Inter-Car Air-Guiding Structure for Rail Dust Deflection
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Solution Overview
Problem
Vertical airflows between coupled cars in rail vehicles cause dust and sand to be sucked up from the track bed, contaminating air conditioning units and causing abrasion in the upper side and window areas, particularly in desert regions.
Innovation Solution
Incorporating air-guiding elements that deflect airflow obliquely downward and air-supply elements to guide airflow horizontally into cross-sectionally reduced portions, segmenting the airflow to prevent vertical passage and direct contaminants downward.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If coupled cars are connected to form multi-unit rail vehicles, then transportation capacity is improved, but vertical airflows between cars cause dust and sand to be sucked up from the track bed, contaminating air conditioning units and causing abrasion
Solution Approach 1:
The inter-car area is segmented into an upper region and a lower region by the air-guiding element. This segmentation prevents the vertical airflow that carries dust and sand from reaching the upper region where air conditioning units are located, while allowing the lower region to discharge contaminated air downward away from sensitive components.
Solution Approach 2:
The air-guiding element acts as an intermediary structure between the incoming vertical airflow and the air conditioning units. It redirects the airflow path, causing air to move horizontally along the side wall and then downward, preventing direct vertical passage of contaminated air to the upper region.
2Object-affected harmful factors
If air-guiding elements are added to redirect airflow, then contamination and abrasion are reduced, but device complexity increases
Solution Approach 1:
The air-guiding element is formed as a thin-walled, hollow structural component that integrates with the existing vehicle body framework. This thin-film approach provides the necessary airflow guidance function without adding significant structural complexity or weight, as the element utilizes the existing structural members of the vehicle.
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
Prevents contamination of roof areas and adjacent side walls by guiding dirty air away, reducing abrasion and maintaining cleanliness within the vehicle.
Implementation Method 1
at least one air-guiding element is arranged in the cross-sectionally reduced portion and extends outward in the transverse direction of the vehicle and causes an airflow guidance of an airflow which enters the cross-sectionally reduced portion during travel, such that a part of the airflow is guided from the inside back to the outside and at the same time is deflected obliquely downward
Implementation Method 2
an air-supply element whose longitudinal direction extends vertically or at least predominantly vertically and whose outer contour brings about a horizontal airflow supply into the cross-sectionally reduced portion during travel
Data Source
AI summary
A vehicle has at least one cross-sectionally reduced portion. At least one air-guiding element is arranged in the cross-sectionally reduced portion and extends outwards in the vehicle transverse direction and causes an airflow guidance of an airflow that enters the cross-sectionally reduced portion during travel, and does so in such a way that a part of the airflow is guided from the inside back to the outside and at the same time is deflected obliquely downwards.