Heating Device Infrared Coating Surface Roughness
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Solution Overview
Problem
Existing heating devices for smoking sets suffer from low power utilization efficiency due to infrared ray reflection at the interface between the infrared electrothermal coating and the base body, which reduces preheating speed and smoke generation efficiency, impacting user experience.
Innovation Solution
A heating device with a base body having an outer surface with increased surface roughness to reduce infrared ray reflection, combined with an infrared electrothermal coating and a reflection element or heat insulation element to enhance power efficiency and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If an infrared electrothermal coating is applied on a smooth base body surface, then the device structure is simple and easy to manufacture, but infrared rays are reflected at the interface reducing power utilization efficiency
Solution Approach 1:
The invention changes the surface roughness parameter of the base body from smooth to rough (with roughness Ra of 0.4-2.0 μm). This parameter change reduces the reflectivity of the interface between the base body and infrared electrothermal coating, thereby reducing infrared ray reflection loss and improving power utilization efficiency.
2Reliability
If a rough surface is created on the outer surface of the chamber, then infrared ray transmission and emission are improved, but the manufacturing process becomes more complex
Solution Approach 1:
The invention specifies a quantitative range for surface roughness (Ra of 0.4-2.0 μm) that optimizes infrared radiation efficiency while remaining achievable through standard manufacturing processes such as sandblasting, chemical etching, or mechanical grinding, thus balancing performance improvement with manufacturing feasibility.
3Productivity
If the infrared electrothermal coating radiates infrared rays towards the smoking product, then heating effectiveness is improved, but reflection at the base body interface reduces preheating speed and smoke generation efficiency
Solution Approach 1:
By modifying the base body surface roughness parameter, the invention reduces infrared ray reflection at the coating-base body interface. This increases the amount of infrared radiation transmitted into the smoking product, thereby improving preheating speed and smoke generation efficiency without requiring additional energy input.
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 improves the power efficiency of the heating device by reducing infrared ray reflection, leading to faster preheating and smoke generation, thereby enhancing user experience and the overall performance of the smoking set.
Implementation Method 1
the infrared electrothermal film generates heat through electrification
Implementation Method 2
heats the smoking product in the tube by converting the heat into the form of infrared radiation
Implementation Method 3
a surface roughness of the outer surface of the chamber being greater than a surface roughness of an inner surface of the chamber
Data Source
AI summary
A heating device, used for heating an aerosol generating substrate to form an aerosol, comprises a heating body, wherein the heating body comprises a base body configured to have a chamber for receiving at least part of the aerosol generating substrate and further comprises an infrared radiation coating formed on the outer surface of the chamber and used for generating infrared rays after a temperature rise and transmitting energy to the aerosol generating substrate in the chamber at least in an infrared radiation manner, so that at least one component in the aerosol generating substrate is volatilized to form an aerosol, wherein the surface roughness of the outer surface of the chamber is greater than the surface roughness of the inner surface of the chamber. A rough surface is formed at an interface between the outer surface of the base body and the infrared electrothermal coating.