公开(公告)号：US20240181707A1

公开(公告)日：2024-06-06

申请号：US18242281

申请日：2023-09-05

申请人： HANGZHOU CITY UNIVERSITY ,  ZHEJIANG UNIVERSITY

发明人： Zhen WANG ,  Jun YE ,  Yang ZHAO ,  Hongjia LU ,  Qichen GUO ,  Huiping TANG ,  Guan QUAN ,  Zhi DING

IPC分类号： B29C64/386

CPC分类号： B29C64/386 ,  B33Y50/00

摘要： A method for optimizing design and manufacture of a self-supporting structure based on multi-axis 3D printing are provided, which comprises the following steps: using a structural topology optimization method based on an SIMP model to achieve the optimal configuration design of a complex structure, converting an image into a binary image, and post-processing the result of topology optimization; determining an overhanging angle of a structure boundary, and determining the printing direction of different printing partitions according to the classification; performing integrated optimization of angle constraints; extracting structural information, establishing a 3D solid model, and then partitioning and slicing the model, and generating a printing path for self-supporting multi-axis 3D printing manufacturing. The present disclosure has the beneficial effects that the self-supporting structure is generated in the optimization process, no additional support is needed in the printing process.

公开(公告)号：US20240178767A1

公开(公告)日：2024-05-30

申请号：US18556358

申请日：2021-10-18

申请人： ZHEJIANG UNIVERSITY

发明人： Peng QIAN ,  Bo FENG ,  Dahai ZHANG ,  Yulin SI ,  Xiaodong LIU

IPC分类号： H02N2/18 ,  F03B17/06 ,  H10N35/00

CPC分类号： H02N2/185 ,  F03B17/06 ,  H10N35/101 ,  F05B2220/709 ,  F05B2240/37

摘要： Disclosed in the present invention is a dual-rotor microfluidic energy capturing and power generating device based on a piezoelectric effect. An inner ring of blades and an outer ring of blades are coaxially and movably sleeved, and rotate relatively. Sheet-like magnetic piezoelectric components and steel magnets are provided in an annular gap between the inner ring of blades and the outer ring of blades. Magnetic piezoelectric components are connected to an inner peripheral surface of the outer ring of blades, the magnetic piezoelectric components are magnetically repulsive to the steel magnets, and the outer sides of the magnetic piezoelectric components are axially arranged. The inner ring of blades and the outer ring of blades rotate relatively to drive the magnetic piezoelectric components and the steel magnets to rotate relatively, and further drive the magnetic piezoelectric components to oscillate to generate mechanical energy which is then converted into electric energy.

公开(公告)号：US20240177758A1

公开(公告)日：2024-05-30

申请号：US18434848

申请日：2024-02-07

申请人： ZHEJIANG UNIVERSITY

发明人： Bing CHEN ,  Xuecheng CUI ,  Dong LIU ,  Ran CHENG

IPC分类号： G11C11/22

CPC分类号： G11C11/2273 ,  G11C11/2255

摘要： The present application discloses a reading method and a reading circuit of FRAM. The method comprises: converting changing rates of voltage signals on bit lines of a memory cell and a reference cell in a FRAM array to be consistent with magnitudes of corresponding voltages by respective differential circuits, inputting the voltage signals into a sense amplifier, and reading a voltage difference by the sense amplifier. A reading circuit using this method comprises two differential circuit modules and one sense amplifier; the differential circuit module is used to differentiate the voltage signals on the bit lines with respect to time to obtain the change rates of the voltage signals on the bit lines with respect to time; the sense amplifier is used to amplify the signal difference processed by the differential circuit modules and convert the information stored in a memory cell into “0” and “1”.

公开(公告)号：US11993013B2

公开(公告)日：2024-05-28

申请号：US17578398

申请日：2022-01-18

申请人： Zhejiang University

发明人： Bin Zhang ,  Qi Li ,  Yichen Luo ,  Teng Yang ,  Bo Zhang ,  Liang Ma ,  Huayong Yang

IPC分类号： B29C64/209 ,  B29C64/232 ,  B29C64/236 ,  B29C64/245 ,  B29C64/35 ,  B33Y30/00 ,  B33Y40/10

CPC分类号： B29C64/209 ,  B29C64/232 ,  B29C64/236 ,  B29C64/245 ,  B29C64/35 ,  B33Y30/00 ,  B33Y40/10

摘要： A multi-nozzle concurrent printing system includes a plurality of extrusion type nozzle assemblies, a three-axial translation mechanism and an objective table. Each nozzle assembly is provided with a nozzle, a storage barrel and a temperature control module; the three-axial translation mechanism includes an X-axial translation unit, a Y-axial translation unit and a Z-axial translation unit, and the nozzle assemblies are mounted on the Z-axial translation unit; and there are a plurality of nozzle assemblies, the printing system is provided with a concurrent calibration sensor, and the concurrent calibration sensor is taken as an original point of a coordinate system of the printing system. The printing system is provided with the plurality of nozzle assemblies which can work cooperatively or sequentially, the printing mode is flexible and changeable, and non-uniform mixing system forming of materials can be realized; and stable output of the materials in a formal printing task is guaranteed.

公开(公告)号：US20240169674A1

公开(公告)日：2024-05-23

申请号：US18490790

申请日：2023-10-20

申请人： ZHEJIANG UNIVERSITY

发明人： Weiwei XU ,  Jiamin XU ,  Xiuchao WU ,  Zihan ZHU ,  Hujun BAO

IPC分类号： G06T17/20 ,  G06T5/92 ,  G06T7/13 ,  G06T7/40 ,  G06T7/80 ,  G06V10/56

CPC分类号： G06T17/205 ,  G06T5/92 ,  G06T7/13 ,  G06T7/40 ,  G06T7/80 ,  G06V10/56

摘要： Disclosed in the present invention is an indoor scene virtual roaming method based on reflection decomposition, the method includes: firstly, by means of three-dimensional reconstruction, obtaining a rough global triangular mesh model projection as an initial depth map, aligning depth edges to color edges, and converting the aligned depth map into a simplified triangular mesh; checking planes in the global triangular mesh model, and if a certain plane is a reflection plane, constructing a double-layer expression in a reflection area for each picture in which the reflection plane is visible, so as to correctly render the reflection effect on an object surface; and giving a virtual viewport, using neighborhood pictures and the triangular mesh to draw a picture of the virtual viewport, and for the reflection area, using foreground and background pictures and foreground and background triangular meshes to perform drawing.

公开(公告)号：US20240167634A1

公开(公告)日：2024-05-23

申请号：US18372564

申请日：2023-09-25

申请人： ZHEJIANG UNIVERSITY OF TECHNOLOGY

发明人： Yi MA ,  Chuanming LI ,  Xiaoling DENG ,  Xudong PENG ,  Xiangkai MENG ,  Jinbo JIANG

IPC分类号： F17C13/04

CPC分类号： F17C13/04 ,  F17C2203/0604 ,  F17C2203/0619 ,  F17C2203/066 ,  F17C2203/0663 ,  F17C2205/0323 ,  F17C2205/0394 ,  F17C2221/012

摘要： A bi-directional penetrating metal bottleneck structure of a type IV hydrogen storage tank is provided, which includes a metal valve seat, a plastic liner, and a fiber winding layer. A valve seat hole is formed on an inner side of the metal valve seat, and the metal valve seat includes an annular flange, a valve seat column section, and a valve seat extension. L-shaped through holes and radial penetrating holes are formed in the valve seat column section. The valve seat hole is an irregular through hole and is provided with an annular groove. The valve seat extension is provided with a winding inclined plane, a self-tightening conical surface, a circumferential groove, and axial penetrating holes. The plastic liner includes an inner plastic joint, an outer plastic joint, a tapered connecting section, L-shaped connectors, radial connectors, axial connectors, and a reinforcement section. A flared annular boss at an upper part of the inner plastic joint is tightly clamped and embedded in the annular groove, and a lower part of the inner plastic joint, the L-shaped connector and the radial connector enclose a “B”-shaped binding structure to wrap a lower part of the valve seat column section inside and outside. According to the present disclosure, binding fastening is achieved, a sealing effect is enhanced, and the reliability and stability of a connection between the plastic liner and the metal valve seat are ensured.

公开(公告)号：US20240166017A1

公开(公告)日：2024-05-23

申请号：US18087814

申请日：2022-12-23

申请人： ZHEJIANG UNIVERSITY OF TECHNOLOGY

发明人： Xi Shen ,  Jiangping Gu ,  Yuejin Huang ,  Huaqiang Jin ,  Zhe Sun ,  Jihui Zheng ,  Kang Li ,  Ling Shi ,  Wei Hang ,  Hongyu Chen

IPC分类号： B60H1/00 ,  G01M99/00

CPC分类号： B60H1/00585 ,  G01M99/007

摘要： Disclosed is a testing device and method for a service life of an air-conditioning compressor of a new energy vehicle running with pure gas. The testing device includes an alternative refrigeration system, a measurement and control system, and a testing environment room. A main refrigeration cycle system of the alternative refrigeration system runs with pure gas, gas of a testing compressor is discharged via a discharge throttle valve, and then enters a suction end via a suction throttle valve and an electronic expansion valve, and since there is no phase change, a heat exchange amount is small; adjustable ranges of the discharge throttle valve, the suction throttle valve and the electronic expansion valve are wide; and based on the system structure, a small refrigeration system can be used to test a compressor having high cooling capacity, and the system can quickly achieve a target working condition with a small amount of refrigerant.

公开(公告)号：US20240162751A1

公开(公告)日：2024-05-16

申请号：US18393684

申请日：2023-12-22

申请人： ZHEJIANG UNIVERSITY ,  JCET GROUP CO., LTD.

发明人： Xiaolei Zhu ,  Rushuo Tao ,  Chonghui Sun ,  Kun Yang ,  Cheng Yang

IPC分类号： H02J50/10 ,  H02J50/80 ,  H04B5/24 ,  H01L25/065

CPC分类号： H02J50/10 ,  H02J50/80 ,  H04B5/24 ,  H01L25/0657 ,  H01L2225/06531

摘要： Disclosed is an inductive coupling system and method for adaptive control of power transfer for a wireless three-dimensional stacked chip package. The system includes a slave chip and a master chip connected via inductive coupling; the system for adaptive control of power transfer herein shifts a load feedback voltage received by the slave chip into a feedback voltage data codeword through a level decision circuit, and the system can load the feedback voltage data codeword onto a data link of the system and feedback same to the master chip. In the present disclosure, the master chip includes a DPID control circuit controls a voltage-controlled oscillator and a frequency divider to adjust the frequency of an input clock in an energy transfer system so as to achieve adaptive control of the transmitting power of a transmitting chip.

公开(公告)号：US20240159435A1

公开(公告)日：2024-05-16

申请号：US18423332

申请日：2024-01-26

申请人： ZHEJIANG UNIVERSITY

发明人： Zhilin SUN ,  Chaoqun ZHAI ,  Yizhi SUN

IPC分类号： F25B39/04 ,  F28B1/02 ,  F28B9/08

CPC分类号： F25B39/04 ,  F28B1/02 ,  F28B9/08

摘要： A stepped self-convection condenser comprising a stepped heat absorbing pipe, a stepped steam pipe, a curved water collecting pipe, a condensed water collecting chamber and a heat insulation shell; the steam pipe is coaxially sleeved outside the heat absorbing pipe, and a pipe diameter satisfies a specific formula; cold water and steam flow in the heat absorbing pipe and the steam pipe, respectively, forming bifacial all-natural convection heat transfer inside and outside; layers of the sleeved pipeline are connected in series in a stepped staggered manner and placed on an inclined flat plate with a given slope; every two layers of stepped sleeved pipeline are connected by a detachable sleeved U-shaped pipe and a curved water collecting pipe; the outlet of the condensed water collecting chamber is provided with an air valve; the stepped sleeved pipeline and the condensed water collecting chamber are arranged in the heat insulation shell.

公开(公告)号：US11980844B2

公开(公告)日：2024-05-14

申请号：US17566659

申请日：2021-12-30

申请人： ZHEJIANG UNIVERSITY

发明人： Xiang Gao ,  Chenghang Zheng ,  Chang Liu ,  Can Zhou ,  You Zhang ,  Zhongyang Zhao ,  Yongxin Zhang ,  Yang Zhang ,  Qinwu Li ,  Weiguo Weng ,  Weihong Wu ,  Qingyi Li ,  Xiao Zhang ,  Tao Wang

IPC分类号： B01D53/14 ,  B01D53/18 ,  B01D53/78 ,  C01B17/80

CPC分类号： B01D53/1406 ,  B01D53/1412 ,  B01D53/145 ,  B01D53/1475 ,  B01D53/1493 ,  B01D53/185 ,  B01D53/78 ,  B01D2252/103 ,  B01D2257/504 ,  B01D2258/0283 ,  C01B17/806

摘要： The present invention relates to a method for carbon dioxide capture and concentration by partitioned multistage circulation based on mass transfer-reaction regulation. In the present invention, multiple means such as multistage circulating absorption, intelligent multi-factor regulation, pre-washing and cooling, inter-stage cooling, post-stage washing, slurry cleaning, cooling water waste heat utilization, small-particle-size and high-density spraying, external strengthening field such as a thermal field/ultrasonic field/electric field, and catalysis by composite catalyst are adopted, so that the target for low cost, low energy consumption, stability and high efficiency is realized. The secondary pollutants are effectively inhibited while carbon dioxide is efficiently captured; meanwhile, high-efficiency capture, low-energy desorption, and high-purity concentration of carbon dioxide are implemented. From top to bottom in sequence, the multistage circulation is used to remove aerosols, improves carbon capture efficiency, maintains absorption rate, concentrates solution, which reduces the carbon emission reduction cost.