Patents by Inventor Chengbin ZHANG

Chengbin ZHANG 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: 11950393
    Abstract: The invention provides a two-phase flow active and passive multi-level data center cabinet cooling device and method, wherein the system includes a cabinet cooling device, a condensate system, a waste heat recovery device, a liquid reservoir, a liquid pump, a gas chamber, a fluid working medium, and a corresponding pipeline. The system comprise a closed loop, the loop is filled with nitrogen to maintain a low pressure state, and the pipeline fluid is driven by the liquid pump to flow; the gas chamber maintains a relatively stable air pressure in the two-phase flow loop; the liquid reservoir is connected with the gas chamber, providing an enough gas space to make a phase change occur more easily; the cabinet cooling device can be switched between an active mode and a passive mode to minimize PUE under good heat dissipation capability.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: April 2, 2024
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Xu Liu, Junming Du, Haitao Jiang, Chengbin Zhang, Dongping Yin
  • Patent number: 11889663
    Abstract: An immersion dual-cycle multi-mode liquid cooling regulation system and method for a data center comprises data center cabinets, a microchannel condensation heat exchanger, a plate heat exchanger, waste heat recovery devices, a cooling water storage tank, a fluorinated liquid storage tank, a liquid pump, a fluorinated liquid, pipelines, and pipeline valves. The system switches between single-phase and two-phase circulation loops according to the working power consumption of a server and the thermophysical property of a cooling working medium, and realizes flexible adjustment and control according to the cooling demand of the cabinet, the load magnitude and the working environment, thus avoiding the waste of resources caused by different loads in the data center; and cooling water flows through the waste heat recovery devices to recover heat, to reduce the electricity consumption of the system and greatly improve the utilization efficiency of cooling capacity.
    Type: Grant
    Filed: September 14, 2023
    Date of Patent: January 30, 2024
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Xu Liu, Ao Li, Jiangfeng Yao, Zilong Deng, Chengbin Zhang
  • Publication number: 20230156963
    Abstract: The invention provides a two-phase flow active and passive multi-level data center cabinet cooling device and method, wherein the system includes a cabinet cooling device, a condensate system, a waste heat recovery device, a liquid reservoir, a liquid pump, a gas chamber, a fluid working medium, and a corresponding pipeline. The system constitute a closed loop, the loop is filled with nitrogen to maintain a low pressure state, and the pipeline fluid is driven by the liquid pump to flow; the gas chamber maintains a relatively stable air pressure in the two-phase flow loop; the liquid reservoir is connected with the gas chamber, providing an enough gas space to make a phase change occur more easily; the cabinet cooling device can be switched between an active mode and a passive mode to minimize PUE under good heat dissipation capability.
    Type: Application
    Filed: June 25, 2021
    Publication date: May 18, 2023
    Applicant: SOUTHEAST UNIVERSITY
    Inventors: Xu LIU, Junming DU, Haitao JIANG, Chengbin ZHANG, Dongping YIN
  • Patent number: 11611353
    Abstract: A quantizer for a sigma-delta modulator, a sigma-delta modulator, and a method of shaping noise are provided. The quantizer includes: an integrator configured to generate, in a Kth sampling period, a quantization error signal for a Kth period according to an internal signal, a quantization error signal for a (K?1)th period, a filtered quantization error signal for the (K?1)th period and a filtered quantization error signal for a (K?2)th period; an integrating capacitor configured to store the quantization error signal for the Kth period, to weight the internal signal in a (K+1)th sampling period; a passive low-pass filter configured to acquire the quantization error signal for the Kth period in a Kth discharge period, and feed back the filtered quantization error signal to the integrator in a (K+1)th sampling period and a (K+2)th sampling period; and a comparator configured to quantize the quantization error signal for the Kth period.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: March 21, 2023
    Assignee: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Kunyu Wang, Li Zhou, Jie Chen, Minghui Chen, Ming Chen, Wenjing Xu, Chengbin Zhang
  • Patent number: 11597796
    Abstract: An ionic aqueous epoxy curing agent, a preparation method therefor and the use thereof. The aqueous epoxy curing agent is prepared by reacting the following raw materials in parts by weight: a) 1 part of a polyepoxy compound, b) 1.3-6 parts of a multifunctional compound, c) 0.2 to 1.25 parts of a monoepoxy compound, and d) 0.01 to 0.23 parts of a sultone, wherein the multifunctional compound has four or more active hydrogens. The curing agent obtained has a good hydrophilic effect and very good thinning performance, the paint film prepared by mixing same with an epoxy dispersion has the following advantages: excellent salt spray resistance and water resistance, strong adhesion, high hardness, etc.; in addition, the preparation process of the curing agent is simple, the conditions are mild, and room temperature curing is carried out.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: March 7, 2023
    Assignees: WANHUA CHEMICAL GROUP CO., LTD., WANHUA CHEMICAL (NINGBO) CO., LTD.
    Inventors: Xiao Wang, Xueshun Ji, Weifei Li, Rui Qu, Chengbin Zhang, Junying Deng, Jiakuan Sun, Bin Zhou, Qiao Wang, Ji Gong
  • Publication number: 20220416808
    Abstract: A quantizer for a sigma-delta modulator, a sigma-delta modulator, and a method of shaping noise are provided. The quantizer includes: an integrator configured to generate, in a Kth sampling period, a quantization error signal for a Kth period according to an internal signal, a quantization error signal for a (K?1)th period, a filtered quantization error signal for the (K?1)th period and a filtered quantization error signal for a (K?2)th period; an integrating capacitor configured to store the quantization error signal for the Kth period, to weight the internal signal in a (K+1)th sampling period; a passive low-pass filter configured to acquire the quantization error signal for the Kth period in a Kth discharge period, and feed back the filtered quantization error signal to the integrator in a (K+1)th sampling period and a (K+2)th sampling period; and a comparator configured to quantize the quantization error signal for the Kth period.
    Type: Application
    Filed: June 4, 2021
    Publication date: December 29, 2022
    Inventors: Kunyu WANG, Li ZHOU, Jie CHEN, Minghui CHEN, Ming CHEN, Wenjing XU, Chengbin ZHANG
  • Publication number: 20220033569
    Abstract: An ionic aqueous epoxy curing agent, a preparation method therefor and the use thereof. The aqueous epoxy curing agent is prepared by reacting the following raw materials in parts by weight: a) 1 part of a polyepoxy compound, b) 1.3-6 parts of a multifunctional compound, c) 0.2 to 1.25 parts of a monoepoxy compound, and d) 0.01 to 0.23 parts of a sultone, wherein the multifunctional compound has four or more active hydrogens. The curing agent obtained has a good hydrophilic effect and very good thinning performance, the paint film prepared by mixing same with an epoxy dispersion has the following advantages: excellent salt spray resistance and water resistance, strong adhesion, high hardness, etc.; in addition, the preparation process of the curing agent is simple, the conditions are mild, and room temperature curing is carried out.
    Type: Application
    Filed: April 19, 2019
    Publication date: February 3, 2022
    Inventors: Xiao WANG, Xueshun JI, Weifei LI, Rui QU, Chengbin ZHANG, Junying DENG, Jiakuan SUN, Bin ZHOU, Qiao WANG, Ji GONG