公开(公告)号：US20220410048A1

公开(公告)日：2022-12-29

申请号：US17777198

申请日：2020-09-18

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Misako KABURAGI ,  Atsuo TESHIMA

IPC: B01D45/16 ,  B04C3/00

Abstract: 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.

公开(公告)号：US20220316476A1

公开(公告)日：2022-10-06

申请号：US17615751

申请日：2020-06-23

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Atsuo TESHIMA

IPC: F04C18/02

Abstract: A scroll compressor is provided which is capable of performing an adjustment to appropriate back pressure in both a low-speed operation condition and an operation condition low in suction pressure by improving the position or dimension of a back pressure hole. The scroll compressor includes a back pressure chamber 29 formed on the back surface of a mirror plate 31 of a movable scroll 22, and back pressure holes 51 and 52 formed in the mirror plate of the movable scroll and providing communication between the back pressure chamber and the compression chamber 34. After the back pressure hole 52 is opened inside a lap 32 of the movable scroll in a first crank angle range, the back pressure hole 52 is temporarily closed by a lap 24 of a fixed scroll 21 and then opened inside the lap of the fixed scroll in a second crank angle range.