Compressed Air Drying Inlet Valve Pressure Control
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Solution Overview
Problem
Compressed air drying devices discharge compressed air supplied by forced induction devices into atmospheric air during unload operations, leading to a decrease in forced induction pressure, which is undesirable.
Innovation Solution
A compressed air drying device with an inlet opening/closing device that automatically opens and closes the inlet using a valve member and urging spring, preventing compressed air from the forced induction device from entering or being discharged during unload operations, thus maintaining forced induction pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the compressed air drying device discharges compressed air into atmospheric air during unload operation, then the desiccant can be regenerated, but the forced induction pressure decreases
Solution Approach 1:
The patent extracts the harmful discharge of compressed air from the system by providing a discharge prevention mechanism. The inlet opening/closing device prevents compressed air from entering the drying device during unload operation, and the drain valve controls the discharge of only water and oil, thereby preventing the loss of forced induction pressure while maintaining desiccant regeneration functionality
Solution Approach 2:
The patent introduces control mechanisms as intermediaries between the unload operation and the compressed air flow. The inlet opening/closing device and drain valve act as intermediaries that selectively control what flows through the system during regeneration, allowing water and oil to be discharged while preventing compressed air from being released, thus protecting the forced induction pressure
2Ease of operation
If the inlet remains open during unload operation, then compressed air can flow through the system, but the forced induction pressure is reduced
Solution Approach 1:
The patent applies dynamics by making the inlet opening/closing device automatically switch between open and closed states based on the operational mode. During load operation, the inlet remains open for continuous air flow; during unload operation, the inlet closes to prevent pressure loss. This dynamic adjustment resolves the contradiction between ease of operation and pressure maintenance
3Volume of moving object
If the compressor compression amount is reduced, then the compressor size can be decreased, but the forced induction pressure stability is compromised
Solution Approach 1:
The patent ensures continuity of useful action by preventing the interruption of forced induction pressure during the unload operation. By controlling the inlet and drain valve to maintain pressure stability, the system allows the compressor to operate at reduced capacity with smaller size while the forced induction pressure remains stable and continuous for engine operation
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 effectively limits the influence on forced induction pressure by ensuring that compressed air from the forced induction device is not introduced or discharged during unload operations, allowing for efficient drying and regeneration while reducing compressor size through reduced compression amounts.
Implementation Method 1
The desiccant of the compressed air drying device adsorbs and removes water from compressed air, thus drying the compressed air
Implementation Method 2
an urging spring that urges the valve member in a direction in which the inlet is opened
Data Source
AI summary
A compressed air drying device includes a support case, a drying container installed in the support case, and a cover installed on the support case while covering the drying container. In load operation, compressed air that flows from an inlet of the support case is dried by a desiccant, and the dried compressed air is discharged. In unload operation, the compressed air inside the cover is passed through the inside of the drying container and oil and water is drained from a drain outlet. The compressed air drying device further includes an inlet opening/closing device that opens the inlet in the load operation, and closes the inlet in the unload operation.