Induction Heating Cigarette Device with Airflow Control
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Solution Overview
Problem
Current low-temperature baking cigarette devices have issues with inconsistent vaping taste due to prolonged preheating and charring of tobacco near heating elements, and they require continuous use without the ability to pause and resume vaping.
Innovation Solution
A cigarette device employing an electromagnetic induction heating element surrounded by a non-magnetic shielding heat sink material with high thermal conductivity, controlled by an airflow sensing apparatus and circuit control unit, allowing for quick and uniform heating and immediate stopping of the vaping process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heating element is used to heat the cigarette, then the cigarette can be baked to generate vapor, but the preheating time is prolonged and tobacco near the heating element is easily charred
Solution Approach 1:
The patent replaces the traditional Joule heating element with an electromagnetic induction heating system. The induction heating element generates a magnetic field that induces eddy currents in the cigarette tobacco, heating it through electromagnetic induction rather than direct thermal contact. This substitution of heating mechanism dramatically reduces preheating time and eliminates the charring problem near the heating element.
Solution Approach 2:
The patent introduces a non-magnetic shielding heat sink material as an intermediary between the electromagnetic induction heating element and the cigarette. This material shields the cigarette from direct electromagnetic radiation while allowing controlled heat transfer, preventing overheating and charring of tobacco near the heating element.
2Temperature
If a heating element is used to heat the cigarette, then the cigarette can be baked to generate vapor, but the vaping process cannot be stopped and resumed in the middle
Solution Approach 1:
The patent incorporates an airflow sensing apparatus that detects user inhalation and provides feedback to the circuit control unit. The control unit adjusts the electromagnetic induction heating element operation accordingly, enabling the system to start, pause, and resume heating based on real-time airflow detection. This feedback mechanism provides flexible vaping control that was not possible with traditional heating elements.
Solution Approach 2:
The patent makes the heating system dynamic and adjustable through the control unit that can modulate the electromagnetic induction heating element operation in real-time. The system transitions from static continuous heating to dynamic controlled heating that responds to user actions, enabling pause and resume functionality.
3Temperature
If a heating element is used to heat the cigarette, then the cigarette can be baked to generate vapor, but the vaping taste is inconsistent
Solution Approach 1:
The patent replaces contact-based Joule heating with non-contact electromagnetic induction heating. This substitution ensures uniform heat distribution throughout the cigarette tobacco without creating hot spots or charred areas, resulting in consistent vaping taste throughout the entire cigarette consumption process.
Solution Approach 2:
The patent uses non-magnetic shielding heat sink material with specific thermal conductivity properties to control heat distribution locally. This material ensures uniform heat transfer to the tobacco while preventing localized overheating, maintaining consistent heating quality throughout the cigarette.
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 reduces preheating time, prevents burnt tastes, and enables immediate vaping and stopping, ensuring consistent flavor and efficient tobacco utilization.
Implementation Method 1
an electromagnetic induction heating element, surrounding the outside of the loading cavity, the electromagnetic induction heating element being electrically connected to the power supply
Implementation Method 2
a material of the loading cavity is a non-magnetic shielding heat sink material with a thermal conductivity not lower than 20 W/(m·K)
Implementation Method 3
an airflow sensing apparatus, disposed in the housing, the airflow sensing apparatus being disposed in the fluid channel to sense an airflow speed in the fluid channel
Data Source
AI summary
A cigarette device includes a housing, and a loading cavity, an airflow sensor, a circuit control unit, and a power supply are disposed in the housing. A fluid channel is located between the loading cavity and the housing, and the fluid channel is in communication with the outside of the housing and the inside of the loading cavity. An electromagnetic induction heating element surrounds the outside of the loading cavity; and the electromagnetic induction heating element is electrically connected to the power supply, and the circuit control unit is electrically connected to the airflow sensor and the electromagnetic induction heating element. When the cigarette device is used in combination with a cigarette added with a magnetic material, the cigarette can be heated uniformly and generate vapor quickly, to ensure a consistent vaping taste and improve utilization of tobacco while achieving immediate vaping and immediate stopping, which helps improve user experience.