INVERTER-INTEGRATED ELECTRIC COMPRESSOR

摘要

In an inverter-integrated electric compressor, a sub-board (26) divided from a main board is mounted with a communication circuit (25) and is connected to a communication harness (24) via a connector (34). Further, the sub-board (26) is configured to be connected to the main board via a connection connector (35) and to be fixed on the side of a housing (2) at three or more portions by fixing screws (32), and is configured such that the connector (34) and the connection connector (35) are respectively arranged close to the fixing screws (32), such that a communication line (39) connected to a noise suppression component (41) connected to a frame ground of the sub-board (26) is arranged between the connector (34) and the connection connector (35), and such that a power source line (40) connected to noise suppression components (42, 43) connected to the frame ground is arranged along a triangular line passing through the vicinity of the fixing screw (32) provided at a portion other than the portions of the fixing screws (32) provided close to the connector (34) and the connection connector (35). The frame ground of the sub-board (26) is grounded on the side of the housing (2) via the fixing screws (32).

主权项

1. An inverter-integrated electric compressor having a housing including a inverter accommodating section integrally incorporating therein an inverter apparatus including an inverter circuit board, wherein:
the inverter circuit board is divided into a main board installed in an upper portion of the inverter accommodating section, and a sub-board installed in a portion below the main board, the sub-board being smaller than the main board; the sub-board is mounted with a communication circuit and connected to a communication harness via a connector, and is also connected to the main board via a connection connector and tightened and fixed, via fixing screws, at three or more points arranged in a polygonal pattern on the side of the housing; the connector and the connection connector are respectively arranged close to two of the fixing screws, and a communication line, connected to a noise suppression component connected to a frame ground of the sub-board, is arranged between the connector and the connection connector, and a power source line connected to a noise suppression component connected to the frame ground is arranged along a triangular line passing through the vicinity of the fixing screw provided at an other portion other than the portions of the two fixing screws; and the frame ground of the sub-board is grounded on the side of the housing via the fixing screws.