A kind of liquid ice precooling device for agricultural products

Abstract

The invention discloses an ice slurry pre-cooling device for agricultural products. The ice slurry pre-cooling device comprises a long-groove-shaped ice slurry groove, an ice slurry making unit, a transmission unit and a display unit, wherein the long-groove-shaped ice slurry groove is provided with a heat preservation layer, the ice slurry making unit is located on one side of the ice slurry groove, the transmission unit is located in the ice slurry groove and used for bearing and continuously conveying to-be-cooled objects, and the display unit is used for monitoring and displaying the temperature in the ice slurry groove. A space in the ice slurry groove is divided into a pre-cooling space body and a backflow space body by a filtering element. The pre-cooling space body is filled with ice slurry with the temperature being 0 DEG C-1 DEG C. The backflow space body collects filtered backflow cold water. The ice slurry making unit comprises a condensing unit, a subcooler and a de-cold machine, wherein the condensing unit is used for refrigeration, the subcooler is used for heat exchange of condensing agents and the backflow cold water, and the de-cold machine is connected with the subcooler and used for making ice slurry through subcooled water. By means of the ice slurry pre-cooling device for the agricultural products, pre-cooling is conducted by sufficiently taking advantage of latent heat of phase change of ice crystals, and compared with traditional water pre-cooling devices, the pre-cooling efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the field of pre-cooling in post-harvest cold chain logistics of agricultural products, and in particular relates to a liquid ice pre-cooling device. Background technique [0002] Pre-cooling is the operation process of rapidly cooling the picked fruits and vegetables to the temperature required by the process by using low temperature treatment method. Pre-cooling of fruits and vegetables is not only beneficial to reduce the rate of spoilage during the storage and transportation of fruits and vegetables, but also realizes energy-saving operation of subsequent refrigeration devices. According to the pre-cooling method, it can be divided into differential pressure pre-cooling, cold water pre-cooling, ice pre-cooling, ice water pre-cooling, vacuum pre-cooling, etc. The existing ice-water pre-cooling device is to place ice cubes in a water tank, A mixture of ice and water is formed. This method does not have a follow-up cold sourc...

AI Technical Summary

Problems solved by technology

According to the pre-cooling method, it can be divided into differential pressure pre-cooling, cold water pre-cooling, ice pre-cooling, ice water pre-cooling, vacuum pre-cooling, etc. The existing ice-water pre-cooling device is to place ice cubes in a water tank, A mixture of ice and water is formed. This method has no follow-up cold source as a pre-cooling guarantee, and cannot form automated and mechanical operations.

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