Axial Flow Blower Guide Member for Intake Efficiency
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Solution Overview
Problem
Conventional axial flow blowers with multiple suction openings suffer from intake loss due to air flow collisions and require large guide members, leading to increased size and reduced efficiency.
Innovation Solution
An axial flow blower design featuring a housing with multiple suction openings and an air blowing guide member positioned closer to the suction openings than the air blowing fan, which guides air introduced from these openings towards the fan, reducing collisions and improving intake efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple suction openings are provided to increase air intake, then air intake capability is improved, but air flow collision occurs causing intake loss
Solution Approach 1:
A guide member is introduced as an intermediary component between the multiple suction openings and the air blowing fan. This guide member includes guide surfaces that direct air flows from different suction openings along predetermined paths, preventing collision between air flows and reducing intake loss while maintaining improved air intake capability.
2Loss of energy
If a guide member is arranged to prevent air flow collision, then intake loss is reduced, but the guide member becomes significantly large increasing blower size
Solution Approach 1:
The guide member is segmented into multiple sections, each responsible for guiding air from specific suction openings. This segmentation allows the guide member to be more compact while still effectively directing all air flows without collision, reducing the overall size compared to a single large guide structure.
Solution Approach 2:
The guide surfaces are configured to utilize three-dimensional space efficiently, directing air flows in different spatial dimensions toward the air blowing fan. This dimensional approach allows compact arrangement of guide surfaces while maintaining effective air flow separation and guidance.
3Force
If guide surfaces are provided to direct air flow, then air blowing force is improved, but the air blowing passage becomes narrow reducing efficiency
Solution Approach 1:
The guide surfaces are strategically positioned and shaped to provide localized flow direction only where necessary, rather than constricting the entire air blowing passage. This allows air flows to be directed effectively for improved blowing force while maintaining sufficient passage width for high efficiency.
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 solution effectively suppresses intake loss and sound generation, allowing for improved airflow efficiency and a more compact design by directing air flows along the rotation axis of the air blowing fan, thus enhancing the overall performance of the blower.
Implementation Method 1
an air blowing guide member which guides air introduced from these openings toward the fan, reducing collisions and improving intake efficiency
Data Source
AI summary
Provided is an axial flow blower capable of improving an intake efficiency even when air is introduced from a plurality of suction openings. An axial flow blower includes a housing including an air blowing passage extending from a plurality of suction openings (lateral suction opening and lower suction opening) to an ejection opening, an electric motor, and an air blowing fan that blows air from the plurality of suction openings (lateral suction opening and lower suction opening) toward the ejection opening. An air blowing guide member is provided closer to the plurality of suction openings (lateral suction opening and lower suction opening) than to the air blowing fan, inside of the plurality of suction openings (lateral suction opening and lower suction opening). The air blowing guide member guides air introduced into the air blowing passage from the plurality of suction openings (lateral suction opening and lower suction opening) toward the air blowing fan.