Vaporizer Eutectic Connection via Conductive Adhesive Heating
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Solution Overview
Problem
Conventional electronic cigarette vaporizer devices using wick-coil technology face issues such as 'dry puff' due to lack of liquid supply leading to local overheating and pollutant production, and are prone to leaks, necessitating an improved method for stable and low-ohmic resistance electrical connection at high temperatures.
Innovation Solution
An electrically conductive adhesive is applied between the vaporizer and carrier to form both a mechanical and electrical connection, with an additional heating step to create a eutectic connection, reducing ohmic resistance and enhancing thermal stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wick-coil technology is used for vaporizer, then liquid transport is achieved through capillary forces, but local overheating and pollutant production occur due to lack of liquid supply
Solution Approach 1:
The patent changes the physical state and material properties of the connection between vaporizer and carrier by applying high temperature heating (above eutectic point) to transform the adhesive from a simple bonding agent to a eutectic alloy connection, achieving both mechanical strength and electrical conductivity
Solution Approach 2:
The patent uses a composite approach by combining the vaporizer (silicon-based), adhesive (metal-containing), and carrier into an integrated structure where the adhesive forms a eutectic alloy connection, achieving multiple functions (mechanical bonding, electrical connection, thermal stability) simultaneously
2Strength
If adhesive bonding is used to connect vaporizer to carrier, then mechanical connection is achieved, but high ohmic resistance occurs in electrical connection
Solution Approach 1:
The patent applies temperature as a critical parameter, heating the adhesive-vaporizer interface above the eutectic point to transform the material state and create a low-resistance electrical path while maintaining mechanical bonding
Solution Approach 2:
The patent exploits the eutectic phase transition of the adhesive material, where heating above the eutectic point causes local melting and alloy formation, creating a metallurgical bond with both mechanical strength and electrical conductivity
3Reliability
If high temperature heating is applied to form eutectic connection, then low ohmic resistance is achieved, but risk of damaging vaporizer components increases
Solution Approach 1:
The patent applies heating locally at the adhesive-vaporizer contact area rather than uniformly across the entire vaporizer, concentrating thermal energy only where needed to form the eutectic connection without exposing other components to damaging temperatures
Solution Approach 2:
The patent performs preliminary actions by carefully selecting adhesive materials with appropriate eutectic points and preparing the connection interface before heating, ensuring that the high temperature is applied only briefly and locally to achieve the desired connection without damage
4Adaptability or versatility
If thermal cycling occurs during vaporizer operation, then temperature variations are experienced, but mechanical stresses and connection instability increase
Solution Approach 1:
The patent accounts for thermal expansion by creating a eutectic alloy connection that accommodates temperature-induced dimensional changes, reducing mechanical stresses during thermal cycling between storage and operating temperatures
Solution Approach 2:
The eutectic alloy connection acts as a composite material combining the vaporizer substrate and adhesive, creating a thermally stable interface that maintains mechanical and electrical properties across temperature cycles
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 eutectic connection provides a stable and low-ohmic electrical link between the vaporizer and electrical line, minimizing temperature-induced mechanical stresses and preventing high ohmic resistance, while being temperature-stable above vaporization temperatures.
Implementation Method 1
an additional heating step is carried out to form a eutectic connection between the vaporizer and the adhesive
Implementation Method 2
applying an electrically conductive adhesive between the vaporizer and the carrier to form an electrical connection
Implementation Method 3
an additional heating step is carried out to form a eutectic connection between the vaporizer and the adhesive
Implementation Method 4
The vaporizer vaporizes the liquid and the vaporized liquid can be added to an air flow as a vapor and/or aerosol
Implementation Method 5
the liquid is transported by capillary forces from a wick structure in the liquid reservoir to an inlet side of the vaporizer
Data Source
AI summary
A method for manufacturing a vaporizer device for an inhaler, preferably for an electronic cigarette product, comprising at least one electric vaporizer, at least one electrical line for supplying the vaporizer with electric current, and a carrier for supporting the vaporizer, comprising the application of an electrically conductive adhesive between the vaporizer and the carrier to form an electrical connection of the vaporizer to the electrical line, wherein an additional heating step is carried out to form a eutectic connection between the vaporizer and the adhesive.