Head-Worn Fan Assembly with Multi-Port Airflow Control

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Solution Overview

Problem

Conventional body cooling devices, such as hat-mounted fans, fail to provide effective direct airflow to multiple locations on the wearer and are not always portable or efficient in hot and humid conditions, posing risks of heat-related injuries and discomfort.

Innovation Solution

A head-worn cooling body fan assembly with a motorized fan housed in a lightweight, adjustable shell that directs airflow through multiple ports to provide convective cooling, combined with a control unit for regulating fan operation and power source compatibility with portable tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a hat-mounted fan is used to provide cooling airflow, then some cooling effect is achieved, but the airflow does not reach multiple locations on the wearer's body effectively

Engineering Contradiction:
Improvecooling effectivenessVSAvoidairflow coverage
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The fan assembly is divided into multiple independent fan units, each capable of generating airflow directed at different locations on the wearer's body. This segmentation allows each fan to independently cool specific areas, thereby achieving comprehensive coverage across multiple body locations while maintaining ease of operation through individual control of each fan unit.

Inventive Principle:
Principle #1Segmentation

2Object-affected harmful factors

If workers cover their bodies with hats and cloths to shade from the sun, then shade and airflow are provided, but portability and efficiency in hot and humid conditions are reduced

Engineering Contradiction:
Improvesun exposure protectionVSAvoidportability
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The fan assembly integrates multiple functions into a single portable device: it provides shade through its structural design, generates cooling airflow through integrated fans, and can be worn on the head or body. This multi-functionality eliminates the need for separate cooling and shading items, thereby improving portability and efficiency while maintaining protection from sun exposure and cooling effectiveness in hot and humid conditions.

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

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 assembly effectively provides portable, adjustable, and efficient convective cooling across the head and body, minimizing heat and humidity effects while maintaining shade and airflow, thus reducing the risk of heat-related injuries.

Implementation Method 1

directs airflow through multiple ports to provide convective cooling

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS9877532B2Body fan assembly
Publication Date: 2018.01.30 RAIFFEISEN CHARLES J
  • US9877532B2 patent drawing
  • US9877532B2 patent drawing
  • US9877532B2 patent drawing

AI summary

The present application includes an assembly having a head unit and a control unit. The head unit is worn on the head of a worker and is configured to induce a convective cooling effect upon the worker. The control unit is in communication with the head unit to permit the worker to operate and adjust the various functions of the head unit. The head unit includes a motorized fan which pulls air into a central cavity within the head unit and blows it through one or more ports. The ports provide multiple directions for routing the airflow. An optional sleeve may be used in combination with one of the ports to route airflow away from the head of the worker.