Compressor Drive Circuit Protector Vibration Damping
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Solution Overview
Problem
Motor-driven compressors in vehicles face issues with electric leakage and noise generation due to vibrations, especially during collisions, where existing solutions like plate-shaped protectors resonate and cause noise.
Innovation Solution
A motor-driven compressor design featuring an inner housing with a sealed compressor and motor mechanism, an outer housing with anti-vibration and thermal insulation intermediate members, and a protector integrated into the outer housing to prevent electric leakage and noise, using materials like rubber and glass wool for vibration and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plate-shaped protector is coupled to the outer portion of the housing to prevent electric leakage, then protection of the drive circuit is improved, but noise generation increases due to resonance from vibration
Solution Approach 1:
The patent introduces intermediate members with anti-vibration and thermal insulation properties between the inner housing and outer housing, and between the drive circuit and outer housing. These intermediate members act as mediators that prevent direct transmission of vibrations to the protector, thereby reducing resonance and noise generation while maintaining the protective function of the drive circuit.
2Object-generated harmful factors
If intermediate members with anti-vibration properties are introduced to reduce noise, then noise suppression is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into the intermediate members: anti-vibration properties, thermal insulation properties, and structural support. By merging these functions into a single component or set of components, the patent reduces the number of separate parts needed, thereby limiting the increase in device complexity while achieving multiple objectives including noise suppression.
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
The design effectively suppresses vibration and noise transmission, protects the drive circuit from external impacts, and prevents electric leakage while maintaining the compressor's operational efficiency and comfort in the passenger compartment.
Implementation Method 1
The intermediate members include anti-vibration and thermal insulation properties
Implementation Method 2
The intermediate members include anti-vibration and thermal insulation properties
Data Source
AI summary
A motor-driven compressor that prevents electric leakage from a drive circuit while suppressing the generation of noise. The motor-driven compressor includes a compressor mechanism that compresses a refrigerant, a motor mechanism that actuates the compressor mechanism, a drive circuit that drives the motor mechanism. The drive circuit is connected to a power supply. An inner housing accommodates the compressor mechanism and the motor mechanism in a sealed state and holds the drive circuit. An outer housing accommodates the inner housing and includes a mounting portion that can be mounted to another member. An intermediate member arranged between the inner housing and the outer housing and between the drive circuit and the outer housing. The intermediate members include anti-vibration and thermal insulation properties. A protector protects the drive circuit from an external impact, wherein the protector is arranged on the outer housing.