Fuel Filter Grounding via Heater Electrode
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Fuel filters with metal housings face safety risks due to static buildup, which conventional grounding solutions attempt to address but often result in a less compact structure and potential welding errors.
Innovation Solution
A fuel filter design that incorporates a cup-shaped conductive housing with a built-in heater featuring a grounding electrode, eliminating the need for a separate grounding lead by connecting the housing directly to the heater's electrode, thereby preventing static buildup without compromising structural compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate grounding lead is added to the metal housing, then static discharge safety is improved, but the structure becomes less compact and more complex
Solution Approach 1:
The grounding function is merged with the existing heater component by integrating a grounding electrode into the heater assembly. The heater's electrode, which is already electrically connected to the power supply, is configured to also serve as the grounding connection point for the metal housing, eliminating the need for a separate grounding lead and maintaining structural compactness.
Solution Approach 2:
The heater electrode is designed to perform multiple functions: its primary function of heating fuel is combined with a secondary function of providing electrical grounding for the metal housing. This multi-functionality approach allows the same component to address both heating requirements and static discharge safety without adding extra parts.
2Reliability
If a separate grounding lead is added to the metal housing, then static discharge safety is improved, but welding errors and breaks may occur
Solution Approach 1:
By combining the grounding function with the heater electrode, the number of welding joints is reduced. The grounding connection is established through the existing electrical connections of the heater assembly rather than requiring additional welding of a separate grounding lead, thereby reducing manufacturing errors and potential failure points.
Solution Approach 2:
The grounding function is extracted from the housing structure and integrated into the heater component. This separation allows the grounding path to be established through the heater's electrical connections rather than requiring direct welding to the housing, reducing manufacturing complexity and improving reliability.
3Stress or pressure
If a metal housing is used for high working pressure, then pressure containment is improved, but static buildup occurs causing safety risks
Solution Approach 1:
The heater electrode acts as an intermediary element that provides a controlled electrical path from the metal housing to ground. By using the electrode as a mediator, static charges are safely discharged through a designated pathway rather than accumulating on the housing surface, eliminating sparks while maintaining the metal housing's pressure containment capabilities.
Solution Approach 2:
The heater component, which is already present in the fuel filter for its heating function, is utilized to also provide the grounding function. The heater's electrical connection to the power supply naturally provides a path to ground, allowing the existing component to serve dual purposes without requiring additional dedicated grounding infrastructure.
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 solution effectively grounds the conductive housing, preventing static sparks and explosions while maintaining a compact structure and reducing costs by eliminating the need for additional grounding components.
Implementation Method 1
a heater, provided inside the fuel filter cavity, configured to heat fuel inside the fuel filter cavity; wherein, the heater comprises a grounding electrode that is electrically connected to the cup-shaped conductive housing
Implementation Method 2
the heater comprises a grounding electrode that is electrically connected to the cup-shaped conductive housing
Implementation Method 3
To eliminate the static on the metal housing, a conventional approach is to ground the metal housing with a grounding lead, in order to release the accumulated electric charges on the housing in a timely manner to prevent sparking and explosion
Data Source
AI summary
A fuel filter is disclosed herein, comprising: a cup-shaped conductive housing with an opening on one end; a lid, provided at the opening end of the cup-shaped conductive housing to cover the opening, the cup-shaped conductive housing and the lid together defining a fuel filter cavity; and a heater, provided inside the fuel filter cavity, configured to heat fuel inside the fuel filter cavity; wherein the heater includes a grounding electrode that is electrically connected to the cup-shaped conductive housing. The fuel filter as described above electrically connects the conductive housing and the grounding electrode of the heater, creating a connecting path that grounds the conductive housing without need of a separate grounding lead. Therefore, a more compact structure and lower costs are made possible.