发明名称 |
RIPPENRÖHRE FÜR WÄRMETAUSCHER FÜR KLIMA UND KÜHLUNGSANLAGEN UND ENTSPRECHENDE WÄRMETAUSCHER |
摘要 |
PCT No. PCT/FR94/00646 Sec. 371 Date Jan. 5, 1996 Sec. 102(e) Date Jan. 5, 1996 PCT Filed Jun. 2, 1994 PCT Pub. No. WO94/29661 PCT Pub. Date Dec. 22, 1994Tube (1) internally grooved by helicoidal ribs (2) having a helix angle of 5 DEG to 50 DEG , an apex angle (alpha) of 30 DEG to 60 DEG . The tube is characterized in that the ribs (2) form a periodic profile comprising at least two ribs of different heights, one designated high (2h) of a height Hh, and the other designated low (2b) of a height Hb, with a ratio Hb/Hh of 0.40 to 0.97, each high rib being bordered by a flat-bottomed groove (3). |
申请公布号 |
DE69401434(T2) |
申请公布日期 |
1997.05.28 |
申请号 |
DE1994601434T |
申请日期 |
1994.06.02 |
申请人 |
TREFIMETAUX, COURBEVOIE, FR |
发明人 |
MESSANT, MICHEL, F-78000 VERSAILLES, FR;PINET, VERONIQUE, F-92000 NANTERRE, FR;PREDKI, RENE, F-08600 LANDRICHAMPS, FR |
分类号 |
F28F1/40;F28F1/42 |
主分类号 |
F28F1/40 |
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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