Induction Heating Coil Venting for Stable Vapour Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Induction heating vapor generating devices often produce unsuitable temperatures, leading to inefficiency and potential damage, and existing temperature monitoring solutions are unreliable and power-intensive.
Innovation Solution
An induction heating assembly with an air vent around the induction coil to allow air flow, which cools the coil and reduces the energy needed to heat the vaporizable substance, while maintaining efficient energy transfer and preventing the outer body from overheating, using a susceptor material like aluminum or nickel to generate heat through eddy currents and magnetic hysteresis losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If induction heating is used to generate vapour, then controlled heating and vapour generation is achieved, but unsuitable temperatures are produced leading to power waste and potential damage
Solution Approach 1:
The patent implements temperature monitoring with a temperature sensor that provides feedback to the control circuit. The control circuit adjusts the induction heating power based on the monitored temperature, preventing overheating and power waste while maintaining controlled vapour generation. This closed-loop feedback system resolves the contradiction by enabling both controlled heating and energy efficiency.
Solution Approach 2:
The patent changes the operating parameters of the induction heating system by dynamically adjusting the power level based on temperature feedback. The control circuit modifies heating parameters (power, duration) according to the actual temperature conditions, achieving both controlled vapour generation and reduced energy waste through parameter optimization.
2Reliability
If temperature monitoring is added to control heating, then temperature control is improved, but component count and power consumption increase
Solution Approach 1:
The temperature sensor serves multiple functions: it monitors temperature for control purposes, provides safety protection against overheating, and enables optimization of power consumption. By making the temperature monitoring system multi-functional, the patent achieves improved reliability without proportionally increasing device complexity, as a single sensor system accomplishes multiple protective and control functions.
Solution Approach 2:
The control circuit automatically adjusts heating parameters based on temperature feedback without requiring additional complex control systems. The system self-regulates by using the temperature sensor data to modulate the induction heating power, achieving reliable temperature control through self-service operation that minimizes additional complexity.
3Temperature
If air flow is allowed around the induction coil, then cooling efficiency is improved, but heat transfer to the vaporizable substance may be reduced
Solution Approach 1:
The patent segments the air flow paths into distinct zones: one zone for cooling the induction coil (air flow around the coil) and another zone for heating the vaporizable substance (air flow through the heating compartment). This segmentation allows both cooling and heating functions to occur simultaneously without significant interference, resolving the contradiction between coil cooling and heat transfer efficiency.
Solution Approach 2:
The patent uses air as an intermediary medium that serves dual purposes: it cools the induction coil by flowing around it and simultaneously carries heat to the vaporizable substance when directed through the heating compartment. The air acts as a heat transfer intermediary that enables both cooling and heating functions, resolving the apparent contradiction between these two thermal management requirements.
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 configuration enhances the efficiency and stability of the heating process, reduces power usage, and protects users from excessive heat, while ensuring effective heat transfer within the heating compartment without increasing the distance between the induction coil and susceptor.
Implementation Method 1
the susceptor may generate heat due to eddy currents and magnetic hysteresis losses resulting in a conversion of energy from electromagnetic to heat
Implementation Method 2
the susceptor may generate heat due to eddy currents and magnetic hysteresis losses resulting in a conversion of energy from electromagnetic to heat
Implementation Method 3
Electrical energy is provided to the inductor when a user activates the device which in turn creates an electromagnetic (EM) field
Implementation Method 4
allowing air to flow around the induction coil and to a longitudinal end of the heating compartment allows for heat transfer to the air before it enters the heating compartment. This cools the induction coil
Implementation Method 5
the air passing into the heating compartment also heats the vaporisable substance (or at least reduces the cooling effect it has)
Data Source
AI summary
An induction heating assembly for a vapour generating device, includes an outer body; an induction coil arranged inward of the outer body; a heating compartment defined inward of the induction coil and arranged to receive, in use, a body comprising a vaporisable substance and an induction heatable susceptor; wherein the separation between the outer body and the induction coil defines an air vent arranged to allow air flow around the induction coil and to the heating compartment.