| 摘要 |
<p>An air conditioning system for the cab (10) of a tractor or a truck comprises one blower (13) mounted downsteam of a filter (12) in an intake duct (11) disposed in the cab roof for pressurising the cab (10) with dust-free ambient air through selectively-closeable and variably-directable outlets (15) in a plenum chamber (14); and another blower (21) mounted upstream of a radiator (22) and an evaporator (23) which are alternatively-operable in a housing (20) disposed in the lower part of the cab (10) for recirculating the air within the cab (10) through selectively-closeable outlets (26, 28, 30) in the housing (20) some (30) of which are variably-directable, and through a permanently open windscreen demister outlet (32) in the housing (20).</p> |
