Treated Nebulizer Tip and Spray Chamber for Droplet Control
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Solution Overview
Problem
Existing nebulizer and spray chamber systems face challenges in reducing surface tension of sample liquid waste, leading to droplet formation, which affects efficient fluid communication and rinsing processes.
Innovation Solution
The nebulizer and spray chamber are treated using physical abrasion techniques or chemical etching to create surfaces that reduce surface tension, with features like a drain ridge and output port designed to facilitate smooth liquid flow and prevent droplet formation, and an additional port for continuous or intermittent rinse liquid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the nebulizer and spray chamber surfaces are left untreated, then the manufacturing process is simpler and cost-effective, but surface tension of sample liquid waste is not reduced, leading to droplet formation
Solution Approach 1:
The patent applies surface treatment processes (chemical etching, physical vapor deposition, plasma treatment, or sandblasting) that fundamentally change the surface parameters of the nebulizer tip and spray chamber interior surfaces. These treatments modify surface energy characteristics, creating hydrophilic surfaces with reduced surface tension that prevent droplet formation. The surface treatment transforms the surface chemistry and physics without changing the bulk material properties, thereby eliminating droplet formation while maintaining manufacturing feasibility through established industrial processes.
Solution Approach 2:
The patent replaces the need for mechanical droplet removal mechanisms with a surface property-based solution. Instead of using mechanical means to prevent or remove droplets, the invention uses chemically treated surfaces that inherently repel liquid waste through modified surface tension characteristics. This substitution of mechanical systems with surface chemistry-based solutions simplifies the overall system while effectively preventing droplet formation.
2Ease of operation
If rinse liquid flow is not implemented continuously or intermittently, then the system operation is simpler, but complete rinsing without trailing effects cannot be achieved
Solution Approach 1:
The patent segments the rinse liquid delivery system by providing multiple dedicated ports (first rinse port and second rinse port) that can be selectively activated. This segmentation allows different portions of the spray chamber to be rinsed independently or simultaneously, ensuring complete coverage and elimination of trailing effects. The segmented port configuration enables targeted rinsing of specific areas without requiring complete system disassembly or complex multi-component systems.
Solution Approach 2:
The patent implements periodic or intermittent rinse liquid flow through the spray chamber using the additional ports. Rather than continuous flow, the system can deliver rinse liquid in periodic cycles that effectively flush the chamber interior. This periodic action is sufficient to achieve complete rinsing without trailing effects while consuming less rinse liquid and maintaining simpler operational control compared to continuous flow systems.
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 treated surfaces and design features enable efficient reduction of droplet formation, ensuring effective fluid communication and complete rinsing without trailing effects, enhancing the nebulizer and spray chamber's performance in handling liquid waste.
Implementation Method 1
treated surfaces that reduce the surface tension of sample liquid waste to reduce or prevent droplet formation
Data Source
AI summary
A system can include a nebulizer having a tip and a spray chamber configured to be in fluid communication with the nebulizer. The tip of the nebulizer and/or an interior of the spray chamber can have a treated surface. The nebulizer and/or the spray chamber can be treated using a physical abrasion technique, chemically etched, and so forth. In some embodiments, treated surfaces of the nebulizer and the spray chamber can be proximate to one another. The spray chamber can include a drain ridge, which can project into an interior of the spray chamber, be depressed away from an interior of the spray chamber, and/or include a treated surface. The spray chamber can also include an output port having a treated surface. In some embodiments, the output port can include an additional port so that rinse liquid can flow through the spray chamber (e.g., continuously and/or intermittently).