Thermometer Protective Tube Inner Part Thermal Management
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Solution Overview
Problem
Existing thermometers face measurement errors due to heat transfer issues between the process and the environment, leading to thermal drain and poor thermal response, which are not effectively addressed by current solutions that often require auxiliary energy or result in increased heat transfer.
Innovation Solution
A protective tube inner part is designed to arrange conductor elements on the side facing the protective tube, allowing better thermal contact and reducing heat transfer by positioning them between the protective tube inner part and the protective tube, with a thermally reflective coating and guiding elements to enhance thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a long installation depth is used to resist heat transfer, then measurement precision is improved, but response time deteriorates
Solution Approach 1:
The protective tube is divided into two distinct parts: an inner part extending into the process medium for direct thermal contact, and an outer protective tube providing thermal insulation. This segmentation allows the measurement tip to be positioned close to the process for fast response while the outer tube provides thermal isolation to maintain measurement accuracy.
2Loss of energy
If the protective tube volume is evacuated to improve thermal insulation, then heat transfer is reduced, but manufacturing complexity increases
Solution Approach 1:
The invention extracts the thermal insulation function from the evacuated protective tube volume and transfers it to the annular space between the inner and outer protective tubes. This eliminates the need for evacuation processes while maintaining effective thermal insulation through the air gap or vacuum between the two tube walls.
3Device complexity
If conductor elements are arranged inside the protective tube to simplify structure, then device complexity is reduced, but thermal contact is improved
Solution Approach 1:
The conductor elements are arranged in the annular space between the inner and outer protective tubes rather than inside the protective tube. This spatial reconfiguration in a different dimensional arrangement allows the conductors to be positioned close to the measurement tip for good thermal contact while maintaining structural simplicity through the annular configuration.
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 design improves thermal contact with the process, reduces heat transfer errors, and provides faster response times to temperature changes, while minimizing thermal drain and heat radiation into the environment, allowing for a more compact and efficient thermometer structure.
Implementation Method 1
a thermally reflective coating
Implementation Method 2
improves thermal contact with the process
Data Source
AI summary
A thermometer with protective tube inner part for insertion into a protective tube, especially a protective tube of a thermometer, wherein the protective tube inner part serves for arranging conductor elements, and wherein the protective tube inner part is matched to the shape of the inside of the protective tube in the region of a closed, protective tube end, and wherein the protective tube inner part serves to arrange the conductor elements on the side of the protective tube inner part facing the protective tube in the installed state.