Calibration Apparatus Temperature Gradient Control
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Solution Overview
Problem
Existing calibration apparatuses for temperature probes face challenges in maintaining precise temperature control due to unwanted heat discharge near the opening and temperature gradients within the calibration chamber, limiting the accuracy of temperature calibration.
Innovation Solution
Incorporating at least two external temperature sensors disposed at dissimilar distances from the opening in the insert allows for precise measurement and control of temperature gradients, enabling improved temperature regulation by connecting these sensors to the electric control circuits that manage the heat energy elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature probes are arranged in passages to receive them, then the calibration chamber can be controlled, but heat is conveyed away from the calibration chamber near the opening causing temperature gradients and reduced accuracy
Solution Approach 1:
The patent introduces an intermediary substance (gas or liquid) that fills the calibration chamber and serves as a thermal medium. This intermediary allows heat to be distributed uniformly throughout the chamber, compensating for the heat discharge from temperature probes and eliminating temperature gradients near the opening, thereby maintaining measurement precision.
Solution Approach 2:
The patent changes the physical state or properties of the calibration chamber environment by introducing a thermal medium (gas or liquid) that can absorb and redistribute thermal energy. This parameter change enables the system to compensate for heat loss from temperature probes and maintain uniform temperature distribution, resolving the accuracy issue.
2Stability of the object's composition
If multiple heat energy elements are used to control temperature, then temperature gradients are reduced, but the temperature cannot be controlled precisely at the location of temperature probes due to heat discharge
Solution Approach 1:
The patent employs feedback control by using temperature sensors to monitor the temperature at multiple locations, including near the temperature probes. This feedback information is used to dynamically adjust the heat energy elements, ensuring that temperature deviations caused by probe heat discharge are compensated in real-time, maintaining precise temperature control at the probe location.
Solution Approach 2:
The patent changes the operational parameters of the heat energy elements based on real-time temperature measurements. By adjusting the power output or activation timing of heating elements in response to detected temperature variations, the system compensates for heat discharge from probes and maintains uniform temperature distribution throughout the calibration chamber.
3Ease of operation
If the opening is left open for insert introduction, then the apparatus is simple to operate, but heat is lost and temperature control is compromised
Solution Approach 1:
The patent introduces a flexible barrier or cover that can be opened or closed as needed. This thin film or shell structure allows easy access for insert introduction when opened, but provides thermal insulation when closed, preventing heat loss at the opening and maintaining temperature control during calibration operations.
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 solution enhances the accuracy of temperature calibration by effectively managing temperature gradients, ensuring that the temperature probe is maintained at the desired level, even under varying thermal loads, thereby improving the overall precision of the calibration process.
Implementation Method 1
The thermal energy from the heating elements is to propagate through the insert, where temperature probes are disposed in some of the passages
Implementation Method 2
the temperature probes comprise at least two external temperature sensors that are disposed at dissimilar distances from an opening in the insert. Thereby a temperature gradient immediately proximate to the temperature probe(s) disposed in the passages of the insert can be measured.
Implementation Method 3
The heat energy elements can be electric heating elements and/or cooling elements, and eg Peltier-elements can be used that can be switched by purely electric means between being heating and cooling elements.
Data Source
AI summary
A calibration apparatus for temperature probes comprising an elongate calibration chamber (1) with an opening (2) for receiving an insert (3) that has passages (4) for receiving temperature probes (6), and wherein the chamber (1) has several heat energy elements (-11) that are controlled by temperature probes (12-14). In the insert as such one or more external probes (7) are provided, each of which has one or more temperature sensors to the effect that at least two sensors (19, 20 or 15, 17) are provided at respective dissimilar distances to an end of the insert (3). The latter sensors are connected to electronic regulation (20, 23) and measurement units (21, 24) for regulating the supply of power to the heat energy elements.