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    • 11. 发明申请
    • Tractor Cab Heating and Ventilating Systems
    • 拖拉机驾驶室加热和通风系统
    • US20120003911A1
    • 2012-01-05
    • US13139111
    • 2009-12-11
    • Hermann GeissAndreas Stieglitz
    • Hermann GeissAndreas Stieglitz
    • B60H1/26
    • B60H1/00378B60H1/00849
    • A tractor cab HVAC system having an HVAC unit (11) which receives and processes fresh air drawn in via an air intake (43) and recirculated air from at least one recirculation duct (47). The system has at least one air distribution duct (27,28) through which processed air from the HVAC unit is introduced into the cab. A first blower (23) is provided which primarily distributes processed air from the HVAC unit (11) to the distribution duct (27,28), and a second blower (22) which selectively draws air into the HVAC unit (11) through the air intake (43) and/or re-circulation duct (47). The ratio of fresh air to recirculated air drawn into the HVAC unit (11) by the second blower (22) is variable by one or more flaps (60,62) which control the flow of air into the HVAC unit (11) through the air intake (43) and circulation duct (47).
    • 一种具有HVAC单元(11)的牵引车HVAC系统,其接收并处理经由进气口(43)吸入的新鲜空气和来自至少一个循环管道(47)的再循环空气。 该系统具有至少一个空气分配管道(27,28),通过该空气分配管道将来自HVAC单元的经处理的空气引入驾驶室。 提供第一鼓风机(23),其主要将经处理的空气从HVAC单元(11)分配到分配管道(27,28);以及第二鼓风机(22),其通过所述第一鼓风机(22)选择性地将空气吸入所述HVAC单元 进气口(43)和/或再循环管道(47)。 通过第二鼓风机(22)吸入HVAC单元(11)的新鲜空气与再循环空气的比率可以通过一个或多个翼片(60,62)而变化,所述翼片(60,62)通过控制通过所述HVAC单元 进气口(43)和循环管道(47)。