Integrated Pressure Sensor Module for Ventilation Fan Mounting
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Solution Overview
Problem
The existing methods for attaching pressure sensors in ventilation systems require significant effort and are prone to issues such as bending or detachment of pressure tubes, especially when using miniature sensors, leading to installation difficulties.
Innovation Solution
A sensor module with an interface that connects directly to motor electronics, integrated into a cable gland, allowing for simplified attachment and integration into existing housing components, using established standards for signal transmission and power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pressure sensors are attached using traditional pressure tubes and connectors, then the sensors can be installed in ventilation systems, but the installation effort is high and the system is prone to bending or detachment issues
Solution Approach 1:
The patent combines the pressure sensor, pressure tube connectors, and cable gland into a single integrated sensor module. This merging eliminates the need for separate attachment operations and reduces the number of connection points where failures could occur, directly addressing both the high installation effort and reliability issues of traditional separate components
Solution Approach 2:
The sensor module serves multiple functions: it contains the pressure sensor for measurement, integrated cable gland for electrical connections, and built-in pressure tube connectors for pressure measurements. This multi-functionality in a single unit simplifies installation while maintaining reliable connections for both electrical and pressure measurements
2Volume of moving object
If miniature pressure sensors are used, then the sensor size is reduced, but the pressure tubes become more difficult to mount and channel
Solution Approach 1:
The patent integrates the pressure tube connectors directly into the sensor module housing, eliminating the need for separate mounting operations. The connectors are positioned to receive pressure tubes directly at the sensor location, which simplifies the channeling process especially for miniature sensors where manual manipulation is difficult
Solution Approach 2:
The pressure tube connectors are pre-positioned and prepared within the sensor module before installation. This preliminary arrangement of connectors in the correct positions eliminates the need for complex alignment and mounting operations during installation, particularly important for miniature sensors
3Measurement precision
If pressure tubes are channelled from motor interior to outside, then pressure measurements can be taken, but the tubes can bend or come loose
Solution Approach 1:
The patent integrates the cable gland and pressure tube connectors into a single unified sensor module structure. This integration provides a stable, fixed mounting structure for both electrical cables and pressure tubes, eliminating the bending and loosening issues that occur when components are separately mounted
Solution Approach 2:
The sensor module provides a pre-formed, stable mounting structure that protects and secures the pressure tubes and electrical cables in their correct positions. This beforehand structural support prevents bending and detachment during operation and vibration
Data Source
AI summary
Sensor module 1 for differential pressure measurement in ventilation systems, in particular fans, by means of pressure determination, mass-flow determination or volume-flow determination, comprising: a processing unit 2, at least one pressure sensor 3, wherein the pressure sensor 3 is designed in such a way that it delivers to the processing unit 2 a signal corresponding to a local pressure 4 or volume flow 4 or mass flow 4, wherein the processing unit 2 comprises at least one interface 5 or is designed as an interface 5.