2024年江苏省苏州市加湿器产品质量监督抽查情况发布（第101期）

Product Overview and Industry Distribution - Humidifiers are household appliances that increase environmental humidity using electricity, categorized into electric heating, ultrasonic, and pure type humidifiers based on their working principles [3] - Major production areas for humidifiers in China include South China, East China, and North China, with a concentration of manufacturers in Suzhou, Shanghai, Hefei, Zhongshan, Shenzhen, and Foshan [3] Inspection Basis and Items - The main inspection standards for the humidifier quality supervision include GB 4706.1-2005, GB 4706.48-2009, GB 4343.1-2009, and GB 4343.1-2018, which are mandatory national standards [4] - Key inspection items include safety detection (protection against electric parts, input power and current, leakage current, mechanical strength, etc.) and electromagnetic compatibility detection (terminal disturbance voltage, disturbance power) [5] Supervision and Inspection Results - A total of 30 batches of humidifiers were sampled, with 28 batches passing inspection, resulting in a pass rate of 93.3%. Two batches failed, one in safety and one in electromagnetic compatibility [6] - The failures were attributed to design defects and inadequate understanding of national standards by manufacturers, leading to issues with residual voltage and terminal disturbance voltage [6] Consumer Tips - Consumers are advised to purchase humidifiers from reputable channels, check product labels for completeness, and select the appropriate type based on their needs [7] - Recommendations for usage include controlling humidity levels between 45%RH and 65%RH, using purified or distilled water, and maintaining regular cleaning to prevent bacteria growth [8]