{"appears_in":[{"position":1,"ranking_slug":"best-air-purifiers-2026","ranking_title":"2026 年空气净化器怎么选：颗粒物/甲醛 CADR、CCM 等级、净化能效三项定生死，10 款横向对比","score":9.2,"url":"https://buyranker.com/ranking/best-air-purifiers-2026"}],"brand":"小米 / 米家","buy_url":null,"canonical_url":"https://buyranker.com/product/xiaomi-mijia-air-purifier-4-pro","category":{"name":"空气净化器","slug":"air-purifier"},"cons":["甲醛 CADR 仅 200 m³/h，不适合新房除醛主力","机身较高，小户型玄关或床头柜旁会显得占地方"],"description":null,"id":"ef7d8767bb9207038702bbe2940c2042","image_url":null,"name":"米家空气净化器 4 Pro","official_url":null,"price":{"currency":"CNY","max":1399,"min":999},"pros":["同价位颗粒物 CADR 与噪声控制的组合几乎没有对手","睡眠档 33.4 dB(A)，低于国标低噪声模式 38 dB(A) 上限","四面进风，摆位不挑地方","滤芯价格亲民，长期耗材成本低"],"release_year":null,"slug":"xiaomi-mijia-air-purifier-4-pro","specs":{"滤芯":"五层一体复合滤芯，官方标称寿命约 9 个月","甲苯 CADR":"147 m³/h","甲醛 CADR":"200 m³/h","花粉 CADR":"550 m³/h","进风方式":"360° 四面环绕进风","颗粒物 CADR":"500 m³/h","睡眠档噪声":"33.4 dB(A)","建议适用面积":"25–40㎡"},"summary":"颗粒物 CADR 500 m³/h、睡眠档 33.4 dB(A) 的千元级全能机，卧室场景性价比标杆。"}