| 摘要 |
The heat exchanger HE comprising a case 2 housing a plurality of heat transfer tubes 1 and a header 3 having a hollow main body 30 with an open edge 33. A side wall 21 of the case 2 is provided with a bulging portion 22 having a cylindrical circumferential wall 22a bulging out of the case 2 and an end wall 22b which blocks a tip portion of the circumferential wall 22a. Each end of the heat transfer tubes 1 is inserted into a penetrating hole 22c provided for the end wall 22b of the bulging portion 22, and is jointed to the end wall 22b, and the open edge 33 of the header 3 is fitted onto the circumferential wall 22a of the bulging portion 22, thereby forming a chamber 36 communicating with the inside of each heat transfer tube 1. Therefore, it is possible that the number of the members of the heat exchanger HE is reduced, the configuration is simplified, and the heat exchanger HE is easily manufactured at low cost. |
