Drop Separator With Partitioned Gas Paths
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Solution Overview
Problem
Existing drop separators in fuel containers lead to increased condensate formation and unintentional nozzle shut-offs due to direct contact between hot bleeding gases and cold fuel jets during refueling, causing turbulence and gas expansion.
Innovation Solution
A drop separator with a housing attached to the refueling duct of the filler tube, featuring two separate gas paths and a cover that deflects the bleeding gas flow, preventing direct contact with the fuel jet and using a partition wall with a hinged cover for easy assembly and production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drop separator is attached to the filler tube in the region of the filler head, then the liquid carry-over can be fed back into the fuel container, but the hot bleeding gases directly contact the cold fuel jet during refueling, causing intense turbulence and high condensate production
Solution Approach 1:
The drop separator housing is divided into at least two separate gas paths by means of at least one partition wall. The first gas path serves as a gas entry duct and the second gas path serves as a gas discharge duct. This segmentation prevents direct contact between hot bleeding gases and the cold fuel jet, thereby reducing condensate formation while maintaining the function of feeding liquid carry-over back into the fuel container.
Solution Approach 2:
The partition wall acts as an intermediary structure that separates the hot bleeding gases in the first gas path from the cold fuel jet environment in the second gas path. This intermediary barrier prevents direct thermal interaction and turbulence between the hot and cold flows, reducing condensate production while allowing the drop separator to remain attached to the filler tube in the filler head region.
2Productivity
If the gas entry duct is open at the end to allow bleeding gas flow into the filler tube, then the bleeding function is maintained, but direct contact between hot gases and cold fuel causes turbulence and nozzle shut-off
Solution Approach 1:
The gas entry duct is closed at the end by means of a cover or the like, and communicates with the filler tube via an aperture in an enclosing wall of the drop separator housing. This segmentation allows the bleeding gas to be directed through a controlled path into the filler tube without directly contacting the cold fuel jet, maintaining the bleeding function while ensuring stable nozzle operation.
Solution Approach 2:
The enclosing wall with its aperture serves as an intermediary structure that controls the discharge of bleeding gases into the filler tube. This intermediary arrangement allows the gas to enter the filler tube system while preventing direct contact with the cold fuel jet, thereby maintaining productivity without compromising reliability.
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 design effectively reduces condensate formation and prevents nozzle shut-offs by deflecting the bleeding gas flow, ensuring a stable refueling process.
Implementation Method 1
the housing is divided into at least two separate gas paths by means of at least one partition wall, wherein a first gas path is formed as a gas entry duct and a second gas path is formed as a gas discharge duct
Implementation Method 2
the gas entry duct is closed at the end by means of a cover or the like... this bleeding volume flow is deflected so that a high level of condensate formation in the mouth region of the nozzle is prevented
Implementation Method 3
The housing also comprises a condensation chamber for the condensation of fuel droplets
Data Source
AI summary
A drop separator for the bleeding line of a fuel container, comprising a drop separator housing that is connected to a space surrounded by the filler tube of the fuel container, preferably directly to the refueling channel of the filler tube, and at least two bleeding line connections, wherein the housing is divided by at least one partition into at least two separate gas paths, wherein a first gas path is designed as a gas inlet channel and a second gas path as a gas outlet channel. The gas inlet channel is closed on the end face by a lid and communicates via a passage of a surrounding wall of the drop separator housing with the filler tube.