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    • 7. 发明授权
    • Laminated type heat exchanger
    • 层压式热交换器
    • US5720340A
    • 1998-02-24
    • US680655
    • 1996-07-16
    • Toshio OharaYasukazu AikawaYoshiharu Kajikawa
    • Toshio OharaYasukazu AikawaYoshiharu Kajikawa
    • F28F19/06F28D1/03F28F19/00F28F21/08F28F19/02
    • F28F21/084F28D1/0341F28F19/004Y10T29/49393
    • A laminated type heat exchanger includes a plurality of refrigerant passages which are formed by pairs of core plates. Each core plate comprises an outer covering layer, a core layer, and an inner covering layer. The outer covering layer is made of a brazing material of which electric potential is more negative than the core layer while the inner covering layer is made of a brazing material of which electric potential is equal to or more positive than the core layer. The refrigerant passages are formed by brazing only the adjacent two of the inner covering layer. The outer covering layer works as a sacrificial corrosive material with respect to the inner covering layer and the core layer. Leakage of refrigerant from the brazed portions of the core plates is prevented, whereby the corrosion resistance of the laminated type heat exchanger is improved.
    • 层叠型热交换器包括由成对的芯板形成的多个制冷剂通路。 每个芯板包括外覆盖层,芯层和内覆层。 外覆盖层由电阻比芯层更负的钎焊材料制成,而内覆盖层由电阻等于或大于芯层的正极的钎焊材料制成。 制冷剂通道仅通过钎焊相邻的两个内覆盖层形成。 外覆盖层相对于内覆层和芯层作为牺牲腐蚀性材料起作用。 防止了从芯板的钎焊部分泄漏制冷剂,从而提高了层叠型热交换器的耐腐蚀性。