发明名称 |
Finned assembly for heat exchangers |
摘要 |
Potential difficulties with corrosion in hear exchangers utilizing aluminum fins are avoided by using fin and tube constructions made by a method which includes the steps of providing a flattened tube (50) of ferrous material (80) and having an exterior coating (82) predominantly of aluminum providing at least one serpentine fin (56) of aluminum (86) and clad with a predominantly aluminum braze cladding (88); assembling (102) the fin (56) to the flattened tube (50); applying (94), (100), (104), a brazing flux to at least one of the fin (56) and the tube (50); raising (106) the temperature of the assembly to a level sufficient to at least partially melt the braze cladding (88); and maintaining the temperature for a sufficient period of time to achieve a brazed joint (60) between the fin (56) and the tube (50) but a time insufficient to convert the coating (82) and the cladding (88) to ferrous-aluminum intermetallic compound or intermediate phase.
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申请公布号 |
US5305945(A) |
申请公布日期 |
1994.04.26 |
申请号 |
US19920855248 |
申请日期 |
1992.03.23 |
申请人 |
MODINE MANUFACTURING CO. |
发明人 |
COTTONE, ANDREW J.;SAPERSTEIN, ZALMAN P. |
分类号 |
B23K1/00;B23K35/00;F28D1/053;F28F1/12;F28F13/12;F28F19/06;(IPC1-7):B23K31/02 |
主分类号 |
B23K1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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