Angled Pressure Measuring Cell Housing Design
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Solution Overview
Problem
Conventional pressure measuring devices face issues with increased size due to the need for preprocessing circuits and connection lines, leading to temperature-dependent measurement errors and hydrostatic errors, which affect accuracy.
Innovation Solution
The pressure measuring device features a pressure measuring cell with a cylindrical housing where the cylinder axis forms an angle of at least 80° with the housing axis, incorporating an isolating diaphragm and a capacitive transducer with electrodes on both the membrane and platform, along with an electronic circuit for signal processing, and a support body to minimize space requirements while maintaining accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the preprocessing circuit and connection lines are arranged in a conventional coaxial configuration, then the device can process signals, but the housing size must be sufficiently large to accommodate the required space
Solution Approach 1:
The patent applies dimensional change by orienting the pressure measuring cell at an angle of at least 80 degrees relative to the housing axis, transforming the conventional coaxial arrangement into an angular configuration. This spatial reorientation allows the preprocessing circuit and connection lines to be arranged more efficiently within the housing, reducing the required housing volume while maintaining signal processing capabilities.
2Volume of stationary object
If the pressure measuring cell is sufficiently small to fit in a given housing, then the housing size can be reduced, but the separation between the pressure measuring cell and the body of the pressure transfer means increases
Solution Approach 1:
The angular orientation of at least 80 degrees between the pressure measuring cell and housing axis creates optimized spatial relationships that reduce separation distances. This dimensional change allows the pressure measuring cell to be positioned closer to the pressure transfer means body, minimizing the hydraulic path length and improving measurement accuracy while maintaining compact housing dimensions.
Solution Approach 2:
The patent changes the geometric parameter of the pressure measuring cell orientation from conventional coaxial (0 degrees) to an angular configuration (at least 80 degrees). This parameter change optimizes the spatial arrangement, reducing both the housing volume required and the separation distance to the pressure transfer means, thereby improving measurement accuracy.
3Volume of stationary object
If the separation between the pressure measuring cell and the pressure transfer means body is increased, then the device can be compact, but it contributes to temperature dependent measurement errors and hydrostatic measurement errors
Solution Approach 1:
The angular orientation of at least 80 degrees optimizes the spatial arrangement to minimize the hydraulic path length and separation distance between components. This dimensional change ensures that even in compact housings, the pressure transfer path remains short, reducing temperature-dependent and hydrostatic measurement errors while maintaining compact dimensions.
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 configuration reduces the size of the housing while minimizing temperature and hydrostatic errors, enhancing the accuracy and reliability of pressure measurements.
Implementation Method 1
the pressure measuring cell has an electrical transducer for transducing a pressure dependent deflection of the measuring membrane into at least one pressure dependent, electrical, primary signal
Data Source
AI summary
A pressure measuring device, comprising: a pressure measuring cell having a measuring membrane, at least one platform and a pressure chamber formed therebetween. An electrical transducer for transducing a deflection of the measuring membrane into a pressure dependent, primary signal; a cylindrical housing having a measuring cell chamber, in which the pressure measuring cell is arranged, and an end face pressure receipt opening in communication with the pressure duct; and an electronic circuit in the housing for operating the electrical transducer, and for processing the primary signal, and for outputting a measurement signal. The cylinder axis of the pressure measuring cell forms with the cylinder axis of the housing an angle, which amounts to not less than 80°, and which is especially preferably a right angle.