Particulate matter sensor and air treatment equipment

By optimizing the area of ​​the light detection region and the airflow velocity, the problem of long response time of particulate matter sensors has been solved, achieving fast and high-precision particulate matter detection, which is suitable for scenarios such as air purification equipment and environmental monitoring instruments.

CN224399203UActive Publication Date: 2026-06-23SHENZHEN CHENBEI TECH CO LTD
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Patent Information

Application Number
CN202521148860.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-05
Publication Date
2026-06-23
Estimated Expiration
2035-06-05

AI Technical Summary

Technical Problem

Existing particulate matter sensors have long response times when detecting large-diameter particles, making it difficult to achieve rapid detection and thus hindering work efficiency.

Method used

By optimizing the preset area of ​​the optical detection zone and the wind speed of the airflow generator, the area of ​​the optical detection zone is ensured to be 16mm2≤S≤100mm2, and the wind speed is 0.5m/s≤V≤3m/s. Combined with the design of the optical detection component and the airflow generator, the particle sensor achieves rapid response and high-precision detection.

Benefits of technology

It achieves rapid response and high-precision detection of particulate matter sensors, and can generate sufficiently strong scattering signals in particles of different sizes, significantly improving detection speed and sensitivity, and balancing rapid response with long-term reliability.

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Abstract

The utility model discloses a particulate matter sensor and air treatment equipment, and the particulate matter sensor comprises a shell which is internally provided with a gas flow channel through which to-be-detected gas containing particulate matters passes; the airflow generating part is communicated with the airflow channel, the airflow generating part can drive the to-be-detected gas to pass through the airflow channel, and the preset wind speed V of the airflow generating part is larger than or equal to 0.5 m / s and smaller than or equal to 3 m / s; the optical detection assembly is arranged on the shell and used for generating a detection light beam, the detection light beam forms an optical detection area at the intersection of the detection light beam and the airflow channel, the optical detection area has a preset area S, S is larger than or equal to 16 mm < 2 > and smaller than or equal to 100 mm < 2 >, and the optical detection assembly outputs an electric signal about the concentration value of the particulate matter according to the detection light beam scattered by the particulate matter.
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