MEMS micro differential pressure sensing module and electronic cigarette
CN224685225UActive Publication Date: 2026-08-28SHANDONG GETTOP ACOUSTIC CO LTD
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Patent Information
- Application Number
- CN202522225493.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-10-21
AI Technical Summary
Technical Problem
[0003]然而，电子烟在用户使用过程中抽吸动作，难免会产生水汽、烟油冷凝液等液滴，如缺乏有效的防护，烟油或水汽会进入到MEMS微压差传感模组的外壳内污染MEMS传感器，造成MEMS传感器性能降低甚至失效，严重时还会引起电子烟的干烧延迟或自燃，甚至引发电子烟爆炸
Benefits of technology
[0015]上述实施例提供的MEMS压差传感模组，PCB板结构和外壳共同围设形成容置腔，MEMS传感器和芯片均收纳于容置腔内，PCB板结构上设有连通MEMS传感器的内腔的板气流道，板防油防水透气膜覆盖板气流道，外壳上设有连通容置腔的壳气孔，壳防油防水透气膜覆盖壳气孔，板防油防水透气膜和壳防油防水透气膜可以共同将外部污物，如电子烟油烟、水汽等阻挡在MEMS微压差传感模组的外部，减少MEMS传感器和芯片被污染的机会，从而有利于维持长期的MEMS传感器电容特性，保持MEMS微压差传感模组稳定的灵敏度，有效避免误触发和性能失效。
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Abstract
This invention discloses a MEMS micro-differential pressure sensing module and an electronic cigarette. The MEMS micro-differential pressure sensing module includes a PCB board structure, a shell covering the PCB board structure, a board oil-proof, waterproof, and breathable membrane on the PCB board structure, a shell oil-proof, waterproof, and breathable membrane on the shell, and a MEMS sensor and a chip disposed within a cavity formed by the PCB board structure and the shell. The PCB board structure has a board airflow channel communicating with the inner cavity of the MEMS sensor, and the board oil-proof, waterproof, and breathable membrane covers the board airflow channel. The shell has a shell air hole communicating with the cavity, and the shell oil-proof, waterproof, and breathable membrane covers the shell air hole. The chip is electrically connected to both the PCB board structure and the MEMS sensor. This invention filters oil fumes from the airflow entering the cavity through the shell oil-proof, waterproof, and breathable membrane, and simultaneously filters oil fumes from the airflow entering the cavity of the MEMS sensor through the board oil-proof, waterproof, and breathable membrane, thus protecting the inner and outer walls of the MEMS sensor and ensuring that the entire MEMS micro-differential pressure sensing module maintains stable sensitivity.
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