maintenance step (S210) can be adjusted.
  • the drain pump 71 maintains the on state, but in the braking step (E), the drain pump 71 maintains the off state.
  • the braking step (E) is started in the dehydration RPM maintenance step (S210)
  • the drain pump 71 maintains the off state in a section where the braking step (E) and the dehydration RPM maintenance step (S210) overlap. Therefore, the wash water supplied in the braking step (E) remains in the tub 30 until the rinsing step (S300) is performed through the washing water supply step (A1) and the washing step (A2).
  • Washing water supply step (A1) is the same except for the first rotation step (A1) and other differences described later.
  • the difference from the first rotation step A1 is that the amount of water excluding the amount of wash water remaining since the wash water supplied in the braking step E when the water is supplied in the first rotation step A1 remains in the tub 30. Even if the wash water is supplied, the wash water level may reach a predetermined level.
  • the washing step (A2) is the same as the second rotating step (A2).
  • the tub washing method according to the present embodiment including the dehydration step (S200) and the braking step (E) may include an additional washing water supply step and an additional washing step performed after the washing step A2 is finished.
  • the additional washing water supply step and the additional washing step are the same as the above-described second water supply step B4 and the second washing step B5, respectively, and thus description thereof is omitted.
  • FIGS. 6 and 7 are graphs showing a washing method according to another embodiment of the present invention.
  • the first rotating step (C1, D1), the second rotating step (C2, D2) and washing and draining step (C3, D3) comprises a washing step (C, D) consisting of.
  • a step (S551) and a braking step (E ') in which the second dewatering RPM (RPM D2) is maintained may be performed before the first rotation step (C1).
  • the step (S551) of maintaining the second dewatering RPM (RPM D2) is performed on the same principle as the above-described dehydration RPM holding step (S210), and the braking step (E ') is the same as the braking step (E) of the above-described example. Since it is carried out in principle, a detailed description of each will be omitted.
  • the first rotation steps (C1, D1) may be different from the reference eccentricity when detecting the eccentric amount of the drum 40 according to the step performed after the washing and draining step, and that the step performed immediately before may not be a dehydration step. In this respect it is distinguished from the case according to the previous embodiment of the present invention. Detailed description thereof will be described later.
  • the second rotation step (C2, D2) is distinguished from the case according to the previous embodiment of the present invention in that the washing and draining steps (C3, D3) are included.
  • the washing and draining steps C3 and D3 the wash water supplied in the first rotating steps C1 and D1 is discharged while the drain pump 71 is kept on.
  • This washing and draining step (C3, D3) is started during the second rotating step (C2, D2) and can be terminated with the second rotating step (C2, D2), but is not limited to this and overlaps with the step to be performed later Can be. Detailed description thereof will be described later.
  • a third dehydration step S700 may be performed after the washing and draining step C3 is completed.
  • the third dehydration step (S700) may correspond to the main dehydration of the dehydration stroke in which the drum 40 rotates at a very high speed, and the drum 40 rotates at the highest speed among the control methods of the drum washing machine 1, but it must be It is not limited to this.
  • the third dehydration step (S700) may not perform a separate eccentric amount detection or ball balancing step, the eccentric amount of the drum 40 can be detected only in the first rotation step (C1).
  • the sensed eccentricity is allowed to perform the third dehydration step (S700) in which the drum 40 rotates at a much higher RPM than the second RPM in the second rotation step (C2) via the second rotation step (C2).
  • the reference eccentricity amount in this embodiment is much smaller than the reference eccentricity amount enough to perform the above-mentioned second rotation step C2.
  • this is only an example, and does not exclude the detection of the amount of eccentricity in the second rotation step C2.
  • the eccentricity measured in the above-described first rotation step A1 and the second rotation step A2 exceeds the reference eccentric amount, the eccentricity measured in the above-described first rotation step A1 and the second rotation step A2 It is the same except that it is above the standard eccentricity and performs dehydration administration.
  • washing and draining step (C3) may be terminated with the second rotating step (C2) to discharge the wash water already used before the start of the third dehydration step (S700) as described above, but is not limited thereto. May be terminated.
  • the tub washing method according to the present embodiment may sequentially perform the second dehydration step S500 and the third dewatering step S700 after the washing and draining step D3 is completed.
  • the drum 40 rotates at a lower RPM than the highest RPM of the third dehydration step (S700), and among the control methods of the drum washing machine 1, the intermediate dehydration or the dehydration stroke is simple. It may correspond to dehydration, but is not limited thereto.
  • the eccentricity of the drum 40 is detected, and if the detected eccentricity is less than or equal to the reference eccentricity, the second rotation step D2 is performed.
  • the reference eccentricity may be set only to perform the second rotation step D2.
  • RPM D2 second dewatering RPM
  • the present invention is not limited thereto, and the reference eccentricity may be set to perform the second dehydration step S500 through the second rotation step D2. At this time, the reference eccentricity is set smaller than the case for performing the second rotation step (D2).
  • the second rotation step D2 is performed after the end of the first rotation step D1, and the drain pump 71 is maintained in the off state.
  • the eccentric amount is detected only in the first rotation step (D1), but is not limited to this may also be detected in the second rotation step (C2).
  • the amount of eccentricity measured in each of the first rotation step D1 and the second rotation step D2 exceeds the reference eccentric amount, the eccentricity measured in the first rotation step A1 and the second rotation step A2 described above It is the same except that the amount of eccentricity or more is carried out in the dehydration step (S700).
  • the washing and draining step (D3) is started during the second rotating step (D2), and the drain pump (71) is kept on to discharge the washing water in the tub (30).
  • the second dewatering to rotate the drum 40 to a second dewatering RPM (RPM D2) higher than the second RPM
  • the drum 40 may vibrate violently when the step S500 is performed.
  • the vibration of the drum coincides with the natural frequency or the natural frequency of the washing machine, so that a natural vibration mode in which the amplitude of the washing machine increases theoretically infinitely occurs. Can be.
  • the drum 40 is a source of vibration and the tub 30 receives vibration of the drum 40 as a vibration transmission medium and transmits the vibration to the cabinet 10, so that the entire drum washing machine 1 vibrates and makes noise during washing. There is a problem that occurs badly.
  • the washing water level inside the tub 30 is lowered below the lower end of the drum 40 by adjusting the drainage amount made in the washing and draining step (D3), but may be controlled to remain at least in the tub 30.
  • the tub 30 maintains a state in which the wash water is accommodated, thereby improving vibration characteristics.
  • the amount of wash water remaining in the tub 30 is adjusted to allow the natural vibration mode to be alleviated as much as possible in the second dehydration step (S500).
  • the washing and draining step (D3) is adjusted in addition to the amount of drainage end point. That is, the washing and draining step (D3) is controlled so that the washing water does not remain in the tub 30 at the end point, but the second dehydration so that the washing water remains in the tub 30 during the acceleration step of the second dehydration step (S500). It may be completed at the same time as the completion of step (S500). However, if the drum 40 is able to improve the noise caused by the vibration in a particular section vibrating severely, the end point of the washing and draining step D3 is not limited thereto, but is set to various points of time.
  • the third dehydration step S700 is performed after the second dehydration step S500 and includes a ball balancing step and an acceleration step. Therefore, the reference eccentricity in the first rotation step D1 is not necessarily set to perform the third dehydration step S700.

Abstract

La présente invention concerne une machine à laver et, plus particulièrement, une machine à laver à tambour permettant de nettoyer facilement une cuve, et un procédé de nettoyage de la cuve de la machine à laver à tambour. À cet effet, la présente invention, par rapport à un procédé de commande d'une machine à laver comprenant des cycles de lavage et de rinçage, concerne un procédé pour commander la machine à laver comprenant : une première étape d'alimentation en eau pour fournir de l'eau de lavage à l'intérieur d'une cuve tandis qu'un tambour tourne à un régime d'alimentation en eau ; et une première étape de lavage, exécutée après l'achèvement de la première étape d'alimentation en eau, pour accélérer la rotation du tambour à partir du régime d'alimentation en eau au régime de premier lavage de telle sorte qu'un écoulement circulatoire est créé, dans lequel l'eau de lavage tombe depuis la partie supérieure des deux extrémités de la cuve tout en circulant le long de la surface périphérique interne de la cuve en raison de la puissance de rotation du tambour.
PCT/KR2017/000704 2016-02-01 2017-01-20 Machine à laver à tambour et son procédé de nettoyage de cuve WO2017135602A1 (fr)

Priority Applications (5)

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KR1020187021052A KR102522794B1 (ko) 2016-02-01 2017-01-20 드럼 세탁기 및 드럼 세탁기의 터브 세척 방법
CN201780009350.6A CN108603320B (zh) 2016-02-01 2017-01-20 滚筒洗衣机和用于清洁滚筒洗衣机的桶的方法
EP17747647.0A EP3412822B9 (fr) 2016-02-01 2017-01-20 Machine à laver à tambour et son procédé de nettoyage de cuve
AU2017214013A AU2017214013B2 (en) 2016-02-01 2017-01-20 Drum washing machine and method for cleaning tub thereof
US16/073,837 US11326292B2 (en) 2016-02-01 2017-01-20 Drum washing machine and method for cleaning tub thereof

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KR20160012224 2016-02-01
KR10-2016-0012219 2016-02-01
KR20160012220 2016-02-01
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KR20160012219 2016-02-01
KR20160012222 2016-02-01
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CN (1) CN108603320B (fr)
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EP3412822B9 (fr) 2021-08-18
EP3412822A4 (fr) 2019-11-20
KR102522794B1 (ko) 2023-04-19
CN108603320A (zh) 2018-09-28
AU2017214013B2 (en) 2019-07-04
AU2017214013A1 (en) 2018-08-23
KR20180101412A (ko) 2018-09-12
CN108603320B (zh) 2021-02-05

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