Patents by Inventor Tangqing Liu

Tangqing Liu 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).

  • Electronic expansion valve and cooling system having same
    Patent number: 11168804
    Abstract: An electronic expansion valve and a refrigeration system including the electronic expansion valve are provided. The electronic expansion valve includes a valve seat, a valve needle, a drive mechanism, a planetary gear deceleration mechanism. The drive mechanism serves as an input end of the planetary gear deceleration mechanism, the planetary gear deceleration mechanism has the output inner gear ring, the output inner gear ring is fixedly connected to a screw rod of the transmission mechanism to enable the screw rod to rotate, the screw rod is in threaded connection with a nut, to convert a rotation motion of the screw rod into a linear motion.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: November 9, 2021
    Assignee: Zhejiang Sanhua Intelligent Controls Co., Ltd.
    Inventors: Feng Lv, Tangqing Liu, Xiaohui Shu, Xianrang Wei
  • ELECTRONIC EXPANSION VALVE AND COOLING SYSTEM HAVING SAME
    Publication number: 20200386340
    Abstract: An electronic expansion valve and a refrigeration system including the electronic expansion valve are provided. The electronic expansion valve includes a valve seat, a valve needle, a drive mechanism, a planetary gear deceleration mechanism. The drive mechanism serves as an input end of the planetary gear deceleration mechanism, the planetary gear deceleration mechanism has the output inner gear ring, the output inner gear ring is fixedly connected to a screw rod of the transmission mechanism to enable the screw rod to rotate, the screw rod is in threaded connection with a nut, to convert a rotation motion of the screw rod into a linear motion.
    Type: Application
    Filed: November 30, 2018
    Publication date: December 10, 2020
    Applicant: Zhejiang Sanhua Intelligent Controls Co., Ltd.
    Inventors: Feng Lv, Tangqing Liu, Xiaohui Shu, Xianrang Wei