| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | TRANSFORMER HAVING NOISE REDUCTION STRUCTURE | US15540944 | 2015-12-30 | US20170365401A1 | 2017-12-21 | Do Jin KIM; Chul Jun PARK; Kyo Ho LEE; Boo Yong SEOL; Seung Hwan CHOI |
| The present invention relates to a transformer having a noise reduction structure. A tank (12) forms the exterior of the transformer (10). An inner space (14) filled with insulating oil is formed inside the tank (12). An iron core (20) is provided inside the tank (12) by a lower frame (16) and an upper frame (18), and coils (22) are wound around parts of the iron core (20) extending in the direction of gravity. An insulating sheet (24) is provided to encompass the surface of each of the coils (22), and has ridge portions (26) and groove portions (28), which are formed to extend in the height direction of the iron core (20). It is preferable that the side surfaces of the groove portions (28) are formed in parallel so as to face each other. The present invention as above minimizes the transfer of vibrations, generated from the coils (22), to the insulating sheets (24) provided on the surfaces of the coils (22) and removes a part of the vibrations since the vibrations coming out after having passed through the insulating sheets (24) are transferred to the insulating oil so as to cancel each other out. Therefore, the present invention can relatively reduce vibration and noise, which are generated from the transformer. | ||||||
| 162 | Stationary induction apparatus | US14743680 | 2015-06-18 | US09711274B2 | 2017-07-18 | Taku Oyama; Takahide Matsuo; Kenichi Kawamura; Akira Yamagishi |
| The invention provides a stationary induction apparatus excellent in core vibration damping, being capable of realizing reduction in core excitation-noise. The stationary induction apparatus according to the invention includes a core made up of plural of core-legs formed by lamination of electromagnetic steel sheets, and a core-yoke formed by lamination of electromagnetic steel sheets to join the plural core-legs together; a core-tightening clasp for tightening a joint between the core-yoke and the core-legs, in the direction of the lamination of the electromagnetic steel sheets, to be secured, a winding, a tank, and an insulating sheet disposed between the core-tightening clasp and the core-yoke. Further, a concave hollowed-out part or a notched part is provided on the insulating sheet, positioned at a joint between the core-yoke and the core-leg, and a vibration insulator is disposed in the concave hollowed-out part or the notched part. | ||||||
| 163 | Magnetic energy-transmitting element and power supply for cancelling out electrical noise | US13883466 | 2011-11-07 | US09704641B2 | 2017-07-11 | Chan-Woong Park |
| The present invention relates to a transmitter and power supply which suffers little EMI deviation and provides adequate margin even in volume production, and which can cut the unit price of transformers and economize on the costs of EMI filters, by cancelling out and eliminating the conducted noise or the conducted noise and radiated noise caused by capacitive coupling between the windings of a transformer, the transformer being of an uncomplicated construction which is good in terms of production. | ||||||
| 164 | Power transmission transformer with a noise inhibiting function | US14810823 | 2015-07-28 | US09646761B2 | 2017-05-09 | Chia-Ching Lin; Ching-Min Chen |
| A power transmission transformer (1) includes a transformer body (11). Each of two upper pipings (3) is connected between the transformer body (11) and one of two heat dissipators (2, 21) outside of the transformer body (11). Each of two lower pipings (4) is connected between the transformer body (11) and one of the heat dissipators (2, 21). A sound absorbing device (6, 61) is mounted between and spaced from one of two sidewalls of the transformer body (11) and one of the heat dissipators (2, 21). The sound absorbing device (6, 61) is fixed to one of the upper pipings (3) and one of the lower pipings (4). An outer wallboard (63) and a sound absorbing material (64) are respectively mounted to two sides of at least one fixing frame (62) of the sound absorbing device (6, 61). | ||||||
| 165 | ELECTRONIC COMPONENT | US15297416 | 2016-10-19 | US20170125159A1 | 2017-05-04 | Jun KARINO; Mizuho KATSUTA; Kosuke ISHIDA |
| An electronic component includes a primary coil including n primary coil conductor layers and a parallel primary coil conductor layer, and secondary and tertiary coils including respectively n secondary and tertiary coil conductor layers. Respective ones of the primary, secondary and tertiary coil conductor layers are arrayed alternately in this order from one side toward other side in laminating direction. The parallel primary coil conductor layer is electrically connected to a predetermined primary coil conductor layer, has the substantially same shape as the predetermined primary coil conductor layer in a plan view, and is disposed on the other side in the laminating direction relative to the tertiary coil conductor layer disposed at a farthest position on the other side in the laminating direction. | ||||||
| 166 | Integrated sound shield for air core reactor | US14892735 | 2014-05-20 | US09576724B2 | 2017-02-21 | Fabian Best; Tom Chiu Hung Lau |
| An air core power reactor (10) having a noise mitigating sound shield (40). In one embodiment the sound shield includes a plurality of sound absorbing panels (42p) configured for positioning about an outermost reactor layer (12′) so that the panels reduce radiation of acoustic energy when the reactor coil layers carry current. One or more flexible members (48) are attached along the first side of each sound absorbing panel for contact with the outermost reactor layer. Sound barrier material (44) is positioned along the second side of each panel. When the flexible members are attached to a panel and the panel is installed about the outermost first layer of the reactor, the flexible members are positioned against the outermost first layer and the flexible members provide a gap between the first side of the panel and the outermost first layer of the reactor. | ||||||
| 167 | INDUCTOR COIL AND ELECTROMAGNETIC COMPONENT | US15118943 | 2015-02-12 | US20160351325A1 | 2016-12-01 | Fang Xie; Leo Sun; Kevin Lee; David Xu |
| The present invention provides an inductance coil comprising a magnetic core and a coil, wherein the coil is formed by winding a flat wire, and the flat surface of the wire is perpendicular to the axis around which the coil is wound. The coil is wrapped with an insulating adhesive tape and the tape is wound on the wire around an axis which is substantially in line with the direction along which the wire forming the coil extends, so as to form an isolation layer on the surface of the coil. Additionally, the present invention provides an electromagnetic device including the above inductance coil. | ||||||
| 168 | RETAINER MEMBER FOR NOISE REDUCTION MEMBER | US15072914 | 2016-03-17 | US20160305604A1 | 2016-10-20 | Tomiko IMOTO; Syuichi KATOGI |
| In a retainer member for retaining a noise reduction member, a retaining portion for retention of a noise reduction member wound with a cable is provided with a claw for locking the cable wound on the noise reduction member. | ||||||
| 169 | WINDING COMPONENT ATTACHMENT STRUCTURE AND POWER CONVERSION DEVICE PROVIDED WITH SAID ATTACHMENT STRUCTURE | US15159154 | 2016-05-19 | US20160260538A1 | 2016-09-08 | Yasuhito TANAKA; Shun FUKUCHI |
| Winding components, each being formed by winding a coil around and along an inner peripheral surface and an outer peripheral surface of a ring-shaped core a plurality of times, are fixed to a case. An attachment structure includes a placing member made of an insulating material and fixed to a fixing surface of the case in a state where a lower surface of the winding component is placed, a pressing member made of an insulating material and disposed to abut on an upper surface of the winding component, and a pressing force imparting portion that couples the placing member with the pressing member and imparts a pressing force toward the fixing surface, from the pressing member to the winding component, and in the pressing force imparting portion, a distance between the placing member and the pressing member is variable in accordance with a height change of the winding component. | ||||||
| 170 | Common mode filter | US14267506 | 2014-05-01 | US09236182B2 | 2016-01-12 | Won-Chul Sim; Seung-Wook Park; Doo-Sung Jung |
| A common mode filter is disclosed. The common mode filter provided by the present invention includes: a magnetic substrate; a coil layer formed on the magnetic substrate and including a coil pattern; an external electrode formed on the coil layer so as to be electrically connected with the coil pattern; a ground electrode formed on the coil layer and configured to discharge static electricity brought in to the external electrode; a post formed on each of the external electrode and the ground electrode; and an electrostatic discharge member formed between the external electrode and the ground electrode so as to cover a side surface of the post and configured to discharge static electricity brought in to the external electrode to the ground electrode. | ||||||
| 171 | Acoustic noise reduction in power supply inductors | US13019233 | 2011-02-01 | US09229500B2 | 2016-01-05 | Dayu Qu |
| Embodiments of the present invention provide an apparatus that reduces an audible noise produced in a power supply. The apparatus includes: (1) a housing; (2) an inductor coil formed from a coil of wire enclosed in the housing; (3) a set of wires that are coupled from the inductor coil to the outside of the housing through corresponding apertures in the housing, comprising electrical leads for the inductor coil; and (4) a predetermined amount of adhesive in the apertures that bonds the wires to the housing to reduce an audible noise produced when the current through the inductor coil is cycled quickly. | ||||||
| 172 | INDUCTIVE DEVICE LIMITING ACOUSTIC OSCILLATIONS | US14427402 | 2013-09-24 | US20150288194A1 | 2015-10-08 | Louis-Marie Genet; Laurent Desreumaux |
| An inductive device including a winding in which a ferromagnetic body including gaps is inserted, the winding being held in a metal casing, and in which a thermally conductive film is placed between the ferromagnetic body and a base of the metal casing, the film having a stiffness lower than that of a synthetic resin | ||||||
| 173 | Harmonic cancelling interphase magnetic device | US13667818 | 2012-11-02 | US09153376B2 | 2015-10-06 | Andrzej Pietkiewicz |
| A harmonic cancelling interphase magnetic device (1) comprising a magnetic core of rectangular shape with three wound legs (14) and two non-wound legs (12), wherein the cross-section of said non-wound legs (12) is thinner than the cross-section of said wound legs (14). The magnetic device is designed for a front end multi-pulse rectifier or inverter. Its use enables reduction of the harmonics of the currents absorbed or injected to three-phase power line. Compare to known solutions, cost, material and dimensions of the magnetic device are significantly reduced. | ||||||
| 174 | SOUND MITIGATION FOR AIR CORE REACTORS | US14409306 | 2013-07-09 | US20150170826A1 | 2015-06-18 | Tom Chiu Hung Lau; Fabian Best; Terry Wai Cheong Wong; Willie Kim Fung Chan; Sean Alves; Thong Tong; Michael Sharp |
| An air core reactor (47) including a plurality of concentric conductor winding packages (44, 46) wherein a force (F+) generated by the interaction of current (+) flowing through one package and a magnetic field (42) generated by the reactor is out of phase (F−) with a force generated in another package, thereby effectively mitigating audible sound generated by power operation of the reactor. In one embodiment (FIG. 3), the out of phase force may be generated when at least one winding (38c, 37d) of one package (38) is configured to conduct a current (−) that is at least 10 degrees out of phase with a current (+) conducted by another package (40) or other windings (38a, 38b) of the reactor (36). | ||||||
| 175 | Method for reducing the noise emission of a transformer | US13386672 | 2009-07-24 | US09020156B2 | 2015-04-28 | Andreas Dantele; Alexander Hackl; Johannes Korak; Thomas Rittenschober; Helmut Wernick |
| A method for reducing the noise emission of a transformer, the transformer tank of which is filled with liquid and the tank wall of which vibrates during operation, is provided. The method is characterized by the sequence of the following method steps: detecting natural frequency values of the tank wall for at least one excitation frequency; determining at least one eigenmode for which the vibration of the tank wall is composed at an excitation frequency, from the natural frequency values, wherein areas of large curvature are determined on the tank wall; arranging at least one vibration loading device in at least one of said areas; and controlling the at least one vibration loading device by means of a control device in order to counteract the vibration of the tank wall. | ||||||
| 176 | FERRITE CERAMIC COMPOSITION, CERAMIC ELECTRONIC COMPONENT, AND PROCESS FOR PRODUCING CERAMIC ELECTRONIC COMPONENT | US14550546 | 2014-11-21 | US20150077210A1 | 2015-03-19 | Tomoyuki ANKYU; Atsushi YAMAMOTO; Yuko NOMIYA; Wataru KANAMI |
| This disclosure provides a ferrite ceramic composition, a ceramic electronic component including the ceramic composition, and a process of producing a ceramic electronic component including the ferrite ceramic composition, of which the insulation performance can be secured even when fired simultaneously with a metal wire material containing Cu as the main component, and which can have good electric properties. The ferrite ceramic composition includes an Ni—Mn—Zn-based ferrite having a molar content of CuO of 5 mol % or less and in which, when the molar content (x) of Fe2O3 and the molar content (y) of Mn2O3 are expressed by a coordinate point (x,y), the coordinate point (x,y) is located in an area bounded by coordinate points A (25,1), B (47,1), C (47,7.5), D (45,7.5), E (45,10), F (35,10), G (35,7.5) and H (25,7.5). | ||||||
| 177 | Reduced noise high- or medium-voltage equipment including an immersed induction-activated portion | US13695715 | 2011-05-03 | US08841982B2 | 2014-09-23 | Francois Devaux; Pascal Vouagner |
| High- or medium-voltage equipment comprising an induction-activated portion, a tank surrounding the active portion and filled with a dielectric fluid, such as oil, and passive acoustic reduction means for reducing acoustic waves coming from the active portion and propagating in the dielectric fluid. According to the invention, the passive means create an interference field that divides the propagated waves into two groups of waves of opposite phase that interfere with each other in a zone that is at a distance from the walls of the tank so as to at least limit the amplitude of the waves before they make contact with said walls. The equipment provides an effective solution for significantly reducing the noise that is propagated by the dielectric fluid medium. | ||||||
| 178 | ELECTRONIC COMPONENT FOR GUIDING A MAGNETIC FIELD | US14354127 | 2012-10-22 | US20140266537A1 | 2014-09-18 | Martin Bichler |
| An electronic component for guiding a magnetic field comprises a core (20) of a magnetizable material, which has at least two spaced-apart legs (11a, 11b) with opposing surfaces (O11a, O11b) separated from one another by a gap (S). The component comprises at least one compressible molding (20), which is arranged compressed in the gap (S), the at least one molding (20) being in contact with the respective surfaces (O11a, O11b) of the at least two spaced-apart legs (11a, 11b). | ||||||
| 179 | METHOD OF REDUCING AUDIBLE NOISE IN MAGNETIC CORES AND MAGNETIC CORES HAVING REDUCED AUDIBLE NOISE | US13283902 | 2011-10-28 | US20130106559A1 | 2013-05-02 | Mark Robert Columbus; Robert Brown; Kengo Takahashi; Ryusuke Hasegawa |
| An amorphous alloy-based magnetic core with reduced audible noise and a method of making the amorphous alloy-based magnetic core emanating low audible noise, including: placing the core with multiple layers of high strength tape on the core legs, wherein the tapes have a high tensile strength, high dielectric strength and high service temperature, resulting in reduced level of audible noise. When operated under optimum condition, the reduced level of audible noise is 6-10 dB less when compared with a same-size core that has been coated with resin instead. | ||||||
| 180 | Method for Noise Reduction in Transformers | US13190044 | 2011-07-25 | US20120260495A1 | 2012-10-18 | Raymundo Carrasco Aguirre; Eduardo Herrera Saucedo; Luis Ernesto Mora Forsbach; Eduardo Martínez Escobedo; Sergio Camilo Ruiz Escobedo; Humberto Gerardo Mota Mireles |
| A method for reducing noise in an electric transformer uses a rigid fastening member during transportation which is uncoupled during its operation, leaving the live part of the transformer coupled to a tank through damper elements reducing vibration transmission from the live part to the tank, reducing the noise emitted by the transformer. | ||||||
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