Insecticide Jet Range via Gas Mixture Propulsion
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Solution Overview
Problem
Existing methods for eliminating wasps and hornets, such as spraying insecticide products, often have a limited jet range, making it difficult for users to target nests from a safe distance.
Innovation Solution
A method using a diffusion device with an aerosol composition comprising an insecticide product, a mixture of liquefied gas (e.g., 1,1,1,2-tetrafluoroethane) and compressed gas (e.g., carbon dioxide) with a mass ratio between 5 and 30, which increases the jet range and allows for effective spraying from a distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a liquefied gas propellant is used in pressurized insecticidal compositions, then the composition can be sprayed effectively, but the jet range becomes insufficient when the user needs to remain at a distance from dangerous insect nests
Solution Approach 1:
The patent changes the physical state parameters of the propellant system by combining liquefied gas (under pressure) with compressed gas. This parameter change in the propellant composition enables the jet to achieve extended range while maintaining spray effectiveness, directly resolving the contradiction between jet range and user safety distance
Solution Approach 2:
The patent uses a composite propellant system combining two different types of gases (liquefied gas and compressed gas) with specific mass ratios. This composite approach leverages the advantages of both gas types to achieve extended jet range while maintaining controllability, allowing users to safely target nests from a distance
2Ease of operation
If the jet range is increased to allow spraying from a distance, then user safety is improved, but the spray effectiveness and insecticide delivery may be compromised
Solution Approach 1:
The patent optimizes parameters including the mass ratio of liquefied gas to compressed gas (between 5:1 and 30:1), propellant pressure (2-10 bar), and nozzle characteristics to maintain spray effectiveness while achieving extended range. These parameter adjustments ensure reliable insecticide delivery even at increased distances from the target
Solution Approach 2:
The patent employs pneumatic principles by using compressed gas to supplement the propellant force, ensuring that the insecticide spray maintains adequate velocity and distribution patterns even when delivered from a distance, thus preserving spray effectiveness and reliability
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 enables users to safely eliminate wasps and hornets from a distance by significantly increasing the range of the insecticide jet, ensuring effective targeting and elimination of insect nests.
Implementation Method 1
a mixture of at least one liquefied gas and at least one compressed gas, the mixture being configured to allow the propulsion of the insecticide product during its spraying
Implementation Method 2
the spraying being carried out using a diffusion device of an aerosol
Implementation Method 3
the gas mixture is used as a propellant gas allowing the distribution of the insecticide product in the form of an aerosol
Data Source
Figure 1
Figure 2~4
AI summary
The present invention relates to a method for eliminating insects by spraying an insecticidal composition so as to eliminate wasps and/or hornets, the composition comprising: • an insecticidal product suitable for killing wasps and/or hornets, and • a mixture of at least one liquefied gas and at least one compressed gas, the mixture being configured to allow the propulsion of the insecticidal product during its spraying, the insecticidal composition being characterized in that: - the mass ratio (mass of liquefied gas(s))/(mass of compressed gas(s)) is between 5 and 30, in particular between 15 and 25, and/or - the mass ratio (mass of liquefied gas(s) + mass of compressed gas(s))/(total mass of the insecticidal composition) is between 25% and 70%, in particular between 35% and 50%.