Multi-Mode Compressor Pressure Switch for Longer Air Tool Runtime
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Solution Overview
Problem
Existing air tools often require continuous operation, which exceeds the capacity of standard retail format air compressors, leading to insufficient air pressure and reduced operational time.
Innovation Solution
A multi-mode air compressor switch that adds compressor output to existing tank capacity, enabling extended operational time by adjusting cut-in and cut-out pressures and allowing for quick charge modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If standard retail format air compressors are used, then device simplicity is maintained, but operational duration is insufficient for continuous duty air tools
Solution Approach 1:
The pressure switch enables dynamic operation by allowing the compressor to cycle between on and off states based on tank pressure levels. The switch provides two distinct modes: a first mode with a larger pressure differential for extended operational time, and a second mode with a smaller pressure differential for higher sustained output, allowing the system to adapt to different operational requirements
Solution Approach 2:
The invention changes the pressure differential parameter between two modes. In the first mode, the pressure differential is larger (e.g., 10-20 PSI), allowing the tank pressure to drop more before recompression begins, extending operational time. In the second mode, the pressure differential is smaller (e.g., 2-5 PSI), maintaining higher average pressure for high consumption tools. This parameter switching resolves the contradiction between operational duration and output capacity
2Duration of action of moving object
If compressor cut-in pressure is lowered to extend operational time, then duration of action is improved, but air pressure available for high consumption tools deteriorates
Solution Approach 1:
The system dynamically switches between two pressure differential modes depending on tool requirements. The first mode allows pressure to drop more (extending operational time), while the second mode maintains higher pressure levels (providing power for high consumption tools). This dynamic switching resolves the contradiction between duration and power
Solution Approach 2:
The compressor operates in periodic cycles with two distinct patterns. In the first mode, compression cycles occur less frequently with larger pressure drops, extending operational time. In the second mode, compression cycles occur more frequently with smaller pressure drops, maintaining higher power output. This periodic action with variable characteristics resolves the contradiction
3Power
If compressor runs continuously to maintain high pressure, then power output is improved, but loss of time due to frequent cycling deteriorates
Solution Approach 1:
The second mode uses partial action by maintaining a smaller pressure differential, causing the compressor to cycle more frequently but for shorter durations each cycle. This provides sufficient power for high consumption tools while minimizing the time lost to cycling compared to running continuously in the first mode
Solution Approach 2:
The system changes the pressure differential parameter to optimize the balance between power output and cycling time. By switching to a smaller pressure differential in the second mode, the compressor maintains higher average pressure for power-critical operations while the frequent short cycles minimize time loss
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 extends the operational time of air tools by providing additional compressor output, allowing tools to run at higher pressures for longer periods, especially during high consumption rates.
Implementation Method 1
a pressure-based power/control switch arrangement that is configured for use with air compressors
Data Source
AI summary
A multi-mode air compressor pressure switch is disclosed. A first mode of operation of the switch has a first range that includes a first cut-out pressure and a first cut-in pressure. A second mode of operation of the switch has a second range that includes a second cut-out pressure and a second cut-in pressure. The second range is smaller than the first range. The second mode of operation adds compressor output over the first mode of operation to extend operable time of a tool that is connected to a compressor that is controlled by the first mode and the second mode.