Personal Air Cooler with Wick-Based Misting to Reduce Complexity

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Solution Overview

Problem

Conventional air coolers with liquid sprayers are complex and costly due to the use of atomizers or pumps, which complicate the design and increase weight, making them inconvenient for users.

Innovation Solution

A personal air cooler design that incorporates wicking cylinders to absorb and dispense liquid as mist, eliminating the need for atomizers or pumps, thereby simplifying the structure and reducing weight while providing a gentle and cost-effective cooling experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If atomizers or pump means are used to generate mist, then cooling effectiveness is improved, but device complexity and weight increase

Engineering Contradiction:
Improvecooling effectivenessVSAvoidstructural complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates the complex atomizer or pump means from the system, replacing them with a simple wick-based liquid delivery mechanism. The wick material naturally absorbs and transports liquid through capillary action, removing the need for mechanical pumping or atomizing components while maintaining mist generation capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The wick material performs the liquid transport function autonomously through capillary action, without requiring external power sources or mechanical actuation. The system self-regulates liquid flow from the reservoir to the evaporation surface, eliminating the need for controlled pumping mechanisms.

Inventive Principle:
Principle #25Self-service

2Temperature

If atomizers or pump means are used to generate mist, then cooling effectiveness is improved, but manufacturing cost increases

Engineering Contradiction:
Improvecooling effectivenessVSAvoidmanufacturing cost
Core Design Contradiction:
TemperatureVSEase of manufacture

Solution Approach 1:

The patent replaces expensive mechanical components (atomizers, pumps) with inexpensive wick material that can be easily manufactured and replaced. The wick serves as a low-cost, simple liquid transport medium that eliminates the need for complex mechanical assemblies, significantly reducing manufacturing costs.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent substitutes mechanical pumping and atomizing systems with a passive capillary action-based liquid delivery system. This replacement eliminates complex mechanical components, reducing both manufacturing complexity and cost while maintaining the essential function of liquid transport for evaporation cooling.

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

3Quantity of substance

If atomizers or pump means are used to generate mist, then mist generation capability is improved, but user convenience deteriorates

Engineering Contradiction:
Improvemist generationVSAvoiduser convenience
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The wick-based system autonomously manages liquid flow and mist generation without requiring user intervention for pumping or atomizer control. The capillary action automatically regulates liquid delivery to the evaporation surface, providing hands-free operation and improving user convenience.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

By removing the heavy and complex pump/atomizer assembly, the patent significantly reduces device weight, making the cooling system more portable and easier to carry. The simplified wick-based mechanism maintains mist generation capability while dramatically improving ergonomics and user convenience.

Inventive Principle:
Principle #2Taking out (Extraction)

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 air cooler effectively mixes air flow with mist to enhance cooling, is lightweight, and cost-effective, addressing the complexity and weight issues of traditional designs.

Implementation Method 1

a first wicking cylinder (64) at least partially coupled to the first mister (52) and configured to supply liquid to the first mister (52) for dispensing the mist

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

Each of the first and second misters (52, 53) dispense (or spray) mist into an air flow from the fan (30) when the air cooler (10) is in operation

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP4257886B1Personal air cooler
Publication Date: 2024.09.18 ONTEL PRODUCTS CORP
  • EP4257886B1 patent drawingFigure 1
  • EP4257886B1 patent drawingFigure 2
  • EP4257886B1 patent drawingFigure 3

AI summary

An air cooler includes a body having a top portion, a bottom portion, and a middle portion situated between the top and bottom portions. The air cooler further includes a fan disposed in the top portion of the body. The fan includes a fan hub and a plurality of fan blades centrally attached to the fan hub. The air cooler also includes a first mister disposed at a first location within the body. The first location is in front of the plurality of fan blades in the top portion of the body. The air cooler further includes a second mister disposed at a second location within the body. The second location is in front of the plurality of fan blades in the top portion of the body and different from the first location.