Inverter-Integrated Electric Compressor

Abstract

Disclosed is a low-cost, inverter-integrated electric compressor with which a high degree of design freedom is maintained, high vibration resistance can be achieved by reliable anchoring of the circuit components, the weight can be reduced easily, and which has excellent operational stability. An inverter-integrated electric compressor has a built-in motor and has a substrate provided with a motor drive circuit including an inverter. In the inverter-integrated electric compressor, after electric components including the substrate have been fixed in a housing space surrounded by a compressor housing and have been assembled, the housing space is filled with an insulating resin, and at least a part of the electric components are sealed by the solidified filling resin. The inverter-integrated electric compressor is characterized in that a resin frame, which has a concave retaining part provided with a concave part formed in a concave shape along the outlines of the circuit components provided on the substrate and has a vent hole provided in the concave retaining part, is mounted on the substrate, and a resin injection space, which can be filled with resin, is formed between the circuit components on the substrate and the resin frame.

1 . An inverter-integrated electric compressor, incorporating a motor and having a substrate provided with a motor drive circuit including an inverter, wherein after electric components including said substrate have been fixed in a housing space surrounded by a compressor housing and have been assembled, said housing space is filled with an insulating resin, and at least a part of said electric components are sealed by a solidified filling resin, wherein a resin frame, which has a concave retaining part provided with a concave part formed in a concave shape along outlines of circuit components provided on said substrate and has a vent hole provided in said concave retaining part, is mounted on said substrate, and a resin injection space, capable of being filled with a resin, is formed between said circuit components on said substrate and said resin frame. 
     
     
         2 . The inverter-integrated electric compressor according to  claim 1 , wherein said concave part is provided with a tapered part, which narrows down said resin injection space toward said vent hole, around said vent hole. 
     
     
         3 . The inverter-integrated electric compressor according to  claim 1 , wherein said concave part is formed substantively corresponding to each outline of each of said circuit components on said substrate. 
     
     
         4 . The inverter-integrated electric compressor according to  claim 1 , wherein said insulating resin is filled in said resin injection space and said housing space. 
     
     
         5 . The inverter-integrated electric compressor according to  claim 1 , wherein said insulating resin is filled in said housing space after a bonding resin is filled in said resin injection space. 
     
     
         6 . The inverter-integrated electric compressor according to  claim 5 , wherein said resin frame is provided with a hole for positioning a resin injector which injects said bonding resin. 
     
     
         7 . The inverter-integrated electric compressor according to  claim 1 , wherein said resin frame is provided with a resin injecting hole. 
     
     
         8 . The inverter-integrated electric compressor according to  claim 7 , wherein each of a plurality of concave parts is provided with said resin injecting hole. 
     
     
         9 . The inverter-integrated electric compressor according to  claim 7 , wherein said concave part is provided with a tapered part, which narrows down said resin injection space toward said resin injecting hole, around said resin injecting hole. 
     
     
         10 . The inverter-integrated electric compressor according to  claim 1 , wherein said resin frame mounted on said substrate is fixed to said substrate by fastening. 
     
     
         11 . The inverter-integrated electric compressor according to  claim 1 , wherein said compressor is mounted on a vehicle. 
     
     
         12 . The inverter-integrated electric compressor according to  claim 11 , wherein said compressor is one for an air conditioning system for vehicles.