Thermometer Sensor Head Anisotropic Thermal Conductivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional thermometers with multiple measuring elements in a single sensor head often fail to maintain thermal equilibrium, leading to measurement inaccuracies due to asymmetric arrangements or dynamic thermal environments, especially when monitoring liquids with inhomogeneous temperature profiles.
Innovation Solution
Incorporating a unit with anisotropic thermal conductivity within the sensor head ensures that the temperature sensor and measuring element remain in thermal equilibrium by directing heat flow homogeneously, using materials like graphite or ferroelectric materials that undergo phase transformations, and securing the unit with a filler or securement element for optimal heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple measuring elements are arranged in a single sensor head, then measurement redundancy and calibration capability are improved, but thermal equilibrium between elements cannot be maintained, leading to measurement inaccuracies
Solution Approach 1:
The patent introduces a thermal conductivity element with spatially varying thermal conductivity properties. The element has higher thermal conductivity in regions where heat transfer is needed to maintain thermal equilibrium, and lower thermal conductivity in regions where temperature gradients should be preserved. This local differentiation of thermal properties ensures that multiple measuring elements reach thermal equilibrium without requiring symmetric arrangement, thereby maintaining both measurement reliability and precision
Solution Approach 2:
The patent changes the thermal conductivity parameter of the material used in the sensor head by incorporating a thermal conductivity element with temperature-dependent or position-dependent thermal conductivity. This parameter change allows dynamic adjustment of heat flow paths within the sensor head, enabling thermal equilibrium between measuring elements under varying operating conditions while maintaining measurement accuracy
2Device complexity
If measuring elements are arranged at different positions in the sensor head, then device complexity is reduced, but thermal equilibrium cannot be maintained in dynamic thermal environments
Solution Approach 1:
The patent introduces a thermal conductivity element as an intermediary component between the measuring elements and the sensor head environment. This element mediates heat transfer between differently positioned measuring elements, ensuring that despite their asymmetric arrangement, they reach thermal equilibrium. The intermediary element absorbs and redistributes heat flow, decoupling the positional arrangement from thermal equilibrium requirements and thereby reducing device complexity while maintaining reliability
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 ensures accurate temperature monitoring by maintaining thermal equilibrium between the temperature sensor and measuring element, reducing measurement errors and allowing for redundant temperature determination or calibration validation, even in dynamic thermal environments.
Implementation Method 1
at least partially arranged within the sensor head is a unit, which includes a material with anisotropic thermal conductivity
Implementation Method 2
the reference element is composed at least partially of a ferroelectric material, which experiences a phase transformation at at least one predetermined temperature
Data Source
AI summary
The present disclosure relates to an apparatus for determining and/or monitoring temperature of a liquid and to a method for manufacturing a corresponding apparatus. The apparatus comprises at least one temperature sensor and a measuring element, wherein at least the temperature sensor and the measuring element are arranged in a single sensor head. Further arranged at least partially within the sensor head is at least one unit comprising a material with anisotropic thermal conductivity.