| 摘要 |
PURPOSE:To facilitate brazing of fins, by fitting the tapered and corrugated fins to the gaps between neighboring coiled tubes, and by brazing them after bringing the supporting plate of the fin side into contact with a proper place of the both end of the fin width direction. CONSTITUTION:In the gap between flattenend coil tubes 3, a tapered and corrugated fin is fitted, and set by a mounting jig comprising upper and lower supporting plates 9, 8 and a supporting column 10. A supporting device comprising a supporting plate 13 of a fin side and a holding member 14 of a supporting plate is connected to the said mounting jig. The part (b) of a half the height of a fin 2, or the projected or the recessed part or its vicinity of the fin 2 in contact with the tube 3, are brought into contact with and supported by a supporting plate 13. Then, even in the case of the load by a wedge 12 in the direction of lessening the gap between the supporting plate 8, 9, or of a compressing load due to the difference of a heat expansion during brazing, the fins 2 are prevented from dislocating. In the mean time, the jig and the supporting plate 13 are removed after brazing. |
