Nozzle Position-Based Jet Pressure Control for Power-Efficient Cleaning
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Solution Overview
Problem
Conventional cleaning apparatuses consume a large amount of power due to inefficient control of ejection pressure in jet-based cleaning processes.
Innovation Solution
A cleaning method and apparatus that dynamically adjust the ejection pressure of a positive displacement pump based on the nozzle's position relative to target portions, using a control device to set the pressure to a higher first pressure when within a target region and a lower second pressure when outside, ensuring efficient power usage and effective cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ejection pressure is maintained at a high level continuously, then the cleaning effectiveness is improved, but the power consumption increases
Solution Approach 1:
The ejection pressure is dynamically adjusted based on the nozzle's position relative to the target portion. The control device switches between first ejection pressure (when within target region) and second ejection pressure (when outside target region), making the pressure adaptive rather than static. This resolves the contradiction by applying high pressure only when needed for cleaning effectiveness while reducing pressure during transit to save energy.
Solution Approach 2:
The ejection pressure parameter is changed based on the spatial position of the nozzle. The control device monitors the distance between the nozzle and target portion, and adjusts the pressure parameter accordingly - maintaining high pressure (first ejection pressure) when the nozzle is within the target region, and lowering it (second ejection pressure) when moving between targets. This parameter change strategy optimizes both cleaning effectiveness and power consumption.
2Use of energy by moving object
If the ejection pressure is reduced to save power, then the power consumption decreases, but the cleaning effectiveness deteriorates
Solution Approach 1:
Different ejection pressures are applied at different spatial locations. The control device ensures that high first ejection pressure is applied locally when the nozzle is within the target region for effective cleaning, while lower second ejection pressure is applied during movement between target portions. This local differentiation of pressure quality maintains cleaning effectiveness where needed while reducing power consumption during transit.
Solution Approach 2:
The control device predicts the nozzle's position based on movement information and proactively adjusts the ejection pressure before the nozzle actually reaches the target region. By determining in advance whether the nozzle will be within or outside the target region, the system can switch pressures optimally, ensuring high pressure is ready when needed while avoiding unnecessary high pressure application, thus balancing power consumption and cleaning effectiveness.
3Use of energy by moving object
If the ejection pressure changes frequently, then the power consumption is optimized, but the system complexity increases
Solution Approach 1:
The control device uses feedback from movement information (current position, remaining distance to target) to automatically adjust the ejection pressure. The system continuously monitors whether the nozzle is within or outside the target region and switches between first and second ejection pressures accordingly. This feedback mechanism optimizes power consumption while keeping the control logic relatively simple - it only requires monitoring position and switching pressure based on predefined thresholds.
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 method reduces power consumption by optimizing ejection pressure according to the nozzle's position, maintaining effective cleaning while minimizing energy expenditure.
Implementation Method 1
generating a jet of a cleaning liquid from a nozzle using a positive displacement pump
Implementation Method 2
The nozzle ejects a cleaning liquid to collide with a workpiece
Implementation Method 3
a feedback control unit configured to perform a feedback control of the rotation speed so that the difference between an ejection pressure of the nozzle and the target pressure becomes zero
Data Source
AI summary
Provided is a cleaning method of reducing the power consumption. The cleaning method including: generating a jet of a cleaning liquid from a nozzle; moving the nozzle so that the jet collides with a target portion of a workpiece; acquiring a current position of the nozzle; determining whether the current position is within a target region corresponding to the target portion; ejecting the jet having an ejection pressure of a first pressure when the current position is within the target region; and ejecting the jet having the ejection pressure lower than the first pressure when the current position is other than the target region.