Photovoltaic Inverter Cooling Assembly With Segmented Airflow Paths
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Solution Overview
Problem
Conventional photovoltaic-inverter heat-dissipation assemblies suffer from deteriorated heat-dissipation performance due to airflow heating up as it flows through multiple heat sources sequentially, leading to hot air backflow that affects overall efficiency.
Innovation Solution
The internal space of the photovoltaic-inverter assembly is divided into at least two isolated heat-dissipation spaces with independent airflows, each with its own fan and air-inlet, ensuring airflow stability and directionality to prevent interference and backflow, and utilizing a retaining wall to maintain airflow separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single fan is used to dissipate heat from multiple components in the rear chamber, then the device complexity is reduced, but the heat-dissipation performance deteriorates due to hot air backflow and temperature accumulation
Solution Approach 1:
The rear chamber is divided into multiple independent heat-dissipation spaces (first heat-dissipation space, second heat-dissipation space, etc.), each with its own fan and airflow path. This segmentation prevents hot air backflow between different heat-generating components, allowing each space to maintain independent temperature control and improve overall heat-dissipation performance despite increased structural complexity
2Ease of manufacture
If fans are disposed on the bottom side to simplify airflow path, then the ease of manufacture is improved, but the heat-dissipation performance worsens due to sequential heat transfer from bottom to top
Solution Approach 1:
Instead of using a single bottom-mounted fan creating sequential airflow through multiple heat sources, the invention segments the airflow paths by providing separate fans for different heat-dissipation spaces. This allows parallel or independent airflow patterns where hot air from one space does not flow into another space, preventing temperature accumulation even though manufacturing becomes slightly more complex
Solution Approach 2:
The invention changes the airflow direction from vertical (bottom to top) to horizontal or multi-directional patterns by positioning fans at different locations (bottom, side, or top) for different heat-dissipation spaces. This dimensional change in airflow paths prevents hot air from rising and entering other heat-generating areas, improving heat-dissipation effectiveness
3Volume of stationary object
If heat-dissipation spaces are integrated into a single chamber, then the volume of the housing is reduced, but the heat-dissipation efficiency decreases due to hot air backflow affecting overall performance
Solution Approach 1:
The rear chamber is segmented into multiple heat-dissipation spaces that are spatially separated but contained within the same housing volume. Each space has independent airflow control, preventing hot air backflow while maintaining compact overall dimensions. The partition walls between spaces are minimal, allowing efficient use of housing volume while ensuring thermal independence of each heat-dissipation zone
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 design enhances heat-dissipation efficiency by preventing airflow interference and backflow, allowing for optimal heat dissipation of multiple heat-generating components, thereby improving overall performance.
Implementation Method 1
a first fan, disposed between the first air-inlet and the first heat-generating device, and configured to generate a first airflow, which enters through the first air-inlet, flows through the first heat-generating device
Data Source
AI summary
A photovoltaic-inverter heat-dissipation assembly is disclosure and includes a front housing-base, a rear cover, a first heat-generating device, a first fan, a second heat-generating device and a second fan. The rear cover and the front housing-base are combined to separately form a first heat-dissipation space and a second heat-dissipation space. The rear cover includes a first air-inlet, a second air-inlet and an air-outlet. The first air-inlet and the second air-inlet are in communication with the air-outlet through the first heat-dissipation space and the second heat-dissipation space, respectively. The first fan generates a first airflow, which enters through the first air-inlet, flows through the first heating-generating device accommodated in the first heat-dissipation space, and flows out through the air-outlet. The second fan generates a second airflow, which enters through the second air-inlet, flows through the second heat-generating device accommodated in the second heat-dissipation space, and flows out through the air-outlet.