Electric compressor for automobile use

Abstract

An object of the present invention is to provide an electric compressor for automobile use, which can satisfy a plurality of requirements including protection of an inverter board, suppression of electromagnetic noise, vibration and noise, and the like. A cover 20 B covering an opening of a housing 11 of the electric compressor is configured by laminating a conductive material layer 21 formed of a conductive material and an insulating material layer 22 formed of an insulating material. By the conductive material layer 21 of the cover 20 B, electromagnetic noise radiated from the inverter board 12 and the like is prevented from leaking to the outside of the housing 11 . Also, by providing the insulating material layer 22 so as to be directed to the inside of the housing 11 , the conductive material layer 21 of the cover 20 B is insulated from the inverter board 12 to which a high voltage is applied, so that the electric compressor is made small in size. Also, by the insulating material layer 22 , vibration of the conductive material layer 21 is suppressed, thus reducing vibration and noise of the electric compressor.

1 . An electric compressor for automobile use comprising:
 a compressor constituting an air conditioner for automobile use;   a motor for driving the compressor;   a control board for controlling the operation of the motor;   a housing which accommodates the compressor, the motor, and the control board, and has an opening above the control board; and   a cover which is arranged so as to face the control board to close the opening of the housing, and is configured by laminating a conductive material layer formed of a conductive material and an insulating material layer formed of an insulating material.   
   
   
       2 . The electric compressor for automobile use according to  claim 1 , wherein the cover is provided in a state in which the insulating material layer is arranged on the side of the control board accommodated in the housing. 
   
   
       3 . The electric compressor for automobile use according to  claim 2 , wherein
 in the outer peripheral part of the cover, the conductive material layer is formed with an extending part extending to the housing side; and   the extending part is provided so as to cover the side of the insulating material layer interposed between the conductive material layer and the housing.   
   
   
       4 . The electric compressor for automobile use according to  claim 3 , wherein the extending part is provided so as to be in direct contact with the outer peripheral surface of the housing.