Diesel Filter Device with Integrated Pump for Air Removal
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Solution Overview
Problem
Current filter devices for diesel fuels require cumbersome and time-consuming maintenance processes for replacing filter elements, as they often necessitate the use of external hand pumps and valve devices to remove air from the system, complicating the filter element change and potentially disrupting the fuel supply.
Innovation Solution
Integration of a fluid pump device with two pump chambers and opposing valves within the filter device, allowing air to be suctioned and fuel to be reintroduced without external equipment, simplifying the maintenance process by enabling air removal and fuel replenishment internally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external hand pumps and valves are used to remove air from the system during filter element replacement, then air can be removed from the filter housing, but the maintenance process becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines the air removal function with the filter element replacement process by integrating a valve into the filter element itself. When the filter element is removed, the valve automatically opens to allow air to escape from the filter housing through the filter element's flow path, eliminating the need for separate air removal operations and reducing maintenance time.
Solution Approach 2:
The system performs self-service air removal during filter element replacement. The integrated valve automatically opens when the filter element is removed, allowing air to escape passively through the filter housing and filter element flow path without requiring external hand pumps or additional manual air removal steps.
2Reliability
If external hand pumps and valves are connected to the filter housing for air removal, then air can be extracted from the system, but the device complexity increases
Solution Approach 1:
The patent merges the air removal function with the existing filter element structure by integrating a valve into the filter element. This eliminates the need for separate external valves and hand pumps, reducing device complexity while maintaining the air removal capability through the filter element's flow path.
Solution Approach 2:
The patent extracts the air removal function from the external system components and integrates it directly into the filter element. The valve is embedded within the filter element structure, allowing air to be removed through the filter element's own flow path rather than requiring separate external air removal equipment.
3Ease of repair
If the filter housing is emptied during filter element replacement, then the filter element can be accessed for replacement, but air is introduced into the system
Solution Approach 1:
The system automatically handles air removal during filter element replacement by using the integrated valve that opens when the filter element is removed. Air introduced during filter element access is passively expelled through the filter housing and filter element flow path without requiring additional air removal operations.
Solution Approach 2:
The integrated valve is positioned to automatically open when the filter element is removed, creating a pre-established air escape path. This preliminary arrangement ensures that air introduced during filter element replacement is immediately directed out of the system through the filter element's flow path.
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 facilitates quick, safe, and cost-effective maintenance by eliminating the need for external devices, ensuring seamless operation of the pre-supply pump and overall fuel supply system after filter element changes.
Implementation Method 1
the pump piston, which preferably is operated by hand and divides the two pump chambers
Implementation Method 2
each pump chamber is assigned a valve which opens or closes in the opposite direction to the other valve when the pump is actuated
Data Source
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AI summary
The invention relates to a filter device, in particular provided for use with diesel fuels, comprising a filter element (19) that can be exchangeably accommodated in a filter housing, which filter device is characterized in that a fluid pump device (46) having two pump chambers (45, 49) is present as part of the filter device, which pump chambers, by means of a pump piston (51) guided in said chambers in a longitudinally movable manner, are separated from each other in a fluid-tight manner at least in one of the two directions of movement of the pump piston, and that each pump chamber (45, 49) is assigned a valve (39, 63), which opens or closes oppositely to the other valve (39, 63) when the pump device (46) is actuated.