Patents by Inventor Yicai Liu

Yicai 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).

  • Automatic oil level retention system for compressor and method for controlling same
    Patent number: 11686514
    Abstract: An automatic oil level retention system for a compressor and a method for controlling a same, including: a normal oil return mode and an auxiliary oil return mode. When a lubricating oil liquid level monitored by a liquid level detection unit in real time is above a required liquid level height, the system initiates only the normal oil return mode; and when the lubricating oil liquid level monitored by the liquid level detection unit in real time is below the required liquid level height, the system initiates the auxiliary oil return mode, and the auxiliary oil return mode is closed and the normal oil return mode is initiated after the lubricating oil liquid level monitored in real time is lifted above the required liquid level height.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: June 27, 2023
    Assignee: GUANGDONG GIWEE TECHNOLOGY CO. LTD.
    Inventors: Ting Fang, Yicai Liu, Shiqiu Qi, Huandi Yang
  • AUTOMATIC OIL LEVEL RETENTION SYSTEM FOR COMPRESSOR AND METHOD FOR CONTROLLING SAME
    Publication number: 20220003468
    Abstract: An automatic oil level retention system for a compressor and a method for controlling a same, including: a normal oil return mode and an auxiliary oil return mode. When a lubricating oil liquid level monitored by a liquid level detection unit in real time is above a required liquid level height, the system initiates only the normal oil return mode; and when the lubricating oil liquid level monitored by the liquid level detection unit in real time is below the required liquid level height, the system initiates the auxiliary oil return mode, and the auxiliary oil return mode is closed and the normal oil return mode is initiated after the lubricating oil liquid level monitored in real time is lifted above the required liquid level height.
    Type: Application
    Filed: June 24, 2021
    Publication date: January 6, 2022
    Inventors: Ting Fang, Yicai Liu, Shiqiu Qi, Huandi Yang