Diffusion Device Wick Heat Trapping
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Solution Overview
Problem
Existing diffusion devices for volatile materials lack efficiency in diffusing active materials, with current methods relying on heaters and fans that require user adjustment and are not cost-effective or user-friendly.
Innovation Solution
The diffusion device incorporates a heater and/or fan with an active material diffusion-interference member positioned directly above the wick, and vents with a cross-sectional size and shape smaller than the wick, trapping heat and increasing volatilization and dispersion of active materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a heater is used to evaporate and dispense volatile materials, then the diffusion rate of active materials is improved, but the heat is not effectively trapped around the wick, reducing the efficiency of volatilization
Solution Approach 1:
A reflective barrier is introduced as an intermediary element between the heater and the surrounding environment. This barrier reflects heat back toward the wick, preventing heat loss to the housing and improving the efficiency of volatilization without requiring additional heating power.
Solution Approach 2:
The thermal environment around the wick is modified by changing the reflectivity and insulation parameters of the housing structure. By adjusting these thermal parameters, heat is retained more effectively in the vicinity of the wick, enhancing volatilization efficiency.
2Productivity
If a fan is used to move vaporized material through vents, then the dispersion of active materials is improved, but the device complexity and cost increase
Solution Approach 1:
The housing structure is designed to perform the function of heat trapping and thermal management without requiring additional active components. The geometry and material properties of the housing itself provide the necessary thermal control, eliminating the need for fans or complex control systems.
Solution Approach 2:
The housing serves multiple functions: it contains the active material, provides structural support, traps heat through its geometric design, and facilitates dispersion through strategically positioned vents. This multi-functionality reduces the need for separate components and simplifies the overall device.
3Productivity
If vents with large cross-sectional area are used for immediate dispersion, then the dispersion of active materials is improved, but heat is not trapped effectively, reducing volatilization efficiency
Solution Approach 1:
The housing structure creates a localized thermal environment around the wick with high heat retention, while other regions of the housing allow for dispersion. The vents are positioned and sized to allow dispersion without compromising the localized heat trapping around the wick, maintaining both high wick temperature and effective dispersion.
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 configuration enhances the rate of diffusion of active materials by maintaining heat around the wick, leading to increased volatilization and dispersion compared to devices without these features, as demonstrated by testing protocols showing greater weight loss and efficiency.
Implementation Method 1
a heater disposed in a rear portion of the housing and spaced from the wick when a container is inserted into the housing
Implementation Method 2
An active material diffusion-interference member is disposed directly above and axially aligned with the wick when the container is inserted into the device, wherein the diffusion-interference member inhibits diffusion of the active material from the housing
Implementation Method 3
a container having a wick extending therefrom and a volatile material disposed therein
Implementation Method 4
heat generated by the heater is trapped around the wick, thus increasing volatilization and dispersion of the active material
Data Source
AI summary
A diffusion device includes a housing and an opening in the housing adapted for insertion of a container having an active material therein and a wick extending therefrom. The device further includes a heater disposed in a rear portion of the housing and spaced from the wick when a container is inserted into the housing. A vent is disposed in a front portion of the housing. An active material diffusion-interference member is disposed directly above and axially aligned with the wick when the container is inserted into the device, wherein the diffusion-interference member inhibits diffusion of the active material from the housing such that heat generated by the heater is trapped around the wick, thus increasing volatilization and dispersion of the active material from the diffusion device as compared to a diffusion device that does not have a diffusion-interference member.