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公开(公告)号：US11905993B2
公开(公告)日：2024-02-20
申请号：US17956246
申请日：2022-09-29
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Jungwan Kim , Yunseok Ha , Byul An , Wonil Kwak , Yeong-do Lee
IPC: F16C32/04
CPC classification number: F16C32/0442 , F16C32/0478 , F16C2360/45
Abstract: A turbomachine according to an embodiment of the present disclosure may include a rotary shaft, a magnetic bearing including a core body configured to surround the rotary shaft, a plurality of poles radially extending from an inner surface of the core body toward the rotary shaft, and coils wound around the plurality of poles to levitate the rotary shaft by using a magnetic force generated by a magnetic field formed by applied electric current, a sleeve journal bearing disposed between the rotary shaft and the magnetic bearing so as to surround the rotary shaft and configured to levitate the rotary shaft by generating a dynamic pressure when the rotary shaft rotates, and a permanent magnet disposed between the plurality of poles and configured to support the rotary shaft by using a magnetic force.
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公开(公告)号：US11513032B2
公开(公告)日：2022-11-29
申请号：US16792886
申请日：2020-02-18
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Wonil Kwak , Junsang Kong , Jungwan Kim , Yunseok Ha
IPC: G01M13/045 , F16C41/00 , H02N2/18 , H04W4/38
Abstract: Provided is a system for real-time condition diagnosis of a bearing module including a self-power generation module installed in an outer ring of a bearing to generate electricity using vibration generated from a micro whirling motion of the bearing, a behavior detection unit installed in the bearing to detect behavior information of the bearing in real time, a wireless transmission module connected to the behavior detection unit to transmit the real-time detected behavior information of the bearing to an external device, and a condition diagnosis unit that receives the behavior information of the bearing transmitted from the wireless transmission module and diagnoses condition of the bearing in real time, wherein the real-time behavior information of the behavior detection unit installed in the bearing is transmitted through the electricity obtained by the self-power generation module.
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公开(公告)号：US10309460B2
公开(公告)日：2019-06-04
申请号：US15964119
申请日：2018-04-27
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Bok Seong Choe , Sangmin Han , Jeon Kook Lee
Abstract: Disclosed is a ball bearing including an inner ring and an outer ring spaced apart from each other, each being rotatable, a cage part including a first cage and a second cage rotatably installed between the inner ring and the outer ring, and having ball receiving part formed along circumferential direction, ball installed in the ball receiving part, and rotating with the cage part as at least one of the inner ring and the outer ring rotates, and magnet which provides a magnetic force to the ball, wherein the first cage has a first seating part which is formed between the ball receiving parts, and on which one side of the magnet is placed, and the second cage has a second seating part which is connected to the first seating part, and on which the other side of the magnet is placed.
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公开(公告)号：US09714883B2
公开(公告)日：2017-07-25
申请号：US14506121
申请日：2014-10-03
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Bokseong Choe , Jeon Kook Lee , Sol-Ji Ryu , Byoungkuk Lee
CPC classification number: G01M13/04 , G01L5/0009 , G01M13/045 , G01N29/045 , G01N29/14 , G01N29/46 , G01N2291/2696
Abstract: A bearing test apparatus has a bearing cap coupled to an outer ring of a bearing to be tested (a “test bearing”), a driving rotary shaft coupled to an inner ring of the test bearing to rotate the inner ring, and a bearing torque meter for measuring a single torque of the test bearing, wherein an extension bar is formed at the bearing cap to protrude thereon, wherein the bearing torque meter includes a measurement rod configured to contact the extension bar and be fixed to support the extension bar in a direction opposite to a rotating direction of the driving rotary shaft, and a power sensor for measuring a force applied to the measurement rod, wherein the single torque of the test bearing is calculated based on a distance from the driving rotary shaft to the measurement rod and a force applied to the measurement rod.
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公开(公告)号：US10247638B2
公开(公告)日：2019-04-02
申请号：US15399073
申请日：2017-01-05
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Bok Seong Choe , Wonil Kwak , Jeon Kook Lee , Ou Seok Seo
Abstract: A bearing test apparatus for testing a test bearing, including a chamber, a bearing cap disposed in the chamber and coupled to an outer wheel of the test bearing, a driving shaft connected to an inner wheel of the test bearing to rotate the inner wheel, an extension arm extending in a radial direction of the bearing cap from the bearing cap to expose one end thereof out of the chamber, and a measurement arm configured to make a contact with one end of the extension arm and configured to be rotatable by the extension arm. When a rotation force is applied to the bearing cap by the outer wheel, the extension arm is used to measure a force applied to the measurement arm, which is used to obtain an exclusive torque of the test bearing.
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Patent Agency Ranking
公开(公告)号：US12013309B2
公开(公告)日：2024-06-18
申请号：US17861714
申请日：2022-07-11
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Wonil Kwak , Yunseok Ha , Yeong-do Lee , Jeon Kook Lee
IPC: G01M13/045
CPC classification number: G01M13/045
Abstract: The present disclosure provides an Anderon meter for cryogenic environment including a housing; a control arm installed on an inner circumference of the housing rotatably relative to the housing, and including a pressing portion; and a clamp including a contact portion on a side and an assembly portion on an opposite side, wherein the contact portion is in contact with the pressing portion so that the contact portion is pressed by the pressing portion, and the assembly portion is coupled to an inner circumference of the bearing by interference fit, wherein the pressing portion presses the contact portion by the control of an amount of relative rotation of the control arm and the assembly portion is coupled to the inner circumference of the bearing by interference fit to determine friction characteristics between the inner race of the bearing and the assembly portion.
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公开(公告)号：US09004765B1
公开(公告)日：2015-04-14
申请号：US14146745
申请日：2014-01-03
Applicant: Korea Institute of Science and Technology
Inventor： Yong Bok Lee , Se Na Jeong , Bokseong Choe
CPC classification number: F16C17/024 , F16C17/026 , F16C33/1015
Abstract: An air foil bearing has a bearing housing having a shaft hole in which a rotary shaft is inserted and a top foil fixed to the shaft hole to support the circumference of the rotary shaft, an air flow path is formed at the top foil by means of a plurality of dams protruding on the inner surface of the top foil, and the air flow path is formed so that air between the top foil and the rotary shaft flows along the circumference of the inner surface of the top foil.
Abstract translation: 气翼轴承具有轴承壳体，其具有轴孔，旋转轴插入轴孔中，顶部箔片固定到轴孔以支撑旋转轴的周边，空气流动路径通过在顶部箔片上形成， 多个突起在顶箔的内表面上的坝，并且形成空气流动通道，使得顶箔和旋转轴之间的空气沿着顶箔的内表面的圆周流动。
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公开(公告)号：US09829107B2
公开(公告)日：2017-11-28
申请号：US15374015
申请日：2016-12-09
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Eo Jin Kim , Jeon Kook Lee
IPC: F16J15/44 , F16J15/3288 , F16J15/3296 , F16C33/76
CPC classification number: F16J15/3288 , F16C33/7886 , F16C2202/36 , F16C2233/00 , F16C2360/23 , F16J15/00 , F16J15/3296
Abstract: An oil sealing device for preventing a leakage of an oil of a bearing which supports a rotary shaft of a rotating machine has a brush member having a plurality of bristles in contact with the rotary shaft, and an actuator configured to move the brush member in a length direction of the rotary shaft, wherein a sloped surface having different heights along a length direction of the rotary shaft is formed at the rotary shaft, and wherein when the bristles are worn, the actuator moves the brush member in a length direction of the rotary shaft so that the bristles comes into contact with the sloped surface.
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公开(公告)号：US09121450B2
公开(公告)日：2015-09-01
申请号：US14309350
申请日：2014-06-19
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Chang Ho Kim , Bok Seong Choe , Sol Ji Ryu
CPC classification number: F16C33/3862 , F16C19/06 , F16C33/3887 , F16C33/4641 , F16C2226/54 , F16C2226/70 , F16C2300/02
Abstract: A cage for a rolling bearing is coupled to a rolling bearing including an inner ring, an outer ring and a plurality of rolling elements rolling between the inner ring and the outer ring to keep intervals of the plurality of rolling elements, wherein the plurality of rolling elements include bodies coupled along a circumference thereof at predetermined intervals, wherein each of the bodies includes a first piece and a second piece which are attachable to each other and detachable from each other. A first coupler and a second coupler configured to be capable of being coupled to each other are respectively formed at the first piece and the second piece, and the first piece and the second piece are primarily coupled by means of a coupling force of the first coupler and the second coupler.
Abstract translation: 用于滚动轴承的保持架联接到包括内圈，外圈和在内圈和外圈之间滚动的多个滚动元件的滚动轴承，以保持多个滚动元件的间隔，其中多个滚动 元件包括以预定间隔沿其圆周连接的主体，其中每个主体包括可彼此附接并可彼此拆卸的第一部件和第二部件。 分别在第一部件和第二部件上形成能够彼此联接的第一联接器和第二联接器，并且第一部件和第二部件通过第一联接器的联接力主要联接 和第二耦合器。
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公开(公告)号：US11525477B2
公开(公告)日：2022-12-13
申请号：US16714794
申请日：2019-12-16
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yong Bok Lee , Wonil Kwak , Bok Seong Choe , Jungwan Kim
IPC: F16C19/52 , F16C27/04 , F16C35/077 , G01M13/045
Abstract: Provided is a fractal structure for power-generation of bearing rotating vibration that is installed on an outer ring of a bearing to generate power using vibration generated from a micro whirling motion of the bearing, the fractal structure including a housing which is in contact with the outer ring of the bearing to receive the vibration generated from the micro whirling motion of the bearing, and has a receiving space therein, a flexible element which is disposed in the receiving space while being in contact with an inner circumference of the housing to convert the vibration into a radial direction, and a piezoelectric element which is installed between the housing and the flexible element and disposed near the receiving space, and deforms upon receiving the vibration converted in the radial direction from the flexible element, thereby producing electricity.
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