Patents by Inventor Wan-Sung Pae
Wan-Sung Pae has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11885346Abstract: The present invention relates to a water pump including a lower casing in which a rotor accommodating part is formed to protrude downwardly and a lower bearing mounting part is formed at a lower end of an inner portion; an upper casing in which an inlet part introducing a fluid and an outlet part discharging the fluid are formed and an upper bearing mounting part is formed to extend from a lower end of the inlet part toward the impeller accommodating space; an impeller rotatably provided in the impeller accommodating space; and a rotor provided in the rotor accommodating space of the lower casing and coupled to the impeller. A fluid may smoothly flow toward an introduction side of the impeller, and thus, a pressure drop of the fluid and an unstable flow of the fluid may be prevented to improve performance.Type: GrantFiled: June 8, 2022Date of Patent: January 30, 2024Assignee: COAVISInventors: Wan Sung Pae, Hyun Tae Lee, Joon Seup Kim
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Patent number: 11873819Abstract: The present invention relates to an impeller for an electric water pump capable of preventing a cavitation from occurring in the impeller according to the related art and improving a flow restriction in the impeller by changing an internal structure of the impeller in consideration of a flow of a coolant introduced into the impeller. The impeller for an electric water pump, includes: an inlet member formed in a pipe shape extending to allow a fluid to be introduced; an upper member connected to one end of the inlet member, extending to one side, and having an inner diameter increasing toward the one side; an extension member outwardly extending from one end of the upper member; and a lower impeller member coupled to an upper impeller member formed by the inlet member, the upper member, and the extension member to form a discharge space from which the fluid is discharged.Type: GrantFiled: October 15, 2019Date of Patent: January 16, 2024Assignee: COAVISInventors: Wan Sung Pae, Byeung Jin Kim, Joon Seup Kim
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Patent number: 11848588Abstract: A motor integrated with a control unit having an efficiency in cooling by allowing the heat generated by the motor to be radiated away from the motor. Heat generated from the control unit is separately radiated away from the control unit. The motor integrated with the control unit can be utilized in water pumps.Type: GrantFiled: September 15, 2020Date of Patent: December 19, 2023Assignee: COAVISInventors: Wan Sung Pae, Dong Heon Mo, Joon Seup Kim
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Publication number: 20220403852Abstract: The present invention relates to a water pump including a lower casing in which a rotor accommodating part is formed to protrude downwardly and a lower bearing mounting part is formed at a lower end of an inner portion; an upper casing in which an inlet part introducing a fluid and an outlet part discharging the fluid are formed and an upper bearing mounting part is formed to extend from a lower end of the inlet part toward the impeller accommodating space; an impeller rotatably provided in the impeller accommodating space; and a rotor provided in the rotor accommodating space of the lower casing and coupled to the impeller. A fluid may smoothly flow toward an introduction side of the impeller, and thus, a pressure drop of the fluid and an unstable flow of the fluid may be prevented to improve performance.Type: ApplicationFiled: June 8, 2022Publication date: December 22, 2022Inventors: Wan Sung Pae, Hyun Tae Lee, Joon Seup Kim
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Patent number: 11353042Abstract: Provided is an electric water pump in which a portion of a fluid discharged from the vicinity of an outer peripheral edge of an impeller flows between the impeller and a lower casing, flows between a rotor and the lower casing, flows between a shaft and the rotor along a channel formed inside the rotor, and then flows to an inlet side of the impeller such that the fluid circulates outside and inside the rotor, and thus, foreign matters contained in the fluid do not accumulate in an accommodation space between the rotor and the lower casing, and thus, efficiency and durability of a motor can be improved.Type: GrantFiled: December 15, 2020Date of Patent: June 7, 2022Assignee: COAVISInventors: Hyun Tae Lee, Wan Sung Pae, Woo Keun Lee
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Publication number: 20220163050Abstract: Provided is an electric water pump in which a portion of a fluid discharged from the vicinity of an outer peripheral edge of an impeller flows between the impeller and a lower casing, flows between a rotor and the lower casing, flows between a shaft and the rotor along a channel formed inside the rotor, and then flows to an inlet side of the impeller such that the fluid circulates outside and inside the rotor, and thus, foreign matters contained in the fluid do not accumulate in an accommodation space between the rotor and the lower casing, and thus, efficiency and durability of a motor can be improved.Type: ApplicationFiled: December 15, 2020Publication date: May 26, 2022Inventors: Hyun Tae Lee, Wan Sung Pae, Woo Keun Lee
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Patent number: 11199191Abstract: An electric water pump of which productivity, maintainability, and use convenience may be improved by simplifying a production process through a change in a structure, and a method of manufacturing the same. The electric water pump includes: a pump housing accepting a motor therein; an acceptor having a cylindrical shape of which one side is opened and formed at one side of the pump housing; a control substrate installed in the acceptor; an external terminal formed of a conductor and penetrating through the acceptor to electrically connect the control substrate to an external power supply; and an internal terminal formed of a conductor and penetrating through the pump housing and the acceptor to electrically connect the motor and the control substrate to each other.Type: GrantFiled: July 11, 2018Date of Patent: December 14, 2021Assignee: COAVISInventors: Young Sub Jang, Joon Seop Kim, Wan Sung Pae
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Patent number: 11035373Abstract: Provided is a water pump including a supporting structure for an impeller having a lower manufacturing cost and having reduced noise and vibration characteristics compared to a conventional water pump including a supporting structure for an impeller. The water pump including a supporting structure for an impeller includes: a shaft; an impeller having the shaft inserted into a center of the impeller and rotating together with the shaft to discharge an introduced fluid; a core formed on an outer circumference of the shaft; a magnetic material formed on an outer circumference of the core and forming a magnetic field rotating the shaft connected to the core and the impeller; a pump housing the shaft, impeller and core; and a supporting member installed between an end of the shaft and the pump housing to support the shaft.Type: GrantFiled: July 26, 2019Date of Patent: June 15, 2021Assignee: COAVISInventors: Wan Sung Pae, Hyun Tae Lee, Joon Seup Kim
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Patent number: 10995759Abstract: Provided is a water pump including a lower casing, an upper casing coupled to an upper side of the lower casing to form an impeller accommodating space therein by the coupling with the lower casing and having an inlet communicating with the impeller accommodating space and allowing a fluid to be introduced therethrough and an outlet allowing the fluid to be discharged therethrough, an impeller provided in the impeller accommodating space and including an upper plate and a lower plate arranged to be spaced apart from each other vertically and a plurality of blades arranged and coupled between the upper plate and the lower plate, and a rotor coupled to the impeller and rotated together with the impeller, wherein the upper casing has a spacing recess provided on an inner surface corresponding to an outer circumference of the upper plate of the impeller.Type: GrantFiled: March 12, 2020Date of Patent: May 4, 2021Assignee: COAVISInventors: Wan Sung Pae, Hyun Tae Lee, Byeung Jin Kim
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Publication number: 20210083558Abstract: Provided are a motor integrated with a control unit, in which a motor unit and the control unit are efficiently cooled by allowing heat generated from the motor unit to be radiated from the motor unit, and heat generated from the control unit including a control board to be radiated from the control unit, respectively, and a water pump having the same.Type: ApplicationFiled: September 15, 2020Publication date: March 18, 2021Inventors: Wan Sung PAE, Dong Heon MO, Joon Seup KIM
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Publication number: 20200300264Abstract: Provided is a water pump including a lower casing, an upper casing coupled to an upper side of the lower casing to form an impeller accommodating space therein by the coupling with the lower casing and having an inlet communicating with the impeller accommodating space and allowing a fluid to be introduced therethrough and an outlet allowing the fluid to be discharged therethrough, an impeller provided in the impeller accommodating space and including an upper plate and a lower plate arranged to be spaced apart from each other vertically and a plurality of blades arranged and coupled between the upper plate and the lower plate, and a rotor coupled to the impeller and rotated together with the impeller, wherein the upper casing has a spacing recess provided on an inner surface corresponding to an outer circumference of the upper plate of the impeller.Type: ApplicationFiled: March 12, 2020Publication date: September 24, 2020Inventors: Wan Sung PAE, Hyun Tae LEE, Byeung Jin KIM
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Publication number: 20200116151Abstract: The present invention relates to an impeller for an electric water pump capable of preventing a cavitation from occurring in the impeller according to the related art and improving a flow restriction in the impeller by changing an internal structure of the impeller in consideration of a flow of a coolant introduced into the impeller. The impeller for an electric water pump, includes: an inlet member formed in a pipe shape extending to allow a fluid to be introduced; an upper member connected to one end of the inlet member, extending to one side, and having an inner diameter increasing toward the one side; an extension member outwardly extending from one end of the upper member; and a lower impeller member coupled to an upper impeller member formed by the inlet member, the upper member, and the extension member to form a discharge space from which the fluid is discharged.Type: ApplicationFiled: October 15, 2019Publication date: April 16, 2020Inventors: Wan Sung PAE, Byeung Jin KIM, Joon Seup KIM
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Publication number: 20200032808Abstract: Provided is a water pump including a supporting structure for an impeller having a lower manufacturing cost and having reduced noise and vibration characteristics compared to a conventional water pump including a supporting structure for an impeller. The water pump including a supporting structure for an impeller includes: a shaft; an impeller having the shaft inserted into a center of the impeller and rotating together with the shaft to discharge an introduced fluid; a core formed on an outer circumference of the shaft; a magnetic material formed on an outer circumference of the core and forming a magnetic field rotating the shaft connected to the core and the impeller; a pump housing the shaft, impeller and core; and a supporting member installed between an end of the shaft and the pump housing to support the shaft.Type: ApplicationFiled: July 26, 2019Publication date: January 30, 2020Inventors: Wan Sung PAE, Hyun Tae LEE, Joon Seup KIM
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Patent number: 10498187Abstract: Provided is a brushless direct current (BLDC) motor applied to a fuel pump for a motor vehicle, and more particularly, a BLDC motor of a fuel pump for a motor vehicle in which an end of a shaft of a rotor is coupled to a stator side to be rotated such that a length of the shaft is reduced.Type: GrantFiled: January 6, 2017Date of Patent: December 3, 2019Assignee: COAVISInventors: Wan Sung Pae, Hyun Tae Lee, Jin Woo Han
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Publication number: 20190017510Abstract: The present disclosure relates to an electric water pump and a method of manufacturing the same, and more particularly, to an electric water pump of which productivity, maintainability, and use convenience may be improved by simplifying a production process through a change in a structure, and a method of manufacturing the same. The electric water pump includes: a pump housing accepting a motor therein; an acceptor having a cylindrical shape of which one side is opened and formed at one side of the pump housing; a control substrate installed in the acceptor; an external terminal formed of a conductor and penetrating through the acceptor to electrically connect the control substrate to an external power supply; and an internal terminal formed of a conductor and penetrating through the pump housing and the acceptor to electrically connect the motor and the control substrate to each other.Type: ApplicationFiled: July 11, 2018Publication date: January 17, 2019Inventors: Young Sub JANG, Joon Seop KIM, Wan Sung PAE
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Patent number: 10020696Abstract: Provided is a DC motor for a fuel pump for a vehicle. The DC motor for a fuel pump for a vehicle includes: a housing whose inside is hollow; a stator coupled to the inside of the housing and having a first permanent magnet whose N pole is disposed inwardly in a radial direction and a second permanent magnet whose S pole is disposed inwardly in a radial direction, the first permanent magnet and the second permanent magnet being spaced apart from each other to face each other; and a rotor disposed on an inside of the stator while being spaced apart from the stator, in which a first gap g1 between the first permanent magnet and the rotor is different from a second gap g2 between the second permanent magnet and the rotor, whereby a torque ripple that is a fluctuation width of a cogging torque is reduced.Type: GrantFiled: June 7, 2017Date of Patent: July 10, 2018Assignee: COAVISInventors: Gyu Sang Yu, Hyun Tae Lee, Wan Sung Pae
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Publication number: 20180102680Abstract: Provided is a DC motor for a fuel pump for a vehicle. The DC motor for a fuel pump for a vehicle includes: a housing whose inside is hollow; a stator coupled to the inside of the housing and having a first permanent magnet whose N pole is disposed inwardly in a radial direction and a second permanent magnet whose S pole is disposed inwardly in a radial direction, the first permanent magnet and the second permanent magnet being spaced apart from each other to face each other; and a rotor disposed on an inside of the stator while being spaced apart from the stator, in which a first gap g1 between the first permanent magnet and the rotor is different from a second gap g2 between the second permanent magnet and the rotor, whereby a torque ripple that is a fluctuation width of a cogging torque is reduced.Type: ApplicationFiled: June 7, 2017Publication date: April 12, 2018Inventors: Gyu Sang YU, Hyun Tae LEE, Wan Sung PAE
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Publication number: 20170201143Abstract: Provided is a brushless direct current (BLDC) motor applied to a fuel pump for a motor vehicle, and more particularly, a BLDC motor of a fuel pump for a motor vehicle in which an end of a shaft of a rotor is coupled to a stator side to be rotated such that a length of the shaft is reduced.Type: ApplicationFiled: January 6, 2017Publication date: July 13, 2017Inventors: Wan Sung PAE, Hyun Tae LEE, Jin Woo HAN
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Patent number: 9576715Abstract: Provided is a device for magnetizing a ring-shaped magnet for a brushless direct current (BLDC) motor, including: a rotor having a ring-shaped magnet installed on an outer peripheral surface of a rotor core; and a plurality of magnetizing yokes disposed so as to be spaced apart from each other by a predetermined interval while facing an outer peripheral surface of the ring-shaped magnet, magnetizing the ring-shaped magnet to form even-numbered unit magnets, and magnetizing the ring-shaped magnet only in regions except for one end and the other end of the unit magnets.Type: GrantFiled: June 3, 2015Date of Patent: February 21, 2017Assignee: COAVISInventors: Seong Hwan Moon, Wan Sung Pae, In Seok Sohn
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Publication number: 20150380146Abstract: Provided is a device for magnetizing a ring-shaped magnet for a brushless direct current (BLDC) motor, including: a rotor having a ring-shaped magnet installed on an outer peripheral surface of a rotor core; and a plurality of magnetizing yokes disposed so as to be spaced apart from each other by a predetermined interval while facing an outer peripheral surface of the ring-shaped magnet, magnetizing the ring-shaped magnet to form even-numbered unit magnets, and magnetizing the ring-shaped magnet only in regions except for one end and the other end of the unit magnets.Type: ApplicationFiled: June 3, 2015Publication date: December 31, 2015Inventors: Seong Hwan Moon, Wan Sung Pae, In Seok Sohn