Inverter-Integrated Electric Compressor

Abstract

An inverter-integrated electric compressor configured in such a manner that a motor is incorporated within a compressor, a control circuit board is provided to an inverter section which is provided with a motor drive circuit for driving the motor, and electric component parts including the control circuit board is fixed within a containment space surrounded by a compressor housing, wherein the control circuit board is fixed within the housing space through a board-fixing section, and a board vibration-isolating member, said board vibration-isolating member consisting of an electrically insulative elastic material, is provided between the control circuit board and the board-fixing section. A frame member having a convcave holding section may be loaded on the control circuit board, and a board vibration-isolating member, said board vibration-isolating member consisting of an electrically insulative elastic material, may be provided between the control circuit board and the frame member. The inverter-integrated electric compressor has highly reliable performance and configured in such a manner that the vibration of the control circuit board of the motor drive circuit is suppressed as much as possible.

1 . An inverter-integrated electric compressor, wherein a compressor incorporates a motor, an inverter section having a motor drive circuit to, drive said motor is provided with a control circuit board, and electric component parts including said control circuit board are fixed in a housing space surrounded by a compressor housing, characterized in that said control circuit board is fixed through a board-fixing section in said housing space and a vibration isolating for board vibration-isolating member, which is made of an electrically insulative elastic material, is provided so as to interpose between said control circuit board and said board-fixing section. 
     
     
         2 . The inverter-integrated electric compressor according to  claim 1 , wherein said electric component parts are sealed at least partially by an electrically insulative filler filled in said housing space. 
     
     
         3 . The inverter-integrated electric compressor according to  claim 2 , wherein said board vibration-isolating member is made of a material harder than said electrically insulative filler. 
     
     
         4 . The inverter-integrated electric compressor according to  claim 1 , wherein said control circuit board is provided with an insertion hole through which a part of said board vibration-isolating member is inserted so as to fix said vibration-isolating member onto said control circuit board, and that said board vibration-isolating member is provided with a neck part having a smaller diameter than said insertion hole and a locking part having a greater diameter than said insertion hole. 
     
     
         5 . The inverter-integrated electric compressor according to  claim 1 , wherein a frame member having a concave holding section with a concave part formed into a concave shape is loaded onto said control circuit board while said board vibration-isolating member made of an electrically insulative elastic material is provided so as to interpose between said control circuit board and said frame member. 
     
     
         6 . The inverter-integrated electric compressor according to  claim 5 , wherein said board vibration-isolating member is disposed as being plane-symmetrical viewed from said control circuit board. 
     
     
         7 . The inverter-integrated electric compressor according to  claim 5 , wherein said insertion hole is a through-hole and that one board vibration-isolating member between said control circuit board and said frame member is formed integrally with another board vibration-isolating member between said control circuit board and said board-fixing section. 
     
     
         8 . The inverter-integrated electric compressor according to  claim 5 , wherein said frame member is formed integrally with said board vibration-isolating member. 
     
     
         9 . The inverter-integrated electric compressor according to  claim 1 , wherein said compressor is used in an air conditioning system for vehicles.