Blower Housing Pre-Intake Structure for Low-Turbulence Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing blowers have increased component count and assembly steps due to detachable inlet covers with grilles, leading to higher material and assembly costs.
Innovation Solution
A blower design with a housing featuring an air inlet and pre-intake region located axially behind the air inlet, integrated flow guide portions, and a substantially closed expansion wall configuration to improve air intake efficiency without additional covers, reducing noise and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a detachable inlet cover with a grille is installed at the air inlet, then dust entry is prevented, but the number of components and assembly steps increases
Solution Approach 1:
The inlet cover and grille are merged into a single integrated component that is detachably mounted on the housing. This combination reduces the total number of separate parts while maintaining the dust prevention function, as the grille is now part of the cover structure rather than a separate element.
Solution Approach 2:
The inlet cover is designed as a detachable component separated from the main housing body. This segmentation allows the cover with integrated grille to be independently assembled and disassembled, simplifying the overall structure while maintaining protective function and reducing assembly complexity compared to having separate cover and grille parts.
2Object-affected harmful factors
If a detachable inlet cover with a grille is installed at the air inlet, then dust entry is prevented, but assembly costs increase
Solution Approach 1:
By integrating the grille into the inlet cover as a single component, the manufacturing process is simplified. Instead of producing separate cover and grille parts requiring multiple assembly operations, the merged design reduces material usage and assembly steps, directly lowering production and assembly costs while maintaining dust prevention capability.
3Productivity
If the housing includes a pre-intake region located on two sides of the mounting portion, then air intake efficiency is improved, but the housing structure becomes more complex
Solution Approach 1:
The pre-intake region is positioned laterally on two sides of the mounting portion rather than only at the front, utilizing the transverse dimension to increase air intake area. This dimensional expansion allows more air to enter the housing from multiple directions, improving intake efficiency without significantly increasing overall structural complexity.
Solution Approach 2:
The pre-intake region is localized to specific areas on two sides of the mounting portion, concentrating air intake functionality where most needed. This localized design improves air intake efficiency at critical locations without requiring complex modifications to the entire housing structure, maintaining simplicity while enhancing performance.
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
Enhances air intake efficiency while minimizing turbulence and noise, reducing component count and assembly complexity, thereby lowering material and assembly costs.
Implementation Method 1
the fan rotates to generate negative pressure within the housing, drawing external air into the housing through an air inlet of the housing
Implementation Method 2
Enhances air intake efficiency while minimizing turbulence and noise
Data Source
AI summary
A blower includes a housing extending along an axial direction, a battery pack detachably connected to the housing, a drive assembly at least partially housed within the housing, and a blow pipe assembly connected to the housing. The housing includes a connection portion connected to the blow pipe assembly, a main body portion connected to a rear end of the connection portion, and a mounting portion connected to the main body portion. The main body portion includes an air inlet fluidly communicated with the external environment along the axial direction and a pre-intake region located axially behind the air inlet. Provision of an air inlet opening axially rearward and a pre-intake region located axially behind the air inlet can improve the air intake efficiency.