| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat transfer tube for a heat exchanger, and a heat exchanger incorporating the heat transfer tube providing superior cooling efficiency by promoting an efficient heat exchange action even with a simple structure. SOLUTION: In the heat transfer tube for the heat exchanger, and a multitubular heat exchanger integrally built in with a plurality of the heat transfer tubes, or a double tube type heat exchanger built in with the heat transfer tube as an inner tube, at least one fin structural body comprised of a coil spring formed by winding a metallic wire such that its cross sectional shape is flat, contacts an inner circumferential wall surface of the heat transfer tube and/or the circumferential wall surface of the heat transfer tube and an inner circumferential wall surface of an outer tube, it is in parallel with an axis or spirally wound, and the fin structural bodies comprised of the coil springs are closely fixed such that a pitch P becomes a predetermined interval. COPYRIGHT: (C)2007,JPO&INPIT
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