| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing structure of a metallic plate and a heat transfer tube capable of reducing heat stress generated on a welding section of the metallic plate and the heat transfer tube.SOLUTION: A through-hole 40 is formed on a housing 11 constituted of the metallic plate 11a, and the heat transfer tube 30 is inserted into the through-hole 40. The heat transfer tube 30 is provided with a guide pipe 45 of a diameter larger than the heat transfer tube 30 on a position corresponding to the through-hole 40. The guide pipe 45 is disposed outside of the heat transfer tube 30 concentrically with the heat transfer tube 30. One end 45a of the guide pipe 45 is welded to the heat transfer tube 30 at a first welding section 51. A part 45c near the other end 45b of the guide pipe 45 is welded to the metallic plate 11a by a second welding section 52. |
