Abrégé

To improve separation performance of oil. An oil separation structure 55 includes a partition member 62 configured to partition the inside of a separation chamber 42 in the up-down direction. The partition member 62 includes a cylindrical support portion 71 supported by an inner circumferential surface 63 of the separation chamber 42 and a cylindrical swirl acceleration portion having an upper end side continuously formed from the support portion 71, having a smaller diameter than the support portion 71, and having a lower end side closed, and the swirl acceleration portion has a communication path 75 formed, the communication path 75 communicating the radial inside and the radial outside with each other, and accelerates swirling of refrigerant, the refrigerant having descended while swirling along the inner circumferential surface 63 of the separation chamber 42.

Classes IPC  ?

• B01D 45/16 - Séparation de particules dispersées dans des gaz ou des vapeurs par gravité, inertie ou force centrifuge en utilisant la force centrifuge produite par le mouvement hélicoïdal du courant gazeux
• B04C 3/00 - Appareils dans lesquels la direction axiale du tourbillon ne change pas