Trigger-Controlled Dispensing Device for Froth and Film Coatings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for applying liquid building wraps require two separate pieces of equipment for froth foam and film-forming fluid applications, which is costly and inconvenient.
Innovation Solution
A single dispensing device with a unified flow channel that can switch between foamed and non-foamed fluid applications by using a trigger-controlled flow regulator, flow block, mixing block, and optional stabilization block, allowing for the simultaneous use of gas and fluid to create foam or non-foamed coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate pieces of equipment are used for froth foam and film-forming fluid applications, then each application can be performed with dedicated equipment, but the cost and complexity of equipment ownership and operation increases
Solution Approach 1:
The dispensing device is designed with a universal flow channel and trigger-controlled flow regulator that can handle both froth foam and film-forming fluid applications through a single unit. The device incorporates interchangeable components (flow block for foam, spray nozzle for liquid) that allow one base device to perform multiple functions, eliminating the need for separate equipment while maintaining application performance
Solution Approach 2:
The dispensing device is segmented into modular components including a base body with flow regulator, interchangeable flow blocks for foam application, and spray nozzles for liquid application. This segmentation allows the user to attach only the necessary component for each specific application type, reducing overall equipment complexity while maintaining specialized functionality for each coating type
2Device complexity
If a single dispensing device is used for both froth foam and film-forming fluid applications, then equipment cost and complexity is reduced, but the device must handle different fluid types and application modes
Solution Approach 1:
The device incorporates a trigger-controlled flow regulator that dynamically adjusts fluid flow based on the selected component configuration. The trigger mechanism allows real-time switching between different flow patterns suitable for foam dispensing or liquid spraying, enabling the single device to adapt to different application modes without mechanical reconfiguration during operation
Solution Approach 2:
The device design extracts and separates the foam-generation components (flow block with mixing chamber) from the base dispensing mechanism, allowing them to be removed when liquid application is needed. Conversely, spray nozzles can be attached to the base device when foam application is not required, enabling the system to shed unnecessary components and reducing versatility requirements for each specific task
3Reliability
If froth foam is applied first to seal gaps and cracks, then the structure is sealed, but additional equipment is required for the subsequent film-forming fluid application
Solution Approach 1:
The single dispensing device maintains universal functionality throughout the two-step LBW application process. After completing foam application to seal gaps and cracks, the user simply detaches the flow block and attaches a spray nozzle to the same base device, eliminating equipment setup time and allowing continuous workflow between sealing and film-forming steps
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 efficient and cost-effective application of both froth foam and film-forming fluid using a single device, reducing equipment needs and improving application efficiency for liquid building wraps.
Implementation Method 1
a flow restriction orifice between the flow block and flow regulator, the flow restriction orifice having an opening that is smaller in cross sectional area than the flow channel downstream from it in the flow block
Implementation Method 2
a mixing block defining a flow channel in fluid communication with the flow channel of the flow block, the mixing block flow channel containing mixing elements
Implementation Method 3
a stabilization block defining a flow channel in fluid communication with the flow channel of the mixing block where the flow channel in the stabilization block is characterized by an absence of step changes in cross sectional dimensions and by inducing a gradual pressure drop along its length
Data Source
Figure 1
AI summary
A dispensing device (10) capable of dispensing both frothed and non- frothed liquids, the dispensing device having in order a fluid transport medium (20) defining a flow channel (25), a trigger controlled liquid flow regulator (30) defining a flow channel (35) through which fluid may flow when the trigger (37) is in one position but not when the trigger is in another position, a flow block (50) defining a flow channel (55) in fluid communication with a gas channel (65) and removably attached to the flow regulator, a flow restriction orifice (40) between the flow block and the flow regulator (30), a mixing block (70) defining a flow channel (75) containing mixing elements and optionally stabilization (80) and extension blocks each containing a flow channel (85) wherein each flow channel is in fluid communication with one another.