Integrated Infrared Emitter Temperature Sensing for Vapor Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing temperature monitoring systems in infrared emitters for heating tobacco products suffer from errors and lag, leading to inaccurate smoke emission control during inhalation.
Innovation Solution
A vapor generation device with an infrared emitter that integrates a temperature sensing material with a positive or negative resistance-temperature coefficient, allowing for accurate temperature determination through resistance value measurement, enhancing the stability and accuracy of temperature monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature sensor is used to indirectly measure the temperature of the heated tobacco product through the infrared emitter, then the temperature monitoring function is achieved, but measurement errors and lag occur affecting accuracy
Solution Approach 1:
The patent integrates the temperature sensing material directly onto the infrared emitter, merging the heating function and temperature sensing function into a single integrated component. This eliminates the indirect measurement approach and provides direct temperature feedback from the emitter surface, resolving the measurement accuracy and reliability issues.
Solution Approach 2:
The temperature sensing material acts as an intermediary between the infrared emitter and the control system. It directly senses the temperature of the emitter and converts it into electrical signals for control, eliminating the lag and error associated with indirect measurement through separate temperature sensors.
2Measurement precision
If the temperature sensing material is formed directly on the infrared emitter, then measurement accuracy is improved, but the complexity of manufacturing increases
Solution Approach 1:
The patent utilizes the temperature-dependent resistance parameter of the sensing material to create the temperature sensing function. By selecting materials with appropriate resistance-temperature characteristics, the system achieves accurate temperature measurement while maintaining compatibility with existing infrared emitter manufacturing processes.
Solution Approach 2:
The infrared emitter is constructed as a composite structure combining the infrared emission layer with the temperature sensing material layer. This composite design enables dual functionality (heating and sensing) while using materials and processes that can be integrated into existing manufacturing workflows.
3Measurement precision
If the temperature sensing material is insulated from the infrared emission material, then measurement accuracy is maintained, but the device structure becomes more complex
Solution Approach 1:
The patent employs a thin insulating film to electrically isolate the temperature sensing material from the infrared emission material. This thin film provides sufficient electrical insulation while maintaining thermal coupling for accurate temperature sensing, and its flexibility allows it to conform to the emitter structure without adding significant complexity.
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 integrated temperature sensing material provides a stable and accurate temperature monitoring system, ensuring precise control over the heating process and aerosol generation.
Implementation Method 1
the infrared emission material is configured to radiate an infrared ray to the inhalable material received in the cavity, so as to heat the inhalable material
Implementation Method 2
the temperature sensing material has a positive or negative resistance-temperature coefficient; and a circuit, configured to obtain a resistance value of the temperature sensing material and determine a temperature of the infrared emitter from the resistance value
Data Source
AI summary
A vapor generation device and an infrared emitter is provided. The vapor generation device includes a housing, where the housing is internally provided with: a cavity, configured to receive an inhalable material; an infrared emitter, including an infrared emission material, where the infrared emission material is configured to heat the inhalable material by radiating an infrared ray; a temperature sensing material, formed on the infrared emitter and insulated from the infrared emission material, where the temperature sensing material has a positive or negative resistance-temperature coefficient; and a circuit, configured to obtain a resistance value of the temperature sensing material and determine a temperature of the infrared emitter from the resistance value. The temperature of the infrared emitter can be determined by printing or depositing a temperature sensing material with a temperature sensor function on the infrared emitter itself and detecting the resistance of the temperature sensing material.