Vehicle Vent Diffuser Perpendicular Airflow Orientation

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Solution Overview

Problem

Existing air fresheners for vehicles do not efficiently disperse scent throughout the vehicle and are often obstructive, with diffusers extending parallel to airflow, leading to incomplete scent distribution and frequent replacement needs.

Innovation Solution

A diffuser with a hollow scented polymeric body that attaches to a vehicle's vent via a clip, oriented such that airflow is perpendicular to the body's longitudinal axis, allowing for efficient scent dispersion and minimizing airflow obstruction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the diffuser extends parallel to the direction of air flow, then the diffuser structure is simple, but the diffuser contacts only a small portion of the air and does not efficiently disperse scent throughout the vehicle

Engineering Contradiction:
Improvescent dispersion efficiencyVSAvoiddiffuser orientation complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The diffuser is oriented perpendicular to the airflow direction rather than parallel, changing the spatial dimension of interaction. This perpendicular orientation allows the diffuser to contact a larger portion of the airflow cross-section, significantly improving scent dispersion efficiency throughout the vehicle cabin.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If the diffuser uses solid rectangular or circular bodies, then the diffuser structure is simple, but the diffuser obstructs at least a portion of the airflow through the vent

Engineering Contradiction:
Improveairflow efficiencyVSAvoiddiffuser shape complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The diffuser employs a curved or aerodynamic shape instead of solid rectangular or circular bodies. This curved design reduces airflow obstruction by allowing air to flow more smoothly around and through the diffuser structure, maintaining vent airflow efficiency while still providing effective scent dispersion.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Duration of action of moving object

If the diffuser emits less scent over time, then the diffuser material is durable, but the diffuser needs to be replenished or replaced often

Engineering Contradiction:
Improvefragrance durationVSAvoidreplacement frequency
Core Design Contradiction:
Duration of action of moving objectVSLoss of time

Solution Approach 1:

The patent utilizes polymer materials with specific properties that control the release rate of fragrance over time. By changing the material parameters (polymer type, porosity, fragrance concentration), the diffuser maintains consistent scent emission for extended periods, reducing replacement frequency while ensuring long-lasting fragrance coverage in the vehicle.

Inventive Principle:
Principle #35Parameter changes

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 diffuser effectively disperses scent to a larger area of airflow, providing a longer-lasting fragrance experience without obstructing airflow, and is designed for easy handling and aesthetic appeal.

Implementation Method 1

a hollow scented body that emits a fragrance

Methodology Applied
Scientific EffectDiffusion: Diffusion

Data Source

PatentUS20220234426A1Diffuser including scented polymeric body
Publication Date: 2022.07.28 ENERGIZER GRP LTD
  • US20220234426A1 patent drawing
  • US20220234426A1 patent drawing
  • US20220234426A1 patent drawing

AI summary

A diffuser includes a clip that attaches to a vent of a vehicle air conditioning system. The diffuser also includes a hollow scented body that emits a fragrance. The hollow scented body extends along a longitudinal axis and defines a cavity. The hollow scented body is mounted to the clip such that airflow from the vent is in a direction other than parallel to the longitudinal axis of the hollow scented body when the diffuser is attached to the vent.