Patents Assigned to Woongjin Coway Co., Ltd.
  • Patent number: 9908159
    Abstract: A washing method of a water treatment apparatus is provided. The washing method includes a wash water inflow operation in which wash water flows into circulation members, and a circulation washing operation in which a circulation modulation circulates the wash water through passages of the water treatment apparatus.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: March 6, 2018
    Assignee: Woongjin Coway Co., Ltd
    Inventors: Jung-Hwan Lee, Jin-Seong Ka, Ho-Dong Nam, Jong-Min Kim
  • Patent number: 9897374
    Abstract: There is provided a cold water tank including: a first tank having an inlet pipe through which water to be cooled is introduced; and a second tank provided in the interior of the first tank such that water of the first tank can be introduced thereinto, having an evaporator included in a refrigerating cycle to cool the introduced water, and having an outlet pipe through which cooled water flows. Although water is introduced at high pressure, the introduced water can remain in the cold water tank for a period of time required for being cooled, and although water is introduced at high pressure, the introduced water can be in a stable state in the cold water tank. Thus, water can be cooled with its inflow pressure maintained, and the degree of freedom of a faucet or cock for allowing cold water to flow therethrough can be improved in its height.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: February 20, 2018
    Assignee: Woongjin Coway Co., Ltd
    Inventors: Hyun-Young Kim, Woong Jung, Hyun-Hee Lee, Hwan-Seok Choi
  • Patent number: 9604264
    Abstract: A washing device for a water treatment apparatus is provided. The washing device includes circulation members connected to passages of the water treatment apparatus to circulate wash water through the passages of the water treatment apparatus, a circulation module connected to the circulation members for circulating the wash water through the passages of the water treatment apparatus, with the circulation members thereby washing the passages of the water treatment apparatus, a drainpipe connected to the circulation members, a passage switching unit connected to a portion where the circulation members are coupled to the drainpipe to switch passage of the wash water, and a circulation pump connected to the circulation members to selectively circulate the wash water in the connection pipes through the drainpipe or the passages of the water treatment apparatus.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: March 28, 2017
    Assignee: Woongjin Coway Co., Ltd
    Inventors: Jung-Hwan Lee, Jin-Seong Ka, Ho-Dong Nam, Jong-Min Kim
  • Patent number: 9568228
    Abstract: There is provided an ice making method capable of forming ice to an intended level although a sensing unit configured to sense whether or not a formation of ice has reached the intended level malfunctions. The ice making method includes: an ice making initiation step S100 of forming ice by an ice formation unit; an ice release time determining step S200 of determining a point in time at which ice is to be released in consideration of a signal from a detection unit for detecting whether the formation of ice has reached an intended level and an ice making lapse time which has lapsed after the formation of ice was initiated by the ice formation unit; and an ice releasing step S300 of releasing the formed ice when a point in time at which ice is to be released is determined in the ice releasing time determining step.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: February 14, 2017
    Assignee: Woongjin Coway Co., Ltd
    Inventors: Jin-Kyu Joung, You-Shin Kim, Chul-Sun Dan
  • Patent number: 9556042
    Abstract: A water pressure regenerated type water softener including: a timer control valve having a valve control unit rotated by a timer spring and into which raw water is supplied; a plurality of conduits into which the raw water selectively flows under the control of the timer control valve; a regeneration tank communicating with a regeneration tank inlet conduit of the conduits; and a resin tank unit receiving regeneration water flowing from the regeneration tank and containing an ion exchange resin therein. The water softener can be operated in one of stop mode, soft water mode, raw water mode and regeneration mode under the control of the valve control unit. When regeneration mode is selected, the valve control unit rotates to stop mode by the timer spring after a preset amount of time has elapsed.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: January 31, 2017
    Assignee: WOONGJIN COWAY CO., LTD.
    Inventors: Sung Hun Yoon, Joong Keun An, Won Tae Kim, Chun Ho Park
  • Patent number: 9541320
    Abstract: There is provided an ice making method capable of reducing the required number of gyrations of a gyration member used for making ice to have a high level of transparency and determining a point in time at which ice is to be released. The ice making method for making highly transparent ice by revolving a gyration member provided in a tray member in which water is put such that a plurality of dipping members, on which ice is generated or from which generated ice is released, are immersed, wherein a method for driving the gyration member in making ice to be supplied to a user and a method for driving the gyration member in making ice to be used for generating cold water are different in order to reduce the number of gyrations of the gyration member.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: January 10, 2017
    Assignee: Woongjin Coway Co., Ltd
    Inventors: Jin-Kyu Joung, You-Shin Kim, Chul-Sun Dan
  • Patent number: 9528738
    Abstract: The disclosure includes a water tray member receiving raw water for ice-making from a water tank, an ice making unit cooling the raw water received in the water tray member and forming ice, a heating unit heating the raw water received in the water tray member, and a control unit controlling an operation of the heating unit such that the raw water received in the water tray member is heated before the ice making unit cools the raw water in the water tray member. According to the ice maker, the temperature of the raw water received in an ice-making water tray is raised to a preset temperature at the initial stage of an ice making process, thereby preventing the formation of an opaque layer in the central portion of ice.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: December 27, 2016
    Assignee: Woongjin Coway Co., Ltd
    Inventor: Se-Joo Kim
  • Patent number: 9500399
    Abstract: A water purifier with an ice maker is provided that may include an ice making part (200) having an evaporator (210) and a circulation cooling part (300) that circulates water stored in a cold water tank (310) to the evaporator (210) so that the water stored in the cold water tank (310) is cooled by performing a heat exchange with refrigerant flowing in the evaporator (210). With the configurations as described above, it is possible to simultaneously make ice and cool water using a single evaporator. Therefore, there is no need to make separate ice so as to cool water, thereby making it possible to enhance the energy efficiency of the water purifier with an ice maker.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: November 22, 2016
    Assignee: Woongjin Coway Co., Ltd
    Inventors: Jin Hwan Noh, Hee-Do Jung
  • Patent number: 9488385
    Abstract: A heater includes: a power source for supplying power; a heating section for receiving power from the power source and converting the received power into heat energy; an electrical leakage breaker circuit for cutting off a power transfer from the power source to the heating section; and a control section for receiving leaked current information from the electrical leakage breaker circuit and operating the electrical leakage breaker circuit when the leaked current amount exceeds a preset amount or electrical leakage breaker state information is stored, wherein when the power transfer is cut off, the control section stores the electrical leakage breaker state information.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: November 8, 2016
    Assignee: Woongjin Coway Co., Ltd
    Inventor: Tae-Kyung Kang
  • Patent number: 9470447
    Abstract: An ice maker and a water purifier capable of making ice using two water trays. The water purifier having an ice maker includes a water tray member comprising an ice-making water tray holding ice-making raw water to make ice using an ice-making unit, and an auxiliary water tray holding ice-making raw water remaining in the ice-making water tray in the course of cooling the ice-making raw water by means of the ice-making unit and removing the ice-making raw water from the ice-making water tray; an ice reservoir storing ice made in the ice-making unit; a cold water storage tank cooling water held therein using the ice made in the ice-making unit; and a guide member guiding the ice made in the ice-making unit so that the ice is selectively fed to either the ice reservoir or the cold water storage tank.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: October 18, 2016
    Assignee: WOONGJIN COWAY CO. LTD.
    Inventors: Jong-Han Lee, Jung-Chul Park, Hee-Do Jung, Hyun-Woo Lee
  • Patent number: 9382137
    Abstract: There are provided a flow path control device of a toilet bidet having a simpler connection structure of tubes and smaller number of connection parts of the tubes, and a toilet bidet including the flow path control device.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: July 5, 2016
    Assignee: WOONGJIN COWAY CO., LTD.
    Inventors: Ji-Hye Jeong, Soo-Young Lee
  • Patent number: 9353724
    Abstract: A generator includes: an upper housing and a lower housing; a water inlet and a water outlet provided in the upper housing; an impeller rotatably fixed inside the upper housing; a magnet provided in the lower housing, connected to a rotating shaft of the impeller, and rotated integrally with the impeller; and a bobbin positioned outside the magnet. A bearing through which the rotating shaft passes and a communication hole connecting a space for housing the impeller to a space for housing the magnet are disposed in an intermediate surface between the space for housing the impeller and the space for housing the magnet.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: May 31, 2016
    Assignee: Woongjin Coway Co., Ltd
    Inventors: Man-Uk Park, Sung-Worl Jin, Young-Sang Yun, Ji-Hye Jeong, In-Seok Seo, Ki-Chul Kim, Joung-Ho Son
  • Patent number: 9279593
    Abstract: Disclosed is an air purifier able to maintain the normal state of drive of a disk-shaped humidification filter by controlling the state of rotation of the humidification filter. The air purifier can maintain the normal state of drive of the humidification filter by using a stepping motor and the control unit in order to vary the state of rotation of the humidification filter and thereby remove extraneous material when the humidification filter is rotating abnormally due to extraneous material.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: March 8, 2016
    Assignee: Woongjin Coway Co., Ltd
    Inventor: Jin Kyu Joung
  • Patent number: 9248409
    Abstract: Provided is a hollow-fiber membrane module comprising a submodule inside which raw water is circulated and water treatment is carried out, and a piping unit which is connected to the submodule and through which the raw water and air and treated water flow, such that flow rates can be increased and energy consumption can be minimized through the circulation of a fluid.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: February 2, 2016
    Assignee: Woongjin Coway, Co. Ltd.
    Inventors: Soo-Hong Noh, Oh-Sung Kwon, Young-Keun Choi, Chan-Sik Kim, Seung-Il Lee, Woo-Seung Choi
  • Patent number: 9139451
    Abstract: A washing device for a water treatment apparatus is provided. The washing device includes circulation members and a circulation module. The circulation members are connected to passages of the water treatment apparatus to circulate wash water through the passages of the water treatment apparatus. The circulation module is connected to the circulation members for circulating the wash water through the passages of the water treatment apparatus, with the circulation members thereby washing the passages of the water treatment apparatus.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: September 22, 2015
    Assignee: Woongjin Coway Co., Ltd
    Inventors: Jung-Hwan Lee, Jin-Seong Ka, Ho-Dong Nam, Jong-Min Kim
  • Patent number: 9127852
    Abstract: Disclosed is an air purifier able to maintain the normal state of drive of a disk-shaped humidification filter by controlling the state of rotation of the humidification filter. The air purifier can maintain the normal state of drive of the humidification filter by using a stepping motor and the control unit in order to vary the state of rotation of the humidification filter and thereby remove extraneous material when the humidification filter is rotating abnormally due to extraneous material.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: September 8, 2015
    Assignee: Woongjin Coway Co., Ltd
    Inventor: Jin-Kyu Joung
  • Patent number: D891600
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: July 28, 2020
    Assignee: WOONGJIN COWAY CO., LTD.
    Inventor: Ga Hee Kim
  • Patent number: D896345
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: September 15, 2020
    Assignee: WOONGJIN COWAY CO., LTD.
    Inventor: Karam Shin
  • Patent number: D908189
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: January 19, 2021
    Assignee: Woongjin Coway Co., Ltd.
    Inventor: Karam Shin
  • Patent number: D909557
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: February 2, 2021
    Assignee: WOONGJIN COWAY CO., LTD.
    Inventors: Jung Jae Jeon, Su Min Shin