Removable Blower Tube with Stator Guide Members
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Solution Overview
Problem
Existing blowers, particularly handheld battery-powered models, face issues such as assembly and disassembly difficulties, size reduction, performance risks, sound quality, vibration, and user safety concerns.
Innovation Solution
The blower design includes a blower housing with a removably coupled tube, a stator to reduce airflow swirl, guide members for proper alignment, a damper material to reduce noise, and a grounding system for user safety, along with aerodynamic features to improve airflow and reduce vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blower tube is removably coupled to the blower housing, then ease of assembly and disassembly is improved, but connection reliability may deteriorate
Solution Approach 1:
The blower system is divided into separable components - the blower tube and blower housing - that can be removably coupled together. This segmentation allows users to easily assemble and disassemble the components for storage, transport, or maintenance while maintaining reliable operation when connected.
Solution Approach 2:
The blower tube includes pre-formed engagement features (such as ridges or lugs) that align with corresponding receptacles on the blower housing before final connection. This preliminary alignment ensures proper positioning and secure coupling when the tube is attached to the housing, preventing misalignment issues.
2Manufacturing precision
If guide members are added to engage the stator, then manufacturing precision and alignment are improved, but device complexity increases
Solution Approach 1:
The guide members are designed to automatically guide and position the stator during assembly without requiring external alignment tools or complex adjustment mechanisms. The stator's own features (such as engagement protrusions) interact with the guide members to achieve proper alignment self-serviceably.
Solution Approach 2:
The alignment function is extracted from the stator itself and implemented through separate guide members attached to the blower housing. This separation allows the guide members to be optimized purely for alignment purposes while the stator focuses on its primary function of reducing airflow swirl.
3Object-generated harmful factors
If damper material is used to reduce noise, then sound quality and noise reduction are improved, but weight and device size increase
Solution Approach 1:
Damper material is applied locally at specific noise-generating locations within the blower housing, such as around the airflow path or near the motor, rather than throughout the entire device. This targeted approach reduces noise effectively while minimizing the total amount of damper material required, thus limiting weight increase.
Solution Approach 2:
The damper material utilizes a porous structure that provides effective noise absorption and sound quality improvement with relatively low material density and mass. The porous configuration allows the material to dampen acoustic waves efficiently while maintaining lighter weight compared to solid damping materials.
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 enhances ease of assembly, reduces noise and vibration, improves airflow efficiency, and ensures user safety by minimizing electronic damage and shock risks.
Implementation Method 1
a stator to reduce airflow swirl
Implementation Method 2
at least one liner within the blower housing between the stator and the air outlet. The at least one liner is formed from a damper material
Data Source
AI summary
A blower is provided. The blower includes a blower housing defining an air inlet and an air outlet opposite the air inlet and a blower tube removably coupled to the air outlet of the blower housing. At least a portion of the blower housing and the blower tube define an airflow conduit. The blower housing includes a motor, a fan, a stator adjacent the fan, and a plurality of guide members. The plurality of guide members extends from an interior surface of the blower housing and are configured to engage the stator.