| 摘要 |
PURPOSE:To easily manufacture a compact heat exchanger for water, by certainly bundling each end of a number of refrigerant pipes liquid-tightly by a simple method. CONSTITUTION:Refrigerant pipes 7 are liquid-tightly bonded to one another by soft brazing material in the brazing part of a bundle 2 of pipes. The pipes 7 are brazed between the brazing part of a bundle of pipes 7 and the end 1a of an outer pipe, and then the top part 3 of a bundle 2 is fitted to the end part 1a of an outer pipe liquid-tightly by a sealing agent 11 being pressedly filled into the cavity 12 around the brazed part of a bundle by applying pressure to the flare part of a connecting pipe 4b, being softened by the heat of a burner. By this method, a heat exchanger for water of multi-tube type, into which refrigerant pipes 7 consisting of a number of capillary pipes are assembled, can easily be manufactured. The diameter of an outer pipe 1 can be made small, and the length is made short, so that the heat exchanger can be made compact as much as its decreased volume. |
