| 摘要 |
<P>PROBLEM TO BE SOLVED: To sufficiently improve ejector efficiency ηe in an ejector converting kinetic energy of fluid in a gas liquid two phase state to pressure energy. <P>SOLUTION: A straight part 16g formed with keeping fluid passage area constant is provided at an inlet side of a mix pressure rise part 16e converting the kinetic energy of the fluid in the mixed gas liquid two phase state to the pressure energy while mixing injection fluid injected from a nozzle part 16a and suction fluid sucked from a fluid suction port 16d. An expansion part 16h in which the fluid passage area gradually expands is provided at a fluid flow downstream side of the straight part 16g. When length of the straight part 16g in a nozzle part 16a center axis direction is defined as L1 and length to a fluid outlet from a fluid inlet of the mix pressure rise part 16e in the nozzle part 16a center axis direction is defined as L2, L1/L2 is set to about 0.2. Consequently, energy transmission loss of gas phase refrigerant and liquid phase refrigerant is reduced and ejector efficiency ηe is sufficiently improved. <P>COPYRIGHT: (C)2010,JPO&INPIT |
