Dual-Wind-Wheel Air Blower for Higher Air Volume

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Solution Overview

Problem

Existing air blowers with single-sided air inlets struggle to provide sufficient air volume in certain applications.

Innovation Solution

The air blower design incorporates a double-sided air supply structure with two wind wheels, a motor-driven rotating shaft, a support, and a partition plate to separate airflow paths, along with a handle and detachable extension device for enhanced airflow and usability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a single wind wheel with single-sided air inlet is used, then the device structure is simple, but the air volume is insufficient

Engineering Contradiction:

Improveair volumeVSAvoiddevice structure

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The single wind wheel is segmented into two separate wind wheels (first wind wheel and second wind wheel), each handling airflow from one side. This segmentation allows the device to process air from both sides simultaneously, doubling the air volume while keeping each individual wind wheel structure relatively simple.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The design transitions from single-sided air inlet to double-sided air inlet by adding the second wind wheel on the opposite side. This dimensional change from one side to two sides enables the device to draw air from both directions, significantly increasing the total air volume processed.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Productivity

If a double-sided air supply structure with two wind wheels is used, then the air volume is doubled, but the device complexity increases

Engineering Contradiction:

Improveair blowing cleaning effectVSAvoidstructure complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The two wind wheels are merged into a single integrated fan blade assembly structure, sharing a common motor and rotating shaft system. This merging approach allows the device to achieve double-sided air supply and doubled productivity while avoiding the complexity of two completely separate systems.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The common motor and rotating shaft serve both wind wheels simultaneously, making this subsystem universal for driving both first and second wind wheels. This multi-functionality reduces the number of separate components needed, thereby reducing overall device complexity while maintaining high productivity.

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 design doubles theoretical air volume and improves cleaning effectiveness by ensuring high-speed airflow through dual wind wheels and allows for convenient handling and adaptable outlet configurations.

Implementation Method 1

the first wind wheel and the second wind wheel are used for driving airflow to pass through the air inlet and the air outlet in sequence

Methodology Applied

Scientific EffectFluid dynamics:

Data Source

PatentUS12497975B2Air blower

Publication Date: 2025.12.16 SHI KAIHUI

AI summary

An air blower includes a shell, an air supply device, and a handle. The air supply device is designed as a double-sided air supply structure, and is provided with two wind wheels. The theoretical air volume can be doubled relative to the design of single-sided air inlet so that the air blowing cleaning effect of the complete machine is improved.