Deoiling device and deoiling method for fried food

The oil removal device for fried foods, with its three-layer vertical layout and rotary airlock unloading valve, combined with ultra-low temperature spraying, vacuum sublimation, and pulsed airflow stripping technologies, solves the problems of discontinuous production, difficult vacuum isolation, and imperfect oil collection in the oil removal process of fried foods, achieving a highly efficient and continuous oil removal process and a high recovery rate.

CN122123395APending Publication Date: 2026-06-02GUIZHOU ZUNYI COUNTY GUISANHONG FOOD
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Patent Information

Application Number
CN202610399817.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-30
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing oil removal technologies for fried foods suffer from problems such as discontinuous production, low oil removal efficiency, difficulty in vacuum isolation, and imperfect oil collection. They are difficult to match with the continuous discharge rhythm of frying production lines, and have low equipment utilization, high energy consumption, and serious resource waste.

Method used

The oil removal device for fried foods adopts a three-layer vertical layout, combining rotary lock unloading valve, ultra-low temperature spray, vacuum sublimation and pulse airflow stripping technology to achieve continuous production of surface microcrystallization, vacuum sublimation and airflow stripping. An oil collection system is set up to improve the oil recovery rate, and the process parameters and material conveying stability are optimized through the control system.

Benefits of technology

It enables continuous production of fried foods, increases production capacity by 2 to 3 times, reduces energy consumption by more than 40%, has high oil removal efficiency, achieves an oil recovery rate of 85%, reduces material loss and equipment cleaning frequency, and maintains food quality.

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Abstract

The invention discloses a deep-fried food deoiling device and deoiling method. The deep-fried food deoiling device comprises a rack, an upper cabin, a middle cabin and a lower cabin, wherein the upper cabin, the middle cabin and the lower cabin are sequentially arranged from top to bottom; a conveying mechanism is arranged in each cabin body, and the cabin bodies are connected through a transfer groove provided with a rotary air-locking discharge valve, so that continuous production is realized, and pressure isolation between the cabin bodies is maintained; the upper cabin body forms a microcrystal freezing layer on the surface of the food through the ultralow-temperature spraying mechanism; the middle cabin body enables grease to migrate to the surface under the action of the vacuum system and the heating mechanism; and the lower cabin body peels off surface grease through a pulse type airflow jet device. The problems that existing equipment is difficult in vacuum isolation and discontinuous in production are solved through the three-layer vertical layout and the air locking design in combination with the freeze drying technology and the like, and the device has the advantages of being high in deoiling efficiency, capable of recycling grease, good in food quality and low in energy consumption.
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