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    • 2. 发明公开
    • ENGINE COOLER AND CONSTRUCTION MACHINES
    • 宝马公司
    • EP0799979A1
    • 1997-10-08
    • EP96935365.5
    • 1996-10-18
    • HITACHI CONSTRUCTION MACHINERY CO., LTD.
    • FUNABASHI, ShigehisaTAKADA, YoshihiroWATANABE, MasatoshiSHIMODE, ShinichiTANITO, YoshioTANAKA, SotaroKANEKO, ZenjiHIRAMI, IchiroTAKISHITA, ToshioMIHARA, Shinichi
    • F01P5/02F01P5/04F01P5/06B60K11/04
    • E02F9/0866B60K11/04B60K11/08F01P5/02F01P11/10F01P2001/005F04D17/162F04D29/582F04D29/664
    • First cooling air (50) enters an engine room (1) through a cooling air inlet port (7a) from the exterior of the engine room (1), and is throttled by a suction tube (8a) after passing heat exchangers such as an intercooler (6a), an oil cooler (6b) and a radiator (6c), followed by entering a centrifugal fan (4). The first cooling air (50) is then blown off toward an outer circumference of the centrifugal fan (4). Second cooling air enters the engine room (1) through cooling air inlet ports (7b, 7b) from the exterior of the engine room (1), and flows around an engine (5), various electric equipments such as an alternator (10), and an oil pan (14) while cooling them. The second cooling air is then throttled by a suction tube (8b) before entering the centrifugal fan (4), and blown off toward the outer circumference of the centrifugal fan (4). Two streams of the first and second cooling air (50, 51) are discharged to the exterior through an exhaust port (9). This arrangement enhances the degree of sealing on the engine (5) side to reduce noise, and improves the effect of cooling the electric equipments (10) for higher reliability of the electric equipments (10).
    • 第一冷却空气(50)通过来自发动机室(1)的外部的冷却空气入口(7a)进入发动机室(1),并且在通过热交换器 中间冷却器(6a),油冷却器(6b)和散热器(6c),然后进入离心式风扇(4)。 然后将第一冷却空气(50)吹向离心式风扇(4)的外周。 第二冷却空气通过来自发动机室(1)的外部的冷却空气入口(7b,7b)进入发动机室(1),并且在发动机(5)周围流动,诸如交流发电机(10)等各种电气设备, 和油盘(14)同时冷却它们。 然后在进入离心风扇(4)之前,第二冷却空气被吸入管(8b)节流,并且向离心式风扇(4)的外周吹出。 第一和第二冷却空气(50,51)的两股流经排气口(9)排出到外部。 由此,能够提高发动机(5)侧的密封度,降低噪音,提高电气设备(10)的冷却效果,提高电力设备(10)的可靠性。