Scroll compressor having an electric motor incorporated

Abstract

In a scroll compressor with an electric motor incorporated of the present invention, a housing is provided with a cooling chamber which is provided adjacently on the outer peripheral side of a motor portion, so that cooling fluid is supplied to the cooling chamber, and a high pressure chamber which is provided adjacently on the outer peripheral side of the cooling chamber so that a gas, compressed by a fixed scroll and a movable scroll, is supplied to the high pressure chamber. Consequently, reduction in the mass flow rate of the discharge gas of the compressor can be suppressed, and it is possible to cool both the discharge gas and the motor portion by the single cooling chamber.

What is claimed is:  
     
         1 . A scroll compressor, with an electric motor incorporated, comprising: 
 a housing accommodating a compressor portion and a motor portion, the motor portion driving a movable scroll, and the compressor portion having a fixed scroll secured to the housing and the movable scroll which is located eccentrically with respect to the fixed scroll so as to orbit with respect to the fixed scroll,    a cooling chamber which is provided adjacently on the outer peripheral side of the motor portion, and    a high pressure chamber which is provided adjacently on the outer peripheral side of the cooling chamber, so that gas compressed by the fixed scroll and the movable scroll is supplied to the high pressure chamber,    wherein a cooling fluid is supplied to the cooling chamber to cool both the gas and the motor portion.    
     
     
         2 . A scroll compressor according to  claim 1 , wherein said high pressure chamber and a discharge port of said housing is connected by a gas passage for highly pressurized gas formed at the outside of said housing.  
     
     
         3 . A scroll compressor according to  claim 1 , wherein said cooling chamber and said high pressure chamber are formed annularly around said motor portion.  
     
     
         4 . A scroll compressor according to  claim 1 , wherein said cooling fluid is water.