Induced Draft Fan Layout With Side-Mounted Motor Controller
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Solution Overview
Problem
Conventional direct current induced draft fans have a long axial length due to the stacking of the motor controller on the motor body, occupying excessive space and complicating load connection.
Innovation Solution
The motor controller is repositioned on the side of the motor body and fixed using a locking assembly, with the side wall extending towards the volute, allowing for a compact design by optimizing the use of space and reducing the axial length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the motor controller is stacked on the motor body, then the motor controller is fixed securely, but the axial length of the induced draft fan becomes long and occupies large space
Solution Approach 1:
The motor controller is repositioned from a stacked arrangement (axial direction) to a side-mounted arrangement (radial direction) on the motor body. This dimensional change in mounting orientation reduces the axial length of the overall structure while maintaining secure fixation through the locking assembly with bolts and nuts.
2Ease of operation
If the motor controller is stacked on the motor body, then the structure is simple, but the load connection becomes inconvenient
Solution Approach 1:
By mounting the motor controller on the side of the motor body rather than stacking it axially, the overall axial length is reduced. This dimensional reconfiguration improves accessibility for load connection while maintaining structural simplicity through the standardized locking assembly.
3Volume of moving object
If the side wall of the motor controller extends towards the volute, then the space utilization is optimized, but the motor controller structure becomes more complex
Solution Approach 1:
The motor controller structure is divided into modular components: the control box housing, the extending side wall portion, and the mounting interface with locking assembly. This segmentation allows the side wall to extend towards the volute for optimized space utilization while keeping each component relatively simple in design.
Data Source
AI summary
A direct current induced draft fan includes: a volute, a wind wheel, a motor, and a locking assembly. The motor includes a motor body and a motor controller. The motor is disposed on the top of the volute, and the wind wheel is disposed in the volute. The motor is configured to drive the wind wheel to rotate. The motor controller is disposed on one side of the motor body and is fixed on the motor body through the locking assembly. The side wall of the motor controller extends from the motor body towards the volute.