Infrared Heating Control for Puff-Responsive Heat-Not-Burn Devices
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Solution Overview
Problem
In heat-not-burn devices, users face inconsistent taste due to continuous high-temperature heating, leading to aerosol-forming substrate loss, burning smells, and inefficient energy consumption, as well as the inability to puff at any time without wasting the substrate.
Innovation Solution
A heating control method for heat-not-burn devices that adjusts the heating element's temperature based on user puffing actions, using infrared radiation to heat the aerosol-forming substrate, with temperature settings varying between preheat, puffing, and post-puffing phases to optimize substrate usage and taste consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heating element continuously heats the aerosol-forming substrate at high temperature, then aerosols are continuously generated, but the aerosol-forming substrate is lost and taste becomes inconsistent
Solution Approach 1:
The heating element operates in periodic cycles: heating to high temperature (300-400°C) during puffing actions, then reducing to low temperature (100-300°C) during breaks. This periodic heating pattern ensures aerosols are generated only when needed while preventing substrate loss during non-puffing periods.
Solution Approach 2:
The heating element's temperature is dynamically adjusted based on real-time detection of puffing actions. The control system increases temperature when puffing is detected and decreases it when puffing stops, making the heating process adaptive to user behavior rather than continuous.
2Reliability
If the heating element continuously heats at high temperature, then aerosols are maintained, but burning smell occurs and taste becomes inconsistent
Solution Approach 1:
By implementing periodic heating cycles rather than continuous heating, the system maintains aerosol consistency during puffing while avoiding burning smells during break periods when high-temperature heating would cause degradation of the substrate.
Solution Approach 2:
The control system uses feedback from puffing detection to regulate heating element temperature. When puffing is detected, temperature increases to maintain aerosol quality; when puffing stops, temperature decreases to prevent burning and maintain taste consistency.
3Productivity
If the heating element continuously heats at high temperature, then aerosols are continuously available, but energy consumption increases
Solution Approach 1:
The heating element operates periodically rather than continuously, consuming high energy only during brief puffing actions (300-400°C) and low energy during break periods (100-300°C). This dramatically reduces overall energy consumption while maintaining aerosol availability when needed.
Solution Approach 2:
The system dynamically adjusts power consumption based on actual usage patterns, increasing power during puffing actions and reducing it during breaks. This makes energy consumption proportional to actual aerosol generation needs rather than constant.
4Ease of operation
If the heating element maintains high temperature during breaks, then aerosol generation is ready, but most of the aerosol-forming substrate is lost
Solution Approach 1:
The system uses periodic heating where low-temperature maintenance (100-300°C) during breaks preserves substrate while still allowing quick transition to high-temperature aerosol generation when puffing is detected, eliminating the need for continuous high-temperature heating.
Solution Approach 2:
The heating element performs preliminary low-temperature heating during breaks to prepare the substrate without causing degradation. When puffing is detected, the system quickly transitions to high-temperature aerosol generation, achieving immediate readiness without substrate loss.
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
Enables users to puff at any time without wasting the substrate, reduces aerosol-forming substrate loss, and ensures consistent taste by controlling heating element temperatures dynamically, improving user experience and energy efficiency.
Implementation Method 1
the heating element heats the aerosol-forming substrate through infrared radiation, the heating element includes a heating body and a tube element, the heating body includes a heating substrate and an infrared radiation layer disposed on an outer surface of the heating substrate, the heating substrate is configured to be powered on for heating and excite the infrared radiation layer to radiate infrared light
Data Source
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AI summary
The present invention discloses a heating element, a heat-not-burn device, and a heating control method therefor. The heating control method for a heat-not-burn device includes: controlling the heating element to increase from an initial temperature to a first temperature when heating is started, and maintaining the first temperature; controlling the heating element to increase from a current temperature to a second temperature when detecting a puffing action, where the second temperature is greater than the first temperature; and controlling the heating element to decrease from a current temperature to a third temperature when detecting that the puffing action ends, where the third temperature is less than the second temperature.