Patent ID: 6997687
Filing Date: 2006-02-14
Classification: F04B,F04C

Abstract:
1. An electric compressor comprising: a housing; an electric motor portion, wherein the electric motor portion is housed in the housing and includes a stator portion and a rotor portion; a drive circuit portion for operating the electric motor portion, wherein the drive circuit portion is integrated with part of the periphery of the housing; a compressor portion driven by the electric motor portion for compressing a fluid, wherein the compressor portion is housed in the housing; and a plurality of cooling medium passages provided between the inner surface of the housing and the outer surface of the stator portion to circulate fluid taken in by the compressor portion prior to compression as a cooling medium through the electric motor portion and, among the cooling medium passages, cooling medium passages that are located in proximity to the drive circuit portion have a greater endothermic capacity than others of the cooling medium passages that are not located in proximity to the drive circuit portion.