| 摘要 |
PURPOSE:To obtain a heat exchanger core free from strain or positional deviation, by fixing a heat exchanger core assembled by providing side plates on both sides of fins and tubes arranged alternately between seat plates with jigs of the same quality, heat-treating and brazing and thereby allowing the jigs to expand and contract in accordance with the core. CONSTITUTION:Supporting jig plates 17 of a manufacturing jig C are made of Al similar in quality to seat plates 10, 11, fins 12, tubes 13 and side plates 14, 15 constituting a heat exchanger core B. Accordingly, the jig plates expand in accordance with thermal expansion of the heat exchanger core B at the time of brazing, and contract in accordance with contraction of the heat exchanger core B when taken out from the heating furnace, and strain or positional deviation do not occur in fins and tubes 13. |
