Patents by Inventor Changhai QIN

Changhai QIN 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: 12195360
    Abstract: A high-efficiency solar multi-layer evaporative seawater desalination device includes a transparent housing. In the device, wedge-shaped recesses are formed on an outer wall of the transparent housing; during seawater desalination, seawater is injected into evaporation trays and sunlight is irradiated on the evaporation trays through the transparent housing; the transparent housing is made of a transparent plastic material, such that sunlight can directly enter the transparent housing and increase a temperature therein to speed up the evaporation; the wedge-shaped recesses are on a shady surface; during desalination, seawater in the evaporation trays absorbs heat and evaporates to form water vapor, such that there is a given temperature difference between the water vapor and the outside; and a lower part of the wedge-shaped recess can serve as a condensation surface, the water vapor condenses on the transparent housing or at the wedge-shaped recess.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: January 14, 2025
    Assignee: China Institute of Water Resources and Hydropower Research
    Inventors: Shan Jiang, Yongnan Zhu, Jiaqi Li, Jianhua Wang, Yong Zhao, Guohua He, Qingming Wang, Lizhen Wang, Jiaqi Zhai, Haihong Li, Fan He, Changhai Qin, Yong Wang
  • Publication number: 20240300829
    Abstract: A high-efficiency solar multi-layer evaporative seawater desalination device includes a transparent housing. In the device, wedge-shaped recesses are formed on an outer wall of the transparent housing; during seawater desalination, seawater is injected into evaporation trays and sunlight is irradiated on the evaporation trays through the transparent housing; the transparent housing is made of a transparent plastic material, such that sunlight can directly enter the transparent housing and increase a temperature therein to speed up the evaporation; the wedge-shaped recesses are on a shady surface; during desalination, seawater in the evaporation trays absorbs heat and evaporates to form water vapor, such that there is a given temperature difference between the water vapor and the outside; and a lower part of the wedge-shaped recess can serve as a condensation surface, the water vapor condenses on the transparent housing or at the wedge-shaped recess.
    Type: Application
    Filed: February 23, 2022
    Publication date: September 12, 2024
    Applicant: China Institute of Water Resources and Hydropower Research
    Inventors: Shan JIANG, Yongnan ZHU, Jiaqi LI, Jianhua WANG, Yong ZHAO, Guohua HE, Qingming WANG, Lizhen WANG, Jiaqi ZHAI, Haihong LI, Fan HE, Changhai QIN, Yong WANG