Fan Spacer System for Customizable Airflow in Work Vehicles
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Solution Overview
Problem
Existing fan housings for agricultural equipment are costly to manufacture and limited in variety due to complex scroll shapes, leading to compromises in performance and availability of sizes and configurations.
Innovation Solution
A modular fan spacer system that modifies fan housing dimensions by adding spacers to adjust the width of the fan housing, allowing for customizable airflow characteristics without requiring new tooling, enabling a single common housing to accommodate various fan sizes and performance levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fan housing dimensions are increased to achieve higher flow rates and pressures, then fan performance is improved, but manufacturing complexity and cost increase due to complex scroll shapes requiring new tooling
Solution Approach 1:
The fan housing is divided into a base housing and an adjustable spacer component. The spacer is a separate segment that can be attached to the base housing to increase the housing width and internal volume, thereby increasing flow rate without requiring a completely new housing design or tooling for each size increment.
Solution Approach 2:
The spacer width is made adjustable through interchangeable components or adjustable mechanisms, allowing the housing dimensions to be dynamically modified to match different airflow requirements. This enables a single base housing to serve multiple performance levels.
2Productivity
If fan housing dimensions are increased to achieve higher flow rates and pressures, then fan performance is improved, but manufacturing complexity increases due to complex scroll shapes
Solution Approach 1:
The complex housing is segmented into a standard base housing with a simpler geometry and an adjustable spacer that provides the additional volume. This segmentation allows the base housing to have a simplified design that is easier to manufacture, while the spacer provides the necessary dimensional adjustment.
Solution Approach 2:
The base housing is designed as a universal component that can accommodate multiple fan sizes and performance levels by combining it with different spacer configurations. This multi-functionality reduces the need for multiple complex housing designs.
3Adaptability or versatility
If custom fan sizes and configurations are produced to meet specific performance requirements, then performance adaptability is improved, but manufacturing cost increases due to required tooling modifications
Solution Approach 1:
The system uses adjustable and interchangeable spacer components that can be configured to provide different housing widths and volumes. This adjustability allows custom performance specifications to be met without requiring custom tooling, as the same base housing and spacer components can be reconfigured for different applications.
Solution Approach 2:
Instead of changing the physical geometry of the housing through custom tooling, the system changes the effective parameters (width, volume) by adding or removing spacer components. This allows performance parameter customization while maintaining the same manufacturing tooling for the base housing.
4Ease of manufacture
If a limited variety of fan sizes and configurations is offered to reduce manufacturing complexity, then manufacturing cost is reduced, but performance adaptability decreases leading to compromises
Solution Approach 1:
The fan housing system is segmented into a standard base housing and modular spacer components. This segmentation allows a single base housing design to be combined with different spacer configurations to create multiple effective fan sizes and performance levels, thus maintaining manufacturing simplicity while expanding performance options.
Solution Approach 2:
The spacer components are designed to nest with or attach to the base housing, creating a nested structure that provides multiple size configurations from a single base component. This nesting approach allows various fan outputs to be offered using a common housing family.
Data Source
AI summary
An airflow system that has a fan spacer within a fan assembly is provided for use with equipment such as work vehicles, which may include agricultural implements or other agricultural equipment. The fan spacer influences a width dimension of a fan housing interior and airflow characteristics of the fan assembly, such as output pressure and flow rate, to optimize fan performance for a particular implementation. In this way, the fan spacer allows for highly customizable fan performances by using housing spacers to modify fan housing dimensions and provide performance characteristics that correspond to what is needed for particular implementations while using common fan housing segments.