Air Compression Device Vibration Isolation and Cooling

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Solution Overview

Problem

Air compression devices mounted in vehicles transmit vibrations to the vehicle frame, causing discomfort to passengers due to the direct housing of the compression mechanism, which amplifies vibrations.

Innovation Solution

The air compression device features a housing with a vibration isolator connecting it to the vehicle's underside, and a cooling device positioned outside the housing, allowing for a downsized housing that reduces vibration amplification and transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the compression mechanism is housed in a large housing, then the housing can provide adequate protection and space for components, but the housing amplifies vibrations from the compression mechanism and transmits them to the vehicle

Engineering Contradiction:
Improvehousing protection capabilityVSAvoidvibration transmission
Core Design Contradiction:
StrengthVSObject-generated harmful factors

Solution Approach 1:

A vibration isolator is introduced as an intermediary component between the compression mechanism and the housing. This vibration isolator absorbs and dampens vibrations generated by the compression mechanism, preventing them from being amplified by the housing and transmitted to the vehicle body, thus resolving the contradiction between housing protection capability and vibration transmission

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If the cooling device is housed inside the housing, then the housing contains all components, but the housing size increases leading to greater vibration amplification

Engineering Contradiction:
Improvecomponent integrationVSAvoidvibration amplification
Core Design Contradiction:
Device complexityVSObject-generated harmful factors

Solution Approach 1:

The air compression device is segmented into two separate parts: the compression mechanism housed in the housing, and the cooling device positioned outside the housing. This segmentation allows the housing to be downsized, reducing its vibration amplification effect, while the cooling device remains accessible outside for heat dissipation

Inventive Principle:
Principle #1Segmentation

3Object-generated harmful factors

If the housing is downsized to reduce vibration amplification, then vibration transmission to the vehicle is reduced, but space for housing components and protection capability is reduced

Engineering Contradiction:
Improvevibration transmissionVSAvoidhousing protection capability
Core Design Contradiction:
Object-generated harmful factorsVSStrength

Solution Approach 1:

The vibration isolator serves as a mediator that enables the housing to be downsized for reduced vibration amplification while still providing adequate protection. The vibration isolator compensates for the reduced structural mass by actively damping vibrations, allowing the housing to be smaller without sacrificing protection capability

Inventive Principle:
Principle #24Intermediary (Mediator)

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 results in reduced vibration transmission to the vehicle, enhancing riding comfort by minimizing the amplification of vibrations from the compression mechanism, while also allowing for a more compact and efficient design.

Implementation Method 1

the connecting structure includes a vibration isolator which is in contact with the top plate and is configured to reduce vibration transmission from the compression mechanism to the vehicle

Methodology Applied
Scientific EffectVibration isolation: Damping

Implementation Method 2

a fan device for blowing out air toward the cooling pipe

Methodology Applied
Scientific EffectForced convection cooling: Forced Convection

Data Source

PatentEP3306097B1Air compression device
Publication Date: 2023.10.18 NABTESCO CORP
  • EP3306097B1 patent drawingFigure 1
  • EP3306097B1 patent drawingFigure 2
  • EP3306097B1 patent drawingFigure 3

AI summary

The present application discloses an air compression device which includes a compression mechanism configured to compress air and generate compressed air, a housing in which the compression mechanism is housed, and a cooling device configured to cool the compressed air outside the housing.