Air treatment system for a confined environment
AssigneeTecnocad Engineering & Design S.r.l.
InventorNicolas Toppani
Life of this patent
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Abstract
An air-treatment system for a confined environment, in particular the cabin of a vehicle, includes: a supply unit including an inlet port, a delivery port, and a purge port, the supply unit being configured for delivering air to said confined environment through the delivery port; and a first filtering device having a first filtration level, and a second filtering device having a second filtration level, each of the first and second filtering devices being arranged in fluid communication with the inlet port of said supply unit at a circuit node. A single flow-control valve determines inlet flow through one or other of the filtering devices.
Claims11
An air treatment system (1) for a confined environment (C), comprising:
- a supply unit (2) including an inlet port (4), a delivery port (6) and a purge port (8), said supply unit (2) being configured to deliver air to said confined environment (C) through said delivery port (6),
- a first filtering device (10) having a first level of filtration, and a second filtering device (12) having a second level of filtration, each of said first and second filtering devices (10, 12) being arranged in fluid communication with the inlet port (4) of said supply unit (2) in correspondence of a circuit node (J),
- a flow control valve (14) arranged at said circuit node (J) and including a first working port (16) in fluid communication with said first filtering device (10), a second working port (18) in fluid communication with said second filtering device (12), a third working port (20) in fluid communication with said inlet port (4), and a fourth working port (22) in fluid communication with said purge port (8),
- a recirculation duct in fluid communication with the confined environment (C) and the third working port (20) independent of the circuit node (J) and flow control valve (14),
- the flow control valve (14) further including:
- a first operating position wherein fluid communication is established between the first working port (16) and the third working port (20), and fluid communication is established between the second working port (18) and the fourth working port (22), and
- a second operating position wherein fluid communication is established between the second working port (18) and the third working port (20), and fluid communication is established between the first working port (16) and the fourth working port (22).
Dependencies are inferred from the claim text.