Mobile device for aeraulic isolation including air-diffusing chamber with variable geometry against airborne contaminant spread

Abstract

The invention concerns a mobile device for aeraulic isolation (1a) including a multiple-unit air-diffusing chamber (4) with variable geometry, comprising at least two mobile plenums (5, 6) to protect a sensitive area such as a bed (2), against airborne contaminating aerosols (3). It comprises an air-diffusion chamber (4) consisting of at least two rigid plenums (5, 6) mechanically linked to each other so as to be mobile relative to each other, and having a lower air diffusing surface (7, 8) substantially planar and air-porous. A means for imparting a relative movement (10) to the mobile plenums (5, 6) enables to position them relative to each other in at least two different relative positions. The device (1a) comprises physical means for decontaminating (20, 21, 22, 23) the moving air which passes through it, means for pressurizing (26) air, means for ventilating connection (30) and air circulation, and a mobile support frame (12). The device is characterized in that it comprises means for imparting absolute movement (13) to the group of two rigid plenums (5, 6) relative to the frame (12). Thus, its two plenums (5, 6) are mobile both relative to each other and relative to the frame (12). The device (1a) constitutes an mobile protective insulating device for immunodepressed persons.

Description

technical field [0001] The present invention belongs to the category of ventilation devices, equipped with air flow diffusers to prevent the ingress of external pollution in sensitive areas. It relates to devices for purifying gaseous fluids of the atmosphere-isolated type, that is to say to deliver a stream of purified air in a specific part of a room, or to extract a stream of polluted air. The present invention particularly relates to the technical field of high-altitude separation devices: [0002] - comprising a movable support chassis enabling the unitary movement of the device relative to the surface of the carriage, in particular the floor, and an air diffuser (or air diffusion chamber), [0003] - a multi-piece air diffusion chamber with variable geometry, that is to say containing at least two rigid air diffusion plenums (diffuser parts), mechanically connected to each other so that they are movable relative to each other, [0004] - and equipped with compensating ...

AI Technical Summary

Problems solved by technology

[0083] A seventh drawback of movable blown spacers with variable geometry dual block diffusers (such as those described above) is that their transverse air curtains are generally noisy and energy consuming

[0084] A seventh drawback of movable blown spacers with variable geometry double block diffusers (such as those described above) is that, associated with their first specific approach above

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