公开(公告)号：US11933297B2

公开(公告)日：2024-03-19

申请号：US17437939

申请日：2020-03-16

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Hironobu Inaba ,  Taizo Sato ,  Tetsuya Imai

IPC: F04C23/00 ,  F04C18/02 ,  F04C27/00 ,  F04C28/28 ,  F04C29/06

CPC classification number: F04C18/0215 ,  F04C18/0261 ,  F04C23/008 ,  F04C28/28 ,  F04C29/068 ,  F04C2240/30

Abstract: [Problem] A scroll compressor is provided which has improved workability when a back pressure chamber and a compression chamber are communicated with each other.
[Solution] A scroll compressor 1 includes a back pressure chamber 39 formed in a back surface of a mirror plate 31 of a movable scroll 22 in the scroll compressor 1, and a communication hole 51 which is formed in the mirror plate 31 of the movable scroll 22 and communicates the back pressure chamber 39 and a compression chamber 34 with each other. The communication hole 51 is constituted of a large-diameter hole section 52 located on the back pressure chamber 33 side of the mirror plate 31 of the movable scroll 22, and a small-diameter hole section 53 which continues from the large-diameter hole section 52 to reach the compression chamber 34.

公开(公告)号：US11773852B2

公开(公告)日：2023-10-03

申请号：US17437993

申请日：2020-03-16

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Hironobu Inaba ,  Taizo Sato ,  Tetsuya Imai

IPC: F04C18/02

CPC classification number: F04C18/0276 ,  F04C18/0215

Abstract: [Problem] A scroll compressor is provided which effectively suppresses the occurrence of localized contact caused by deformation of a fixed scroll or a movable scroll due to the influence of a compressive reaction force or thermal expansion and shortens a break-in time. [Solution] Laps 24 and 32 of a fixed scroll 21 and a movable scroll 22 are constituted to have a plurality of step portions between a winding end portion at an outermost periphery and a winding start portion at an innermost periphery and decrease stepwise in height toward the winding start portion from the winding end portion. The position and height of each step portion are set so that when the spiral laps 24 and 32 are expanded on a predetermined plane, a base point of each step portion is placed on a predetermined arc drawn on the plane.