Patents by Inventor Changqiao Bao

Changqiao Bao 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: 11885327
    Abstract: Embodiments of the present disclosure provide a flow control valve, an oil pump assembly having the flow control valve, and a scroll compressor. The flow control valve includes: a valve body having an inlet configured for a fluid to flow into the valve body and an outlet configured for the fluid to flow out of the valve body; a passage provided between the inlet and the outlet and extending in a predetermined direction, an area of a cross section of the passage perpendicular to the predetermined direction being negatively correlated with a distance from the cross section to the inlet; a valve element slidably provided in the passage, a flow area between the valve element and an inner wall of the passage is negatively correlated with the distance from the valve element to the inlet; and an elastic member provided in the valve body to apply an elastic force on the valve element so as to move the valve element in a direction toward the inlet.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: January 30, 2024
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Meng Wang, Changqiao Bao, Kailai Zhang
  • Patent number: 11396873
    Abstract: Embodiments of the present disclosure provide a scroll compressor. The scroll compressor includes: a fixed scroll having an end plate and a fixed scroll wrap extending from the end plate; an orbiting scroll having an orbiting scroll wrap, the orbiting scroll wrap being engaged with the fixed scroll wrap to form a plurality of compression chambers for compressing a medium; a channel formed in the end plate of the fixed scroll, the channel leading to one compression chamber of the plurality of compression chambers; and a valve provided on the end plate of the fixed scroll, and configured to open when a pressure in the one compression chamber is higher than a predetermined pressure threshold so as to allow the medium in the one compression chamber to flow out of the one compression chamber through the channel. The scroll compressor according to the embodiments of the present disclosure, for example, can improve the performance of the scroll compressor.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: July 26, 2022
    Assignee: DANFOSS (TIANJIN) LTD.
    Inventors: Changqiao Bao, Kun Qian, Wenhu Yao, Xueyou Zhou, Gang Yao, Zaiwang Wang, Quanping Lei
  • Publication number: 20220196015
    Abstract: Embodiments of the present disclosure provide a flow control valve, an oil pump assembly having the flow control valve, and a scroll compressor. The flow control valve includes: a valve body having an inlet configured for a fluid to flow into the valve body and an outlet configured for the fluid to flow out of the valve body; a passage provided between the inlet and the outlet and extending in a predetermined direction, an area of a cross section of the passage perpendicular to the predetermined direction being negatively correlated with a distance from the cross section to the inlet; a valve element slidably provided in the passage, a flow area between the valve element and an inner wall of the passage is negatively correlated with the distance from the valve element to the inlet; and an elastic member provided in the valve body to apply an elastic force on the valve element so as to move the valve element in a direction toward the inlet.
    Type: Application
    Filed: December 23, 2021
    Publication date: June 23, 2022
    Inventors: Meng Wang, Changqiao Bao, Kailai Zhang
  • Publication number: 20210199111
    Abstract: Embodiments of the present disclosure provide a scroll compressor. The scroll compressor includes: a fixed scroll having an end plate and a fixed scroll wrap extending from the end plate; an orbiting scroll having an orbiting scroll wrap, the orbiting scroll wrap being engaged with the fixed scroll wrap to form a plurality of compression chambers for compressing a medium; a channel formed in the end plate of the fixed scroll, the channel leading to one compression chamber of the plurality of compression chambers; and a valve provided on the end plate of the fixed scroll, and configured to open when a pressure in the one compression chamber is higher than a predetermined pressure threshold so as to allow the medium in the one compression chamber to flow out of the one compression chamber through the channel. The scroll compressor according to the embodiments of the present disclosure, for example, can improve the performance of the scroll compressor.
    Type: Application
    Filed: December 23, 2020
    Publication date: July 1, 2021
    Inventors: Changqiao Bao, Kun Qian, Wenhu Yao, Xueyou Zhou, Gang Yao, Zaiwang Wang, Quanping Lei