Inverter-integrated electric compressor

Patent metadata

Field	Value
Publication number	US-10186935-B2
Application number	US-201414787173-A
Country	US
Kind code	B2
Filing date	May 19, 2014
Priority date	Jun 19, 2013
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

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 ).

First claim

The invention claimed is:

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.

2. The inverter-integrated electric compressor according to claim 1 , wherein the sub-board is formed as a triangular or quadrilateral board, and is tightened and fixed on the side of the housing by the fixing screws provided at three or four portions arranged at the corners of the triangular or quadrilateral board.

3. The inverter-integrated electric compressor according to claim 1 , wherein, via the noise suppression component provided close to the connector connected to the communication harness, and via the noise suppression component provided close to the fixing screw provided at the other portion, the power source line is grounded to the fixing screw provided close to the connector and to the fixing screw provided at the other portion.

4. The inverter-integrated electric compressor according to claim 1 , wherein, via the noise suppression component arranged close to the connection connector, the communication line is grounded to the fixing screw close to the connection connector.

5. The inverter-integrated electric compressor according to claim 3 , wherein at least one or more of the noise suppression components are provided at middle positions which are provided on the power source line and not close to the fixing screws.

Assignees

• Mitsubishi Heavy Ind Automotive Thermal Sys Co Ltd
• Mitsubishi Heavy Ind Thermal Systems Ltd

Inventors

• Hattori Makoto
• Asai Masahiko

Classifications

• H02K11/33 Primary

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• F04B35/04

  the means being electric · CPC title

• F04C2240/808

  Electronic circuits (e.g. inverters) installed inside the machine · CPC title

• H02K11/02

  for suppression of electromagnetic interference · CPC title

• F04C2240/803

  Electric connectors or cables; Fittings therefor · CPC title