Electric Compressor Inverter Layout for Compact Noise Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electric compressors face challenges in reducing the package size and weight due to the noise reduction element being disposed inside the inverter circuit board, increasing the width and height of the inverter cover, and the connector protruding in the opposite direction of the motor, thereby elongating the overall compressor.
Innovation Solution
The noise reduction element is positioned radially outside the circuit board, and the high and low voltage connectors are integrated into a support body, with an electromagnetic wave shielding member, reducing the circuit board size and inverter cover length, and eliminating the need for separate bolts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the noise reduction element is disposed inside the inverter circuit board, then the high frequency noise transmission is suppressed, but the area of the circuit board increases, requiring larger width and height of the inverter cover member
Solution Approach 1:
The noise reduction element is relocated from the planar circuit board to the radial direction of the support body. This dimensional change allows the noise reduction element to be positioned in a different spatial plane, eliminating the need to increase circuit board area while maintaining noise suppression functionality.
Solution Approach 2:
The inverter unit is divided into functional modules: the support body with radially arranged receiving parts for the noise reduction element, high voltage connector, and low voltage connector, separate from the circuit board. This segmentation allows independent optimization of each component's position and size.
2Ease of operation
If the connector is provided on the outside of the inverter cover member and protrudes in the opposite direction of the motor, then the electrical connection is achieved, but the overall length of the electric compressor is increased
Solution Approach 1:
The high voltage connector and low voltage connector are integrated into the support body structure, sharing the same mounting location and radial arrangement. This merging eliminates the need for separate protruding connector assemblies, reducing the overall compressor length while maintaining electrical connection functionality.
Solution Approach 2:
The connectors are positioned in the radial direction of the support body rather than protruding axially from the inverter cover member. This dimensional repositioning reduces the axial length of the compressor while providing accessible connection points.
3Stability of the object's composition
If separate bolts are used to fasten the inverter cover member, then the assembly is secured, but the number of parts increases, increasing complexity and manufacturing cost
Solution Approach 1:
The support body integrates multiple functions into a single component: it provides structural support, houses the noise reduction element, accommodates connectors, and serves as the fastening interface with the housing. This merging reduces the number of separate parts and fastening elements required.
Solution Approach 2:
The support body is designed as a multi-functional component that simultaneously performs mechanical support, electrical connection housing, noise reduction element mounting, and fastening functions. This universality eliminates the need for separate specialized components for each function.
Data Source
AI summary
An electric compressor, including: a housing; a compression unit provided in the housing; a motor unit provided in the housing to drive the compression unit; and an inverter unit coupled to one side of the housing and controlling the motor unit, and the inverter unit includes: a support body disposed on one side of the housing; and an inverter cover coupled to one side of the support body; and the support body includes: a center part allowing a circuit board to be seated thereon; and a first receiving part extending from the center part toward a radially outer side of the center part, and having a noise reduction element disposed therein.