Vented Utility Meter Enclosure with Solar Shield
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Solution Overview
Problem
Electronic devices in harsh environmental locations, such as utility meters, face thermal stress due to high ambient temperatures and limited thermal conductivity of their enclosures, leading to heat-related degradation and increased failure rates.
Innovation Solution
A vented enclosure with strategically placed vents for convection cooling and an external solar shield that creates an air pocket to prevent direct sunlight contact, allowing air to transfer heat away from the device through convection, thereby reducing component temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the enclosure is made of polymeric materials, then the enclosure provides good electrical insulation and corrosion resistance, but the thermal conductivity is limited causing heat accumulation
Solution Approach 1:
The patent introduces a thermally conductive material layer between the polymeric enclosure and the electronic component. This intermediary layer has high thermal conductivity to efficiently conduct heat away from the component while the polymeric enclosure maintains its electrical insulation and corrosion resistance properties.
Solution Approach 2:
The enclosure structure is segmented into multiple functional layers: the polymeric enclosure for protection, the thermally conductive layer for heat dissipation, and the magnetic shielding layer for electromagnetic interference protection. Each layer performs its specific function without compromising the others.
2Temperature
If vents are added to the enclosure for cooling, then heat dissipation improves, but environmental contaminants may enter the enclosure
Solution Approach 1:
The patent employs a permeable or porous filter material for the vent openings. This material allows air to pass through for cooling purposes while blocking environmental contaminants such as dust, insects, and other particles from entering the enclosure and damaging electronic components.
3Temperature
If the enclosure space is increased to accommodate cooling features, then heat dissipation improves, but the restricted space in metering devices prevents design flexibility
Solution Approach 1:
The patent combines multiple protective and cooling functions into a single integrated enclosure structure. The thermally conductive layer, magnetic shielding layer, and vent filters are integrated into the enclosure design rather than adding separate external components, thus improving heat dissipation without significantly increasing overall device size or complexity.
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
The combination of a vented enclosure and solar shield effectively cools electronic components within utility meters by facilitating air movement and heat dissipation, reducing operating temperatures and minimizing the risk of heat-related failures.
Implementation Method 1
The air movement through the enclosure cools components operating within the enclosure by convection
Implementation Method 2
an external solar shield prevents sunlight from directly contacting an enclosure of a device
Implementation Method 3
The air transfer removes heat from the utility meter by convection
Data Source
AI summary
An enclosure for a utility metering device is configured to reduce internal air temperatures. In an example, the utility metering device has a solar shield and/or filtered ventilation air passage(s). In the example, an enclosure is attached to a base. Opening(s) may be defined in the enclosure, to allow air to remove heat from the metering device by convection. The openings may be covered with filters, to prevent the entry of water, dust, insects, etc. A solar shield may cover at least an upper surface of the enclosure. An air pocket may be defined between the solar shield and at least the upper surface of the enclosure. Air from within the enclosure may be ventilated into the air pocket, and air from within the air pocket may be ventilated into the atmosphere. The ventilation removes heat from within the enclosure, while the solar shield rejects addition of heat energy.