| 摘要 |
PURPOSE:To reduce a resistance against the flow of medium and improve a performance of the heat exchanger for evaporator in a refrigerator having some thermal conducting pipes with fins by a method wherein some pipes between the fins are formed flat in a direction of flow of the medium. CONSTITUTION:A part of the pipe 3 between the fins 2 except the zig-zag bent part 7 of the pipe 3 is made flat in a direction of flow of medium indicated by an arrow in a range where the fins 2 are not made loose. With this arrangement, it is possible to provide a substantial reduction of resistance against a flow of medium and improvement of the performance even if the frost is produced to the pipes. |
