Flywheel Cooling Fan for Engine Power Generator
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Solution Overview
Problem
Conventional engine-driven power generators require multiple components and complex assembly processes due to separate cooling fans for the engine and power generation section, leading to increased weight, size, and assembly steps.
Innovation Solution
Integration of a single cooling fan on the flywheel positioned between the engine crankcase and power generation section, utilizing a combination of small-diameter and large-diameter cooling fans to cool both the engine and power generation section, reducing the need for separate fans and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate cooling fans are provided for the engine and power generation section, then cooling effectiveness is maintained, but weight and size of the power generator increase
Solution Approach 1:
The patent combines the engine cooling fan and power generation section cooling fan into a single integrated cooling fan assembly. This fan is positioned to simultaneously cool both the engine cylinder head and the power generation section, thereby reducing the total number of cooling fans from two to one, which directly reduces weight and size while maintaining cooling effectiveness for both sections.
Solution Approach 2:
The integrated cooling fan serves multiple functions: it cools the engine cylinder head, cools the power generation section, and can be configured with different diameters (small-diameter and large-diameter fans) to address different cooling requirements of various sections simultaneously, making it a multi-functional cooling solution.
2Temperature
If separate cooling fans are provided for the engine and power generation section, then cooling requirements are met, but device complexity increases
Solution Approach 1:
The patent merges the separate cooling fan assemblies into one integrated cooling fan unit that serves both the engine and power generation section. This reduces the number of discrete cooling components from two independent fan assemblies to one unified assembly, thereby simplifying the overall device structure and reducing component count while still meeting the cooling requirements of both sections.
Solution Approach 2:
The integrated cooling fan is designed to perform multiple cooling functions simultaneously - cooling the engine cylinder head and the power generation section - through a single component assembly, thereby reducing device complexity by eliminating the need for separate dedicated cooling fans for each section.
3Temperature
If separate cooling fans are provided for the engine and power generation section, then cooling performance is maintained, but assembly steps increase
Solution Approach 1:
The patent combines the engine cooling fan and power generation section cooling fan into a single integrated cooling fan assembly that can be installed as one unit. This reduces the number of assembly operations from installing two separate fan assemblies to installing one integrated assembly, thereby reducing assembly steps and improving ease of manufacture while maintaining cooling performance for both sections.
4Temperature
If separate cooling fans are provided for the engine and power generation section, then cooling effectiveness is ensured, but size of the power generator increases
Solution Approach 1:
The patent merges two separate cooling fan assemblies into one integrated cooling fan unit, which reduces the spatial footprint required for cooling components. By positioning this single fan to serve both the engine and power generation section, the overall size of the power generator is reduced compared to having two separate fan assemblies occupying separate spaces.
Solution Approach 2:
The integrated cooling fan is designed to cool multiple sections (engine and power generation section) simultaneously, thereby reducing the total size required for cooling infrastructure compared to having separate dedicated fans for each section.
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
This configuration significantly reduces the weight and size of the power generator while minimizing assembly steps, enhancing productivity by using a compact flywheel/cooling fan unit that efficiently cools both the engine and power generation section.
Implementation Method 1
external air can be directed, by rotation of the engine cooling fan, to a cylinder block etc. to cool the cylinder block etc. Further, external air can be directed, by rotation of the power-generation-section cooling fan, to the interior of the power generation section to cool the power generation section
Data Source
AI summary
In an engine-driven power generator, a fan-equipped flywheel and a drive shaft of a power generation section are connected to a crankshaft of an engine, and the power generation section is driven by the drive shaft being driven via the crankshaft. The fan-equipped flywheel is disposed between a crankcase of the engine and the power generation section, and small- and large-diameter cooling fans for cooling the engine and power generation section are provided on the fan-equipped flywheel.