Electric compressor
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Solution Overview
Problem
Conventional electric compressors generate vibration noise due to the discharge of high-pressure refrigerant into a discharge chamber with limited volume, leading to abnormal vibrations in vehicles and air conditioning systems.
Innovation Solution
The electric compressor design includes a rear housing with a multi-stepped discharge chamber and an oil separator, dividing the internal space into chambers of varying volumes, with ribs and a partition wall to enhance noise reduction and structural stability, and an eccentric oil separator to optimize refrigerant diffusion and separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the discharge chamber volume is increased to reduce vibration and noise, then the harmful factors are reduced, but the device complexity increases due to multi-stepped structure and oil separator
Solution Approach 1:
The discharge chamber is divided into multiple stepped sections with different volumes, creating a segmented structure that reduces vibration and noise while managing the complexity through functional zoning
Solution Approach 2:
The oil separator is positioned within the discharge chamber, nesting one functional component inside another to optimize space utilization and reduce overall device complexity despite the multi-stepped structure
2Object-affected harmful factors
If the discharge chamber volume is increased, then the vibration and noise are reduced, but the rear housing volume increases
Solution Approach 1:
The discharge chamber extends in multiple directions with stepped protrusions rather than uniformly increasing volume, utilizing dimensional optimization to reduce vibration while minimizing overall housing volume increase
3Device complexity
If the oil separator is slantly disposed to save space, then the device complexity is reduced, but the refrigerant diffusion and separation efficiency decreases
Solution Approach 1:
The oil separator is positioned eccentrically within the discharge chamber rather than at the center, creating an asymmetric arrangement that optimizes refrigerant flow patterns and separation efficiency while maintaining compact design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration increases the internal volume of the discharge chamber, reducing vibration and noise generated by refrigerant discharge, thereby minimizing noise and maintaining structural stability, ensuring quiet operation in vehicles and air conditioning systems.
Implementation Method 1
measures for solving the above problems are required... minimizing vibration and noise which are generated by discharge of refrigerant
Implementation Method 2
an oil separator 20 is slantly disposed in the rear housing 10... based on the oil separator 200, the internal space of the discharge chamber 110 is divided into two spaces having different volumes
Data Source
AI summary
Disclosed herein may be an electric compressor. The electric compressor may include: a rear housing having a discharge chamber into which refrigerant is discharged; and an oil separator disposed in the discharge chamber and having a refrigerant inlet hole through which the refrigerant is drawn into the oil separator. The discharge chamber may protrude in a multi-stepped manner outwards from the rear housing such that a volume of the rear housing is increased, and based on the oil separator, an internal space of the discharge chamber may be divided into spaces having different volumes.