HEAT EXCHANGER AND METHOD OF MANUFACTURING THE SAME

• Main Authors: OGIWARA KANA, UEDA KAORU
• Format: Patent
• Language: English; Japanese
• Published: 05.07.2018
• Subjects: BLASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEATING; LIGHTING; MACHINE TOOLS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

PROBLEM TO BE SOLVED: To provide a heat exchanger excellent in hydrophilicity and hydrophilic persistence, and a method of manufacturing the same.SOLUTION: In a method of manufacturing a heat exchanger 1, the heat exchanger includes a metal tube 2, an aluminum fin 3, and a brazing part 4 in which they are connected together. In an X-ray spectrum of the fin 3, Si-derived peak intensity I, Zr-derived peak intensity I, F-derived peak intensity Iand Al-derived peak intensity Isatisfy a predetermined relationship. The fin 3 has a predetermined high-content part provided within a range up to a depth of 100 nm from its surface.SELECTED DRAWING: Figure 1 【課題】親水性及び親水持続性に優れた熱交換器及びその製造方法を提供すること。【解決手段】金属管２と、アルミニウム製のフィン３と、これらが接続されたろう付け部４とを備える熱交換器１及びその製造方法である。フィン３の蛍光Ｘ線スペクトルにおいては、Ｓｉ由来のピーク強度ＩSiと、Ｚｒ由来のピーク強度ＩZrと、Ｆ由来のピーク強度ＩFと、Ａｌ由来のピーク強度ＩAlとが所定の関係を満足する。フィン３は、その表面から深さ１００ｎｍまでの範囲内に所定の高含有部を有する。【選択図】図１