Closed-Cell Silicone Foam Brush for Waterless Solar Panel Cleaning
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Solution Overview
Problem
Existing cleaning brushes for solar panels are inefficient in maintaining the light transmission characteristics and can damage the anti-reflective coating due to dirt and debris accumulation, and require the use of water and soap for cleaning.
Innovation Solution
A method using a brush with closed-cell silicone foam rubber sheets attached to a core member, which moves in a repeating pattern to perform cleaning, buffing, or polishing actions on solar panels without water, utilizing the lubricating effect of the silicone foam to reduce wear and improve light transmission by generating a force through sliding contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If typical synthetic foam materials are used for cleaning solar panels, then water absorption is reduced and dirt resistance is improved, but cleaning performance is insufficient
Solution Approach 1:
The patent changes the material parameters by using closed-cell foam structure with specific cell sizes (0.5-5mm) and material composition (ethylene-vinyl acetate copolymer with 18-40% vinyl acetate content), transforming the cleaning mechanism from abrasive to lubricating action that reduces surface damage while maintaining cleaning effectiveness
Solution Approach 2:
The invention uses composite material structure combining closed-cell foam core with optional fabric or plastic sheet layers, creating a multi-layer composite that provides both mechanical durability and gentle cleaning action, resolving the contradiction between cleaning performance and surface protection
2Productivity
If conventional cleaning methods with water and soap are used, then cleaning effectiveness is achieved, but water consumption increases and environmental impact worsens
Solution Approach 1:
The patent extracts and eliminates the water and soap components from the cleaning system, using only the mechanical action of the closed-cell foam brush to remove dirt through adhesion and abrasion, achieving dry cleaning that consumes no water and produces no chemical waste
Solution Approach 2:
The closed-cell foam material provides self-lubrication through its inherent properties, eliminating the need for external lubricants or water, and the brush design allows self-cleaning by shedding accumulated dirt, maintaining continuous cleaning effectiveness without additional substances
3Productivity
If abrasive cleaning materials are used to remove dirt, then cleaning power is improved, but wear on the solar panel surface increases
Solution Approach 1:
The patent converts the potentially harmful abrasive action into a beneficial lubricating action by using closed-cell foam that traps and distributes lubricant, transforming the cleaning mechanism from surface-damaging abrasion to controlled adhesion and gentle removal that protects the anti-reflective coating
Solution Approach 2:
The closed-cell porous foam structure absorbs and retains lubricant within its cells, providing sustained lubrication during cleaning operation, which reduces direct contact between abrasive dirt particles and the solar panel surface, minimizing wear while maintaining dirt removal capability
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 method effectively cleans solar panels without water, reduces wear on both the brush and the panel, improves light transmission by breaking up the uniformity of the surface, and increases the efficiency of solar cell performance by exposing the panels to simulated cleaning cycles.
Implementation Method 1
These synthetic foam materials provide a benefit over non-woven materials in that they don't absorb water. In addition, these synthetic foam materials also resist dirt and debris accumulating and remaining in the material.
Implementation Method 2
The sliding contact between the at least one sheet of material and the surface occurs under a pressure and relative velocity sufficient to generate a force that results in at least one of a cleaning, buffing, and polishing
Data Source
AI summary
A brush suitable for performing at least one of a cleaning, buffing, and polishing action on a surface without requiring water comprises a core member, the core member having a central axis surrounded by a plurality of C-channel grooves and a plurality of sheets of material, each sheet of material comprised of closed-cell silicone foam rubber, being folded to define a double-sided flap, and secured to a respective one of the plurality of C-channel grooves. The sheet of material is secured to the core member to permit relative movement of the double-sided flap with respect to the surface in at least a first direction, and the relative movement of the double-sided flap produces at least one of the cleaning, buffing and/or polishing action on the surface without requiring water.