Ultralow-temperature freezing cabin and freezing method for catches of marine fishing vessel

Abstract

The invention discloses an ultralow-temperature freezing cabin for catches of a marine fishing vessel, which comprises a freezing cabin body and a freezing frame, a left partition plate, a right partition plate and an upper partition plate are arranged in the freezing cabin body, a freezing chamber is defined by the left partition plate, the right partition plate and the upper partition plate, gaps among the left partition plate, the right partition plate and the freezing cabin body form a left air duct and a right air duct, air inlet holes are formed in the left partition plate and the right partition plate, a gap between the upper partition plate and the freezing cabin forms an axial flow fan mounting chamber, an axial flow fan is arranged in the axial flow fan mounting chamber, the axial flow fan mounting chamber communicates with the left air duct and the right air duct, the freezing frame comprises a supporting frame and a shelf, a refrigerant evaporation coil is arranged below the shelf, and a jacking mechanism is arranged in the shelf. The ultralow-temperature freezing cabin for the catches of the marine fishing vessel is convenient to use and maintain, quick in freezing, uniform in internal temperature distribution, good in freezing effect and convenient in unloading. The invention further discloses an ultralow-temperature freezing preservation method for the catches of the marine fishing vessel, the freezing effect is good, the original quality of the catches can be kept, and economic benefits are obvious.

Description

technical field [0001] The invention relates to the technical field of ultra-low temperature freezing and preservation for sea fishing vessels, in particular to an ultra-low temperature freezing cabin and freezing method for fish catches of sea fishing vessels. Background technique [0002] The continuous growth of marine fishery fishing capacity and intensity has greatly exceeded the regeneration capacity of offshore fishery resources, and my country's offshore fishery resources have experienced obvious depletion. In the 21st century, due to the changes in the structure of offshore fishery resources, the mode of marine fishing operations has also changed; the production fishery has shifted from the coast and the offshore to the far sea beyond 100 nautical miles; 15 to 45 days, this change also puts forward new requirements for the quality and freshness of the catch. [0003] Existing freezing cabins usually include a cabin and a freezing shelf fixed in the cabin. Refrigera...

AI Technical Summary

Problems solved by technology

The quick-freezing cabin has the following defects: (1) The quick-freezing cabin is a closed space, the air can only flow naturally, and the heat exchange efficiency is low, resulting in a slow freezing speed; (2) The colder air drops and concentrates at the bottom of the cabin due to its high density , and the hotter air rises and concentrates on the top of the cabin due to its low density, resulting in uneven heat distribution in the cabin and uneven internal temperature distribution, which affects the freezing effect; The fish catch is placed in the quick-freezing tray, and the quick-freezing tray is put in contact with it on the quick-freezing plate, and the quick-freezing tray or the quick-freezing plate will inevitably be stained with water. When the water freezes, the quick-freezing plate and the quick-freezing plate will be firmly frozen together, which makes it very difficult to take and unload the quick-freezing tray

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