Vacuum Pump Cooling Channels for Vibration Sensor Accuracy
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Solution Overview
Problem
Existing vacuum pump monitoring devices face challenges in accurately detecting vibrations near high-temperature vibration sources due to temperature-related degradation in sensing accuracy and attenuated vibration transmission, necessitating a cooling solution to maintain effective operation.
Innovation Solution
The implementation of a housing structure with dedicated coolant channels to cool monitoring devices, ensuring they operate within an optimal temperature range for accurate vibration detection, while also cooling the vacuum pump components to prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the monitoring device is attached near the bearings (vibration sources), then vibration detection accuracy is improved, but temperature rise deteriorates sensing accuracy
Solution Approach 1:
The housing is designed with localized cooling channels that specifically target the monitoring device area. The coolant channels are positioned to overlap the monitoring device in plan view, creating a localized cooling zone that maintains optimal temperature for the sensor while allowing other parts of the housing to operate at higher temperatures near the vibration sources.
2Temperature
If the monitoring device is set far from the vibration sources, then temperature of the monitoring device decreases, but vibration transmission is attenuated
Solution Approach 1:
The housing acts as an intermediary structure that simultaneously transmits vibration from the bearings to the monitoring device while conducting heat away from the monitoring device through the coolant channels. This allows the monitoring device to be positioned at an optimal distance that balances vibration transmission and temperature control.
3Ease of operation
If the monitoring device operates in high temperature environment, then attachment near vibration sources is feasible, but sensing accuracy deteriorates
Solution Approach 1:
The cooling channels are pre-configured in the housing structure before the monitoring device is installed. This preliminary arrangement of coolant flow paths ensures that when the monitoring device is attached near the vibration sources, it is immediately subjected to active cooling, preventing temperature-induced accuracy degradation from the outset.
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 solution effectively maintains the monitoring device's temperature within a range that allows for accurate vibration detection and prevents overheating of the vacuum pump, enhancing predictive maintenance capabilities.
Implementation Method 1
a housing structure with dedicated coolant channels to cool monitoring devices
Data Source
AI summary
A vacuum pump includes a pump rotor, a housing configured to house the pump rotor, and a monitoring device attached to the housing and configured to detect vibration of the housing. The housing includes first channels for causing a coolant to flow to a portion opposed to the monitoring device.