Patent ID: 8303271

Claim:
An electric compressor integral with a drive circuit, comprising a compression mechanism section and a motor for driving said compression mechanism section, and said motor comprising said drive circuit for driving said motor, a refrigerant gas chamber comprising a refrigerant gas expansion space formed therein, into which refrigerant gas is introduced, wherein said refrigerant gas chamber is formed between an installation section of said drive circuit and an installation section of said motor by a first partition wall disposed on a side of said installation section of said drive circuit and a second partition wall disposed on a side opposite said drive circuit installation section side, which is a side of said installation section of said motor, wherein said refrigerant gas chamber is separated by said first partition wall from said installation section of said drive circuit, and is in communication with said installation section of said motor by a through hole, formed in said second partition wall, through which said refrigerant gas passes, and wherein said drive circuit comprises an inverter circuit comprising a power semiconductor element and power circuit components comprising a smoothing capacitor and a noise filter, which are disposed in a electricity supply section for said inverter circuit, said first partition wall has a region which protrudes into said refrigerant gas chamber, and said power circuit components are disposed on a surface of said protruded region, disposed at a side opposite to said refrigerant gas chamber.