Airflow Heating Cigarette Mechanism for Even Temperature Distribution
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Solution Overview
Problem
Existing aerosol generating devices face challenges with uneven temperature distribution in heated airflow, leading to variable carbonization rates and instability in the smoke inhaled by users.
Innovation Solution
A mechanism for heating cigarettes by airflow, featuring a central heat source and a cylindrical heat exchange space located 1 mm to 2.5 mm from the central heat source, ensuring even temperature distribution within the hot airflow. Additionally, a perforated partition plate and heat-insulating materials are used to enhance heating efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If hot airflow is heated through internal or external peripheral heating, then the airflow can be heated to generate hot airflow, but the temperature distribution within the heated airflow becomes uneven
Solution Approach 1:
The patent introduces a heat exchange medium (airflow) that indirectly transfers heat from the heating element to the cigarette. The heating element heats the airflow, which then circulates through the cigarette, providing uniform heating without direct contact. This intermediary approach prevents localized overheating while ensuring even temperature distribution throughout the cigarette.
Solution Approach 2:
The patent utilizes fluid dynamics by creating a controlled airflow system that circulates hot air through the cigarette. The pneumatic flow ensures continuous movement of heated air, maintaining uniform temperature distribution and preventing hot spots that would occur with static heating methods.
2Productivity
If contact heating method is used, then heating can be achieved through direct contact, but localized excessive carbonization occurs at the contact area
Solution Approach 1:
The patent uses hot airflow as an intermediary heating medium that transfers thermal energy to the cigarette without direct contact between the heating element and the cigarette. This eliminates localized excessive carbonization while maintaining heating efficiency through controlled convective heat transfer.
Solution Approach 2:
The patent replaces direct mechanical contact heating with a fluid-based heating system. Instead of the heating element physically touching the cigarette, hot airflow is used to transmit thermal energy, eliminating the harmful localized carbonization associated with contact heating.
3Temperature
If non-contact heating methods like infrared or microwave heating are used, then uniform heat distribution can be achieved, but the cost and structural complexity increase significantly
Solution Approach 1:
The patent employs a simple, cost-effective heating mechanism using basic heating elements and airflow control, avoiding the need for expensive infrared or microwave heating systems. The design prioritizes simplicity and affordability while achieving the desired uniform heating效果 through clever use of convective heat transfer.
Solution Approach 2:
The patent uses a straightforward pneumatic airflow system to distribute heat uniformly across the cigarette. This simple fluid-based approach achieves the uniform heating effect of complex infrared or microwave systems without the associated high costs and structural 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 ensures consistent and even heating of cigarettes, improving the stability of the smoke and enhancing the overall smoking experience while being cost-effective and safe.
Implementation Method 1
The airflow enters from a bottom side of the heat exchange space, and forms a hot airflow with even temperature after passing through the heat exchange space
Implementation Method 2
the heating body being in direct contact with the aerosol generating section of the cigarette, which is heated to generate the aerosol through heat conduction
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present application discloses a mechanism for heating cigarette by airflow, comprising a central heat source, and a heat exchange space surrounding the central heat source. The airflow enters from a bottom side of the heat exchange space and forms a hot airflow with even temperature after passing through the heat exchange space, and the hot airflow exits from an upper side of the heat exchange space and heats the cigarette. The present application also provides a heated cigarette applying the mechanism for heating cigarette by airflow provided by the present application. The problems regarding the temperature stability and evenness of the hot airflow for heating cigarettes are effectively solved by the present application through a simple structural solution. This approach is not only cost-effective but also brings outstanding results, demonstrating a strong practical application effect.