Susceptor Temperature and Proximity Detection Through Induction Circuit SRF
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Solution Overview
Problem
Existing induction heating systems face challenges in accurately determining the temperature and proximity of susceptor elements, which are crucial for efficient and controlled heating processes, particularly in devices like vaporizers.
Innovation Solution
A system and method that utilize an induction heating circuit with an inductor element and a processor to determine the temperature and proximity of a susceptor element by analyzing the self-resonant frequency (SRF) response of the induction heating circuit, allowing for precise control of heating through adjustments in electrical energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional temperature sensing methods are used, then temperature measurement is simple, but measurement precision is insufficient for accurate susceptor temperature and proximity detection
Solution Approach 1:
The patent replaces traditional mechanical contact temperature sensors with a contactless induction heating system that measures temperature by detecting changes in the electromagnetic field. The control device determines susceptor temperature by monitoring the response of the induction heating circuit to the magnetic properties of the susceptor, eliminating the need for physical sensor contact while achieving accurate temperature measurement.
Solution Approach 2:
The system monitors changes in magnetic properties of the susceptor as temperature varies. By detecting how the susceptor's magnetic characteristics change with temperature through the induction heating circuit response, the system achieves precise temperature measurement without direct sensing, converting thermal parameter changes into electromagnetic signal variations.
2Reliability
If contactless temperature sensing is implemented, then reliability improves, but measurement precision deteriorates due to interference
Solution Approach 1:
The system employs feedback by continuously monitoring the response of the induction heating circuit to the susceptor's magnetic properties and adjusting the heating parameters accordingly. This closed-loop approach allows the control device to distinguish between signal changes caused by temperature variations and those caused by external interference, maintaining both reliability and precision in contactless measurement.
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 accurate temperature measurement and proximity detection of susceptor elements, enhancing the efficiency and control of heating processes in devices such as vaporizers.
Implementation Method 1
induction heating includes heating an object that is electrically conductive (e.g., a metal object) by electromagnetic induction. For example, induction heating includes heating the object based on heat generated in the object by eddy currents that flow in the object
Implementation Method 2
heat generated in the object by eddy currents that flow in the object
Implementation Method 3
The eddy currents may flow through the electrically conductive object and cause heat to be generated in the electrically conductive object based on Joule heating
Implementation Method 4
In some cases, the electrically conductive object includes a ferromagnetic material (e.g., iron) and heat is generated in the electrically conductive object based on magnetic hysteresis (e.g., magnetic hysteresis losses)
Implementation Method 5
A system and method that utilize an induction heating circuit with an inductor element and a processor to determine the temperature and proximity of a susceptor element by analyzing the self-resonant frequency (SRF) response of the induction heating circuit
Data Source
AI summary
Provided is a system for determining a characteristic of a susceptor element that may be associated with a vaporizer device. The system includes an inductor element and a control device. The control device is configured to detect a magnetic field associated with the inductor element and determine a characteristic of a susceptor element based on the magnetic field. A method and computer program product are also disclosed.