| 摘要 |
PURPOSE:To obtain a heat exchanger, easy in the insertion and incorporation of tubes and not necessitating the air-tight inspection of a separator after the incorporation, by a method wherein both ends of the tubes are inserted into a tubular tank previously and fins are arranged between the tubes while each tubular tank is connected to each other continuously so as to obtain a laminated shape. CONSTITUTION:Both ends 61, 61 of tubes 6 are inserted into the inserting ports 15 of an intermediate tubular tank 11 and are fixed temporarily. Subsequently, the small-diametral parts of respective tubular tanks at the upper side are fitted into the large diametral parts of respective tubular tanks while pinching fins 7 between the tubes 6 to constitute headers 1, 1 and the whole body of a heat exchanger by connecting them continuously. Thereafter, an inlet pipe 10 and an outlet pipe 13 are incorporated to braze the fins, the tubes and the tubular tanks through integral brazing and manufacture the heat exchanger. Accordingly, the leakage test of the tubular tanks 12 for a separator can be effected upon manufacturing it and, therefore, the air-tight inspection of the separator unit may not be necessitated after the assembling. |
