Blower
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Solution Overview
Problem
Current blowers lack effective methods to maximize air filter volume, reduce noise, and minimize airflow resistance caused by grilles, while also preventing user interference and air re-entry into the fan.
Innovation Solution
The blower design includes a longitudinal filter with biased axis, columns for support, and a bell mouth with a grille assembly that minimizes airflow resistance and noise, while preventing user interference and air re-entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grille is installed to prevent user interference with the fan, then safety is improved, but noise and air flow resistance increase
Solution Approach 1:
The grille is designed with an optimized mesh pattern that provides sufficient safety protection while allowing air to pass through with minimal resistance. The porous structure balances safety requirements with airflow needs, reducing both noise and resistance compared to solid grille designs.
2Reliability
If the filter volume is increased to improve air purification, then filtration performance is improved, but the space required in the blower increases
Solution Approach 1:
The filter is positioned within the lower body in a nested configuration that maximizes the use of available internal space. The filter housing is integrated into the blower structure, allowing the filter to be surrounded by other components efficiently, thereby increasing filter volume without proportionally increasing the overall blower size.
3Productivity
If the filter is positioned closer to the fan to maximize space utilization, then space efficiency is improved, but air flow resistance increases
Solution Approach 1:
The filter is positioned at the rear of the lower body, utilizing the longitudinal dimension of the blower housing. This rear positioning allows the filter to be close to the fan in terms of airflow path while maintaining sufficient physical separation in the housing structure, thereby reducing air flow resistance while maximizing space utilization.
4Volume of stationary object
If the lower body is extended to increase filter installation space, then filter volume is improved, but the overall blower size increases
Solution Approach 1:
The lower body is extended specifically in the region where the filter is installed, while other portions of the blower maintain compact dimensions. This localized extension provides additional filter installation space without proportionally increasing the overall blower size, maintaining a compact form factor while accommodating a larger filter.
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 filter volume, reduces noise and airflow resistance, and effectively blocks user interference and air re-entry, improving overall blower performance.
Implementation Method 1
a fan disposed inside the lower body and causing a flow of air
Implementation Method 2
a filter disposed inside the lower body between the suction hole and the fan in a longitudinal direction of the lower body
Data Source
AI summary
A blower may include a body or case having a suction hole through which air passes, a fan provided inside the body and causing a flow of air, and a filter provided inside the body. The filter may be positioned upstream of the fan and extend in a longitudinal direction of the body. A longitudinal axis of the filter may be shifted or displaced with respect to a longitudinal axis of the body.