Gravity-Fed Brush Roller Liquid Distribution to Prevent Surface Streaks

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Solution Overview

Problem

Conventional surface maintenance machines often leave excess cleaning liquid on surfaces, leading to uneven cleaning, streaks, and increased maintenance costs due to the use of pumps and spray jets.

Innovation Solution

A gravity-fed cleaning liquid distribution system using counter-rotating brush rollers, a manifold, an agitation blade, and a baffle to break cleaning liquid into fine droplets and distribute them evenly across the surface without pumps or spray jets, preventing drips and streaks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If pumps or spray jets are used to convey cleaning liquid, then the cleaning liquid can be delivered to the surface, but the device complexity and maintenance costs increase

Engineering Contradiction:
Improvecleaning liquid deliveryVSAvoidsystem complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent removes pumps and spray jets from the system, extracting the complex mechanical delivery components while retaining the essential function of cleaning liquid conveyance through gravity feed and brush roller distribution

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The brush rollers serve dual functions: they clean the surface while simultaneously distributing the cleaning liquid through their rotation and bristle action, eliminating the need for separate delivery mechanisms

Inventive Principle:
Principle #25Self-service

2Quantity of substance

If excess cleaning liquid is applied to the surface, then the surface is wetted, but fungus and bacteria growth is promoted

Engineering Contradiction:
Improvecleaning liquid applicationVSAvoidfungus and bacteria growth
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The brush rollers distribute cleaning liquid locally and uniformly across the surface through their bristle contact, preventing excessive liquid accumulation in any one area while ensuring adequate coverage

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system applies just enough cleaning liquid through the brush rollers to achieve effective cleaning without over-application, using the mechanical action of the brushes to distribute the liquid partially and uniformly rather than spraying excessive amounts

Inventive Principle:
Principle #16Partial or excessive action

3Productivity

If cleaning liquid is applied unevenly, then the surface is cleaned, but streaks appear on the surface

Engineering Contradiction:
Improvecleaning coverageVSAvoidcleaning uniformity
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

Each brush roller distributes cleaning liquid uniformly through its bristles across the width it covers, and the multiple rollers work together to achieve even distribution across the entire surface width

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The cleaning width is divided into multiple zones covered by separate brush rollers, with each roller segment distributing liquid uniformly in its zone, resulting in overall even distribution across the complete surface

Inventive Principle:
Principle #1Segmentation

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

This solution reduces maintenance costs, improves cleaning efficiency, and prevents over-wetting, promoting even cleaning and reducing the risk of fungus and bacteria growth.

Implementation Method 1

an agitation blade extending across substantially the entire width of the shroud, the agitation blade attached to the shroud adjacent the manifold on a side proximal the rear counter-rotating brush roller and extending underneath the manifold to contact the front counter-rotating brush roller

Methodology Applied
Scientific EffectMechanical agitation: Vibration

Implementation Method 2

a tank positioned above the shroud and in fluid communication with the manifold such that gravity pulls cleaning liquid into the manifold from the tank

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS9357895B2Gravity feed solution distribution system
Publication Date: 2016.06.07 KARCHER NORTH AMERICA INC
  • US9357895B2 patent drawing
  • US9357895B2 patent drawing
  • US9357895B2 patent drawing

AI summary

A gravity feed solution distribution system for use with surface maintenance and conditioning machines includes front and rear counter-rotating brush rollers within a shroud, a manifold having delivery ports and disposed within the shroud above the counter-rotating brush rollers, an agitating blade extending from an inner surface of the shroud and underneath the manifold to contact the front counter-rotating brush roller, and a baffle extending downward from an inner surface of the shroud above the front counter-rotating brush roller to contact the front counter-rotating brush roller.