Passive Flow Control Nozzles for Sustained Volatile Compound Release
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Solution Overview
Problem
Current methods for controlling mosquito-borne diseases and plant pests in open outdoor environments are ineffective due to limitations in maintaining effective concentrations of volatile repellents over large areas and extended periods, leading to frequent replacements and high labor costs, with existing devices failing to provide continuous protection beyond a few hours and often resulting in pesticide resistance and environmental contamination.
Innovation Solution
A vapor delivery system utilizing passive flow control nozzles with mass-regulating polymeric barriers and strategically positioned replenishing connectors to maintain pre-designed geometrically shaped volumes of volatile compounds at biologically effective thresholds for extended periods, allowing for continuous and constant release rates of repellents, monitored and adjusted as needed to ensure effective protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional vapor dispensing devices are used to release volatile compounds, then initial repellent effect is achieved, but the concentration cannot be maintained above biologically active threshold over extended periods
Solution Approach 1:
The system divides the vapor delivery function into multiple passive flow control nozzles distributed throughout the environment, each independently maintaining local concentration thresholds. This segmentation allows the overall system to sustain effective repellent levels over extended periods and large areas, resolving the contradiction between duration and concentration maintenance.
Solution Approach 2:
The passive flow control nozzles are designed to continuously release volatile compounds at rates that maintain biologically active thresholds without interruption. This continuous action eliminates the concentration drops that occur with conventional devices, ensuring reliable long-term protection.
2Area of stationary object
If large quantities of volatile compounds are released to cover large areas, then area of protection is increased, but the compounds dissipate quickly requiring frequent replacements
Solution Approach 1:
The system employs multiple passive flow control nozzles strategically positioned to create localized zones of effective concentration. Each nozzle maintains optimal repellent levels in its immediate vicinity, allowing the overall system to cover large areas while individual units operate efficiently without rapid dissipation or frequent replacement.
3Reliability
If broad-spectrum insecticides are applied frequently to control pest populations, then pest control effectiveness is maintained, but pesticide resistance develops and environmental contamination increases
Solution Approach 1:
The system converts the previously harmful approach of frequent broad-spectrum insecticide application into a beneficial alternative using passive flow control nozzles that release volatile compounds at sustained low concentrations. This eliminates pesticide resistance development and environmental contamination while maintaining reliable pest control effectiveness through continuous biological activity inhibition.
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 provides long-term protection against mosquito-borne diseases and plant pests by maintaining effective concentrations of volatile compounds, reducing the need for frequent replacements and pesticide use, while minimizing environmental impact and ensuring protection over large areas for up to a year or more.
Implementation Method 1
passive flow control nozzles with mass-regulating polymeric barriers... allowing for continuous and constant release rates of repellents
Implementation Method 2
passive flow control nozzles with mass-regulating polymeric barriers... monitored and adjusted as needed to ensure effective protection
Data Source
AI summary
Methods to create and maintain pre-designed geometrically shaped volumes of an effective dynamic mixture of volatile compounds encompassing an object of protection for very long times, up to one or more years, for control of pests and pest-borne diseases in open outdoor environments of importance to humans, animals and plants. The methods include using a plurality of passive flow control nozzles containing mass-regulating barriers with retaining fixtures, strategically positioned and uniquely oriented, connected to volatile compound-storing structures with replenishing connectors, for delivering controlled release of volatile compounds using individual passive flow control nozzles that dispense volatile compounds at continuous, predetermined, substantially constant and sustainable release rates over extended periods of time, appurtenances to protect the mass-regulating barriers while in operation, and sensors to monitor the biologically active threshold and the concentrations of volatile compound within the pre-designed geometrically shaped volumes of volatile compounds.