Compressor Control Valves for Vehicle Air Dryer Regeneration
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Solution Overview
Problem
Existing air procurement devices for compressed air systems in vehicles face inefficiencies in dryer regeneration, particularly due to high production costs associated with special valves and limited flexibility in operation modes.
Innovation Solution
An air supply device with electrically controllable compressor control valves and three electrically controllable pneumatic valves, allowing for direct or indirect compressor control, enabling efficient regeneration and operation of two-chamber dryers with asymmetrical design for cost-effective and flexible switching between conveying and regeneration modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If special solenoid valves are used to control dryer regeneration, then reliable switching between conveying and regeneration modes is achieved, but production costs increase significantly
Solution Approach 1:
The patent uses standard magnetic valves instead of special solenoid valves, copying the control function from expensive specialized components to affordable off-the-shelf components. The control device replicates the switching logic software-based rather than hardware-based, achieving the same reliability at lower cost.
Solution Approach 2:
The patent replaces mechanical/pneumatic control systems with an electronically controlled system. A control device with microprocessor executes a control program to manage the magnetic valves, substituting complex mechanical valve arrangements with electronic control logic, thereby reducing hardware complexity and cost while maintaining reliability.
2Ease of operation
If fixed counting times are used to initiate regeneration phases, then simple control is achieved, but operational flexibility is reduced
Solution Approach 1:
The patent implements dynamic control where the control device can adapt regeneration timing based on actual system conditions. Instead of fixed predetermined intervals, the system monitors operational parameters and adjusts regeneration phases dynamically, allowing flexibility in operation modes while maintaining ease of control through automated decision-making.
Solution Approach 2:
The control device incorporates feedback mechanisms to monitor system state and determine optimal regeneration timing. The control program evaluates actual operating conditions and adjusts regeneration phases accordingly, providing both simplicity through automation and flexibility through condition-based decision-making.
3Productivity
If two-chamber dryer configuration is used with alternating conveying operation, then continuous air supply is maintained, but device complexity increases
Solution Approach 1:
The patent combines two dryer chambers into a single integrated system where the control device manages alternating conveying operations. By merging the control logic into a centralized electronic system rather than using separate mechanical control mechanisms for each chamber, the system achieves continuous air supply while reducing overall complexity.
Solution Approach 2:
The control device serves multiple functions: it controls both dryer chambers, manages magnetic valves, monitors system state, and determines regeneration timing. This multi-functional approach reduces the need for separate control mechanisms for each function, simplifying the overall system while maintaining continuous operation capability.
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 enables efficient regeneration of dryers, flexible operation modes, and extended maintenance intervals, reducing production costs and improving system efficiency by allowing selective operation and power-down purge capabilities.
Implementation Method 1
three electrically controllable pneumatic valves, in particular magnetic valves
Implementation Method 2
connected to the vehicle's compressor and are used to dry the air conveyed by the compressor
Implementation Method 3
a dryer block or an air treatment device that dries compressed air delivered by a compressor
Data Source
Figure 1
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AI summary
The invention relates to an air supply device (1) for a compressed air system (70) of a vehicle, wherein the air supply device (1) comprises: a compressor connection (3-1) for connecting a compressor (8), a first dryer unit (10) and a second dryer unit (12), a switching valve device (14, 16) for connecting the first dryer unit (10) to the compressor connection (3-1) for a first delivery operation or the second dryer unit (12) to the compressor connection (3-1) for a second delivery operation, a storage area (20, 34) for storing or receiving or for distributing and forwarding compressed air delivered by the dryer units (10, 12), a regeneration valve device (40, 22, 24) for regenerating the dryer units (10, 12) by connecting the storage area (34) to a dryer outlet (10b, 12b) of the first dryer unit (10) or second dryer unit (12)wherein the switching valve assembly (32, 14) and the regeneration valve assembly (40, 22, 24) each have an electrically controllable solenoid valve (32, 40). It is provided that the air supply device has an electrically controllable compressor control valve for direct or indirect control of the compressor (8).