| 摘要 |
PROBLEM TO BE SOLVED: To improve the cooling efficiency of a fixed scroll by efficiently guiding cooling air to the back of the fixed scroll. SOLUTION: Fixed scroll side ducts 25 and 26 are mounted on the back side 5A1 of the fixed scroll, and an upper side cooling air passage 28 and a lower side cooling air passage 30 are formed between the fixed scroll side ducts 25, 26 and each heat radiation fin 5E of the fixed scroll 5 respectively. Further, a guide projection 29 is mounted on the fixed scroll side duct 25, located on the way of the upper side cooling air passage 28, and the cooling air flowing in the upper side cooling air passage 28 is guided to the back side 5A1 of the fixed scroll 5 by the guide projection 29. As for the fixed scroll side duct 26, a guide projection 31 is mounted on the duct, located on the way of the lower side cooling air passage 30, and the cooling air flowing in the lower side cooling air passage 30 is guided to the back side 5A1 of the fixed scroll 5 by the guide projection 31.
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