Patents by Inventor Qiaofeng Liu

Qiaofeng 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).

  • Patent number: 11840122
    Abstract: A thermal management system includes a cooling liquid circulation flow path, a refrigerant circulation flow path and a first heat exchanger. The first heat exchanger includes a first heat exchange portion and a second heat exchange portion. The cooling liquid circulation flow path includes a first heat exchange assembly, a second heat exchange assembly and a first branch. The thermal management system has a heating mode. After passing through the first heat exchange assembly, one path of the cooling liquid flows to the first branch, and another path of the cooling liquid flows to the second heat exchange assembly. The cooling liquid after flowing through the first branch and after flowing through the second heat exchange assembly merge and then flow to the first heat exchange portion. As a result, the number of heat exchangers used by the thermal management system to recover waste heat is reduced.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: December 12, 2023
    Assignee: HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.
    Inventors: Kuiyang Wang, Qiaofeng Liu, Junqi Dong, Shiwei Jia
  • Publication number: 20230391160
    Abstract: A thermal management system includes a cooling liquid circulation flow path, a refrigerant circulation flow path and a first heat exchanger. The first heat exchanger includes a first heat exchange portion and a second heat exchange portion. The cooling liquid circulation flow path includes a first heat exchange assembly, a second heat exchange assembly and a first branch. The thermal management system has a heating mode. After passing through the first heat exchange assembly, one path of the cooling liquid flows to the first branch, and another path of the cooling liquid flows to the second heat exchange assembly. The cooling liquid after flowing through the first branch and after flowing through the second heat exchange assembly merge and then flow to the first heat exchange portion. As a result, the number of heat exchangers used by the thermal management system to recover waste heat is reduced.
    Type: Application
    Filed: August 20, 2023
    Publication date: December 7, 2023
    Inventors: KUIYANG WANG, QIAOFENG LIU, JUNQI DONG, SHIWEI JIA
  • Patent number: 11828507
    Abstract: The present application discloses an air conditioning system and a control method therefore. An intermediate heat exchanger can include a first heat exchange portion and a second heat exchange portion, a first end of the first heat exchange portion is in communication with an inlet of a compressor, a second end of the first heat exchange portion is communicable with an outlet of a second heat exchanger and/or a second end of the first heat exchanger, a first end of the second heat exchange portion is communicable with a first end of the first heat exchanger, and a second end of the second heat exchange portion is communicable with an inlet of the second heat exchanger and/or an outlet of the compressor. In the refrigeration mode, the first branch can have an adjustable amount of flow.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: November 28, 2023
    Assignee: HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.
    Inventors: Qiaofeng Liu, Junqi Dong, Shiwei Jia
  • Publication number: 20220072927
    Abstract: A thermal management system includes a cooling liquid circulation flow path, a refrigerant circulation flow path and a first heat exchanger. The first heat exchanger includes a first heat exchange portion and a second heat exchange portion. The cooling liquid circulation flow path includes a first heat exchange assembly, a second heat exchange assembly and a first branch. The thermal management system has a heating mode. After passing through the first heat exchange assembly, one path of the cooling liquid flows to the first branch, and another path of the cooling liquid flows to the second heat exchange assembly. The cooling liquid after flowing through the first branch and after flowing through the second heat exchange assembly merge and then flow to the first heat exchange portion. As a result, the number of heat exchangers used by the thermal management system to recover waste heat is reduced.
    Type: Application
    Filed: September 16, 2020
    Publication date: March 10, 2022
    Inventors: KUIYANG WANG, QIAOFENG LIU, JUNQI DONG, SHIWEI JIA
  • Publication number: 20210260955
    Abstract: A heat pump system includes a compressor, a fluid switching device, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a flow regulating device and a throttle element. The second heat exchanger includes a first heat exchange portion and a second heat exchange portion. An outlet of the first heat exchange portion communicates with the throttle element. An inlet of the first heat exchange portion communicates with at least one of a second port of the third heat exchanger and an outlet of the fourth heat exchanger. An inlet of the second heat exchange portion communicates with the outlet of the first heat exchanger. An outlet of the second heat exchange portion communicates with an inlet of the compressor. In a heating mode, the function of the second heat exchanger is reduced, thereby the heating capacity of the heat pump system is improved.
    Type: Application
    Filed: October 15, 2019
    Publication date: August 26, 2021
    Inventors: JUNQI DONG, QIAOFENG LIU, SHIWEI JIA
  • Publication number: 20210010733
    Abstract: The present application discloses an air conditioning system and a control method therefore. An intermediate heat exchanger can include a first heat exchange portion and a second heat exchange portion, a first end of the first heat exchange portion is in communication with an inlet of a compressor, a second end of the first heat exchange portion is communicable with an outlet of a second heat exchanger and/or a second end of the first heat exchanger, a first end of the second heat exchange portion is communicable with a first end of the first heat exchanger, and a second end of the second heat exchange portion is communicable with an inlet of the second heat exchanger and/or an outlet of the compressor. In the refrigeration mode, the first branch can have an adjustable amount of flow. Performance of the air conditioning system can be enhanced.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 14, 2021
    Inventors: Qiaofeng LIU, Junqi Dong, Shiwei Jia
  • Patent number: D897946
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: October 6, 2020
    Inventor: Qiaofeng Liu