公开(公告)号：US11519656B2

公开(公告)日：2022-12-06

申请号：US16817227

申请日：2020-03-12

Applicant: Ocean Research Center of Zhoushan, Zhejiang University ,  Zhejiang University

Inventor： Yong Cai ,  Shuo Liu ,  Zhijian Yang ,  Kaiyou Jiang ,  Wanglin Lin ,  Yu Zhang ,  Lei Chen ,  Zhiyong Sun ,  Fan Ding ,  Bo Zhang ,  Kai Qiao ,  Hao Wang

IPC: F25D3/11 ,  A23L3/375 ,  F25D29/00 ,  B63B35/24

Abstract: A high-precision control system and method for shipborne cryogenic flash freezing of an aquatic product using liquid nitrogen is described. The system may include a main control system, a display unit, a liquid nitrogen supply system, a valve control unit, an acquisition unit, and a power unit. A flash freezing process is divided into four stages: a precooling stage, a flash freezing stage, a deep freezing stage, and a thermal insulation stage. Different cooling rates and flash freezing times are used for different stages, where a cooling rate is used in the flash freezing stage is the highest, a cooling rate used in the deep freezing stage is next, a cooling rate used in the precooling stage is the lowest, and an ambient temperature in a device is kept stable in the thermal insulation stage.

公开(公告)号：US11993013B2

公开(公告)日：2024-05-28

申请号：US17578398

申请日：2022-01-18

Applicant: Zhejiang University

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

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

CPC classification number: B29C64/209 ,  B29C64/232 ,  B29C64/236 ,  B29C64/245 ,  B29C64/35 ,  B33Y30/00 ,  B33Y40/10

Abstract: 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：US20220134654A1

公开(公告)日：2022-05-05

申请号：US17578398

申请日：2022-01-18

Applicant: Zhejiang University

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

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

Abstract: 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.