A freeze-drying and preservation device for raspberries

By using spiral cooling tubes and a roller tumbling structure in the raspberry freeze-drying equipment, combined with the design of vents and support rings, the problems of uneven freezing and fruit sticking are solved, achieving an efficient and uniform freeze-drying process and convenient discharge operation.

CN224420041UActive Publication Date: 2026-06-30ANHUI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
Filing Date
2025-06-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing freeze-drying equipment for raspberries suffers from uneven freezing, fruit sticking and clumping, and inconvenient discharge, making it difficult to meet the demands for high-efficiency and high-quality production.

Method used

It adopts a spiral cooling pipe and roller structure, combined with a motor-driven roller tumbling mechanism to achieve uniform cooling and automatic material discharge. By setting air vents and support rings on the outside of the roller, it ensures cold air penetration and fruit tumbling. The design of the locking mechanism makes it easy to open and close the door panel.

Benefits of technology

This method achieves uniform freeze-drying of raspberries, improves freeze-drying efficiency and finished product quality, solves the problems of uneven freezing and fruit sticking, and simplifies the discharge process.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a freeze-drying and preservation device for raspberries, including a shell, a refrigeration chamber at the top of the shell, and a unit chamber at the bottom. A roller is installed in the refrigeration chamber, and a spiral refrigeration tube is wound around the outside of the roller, connecting to the refrigeration unit. A rotatable door panel and a locking mechanism for sealing the door panel are installed on the front side of the shell. A rotatable retaining ring is provided at the front end of the roller, and a rotating shaft is connected to the rear end of the roller, which is connected to a drive mechanism. Ventilation holes are provided on the outer wall of the roller. The retaining ring is locked by a locking plate and a locking block. This device achieves uniform cooling of the fruit through the roller tumbling structure and the spiral refrigeration structure, effectively preventing the fruit from sticking together. At the same time, the door panel and retaining ring structure improve the ease of discharge, solving the problems of uneven freezing, severe sticking, and cumbersome removal in traditional raspberry freeze-drying processes.
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