Including Counterbalance Patents (Class 68/23.2)
  • Patent number: 10513813
    Abstract: A laundry treating machine is provided. The laundry treating machine may include a tub to receive wash water, a drum rotatably provided in the tub, an air supply device to supply air to the tub, a lint filter to filter lint from the air circulated by the air supply device, a filter cleaning device to supply cleaning water to the lint filter to remove the lint from the lint filter, and a cooling water supply device to supply cooling water to an inner surface of the tub such that moisture contained in air is condensed at the inner surface of the tub.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: December 24, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Youngjin Doh, Jihong Lee, Hong Namgoong, Kyuhwan Lee
  • Patent number: 10260191
    Abstract: The invention relates to a device for balancing a machine with a rotary drum, the device comprising at least one balancing ring (20) for mounting coaxially on the rotary drum, which ring presents an inside space (51) subdivided into a plurality of distinct channels (52), said channels (52) extending around the axis of said balancing ring over its entire circumference. According to the invention, at least a portion of the channels (52) each present in at least one direction an inside dimension (b) that is not zero and less than or equal to 3 millimeters.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: April 16, 2019
    Assignee: AMNC INNOVATIONS
    Inventor: Ali Messaoudi
  • Patent number: 10240273
    Abstract: Disclosed is a laundry treatment apparatus including a balancer capable of active control. The laundry treatment apparatus includes a cabinet 1 with a laundry feeding hole formed therein, a tub 10 provided within the cabinet and for holding washing water, a drum 20 rotatably installed around a rotation axis which may be forward inclined within the tub for holding laundry, a driving unit 30 to rotate the drum, a balancer 110 disposed in the drum and having an internal space therein, wherein water is selectively introduced into the internal space of the balancer when the drum is rotated, a centrifugal channel device 140a disposed on the backside of the drum, rotated along with the drum, and having an opening portion formed toward a back direction so that water is supplied to the opening portion and guided into the internal space of the balancer, and a nozzle 180 disposed at the back of the drum, spaced apart from the drum, to spray water toward the opening portion.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: March 26, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Mingyu Jo, Sungmin Kim, Seungjoon Kim, Seungchul Park
  • Patent number: 10202718
    Abstract: Disclosed herein is a laundry treatment apparatus including balancers. The laundry treatment apparatus includes a cabinet 1 with a laundry feeding hole formed therein, a tub 10 provided within the cabinet and for holding washing water, a drum 20 installed within the tub for holding laundry, a driving unit to rotate the drum, a plurality of balancers 110 each having an internal space formed in the balancer in which water is received, the plurality of balancers spaced apart from each other on the circumference of the drum, and an inflow channel device 140 to selectively guide water from the outside of the drum to the internal spaces of the plurality of balancers when the drum is rotated.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: February 12, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Mingyu Jo, Hyoungmin Sim, Seungjoon Kim, Seungchul Park
  • Patent number: 9994988
    Abstract: Disclosed herein is a washing machine having an improved balancing function. The washing machine includes a cabinet, a drum disposed in the cabinet to be rotatable, a balancer installed at the drum to offset an unbalanced load generated at the drum when the drum is rotated, and at least one magnetic body disposed between the balancer and the drum.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min Sung Kim, Jeong Hoon Kang, Dong Ha Jung
  • Patent number: 9990333
    Abstract: In one embodiment, a system or method for kinematically synchronizing uncoupled, dissimilar rotational systems pertain to modeling a first rotational system using an equation of motion to obtain a first system model, modeling a second rotational system that is physically dissimilar to the first rotational system using the equation of motion to obtain a second system model, and matching kinematic matching coefficients of the equations of motion for the first and second system models.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: June 5, 2018
    Assignee: University of South Florida
    Inventors: Kyle B. Reed, Ismet Handzic
  • Patent number: 9803308
    Abstract: A balancer includes a balancer housing having an annular channel defined therein, at least one mass movably disposed in the channel, and at least one magnet coupled to one side of the balancer housing to restrain movement of the mass along the channel when rotational speed of a drum of the washing machine is within a predetermined range. The magnet includes a plurality of unit magnets arranged in a circumferential direction of the balancer housing.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: October 31, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Hoon Kang, Min Sung Kim, Dong Ha Jung, Doo Young Ryu
  • Patent number: 9790631
    Abstract: A washing machine includes a cabinet, a drum rotatably arranged within the cabinet, an annular recess provided in the drum, and a balancer to offset an unbalanced load caused within the drum during rotation of the drum. The balancer includes a balancer housing mounted to the recess and has an annular channel therein, at least one mass movably disposed in the channel, and at least one ball disposed between the balancer housing and the mass to generate rolling motion.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: October 17, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Ha Jung, Jeong Hoon Kang, Min Sung Kim, Doo Young Rou
  • Patent number: 9765466
    Abstract: A balancer of a washing machine having improved balancing performance. The balancer includes a balancer housing having an annular channel therein, at least one mass movably disposed in the channel at least one groove recessed in an inner surface of the balancer housing so as to accommodate the mass, and at least one magnet coupled to an outer surface of the balancer housing to restrict the mass accommodated in the groove when an RPM of the drum is within a specific RPM range. The magnet is configured as a plurality of N poles and S poles which are arranged alternately, and the outermost pole of the magnet among the plural N poles and S poles has a relatively shorter length than another adjacent pole.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: September 19, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Hoon Kang, Dong Ha Jung, Min Sung Kim
  • Patent number: 9719202
    Abstract: A balancer includes a balancer housing having an annular channel defined therein, at least one mass movably disposed in the channel, at least one magnet coupled to one side of the balancer housing to restrain movement of the mass along the channel when rotational speed of a drum of the washing machine is within a predetermined range, and an inclined sidewall formed at an inner surface of the balancer housing to support the mass in a direction resisting centrifugal force applied to the mass during rotation of the drum.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: August 1, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Ha Jung, Jeong Hoon Kang, Min Sung Kim, Doo Young Ryu
  • Patent number: 9708742
    Abstract: A dynamic balancer device for mounting to and balancing a rotatable drum in a laundry treating appliance comprises an enclosed non-metal annular housing having a radial circumferential wall, an annular metal race within the non-metal annular housing disposed against the radial circumferential wall, and a mass disposed in the annular race and movable therein.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: July 18, 2017
    Assignee: Whirlpool Corporation
    Inventors: Donald E. Erickson, Mark R. Haslanger, Stephen D. Ostdiek, Jaime E. Rodriguez
  • Patent number: 9650736
    Abstract: A balancer includes a balancer housing coupled to a drum of a washing machine, the balancer housing having an annular channel defined therein, at least one mass movably disposed in the channel, at least one magnet to restrain movement of the mass along the channel when rotational speed of the drum is within a predetermined range, and at least one magnet fixing rib formed at one side of the balancer housing to fix the magnet.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: May 16, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Doo Young Ryu, Won Young Jung, Young Jin Cho, Jeong Hoon Kang
  • Patent number: 9637853
    Abstract: A washing machine capable of manipulating a balancer with a simple manipulation, and a balancer thereof, the washing machine including a rotating tub configured to accommodate a laundry while being rotatably disposed on a shaft, at least one mass mounted on the rotating tub so as to move in a circumferential direction of the rotating tub, thereby offsetting an unbalanced load of the rotating tub, at least one wire extending along the circumferential direction of the rotating tub and coupled to the at least one mass, and at least one driving unit coupled to the at least one wire and configured to rotate the at least one mass in the circumferential direction of the rotating tub.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: May 2, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hooi Joong Kim, Sung Jong Kim, Moo Hyung Lee, Jae Seuk Park, Sung Jin Cho, Ii Sung Bae, Ho Choi
  • Patent number: 9487899
    Abstract: A balancer of a washing machine including a balancer housing mounted to a front surface of a drum and having an annular channel therein, a plurality of masses movably disposed along the channel, at least one magnet coupled to the balancer housing so as to restrict the masses from moving along the channel when a revolution per minute value of the drum is within a specific revolution per minute range, and at least one guide groove which is formed on an inner surface of the balancer housing and guides movement of the plural masses when the drum rotates.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: November 8, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min Sung Kim, Dong Ha Jung, Jeong Hoon Kang
  • Patent number: 9243361
    Abstract: A washing machine that calculates a temperature of a balancer to effectively control a motor and a method of controlling the washing machine are provided. The washing machine comprises a rotatable drum that receives laundry, a motor that rotates the drum, a balancer that is connected to the drum, the balancer changing a center of gravity of the drum, and a controller that rotates the motor at a constant rotational speed and then calculates a temperature of the balancer based on a period of a variation in rotational speed of the motor.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: January 26, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Bon Kwon Koo, Kyo Soon Chae
  • Patent number: 9228286
    Abstract: A drum type washing machine includes a housing; a spin tub rotatable by a driving motor through a rotating shaft; a balancer installed at a rear section of the spin tub; a shaft flange including a hub section to fixedly install the rotating shaft and a plurality of arm sections extending radially outward from the hub section and mounted to the spin tub so as to uniformly transfer the rotational force to the spin tub; and a rear cover provided on the rear section of the spin tub. The balancer is disposed adjacent to the rear cover and the shaft flange such that the first annular-shaped member contacts the shaft flange and the second annular-shaped member contacts the rear cover.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: January 5, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ja Young Kim, Ito Michiaki, Doo Young Ryu, Myung Sun Kang
  • Patent number: 9175743
    Abstract: The present invention relates to a laundry processing apparatus. In particular, the laundry processing apparatus comprises: a cabinet; an outer chamber provided within the cabinet and in which wash water is filled; an inner chamber rotatably provided within the outer chamber to hold laundry; an upper balancer disposed at an upper portion of the inner chamber; and a lower balancer disposed at a lower portion of the inner chamber, wherein either the upper balancer or the lower balancer is a liquid balancer filled with liquid, and the other balancer is a ball balancer having a ball therein, such that the advantages of maximized balancing results and an effective reduction in vibration may be achieved.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: November 3, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Youngjong Kim, Hyuksoo Lee, Seongno Yoon, Dongyoon Kim, Dongmin Kim
  • Patent number: 9169591
    Abstract: A washing machine provided with a balancing device which may suppress variation in horizontal vibration of a spin basket without performing control operation. The balancing device includes a ring-shaped casing installed to be concentric with the spin basket, and a plurality of the balancing balls and a viscous fluid. A ring-shaped ball accommodation portion, a fluid accommodation portion provided at a lower inner side of the ball accommodation portion in a radial direction of the ball accommodation portion, and a communication channel are formed in the casing. The fluid accommodation portion is provided at a portion of the casing along a circumferential direction of the casing. A bottom surface of the ball accommodation portion is inclined downward such that the balancing balls gather at the opposite position facing the fluid accommodation portion when rotation of the spin basket is stopped.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: October 27, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ohyagi Atsushi, Ikeda Izumi
  • Patent number: 9150996
    Abstract: The bicycle-driven clothes washing machine includes a bicycle frame, a drive mechanism, and a washing machine drum assembly adjacent the bicycle frame. The drum assembly includes an outer drum having at least a portion thereof at least transparent or partially transparent, the outer drum selectively filled with a washing liquid. An inner drum having a plurality of perforations is rotatably positioned inside the outer drum and mounted to the drive mechanism to be driven thereby via pedal action, the inner drum holding contents to be washed. Both the outer drum and the inner drum can be provided with respective covers to secure contents within the respective drums. An inlet line for introducing washing liquid and an outlet line for draining are attached to the outer drum. Each inlet and outlet line is provided with a valve system selectively operable to supply washing liquid for washing and draining the washing liquid.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: October 6, 2015
    Inventor: Fawzi Behbehani
  • Patent number: 9145633
    Abstract: A small size pulsator-type automatic washing machine comprises a housing, a control panel seat mounted on the top of the housing, a pedestal mounted at the bottom of the housing, an outer tub and an inner tub mounted inside the housing. A direct driving motor and a bearing block are mounted at the bottom of the outer tub. The motor is mounted on the outer tub by fixing elements, and a motor shaft is coupled with a pulsator shaft inside the bearing block. A fastener strap fixes the motor and the bearing block together onto the outer tub of the washing machine, thus reducing occupied space of the washing machine while improving a variety of installation mechanism of conventional washing machine. An insulation unit is disposed in the joint between the motor shaft and the tub shaft, such that the two parts cannot be in direct contact.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: September 29, 2015
    Assignees: HAIER GROUP CORPORATION, QINGDAO HAIER WASHING MACHINE CO., LTD.
    Inventors: Peishi Lv, Sheng Xu, Jie Liu, Xiaojie Pi, Yuling Chen
  • Patent number: 9115782
    Abstract: Disclosed is a ball balancer that increases a rate of balls in ball detention portions and restricts aggravation of unbalance caused by balls outside of the ball detention portions. When a rotation speed of a rotator is less than a first rotation speed, the ball detention portion allows the ball moved from a rolling face to be detained therein and to allow the ball therein to come into contact with the released ball outside thereof to prevent separation of the released ball from the rolling face. Anti-separation portions are provided to come into contact with the released balls outside of the ball detention portions to prevent separation of the released balls from the rolling face. When the rotation speed is greater than the first rotation speed, the ball detention portion allows separation of the ball therein to the rolling face by centrifugal force applied thereto.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 25, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Shimada Yoshinari, Ohyagi Atsushi
  • Patent number: 9109322
    Abstract: A front loading washing machine including a housing; a water reservoir installed in the housing for containing washing water; a spin tub provided in the water reservoir to hold laundry to be washed, the spin tub having an annular recess and rotating with respect to a horizontal axis of the washing machine; and at least one balancer installed in the annular recess of the spin tub, the balancer comprising an annular shaped race formed of a plastic material.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: August 18, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Doo Young Ryu, Ja Young Kim, Ito Michiaki, Myung Sun Kang
  • Patent number: 9051678
    Abstract: Disclosed is a laundry machine having an increased wash capacity. The laundry machine includes a cabinet, a tub connected to vibration sources through a vibration transmission blocking member, a drum rotatably provided in the tub, a suspension unit to substantially damp and support the vibration sources, and ball balancers, each of which includes a race, balls contained in the race, and an oil filing the race, provided on the drum.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: June 9, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Young Suk Kim, Hyun Seok Seo, Suk Yun Moon, Dong II Lee, Ig Geun Kwon
  • Publication number: 20150121968
    Abstract: A washing machine includes a cabinet, a tub provided inside the cabinet to store wash water therein, a drum rotatably provided inside the tub, and a balancer comprising an upper side surface covering an outer surface of a bottom of the drum and a lower side surface formed at one side of the upper side surface in a planar shape while facing an inner surface of a bottom of the tub. The balancer is configured to counterbalance an unbalanced load of the drum, thereby saving energy and enhancing balancing efficiency.
    Type: Application
    Filed: October 20, 2014
    Publication date: May 7, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Hyun KIM, Sang Up LEE, Dae Gyu KANG, Seung Youp LEE
  • Patent number: 9003838
    Abstract: A laundry treating appliance having a drum, defining a treating chamber, with a lifter and a balancing system having at least one balancing ring and a reservoir located in the lifter and a liquid supply system fluidly coupled to the reservoir. Liquid may be supplied to the ring and to the reservoir through the ring to offset an imbalance in a laundry load located within the drum.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: April 14, 2015
    Assignee: Whirlpool Corporation
    Inventors: Stephen D. Ostdiek, Vishal Verma
  • Patent number: 8991219
    Abstract: The present invention relates to a washing machine (1) that comprises a tub (2), a cylindrical drum (3) having a rear wall (7) wherein the items to be washed are emplaced, disposed coaxially inside the tub (2), one or more ribs (4) arranged on the inner periphery of the drum (3) and forming protrusions into the drum (3), a shaft (8) housed in the tub (2) that transfers the movement to the drum (3) and a bearing (9) situated at the center of the tub (2) rear wall (7), remaining stationary together with the tub (3), wherein the shaft (8) is housed, extending towards the center of the drum (3) and at least one water feeding line (10) situated inside the bearing (9) having an inlet connected to the mains water supply and an outlet opening outside the bearing (9).
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: March 31, 2015
    Inventor: Levent Hasanreisoglu
  • Patent number: 8991223
    Abstract: A laundry treating appliance having a drum, defining a treating chamber, with a lifter and a balancing system having at least one balancing ring and a reservoir located in the lifter and a liquid supply system fluidly coupled to the reservoir. Liquid may be supplied to the ring and to the reservoir through the ring to offset an imbalance in a laundry load located within the drum.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: March 31, 2015
    Assignee: Whirlpool Corporation
    Inventors: Donald E. Erickson, Farshad Farid, Stephen D. Ostdiek, Vishal Verma, Mark M. Xie
  • Patent number: 8984918
    Abstract: Disclosed herein is a washing machine in which a balancer is directly mounted on a body of an inner tub without a front surface part of the inner tub. The washing machine includes an outer tub to store water, a body formed in a cylindrical shape provided with an opening at one surface thereof and provided in the outer tub, and a balancer connected to an inner diameter part at the opening of the body to reduce unbalance of the body generated during rotation of the body and to reinforce the body.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong Kwon Kim, Kyu Chai Lee, Hong Seok Ko, Sang Up Lee
  • Publication number: 20150068255
    Abstract: A balancer of a washing machine including a balancer housing mounted to a front surface of a drum and having an annular channel therein, a plurality of masses movably disposed along the channel, at least one magnet coupled to the balancer housing so as to restrict the masses from moving along the channel when a revolution per minute value of the drum is within a specific revolution per minute range, and at least one guide groove which is formed on an inner surface of the balancer housing and guides movement of the plural masses when the drum rotates.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 12, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Min Sung KIM, Dong Ha Jung, Jeong Hoon Kang
  • Patent number: 8950219
    Abstract: A washing machine which improves performance of balancers, and a control method thereof. The washing machine includes a drum accommodating laundry and rotated by rotary force transmitted from a drive source, balancer housings mounted on the drum, each of the balancer housings including a disc-shaped channel formed therein, balancing modules movably disposed in the channels of the balancer housings, vibration sensors to sense unbalance applied to the drum during rotation of the drum, position sensors to sense the positions of the balancing modules, and a controller controlling movement of the balancing modules to positions to compensate for the unbalance sensed by the vibration sensors.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: February 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae Seuk Park, Moo Hyung Lee, Il Sung Bae, Sung Jong Kim
  • Patent number: 8943860
    Abstract: A vibration control device for a washing machine is composed of a drum to house laundry, a washing tank to house the drum which is suspended by a chassis of the washing machine, a drum driving motor, an acceleration detecting unit to detect an acceleration in the horizontal direction of the washing tank, a linear actuator fixed to the chassis of the washing machine to generate a driving force in the horizontal direction to the chassis of the washing machine, a force transmitting unit to connect a movable axis of the linear actuator with the washing tank, and a control unit to control the driving force of the linear actuator based on the acceleration detected by the acceleration detecting unit. The force transmitting unit transmits the driving force and absorbs mechanistically relative displacement in the back and forth direction and in the up and down direction.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masaaki Hirai, Akiyuki Yokoyama
  • Publication number: 20150020550
    Abstract: A laundry treatment apparatus includes a casing, an outer tub suspended in the casing, and a pair of horizontal vibration buffering devices arranged to form opposite angles relative each other in the casing, the horizontal vibration buffering devices each coupling a predetermined support disposed outside the outer tub with the outer tub and each having a portion connected with the outer tub to be displaced relative a portion connected with the predetermined support as the outer tub vibrates, where the pair of horizontal vibration buffering devices each provide an attenuation force according to the displacement.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 22, 2015
    Inventors: Insik YU, Youngjun KIM, Youngjong KIM
  • Publication number: 20150020549
    Abstract: A laundry treatment apparatus includes a casing; an outer tub disposed in the casing; and a horizontal vibration buffering device coupling the outer tub with the casing. The horizontal vibration buffering device includes a casing connecting part coupled to the casing; an outer tub connecting part coupled to an side surface of the outer tub and having a displacement relative the casing connecting part as the outer tub vibrates; and a damper providing an attenuation force corresponding to the displacement of the outer tub connecting part relative the casing connecting part, and wherein the casing connecting part is positioned lower side the outer tub connecting part.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 22, 2015
    Inventors: Insik YU, Youngjun KIM, Youngjong KIM
  • Publication number: 20150020548
    Abstract: A laundry treatment apparatus includes a casing; an outer tub; a supporting member coupling the outer tub to the casing; and at least one horizontal vibration buffering device connecting the supporting member with a side surface of the casing. The horizontal vibration buffering device includes a casing connecting part coupled to the casing; a supporting member connecting part coupled to the supporting member, and a damper. The supporting member connecting part has a displacement relative the casing connecting part as the outer tub vibrates. The damper provides an attenuation force corresponding to the displacement of the supporting member connecting part relative the casing connecting part.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 22, 2015
    Inventors: Insik YU, Youngjun KIM, Youngjong KIM
  • Publication number: 20150013077
    Abstract: A washing machine with a balancer to counterbalance unbalanced load produced during rotation of a drum and a control method thereof. The washing machine with a balancer to counterbalance unbalanced load produced during rotation of a drum perform a ball distributing cycle of seating masses in a groove in the balancer before rotation of the drum possibly producing unbalance as in the spin-drying cycle begins to efficiently maintain balance of the drum, and a laundry untangling cycle of evenly distributing the laundry in the drum. Accordingly, vibration and noise may be reduced during the spin-drying cycle. In addition, in retrying the spin-drying, the ball distributing cycle is restricted based on the rate of rotation of the motor at the moment at which unbalance is sensed. Thereby, delay in cycle time in retrying the spin-drying cycle may be prevented.
    Type: Application
    Filed: May 20, 2014
    Publication date: January 15, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Ha JUNG, Jeong Hoon Kang, Min Sung Kim
  • Patent number: 8893341
    Abstract: Disclosed are a washing machine and a method of controlling spin-drying of the washing machine. The method changes the acceleration gradient of the drum passing a resonance point, i.e., the resonance point passing gradient of the drum, when the imbalance of the laundry due to the excessive vibration of the tub is sensed when passing a resonance point region (generally within 100 RPM, approximately 50˜80 RPM, after the entry into the spin-drying cycle) in the spin-drying cycle. Thus the position of the balancer is changed according to the imbalance of the laundry.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: November 25, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chan Woo Park, Sang Ho Seo, Seok In Hong, Jae Won Lee, Do Yeon Kim, Dong Woo Shin
  • Publication number: 20140331720
    Abstract: A drum type washing machine includes a housing; a spin tub rotatable by a driving motor through a rotating shaft; a balancer installed at a rear section of the spin tub; a shaft flange including a hub section to fixedly install the rotating shaft and a plurality of arm sections extending radially outward from the hub section and mounted to the spin tub so as to uniformly transfer the rotational force to the spin tub; and a rear cover provided on the rear section of the spin tub. The balancer is disposed adjacent to the rear cover and the shaft flange such that the first annular-shaped member contacts the shaft flange and the second annular-shaped member contacts the rear cover.
    Type: Application
    Filed: July 28, 2014
    Publication date: November 13, 2014
    Inventors: Ja Young KIM, Ito MICHIAKI, Doo Young RYU, Myung Sun KANG
  • Publication number: 20140317857
    Abstract: Laundry treating appliances and methods of controlling the same to balance small loads are disclosed. An example method of operating a laundry treating appliance having a rotating drum defining a treating chamber in which laundry is received for treatment according to at least one cycle of operation, and at least one balancing ring to counteract an imbalance of the rotating drum includes determining whether a small load is present in the treating chamber, substantially aligning the small load and a moveable mass of the balancing ring(s) when the drum is substantially stationary, and accelerating rotation of the drum based on a viscosity of fluid in the balancing ring(s) to position the small load substantially opposite the moveable mass.
    Type: Application
    Filed: April 24, 2013
    Publication date: October 30, 2014
    Applicant: Whirlpool Corporation
    Inventors: CHRISTOPHER L. BORLIN, CHRISTOPHER H. MATULIS
  • Patent number: 8857224
    Abstract: A washing machine is provided having at least one balancer and a method of manufacturing a balancer thereof is further provided, the method and machine capable of reducing a manufacturing cost and an assembly time, and allowing the balancer assembled to a spin tub to be easily replaced with a new balancer. The balancer applied to the washing machine and the method of manufacturing the balancer of the washing machine are adapted such that a pipe is formed in an annular shape and is assembled to a spin tub, so that a manufacturing cost and an assembly time can be reduced to improve mass productivity. Further, when the balancer is determined to fail after being assembled to the spin tub, the balancer can be rapidly and conveniently replaced with a new balancer, so that material costs can be reduced.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ja Young Kim, Ito Michiaki, Doo Young Ryu, Myung Sun Kang
  • Patent number: 8820124
    Abstract: A drum type washing machine including a balancer capable of rapidly reducing vibration of a spin tub. The drum type washing machine includes a spin tub which is rotated by receiving rotational force from a driving motor through a rotating shaft, a rear balancer having an annular shape and being coupled to the spin tub, and a shaft flange provided at a center portion thereof with the rotating shaft and coupled to the spin tub so as to uniformly transfer the rotational force to the spin tub. The rear balancer is supported on a rear surface of a rear cover by the shaft flange. Thus, the balls accommodated in the balancer are prevented from moving out of the balancer, even if the balancer is broken due to long-period use.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: September 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ja Young Kim, Ito Michaki, Doo Young Ryu, Myung Sun Kang
  • Publication number: 20140223969
    Abstract: A laundry treatment apparatus including a rotatable drum in which laundry is stored, at least three balancers mounted to the drum so as to be spaced apart from one another by the same angle around a rotation center of the drum. Liquid is introduced into and discharged from the balancers via a feeder supplying the liquid and a flow path structure mounted to the drum to guide liquid supplied from the feeder to the balancer located in a direction for removal of unbalance of the drum.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 14, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Keunjoo KIM, Seungchul PARK, Jongryong KIM
  • Patent number: 8800327
    Abstract: A drum type washing machine includes an annular recess formed in the front cover such that the annular recess is located immediately adjacent to a wall of the drum body; and a ball balancer including an annular-shaped racer having a closed internal space in which a plurality of balls and viscous oil are accommodated. The annular-shaped racer includes first and second injection molded members joined to each other to form the closed internal space. The ball balancer is supported by the annular recess formed in the front cover of the drum, and the ball balancer is configured to be attachable to the drum with the viscous oil and the plurality of balls already in the ball balancer.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: August 12, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ja Young Kim, Doo Young Ryu
  • Publication number: 20140208807
    Abstract: A washing machine having a balancer to offset unbalanced load generated during rotation of a drum. The washing machine includes a cabinet, a drum rotatably disposed in the cabinet, and a balancer mounted to the drum to offset unbalanced load generated in the drum during rotation of the drum. The balancer includes a balancer housing having an annular channel defined therein, at least one mass movably disposed in the channel, a magnet provided at one side of the balancer housing to restrain the mass, and a magnet case to receive the magnet.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 31, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Jin CHO, Doo Young Ryu, Won Young Jung, Jeong Hoon Kang
  • Publication number: 20140208805
    Abstract: A balancer includes a balancer housing having an annular channel defined therein, at least one mass movably disposed in the channel, at least one magnet coupled to one side of the balancer housing to restrain movement of the mass along the channel when rotational speed of a drum of the washing machine is within a predetermined range, and an inclined sidewall formed at an inner surface of the balancer housing to support the mass in a direction resisting centrifugal force applied to the mass during rotation of the drum.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 31, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Ha JUNG, Jeong Hoon Kang, Min Sung Kim, Doo Young Ryu
  • Publication number: 20140208809
    Abstract: A balancer includes a balancer housing having an annular channel defined therein, at least one mass movably disposed in the channel, and at least one magnet coupled to one side of the balancer housing to restrain movement of the mass along the channel when rotational speed of a drum of the washing machine is within a predetermined range. The magnet includes a plurality of unit magnets arranged in a circumferential direction of the balancer housing.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 31, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Hoon KANG, Min Sung Kim, Dong Ha Jung, Doo Young Ryu
  • Publication number: 20140208808
    Abstract: A balancer includes a balancer housing coupled to a drum of a washing machine, the balancer housing having an annular channel defined therein, at least one mass movably disposed in the channel, at least one magnet to restrain movement of the mass along the channel when rotational speed of the drum is within a predetermined range, and at least one magnet fixing member coupled to an outside of the balancer housing to receive and fix the magnet.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 31, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Doo Young Ryu, Won Young Jung, Young Jin Cho, Jeong Hoon Kang
  • Publication number: 20140208806
    Abstract: A balancer includes a balancer housing coupled to a drum of a washing machine, the balancer housing having an annular channel defined therein, at least one mass movably disposed in the channel, at least one magnet to restrain movement of the mass along the channel when rotational speed of the drum is within a predetermined range, and at least one magnet fixing rib formed at one side of the balancer housing to fix the magnet.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 31, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Doo Young RYU, Won Young JUNG, Young Jin CHO, Jeong Hoon KANG
  • Patent number: 8746016
    Abstract: A suspension (1) of a washing machine has a mechanical assembly resting on the bottom of the cabinet (3) by means of a lower cushion including plates (5 and 7) and shock absorbers (6) and a liquid containing casing (4). The suspension system (1) is intended to absorb the movement of the mechanical (wash group) assembly during a centrifugal spin, reducing the transmissibility of forces/movements to the external cabinet (3), while the liquid containing casing provides a cost-effective counterbalance within the system.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: June 10, 2014
    Assignee: Electrolux do Brasil SA
    Inventors: Alvaro Volpato Junior, Antonio Fernando Da Cunha, Felipe Augusto Scheer
  • Patent number: 8739579
    Abstract: A ball balancer and a laundry apparatus having the same are disclosed. A ball balancer includes a circular housing having motion space formed therein, at least two partition members spaced apart a predetermined distance along the motion space of the housing, the partition members partitioning the motion space into at least two spaces, a plurality of ball members movable within the partitioned spaces of the motion space, and viscous fluid filled in the motion space. Such the ball balancer may reduce noise and vibration of the laundry apparatus having the same.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: June 3, 2014
    Assignee: LG Electronics Inc.
    Inventors: Chang Woo Son, Min Gu Kang
  • Patent number: 8713977
    Abstract: A laundry treating appliance having a drum, defining a treating chamber, with a lifter and a balancing system having at least one balancing ring and a reservoir located in the lifter and a liquid supply system fluidly coupled to the reservoir. Liquid may be supplied to the ring and to the reservoir through the ring to offset an imbalance in a laundry load located within the drum.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: May 6, 2014
    Assignee: Whirlpool Corporation
    Inventor: Vishal Verma