The purpose of the invention is a device to circulate air between the interior and the exterior of an enclosure (1) intended to contain air and a liquid, in which the enclosure (1) is an element intended to be installed in a vehicle, characterized in that it consists of at least two separate conduits (2, 3), connecting the interior of said enclosure (1) to its exterior, in which one conduit (2) is dedicated to the intake of air under normal conditions of pressure difference between the interior and the exterior of said enclosure (1), and one conduit (3) is dedicated to the release of air under normal conditions of pressure difference between the interior and the exterior of said enclosure.