WO2021221467A1 - Appareil de traitement de linge - Google Patents

Appareil de traitement de linge Download PDF

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Publication number
WO2021221467A1
WO2021221467A1 PCT/KR2021/005392 KR2021005392W WO2021221467A1 WO 2021221467 A1 WO2021221467 A1 WO 2021221467A1 KR 2021005392 W KR2021005392 W KR 2021005392W WO 2021221467 A1 WO2021221467 A1 WO 2021221467A1
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WO
WIPO (PCT)
Prior art keywords
lift
face
drum
connecting body
height
Prior art date
Application number
PCT/KR2021/005392
Other languages
English (en)
Inventor
Juhan Yoon
Myoungjong Kim
Matthias Herrmann
Original Assignee
Lg Electronics Inc.
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 Lg Electronics Inc. filed Critical Lg Electronics Inc.
Publication of WO2021221467A1 publication Critical patent/WO2021221467A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/08—Driving arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 

Definitions

  • the present application relates to a laundry treating apparatus.
  • a laundry treating apparatus is a generic term for an apparatus for washing laundry, an apparatus for drying the laundry, and an apparatus capable of washing and drying the laundry.
  • Conventional laundry treating apparatuses generally include a drum that provides therein a space in which the laundry (an object to be washed or an object to be dried) is accommodated, and a motor that rotates the drum.
  • the drum disposed in the conventional laundry treating apparatus was constructed to be directly connected to a rotation shaft of the motor (a rotation shaft of the drum is located on an extension line of the motor rotation shaft) to receive power required for the rotation, or constructed to receive the power required for the rotation from the motor rotation shaft through a power transmitting apparatus (a drum belt, a gear, or the like).
  • the drum that receives the power required for the rotation through the drum belt needs a tension regulator that regulates a tension of the drum belt. This is because, when the tension of the drum belt is less than a set force, a frictional force between the drum belt and the drum decreases, which may cause a phenomenon in which a rotational force of the drum belt is not able to be transmitted to the drum (a slip phenomenon of the drum belt).
  • the tension regulator applied to the conventional laundry treating apparatus is composed of a roller in contact with the drum belt, a roller support on which the roller is fixed, and a spring that provides an elastic force to the support such that the roller is remained in contact with the drum belt.
  • the tension regulator of the above structure had a disadvantage that it is difficult to regulate the tension of the drum belt when a rotation direction of the drum is changed.
  • the conventional tension regulator was effective in a laundry treating apparatus in which the rotation direction of the drum is specified as either a clockwise or counterclockwise direction, but had a disadvantage of not being able to be applied to a laundry treating apparatus in which the rotation direction of the drum changes.
  • the conventional tension regulator described above had a disadvantage in that an external force input to the drum belt by a spring is greater than an external force required to maintain the tension of the drum belt, and thus durability of the drum belt is weakened.
  • minute deformation may occur on the drum disposed in the conventional laundry treating apparatus when rotating. This is because generally the drum disposed in the laundry treating apparatus is formed in a hollow cylindrical shape, and the laundry stored inside repeats a movement of falling toward the lowest point of the drum when the drum rotates.
  • the deformation of the drum may cause noise and vibration, and may define a gap between an apparatus that rotatably supports the drum and the drum.
  • the definition of the gap between the drum and the apparatus that supports the drum means a decrease in a drying efficiency.
  • the present application is to provide a laundry treating apparatus capable of minimizing deformation of a drum that occurs during rotation.
  • the present application provides a laundry treating apparatus including a drum formed in a cylindrical shape having a front face, a rear face, and a circumferential face for connecting the front face and the rear face with each other, wherein the drum provides therein a space for accommodating laundry, a board-shaped first agitator assembly protruding from the circumferential face of the drum to a center of the drum, and extending in a direction parallel to an axis passing through a center of rotation of the drum, and a ring-shaped second agitator assembly protruding from the circumferential face of the drum to the center of the drum, and having the same center as the center of rotation of the drum.
  • a distance from the front face to the second agitator assembly may be the same as a distance from the rear face to the second agitator assembly.
  • the laundry treating apparatus may further include a drum belt for connecting the circumferential face of the drum and a circumferential face of a pulley rotated by a motor with each other, and a point where the drum belt contacts the circumferential face of the drum may be set to a point where the second agitator assembly is fixed.
  • the first agitator assembly may include a first lift and a second lift spaced 180 degrees apart from each other based on a center of rotation of the drum
  • the second agitator assembly may include a first connecting body for connecting a right side-face of the first lift and a left side-face of the second lift with each other, and a second connecting body for connecting a left side-face of the first lift and a right side-face of the second lift with each other.
  • a height of the first lift and a height of the second lift may be set the same, and heights of the highest points of the first connecting body and the second connecting body may be set to be equal to or greater than 1/2 of the height of the first lift and equal to or less than the height of the first lift.
  • Heights of the lowest points of the first connecting body and the second connecting body may be set to be less than 1/2 of the height of the first lift.
  • the first connecting body may be formed by a first lift right arm extending along the circumferential face of the drum from the right side-face of the first lift to the left side-face of the second lift, and a second lift left arm extending along the circumferential face of the drum from the left side-face of the second lift to the right side-face of the first lift, and the second connecting body may be formed by a second lift right arm extending along the circumferential face of the drum from the right side-face of the second lift to the left side-face of the first lift, and a first lift left arm extending along the circumferential face of the drum from the left side-face of the first lift to the right side-face of the second lift.
  • a height of a point where the first lift right arm and the second lift left arm are connected to each other, and a height of a point where the second lift right arm and the first lift left arm are connected to each other may be set to be less than 1/2 of the height of the first lift.
  • the laundry treating apparatus may further include a first lift groove defined in a top face of the first lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, and a second lift groove defined in a top face of the second lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, and a ring-shaped trajectory formed by the first connecting body and the second connecting body may pass through the first lift groove and the second lift groove.
  • the first agitator assembly may include a first lift, a second lift, and a third lift spaced 120 degrees apart from each other based on a center of rotation of the drum
  • the second agitator assembly may include a first connecting body connecting a right side-face of the first lift and a left side-face of the second lift with each other, a second connecting body connecting a right side-face of the second lift and a left side-face of the third lift with each other, and a third connecting body connecting a right side-face of the third lift and a left side-face of the first lift with each other.
  • a height of the first lift, a height of the second lift, and a height of the third lift with respect to the circumferential face of the drum may be set the same, and heights of the highest points of the first connecting body, the second connecting body, and the third connecting body with respect to the circumferential face of the drum may be set to be equal to or greater than 1/2 of the height of the first lift and equal to or less than the height of the first lift.
  • Heights of the lowest point of the first connecting body, the lowest point of the second connecting body, and the lowest point of the third connecting body with respect to the circumferential face of the drum may be set to be less than 1/2 of the height of the first lift.
  • the first connecting body may be formed by a first lift right arm extending along the circumferential face of the drum from the right side-face of the first lift to the left side-face of the second lift, and a second lift left arm extending along the circumferential face of the drum from the left side-face of the second lift to the right side-face of the first lift
  • the second connecting body may be formed by a second lift right arm extending along the circumferential face of the drum from the right side-face of the second lift to the left side-face of the third lift
  • a third lift left arm extending along the circumferential face of the drum from the left side-face of the third lift to the right side-face of the second lift
  • the third connecting body may be formed by a third lift right arm extending along the circumferential face of the drum from the right side-face of the third lift to the left side-face of the first lift
  • a first lift left arm extending along the circumferential face of the drum from the left side-face of the first lift to the right side-face of the
  • a height of a point where the first lift right arm and the second lift left arm are connected to each other, a height of a point where the second lift right arm and the third lift left arm are connected to each other are, and a height of a point where the third lift right arm and the first lift left arm are connected to each other may be set to be less than 1/2 of the height of the first lift.
  • the laundry treating apparatus may further include a first lift groove defined in a top face of the first lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, a second lift groove defined in a top face of the second lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, and a third lift groove defined in a top face of the third lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, and a ring-shaped trajectory formed by the first connecting body, the second connecting body, and the third connecting body may pass through the first lift groove, the second lift groove, and the third lift groove.
  • the first agitator assembly may include a first lift, a second lift, a third lift, and a fourth lift spaced 90 degrees apart from each other based on a center of rotation of the drum
  • the second agitator assembly may include a first connecting body connecting a right side-face of the first lift and a left side-face of the second lift with each other, a second connecting body connecting a right side-face of the second lift and a left side-face of the third lift with each other, a third connecting body connecting a right side-face of the third lift and a left side-face of the fourth lift with each other, and a fourth connecting body connecting a right side-face of the fourth lift and a left side-face of the first lift with each other.
  • a height of the first lift, a height of the second lift, a height of the third lift, and a height of the fourth lift with respect to the circumferential face of the drum may be set the same, heights of the highest point of the first connecting body, the highest point of the second connecting body, the highest point of the third connecting body, and the highest point of the fourth connecting body with respect to the circumferential face of the drum may be set to be equal to or greater than 1/2 of the height of the first lift and equal to or less than the height of the first lift, and heights of the lowest point of the first connecting body, the lowest point of the second connecting body, the lowest point of the third connecting body, and the lowest point of the fourth connecting body with respect to the circumferential face of the drum may be set to less than 1/2 of the height of the first lift.
  • the first connecting body may be formed by a first lift right arm extending along the circumferential face of the drum from the right side-face of the first lift to the left side-face of the second lift, and a second lift left arm extending along the circumferential face of the drum from the left side-face of the second lift to the right side-face of the first lift
  • the second connecting body may be formed by a second lift right arm extending along the circumferential face of the drum from the right side-face of the second lift to the left side-face of the third lift
  • a third lift left arm extending along the circumferential face of the drum from the left side-face of the third lift to the right side-face of the second lift
  • the third connecting body may be formed by a third lift right arm extending along the circumferential face of the drum from the right side-face of the third lift to the left side-face of the fourth lift
  • a fourth lift left arm extending along the circumferential face of the drum from the left side-face of the fourth lift to the right side-face of the
  • the laundry treating apparatus may further include a first lift groove defined in a top face of the first lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, a second lift groove defined in a top face of the second lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, a third lift groove defined in a top face of the third lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, and a fourth lift groove defined in a top face of the fourth lift facing the center of rotation of the drum to be concave toward the circumferential face of the drum, and a ring-shaped trajectory formed by the first connecting body, the second connecting body, the third connecting body, and the fourth connecting body may pass through the first lift groove, the second lift groove, the third lift groove, and the fourth lift groove.
  • the present application has an effect of providing the laundry treating apparatus capable of minimizing the deformation of the drum that occurs during the rotation.
  • the present application has an effect of providing a laundry treating apparatus capable of regulating a tension of the drum belt regardless of a rotation direction of the drum.
  • the present application has an effect of providing a laundry treating apparatus capable of minimizing an external force supplied to the drum belt to maintain the tension.
  • FIG. 1 illustrates an example of a laundry treating apparatus.
  • FIGS. 2 to 4 illustrate an example of a driver.
  • FIG. 5 illustrates another embodiment of a driver.
  • FIGS. 6 and 7 illustrate an example of an agitator assembly.
  • FIG. 8 illustrates another embodiment of an agitator assembly.
  • FIG. 1 illustrates an example of a laundry treating apparatus 100.
  • the laundry treating apparatus 100 may include a cabinet 1, a drum 3 rotatably disposed inside the cabinet to provide therein a space for storing laundry (an object to be washed or an object to be dried), and an air supply 5 for removing moisture from the laundry by supplying high-temperature dry air (air with a temperature higher than room temperature and air with a dryness level higher than an indoor dryness level) to the drum 3.
  • high-temperature dry air air with a temperature higher than room temperature and air with a dryness level higher than an indoor dryness level
  • the cabinet 1 may be constructed to include a front panel 11 constituting a front face of the laundry treating apparatus, a rear panel constituting a rear face of the laundry treating apparatus, and a top panel constituting a top face of the laundry treating apparatus.
  • the front panel 11 may include a laundry inlet 13 defined therein to communicate with the drum 3, and the laundry inlet 13 may be opened and closed by a door 15 pivotably coupled to the cabinet.
  • the control panel 7 is disposed on the front panel 11.
  • the control panel 7 may include an input unit 73 that receives a control command from a user, and a display 71 that outputs information such as a control command or the like selectable by the user.
  • the input unit 73 may include a power supply request unit that requests power supply to the laundry treating apparatus, a course input unit that enables the user to select a desired course among a number of courses, and an execution request unit that requests start of the course selected by the user.
  • the drum 3 may be constructed as a cylindrical drum body 31 with through-holes respectively defined in a front face and a rear face thereof.
  • a front support 34 that rotatably supports the front face of the drum body 31 and a rear support 36 that rotatably supports a rear face of the drum body 31 may be arranged inside the cabinet 1.
  • the front support 34 may include a first fixed body fixed inside the cabinet 1, a drum laundry inlet 345 that is disposed to penetrate the first fixed body to communicate the laundry inlet 13 with an interior of the drum body 31, and a first support body 341 disposed on the first fixed body and inserted into the front face of the drum body 31.
  • the first fixed body may be formed in any shape as long as the drum laundry inlet 345 and the first support body 341 are respectively defined therein and disposed thereon.
  • the first support body 341 may be formed in a shape of a pipe protruding from the first fixed body toward the drum body 31.
  • the front support 34 may be disposed to be connected to the laundry inlet 13 through a connecting body 343.
  • the connecting body 343 may be formed in a cylindrical shape surrounding the laundry inlet 13.
  • the drum laundry inlet 345 may be defined as a through-hole connected to the laundry inlet 13 through the connecting body 343.
  • a discharge hole 346 in communication with the air supply 5 may be defined in the connecting body 343.
  • the discharge hole 346 may be defined as a through-hole defined to penetrate the connecting body 343, and a filter 347 may be disposed in the discharge hole 346. Air inside the drum body 31 flows to the air supply 5 through the discharge hole 346 and the filter 347. In this process, the air is filtered by the filter 347.
  • the rear support 36 may include a second fixed body fixed inside the cabinet 1, and a second support body 361 disposed on the second fixed body and inserted into the rear face of the drum body 31.
  • the air supply 5 may be constructed to connect the discharge hole 346 and the supply hole 363 with each other.
  • the air supply 5 may include ducts 51, 53, and 55 that define flow channels for resupplying the air discharged from the drum 3 to the drum 3, and a heat exchanger assembly 57 that dehumidifies and heats the air introduced into the duct.
  • the ducts may include an exhaust duct 51 connected to the discharge hole 346, a supply duct 53 connected to the supply hole 363, and a connecting duct 55 that connects the exhaust duct with the supply duct.
  • the drum body 31 defines the flow channels along which the air circulates together with the ducts 51, 53, and 55.
  • the heat exchanger assembly 57 may be implemented as various apparatuses capable of sequentially performing dehumidification and heating of the air introduced into the ducts.
  • FIG. 1 illustrates an example in which the heat exchanger assembly 57 is implemented as a heat pump.
  • the heat exchanger assembly 57 includes a fan 531 that flows the air along the ducts 51, 53, and 55, a first heat exchanger (a heat absorber) 571 that removes moisture from the air introduced into the ducts, and a second heat exchanger (a heater) 573 disposed inside the ducts to heat the air that has passed through the first heat exchanger 571.
  • a first heat exchanger a heat absorber
  • a second heat exchanger a heater
  • the heat absorber 571 and the heater 573 are sequentially arranged along a flow direction of the air, and are connected to each other through a refrigerant pipe 579 that defines therein a circulation flow channel of a refrigerant.
  • the refrigerant flows along the refrigerant pipe 579 by a compressor 575 located outside the ducts 51, 53, and 55.
  • the refrigerant pipe 579 includes a pressure regulator 577 that regulates a pressure of the refrigerant flowing from the heater 573 to the heat absorber 571.
  • the heat absorber 571 is means for cooling the air and evaporating the refrigerant by transferring heat of the air introduced into the exhaust duct 51 to the refrigerant.
  • the heater 573 is means for heating the air and condensing the refrigerant by transferring heat of the refrigerant that has passed through the compressor 575 to the air. In this case, when passing through the heat absorber 571, the moisture contained in the air flows along a surface of the heat absorber 571 and be collected on a bottom face of the connecting duct 55.
  • the laundry treating apparatus 100 includes a water collector 551.
  • the water collector 551 may be disposed anywhere inside the laundry treating apparatus as long as being capable of storing the water discharged from the heat absorber.
  • FIG. 2 illustrates a case in which the water collector 551 is located inside the connecting duct 55 as an example.
  • a heat exchanger support 553 may be further disposed inside the water collector 551 such that the heat absorber and the heater 571 and 573 do not contact the water stored in the water collector 551.
  • the ducts may include an exhaust duct that guides the air supplied from the discharge hole 346 to the outside of the cabinet 1, and a supply duct that supplies outside air to the drum body 31 through the supply hole 363.
  • the fan may be disposed in the exhaust duct, and the heat exchanger assembly may be implemented as a heater disposed in the supply duct.
  • the drum body 8 may rotate in clockwise and counterclockwise directions by a driver 8.
  • the driver 8 may include a motor 81 disposed and fixed inside the cabinet 1, a drum pulley 85 rotated by the motor, a drum belt 88 that connects a circumferential face of the drum body 31 with a circumferential face of the drum pulley 85, and a tension regulator 86 that controls a tension of the drum belt 88 when the drum pulley 85 rotates.
  • the drum pulley 85 may be constructed to receive a rotational force of a motor rotation shaft 813 through a belt or a gear (see FIG. 2), and may be constructed to be fixed to the motor rotation shaft 813 to receive the rotational force directly from the motor rotation shaft 813 (see FIG. 5, the rotational force of the motor rotation shaft is transmitted to the drum pulley without passing through power transmission means such as the belt or the gear).
  • the motor 81 may include a housing 811 disposed and fixed inside of the cabinet 1 and to which the motor rotation shaft 813 is rotatably fixed.
  • a motor pulley 83 is fixed to the motor rotation shaft 813, and the motor pulley 83 and the drum pulley 85 are connected to each other through a pulley belt 89. That is, a rotational force of the motor pulley 83 is transmitted to the drum pulley 85 through the pulley belt 89. Therefore, when the motor rotation shaft 813 rotates in the clockwise direction, the motor pulley 83 and the drum pulley 85 will also rotate in the clockwise direction. In addition, when the motor rotation shaft 813 rotates in the counterclockwise direction, the motor pulley 83 and the drum pulley 85 will also rotate in the counterclockwise direction.
  • the drum pulley 85 may be constructed to receive a rotational motion of the motor rotation shaft 813 through the gear. That is, a main gear may be disposed on the motor rotation shaft 813, and a driven gear connected to the main gear may be disposed on the circumferential face of the drum pulley 85.
  • the drum pulley 85 may be rotatably fixed to a body shaft 87.
  • a shaft support 815 may be disposed on a circumferential face of the housing 81, and one end of the body shaft 87 may be fixed to the shaft support 815.
  • the drum pulley 85 may be implemented as a cylindrical pulley body 851 that is rotatably fixed to the body shaft 87.
  • a through-hole through which the body shaft 87 passes may be defined in the pulley body 851.
  • the pulley body 851 includes ring-shaped first groove 855 and second groove 857.
  • the first groove 855 provides therein a space in which the pulley belt 89 is accommodated
  • the second groove 857 provides therein a space in which the drum belt 88 is accommodated.
  • a diameter of a ring defining the first groove 855 may be set smaller than a diameter of a ring defining the second groove 857, or may be set larger than the diameter of the ring defining the second groove 857.
  • the tension regulator 86 may include a support body 861 rotatably fixed to the body shaft 87, a first roller 866 and a second roller 868 rotatably fixed to the support body 861 to support the drum belt 88.
  • the first roller 866 and the second roller 868 are not only respectively located at higher points than the body shaft 87, but also are respectively located at points symmetrical to each other around a reference line C1 connecting the body shaft 87 with a center of rotation S of the drum body 31. This is to regulate the tension of the drum belt 88 based on a rotation direction of the drum body 31.
  • the support body 861 has a body through-hole defined therein.
  • a body bearing 865 that rotatably fixes the support body 861 to the body shaft 87 may be disposed in the body through-hole.
  • the first roller 866 may be fixed to a first roller shaft 866a rotatably fixed to the support body 861 through a first bearing 867
  • the second roller 868 may be fixed to a second roller shaft 868a rotatably fixed to the support body 861 through a second bearing 869.
  • a shape of the support body 861 may be various.
  • FIG. 4 illustrates a case in which the support body 861 is implemented as a triangular board as an example, but the support body 861 may be formed in a V-shape. That is, the support body 861 may include a hub in which the body bearing 865 is formed, a first arm that extends from the hub and to which the first roller 866 is fixed, and a second arm that extends from the hub and to which the second roller 868 is fixed.
  • FIG. 4 is a view illustrating the drum body 31 viewed from the rear face of the cabinet toward the front face of the cabinet.
  • a rotation direction of the drum body to be described below means a rotation direction when the drum body is viewed from the rear of the drum.
  • the neutral position refers to a position of the support body for remaining the state in which the first roller 866 and the second roller 868 are respectively located at the points symmetrical to each other around the reference line C1.
  • the motor rotation shaft 813 rotates in the clockwise direction
  • the motor pulley 83 and drum pulley 85 also rotate in the clockwise direction.
  • the drum body 31 rotates in the clockwise direction (when viewed from the front of the drum body, the drum body rotates in the counterclockwise direction).
  • the tension acting on the drum belt 88 supported on the first roller 866 becomes greater than the tension acting on the drum belt 88 supported on the second roller 868. Therefore, when the motor rotation shaft 813 rotates in the clockwise direction, as shown in (b) in FIG. 4, the support body 861 at the neutral position rotates toward the right side of the reference line C1. As a result, the tension of the drum belt 88 is maintained.
  • the tension regulator 86 disposed in the driver has a structure in which a separate restoring force supply (a spring or the like) for returning the support body 861 to the neutral position when the motor rotation shaft 813 does not rotate is unnecessary. Therefore, the laundry treating apparatus 100 described above may not only control the tension of the drum belt 88 regardless of the rotation direction of the drum body 31, but also minimize durability deterioration problem of the drum belt resulted from the restoring force supply such as the spring or the like.
  • a separate restoring force supply a spring or the like
  • FIG. 5 illustrates another embodiment of the driver 8 described above.
  • the drum pulley 85 and the support body 861 of the tension regulator are arranged on the motor rotation shaft 813. That is, the driver 8 according to the present embodiment includes the motor 81, the drum pulley 85 fixed to the rotation shaft 813 of the motor, and the tension regulator 86 rotatably coupled to the rotation shaft 813 of the motor. Accordingly, the motor rotation shaft 813 in the present embodiment will serve as the body shaft 87 in the embodiment of FIG. 4.
  • the tension regulator 86 includes the support body 861 fixed to the motor rotation shaft 813 through the body bearing 865, and the first roller 866 and the second roller 868 rotatably fixed to the support body 861 to support the drum belt 88.
  • the first roller 866 and the second roller 868 are arranged to be respectively located at higher points than the motor rotation shaft 813.
  • the first roller 866 and the second roller 868 are respectively located at points symmetrical to each other around a reference line C2 connecting the motor rotation shaft 813 (a center of rotation of the support body) with a center of rotation of the drum body.
  • the tension regulator 86 described above includes the support body 861 fixed to the motor rotation shaft 813 through the body bearing 865 fixed to the motor rotation shaft 813. Accordingly, when the motor rotation shaft 813 rotates, the drum pulley 85 rotates in the same direction as a rotation direction of the motor rotation shaft 813, but a rotation direction of the support body 861 will be determined based on the tension acting on the drum belt 88 regardless of the rotation direction of the motor rotation shaft 813.
  • the drum body 31 When the drum body 31 is rotated, the drum body 31 may be deformed. The deformation of the drum body 31 may cause noise and vibration. In addition, the deformation occurring on the drum body 31 while the drum body 31 is rotating may cause a decrease in a drying efficiency (an increase in a drying time and a loss of heat energy supplied from the heat exchanger assembly). This is because the deformation of the drum body occurring during the operation of the drum body 31 and the heat exchanger assembly 57 may define gaps respectively in a space between the front face of the drum body 31 and the first support body 341 and a space between the rear face of the drum body 31 and the second support body 361, and thermal energy may leak through the gaps.
  • the drum belt 88 may be located at a center of the circumferential face of the drum body 31. That is, a distance from the front face of the drum body 31 to a point at which the drum belt 88 is in contact with the drum body 31 may be set equal to a distance from the rear face of the drum body 31 to the point at which the drum belt 88 is in contact with the drum body.
  • an agitator assembly 9 may be further disposed inside the drum body 31.
  • the agitator assembly 9 may include a first agitator assembly 91, 93, 95, and 97 in a shape of a board extending along a direction (an X-axis direction) parallel to an axis C passing through a center of rotation of the drum body 31, and a ring-shaped second agitator assembly 92, 94, 96, and 98 having the same center as the center of rotation of the drum body 31.
  • the first agitator assembly may be means for moving the laundry along a height direction (a Z-axis direction) of the drum body
  • the second agitator assembly may be means for reciprocating the laundry along a front and rear direction (the X-axis direction) of the drum body.
  • FIG. 6 illustrates a case in which the first agitator assembly is composed of a first lift 91 and a second lift 93 spaced 180 degrees apart from each other based on the center of rotation S of the drum body, and the second agitator assembly is composed of a first connecting body 92 connecting a right side-face of the first lift 91 with a left side-face of the second lift 93, and a second connecting body 94 connecting a right side-face of the second lift 93 with a left side-face of the first lift 91 as an example.
  • a height of the first lift 91 (a length of the first lift protruding toward the center of the drum body based on the circumferential face of the drum body) and a height of the second lift may be set equal.
  • a height of the first connecting body 92 and a height of the second connecting body 94 may be set (uniformly set) such that there is no change along a circumferential direction of the drum body 31.
  • the heights of the first connecting body 92 and the second connecting body 94 are set to be equal to or less than the lift height and equal to or greater than 1/2 of the lift height.
  • the height of the first connecting body 92 and the height of the second connecting body 94 are set equal to the height of each of the lifts 91 and 93, an effect of minimizing the deformation of the drum body 31 may be expected.
  • the height of the first connecting body 92 and the height of the second connecting body 94 are set smaller than the height of each of the lifts 91 and 93, an advantageous effect may be expected in moving the laundry located in a front space of the drum body 31 to a rear space of the drum body 31 (in moving the laundry located in the rear space of the drum body to the front space of the drum body).
  • the height of the first connecting body 92 and the height of the second connecting body 94 may decrease or increase toward neighboring lifts, or may respectively decrease toward mid-points of two neighboring lifts 91 and 93. (a) in FIG. 6 illustrates the latter as an example.
  • a height H2 of the highest point of the first connecting body 92 and a height H2 of the highest point of the second connecting body 94 are set to be equal to or less than a height H1 of the lift and equal to or greater than 1/2 of the height H1 of the lift.
  • a height of the lowest point of the first connecting body 91 and a height of the lowest point of the second connecting body 93 may be set to be less than 1/2 of the height H1 of the lift.
  • the laundry treating apparatus equipped with the agitator assembly 9 having the above-described structure may not only minimize the deformation of the drum body 31, but also increase an agitation effect of laundry, thereby minimizing the drying time (increasing the drying efficiency).
  • the first connecting body 92 may be formed by a first lift right arm 921 extending along the circumferential face of the drum body 31 from the right side-face of the first lift 91 to the left side-face of the second lift 93, and a second lift left arm 922 extending along the circumferential face of the drum body from the left side-face of the second lift 93 to the right side-face of the first lift 91.
  • the second connecting body 94 may be formed by a second lift right arm 941 extending along the circumferential face of the drum body 31 from the right side-face of the second lift 93 to the left side-face of the first lift 91, and a first lift left arm 942 extending along the circumferential face of the drum body from the left side-face of the first lift 91 to the right side-face of the second lift 93.
  • the lowest point of the first connecting body 92 may be set as a point at which the first lift right arm 921 and the second lift left arm 922 are connected to each other, and the lowest point of the second connecting body 94 may be set as a point at which the second lift right arm 941 and the first lift left arm 942 are connected to each other.
  • FIG. 6 illustrates a case in which the first agitator assembly is composed of the first lift 91, the second lift 93, and a third lift 95 spaced 120 degrees apart from each other based on the center of rotation S of the drum body as an example.
  • the second agitator assembly may include the first connecting body 92 connecting the right side-face of the first lift 91 with the left side-face of the second lift 93, the second connecting body 94 connecting the right side-face of the second lift 93 with a left side-face of the third lift 95, and a third connecting body 96 connecting a right side-face of the third lift 95 with the left side-face of the first lift 91.
  • the height of the first lift 91, the height of the second lift 93, and a height of the third lift 95 may be set to be equal.
  • the height of the first connecting body 92, the height of the second connecting body 94, and a height of the third connecting body 96 may be set to be equal to the height of the lift 91, or may be set to be 1/2 of the height of the first lift.
  • the height of the first connecting body 92, the height of the second connecting body 94, and the height of the third connecting body 96 may be uniform along the circumferential face of the drum body 31, may increase or decrease toward neighboring lifts, or may respectively decrease toward mid-points of two neighboring lifts.
  • FIG. 6 illustrates the case in which the height of the first connecting body 92, the height of the second connecting body 94, and the height of the third connecting body 96 respectively decrease toward the mid-points of the two neighboring lifts as an example. That is, the height of the first connecting body 92, the height of the second connecting body 94, and the height of the third connecting body 96 may be set such that a height of points respectively connected to the lifts 91, 93, and 95 are the greatest and a height of the mid-points of the two neighboring lifts is the smallest.
  • heights of the highest point of the first connecting body 92, the highest point of the second connecting body 94, and the highest point of the third connecting body 96 may be set to be equal to or greater than 1/2 of the height H1 of the lift and equal to or less than the height H1 of the lift. Heights of the lowest point of the first connecting body 92, the lowest point of the second connecting body 94, and the lowest point of the third connecting body 96 may be set to be less than 1/2 of the height H1 of the lift.
  • the first connecting body 92 of (b) in FIG. 6 may be formed by the first lift right arm 921 extending from the right side-face of the first lift 91 to the left side-face of the second lift 93 and the second lift left arm 922 extending from the left side-face of the second lift 93 to the right side-face of the first lift 91
  • the second connecting body 94 may be formed by the second lift right arm 941 extending from the right side-face of the second lift 93 to a left side-face of the third lift 95 and a third lift left arm 943 extending from the left side-face of the third lift 95 to the right side-face of the second lift 93
  • the third connecting body 96 may be formed by a third lift right arm 961 extending from a right side-face of the third lift 95 to the left side-face of the first lift 91 and the first lift left arm 942 extending from the left side-face of the first lift 91 to the right side-face of the third lift 95.
  • the lowest point of the first connecting body 92 may be set as a point at which the first lift right arm 921 and the second lift left arm 922 are connected to each other
  • the lowest point of the second connecting body 94 may be set as a point at which the second lift right arm 941 and the third lift left arm 943 are connected to each other
  • the lowest point of the third connecting body 96 may be set as a point at which the third lift right arm 961 and the first lift left arm 942 are connected to each other.
  • FIG. 6 illustrates a case in which the first agitator assembly is composed of the first lift 91, the second lift 93, the third lift 95, and a fourth lift 97 spaced 90 degrees apart from each other based on the center of rotation S of the drum body as an example.
  • the second agitator assembly may be composed of the first connecting body 92 connecting the right side-face of the first lift 91 with the left side-face of the second lift 93, the second connecting body 94 connecting the right side-face of the second lift 93 with the left side-face of the third lift 95, the third connecting body 96 connecting the right side-face of the third lift 95 with a left side-face of the fourth lift 97, and a fourth connecting body 98 connecting a right side-face of the fourth lift 97 with the left side-face of the first lift 91.
  • the height of the first lift 91, the height of the second lift 93, the height of the third lift 95, and a height of the fourth lift 97 in this embodiment may be set to be equal.
  • the heights of the first connecting body 92, the second connecting body 94, the third connecting body 96, and the fourth connecting body 98 may be set to be uniform. In this case, it is preferable that heights of the respective connecting bodies 92, 94, 96, and 98 are set to be equal to or less than the height of the lift and equal to or greater than 1/2 of the height of the lift.
  • the heights of the first connecting body 92, the second connecting body 94, the third connecting body 96, and the fourth connecting body 98 may increase or decrease toward neighboring lifts, or may respectively decrease toward mid-points of two neighboring lifts.
  • (c) in FIG. 6 illustrates a case in which the heights of the respective connecting bodies 92, 94, 96, and 98 decrease toward the mid-points of the two neighboring lifts as an example.
  • heights of the highest point of the first connecting body 92, the highest point of the second connecting body 94, the highest point of the third connecting body 96, and the highest point of the fourth connecting body 98 may be set to be equal to or greater than 1/2 of the height H1 of the lift and equal to or less than the height H1 of the lift.
  • heights of the lowest point of the connecting bodies may be set to be less than 1/2 of the height H1 of the lift.
  • the first connecting body 92 shown in (c) in FIG. 6 may be formed by the first lift right arm 921 and the second lift left arm 922
  • the second connecting body 94 may be formed by the second lift right arm 941 and the third lift left arm 943
  • the third connecting body 96 may be formed by the third lift right arm 961 and a fourth lift left arm 963
  • the fourth connecting body 98 may be formed by a fourth lift right arm 981 and the first lift left arm 942.
  • the lowest point of the first connecting body 92 may be set as a point at which the first lift right arm 921 and the second lift left arm 922 are connected to each other
  • the lowest point of the second connecting body 94 may be set as a point at which the second lift right arm 941 and the third lift left arm 943 are connected to each other
  • the lowest point of the third connecting body 96 may be set as a point at which the third lift right arm 961 and the fourth lift left arm 963 are connected to each other
  • the lowest point of the fourth connecting body 98 may be set as a point at which the fourth lift right arm 981 and the first lift left arm 942 are connected to each other.
  • the second agitator assembly 92, 94, 96, and 98 shown in FIG. 6 may be located at the center of the circumferential face of the drum body 31, and the drum belt 88 may be disposed to be in contact with a region where the second agitator assembly is fixed of the circumferential face of the drum body 31. That is, a distance from the front face of the drum body 31 to a point at which the second agitator assembly 92, 94, 96, and 98 is located may be set equal to a distance from the rear face of the drum body 31 to the point at which the second agitator assembly 92, 94, 96, and 98 is located.
  • the drum belt 88 may be constructed to surround a point at which a ring formed by the second agitator assembly of the circumferential face of the drum body 31 is fixed. This is to minimize a possibility of the deformation of the drum body 31 resulted from the drum belt 88.
  • FIG. 8 illustrates an example of the first agitator assembly 91, 93, 95, and 97.
  • a first agitator assembly illustrated in (a) in FIG. 8 illustrates a case in which a top face of the first agitator assembly facing the center of the drum body 31 is parallel to the circumferential face of the drum body 31, and a first agitator assembly illustrated in (b) in FIG. 8 illustrates a case in which a top face of the first agitator assembly facing the center of the drum body 31 has a groove defined therein concave toward the circumferential face of the drum body 31.
  • the embodiment of (b) in FIG. 8 has a larger surface area of *?*the first agitator assembly than that in the embodiment of (a) in FIG. 8. Therefore, the first agitator assembly 91, 93, 95, and 97 having the structure of (b) in FIG. 8 may increase a frictional force with the laundry when the drum body 31 rotates, through which may easily agitate the laundry.
  • a first lift groove 911 concave toward the circumferential face of the drum body 31 is defined in a top face of the first lift 91
  • a second lift groove 931 concave toward the circumferential face of the drum body 31 is defined in a top face of the second lift 93
  • a third lift groove 951 concave toward the circumferential face of the drum body 31 is defined in a top face of the third lift 95
  • a fourth lift groove 971 concave toward the circumferential face of the drum body 31 is defined in a top face of the fourth lift 97.
  • a ring-shaped trajectory formed by the first connecting body 92, the second connecting body 94, the third connecting body 96, and the fourth connecting body 98 may pass through the first lift groove 911, the second lift groove 931, the third lift groove 951, and the fourth lift groove 971.
  • laundry treating apparatus and the method for controlling the laundry treating apparatus as described above may be modified and implemented in various forms/ Thus, the scope of the invention is not limited to the above-described embodiments.

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

Abstract

La présente invention concerne un appareil de traitement de linge comprenant un tambour de forme cylindrique pourvu d'une face avant, d'une face arrière, et d'une face circonférentielle reliant la face avant et la face arrière l'une à l'autre, le tambour définissant à l'intérieur un espace pour recevoir le linge, un premier ensemble agitateur en forme de plaque faisant saillie depuis la face circonférentielle du tambour vers le centre du tambour, et s'étendant dans une direction parallèle à un axe passant par un centre de rotation du tambour, et un second ensemble agitateur de forme annulaire faisant saillie depuis la face circonférentielle du tambour vers le centre du tambour, et ayant le même centre que le centre de rotation du tambour.
PCT/KR2021/005392 2020-04-29 2021-04-28 Appareil de traitement de linge WO2021221467A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0052661 2020-04-29
KR1020200052661A KR20210133706A (ko) 2020-04-29 2020-04-29 의류처리장치

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WO2021221467A1 true WO2021221467A1 (fr) 2021-11-04

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100651865B1 (ko) * 2005-12-28 2006-12-04 엘지전자 주식회사 의류 건조기
KR100677875B1 (ko) * 2004-01-27 2007-02-05 삼성전자주식회사 드럼세탁기
WO2011105829A2 (fr) * 2010-02-24 2011-09-01 Lg Electronics Inc. Machine de traitement de buanderie
EP2719818A1 (fr) * 2012-10-09 2014-04-16 Indesit Company S.p.A. Sèche-linge domestique
US20140208810A1 (en) * 2011-07-14 2014-07-31 Electrolux Home Products Corporation N.V. Drum Washing Machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100677875B1 (ko) * 2004-01-27 2007-02-05 삼성전자주식회사 드럼세탁기
KR100651865B1 (ko) * 2005-12-28 2006-12-04 엘지전자 주식회사 의류 건조기
WO2011105829A2 (fr) * 2010-02-24 2011-09-01 Lg Electronics Inc. Machine de traitement de buanderie
US20140208810A1 (en) * 2011-07-14 2014-07-31 Electrolux Home Products Corporation N.V. Drum Washing Machine
EP2719818A1 (fr) * 2012-10-09 2014-04-16 Indesit Company S.p.A. Sèche-linge domestique

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