Series Axial Blower with Rigid Support Plate
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Solution Overview
Problem
Conventional blowers with axial fans connected in series face interference issues due to the movement of structural components, which can lead to reduced efficiency and a shorter lifespan, as the airflow from the first axial fan pushes the honeycomb structure into the intake port of the second axial fan, potentially interfering with its impeller.
Innovation Solution
A blower configuration that includes a first axial fan, a second axial fan, a lattice-shaped current plate with hollow cells, and a holder with a support portion that has higher rigidity than the current plate, allowing the airflow to be rectified while preventing the current plate from interfering with the second axial fan's components, thereby enhancing air blowing efficiency and extending the blower's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a honeycomb structure is disposed between the exhaust port of the first axial fan and the intake port of the second axial fan to rectify airflow, then airflow rectification is improved, but the structure may move into the intake port of the second axial fan and interfere with the impeller
Solution Approach 1:
The support portion is positioned upstream of the current plate, preventing the current plate from moving into the second axial fan before interference can occur. This preliminary positioning action resolves the contradiction by maintaining both airflow rectification and structural stability.
Solution Approach 2:
The support portion acts as an intermediary element between the first axial fan and the current plate, providing mechanical support and preventing the current plate from interfering with the second axial fan while allowing airflow to pass through.
2Productivity
If axial fans are connected in series to increase air blowing amount, then productivity is improved, but structural components may interfere with each other
Solution Approach 1:
The support portion serves as a mediator between the two axial fans, preventing structural interference while maintaining the series connection configuration that enables increased air blowing amount.
Solution Approach 2:
By providing support upstream of the current plate, the system prevents harmful structural interference before it can occur, allowing the series fan configuration to operate at full productivity potential.
Data Source
AI summary
A blower includes a first axial fan, a second axial fan, a first current plate, and a holder. The second axial fan is located on one side in the axial direction with respect to the first axial fan. In the first current plate, first hollow cells partitioned by a lattice-shaped first partition wall and penetrating in the axial direction are two-dimensionally arranged. The holder holds the first current plate. The first axial fan is connected in series with the second axial fan in the axial direction via the first current plate and the holder. The holder includes a support portion that includes opening portions opened in the axial direction and is located on one side in the axial direction of the first current plate. Rigidity of the support portion is higher than rigidity of the first current plate.