Low-temperature pretreatment and transportation device for litchi

By designing a low-temperature pretreatment and transportation device for lychees, an ice maker and circulation system were used to achieve efficient heat exchange between lychees and cold water, solving the problems of slow cooling speed and increased condenser load, ensuring rapid cooling of lychees, and facilitating long-distance transportation and storage.

CN122107665APending Publication Date: 2026-05-29GUANGDONG UNIV OF PETROCHEMICAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG UNIV OF PETROCHEMICAL TECH
Filing Date
2026-02-03
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In the existing technology, during the low-temperature precooling process of lychees, the heat exchange between the cooling water and the fruit is insufficient, resulting in a slow cooling rate, increased condenser load, and insufficient supply of low-temperature water, which affects the long-distance transportation and storage of lychees.

Method used

A low-temperature pretreatment and transportation device for lychees is adopted, which combines an ice maker, a heat-absorbing hollow sleeve, and a circulating guide pipe. The water source is cooled by making ice, and the water source is kept at a low temperature by stirring and circulating it through the heat-absorbing hollow sleeve. The lychees are fully contacted with the cold water and cooled layer by layer through a multi-layer sleeve and support plate structure.

Benefits of technology

This improved the cooling speed of lychees, reduced the load on the condenser, maintained a continuous output of cooling water, and ensured that the lychees quickly reached a low temperature, facilitating long-distance transportation and storage.

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Abstract

The present application relates to the field of low-temperature transportation of litchi, in particular to a low-temperature pretreatment transportation device for litchi, which comprises a litchi low-temperature treatment box one, a condenser fixedly installed on the back of the litchi low-temperature treatment box one, a water source cooling box fixedly installed on the bottom surface of the litchi low-temperature treatment box one, a litchi low-temperature treatment box two movably sleeved on the inner side wall of the litchi low-temperature treatment box one, and a support frame fixedly installed on the bottom of the litchi low-temperature treatment box one at the edge position of both sides. After the double-circulation flow guide pipes circulate and infuse the water source in the heat preservation box into the heat absorption hollow sleeve, motor two is used to drive the transmission clench ring, the transmission sleeve rotates in the limiting ring, and the heat absorption hollow sleeve at one end of the transmission sleeve rotates and stirs in the water source cooling box, so that the heat absorption hollow sleeve stirs the water source in the water source cooling box, and the temperature of the water source in the water source cooling box is lowered.
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