EV Charging Display Assembly Cooling With Centrifugal Airflow
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Solution Overview
Problem
Existing electronic display assemblies for outdoor use face challenges in thermal management due to harsh conditions, and traditional tube axial fans are inefficient in providing effective cooling, especially around corners and in distributing air evenly.
Innovation Solution
The use of centrifugal fans in open and closed loop airflow pathways within the display assemblies to improve airflow efficiency, reduce noise, and lower power consumption, while providing even cooling and temperature control by orienting air flow 90 degrees to complete loops and distributing air without shrouding components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tube axial fans are used for cooling, then cooling function is provided, but airflow efficiency is poor especially around corners and air distribution is uneven
Solution Approach 1:
The patent changes the fundamental operating parameters of the fan by switching from axial to centrifugal fan design. Centrifugal fans generate radial airflow that naturally turns 90 degrees, improving corner airflow efficiency and distribution uniformity while maintaining cooling effectiveness.
2Productivity
If tube axial fans are used, then cooling is provided, but noise emission is high and power consumption is high
Solution Approach 1:
The patent changes the fan type parameter from axial to centrifugal, which fundamentally alters the energy conversion efficiency. Centrifugal fans achieve better mass airflow rates with lower power consumption and reduced noise emission due to their radial impeller design that efficiently transfers energy to the air.
3Productivity
If centrifugal fans are used, then airflow efficiency is improved and power consumption is reduced, but device complexity increases due to engineered placement requirements
Solution Approach 1:
The patent makes the centrifugal fan system universally applicable by designing it to handle multiple functions: primary cooling, corner airflow management, and even air distribution throughout the housing. The engineered placement of centrifugal fans allows a single fan type to accomplish what previously required multiple different fan configurations.
4Use of energy by moving object
If centrifugal fans operate at lower speeds, then noise is reduced and power consumption is lowered, but cooling effectiveness must be maintained
Solution Approach 1:
The patent changes the fan performance parameters by utilizing centrifugal fans' inherent ability to generate higher static pressure and more efficient airflow at lower rotational speeds. This allows maintaining effective cooling while operating at lower RPM, reducing noise and power consumption simultaneously.
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
Centrifugal fans enhance airflow efficiency, reduce noise, and lower power usage, achieving better mass airflow rates and homogenization of air, leading to improved cooling and temperature control, potentially reducing the number of fans and their operating speed.
Implementation Method 1
Electronic display assemblies which utilize centrifugal fans to provide forced air cooling are provided
Implementation Method 2
centrifugal fans to provide forced air cooling
Implementation Method 3
The use of such centrifugal fans may, for example, without limitation, result in increased homogenization of air
Implementation Method 4
to thermally manage the electronic displays. It is known to provide open and/or closed loop airflow pathways through such housings to control temperatures
Data Source
AI summary
Display assemblies providing electric vehicle charging are disclosed which include side assemblies connected to a frame having an electronic display and power supplies and electric vehicle charging equipment, including internal and external components. The electric vehicle charging equipment and the one or more side assemblies are each connectable to an external power supply in a manner which electrically separates power supplied to at least a bulk energy storage device of the electric vehicle charging equipment from power supplied to at least an electronic display subassembly power supply of the one or more side assemblies.