WATER TUBE FOR HEAT EXCHANGER

PROBLEM TO BE SOLVED: To provide a water tube for a heat exchanger capable of improving a thermal efficiency and expecting a corrosion resistance to a drain and easily brazing an end of the exchanger to a bend. SOLUTION: The water tube A is constituted in a double structure of an inner tube 1 made o...

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Bibliographische Detailangaben
Hauptverfasser:	KAMEYAMA SHUJI, NAKATANI SHIGEO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL HEAT EXCHANGE IN GENERAL HEATING LIGHTING MECHANICAL ENGINEERING RANGES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a water tube for a heat exchanger capable of improving a thermal efficiency and expecting a corrosion resistance to a drain and easily brazing an end of the exchanger to a bend. SOLUTION: The water tube A is constituted in a double structure of an inner tube 1 made of a material having good processsability and connectability and an outer tube 2 made of a material having good corrosion resistance. The tube 2 is constituted in a shorter size than the tube 1 so that the tube 1 is exposed at an end of the tube A. An annular or spiral flare 3 is compression formed in a fin-like state to bulge toward an outside by flaring an outer periphery of the tube 2, and the tube 1 is brought into close contact with the tube 2 in an enlarged state to be superposed with the tube 2.