Cooling Fan Ring Geometry for High Airflow and Low Noise
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Solution Overview
Problem
Conventional cooling systems in vehicles face challenges in achieving high cooling rates without increasing size or dimension due to space constraints from side panels and aesthetic parts, leading to reduced efficiency and durability, and increased noise.
Innovation Solution
A cooling system design with a cooling fan having blades where the ring height is maintained smaller than the blade height, along with reduced ribs, to enhance air flow and structural strength, minimizing noise and maintaining efficiency without size changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cooling system size is increased to achieve higher cooling rates, then cooling efficiency is improved, but the vehicle's aesthetic appearance and space utilization deteriorate due to side panel constraints
Solution Approach 1:
The patent changes the geometric parameters of the cooling fan blades, specifically optimizing the blade angle, curvature, and distribution pattern. These parameter modifications enable the existing cooling system dimension to achieve higher cooling rates without increasing size, resolving the contradiction between cooling efficiency and compact dimensions
2Productivity
If conventional cooling system components are added to improve cooling, then cooling performance is enhanced, but noise generation increases due to turbulent air flow
Solution Approach 1:
The patent applies curved blade design with optimized spherical/elliptical cross-sections to the cooling fan blades. This curvature design smooths air flow transitions, reduces turbulence, and thereby decreases noise generation while maintaining effective cooling performance
3Strength
If the ring height is increased to support larger blades, then structural strength is improved, but air flow obstruction increases and cooling efficiency decreases
Solution Approach 1:
The patent transitions from increasing ring height (vertical dimension) to optimizing blade curvature and angular distribution (horizontal/directional dimensions). This dimensional shift allows the blades to achieve necessary structural strength through optimized geometry in the horizontal plane, preventing air flow obstruction while maintaining strength
4Stability of the object's composition
If multiple ribs are added to join shroud and motor box, then structural stability is improved, but air flow obstruction increases and cooling efficiency decreases
Solution Approach 1:
The patent extracts or removes the ribs that join the shroud and motor box from the air flow path. This elimination of obstructive structural elements allows unrestricted air flow through the cooling system, maintaining structural stability through alternative design while maximizing cooling 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 design significantly increases air flow and cooling efficiency, enhances durability, and reduces noise, ensuring effective cooling without altering the system's dimensions or causing inconvenience to the rider.
Implementation Method 1
a cooling system disposed towards the rear of the heat exchanging device, the cooling system being configured to draw air from the atmosphere through the heat exchanging device thereby extracting heat from the coolant
Implementation Method 2
a heat exchanging device disposed in the front portion of the two-wheeled vehicle, the heat exchanging device receiving the coolant from the internal combustion engine
Data Source
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AI summary
The present subject matter discloses a cooling system (300) for a heat exchanging device (302). The cooling system (300) comprises a shroud (320), a motor (303) and a cooling fan (304). The present invention discloses the cooling system (300) with a ring (305) in accordance with a predetermined ratio (b/a) between a ring height (b) and a blade height (a) for providing higher cooling rate, high durability, minimal noise and substantially optimum structural strength to the plurality of blades (304). Under the predetermined ratio (b/a) the ring height (b) is maintained smaller than the blade height (a) to minimize the obstruction coming in the out flow of the air while leaving the cooling fan (301). The proposed subject matter is simple in construction and easy to remove and mount giving rise to improved serviceability.