| 摘要 |
PROBLEM TO BE SOLVED: To provide a counter-rotating axial flow fan capable of preventing first and second divided housing units from being damaged when joining the first and second divided housing units. SOLUTION: Engaging members 23A-23D and first stopper portions 25A-25D are integrally formed with a first flange portion 19 of the first divided housing unit 11. The first stopper portions 25A-25D are arranged adjacent to the engaging members 23A-23D. Engaged members 41A-41D and second stopper portions 43A-43D are integrally formed with a second flange portion 37 of the second divided housing unit 13. The second stopper portions 43A-43D are arranged adjacent to the engaged members 41A-41D, and have leading ends abutted onto leading ends of the first stopper portions 25A-25D in a state of completely engaging the engaging members 23A-23D with the engaged members 41A-41D. COPYRIGHT: (C)2009,JPO&INPIT
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