Compressed-Air Aroma Diffuser With Reflux Structure for Longer Use

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Solution Overview

Problem

Existing aroma diffusers face issues with short operating time of essential oil, high manufacturing cost, and insufficient atomization, often resulting in fast consumption and excessive noise due to mechanical atomization methods.

Innovation Solution

An aroma diffuser design featuring a compression plug, oil tube, atomizing chamber, and rotary spray outlet cover, with specific distance ratios and multi-layer reflux structures to achieve gentle spray, reduced noise, and extended operating time, utilizing a rotary mechanism for 360° spray.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If mechanical atomization is used with compressed air acceleration, then atomization effect is improved, but noise level increases and atomization is insufficient

Engineering Contradiction:
Improveatomization effectVSAvoidnoise level
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The atomizing chamber is divided into multiple sections with spray outlets at different positions and angles. The spray outlet sleeve is divided into multiple segments with individual spray outlets, allowing the atomized essential oil to be discharged from multiple directions simultaneously, improving overall atomization effect while distributing the mechanical stress and noise generation

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The rotary spray outlet cover is designed to rotate, dynamically changing the spray direction and covering a wider area (360° coverage). This dynamic mechanism distributes the atomization process over time and space, reducing the intensity of noise at any single moment while maintaining effective atomization coverage

Inventive Principle:
Principle #15Dynamics

2Productivity

If compression plug is used to accelerate air for atomization, then spray formation is improved, but essential oil consumption increases

Engineering Contradiction:
Improvespray formationVSAvoidessential oil consumption
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The spray outlet sleeve features spray outlets with different aperture sizes and orientations at different locations. This local variation optimizes the essential oil distribution, ensuring that each region receives an appropriate amount of essential oil for effective atomization without excessive consumption. The multi-directional spray outlets improve spray formation efficiency while controlling oil usage

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The distance between the air outlet and chamber wall is specifically set at 11-13 times the air outlet aperture diameter, optimizing the air-essential oil mixing ratio. This parameter optimization ensures efficient atomization with minimal essential oil consumption by achieving the right balance between air flow velocity and essential oil delivery

Inventive Principle:
Principle #35Parameter changes

3Object-affected harmful factors

If blocking structure is added at air outlet opening, then noise is reduced, but atomization becomes insufficient

Engineering Contradiction:
Improvenoise reductionVSAvoidatomization sufficiency
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

Instead of blocking the air outlet in a single dimension, the invention distributes spray outlets in multiple dimensions - different heights, radial positions, and angles on the spray outlet sleeve. This multi-dimensional arrangement allows noise reduction through distributed discharge while maintaining sufficient atomization through comprehensive spatial coverage

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

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 design provides efficient atomization with reduced noise levels, elongated essential oil operation, and a 360° rotary spray capability, enhancing user experience and cost-effectiveness.

Implementation Method 1

The aroma diffuser works according to Bernoulli's principle. Compressed air is accelerated by a compression plug to generate negative pressure, the essential oil in an essential oil bottle is sucked up through an oil tube and blown out to form a spray

Methodology Applied
Scientific EffectBernoulli's principle: Bernoulli Effect

Implementation Method 2

air ejected from the compression plug is mixed with a liquid of the essential oil derived from the oil tube and then enters into the atomizing chamber through an air outlet, the atomizing chamber comprises a chamber, a spray outlet sleeve disposed in the chamber, and a spray outlet disposed on the chamber

Methodology Applied
Scientific EffectMechanical atomization:

Data Source

PatentUS12409246B2Aroma diffuser
Publication Date: 2025.09.09 ZHANGZHOU IHASTEK INC
  • US12409246B2 patent drawing
  • US12409246B2 patent drawing
  • US12409246B2 patent drawing

AI summary

An aroma diffuser comprises a compression plug connected to an air pump, an oil tube, an atomizing chamber, a spray outlet base, and a rotary spray outlet cover. The atomizing chamber comprises a chamber, a spray outlet sleeve, and a spray outlet, a distance between the air outlet and a chamber wall of the atomizing chamber is 11-13 times an aperture diameter of the air outlet, the spray outlet of the atomizing chamber extends downward to form a spray outlet channel, the spray outlet sleeve is sleeved outside of the spray outlet channel, atomized essential oil enters into the gaps between the spray outlet sleeve and the spray outlet channel from the groove notch and is then sprayed out, a bottom of the spray outlet sleeve is obliquely disposed and comprises a first reflux hole, and the rotary spray outlet cover is rotatably connected to the spray outlet base.