Axial Fan Blower Elbow Layout for Lower Noise and Power Use
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hand-held blowers suffer from high noise pollution, high energy consumption, and low performance due to their design and components, making them cumbersome and harmful to users.
Innovation Solution
A hand-held blower with an axial fan and a downward-oriented suction pipe elbow, a converging suction pipe section, and a smooth inner surface to reduce noise and enhance airflow, along with an integrated treatment product inlet for plant protection, powered by a battery or worn on the back for convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a centrifugal fan is used in the blower, then the blower can achieve air projection function, but the noise level increases significantly and energy consumption rises
Solution Approach 1:
The patent replaces the centrifugal fan mechanical system with an axial fan system. The axial fan has blades arranged axially along the rotation axis, creating a different airflow mechanism that reduces noise and energy consumption while maintaining the air projection function. This substitution of mechanical configuration directly addresses the harmful effects of the centrifugal fan design.
2Object-generated harmful factors
If the suction pipe is oriented horizontally or upward, then the device structure is simpler, but noise directs toward the user and performance is reduced
Solution Approach 1:
The patent introduces an asymmetric orientation of the suction pipe relative to the axial fan. The suction pipe is positioned at an angle to the fan axis, specifically oriented to direct noise away from the user while maintaining optimal airflow intake. This asymmetric configuration resolves the contradiction between user protection from noise and device performance.
Solution Approach 2:
The patent changes the spatial dimension of the suction pipe orientation from horizontal/vertical alignment to an angular configuration in three-dimensional space. By positioning the suction pipe at a specific angle to the fan axis, the design creates a new spatial arrangement that simultaneously achieves noise redirection and performance optimization.
3Productivity
If the suction pipe has a straight configuration, then manufacturing is simpler, but airflow performance and noise reduction are compromised
Solution Approach 1:
The patent incorporates curved or angled sections in the suction pipe rather than straight configurations. The elbow portion of the suction pipe is designed with specific curvature to optimize airflow into the axial fan while reducing turbulence and noise. This curved geometry improves performance while remaining manufacturable through standard piping techniques.
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
Significantly reduces noise pollution, optimizes performance, and makes the blower more compact, user-friendly, and environmentally friendly while minimizing energy consumption.
Implementation Method 1
said fan is an axial fan and in that said suction pipe features, upstream of the axial fan, an elbow
Data Source
AI summary
A hand-held electric blower includes an air-guiding pipe comprising a proximal portion or suction pipe provided with an air inlet, a distal air outlet portion or exhaust nozzle, and a fan. The blower is characterized in that the fan consists of an axial fan, and in that the suction pipe has, upstream from the axial fan, an elbow, the proximal end of which defines the air inlet and is directed downward in terms of a working position of the device, in which the operating handle of the blower is positioned above said elbow.