Foaming unit for producing foam from a mixture of gas and liquid and a sprayer for producing and dispensing foam
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Solution Overview
Problem
Existing foam production systems, such as pressure sprayers, lack the ability to quickly and easily adjust the consistency of the foam produced, leading to suboptimal results and inefficiencies in foam consumption.
Innovation Solution
A foaming unit with a hydraulically arranged foaming element, where the active volume can be adjusted by changing the relative position of a control edge and an end face, allowing for control of the flow path of the propellant and liquid, thereby adjusting the foam consistency without the need to replace or alter the foaming element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If felt disks are arranged one behind the other and the number of felt disks is altered to adjust foam consistency, then the foam consistency can be adjusted, but the adjustment process becomes time-consuming and impractical
Solution Approach 1:
The invention applies the dynamics principle by making the foaming element itself movable within the spray head. The foaming element can be shifted axially to vary the length of the flow path through the porous material, thereby dynamically adjusting the active volume and foam consistency. This eliminates the need to disassemble and reconfigure multiple felt disks, allowing quick adjustment simply by moving the single foaming element to different positions.
2Adaptability or versatility
If the spray head is disassembled to adjust foam consistency by installing or removing felt pads, then the foam consistency can be changed, but the adjustment process becomes complex and impractical
Solution Approach 1:
The invention segments the foam adjustment function from the structural components. Instead of requiring disassembly of the spray head to access and reconfigure multiple felt disks, the foaming element is designed as a separate, movable component that can be positioned independently. This segmentation allows the user to adjust foam consistency by simply moving the foaming element along its axis without disturbing the overall spray head structure or dealing with multiple felt pad installations.
3Manufacturing precision
If the active volume of the foaming element is increased to produce more solid foam, then the foam consistency improves, but the device complexity increases due to replacement or alteration requirements
Solution Approach 1:
The invention applies parameter changes by varying the active volume of the foaming element through positional adjustment rather than physical modification. By changing the position of the foaming element along its axis, the effective length of the flow path through the porous material is altered, which changes the active volume and consequently the foam consistency. This parameter change approach avoids the complexity of replacing or altering the foaming element's physical dimensions, as the same element can produce different foam consistencies at different positions.
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
Enables rapid and easy adjustment of foam consistency across a wide range of applications, ensuring optimal results without disassembling the sprayer and reducing foam consumption.
Implementation Method 1
When the liquid is forced through said porous material with sufficient pressure together with the propellant, the desired foam is produced upon exiting the foaming element
Implementation Method 2
The foaming element is a body made of a porous material
Data Source
AI summary
A foaming unit for producing foam from a mixture of gas and liquid. The foaming unit comprising a housing, a slide, a foaming element, an inlet for the mixture of gas and liquid and an outlet, the slide and the housing being movable relative to each other, the foaming element being arranged hydraulically between the inlet and the outlet, wherein an active volume of the foaming element can be adjusted by changing the relative position of a control edge and an end face of the foaming element.