| 摘要 |
PROBLEM TO BE SOLVED: To provide an ejector capable of suppressing deterioration of operational accuracy of a passage forming member by driving means, while suppressing deterioration of ejector efficiency caused by deviation of concentricity of the passage forming member and a nozzle passage.SOLUTION: An ejector in which a refrigerant swirling in a swirling space 221 is decompressed in a nozzle passage 224 and injected, and the refrigerant injected from the nozzle passage 224 is mixed with a sucked refrigerant in a diffuser passage 232a so that its pressure is increased, includes restriction means 255, 256 for displacing a passage forming member 240 forming the nozzle passage 224 and the diffuser passage 232a in a direction of a central axis of the nozzle passage 224 and the diffuser passage 232a. The restriction means 255, 256 are composed of a sliding shaft portion 255 extended in the direction of the central axis and connected to the passage forming member 240, and a guide portion 256 provided with a sliding hole 256a for sliding the sliding shaft portion 255 in the direction of the central axis. |
