Infrared Heating Receiver Shielding Sensor from Radiation
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Solution Overview
Problem
Conventional temperature measurement techniques face challenges in accurately measuring the temperature of objects heated by electromagnetic radiant energy, particularly due to issues with emissivity, surface roughness, and shape of materials, as well as structural integrity and aesthetics concerns when inserting thermocouples, and chaotic thermal environments in industrial processes.
Innovation Solution
A system and method that uses a receiver with temperature sensors to shield from infrared radiation and convective currents, allowing for accurate temperature measurement and control, and enables differential infrared energy delivery to various parts of a single object for tailored heat treatment, employing a physical inverse of the part's surface to block radiation and convective paths, and combining contact and non-contact sensors for precise temperature monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If thermocouples are inserted into the part to measure temperature, then temperature measurement is achieved, but structural integrity and aesthetics of the object are compromised
Solution Approach 1:
A receiver made of thermally conductive material serves as an intermediary between the part and the temperature sensor. The receiver contacts the part's surface and conducts heat to the sensor, eliminating the need to insert the sensor into the part itself. This preserves structural integrity while enabling temperature measurement through thermal conduction from the part's surface or subsurface regions.
2Measurement precision
If thermocouples are inserted into the part to measure temperature, then temperature measurement is achieved, but the aesthetics of the object are compromised
Solution Approach 1:
The receiver acts as an external intermediary device that contacts the part's surface without requiring holes or modifications to the part's geometry. Temperature sensors are housed within the receiver, keeping them hidden from view while maintaining aesthetic appearance. The receiver transfers thermal energy from the part to the sensors through conduction, enabling measurement without compromising the part's visual appearance.
3Measurement precision
If conventional temperature measurement is used in a chaotic thermal environment with radiant emitters, then temperature measurement is attempted, but accurate measurements are difficult to obtain
Solution Approach 1:
The temperature sensor is extracted from the direct thermal environment by housing it within the receiver. The receiver shields the sensor from chaotic radiant heating while maintaining thermal contact with the part through conduction. This separation allows the sensor to measure temperature without being directly exposed to the harsh radiant thermal field, improving measurement accuracy.
Solution Approach 2:
The receiver serves as a thermal intermediary that filters and conditions the thermal energy reaching the sensor. It conducts heat from the part to the sensor while blocking direct radiant exposure, creating a more stable measurement environment. The receiver's thermally conductive material allows selective thermal coupling that isolates the sensor from harmful radiant effects.
4Use of energy by moving object
If infrared emitters are used to heat the part, then heating efficiency is improved, but temperature measurement becomes more challenging due to radiant energy interference
Solution Approach 1:
The receiver acts as a selective thermal intermediary that allows efficient infrared heating of the part while protecting the temperature sensor from direct radiant exposure. The receiver's thermally conductive material conducts heat from the irradiated part surface to the sensor, enabling temperature measurement without direct sensor exposure to the infrared emitters, thus maintaining both heating efficiency and measurement accuracy.
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 approach provides accurate and controlled temperature measurement and heat treatment, minimizing interference from radiant and convective thermal energy, enabling precise heat application to different areas of a part, thus overcoming previous measurement challenges and enhancing heat treatment processes.
Implementation Method 1
The receiver is configured to shield a temperature sensor of the receiver from infrared energy radiated from the infrared emitters
Implementation Method 2
The receiver is configured to shield a temperature sensor of the receiver from infrared energy radiated from the infrared emitters and convective currents within the chamber
Implementation Method 3
an oven chamber with a plurality of infrared emitters configured to direct infrared energy towards the part
Implementation Method 4
a receiver that interfaces with the part. The receiver may isolate a temperature sensor that is configured to measure the temperature of the part
Data Source
AI summary
A system for heat treating a part includes an oven chamber, a first infrared (IR) emitter configured to deliver a first amount of IR energy to a first region of the part, a second IR emitter configured to deliver a second amount of IR energy different from the first amount of energy to a second region of the part, and a receiver with an outer surface configured to contact a second surface of the part and shield the second surface of the part from infrared radiation. The part can be heat treated by delivering different amounts of IR energy to the first and second regions of the part. The system can be used to heat treat different thicknesses of a part without overheating a thinner region, or to apply different heat treatments to the different regions.