| 摘要 |
PURPOSE:To improve heat exchanging efficiency particularly by a method wherein a plurality of tubes, arranged in parallel, are wound in spiral and are attached to a column body and an outer shell in a heat exchanger for a tap- controlled hot-water heater or the like and similar tubes are provided in zigzag with those tubes. CONSTITUTION:Support bodies 3 are attached to a column body 1 at a plurality of places by welding or the like and a plurality of tubes 2, arranged in parallel under being contacted closely with each other and formed in spiral, is disposed on the support bodies 3 around the column body 1. The support bodies 3 are being attached to the column body 1, however, they can be attached to the outer shell 5. A plurality of tubes 4, arranged in parallel so as to be contacted with each other, is arranged in zigzag to the plurality of tubes 2 above-described and is disposed on the support bodies 3 attached to the inside of the outer shell 5. It is necessary to contact the plurality of tubes 2, 4 with each other, the tubes 2 with the column body 1 and the tubes 4 with the outer shell 5 through support bodies 3. |
