Air Dryer Control Using Compressor Delivery Volume
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Solution Overview
Problem
Existing air drying systems in vehicles, particularly rail vehicles, require the use of a speed sensor to switch between drying and regeneration phases, which complicates the control and optimization of the air dryer's operation.
Innovation Solution
A control device that detects setpoint values for the compressor device and outputs switching signals based on these values, eliminating the need for a speed sensor and optimizing the air dryer's operation by adjusting the switching interval and delivery volume, thereby enhancing maintenance and overhaul cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a speed sensor is used to control the air dryer switching between drying and regeneration phases, then the switching can be implemented, but the device complexity increases and the control optimization is limited
Solution Approach 1:
The patent removes the speed sensor from the system by extracting its function. The control device now directly uses compressor delivery volume information to control the air dryer switching, eliminating the need for separate speed sensing components while maintaining control capability.
Solution Approach 2:
The control device is enhanced to perform multiple functions: it now both monitors compressor delivery volume and controls air dryer phase switching based on this information. This multi-functional approach replaces the dedicated speed sensor's role while optimizing control based on actual delivery volume.
2Productivity
If the air dryer switching interval is fixed, then the control is simple, but the utilization efficiency decreases
Solution Approach 1:
The air dryer switching interval is made dynamic rather than fixed. The control device adjusts the switching timing based on actual compressor delivery volume, allowing the system to adapt to varying operational conditions and optimize air dryer utilization efficiency dynamically.
Solution Approach 2:
The control device uses feedback from compressor delivery volume monitoring to intelligently determine when to switch the air dryer phases. This feedback mechanism enables optimized switching intervals that respond to actual system conditions, improving overall efficiency.
3Ease of repair
If delivery volume is not monitored, then the system is simpler, but the maintenance optimization is reduced
Solution Approach 1:
The control device performs self-service by automatically monitoring delivery volume and using this information to optimize maintenance scheduling. The system autonomously tracks operational parameters and determines when maintenance should be performed, eliminating the need for separate monitoring infrastructure.
Data Source
Figure 1~1A
Figure 1B
Figure 2
AI summary
The invention relates to an arrangement (20; 120; 220) for drying air (L), wherein, in response to a switching signal (U) output by a control device (30), two drying chambers (51, 52) connected to a compressor device (40) can be alternately switched to a drying phase and a regeneration phase. The control device (30) is suitably configured to detect a desire value (S.Soll) set for the compressor device (40) and to output the switching signal (U) depending on the detected desired value (S.Soll) to simplify drying of the air. The invention also relates to a vehicle (1) comprising such an arrangement (20; 120; 220) and to a method for drying air (L).