Rotatable Ventilation Diffuser Shutter Mechanism

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Solution Overview

Problem

Existing perfume diffusers for ventilation systems in vehicles lack the ability to control or stop the diffusion of perfume, relying solely on ventilation speed adjustment and continuing passive evaporation when the system is stopped.

Innovation Solution

A diffuser design with rotatable shutter flaps and a magnetic connection system that allows for adjustable airflow through the diffuser, enabling controlled perfume diffusion and complete closure to stop scent release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the ventilation system is switched off, then energy consumption is reduced, but passive evaporation continues causing unnecessary perfume loss

Engineering Contradiction:

Improveperfume lossVSAvoiduser control

Core Design Contradiction:

Loss of energyVSEase of operation

Solution Approach 1:

The shutter mechanism is pre-positioned to automatically close when the ventilation system stops, preventing passive evaporation before it occurs. This preliminary action eliminates perfume loss during system downtime without requiring user intervention.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses the ventilation system's own operational state to control the shutter position. When the fan stops, the shutter automatically closes, making the system self-regulating and eliminating unnecessary perfume evaporation without additional energy consumption or user input.

Inventive Principle:

Principle #25Self-service

2Quantity of substance

If the ventilation speed is increased, then perfume diffusion intensity is improved, but energy consumption increases

Engineering Contradiction:

Improveperfume diffusion intensityVSAvoidventilation energy

Core Design Contradiction:

Quantity of substanceVSUse of energy by moving object

Solution Approach 1:

The shutter is divided into multiple adjustable segments or positions that can independently control airflow through different openings. This allows precise modulation of perfume diffusion intensity without requiring proportional increases in ventilation speed, thereby reducing energy consumption.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The shutter mechanism provides dynamic control over airflow by allowing real-time adjustment of opening positions. Users can optimize perfume diffusion intensity for each situation without constantly adjusting ventilation speed, enabling better control over the relationship between perfume output and energy input.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If the diffuser uses a simple fixed design, then device complexity is reduced, but the ability to control perfume diffusion is lost

Engineering Contradiction:

Improveperfume control capabilityVSAvoiddiffuser structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The shutter control mechanism is integrated with the existing ventilation system mounting structure. The shutter assembly combines airflow control functionality with the diffuser housing, eliminating the need for separate control mechanisms and reducing overall device complexity while maintaining control capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shutter mechanism serves multiple functions: it controls perfume diffusion intensity, prevents passive evaporation when the system is off, and can be integrated with various ventilation system types. This multi-functionality justifies the added complexity by providing comprehensive control without requiring multiple separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables precise control over perfume intensity and complete cessation of diffusion, reducing unnecessary evaporation and improving user flexibility.

Implementation Method 1

The device for rotational connection of the front shutter with the central shaft is a magnetic system comprising at least one magnet

Methodology Applied

Scientific EffectMagnetic connection: Magnetism

Implementation Method 2

evaporation continues to occur passively, through the openings provided for this purpose in the housing

Methodology Applied

Scientific EffectEvaporation: Evaporation

Data Source

PatentEP4255512B1Diffuser attaching on a ventilation grill for the controlled dispensing of an air freshener

Publication Date: 2025.01.01 PROD CHIMS BERGER

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AI summary

The invention relates to a diffuser (20) which comprises a rear attachment clip (62), a front housing (22) for which the two opposite rear walls (30, 32) each comprise at least one slot enabling the formation of an airflow flowing axially through the housing, a support (46) for a perfumed material, two opposed external shutter flaps (80, 82) which are coupled together to form an assembly which is rotatably mounted with respect to the housing (22) and each of which comprises at least one opening (84, 86) to enable the passage of the airflow through the housing, and wherein the shutter flap assembly (80, 82) is connected in rotation to the rear attachment clip (62) and the housing (22) is rotatably mounted with respect to the rear attachment clip (62) in order to allow an adjustment of the angular position of the housing with respect to the shutter flap assembly (80, 82).