| 摘要 |
PROBLEM TO BE SOLVED: To downsize an air-cooling type cooler while reducing pressure loss.SOLUTION: An air-cooling type cooler 20 includes a heat exchange part 21 forming a square cylindrical shape. A first refrigerant passage 22 is formed in the heat exchange part 21. The air-cooling type cooler 20 includes a tube expansion part 31 connected with the heat exchange part 21. A second refrigerant passage 32 is formed in the tube expansion part 31. One end of the second refrigerant passage 32 communicates with the other end of the first refrigerant passage 22. A curved surface 35 protruding toward the exterior of the second refrigerant passage 32 is formed a position on an inner surface of a wall part 34 which faces a blade 54 of an axial flow fan 51. |
