Variable-Speed Vacuum Pump for Oil Viscosity Diagnostics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vacuum pumps for food preservation suffer from issues such as oil deterioration due to water and biological material accumulation, affecting viscosity, dielectric capacity, thermal conductivity, and seal integrity, while lacking sensorless diagnostics and customizable operation.
Innovation Solution
A vacuum pump equipped with a permanent-magnet motor with variable rotation rate and an electronic power and control board to optimize torque, monitor oil viscosity, and enable sensorless diagnostics, offering customizable cycles and reduced size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional asynchronous motor is used in the vacuum pump, then the pump can operate, but it consumes excessive power and generates high breakaway torque demand
Solution Approach 1:
The patent applies parameter changes by transitioning from a conventional asynchronous motor to a permanent-magnet motor with variable rotation rate. This allows dynamic adjustment of motor parameters (rotation rate, torque output) to match the actual operational needs of the vacuum pump, reducing both power consumption and breakaway torque demand while maintaining effective pumping performance.
2Productivity
If the pump operates rapidly to achieve quick vacuum, then productivity increases, but water and biological material accumulate faster in the pump
Solution Approach 1:
The patent implements feedback mechanisms through sensors that monitor the pump's operational parameters and the accumulation of water and biological materials. This feedback enables the control system to adjust the pump's operation dynamically, balancing rapid vacuum generation with maintenance of pump reliability by detecting when intervention is needed.
Solution Approach 2:
The patent applies preliminary action through proactive monitoring and maintenance protocols. Sensors detect early signs of contamination accumulation, allowing the system to take preventive measures (such as adjusting operation parameters or scheduling maintenance) before the accumulation significantly impacts pump reliability and lifespan.
3Duration of action of moving object
If the lubrication oil is used continuously without replacement, then operational time increases, but the oil's viscosity and thermal conductivity deteriorate
Solution Approach 1:
The patent uses feedback from sensors to monitor the operational conditions and detect changes in oil performance. This enables the system to track the degradation of oil viscosity and thermal conductivity over time, providing data for determining when oil replacement is necessary to maintain optimal pump operation.
Solution Approach 2:
The patent implements a self-service approach where the pump system automatically monitors its own operational status and oil condition through integrated sensors. This self-monitoring capability allows the system to manage its own maintenance needs, tracking oil degradation and alerting operators when intervention is required, thereby extending operational time while maintaining oil stability.
4Measurement precision
If sensors are added to monitor pump conditions, then diagnostic capability improves, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by designing sensors that perform multiple functions simultaneously. For example, sensors monitor not only oil conditions but also operational parameters, temperature, and potential failures, providing comprehensive diagnostic capability with a minimal sensor set. This multi-functionality reduces the overall number of sensors needed while maintaining high measurement precision.
Solution Approach 2:
The patent implements self-service through an integrated diagnostic system that automatically monitors pump conditions and performs malfunction detection without requiring external intervention or complex sensor arrays. The system uses its sensors to continuously assess its own health status, providing accurate condition monitoring while keeping the device complexity manageable through automated analysis and minimal hardware requirements.
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 achieves optimized operation with reduced power consumption, improved reliability, and cost-effectiveness by monitoring oil viscosity and enabling sensorless diagnostics, while maintaining pump integrity and efficiency.
Implementation Method 1
a permanent-magnet motor with variable rotation rate which is adapted to control said pump
Data Source
Figure 1
AI summary
A vacuum pump, particularly for apparatuses for food preservation, which comprises a pump body (2), a permanent-magnet motor with variable rotation rate (3) which is adapted to control the pump, and an electronic power and control board (4), controlled by the permanent-magnet motor with variable rotation rate (3).