Ultrasonic Fragrance Diffuser Core-Rod Structure for Leak Control
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Solution Overview
Problem
Existing ultrasonic atomization fragrance devices suffer from liquid fragrance leakage at the mist outlet, leading to surface contamination and waste due to their inverted design.
Innovation Solution
A design featuring a housing with a liquid-conducting core rod, an atomizing sheet, and a casing pipe, where the liquid-conducting core rod is inserted into the casing pipe, reducing liquid pressure and preventing excessive liquid from leaking out of the mist outlet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fragrance device adopts an inverted design with the bottle positioned above the atomizing head, then the liquid fragrance can flow by gravity to the atomizing head, but the liquid fragrance leaks significantly at the mist outlet causing surface contamination and waste
Solution Approach 1:
The patent introduces a liquid-conducting core rod as an intermediary component between the liquid accumulation space and the atomizing sheet. This core rod provides a controlled liquid conduction path that prevents uncontrolled leakage while maintaining gravity-driven flow. The core rod acts as a mediator that regulates the liquid flow from the accumulation space through the atomizing sheet to the mist outlet, solving the contradiction between easy gravity flow and leakage prevention.
Solution Approach 2:
The patent changes the physical parameters of the liquid conduction system by introducing a core rod with specific dimensions and material properties. The core rod's structure (with through-holes or porous characteristics) modifies the flow parameters, controlling the liquid flow rate and pressure distribution. This parameter change enables the system to maintain stable atomization without excessive leakage, resolving the contradiction between gravity-driven flow and leakage control.
2Device complexity
If the liquid fragrance flows directly to the atomizing sheet without pressure control, then the atomization process is simple, but excessive liquid pressure causes significant leakage at the mist outlet
Solution Approach 1:
The liquid-conducting core rod serves as an intermediary pressure-regulating component between the liquid accumulation space and the atomizing sheet. It provides a controlled pathway that reduces liquid pressure before the liquid reaches the atomizing sheet, preventing excessive pressure from causing leakage. This intermediary structure maintains relatively simple atomization while controlling pressure to prevent waste.
Solution Approach 2:
The core rod structure changes the pressure parameters of the liquid flow system. By designing the core rod with specific geometry (through-holes, porous structure, or capillary channels), the system modifies the liquid flow resistance and pressure distribution. This parameter change enables pressure control without significantly increasing device complexity, preventing leakage while maintaining functional simplicity.
3Productivity
If the atomizing head is positioned with the mist outlet facing the atomizing sheet, then the atomization efficiency is improved, but atomized particles fall on the device surface causing contamination
Solution Approach 1:
The patent addresses the particle fallout issue by introducing a wind guide component that directs the atomized particles in a specific spatial direction. The wind guide creates a controlled airflow field that carries the atomized fragrance particles away from the device surface and into the surrounding environment. This dimensional control of particle trajectory maintains atomization efficiency while preventing surface contamination.
Solution Approach 2:
The wind guide component utilizes pneumatic principles to control the movement of atomized particles. By creating a directed airflow through the wind guide structure, the system uses gas flow to transport the liquid fragrance particles away from the atomizing head and device surface. This pneumatic control prevents particle deposition on surfaces while maintaining efficient atomization, resolving the contradiction between productivity and contamination.
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 effectively reduces liquid fragrance leakage by minimizing pressure on the liquid-conducting core rod, ensuring stable atomization and reducing surface contamination.
Implementation Method 1
The liquid-conducting core rod is inserted into the casing pipe, which can reduce liquid pressure on a surface of the liquid-conducting core rod
Implementation Method 2
The ultrasonic atomization method is to disperse liquid fragrance (essential oil) into small particles (atomization) through high-frequency vibration of an ultrasonic atomizing component
Implementation Method 3
the liquid fragrance can flow by its own gravity and then be atomized
Data Source
AI summary
A fragrance diffuser includes a housing and a bottle defining an accommodation cavity therein. An atomizing head assembly is disposed in the housing and connected to the bottle. The atomizing head assembly includes a liquid-conducting core rod, an atomizing sheet, an atomizing seat and a casing pipe. The atomizing seat is connected to the bottle and defines a liquid accumulation space connected to the accommodation cavity and located below the accommodation cavity. The casing pipe is located in the atomizing seat, the housing defines a mist outlet, and the casing pipe is located on a side of the atomizing sheet facing away from the mist outlet. The liquid-conducting core rod is inserted into the casing pipe, a first end of the liquid-conducting core rod is connected to the liquid accumulation space, and a second end of the liquid-conducting core rod is abutted against the atomizing sheet.