Rotating Hydrogen Filling Nozzle for Ice-Free Release
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Solution Overview
Problem
Hydrogen fuel cell electric vehicle nozzles often become stuck due to ice formation between the nozzle and receptacle during hydrogen filling, causing operational inefficiencies and delays as the ice prevents the nozzle from releasing even after filling is complete.
Innovation Solution
A fluid filling nozzle design featuring a rotation part coupled to the nozzle, which is guided by a surrounding part to move parallel or antiparallel to the injection direction, allowing the nozzle to rotate and disrupt ice formation by moving the guide part forwards or rearwards, facilitating easy separation from the receptacle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a high-pressure gas nozzle is used to supply hydrogen gas to a vehicle, then filling efficiency is improved, but ice formation between the nozzle and receptacle causes the nozzle to stick and fail to release
Solution Approach 1:
The nozzle assembly incorporates a rotation part that enables dynamic movement between a filling position and a release position. The guide structure allows the nozzle to rotate and move along a predetermined path, transforming the static nozzle into a dynamically adjustable component that can automatically separate from the receptacle after filling, resolving the sticking issue while maintaining high-pressure filling efficiency
2Device complexity
If the nozzle remains stationary during filling, then structural simplicity is maintained, but ice formation prevents release even after filling completion
Solution Approach 1:
The nozzle structure incorporates a rotation part with guide structures that enable controlled movement. The guide includes a guide hole and guide surface that work together to constrain the rotation part's movement along a predetermined path, ensuring reliable separation from the receptacle while maintaining relatively simple structural design
Solution Approach 2:
The rotation part is designed to automatically rotate and move the nozzle assembly from the filling position to the release position based on the guide structure's geometry. This self-service mechanism eliminates the need for additional actuators or complex control systems, achieving reliable release while keeping the overall device complexity low
Data Source
AI summary
A fluid filling nozzle may include a nozzle part configured to guide a fluid from an interior thereof along a reference direction, a rotation part coupled to a side of the nozzle part in the reference direction such that an end thereof in an opposite direction to the reference direction is rotatable, and a guide part, in which the nozzle part is disposed in an interior thereof, and that is configure to guide the nozzle part to move parallel or antiparallel to the reference direction. The guide part May be configured to engage a portion of the rotation part such that the rotation part is rotated if the guide part is moved parallel or antiparallel to the reference direction.