Patents Assigned to Kyungdong Navien Co., Ltd
  • Publication number: 20150056564
    Abstract: The present invention relates to a dual venturi for a combustion apparatus, and more particularly, to a dual venturi for a combustion apparatus that is capable of effectively controlling calorific power since the amount of gas for a burner provided in a water heater and the amount of supplied air are controlled in two phases, and a motor and a damper are coupled to each other so that the damper opens or blocks inlets for secondary air and the gas at the same time that the damper is rotated by the driving of the motor.
    Type: Application
    Filed: January 18, 2013
    Publication date: February 26, 2015
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventor: Jeong Gi Yu
  • Publication number: 20150050608
    Abstract: Provided is a gas-air mixing device for a combustor which effectively controls the amount of gas and air supplied to a burner provided in a combustor, such as a boiler or a water heater, thus improving the turn-down ratio which leads to increased convenience for using hot water and heat and enhanced durability of the burner. The gas-air mixing device for a combustor comprises: a housing, connected on one side to a turbo fan; a discharge part disposed on one side of the housing and in contact with the turbo fan; first and second air supply parts, provided on the other side of the discharge part and separated by a first partition; first and second gas supply parts, separated by a second partition; and an opening/closing means for controlling the flow of gas and air by opening or blocking the second air supply part and the second gas supply part.
    Type: Application
    Filed: January 16, 2013
    Publication date: February 19, 2015
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventors: Myoung Gee Min, Dae Hyun Kim
  • Patent number: 8944013
    Abstract: A pipe connecting structure of a water heater. Individual parts in the water heater are integrally coupled with a pipe body, which is injection-molded, provides paths of tap water and hot water, reduces the number of pipes connecting the individual parts, and simplifies the connection structure of the pipes. The pipe connecting structure of the water heater includes a tap water inlet pipe connected from a tap water inlet to a heat exchanger; a hot water supply pipe connected from the heat exchanger to a hot water outlet; a flow sensor for measuring the flow rate of the tap water introduced via the tap water inlet; and a flow control valve for controlling the flow rate of the hot water discharged via the hot water outlet. The pipe body connects and is integral with the tap water inlet, the tap water inlet pipe, the hot water supply pipe, and the hot water outlet.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: February 3, 2015
    Assignee: Kyungdong Navien Co., Ltd.
    Inventor: Tae-Sik Min
  • Publication number: 20150000614
    Abstract: Provided is a gas-air mixing device for a combustion apparatus which effectively controls the amount of gas and air supplied to a burner so as to improve the turn-down ratio, thereby improving burner reliability. The gas-air mixing device includes: a housing having one side coupled to a turbo fan; an air supplying unit provided on the other side of the housing, and configured of a first air supply part and a second air supply part; a gas supplying unit configured of a first gas supply part and a second gas supply part; and an opening/closing means which closes the second air supply part and the second gas supply part when a small amount of heat is needed to block the flow of air and gas, and opens the second air supply part and the second gas supply part when a large amount of heat is needed.
    Type: Application
    Filed: March 3, 2013
    Publication date: January 1, 2015
    Applicant: KYUNGDONG NAVIEN CO., LTD
    Inventor: Jun Kyu Park
  • Publication number: 20140262176
    Abstract: The present invention is directed to providing a hot water heat exchanger which has a simple piping structure and minimizes a flow passage length therein, thereby minimizing flow resistance.
    Type: Application
    Filed: November 13, 2012
    Publication date: September 18, 2014
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventor: Tae-Sik Min
  • Publication number: 20130291809
    Abstract: The present invention relates to a domestic combined heat and power system, and the domestic combined heat and power system includes a power unit, a heat-storage tank which receives waste heat of the power unit and stores heat in direct water, and a main heat exchanger which is connected to the heat-storage tank and is heated by a burner so as to use the water as hot water or heating water, in which a waste-heat heat exchanger filled with a heat-transfer medium is installed between the power unit and the heat-storage tank such that a waste-heat pipe of the power unit is arranged in the form of a coil at one side inside the waste-heat heat exchanger, and a heat-storage pipe of the heat-storage tank is arranged in the form of a coil at the other side, so that waste heat of the power unit is indirectly heat exchanged to the heat-storage tank through the heat-transfer medium; in which hot-water piping coming out from the heat-storage tank is arranged so as to be indirectly heat exchanged via a hot-water heat exch
    Type: Application
    Filed: July 19, 2011
    Publication date: November 7, 2013
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventor: Chang Kwon Park
  • Patent number: 8573161
    Abstract: Disclosed is a hot water supplying apparatus which has a dual pipe capable of transferring heat energy of hot water, which is heated by heat of combustion of a burner and flows in pipe of a heat exchanger, to an inner pipe in which cold water is introduced, thereby inhibiting the condensation of moisture so as to prevent the corrosion of parts in the hot water supplying apparatus. The hot water supplying apparatus, comprises: a burner for supplying heat; a water inlet pipe for supplying cold water; a heat exchanging pipe formed with a dual pipe including an outer pipe for directly receiving combustion heat of the burner, and an inner pipe formed in the outer pipe, for allowing the cold water, which is introduced through the water inlet pipe, to be heated while passing through the inner pipe; and a water outlet pipe for discharging the heated water from the heat exchanging pipe.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: November 5, 2013
    Assignee: Kyungdong Navien Co., Ltd.
    Inventor: Tae-Sik Min
  • Publication number: 20130260325
    Abstract: A gas boiler and a method of adjusting output of the gas boiler by adjusting mixture ratio of air and gas for combustion in proportion to an output value of the boiler, and continuously changing the mixture regardless of the boiler output. The gas boiler includes a ventilator, a gas valve, a burner, a combustion chamber, a heat exchanger, and an exhaust gas hood. The inlet of the ventilator includes an output adjusting device having an air inlet; an air adjustment valve; a gas outlet; a gas adjustment valve that adjusts the gas passing through the gas outlet; and a valve driving unit that drives the air adjustment valve and the gas adjustment valve. Output of the burner is continuously adjusted by adjusting distance between the air adjustment valve and the gas adjustment valve, and distance between the air inlet and the gas outlet.
    Type: Application
    Filed: August 19, 2011
    Publication date: October 3, 2013
    Applicant: Kyungdong Navien Co., Ltd.
    Inventor: Tae-Sik Min
  • Publication number: 20130199318
    Abstract: The present invention relates to an actuator assembly, and provides an actuator assembly comprising: an upper case; a lower case; an actuator interposed between the upper and the lower cases; a cam coupled to the actuator; and a shutter connected to the cam, in which the cam includes protrusions and recesses, which are alternately formed at an interval of 90°, a hook is provided of which one end is disposed so as to alternately come into contact with the protrusions and the recesses according to a rotation of the cam, the other end is coupled to a spring, a longitudinal middle protrudes so as to form a touch part, and a hook shaft is coupled to a portion between the touch part and the other end of the hook, and a single microswitch is further provided at an upper side of the cam in order to stop an operation of the actuator in accordance with contact with the touch part.
    Type: Application
    Filed: March 20, 2011
    Publication date: August 8, 2013
    Applicant: Kyungdong Navien Co., Ltd.
    Inventor: Ki Seong Lee
  • Publication number: 20130125838
    Abstract: A latent heat exchanger of a condensing boiler, in which the condensing boiler includes a sensible heat exchanger absorbing combustion sensible heat generated by a burner, a latent heat exchanger absorbing latent heat of water vapor contained in a combustion product heat-exchanged by the sensible heat exchanger, an exhaust hood discharging the combustion product flowing through the latent heat exchanger, and a condensed water outlet discharging condensed water generated from the latent heat exchanger. In the latent heat exchanger the combustion product burnt by the burner flows through the sensible heat exchanger, is vertically raised toward the latent heat exchanger, is slantingly lowered in an outward direction at an acute angle from a horizontal plane, is heat-exchanged by the latent heat exchanger, is vertically raised, and is discharged to the exhaust hood.
    Type: Application
    Filed: April 22, 2011
    Publication date: May 23, 2013
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventor: Tae-Sik Min
  • Publication number: 20130062043
    Abstract: A heat exchanger applied to a boiler that can improve heat transfer efficiency by reducing the distance between the heat exchange pipes while making a long heating water passage through heat exchange pipes, which can be easily manufactured. Additionally, the heat exchanger includes a heat exchange device, first and second subsidiary plates, and first and second end plates. The heat exchange device includes a plurality of heat exchange pipe units through which heating water passes and which are spaced apart from each other at regular intervals. The heat exchange pipe units are provided between a heating water inlet and a heating water outlet, and are formed of pipes having a rectangular cross-section of which a side coming in contact with the combustion gas has a width large than the height.
    Type: Application
    Filed: October 18, 2012
    Publication date: March 14, 2013
    Applicant: Kyungdong Navien Co., Ltd.
    Inventor: Kyungdong Navien Co., Ltd.
  • Publication number: 20130059258
    Abstract: A board-plank premixing burner port arrangement which increases durability by preventing a large force from being applied to a burner-fixing structure despite accumulated thermal expansion caused by red heat on a burner surface. A burner body unit includes partially cut and stacked plates. The plates form a gas mixture passage and a burner port, are disposed such that cut parts of the neighboring plates intersect one another. The board-plank premixing burner port arrangement has increased combustion efficiency by reducing burner port deformation, and is easily manufactured at a low cost through a simplified installation structure of the burner port.
    Type: Application
    Filed: April 22, 2011
    Publication date: March 7, 2013
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventor: Tae-Sik Min
  • Patent number: 8375898
    Abstract: A heat exchanger of a non-condensing storage type boiler for preventing condensation is provided. The heat exchanger include a heating water outflow port installed on an upper portion of the boiler, a heating water inflow port installed lower than the heating water outflow port, and an internal pipe extending spirally from the heating water inflow port and being installed in a water tube of the boiler. The internal pipe is connected to an extension pipe that extends through a re-entry outlet passing through a wall of the boiler to be connected with a re-entry inlet.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: February 19, 2013
    Assignee: Kyungdong Navien Co., Ltd.
    Inventor: Tae-Sik Min
  • Publication number: 20120305105
    Abstract: A hot-water supply heat exchanger having a mixing valve and a mixing valve integrated adopter are provided to facilitate control of hot water temperature with a simplified pipe structure. A hot-water supply heat exchanger comprises a heat exchange part (100), a heating water inlet (212), a heating water outlet (214), a cold water inlet (222), a hot water outlet (224), and a mixing valve (230). The heat exchange part allows heat exchange between hot water provided from a main heat exchanger (20) with cold water. The heating water inlet draws hot water into the heat exchanger. The to heating water outlet discharges the hot water heat-exchanged by the heat exchanger. The cold water inlet draws the cold water into the heat exchange part. The hot water outlet discharges the cold water that is heat-exchanged with heating water in the heat exchange part. The mixing valve mixes the hot water discharged through the hot water outlet with cold water provided from the cold water inlet.
    Type: Application
    Filed: September 8, 2010
    Publication date: December 6, 2012
    Applicant: Kyungdong Navien Co., Ltd
    Inventor: Tae-Sik Min
  • Patent number: 8291869
    Abstract: A method and an apparatus are provided for preventing coagulation in an exhaust pipe of a boiler is provided. The method includes operating the boiler and executing a combustion stroke, determining if an ambient air temperature measured by an ambient air temperature detecting sensor is equal to or lower than a first temperature, shifting a 3-way valve to a hot-water location if the measured ambient air temperature is equal to or lower than the first temperature, executing an extinction stroke of a burner if the temperature of space heating water reaches a second temperature, and operating a circulation pump and a blower to exchange heat in a heat exchanger and to discharge warm air through an exhaust pipe, thereby preventing coagulation in the exhaust pipe of the boiler.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: October 23, 2012
    Assignee: Kyungdong Navien Co., Ltd.
    Inventor: Tae Sik Min
  • Publication number: 20120244483
    Abstract: A gas burner for simplifying assembling and manufacturing of a burner flame hole unit by overlapping plates. Portions of the plates are cut so that the cut portions communicate with each other. Flame holes and mixture channels for a mixture of gas and air pass through a gap between the cut portions. The cut portions overlap and communicate with each other between adjacent plates, thereby forming flame holes and channels for flow of the mixture of gas and air through gaps between the cut portions.
    Type: Application
    Filed: November 11, 2010
    Publication date: September 27, 2012
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventor: Tae-Sik Min
  • Publication number: 20120227681
    Abstract: A pipe connecting structure of a water heater. Individual parts in the water heater are integrally coupled with a pipe body, which is injection-molded, provides paths of tap water and hot water, reduces the number of pipes connecting the individual parts, and simplifies the connection structure of the pipes. The pipe connecting structure of the water heater includes a tap water inlet pipe connected from a tap water inlet to a heat exchanger; a hot water supply pipe connected from the heat exchanger to a hot water outlet; a flow sensor for measuring the flow rate of the tap water introduced via the tap water inlet; and a flow control valve for controlling the flow rate of the hot water discharged via the hot water outlet. The pipe body connects and is integral with the tap water inlet, the tap water inlet pipe, the hot water supply pipe, and the hot water outlet.
    Type: Application
    Filed: November 11, 2010
    Publication date: September 13, 2012
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventor: Tae-Sik Min
  • Publication number: 20120225393
    Abstract: The present invention relates to a gas burner in which a burner body and a side plate are assembled together without a welding process, to thereby simplify manufacturing procedures and reduce manufacturing costs. To accomplish this, the gas burner of the present invention includes a plurality of burner units (110), each of which has a burner body (111) with a main flame being formed at the top thereof, a side plate (112) which forms auxiliary flame holes (116) in the spaces between both side surfaces of the burner body (111) and the side plate (112), and a plurality of supports (113, 114) protruding from the side plate (112). Both ends of each of the burner units (110) are supported by first and second brackets (200a, 200b), respectively. The supports (113, 114) formed at the side plate (112) of the burner unit are brought into contact with and are supported by supports (123, 124) formed at a side plate (122) of an adjacent burner unit (120).
    Type: Application
    Filed: July 21, 2010
    Publication date: September 6, 2012
    Applicant: KYUNGDONG NAVIEN CO., LTD.
    Inventors: Moung-Gee Min, Jae-Myung Joo
  • Patent number: D683001
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: May 21, 2013
    Assignee: Kyungdong Navien Co., Ltd.
    Inventor: Chi-Young Lee
  • Patent number: D687134
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: July 30, 2013
    Assignee: Kyungdong Navien Co., Ltd.
    Inventor: Chi-Young Lee