E-vaping Device Heater Sleeve Isolates Connections
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Solution Overview
Problem
E-vaping devices experience discoloration and material reactions due to the interaction between liquid aerosol formulations and conductive materials like copper in the heater coil connections, leading to potential performance issues.
Innovation Solution
The e-vaping device incorporates a sleeve that covers the connection between the heater and electrical lead wires, using crimping, soldering, or spot welding methods, to prevent material reactions and discoloration, with the sleeve positioned to avoid contact with the wick and partially close off the space between the heater and slots, reducing hotspot formation and material interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive materials like copper are used in heater coil connections, then electrical conductivity and temperature resistance are improved, but material reactions and discoloration occur due to interaction with liquid aerosol formulations
Solution Approach 1:
The patent introduces a non-conductive sleeve as an intermediary component between the conductive heater coil and the liquid aerosol formulation. This sleeve acts as a barrier that prevents direct contact between the copper electrical leads and the liquid, thereby eliminating material reactions and discoloration while allowing electrical current to flow through the heater coil through the sleeve's opening.
Solution Approach 2:
The patent extracts the conductive electrical leads from direct exposure to the liquid aerosol environment by routing them through a non-conductive sleeve. This separation removes the harmful interaction between the conductive material and liquid while maintaining the electrical connection function.
2Object-affected harmful factors
If the sleeve covers the electrical connection area, then material reactions are prevented, but the structural complexity increases
Solution Approach 1:
The sleeve serves multiple functions simultaneously: it provides electrical insulation to prevent material reactions, structural support to hold the heater coil in place, and mechanical protection for the electrical connections. By combining these functions into a single component, the patent avoids increasing overall device complexity while achieving comprehensive protection.
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 prevents discoloration and material reactions, ensuring consistent performance and extending the lifespan of the device by isolating the electrical connections from the liquid and wick, thus maintaining the integrity of the heating assembly.
Implementation Method 1
a heater configured to heat the liquid material to a temperature sufficient to vaporize the liquid and form a vapor
Implementation Method 2
The heater element includes a resistive heater coil
Data Source
AI summary
Example embodiments relate to a cartomizer including a housing, a fluid reservoir, configured to store an e-fluid, in the housing, a vaporizer configured to vaporize the e-fluid, the vaporizer including a heater having at least one end portion connected to an electrical lead wire, and a sleeve covering the connection between the end portion of the heater and the electrical lead wire.