Air-breathing smoke-sensing fire detector with filtering function
By using a dual-layer filter structure, the problem of fine dust interfering with optical detection in existing aspirating smoke detectors has been solved, resulting in higher detection accuracy and longer service life.
CN224437012UActive Publication Date: 2026-06-30HUNAN LIANFAN FIRE TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202521425862.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-30
- Estimated Expiration
- 2035-07-09
AI Technical Summary
Technical Problem
Existing aspirating smoke detectors use only a single filter, which cannot effectively intercept fine dust particles, leading to false alarms or decreased accuracy in optical detection systems.
Method used
It adopts a double-layer filter structure, including a filter frame and a fine filter plate. The filter frame performs coarse filtration of large particles and the fine filter plate performs fine filtration of fine dust. The filter screen is stably installed through a sealing ring and positioning mechanism.
Benefits of technology
It improves air cleanliness, reduces false alarms and accuracy degradation, and extends the lifespan of the detector.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses an air-breathing smoke-sensing fire detector with a filtering function, which relates to the technical field of fire detectors and comprises a detector body, an air outlet and an air inlet are mounted at the bottom of the detector body, and a filtering mechanism is mounted outside the air inlet. After the filter frame is mounted outside the mounting sleeve plate, a pushing block is in contact with the top side of the fine filter plate, a compression spring is pushed to be compressed and deformed, a telescopic rod is contracted, and the elastic force of the compression spring is utilized, so that the pushing block can be pushed to provide pressure for the fine filter plate, and the fine filter plate is kept stably positioned; large-particle impurities such as dust, fibers and insects in air are roughly filtered through the filter frame, fine dust such as dust and smog-shaped impurities in the passing air is finely filtered through the fine filter plate, the cleanliness of the air entering the detector body is improved, and misinformation or detection precision reduction caused by impurity interference is reduced.
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