Embedded Heating Assembly for Stable Aerosol Substrate Insertion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The resistor heating circuit on existing heating assemblies for aerosol-forming devices is prone to falling off from the substrate due to bending and deformation during high-temperature heating, leading to instability and non-uniform heating of the aerosol-forming substance.
Innovation Solution
A heating assembly with a substrate and a self-supporting heating body, featuring extension portions that are directly inserted into the aerosol-forming substance, embedded in the substrate, and connected by a bonding layer, ensuring stability and uniform heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a thin film resistor heating circuit is printed or coated on a ceramic substrate, then the heating assembly can be manufactured easily, but the resistor heating circuit falls off from the substrate after high-temperature heating and repeated insertion
Solution Approach 1:
The heating body is divided into a separate component from the substrate. Instead of printing the resistor circuit directly on the substrate, a distinct heating body with resistor circuit is formed and then embedded into the substrate, separating the heating function from the structural support function.
Solution Approach 2:
The heating body is embedded into the substrate, merging two separate components (heating body and substrate) into a unified structure. This embedding process creates a strong mechanical bond that prevents the heating circuit from falling off during high-temperature heating and repeated insertion.
2Duration of action of moving object
If the heating assembly is inserted into the aerosol-forming substance multiple times, then the heating assembly can be used repeatedly, but the substrate bends and deforms causing the heating circuit to fall off
Solution Approach 1:
The substrate provides a rigid structural framework that cushions and resists bending forces before they can cause damage. The embedding of the heating body into the substrate creates a reinforced structure that maintains its shape during repeated insertion and high-temperature heating, preventing deformation that would lead to circuit failure.
3Device complexity
If the resistor heating circuit contacts only the aerosol-forming substance on one side of the substrate, then the heating assembly structure is simple, but the aerosol-forming substance is not heated uniformly
Solution Approach 1:
The heating body is designed to extend in multiple dimensions, with extension portions that protrude from the substrate surface. This allows the heating circuit to contact the aerosol-forming substance from multiple sides and angles, achieving uniform heating without significantly increasing device complexity.
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 solution prevents the heating body from detaching from the substrate, enhances stability, and improves heat utilization and uniformity, resulting in a more reliable and efficient heating process.
Implementation Method 1
the first extension portion and the second extension portion of the heating body are configured to be at least partially inserted into the aerosol-forming substance and generate heat to heat the aerosol-forming substance when energized
Data Source
Figure 1a~1b
Figure 1c~1d
Figure 1e~2
AI summary
A heating assembly and an aerosol forming device. The heating assembly (30) comprises a base plate (31) and a heating body (32), wherein the heating body (32) is embedded in the base plate (31), and the heating body (32) comprises a first extension portion (321) and a second extension portion (322) connected to one end of the first extension portion (321), which are arranged spaced apart from each other; and the base plate (31) and the heating body (32) are used for being at least partially inserted into an aerosol forming substrate and generating heat to heat the aerosol forming substrate when the first extension portion (321) and the second extension portion (322) are powered on. The heating body (32) in the heating assembly (30) can be directly inserted into the aerosol forming substrate, and has a good stability.