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    • 1. 发明申请
    • 熱交換器
    • 热交换器
    • WO2003056265A1
    • 2003-07-10
    • PCT/JP2002/011964
    • 2002-11-15
    • 本田技研工業株式会社小松 晴彦田中 宏幸篠原 雅志齋藤 文一和泉 秀治
    • 小松 晴彦田中 宏幸篠原 雅志齋藤 文一和泉 秀治
    • F28D7/02
    • F28D7/022F01N5/02F01N2240/02F28D7/0075F28D7/024F28D7/08F28D7/082F28D7/085F28D21/0003F28D2021/0064F28F9/22F28F13/12Y02T10/16
    • An evaporator (23) disposed between an exhaust manifold (22) and an exhaust pipe (24), comprising, in order, a first exhaust gas passage (56) having a third stage heat exchanger (H3) extending from an upstream side to a downstream side, a second exhaust gas passage (55) having a second stage heat exchanger (H2), and a third exhaust gas passage (50) having a first stage heat exchanger (H1), wherein a spiral passage partitioned by spiral heat transfer plates (68) is formed in the annular second exhaust gas passage (55) for the second stage heat exchanger (H2), and a plurality of waveform heat transfer pipes (67) overlapped with each other at shifted phases are spirally disposed in the spiral passage so as to be positioned along the heat transfer plate (68), whereby a heat exchange efficiency can be increased by increasing the length of the exhaust gas passage by the heat transfer plate (68) and bringing the flow of exhaust gas into a turbulent flow by the heat transfer pipes (67) to increase the chance of contact of the exhaust gas with the heat transfer plate (68) and the heat transfer pipes (67).
    • 设置在排气歧管(22)和排气管(24)之间的蒸发器(23),依次包括具有第三级热交换器(H3)的第一排气通道(56),所述第三级热交换器(H3)从上游侧延伸到 具有第二级热交换器(H2)的第二废气通道(55)和具有第一级热交换器(H1)的第三排气通道(50),其中螺旋形通道由螺旋传热板 (68)形成在第二级热交换器(H2)的环状的第二排气通路(55)中,并且以相位相互重叠的多个波形传热管(67)螺旋地设置在螺旋形通路 以便沿着传热板(68)定位,从而通过增加传热板(68)的排气通道的长度并使废气流进入湍流,可以提高热交换效率 通过传热管(67)加热 减轻排气与传热板(68)和传热管(67)的接触的机会。