Self-Cleaning Fountain with Photocatalytic Coating
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Solution Overview
Problem
Conventional decorative water displays and air purification systems face issues such as high water consumption, evaporation, splashing, biofouling, and the need for constant electricity, while existing water curtain systems are complex, prone to corrosion, and lack mobility and self-cleaning capabilities.
Innovation Solution
A mobile, self-cleaning water curtain apparatus using a low viscosity liquid like water to form a continuous film, incorporating a drape with a catch basin, conduit, and pump system, along with antimicrobial materials and UV light for sterilization, and a photocatalytic coating for self-purification, allowing for evaporative cooling and air filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional water curtain systems are used, then air purification function is provided, but device complexity increases and corrosion resistance deteriorates
Solution Approach 1:
The patent applies parameter changes by specifying particular material compositions and coating properties for the water curtain system components. The use of corrosion-resistant materials with specific chemical compositions and protective coatings transforms the physical-chemical parameters of the system to achieve enhanced durability without requiring complex protective mechanisms.
Solution Approach 2:
The patent employs composite materials by combining corrosion-resistant base materials with protective coating layers. This creates a multi-layered structure where the base material provides structural integrity and the coating provides corrosion protection, resolving the contradiction between reliability and simplicity by integrating protection directly into the material composition rather than adding separate protective systems.
2Reliability
If conventional air purification systems are used, then air cleaning function is provided, but energy consumption increases
Solution Approach 1:
The patent applies self-service by designing a water curtain system that utilizes the natural flow of water and ambient air currents to achieve purification without requiring high-energy mechanical components. The system leverages gravity-driven water flow and natural convection to maintain continuous air cleaning, eliminating the need for energy-intensive pumps and forced air movement while sustaining effective purification.
Solution Approach 2:
The patent replaces mechanical air movement systems with a gravity-based water curtain mechanism. Instead of using high-power fans or blowers to force air through filtration media, the system uses the physical barrier and scrubbing action of falling water to naturally intercept and remove particulates, substituting mechanical energy with gravitational potential energy.
3Shape
If decorative water displays are used, then aesthetic effect is provided, but water consumption increases and evaporation occurs
Solution Approach 1:
The patent applies multi-functionality by designing the water curtain to simultaneously serve aesthetic, air purification, and water conservation functions. The same water flow structure that creates the visually appealing curtain effect also serves as the primary mechanism for particle removal and is integrated with a recirculation system that minimizes water loss, allowing one system to fulfill multiple purposes without requiring separate components.
Solution Approach 2:
The patent implements water recovery by incorporating a recirculation system that collects, filters, and reuses water from the curtain. Instead of allowing water to be discarded after a single use, the system continuously recovers and replenishes the water supply, significantly reducing overall water consumption while maintaining the aesthetic and functional performance of the display.
4Reliability
If conventional water curtain systems are used, then air filtration is provided, but maintenance requirements increase due to biofouling
Solution Approach 1:
The patent applies self-service by incorporating self-cleaning mechanisms into the water curtain system. The continuous flow of water through the curtain structure naturally prevents biofilm accumulation by mechanically flushing away organic matter before it can establish significant growth. This self-cleaning action maintains filtration performance without requiring manual intervention or complex maintenance schedules.
Solution Approach 2:
The patent employs periodic action through the continuous cyclic flow of water through the curtain system. This constant movement and replacement of water creates periodic flushing actions that prevent biofouling by disrupting the formation of biological films. The system uses the natural rhythm of water circulation to repeatedly clean the filtration surfaces, eliminating the need for separate maintenance cycles.
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 system provides efficient evaporative cooling, reduces pollutants, and maintains a clean and attractive display with low maintenance and energy requirements, addressing the limitations of existing technologies.
Implementation Method 1
Water from a reservoir running over a dam, in such a manner as to create a dispersion, is noted to produce aesthetically and acoustically pleasing effects, including a cooling effect as well as a change in humidity in areas nearby.
Implementation Method 2
The lights (890) are configured to shine on the water (728) in the fountain to sterilize the water.
Implementation Method 3
The structure (770) is coated with a photocatalytic coating (900). In operation, the lights (890) are configured to shine on the water (728) in the fountain to sterilize the water.
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A self-cleaning fountain includes: a structure (770) having two ends, defining a first flow way for a first fluid to flow along, wherein the structure (770) defines holes (772) for allowing a second fluid to flow through the holes (772); a pump system (814) configured to pump the first fluid to a first end of the structure (770); a distributer (904) located at the first end of the structure (770) and configured to spray the first fluid received from the pump system (814) onto the structure (770); a catch basin located at a second end of the structure (770) for collecting the first fluid that has moved along the flow way to the catch basin; a photocatalytic coating (900) on the structure (7770); and a light source (890) configured to direct light on the photocatalytic coating (900).