Ceiling Fan Blade Air Guiding Structures for Rotational Efficiency

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Solution Overview

Problem

Conventional ceiling fan blades experience reduced rotational speed due to friction with air, leading to inefficient airflow.

Innovation Solution

A ceiling fan blade design featuring a main body with a windward part and air guiding structures, where the distance between the air guiding structures and the main body is 0.2 to 0.4 times the width of the main body, enhancing airflow by generating small turbulent flows and increasing wind force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If conventional ceiling fan blades rotate continuously, then they can move air, but friction with air reduces rotational speed

Engineering Contradiction:
Improverotational speedVSAvoidfriction with air
Core Design Contradiction:
SpeedVSLoss of energy

Solution Approach 1:

The blade is segmented into a main body and multiple air guiding structures that are spaced apart from each other and from the main body. This segmentation allows air to pass through the gaps between structures, reducing friction and improving rotational speed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Air guiding structures are positioned at specific locations on the blade surface with specific spacing (0.2 to 0.4 times the width of the main body) to create localized airflow guidance. This local modification optimizes air flow characteristics without requiring complete structural redesign.

Inventive Principle:
Principle #3Local quality

2Productivity

If air guiding structures are added to the blade, then airflow is improved, but structural complexity increases

Engineering Contradiction:
Improveairflow generationVSAvoidstructural complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

Instead of redesigning the entire blade structure, air guiding structures are added as localized features on the blade surface. These structures are simple geometric forms positioned at optimized locations, providing airflow benefits without complex mechanisms.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The air guiding structures are designed to work dynamically with the rotating blade, utilizing the rotational motion to create beneficial airflow patterns. The structures passively guide air without requiring active control or complex mechanisms.

Inventive Principle:
Principle #15Dynamics

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 design results in smoother airflow and increased airflow generation, improving the rotational efficiency and wind power of the ceiling fan blades.

Implementation Method 1

the ceiling fan blade of the present disclosure can provide a smoother air flow, and an airflow generated thereby can be increased

Methodology Applied
Scientific EffectTurbulence: Turbulence

Data Source

PatentUS20230042531A1Ceiling fan blade
Publication Date: 2023.02.09 HOTECK INC
  • US20230042531A1 patent drawing
  • US20230042531A1 patent drawing
  • US20230042531A1 patent drawing

AI summary

A ceiling fan blade is provided. The ceiling fan blade is configured to be mounted on a rotating base, and includes a main body and a blade holder connected to the main body. The blade holder is configured to be mounted on the rotating base. The main body includes a windward part arranged adjacent to a side of the main body and a plurality of air guiding structures arranged adjacent to the windward part. Each of the air guiding structures and the side of the main body that is adjacent to the windward part is 0.2 to 0.4 times of a width of the main body.