Fuel-Water Filter Element with Isolated Gas Venting
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Solution Overview
Problem
Existing fuel filters fail to effectively exhaust gases produced during operation, leading to unstable fuel supply, nozzle blockage, and potential safety hazards due to unfiltered fuel entering the nozzle and gases being exhausted against the fuel flow direction.
Innovation Solution
A fuel-water separation filter element with an air collection cavity and vent pin to exhaust gases to the outside, separated from the fuel outlet, and a water blocking tube to sediment water, enhancing filtration efficiency and preventing nozzle damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If an exhaust channel is arranged in the annular gasket connecting fuel inlet and fuel outlet, then gas can be exhausted from the filter, but unfiltered fuel enters the fuel outlet through the exhaust channel reducing filtration efficiency and causing nozzle blockage
Solution Approach 1:
The exhaust channel is separated from the fuel outlet by introducing a partition wall, dividing the exhaust path and fuel outlet into independent channels. This segmentation prevents unfiltered fuel from entering the exhaust outlet while maintaining gas exhaustion functionality.
Solution Approach 2:
The exhaust channel is extracted from the fuel outlet connection and redirected to exhaust to the outside environment through a separate path. This extraction eliminates the harmful effect of unfiltered fuel entering the exhaust outlet while preserving the gas exhaustion function.
2Object-generated harmful factors
If the exhaust channel connects fuel inlet and fuel outlet, then gas can be exhausted, but the flow direction of exhausted gas is opposite to fuel flow direction causing pressure issues that prevent effective gas exhaustion
Solution Approach 1:
The exhaust channel direction is inverted to exhaust gas to the outside environment rather than returning it to the fuel inlet. This inversion eliminates the pressure conflict between fuel flow and gas exhaustion, allowing both functions to operate effectively simultaneously.
3Reliability
If a water blocking portion is added to separate water from fuel, then water can be blocked and sedimentation can occur, but the structure becomes more complex
Solution Approach 1:
The water blocking portion is integrated into the existing filter cartridge structure, combining water blocking, sedimentation, and filtration functions into a single multi-functional component. This reduces overall structural complexity while maintaining water blocking capability.
Solution Approach 2:
The water blocking portion merges the water blocking function with the existing filter cartridge structure, combining multiple functions (water blocking, sedimentation, filtration) into a unified component rather than adding separate independent systems.
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 solution effectively exhausts gases from the filter assembly, improves filtration efficiency, and protects the nozzle by preventing unfiltered fuel from entering the nozzle, ensuring stable fuel supply and safety.
Implementation Method 1
a vent pin axially extending from an end surface of one end of the water blocking portion, the vent pin respectively communicating with the air collection cavity and the outside
Implementation Method 2
the water blocking portion and an inner wall of the fuel duct being formed with a water sedimentation channel
Implementation Method 3
a filter medium arranged on the periphery of the fuel duct and the periphery of the water blocking tube
Data Source
AI summary
The present application provides a fuel-water separation filter element and a fuel filter. The filter element includes a fuel duct, a water blocking tube, and a filter medium. An upper cover plate is connected to one end of the fuel duct. The upper cover plate is formed with an air collection cavity in the fuel duct. The water blocking tube is provided with a water blocking portion positioned in the fuel duct, and a vent pin axially extends from an end surface of one end of the water blocking portion. The vent pin respectively communicates with the air collection cavity and the outside. During operation of the filter element in the present application, gas mixed into a fuel supply system may be effectively exhausted.