Aroma Diffuser Airflow Modes Prevent Passivation

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Solution Overview

Problem

Long-term use of aroma diffusers leads to the formation of passivation layers in the atomizing space and oil delivery pipe, causing poor atomization effects and eventual failure due to residual essential oil accumulation, which blocks airflow and hinders the movement of essential oil.

Innovation Solution

The aroma diffuser employs an air delivery structure with alternating impinging and buffering airflow modes to break through surface tension and remove residual essential oil from the atomizing space and pipe walls, preventing passivation layer formation, and includes a sweeping mode to clear the atomizing space without forcing essential oil into the oil storage bottle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the aroma diffuser is used for long-term operation, then the atomization function is initially effective, but residual essential oil accumulates to form passivation layers that block airflow and hinder essential oil movement, causing atomization effect to deteriorate

Engineering Contradiction:

Improveatomization effectVSAvoidpassivation layer formation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies periodic action by implementing alternating high-speed and low-speed airflow modes. The high-speed airflow mode is used to break passivation layers and remove residual essential oil, while the low-speed airflow mode performs normal atomization. This periodic switching prevents continuous accumulation of residual oil and maintains atomization effectiveness over long-term operation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent converts the harmful effect of high-speed airflow (which could potentially blow essential oil back into the storage bottle) into a beneficial cleaning function. By controlling the airflow to act on the atomizing space and pipe walls specifically, the high-speed flow breaks passivation layers and removes residual oil deposits, turning what could be a harmful backflow into a useful self-cleaning mechanism.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If high-speed airflow is continuously applied to maintain atomization, then atomization effect is maintained, but residual essential oil accumulates faster in the atomizing space and oil delivery pipe

Engineering Contradiction:

Improveatomization effectVSAvoidresidual essential oil accumulation

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent implements periodic switching between high-speed airflow mode (for cleaning) and low-speed airflow mode (for normal operation). During low-speed mode, residual essential oil is swept away from the atomizing space without being forced back into the storage bottle. This periodic action prevents continuous accumulation while maintaining atomization effectiveness.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent applies dynamics by making the airflow speed variable rather than constant. The air delivery structure dynamically adjusts between high-speed and low-speed modes based on operational needs. This dynamic control allows the system to optimize between maintaining atomization effect and preventing residual oil accumulation, adapting the airflow characteristics to different operational phases.

Inventive Principle:

Principle #15Dynamics

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 solution effectively removes residual essential oil, maintaining the aroma diffuser's atomization performance and extending its service life by preventing passivation layer formation and ensuring consistent airflow and atomization.

Implementation Method 1

By using Venturi principle, the high-speed airflow generated by the air delivery structure passes by the oil nozzle, thereby forcing the essential oil in the oil storage bottle to flow out of the oil nozzle and mix with the high-speed airflow to produce an atomization effect

Methodology Applied

Scientific EffectVenturi principle: Venturi Effect

Implementation Method 2

the impinging airflow flows through the atomizing space and breaks through a surface tension of the essential oil

Methodology Applied

Scientific EffectSurface tension: Surface Tension

Data Source

PatentUS11612671B2Aroma diffuser

Publication Date: 2023.03.28 PUZHEN LIFE CO LTD

AI summary

An aroma diffuser, including: an oil supply structure, provided with an oil storage bottle for containing essential oil and an oil delivery pipe connected to the oil storage bottle, the oil delivery pipe includes a liquid outlet, and an end side of the oil delivery pipe is provided with an atomizing space; and an air delivery structure, provided with a working mode and a wall-breaking mode, in the working mode, an atomizing airflow is generated, and a negative pressure is formed to force the essential oil to enter the atomizing space, in the wall-breaking mode, an impinging airflow and a buffering airflow are alternately generated, or a buffering airflow and an impinging airflow are alternately generated, the impinging airflow flows through the atomizing space and breaks through a surface tension of the essential oil, the buffering airflow flows through the atomizing space and takes the essential oil away.