Compact Pressure Temperature Sensor Axial Alignment
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Solution Overview
Problem
Existing pressure and temperature measuring devices face challenges in compactness and space constraints, particularly in vehicle and on-board systems where the distance between hexagonal casing faces is often too large, leading to installation difficulties in tight spaces.
Innovation Solution
A pressure and temperature measuring device with a prismatic or cylindrical geometry where the pressure-sensitive element and electronic circuit board are aligned along a longitudinal axis, reducing radial dimensions, and incorporating a sleeve for protection and ease of assembly, along with elastic contact elements and a sealing gasket for secure and compact installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the pressure-sensitive element is arranged perpendicular to the major axis of the sensor, then the minimum circumscribed circle for hexagonal faces is determined, but the distance between hexagonal casing faces becomes too large (24-27mm) for compact vehicle installations
Solution Approach 1:
The patent changes the spatial arrangement by moving the pressure-sensitive element from a perpendicular orientation to an axial alignment along the longitudinal axis. This dimensional reconfiguration allows the hexagonal casing faces to be positioned closer together, reducing the radial dimension from 24-27mm to approximately 21mm while maintaining functional integrity.
Solution Approach 2:
The patent employs an asymmetric internal layout where the pressure-sensitive element, electronic circuit board, and other components are arranged non-uniformly along the longitudinal axis. This asymmetric configuration optimizes space utilization and enables the reduced face distance requirement while maintaining all necessary functional clearances.
2Volume of moving object
If components are arranged in a compact configuration along the longitudinal axis, then the radial dimension is reduced to 21mm, but the assembly complexity increases due to precise alignment requirements
Solution Approach 1:
The patent divides the internal space into distinct functional zones along the longitudinal axis: a first region for the pressure-sensitive element, a second region for the electronic circuit board, and a third region for additional components. This segmentation allows each component to be positioned and assembled independently with standardized interfaces, reducing overall assembly complexity despite the compact configuration.
Solution Approach 2:
The patent introduces intermediary structural elements such as mounting plates, positioning fixtures, and modular sub-assemblies that facilitate precise alignment between components. These intermediaries act as mediators that absorb alignment tolerances and simplify the assembly process while maintaining the compact radial dimension.
3Reliability
If a threaded coupling is used for connection to tank or pipe, then secure fluid connection is achieved, but the installation space requirements increase
Solution Approach 1:
The patent repositions the threaded coupling from a prominent external feature to an integrated component that utilizes the existing longitudinal axis of the device. By aligning the threading direction with the device's primary axis and utilizing the internal cavity space, the coupling achieves secure fluid connection without adding significant radial or lateral dimensions, thus maintaining compact installation footprints.
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 compact, secure, and easy-to-assemble device capable of measuring pressure and temperature, addressing space constraints and ensuring reliable operation in limited spaces.
Implementation Method 1
a pressure-sensitive element (2) arranged in said base (1)
Implementation Method 2
The shaft (3'') comprises a temperature sensor embedded in the electronic circuit board (3)
Data Source
AI summary
A pressure and temperature measuring device with improved compact design and installation having a base (1) with an elongated geometry, arranged according to the longitudinal axis (A) inside the casing (16) and having a partition (5), a back (18), a platform (19) and a plinth (10); the partition (5) has an inner plane (5′) oriented towards the back (18) and parallel to the longitudinal axis (A) and an outer plane (5″) that forms an acute angle with the inner plane (5′), the back (18), the platform (19) and the inner plane (5′) of the partition (5) define a slot (17) and receives the electronic circuit board (3), the outer plane (5″) of the partition (5) defines a support surface to support together with the plinth (10) for the pressure-sensitive element (2), the outer surface (5″) of the partition (5) having an opening (7) that gives way to the conduit (8).