| 摘要 |
PROBLEM TO BE SOLVED: To improve assembling workability and productivity, and to miniaturize a heat exchanger, in the heat exchanger for heating water flowing in a thin rectangular housing 10 formed by joining peripheral edges of two sheets of plates 11, 12, by circulating a refrigerant in a tube 40 joined to the flat face of the housing 10. SOLUTION: A corrugated plate 20 has notches 22a formed at side ends of wall faces 22 alternately in right and left directions, and received in the housing 10 in a state of bringing upper and lower folded faces 24, 25 into contact with the plates 11, 12 to form a meandering water passage from an inlet 13 to an outlet 14 formed at peripheral edges of the housing 10. Windows 24a, 25a of dimensions slightly larger than dimensions of plain surfaces of inner fins 30 received in each of circulation chambers defined by the wall faces 22 are formed on the upper and lower folded faces 24, 25, the inner fins 30 are received in the windows 24a, 25a, tops 31 and bottoms 32 of convex-shaped segments are kept into contact with the plates 11, 12, these component members are made of copper materials, and an assembly is brazed and joined in a heating furnace. COPYRIGHT: (C)2009,JPO&INPIT
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