A ventilation device for tobacco drying rooms and its usage method

By combining multi-level linkage adjustment components and local flow diversion compensation components, the shortcomings of existing tobacco drying room ventilation devices in terms of fine adjustment and response accuracy are solved, realizing the uniformity and stability of airflow velocity distribution inside the drying room and improving the environmental control capability of the tobacco drying process.

CN122296501APending Publication Date: 2026-06-30YUNNAN TOBACCO CO CHUXIONG PREFECTURE CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YUNNAN TOBACCO CO CHUXIONG PREFECTURE CO
Filing Date
2026-05-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing ventilation systems for tobacco drying rooms have limitations in terms of fine-tuning, making it difficult to accurately compensate for local micro-circulation wind speeds. This results in inconsistent airflow velocity distribution inside the drying room and low adjustment response accuracy.

Method used

It employs a multi-stage linkage adjustment component, a local flow diversion compensation component, and a precision mechanical drive component. The precision mechanical drive component enables micron-level adjustment of the main adjustment blade opening, while the local flow diversion compensation component provides targeted compensation for airflow resistance. Furthermore, the auxiliary vents enable precise air replenishment to ventilation dead zones.

Benefits of technology

It improves the response accuracy of ventilation devices in response to external weather fluctuations, enhances the consistency of airflow distribution inside the drying room, provides a stable physical environment, and improves the quality of tobacco drying.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the technical field of tobacco leaf drying, and discloses a ventilation device for a tobacco leaf drying room and its usage method. The device includes a ventilation frame assembly, a multi-stage linkage adjustment assembly, a local airflow compensation assembly, and a precision mechanical drive assembly. The ventilation frame assembly consists of a rectangular frame and internal supporting beams. The multi-stage linkage adjustment assembly is installed inside the ventilation frame assembly and includes multiple sets of main adjustment blades, a rotating shaft, a synchronous connecting rod, and a rotating sleeve. The main adjustment blades are movably connected to the rectangular frame via the rotating shaft and are synchronously driven to deflect by the synchronous connecting rod. The local airflow compensation assembly includes secondary deflection blades located in the main adjustment blade receiving grooves, a damping pivot shaft, and an array of distributed airflow guiding protrusions. The precision mechanical drive assembly includes a manual rotating disk, a threaded screw, and a reciprocating slider. This application can precisely adjust the ventilation volume and compensate for airflow in local dead zones.
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