Air-cooling device
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Solution Overview
Problem
Air-cooling devices for vehicles experience reduced cooling efficiency when the vehicle stops or travels at low speeds due to backflow of air through the clearance between the radiator and duct, leading to increased air temperature and inefficient cooling.
Innovation Solution
The air-cooling device incorporates a frame that extends from one side of a straight line to the opposite side, with a connecting portion positioned at a distance from the line, and optionally includes ribs on the frame or duct surfaces to guide air in a spiral manner, increasing fluid resistance and preventing backflow into the duct.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a duct is provided to efficiently introduce air to the radiator core, then air cooling efficiency is improved, but air backflow occurs through the clearance between the radiator and duct at low speeds, reducing cooling efficiency
Solution Approach 1:
The frame acts as an intermediary structure between the radiator and duct. By positioning the frame's connecting portion at a distance from the straight line extending rearward from the duct opening end, it serves as a mediator that blocks the backflow path of hot air while maintaining the forward airflow path for cooling efficiency
Solution Approach 2:
The frame is preliminarily positioned to prevent backflow before it occurs. The connecting portion is strategically located at a distance from the straight line to create a barrier that stops hot air from flowing back into the duct clearance, thereby preventing the harmful backflow effect in advance
2Reliability
If the fan operates at low vehicle speeds to maintain cooling, then cooling function is maintained, but air flow rate is low causing high temperature air to pass through clearances and flow back into the duct
Solution Approach 1:
The frame serves as a mediator structure that separates the forward airflow path from the potential backflow path. The connecting portion positioned at a distance from the straight line creates a physical barrier that prevents hot air from the radiator core from flowing back into the duct, even when fan-induced airflow rates are low
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 effectively restrains backflow, maintaining efficient cooling of the radiator core by preventing high-temperature air from returning to the duct, thus ensuring effective heat exchange even at low vehicle speeds.
Implementation Method 1
The fan causes air to flow from the opening to the radiator core
Implementation Method 2
Air flows into a radiator core from an opening of the duct while a vehicle is traveling, so that the radiator core is cooled
Data Source
AI summary
An air-cooling device includes a radiator, a duct, and a fan. The radiator includes a radiator core and a frame connected to an outer peripheral portion of the radiator core. The duct is disposed forward of the radiator. The duct includes an opening disposed forward of the radiator core and an air guide that extends from the frame to an end of the opening. The fan causes air to flow from the opening to the radiator core. The frame is disposed to extend from a position on one side of a straight line to a position on an opposite side of the straight line, the straight line extending rearward from the end of the opening. A connecting portion between the frame and the air guide is located at a distance from the straight line.