The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2022
Filed:
Mar. 12, 2020
Ocean Research Center of Zhoushan, Zhejiang University, Zhoushan, CN;
Zhejiang University, Zhejiang, CN;
Yong Cai, Zhoushan, CN;
Shuo Liu, Zhoushan, CN;
Zhijian Yang, Zhoushan, CN;
Kaiyou Jiang, Zhoushan, CN;
Wanglin Lin, Zhoushan, CN;
Yu Zhang, Zhoushan, CN;
Lei Chen, Zhoushan, CN;
Zhiyong Sun, Zhoushan, CN;
Fan Ding, Zhoushan, CN;
Bo Zhang, Zhoushan, CN;
Kai Qiao, Zhoushan, CN;
Hao Wang, Zhoushan, CN;
Ocean Research Center of Zhoushan, Zhejiang University, Zhoushan, CN;
Zhejiang University, Hangzhou, CN;
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.