FIELD: transportation.
SUBSTANCE: invention relates to air treatment in vehicles. Air treatment system includes an air blower assembly having a fan, and a return air shield operating between a fresh air position in which the fan is in communication with the fresh air branch pipe, and recirculation position, in which fan is at least partially in communication with recirculation pipe. Noise-absorbing end of recirculation branch pipe is located under vehicle tool panel and is oriented perpendicular to the floor area under the tool panel. Noise from fan, which draws air through recirculation branch pipe, is directed to floor under tool panel.
EFFECT: control over amount of fresh air and amount of recirculated air tightened by air blower unit.
20 cl, 11 dwg
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