Spray Wand Solid Chemistry Dilution One-Handed Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hose-end type cleaning devices for outdoor surfaces are heavy, bulky, and ergonomically unsuitable, limiting user mobility and requiring two hands for operation, while also restricting spray reach due to water flow restrictors.
Innovation Solution
A spray wand designed for one-handed use, employing a solid chemistry formulation that is more concentrated and lighter, with a swirl chamber to ensure consistent dilution and increased spray reach, allowing for efficient delivery of pesticidal actives and improved ergonomic design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If liquid concentrate is stored in a bottom reservoir for hose-end cleaning devices, then the device can deliver diluted cleaning solution, but the device becomes heavy and bulky requiring two hands to operate
Solution Approach 1:
The patent changes the physical state of the chemistry from liquid concentrate to solid composition (pellets, granules, or powder). This parameter change eliminates the need for a liquid reservoir, dramatically reducing device weight and bulk while maintaining the ability to deliver cleaning solution through water dissolution of the solid chemistry.
2Manufacturing precision
If water flow restrictors are used to ensure correct dilution ratio, then the dilution is controlled, but the spray reach is greatly diminished
Solution Approach 1:
The patent changes the chemistry form to solid composition that dissolves in water as it flows through the wand. The amount of solid chemistry is controlled by its placement and the water flow rate, providing dilution control without mechanical restrictors that limit spray reach. The solid chemistry dissolves progressively as water flows through, maintaining spray pressure and reach.
3Ease of manufacture
If the hose hooks into the device at the standard location, then the device can be connected to water source, but the range of motion when cleaning is greatly hindered
Solution Approach 1:
The patent segments the device into a handheld wand portion and a separate hose connection point. The hose connects to the wand handle area, allowing the user to hold the wand with one hand while the hose remains attached to the water source, providing full range of motion without compromising connection capability.
4Productivity
If liquid concentrate is used for cleaning, then the cleaning solution can be diluted, but the device requires two hands for operation reducing ergonomics
Solution Approach 1:
The patent changes the chemistry from liquid concentrate requiring reservoir storage to solid composition that can be directly placed in the wand. This eliminates the heavy reservoir, allowing one-handed operation while maintaining the ability to prepare and deliver diluted cleaning solution through water dissolution.
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 spray wand provides a lighter, more ergonomic solution for outdoor cleaning, ensuring consistent dilution of pesticidal actives and increased spray reach, enabling effective one-handed operation and improved user comfort.
Implementation Method 1
Upon rotation of the column to at least one open position, the sealing piston biased within the input conduit is pressed from the sealing position
Implementation Method 2
a sealing piston biased within the input conduit toward a sealing position thereof
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A spray wand includes: a hollow tubular main body; a nozzle mounted on the output end of the main body; and a valve assembly configured to mount the input end of the main body. The valve assembly includes: a housing having an input conduit for coupling the valve assembly with a fluid source; a sealing piston biased within the input conduit toward a sealing position thereof; and a valve core having a column rotatable within the interior space of the housing and a handle extending from the column, the valve core being rotatable between at least one open position corresponding to an open condition of the valve assembly and at least one closed position corresponding to a closed condition of the valve assembly. Upon rotation of the column to at least one open position thereof, the sealing piston biased within the input conduit is pressed from the sealing position.