Water-Based Automatic Solar Panel Cleaning Using Timed Solenoid Valves

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Solution Overview

Problem

Existing solar panel cleaning systems are cumbersome, dangerous, and inefficient, often requiring manual labor and chemical use, with complex structures that do not effectively address dust accumulation, leading to reduced efficiency and shortened lifespan.

Innovation Solution

A water-based automatic solar panel cleaning system with solenoid valves, a water tank, pump, and microcontroller-controlled spraying mechanisms that operate on a timer, using minimal water and pressure to clean panels automatically.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual cleaning methods are used for solar panels, then cleaning can be performed, but it is burdensome and dangerous requiring personnel to climb to rooftops

Engineering Contradiction:
Improvecleaning operationVSAvoidsafety risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system enables self-service cleaning through automatic timer operation and solar-powered pumping, eliminating the need for manual intervention. The solar panels power the pump motor which draws water from the tank and sprays it onto the panels through solenoid-controlled nozzles, creating a self-sustaining cleaning system.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical cleaning with an automated system using electric solenoid valves controlled by a timer circuit. The microcontroller-based timing mechanism automatically activates specific solenoid valves at predetermined intervals to spray water on different sections of the solar panels.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If individual solar panels are cleaned manually, then each panel can be cleaned, but it consumes too much time for large quantities of panels

Engineering Contradiction:
Improvecleaning speedVSAvoidcleaning time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The cleaning system divides the solar panel array into multiple sections, with each section served by dedicated solenoid valves (first solenoid valve for first section, second solenoid valve for second section, etc.). The timer circuit sequentially activates each valve to spray water on different sections, enabling systematic coverage of large panel areas.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The single water tank and pump system serves multiple solar panel sections through the network of solenoid valves and piping. One pump unit can service numerous panels by directing water flow to different sections through electronically controlled valves, making the system scalable to large installations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Reliability

If water-based cleaning is used, then effective cleaning is achieved, but water consumption increases

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidwater consumption
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The system uses periodic spray action controlled by the timer circuit, which activates solenoid valves for specific time intervals rather than continuous spraying. This allows water to be applied in controlled bursts, sufficient for cleaning while minimizing overall consumption. The timer can be programmed to spray each section for optimal duration.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system utilizes hydraulic pressure from the pump to deliver water through narrow spray nozzles, creating high-velocity water jets that effectively remove dust and debris with minimal water volume. The solenoid valves provide precise hydraulic control, opening and closing to regulate water flow to different sections.

Inventive Principle:
Principle #29Pneumatics and hydraulics

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, automated cleaning with reduced water and power consumption, extending panel lifespan and improving energy production while being cost-effective and safe.

Implementation Method 1

a pump (4) and a valve (5). The second end of the first solenoid valve (1) is connected to a first outlet pipe (6)

Methodology Applied
Scientific EffectPump: Pump

Implementation Method 2

The first end of the first solenoid valve (1) is connected to a first end of a main pipe (2)

Methodology Applied
Scientific EffectSolenoid: Solenoid

Data Source

PatentUS12456945B2Water based automatic solar panel cleaning system and method thereof
Publication Date: 2025.10.28 WEISMACHER ECO PTE LTD
  • US12456945B2 patent drawing
  • US12456945B2 patent drawing
  • US12456945B2 patent drawing

AI summary

The present invention relates to a water based automatic solar panel cleaning system and method thereof. It describes an improved solar panel cleaning system which cleans the solar panels in fully automatic and economical way. The system comprises plurality solenoid valve (1) is connected to a water tank (3) through a main pipe (2), a pump (4) and a valve (5). Second end of the solenoid valves (1) are connected to a respective outlet pipe (6). The outlet pipe (6) is extended to connect with a means for spraying it will act as water spraying. The system includes a step down transformer, micro controller and timer for controlling the operation of the solenoid valves (1) so that the solenoid valves get ON and OFF at predetermined time interval. The solar panel gets cleaned with predetermined time interval through the means for spraying of water automatically.