Provided are an air cleaning unit provided in an air flow channel and detachable collection-analysis members for collecting contaminants included in the air passing through and analyzing the components thereof, the members being disposed in parallel positions so as to be in contact with the outer peripheral part of the air cleaning unit. Also provided are a recording unit (34) that records operation information of a blower fan (2), and a short-range communication unit (18) that conveys operation information from the recording unit (34) to an external communication terminal device (22) that can be connected over a communication network, by having a communication unit (24) of the external communication terminal device (22) to be in proximity to the recording unit. Further, the collection-analysis members each have attached thereto at least an identification code that stores identification information for the collection-analysis member. By extracting the operation information from the recording unit (34) and reading the identification information, the external communication terminal device (22) is able to associate the operation information of the blower fan (2) and the identification information of the collection-analysis members, via the external communication terminal device (22).Linvention concerne une unité dépuration dair ménagée dans un canal découlement dair et des éléments amovibles de recueil-analyse pour recueillir des contaminants inclus dans lair traversant et analyser ses composants, les éléments étant disposés dans des positions parallèles de façon à être en contact avec la partie périphérique externe de lunité dépuration dair. Linvention concerne également une unité denregistrement (34) qui enregistre des informations de fonctionnement dun ventilateur refoulant (2), et une unité de communication à courte portée (18) qui véhicule les informations de fonctionnement provenant de lunité denregistrement (34) vers un dispositif terminal de communication exter
