Interior Windshield Wiper With Water Vapor Cleaning for Fogged Glass

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Solution Overview

Problem

Existing windshield wipers only address external visibility issues, neglecting the internal fogging and dust accumulation on the inside of vehicle windshields, which impair driver visibility during rainy or humid conditions.

Innovation Solution

Integration of a water vapor generator within the windshield wipers, comprising a water tank, heater, and pump, to produce and disperse water vapor onto the interior windshield for effective cleaning by wiper arms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If traditional windshield wipers are used, then external visibility is improved, but internal fogging and dust accumulation on the inside of the windshield remains unaddressed

Engineering Contradiction:
ImprovevisibilityVSAvoidfunctionality
Core Design Contradiction:
Illumination intensityVSAdaptability or versatility

Solution Approach 1:

The windshield wiper system is enhanced with additional functions including a water vapor generator, heater, and pump to address internal fogging and dust accumulation. This multi-functional approach allows a single system to handle both external and internal windshield cleaning needs, improving versatility while maintaining visibility.

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

2Adaptability or versatility

If a water vapor generator is integrated into the windshield wiper system, then internal fog and dust removal capability is improved, but device complexity increases

Engineering Contradiction:
Improvecleaning capabilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The water vapor generator, heater, pump, and wiper system are merged into an integrated assembly where components share common structures and control systems. The water tank, heater, and pump are positioned within the wiper arm structure, combining multiple functions into a unified system that reduces overall complexity compared to separate systems.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If water is heated to generate vapor for cleaning, then cleaning effectiveness is improved, but energy consumption increases

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system utilizes phase transition of water from liquid to vapor through controlled heating. The heater converts electrical energy to thermal energy to vaporize water, and the phase change provides effective fog and dust removal through condensation on the windshield surface, achieving reliable cleaning with controlled energy input.

Inventive Principle:
Principle #36Phase transitions

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

Enhances visibility by effectively removing internal fog and dust from the windshield through horizontal, vertical, or circular wiping motions, improving driver visibility in adverse weather conditions.

Implementation Method 1

The water tank and heater are positioned within the wiper arm structure, with the heater heating water in the water tank to create water vapor

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

A pump propels the water vapor to the wiper blade through a conduit

Methodology Applied
Scientific EffectPumping: Pump

Implementation Method 3

The wiper blade disperses the water vapor onto the windshield through a series of apertures

Methodology Applied
Scientific EffectDispersion: Dispersion (of waves)

Data Source

PatentUS20250242783A1Interior windshield wiper with water vapor pump
Publication Date: 2025.07.31 KING FAISAL UNIV
  • US20250242783A1 patent drawing
  • US20250242783A1 patent drawing

AI summary

An interior windshield wiper system includes a water tank and a heater located within the water tank. The heater heats contents of the water tank. A conduit leads from the water tank to an interior surface of a vehicle. Apertures are located at an end of the conduit proximal to the interior surface, wherein the contents of the water tank travel though the conduit and apertures and onto the interior surface of the vehicle, such as a windshield. A wiper is located proximal to the interior surface to wipe the interior surface.