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    • 1. 发明授权
    • Aluminum heat exchanger excellent in corrosion resistance
    • 铝合金热交换器耐腐蚀性优良
    • US07250223B2
    • 2007-07-31
    • US10860560
    • 2004-06-03
    • Haruhiko MiyachiYoshiharu HasegawaMasamichi MakiharaYasunaga ItohNaoki YamashitaToshihiko Fukuda
    • Haruhiko MiyachiYoshiharu HasegawaMasamichi MakiharaYasunaga ItohNaoki YamashitaToshihiko Fukuda
    • F28F23/00F28F1/12F28F1/42F28F21/08B32B7/02B32B15/01B32B15/20
    • F28F19/06F28F1/126F28F21/084F28F21/089Y10S165/905Y10T428/12764Y10T428/31678
    • The present invention provides a heat exchanger which is assembled by brazing an aluminum fin material to the outer surface of an aluminum tube material formed by bending a sheet material, in particular, an aluminum heat exchanger which can be suitably used as an automotive heat exchanger such as a condenser or evaporator. The tube material is formed of a two-layer clad sheet which includes a core material and an Al—Zn alloy layer clad on the core material. The Al—Zn alloy layer is clad on the outer surface of the tube material and brazed to the aluminum fin material. The potential of the Al—Zn alloy layer in a normal corrosive solution is at least 100 mV lower than the potential of the core material in the normal corrosive solution. The potential of the Al—Zn alloy layer in the normal corrosive solution is lower than the potential of the core material in high-concentration corrosive water. The normal corrosive solution refers to an aqueous solution containing 10 g/l of NaCl and 0.3 g/l of Na2SO4, and the high-concentration corrosive water refers to an aqueous solution in which the NaCl concentration is increased by 30 times by concentrating the above aqueous solution.
    • 本发明提供一种热交换器,其通过将铝翅片材料钎焊到通过弯曲板材形成的铝管材料的外表面而组装,特别是铝热交换器,铝热交换器可适合用作汽车热交换器 作为冷凝器或蒸发器。 管材由包含芯材和在芯材上包覆的Al-Zn合金层的双层包覆板形成。 Al-Zn合金层被覆在管材的外表面上并钎焊到铝翅片材料上。 正常腐蚀性溶液中Al-Zn合金层的电位比正常腐蚀性溶液中芯材的电位低至少100mV。 正常腐蚀性溶液中Al-Zn合金层的电位低于高浓度腐蚀性水中芯材的电位。 正常腐蚀性溶液是指含有10g / l NaCl和0.3g / l Na 2 SO 4·4的水溶液,高浓度腐蚀性水是指 通过浓缩上述水溶液使NaCl浓度增加30倍的水溶液。
    • 3. 发明授权
    • Refrigerant evaporator and manufacturing method for the same
    • 制冷剂蒸发器及其制造方法相同
    • US06272881B1
    • 2001-08-14
    • US09283790
    • 1999-04-01
    • Isao KuroyanagiMasamichi MakiharaToshio OharaSadayuki Kamiya
    • Isao KuroyanagiMasamichi MakiharaToshio OharaSadayuki Kamiya
    • F25B3902
    • F28D1/05391F25B39/02F28D1/035F28D2021/0085F28F9/0212F28F9/0214F28F9/0246F28F9/0253F28F9/18
    • An evaporator has plural tubes arranged in parallel with each other in a width direction perpendicular to an air flowing direction. The tubes are further arranged in a plural rows in the air flowing direction, and tank portions extending in the width direction are arranged in the plural rows in the air flowing direction to correspond to the tubes. In the evaporator, refrigerant flows through a zigzag-routed refrigerant passage formed by the tank portions and the tubes. A partition wall defining adjacent two tank portions in the air flowing direction has plural bypass holes through which the adjacent two tank portions directly communicate with each other. Therefore, the zigzag-routed refrigerant passage of the evaporator is readily formed without an additional side passage or the like. Thus, the number of components of the evaporator is reduced thereby simplifying the structure of the evaporator, and pressure loss of refrigerant flowing in the evaporator is decreased.
    • 蒸发器具有在垂直于空气流动方向的宽度方向上彼此平行布置的多个管。 这些管在空气流动方向上进一步布置成多排,并且在宽度方向上延伸的罐部沿空气流动方向排列成多个排,以对应于管。 在蒸发器中,制冷剂流过由罐部分和管形成的之字形布线的制冷剂通道。 在空气流动方向上限定相邻的两个罐部分的分隔壁具有多个旁通孔,相邻的两个罐部分彼此直接连通。 因此,蒸发器的之字形路由的制冷剂通道容易地形成,而没有附加的侧通道等。 因此,蒸发器的部件数量减少,从而简化了蒸发器的结构,减少了在蒸发器中流动的制冷剂的压力损失。
    • 7. 发明授权
    • Refrigerant evaporator with refrigerant distribution
    • 制冷剂蒸发器配制冷剂
    • US06449979B1
    • 2002-09-17
    • US09596896
    • 2000-06-19
    • Toshiya NagasawaEiichi TorigoeMasamichi Makihara
    • Toshiya NagasawaEiichi TorigoeMasamichi Makihara
    • F25B4300
    • F28F9/0212F25B39/02F28D1/0391F28D1/05391F28D2021/0085F28F9/0214F28F9/028
    • An evaporator has plural tubes arranged in parallel with each other in a width direction perpendicular to an air flowing direction. The tubes are further arranged in two rows in the air flowing direction, and tank portions extending in the width direction are also arranged in the two rows in the air flowing direction to correspond to the tubes. A refrigerant inlet and a refrigerant outlet are provided in the tank portions, respectively, at one side end in the width direction, so that refrigerant flows through all one-row tubes after passing through the other-row tubes. In the evaporator, throttle holes are provided in a distribution portion of the tank portions, for distributing refrigerant, so that a refrigerant distribution within the tubes can be arbitrarily set. Thus, air temperature blown out from the evaporator can be made uniform.
    • 蒸发器具有在垂直于空气流动方向的宽度方向上彼此平行布置的多个管。 管子沿空气流动方向进一步布置成两排,并且在宽度方向上延伸的罐部分也沿空气流动方向排列成两行以对应于管。 制冷剂入口和制冷剂出口分别在宽度方向的一个侧端处设置在罐部分中,使得制冷剂在通过另一排管之后流过所有一排管。 在蒸发器中,在容器部分的分配部分设置有节流孔,用于分配制冷剂,从而能够任意地设定管内的制冷剂分配。 因此,可以使从蒸发器吹出的空气温度均匀。