Fluid Sensing Safety for Pump Protection
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Solution Overview
Problem
The need for intermittent high-pressure water supply in applications like pressure washing is inefficient due to the frequent starting and stopping of engines, which is burdensome and inconvenient.
Innovation Solution
A fluid sensing system that includes a pump, a prime mover, and a sensing system to detect the presence of fluid in a vessel, using capacitance, resistance, or purity sensing to control the prime mover's operation, ensuring it only starts or continues running when a threshold quantity of fluid is present, preventing damage and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the engine is manually started and stopped to satisfy intermittent demand for pressurized water, then the pressure washer can provide high-pressure water only when needed, but the frequent starting and stopping is burdensome and inconvenient
Solution Approach 1:
The system enables itself to start automatically when fluid is detected and shuts down automatically when fluid is depleted, eliminating the need for manual operation. The prime mover controller monitors fluid presence via the sensing system and autonomously controls engine start/stop cycles based on fluid availability in the fluid source.
2Duration of action of stationary object
If the prime mover operates without sufficient fluid, then the engine can run continuously, but the pump suffers from wear and overheating
Solution Approach 1:
The sensing system continuously monitors fluid presence and provides feedback to the prime mover controller. When fluid is detected, the controller enables engine operation; when fluid is depleted, the controller shuts down the engine, creating a closed-loop control system that prevents pump damage by ensuring fluid availability before operation.
3Extent of automation
If a sensing system is added to detect fluid presence and control the prime mover, then automatic operation and pump protection are achieved, but the device complexity increases
Solution Approach 1:
The system replaces manual mechanical operation with an automated sensing and control system. The sensing system detects fluid presence electrically, and the controller automatically manages engine start/stop sequences, substituting human intervention with electronic detection and control mechanisms.
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 system optimizes engine operation by ensuring fluid availability, reducing wear and overheating, and enhancing the efficiency and effectiveness of high-pressure tasks by automatically managing fluid supply, thus improving operational convenience.
Implementation Method 1
The presence of fluid within the fluid vessel may change a capacitance associated with the metallic strip
Implementation Method 2
A fluid sensing system may be configured to determine the presence of fluid within a fluid vessel associated with the pump
Data Source
AI summary
A fluid sensing safety may include a pump, and a prime mover configured to drive the pump. A fluid vessel may be associated with the pump. A sensing system may be configured to determine the presence of fluid within the fluid vessel.