Air Compressor Thermostatic Valve Temperature Control
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Solution Overview
Problem
Existing air compressor temperature control systems struggle to maintain optimal operating temperatures without condensation, leading to mechanical stress and oil degradation, and are either complex, expensive, or unable to react to rapid load variations.
Innovation Solution
A thermostatic valve with a dimensionally changeable controlling member, influenced by external commands and input data such as environmental conditions, controls the amount of oil supplied to the cooler to maintain a temperature below the condensation point, using a three-way valve or thermal expansion material to bypass the oil cooler as necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the operating temperature is kept high to prevent condensation, then condensation is avoided, but mechanical stress increases and oil properties deteriorate
Solution Approach 1:
The patent implements dynamic temperature control by continuously monitoring condensation risk and adjusting the operating temperature accordingly. The system transitions from static high-temperature operation to dynamic adjustment, lowering temperature when condensation risk is low and raising it when condensation risk increases, thereby reducing mechanical stress and oil degradation while preventing condensation only when necessary
Solution Approach 2:
The system changes the operating temperature parameter dynamically based on condensation risk assessment. By monitoring environmental conditions and calculating condensation points, the system adjusts the temperature setpoint in real-time, allowing operation at lower temperatures when safe and higher temperatures when condensation prevention is critical, thus resolving the contradiction between preventing condensation and maintaining mechanical strength
2Measurement precision
If a complex control system with multiple sensors and processors is used, then temperature control precision improves, but device complexity and cost increase
Solution Approach 1:
The control system utilizes readily available data from existing compressor operations (load, ambient temperature, humidity) and combines it with simple condensation point calculations to determine optimal operating temperature. This self-service approach eliminates the need for complex specialized sensors and processors, achieving adequate temperature control precision using existing system resources and simple computational logic
Solution Approach 2:
Instead of implementing complex physical sensing systems for direct condensation detection, the system uses a computational model that copies and processes readily available environmental and operational data to predict condensation risk. This virtual modeling approach achieves accurate temperature control without requiring complex physical measurement infrastructure
3Object-affected harmful factors
If the thermostatic valve set value is increased to prevent condensation, then condensation is avoided, but oil properties deteriorate and mechanical stress increases
Solution Approach 1:
The thermostatic valve set value is transformed from a fixed high temperature to a dynamic parameter that adjusts continuously based on condensation risk. The system calculates the minimum safe temperature to prevent condensation and sets the valve accordingly, allowing operation at lower temperatures when condensation risk is minimal and only raising the set value when condensation prevention becomes critical, thereby minimizing oil degradation and mechanical stress
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 provides a simple, cost-effective, and reliable method to control air compressor temperatures, reducing mechanical stress and oil degradation while ensuring no condensation occurs, with low power demand and easy integration into existing systems.
Implementation Method 1
a thermostatic valve with a dimensionally changeable controlling member, influenced by external commands
Implementation Method 2
supplying at least some of the oil flowing in the oil circulating pipe to cooling when necessary
Implementation Method 3
compressing by a compressor element a mixture of air and oil
Implementation Method 4
separating in the oil separator the air and the oil from one another
Data Source
Figure 1~2a
Figure 2b~2c
AI summary
The invention relates to a method and equipment for controlling an operating temperature of an air compressor. A compressor element (1) is used for compressing a mixture of air and oil and supplying it to an oil separator (3). In the oil separator (3), the air and the oil are separated from one another. The oil is led to an oil circulating pipe (7) so as to be returned to the compressor element. When necessary, at least some of the oil flowing in the oil circulating pipe (7) is supplied to cooling. The amount of oil to be supplied to cooling is used for controlling the operating temperature of the compressor such that it is as low as possible, but nevertheless so high that no condensation point is reached. The amount of the oil to be supplied to cooling is controlled by a thermostatic valve (11) based on a change in dimension of a controlling element such that the dimension of the controlling element is changed by an external command as necessary.