| 摘要 |
PROBLEM TO BE SOLVED: To reduce a manufacturing cost of an ejector while securing prescribed pressure-proof strength and concentricity. SOLUTION: A refrigerant inflow part 420, a mixing part 430, and a diffuser 440 are integrally formed of resin to be formed as an inner cylinder member 460. The resin inner cylinder member 460 pressed in a sleeve 431 is housed in a metallic housing 450 in a state of pressing the metallic sleeve 431 in the mixing part 430. Thus, manufacturing manhours can be reduced more than when manufacturing the tapered refrigerant inflow part 420 and the diffuser 440 by metal. Since internal pressure received by the refrigerant inflow part 420, the mixing part 430 and the diffuser 440 (the inner cylinder member 460) can be received by the metallic housing 450, the prescribed pressure-proof strength can be easily secured. Since the inner cylinder member 460 is housed and positioned in the housing 450, the prescribed concentricity can be easily obtained.
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