Split-Power Heated Smoking Unit for Cigarette-Like Use
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Solution Overview
Problem
Existing electrically operated smoking systems are bulky and inconvenient for smokers, as they do not resemble a lit-end cigarette in size, making them difficult to hold and use in a similar manner.
Innovation Solution
The system divides the power supply into a primary and secondary unit, with the secondary unit being powered by a rechargeable battery that maintains the aerosol-forming substrate at operating temperature, allowing it to be compact and similar in size to a lit-end cigarette, and includes bi-directional communication with a primary unit for efficient power management and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the smoking system includes a power supply and electronic circuitry, then it can operate heating elements to generate aerosol, but the device size becomes larger and less convenient for the smoker
Solution Approach 1:
The system is divided into a main body unit containing the power supply and electronic circuitry, and a separate heating unit containing the heating element and aerosol-forming substrate. This segmentation allows the main body to be larger with sufficient power capacity while the heating unit can be made compact and cigarette-like in size, improving ease of operation without sacrificing functionality.
2Volume of moving object
If the device is made smaller to resemble a lit-end cigarette, then it becomes more convenient to hold, but the power supply capacity is reduced
Solution Approach 1:
By separating the power supply from the heating unit, the heating unit can be miniaturized to cigarette-like dimensions while the power supply resides in the larger main body unit, resolving the contradiction between size and power capacity.
Solution Approach 2:
The power supply is pre-charged in the main body unit before the heating unit is detached for use. This preliminary charging action allows the compact heating unit to operate independently for an extended period without requiring a large battery, thus maintaining small size while ensuring sufficient energy availability.
3Duration of action of moving object
If the heating element operates continuously to maintain temperature, then aerosol generation is sustained, but energy consumption increases
Solution Approach 1:
The heating element operates in periodic cycles rather than continuously. The control circuitry activates the heating element only when needed to maintain the aerosol-forming substrate at the required temperature, allowing it to cool down and recharge between cycles. This periodic operation extends the duration of the smoking experience while reducing overall energy consumption from the power supply.
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 design allows for a compact, user-friendly smoking experience that can be easily held and used like a cigarette, with efficient power management maintaining the substrate at the desired temperature for an extended period.
Implementation Method 1
at least one heating element... to increase the temperature of the aerosol-forming substrate to an operating temperature
Implementation Method 2
a secondary power supply arranged to supply electrical power to the at least one heating element during a smoking mode, to maintain the temperature of the aerosol-forming substrate at substantially the operating temperature
Data Source
AI summary
An electrically heated smoking system includes a secondary unit capable of receiving a smoking article having an aerosol-forming substrate. The secondary unit includes at least one heating element and an interface for connection to a primary power supply for supplying electrical power to the at least one heating element during a pre-heating mode, to increase the temperature of the aerosol-forming substrate to an operating temperature. The secondary unit further includes a secondary power supply arranged to supply electrical power to the at least one heating element during a smoking mode, to maintain the temperature of the aerosol-forming substrate at substantially the operating temperature. The secondary unit also includes secondary circuitry. The electrically heated smoking system optionally includes a primary unit.