Fuel Filter Auto-Drain Layout for Spill-Free Element Replacement
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Solution Overview
Problem
Traditional fuel filters in liquid-fueled generators face challenges in managing spillage during replacement, as they trap fluid within the filter element housing, requiring careful handling and separate disposal of contaminants.
Innovation Solution
A fluid filter system with auto-drain capabilities, featuring a vent check valve, filter outlet check valve, openable valve, drain pump, and drain pump check valve, which allows for automated drainage of the filter element before replacement, minimizing spillage and simplifying the disposal process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional spin-on filters are installed with filter head above filter element, then filter replacement is simple, but fluid spills during replacement and requires careful handling
Solution Approach 1:
The system performs preliminary draining of the filter element housing through the drain port and drain line before filter replacement. The drain pump removes accumulated fluid and contaminants from the filter element housing, and the vent check valve allows air ingress to facilitate complete draining, preventing spillage during replacement
Solution Approach 2:
A drain pump is introduced as an intermediary device between the filter element housing and the fuel tank. This mediator automatically transfers fluid from the filter housing back to the fuel tank through controlled pumping action, eliminating the need for manual draining and preventing spillage
2Object-affected harmful factors
If filter elements are removed without spilling fuel, then contamination is avoided, but separate disposal of trapped fuel and contaminants is required
Solution Approach 1:
The drain pump extracts fluid and contaminants from the filter element housing through the drain port before filter removal. By actively removing the trapped fluid and contaminants through the drain line back to the fuel tank, the system eliminates the need for separate disposal procedures while maintaining contamination avoidance
3Object-affected harmful factors
If automated drainage system is added, then spillage is minimized, but system complexity increases
Solution Approach 1:
The system uses the existing fuel polisher pump to provide automated drainage functionality. The pump, already present in the system for fuel circulation, is utilized to drain the filter element housing back to the fuel tank, eliminating the need for a separate drain pump and reducing overall system complexity
Solution Approach 2:
The fuel polisher pump is designed to serve multiple functions: fuel circulation during normal operation and automated drainage during filter replacement. This multi-functionality reduces the need for additional components while achieving spillage minimization
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
Enables efficient and spill-free filter element replacement by automatically draining the remaining fluid back into the fuel tank, reducing the risk of contamination and simplifying maintenance procedures.
Implementation Method 1
A vent check valve allows air ingress into the filter to facilitate evacuation of fluid from the filter element
Implementation Method 2
A suction tube in fluid communication with the drain outlet and extending into the removable filter element
Implementation Method 3
The filter outlet check valve has an inlet in fluid communication with the outlet of at least one filter head and a check valve outlet
Data Source
AI summary
A fluid filter system with auto-drain capabilities. The fluid filter system includes at least one filter, a vent check valve, a filter outlet check valve, an openable valve, a drain pump and a drain pump check valve. The filter includes a filter head having an inlet, an outlet and a drain outlet, a removable filter element, and a suction tube in fluid communication with the drain outlet and extending into the removable filter element. The vent check valve has an inlet exposed to atmosphere and an outlet in fluid communication with an interior volume of the filter. The filter outlet check valve has an outlet and an inlet in fluid communication with the outlet of at least one filter head.