Compressed Air Regeneration Pressure Loss Control
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Solution Overview
Problem
Existing devices for processing compressed air in commercial vehicles experience unnecessary pressure loss during compressor regeneration, which wastes energy and time when the compressor is restarted.
Innovation Solution
The first solenoid valve is excited to maintain pressure in the line between the compressor and the shut-off valve, preventing the need to refill the compressed volume when the compressor resumes operation, and a safety valve limits pressure to prevent excessive rise, ensuring efficient regeneration and maintaining pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the compressor is switched off during regeneration phase, then energy consumption is reduced, but pressure loss occurs in the compressor line requiring refilling
Solution Approach 1:
The system is divided into two independent control paths: one for the compressor control inlet and another for the vent control inlet. The first solenoid valve controls compressed air supply to both the compressor control inlet and vent control inlet, while the second solenoid valve independently controls the vent control inlet. This segmentation allows the vent to remain closed (maintaining pressure) while the compressor is switched off, resolving the contradiction between energy saving and pressure maintenance.
2Loss of energy
If the vent is kept closed during regeneration, then pressure is maintained in the compressor line, but moisture and dirt cannot be removed from the compressor line
Solution Approach 1:
The system dynamically switches the vent state based on operational phase. During normal operation, the vent is closed to maintain pressure. During regeneration phase, the second solenoid valve opens the vent control inlet, allowing the vent to open and enable moisture and dirt removal through the air dryer unit. This dynamic switching resolves the contradiction between pressure maintenance and contaminant removal.
Solution Approach 2:
The regeneration process operates periodically, alternating between normal operation (vent closed, pressure maintained) and regeneration phase (vent open, contaminants removed). The solenoid valves coordinate to switch between these states, allowing the system to periodically purge moisture and dirt while maintaining pressure during normal operation, thus resolving the contradiction.
3Ease of operation
If compressed air is supplied to both compressor control inlet and vent control inlet, then the compressor can be controlled, but unnecessary pressure loss occurs through the vent
Solution Approach 1:
The control system is segmented into two independent solenoid valve control paths. The first solenoid valve supplies compressed air to both the compressor control inlet and vent control inlet. The second solenoid valve independently controls the vent control inlet, allowing it to remain closed while the compressor control inlet receives pressure. This segmentation enables precise control that prevents unnecessary pressure loss through the vent while maintaining full compressor control functionality.
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 reduces energy consumption and time by maintaining pressure in the compressor line during regeneration, preventing pressure loss and ensuring safe operation, while allowing for effective removal of moisture and dirt from the compressor line.
Implementation Method 1
The first solenoid valve is excited to maintain pressure in the line between the compressor and the shut-off valve
Implementation Method 2
a safety valve limits pressure to prevent excessive rise
Implementation Method 3
The air dryer unit is provided in order to supply dried and purified air to the consumers
Implementation Method 4
compressed air is supplied by a compressor to the device for the processing of compressed air
Data Source
AI summary
A device for processing compressed air for a commercial vehicle is provided. The device includes an inlet connection for connecting a compressor, an air dryer unit, a first solenoid valve for pneumatically shutting off the compressor and blocking a pipe that is connected to the compressor, and a second solenoid valve for controlling a backflow of air to regenerate the air filter unit. Loss of compressed air during regeneration in the pressure in a pipe located between the compressor and a stop valve upstream of the air filter unit is minimized by exciting the first solenoid valve. Different methods for operating the compressed air processing device are also provided.