Rail Vehicle Cooler Separator with Bypass Suction
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Solution Overview
Problem
High-speed rail vehicles face challenges with cooler arrangements due to excessive contamination and pressure issues that prevent effective removal of impurities from the cooling air flow, leading to accelerated corrosion and impaired function.
Innovation Solution
A closed collection box is designed to manage high-pressure areas, fluidly connected to a low-pressure area, with a bypass suction system using a fan to actively remove contaminants, and additional features like an antechamber with a fine grille and offset air inlets to enhance pre-separation and airflow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an open collection box is used to discharge contaminants downwards, then the structure is simple and easy to manufacture, but high-pressure areas prevent contaminants from escaping and removal reliability is poor
Solution Approach 1:
The patent applies pneumatic principles by utilizing pressure differential between high-pressure area (under vehicle floor) and low-pressure area (suction side of fan) to drive contaminant removal. The collection box is designed with a closed structure that includes a discharge opening communicating with the low-pressure area, allowing contaminants to be actively suctioned out rather than relying on passive gravity-based discharge through an open bottom structure.
2Reliability
If a closed collection box is used to prevent back pressure, then contaminant removal reliability improves, but the structure becomes more complex
Solution Approach 1:
The patent introduces a bypass suction line as an intermediary component that connects the collection box to the low-pressure area. This bypass line serves as a dedicated pathway for contaminant discharge, mediating between the closed collection box structure and the suction fan. The bypass suction line includes a discharge opening that communicates with the low-pressure area, enabling effective contaminant removal without requiring the collection box itself to have complex active discharge mechanisms.
3Reliability
If contaminants are not effectively removed, then the collection box structure remains simple, but cooler corrosion accelerates and function is impaired
Solution Approach 1:
The patent extracts the contaminant discharge function from the main cooling air path by creating a separate bypass suction system. The bypass suction line branches off from the cooling air path and provides a dedicated route for removing contaminants from the collection box. This extraction approach ensures that contaminant removal does not interfere with the primary cooling function while maintaining system reliability.
Solution Approach 2:
The patent segments the cooling system into distinct functional zones: the main cooling air path through the cooler, the separator for contaminant collection, and the bypass suction system for active contaminant removal. The collection box is segmented with separate openings: one for receiving contaminants from the separator and another (discharge opening) for communicating with the low-pressure area. This segmentation allows each component to perform its specific function efficiently.
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 ensures reliable removal of impurities, reduces back pressure, and prevents contamination buildup, maintaining the efficiency and longevity of the cooler system in high-speed rail vehicles.
Implementation Method 1
a low-pressure area, in which, when the rail vehicle is moving, a pressure prevails that is lower than in the high-pressure area
Implementation Method 2
a separator structure through which the flow of cooling air can flow and which feeds the separated impurities
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a rail vehicle cooling system (2) of a rail vehicle (1). The cooling system comprises a cooler (3). The cooler (3) is disposed in a cooling circuit (4) for guiding a liquid refrigerant and a cooling air path (5) for guiding a cooling air flow (6) goes through the cooler. A separator (7) is arranged at the upstream of the cooler (3) in the cooling air path (5) and is used for separating liquid and / or solid impurities in the cooling air flow (6), wherein the separator (7) has a separator structure (8), the cooling air flow (6) can go through the separator and the impurities after separation are transported to a collection box (10). An Improved dependability is obtained at high vehicle speeds. The invention also relates to a rail vehicle.