CARBON DIOXIDE RECOVERY DEVICE, AIR CONDITIONING VENTILATION SYSTEM, AND CARBON DIOXIDE RECOVERY METHOD

To provide a carbon dioxide recovery device which can be applied to gas having a lower pressure and downsized, and to provide an air-conditioning ventilation system including the carbon dioxide recovery device.SOLUTION: A carbon dioxide recovery device (1) includes: a storage part (10): a recovery part (30); and an adsorption part (20). An adsorption space (25) is formed within the adsorption part (20). The adsorption part (20) is provided with an inflow port (26) through which gas (43) containing carbon dioxide flows into the adsorption space (25). An adsorption agent (40) is fallen in the adsorption space (25) from the storage part (10) to the recovery part (30) by its self-weight. The gas (43) is introduced into the adsorption space (25) in a direction intersecting with a falling direction of the adsorption agent (40) through the inflow port (26). The adsorption agent (40) adsorbs carbon dioxide contained in the gas (43) in the adsorption space (25).SELECTED DRAWING: Figure 4 【課題】より低い圧力を有するガスにも適用可能であり、かつ、より小型化され得る二酸化炭素回収装置、及び該装置を備える空調換気システムを提供する。【解決手段】二酸化炭素回収装置（１）は、貯蔵部（１０）と、回収部（３０）と、吸着部（２０）とを備える。吸着部（２０）の内部に吸着空間（２５）が形成されている。吸着部（２０）に、二酸化炭素を含むガス（４３）が吸着空間（２５）に流入する流入口（２６）が設けられている。吸着剤（４０）の自重で、貯蔵部（１０）から回収部（３０）に向かって吸着空間（２５）を落下する。ガス（４３）は、流入口（２６）を通して、吸着剤（４０）の落下方向と交差する方向に吸着空間（２５）に導入される。吸着剤（４０）は、吸着空間（２５）において、ガス（４３）に含まれる二酸化炭素を吸着する。【選択図】図４