Filter Diffuser Reduces Pressure Loss in Fuel Systems
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Solution Overview
Problem
Conventional filter assemblies experience significant pressure loss due to abrupt changes in fluid flow at fittings, which increases costs and reduces efficiency, especially in liquid filtration systems like fuel and lube filtration, as larger fittings are costly and space-constrained, and custom designs are not scalable.
Innovation Solution
Incorporating a diffuser within the filter assembly's port and fitting system, which transitions fluid flow between smaller and larger diameters at a controlled angle, minimizing dynamic pressure loss and allowing for standard fittings while maintaining compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If larger fittings are used to reduce pressure loss, then pressure loss is reduced, but cost and space requirements increase
Solution Approach 1:
A diffuser component is introduced as an intermediary element between the fitting and the port. This diffuser gradually transitions the fluid flow from the smaller fitting diameter to the larger port diameter, reducing abrupt expansion and minimizing pressure loss without requiring larger fittings themselves
Solution Approach 2:
The diffuser changes the geometric parameters of the flow path by providing a gradual diameter transition. The controlled angle of the diffuser (typically 5-15 degrees) optimizes the balance between pressure recovery and space requirements, reducing pressure loss while maintaining compact dimensions
2Loss of energy
If custom-designed fittings with built-in diffuser are used, then pressure loss is reduced, but manufacturing cost increases
Solution Approach 1:
The diffuser function is separated from the fitting itself and implemented as a distinct component. This allows standard fittings to be used while the diffuser is manufactured separately and installed between the fitting and port, enabling mass production of both components independently
Solution Approach 2:
The diffuser serves as a mediator that can be added to existing standard fittings without requiring custom-designed integrated solutions. This modular approach allows manufacturers to continue using off-the-shelf fittings while adding the pressure-reducing diffuser component
3Ease of manufacture
If standard fittings are used, then manufacturing cost is reduced, but pressure loss increases
Solution Approach 1:
The diffuser is positioned as an intermediary component between the standard fitting and the port, allowing the use of inexpensive, readily available standard fittings while the diffuser provides the pressure loss reduction function
Solution Approach 2:
The diffuser is nested within the port structure, fitting inside the available space between the fitting and the port opening. This nested arrangement allows the diffuser to perform its function without requiring additional external space or modifying the standard fitting
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 diffuser reduces pressure loss by 19-20% and improves fuel economy, enabling more efficient and compact filtration systems without the need for larger or custom fittings.
Implementation Method 1
The diffuser is positionable within the channel of the port. The diffuser comprises an inner surface and an outer surface. The inner surface defines an inner conical hollow region extending between an inner conical hollow region first end and an inner conical hollow region second end. The inner surface extends at a nonzero angle relative to the direction of flow between the inner conical hollow region first end and the inner conical hollow region second end such that a first inner diameter of the diffuser at the an inner conical hollow region first end is smaller than a second inner diameter of the diffuser at the an inner conical hollow region second end.
Data Source
AI summary
A filter assembly comprises a filter head, a port, a fitting, and a diffuser. The port extends from a portion of the filter head and defines a channel for fluid to flow into or out of the filter head. The fitting first end is attachable to the port and the fitting second end is attachable to a filtration system component. The diffuser is positionable within the channel of the port and comprises an inner surface and an outer surface. The inner surface defines an inner conical hollow region that extends at a nonzero angle between the inner conical hollow region first end and the inner conical hollow region second end such that a first inner diameter of the diffuser at the inner conical hollow region first end is smaller than a second inner diameter of the diffuser at the inner conical hollow region second end.