Patents by Inventor Yu-Choung Chang

Yu-Choung Chang 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).

  • Publication number: 20230155438
    Abstract: A stator includes a stator core and at least one fastener, the stator core includes a lamination, a shaft disposed through the lamination, and at least one insulator disposed on the lamination and configured to be wound with a wire. The fastener is disposed on the at least one insulator and configured for the wire to be wound thereon and for fixing at least one cable coming out from the shaft so as to electrically couple the wire and the at least one cable.
    Type: Application
    Filed: March 23, 2022
    Publication date: May 18, 2023
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Sheng-Tsz LIU, Chun-Yen OU, Yu-Ting SU, Lin-Yen PENG, Yang-Guang LIU, Yu-Choung CHANG
  • Patent number: 10374536
    Abstract: A method for controlling a ceiling fan motor includes: setting a target value of rotational speed and a limited value of rotational torque; controlling the ceiling fan motor to operate; obtaining operation information of the ceiling fan motor; calculating a current rotational speed and a current rotational torque according to the operation information; determining whether the current rotational torque is greater than or equal to the limited value of rotational torque; performing a constant rotational torque operation when the current rotational torque is greater than or equal to the limited value of rotational torque; determining whether the current rotational speed reaches the target value of rotational speed when the current rotational torque is less than the limited value of rotational torque; performing a constant rotational speed operation when the current rotational speed reaches the target value of rotational speed; and increasing torque current of the ceiling fan motor.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: August 6, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Liang-Qiao Huang, Yu-Choung Chang, Yang-Guang Liu, Zhi-Jia Liang
  • Publication number: 20190199254
    Abstract: A method for controlling a ceiling fan motor includes: setting a target value of rotational speed and a limited value of rotational torque; controlling the ceiling fan motor to operate; obtaining operation information of the ceiling fan motor; calculating a current rotational speed and a current rotational torque according to the operation information; determining whether the current rotational torque is greater than or equal to the limited value of rotational torque; performing a constant rotational torque operation when the current rotational torque is greater than or equal to the limited value of rotational torque; determining whether the current rotational speed reaches the target value of rotational speed when the current rotational torque is less than the limited value of rotational torque; performing a constant rotational speed operation when the current rotational speed reaches the target value of rotational speed; and increasing torque current of the ceiling fan motor.
    Type: Application
    Filed: June 26, 2018
    Publication date: June 27, 2019
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Liang-Qiao HUANG, Yu-Choung CHANG, Yang-Guang LIU, Zhi-Jia LIANG
  • Patent number: 10177617
    Abstract: An external rotor motor includes an inner stator and an external rotor. The external rotor includes a casing and a plurality of magnets. The casing has an annular inner wall. The annular inner wall faces the inner stator and surrounds the inner stator. The magnets are placed along the annular inner wall of the casing. The magnets surround the inner stator. An end of at least one of the magnets has a round edge, a curvature radius of the round edge is R, a thickness of the at least one of the plurality of magnets is T, and the following condition is satisfied: 0.85?R/T?1.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: January 8, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shou-Long Yu, Yang-Guang Liu, Yu-Choung Chang
  • Publication number: 20180159393
    Abstract: An external rotor motor includes an inner stator and an external rotor. The external rotor includes a casing and a plurality of magnets. The casing has an annular inner wall. The annular inner wall faces the inner stator and surrounds the inner stator. The magnets are placed along the annular inner wall of the casing. The magnets surround the inner stator. An end of at least one of the magnets has a round edge, a curvature radius of the round edge is R, a thickness of the at least one of the plurality of magnets is T, and the following condition is satisfied: 0.85?R/T?1.
    Type: Application
    Filed: March 29, 2017
    Publication date: June 7, 2018
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shou-Long YU, Yang-Guang LIU, Yu-Choung CHANG
  • Publication number: 20180131245
    Abstract: An external rotor motor includes an inner stator and an external rotor. The inner stator includes a stator yoke and stator windings. The stator yoke has a first side and a second side opposite to each other. The first side and the second side are in an axial direction of the inner stator. The stator windings wound round the stator yoke. The external rotor includes a case and a magnet. The magnet is disposed on an inner side of the case, the stator yoke is surrounded by the magnet. The external rotor is rotatable to the inner stator. Two sides of the magnet opposite to each other respectively protrude from the first side and the second side of the stator yoke, and a center of the stator yoke and a center of the magnet are spaced apart by a distance in the axial direction of the inner stator.
    Type: Application
    Filed: December 12, 2016
    Publication date: May 10, 2018
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chia-Hao HSU, Yang-Guang LIU, Shy-Her NIAN, Yu-Choung CHANG
  • Patent number: 9966804
    Abstract: An outer-rotor permanent magnet brushless motor is disclosed, which comprises an outer-rotor and an inner-stator. The outer-rotor configured with P poles, P is a natural number and denotes a multiple of 4. The inner-stator has a stator axle, and S teeth which configured on outer surface of stator, S=P?1, S is a natural number. A circle is formed about a center of the stator axle from the center of the outer end surface. A correction angle a1 and an original angle a are defined from the center of the outer end surface. T The ratio of a1/a is defined by the following formula: 0.2<(a1/a)<0.6.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: May 8, 2018
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shou-Long Yu, Yang-Guang Liu, Chia-Hao Hsu, Liang-Chiao Huang, Yu-Choung Chang
  • Publication number: 20160164349
    Abstract: An outer-rotor permanent magnet brushless motor is disclosed, which comprises an outer-rotor and an inner-stator. The outer-rotor configured with P poles, P is a natural number and denotes a multiple of 4. The inner-stator has a stator axle, and S teeth which configured on outer surface of stator, S=P?1, S is a natural number. A circle is formed about a center of the stator axle from the center of the outer end surface. A correction angle a1 and an original angle a are defined from the center of the outer end surface. T The ratio of a1/a is defined by the following formula: 0.2<(a1/a)<0.6.
    Type: Application
    Filed: May 27, 2015
    Publication date: June 9, 2016
    Inventors: SHOU-LONG YU, Yang-Guang Liu, Chia-Hao Hsu, Liang-Chiao Huang, Yu-Choung Chang
  • Publication number: 20150160671
    Abstract: A power supply with electrical energy management, applied to variable speed blowing devices includes a rectification unit with a power factor correction function, a DC voltage stabilizing unit, a control unit, an input unit, a communication unit, at least one DC voltage regulator unit with an electrical energy measuring function, and at least one variable speed blowing devices. The rectification unit and the DC voltage stabilizing unit can use AC and DC as the power sources, respectively. The control unit utilizes the input information of the input unit and the electrical energy measuring information of the at least one DC voltage regulator unit to adjusts the output terminal voltages of the at least one DC output voltage regulator unit via applying a priority method, so that the load-shedding operation of the variable speed blowing device can be performed to meet the optimal regional demand control.
    Type: Application
    Filed: August 21, 2014
    Publication date: June 11, 2015
    Inventors: YANG-GUANG LIU, LIANG-CHIAO HUANG, MIN-JU LIN, MENG-YEN TSAI, WEI-DA TU, YU-CHOUNG CHANG
  • Patent number: 8579604
    Abstract: An improved floating apparatus for scroll compressors is disclosed, which is a multi-function device integrating a temperature protection mechanism, a pressure protection mechanism and a backflow-proof mechanism and therefore substantially is a floating seal member with overheating protection, high pressure protection and backflow-proof capabilities. In detail, the present disclosure provides a floating apparatus for scroll compressors that not only can be manufactured easily, but also capable of distributing the acting force resulting from the gliding block for providing better sealing effect while preventing the scroll compressors from being damaged by high temperature and high pressure.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: November 12, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Kun-Yi Liang, Yu-Choung Chang, Shu-Er Huang, Chun-Chung Yang, Chi-Hsing Chen, Yueh-Ju Tang
  • Publication number: 20120148433
    Abstract: An improved floating apparatus for scroll compressors is disclosed, which is a multi-function device integrating a temperature protection mechanism, a pressure protection mechanism and a backflow-proof mechanism and therefore substantially is a floating seal member with overheating protection, high pressure protection and backflow-proof capabilities. In detail, the present disclosure provides a floating apparatus for scroll compressors that not only can be manufactured easily, but also capable of distributing the acting force resulting from the gliding block for providing better sealing effect while preventing the scroll compressors from being damaged by high temperature and high pressure.
    Type: Application
    Filed: February 18, 2011
    Publication date: June 14, 2012
    Applicant: Industrial Technology Research Institute
    Inventors: KUN-YI LIANG, Yu-Choung Chang, Shu-Er Huang, Chun-Chung Yang, Chi-Hsing Chen, Yueh-Ju Tang
  • Publication number: 20110150690
    Abstract: An oil supply structure for a refrigerant compressor is connected to a main shaft of the refrigerant compressor. The oil supply structure has a concave recessed from a periphery to a center, an oil hole penetrating the center of the concave and in communication with an oil supply passage of the main shaft, and at least one blade protruding from the concave and extending from the periphery towards the oil-hole. A rotation direction of the blade is opposite to a rotation direction of the main shaft. Through a simple structure in a form of an impeller, the oil supply structure can generate the function of a centrifugal pump by the concave and the blade during rotation, so as to change the supply of a lubricating oil according to changes in the rotation rate.
    Type: Application
    Filed: April 20, 2010
    Publication date: June 23, 2011
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yueh-Ju Tang, Shu-Er Huang, Yu-Choung Chang
  • Patent number: 7736135
    Abstract: A scroll compressor including a block, a fixed scroll, an orbiting scroll, a crankshaft, an Oldham ring and an oil passage is provided, wherein the fixed scroll is fixed on the block, and the orbiting scroll, the crankshaft and the Oldham ring are disposed on the block. The fixed scroll and the orbiting scroll form a gas-in area, a compressing area and a gas-out area which are connected in a series. The orbiting scroll is eccentric connected with the crankshaft to orbit over the fixed scroll and drive the Oldham ring moving. A reciprocating motion area on the block is formed via the reciprocating motion between the block and the Oldham ring, wherein the block has an oil opening in the reciprocating motion area. Besides, one terminal of the oil passage is connected to the oil opening, and another terminal of the oil passage is connected to the gas-in area and the compressing area.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: June 15, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Kun-Yi Liang, Shu-Er Huang, Chun-Chung Yang, Yueh-Ju Tang, Yu-Choung Chang, Yang-Kuang Liu
  • Publication number: 20100122544
    Abstract: A micro-channel heat exchanger module is respectively connected to a compressor and an expansion device. The micro-channel heat exchanger module includes a heat transfer tube module and a block. The block has a working fluid inlet channel, a working fluid outlet channel, a working fluid distribution chamber, a plurality of working fluid outlet openings, and a plurality of working fluid inlet openings. The working fluid inlet channel is connected to one of a compressor and an expansion device. The working fluid distribution chamber communicates with the working fluid inlet channel. The working fluid outlet openings communicate the working fluid distribution chamber with the heat transfer tube module. The working fluid inlet openings communicate the heat sink with the working fluid outlet channel. The working fluid outlet channel is connected to the other one of the compressor and the expansion device.
    Type: Application
    Filed: April 20, 2009
    Publication date: May 20, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chun-Chung YANG, Yu-Choung CHANG, Pei-Yu YU, Bo-Chin WANG
  • Patent number: 7611345
    Abstract: A scroll type compressor is disclosed. The scroll type compressor includes a housing, a frame, a compartment, a separator, a scroll pairs, a slider, a plurality of compartments, at least a pressure-regulating mechanism, and a guiding element. The compartment in the housing is separated into a high-pressure compartment, a low-pressure compartment, and a middle-pressure compartment. The separator is disposed between the high-pressure compartment and the low-pressure compartment. The separator includes an outlet at the center thereof, and at least a passage through the separator. When the pressure in the high-pressure compartment is less than that in low-pressure compartment, the pressure-regulating mechanism is opened to exhaust pressure from the middle-pressure compartment to the high-pressure compartment.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: November 3, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Shu-Er Huang, Kun-Yi Liang, Yu-Choung Chang, Chih-Chung Lo
  • Publication number: 20090162231
    Abstract: A scroll compressor including a block, a fixed scroll, an orbiting scroll, a crankshaft, an Oldham ring and an oil passage is provided, wherein the fixed scroll is fixed on the block, and the orbiting scroll, the crankshaft and the Oldham ring are disposed on the block. The fixed scroll and the orbiting scroll form a gas-in area, a compressing area and a gas-out area which are connected in a series. The orbiting scroll is eccentric connected with the crankshaft to orbit over the fixed scroll and drive the Oldham ring moving. A reciprocating motion area on the block is formed via the reciprocating motion between the block and the Oldham ring, wherein the block has an oil opening in the reciprocating motion area. Besides, one terminal of the oil passage is connected to the oil opening, and another terminal of the oil passage is connected to the gas-in area and the compressing area.
    Type: Application
    Filed: May 22, 2008
    Publication date: June 25, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kun-Yi Liang, Shu-Er Huang, Chun-Chung Yang, Yueh-Ju Tang, Yu-Choung Chang, Yang-Kuang Liu
  • Patent number: 7503755
    Abstract: A baffle plate assembly has a baffle plate comprising a back plate and a partition wall. The back plate has an inner space and is attached to the housing of the compressor. The partition wall is formed on the back plate to divide the inner space of the back plate into at least one upper guiding channel communicating with the compressing chamber in the compressor and at least one lower guiding channel communicating with the motor chamber of the compressor. Accordingly, the working fluid can be respectively led into the compressing chamber and the motor chamber of the compressor through the at least one upper guiding channel and the at least one lower guiding channel in a certain proportion. Consequently, the compressor will operate at an optimal condition.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: March 17, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Ching-Feng Lai, Yu-Choung Chang, Kun-I Liang, Ann Huang
  • Publication number: 20080159892
    Abstract: A scroll type compressor is disclosed. The scroll type compressor includes a housing, a frame, a compartment, a separator, a scroll pairs, a slider, a plurality of compartments, at least a pressure-regulating mechanism, and a guiding element. The compartment in the housing is separated into a high-pressure compartment, a low-pressure compartment, and a middle-pressure compartment. The separator is disposed between the high-pressure compartment and the low-pressure compartment. The separator includes an outlet at the center thereof, and at least a passage through the separator. When the pressure in the high-pressure compartment is less than that in low-pressure compartment, the pressure-regulating mechanism is opened to exhaust pressure from the middle-pressure compartment to the high-pressure compartment.
    Type: Application
    Filed: December 27, 2007
    Publication date: July 3, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shu-Er Huang, Kun-Yi Liang, Yu-Choung Chang, Chih-Chung Lo
  • Publication number: 20080159895
    Abstract: A sealing structure includes a first substrate having a first compartment, a second compartment and a first base surface. A first element, disposed between the first and second compartments, a second element and a third element, moves between a first initial position and a first predetermined position. The first element has a first acting surface and the second element has a second acting surface. The third element includes a body, a first sectioned part having a first main conjunctive surface, and a second sectioned part having a second main conjunctive surface. When the first element is moved to the first predetermined position, the body is clamped between the first and second acting surfaces, and the first main conjunctive surface contacts the second main conjunctive surface. Thus, the deformed third element pressing against the first base surface separates the first compartment from the second compartment.
    Type: Application
    Filed: May 30, 2007
    Publication date: July 3, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shu-Er Huang, Chun-Chung Yang, Kun-Yi Liang, Yu-Choung Chang
  • Patent number: 7364416
    Abstract: A scroll type compressor with an enhanced sealing arrangement includes two sealing rings, mounted one between a first part of a gliding block and a first chamber of a fixed scroll and another one between a second part of the gliding block and a second chamber of the fixed scroll, respectively. The sealing ring has a U-shape cross section characterized in having a center depth smaller than half of a total height of the cross section. By providing such sealing rings, damage in mounting the sealing rings can be reduced to a minimum, possible leakage from the damage can be avoided, the assembly process in producing the compressor can be improved, and the compressor can be successfully merchandized.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: April 29, 2008
    Assignee: Industrial Technology Research Institute
    Inventors: Kun-Yi Liang, Shu-Er Huang, Chun-Chung Yang, Hung-Chi Chen, Yu-Choung Chang, Bo-Chin Wang