Foaming Evaporator Coil Cleaner Composition for Fast, Safe Cleaning

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Solution Overview

Problem

Existing cleaning products for evaporator coils in climate control systems are not effective enough in cleaning quickly and may damage system components.

Innovation Solution

A foaming cleaner composition comprising water, solvent, surfactant, and a pH and corrosion control agent, specifically designed to form a foam that effectively cleans the evaporator coil without damaging components, and dissipates within a short time frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If existing cleaning products are used on evaporator coils, then cleaning action is provided, but cleaning effectiveness and speed are insufficient

Engineering Contradiction:
Improvecleaning speedVSAvoidcleaning effectiveness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent changes the physical state parameter of the cleaning composition from liquid to foam. This foam formulation allows the cleaning agent to adhere better to the evaporator coil surfaces, maintain contact for extended periods, and penetrate dirty areas more effectively, thereby improving both cleaning speed and effectiveness simultaneously

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The cleaning composition is formulated as a composite foam system combining cleaning agents, surfactants, and foam-stabilizing components. This composite structure enables the product to deliver aggressive cleaning action while maintaining controlled dissipation, resolving the contradiction between cleaning effectiveness and operational safety

Inventive Principle:
Principle #40Composite materials

2Reliability

If strong cleaning agents are used to improve cleaning effectiveness, then cleaning performance increases, but risk of damage to system components increases

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidcomponent damage risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The foam formulation is designed with dynamic properties that allow it to maintain its structure and cleaning action for a controlled period, then naturally dissipate and drain away. This dynamic behavior ensures aggressive cleaning when needed while automatically limiting exposure time to prevent component damage

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent controls the pH and chemical composition parameters of the foam to achieve optimal cleaning power while incorporating corrosion inhibitors and pH buffers that protect aluminum and other sensitive components, resolving the contradiction between cleaning strength and component safety

Inventive Principle:
Principle #35Parameter changes

3Reliability

If cleaning composition remains on evaporator coil for extended period, then cleaning effectiveness improves, but dissipation time increases

Engineering Contradiction:
Improvecleaning effectivenessVSAvoiddissipation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The foam is designed to undergo periodic transformation: initially maintaining a stable foam structure for effective cleaning, then transitioning to breakdown and dissipation phase. This periodic action provides sustained cleaning followed by automatic removal, optimizing both cleaning effectiveness and time efficiency

Inventive Principle:
Principle #19Periodic action

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 foaming cleaner efficiently removes dirt and odors from the evaporator coil, minimizing the risk of damage to components and ensuring quick dissipation, thus providing effective and safe cleaning.

Implementation Method 1

a surfactant about 0.5 wt. % to about 2.5 wt. %

Methodology Applied
Scientific EffectSurface tension reduction: Surfactant

Implementation Method 2

a pH and corrosion control agent comprising 30% ammonia solution about 1.25 wt. % to about 1.75 wt. %

Methodology Applied
Scientific EffectpH control and corrosion inhibition: Chemical Bonding

Implementation Method 3

a solvent about 20 wt. % to about 50 wt. %

Methodology Applied
Scientific EffectSolvation: Solvation

Data Source

PatentUS12044489B2Foaming evaporator coil cleaner
Publication Date: 2024.07.23 VGP IPCO LLC
  • US12044489B2 patent drawing
  • US12044489B2 patent drawing
  • US12044489B2 patent drawing

AI summary

A foaming cleaner includes a composition that includes water about 50 wt. % to about 60 wt. %, a solvent about 20 wt. % to about 50 wt. %, a surfactant about 0.5 wt. % to about 2.5 wt. %, and a pH and corrosion control agent comprising 30% ammonia solution about 1.25 wt. % to about 1.75 wt. %. The composition is configured to form a foam for cleaning an evaporator coil.