Patents by Inventor Shih-Jie WEI

Shih-Jie WEI 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).

  • Patent number: 11754329
    Abstract: A cooling system for cooling a machine tool having a machine temperature. The cooling system comprises gas source, refrigeration circulation, fan, and controller. The gas source is configured for providing gas. The refrigeration circulation comprises heat exchanger, compressor, condenser, and expansion valve. The heat exchanger is in fluid communication with the gas source and configured to cool the gas down to target temperature and to provide the gas to the machine tool. The compressor has operation frequency. The fan is configured to cool the condenser and has a rotation speed. The controller is connected to the compressor and the fan. When a target temperature difference that is equal to the machine temperature minus the target temperature is smaller than threshold temperature difference, the controller keeps the operation frequency at minimum frequency and sets the rotation speed to be smaller than a maximum rotation speed.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: September 12, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Szu-Chia Lin, Shih-Jie Wei, Ren-Hao Lu, Yu-Hsuan Wu
  • Publication number: 20220235985
    Abstract: A cooling system for cooling a machine tool having a machine temperature. The cooling system comprises gas source, refrigeration circulation, fan, and controller. The gas source is configured for providing gas. The refrigeration circulation comprises heat exchanger, compressor, condenser, and expansion valve. The heat exchanger is in fluid communication with the gas source and configured to cool the gas down to target temperature and to provide the gas to the machine tool. The compressor has operation frequency. The fan is configured to cool the condenser and has a rotation speed. The controller is connected to the compressor and the fan. When a target temperature difference that is equal to the machine temperature minus the target temperature is smaller than threshold temperature difference, the controller keeps the operation frequency at minimum frequency and sets the rotation speed to be smaller than a maximum rotation speed.
    Type: Application
    Filed: April 14, 2021
    Publication date: July 28, 2022
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Szu-Chia LIN, Shih-Jie WEI, Ren-Hao LU, Yu-Hsuan WU
  • Patent number: 11052504
    Abstract: A temperature regulation system and a temperature regulation method are applicable to a machine tool. The temperature regulation system includes a cooling fluid storage tank, a heating fluid storage tank, an internal circulation subsystem, an external circulation subsystem and a computing unit. The internal circulation subsystem includes a first valve. The external circulation subsystem includes a plurality of flow channels and a second valve and a third valve disposed on the plurality of the flow channels. The computing unit controls the first valve, the second valve and the third valve to switch flow directions of the plurality of the flow channels among the cooling fluid storage tank, the heating fluid storage tank and machine tool. Therefore, a thermal balance of the machine tool can be effectively maintained.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: July 6, 2021
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shi-Jie Luo, Hsi-Hung Hsiao, Kun-Ying Li, Shih-Jie Wei, Yan-Sin Liao, Szu-Chia Lin, Yu-Hsuan Wu
  • Patent number: 10688615
    Abstract: This disclosure relates to a temperature control system that may be applied to a machine tool. The system includes a cooling circulation and a controller. The cooling circulation comprises a pump, a cooler and a solenoid valve. The pump may be driven by a variable frequency motor so as to flow through the spindle of the machine tool. The cooler is serially connected with the liquid pump, and may cool the liquid coolant. The solenoid valve connects to inlet and outlet of the cooler, and may prevent the liquid coolant flows through the spindle from flowing back to the cooler. The controller is electrically connected with the variable frequency motor, the cooler and the solenoid valve. Further, the controller is connected to the machine tool to detect several parameters, so as to control the variable frequency motor, the cooler and the solenoid valve.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: June 23, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shih-Jie Wei, Kun-Ying Li, Yan-sin Liao, Shi-Jie Luo, Hsi-Hung Hsiao, Szu-Chia Lin
  • Patent number: 10596670
    Abstract: The disclosure is a thermal stability control system and a control method thereof for a machine tool. The control system mainly consists of a machine cooling sub-system composed of a pump, at least a cooling loop and a tank for storing cooling fluid, a cooling fluid cooling and heating sub-system, a heater and a micro controller. The cooling fluid cooling and heating sub-system further consists of a condenser, an evaporator, a directional valve, an expansion valve and a compressor. The micro controller dominates corresponding operation combinations of turning on/off the heater, enabling/disenabling the cooling fluid cooling and heating sub-system as a heat pump or a cooler by activating/releasing the directional vale, and adjusting upward/downward the driving frequency of an inverter duty motor to drive the pump to change the flow rate of cooling fluid through the cooling loop according the real time load of the machine tool.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: March 24, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yan-Sin Liao, Shih-Jie Wei, Kun-Ying Li, Shi-Jie Luo, Hsi-Hung Hsiao
  • Publication number: 20200055158
    Abstract: This disclosure relates to a temperature control system that may be applied to a machine tool. The system includes a cooling circulation and a controller. The cooling circulation comprises a pump, a cooler and a solenoid valve. The pump may be driven by a variable frequency motor so as to flow through the spindle of the machine tool. The cooler is serially connected with the liquid pump, and may cool the liquid coolant. The solenoid valve connects to inlet and outlet of the cooler, and may prevent the liquid coolant flows through the spindle from flowing back to the cooler. The controller is electrically connected with the variable frequency motor, the cooler and the solenoid valve. Further, the controller is connected to the machine tool to detect several parameters, so as to control the variable frequency motor, the cooler and the solenoid valve.
    Type: Application
    Filed: October 25, 2018
    Publication date: February 20, 2020
    Inventors: Shih-Jie WEI, Kun-Ying Li, Yan-sin Liao, Shi-Jie Luo, Hsi-Hung Hsiao, Szu-Chia Lin
  • Publication number: 20190047104
    Abstract: The disclosure is a thermal stability control system and a control method thereof for a machine tool. The control system mainly consists of a machine cooling sub-system composed of a pump, at least a cooling loop and a tank for storing cooling fluid, a cooling fluid cooling and heating sub-system, a heater and a micro controller. The cooling fluid cooling and heating sub-system further consists of a condenser, an evaporator, a directional valve, an expansion valve and a compressor. The micro controller dominates corresponding operation combinations of turning on/off the heater, enabling/disenabling the cooling fluid cooling and heating sub-system as a heat pump or a cooler by activating/releasing the directional vale, and adjusting upward/downward the driving frequency of an inverter duty motor to drive the pump to change the flow rate of cooling fluid through the cooling loop according the real time load of the machine tool.
    Type: Application
    Filed: September 12, 2017
    Publication date: February 14, 2019
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yan-Sin LIAO, Shih-Jie WEI, Kun-Ying LI, Shi-Jie LUO, Hsi-Hung HSIAO
  • Patent number: 9671035
    Abstract: The present disclosure provides a flow regulator capable of regulating flow resistance of a fluid by adjusting helical pitch of the flow regulator. The flow regulator comprises: a channel, a rod, and a helical coil. The channel has a fluid inlet and a fluid outlet for a fluid flowing in and out of the flow regulator, respectively. The rod has a fore end and a rear end opposite to each other. The fore end is inside the channel, and the rear end is closer to the fluid outlet than the fluid inlet. The helical coil winds around the rod, and the helical pitch of the helical coil is adjustable for regulating flow resistance of the fluid. The channel further has a narrowed section where part of the helical coil located therein substantially occupies an annular space between the rod and an inner wall of the channel.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: June 6, 2017
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shih-Jie Wei, Hua-Chih Huang
  • Publication number: 20160018824
    Abstract: The present disclosure provides a flow regulator capable of regulating flow resistance of a fluid by adjusting helical pitch of the flow regulator. The flow regulator comprises: a channel, a rod, and a helical coil. The channel has a fluid inlet and a fluid outlet for a fluid flowing in and out of the flow regulator, respectively. The rod has a fore end and a rear end opposite to each other. The fore end is inside the channel, and the rear end is closer to the fluid outlet than the fluid inlet. The helical coil winds around the rod, and the helical pitch of the helical coil is adjustable for regulating flow resistance of the fluid. The channel further has a narrowed section where part of the helical coil located therein substantially occupies an annular space between the rod and an inner wall of the channel.
    Type: Application
    Filed: December 26, 2014
    Publication date: January 21, 2016
    Inventors: SHIH-JIE WEI, HUA-CHIH HUANG
  • Patent number: 9144868
    Abstract: An auto-centering apparatus of a steady rest has: a base part; a main support part installed on the top of the base part, and a loading unit installed on the top of the main support part; at least one side support part installed on the top of the base part and located at least one side of the main support part, and a loading unit installed on the top of the side support part; a lift-up module installed in the base part and coupled to the main support part; and a connecting unit installed between the main support part and the side support part.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: September 29, 2015
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Hua-Chih Huang, Shih-Jie Wei, Hsin-Chuan Su
  • Publication number: 20150020656
    Abstract: An auto-centering apparatus of a steady rest has: a base part; a main support part installed on the top of the base part, and a loading unit installed on the top of the main support part; at least one side support part installed on the top of the base part and located at least one side of the main support part, and a loading unit installed on the top of the side support part; a lift-up module installed in the base part and coupled to the main support part; and a connecting unit installed between the main support part and the side support part.
    Type: Application
    Filed: November 26, 2013
    Publication date: January 22, 2015
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Hua-Chih HUANG, Shih-Jie WEI, Hsin-Chuan SU