Heater assembly, method for manufacturing heater assembly, and aerosol generating device including heater assembly
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Solution Overview
Problem
Existing aerosol generating devices face challenges in precisely controlling the temperature of cigarettes heated by magnetic fields due to the difficulty in measuring the temperature without additional sensors, leading to uneven aerosol generation and decreased smoking quality.
Innovation Solution
A heater assembly with a susceptor material that generates heat via an external magnetic field, integrated with a sensor pattern embedded in an insulating layer to measure temperature, allowing for precise temperature control without separate sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a coil and magnetic body are arranged in an aerosol generating device for induction heating, then heating capability is improved, but device complexity increases and temperature measurement becomes difficult
Solution Approach 1:
The patent combines the heating function and temperature measurement function into a single integrated heater assembly. The susceptor material serves both as the heating element (when exposed to magnetic field) and as the object whose temperature needs to be measured, eliminating the need for separate temperature sensors and reducing device complexity.
Solution Approach 2:
The susceptor material performs multiple functions: it generates heat through magnetic field exposure and simultaneously allows for temperature measurement. This multi-functionality reduces the number of components needed in the aerosol generating device while maintaining both heating and temperature monitoring capabilities.
2Device complexity
If no separate temperature sensor is used, then device complexity is reduced, but temperature measurement precision deteriorates
Solution Approach 1:
The susceptor material serves itself by being both the heated object and the measurement target. The temperature sensor measures the temperature of the susceptor material directly, which is the same component that generates heat, eliminating the need for separate temperature sensors while maintaining measurement accuracy.
3Device complexity
If temperature control is not precise, then device complexity is reduced, but aerosol generation quality deteriorates
Solution Approach 1:
The integrated temperature sensor provides real-time feedback on the susceptor material temperature, enabling the control system to adjust the magnetic field power to maintain optimal heating temperature. This feedback mechanism ensures precise temperature control for consistent aerosol generation quality.
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 heater assembly enables accurate temperature measurement and control of cigarettes, improving aerosol quality by ensuring consistent heating.
Implementation Method 1
a heating layer having at least a portion including a susceptor material generating heat by an external magnetic field
Implementation Method 2
an external magnetic field
Implementation Method 3
a sensor pattern embedded in the insulating layer and configured to measure a temperature of the heating layer
Data Source
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AI summary
A heater assembly includes a heating layer having at least a portion including a susceptor material generating heat by an external magnetic field and having a cylindrical shape therein in which an accommodation space configured to accommodate the cigarette is formed, an insulating layer surrounding at least a portion of an outer side surface of the heating layer, and a sensor pattern embedded in the insulating layer and configured to measure a temperature.