Vehicle Control Device Suction Port Blocking Member
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Solution Overview
Problem
The filter at the suction port of a railroad vehicle control device clogs over time due to pollen and dust accumulation, reducing air intake and cooling efficiency, necessitating frequent maintenance.
Innovation Solution
A vehicle control device with a housing, filter, flow passage, blower, blocking member, and radiator, where the blocking member is positioned to direct air flow along its surface, reducing airflow velocity and extending filter maintenance cycles by allowing air to pass through the radiator and blower before discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is provided at the suction port to prevent foreign substances from entering the housing, then the reliability of the control device is improved, but the filter clogs over time requiring frequent maintenance
Solution Approach 1:
The suction port is divided into two separate ports: a first suction port for cooling air that does not require a filter, and a second suction port for clean air that includes a filter. This segmentation allows the system to maintain reliability through filtering where needed while eliminating maintenance requirements for the high-volume cooling air intake.
Solution Approach 2:
The filter is extracted from the main cooling air intake path and placed only in the second suction port. This removes the filter from the high-volume airflow path where it would quickly clog, while still providing filtered air for the electronic component cooling through the radiator.
2Reliability
If a filter is installed at the suction port, then foreign substances are prevented from entering, but the filter clogging causes a decrease in air intake amount and cooling efficiency
Solution Approach 1:
The suction port is divided into two separate ports: a first suction port for cooling air that does not require a filter, and a second suction port for clean air that includes a filter. This segmentation allows the system to maintain reliability through filtering where needed while eliminating maintenance requirements for the high-volume cooling air intake.
Solution Approach 2:
Filtering is applied locally only where needed (at the second suction port for clean air intake) rather than at the main cooling air intake. This local quality approach ensures that cooling efficiency is maintained by allowing unfiltered but sufficient cooling air through the first suction port, while still providing protected clean air through the filtered second suction port.
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 configuration reduces foreign substance attachment to the filter, extending maintenance cycles and maintaining cooling efficiency by optimizing air flow and heat dissipation.
Implementation Method 1
The radiator is connected to the electronic component and emits, from a portion of the radiator exposed to the flow passage, heat generated by the electronic component
Implementation Method 2
A control device mounted on a railroad vehicle is provided with a blower, and air outside a housing is drawn via a suction port into the housing by the blower
Data Source
AI summary
In a housing of a vehicle control device are formed a suction port for taking outdoor air and a discharge port for discharging air taken in through the suction port. A flow passage that connects the suction port and the discharge port is formed inside the housing. A blocking member, a radiator, and a blower are provided in the flow passage. The blocking member is provided at a position where the blocking member faces at least a portion of an opening face of the suction port in the flow passage and a distance between the blocking member and the suction port is in a predetermined range.