Patents by Inventor Lingfeng GAN

Lingfeng GAN 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).

  • Diffusion muffling device, diffusion resonance muffling device, full-frequency diffusion muffling device, muffling system for ventilation channel, and muffling method using the same
    Patent number: 11536487
    Abstract: Embodiments of the present disclosure provide a diffusion muffling device, a diffusion resonance muffling device, a full-frequency diffusion muffling device, a muffling system for a ventilation channel, and a muffling method using the same, which include a plurality of diffusion muffling units disposed in the ventilation extension direction of the ventilation channel, wherein the plurality of diffusion muffling units are arranged in parallel in a direction with a predetermined angle between the direction and the ventilation extension direction of the ventilation channel, and a muffling passage is formed between each two adjacent diffusion muffling units, wherein each of the diffusion muffling units includes at least one diffuser, and each diffuser includes a plurality of convex portions so that sound waves entering the muffling passage are reflected multiple times in the muffling passage by the plurality of convex portions and then sound is attenuated.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: December 27, 2022
    Assignee: ZHENG SHENG ENVIRONMENTAL TECHNOLOGY CO., LTD.
    Inventors: Xiaojie Zhang, Lingfeng Gan, Yuandong Wang, Jian Kang
  • DIFFUSION MUFFLING DEVICE, DIFFUSION RESONANCE MUFFLING DEVICE, FULL-FREQUENCY DIFFUSION MUFFLING DEVICE, MUFFLING SYSTEM FOR VENTILATION CHANNEL, AND MUFFLING METHOD USING THE SAME
    Publication number: 20210404702
    Abstract: Embodiments of the present disclosure provide a diffusion muffling device, a diffusion resonance muffling device, a full-frequency diffusion muffling device, a muffling system for a ventilation channel, and a muffling method using the same, which include a plurality of diffusion muffling units disposed in the ventilation extension direction of the ventilation channel, wherein the plurality of diffusion muffling units are arranged in parallel in a direction with a predetermined angle between the direction and the ventilation extension direction of the ventilation channel, and a muffling passage is formed between each two adjacent diffusion muffling units, wherein each of the diffusion muffling units includes at least one diffuser, and each diffuser includes a plurality of convex portions so that sound waves entering the muffling passage are reflected multiple times in the muffling passage by the plurality of convex portions and then sound is attenuated.
    Type: Application
    Filed: April 17, 2017
    Publication date: December 30, 2021
    Inventors: Xiaojie ZHANG, Lingfeng GAN, Yuandong WANG, Jian KANG