Patents by Inventor Chenghua Hong

Chenghua Hong 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).

  • Check valve for preventing air backflow in a modular cooling system
    Patent number: 10888018
    Abstract: A cooling system for electrical and electronic devices for hot swapping of a fan module without affecting cooling efficiency due to air backflow, preventing stalling of newly installed exhaust device due to reverse rotation. A check valve assembly having an inlet side frame member, an outlet side frame member, and one or more non-symmetrical valve flaps, each flap having a movable part and a fixed part. The outlet side frame allows the flaps to open under suction pressure on side of the outlet side frame, the inlet side frame disallows the flaps to open under suction pressure on side of the inlet side frame, allowing air to flow in one direction from inlet side frame side to outlet side frame side only. The check valve assembly can be independent of the exhaust device. The check valve assembly can prevent backflow of air during hot swapping of the exhaust device.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: January 5, 2021
    Assignee: Fortinet, Inc.
    Inventors: Qian Yu, Chenghua Hong, Keqin Chen
  • CHECK VALVE FOR PREVENTING AIR BACKFLOW IN A MODULAR COOLING SYSTEM
    Publication number: 20180080571
    Abstract: A cooling system for electrical and electronic devices for hot swapping of a fan module without affecting cooling efficiency due to air backflow, preventing stalling of newly installed exhaust device due to reverse rotation. A check valve assembly having an inlet side frame member, an outlet side frame member, and one or more non-symmetrical valve flaps, each flap having a movable part and a fixed part. The outlet side frame allows the flaps to open under suction pressure on side of the outlet side frame, the inlet side frame disallows the flaps to open under suction pressure on side of the inlet side frame, allowing air to flow in one direction from inlet side frame side to outlet side frame side only. The check valve assembly can be independent of the exhaust device. The check valve assembly can prevent backflow of air during hot swapping of the exhaust device.
    Type: Application
    Filed: September 19, 2016
    Publication date: March 22, 2018
    Applicant: Fortinet, Inc.
    Inventors: Qian Yu, Chenghua Hong, Keqin Chen