Vehicle Fragrance Diffuser Orifice Control for Noise Reduction
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Solution Overview
Problem
Existing fragrance diffusers in motor vehicles are limited by their dependence on ventilation systems, lack of flexibility, and inability to maintain optimal fragrance quality, particularly during engine stop phases where background noise becomes disturbing.
Innovation Solution
An autonomous fragrance diffuser device with a rotary blower and adjustable orifice control, connected to the vehicle's on-board computer, which adjusts fragrance release based on outside temperature and usage duration to maintain consistent olfactory experience and minimize noise pollution during engine stop phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the blower operates continuously to diffuse fragrance, then fragrance diffusion is maintained, but noise disturbance increases during engine stop phases
Solution Approach 1:
The blower operates in periodic cycles rather than continuously, with the control unit switching the blower between active and inactive states based on engine status and temperature conditions, thereby reducing noise during engine stop phases while maintaining fragrance diffusion when needed
Solution Approach 2:
The control unit receives feedback from the engine status signal and temperature sensor to dynamically adjust blower operation, enabling the system to adapt fragrance diffusion and noise levels according to real-time driving conditions
2Productivity
If the orifice remains open to allow fragrance exchange, then fragrance diffusion is enhanced, but fragrance quality degrades due to excessive exposure
Solution Approach 1:
The orifice is opened and closed in periodic cycles controlled by the control unit, allowing fragrance to diffuse into the housing during active phases while preventing excessive exposure and quality degradation during closed phases, with cycle duration adjusted based on temperature
Solution Approach 2:
The orifice control is dynamically adjusted by the control unit based on real-time temperature data, modifying the opening/closing cycle characteristics to optimize fragrance diffusion rate while maintaining consistent fragrance quality across varying operating conditions
3Productivity
If basic fragrance diffuser devices are used, then fragrance diffusion is achieved, but dashboard harmony and perceived quality are degraded
Solution Approach 1:
The fragrance diffuser device is integrated into the dashboard structure itself, with the housing forming part of the dashboard assembly and the passage formed in the dashboard, thereby achieving fragrance diffusion while maintaining dashboard aesthetic harmony and perceived quality
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 device ensures optimal fragrance diffusion and reduced noise disturbance by adapting fragrance release to temperature and usage, enhancing passenger comfort, especially in vehicles with 'Stop and Start' systems.
Implementation Method 1
a rotary blower (4) able to generate a flow of air circulating in this housing (2) before being diffused
Implementation Method 2
closure means (7) capable of managing the opening and closing of the orifice (6)
Data Source
Figure 1~2
AI summary
The present invention relates to a method for diffusing at least one fragrance into the passenger compartment of a motor vehicle from a fragrance diffuser device having a hollow body (2) that defines a housing for accommodating a cartridge (3) containing an element for storing and diffusing a fragrance, a rotary blower (4) that is able to generate a flow of air that passes through said hollow body (2) and is discharged into said passenger compartment via an outlet duct (5) in fluidic communication with said hollow body (2), said cartridge (3) comprising an orifice (6) through which the exchange between the flow of air generated by said blower (4) and said fragrance is able to take place in said hollow body (2) such that said flow of air discharged into the passenger compartment is perfumed, said diffuser device also comprising shut-off means (7) that are able to manage the opening and closing of the orifice (6) in said cartridge (3), said method consisting in stopping or reducing the speed of the blower (4) during phases in which the engine of said vehicle is stopped while said vehicle remains electrically powered, characterized in that it consists in increasing the ratio between the open and closed durations of the orifice (6) in said cartridge as the period of use of said cartridge (3) over a diffusion cycle increases.