Filling Body With Free-Standing Base For Pressure Sensors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure measurement devices face challenges with thermomechanical stresses due to different coefficients of thermal expansion between housing, carrier, and pressure sensor components, affecting measurement accuracy and precision, particularly when using free-floating filling bodies that require precise alignment and complex glazing processes.
Innovation Solution
A filling body with a recess for the pressure sensor and a freestanding base that carries the filling body, allowing for simple and cost-effective assembly, reducing thermomechanical stresses by decoupling the pressure sensor from the carrier through a smaller base surface and elastic bonding, and enabling precise alignment-free mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a free-floating filling body is used to reduce thermomechanical stresses, then measurement precision is improved, but device complexity increases due to precise alignment requirements and complex glazing processes
Solution Approach 1:
The patent merges the filling body with the carrier into a single integrated component. The filling body is no longer a separate free-floating element but is directly formed as part of the carrier structure, eliminating the need for separate mounting and alignment operations while maintaining the volume-reduction function.
Solution Approach 2:
The integrated filling body/carrier structure serves multiple functions simultaneously: it provides structural support as a carrier, reduces fluid volume as a filling body, and eliminates the need for separate mounting mechanisms. This multi-functionality reduces overall device complexity while maintaining measurement precision.
2Manufacturing precision
If glass bodies with glazed-in connecting leads are used, then manufacturing precision is improved, but ease of manufacture deteriorates due to complex glazing processes
Solution Approach 1:
The patent extracts the complex glazing process from the manufacturing sequence by integrating the filling body directly into the carrier. Connecting leads are no longer glazed into separate glass bodies but are directly connected to the integrated structure, eliminating the complex glazing step while maintaining connection integrity.
Solution Approach 2:
The integrated structure replicates the functional benefits of precision glass body mounting through a simplified carrier-integrated design. The carrier itself becomes the mounting structure, copying the precision-alignment function without requiring complex glazing processes.
3Measurement precision
If the filling body base has a smaller surface area than the recess, then thermomechanical stresses are reduced through decoupling, but volume of the filling body increases
Solution Approach 1:
The integrated filling body/carrier structure segments the stress transmission path by creating a distinct interface between the filling body portion and the carrier portion. The filling body base with smaller surface area acts as a stress-isolation element, separating thermomechanical stresses while the integrated structure optimizes overall volume efficiency.
Solution Approach 2:
The patent applies local quality by creating a specific geometric relationship where the filling body base has a smaller surface area than the recess it sits in. This localized geometric feature is strategically designed to reduce stress transmission at the critical interface while maintaining overall structural integrity and volume efficiency.
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 solution provides a cost-effective, stress-reduced pressure measurement module with improved measurement accuracy and precision by decoupling thermomechanical stresses and allowing for precise alignment-free assembly, while maintaining the functionality of both a filling body and a sensor carrier.
Implementation Method 1
allowing for simple and cost-effective assembly, reducing thermomechanical stresses by decoupling the pressure sensor from the carrier through a smaller base surface and elastic bonding
Data Source
AI summary
The present disclosure relates to a filling body for reducing a volume of a pressure measurement chamber, which is to be filled with a pressure transmitting fluid, surrounding a pressure sensor. The filling body includes a recess for receiving the pressure sensor and has a free-standing base projecting into the recess on which the pressure sensor can be mounted. A filling body base supporting the filling body is provided on a side of the filling body facing away from the recess. The filling body can be mounted in an application location in such a way that the filling body base supports the otherwise free-standing filling body. The filling body base has a base surface that is smaller than a base surface of a filling body region that is adjacent to the filling body base and surrounding the recess.