发明名称 |
FINNED TUBE FOR HEAT EXCHANGERS, HEAT EXCHANGER, PROCESS FOR PRODUCING HEAT EXCHANGER FINNED TUBE, AND PROCESS FOR FABRICATING HEAT EXCHANGER |
摘要 |
A heat exchanger finned tube 10 for use in fabricating a heat exchanger 1 useful as the evaporator for refrigerators or the like wherein a hydrocarbon refrigerant is used. Two tube insertion holes spaced apart from each other are formed in each of plate fins 12 , and two straight tube portions 11 a of a hairpin tube 11 are inserted through the respective holes of each plate fin to arrange the plate fins 12 in parallel into a plurality of fin groups 13 spaced apart on the straight tube portions 11 a longitudinally thereof. The hairpin tube 11 is enlarged with use of a fluid to fixedly fit the plate fins 12 of each tin group 13 around an enlarged tube portion 14 of the hairpin tube 11 and provide a finless part 19 between each pair of adjacent fin groups 13 on each of the straight tube portions 11 a. A restrained small-diameter portion 15 is provided in each of the finless parts 19 of each straight tube portion 11 a. The heat exchanger 1 fabricated using the finned tube 10 exhibits the desired refrigeration performance with the leakage of refrigerant diminished. |
申请公布号 |
EP1438545(A1) |
申请公布日期 |
2004.07.21 |
申请号 |
EP20020777898 |
申请日期 |
2002.10.22 |
申请人 |
SHOWA DENKO K.K. |
发明人 |
WATANABE, ISAO,;MARUGASA, SHIGEO, |
分类号 |
B21D53/08;F25B39/02;F28D1/047;F28F1/32;F28F1/40;(IPC1-7):F28F1/32 |
主分类号 |
B21D53/08 |
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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