Patents by Inventor Qianyong ZHAN

Qianyong ZHAN 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
    Patent number: 11644118
    Abstract: An electronic expansion valve, comprising a valve seat assembly and a valve core assembly. The valve core assembly is disposed in the valve seat assembly. The valve seat assembly comprises a valve seat, a valve seat core, and a guide sleeve. The valve seat is provided with a valve cavity, one end of which is open. A through hole is provided on the valve seat core; the end of the conduction portion close to the guide sleeve is circumferentially provided with an inclined surface inclined outwards. The valve core assembly comprises a valve head. The end of the valve head close to the valve seat core is provided with a sealing surface. The valve head is driven to move close to or away from the valve seat core, so as to adjust the gap between the inclined surface and the sealing surface.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: May 9, 2023
    Assignee: ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    Inventors: Shaojun Zhan, Yukuan Shan, Qianyong Zhan
  • ELECTRONIC EXPANSION VALVE
    Publication number: 20210190398
    Abstract: An electronic expansion valve, comprising a valve seat assembly and a valve core assembly. The valve core assembly is disposed in the valve seat assembly The valve seat assembly comprises a valve seat, a valve seat core, and a guide sleeve. The valve seat is provided with a valve cavity, one end of which is open. A through hole is provided on the valve seat core; the end of the conduction portion close to the guide sleeve is circumferentially provided with an inclined surface inclined outwards. The valve core assembly comprises a valve head. The end of the valve head close to the valve seat core is provided with a sealing surface. The valve head is driven to move close to or away from the valve seat core, so as to adjust the gap between the inclined surface and the sealing surface.
    Type: Application
    Filed: August 21, 2019
    Publication date: June 24, 2021
    Inventors: Shaojun ZHAN, Yukuan SHAN, Qianyong ZHAN