Induction Heating Assembly Temperature Sensor Placement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Induction heating vapor generating devices face challenges in accurately controlling and monitoring temperatures, leading to inefficient power usage and potential component damage.
Innovation Solution
An induction heating assembly with an induction coil and a temperature sensor positioned at the axial center of the coil, allowing for accurate temperature monitoring while minimizing electromagnetic field interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature sensor is located at the axial centre of the induction coil, then the monitored temperature is more representative of the heating temperature, but the electromagnetic field noise increases reducing measurement precision
Solution Approach 1:
The patent introduces a non-magnetic, thermally conductive material as an intermediary between the induction coil and the temperature sensor. This mediator transfers heat from the heating zone to the sensor while blocking electromagnetic field interference, thus resolving the contradiction between measurement representativeness and noise reduction
Solution Approach 2:
The temperature sensor is extracted from the central heating zone and positioned at a location where electromagnetic field noise is lower, while still maintaining thermal coupling to monitor the heating temperature indirectly. This separates the sensor from the harmful EM field while preserving temperature monitoring capability
2Object-affected harmful factors
If the temperature sensor is separated from the heat source, then electromagnetic field noise is reduced improving precision, but the monitored temperature becomes less representative reducing accuracy
Solution Approach 1:
A thermally conductive non-magnetic intermediary material is used to bridge the gap between the heat source and the separated temperature sensor. This mediator ensures accurate heat transfer for representative temperature monitoring while maintaining the physical separation needed to reduce electromagnetic noise
Solution Approach 2:
The patent transitions from direct spatial proximity for temperature monitoring to thermal field coupling through a mediator. The sensor monitors temperature indirectly through thermal conduction in another dimension (heat transfer path) rather than direct contact, allowing separation from EM noise while maintaining representativeness
3Productivity
If induction heating is used for vapour generation, then controlled heating is achieved, but unsuitable temperatures may be produced unknowingly wasting power and risking component damage
Solution Approach 1:
The patent implements a feedback control system where the temperature sensor continuously monitors the heating temperature and provides feedback to the control circuit. The control circuit adjusts the induction coil power accordingly to maintain suitable temperatures, preventing both underheating (power waste) and overheating (component damage)
Solution Approach 2:
The system performs preliminary temperature monitoring and adjustment before reaching dangerous temperature levels. The feedback mechanism detects temperature trends early and takes corrective action in advance, preventing the occurrence of unsuitable temperatures that would waste power or damage components
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 solution achieves improved accuracy and precision in temperature monitoring, ensuring optimal heating performance and reducing the risk of component damage.
Implementation Method 1
Electrical energy is provided to the inductor when a user activates the device which in turn creates an electromagnetic (EM) field. The susceptor couples with the field and generates heat
Implementation Method 2
an induction coil (hereinafter also referred to as an inductor and induction heating device) is provided with the device and a susceptor is provided with the vapour generation substance
Implementation Method 3
The susceptor couples with the field and generates heat which is transferred to the substance and vapour is created as the substance is heated
Implementation Method 4
a temperature sensor located against a side of the heating compartment on the central longitudinal axis of the induction coil at an end of the heating compartment, wherein the induction coil is arranged to heat, in use, the susceptor, and the temperature sensor is arrange to monitor, in use, a temperature related to heat generated from the susceptor
Data Source
AI summary
An induction heating assembly for a vapour generating device includes an induction coil, radially inward of which a heating compartment is defined for receiving, in use, a body including a vaporisable substance and an induction heatable susceptor; and a temperature sensor located against a side of the heating compartment on the central longitudinal axis of the induction coil at an end of the heating compartment, wherein the induction coil is arranged to heat, in use, the susceptor, and the temperature sensor is arrange to monitor, in use, a temperature related to heat generated from the susceptor. There is also provided an induction heatable cartridge for use with the induction heating assembly. The cartridge includes a solid vaporisable substance; and an induction heatable susceptor held by the vaporisable substance, the susceptor being planar and having an outwardly facing edge and an inwardly facing edge.