{"appears_in":[{"position":5,"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":8.5,"url":"https://buyranker.com/ranking/best-air-purifiers-2026"}],"brand":"布鲁雅尔 (Blueair)","buy_url":null,"canonical_url":"https://buyranker.com/product/blueair-7440i-air-purifier","category":{"name":"空气净化器","slug":"air-purifier"},"cons":["原装滤芯单价高，长期耗材成本明显","最高档 CADR 不及同价位国产大风量机型"],"description":null,"id":"44e2cfb33fe1bbccf563eafaf0c68734","image_url":null,"name":"布鲁雅尔 Blueair 7440i","official_url":null,"price":{"currency":"CNY","max":4299,"min":2999},"pros":["中低档噪声控制优秀，适合卧室长开","颗粒物与甲醛 CADR 搭配均衡","环绕送风不直吹，数显信息实用"],"release_year":null,"slug":"blueair-7440i-air-purifier","specs":{"显示":"专业数显，实时空气质量","甲醛 CADR":"270 m³/h","送风方式":"环绕送风","颗粒物 CADR":"430 m³/h","官方适用面积":"31–51㎡"},"summary":"颗粒物 CADR 430 m³/h、甲醛 CADR 270 m³/h，官方适用 31–51㎡，主打静音与专业数显。"}