Patents by Inventor Baijiang Qian

Baijiang Qian 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: 12320430
    Abstract: An electric valve includes a valve seat component, and a valve core component. The valve seat component includes a valve seat and a sealing ring. The valve core component includes a valve core. The valve core includes a lower section, and the lower section is annular. The valve seat component further includes an inner bushing and a pressure block. The valve seat includes an axial through hole, and at least part of the inner bushing is arranged in the axial through hole. The sealing ring is arranged between an outer side of the inner bushing and the valve seat. The valve seat includes a first stepped portion, and a lower end surface of the pressure block is abutted against the first stepped portion and/or the sealing ring.
    Type: Grant
    Filed: October 26, 2023
    Date of Patent: June 3, 2025
    Assignee: ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO., LTD.
    Inventors: Ming Lv, Baijiang Qian
  • Patent number: 12234916
    Abstract: An electric valve includes a valve body component, a valve seat component, and a valve core component. The valve core component comprises a valve core. The valve core includes a body portion and a lower section, and the lower section is annular. A transition portion is included between the body portion and the lower section. The transition portion includes a first transition section connected with the lower section. An outer diameter of an upper end of the first transition section is greater than an outer diameter of a lower end of the first transition section.
    Type: Grant
    Filed: October 26, 2023
    Date of Patent: February 25, 2025
    Assignee: ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO., LTD.
    Inventors: Ming Lv, Baijiang Qian
  • Publication number: 20240068574
    Abstract: An electric valve includes a valve seat component, and a valve core component. The valve seat component includes a valve seat and a sealing ring. The valve core component includes a valve core. The valve core includes a lower section, and the lower section is annular. The valve seat component further includes an inner bushing and a pressure block. The valve seat includes an axial through hole, and at least part of the inner bushing is arranged in the axial through hole. The sealing ring is arranged between an outer side of the inner bushing and the valve seat. The valve seat includes a first stepped portion, and a lower end surface of the pressure block is abutted against the first stepped portion and/or the sealing ring.
    Type: Application
    Filed: October 26, 2023
    Publication date: February 29, 2024
    Applicant: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP CO., LTD.
    Inventors: Ming Lv, Baijiang Qian
  • Publication number: 20240060567
    Abstract: An electric valve includes a valve body component, a valve seat component, and a valve core component. The valve core component comprises a valve core. The valve core includes a body portion and a lower section, and the lower section is annular. A transition portion is included between the body portion and the lower section. The transition portion includes a first transition section connected with the lower section. An outer diameter of an upper end of the first transition section is greater than an outer diameter of a lower end of the first transition section.
    Type: Application
    Filed: October 26, 2023
    Publication date: February 22, 2024
    Applicant: ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO., LTD.
    Inventors: Ming Lv, Baijiang Qian
  • Patent number: 11835145
    Abstract: An electric valve, including a valve body part, a valve seat part, and a valve core part. The valve core part is provided in an inner cavity of the valve body part. The valve core part comprises a valve core. The valve core comprises a lower segment portion. The valve base part comprises a first sealing portion. An end of the lower segment portion can be abutted against or separated from the first sealing portion. The valve body part comprises a bushing part. The valve core part comprises a second sealing portion. The diameter D1 of the axial projection loop of the outer edge of the second sealing portion on the cross section of the lower segment portion, the outer diameter D2 of the lower segment portion, and the inner diameter D3 of the lower segment portion, satisfy: 0.2 mm2?D1*(D2?D3)?6 mm2.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: December 5, 2023
    Assignee: ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO., LTD.
    Inventors: Ming Lv, Baijiang Qian
  • Publication number: 20220049773
    Abstract: An electric valve, including a valve body part, a valve seat part, and a valve core part. The valve core part is provided in an inner cavity of the valve body part. The valve core part comprises a valve core. The valve core comprises a lower segment portion. The valve base part comprises a first sealing portion. An end of the lower segment portion can be abutted against or separated from the first sealing portion. The valve body part comprises a bushing part. The valve core part comprises a second sealing portion. The diameter D1 of the axial projection loop of the outer edge of the second sealing portion on the cross section of the lower segment portion, the outer diameter D2 of the lower segment portion, and the inner diameter D3 of the lower segment portion, satisfy: 0.2 mm2?D1*(D2?D3)?6 mm2.
    Type: Application
    Filed: April 2, 2020
    Publication date: February 17, 2022
    Applicant: Zhejiang Sanhua Climate and Appliance Controls Group Co., Ltd.
    Inventors: Ming LV, Baijiang Qian