A trigger alarm device suitable for security and safety linkage of weak current informatization

By placing an external air intake grille at the bottom of the smoke sensor and combining it with an automatic cleaning mechanism, the problem of easy clogging of the air intake grille is solved, enabling quick disassembly and automatic cleaning, thus improving the reliability and ease of operation of the equipment.

CN224789256UActive Publication Date: 2026-09-22FUZHOU HUAFENG JUDING ELECTRONIC TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202521319453.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-26
Publication Date
2026-09-22
Estimated Expiration
2035-06-26

AI Technical Summary

Technical Problem

The air intake grid of existing smoke sensors is prone to accumulating oil and dirt, which can cause blockages and affect normal operation. Furthermore, replacing the smoke sensor requires complete disassembly, which is inconvenient.

Method used

Design a trigger alarm device for fire safety linkage suitable for low-voltage information systems. The air intake grille is externally located at the bottom of the smoke sensor and can be quickly disassembled and assembled via a threaded connection. Combined with a motor-driven gear system and a nanofiber wiping cotton cleaning mechanism, the air intake grille is automatically cleaned and a miniature suction fan removes dust.

Benefits of technology

It enables quick disassembly and automatic cleaning of the air intake grille, avoiding smoke sensor malfunction due to blockage, simplifying the maintenance process, and improving operational convenience and equipment reliability.

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Abstract

The application relates to the technical field of triggering alarm devices, in particular to a triggering alarm device suitable for weak-current informatization and security and fire-fighting linkage, which comprises an air inlet grid, a threaded column knob, a fixed plate and a micro air suction fan, the threaded column knob is threadedly connected into a threaded hole one, the air inlet grid is sleeved onto a smoke inlet groove of a smoke sensor, the fixed plate is provided with a cleaning mechanism with a self-cleaning function, the cleaning mechanism comprises a motor, a gear and a gear ring, the motor rotating end is fixedly connected with the gear, the gear is engaged with the gear ring, an air suction pipe is fixedly connected to an air inlet end of the micro air suction fan, and suction nozzles are fixedly connected to two ends of the air suction pipe. The air inlet grid is externally arranged at the bottom of the smoke sensor, quick disassembly and assembly of the smoke sensor and the air inlet grid are realized through connection of a center threaded hole two, replacement of the air inlet grid does not need to disassemble the smoke sensor as a whole, maintenance process is simplified, and the operation convenience is improved.
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