Gas filtration and extraction device for living animal, has shell supporting ventilator to generate air flow and extract gas from case, and filter arranged in contact with case and shell engaged with shape of outer surface of wall of case

摘要

The device (1) has a filter to filter gas contained in a case (2), and a shell to support a ventilator to generate air flow and extract the gas from the case, where the case has a wall (3) connected to the device in a zone having aeration orifices permitting the passage of the gas from the interior towards the exterior of volume defined by the case. The filter is arranged in contact with the case and the shell, where the shell is engaged with shape of an outer surface of the wall.